CN112656499A

CN112656499A - Bone nail external member for orthopedics

Info

Publication number: CN112656499A
Application number: CN202011526683.6A
Authority: CN
Inventors: 冯学阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-04-16

Abstract

The invention discloses an orthopedic bone nail kit, which comprises a bone nail body and a nail extractor, wherein the bone nail kit comprises the bone nail body and the nail extractor, first threads are arranged on the surface of the bone nail body, magnetic blocks are arranged at the bottom end of a sliding groove, the top ends of the magnetic blocks and the lower end face of the magnetic block arranged at the bottom end of the sliding block are arranged in a mutual adsorption manner, an accommodating groove is formed in the head of the bone nail, a sealing sheet is arranged at the top end of an inner core and covers the accommodating groove, at least two elastic areas are arranged on the sealing sheet and fixedly connected with the sealing sheet, and the diameter length of the head of the bone nail is smaller than the diameter length of an opening at the bottom end of the nail extractor. This bone nail external member for orthopedics, bone nail itself adopt inside and outside bilayer structure, through the mode that sets up scalable inner core, can cooperate the use of getting the nail ware after bone tissue grows completely to demolish the bone nail convenient fast to during the healing, bone nail itself can not cause harmful effects to the operation of other tissues of human body.

Description

Bone nail external member for orthopedics

Technical Field

The invention relates to the technical field of orthopedic equipment, in particular to an orthopedic bone nail kit.

Background

The bone nail is common equipment in orthopedics, the fracture part of the bone of a patient is fixedly connected through fixation, then the bone at the fracture part is made to grow again in an auxiliary treatment and human body self-healing mode, and then the bone nail is taken out of the bone by using the nail taking device in an operation mode, so that a complete bone nail kit can be used, but the existing similar equipment still has problems in actual use;

for example, chinese patent CN201910663843.2 discloses a special screw extractor combined mechanism for orthopedics department, which is characterized in that a screw thread is arranged outside a steel nail cap of a steel nail, a nail extracting tube is arranged inside the nail extractor, a screw thread corresponding to the outside of the steel nail cap is arranged inside the nail extracting tube, and then a motor is arranged, when the motor works, the motor rotates to drive the nail extracting tube connected with the motor to rotate, so that the nail extracting tube is easily sleeved outside the steel nail cap; the direction of the thread outside the steel nail head is opposite to that of the thread of the steel nail cap, when the steel nail cap is rotated into the nail taking pipe, the more the steel nail is rotated, the more the steel nail is easily driven to be taken out, and the nail taking work is facilitated; then set up the magnetic force room in getting the nail pipe again, can adsorb the steel nail through the electro-magnet of magnetic force indoor portion, can be in getting the nail pipe with the steel nail rotation advance, strengthen the stability of steel nail in getting the nail pipe through the electro-magnet, and then can conveniently take out the steel nail:

although it can take out the bone nail through the mode of screw thread rotation, when in actual use, because the bone nail is after installing into bone inside, its part that exposes in the bone outer end still can be wrapped up by the human other skin flesh tissue of operation completion after, therefore above-mentioned technical scheme is very unreasonable with the remaining of the big section of bone nail structure of screw thread structure outside the bone region, very influence the normal operating of other tissues, even for dismantling the connection between steel nail cap and the steel nail, before taking out the bone nail, a large amount of human tissues remain at the exposure of bone nail and spread the growth, can cause very big influence, by a wide margin the increase operating time to installation work.

Disclosure of Invention

The invention aims to provide an orthopedic bone nail kit, which aims to solve the problems that although the bone nail can be taken out in a threaded rotation mode in the background technology, in actual use, because the part of the bone nail exposed at the outer end of the bone is still wrapped by other skin and flesh tissues of a human body after operation is finished after the bone nail is installed in the bone, the large section of the bone nail structure with the threaded structure is unreasonably reserved in the area outside the bone, the normal operation of other tissues is affected, even if the steel nail cap and the steel nail are detachably connected, a large amount of human tissues are remained and overgrow at the exposed part of the bone nail before the bone nail is taken out, the installation work is greatly affected, and the operation time is greatly prolonged.

In order to achieve the purpose, the invention provides the following technical scheme: the bone screw kit for orthopedics comprises a bone screw body and a screw taking device, the bone screw kit comprises the bone screw body and the screw taking device, a first thread is arranged on the surface of the bone screw body, a bone screw head is arranged at the top end of the bone screw body, the bone screw body is connected with an inner core, a second thread is arranged on the outer surface of the inner core, the trend of the second thread is opposite to that of the first thread, the inner core is vertically and slidably connected in a chute, the chute is vertically arranged in the bone screw body, the top end of the chute is communicated with an opening at the center of the bone screw head, a magnetic block is arranged at the bottom end of the chute, the top end of the magnetic block and the lower end face of the magnetic block arranged at the bottom end of the sliding block are in mutual adsorption mode, a containing groove is arranged in the bone screw head, the aperture of the containing groove is larger than the diameter length of the inner core, a, the sealing sheet covers the accommodating groove, the sealing sheet and the inner core are in threaded detachable connection, at least two elastic areas are arranged on the sealing sheet and fixedly connected with the sealing sheet, and the diameter length of the bone nail head is smaller than that of an opening at the bottom end of the nail extractor;

get the top outside of nail ware and install the handle, and the inside of getting the nail ware is provided with gets a nail section of thick bamboo to the outer wall of getting a nail section of thick bamboo is threaded connection with the inner wall of getting the nail ware, and gets a nail section of thick bamboo and get the nail ware and be coaxial line distribution.

Preferably, the sliding block is fixedly installed at the bottom end of the inner core, the sliding block and the sliding groove form a sliding connection structure, and the cross sections of the sliding block and the sliding groove are both square structures.

Preferably, the nail taking barrel is internally provided with a core pulling barrel which is rotatably connected with the nail taking barrel, the inner diameter of the core pulling barrel is matched with the outer diameter of the inner core, and the core pulling barrel is in threaded connection with the inner core.

Preferably, the core pulling barrel is connected with the connecting piece, the bottom end of the core pulling barrel protrudes out of the plane of the bottom opening of the nail extractor in the initial state, the outer diameter of the core pulling barrel is matched with the accommodating groove, and the vertical barrel is installed at the center of the top wall of the core pulling barrel.

Preferably, the connecting piece comprises a bottom plate, a connecting column and a top plate, the bottom plate is positioned in the upper half section of the inner part of the core-pulling barrel, the bottom end of the bottom plate is fixedly connected with the bottom end of the connecting column, and the connecting column is vertically connected to the top wall of the core-pulling barrel in a sliding mode through a spring.

Preferably, the top of spliced pole and the lower terminal surface fixed connection of roof, and the roof is located the first half section of the inside of getting a nail section of thick bamboo to roof center department is run through by a vertical cylinder, and both are swing joint simultaneously, 3 kellies at most are installed on the top of roof, and the kellies is identical with the card hole, and the setting of card hole is on the top inner wall of getting a nail section of thick bamboo.

Preferably, the middle section bearing of the vertical cylinder is rotatably arranged on the top wall of the nail taking cylinder, the vertical cylinder is connected with the motor through a motor shaft, and the motor is arranged inside the nail taking device.

Preferably, the vertical cylinder and the motor shaft form a vertical sliding connection structure, and the section of the joint of the vertical cylinder and the motor shaft is of a square structure.

Compared with the prior art, the invention has the beneficial effects that: according to the bone nail kit for orthopedics department, the bone nail body adopts an inner-outer double-layer structure, the bone nail can be conveniently and quickly dismantled by matching with the use of the nail extractor after bone tissues grow completely by arranging the telescopic inner core, and the bone nail body cannot cause adverse effects on the operation of other tissues of a human body during the healing period;

1. the inner core capable of sliding up and down is used in the bone nail, on one hand, when the inner core is fixed, the mutual adsorption of the magnets can ensure that the inner core cannot move out randomly in the bone nail, the sliding arrangement of the inner core cannot influence the normal life of a patient after a patient installs the bone nail, and the inner core cannot influence the skin and flesh vascular tissues of a human body in a state of protruding the outer end of the bone nail, on the other hand, the second thread arranged on the inner core facilitates the stable connection of the nail extractor and the inner core, and simultaneously, under the condition of ensuring that the motor and the motor shaft are not changed in rotation, the inner core can be directly extracted from the inside of the bone nail in a rotating and spiral transmission mode and the bone nail body can be sequentially extracted from the bone tissues, so that the design is more reasonable, the sealing sheet can be used for sealing the containing groove on one hand, and the sealing sheet can be convenient for the disassembly of subsequent medical personnel, the connection between the inner core and the core-pulling barrel is not affected;

2. the core-pulling barrel is structurally designed, so that the motor can be directly pulled out of the sliding groove under the condition that the inner core rotates under the action of the thread transmission of the motor shaft and the vertical barrel and the thread structure on the outer surface of the inner core, medical personnel are not required to manually pull out the inner core, the smooth operation process is prevented from being delayed, meanwhile, the nail-taking barrel and the accommodating tank are matched for use, the top end of the nail-taking barrel is directly matched with the accommodating tank when the medical personnel take nails, the inner core is not required to be pulled out for a certain distance and then is manually connected with the core-pulling barrel, and the core-pulling operation can be directly carried out by placing and rotating;

further, the use of connecting piece, make the inner core after appointed length is taken out, can extrude the bottom plate automatically, spliced pole and roof drive the removal, thereby utilize the identical core section of thick bamboo of taking out of card pole and card hole and get the state that a nail section of thick bamboo can be in relative fixed connection, make the continuous operation of motor can take out the screw with the bone nail body from the bone tissue, and the medical personnel of operation itself need not remove according to the length of bone nail and get the nail ware, compare conventional equipment, the messenger gets the nail operation and gets the state of nail ware more stable, avoid causing secondary damage to bone tissue.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the bone screw body according to the present invention;

FIG. 3 is a schematic top view of the bone screw body according to the present invention;

FIG. 4 is a schematic structural view of a front section of the nail extractor of the present invention;

FIG. 5 is a schematic view of a connector structure according to the present invention;

FIG. 6 is a schematic bottom view of the staple cartridge of the present invention;

FIG. 7 is a schematic view of a core pulling structure of the present invention;

FIG. 8 is a schematic view of the upward movement structure of the connector of the present invention;

FIG. 9 is a schematic view of the staple removing structure of the present invention.

In the figure: 1. a bone nail body; 11. a first thread; 12. a bone nail head; 13. an inner core; 14. a second thread; 15. a chute; 16. a slider; 17. a magnetic block; 18. sealing the sheet; 19. accommodating grooves; 110. an elastic region; 2. a nail extractor; 21. a handle; 22. taking a nail barrel; 23. a core-pulling cylinder; 24. a connecting member; 241. a base plate; 242. connecting columns; 243. a top plate; 244. a spring; 245. a clamping rod; 246. a clamping hole; 25. a vertical cylinder; 26. a motor shaft; 27. an electric motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a bone nail kit for orthopedics department comprises a bone nail body 1, first threads 11, a bone nail head 12, an inner core 13, second threads 14, a sliding groove 15, a sliding block 16, a magnetic block 17, a sealing sheet 18, a containing groove 19, an elastic area 110, a nail extractor 2, a handle 21, a nail extracting barrel 22, a core pulling barrel 23, a connecting piece 24, a bottom plate 241, a connecting column 242, a top plate 243, a spring 244, a clamping rod 245, a clamping hole 246, a vertical barrel 25, a motor shaft 26 and a motor 27, the bone nail kit comprises the bone nail body 1 and the nail extractor 2, the first threads 11 are arranged on the surface of the bone nail body 1, a bone nail head 12 is arranged at the top end of the bone nail body 1, the bone nail body 1 is connected with the inner core 13, the second threads 14 are arranged on the outer surface of the inner core 13, the trend of the second threads 14 is opposite to the trend of the threads of the first threads 11, the inner core 13 is vertically connected in the sliding groove 15 in a sliding manner, the, the top end of the sliding chute 15 is communicated with the opening at the center of the bone nail head 12, the bottom end of the sliding chute 15 is provided with a magnetic block 17, the top end of the magnetic block 17 and the lower end face of the magnetic block 17 arranged at the bottom end of the sliding block 16 are arranged in a mutually adsorbing manner, the bone nail head 12 is provided with an accommodating groove 19, the aperture of the accommodating groove 19 is larger than the diameter length of the inner core 13, the top end of the inner core 13 is provided with a sealing sheet 18, the sealing sheet 18 covers the accommodating groove 19, the sealing sheet 18 and the inner core 13 are in threaded detachable connection, the sealing sheet 18 is provided with an elastic area 110, at least two elastic areas 110 are arranged and fixedly connected with the sealing sheet 18, the diameter length of the bone nail head 12 is smaller than the opening diameter length at the bottom end of the nail taking device 2, the bone nail body 1 has no great difference compared with a common bone nail in an initial state, therefore, when the bone nail body 1 is installed, after the bone nail body 1 is installed, when the bone nail head 12 is exposed, firstly, the elastic area 110 shown in fig. 3 is pressed, and after the elastic area 110 is deformed, two operable concave areas are formed in the side areas of the sealing sheet 18, medical personnel can slightly rotate the sealing sheet 18 through the concave areas by using a conventional tool or directly and manually, and after the sealing sheet is completely taken out, the nail taking device 2 can be used for removing the whole bone nail body 1;

the outer side of the top end of the nail extractor 2 is provided with a handle 21, the nail extractor 2 is internally provided with a nail extracting barrel 22, the outer wall of the nail extracting barrel 22 is in threaded connection with the inner wall of the nail extractor 2, the nail extracting barrel 22 and the nail extractor 2 are distributed coaxially, a sliding block 16 is fixedly arranged at the bottom end of an inner core 13, the sliding block 16 and a sliding chute 15 form a sliding connection structure, the cross sections of the sliding block 16 and the sliding chute 15 are both in a square structure, the nail extracting barrel 22 is internally provided with a core extracting barrel 23 which is in rotary connection, the inner diameter of the core extracting barrel 23 is matched with the outer diameter of the inner core 13, the core extracting barrel 23 and the sliding chute 15 are in threaded connection, the core extracting barrel 23 is connected with a connecting piece 24, the bottom end of the core extracting barrel 23 protrudes out of the plane of the opening at the bottom end of the nail extractor 2 in an initial state, the outer diameter of the core extracting barrel 23 is matched with an, medical personnel can directly laminate nail extractor 2 with bone nail head 12 in the bone nail body 1 according to the direction shown in the drawing, this moment because the bottom of knockout core section of thick bamboo 23 is in the bulge state, knockout core section of thick bamboo 23 can directly enter into holding tank 19 and contact with the top of inner core 13, the operation of motor 27 can drive knockout core section of thick bamboo 23 synchronous revolution through motor shaft 26 and vertical cylinder 25, under the screw drive effect of knockout core section of thick bamboo 23 inner wall and inner core 13 outer wall second screw 14, and under the limiting displacement of square slider 16 and spout 15, inner core 13 can be gradually to the inside removal of knockout core section of thick bamboo 23, knockout core section of thick bamboo 23 also can rotate in getting nail section of thick bamboo 22, and inner core 13 can not rotate this moment.

The connecting piece 24 comprises a bottom plate 241, a connecting column 242 and a top plate 243, the bottom plate 241 is located in the upper half section of the interior of the core-pulling barrel 23, the bottom ends of the bottom plate 241 and the connecting column 242 are fixedly connected, the connecting column 242 is vertically connected to the top wall of the core-pulling barrel 23 in a sliding manner through a spring 244, the top end of the connecting column 242 is fixedly connected with the lower end face of the top plate 243, the top plate 243 is located in the upper half section of the interior of the core-pulling barrel 22, the top plate 243 is penetrated through by the vertical barrel 25 and is movably connected with the vertical barrel, at most 3 clamping rods 245 are installed at the top end of the top plate 243, the clamping rods 245 are matched with the clamping holes 246, the clamping holes 246 are arranged on the inner wall of the top end of the core-pulling barrel 22, when the core 13 is pulled out, the top plate 243 can also move upwards to the maximum distance, therefore the clamping rods 245 arranged on the top plate 243 can also be in a mutually matched, at this time, when the core-pulling cylinder 23 is in a rotating state again, not only the inner core 13 but also the nail-taking cylinder 22 can rotate synchronously, and under the limiting action of the square sliding block 16 and the sliding groove 15, the rotation of the inner core 13 can drive the bone nail body 1 to synchronously rotate in the bone tissue, and when the nail-taking cylinder 22 is in the rotating state, the bone nail body 1 can synchronously move to the inside of the nail-taking device 2 under the driving of the inner core 13 and the rotating state under the screw thread transmission action of the outer wall of the nail-taking device 2, so that as shown in fig. 9, when the nail-taking cylinder 22 moves upwards, the bone nail body 1 can also be driven by the inner core 13 and synchronously move to the inside of the nail-taking device 2 under the rotating state, and when the nail-taking cylinder 22 moves upwards to the maximum distance, the bone nail can also be correspondingly and completely taken out.

The middle section bearing of the vertical cylinder 25 is rotatably arranged on the top wall of the nail taking cylinder 22, the vertical cylinder 25 is connected with the motor 27 through the motor shaft 26, the motor 27 is arranged inside the nail taking device 2, the vertical cylinder 25 and the motor shaft 26 form a vertical sliding connection structure, the cross section of the joint of the vertical cylinder 25 and the motor shaft 26 is of a square structure, and the square sliding connection structure design of the vertical cylinder 25 and the motor shaft 26 can ensure that the vertical cylinder 25 can move along the distribution direction of the motor shaft 26 when the motor shaft 26 drives the vertical cylinder 25 to synchronously rotate.

The working principle is as follows: as shown in fig. 2, the bone nail body 1 has no great difference compared with a common bone nail in an initial state, so that when the bone nail body 1 is installed, a medical worker can install the bone nail body 1 according to the existing general rules and equipment without additionally developing equipment to perform the fixed installation operation, after the installation is finished, when the bone nail body 1 needs to be removed, firstly, when the bone nail head 12 is exposed outside, firstly, the elastic area 110 shown in fig. 3 is pressed, after the elastic area 110 is deformed, two operable concave areas are formed in the side area of the sealing sheet 18, the medical worker can slightly rotate the sealing sheet 18 through the concave areas by using a conventional tool or directly manually, and after the sealing sheet is completely removed, the nail remover 2 can be used for removing the whole bone nail body 1;

as shown in fig. 2 and fig. 4, the medical staff can directly attach the nail extractor 2 to the bone nail head 12 in the bone nail body 1 according to the direction shown in the figure, at this time, because the bottom end of the core pulling cylinder 23 is in a convex state, the core pulling cylinder 23 can directly enter the accommodating groove 19 and contact with the top end of the inner core 13, the operation of the motor 27 can drive the core pulling cylinder 23 to synchronously rotate through the motor shaft 26 and the vertical cylinder 25, under the screw transmission action of the second screw 14 on the inner wall of the core pulling cylinder 23 and the outer wall of the inner core 13, and under the limiting action of the square slider 16 and the sliding groove 15, the inner core 13 can gradually move towards the inside of the core pulling cylinder 23, the core pulling cylinder 23 can also rotate in the nail extracting cylinder 22, and the inner core 13 cannot rotate at this time, as shown in fig. 7 and fig. 8, after the inner core 13 moves upwards for a certain distance, the top end of the inner core 13 can contact with the bottom plate, the bottom plate 241 will move upwards correspondingly and drive the top plate 243 to move upwards synchronously through the connecting post 242, when the inner core 13 is drawn out to the maximum length, the top plate 243 will move upwards to the maximum distance, so the clamping rod 245 on the top plate 243 will be in the state of being matched with the clamping hole 246, so the core-pulling cylinder 23 and the nail-taking cylinder 22 will be in the temporary locking state, at this time, when the core-pulling cylinder 23 is in the rotating state again, not only the inner core 13 will be in the rotating state, but also the nail-taking cylinder 22 will rotate synchronously, under the limit action of the square slide block 16 and the slide slot 15, the rotation of the inner core 13 will drive the bone nail body 1 to rotate synchronously in the bone tissue, and when the nail-taking cylinder 22 is in the rotating state, the nail-taking cylinder 22 will move synchronously under the screw transmission action of the outer wall and the inner wall of the nail-taking device 2, so as shown in fig. 9, when the nail-taking cylinder 22 moves upwards, the bone nail body 1 will be driven by, Move to the inside of taking out nail ware 2 under rotatory state in step, consequently, when getting nail section of thick bamboo 22 and upwards moving to the maximum distance, the bone nail also can be correspondingly taken out completely from the bone tissue, consequently, in the in-process of getting the nail, medical personnel need not to remove repeatedly and get nail ware 2 and cooperate the exposure length change of bone nail body 1 when taking out, only need before getting the nail keep getting the coaxial line distribution of nail ware 2 and bone nail body 1 can, as to whether manual keeping or use the supporting structure to keep, this for prior art consequently does not describe further.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an orthopedics is with bone nail external member, includes bone nail body (1) and gets nail ware (2), its characterized in that: the bone nail kit comprises a bone nail body (1) and a nail taking device (2), wherein a first thread (11) is arranged on the surface of the bone nail body (1), a bone nail head (12) is arranged at the top end of the bone nail body (1), the bone nail body (1) is connected with an inner core (13), a second thread (14) is arranged on the outer surface of the inner core (13), the trend of the second thread (14) and the trend of the thread are opposite to the trend of the thread of the first thread (11), the inner core (13) is vertically and slidably connected in a sliding chute (15), the sliding chute (15) is vertically arranged in the bone nail body (1), the top end of the sliding chute (15) is communicated with an opening hole in the upper center of the bone nail head (12), a magnetic block (17) is arranged at the bottom end of the sliding chute (15), and the top end of the magnetic block (17) and the lower end face of the magnetic block (17) arranged at the bottom end of the sliding block (16, the bone nail head (12) is provided with an accommodating groove (19), the aperture of the accommodating groove (19) is larger than the diameter length of the inner core (13), the top end of the inner core (13) is provided with a sealing sheet (18), the sealing sheet (18) covers the accommodating groove (19), the sealing sheet (18) and the inner core (13) are in threaded detachable connection, the sealing sheet (18) is provided with at least two elastic zones (110), the elastic zones (110) are fixedly connected with the sealing sheet (18), and the diameter length of the bone nail head (12) is smaller than the diameter length of an opening at the bottom end of the nail extractor (2);

get the top outside of nail ware (2) and install handle (21), and the inside of getting nail ware (2) is provided with gets a nail section of thick bamboo (22), and the outer wall of getting a nail section of thick bamboo (22) and the inner wall of getting nail ware (2) be threaded connection, and get a nail section of thick bamboo (22) and get nail ware (2) and be the coaxial line distribution.

2. The bone screw kit for orthopedics department according to claim 1, characterized in that: the sliding block (16) is fixedly installed at the bottom end of the inner core (13), the sliding block (16) and the sliding groove (15) form a sliding connection structure, and the cross sections of the sliding block (16) and the sliding groove (15) are both square structures.

3. The bone screw kit for orthopedics department according to claim 1, characterized in that: the nail taking barrel (22) is internally provided with a core pulling barrel (23) which is in rotary connection, the inner diameter of the core pulling barrel (23) is matched with the outer diameter of the inner core (13), and the core pulling barrel and the inner core are in threaded connection.

4. The bone screw kit for orthopedics department according to claim 3, characterized in that: the core-pulling barrel (23) is connected with the connecting piece (24), the bottom end of the core-pulling barrel (23) protrudes out of the plane of the opening at the bottom end of the nail extractor (2) in the initial state, the outer diameter of the core-pulling barrel (23) is matched with the accommodating groove (19), and the center of the top wall of the core-pulling barrel (23) is provided with the vertical barrel (25).

5. The bone screw kit for orthopedics department according to claim 4, characterized in that: the connecting piece (24) comprises a bottom plate (241), a connecting column (242) and a top plate (243), the bottom plate (241) is located in the upper half section of the inner part of the core-pulling barrel (23), the bottom ends of the bottom plate (241) and the connecting column (242) are fixedly connected, and the connecting column (242) is vertically connected to the top wall of the core-pulling barrel (23) in a sliding mode through a spring (244).

6. The bone screw kit for orthopedics department according to claim 5, characterized in that: the top of spliced pole (242) and the lower terminal surface fixed connection of roof (243), and roof (243) are located the inside first half section of a section of thick bamboo (22) of getting, and roof (243) center department is run through by vertical cylinder (25), and both are swing joint simultaneously, 3 card poles (245) at most are installed to the top of roof (243), and card pole (245) are identical with card hole (246), and card hole (246) set up on the top inner wall of getting a nail section of thick bamboo (22).

7. The bone screw kit for orthopedics department according to claim 4, characterized in that: the middle section bearing of the vertical cylinder (25) is rotatably arranged on the top wall of the nail taking cylinder (22), the vertical cylinder (25) is connected with the motor (27) through the motor shaft (26), and the motor (27) is arranged in the nail taking device (2).

8. The bone screw kit for orthopedics according to claim 7, characterized in that: the vertical cylinder (25) and the motor shaft (26) form a vertical sliding connection structure, and the section of the joint of the vertical cylinder and the motor shaft is of a square structure.