阅读说明：本技术 复位机器人连接固定装置 (Reset robot connecting and fixing device ) 是由 王炳强 康伟伟 孙之建 于 2021-01-19 设计创作，主要内容包括：本发明涉及一种复位机器人连接固定装置,其解决了现有骨科手术复位机器人中的腿部支撑装置使用繁琐,稳定性差,灵活性差的技术问题,其包括连接基板、活动连接板、锁定器一,活动连接板与连接基板连接,锁定器一用于锁定活动连接板。本发明广泛用于骨科手术。(The invention relates to a reset robot connecting and fixing device, which solves the technical problems of complicated use, poor stability and poor flexibility of a leg supporting device in the existing reset robot for orthopedic surgery. The invention is widely used for orthopedic surgery.)

1. A reset robot connecting and fixing device is characterized by comprising a connecting base plate (1), a movable connecting plate (2) and a first locker (3);

the connecting substrate 1 is provided with a positioning hole (110), a mounting hole (106), a mounting hole (107), a mounting hole (108) and a mounting hole (109), the positioning hole 110 is connected with a fixing pin (101), and the mounting hole (106), the mounting hole (107), the mounting hole (108) and the mounting hole (109) are respectively provided with a screw (102), a screw (103), a screw (104) and a screw (105);

the top surface of the connecting substrate (1) is provided with two V-shaped grooves (111) and two V-shaped grooves (112) which are vertical to each other; the connection substrate 1 is provided with a rear first connection surface (120) and a second connection surface (121), and the second connection surface (121) is positioned at the periphery of the first connection surface (120);

a hole (201), a hole (202), a first connecting surface (205), a second connecting surface (206), a groove (207), a threaded hole (208), a threaded hole (209), a mounting hole (210), a mounting hole (211) and a threaded hole (212) are formed in the body of the movable connecting plate (2); when the movable connecting plate (2) is connected to the connecting substrate (1), the first connecting face (120) and the second connecting face (206) are in contact, and the second connecting face (121) and the first connecting face (205) are in contact;

the first locker (3) comprises a fixing block (301), a locking block (302), a locking rod (303), a locking handle (304) and a fixing pin (305), wherein the fixing block (301) is provided with a threaded hole (307), a threaded hole (309) and a threaded hole (310), the locking block (302) is provided with a hole (308) and a pin hole (311), and the fixing pin (305) is inserted into the pin hole (311); wherein the fixed block (301) is fixed in the groove (207) of the movable connecting plate 2 through a threaded hole (309) and a threaded hole (310) by using a screw (203) and a screw (204) which pass through a hole (201) and a hole (202), and the locking handle (304) is connected with the locking rod (303); the locking rod (303) is provided with a thread which can be screwed into a threaded hole (307) of the fixed block (301), the tail end of the locking rod (303) can be inserted into a hole (308) of the locking block (302), and the hole (308) is communicated with the pin hole (311); after the locking rod (303) is inserted into the hole (308), the lower end of the fixing pin (305) is clamped at the groove (312) of the locking rod (303); when the locking handle (304) is rotated, the inclined surface (306) of the locking block (302) is contacted with the inclined surface (130) of the connection substrate (1).

2. The reduction robot connection fixture according to claim 1, characterized in that the reduction robot connection fixture further comprises an auxiliary locker (4), the auxiliary locker (4) comprises a movable pin (401), an auxiliary locking handle (402), a spring (405), a screw (406), a screw (407), the movable pin (401) comprises a housing (413), a pin rod (404) and two tap levers (403), the pin rod (404) passes through the housing (413), the two tap levers (403) are connected with the rear end of the pin rod (404), the housing (413) is provided with external threads (413-1), the spring fixing seat (412) is fixed in the threaded hole (208) of the movable connecting plate (2), the screw (406) passes through the hole (409) on the auxiliary locking handle (402) and is screwed into the threaded hole (213) of the movable connecting plate (2), the auxiliary locking handle (402) can rotate around a screw (406); the spring (405) is pressed on the spring fixing seat (412) by screwing the screw (407) into a threaded hole (410) on the auxiliary locking handle (402); the spring fixing seat 412 is fixed in a threaded hole (209) on the movable connecting plate (2) through a threaded structure; the slot (411) on the secondary locking handle (402) is located between the two tap levers (403).

3. The reduction robot connection fixture of claim 2, further comprising a reference frame, the reference frame being connected to the articulating plate.

4. The reset robot connecting and fixing device according to claim 3, wherein the reference frame comprises a support rod (501), a ball frame (502) and a marker ball (503), the ball frame (502) is fixedly connected with the upper end of the support rod (501), the marker ball (503) is connected with the ball frame (502), and the lower end of the support rod (501) is fixedly connected with the movable connecting plate (2).

5. The reset robot connecting and fixing device according to claim 4, characterized in that the supporting rod (501) is connected with a first positioning shaft (511) and a second positioning shaft (512), the first positioning shaft (511) and the second positioning shaft (512) are respectively inserted into the hole (210) and the hole (211) of the movable connecting plate (2), the first positioning shaft (511) is provided with a V-shaped groove (513), the supporting rod locking screw (505) is provided with a V-shaped head, the supporting rod locking screw (505) is screwed in from the threaded hole (212) of the movable connecting plate (2), and the V-shaped head of the supporting rod locking screw (505) is clamped into the V-shaped groove (513) of the first positioning shaft (511);

the upper end of bracing piece (501) is equipped with mounting hole (514), mounting hole (515), screw hole (516), ball frame 502 is connected with location axle three (521), location axle four (522) are equipped with V type groove, insert mounting hole (514), mounting hole (515) respectively in location axle three (521), location axle four (522), screw in screw hole (516) with ball frame locking screw 504, ball frame locking screw (504) are equipped with V type head, and the V type groove of location axle four (522) is blocked into to the V type head of ball frame locking screw (504).

Technical Field

The invention relates to the technical field of reduction robots for orthopedic operations, in particular to a reduction robot connecting and fixing device.

Background

In the technical field of orthopedics, in the operation process of leg bone fracture reduction, a magnetic navigation system can be utilized to carry out three-dimensional reconstruction on a CT or MRI two-dimensional image of a leg bone, a three-dimensional model of the leg bone is established, the leg bone is positioned by utilizing a probe and a six-degree-of-freedom reference tool, the association between the leg bone and the three-dimensional model is completed, when the leg bone moves, the three-dimensional model also moves relatively, and the reduction condition of the leg bone can be embodied by observing the reduction condition of the three-dimensional model of the leg bone, so that the reduction of the leg bone fracture is completed.

Magnetic navigation system can significantly reduce complicated bone surgery's risk, bone surgery utilizes navigation system to formulate operation plan and intraoperative navigation before the art, can track the surgical instruments in the operation process to with the image of surgical instruments position before the patient or in the art update in real time and show, let the operation doctor know the relation of surgical instruments's position and sick anatomical structure at any time, obtain the navigation help again simultaneously, so make the process of operation more accurate.

Referring to the invention patent No. 201310700436.7, a magnetic navigation system is disclosed.

Referring to the patent application with patent number 201711112547.0, an orthopedic positioning robot base for magnetic navigation systems is disclosed.

Refer to patent application No. 201910468654.X, which discloses a fixing support for assisting fracture reduction based on electromagnetic navigation technology.

Reference is made to patent application No. 201711112548 entitled navigation reference. Reference is made to patent application No. 201711113196.5 entitled orthopaedic robot.

Leg support device among current bone surgery robot that resets has loaded down with trivial details, poor stability, the poor technical problem of flexibility.

Disclosure of Invention

The invention provides a reset robot connecting and fixing device, aiming at solving the technical problems of complicated use, poor stability and poor flexibility of a leg supporting device in the existing reset robot for orthopedic surgery.

The invention provides a reset robot connecting and fixing device which comprises a connecting base plate (1), a movable connecting plate (2) and a first locker (3);

the connecting substrate 1 is provided with a positioning hole (110), a mounting hole (106), a mounting hole (107), a mounting hole (108) and a mounting hole (109), the positioning hole 110 is connected with a fixing pin (101), and a screw (102), a screw (103), a screw (104) and a screw (105) are respectively arranged in the mounting hole (106), the mounting hole (107), the mounting hole (108) and the mounting hole (109);

the top surface of the connecting substrate (1) is provided with two V-shaped grooves (111) and (112) which are vertical to each other; the connection substrate 1 is provided with a rear first connection surface (120) and a second connection surface (121), and the second connection surface (121) is positioned at the periphery of the first connection surface (120);

a hole (201), a hole (202), a first connecting surface (205), a second connecting surface (206), a groove (207), a threaded hole (208), a threaded hole (209), a mounting hole (210), a mounting hole (211) and a threaded hole (212) are formed in the body of the movable connecting plate (2); when the movable connecting plate (2) is connected to the connecting substrate (1), the first connecting face (120) and the second connecting face (206) are in contact, and the second connecting face (121) and the first connecting face (205) are in contact;

the first locker (3) comprises a fixing block (301), a locking block (302), a locking rod (303), a locking handle (304) and a fixing pin (305), wherein the fixing block (301) is provided with a threaded hole (307), a threaded hole (309) and a threaded hole (310), the locking block (302) is provided with a hole (308) and a pin hole (311), and the fixing pin (305) is inserted into the pin hole (311); wherein the fixed block (301) is fixed in the groove (207) of the movable connecting plate 2 through a threaded hole (309) and a threaded hole (310) by using a screw (203) and a screw (204) which pass through a hole (201) and a hole (202), and the locking handle (304) is connected with the locking rod (303); the locking rod (303) is provided with a thread which can be screwed into a threaded hole (307) of the fixed block (301), the tail end of the locking rod (303) can be inserted into a hole (308) of the locking block (302), and the hole (308) is communicated with the pin hole (311); after the locking rod (303) is inserted into the hole (308), the lower end of the fixing pin (305) is clamped at the groove (312) of the locking rod (303); when the locking handle (304) is rotated, the inclined surface (306) of the locking block (302) is contacted with the inclined surface (130) of the connection substrate (1).

Preferably, the reset robot connection fixing device further comprises an auxiliary locker (4), wherein the auxiliary locker (4) comprises a movable pin (401), an auxiliary locking handle (402), a spring (405), a screw (406) and a screw (407), the movable pin (401) comprises a shell (413), a pin rod (404) and two poke rods (403), the pin rod (404) penetrates through the shell (413), the two poke rods (403) are connected with the rear end of the pin rod (404), the shell (413) is provided with external threads (413-1), the spring fixing seat (412) is fixed in a threaded hole (208) of the movable connecting plate (2), the screw (406) passes through the hole (409) on the auxiliary locking handle (402) and is screwed into the threaded hole (213) of the movable connecting plate (2), and the auxiliary locking handle (402) can rotate by taking the screw (406) as a center; the spring (405) is pressed on the spring fixing seat (412) by screwing the screw (407) into a threaded hole (410) on the auxiliary locking handle (402); the spring fixing seat 412 is fixed in a threaded hole (209) on the movable connecting plate (2) through a threaded structure; the slot (411) on the secondary locking handle (402) is located between the two tap levers (403).

Preferably, the reset robot connecting and fixing device further comprises a reference frame, and the reference frame is connected with the movable connecting plate.

Preferably, the reference frame comprises a support rod (501), a ball frame (502) and a marking ball (503), wherein the ball frame (502) is fixedly connected with the upper end of the support rod (501), the marking ball (503) is connected with the ball frame (502), and the lower end of the support rod (501) is fixedly connected with a movable connecting plate (2).

Preferably, the supporting rod (501) is connected with a first positioning shaft (511) and a second positioning shaft (512), the first positioning shaft (511) and the second positioning shaft (512) are respectively inserted into a hole (210) and a hole (211) in the movable connecting plate (2), the first positioning shaft (511) is provided with a V-shaped groove (513), the supporting rod locking screw (505) is provided with a V-shaped head, the supporting rod locking screw (505) is screwed in from a threaded hole (212) in the movable connecting plate (2), and the V-shaped head of the supporting rod locking screw (505) is clamped into the V-shaped groove (513) in the first positioning shaft (511);

the upper end of bracing piece (501) is equipped with mounting hole (514), mounting hole (515), screw hole (516), ball frame 502 is connected with location axle three (521), location axle four (522) are equipped with V type groove, insert mounting hole (514), mounting hole (515) respectively in location axle three (521), location axle four (522), screw in screw hole (516) with ball frame locking screw 504, ball frame locking screw (504) are equipped with V type head, and the V type head card of ball frame locking screw (504) goes into the V type groove of location axle four (522).

The invention has the advantages that the accessories used by the reset robot can be quickly and safely connected, and the operation is simple and convenient. And the effect of electric isolation is achieved for the patient, and the electric injury to the patient is prevented. The connecting mode of the invention can effectively prevent the accessory from generating unnecessary displacement or rotation relative to the reset platform under the action of external force. The mark line which is coincident with the X, Y direction on the reset robot is arranged on the resetting robot, so that the hand-eye calibration of the reset robot can be conveniently carried out at any time. The joint locking device of the present invention effectively increases the locking reliability against a similar reference frame by the center-offset principle. The invention improves the usability of the reset robot and facilitates the aseptic operation in the operation by fixing the reference frame used by the reset robot on the external connecting device. In particular, the connection substrate cannot be replaced by new parts in order to prevent the connection substrate from being damaged when used in a special environment. The design is completely symmetrical in front and back and symmetrical in left and right. In the event of damage to the contralateral feature, a replacement installation may be performed.

Further features of the invention will be apparent from the description of the embodiments which follows.

Drawings

Fig. 1 is a front view of a reset robot attachment fixture;

fig. 2 is a left side view of the reset robot attachment fixture;

fig. 3 is a right side view of the reset robot attachment fixture;

fig. 4 is a top view of the reset robot attachment fixture;

fig. 5 is a bottom view of the reset robot attachment fixture;

fig. 6 is an exploded view of the reset robot attachment fixture;

FIG. 7 is a schematic view of the structure of FIG. 6 with a gap between the screw and the articulating web;

FIG. 8 is a schematic view of the structure of FIG. 6, in which a V-shaped groove is formed on the top surface of the connection substrate;

FIG. 9 is a schematic view of the construction of FIG. 6 with mounting holes in the articulating web;

FIG. 10 is a schematic view of a V-shaped groove on a positioning shaft of the support rod;

FIG. 11 is a schematic view of the connection of the lower end of the support rod to the movable connecting plate;

FIG. 12 is a schematic view of the connection between the locking screw of the support rod and the positioning shaft of the support rod;

fig. 13 is an exploded view of the reset robot attachment fixture;

FIG. 14 is a schematic view of the connection structure of the upper end of the support rod and the ball rack;

FIG. 15 is an exploded view of the secondary lock;

FIG. 16 is a schematic view of the movable pin;

FIG. 17 is a schematic view showing a state in which the pin of the auxiliary locker is protruded by the spring and can be inserted into the hole of the connection substrate;

FIG. 18 is a schematic view showing a state in which the auxiliary lock locking handle is pressed by hand to retract the pin shaft and thereby unlock;

FIG. 19 is a schematic structural diagram of the first connecting side plate and the second connecting side plate mounted on the reset robot;

FIG. 20 is an exploded view of the structure shown in FIG. 19;

FIG. 21 is a structural schematic view of a first fixing sleeve;

FIG. 22 is an enlarged partial view of a corner of a first retaining sleeve;

fig. 23 is a schematic position diagram of the X-ray fluoroscopy area.

The symbols in the drawings illustrate that:

1. the device comprises a connecting base plate, 2, a movable connecting plate, 3, a first locker, 4, an auxiliary locker and 5, a reference frame.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments thereof with reference to the attached drawings.

As shown in fig. 1 to 18, the reset robot connection fixing device comprises a connection base plate 1, a movable connection plate 2, a first locker 3, an auxiliary locker 4 and a reference frame 5. The reset robot is connected with the fixing device and is mainly used for supporting the legs.

The bottom of the connecting substrate 1 is provided with a positioning hole 110, the connecting substrate 1 is provided with a mounting hole 106, a mounting hole 107, a mounting hole 108 and a mounting hole 109, the fixing pin 101 is connected with the positioning hole 110 to realize the mounting of the fixing pin 101, the lower part of the fixing pin 101 is connected with the reset robot, and the accurate positioning of the connecting substrate 1 and the reset robot on the physical position is completed. The screws 102, 103, 104 and 105 pass through the corresponding mounting holes 106, 107, 108 and 109 on the connection substrate 1 to fix the connection substrate 1 to the reset robot. In order to ensure absolute electrical isolation of the patient from the device, the screw 102 is spaced apart from the articulation plate 2 by a minimum clearance distance d of 10 mm, and the other screws 103, 1104 and 1105 are likewise spaced apart by such a large distance.

The top surface of the connection substrate 1 is provided with two V-grooves 111 and 112 perpendicular to each other. After the connection substrate 1 is connected with the reset robot, the V-shaped groove 111 coincides with the X axis of the reset robot, and the V-shaped groove 112 coincides with the Y axis of the reset robot. The advantage of this design is that the reset robot can be calibrated by hand and eye whenever.

The movable connecting plate 2 has a hole 201, a hole 202, a first connecting surface 205, a second connecting surface 206, a groove 207, a threaded hole 208, a threaded hole 209, a mounting hole 210, a mounting hole 211 and a threaded hole 212 on its body. When the movable connection plate 2 needs to be mounted on the robot for resetting, it is actually a process of connecting the movable connection plate 2 and the connection substrate 1. In order to ensure that the movable connecting plate 2 and the connecting substrate 1 do not relatively move during the reduction operation, a full circle of the first connecting surface 120 and the second connecting surface 121 are specially designed on the connecting substrate 1, and the second connecting surface 121 is located at the periphery of the first connecting surface 120. The movable connecting plate 2 is provided with a first connecting surface 205 and a second connecting surface 206 designed into a whole circle, the first connecting surface 205 is positioned at the periphery of the second connecting surface 206, when the movable connecting plate 2 is mounted on the connecting substrate 1, the first connecting surface 120 and the second connecting surface 206 are completely contacted, and the second connecting surface 121 and the first connecting surface 205 are completely contacted.

In order to ensure the stability of the connection between the connection base plate 1 and the movable connection plate 2 during the resetting process, a first locker 3 and a second locker 4 are designed.

The first locker 3 comprises a fixing block 301, a locking block 302, a locking rod 303, a locking handle 304 and a fixing pin 305. The fixing block 301 has a threaded hole 307, a threaded hole 309, and a threaded hole 310. The locking block 302 has a hole 308 and a pin hole 311, and a fixing pin 305 is inserted into the pin hole 311. Wherein the fixed block 301 is fixed in the groove 207 of the movable connecting plate 2 through a threaded hole 309 and a threaded hole 310 by using a screw 203 and a screw 204 which pass through the hole 201 and the hole 202, so that the fixed block 301 is mounted with the movable connecting plate 2. Wherein the locking handle 304 is connected to the locking bar 303. The locking bar 303 is threaded into a threaded bore 307 in the anchor block 301 and the end of the locking bar 303 is inserted into a bore 308 in the locking block 302, the bore 308 and the pin bore 311 being in communication. After the locking bar is inserted into the hole 308 at 303, the lower end of the fixing pin 305 inserted into the hole 311 is caught at the groove 312 of the locking bar 303. So that the locking block 302 can only move along the axial direction of the locking rod 303 after the locking handle 304 is turned, thereby achieving the purpose of locking.

After the movable connecting plate 2 is installed, when locking is needed, the locking handle 304 is rotated clockwise, the locking handle 304 drives the locking rod 303 to rotate, and the rotation of the locking rod 303 is converted into the displacement of the locking block 302. When the locking block 302 moves forward, the inclined surface 306 of the locking block 302 contacts the inclined surface 130 of the connection substrate 1, thereby locking the swing link plate 2 to the reset robot. In order to prevent possible accidents due to the operator not being fully locked.

In addition to the first lock 3, an auxiliary lock 4 is provided.

In the process of installing the movable connecting plate 2, the auxiliary locking handle 402 needs to be pressed by hand, the auxiliary locking handle 402 drives the poking rod 403 outwards, the pin rod 404 moves outwards at the same time, and the movable connecting plate 2 can be installed at this time. When the auxiliary locking handle 402 is released after the movable connection plate 2 is mounted, the pin 404 is automatically inserted into the hole 131 of the connection base plate 1 by the spring 405. The secondary lock is completed.

The auxiliary locker 4 comprises a movable pin 401, an auxiliary locking handle 402, a spring 405, a screw 406, a screw 407. The movable pin 401 comprises a housing 413, a pin rod 404 and two tap rods 403, wherein the pin rod 404 penetrates through the housing 413, the two tap rods 403 are connected with the rear end of the pin rod 404, and the housing 413 is provided with external threads 413-1. Wherein the movable pin 401 is fixed in the threaded hole 208 of the movable connection plate 2 by external threads 413-1 thereon so that the housing 413 of the movable pin 401 is connected with the movable connection plate 2. A screw 406 is inserted through the hole 409 of the auxiliary lock handle 402 and screwed into the screw hole 213 of the movable link plate 2 to connect the auxiliary lock handle 402 to the movable link plate 2, and the auxiliary lock handle 402 can be rotated centering on the screw 406. In order to enable the auxiliary locking handle 402 to be automatically reset after being pressed, the spring 405 is pressed on the spring fixing seat 412 by screwing the screw 407 into the threaded hole 410 on the auxiliary locking handle 402. The spring fixing seat 412 is fixed in the threaded hole 209 on the movable connecting plate 2 through a threaded structure. Wherein the slot 411 on the secondary locking handle 402 is located between the two tap levers 403. When the auxiliary lock handle 402 is pressed, the movable pin 401 is driven to perform an unlocking operation. When the auxiliary locking handle 402 is released, the movable pin 401 is automatically locked by the spring 405.

The reference frame 5 comprises a support rod 501, a ball frame 502, a marking ball 503, a ball frame locking screw 504 and a support rod locking screw 505, and the reference frame 5 mainly plays a role in tracking the movement position of the resetting robot in real time in the operation process. The supporting rod 501 is provided with a first positioning shaft 511 and a second positioning shaft 512, the first positioning shaft 511 and the second positioning shaft 512 can be inserted into the hole 210 and the hole 211 in the movable connecting plate 2 respectively, wherein the hole 210 is an oblong hole and mainly limits the reference frame 5 to rotate around the second positioning shaft 512. The hole 211 is a circular hole that restricts the movement of the reference frame 5 in the direction of the face of the hole. The movement of the reference frame 5 in the XY plane direction of the whole reset robot is limited by the limiting effect of the holes 210 and 211. The first positioning shaft 511 is provided with a V-shaped groove 513, and the front part of the support rod locking screw 505 is provided with a V-shaped head corresponding to the V-shaped groove 513. After the support rod locking screw 505 is screwed in from the threaded hole 212 of the movable connecting plate 2, the support rod locking screw can be screwed into the threaded hole 211 on the movable connecting plate 2, and the V-shaped head of the support rod locking screw 505 is clamped into the V-shaped groove 513 of the first positioning shaft 511, so that the first positioning shaft 511 can be locked. After the first positioning shaft 511 and the second positioning shaft 512 are completely inserted into the holes 210 and 211, respectively. The center line of the V-shaped groove 513 is slightly higher than the center line of the support rod locking screw 505. Therefore, when the support rod locking screw 505 is screwed in, a downward pulling force F is formed through the V-shaped groove 513, so that the bottom surface 510 of the lower end of the support rod 501 can be more closely attached to the upper surface of the movable connecting plate 2, and the reference frame 5 can be better locked.

The connection structure of the ball rack 502 and the support rod 501 also adopts a connection mode that the support rod 501 is connected with the movable connection plate 2 through a first positioning shaft 511 and a second positioning shaft 512. The mounting holes 514, 515 and 516 on the upper end of the support rod 501 have the same structure as the mounting holes 210, 211 and 212 on the movable connecting plate 2. The third positioning shaft 521 and the fourth positioning shaft 522 connected to the ball frame 502 have the same structures as the second positioning shaft 512 and the first positioning shaft 511 on the support rod 501, and the fourth positioning shaft 522 is provided with a V-shaped groove. The third positioning shaft 521 and the fourth positioning shaft 522 are inserted into the mounting holes 514 and 515, respectively. The second positioning shaft 522 is locked by the second ball rack locking screw 504, the ball rack locking screw 504 is screwed into the threaded hole 516, the ball rack locking screw 504 is provided with a V-shaped head, and the V-shaped head of the ball rack locking screw 504 is clamped into the V-shaped groove of the fourth positioning shaft 522. A ball support 523 is coupled to the rack 502 for mounting the identification ball 503 for recognition by the infrared navigation device.

The reduction robot connecting and fixing device is mainly applied to reduction of common thighbones in orthopedics.

When the reset robot is used for connecting and fixing the device, a fixing plate a5 can be fixedly installed on the movable connecting plate 2, and then the connecting side plate a1 and the connecting side plate a2 are fixedly installed on the fixing plate a 5. The first connecting side plate A1 is provided with a first threaded hole A102 and a second threaded hole A101. The second threaded hole A101 is used to secure the condyle, which is preferably defined. Much time is spent in designing the first threaded hole a102, some of which is used to look through various literature to be able to determine how to avoid blood vessels and nerves near the condyle, some of which is done with extensive bone modeling trials. A large amount of human bone experimental data are analyzed to obtain that the distance between the first threaded hole 102 and the second threaded hole 101 is 100-200 mm, and the deviation is 7-10 degrees, so that the femur can be fixed well while the operation is met. In order to carry out operations on left and right femurs, a first threaded hole A202 and a second threaded hole A201 are also arranged on the corresponding connecting side plate A2, the first threaded hole A202 and the first threaded hole A102 are coaxial, and the second threaded hole A201 and the second threaded hole A101 are coaxial.

The rear end of the first fixing sleeve A3 is provided with an external hexagonal end A301 which can play a role of fixing by using a wrench. The first fixing sleeve A3 is provided with an external thread A302, and the external thread A302 and the thread on the first threaded hole A102 can be matched for use and can be screwed in so that the first fixing sleeve A3 can clamp the femur. In order to prevent damage to the tissue and femur during rotation of the first fixing sleeve A3, the front end of the first fixing sleeve A3 has a rounded corner a303 (shown in fig. 3 and 4) to minimize damage to the tissue and femur.

Similarly, the second fixing sleeve a4 has the same structure as the first fixing sleeve A3. The second fixing sleeve A4 is provided with an external thread (the external thread is connected and matched with the second threaded hole A101), the front end of the second fixing sleeve A4 is provided with a fillet, and the rear end of the second fixing sleeve A4 is provided with an outer hexagonal end part. The structure of the third fixing sleeve A8 and the fourth fixing sleeve A9 is the same as that of the first fixing sleeve A3, the third fixing sleeve A8 is provided with external threads (the external threads are connected and matched with the first threaded hole A202), the front end of the third fixing sleeve A8 is provided with a fillet, and the rear end of the third fixing sleeve A8 is provided with an outer hexagonal end. The fixing sleeve IV A9 is provided with external threads (the external threads are connected and matched with the second threaded hole A201), the front end of the fixing sleeve IV A9 is provided with a fillet, and the rear end of the fixing sleeve IV A9 is provided with an outer hexagonal end part.

After the first fixing sleeve A3 and the second fixing sleeve A4 clamp the distal end of the femur, the first fixing needle A6 and the second fixing needle A7 can be driven respectively to fix the distal end of the femur in one step. The first fixing needle A6 penetrates through the first fixing sleeve A3, and the second fixing needle A7 penetrates through the second fixing sleeve A4. Similarly, fixed needle three a10 passes through fixed sleeve three A8, and fixed needle four a11 passes through fixed sleeve four a 9.

The first connecting side plate A1 is provided with an intramedullary nail locking special hole A103, the position and the size of the hole are determined according to different sizes of intramedullary nails which are arranged on the market and penetrate into the femur with corresponding length. The first connecting side plate A2 is also provided with a special intramedullary nail locking hole A203.

The first connecting side plate a1 is provided with a fluoroscopy area (portion within the dashed box), and the first connecting side plate a2 is also provided with a fluoroscopy area.

During the operation, the leg of the patient is placed between the first connecting side plate and the second connecting side plate; and then, after the distal end of the femur is clamped by the first fixing sleeve, the second fixing sleeve, the third fixing sleeve and the fourth fixing sleeve, the first fixing needle, the second fixing needle, the third fixing needle and the fourth fixing needle are respectively driven into the first fixing sleeve, the second fixing needle, the third fixing needle and the fourth fixing sleeve to fix the distal end of the femur in one step.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art should be informed by the teachings of the present invention, other configurations of the components, the driving device and the connection means, which are similar to the technical solution and are not designed creatively, shall fall within the protection scope of the present invention without departing from the inventive spirit of the present invention.