CN113440319B

CN113440319B - Expandable interbody fusion cage test mold

Info

Publication number: CN113440319B
Application number: CN202110860415.6A
Authority: CN
Inventors: 裴博
Original assignee: Foshan Jianxiang Hospital Co Ltd
Current assignee: Foshan Jianxiang Hospital Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-05-31
Anticipated expiration: 2041-07-29
Also published as: CN113440319A

Abstract

The invention discloses an expandable interbody fusion cage test mold, which belongs to the field of interbody surgical instruments and comprises a test mold body and a fixed tube, wherein one end of the fixed tube is provided with an adjusting table, an adjusting rod penetrates through the fixed tube, the adjusting rod penetrates through the fixed tube and is in threaded connection with the adjusting table, the test mold body comprises two test modules, the test modules are in sliding connection with the adjusting table, one surfaces, close to each other, of the two test modules are provided with guide surfaces abutted against the adjusting rod, the two guide surfaces are symmetrically arranged, and the two guide surfaces are obliquely arranged from one end close to the adjusting table to one end far away from the adjusting table. The application has the effect of improving the adaptation degree of the size of the fusion cage and the interval between the two vertebral bodies.

Description

Expandable interbody fusion cage test mold

Technical Field

The invention relates to the field of intervertebral surgical instruments, in particular to an expandable intervertebral fusion device test mold.

Background

The intervertebral operation is a common surgical operation and is used for treating lumbar diseases, such as intervertebral disc diseases, unstable lumbar and the like, which are often seen in middle-aged and elderly people, but with the more serious sitting problem of the society, the lumbar diseases have the trend of being younger, so that the treatment of the lumbar diseases becomes more critical.

The spinal fusion is one of intervertebral operations, and the spinal fusion needs to use the interbody fusion cage, and during the operation, the interbody fusion cage can be implanted between the centrum of backbone to keep the interval between two centrums, realize follow-up recovered.

In the process of implanting the related interbody cage into the spine, the interbody cage often needs to be selected by experience, which often causes the size of the interbody cage to be improper from the space between two vertebral bodies, and the improper interbody cage needs to be taken out to replace a new interbody cage, thereby affecting the efficiency and the effect of the operation.

Disclosure of Invention

In order to improve the adaptation degree of size and interval between two centrums when the cage is implanted, this application provides an expandable interbody cage examination mould.

The application provides an expandable interbody fusion cage examination mould adopts following technical scheme:

the utility model provides an expandable interbody fusion cage tries mould, includes examination mould body and fixed pipe, the one end of fixed pipe is equipped with the adjustment table, wear to be equipped with in the fixed pipe and adjust the pole, adjust the pole wear to establish and threaded connection in the adjustment table, try the mould body and include two examination modules, try module sliding connection in the adjustment table, two the one side that the examination module is close to mutually be equipped with adjust the spigot surface of pole butt, two the spigot surface symmetry sets up and sets up from the one end that is close to the adjustment table to the one end slope of keeping away from the adjustment table.

Through adopting above-mentioned technical scheme, before putting into the fusion cage, can put into between the centrum with the examination mould body earlier, rotate the regulation pole, can make the regulation pole remove, utilize the spigot surface that the slope set up, the regulation pole can drive two examination modules and remove toward the direction of keeping away from each other, realize strutting of examination mould body, block until examination mould body and centrum, surgical personnel can select the fusion cage of suitable size according to the width after examination mould body struts this moment, thereby improve the adaptation degree of interval between fusion cage size and two centrums.

Optionally, the side wall of the adjusting rod is provided with scales, and the scales display the distance between the two test modules departing from one surface.

By adopting the technical scheme, the operator can clearly know the width of the trial mould body by observing the scales, so that the corresponding fusion cage can be conveniently selected.

Optionally, the tip of adjusting the pole be equipped with the regulating block of spigot joint, the regulating block is the round platform form, the spigot joint the lateral wall shape of regulating block is the inner arc form.

Through adopting above-mentioned technical scheme, the area of contact of regulating block and spigot surface is big and stability is high, is convenient for drive the test module and removes.

Optionally, the distance between the two guide surfaces gradually decreases from the end close to the adjusting table to the end far away from the adjusting table.

Through adopting above-mentioned technical scheme, when the regulation platform was kept away from to the regulating block, can drive two examination modules and remove toward the direction of keeping away from each other to realize opening of examination mould.

Optionally, an elastic member is connected between the two test modules.

Through adopting above-mentioned technical scheme, elastic component and regulating block cooperate, and the restriction is tried the module and is slided, keeps the stability of the relative position of two examination modules to keep trying the stability of the whole width of mould body, improve the stability when trying the mould body.

Optionally, the adjusting block is provided with a sliding groove, the adjusting rod is slidably connected with the sliding groove, the adjusting rod penetrates through the control rod, the control rod is fixed to the adjusting block, and a locking piece used for locking the position of the adjusting rod and the position of the adjusting rod is arranged between the control rod and the adjusting rod.

Through adopting above-mentioned technical scheme, prop open to the at utmost after the examination mould body, through control lever pulling regulating block, make the regulating block be close to the regulation platform, then the examination mould body contracts under the effect of elastic component to be convenient for take out the examination mould body, need not to rotate the regulation pole simultaneously, keep the scale unchangeable, thereby can take out the whole width of examination mould body of record again after the examination mould body, it is more convenient to operate.

Optionally, the retaining member includes with the lock sleeve that the control lever is connected, the regulation pole is kept away from the terminal surface of regulating block has seted up the locking groove along length direction, lock sleeve threaded connection in the locking groove.

Through adopting above-mentioned technical scheme, the position of control lever is fixed to the lock sleeve, in addition through rotatory lock sleeve, can drive the control lever and remove to the control adjustment piece removes.

Optionally, the adjusting table is provided with a moving groove, and the test module is provided with a sliding block slidably connected to the moving groove.

Through adopting above-mentioned technical scheme, realize trying the sliding connection of module and regulation platform, keep trying the relative stability of module position.

Optionally, the outer wall of adjusting the pole is equipped with the connecting block, the connecting block cover is established and the joint has the turning block, the turning block is equipped with the rotation handle.

Through adopting above-mentioned technical scheme, the turning block is convenient for rotate with the rotation handle and is adjusted the pole, and connecting block and turning block joint for when the working channel flip-chip of fixed pipe and foraminiferous mirror, can dismantle the turning block with the rotation handle, be convenient for realize the flip-chip.

In summary, the present application has the following beneficial effects:

1. before the test mold body is placed between the vertebral bodies, the test mold body can be placed between the vertebral bodies, the adjusting rod is rotated to enable the adjusting rod to move, the adjusting rod can drive the two test mold bodies to move in the direction away from each other by utilizing the guide surface which is obliquely arranged, the test mold body is unfolded until the test mold body is clamped with the vertebral bodies, and an operator can select a fusion device with a proper size according to the width of the expanded test mold body at the moment, so that the adaptation degree of the size of the fusion device and the interval between the two vertebral bodies is improved;

2. after the test mold body is spread to the maximum degree, the test mold body can be contracted on the premise of not rotating the adjusting rod, so that the scales are kept unchanged, and the whole width of the test mold body is recorded after the test mold body is taken out.

Drawings

Fig. 1 is a perspective view of an embodiment of the present application.

Fig. 2 is a sectional structure view of an embodiment of the present application.

Fig. 3 is a perspective view of the intervertebral foramen mirror inverted in the embodiment of the present application.

Description of reference numerals:

1. testing the mould body; 11. a test module; 12. a slider; 13. a guide surface; 14. a spring; 2. an adjusting table; 21. a fixed tube; 22. a moving groove; 3. adjusting a rod; 31. calibration; 32. connecting blocks; 33. rotating the block; 34. rotating the handle; 35. an adjusting block; 36. a sliding groove; 37. a control lever; 38. a locking sleeve; 39. a locking groove; 4. an intervertebral foramen mirror.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an expandable interbody fusion cage test mould. As shown in figure 1, the test mould of the expandable interbody fusion cage comprises a test mould body 1 and a fixing tube 21, wherein an adjusting table 2 is fixed at one end of the fixing tube 21, and the test mould body 1 is connected with the adjusting table 2.

The width of examination mould body 1 is adjustable, before implanting the fusion cage, stretches into examination mould body 1 between the centrum through fixed pipe 21 earlier, adjusts the width of examination mould body 1, until examination mould body 1 card between the centrum, the width of examination mould body 1 can supply the operating personnel to refer this moment to select the suitable fusion cage of size, thereby improve the spaced adaptation degree between fusion cage size and the two centrums.

As shown in fig. 1 and 2, the shifting chute 22 has been seted up to the one side that the regulation platform 2 deviates from fixed pipe 21, the shifting chute 22 is provided with two and is located the both ends of regulation platform 2 respectively, the shifting chute 22 extends along the length direction of regulation platform 2, examination mould body 1 includes two examination modules 11, the one end that examination module 11 is close to regulation platform 2 is fixed with slider 12, slider 12 sliding connection is in shifting chute 22, the cross section of slider 12 and shifting chute 22 all is the wedge shape, thereby realize the sliding connection of examination module 11 and regulation platform 2, two examination modules 11 can realize being close to each other or the operation of keeping away from each other on regulation platform 2.

The guide surfaces 13 are arranged on the surfaces, close to each other, of the two test modules 11, the two guide surfaces 13 are symmetrically arranged, the guide surfaces 13 are in an inner arc shape, namely, the arc-shaped openings of the two guide surfaces 13 are oppositely arranged, and the distance between the two guide surfaces 13 is gradually reduced from one end, close to the adjusting table 2, to the end, far away from the adjusting table 2, so that the guide surfaces 13 and the adjusting table 2 are obliquely arranged; be connected with the elastic component between the guide surface 13 of two examination modules 11, the elastic component specifically is spring 14, and spring 14 is provided with a set ofly respectively in the both sides of examination module 11, and every group spring 14 is provided with two along the extending direction that examination module 11 kept away from regulation platform 2, and spring 14 plays two taut examination module 11's effects, keeps two examination modules 11 to have the trend of being close to each other.

The fixed pipe 21 is of a cylindrical hollow structure, the adjusting rod 3 penetrates through the fixed pipe 21, the adjusting rod 3 extends along the length direction of the fixed pipe 21, the outer wall of the adjusting rod 3 is attached to the inner wall of the fixed pipe 21, the adjusting rod 3 penetrates through the adjusting platform 2 and is in threaded connection with the adjusting platform 2, an adjusting block 35 is arranged at one end, penetrating out of the adjusting platform 2, of the adjusting rod 3, and the adjusting block 35 is located between the two test modules 11; the adjusting block 35 is in a circular truncated cone shape, the area of the end face, close to the adjusting table 2, of the adjusting block 35 is larger than the area of the end face, far away from the adjusting table 2, of the adjusting block 35, and the side wall of the adjusting block 35 abuts against the guide face 13.

The adjusting rod 3 is rotated, the adjusting block 35 is moved through the threaded matching of the adjusting rod 3 and the adjusting platform 2, when the adjusting block 35 moves towards the direction far away from the adjusting platform 2, the adjusting block 35 can drive the two test modules 11 to move towards the direction far away from each other, so that the test die body 1 is unfolded, and the width of the test die body 1 can be adjusted; the inner arc of the guide surface 13 is arranged and the round platform of the adjusting block 35 is arranged, so that the contact area between the adjusting block 35 and the test module 11 is larger, the width of the test module body 1 is adjusted more stably, and the stability of the test module body 1 in testing the interval between the vertebral bodies is improved.

As shown in fig. 1, the scale 31 is etched on the outer wall of the adjusting rod 3, part of the scale 31 extends out of the end of the fixing tube 21, when the adjusting rod 3 is rotated and the two test modules 11 are moved, the position of the scale 31 changes along with the movement of the adjusting rod 3, namely, the position of the scale 31 changes along with the movement of the two test modules 11, and the scale line flush with the end surface of the fixing tube 21 displays the distance between the two test modules 11 opposite to each other, so that the width of the test module body 1 can be known according to the scale 31, and the vertebral body interval can be known accordingly, and the fusion cage with a proper size can be selected.

The outer wall of the adjusting rod 3 is sleeved and fixed with a connecting block 32, the connecting block 32 is located at one end, away from the adjusting table 2, of the scale 31, the cross section of the connecting block 32 is in a regular hexagon shape, the connecting block 32 is sleeved with a rotating block 33, the rotating block 33 is in a hollow structure, the cross section of the rotating block 33 is in a regular hexagon shape, the rotating block 33 is clamped with the connecting block 32, rotating handles 34 are symmetrically fixed on the side walls of the rotating block 33, and an operator can drive the adjusting rod 3 to rotate by rotating the rotating handles 34, so that force application is facilitated; in addition, as shown in fig. 3, the rotating block 33 is detachably connected with the connecting block 32, so that the expandable interbody fusion cage test mold and the intervertebral foramen mirror 4 can be inverted, the fixing tube 21 specifically extends into the intervertebral foramen mirror 4 from one end of the working channel, the other end of the working channel extends out, then the rotating block 33 and the connecting block 32 are connected, the adjusting table 2 and the test mold body 1 are located outside the intervertebral foramen mirror 4, and an operator can observe the specific position of the test mold body 1 through the intervertebral foramen mirror 4 when putting the test mold body 1 into the test mold body 1, so that the test mold body 1 can be conveniently put into.

As shown in fig. 2, a sliding groove 36 is formed in the end surface of the adjusting block 35 close to the adjusting table 2, the sliding groove 36 extends between two end surfaces of the adjusting block 35, the adjusting rod 3 is slidably connected to the sliding groove 36, the adjusting rod 3 is inserted and slidably connected with a control rod 37 along the length direction, and the control rod 37 is fixedly connected with the bottom of the sliding groove 36, so that the control rod 37 is fixedly connected with the adjusting block 35, and the control rod 37 can drive the adjusting block 35 to move.

Be equipped with the retaining member between control lever 37 and the regulation pole 3, in this embodiment, the retaining member is lock sleeve 38, lock sleeve 38 is one end open-ended hollow structure, adjust the terminal surface that pole 3 kept away from regulating block 35 and seted up locking groove 39, locking groove 39 extends along the length direction who adjusts pole 3, control lever 37 wear to locate locking groove 39 and with lock sleeve 38 fixed connection, lock sleeve 38 is equipped with the external screw thread, lock sleeve 38 and locking groove 39 threaded connection, make rotatory lock sleeve 38 can drive regulating block 35 and remove.

As shown in fig. 1 and 2, before the test mold body 1 is placed between the vertebral bodies, the locking sleeve 38 is rotated to make the adjusting block 35 move relative to the adjusting rod 3, and a space is left between the adjusting rod 3 and the bottom of the sliding groove 36; strutting examination mould body 1 after, reverse rotation lock sleeve 38, make regulating block 35 toward the direction removal of being close to adjustment station 2, under spring 14's answer elasticity, two examination modules 11 can be toward the direction removal that is close to each other, thereby reduce the width of examination mould body 1 and extract examination mould body 1 in order to make things convenient for, improve the efficiency of using examination mould body 1, it need not to rotate to adjust pole 3 simultaneously, thereby make the scale mark keep with examination mould body 1 the 31 lines of scale when strutting unanimous, take out and take notes the whole width of examination mould body 1 again behind examination mould body 1, it is more convenient to operate.

The implementation principle of the test model of the expandable interbody fusion cage in the embodiment of the application is as follows:

before the fusion device is implanted, the test mold body 1 is placed between the vertebral bodies, the rotating handle 34 is rotated to drive the adjusting rod 3 to rotate, the adjusting block 35 is driven to move in the direction away from the adjusting table 2, the two test mold blocks 11 are mutually far away by utilizing the matching of the adjusting block 35 and the guide surface 13, the expansion of the test mold body 1 is realized, so that the test mold body 1 can be clamped between the vertebral bodies, and the interval between the vertebral bodies can be displayed on the scale 31; examination mould body 1 card between the centrum, and prop open to the at utmost after, rotatory locking collar 38, drive regulating block 35 and remove to the direction of being close to adjusting station 2, under the shrink of spring 14, make two examination modules 11 be close to each other, thereby drive examination mould body 1 shrink when adjusting pole 3 and keep not rotating, make examination mould body 1 more easily taken out, and keep scale 31 unchangeable, read scale 31 again after taking out examination mould body 1, conveniently obtain centrum spaced data, thereby select the fusion ware of suitable size to implant.

Claims

1. An expandable interbody fusion cage trial, comprising: the test die comprises a test die body (1) and a fixed tube (21), wherein an adjusting platform (2) is arranged at one end of the fixed tube (21), an adjusting rod (3) penetrates through the fixed tube (21), the adjusting rod (3) penetrates through and is in threaded connection with the adjusting platform (2), the test die body (1) comprises two test modules (11), the test modules (11) are in sliding connection with the adjusting platform (2), guide surfaces (13) abutted against the adjusting rod (3) are arranged on the surfaces, close to each other, of the two test modules (11), the two guide surfaces (13) are symmetrically arranged and are obliquely arranged from one end close to the adjusting platform (2) to the end far away from the adjusting platform (2);

the end part of the adjusting rod (3) is provided with an adjusting block (35) which is abutted against the guide surface (13), the adjusting block (35) is in a circular truncated cone shape, and the guide surface (13) is matched with the side wall of the adjusting block (35) to form an inner arc shape;

the adjusting block (35) is provided with a sliding groove (36), the adjusting rod (3) is connected to the sliding groove (36) in a sliding mode, a control rod (37) penetrates through the adjusting rod (3), the control rod (37) is fixed with the adjusting block (35), and a locking piece used for locking the position of the control rod (37) and the adjusting rod (3) is arranged between the control rod (37) and the adjusting rod (3);

the retaining member be with lock sleeve (38) that control lever (37) are connected, adjust pole (3) and keep away from locking groove (39) have been seted up along length direction to the terminal surface of regulating block (35), lock sleeve (38) threaded connection in lock groove (39).

2. The trial of an expandable interbody cage of claim 1, wherein: the side wall of adjusting pole (3) is equipped with scale (31), scale (31) show two try module (11) distance of one side back to each other.

3. The trial of an expandable interbody cage of claim 1, wherein: the distance between the two guide surfaces (13) is gradually reduced from one end close to the adjusting platform (2) to one end far away from the adjusting platform (2).

4. An expandable interbody fusion cage trial as claimed in claim 1, wherein: an elastic piece is connected between the two test modules (11).

5. The trial of an expandable interbody cage of claim 1, wherein: the adjusting platform (2) is provided with a moving groove (22), and the test module (11) is provided with a sliding block (12) which is connected with the moving groove (22) in a sliding manner.

6. The trial of an expandable interbody cage of claim 1, wherein: the outer wall of adjusting pole (3) is equipped with connecting block (32), connecting block (32) cover is established and the joint has turning block (33), turning block (33) are equipped with rotation handle (34).