CN116616842B

CN116616842B - Bidirectional spreader

Info

Publication number: CN116616842B
Application number: CN202310889413.9A
Authority: CN
Inventors: 吴浩; 王亚松; 张帅; 李超; 丁波; 郭晓敏; 郝伟; 王燕妮
Original assignee: Xuanwu Hospital; Beijing AK Medical Co Ltd
Current assignee: Xuanwu Hospital; Beijing AK Medical Co Ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2023-10-13
Anticipated expiration: 2043-07-20
Also published as: CN116616842A

Abstract

The application provides a bidirectional spreader, comprising: the shell is provided with a first guide rail and a linkage part, the linkage part is arranged at one end of the shell, and a plurality of linkage parts are uniformly distributed around the axis of the shell in an array manner; the driving body is provided with a driving rod perpendicular to the axis of the driving body, the driving rod is slidably arranged in the first guide rail and the second guide rail, and one end of the driving body is also provided with a first tenon part which is inserted into or abutted against the supporting body; the sleeve comprises a driving part and a second guide rail, and the driving part is connected with the linkage body in an inserting way; the linkage body comprises a first hole, a second hole and a sliding rotation shaft, and is arranged on the driving part of the sleeve in a sliding manner; the opening arm is provided with a rotating part and a cylindrical part, and is inserted into a first hole of the linkage body; the opening body is provided with a second tenon part which is inserted into or is abutted against the first tenon part, and is slidably arranged at one end of the shell, and one end of the opening body is also provided with an opening part. By applying the technical scheme of the application, the expanding movement in multiple directions can be realized, and the operation flow is simplified.

Description

Bidirectional spreader

Technical Field

The application relates to the technical field of medical instruments, in particular to a bidirectional spreader.

Background

The intervertebral fusion is a mature operation type for treating the degenerative diseases of the spine, has the advantages of high fusion rate, low complications and the like, and the intervertebral fusion device prosthesis is used for replacing pathological intervertebral discs in the operation, so that the original physiological function characteristics of the spine are recovered.

In the prior art, most of the intervertebral fusion cage expanding devices are in a clamp-shaped structure, and only can expand a single direction on the section where the clamp body is located, so that expanding requirements on multiple directions cannot be met.

Aiming at the problems, the application provides a bidirectional spreader which is provided with spreading arms and spreading parts in multiple directions and is driven by means of the movement of a driving body along the axis of a shell or the rotation of the driving body around the axis of the shell, so that the spreading function of the spreading arms and/or the spreading parts in multiple directions is realized.

Disclosure of Invention

The application provides a bidirectional spreader, comprising: the shell is provided with a first guide rail and a linkage part, the first guide rail comprises a first section of rail, a third section of rail and a second section of rail which are vertical to the axis of the shell, the first guide rail penetrates through the inner surface and the outer surface of the shell, the linkage part is arranged at one end of the shell, and a plurality of linkage parts are uniformly distributed around the axis of the shell in an array manner; the driving body is provided with a driving rod perpendicular to the axis of the driving body, the driving rod is slidably arranged in the first guide rail and the second guide rail, one end of the driving body is also provided with a first tenon part, and the first tenon part is spliced or abutted with the supporting body; the sleeve comprises a driving part and a second guide rail, wherein the second guide rail comprises a fourth section of rail perpendicular to the axis of the sleeve and a fifth section of rail parallel to the axis of the sleeve, and the driving part is connected with the linkage body in an inserting mode; the linkage body comprises a first hole, a second hole and a sliding and rotating shaft, the two linkage bodies are arranged in parallel in one linkage part, and the linkage body is arranged on the driving part of the sleeve in a sliding and rotating manner; the opening arm is provided with a rotating part and a cylindrical part, the rotating part is inserted into a second hole of the linkage body, and the opening arm is provided with an initial position and an opening position; the support body is provided with a second tenon part for being inserted into or abutted against the first tenon part, and is also provided with a guide groove for being inserted into the shell, the support body is slidably arranged at one end of the shell, and one end of the support body is also provided with a support part.

Further, the linkage part is provided with a linkage shaft, and the linkage shaft is inserted into a first hole of the linkage body.

Further, the shell is provided with a limiting protrusion, the guide groove is provided with a limiting groove, and the limiting protrusion is inserted into the limiting groove to limit the rotation of the supporting body around the shaft.

Further, the housing is provided with a first operation portion perpendicular to the axis, and the driving body is provided with a second operation portion perpendicular to the axis.

Further, the driving part is provided with a driving hole, the section of the driving hole is in a long strip shape with an arc end part and a rectangular middle part, and the sliding rotating shaft is movably and rotatably arranged in the driving hole.

Further, the rotating part is provided with a rotating shaft, and the rotating shaft is inserted into a second hole of the linkage body.

Further, the expanding part is wedge-shaped along the axial cross section.

Further, the first tenon part and the second tenon part are made of heteropolar magnetic attraction materials.

By applying the technical scheme of the application, the bidirectional spreader comprises: the device comprises a shell, a driving body, a sleeve, a linkage body, a spreading arm and a spreading body, wherein when spreading operation is carried out, the driving body is pulled to drive the sleeve to axially move along the shell, and the spreading arm is driven to rotate around the linkage body, so that spreading movement in one direction is completed; the driving body is rotated to be abutted against the expanding body, and the driving body is pushed to drive the expanding body to axially move along the shell, so that expanding movement in the other direction is completed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 illustrates an exploded view of a two-way spreader provided in accordance with an embodiment of the present application;

FIG. 2 shows a right side view of the two-way distractor of FIG. 1;

FIG. 3 shows a cross-sectional view in the direction A-A of FIG. 3;

FIG. 4 shows a cross-sectional view in the direction B-B in FIG. 3;

FIG. 5 shows a cross-sectional view in the direction C-C of FIG. 3;

FIG. 6 shows a schematic structural view of the housing of the two-way distractor of FIG. 1;

FIG. 7 is a schematic view of the drive body of the bi-directional distractor of FIG. 1;

FIG. 8 shows a schematic structural view of the sleeve of the bi-directional distractor of FIG. 1;

FIG. 9 shows a cross-sectional view of the sleeve of the two-way distractor of FIG. 1;

FIG. 10 shows a schematic structural view of the linkage of the two-way distractor of FIG. 1;

FIG. 11 shows a schematic structural view of the spreader arms of the bi-directional spreader of FIG. 1;

fig. 12 shows a schematic structural view of the distractor body of the two-way distractor of fig. 1.

Wherein the above figures include the following reference numerals:

10. a housing; 11. a first guide rail; 111. a first section of rail; 112. a second section of rail; 113. a third section of rail; 12. a linkage part; 121. a linkage shaft; 13. a limit protrusion; 14. a first operation section;

20. a driving body; 21. a first tenon portion; 22. a driving rod; 23. a second operation section;

30. a sleeve; 31. a driving section; 311. a drive hole; 32. a second guide rail; 321. a fourth section of rail; 322. a fifth section of track;

40. a linkage body; 41. a first hole; 42. a second hole; 43. a slide shaft;

50. a spreader arm; 51. a rotating part; 511. a rotating shaft; 52. a cylindrical portion;

60. a spreader; 61. a second tenon portion; 62. a spreader; 63. a guide groove; 631. and a limit groove.

Description of the embodiments

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 12, the present application provides a bi-directional distractor, comprising: the device comprises a shell 10, a first guide rail 11 and a linkage part 12, wherein the first guide rail 11 comprises a first section of rail 111, a third section of rail 113 and a second section of rail 112 which are perpendicular to the axis of the shell 10 along the axis of the shell 10, the first guide rail 11 penetrates through the inner surface and the outer surface of the shell 10, the linkage part 12 is arranged at one end of the shell 10, and a plurality of linkage parts 12 are uniformly distributed around the axis of the shell 10; the driving body 20 is provided with a driving rod 22 perpendicular to the axis of the driving body 20, the driving rod 22 is slidably arranged in the first guide rail 11 and the second guide rail 32, one end of the driving body 20 is also provided with a first tenon part 21, and the first tenon part 21 is spliced or abutted with the supporting body 60; a sleeve 30, comprising a driving part 31 and a second guide rail 32, wherein the second guide rail 32 comprises a fourth section rail 321 perpendicular to the axis of the sleeve 30 and a fifth section rail 322 parallel to the axis of the sleeve 30, and the driving part 31 is inserted into the linkage 40; a linkage body 40 including a first hole 41, a second hole 42 and a sliding shaft 43, the two linkage bodies 40 being arranged in parallel in one linkage part 12, the linkage body 40 being slidably arranged in the driving part 31 of the sleeve 30; a spreading arm 50, provided with a rotating part 51 and a cylindrical part 52, wherein the rotating part 51 is inserted into the second hole 42 of the linkage body 40, and the spreading arm 50 has an initial position and a spreading position; the supporting body 60 is provided with a second tenon portion 61 for being inserted into or abutted against the first tenon portion 21, and is also provided with a guide groove 63 for being inserted into the shell 10, the supporting body 60 is slidably arranged at one end of the shell 10, and one end of the supporting body 60 is also provided with a supporting portion 62.

As shown in fig. 6, the linkage part 12 is provided with a linkage shaft 121, and the linkage shaft 121 is inserted into the first hole 41 of the linkage body 40.

As shown in fig. 1, 6 and 12, the housing 10 is provided with a limiting protrusion 13, the guiding slot 63 is provided with a limiting groove 631, and the limiting protrusion 13 is inserted into the limiting groove 631 to limit the rotation of the prop-open body 60 around the shaft.

As shown in fig. 1 to 7, the housing 10 is provided with a first operating portion 14 perpendicular to the axis, and the driving body 20 is provided with a second operating portion 23 perpendicular to the axis.

As shown in fig. 9, the driving part 31 is provided with a driving hole 311, the driving hole 311 has a cross-sectional shape of an elongated shape having an arc end and a rectangular middle, and the slide shaft 43 is movably and rotatably provided in the driving hole 311.

As shown in fig. 10, the rotating portion 51 is provided with a rotating shaft 511, and the rotating shaft 511 is inserted into the second hole 42 of the coupling body 40.

As shown in fig. 4 and 12, the spreading portion 62 is wedge-shaped in axial cross section.

In particular, the first tenon portion 21 and the second tenon portion 61 are made of a heteropolar magnetic attraction material.

In the specific opening implementation process, in the first stage, the driving rod 22 moves along the first section rail 111 in the direction away from the opening body 60, drives the sleeve 30 to be away from the opening body 60, drives the linkage body 40 to open outwards in a homeopathic manner, and the opening arm 50 is always parallel to the casing 10 to open outwards, and at this time, the first tenon portion 21 is separated from the second tenon portion 61; in the second stage, the driving rod 22 rotates around the shaft along the second section rail 112 and the fourth section rail 321, the sleeve 30 is locked in the final state of the first stage, the expanding arm 50 is locked in the expanding position, and the first tenon part 21 abuts against the second tenon part 61; in the third stage, the driving rod 22 moves along the third section rail 113 and the fifth section rail 322 in the direction approaching the expanding body 60, the second tenon portion 61 is pushed out by the first tenon portion 21, and the expanding portion 62 of the expanding body 60 completes the expanding movement by virtue of the wedge-shaped section.

In the specific retraction process, the first tenon portion 21 magnetically attracts the second tenon portion 61, the driving rod 22 moves away from the spreader 60 to enable the spreader 60 to retract to the original position, and the driving rod 22 rotates around the axis along the second section rail 112 and the fourth section rail 321 and then moves along the first section rail 111 in the direction close to the spreader 60 to enable the sleeve 30 to drive the spreader arms 50 to retract to the original position.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bi-directional distractor, comprising:

the device comprises a shell (10) and a plurality of connecting parts, wherein the shell is provided with a first guide rail (11) and connecting parts (12), the first guide rail (11) comprises a first section of rail (111) along the axis of the shell (10), a third section of rail (113) and a second section of rail (112) perpendicular to the axis of the shell (10), the first guide rail (11) penetrates through the inner surface and the outer surface of the shell (10), the connecting parts (12) are arranged at one end of the shell (10), and the connecting parts (12) are uniformly distributed in an array mode around the axis of the shell (10);

the driving body (20) is provided with a driving rod (22) perpendicular to the axis of the driving body (20), the driving rod (22) is slidably arranged in the first guide rail (11) and the second guide rail (32), one end of the driving body (20) is also provided with a first tenon part (21), and the first tenon part (21) is spliced or abutted with the supporting body (60);

a sleeve (30) comprising a driving part (31) and a second guide rail (32), wherein the second guide rail (32) comprises a fourth section of rail (321) perpendicular to the axis of the sleeve (30) and a fifth section of rail (322) parallel to the axis of the sleeve (30), and the driving part (31) is connected with a linkage body (40) in an inserting way;

the linkage body (40) comprises a first hole (41), a second hole (42) and a sliding rotation shaft (43), the two linkage bodies (40) are arranged in parallel in one linkage part (12), and the linkage body (40) is arranged on a driving part (31) of the sleeve (30) in a sliding rotation manner;

a spreading arm (50) provided with a rotating part (51) and a cylindrical part (52), wherein the rotating part (51) is inserted into a second hole (42) of the linkage body (40), and the spreading arm (50) is provided with an initial position and a spreading position;

the expansion body (60) is provided with a second tenon part (61) for being inserted into or abutted against the first tenon part (21), a guide groove (63) for being inserted into the shell (10) is further provided, the expansion body (60) is slidably arranged at one end of the shell (10), and an expansion part (62) is further arranged at one end of the expansion body (60).

2. A two-way spreader according to claim 1, characterized in that the linkage part (12) is provided with a linkage shaft (121), the linkage shaft (121) being inserted into the first hole (41) of the linkage body (40).

3. The bidirectional spreader as recited in claim 1 wherein the housing (10) is provided with a limiting protrusion (13), the guiding groove (63) is provided with a limiting groove (631), and the limiting protrusion (13) is inserted into the limiting groove (631) to limit the rotation of the spreader (60) around the shaft.

4. A two-way spreader according to claim 1, characterized in that the housing (10) is provided with a first operating portion (14) perpendicular to the axis and the driving body (20) is provided with a second operating portion (23) perpendicular to the axis.

5. A bi-directional spreader as claimed in claim 1, wherein the driving part (31) is provided with a driving hole (311), the driving hole (311) has a cross-sectional shape of an elongated shape of an arc at an end and a rectangle at a middle, and the sliding shaft (43) is movably and rotatably disposed in the driving hole (311).

6. A two-way spreader according to claim 1, characterized in that the rotating part (51) is provided with a rotating shaft (511), the rotating shaft (511) being inserted into the second hole (42) of the linkage body (40).

7. A two-way spreader as claimed in claim 6, wherein the spreader portion (62) is wedge-shaped in axial cross-section.

8. A two-way spreader as claimed in claim 1, wherein the first and second tenon portions (21, 61) are of dissimilar magnetic attraction material.