阅读说明：本技术 一种骨科定位导针导向装置 (Orthopedic positioning guide pin guiding device ) 是由 李浩亮 于 2019-12-03 设计创作，主要内容包括：一种骨科定位导针导向装置,通过本设计有效的解决了骨科定位导针导向装置在定位和导向的过程中不能准确地进行定位,徒手操作误差比较大,反复的进行穿针透视对医患双方的健康不利,并且现有导向装置无法随意移动以及固定在手术台上,以及无法很好地固定不同直径的导针的问题,包括车体,所述车体上端设有可在车体上端面前后滑动的齿轮箱,齿轮箱内设有可转动的主动齿轮,主动齿轮的左方均匀设有第一齿轮、第二齿轮和第三齿轮,第一齿轮和主动齿轮之间啮合有可上下滑动的连接齿轮,连接齿轮上方固定连接有可转动的换挡机构,形成连接齿轮分别与第一齿轮、第二齿轮和第三齿轮啮合的结构。(The utility model provides an orthopedics location guide pin guider, through this design effectual solved orthopedics location guide pin guider at the in-process of location and direction accurately fix a position, bare-handed operation error is bigger, and it is unfavorable to doctors and patients ' health to wear the needle perspective repeatedly, and current guider can't remove at will and fix on the operating table to and can't fix the problem of the guide pin of different diameters well, including the automobile body, the automobile body upper end is equipped with the gear box that can slide around the automobile body up end, is equipped with rotatable driving gear in the gear box, and the left of driving gear evenly is equipped with first gear, second gear and third gear, and the meshing has the connecting gear that can slide from top to bottom between first gear and the driving gear, and the rotatable gearshift of connecting gear top fixedly connected forms the connecting gear respectively with first gear, second gear, third gear, And the second gear and the third gear are meshed.)

1. The orthopedic positioning guide pin guiding device comprises a vehicle body (2), and is characterized in that a gear box (7) capable of sliding back and forth on the upper end surface of the vehicle body (2) is arranged at the upper end of the vehicle body (2), a rotatable driving gear (28) is arranged in the gear box (7), a first gear (24), a second gear (23) and a third gear (27) are uniformly arranged on the left side of the driving gear (28), a connecting gear (25) capable of sliding up and down is meshed between the first gear (24) and the driving gear (28), a rotatable gear shifting mechanism (16) is rotatably connected above the connecting gear (25), and the gear shifting mechanism (16) rotates to form a structure that the connecting gear (25) is respectively meshed with the first gear (24), the second gear (23) and the third gear (27);

a transmission box (17) capable of moving up and down is arranged above the first gear (24), a transmission mechanism is arranged in the transmission box (17), a first threaded rod (15) is fixedly connected to the right side of the transmission mechanism, a sliding block (21) capable of sliding left and right is in threaded connection with the first threaded rod (15), the first gear (24) rotates to form a structure that the sliding block (21) slides left and right, and a rotatable clamping mechanism is arranged behind the sliding block (21);

the second gear (23) is fixedly connected with a threaded pipe (37), a second threaded rod (19) capable of moving up and down in the threaded pipe (37) is arranged in the threaded pipe (37), the upper end of the second threaded rod (19) is fixedly connected with the transmission case (17), and the second gear (23) rotates to form a structure that the transmission case (17) moves up and down;

the third gear (27) is coaxially and fixedly connected with a fourth bevel gear (40), a third bevel gear (39) is meshed below the fourth bevel gear (40), a fourth gear (38) is coaxially and fixedly connected to the right side of the third bevel gear (39), the fourth gear (38) is rotatably connected to the inner wall of the gear box (7), a first rack (9) is arranged on the upper end face of the vehicle body (2), the first rack (9) is meshed with the fourth gear (38), and the third gear (27) rotates to form a structure for the front and back movement of the gear box (7).

2. The orthopedic positioning and guide pin guiding device according to claim 1, characterized in that a handle (11) is connected to the rear end face of the gear box (7) in a penetrating manner, a first worm (31) is fixedly connected to the front end of the handle (11), a first worm wheel (30) is engaged on the left side of the first worm (31), the first worm wheel (30) and the driving gear (28) are coaxially and fixedly connected, a dial (13) is fixedly connected to the rear end face of the gear box (7), a rubber pointer (12) is arranged behind the dial (13), and the handle (11) is connected to the rubber pointer (12) in a penetrating manner.

3. The orthopedic positioning and guide pin guiding device according to claim 1, characterized in that the transmission mechanism comprises a first belt wheel (32), a first belt (33) is arranged on the outer edge of the first belt wheel (32), the first belt (33) is connected with a second belt wheel (36), the second belt wheel (36) is coaxially and fixedly connected with a first bevel gear (34), a second bevel gear (35) is engaged on the right side of the first bevel gear (34), the right side of the second bevel gear (35) is fixedly connected to the left end of the first threaded rod (15), a guide rod (18) is fixedly connected to the right end of the transmission case (17), and a diamond-shaped telescopic rod (14) is fixedly connected between the first belt wheel (32) and the first gear (24).

4. The orthopedic positioning and guide needle guiding device according to claim 1, wherein a fifth gear (42) is rotatably connected to the rear wall surface of the gear box (7), a second rack (41) capable of sliding up and down on the rear wall surface is engaged on the left side of the fifth gear (42), a push plate (43) is fixedly connected to the left side of the second rack (41), a third rack (45) is engaged on the right side of the fifth gear (42), a clamping block (29) is fixedly connected to the lower side of the third rack (45), a second spring (44) is arranged at the front end of the clamping block (29), the upper end of the second spring (44) is fixedly connected to the rear wall surface of the gear box (7), and the lower end of the second spring (44) is fixedly connected to the front end of the clamping block (29).

5. The orthopedic positioning and guide needle guiding device according to claim 1, characterized in that the shifting structure comprises a sixth gear (47), a push rod (46) is fixedly connected in front of the sixth gear (47), a coil spring (48) is fixedly connected coaxially with the sixth gear (47), the outer end of the other end of the coil spring (48) is fixedly connected to the rear side surface inside the gear shifting box, a fourth rack (49) is meshed on the left side of the sixth gear (47), a connecting column (26) is fixedly connected below the fourth rack (49), and the lower part of the connecting column (26) is rotatably connected to the connecting gear (25).

6. The orthopedic positioning and guide pin guiding device according to claim 1, characterized in that a drawer (8) capable of being pushed and pulled back and forth is arranged inside the gear box (7), a rotatable second roller (54) is arranged at the rear side inside the drawer (8), a second belt (52) is arranged at the outer edge of the second roller (54), a first roller (51) is sleeved on the front side of the second belt (52), a plurality of elastic clamping pieces (53) are uniformly arranged on the second belt (52), a second worm wheel (56) is fixedly connected to the right side of the second roller (54), a second worm (57) is meshed below the second worm wheel (56), and a motor (58) is fixedly connected to the rear end of the second worm (57).

7. The orthopedic positioning guide pin guiding device according to claim 1, characterized in that an arc-shaped plate (20) is fixedly connected below the slider (21), a rotatable rotating body (68) is arranged behind the arc-shaped plate (20), a rotatable clamping screw (67) is arranged in the rotating body (68), an arc-shaped groove (55) is arranged at the lower portion of the arc-shaped plate (20), a nut (66) capable of sliding in the arc-shaped groove (55) is arranged in the arc-shaped groove (55), the nut (66) is in threaded connection with the clamping screw (67), a third worm wheel (60) is rotatably connected to the inner surface of the right side of the rotating body (68), a fifth bevel gear (59) is coaxially and fixedly connected to the left side of the third worm wheel (60), and a third worm (61) is meshed below the third worm wheel (.

8. The orthopedic positioning and guide pin guiding device according to claim 1, wherein the clamping mechanism comprises a fixed tube (22), a sixth bevel gear (62) is rotatably connected to the upper end of the fixed tube (22), a plurality of first connecting rods (63) capable of swinging left and right are uniformly hinged to the inner wall of the sixth bevel gear (62), a telescopic column (64) is correspondingly arranged below each first connecting rod (63) in a one-to-one manner, the outer end of each telescopic column (64) is fixedly connected to the inner wall of the fixed tube (22), the inner side of each first connecting rod (63) is hinged to the inner side of each telescopic column (64), and a clamping plate (65) is fixedly connected to the inner side of each telescopic column (64) to form a structure that the sixth bevel gear (62) rotates to drive the clamping plate (65) to approach the center of a circle at the same time.

9. The orthopedic positioning and guide needle guiding device according to claim 1, characterized in that a fourth worm (73) is rotatably connected to the vehicle body (2), a fourth worm wheel (72) is engaged above the fourth worm (73), and a rotating shaft (71) is fixedly connected to the center of the fourth worm wheel (72); two symmetrical second connecting rods (69) are hinged to the front side face and the rear side face of the upper end of the car body (2), a clamping rod (10) is hinged to the lower portion of each second connecting rod (69), a third connecting rod (70) is hinged to the left side of each clamping rod (10), and the third connecting rods (70) are fixedly connected to the two ends of the rotating shaft (71).

10. The orthopedic positioning guide pin guiding device according to claim 1, characterized in that two front wheels (74) which are bilaterally symmetrical and coaxially fixedly connected are arranged at the front end inside the vehicle body (2), a seventh gear (75) which can rotate along with the front wheels (74) is fixedly connected between the two front wheels (74), a supporting frame (78) is arranged behind the seventh gear (75), the supporting frame (78) is fixedly connected to the inner wall of the vehicle body (2), a pushing block (77) which can slide back and forth in the supporting frame (78) is arranged in the supporting frame (78), a toothed block (76) is fixedly connected to the front end of the pushing block (77), two handlebars (4) which are bilaterally symmetrical are arranged on the rear wall of the vehicle body (2), a rotatable arc-shaped rod (3) is arranged below the left handlebar (4), a first spring (5) is fixedly connected between the arc-shaped rod (3) and the left handlebar (4), a connecting shaft (82) is fixedly, connecting axle (82) middle part fixedly connected with fifth connecting rod (80), fifth connecting rod (80) below articulates there is sixth connecting rod (81), and sixth connecting rod (81) left side articulates there is fourth connecting rod (79), and fourth connecting rod (79) front end articulates in ejector pad (77), and automobile body (2) rear end articulates there are two bilateral symmetry's articulated piece (6), and the outside of every articulated piece (6) all rotates and is connected with rear wheel (1).

Technical Field

The invention relates to the technical field of orthopedic medical instruments, in particular to an orthopedic positioning guide pin guiding device.

Background

As is known, the hollow screw is widely applied to the fixation of fractures of other parts such as ankle joint fracture and the like, the guide pin has the functions of positioning and guiding and is matched with the hollow screw for the fixation, the positioning guide pin is placed under the guidance of a C-arm X-ray machine by hands of a doctor, the accuracy, the safety and the effectiveness are low, an ideal biomechanical configuration is difficult to obtain in a narrow geometric space, the normal bone structure is further damaged by repeatedly puncturing the needle, unnecessary iatrogenic damage is caused, the operation is completed by visual observation, C-arm perspective or manual adjustment and the like, the defects that the subjectivity is strong, the error is large, multiple puncturing is often required in each operation, unnecessary damage is easily caused to the puncturing part, the repeated puncturing can prolong the operation time, multiple fluoroscopy is required in the operation process, and excessive radioactive ray exposure is unfavorable to the health of both sides of the patient, particularly, a doctor needs to frequently perform operation, the health is seriously influenced, the fatigue of the doctor is increased, the operation is restricted, the traditional guide device cannot be randomly moved and fixed on an operating table, the burden of medical staff is increased, the guide pins are various in types and different in diameter, and the guide pins with different diameters cannot be well fixed by the traditional guide device.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the invention provides an orthopedic positioning guide pin guiding device, which effectively solves the problems that the orthopedic positioning guide pin guiding device cannot be accurately positioned in the positioning and guiding processes, the bare-handed operation error is large, repeated needle threading and fluoroscopy are unfavorable to the health of doctors and patients, the existing guiding device cannot be freely moved and fixed on an operating table, and guide pins with different diameters cannot be well fixed through the design.

In order to achieve the purpose, the invention provides the following technical scheme: the invention comprises a vehicle body, wherein the upper end of the vehicle body is provided with a gear box capable of sliding back and forth on the upper end surface of the vehicle body, a rotatable driving gear is arranged in the gear box, the left side of the driving gear is uniformly provided with a first gear, a second gear and a third gear, a connecting gear capable of sliding up and down is meshed between the first gear and the driving gear, a rotatable gear shifting mechanism is rotatably connected above the connecting gear, and the gear shifting mechanism rotates to form a structure that the connecting gear is respectively meshed with the first gear, the second gear and the third gear;

a transmission box capable of moving up and down is arranged above the first gear, a transmission mechanism is arranged in the transmission box, a first threaded rod is fixedly connected to the right side of the transmission mechanism, the first threaded rod is in threaded connection with a slide block capable of sliding left and right, the first gear rotates to form a structure that the slide block slides left and right, and a rotatable clamping mechanism is arranged behind the slide block;

the second gear is fixedly connected with a threaded pipe, a second threaded rod capable of moving up and down in the threaded pipe is arranged in the threaded pipe, the upper end of the second threaded rod is fixedly connected with the transmission case, and the second gear rotates to form a structure that the transmission case moves up and down;

the third gear is coaxially and fixedly connected with a fourth bevel gear, the third bevel gear is meshed below the fourth bevel gear, the fourth gear is coaxially and fixedly connected to the right side of the third bevel gear, the fourth gear is rotatably connected to the inner wall of the gear box, a first rack is arranged on the upper end face of the vehicle body, the first rack and the fourth gear are mutually meshed, and the third gear rotates to form a structure for the gear box to move back and forth.

Preferably, the rear end face of the gear box is connected with a handle in a penetrating mode, the front end of the handle is fixedly connected with a first worm, the left side of the first worm is meshed with a first worm wheel, the first worm wheel is coaxially and fixedly connected with the driving gear, the rear end face of the gear box is fixedly connected with a dial, a rubber pointer is arranged behind the dial, and the handle is connected with the rubber pointer in a penetrating mode.

Preferably, the transmission mechanism comprises a first belt wheel, a first belt is arranged on the outer edge of the first belt wheel, the first belt is connected with a second belt wheel, a first bevel gear is fixedly connected with the second belt wheel coaxially, a second bevel gear is meshed with the right side of the first bevel gear, the right side of the second bevel gear is fixedly connected to the left end of the first threaded rod, a guide rod is fixedly connected to the right end of the transmission case, and a rhombic telescopic rod is fixedly connected between the first belt wheel and the first gear.

Preferably, the rear wall surface of the gear box is rotatably connected with a fifth gear, a second rack capable of sliding up and down on the rear wall surface is meshed on the left side of the fifth gear, a push plate is fixedly connected to the left side of the second rack, a third rack is meshed on the right side of the fifth gear, a clamping block is fixedly connected to the lower portion of the third rack, a second spring is arranged at the front end of the clamping block, the upper end of the second spring is fixedly connected to the rear wall surface of the gear box, and the lower end of the second spring is fixedly connected to the front end of the clamping.

Preferably, the gear shifting structure comprises a sixth gear, a push rod is fixedly connected in front of the sixth gear, the sixth gear is fixedly connected with a coil spring coaxially, the outer end of the other end of the coil spring is fixedly connected to the rear side face inside the gear shifting box, a fourth rack is meshed on the left side of the sixth gear, a connecting column is fixedly connected to the lower portion of the fourth rack, and the lower portion of the connecting column is rotatably connected to the connecting gear.

Preferably, the inside drawer that can push-and-pull from beginning to end that is equipped with of gear box, the inside rear side of drawer is equipped with rotatable second gyro wheel, and second gyro wheel outer fringe is equipped with the second belt, and second belt front side cover has been connected with first gyro wheel, evenly is equipped with a plurality of elastic clamping pieces on the second belt, second gyro wheel right side fixedly connected with second worm wheel, and the meshing has the second worm below the second worm wheel, and second worm rear end fixedly connected with motor.

Preferably, the slider below fixedly connected with arc, the arc rear is equipped with rotatable rotator, is equipped with rotatable clamping screw in the rotator, and the arc lower part is equipped with the arc wall, is equipped with the nut that can slide in the arc wall, nut and clamping screw threaded connection, and rotator right side internal surface rotates and is connected with the third worm wheel, the coaxial fixedly connected with fifth bevel gear in third worm wheel left side, and the meshing has the third worm below the third worm wheel.

Preferably, clamping mechanism is including fixed pipe, and fixed pipe upper end is rotated and is connected with sixth bevel gear, and the even articulated first connecting rod that has a plurality of horizontal hunting that have of sixth bevel gear inner wall, and every first connecting rod below one-to-one has a flexible post, flexible post outer end fixed connection in fixed pipe inner wall, and the inboard of every first connecting rod all articulates in the inboard of flexible post, and every flexible post inboard all fixedly connected with pinch-off blades, forms the structure that sixth bevel gear rotated to drive the pinch-off blades and be close to the centre of a circle simultaneously.

Preferably, a fourth worm is rotationally connected in the vehicle body, a fourth worm wheel is meshed above the fourth worm, and a rotating shaft is fixedly connected in the center of the fourth worm wheel; two symmetrical second connecting rods are hinged to the front side face and the rear side face of the upper end of the trolley body, a clamping rod is hinged to the lower portion of each second connecting rod, a third connecting rod is hinged to the left side of each clamping rod, and the third connecting rods are fixedly connected to the two ends of the rotating shaft.

Preferably, the front end of the inside of the vehicle body is provided with two front wheels which are bilaterally symmetrical and coaxially fixedly connected, a seventh gear which can rotate along with the front wheels is fixedly connected between the two front wheels, a support frame is arranged behind the seventh gear, the support frame is fixedly connected to the inner wall of the vehicle body, a push block which can slide in the support frame back and forth is arranged in the support frame, a toothed block is fixedly connected to the front end of the push block, the rear wall surface of the vehicle body is provided with two handlebars which are bilaterally symmetrical, a rotatable arc-shaped rod is arranged below the left handlebar, a first spring is fixedly connected between the arc-shaped rod and the left handlebar, a connecting shaft is fixedly connected to the right end of the arc-shaped rod, a fifth connecting rod is fixedly connected to the middle of the connecting shaft, a sixth connecting rod is hinged to the lower part of the fifth connecting rod, a fourth connecting rod is hinged to.

The invention has novel structure, ingenious conception and simple and convenient operation, and compared with the prior art, the invention has the following advantages:

1. the existing orthopedic positioning guide pin is positioned and guided by a doctor by bare hands in the using process, the error is large and the burden of the doctor is increased, the slide block can be driven by the device through the rotation of the control handle to drive the fixing mechanism to be quickly positioned, the operation is simple and convenient, the bone fracture part needing fixing hollow screws is quickly positioned, and the burden of the doctor is reduced.

2. The operation often needs bare-handed to wear the needle many times, leads to easily that the position of wearing the needle produces unnecessary damage, and it can prolong the operating time to wear the needle repeatedly to need to see through many times among the operation process, too much radioactive ray exposes to doctors and patients' both sides healthy unfavorable, but this device rotates the handle and realizes that fixed establishment can fix a position fast, punctures, has reduced the operating time, and has reduced the injury of radiation to the human body.

3. The existing guide device cannot be moved and fixed on a sickbed at will, the device can be moved to different sickbeds at will, and the device can be fixed beside the sickbed through the clamping rod, so that the stability of the device is further improved.

4. The guide pins with different diameters cannot be fixed well by the existing guide device, the guide pins with different diameters are fixed quickly by rotating the third worm, looseness cannot occur, the working efficiency is improved, and the operation time is shortened.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic view of the internal structure of the gear box of the present invention.

Fig. 3 is a schematic view of the matching structure of the gear shifting mechanism and the connecting gear.

FIG. 4 is a schematic view of the driving gear and slider mating structure of the present invention.

FIG. 5 is a schematic view of the engagement structure of the driving gear and the second threaded rod according to the present invention.

FIG. 6 is a schematic view of a mating structure of a pinion and a first rack according to the present invention.

Fig. 7 is a schematic view of a second rack and latch fitting structure according to the present invention.

FIG. 8 is a schematic view of the shifting mechanism of the present invention.

FIG. 9 is a schematic view of the cross-sectional structure of the connecting gear and the connecting column of the present invention.

FIG. 10 is a schematic view of the overall gearbox configuration of the present invention.

FIG. 11 is a cross-sectional view of a drawer according to the present invention.

FIG. 12 is a schematic view of the motor and the first roller of the present invention.

Fig. 13 is a schematic view of a clamping structure of the present invention.

Fig. 14 is an exploded view of the clamping structure of the present invention.

Fig. 15 is a schematic view of the rotating body and arc plate of the present invention in cooperation.

Figure 16 is a schematic view of the fourth worm of the present invention engaged with a clamping bar.

Fig. 17 is a schematic view of the arc rod and tooth block of the present invention.

Reference numbers in the figures: 1-rear wheel, 2-vehicle body, 3-arc rod, 4-handlebar, 5-first spring, 6-hinged block, 7-gear box, 8-drawer, 9-first rack, 10-clamping rod, 11-handle, 12-rubber pointer, 13-dial, 14-diamond telescopic rod, 15-first threaded rod, 16-gear shifting mechanism, 17-transmission box, 18-guide rod, 19-second threaded rod, 20-arc plate, 21-sliding block, 22-fixed tube, 23-second gear, 24-first gear, 25-connecting gear, 26-connecting column, 27-third gear, 28-driving gear, 29-clamping block, 30-first worm gear, 31-first worm, 32-first belt wheel, 33-first belt, 34-first bevel gear, 35-second bevel gear, 36-second belt wheel, 37-threaded pipe, 38-fourth gear, 39-third bevel gear, 40-fourth bevel gear, 41-second rack, 42-fifth gear, 43-push plate, 44-second spring, 45-third rack, 46-push rod, 47-sixth gear, 48-coil spring, 49-fourth rack, 50-guide rail, 51-first roller, 52-second belt, 53-elastic clamping piece, 54-second roller, 55-arc groove, 56-second worm gear, 57-second worm, 58-motor, 59-fifth bevel gear, 60-third worm gear, 61-third worm gear, 62-sixth bevel gear, 63-first connecting rod, 64-telescopic column, 65-clamping plate, 66-nut, 67-clamping screw, 68-rotating body, 69-second connecting rod, 70-third connecting rod, 71-rotating shaft, 72-fourth worm gear, 73-fourth worm, 74-front wheel, 75-seventh gear, 76-tooth block, 77-push block, 78-supporting frame, 79-fourth connecting rod, 80-fifth connecting rod, 81-sixth connecting rod and 82-connecting shaft.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 17.

The invention comprises a vehicle body 2, wherein the upper end of the vehicle body 2 is provided with a gear box 7 which can slide in front and back of the upper end surface of the vehicle body 2, a rotatable driving gear 28 is arranged in the gear box 7, the left side of the driving gear 28 is uniformly provided with a first gear 24, a second gear 23 and a third gear 27, a connecting gear 25 which can slide up and down is meshed between the first gear 24 and the driving gear 28, a rotatable gear shifting mechanism 16 is rotatably connected above the connecting gear 25, and the gear shifting mechanism 16 rotates to form a structure that the connecting gear 25 is respectively meshed with the first gear 24, the second gear 23 and the third gear 27.

The gear box 7 can horizontally slide back and forth on the upper end face of the vehicle body 2, the space between the first gear 24, the second gear 23 and the third gear 27 is 60 degrees, the connecting gear 25 is meshed with the driving gear 28 and the first gear 24 in an initial state, when a transmission mode needs to be switched, the gear shifting mechanism 16 drives the connecting gear 25 to ascend to get rid of the meshing with the first gear 24, then the gear shifting mechanism 16 rotates anticlockwise, an arc-shaped through hole is formed in the upper end face of the gear box 7, a plurality of guide rails 50 are uniformly and fixedly connected to the inner side of the through hole, the connecting column 26 can only slide up and down in the guide rails 50, when the connecting column 26 is driven to ascend to the upper end face of the vehicle body 2 by the gear shifting mechanism 16, the connecting column 26 is driven to rotate by rotating the gear shifting mechanism 16 after the connecting column 6 is free of the constraint of the guide rails 50, and the gear shifting mechanism 16, and thus it is possible to ensure that the connecting gear 25 meshes with the other two gears one by one.

A transmission box 17 capable of moving up and down is arranged above the first gear 24, a transmission mechanism is arranged in the transmission box 17, a first threaded rod 15 is fixedly connected to the right side of the transmission mechanism, a sliding block 21 capable of sliding left and right is connected to the first threaded rod 15 in a threaded mode, the first gear 24 rotates to form a structure with the sliding block 21 capable of sliding left and right, and a rotatable clamping mechanism is arranged behind the sliding block 21.

The transmission mechanism above the first gear 24 can drive the first threaded rod 15 to rotate along with the rotation of the first gear 24, a threaded groove is formed in the sliding block 21, the sliding block 21 can be driven to move left and right by the rotation of the first threaded rod 15, and a rotatable clamping mechanism is arranged behind the sliding block 21.

The second gear 23 is fixedly connected with a threaded pipe 37, a second threaded rod 19 capable of moving up and down in the threaded pipe 37 is arranged in the threaded pipe 37, the upper end of the second threaded rod 19 is fixedly connected with the transmission case 17, and the second gear 23 rotates to form a structure that the transmission case 17 moves up and down.

The second gear 23 rotates to drive the threaded pipe 37 to rotate, internal threads are arranged in the threaded pipe 37, and the threaded pipe 37 rotates to drive the second threaded rod 19 to move up and down, so that the transmission case 17 is driven to move up and down.

The third gear 27 is coaxially and fixedly connected with a fourth bevel gear 40, a third bevel gear 39 is meshed below the fourth bevel gear 40, a fourth gear 38 is coaxially and fixedly connected to the right side of the third bevel gear 39, the fourth gear 38 is rotatably connected to the inner wall of the gear box 7, a first rack 9 is arranged on the upper end face of the vehicle body 2, the first rack 9 and the fourth gear 38 are meshed with each other, and the third gear 27 rotates to form a structure that the gear box 7 moves back and forth.

The third gear 27 rotates to drive the fourth bevel gear 40 to rotate, the fourth bevel gear 40 drives the engaged third bevel gear 39 to rotate, and further drives the fourth gear 38 to rotate, the first rack 9 and the fourth gear 38 are engaged with each other, and the fourth gear 38 moves back and forth under the action of the first rack 9, so as to drive the gear box 7 to move back and forth on the vehicle body 2.

The rear end face of the gear box 7 is connected with a handle 11 in a penetrating mode, the front end of the handle 11 is fixedly connected with a first worm 31, the left side of the first worm 31 is meshed with a first worm wheel 30, the first worm wheel 30 is fixedly connected with the driving gear 28 in a coaxial mode, the rear end face of the gear box 7 is fixedly connected with a dial 13, a rubber pointer 12 is arranged behind the dial 13, and the handle 11 is connected with the rubber pointer 12 in a penetrating mode.

Rotate handle 11 and drive first worm 31 and rotate, first worm 31 drives the first worm wheel 30 of meshing and rotates, and first worm wheel 30 drives coaxial fixed connection's driving gear 28 and rotates, and rubber pointer 12 returns under the effect of frictional force and rotates along with handle 11 when not receiving external force, and then obtains the distance of removal through comparing calibrated scale 13, after a rotation process, can rotate rubber pointer 12 and return to zero, then carry out the rotation next time.

The transmission mechanism comprises a first belt wheel 32, a first belt 33 is arranged on the outer edge of the first belt wheel 32, the first belt 33 is connected with a second belt wheel 36, the second belt wheel 36 is coaxially and fixedly connected with a first bevel gear 34, a second bevel gear 35 is meshed on the right side of the first bevel gear 34, the right side of the second bevel gear 35 is fixedly connected to the left end of the first threaded rod 15, a guide rod 18 is fixedly connected to the right end of the transmission case 17, and a diamond-shaped telescopic rod 14 is fixedly connected between the first belt wheel 32 and the first gear 24.

First band pulley 32 rotates and drives second band pulley 36 through first belt 33 and rotate, and then drive the first bevel gear 34 of below and rotate, first bevel gear 34 drives the second bevel gear 35 of meshing and rotates, just can drive first threaded rod 15 and rotate, can guarantee under the effect of guide arm 18 that first threaded rod 15 rotates and drives slider 21 and remove about, the below fixedly connected with diamond-shaped telescopic rod 14 of first band pulley 32, diamond-shaped telescopic rod 14 rotates and connects in transmission case 17, can not influence the rotation of diamond-shaped telescopic rod 14 like this at the in-process that transmission case 17 ascended and descends.

The rear wall surface of the gear box 7 is rotatably connected with a fifth gear 42, the left side of the fifth gear 42 is meshed with a second rack 41 capable of sliding up and down on the rear wall surface, the left side of the second rack 41 is fixedly connected with a push plate 43, the right side of the fifth gear 42 is meshed with a third rack 45, a clamping block 29 is fixedly connected below the third rack 45, the front end of the clamping block 29 is provided with a second spring 44, the upper end of the second spring 44 is fixedly connected to the rear wall surface of the gear box 7, the lower end of the second spring 44 is fixedly connected to the front end of the clamping block 29, a protrusion at the front end of the clamping block 29 is matched with a groove in the rear wall of the gear box, and the clamping block.

Promote push pedal 43 and drive second rack 41 and descend, and then drive fifth gear 42 anticlockwise rotation, and then drive the third rack 45 of meshing and rise, and third rack 45 drives fixture block 29 and rises to break away from the meshing to first rack 9, under the effect of second spring 44, when push pedal 43 no longer pushes down, just can realize fixture block 29's automatic decline, the first rack 9 of quick chucking.

The gear shifting structure comprises a sixth gear 47, a push rod 46 is fixedly connected in front of the sixth gear 47, a coil spring 48 is fixedly connected with the sixth gear 47 in a coaxial mode, the outer end of the other end of the coil spring 48 is fixedly connected to the rear side face of the interior of the gear shifting box, a fourth rack 49 is meshed on the left side of the sixth gear 47, a connecting column 26 is fixedly connected to the lower portion of the fourth rack 49, and the lower portion of the connecting column 26 is rotatably connected to the connecting gear 25.

The fingers extend into the circular ring of the push rod 46, the push rod 46 is pulled rightwards, the push rod 46 drives the fourth rack 49 to ascend, the fourth rack 49 drives the connecting column 26 to ascend, the connecting column 26 drives the connecting gear 25 to ascend, the connecting column 26 is matched with the connecting gear 25 as shown in fig. 8, the connecting column 26 can drive the connecting gear 25 to ascend and descend, and the rotation of the connecting gear 25 is not affected.

The drawer 8 capable of being pushed and pulled back and forth is arranged inside the gear box 7, the rotatable second idler wheel 54 is arranged on the rear side inside the drawer 8, the second belt 52 is arranged on the outer edge of the second idler wheel 54, the first idler wheel 51 is connected to the front side of the second belt 52 in a sleeved mode, a plurality of elastic clamping pieces 53 are evenly arranged on the second belt 52, the second worm wheel 56 is fixedly connected to the right side of the second idler wheel 54, the second worm 57 is meshed below the second worm wheel 56, and the motor 58 is fixedly connected to the rear end of the second worm 57.

The inside drawer 8 that can push and pull back that is equipped with of gear box 7, evenly be equipped with a plurality of elastic clamping pieces 53 on the second belt 52, can be used for pressing from both sides tight different location guide pins, motor 58 rotates and drives second worm 57 and rotate, second worm 57 drives the second worm wheel 56 of meshing and rotates, and then drives first gyro wheel 51 and rotates, and then drives second gyro wheel 54 through second belt 52 and rotates, rotate the guide pin to the up end through the rotation of second belt 52 when the guide pin that needs the difference, conveniently take and deposit.

The lower portion of the sliding block 21 is fixedly connected with an arc-shaped plate 20, a rotatable rotating body 68 is arranged behind the arc-shaped plate 20, a rotatable clamping screw 67 is arranged in the rotating body 68, an arc-shaped groove 55 is arranged at the lower portion of the arc-shaped plate 20, a nut 66 capable of sliding in the arc-shaped groove 55 is arranged in the arc-shaped groove 55, the nut 66 is in threaded connection with the clamping screw 67, a third worm wheel 60 is rotatably connected to the inner surface of the right side of the rotating body 68, a fifth bevel gear 59 is coaxially and fixedly connected to the left side of the third worm wheel 60, and a.

In an initial state, the fastening screw and the nut 66 are connected together through thread fastening, when the angle of the rotating body 68 needs to be adjusted, the clamping screw 67 is rotated, so that the rotating body 68 and the arc plate 20 are not connected tightly, the nut 66 slides in the arc groove 55 and drives the rotating body 68 to a required angle, then the clamping screw 67 is screwed, the rotating body 68 does not rotate any more, the third worm wheel 60 is connected to the right side of the rotating body 68 in a rotating mode, the third worm 61 is meshed below the third worm wheel 60, and the third worm 61 drives the third worm wheel 60 to rotate so as to drive the fifth bevel gear 59 to rotate.

Clamping mechanism includes fixed pipe 22, fixed pipe 22 upper end is rotated and is connected with sixth bevel gear 62, the even articulated first connecting rod 63 that has a plurality of horizontal hunting that has of sixth bevel gear 62 inner wall, every first connecting rod 63 below one-to-one has a flexible post 64, flexible post 64 outer end fixed connection is in fixed pipe 22 inner wall, the inboard of every first connecting rod 63 all articulates in the inboard of flexible post 64, every flexible post 64 inboard all fixedly connected with clamp plate 65, form the structure that sixth bevel gear 62 rotates and drives clamp plate 65 and be close to the centre of a circle simultaneously.

Sixth bevel gear 62 rotates anticlockwise at fixed pipe 22 upper end and drives articulated first connecting rod 63 and rotate, and first connecting rod 63 is articulated with the front end of flexible post 64, and flexible post 64 outer end fixed connection is in fixed pipe 22 inner wall, and first connecting rod 63 can be to the direction motion that is close to the centre of a circle in the rotation process, drives articulated flexible post 64 and stretches out to the centre of a circle direction, and then drives three arc 20 and remove to the centre of a circle direction simultaneously, realizes pressing from both sides tightly the location guide pin.

A fourth worm 73 is rotatably connected in the vehicle body 2, a fourth worm wheel 72 is meshed above the fourth worm 73, and a rotating shaft 71 is fixedly connected in the center of the fourth worm wheel 72; two second connecting rods 69 which are symmetrical front and back are hinged to the front side face and the back side face of the upper end of the car body 2, a clamping rod 10 is hinged to the lower portion of each second connecting rod 69, a third connecting rod 70 is hinged to the left side of each clamping rod 10, and the third connecting rods 70 are fixedly connected to two ends of a rotating shaft 71.

The fourth worm 73 is rotated to drive the meshed fourth worm gear 72 to rotate, so as to drive the fixedly connected rotating shaft 71 to rotate, the rotating shaft 71 drives the third connecting rods 70 at two ends to rotate, and each third connecting rod 70 can ensure that the third connecting rod 70 drives the clamping rod 10 to horizontally move towards the upper right under the action of the second connecting rod 69, so that the bed board of the hospital bed can be clamped.

The front end of the inside of the vehicle body 2 is provided with two front wheels 74 which are bilaterally symmetrical and coaxially fixedly connected, a seventh gear 75 which can rotate along with the front wheels 74 is fixedly connected between the two front wheels 74, a support frame 78 is arranged behind the seventh gear 75, the support frame 78 is fixedly connected to the inner wall of the vehicle body 2, a push block 77 which can slide back and forth in the support frame 78 is arranged in the support frame 78, a tooth-shaped block 76 is fixedly connected to the front end of the push block 77, the rear wall surface of the vehicle body 2 is provided with two handlebars 4 which are bilaterally symmetrical, a rotatable arc-shaped rod 3 is arranged below the left handlebar 4, a first spring 5 is fixedly connected between the arc-shaped rod 3 and the left handlebar 4, a connecting shaft 82 is fixedly connected to the right end of the arc-shaped rod 3, a fifth connecting rod 80 is fixedly connected to the middle part of the connecting shaft 82, a sixth, the rear end of the vehicle body 2 is hinged with two hinge blocks 6 which are symmetrical left and right, and the outer side of each hinge block 6 is rotatably connected with a rear wheel 1.

The front end of the vehicle body 2 is provided with two front wheels 74 which are coaxially and fixedly connected, a seventh gear 75 which can rotate along with the front wheels 74 is fixedly connected between the two front wheels 74, the arc-shaped rod 3 is rotated to drive the connecting shaft 82 to rotate, the connecting shaft 82 drives the fifth connecting rod 80 to turn upwards and further drives the sixth connecting rod 81 to move upwards, the sixth connecting rod 81 drives the hinged fourth connecting rod 79 to move upwards and further drives the push block 77 to horizontally move backwards in the supporting frame 78 to drive the tooth-shaped block 76 to move backwards, and the engagement between the tooth-shaped block 76 and the seventh gear 75 is released, so that the two front wheels 74 can rotate, because the first spring 5 is fixedly connected between the arc-shaped rod 3 and the left handlebar 4, under the elastic force of the first spring 5, under the condition that the arc-shaped rod 3 is not subjected to external force any more, the tooth-shaped block 76 and the seventh gear 75 are always engaged to play a role in stopping the rotation of the front wheels 74, and the rear end of the vehicle, the outside articulated piece 6 can only rotate about in the horizontal direction, and the outside of every articulated piece 6 all rotates and is connected with rear wheel 1, can realize that rear wheel 1 can control the direction when rotating.

When the invention is used, a medical worker holds the handle bars 4 with two hands, pinches the arc-shaped rod 3 upwards with the left hand, drives the fifth connecting rod 80 to turn upwards, further drives the sixth connecting rod 81 to move upwards, the sixth connecting rod 81 drives the hinged fourth connecting rod 79 to move upwards, further drives the push block 77 to move horizontally backwards in the supporting frame 78, drives the tooth-shaped block 76 to move backwards, and removes the engagement between the tooth-shaped block 76 and the seventh gear 75, thereby enabling the two front wheels 74 to rotate, the rear end of the vehicle body 2 is fixedly connected with the two hinge blocks 6 which are symmetrical left and right, the outer side of each hinge block 6 is rotatably connected with the rear wheel 1, the rotation of the rear wheel 1 can be realized, the direction can be adjusted, the device can be moved to a required position, the two hands are loosened, because the first spring 5 is fixedly connected between the arc-shaped rod 3 and the left handle bar 4, under the elastic force of the spring, under the condition that the arc, the tooth-shaped block 76 and the seventh gear 75 are engaged all the time to stop the rotation of the front wheel 74, the fourth worm 73 is rotated to drive the fourth worm wheel 72 to rotate, and further drive the rotation shaft 71 to rotate, the rotation shaft 71 drives the third connecting rods 70 at two ends to rotate, under the action of the second connecting rod 69, the third connecting rod 70 can ensure that the clamping rod 10 is driven by the third connecting rod 70 to move horizontally to the upper right, so as to clamp the sickbed, further auxiliary fixation of the device is realized, then the handle 11 is rotated to drive the first worm wheel 30 to rotate, and further drive the first worm wheel 30 to rotate, and drive the driving gear 28 fixedly connected below to rotate, the first gear 24 is driven to rotate by the connecting gear 25, the transmission mechanism above the first gear 24 can drive the first threaded rod 15 to rotate along with the rotation of the first gear 24, a threaded groove is arranged in the slider 21, and the rotation of the first threaded rod 15 can drive the slider 21, the distance of the sliding block 21 moving in the left and right directions can be indirectly observed by observing the angle of the rubber pointer 12 rotating on the dial 13, after the sliding block 21 reaches a preset position, a finger is inserted into the circular ring of the push rod 46, the push rod 46 is pulled rightwards, the push rod 46 drives the fourth rack 49 to ascend, the fourth rack 49 drives the connecting column 26 to ascend, the connecting column 26 drives the connecting gear 25 to ascend, after the sliding block rotates 60 degrees forwards, the connecting gear 25 moves downwards under the action of the coil spring 48 by loosening the hand and is meshed with the driving gear 28 and the second gear 23, the handle 11 is rotated to realize the ascending and descending of the transmission case 17 and further drive the sliding block 21 to ascend and descend, then the connecting gear 25 is moved to the position between the driving gear 28 and the third gear 27 by the gear shifting mechanism 16, the handle 11 is rotated to realize the whole gear case 7 moving forwards and backwards on the vehicle body 2, and backwards and forwards of the gear case, under the action of the second spring 44, the fixture block is kept to have a downward force all the time, so that the first rack is clamped, and the gear box is prevented from moving back and forth, after the spatial positioning of the slider 21 is completed, the clamping screw 67 is rotated, so that the rotating body 68 and the arc-shaped plates 20 are not tightly connected any more, the rotating body 68 is rotated to a required angle, and then the clamping screw 67 is rotated, so that the rotating body 68 does not rotate any more, after the fine adjustment of the angle is completed, the third worm 61 is rotated to drive the third worm wheel 60 to rotate, and further the fifth bevel gear 59 is driven to rotate, the fifth bevel gear 59 drives the meshed sixth bevel gear 62 to rotate, and further drives the hinged first connecting rod 63 to rotate, and the first connecting rod 63 drives the hinged telescopic column 64 to extend out in the direction of the circle center, and further drives the three arc-shaped plates 20 to move.

The orthopedic positioning guide pin guiding device is novel in structure, ingenious in conception and simple and convenient to operate, and effectively solves the problems that the orthopedic positioning guide pin guiding device cannot be accurately positioned in the positioning and guiding processes, the operating error of free hands is large, repeated needle threading and perspective are unfavorable to the health of doctors and patients, the existing guiding device cannot be freely moved and fixed on an operating table, guide pins with different diameters cannot be well fixed, the burden of medical staff is reduced, and the efficiency is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.