CN112618115A

CN112618115A - Tibial plateau holder

Info

Publication number: CN112618115A
Application number: CN202011431826.5A
Authority: CN
Inventors: 解凤宝; 史春宝; 韩川; 郝孟娟
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-04-09
Anticipated expiration: 2040-12-07
Also published as: CN112618115B

Abstract

The application relates to a tibial plateau holder, which comprises a mounting block, a locker and a driving piece; installing a block: one end surface forms an adapting surface adapted to the inner edge of the contour of the top surface of the tibial plateau; a locking device: the locking device is connected to the mounting block in a sliding manner, a clamping surface matched with the inner edge of the profile of the top surface of the tibial platform is arranged on the locking device, and the clamping surface and the matching surface are coplanar; a driving part: fixed connection is on the installation piece, with locker fixed connection, orders about the locker and slides. This application has the effect that is the even atress of tibial plateau support.

Description

Tibial plateau holder

Technical Field

The application relates to the field of medical equipment, in particular to a tibial plateau holder.

Background

The knee joint is one of the most complex joints of the human body and is also an important weight bearing joint of the lower limbs of the human body. Due to accidents, bad exercise habits, diseases and the like, knee joints of many patients have injuries of different degrees, and the lives of the patients are extremely inconvenient. Wherein, the knee joint function of part of patients can be recovered by knee joint replacement surgery. In knee joint replacement surgery, especially total knee joint replacement surgery, the knee joint prosthesis needs to be installed, the first step of installing the knee joint prosthesis is to install a tibial plateau support (shown in fig. 1), the tibial plateau support comprises a support body 1, an intramedullary column 11 and a support body top surface inner edge 12 used for accommodating the bottom of a tibial plateau pad, wherein an inward concave avoiding groove 13 is further arranged on the side wall of the support body and used for accommodating a posterior cruciate ligament after installation.

The mode that the tibial plateau held in the palm is commonly used at present relies on the operator to operate with bare-handed, lays the false body to increase separator on the tibial plateau holds in the palm, be used for preventing to hit the damage that causes the tibial plateau to hold in the palm after the direct and tibial plateau of beating apparatus holds in the palm contacts.

To the correlation technique among the above-mentioned, the inventor thinks, current separator keeps through artifical handheld mode with the tibial plateau holds in the palm between fixed, separator receives the influence one side perk of people's activity or takes place other can not completely with the tibial plateau and hold in the palm the laminating condition, and job stabilization nature is relatively poor, and the atress direction of tibial plateau holds in the palm is difficult to control, misplaces when leading to prosthetic implantation easily, takes place the condition of shin bone fracture even.

Disclosure of Invention

In order to make the even atress that the tibial plateau held can be stable, this application provides a tibial plateau holds ware.

The application provides a tibial plateau holds in palm holder adopts following technical scheme:

a tibial plateau holder comprises a mounting block, a locker and a driving piece;

installing a block: one end surface forms an adapting surface adapted to the inner edge of the contour of the top surface of the tibial plateau;

a locking device: the locking device is connected to the mounting block in a sliding manner, a clamping surface matched with the inner edge of the profile of the top surface of the tibial platform is arranged on the locking device, and the clamping surface and the matching surface are coplanar;

a driving part: fixed connection is on the installation piece, with locker fixed connection, orders about the locker and slides.

Through adopting above-mentioned technical scheme, when the staff installs the tibial plateau support, earlier adaptation face butt on the installation piece is on tibial plateau support top surface, and make the edge of adaptation face be located the interior edge of tibial plateau support top surface and enclose into regional inside, then make the locker slide for the installation piece through the driving piece, and make the joint face support tightly all the time on the top surface of tibial plateau support, make the edge of joint face be located the interior edge of tibial plateau support top surface and enclose into regional inside all the time simultaneously, when the edge of joint face and the edge of adaptation face butt respectively along different positions in tibial plateau support top surface, the locker blocks the tibial plateau support with the installation piece, and joint face and the complete top surface laminating with the tibial plateau support of adaptation face, next, the staff only need to the installation piece application of force and just can realize the installation of tibial plateau support.

Optionally, the driving piece includes a threaded rod in threaded connection with the mounting block, the threaded rod is connected with the locker in a rotating manner, a limiting part is arranged on the threaded rod, and the locker is located between the limiting part and the mounting block.

Through adopting above-mentioned technical scheme, during the use, the staff can be through making joint face butt on the top surface that the tibial plateau held in the palm to the mode of rotating the threaded rod makes the locker not rotate along with the threaded rod together under the restriction that the tibial plateau held in the palm, but along with the removal of the relative installation piece of threaded rod together removes, finally realizes the joint that holds in the palm to the tibial plateau. Simple structure and convenient maintenance.

Optionally, the limiting member includes a nut fixedly connected to an end of the threaded rod.

Through adopting above-mentioned technical scheme, the setting of nut can be with the tip cladding of the comparatively sharp threaded rod in edge, has reduced the possibility that the locker drops from the threaded rod, has reduced the possibility that the human body led to the fact the damage after the threaded rod tip touches the human body simultaneously.

Optionally, the mounting block is connected with a guide rod in a sliding manner, the guide rod is parallel to the threaded rod, and the guide rod is fixedly connected with the locker.

Through adopting above-mentioned technical scheme, the guide bar can exert spacing and guide effect to the locker for the process that the locker removed along with the threaded rod is more stable.

Optionally, the mounting block includes a connecting block and a striking head, the striking head is detachably connected with the connecting block, and the adaptive surface is arranged on the end surface of the striking head, which faces away from the connecting block.

Through adopting above-mentioned technical scheme, because the size specification that the tibial platform held in the palm has the multiple, so when the tibial platform of installation difference holds in the palm, can select the suitable head of hitting of size, make the head of hitting can be better with tibial platform support adaptation, realize more stable and quick centre gripping, improve the installation accuracy and the stability that the tibial platform held in the palm.

Optionally, the striking head is connected with the connecting block by a bolt.

Through adopting above-mentioned technical scheme, bolted connection's mode is simpler, stable, is convenient for the staff to the change of beating the head.

Optionally, the mounting block is fixedly connected with a handle, and the handle and the adapting surface are respectively arranged on two end surfaces of the mounting block, which are opposite to each other.

Through adopting above-mentioned technical scheme, the setting of handle is convenient for the staff to support the installation piece that is connected with the tibial plateau and holds in the palm, and when holding in the palm the application of force to the tibial plateau, the staff can install the tibial plateau support through the mode of pounding the handle, and staff's activity space is bigger, judges more easily simultaneously whether the installation angle that the tibial plateau held in the palm accords with the standard.

Optionally, an installation groove is formed in the end face, opposite to the adaptive surface, of the installation block, and one end of the handle is inserted into the installation groove and fixed through a pin.

By adopting the technical scheme, the handle is directly contacted with the striking instrument and is impacted by the striking instrument, so that the handle is more easily damaged and more frequently replaced; simultaneously when the installation tibial plateau holds in the palm, dismantling of handle can make things convenient for the staff installation more, consequently selects to realize being connected between handle and the connecting block through the pin.

Optionally, the bottom profile of the engagement surface is adapted to the concave portion of the tibial plateau support top surface cruciate ligament avoidance groove, and the top profile of the engagement surface is adapted to the top surface inner edge of the tibial plateau support.

Through adopting above-mentioned technical scheme, can make joint face can be the contact of bigger area with the tibial plateau support, can restrict the relative rotation between tibial plateau support and the locker simultaneously for the relative motion state between tibial plateau support and the installation piece is more stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when a worker installs the tibial platform support, the adaptive surface on the installation block is abutted against the top surface of the tibial platform support, the edge of the adaptive surface is positioned in the inner edge of the top surface of the tibial platform support to form an area, then the locker slides relative to the installation block through the driving piece, the clamping surface is always abutted against the top surface of the tibial platform support, meanwhile, the edge of the clamping surface is always positioned in the inner edge of the top surface of the tibial platform support to form the area, when the edge of the clamping surface and the edge of the adaptive surface are respectively abutted against different positions on the inner edge of the top surface of the tibial platform support, the locker and the installation block clamp the tibial platform support, the clamping surface and the adaptive surface are completely attached to the top surface of the tibial platform support, and then, the worker can install the tibial platform support only by applying force to the installation block;

2. because the tibial platform support has various dimensions, when different tibial platform supports are installed, the striking head with the proper dimension can be selected, so that the striking head can be better matched with the tibial platform support, more stable and faster clamping is realized, and the installation precision and stability of the tibial platform support are improved;

3. can make the joint face can contact with the tibial plateau support by a large scale, can restrict the relative rotation between tibial plateau support and the locker simultaneously for the relative motion state between tibial plateau support and the installation piece is more stable.

Drawings

FIG. 1 is a background art drawing;

FIG. 2 is an isometric view of the embodiment;

FIG. 3 is an exploded view with the handle omitted;

fig. 4 is a schematic diagram illustrating the connection relationship between the tibial plateau tray and the striking head and the locker in the embodiment.

Description of reference numerals: 1. a support body; 11. an intramedullary rod; 12. an inner edge; 13. an avoidance groove; 2. mounting blocks; 21. connecting blocks; 22. a striking head; 23. an adaptation surface; 24. a bump; 25. mounting grooves; 3. a locker; 31. a clamping surface; 32. a guide bar; 4. a drive member; 41. a threaded rod; 42. a locking member; 43. a nut; 5. a pin; 6. a handle.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a tibial plateau holder. Referring to fig. 1 and 2, the tibial plateau holder includes a mounting block 2, a locker 3, a driving member 4, and a handle 6. An end face of the mounting block 2 is integrally formed with a protruding block 24 protruding outwards, a mounting groove 25 used for accommodating the handle 6 is formed in the protruding block 24, one end of the handle 6 is inserted into the mounting groove 25 and is in interference fit with the mounting groove 25, meanwhile, a pin 5 penetrating through the protruding block 24 and the handle 6 is arranged on the protruding block 24 and is used for further fixing the handle 6, and the length direction of the handle 6 is arranged along the length direction of the mounting block 2.

The mounting block 2 comprises a connecting block 21 and a striking head 22 connected to the connecting block 21 through two bolts, wherein a projection 24 connected with the handle 6 is formed on one end face of the connecting block 21, and the striking head 22 is positioned on the other end face of the connecting block 21 and completely attached to the end face. In order to enable the striking head 22 to be stably arranged in the region enclosed by the inner edge 12 of the bracket body 1, the side wall of the striking head 22, which faces away from the connecting block 21, is set to be an adapting surface 23, the shape of the edge of the top side of the adapting surface 23 is adapted to the shape of the inner edge 12 of the position, facing the avoidance groove 13, of the top surface of the tibial plateau bracket, and the adapting surface 23 can be completely attached to the top surface of the bracket body 1 enclosed by the inner edge 12 to be used as a structure for fixing the tibial plateau bracket.

Referring to fig. 1 and 3, the connecting block 21 and the side wall of the striking head 22 are both provided with a longitudinal cavity for accommodating the locker 3.

The locking device 3 in this embodiment is a plate-shaped structure with a bending part, the end of the locking device 3 bends towards the direction away from the connecting block 21 and is perpendicular to the horizontal part, a clamping surface 31 matched with the contour of the inner edge 12 of the tibial platform support top surface avoiding groove 13 is formed, a through groove for accommodating the inner edge 12 of the tibial platform support upper avoiding groove 13 is formed in the clamping surface 31, and the clamping surface 31 is coplanar with the adapting surface 23. The engagement surface 31 serves as another structure for cooperating with the mating surface 23 to secure the tibial plateau tray.

The horizontal part of the locker 3 is fixedly connected with a vertically arranged guide rod 32, the guide rod 32 is inserted into the connecting block 21 and can freely slide along the length direction of the guide rod, and the guide rod 32 and the connecting block are in transition fit for playing a guide effect on the movement of the locker 3. The driving member 4 in this embodiment is a threaded rod 41, the threaded rod 41 is in threaded connection with the connecting block 21 and penetrates through the connecting block 21 along the length direction of the guide rod 32, the thread tail end of the threaded rod 41 is arranged in a reducing shape, the locker 3 is sleeved on the reducing portion and can rotate freely by taking the threaded rod 41 as a rotating shaft, and the thread tail end of the threaded rod 41 extends out of the locker 3 and is in threaded connection with a nut 43.

Referring to fig. 3 and 4, when in use, a worker abuts the adapting surface 23 in a region enclosed by the inner edge 12 of the support body 1, so that the top side of the adapting surface 23 abuts against the side wall of the inner edge 12 at the position opposite to the avoiding groove 13, the locker 3 can slide along the advancing direction of the threaded rod 41 relative to the connecting block 21 under the limiting and guiding effects of the guide rod 32 by rotating the threaded rod 41 until the bottom side of the clamping surface 31 abuts against the side wall of the inner edge 12 at the position of the avoiding groove 13, and at the moment, the top side of the adapting surface 23 abuts against the side walls of the inner edges 12 at multiple positions of the top surface of the support body 1 with the bottom side of the clamping surface 31, the top surface of the support body 1 can be uniformly stressed, and the possibility of stress direction change of the support body 1 caused by non-abutting between the top surface of the support body 1 and the.

The implementation principle of the tibial plateau holder in the embodiment of the application is as follows: after the support body 1 is fixed through the striking head 22 and the locker 3, force is applied to the handle 6 through hammering, the force is transmitted to the support body 1 through the connecting block 21 and the striking head 22, and the striking head 22 and the locker 3 respectively apply opposite acting force to the upper edge 12 of the support body 1, so that a gap is difficult to be generated between the support body 1 and the adapting surface 23, a gap is difficult to be generated between the support body 1 and the clamping surface 31, the direction of force finally transmitted to the top surface of the support body 1 is difficult to change, and the possibility of operation failure caused by the change of the force direction of the support body 1 is reduced. In addition, because the handle 6 is hit for a long time, the handle 6 can be replaced by removing the pin 5, pulling the handle 6 out of the mounting groove 25, replacing the handle with a new one, and fixing the handle with the pin 5 again.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A tibial plateau holder, comprising: comprises a mounting block (2), a locker (3) and a driving piece (4);

mounting block (2): one end surface forms an adapting surface (23) which is adapted to the inner edge of the outline of the top surface of the tibial plateau;

locking device (3): the locking device is connected to the mounting block (2) in a sliding manner, a clamping surface (31) matched with the inner edge of the profile of the top surface of the tibial platform is arranged on the locking device (3), and the clamping surface (31) and the matching surface (23) are coplanar;

drive member (4): the fixing device is fixedly connected to the mounting block (2) and fixedly connected with the locking device (3) to drive the locking device (3) to slide.

2. The tibial plateau holder of claim 1, wherein: the driving piece (4) comprises a threaded rod (41) which is in threaded connection with the mounting block (2), the threaded rod (41) is rotatably connected with the locker (3), a limiting part is arranged on the threaded rod (41), and the locker (3) is located between the limiting part and the mounting block (2).

3. The tibial plateau holder of claim 2, wherein: the limiting part comprises a nut (43) fixedly connected to the end of the threaded rod (41).

4. The tibial plateau holder of claim 1, wherein: the mounting block (2) is connected with a guide rod (32) in a sliding mode, the guide rod (32) is parallel to the threaded rod (41), and the guide rod (32) is fixedly connected with the locker (3).

5. The tibial plateau holder of claim 1, wherein: the installation block (2) comprises a connecting block (21) and a striking head (22), the striking head (22) is detachably connected with the connecting block (21), and an adaptive surface (23) is arranged on the end surface of the striking head (22) back to the connecting block (21).

6. The tibial plateau holder of claim 5, wherein: the striking head (22) is connected with the connecting block (21) through a bolt.

7. The tibial plateau holder of claim 1, wherein: fixedly connected with handle (6) on installation piece (2), handle (6) are located on two terminal surfaces that installation piece (2) carried on the back with adaptation face (23) branch.

8. The tibial plateau holder of claim 7, wherein: the end face, back to the adaptation face (23), of the installation block (2) is provided with an installation groove (25), and one end of the handle (6) is inserted into the installation groove (25) and fixed through the pin (5).

9. The tibial plateau holder of claim 1, wherein: the bottom profile of the clamping surface (31) is matched with the concave part of the tibial plateau top surface cruciate ligament avoiding groove, and the top profile of the matching surface (23) is matched with the top surface inner edge (12) of the tibial plateau support.