CN111728668B

CN111728668B - Medical electric bone taking clamp

Info

Publication number: CN111728668B
Application number: CN202010655044.3A
Authority: CN
Inventors: 金天明; 孙晓雨; 李庭庭
Original assignee: Luzhou Peoples Hospital
Current assignee: Luzhou Peoples Hospital
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2022-06-07
Anticipated expiration: 2040-07-09
Also published as: CN111728668A

Abstract

A medical electric bone taking clamp is characterized by comprising a shell A, a shell B, a chuck part, a pull rod top plate, a pull rod spring, a pull rod, a clamping groove connecting rod, a pulley spring, a pulley, a winding wheel, a pull rod top plate and a motor, wherein the shell A and the shell B form a shell, and the chuck part is arranged at the outer end of the shell formed by the shell A and the shell B; the pull rod top plate is fixedly connected with the pull rod, the motor is fixedly arranged on the shell A, and the motor transmits power to the winding wheel through the transmission mechanism; the clamping head part is controlled by two types of drives, namely manual drive and electric drive, so that broken bones can be clamped out more accurately, and the working efficiency is improved; the torque is increased by transmitting the torque to the large gear through the small gear, so that the winding wheel is conveniently driven, and the driving force is increased; through manual control, can do the work of pressing from both sides through manual when the machine does not have the electricity, perhaps the clamping force is not good to hold, has made things convenient for the doctor to use.

Description

Medical electric bone taking clamp

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical electric bone taking clamp.

Background

At present, the clamping force and the clamping opening size of the existing medical clamp are mostly fixed and unchangeable, the clamping force and the clamping opening size can be changed in some parts, the change range is small, the manual operation is realized, sometimes, the broken bone which is clamped by the clamp is not well controlled by the manual operation force, the secondary injury is caused, but the electric clamp does not work, or the clamping action which is not well controlled by the manual operation force is required, so that the clamp which can be manually and electrically switched is needed.

Disclosure of Invention

Aiming at the problems, the invention provides the medical electric bone taking clamp, which controls the chuck part to clamp broken bones through two types of drive, namely manual drive and electric drive, can more accurately clamp the broken bones and improves the working efficiency; the torque is increased by transmitting the torque to the large gear through the small gear, so that the winding wheel is conveniently driven, and the driving force is increased; through manual control, can do the work of pressing from both sides through manual when the machine does not have the electricity, perhaps the clamping force is not good to hold, has made things convenient for the doctor to use.

The technical scheme adopted by the invention is as follows: a medical electric bone taking clamp is characterized by comprising a shell A, a shell B, a chuck part, a pull rod top plate, a pull rod spring, a pull rod, a clamping groove connecting rod, a pulley spring, a pulley, a winding wheel, a pull rod top plate and a motor, wherein the shell A and the shell B form a shell, and the chuck part is arranged at the outer end of the shell formed by the shell A and the shell B; the pull rod top plate is fixedly connected with the pull rod, the pull rod spring is installed on the pull rod, one end of the pull rod spring is in contact with the pull rod top plate, the other end of the pull rod spring is in contact with the shell A, and the pull rod spring generates elasticity to enable the pull rod top plate to move in the opposite direction of the winding wheel; the pull rod is connected with the pull rod top plate through an arc-shaped plate; the clamping groove connecting rod is fixedly connected with the pull rod top plate; the clamping groove is fixedly arranged at the outer side end of the clamping groove connecting rod, and a pulley spring is arranged on the clamping groove connecting rod; one end of the pulley spring is connected with the clamping plate on the clamping groove connecting rod, the other end of the pulley spring is connected with the shell A, and the pulley spring generates elasticity to enable the clamping groove connecting rod to move in the opposite direction of the winding wheel; the pulley is arranged at the other end of the clamping groove connecting rod, one end of the rope is fixedly arranged on the shell A, the other end of the rope penetrates through the pulley to be wound on the winding wheel, and the pulley is driven by the rotation of the winding wheel to further drive the clamping groove to move towards the winding wheel; the motor is fixedly arranged on the shell A, and the motor transmits power to the winding wheel through the transmission mechanism;

the transmission mechanism comprises a motor bevel gear, a pinion, a bevel gear and a gearwheel mechanism, the motor bevel gear is fixedly arranged on a motor shaft of the motor, the bevel gear is fixedly connected with the pinion through a shaft, and the motor bevel gear is meshed with the bevel gear; the small gear is meshed with the large gear mechanism; the winding wheel is connected with the large gear mechanism;

furthermore, the manual control device further comprises a manual switch, wherein the manual switch is fixedly arranged on the manual rod fixing plate, and the manual rod fixing plate is controlled through the manual switch so as to manually control the machine to work.

Further, a friction mechanism is also included, and the friction mechanism is used for increasing the resistance of the winding wheel to complete the locking of the winding wheel.

Furthermore, the friction mechanism comprises an N-shaped plate, a friction mechanism fixing plate, a friction ring, a round hole and a friction mechanism spring, and a ring on the N-shaped plate is rotatably installed with the friction mechanism fixing plate; the inner side surface of the friction mechanism fixing plate is provided with a friction ring, and the friction ring is in friction contact with the outer side of the winding wheel; the friction mechanism spring is arranged on the outer side of the friction mechanism fixing plate, and the outer side end of the friction mechanism spring is fixedly connected with the shell A; the friction mechanism spring generates a pulling force to move the friction mechanism away from the winding wheel.

Furthermore, the large gear mechanism comprises a large gear, a gear driven shaft, a pre-tightening force control rod and a gear driven shaft ring; the gear driven shaft is rotatably arranged in a circular hole of the large gear; a gear driven shaft ring is arranged at the upper end of the gear driven shaft; the pretightening force control rod is arranged in a circular ring of the driven shaft of the gear; the elastic mechanism is controlled by the pretightening force control rod to increase the friction force between the circular ring of the driven shaft of the gear and the large gear.

Furthermore, the elastic mechanism comprises a top ball, a top ball spring, an inclined plane sliding block, a conical surface and a pretightening force control rod spring; the inclined slide block is slidably arranged in the circular ring of the driven shaft of the gear; the ball ejecting spring is arranged between the inclined plane sliding block and the ball ejecting block and generates elasticity, so that the ball ejecting spring is clamped into a circular ring of the gear driven shaft and a circular hole of the large gear; the inclined plane sliding block is in sliding contact with the conical surface; the pre-tightening force control rod spring is fixedly arranged between the gear driven shaft and the conical surface, and generates elastic force to enable the gear driven shaft to move upwards; the lower end of the pretightening force control rod is provided with a conical surface.

Furthermore, the gear transmission mechanism further comprises an adjusting button, the adjusting button is rotatably installed in a round hole of the shell B and is in threaded connection with the pretightening force control rod, and the position of the pretightening force control rod is controlled by rotating the adjusting button so as to control the friction force between the circular ring of the driven gear shaft and the large gear.

Further, the chuck part comprises a chuck part shell, a trapezoidal block, an inclined plane sliding groove, clamping rods, a connecting shaft, an arc clamping groove and a trapezoidal block spring, the two chuck part shells are connected, and the two clamping rods are slidably mounted in the chuck part shells; the inner side of the clamping rod is provided with an inclined chute; the trapezoidal block is slidably arranged in the inclined plane chute; the trapezoidal block is slidably arranged in the shell of the chuck part; the connecting shaft is fixedly arranged on the end face of the trapezoidal block, and an arc clamping groove is formed in the upper surface of the connecting shaft; the trapezoidal block spring is installed in the shell of the chuck part, and the trapezoidal block spring generates elastic force to enable the trapezoidal block to move in the opposite direction of the connecting shaft.

The invention has the beneficial effects that:

1. the chuck part is controlled by two types of drives, namely manual drive and electric drive, so that broken bones can be clamped more accurately, and the working efficiency is improved.

2. The large gear is transmitted through the small gear, so that the torsion is increased, the winding wheel is convenient to drive, and the driving force is increased.

3. Through manual control, can do the work of pressing from both sides through manual when the machine does not have the electricity, perhaps the clamping force is not good to hold, has made things convenient for the doctor to use.

4. The N-shaped plate is driven by pressing the friction button, so that the friction mechanism fixing plate is driven to enable the friction ring to be in contact with the winding wheel to generate friction force, so that the winding wheel is locked, locking is achieved, and the work of a doctor is facilitated.

5. The elastic mechanism is controlled by the pretightening force control rod to increase the friction force between the circular ring of the gear driven shaft and the gear wheel, so that the pretightening force between the circular ring of the gear driven shaft and the gear wheel is increased, the adjustable early warning force is realized, and the adjustable clamping force is further realized.

6. Different clamping rods are replaced by replacing the chuck part, and bones in different shapes are clamped by clamping plates in different shapes on the clamping rods, so that the functions of clamping different bones and different bones are realized, and the practical range of the machine is improved.

Drawings

Fig. 1-3 are schematic diagrams of the overall structure of the present invention.

Fig. 4 is a schematic cross-sectional structure view of the overall structure of the present invention.

Fig. 5 is a schematic cross-sectional structure of a part of the structure of the present invention.

Fig. 6-7 are partial schematic structural views of the present invention.

Fig. 8 is a schematic view of the structure of the chuck section of the present invention.

Fig. 9-10 are schematic structural views of the friction mechanism of the present invention.

Fig. 11-12 are schematic structural views of the large gear mechanism of the present invention.

Fig. 13 is an enlarged structural view of a1 shown in fig. 12 according to the present invention.

Reference numerals: 1-shell A, 2-shell B, 3-chuck part, 4-manual switch, 5-adjusting button, 6-rotating ring, 7-pull rod top plate, 8-pull rod spring, 9-pull rod, 10-chuck, 11-chuck connecting rod, 12-pulley spring, 13-pulley, 14-friction mechanism, 15-winding wheel, 16-friction button, 117-manual rod fixing plate, 18-motor, 19-motor bevel gear, 20-pinion, 21-bevel gear, 22-big gear mechanism, 301-chuck part shell, 302-trapezoidal block, 303-bevel chute, 304-chuck rod, 305-connecting shaft, 306-circular arc chuck groove, 307-trapezoidal block spring, 1401-N type plate, 1402-friction mechanism fixing plate, 1403-friction ring, 1404-round hole, 1405-friction mechanism spring, 2201-large gear, 2202-gear driven shaft, 2203-pretension force control rod, 2204-gear driven shaft ring, 2205-top bead, 2206-top bead spring, 2207-inclined plane slider, 2208-conical surface and 2209-pretension force control rod spring.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, and fig. 13, a medical electric bone taking clamp is characterized by comprising a housing a1, a housing B2, a clamp head portion 3, a pull rod top plate 7, a pull rod spring 8, a pull rod 9, a clamp slot 10, a clamp slot connecting rod 11, a pulley spring 12, a pulley 13, a winding wheel 15, a pull rod top plate 17, and a motor 18, wherein the housing a1 and the housing B2 form a housing, and the clamp head portion 3 is mounted at an outer end of the housing formed by the housing a1 and the housing B2; the pull rod top plate 7 is fixedly connected with the pull rod 9, the pull rod spring 8 is installed on the pull rod 9, one end of the pull rod spring 8 is in contact with the pull rod top plate 7, the other end of the pull rod spring 8 is in contact with the shell A1, and the pull rod spring 8 generates elasticity to enable the pull rod top plate 7 to move in the opposite direction of the winding wheel 15; the pull rod 9 is connected with a pull rod top plate 17 through an arc-shaped plate; the clamping groove connecting rod 11 is fixedly connected with the pull rod top plate 7; the clamping groove 10 is fixedly arranged at the outer side end of the clamping groove connecting rod 11, and the pulley spring 12 is arranged on the clamping groove connecting rod 11; one end of the pulley spring 12 is connected with a clamping plate on the clamping groove connecting rod 11, the other end of the pulley spring 12 is connected with the shell A1, and the pulley spring 12 generates elasticity to enable the clamping groove connecting rod 11 to move in the opposite direction of the winding wheel 15; the pulley 13 is installed at the other end of the clamping groove connecting rod 11, one end of the rope is fixedly installed on the shell A1, the other end of the rope penetrates through the pulley 13 to be wound with the winding wheel 15, and the pulley 13 is driven by the rotation of the winding wheel 15 so as to drive the clamping groove 10 to move towards the winding wheel 15; the motor 18 is fixedly arranged on the shell A1, and the motor 18 transmits power to the winding wheel 15 through a transmission mechanism; when the machine needs to be driven by electricity, the storage battery carried by the machine supplies power to the motor 18 by pressing down the switch, the motor 18 drives the transmission mechanism to drive the winding wheel 15 to rotate, and then the wire on the winding wheel 15 is driven to drive the pulley 13 to move towards the winding wheel 15 so as to drive the clamping groove 10 to drive the chuck part 3 to complete clamping; when the manual switch 4 is pulled manually to drive the machine to finish the clamping action, the manual rod fixing plate 17 is driven to drive the pull rod 9 to drive the clamping groove 10 to drive the chuck part 3 to finish the clamping action, and when the manual switch 4 is loosened, the clamping groove 10 moves in the opposite direction to the winding wheel 15 through the elasticity of the pull rod spring 8 and the pulley spring 12, so that the chuck part 3 can be loosened;

the transmission mechanism comprises a motor bevel gear 19, a pinion 20, a bevel gear 21 and a gearwheel mechanism 22, the motor bevel gear 19 is fixedly arranged on a motor shaft of the motor 18, the bevel gear 21 is fixedly connected with the pinion 20 through a shaft, and the motor bevel gear 19 is meshed with the bevel gear 21; the small gear 20 is meshed with the large gear mechanism 22; the winding wheel 15 is connected with a large gear mechanism 22; specifically, the torque is transmitted to the large gear mechanism 22 through the bevel gear 21 and transmitted to the large gear through the small gear, so that the torque is increased, and the winding wheel 15 is conveniently driven.

In an optional implementation manner of the embodiment of the invention, besides the same parts as those in the previous embodiment, the manual switch 4 is further included, the manual switch 4 is fixedly installed on the manual rod fixing plate 17, and the manual rod fixing plate 17 is controlled through the manual switch 4 so as to manually control the machine to work; through manual control, the clamping work can be completed manually when the machine is not powered or the clamping force is not well mastered.

In an alternative embodiment of the invention, in addition to the same components as in the previous embodiment, a friction mechanism 14 is included, the friction mechanism 14 serving to increase the resistance of the winding wheel 15 to complete the locking of the winding wheel 15.

In an optional implementation manner of the embodiment of the present invention, except for the same components as those in the previous embodiment, the friction mechanism 14 includes an N-shaped plate 1401, a friction mechanism fixing plate 1402, a friction ring 1403, a circular hole 1404, and a friction mechanism spring 1405, wherein a circular ring on the N-shaped plate 1401 is rotatably mounted on the friction mechanism fixing plate 1402; a friction ring 1403 is arranged on the inner side surface of the friction mechanism fixing plate 1402, and the friction ring 1403 is in friction contact with the outer side of the winding wheel 15; the friction mechanism spring 1405 is arranged at the outer side of the friction mechanism fixing plate 1402, and the outer side end of the friction mechanism spring 1405 is fixedly connected with the shell A1; the friction mechanism spring 1405 generates a pulling force to move the friction mechanism 14 away from the winding wheel 15; specifically, N-shaped plate 1401 is fixedly connected to friction button 16, and by pressing down friction button 16, N-shaped plate 1401 is driven to drive friction mechanism fixing plate 1402 to make friction ring 1403 contact with winding wheel 15 to generate friction force to lock winding wheel 15, so as to prevent rotation of locking winding wheel 15 to clamp chuck portion 3 to bone.

In an optional implementation manner of the embodiment of the present invention, except for the same components as those in the previous embodiment, the gearwheel mechanism 22 includes a gearwheel 2201, a gear driven shaft 2202, a preload control rod 2203, and a gear driven shaft ring 2204; the gear driven shaft 2202 is rotatably installed in a circular hole of the large gear 2201; a gear driven shaft circular ring 2204 is arranged at the upper end of the gear driven shaft 2202; the pretightening force control rod 2203 is arranged in a gear driven shaft circular ring 2204; the elastic mechanism is controlled by the pre-tightening force control rod 2203 to increase the friction force between the gear driven shaft ring 2204 and the gearwheel 2201, so that the pre-tightening force between the gear driven shaft ring 2204 and the gearwheel 2201 is increased.

In an optional implementation manner of the embodiment of the present invention, except for the same components as those in the previous embodiment, the elastic mechanism includes a top ball 2205, a top ball spring 2206, a slope slider 2207, a conical surface 2208, and a pre-tightening force control rod spring 2209; the inclined slider 2207 is arranged in the circular ring 2204 of the driven gear shaft in a sliding manner; the ball ejecting spring 2206 is arranged between the inclined slider 2207 and the ball ejecting spring 2205, and the ball ejecting spring 2206 generates elastic force to enable the ball ejecting spring 2205 to be clamped into circular holes of the gear driven shaft 2204 and the large gear 2201; the inclined slider 2207 is in sliding contact with the conical surface 2208; the pre-tightening force control rod spring 2209 is fixedly installed between the driven gear shaft 2202 and the conical surface 2208, and the pre-tightening force control rod spring 2209 generates elastic force to enable the driven gear shaft 2202 to move upwards; the lower end of the pretightening force control rod 2203 is provided with a conical surface 2208; specifically, the position of the pre-tightening force control rod 2203 is adjusted by controlling the adjusting button 5 to adjust the elastic force of the ball-ejecting spring 2206, and the elastic force is increased by the ball-ejecting spring 2206, so that the pre-tightening force of the gear driven shaft ring 2204 and the large gear 2201 is increased.

In an optional implementation manner of the embodiment of the present invention, besides the same components as those in the previous embodiment, the present invention further includes an adjusting button 5, where the adjusting button 5 is rotatably installed in a circular hole of the housing B2, the adjusting button 5 is in threaded connection with the preload control rod 2203, and the position of the preload control rod 2203 is controlled by rotating the adjusting button 5, so as to control the friction between the gear driven shaft ring 2204 and the large gear 2201.

In an optional implementation manner of the embodiment of the present invention, except for the same components as those in the previous embodiment, the collet portion 3 includes a collet portion housing 301, a trapezoidal block 302, an inclined chute 303, a clamping bar 304, a connecting shaft 305, an arc clamping slot 306, and a trapezoidal block spring 307, the two collet portion housings 301 are connected, and the two clamping bars 304 are slidably mounted inside the collet portion housing 301; the inner side of the clamping rod 304 is provided with an inclined chute 303; the trapezoidal block 302 is slidably arranged in the inclined chute 303; the trapezoidal blocks 302 are slidably mounted in the collet portion housing 301; the connecting shaft 305 is fixedly arranged on the end surface of the trapezoidal block 302, and an arc clamping groove 306 is arranged on the connecting shaft 305; specifically, when the bone clamping device works, the arc clamping groove 306 is clamped into the clamping groove 10, and the clamping groove 10 drives the connecting shaft 305 to go up so as to drive the clamping rod 304 to clamp the bone; the trapezoidal block spring 307 is arranged in the clamping head part shell 301, and the trapezoidal block spring 307 generates elastic force to enable the trapezoidal block 302 to move towards the opposite direction of the connecting shaft 305; specifically, by replacing the collet part 3 and thus the different clamping bars 304, bones of different shapes are gripped by the different shapes of the clamping plates on the clamping bars 304.

Claims

1. The medical electric bone taking clamp is characterized by comprising a shell A (1), a shell B (2), a chuck part (3), a pull rod top plate (7), a pull rod spring (8), a pull rod (9), a clamping groove (10), a clamping groove connecting rod (11), a pulley spring (12), a pulley (13), a winding wheel (15), a manual rod fixing plate (17) and a motor (18), wherein the shell A (1) and the shell B (2) form a shell, and the chuck part (3) is arranged at the outer end of the shell formed by the shell A (1) and the shell B (2); the pull rod top plate (7) is fixedly connected with the pull rod (9), the pull rod spring (8) is installed on the pull rod (9), one end of the pull rod spring (8) is in contact with the pull rod top plate (7), the other end of the pull rod spring (8) is in contact with the shell A (1), and the pull rod spring (8) generates elastic force to enable the pull rod top plate (7) to move in the opposite direction of the winding wheel (15); the pull rod (9) is connected with the manual rod fixing plate (17) through an arc-shaped plate; the clamping groove connecting rod (11) is fixedly connected with the pull rod top plate (7); the clamping groove (10) is fixedly arranged at the outer side end of the clamping groove connecting rod (11), and a pulley spring (12) is arranged on the clamping groove connecting rod (11); one end of the pulley spring (12) is connected with a clamping plate on the clamping groove connecting rod (11), the other end of the pulley spring is connected with the shell A (1), and the pulley spring (12) generates elasticity to enable the clamping groove connecting rod (11) to move in the opposite direction of the winding wheel (15); the pulley (13) is arranged at the other end of the clamping groove connecting rod (11), one end of the rope is fixedly arranged on the shell A (1), the other end of the rope penetrates through the pulley (13) to be wound with the winding wheel (15), and the winding wheel (15) rotates to drive the pulley (13) to further drive the clamping groove (10) to move towards the winding wheel (15); the motor (181) is fixedly arranged on the shell A (1), and the motor (18) transmits power to the winding wheel (15) through a transmission mechanism;

the transmission mechanism comprises a motor bevel gear (19), a pinion (20), a bevel gear (21) and a gearwheel mechanism (22), the motor bevel gear (19) is fixedly arranged on a motor shaft of the motor (18), the bevel gear (21) is fixedly connected with the pinion (20) through a shaft, and the motor bevel gear (19) is meshed with the bevel gear (21); the small gear (20) is meshed with the large gear mechanism (22); the winding wheel (15) is connected with the large gear mechanism (22);

the large gear mechanism (22) comprises a large gear (2201), a gear driven shaft (2202), a pretightening force control rod (2203) and a gear driven shaft ring (2204); the gear driven shaft (2202) is rotatably arranged in a circular hole of the large gear (2201); a gear driven shaft circular ring (2204) is arranged at the upper end of the gear driven shaft (2202); the pretightening force control rod (2203) is arranged in a circular ring (2204) of a gear driven shaft; the elastic mechanism is controlled by a pretightening force control rod (2203) to increase the friction force between a gear driven shaft circular ring (2204) and a large gear (2201).

2. The medical electric bone taking clamp according to claim 1, further comprising a manual switch (4), wherein the manual switch (4) is fixedly arranged on the manual rod fixing plate (17), and the manual rod fixing plate (17) and thus the machine is controlled manually through the manual switch (4).

3. The medical electric bone clamp according to claim 1, further comprising a friction mechanism (14), wherein the friction mechanism (14) increases the resistance of the winding wheel (15) to complete the locking of the winding wheel (15).

4. The medical electric bone taking clamp according to claim 3, wherein the friction mechanism (14) comprises an N-shaped plate (1401), a friction mechanism fixing plate (1402), a friction ring (1403), a round hole (1404) and a friction mechanism spring (1405), and a ring on the N-shaped plate (1401) is rotatably installed on the friction mechanism fixing plate (1402); a friction ring (1403) is arranged on the inner side surface of the friction mechanism fixing plate (1402), and the friction ring (1403) is in friction contact with the outer side of the winding wheel (15); the friction mechanism spring (1405) is arranged on the outer side of the friction mechanism fixing plate (1402), and the outer side end of the friction mechanism spring (1405) is fixedly connected with the shell A (1); the friction mechanism spring (1405) generates a pulling force to move the friction mechanism (14) away from the winding wheel (15).

5. The medical electric bone taking clamp as claimed in claim 1, wherein the elastic mechanism comprises a top ball (2205), a top ball spring (2206), a bevel slider (2207), a conical surface (2208) and a pre-tightening force control rod spring (2209); the inclined slider (2207) is slidably arranged in a circular ring (2204) of a driven shaft of the gear; the ball ejecting spring (2206) is arranged between the inclined slider (2207) and the ball ejecting spring (2205), and the ball ejecting spring (2206) generates elasticity to enable the ball ejecting spring (2205) to be clamped into circular holes of the gear driven shaft (2204) and the gear wheel (2201); the inclined slider (2207) is in sliding contact with the conical surface (2208); the pre-tightening force control rod spring (2209) is fixedly arranged between the gear driven shaft (2202) and the conical surface (2208), and the pre-tightening force control rod spring (2209) generates elastic force to enable the gear driven shaft (2202) to move upwards; the lower end of the pretightening force control rod (2203) is provided with a conical surface (2208).

6. The medical electric bone taking clamp as claimed in claim 1, further comprising an adjusting button (5), wherein the adjusting button (5) is rotatably installed in a circular hole of the housing B (2), the adjusting button (5) is in threaded connection with the pre-tightening force control rod (2203), and the position of the pre-tightening force control rod (2203) is controlled by rotating the adjusting button (5) so as to control the friction force between the gear driven shaft ring (2204) and the bull gear (2201).

7. The medical electric bone taking clamp according to claim 1, wherein the collet part (3) comprises a collet part shell (301), a trapezoidal block (302), an inclined plane sliding groove (303), clamping rods (304), a connecting shaft (305), an arc clamping groove (306) and a trapezoidal block spring (307), the two collet part shells (301) are connected, and the two clamping rods (304) are slidably mounted in the collet part shells (301); an inclined chute (303) is arranged on the inner side of the clamping rod (304); the trapezoidal block (302) is slidably arranged in the inclined chute (303); the trapezoidal block (302) is slidably arranged in the clamping head part shell (301); the connecting shaft (305) is fixedly arranged on the end surface of the trapezoidal block (302), and an arc clamping groove (306) is formed in the upper surface of the connecting shaft (305); the trapezoid block spring (307) is installed in the clamping head part shell (301), and the trapezoid block spring (307) generates elastic force to enable the trapezoid block (302) to move towards the opposite direction of the connecting shaft (305).