CN213665553U

CN213665553U - Acetabular bone file

Info

Publication number: CN213665553U
Application number: CN202022175601.XU
Authority: CN
Inventors: 解凤宝; 史春宝; 王金博; 郝孟娟
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-07-13
Anticipated expiration: 2030-09-28

Abstract

The application relates to an acetabular file, which comprises a file head and a support, wherein the file head is arranged in a hemispherical shell, and the support is arranged on the inner side of the file head; the file head is provided with a plurality of cutting edges which are divided into a plurality of groups, the cutting edges in each group are spirally arranged in an ascending manner at intervals from the bottom of the shell to the center of the top of the shell, the spiral directions of the plurality of groups of cutting edges are consistent, and the spiral direction of the cutting edges is the rotating direction of the file head; one side edge of the cutting edge, which deviates from the rotating direction of the file head, is set as a cutting edge for cutting the acetabulum, and the cutting edge faces to a position between two adjacent cutting edges in a group in front of the cutting edge. This application has the effect that improves the acetabular bone grinding precision.

Description

Acetabular bone file

Technical Field

The application relates to the field of medical equipment, in particular to an acetabular bone file.

Background

Acetabular rasps are among the necessary tools for hip replacement surgery and are primarily used to remove necrotic tissue from the acetabulum and to abrade the inner surface of the acetabular socket to facilitate installation of the artificial acetabulum.

At present, most of cutting edges on a file head of an acetabular file are uniformly distributed, and the inventor thinks that the file head is easy to deflect in the grinding process and has the defect of inaccurate grinding size.

SUMMERY OF THE UTILITY MODEL

In order to improve the grinding precision to the acetabulum, this application provides an acetabular bone file.

The application provides a technical scheme that an acetabular bone file adopts as follows:

an acetabulum file comprises a file head arranged in a hemispherical shell and a bracket arranged at the inner side of the file head; the file head is provided with a plurality of cutting edges which are divided into a plurality of groups, the cutting edges in each group are spirally arranged in an ascending manner at intervals from the bottom of the shell to the center of the top of the shell, the spiral directions of the plurality of groups of cutting edges are consistent, and the spiral direction of the cutting edges is the rotating direction of the file head; one side edge of the cutting edge, which deviates from the rotating direction of the file head, is set as a cutting edge for cutting the acetabulum, and the cutting edge faces to a position between two adjacent cutting edges in a group in front of the cutting edge.

By adopting the technical scheme, in the process of grinding the acetabulum by rotating the file head, the cutting edge faces to the rotating side of the file head to grind the acetabulum, and the ground waste scraps are discharged from the cutting edge; the cutting edges which are spirally raised are in the rotating process, each cutting edge can grind the interval between two adjacent cutting edges in the front group in the moving process, so that the grinding range is larger when the whole file head rotates, the stress is more uniform, and the grinding size is more accurate.

Optionally, the cutting edge is rectangular, and the blade edge is a long edge of the cutting edge.

Through adopting above-mentioned technical scheme, rectangular blade area is great to make the length of sword limit longer, intensity is better, difficult wearing and tearing.

Optionally, the edge is arranged in a zigzag manner.

Through adopting above-mentioned technical scheme, the sword limit of cockscomb structure is sharper, and the cutting effect is better, more is applicable to the harder patient of sclerotin.

Optionally, a positioning hole is further formed in the center of the top of the file head, and a positioning pin penetrates through the positioning hole.

Through adopting above-mentioned technical scheme, during the grinding, support the locating pin in the acetabulum, after the grinding, can form the setpoint in the acetabulum, change the acetabular bone file back, make the locating pin of next acetabular bone file support in the setpoint department equally, can guarantee that the position of both sides grinding is unanimous, make the doctor use the acetabular bone file more convenient.

Optionally, the cutting edge is arranged in a circular shape.

Through adopting above-mentioned technical scheme, circular shape blade area is little, and the corresponding blade quantity that can set up on the file head is just also more, applicable in the patient that the sclerotin is softer, epiphysis is more, and blade quantity increases, also is favorable to the chip removal, and the grinding precision is also higher.

Optionally, a protrusion protruding from inside to outside is arranged on one side of the cutting edge, which is away from the rotating direction of the file head, and the protrusion intersects with the cutting edge, so that the side edge of one side of the cutting edge is bent upwards to form a blade edge.

Through adopting above-mentioned technical scheme, the sword limit that the protruding form and blade cross formed is sharper, has improved the grinding precision to the acetabular bone simultaneously, has still improved the intensity of sword limit, makes the difficult wearing and tearing of sword limit, prolongs the life of acetabular bone file.

Optionally, the protrusion is spherically arranged.

Through adopting above-mentioned technical scheme, globular arch is processed more easily to overall strength is higher.

Optionally, the spiral lines of the plurality of groups of cutting edges are arranged discontinuously, and the cutting edges are not arranged at the broken positions of the file heads between the spiral lines.

Through adopting above-mentioned technical scheme, at file head rotation in-process, the position of not seting up the blade can play intermittent type's effect, forms interval grinding action to same position of acetabular bone, compares in lasting cutting action, and its cutting process is more smooth and easy, is difficult for appearing the dead phenomenon of rotation card.

Optionally, the support is including setting up the round platform and a plurality of the branch that sets firmly in round platform circumference at the first inboard of filing, and is a plurality of branch and round platform integrated into one piece, each one end and the first inside wall fixed connection of filing that the round platform was kept away from to branch.

Through adopting above-mentioned technical scheme, a plurality of branches are fixed the round platform in the first inboard of filing, both make things convenient for to install the file on the electric drill, have reduced the occupation space on the file again, improve the surface utilization of file head, can process more blades on the file head, can also improve the structural strength of whole file head to integrated into one piece's branch and round platform are compared in welding strength higher.

Optionally, the circular truncated cone is provided with a size mark.

By adopting the technical scheme, a doctor can conveniently and quickly find the acetabular file with the corresponding size.

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

1. by arranging the cutting edges and the cutting edges which are spirally arranged in an ascending manner, the grinding effective area of the acetabular file is larger in the rotating process, and the grinding precision of the acetabular is improved;

2. the cutting edge which is arranged in a rectangular shape has larger area, is beneficial to discharging waste scraps, and ensures that the length of the cutting edge is longer, the cutting edge is more sharp in a saw-toothed shape, the grinding efficiency is higher, and the cutting edge is suitable for patients with harder bone;

3. the cutting edges which are circularly arranged are more in number, the grinding precision and the grinding quality are higher, and the grinding device is suitable for patients with softer sclerotin.

Drawings

FIG. 1 is a schematic structural view of an acetabular file in embodiment 1 of the present application.

Fig. 2 is a schematic diagram showing the position of the holder.

Fig. 3 is an exploded view showing the connection relationship of the positioning pin and the positioning hole.

FIG. 4 is a schematic structural view of an acetabular file in embodiment 2 of the present application.

Description of reference numerals: 1. filing the head; 11. cutting edges; 12. a blade edge; 13. positioning holes; 14. a protrusion; 2. a support; 21. a circular truncated cone; 211. size marking; 22. a strut; 3. and a positioning pin.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an acetabular bone file.

Example 1

Referring to fig. 1 and 2, the acetabular file includes a file head 1 and a holder 2 provided on the file head 1; file head 1 is used for grinding the acetabulum, and file head 1 is hemispherical casing setting, with the shape looks adaptation of acetabulum nest, and support 2 is installed in the inboard of file head 1, and the doctor of being convenient for takes the acetabulum file, also conveniently is connected with the electric drill, makes the electric drill drive file head 1 rotatory.

Referring to fig. 1, a plurality of cutting edges 11 are formed on the file head 1, and for convenience of describing the distribution of the cutting edges 11 on the file head 1, it is assumed that a plurality of spiral lines spirally rising from the bottom of the file head 1 to the center of the top of the file head are arranged on the outer surface of the file head 1, the rotating directions of the spiral lines are consistent, and the spiral lines are uniformly distributed along the rotation axis of the file head 1; the plurality of cutting edges 11 are divided into groups with the same number as the spiral lines, the number of the cutting edges 11 in each group is also multiple, the number of the cutting edges 11 in the multiple groups is same, the cutting edges 11 in each group are distributed on the file head 1 along the spiral lines, namely, the cutting edges 11 in each group are arranged in a spiral ascending shape.

Referring to fig. 1, the number of the spiral lines and the number of the cutting edges 11 on each spiral line can be changed according to the radius size of the file head 1, the number of the spiral lines in the embodiment is three, and the number of the cutting edges 11 on each spiral line is four; the helix may be right-handed or left-handed, with a right-handed helix being used in this embodiment.

Referring to fig. 1, the rotation direction rising along the spiral line is the rotation direction of the rasp head 1, the side edge of one side of the cutting edge 11 departing from the rotation direction of the rasp head 1 is set as a cutting edge 12, the cutting edge 12 is used for cutting the acetabulum, when the rasp head 1 rotates to grind the acetabulum, the cutting edge 12 grinds the acetabulum towards the rotation side of the rasp head 1, and the ground waste scraps are discharged from the cutting edge 11; and the blade edge 12 faces the position between the two adjacent cutting edges 11 in the previous group and is arranged spirally, so that each cutting edge 11 can grind the interval between the two adjacent cutting edges 11 in the previous group in the moving process, and the whole file head 1 is larger in grinding range, more uniform in stress and more accurate in grinding size when rotating.

Referring to fig. 1, the cutting edge 11 is rectangular, so that the area of the cutting edge 11 is larger, and waste chips generated in the grinding process can be discharged more conveniently; the blade edge 12 is a long edge of the cutting edge 11, the blade edge 12 is arranged in a zigzag manner, the zigzag blade edge 12 is sharper, and a patient with harder bone is used, so that the grinding process is smoother.

Referring to fig. 3, a positioning hole 13 is formed in the center of the top of the file head 1, a positioning pin 3 penetrates through the positioning hole 13, the positioning pin 3 is fixedly connected with the file head 1, and one end, penetrating through the positioning hole 13, of the positioning pin 3 is arranged in a needle point shape; when grinding the acetabulum, the positioning pin 3 is abutted in the acetabulum, the positioning pin 3 can form a positioning point matched with the shape of the acetabulum, because in the process of hip joint replacement surgery, an acetabulum file with smaller size needs to be replaced with an acetabulum file with larger size in sequence, when the acetabulum file is replaced, the positioning pin 3 of the next acetabulum file is abutted at the positioning point generated in the first grinding, the consistency with the first grinding position can be ensured, and the grinding precision of the acetabulum is improved.

The file head 1 is integrally made of Trinamet stainless steel materials, can be formed in a casting one-step mode or a stamping mode, the cutting edge 11 and the cutting edge 12 can be formed in a stamping mode or a linear cutting mode, so that the acetabular file has better wear resistance and corrosion resistance, the cutting edge 11 is not easy to wear, the service life is longer, and the economical efficiency is better.

Referring to fig. 2, the holder 2 includes a circular table 21 disposed inside the rasp head 1 and a plurality of supporting rods 22 fixed to the circular table 21; the round table 21 is arranged in a cylindrical shape, and the axis of the round table 21 is superposed with the axis of the filing head 1; the cross section of the supporting rod 22 is circularly arranged, the supporting rod 22 is arranged along the radial direction of the circular truncated cone 21, the number of the supporting rods 22 is four in the embodiment, the four supporting rods 22 are uniformly distributed along the circumferential direction of the circular truncated cone 21, namely, the four supporting rods are distributed in a cross shape, the supporting rods 22 and the circular truncated cone 21 are integrally formed, and one end, far away from the circular truncated cone 21, of the supporting rod 22 is welded with the inner side wall of the file head 1.

The four supporting rods 22 and the circular truncated cone 21 improve the structural strength of one side of the opening of the file head 1, so that the file head 1 is not easy to deform after being stressed, a handheld part is also improved for medical workers, the medical workers can take the acetabular file conveniently, the cutting edge 11 and the cutting edge 12 are not easy to touch in the taking process, and the electric drill is also convenient to connect.

Referring to fig. 2, the circular truncated cone 21 is further provided with a size mark 211 towards one end of the outer side of the file head 1, and the processing diameter of each file head 1 can be marked on the circular truncated cone 21, so that medical staff can conveniently and directly observe the size of the file head 1, and the convenience of the acetabular file in use is improved.

In addition, the whole bracket 2 is integrally formed in a powder metallurgy mode, so that the strength of the whole structure is higher, the size mark 211 on the circular table 21 can be formed together with the circular table 21, and the processing mode is simple and convenient.

The implementation principle of the embodiment 1 is as follows: in the rotation process of the acetabular file, the cutting edges 11 and the cutting edges 12 which are spirally raised grind the acetabulum, and each cutting edge 11 in each group additionally grinds the position between two adjacent cutting edges 11 in the previous group, so that the grinding area and the grinding precision of the acetabular file are improved; under the action of the positioning pin 3, the grinding position of the acetabulum file is kept consistent with the grinding position of the first acetabulum file when the acetabulum files with different sizes are replaced, so that the grinding quality of the acetabulum is effectively improved; the high-strength stainless steel is made of Trinamet stainless steel, so that the high-strength stainless steel is not easy to wear, long in service life and good in economical efficiency.

Example 2

The difference from embodiment 1 is that the cutting edge 11 and the blade edge 12 are different in shape.

Referring to fig. 4, the cutting edges 11 are formed in a circular shape, and the area of the circular cutting edges 11 is smaller, so that more cutting edges 11 can be formed on the file head 1, the number of the cutting edges 12 is correspondingly increased, and the grinding precision is higher; moreover, one side of the top center of the file head 1 is also provided with a cutting edge 11, so that the cutting edge 11 at the top center rotates around the axis of the file head 1 in the rotating process of the file head 1, and compared with the embodiment 1, the grinding range is wider, and the rasp is suitable for patients with softer bone and more epiphysis.

Referring to fig. 4, the file head 1 is provided with a protrusion 14 formed from inside to outside on one side of the cutting edge 11 departing from the rotating direction of the file head 1, the protrusion 14 is arranged in a spherical shape, the position of the protrusion 14 is crossed with the position of the cutting edge 11, so that the side edge of the cutting edge 11 is bent upwards at the protrusion 14, and thus a blade edge 12 is formed; compared with the serrated edge 12 in the embodiment 1, the edge 12 is more suitable for the circular cutting edge 11 and is sharper, the grinding precision of the acetabulum is improved, the strength of the edge 12 is also improved, the edge 12 is not easy to wear, and the service life of an acetabulum file is prolonged. Similarly, the cutting edge 11 and the protrusion 14 are both formed by punching, so that the processing and the production are convenient.

In the rotating process of the acetabular file, if the shape of the acetabulum is irregular, the acetabular file is easy to block, so that the acetabular file cannot rotate, the position of the acetabular file can only be adjusted after the acetabular file is taken out, and then grinding work is carried out, so that certain influence is caused on the grinding work.

Referring to fig. 4, in order to make the acetabular bone file not easy to be blocked, the spiral line is distributed discontinuously, and the cutting edge 11 is not arranged at the discontinuous part of the spiral line in the file head 1, so that the position without the cutting edge 11 can play a discontinuous role in the grinding process, and the same part of the acetabulum forms a discontinuous grinding action, compared with continuous grinding, the file head 1 is given a slow time, so that the file head 1 can rotate more smoothly in the acetabulum.

The implementation principle of the embodiment 2 is as follows: for the patient with softer sclerotin, can directly adopt the acetabular bone file of circular hole shape blade 11 to process, the sword limit 12 intensity that forms through punching press arch 14 is high, improves the grinding efficiency to the acetabulum to it is higher to be the grinding precision of spiral rising form distribution to the acetabulum, and the position of not seting up blade 11 can effectually reduce the dead phenomenon of acetabular bone file card.

To some harder patients of sclerotin, also can use the acetabular bone file in embodiment 1 earlier to carry out preliminary grinding, use the acetabular bone file in embodiment 2 at last again to carry out the grinding, the collocation use can not only improve the grinding quality to the acetabular bone, can also reduce the wearing and tearing of acetabular bone file, improves the life of acetabular bone file.

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. An acetabular file, comprising: comprises a file head (1) arranged in a hemispherical shell and a bracket (2) arranged on the inner side of the file head (1); the file head (1) is provided with a plurality of cutting edges (11), the cutting edges (11) are divided into a plurality of groups, the cutting edges (11) in each group are spirally arranged from the bottom of the shell to the center of the top of the shell at intervals, the spiral directions of the plurality of groups of cutting edges (11) are consistent, and the spiral direction of the cutting edges (11) is the rotating direction of the file head (1); one side edge of the cutting edge (11) departing from the rotating direction of the file head (1) is provided with a cutting edge (12) for cutting acetabulum, and the cutting edge (12) faces to the position between two adjacent cutting edges (11) in a group in front of the cutting edge.

2. An acetabular file according to claim 1, wherein: the cutting edge (11) is arranged in a rectangular shape, and the edge (12) is a long edge of the cutting edge (11).

3. An acetabular file according to claim 2, wherein: the blade edge (12) is arranged in a zigzag manner.

4. An acetabular file according to claim 3, wherein: the top center of the filing head (1) is also provided with a positioning hole (13), and a positioning pin (3) penetrates through the positioning hole (13).

5. An acetabular file according to claim 1, wherein: the cutting edge (11) is arranged in a circular shape.

6. An acetabular file according to claim 5 wherein: the file head (1) is provided with a bulge (14) protruding from inside to outside on one side of the cutting edge (11) departing from the rotating direction of the file head (1), the bulge (14) is crossed with the cutting edge (11), and the side edge of one side of the cutting edge (11) is bent upwards to form a cutting edge (12).

7. An acetabular file according to claim 6, wherein: the protrusions (14) are arranged spherically.

8. An acetabular file according to claim 7, wherein: the spiral lines of the arrangement of the cutting edges (11) are arranged discontinuously, and the cutting edges (11) are not arranged at the broken positions of the file head (1) between the spiral lines.

9. An acetabular file according to any one of claims 1 to 8 wherein: the support (2) is including setting up round platform (21) and a plurality of branch (22) that set firmly in round platform (21) circumference at file head (1) inboard a plurality of branch (22) and round platform (21) integrated into one piece, each one end and file head (1) inside wall fixed connection that round platform (21) were kept away from in branch (22).

10. An acetabular file according to claim 9, wherein: the circular truncated cone (21) is provided with a size mark (211).