阅读说明：本技术 一种为临床医疗器械提供支撑的位姿调整设备 (Pose adjusting equipment for providing support for clinical medical instrument ) 是由 不公告发明人 于 2020-06-10 设计创作，主要内容包括：本发明公开一种为临床医疗器械提供支撑的位姿调整设备,包括升降内臂、升降外臂、第一手轮、第二手轮、横移外臂、横移内臂、摆转架、插接板、第四手轮、第三手轮,升降外臂与升降内臂构成移动副,通过第二手轮实现升降外臂在竖直方向的移动,横移外臂与升降外臂构成转动副,并由第一手轮驱动横移外臂的摆动,横移内臂与横移外臂构成移动副,并通过第二手轮来实现横移内臂在水平方向的移动,摆转架与横移内臂构成转动副,并由第三手轮驱动摆转架绕竖直轴的转动,插接板与摆转架构成转动副,并由第四手轮驱动插接板绕水平轴的转动,本发明中所涉及的为临床医疗器械提供支撑的位姿调整设备不仅操作方便,定位准确,还能显著减轻医务人员的工作负担。(The invention discloses a pose adjusting device for providing support for clinical medical instruments, which comprises a lifting inner arm, a lifting outer arm, a first hand wheel, a second hand wheel, a transverse moving outer arm, a transverse moving inner arm, a swinging frame, an inserting plate, a fourth hand wheel and a third hand wheel, wherein the lifting outer arm and the lifting inner arm form a moving pair, the movement of the lifting outer arm in the vertical direction is realized through the second hand wheel, the transverse moving outer arm and the lifting outer arm form a rotating pair, the first hand wheel drives the swinging of the transverse moving outer arm, the transverse moving inner arm and the transverse moving outer arm form a moving pair, the second hand wheel drives the transverse moving inner arm to move in the horizontal direction, the swinging frame and the transverse moving inner arm form a rotating pair, the third hand wheel drives the swinging frame to rotate around a vertical shaft, the inserting plate and the swinging frame form a rotating pair, and the fourth hand wheel drives the inserting plate to rotate around a horizontal shaft, and the pose adjusting device for providing support for clinical medical instruments in the invention is convenient to operate, the positioning is accurate, and the workload of medical staff can be remarkably reduced.)

1. The utility model provides a position appearance adjustment device for clinical medical instrument provides support, includes lift inner arm (101), lift outer arm (102), first hand wheel (103), gear level (104), second hand wheel (105), sideslip outer arm (106), sideslip inner arm (107), round pin axle (108), pendulum pivot frame (109), plugboard (110), fourth hand wheel (111), third hand wheel (112), lift lead screw (113), sideslip lead screw (114), second worm wheel (115), mounting plate (116), sliding plate (117), first spring (118), gear shift board (119), sideslip bevel gear (120), revolving stage bearing (121), first worm wheel (122), its characterized in that: the inner lifting arm (101) is fixed on the side of an operating table, in order to enable the supported medical apparatus to be adjusted in the height direction, the outer lifting arm (102) and the inner lifting arm (101) form a moving pair, the outer lifting arm (102) and the inner lifting arm (101) are rotated by pulling the gear shift lever (104) upwards to realize the movement of the outer lifting arm (102) in the vertical direction, in order to enable the supported medical apparatus to swing in the horizontal direction, the outer traversing arm (106) and the outer lifting arm (102) form a rotating pair, the first hand wheel (103) drives the outer traversing arm (106) to swing, in order to enable the supported medical apparatus to move in the horizontal direction, the inner traversing arm (107) and the outer traversing arm (106) form a moving pair, and the inner traversing arm (107) moves in the horizontal direction by rotating the second hand wheel (105) after pulling the gear shift lever (104) downwards to realize the movement of the inner traversing arm (107) in the horizontal direction, in order to enable the supported medical apparatus to rotate around the vertical shaft, the swing rotating frame (109) and the transverse inner arm (107) form a rotating pair, the third hand wheel (112) drives the swing rotating frame (109) to rotate around a vertical shaft, in order to enable the supported medical instrument to rotate around a horizontal shaft, the socket plate (110) and the swing rotating frame (109) form a rotating pair, and the fourth hand wheel (111) drives the socket plate (110) to rotate around a horizontal shaft.

2. A posture adjustment apparatus for providing support to a clinical medical instrument according to claim 1, characterized in that: the lifting inner arm (101) is of a hollow square columnar structure, connecting lugs (101.1) are arranged on two sides of the lower end of the lifting inner arm, the lifting inner arm (101) can be tightly installed on the side face of an operating table through the connecting lugs (101.1) through screws to provide stable support for the posture adjusting mechanism (1), a threaded hole is formed in the center of the upper end of the lifting inner arm (101), the lifting inner arm (101) is nested and installed inside the lifting outer arm (102) and forms a moving pair, a turntable bearing (121) is arranged between the top end of the lifting outer arm (102) and the lower side of a fastening plate (116), the lifting outer arm (102) and the fastening plate (116) form a rotating pair, a first worm wheel (122) is fixedly installed at the center of the lower side of the fastening plate (116) through screws, the front end of the first hand wheel (103) is of a hand wheel structure and can be operated by hand and conveniently rotated, the rear end of the first hand wheel (103) is of a worm structure, the first hand wheel (103), the first hand wheel (103) and the lifting outer arm (102) form a rotation pair, a worm structure at the rear end of the first hand wheel (103) and a first worm wheel (122) form a worm and gear meshing relationship, an external spline is arranged at the top end of the lifting screw rod (113), inclined planes are arranged at the top ends of all protruding teeth of the external spline, the lifting screw rod (113) is installed at the inner center of the lifting outer arm (102), axial positioning is realized through a spring retainer ring for a shaft, screw rod threads are arranged on the lower half section of the lifting screw rod (113), and the screw rod threads are matched with threaded holes in the upper end of the lifting inner arm (101) to form a thread pair.

3. A posture adjustment apparatus for providing support to a clinical medical instrument according to claim 1, characterized in that: the second hand wheel (105) is arranged on the upper side of the left end of the transverse outer arm (106) and is coaxial with the lifting screw rod (113), the upper end of the second hand wheel (105) is of a hand wheel structure and can be operated by hands, the second hand wheel is convenient to rotate, the lower half part of the second hand wheel is of an outer spline structure, the lowest end of the second hand wheel is provided with a baffle plate through a screw, the upper end of the transverse bevel gear (120) is of a bevel gear structure, the lower end of the transverse bevel gear (120) is provided with an inner spline, the lower ends of all convex teeth of the inner splines are provided with inclined planes, the center of the transverse bevel gear (120) is also provided with an inner spline, the transverse bevel gear (120) and the second hand wheel (105) are coaxially arranged, the inner spline at the center of the transverse bevel gear (120) and the outer spline at the lower half part of the second hand wheel (105) form a spline meshing relationship, namely, the transverse bevel gear (120) can, trade baffle (119) right-hand member and install in sideslip bevel gear (120) intermediate position, both constitute the revolute pair, trade baffle (119) left end is equipped with rectangle cavity and two parallel through-hole spouts, sliding plate (117) are installed in the rectangle cavity of trading baffle (119) left end, and can slide in two parallel through-hole spouts, be equipped with first spring (118) between sliding plate (117) and the rectangle cavity right-hand member, gear shift lever (104) left end is equipped with the horizontal pole, conveniently pull from top to bottom in handheld, shift gears, its intermediate position constitutes the revolute pair with sideslip outer arm (106) left end, gear shift lever (104) right-hand member constitutes the revolute pair with sliding plate (117) side both ends.

4. A posture adjustment apparatus for providing support to a clinical medical instrument according to claim 1, characterized in that: the transverse moving inner arm (107) is of a hollow square columnar structure, a threaded hole is formed in the left end of the transverse moving inner arm, the transverse moving inner arm (107) is arranged inside the transverse moving outer arm (106) in a nested mode and forms a moving pair, the transverse moving screw rod (114) is arranged inside the transverse moving outer arm (106) and forms a rotating pair, axial positioning of the transverse moving screw rod (114) is achieved through a shaft through elastic single rings, a bevel gear is arranged at the left end of the transverse moving screw rod (114), screw threads are formed in the right half portion of the transverse moving screw rod, and the screw threads are installed with the threaded hole in the left end of the transverse moving inner arm (107) in a.

5. A posture adjustment apparatus for providing support to a clinical medical instrument according to claim 1, characterized in that: after a cross bar at the left end of the shift lever (104) is pulled upwards, an internal spline at the lower end of the transverse bevel gear (120) can be meshed with an external spline at the top end of the lifting screw rod (113), and the state is kept under the action of the elastic force of the first spring (118), and the second hand wheel (105) is rotated to drive the lifting screw rod (113) to rotate through the transverse bevel gear (120), so that the lifting outer arm (102) is lifted and lowered; after a cross rod at the left end of a gear shifting rod (104) is pulled downwards, a bevel gear structure at the upper end of a transverse bevel gear (120) can be meshed with a bevel gear at the left end of a transverse screw rod (114), the state is kept under the action of the elastic force of a first spring (118), and a second hand wheel (105) is rotated to drive the transverse screw rod (114) to rotate through the transverse bevel gear (120), so that the transverse inner arm (107) can stretch and move left and right.

6. A posture adjustment apparatus for providing support to a clinical medical instrument according to claim 1, characterized in that: the left end of the pin shaft (108) is fixedly connected with the left end of the swing frame (109) through a screw, the transverse inner arm (107) and the swing frame (109) form a rotation pair through the pin shaft (108), the second worm wheel (115) is coaxially installed with the pin shaft (108) and is fixedly connected with the pin shaft (108) through a key connection, the third hand wheel (112) is installed at the position, close to the right end, of the transverse inner arm (107) and forms the rotation pair, the front end of the third hand wheel (112) is of a hand wheel structure and can be operated by hands and is convenient to rotate, the rear end of the third hand wheel (112) is of a worm structure, the worm structure is meshed with the second worm wheel (115) to form a worm and gear meshing relationship, the right end of the swing frame (109) and the rear end of the insertion plate (110) form the rotation pair, the left end of the insertion plate (110) is provided with the worm wheel structure, the fourth hand wheel (111) is installed on the upper side of the right end of the, the hand-operated and convenient-to-rotate hand-operated four-wheel type window inserting device is characterized in that the rear end of the fourth hand wheel (111) is of a worm structure, the worm structure is meshed with a worm gear structure at the left end of the inserting plate (110) to form a worm and gear meshing relation, a flat plate structure is arranged at the right end of the inserting plate (110), four inserting columns (110.1) are arranged on the upper side of the flat plate, an inclined plane is arranged at the top end of each inserting column (110.1), a hook is arranged at the middle position of each inserting column, and a rectangular window is formed in the inserting.

Technical Field

The invention relates to the technical field of medical instruments, in particular to pose adjusting equipment for providing support for clinical medical instruments.

Background

The kneecap is positioned in front of the knee joint, is the largest seed bone in a human body and is embedded in the quadriceps femoris tendon, is a triangular flat bone and participates in the formation of the knee joint, and the kneecap has the main functions of protecting the knee joint, avoiding the friction of the quadriceps femoris tendon on the cartilage surface of the condyle of the femur, transmitting the strength of the quadriceps femoris muscle and participating in the formation of a knee stretching device; also has the functions of maintaining the stability of the knee joint in the semi-squatting position, preventing the excessive adduction, abduction and flexion of the knee joint, having the function of a bicycle chain and increasing the rotation capacity of the knee joint.

Patellar fracture is a common fracture type in clinic, has high incidence rate, accounts for about 10 percent of all fractures, and is often caused by direct violence, indirect violence and mixed violence; the direct violence is mostly directly hit on the patella due to external force, such as bruise, kicking injury and the like, the fracture is mostly comminuted, the anterior tendinous membrane of the patella, the two side aponeuroses of the patella and the joint capsule are mostly kept intact, and the fracture can also be transverse fracture; indirect violence is usually caused by the violent contraction of quadriceps femoris muscle, which causes traction injury, such as sudden slipping, half flexion of knee joint, sudden contraction of quadriceps femoris muscle, upward traction of patella, and fixation of patella ligament at the lower part of patella, thereby causing fracture of patella.

When the patella fracture is repaired in a surgical mode, firstly, the patella main body and the fracture part need to be reset, then the patella main body and the fracture part are connected through the steel nails, in order to keep the stability of the fracture part after the fracture part is reset, the steel nails need to be arranged in an array along the circumferential direction of the patella, then, steel wires penetrate through the steel nails and are fastened and cut off, in the process of tightening the steel wires, tightening equipment needs to be used for operation, and generally, the following three conditions are common in the leading-out modes after the steel wires fix the steel needles, one is leading out of one single wire head, one is leading out of two wire heads, and the other is leading out of two single wire heads; at present, operations of leading out single-thread steel wire wires and leading out double-thread steel wire wires are respectively operated by two different tightening devices, and the operations of leading out two single-thread steel wire wires need two single-thread tightening devices, so that the medical cost is wasted, the space occupancy rate of the operation devices is increased, and the convenience of operation of doctors is influenced.

The Chinese patent with publication number CN110037788A discloses a medical instrument applied to patellar fracture repair, which comprises a rotating mechanism, a single-thread-head tensioning mechanism, a double-thread-head tensioning mechanism, a tensioning control mechanism and a power source, wherein the single-thread-head tensioning mechanism and the double-thread-head tensioning mechanism are respectively positioned at two ends of the rotating mechanism; after analysis, the technical scheme related in the invention patent has the following defects:

1) one device cannot solve the problem of operation involving two single-line head leading-out operations, and in case of the operation, two medical staff can only be used for operating the two devices to participate in the operation, so that medical resources are wasted, the working space of a doctor is occupied, and the operation efficiency is reduced;

2) in the technical scheme related to the invention patent, a single-thread-head tensioning mechanism and a double-thread-head tensioning mechanism are respectively positioned at two ends of a rotating mechanism, namely the equipment is simultaneously provided with the single-thread-head tensioning mechanism and the double-thread-head tensioning mechanism, but only one tensioning mechanism is applied in the operation, and the other tensioning mechanism is idle, and the equipment is operated by hands, so that the idle tensioning mechanism not only occupies the operation space, but also increases the load of arms when the medical personnel operate and increases the burden of the medical personnel;

3) referring to the patent document specifications [0065], [0066], [0067] and the drawings 23, 24 and 25 in the attached drawings, as the sleeve I (311) with the driving helical teeth (312) and the sleeve II (313) with the driven helical teeth (314) are adopted for transmission, the technical effect which is expected to be realized is that one-way transmission cannot be realized; in the process of tightening the steel wire, a doctor needs to try tightening force for multiple times before tying the steel wire head to enable the reduction of the bone gap to achieve the best effect, so that in the process of tightening the steel wire, if excessive tightening needs to be loosened, the equipment related in the patent cannot achieve the technical effect of loosening the steel wire, only the first hand-screwed bolt (214) or the second hand-screwed bolt (227) can be opened to loosen the compressed steel wire head, and after the initial state of the equipment is recovered, the compressed steel wire head is tightened again, so that the operation efficiency is seriously influenced, and secondary injury is also caused to the damaged patella;

4) because the driving helical gear (312) and the driven helical gear (314) are actually ratchet transmission structures, the number of teeth is certain, the minimum step number which can be realized by rotating a circle in the circumferential direction is also certain, and stepless transmission cannot be realized, so that the embarrassment condition that one step is too loose and the other step is too tight easily occurs in the operation, even if the number of teeth of the helical gear is increased, the degree of too loose or too tight can only be reduced, and the over-loose or too tight degree cannot be completely eliminated, moreover, the number of teeth is increased, the tooth shape is reduced, the material has stress limit, and the number of teeth of the helical gear cannot be infinitely increased;

5) reference is made to the technical features described in the above patent document descriptions in paragraphs [0065], [0066] and [0067 ]: there is no transmission structure capable of self-locking between the first transition gear (315) and the driving shaft 238, so that the technical effect "when the first driving helical tooth 312 rotates reversely, the first driving helical tooth 312 extrudes the second driven helical tooth 314 and the second sleeve 313 floats away from the first sleeve 311" in paragraph [0065] cannot be achieved, because after the first tightening of the steel wire, the steel wire has a certain tension, which tends to rotate reversely the second driven helical tooth 314, and furthermore, the second sleeve 313 is tightly pressed against the second sleeve 313 by the floating spring 317, therefore, in practical situations, when the first driving helical tooth 312 rotates reversely, the second sleeve 313 does not float away from the first sleeve 311 but rotates reversely with the first driving helical tooth 312, so that the tightened steel wire is loosened, and the technical effect of repeatedly wrenching the wrench 305 to tighten the steel wire cannot be achieved, such technical defect that the technical solution related in the above patent cannot achieve its technical purpose, the defects in the prior art can not be solved.

Disclosure of Invention

In order to solve the problems that the long-time hand-holding of the steel wire tightening device in the prior art is easy to cause arm fatigue of medical staff and inaccurate in positioning, the invention aims to provide the pose adjusting device for supporting clinical medical instruments, which has the advantages of novel structure, convenience in operation and high modularization degree, can quickly adjust the steel wire tightening device to a proper position and a proper pose according to the actual operation requirement, keeps accurate positioning for a long time, saves the operation time, lightens the burden of the medical staff and improves the operation quality.

The technical scheme adopted by the invention is as follows: the utility model provides a position appearance adjustment device for clinical medical instrument provides support, hereinafter called position appearance guiding mechanism, includes lift inner arm, lift outer arm, first hand wheel, gear level, second hand wheel, sideslip outer arm, sideslip inner arm, round pin axle, pendulum revolving rack, plugboard, fourth hand wheel, third hand wheel, lift lead screw, sideslip lead screw, second worm wheel, mounting plate, sliding plate, first spring, trades baffle, sideslip bevel gear, revolving stage bearing, first worm wheel, its characterized in that: the inner lifting arm is fixed on the side of the operating bed, in order to adjust the supported medical apparatus in the height direction, the outer lifting arm and the inner lifting arm can form a moving pair, the second hand wheel is rotated after the gear lever is pulled upwards to realize the movement of the outer lifting arm in the vertical direction, in order to enable the supported medical apparatus to swing in the horizontal direction, the outer transverse arm and the outer lifting arm form a rotating pair, the first hand wheel drives the outer transverse arm to swing, in order to enable the supported medical apparatus to move in the horizontal direction, the inner transverse arm and the outer transverse arm form a moving pair, in order to enable the second hand wheel to rotate after the gear lever is pulled downwards to realize the movement of the inner transverse arm in the horizontal direction, in order to enable the supported medical apparatus to rotate around the vertical shaft, the swing frame and the inner transverse arm form a rotating pair, and the third hand wheel drives the swing frame to rotate around the vertical shaft, in order to enable the supported medical apparatus to rotate around the horizontal shaft, the insertion plate and the swinging frame form a rotation pair, and the insertion plate is driven to rotate around the horizontal shaft by the fourth hand wheel.

Furthermore, the lifting inner arm is of a hollow square column structure, connecting lugs are arranged on two sides of the lower end of the lifting inner arm, the lifting inner arm can be tightly installed on the side face of the operating table through screws by the connecting lugs to provide stable support for the pose adjusting mechanism, a threaded hole is formed in the central position of the upper end of the lifting inner arm, the lifting inner arm is nested in the lifting outer arm and forms a moving pair with the lifting outer arm, a turntable bearing is arranged between the top end of the lifting outer arm and the lower side of the fastening plate, so that the lifting outer arm and the fastening plate form a rotating pair, a first worm wheel is fixedly installed at the central position of the lower side of the fastening plate through screws, the front end of the first hand wheel is of a hand wheel structure which can be operated by hand and is convenient to rotate, the rear end of the first hand wheel is of a worm structure, the first hand wheel is installed at a position close to the top end of the lifting outer arm, the first, the top end of the lifting screw rod is provided with an external spline, the top end of each protruding tooth of the external spline is provided with an inclined plane, the lifting screw rod is installed in the center of the inside of the lifting outer arm, axial positioning is realized through a spring collar for a shaft, the lower half section of the lifting screw rod is provided with screw rod threads, and the screw rod threads are matched with threaded holes in the upper end of the lifting inner arm to form a thread pair.

Furthermore, the second hand wheel is arranged on the upper side of the left end of the transverse outer arm and is coaxial with the lifting screw rod, the upper end of the second hand wheel is of a hand wheel structure which can be operated by hands and is convenient to rotate, the lower half part of the second hand wheel is of an outer spline structure, the lowest end of the second hand wheel is provided with a baffle plate through a screw, the upper end of the transverse bevel gear is of a bevel gear structure, the lower end of the transverse bevel gear is provided with an inner spline structure, the lower ends of the projecting teeth of the inner splines are provided with inclined planes, the center of the transverse bevel gear is also provided with an inner spline, the transverse bevel gear is coaxially arranged with the second hand wheel, the inner spline at the center of the transverse bevel gear and the outer spline at the lower half part of the second hand wheel form a spline meshing relationship, namely the transverse bevel gear can move up and down, the left end of the gear shifting plate is provided with a rectangular cavity and two parallel through hole chutes, the sliding plate is installed in the rectangular cavity at the left end of the gear shifting plate and can slide in the two parallel through hole chutes, a first spring is arranged between the sliding plate and the right end of the rectangular cavity, the left end of the gear shifting rod is provided with a cross rod which is convenient to pull up and down in a hand-held manner for shifting, the middle position of the gear shifting rod and the left end of the transverse outer arm form a revolute pair, and the right end of the gear shifting rod and the two ends of the side surface of the sliding plate form a.

Furthermore, the transverse moving inner arm is of a hollow square columnar structure, the left end of the transverse moving inner arm is provided with a threaded hole, the transverse moving inner arm is nested and installed inside the transverse moving outer arm and forms a moving pair, the transverse moving screw rod is installed inside the transverse moving outer arm and forms a rotating pair, axial positioning of the transverse moving screw rod is achieved through a single elastic ring for a shaft, the left end of the transverse moving screw rod is provided with a bevel gear, the right portion of the transverse moving screw rod is provided with screw rod threads, and the screw rod threads are installed in a matched mode with the threaded hole in the left end of the transverse moving inner.

Furthermore, after the cross rod at the left end of the gear shifting rod is pulled upwards, the internal spline at the lower end of the transverse bevel gear can be meshed with the external spline at the top end of the lifting screw rod, and the state is kept under the action of the elastic force of the first spring, and the second hand wheel is rotated to drive the lifting screw rod to rotate through the transverse bevel gear, so that the lifting outer arm is lifted and lowered; after a cross rod at the left end of the gear shifting rod is pulled downwards, a bevel gear structure at the upper end of the transverse bevel gear can be meshed with a bevel gear at the left end of the transverse screw rod, the transverse bevel gear structure is kept in the state under the action of the elastic force of the first spring, and the second hand wheel can be rotated to drive the transverse bevel gear to rotate so as to realize the left-right telescopic movement of the transverse inner arm.

Furthermore, the pin shaft is fastened and connected with the left end of the swing frame through a screw, the transverse inner arm forms a rotation pair with the swing frame through the pin shaft, a second worm wheel is coaxially installed with the pin shaft and is connected with the pin shaft in a fastened manner through a key, a third hand wheel is installed at the position, close to the right end, of the transverse inner arm and forms the rotation pair, the front end of the third hand wheel is of a hand wheel structure and can be operated by hands and conveniently rotated, the rear end of the third hand wheel is of a worm structure and is meshed with the second worm wheel to form a worm and gear meshing relationship, the right end of the swing frame and the rear end of the insertion plate form the rotation pair, the left end of the insertion plate is provided with the worm wheel structure, the fourth hand wheel is installed on the upper side of the right end of the swing frame and forms the rotation pair, the front end of the fourth hand wheel is of the hand wheel structure and can be operated by hands and conveniently rotated, the rear, the worm gear meshing relation is formed, a flat plate structure is arranged at the right end of the insertion plate, four insertion columns are arranged on the upper side of the flat plate, an inclined plane is arranged at the top end of each insertion column, a hook is arranged at the middle position of each insertion column, and a rectangular window is arranged at the position, close to the middle position, of the insertion plate.

The invention has the beneficial effects that:

compared with the traditional handheld steel wire tightening device, the pose adjusting mechanism with five degrees of freedom is adopted in the invention to provide support and pose adjustment for the double-wire-head tightening mechanism and the single-wire-head tightening mechanism, so that the device has the advantages of high degree of freedom, stable support, high position precision and long continuous support time;

secondly, a modularized connecting structure is adopted between the pose adjusting mechanism and the connecting mechanism, so that quick connection and disconnection can be realized, a large amount of operation time can be saved by modularized quick assembly and disassembly, and the operation efficiency and the operation quality are improved;

drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the pose adjusting mechanism, the connecting mechanism and the double-thread-head tightening mechanism after being assembled.

Fig. 3 is a schematic structural view of the posture adjustment mechanism.

Fig. 4 is a schematic sectional structure view of the posture adjustment mechanism.

Fig. 5 is a schematic view of a partial sectional structure of the pose adjusting mechanism after the shift lever is pulled upward.

Fig. 6 is a schematic view of a partial sectional structure of the posture adjustment mechanism after the shift lever is pulled down.

Fig. 7 is a schematic view of the top end structure of the lifting screw rod.

Fig. 8 is a structural schematic diagram of the second hand wheel.

Fig. 9 is a partial sectional view schematically showing a traverse bevel gear.

Fig. 10 is a schematic structural view of the change baffle.

Fig. 11 is a partially exploded schematic view of the posture adjustment mechanism.

Fig. 12 is a schematic structural view of the connection mechanism.

Fig. 13 is an exploded view of the attachment mechanism.

Fig. 14 is a partial sectional view of the connection mechanism connected to the plugboard and the dual-wire rack.

Fig. 15 is a schematic partial sectional view of the connection mechanism connected to the plugboard and the dual-line-head rack.

Fig. 16 is a schematic structural view of a double-thread-head tightening mechanism.

Fig. 17 is a cross-sectional structural schematic view of the double thread end take-up mechanism.

Fig. 18 is a schematic longitudinal sectional view of the double wire head tightening mechanism.

Fig. 19 is an exploded view of the dual thread take-up mechanism.

Fig. 20 is a schematic structural diagram of a two-wire-head rack.

Fig. 21 is a partial sectional view schematically showing the structure of the first reel.

Fig. 22 is a schematic view of the double-end wire take-up mechanism taking up the double-end wire.

Fig. 23 is a partial cross-sectional schematic view of a single-thread-head tightening mechanism.

FIG. 24 is a schematic view of a single thread take-up mechanism taking up a single thread of steel wire.

Reference numerals: 1 pose adjusting mechanism, 101 lifting inner arm, 101.1 connecting lug, 102 lifting outer arm, 103 first hand wheel, 104 shift lever, 105 second hand wheel, 106 transverse outer arm, 107 transverse inner arm, 108 pin shaft, 109 swinging frame, 110 plug board, 110.1 plug post, 111 fourth hand wheel, 112 third hand wheel, 113 lifting screw rod, 114 transverse screw rod, 115 second worm wheel, 116 fastening board, 117 sliding board, 118 first spring, 119 shift plate, 120 transverse bevel gear, 121 turntable bearing and 122 first worm wheel;

2, a connecting mechanism, a 201 main body frame, 201.1 jacks, a 202 bottom plate, a 203 clamping plate, 204 set screws, 205 buttons, 206 second springs, 207 third springs and 208 hooks;

3 double-thread-end tightening mechanism, 301 double-thread-end frame, 301.1 spile, 302 fifth hand wheel, 303 first wrench, 304 first reel, 305 first locking knob, 306 left guide wheel, 307 left connecting rod, 308 sliding groove component, 309 screw rod, 310 left connecting rod, 311 left long rod, 312 left guide wheel, 313 left three guide wheel, 314 right three guide wheel, 315 right two guide wheel, 316 right long rod, 317 right connecting rod, 318 right connecting rod, 319 right guide wheel, 320 second locking knob, 321 second reel, 322 second wrench, 323 first bevel gear set, 324 right end cap, 325 second worm gear, 326 first planetary bevel gear, 327 left end cap, 328 second bevel gear set, 329 second planetary bevel gear;

4 single-thread-end tightening mechanism, 401 single-thread-end rack, 402 sixth hand wheel, 403 third winding drum, 404 third wrench, 405 worm gear set;

5 single thread steel wire, 6 double thread steel wire, 6.1 left thread end and 6.2 right thread end.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 and 2, a medical instrument applied to a patella repair surgery comprises a pose adjusting mechanism 1, a connecting mechanism 2, a double-thread tightening mechanism 3 and a single-thread tightening mechanism 4, and is characterized in that: the pose adjusting mechanism 1 can be quickly connected and disconnected with the connecting mechanism 2, a modular connecting structure is also adopted between the double-wire-head tightening mechanism 3 and the single-wire-head tightening mechanism 4 and the connecting mechanism 2, the rapid connection and disconnection can be realized, the pose adjusting mechanism 1 is used for realizing the position and posture adjustment of the double-wire-head tightening mechanism 3 and the single-wire-head tightening mechanism 4, the double-wire-head tightening mechanism 3 and the single-wire-head tightening mechanism 4 can always keep required positions and postures in work, the double-wire-head tightening mechanism 3 can tighten steel wires led out by double wires and the steel wires led out by two single wires, and the single-wire-head tightening mechanism 4 can tighten the steel wires led out by one single wire head.

As shown in fig. 3 and 4, the posture adjustment mechanism 1 includes a lifting inner arm 101, a lifting outer arm 102, a first hand wheel 103, a shift lever 104, a second hand wheel 105, a traverse outer arm 106, a traverse inner arm 107, a pin 108, a swing frame 109, a socket plate 110, a fourth hand wheel 111, a third hand wheel 112, a lifting screw 113, a traverse screw 114, a second worm wheel 115, a fastening plate 116, a sliding plate 117, a first spring 118, a shift plate 119, a traverse bevel gear 120, a turntable bearing 121, and a first worm wheel 122, the lifting inner arm 101 is fixed to the side of the operating table, the lifting outer arm 102 and the lifting inner arm 101 constitute a moving pair, the lifting outer arm 102 is vertically moved by turning the second hand wheel 105 after pulling the shift lever 104 upward, and the supported medical device is horizontally swung, the outer transverse arm 106 and the outer lifting arm 102 form a rotation pair, the outer transverse arm 106 is driven to swing by the first hand wheel 103, in order to enable a supported medical instrument to move in the horizontal direction, the inner transverse arm 107 and the outer transverse arm 106 form a movement pair, the inner transverse arm 107 is driven to move in the horizontal direction by turning the second hand wheel 105 after the gear shift lever 104 is turned downwards, in order to enable the supported medical instrument to rotate around a vertical shaft, the swing frame 109 and the inner transverse arm 107 form a rotation pair, the swing frame 109 is driven to rotate around the vertical shaft by the third hand wheel 112, in order to enable the supported medical instrument to rotate around a horizontal shaft, the plug board 110 and the swing frame 109 form a rotation pair, and the plug board 110 is driven to rotate around the horizontal shaft by the fourth hand wheel 111.

As shown in fig. 5, 6 and 7, the inner lifting arm 101 is a hollow square column structure, two sides of the lower end of the inner lifting arm are provided with connecting lugs 101.1, the inner lifting arm 101 can be tightly fixed to the side of the operating table through the connecting lugs 101.1 by screws to provide stable support for the posture adjustment mechanism 1, the center of the upper end of the inner lifting arm 101 is provided with a threaded hole, the inner lifting arm 101 is nested and mounted inside the outer lifting arm 102, and both the inner lifting arm and the outer lifting arm form a moving pair, a turntable bearing 121 is arranged between the top end of the outer lifting arm 102 and the lower side of the fastening plate 116 to enable the outer lifting arm 102 and the fastening plate 116 to form a rotating pair, a first worm wheel 122 is fixedly mounted at the center of the lower side of the fastening plate 116 by screws, the front end of the first hand wheel 103 is a hand wheel structure for manual operation and convenient rotation, the rear end of the first hand wheel 103 is a worm structure, the first hand wheel 103 is mounted, the worm structure at the rear end of the first hand wheel 103 and the first worm wheel 122 form a worm and gear meshing relationship, the top end of the lifting screw rod 113 is provided with an external spline, the top ends of all protruding teeth of the external spline are provided with inclined planes, the lifting screw rod 113 is installed at the center inside the lifting outer arm 102, axial positioning is realized through a spring retainer ring for a shaft, the lower half section of the lifting screw rod 113 is provided with screw rod threads, and the screw rod threads are matched with threaded holes in the upper end of the lifting inner arm 101 to form a thread pair.

As shown in fig. 5, 6, 8, 9 and 10, the second hand wheel 105 is mounted on the upper side of the left end of the outer traverse arm 106 and is coaxial with the lifting screw 113, the upper end of the second hand wheel 105 is of a hand wheel structure which can be operated by hand and is convenient to rotate, the lower half part of the second hand wheel is of an outer spline structure, the lowest end of the second hand wheel is provided with a baffle plate through a screw, the upper end of the traverse bevel gear 120 is of a bevel gear structure, the lower end of the traverse bevel gear 120 is provided with an inner spline structure, the lower end of each protruding tooth of each inner spline is provided with an inclined plane, the center of the traverse bevel gear 120 is also provided with an inner spline, the traverse bevel gear 120 is mounted coaxially with the second hand wheel 105, the inner spline at the center of the traverse bevel gear 120 and the outer spline at the lower half part of the second hand wheel 105 form a spline engagement relationship, that the traverse, the right end of the shifting plate 119 is mounted in the middle of the transverse shifting bevel gear 120, the shifting plate and the bevel gear 120 form a revolute pair, the left end of the shifting plate 119 is provided with a rectangular cavity and two parallel through hole chutes, the sliding plate 117 is mounted in the rectangular cavity at the left end of the shifting plate 119 and can slide in the two parallel through hole chutes, a first spring 118 is arranged between the sliding plate 117 and the right end of the rectangular cavity, the left end of the shifting rod 104 is provided with a cross rod which is convenient to pull up and down by hand to shift gears, the middle of the shifting rod and the left end of the transverse shifting outer arm 106 form a revolute pair, and the right end of the shifting.

As shown in FIG. 4, the inner transverse arm 107 is a hollow square column structure, the left end of the inner transverse arm is provided with a threaded hole, the inner transverse arm 107 is nested inside the outer transverse arm 106 and forms a moving pair, the transverse screw rod 114 is installed inside the outer transverse arm 106 and forms a rotating pair, the axial positioning of the transverse screw rod 114 is realized by a single elastic circle for one shaft, the left end of the transverse screw rod 114 is provided with a bevel gear, the right part of the transverse screw rod is provided with screw rod threads, and the screw rod threads are matched with the threaded hole at the left end of the inner transverse arm 107 to form a thread pair.

As shown in fig. 5 and 6, after the cross bar at the left end of the shift lever 104 is pulled upwards, the internal splines at the lower end of the traverse bevel gear 120 can be engaged with the external splines at the top end of the lifting screw 113, and the state is maintained under the elastic force of the first spring 118, and the second hand wheel 105 is rotated to drive the lifting screw 113 to rotate through the traverse bevel gear 120, so that the lifting outer arm 102 is lifted and lowered; after the transverse rod at the left end of the shift lever 104 is pulled downwards, the bevel gear structure at the upper end of the transverse bevel gear 120 can be meshed with the bevel gear at the left end of the transverse screw rod 114, and the transverse bevel gear structure is kept in the state under the action of the elastic force of the first spring 118, and the second hand wheel 105 can be rotated to drive the transverse screw rod 114 to rotate through the transverse bevel gear 120, so that the transverse inner arm 107 can be moved in a left-right telescopic mode.

As shown in fig. 4 and 11, the pin 108 is fastened to the left end of the swing frame 109 by a screw, the inner transverse arm 107 forms a rotation pair with the swing frame 109 by the pin 108, the second worm wheel 115 is coaxially mounted with the pin 108 and is fastened to the pin 108 by a key connection, the third hand wheel 112 is mounted at a position close to the right end of the inner transverse arm 107 and forms a rotation pair, the front end of the third hand wheel 112 is of a hand wheel structure and can be operated by hand and conveniently rotated, the rear end of the third hand wheel 112 is of a worm structure and is meshed with the second worm wheel 115 to form a worm-gear meshing relationship, the right end of the swing frame 109 and the rear end of the insertion plate 110 form a rotation pair, the left end of the insertion plate 110 is provided with a worm wheel structure, the fourth hand wheel 111 is mounted on the upper side of the right end of the swing frame 109 and forms a rotation pair, the front end of the fourth hand wheel 111 is of a hand wheel structure and can be operated by, and the worm structure meshes with the worm gear structure at the left end of the plugboard 110 to form a worm and gear meshing relationship, the right end of the plugboard 110 is provided with a flat plate structure, the upper side of the flat plate is provided with four pluging columns 110.1, the top end of each pluging column 110.1 is provided with an inclined plane, the middle position of each pluging column is provided with a hook, and the plugboard 110 is provided with a rectangular window close to the middle position.

As shown in fig. 12 and 13, the connecting mechanism 2 includes a main body frame 201, a bottom plate 202, a clamping plate 203, a set screw 204, a button 205, a second spring 206, a third spring 207, and a hook 208, wherein a rectangular groove is provided on the upper side of the front end of the main body frame 201, two rectangular insertion holes 201.1 are provided on the front end of the rectangular groove, a through hole is provided near the middle position of the rectangular groove, a hook cavity and a button hole in the vertical direction are provided inside the rear end of the main body frame 201, the hook 208 is installed in the hook cavity and can slide back and forth in the hook cavity, an inclined plane structure is provided on the front end of the hook 208, a rectangular opening is provided on the middle position, an inclined plane is provided on the rear side of the button 205, the button 205 passes through the rectangular opening in the middle of the hook 208 and is installed in the button hole of the main body frame 201, two threaded holes communicated with the hook cavity, two third springs 207 set up respectively between two holding screw 204 and couple 208, main part frame 201 downside is equipped with the cardboard cavity, cardboard 203 is installed in the cardboard cavity, and can be in the cardboard cavity back-and-forth movement, be equipped with four horseshoe trompils on the cardboard, cardboard 203 rear end is equipped with a pressure board, the intermediate position is equipped with the rectangle trompil, be provided with a second spring 206 between cardboard 203 front end position and the main part frame 201, be equipped with four round holes that are used for inserting peg post 110.1 on the bottom plate 202, bottom plate 202 installs in main part frame 201 downside, and realize fastening connection between them through the screw, round hole coaxial center position is equipped with the through-hole in the middle of the rectangular recess with main part frame 201 in the middle of bottom.

As shown in fig. 14 and 15, in an initial state, under the action of the elastic force of the third spring 207, the hook 208 is located at the front end of the hook cavity, the inclined surface structure at the front end of the hook 208 extends into the rectangular groove at the upper side of the front end of the main body frame 201, the button 205 is pressed downwards, and the inclined surface at the rear side pushes the hook 208 to move backwards, so that the inclined surface structure at the front end of the hook 208 retracts into the hook cavity; after releasing the pressing of the button 205, the hook 208 is restored to the original position by the elastic force of the third spring 207.

As shown in fig. 14 and 15, under the action of the elastic force of the second spring 206, the locking plate 203 is located at the rear end of the cavity of the locking plate, after the four plugging columns 110.1 arranged on the plugging plate 110 are inserted into the four round holes arranged on the bottom plate 202, under the action of the inclined planes at the top ends of the plugging columns 110.1 and the second spring 206, the locking plate 203 slides forwards and rebounds backwards, and the straight edges of the four horseshoe-shaped openings on the locking plate 203 are clamped into the hooks at the middle positions of the four plugging columns 110.1, so that the quick connection of the connecting mechanism 2 and the pose adjusting mechanism 1 is realized; the pressing plate at the rear end of the clamping plate 203 is pressed to enable the pressing plate 203 to move forwards, the straight edges of the four horseshoe-shaped holes are separated from the hooks at the middle positions of the four inserting columns 110.1, the connecting mechanism 2 is taken away upwards, and the connecting mechanism 2 and the pose adjusting mechanism 1 can be rapidly disengaged.

The set screw 204 and the main body frame 201 form a thread pair connection, and the pressing and resilience of the button 205 can be adjusted by adjusting the pre-tightening elastic force of the third spring 207.

As shown in fig. 16, 17, 18, 19, 20, the double wire-head tightening mechanism 3 includes a double wire-head frame 301, a fifth hand wheel 302, a first wrench 303, a first reel 304, a first locking knob 305, a left guide wheel 306, a left connecting rod 307, a chute member 308, a screw 309, a left connecting rod 310, a left long rod 311, a left guide wheel 312, a left guide wheel 313, a right guide wheel 314, a right guide wheel 315, a right long rod 316, a right connecting rod 317, a right connecting rod 318, a right guide wheel 319, a second locking knob 320, a second reel 321, a second wrench 322, a first bevel gear set 323, a right end cover 324, a second worm wheel 325, a first planetary bevel gear 326, a left end cover 327, a second bevel gear set 328, a second planetary bevel gear 329, a left connecting rod 307, a left connecting rod 310, a left long rod 311, a double wire-head frame 301, a right connecting rod 318, a left bevel gear set, a right bevel gear set, a, The right two connecting rods 317 and the right long rod 316 are arranged at the right front end of the double-thread end rack 301 and form a trapezoid, the sliding groove member 308 and the screw 309 are arranged at the middle position of the front end of the double-thread end rack 301, for adjusting the opening position of the left long rod 311 and the right long rod 316, the first wrench 303, the first winding drum 304 and the first locking knob 305 are arranged at the left side of the double-thread-head rack 301, used for tightening the left wire end 6.1 or a first steel wire, a second locking knob 320, a second winding drum 321 and a second wrench 322 are arranged at the right side of the double-wire-end rack 301, the fifth hand wheel 302 is used for tightening the right thread head 6.2 or the second steel wire, and the fifth hand wheel drives the first winding drum 304 and the second winding drum 321 to rotate through a transmission structure consisting of a first bevel gear group 323, a right end cover 324, a second worm gear 325, a first planetary bevel gear 326, a left end cover 327, a second bevel gear group 328 and a second planetary bevel gear 329, so that tightening and loosening of the steel wire led out by the double thread head or the steel wire led out by the two single thread heads are realized.

The two sides of the front end of the double-line-head rack 301 are respectively provided with an extending arm, the rear end of the double-line-head rack 301 is of a double-layer structure formed by an upper plate and a lower plate, the middle position of the upper plate of the double-line-head rack 301 is provided with a threaded hole, the lower plate is of a rectangular structure with the same size as the rectangular groove on the upper side of the front end of the main body frame 201, the front end of the lower plate is provided with two plug plates 301.1, the rear ends of the upper plate and the lower plate are provided with coaxial and through round holes, the upper end of a fifth hand wheel 302 is of a hand wheel structure which can be operated by hands and is convenient to rotate, the middle part of the fifth hand wheel is of a worm structure, the lower end of the fifth hand wheel 302 is arranged in the round holes on the rear ends of the upper plate and the lower plate of the double-line-head rack 301, the second worm wheel 325 is arranged between the upper plate, the right end cover 324 is fastened and connected with the right end of the second worm gear 325 through a screw, the left end cover 327 is fastened and connected with the left end of the second worm gear 325 through a screw, the first bevel gear set 323 and the right end cover 324 form a rotating pair, both ends of the first bevel gear set 323 are provided with bevel gear structures, the bevel gear structure at the left end is simultaneously meshed with the first planetary bevel gear 326 and the second planetary bevel gear 329, the second bevel gear set 328 and the left end cover 327 form a rotating pair, both ends of the second bevel gear set 328 are provided with bevel gear structures, and the bevel gear structure at the right end is simultaneously meshed with the first planetary bevel gear 326 and the second planetary bevel gear 329.

As shown in fig. 21 and 22, a variable diameter groove is formed in a cylindrical side surface of the first winding drum 304, so that a left thread end 6.1 penetrating into the variable diameter groove is excessively smooth, the width of the variable diameter groove can only accommodate a single steel wire to penetrate into the variable diameter groove, a first wrench 303 is installed at a position close to the bottom end of the variable diameter groove, an eccentric wheel structure is arranged at the lower end of the first wrench 303, after the left thread end 6.1 penetrates into the variable diameter groove and passes through a gap between the eccentric wheel and the variable diameter groove, the first wrench 303 is pulled counterclockwise, so that the eccentric wheel structure can be pressed against the left thread end 6.1, a threaded hole is formed in the first winding drum 304, a first locking knob 305 and the threaded hole form a thread pair, the first winding drum 304 is installed at the left side of the double thread head frame 301, both form a rotation pair, a bevel gear structure is arranged at the lower end of the first winding drum; a variable diameter groove is arranged in the cylindrical side surface of the second winding drum 321, a right thread end 6.2 which penetrates into the variable diameter groove is excessively smooth, the width of the variable diameter groove can only accommodate a single steel wire to penetrate into the variable diameter groove, a second wrench 322 is arranged at a position close to the bottom end of the variable diameter groove, an eccentric wheel structure is arranged at the lower end of the second wrench 322, after the right thread end 6.2 penetrates into the variable diameter groove and passes through a gap between the eccentric wheel and the variable diameter groove, the second wrench 322 is pulled clockwise, the eccentric wheel structure can be tightly pressed against the right thread end 6.2, a threaded hole is arranged in the second winding drum 321, the threaded hole of the second locking knob 320 forms a thread pair, the second winding drum 321 is arranged on the right side of the double-thread-end frame 301, the second winding drum 321 and the double-thread-end frame constitute a rotating pair, a bevel gear structure.

As shown in fig. 16 and 18, the front end of the screw 309 is provided with a manually rotatable disk structure, the rear end of the screw is provided with a thread structure, the thread structure is matched and installed with a threaded hole at the middle position of the upper plate of the double-thread-head rack 301 to form a thread pair, the middle position of the chute member 308 is provided with a round hole, the left side and the right side are provided with a long-strip opening, and the screw 309 is installed in the round hole at the middle position of the chute member 308 to form a rotation pair.

As shown in fig. 16, one end of the left connecting rod 307 and the left extending arm of the two-string head frame 301 form a rotation pair, the other end and the rear end of the left long rod 311 form a rotation pair, one end of the left connecting rod 310 and the left extending arm of the two-string head frame 301 form a rotation pair, the other end and the middle position of the left long rod 311 form a rotation pair, the front end of the left long rod 311 is provided with a left second guide wheel 312 and a left third guide wheel 313, the rear end of the left long rod 311 is provided with a left first guide wheel 306, and the rear end of the left long rod 311 is provided with a projecting shaft extending downwards, which can slide in the long strip opening on the left.

As shown in fig. 16, one end of the right connecting rod 318 and the extending arm on the right side of the two-string head frame 301 form a rotation pair, the other end and the rear end of the right long rod 316 form a rotation pair, one end of the right connecting rod 317 and the extending arm on the right side of the two-string head frame 301 form a rotation pair, the other end and the middle position of the right long rod 316 form a rotation pair, the front end of the right long rod 316 is provided with a right two guide wheel 315 and a right three guide wheel 314, the rear end of the right long rod 316 is provided with a right one guide wheel 319, and the rear end of the right long rod 316 is provided with a projecting shaft which extends downwards and can slide in the.

As shown in fig. 16 and 22, the length of the left connecting rod 307 and the right connecting rod 318 is 40mm, the length of the left connecting rod 310 and the right connecting rod 317 is 35mm, the distance between the left end axis of the left connecting rod 307 and the left end axis of the left connecting rod 310 is 45mm, the distance between the right end axis of the left connecting rod 307 and the right end axis of the left connecting rod 310 is 50mm, the distance between the right end axis of the right connecting rod 318 and the right end axis of the right connecting rod 317 is 45mm, and the distance between the left end axis of the right connecting rod 318 and the left end axis of the right connecting rod 317 is 50 mm.

As shown in fig. 16 and 22, in an initial state, the screw 309 is retracted into the threaded hole in the middle of the upper plate of the double-thread-head rack 301, the distance between the left three guide wheels 313 and the right three guide wheels 314 is the closest, when the screw 309 is screwed out of the threaded hole, the chute member 308 moves forward, so that the left long rod 311 and the right long rod 316 move forward, and in the process, due to the action of a quadrangle with a specific side length formed by the left extending arm, the left connecting rod 307, the left two connecting rod 310, the left long rod 311, the right extending arm of the double-thread-head rack 301, the right connecting rod 318, the right two connecting rod 317 and the right long rod 316, the front ends of the left long rod 311 and the right long rod 316 are expanded, so that the left three guide wheels 313 and the right three guide wheels 314 can be adjusted to the; after the screw 309 is screwed into the threaded hole, the components return to the initial state.

As shown in fig. 23 and 24, the single-thread-head tightening mechanism 4 includes a single-thread-head frame 401, a sixth handwheel 402, a third winding drum 403, a third wrench 404, and a worm gear group 405, wherein the single-thread-head frame 401 has a lead hole at the front end, the rear end is a double-layer structure formed by an upper plate and a lower plate, the lower plate is a rectangular structure having the same size as the rectangular groove at the upper side of the front end of the main body frame 201, the front end of the lower plate is provided with two insertion plates, the rear ends of the upper plate and the lower plate are provided with coaxial and through circular holes, the upper end of the sixth handwheel 402 is a handwheel structure for manual operation and convenient rotation, the middle is a worm structure, the lower end is provided with an internal spline, the sixth handwheel 402 is installed in the circular holes at the rear ends of the upper plate and the lower plate at the rear end of the single-thread-head frame 401, the worm gear group 405 is installed between, which meshes with a worm structure in the middle of the sixth handwheel 402.

As shown in fig. 23 and 24, a variable diameter groove is formed in a cylindrical side surface of the third winding drum 403, the single-start steel wire 5 penetrating into the variable diameter groove can be smooth, the variable diameter groove can only accommodate the single steel wire to penetrate, a third wrench 404 is installed at a position close to the bottom end of the variable diameter groove, an eccentric wheel structure is arranged at the lower end of the third wrench 404, the single-start steel wire 5 penetrates into the variable diameter groove and passes through a gap between the eccentric wheel and the variable diameter groove, the third wrench 404 is pulled clockwise to enable the eccentric wheel structure to press the single-start steel wire 5, the third winding drum 403 is installed at the right side of the single-start rack 401, the third winding drum 403 and the single-start rack form a revolute pair, a bevel gear structure is arranged at the lower end of the third winding drum 403, and the bevel gear structure.

The embodiment of the invention comprises the following steps:

1) as shown in fig. 1 and 4, a connecting lug 101.1 at the lower end of the lifting inner arm 101 is fixed on the side surface of the operating table through a screw, so as to provide stable support for the posture adjusting mechanism 1, the first hand wheel 103 is rotated, and the worm structure at the rear end of the first hand wheel 103 drives the first worm wheel 122 to rotate, so that the rotation of the lateral moving outer arm 106 in the horizontal plane is realized.

As shown in fig. 5, after the cross bar at the left end of the shift lever 104 is pulled upwards, the shift plate 119 drives the traverse bevel gear 120 to move downwards to the limit position, under the thrust of the first spring 118, the internal spline structure at the lower end of the traverse bevel gear 120 is engaged with the external spline structure at the top end of the lifting screw 113, and the second hand wheel 105 is rotated, so that the torsional force can be transmitted to the lifting screw 113 through the traverse bevel gear 120, and the lifting screw 113 is rotated, thereby realizing the lifting action of the lifting outer arm 102, because the lifting screw 113 and the top end of the lifting inner arm 101 form a screw pair, and the screw pair has a self-locking property, after the second hand wheel 105 is loosened, the lifting screw 113 cannot rotate by itself due to the gravity, that is, the lifting outer arm 102 cannot descend by itself, and can only be driven by the second hand wheel 105.

As shown in fig. 6, after the cross bar at the left end of the shift lever 104 is pulled downward, the shift plate 119 drives the traverse bevel gear 120 to move upward to the limit position, the bevel gear structure at the upper end of the traverse bevel gear 120 meshes with the bevel gear structure at the left end of the traverse screw 114 under the thrust of the first spring 118, and the second hand wheel 105 is rotated, so that the traverse bevel gear 120 transmits the torsional force to the traverse screw 114 to rotate the traverse screw 114, thereby realizing the left-right telescopic movement of the traverse inner arm 107, because the traverse screw 114 and the left end of the traverse inner arm 107 form a screw pair, and the screw pair has a self-locking property, after the second hand wheel 105 is loosened, the traverse screw 114 does not rotate by itself due to the axial force, that is, the traverse inner arm 107 does not move by itself, and can only be driven by the second hand wheel 105.

As shown in fig. 4, when the third handwheel 112 is rotated, the torsional force is transmitted to the second worm wheel 115 through the worm structure at the rear end of the third handwheel 112, and the second worm wheel 115 is transmitted to the swing frame 109 through the pin 108, so that the swing frame 109 rotates around the vertical axis; when the fourth handwheel 111 is rotated, the torsional force is transmitted to the worm gear structure at the left end of the plugboard 110 through the worm structure at the rear end of the fourth handwheel 111, so that the plugboard 110 rotates around the horizontal shaft.

2) As shown in fig. 14 and 15, when the connecting mechanism 2 needs to be connected with the pose adjusting mechanism 1, the four insertion posts 110.1 on the insertion plate 110 only need to be inserted into the four circular holes formed on the base plate 202, and after the straight line edges of the four horseshoe-shaped openings on the clamping plate 203 are clamped into the hooks at the middle positions of the four insertion posts 110.1, the quick connection between the connecting mechanism 2 and the pose adjusting mechanism 1 is realized; when the connection between the connecting mechanism 2 and the pose adjusting mechanism 1 needs to be released, the connecting mechanism 2 and the pose adjusting mechanism 1 can be quickly released only by pressing the pressing plate at the rear end of the clamping plate 203, separating the straight edges of the four horseshoe-shaped holes from the hooks at the middle positions of the four insertion columns 110.1 and taking the connecting mechanism 2 away upwards.

As shown in fig. 14 and 15, when the double-wire-head tightening mechanism 3 needs to be connected with the connecting mechanism 2, first, the two insertion plates 301.1 at the front end of the lower plate of the double-wire-head rack 301 are correspondingly inserted into the two rectangular insertion holes 201.1 at the front end of the rectangular groove on the upper side of the main body rack 201, and then the rear end of the double-wire-head rack 301 is pressed downwards, so that the rear end of the lower plate of the double-wire-head rack 301 is pressed into the lower part of the inclined plane structure at the front end of the hook 208, and then the quick connection between the double-wire-head tightening mechanism 3 and; when the double-thread-end tightening mechanism 3 needs to be disconnected with the connecting mechanism 2, the button 205 is pressed downwards at first to enable the inclined plane structure at the front end of the hook 208 to retract into the hook cavity, then the rear end of the double-thread-end rack 301 is lifted upwards and the inserting plate 301.1 is pulled out of the inserting hole 201.1, and then the double-thread-end tightening mechanism 3 and the connecting mechanism 2 can be quickly disconnected; the manner and method of connecting and disconnecting the single thread take-up mechanism 4 to the connecting mechanism 2 is the same as the manner and method of connecting and disconnecting the double thread take-up mechanism 3 to the connecting mechanism 2.

3) As shown in fig. 16, 21, and 22, the double-thread tightening mechanism 3 can tighten the wire drawn from the double-thread wire and the wire drawn from the two single-thread wires.

Firstly, when the double-end steel wire 6 needs to be tightened, the screw 309 is screwed out from the threaded hole in the middle of the upper plate of the double-end machine frame 301, the screw 309 drives the sliding groove piece 308 to move forwards, meanwhile, the front ends of the left long rod 311 and the right long rod 316 are opened, and the screw 309 stops rotating after the left three guide wheels 313 and the right three guide wheels 314 reach a proper distance; then, the double-end steel wire 6 sequentially passes through the steel nails and is wound into a single ring shape, the left end 6.1 sequentially bypasses a left third guide wheel 313, a left second guide wheel 312 and a left first guide wheel 306, then penetrates into a variable-diameter groove arranged on the first reel 304 and passes through a gap between the eccentric wheel structure of the first wrench 303 and the variable-diameter groove, and then the first wrench 303 is pulled anticlockwise, so that the eccentric wheel structure of the first wrench 303 tightly presses the left end 6.1; the right thread end 6.2 sequentially bypasses the right three guide wheel 314, the right two guide wheel 315 and the right one guide wheel 319, penetrates into a diameter-variable groove arranged on the second winding drum 321, passes through a gap between the eccentric wheel structure of the second wrench 322 and the diameter-variable groove, and then is pulled clockwise by the second wrench 322, so that the eccentric wheel structure of the second wrench 322 compresses the right thread end 6.2;

the first locking knob 305 and the second locking knob 320 are rotated counterclockwise to move upwards without contacting with the upper plate of the dual-thread-head rack 301, then the fifth hand wheel 302 is rotated clockwise, the worm structure in the middle of the fifth hand wheel 302 transmits the torsion force to the second worm wheel 325, the second worm wheel 325 is rotated clockwise, the first planetary bevel gear 326 and the second planetary bevel gear 329 revolve around the axis of the second worm wheel 325 along with the second worm wheel 325, the left end bevel gear structure of the first bevel gear set 323 and the right end bevel gear structure of the second bevel gear set 328 engaged with the first planetary bevel gear 326 and the second planetary bevel gear 329 rotate clockwise, the bevel gear structure at the right end of the first bevel gear set 323 transmits the torsion force to the second winding drum 321 through the bevel gear structure at the lower end of the second winding drum 321, the second winding drum 321 rotates clockwise, the right thread head 6.2 is tightened, and the left end bevel gear structure of the second bevel gear set 328 transmits the torsion force to the first winding drum 321 through the bevel gear structure at the lower end of the first winding A winding drum 304, which makes the first winding drum 304 rotate anticlockwise and tightens the left thread end 6.1; the left thread end 6.1 and the right thread end 6.2 can be simultaneously loosened by rotating the fifth hand wheel 302 anticlockwise, and the tightening force of the double-thread steel wire 6 is adjusted by appropriately changing the rotating direction of the fifth hand wheel 302, so that the doctor can find the best effect of resetting the bone gap.

Because the worm gear and worm transmission is adopted between the fifth hand wheel 302 and the second worm gear 325, the transmission is smooth, the tightening force can be adjusted in a stepless manner, the rotating direction can be switched frequently, the tightening and loosening can be realized in time, and the self-locking function is realized, namely, the tightening and loosening of the double-end steel wire 6 can be controlled only by the fifth hand wheel 302, namely, the one-way transmission is realized, and the self-loosening condition can not occur after the double-end steel wire 6 is tightened.

Secondly, when the steel wire led out by two single-end wires needs to be tightened, the screw 309 is screwed out from the threaded hole in the middle of the upper plate of the double-end rack 301, the screw 309 drives the sliding groove piece 308 to move forwards, meanwhile, the front ends of the left long rod 311 and the right long rod 316 are opened, and the screw 309 stops rotating after the left three guide wheels 313 and the right three guide wheels 314 reach a proper distance; then, the first steel wire led out of the first steel wire passes through a variable-diameter groove arranged on the first winding drum 304 and passes through a gap between an eccentric wheel structure of the first wrench 303 and the variable-diameter groove by sequentially passing the first steel wire around a left third guide wheel 313, a left second guide wheel 312 and the left first guide wheel 306, and then the first wrench 303 is pulled anticlockwise to enable the eccentric wheel structure of the first wrench 303 to tightly press the first steel wire; the second wire drawn out of the third guide wheel sequentially bypasses the third right guide wheel 314, the second right guide wheel 315 and the first right guide wheel 319, penetrates into a diameter-variable groove arranged on the second winding drum 321, and is pulled clockwise by the second wrench 322 after passing through a gap between the eccentric wheel structure of the second wrench 322 and the diameter-variable groove, so that the eccentric wheel structure of the second wrench 322 compresses the second wire.

If the first steel wire is to be individually tightened, the first locking knob 305 is first rotated counterclockwise to move upward without contacting the upper plate of the twin-wire frame 301, the second locking knob 320 is then rotated clockwise to move downward and push against the upper plate of the twin-wire frame 301, and the rotation of the second reel 321 is locked, the rotation of the first bevel gear set 323 is also locked, and then the fifth hand wheel 302 is rotated clockwise to rotate the second worm gear 325 clockwise, since the first bevel gear set 323 cannot rotate and the bevel gear structure at the left end cannot rotate, the first and second planetary bevel gears 326 and 329 revolve around their axes along with the second worm gear 325, and also rotate around their axes, and the bevel gear structure at the right end of the gear set 328 engaged with the first and second planetary bevel gears 326 and 329 rotates clockwise, after the meshing transmission of the bevel gear structure at the left end of the second bevel gear set 328 and the bevel gear structure at the lower end of the first reel 304, the first reel 304 rotates anticlockwise, and the first steel wire is tightened; turning the fifth handwheel 302 counterclockwise allows for independent loosening of the first wire.

If the second steel wire needs to be separately tightened, the second locking knob 320 is firstly rotated counterclockwise to move upward without contacting with the upper plate of the double-end frame 301, then the first locking knob 305 is rotated clockwise to move downward and push against the upper plate of the double-end frame 301, and the rotation of the first winding drum 304 is locked, the rotation of the second bevel gear set 328 is also locked, then the fifth hand wheel 302 is rotated clockwise to rotate the second worm gear 325 clockwise, because the second bevel gear set 328 cannot rotate and the bevel gear structure at the right end cannot rotate, the first and second planetary bevel gears 326 and 329 revolve around the axes thereof along with the second worm gear 325, and simultaneously rotate around the axes thereof, and the bevel gear structure at the left end of the first bevel gear set 323 meshed with the first and second planetary bevel gears 326 and 329 rotates clockwise, after the meshing transmission of the bevel gear structure at the right end of the first bevel gear group 323 and the bevel gear structure at the lower end of the second winding drum 321 is carried out, the second winding drum 321 rotates clockwise, and the second steel wire is tightened; turning the fifth handwheel 302 counterclockwise effects a separate release of the second wire.

4) As shown in fig. 23 and 24, when the single-thread steel wire 5 needs to be tightened, the led-out single thread passes through a wire hole at the front end of the single-thread frame 401 and then penetrates into the variable-diameter groove on the third winding drum 403, until the single-thread steel wire 5 passes through a gap between the eccentric wheel and the variable-diameter groove, the third wrench 404 is wrenched clockwise, so that the eccentric wheel structure at the lower end of the third wrench 404 compresses the single-thread steel wire 5, the sixth hand wheel 402 is rotated clockwise, the worm wheel structure at the right end of the worm wheel group 405 engaged with the worm structure at the lower end of the sixth hand wheel 402 also rotates clockwise, the bevel gear structure at the lower end of the third winding drum 403 of the bevel gear structure at the left end of the worm wheel group 405 also rotates clockwise, and the third winding drum 403 rotates clockwise, so that the single-thread steel wire 5 is; the sixth handwheel 402 is rotated counterclockwise to loosen the single-start steel wire 5.

5) When the steel wire is required to be tightened in the operation, firstly, the double-wire-head tightening mechanism 3 or the single-wire-head tightening mechanism 4 is selected according to the number and the type of the led-out steel wire, and is installed on the connecting mechanism 2, and then the connecting mechanism 2 is installed on the plugboard 110; then, the second hand wheel 105 is rotated by matching with the gear shift lever 104, the first hand wheel 103, the third hand wheel 112 and the fourth hand wheel 111 are sequentially rotated, the double-wire-head tightening mechanism 3 or the single-wire-head tightening mechanism 4 is adjusted to a proper position and posture, and the steel wire can be tightened after the led-out steel wire is connected to the double-wire-head tightening mechanism 3 or the single-wire-head tightening mechanism 4.

The references to "front", "back", "left", "right", etc., are to be construed as references to orientations or positional relationships based on the orientation or positional relationship shown in the drawings or as orientations and positional relationships conventionally found in use of the product of the present invention, and are intended to facilitate the description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.