CN217186603U

CN217186603U - Orthopedic fusion cage holding tool

Info

Publication number: CN217186603U
Application number: CN202220363422.5U
Authority: CN
Inventors: 王雄飞; 曹洁武; 赵天明
Original assignee: Kanghui Medical Innovation Co ltd
Current assignee: Kanghui Medical Innovation Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-08-16
Anticipated expiration: 2032-02-22

Abstract

The utility model relates to an orthopedic fusion cage holding tool, which comprises a sleeve, a locking rod and a handle, wherein the locking rod is arranged in the sleeve, and the front end of the locking rod is provided with a clamping head positioned outside the sleeve; the handle is arranged at the rear end of the sleeve, and a locking mechanism connected with the rear end of the locking rod is arranged in the handle; the locking mechanism can drive the locking rod to move axially in the sleeve, so that the clamping head is clamped or loosened. The utility model discloses can realize the quick locking of holding head and loosen, convenient operation is simple, and locking state is stable, avoids appearing the integration ware and is difficult to implant or hold the problem of getting and droing, has reduced the operation degree of difficulty and the risk of operation.

Description

Orthopedic fusion cage holding tool

Technical Field

The utility model belongs to orthopedics medical instrument field, concretely relates to orthopedics fuses ware and holds instrument of getting.

Background

At present, the holding and taking tool of the fusion cage used clinically mostly adopts threaded connection or nut rotation locking, the holding and taking tool with the structure is not only unstable in locking, and the risk of being difficult to implant or holding and taking off is very easy to occur in the operation process, the difficulty of the operation is increased, the operation time is prolonged, and the operation failure is possibly caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an orthopedics fuses ware and holds instrument of getting to solve the complicated problem of fusion ware clamping process.

The utility model discloses an orthopedics fuses ware and holds to get instrument is realized like this:

an orthopedic fusion cage holding tool, comprising

The sleeve is provided with a plurality of grooves,

the locking rod is arranged in the sleeve, and a clamping head positioned outside the sleeve is arranged at the front end of the locking rod;

the handle is arranged at the rear end of the sleeve, and a locking mechanism connected with the rear end of the locking rod is arranged in the handle;

the locking mechanism can drive the locking rod to axially move in the sleeve, so that the clamping head is locked or opened.

Furthermore, the clamping head comprises at least two clamping jaws, and the clamping jaws and the locking rod are provided with tapered transition parts.

Further, the locking mechanism comprises a sliding component, a connecting rod and a pull rod,

the sliding component is connected with the locking rod,

two ends of the connecting rod are respectively hinged with the sliding component and the pull rod;

the front end of the pull rod is hinged on the handle;

the rear end of the pull rod can rotate towards or away from the handle, and the sliding assembly and the locking rod are driven to move in the axial direction through the pull rod.

Further, the sliding assembly comprises a sliding sleeve, a sliding block and a sliding rod;

the sliding block is fixedly sleeved outside the sliding sleeve and is hinged with the connecting rod;

the front end of the sliding rod extends into the sliding sleeve and is connected with the sliding sleeve, and the rear end of the locking rod penetrates through the sliding sleeve and is connected with the sliding rod.

Furthermore, the rear end of the locking rod extends into the sliding rod and is fixed by a clamp spring.

Furthermore, an adjusting nut with an external thread arranged on the outer surface is installed at the front end of the sliding rod, and an internal thread meshed with the external thread is arranged on the inner wall of the sliding sleeve.

Furthermore, a spring is sleeved at the rear end of the sliding rod, and the rear end of the spring abuts against a screw plug arranged at the rear end of the handle.

Furthermore, the bottom of slider is provided with the constant head tank, the bottom of handle install with constant head tank complex locating pin.

Furthermore, the rear side of the pull rod is provided with a locking block arranged on the handle, and the rear end of the pull rod can be buckled on the locking block.

Furthermore, a return spring is arranged on the rear side of the locking block.

After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:

the utility model discloses a locking mechanism's setting can drive the axial displacement of check lock lever in the sleeve, realizes the quick clamping of holding head and unclamps, and convenient operation is simple, and locking state is stable, avoids appearing the integration ware and is difficult to implant or hold the problem of getting and droing, has reduced the operation degree of difficulty and the failure risk of operation.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a block diagram of an orthopedic fusion cage holding tool in an open position in accordance with a preferred embodiment of the present invention;

FIG. 2 is a block diagram of the handle portion of the preferred embodiment of the present invention with the orthopedic cage holding tool in a locked position;

FIG. 3 is a view of the interior of the handle with the preferred embodiment of the orthopedic fusion cage holding tool of the present invention in an open position;

FIG. 4 is a cross-sectional view of the handle portion of the preferred embodiment of the orthopedic fusion cage holding tool of the present invention in a locked position;

FIG. 5 is a cross-sectional view of the handle portion of the preferred embodiment of the orthopedic cage holding tool of the present invention in an expanded state;

in the figure: the clamping device comprises a sleeve 1, a locking rod 2, a handle 3, a clamping head 4, a conical transition portion 5, a connecting rod 6, a pull rod 7, a locking groove 7-1, a sliding sleeve 8, a sliding block 9, a positioning groove I9-1, a positioning groove II 9-2, a sliding rod 10, a screwdriver notch 10-1, a convex ring 10-2, a clamp spring 11, an adjusting nut 12, a guide pin 13, a spring 14, a plug screw 15, a positioning pin 16, a locking block 17, a locking protrusion 17-1 and a reset spring 18.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, a holding tool for an orthopedic fusion cage comprises a sleeve 1, a locking rod 2 and a handle 3, wherein the locking rod 2 is installed in the sleeve 1, and a clamping head 4 positioned outside the sleeve 1 is arranged at the front end of the locking rod 2; the handle 3 is arranged at the rear end of the sleeve 1, and a locking mechanism connected with the rear end of the locking rod 2 is arranged in the handle 3; the locking mechanism can drive the locking rod 2 to move axially in the sleeve 1, so that the clamping head 4 is locked or opened.

In order to accomplish the locking or opening of the gripping head 4, the gripping head 4 comprises at least two gripping jaws, and the gripping jaws are provided with a conical transition 5 with the locking bar 2.

In the present embodiment, the gripping head 4 comprises two gripping jaws.

The external diameter of one end of the conical transition part 5 connected with the clamping jaw is large, and the external diameter of one end connected with the locking rod 2 is small.

Two clamping jaws are in the state of opening during initial condition, and when pressing from both sides tightly, locking mechanical system drives check lock lever 2 and moves backward on its axial direction, and toper transition portion 5 moves to sleeve 1 along check lock lever 2 this moment, through the continuous shrink effect of sleeve 1 to toper transition portion 5 to drive the clamping jaw and remove towards the axle center direction of check lock lever 2, realize the locking of centre gripping head 4.

The locking degree of the clamping head 4 is adjusted by adjusting the degree of the conical transition part 5 entering the sleeve 1 so as to adapt to the holding, taking and locking of different fusion devices.

In order to drive the locking rod 2 to move in the axial direction, the locking mechanism comprises a sliding component, a connecting rod 6 and a pull rod 7, the sliding component is connected with the locking rod 2, and two ends of the connecting rod 6 are respectively hinged with the sliding component and the pull rod 7; the front end of the pull rod 7 is hinged on the handle 3.

Wherein the sliding component is positioned in the handle 3, and the connecting rods 6 are provided with two and are oppositely arranged at two sides of the sliding component. The rear end of the pull rod 7 can rotate towards or away from the handle 3, and the sliding assembly and the locking rod 2 are driven to move in the axial direction through the pull rod 7.

Specifically, the sliding assembly, the connecting rod 6 and the pull rod 7 form a slider-crank mechanism, namely when the pull rod 7 is pulled towards the handle 3, the connecting rod 6 can push the sliding assembly to move backwards, so that the locking rod 2 can be driven to move backwards in the axial direction, the locking of the clamping head 4 is realized, and the fusion cage is held and taken; the pull rod 7 is loosened and rotated to be reset in the direction far away from the handle 3, and the connecting rod 6 can drive the sliding assembly to move forwards, so that the locking rod 2 is driven to move forwards in the axial direction, the clamping head 4 is opened, and the fusion device is released.

In order to drive the locking rod 2 to move through the sliding assembly, the sliding assembly comprises a sliding sleeve 8, a sliding block 9 and a sliding rod 10; the sliding block 9 is fixedly sleeved outside the sliding sleeve 8 and is hinged with the connecting rod 6.

Specifically, slider 9 is used for articulated connecting rod 6, and two connections articulate the both sides at slider 9 relatively promptly to form slider-crank mechanism, and slider 9 is fixed to be nested outside sliding sleeve 8, can drive sliding sleeve 8 through slider 9 and remove.

Preferably, a limiting shaft arranged on the inner wall of the handle 3 is arranged above the sliding sleeve 8 and used for limiting the pressing degree of the pull rod 7.

The front end of the sliding rod 10 extends into the sliding sleeve 8 and is connected with the sliding sleeve 8, and the rear end of the locking rod 2 penetrates through the sliding sleeve 8 and is connected with the sliding rod 10.

When the sliding sleeve 8 is driven by the sliding block 9 to move, the sliding rod 10 can be driven by the sliding sleeve 8 to move, so that the locking rod 2 can move in the axial direction. In order to fix the locking rod 2 to the sliding rod 10, the rear end of the locking rod 2 extends into the sliding rod 10 and is fixed by the clamp spring 11.

Specifically, the front end of the sliding rod 10 is provided with a locking ring opening, the rear end of the locking rod 2 is provided with a locking groove corresponding to the locking ring opening, the clamp spring 11 is installed in the locking ring opening, and the clamp spring 11 penetrates through the locking ring opening to be matched in the locking groove, so that the sliding rod 10 and the locking rod 2 are connected.

In order to realize the connection between the sliding rod 10 and the sliding sleeve 8, an adjusting nut 12 with external threads arranged on the outer surface is installed at the front end of the sliding rod 10, and internal threads meshed with the external threads are arranged on the inner wall of the sliding sleeve 8.

The adjusting nut 12 is connected to the slide 10, so that the connection of the slide 10 to the sliding sleeve 8 can be realized by means of the adjusting nut 12.

And through the setting of adjusting nut 12, through adjusting the screw thread fit length between adjusting nut 12 and the sliding sleeve 8, realize the regulation of locking degree.

Preferably, in order to adjust the screw-fit length of the adjusting nut 12 and the sliding sleeve 8 conveniently, the rear end of the sliding rod 10 is provided with a screwdriver notch 10-1, and the rear end of the handle 3 is provided with a threaded hole, at this time, the sliding rod 10 and the adjusting nut 12 can be rotated by using the screwdriver to fit in the screwdriver notch 10-1, so as to adjust the screw-fit length between the adjusting nut 12 and the sliding sleeve 8, that is, the sliding rod 10 is rotated to move forward with the adjusting nut 12, so that the screw-fit length between the adjusting nut 12 and the sliding sleeve 8 can be increased, and conversely, the screw-fit length is decreased.

Specifically, in the locking process, the backward movement distance of the sliding sleeve 8 is fixed, and the position of the locking rod 2 in the initial state (namely, the loosening state) can be adjusted to realize the adjustment of the locking degree.

When the thread matching length of the sliding sleeve 8 and the adjusting nut 12 is increased, the initial position of the opposite locking rod 2 moves forwards, so that the backward moving degree of the locking rod 2 can be reduced in the locking process, and the locking degree of the clamping head 4 is reduced;

when the thread fit length of the sliding sleeve 8 and the adjusting nut 12 is reduced, the initial position of the opposite locking rod 2 moves backwards, and the backward moving degree of the locking rod 2 can be increased in the locking process, so that the locking degree of the clamping head 4 is improved.

Preferably, in order to achieve the guiding when the sliding sleeve 8 is adjusted with the adjusting nut 12, a guiding pin 13 fitted at the non-threaded surface of the adjusting nut 12 is installed on the sliding sleeve 8.

In order to realize the forward movement and the return of the locking rod 2 in the unlocking and locking state, the rear end of the sliding rod 10 is sleeved with a spring 14, and the rear end of the spring 14 abuts against a screw plug 15 arranged at the rear end of the handle 3.

Specifically, a screw plug 15 is installed in a threaded hole at the rear end of the handle 3, a convex ring 10-2 is arranged outside the slide rod 10, and a spring 14 is arranged between the convex ring 10-2 and the screw plug 15.

In the locking state, the sliding rod 10 moves backwards, the spring 14 is extruded through the convex ring 10-2, and when the spring 14 is loosened, the sliding rod 10 and the locking rod 2 are pushed to move forwards and reset.

In order to realize the positioning of the locking and opening states, the bottom of the sliding block 9 is provided with a positioning groove, and the bottom of the handle 3 is provided with a positioning pin 16 matched with the positioning groove.

Specifically, the positioning groove comprises a positioning groove I9-1 and a positioning groove II 9-2 located on the front side of the positioning groove I9-1, wherein the positioning groove I9-1 is an arc-shaped positioning groove and used for positioning in an open state, and when the clamping head 4 is opened, a ball at the end part of the positioning pin 16 is clamped in the positioning groove I9-1; the positioning groove II 9-2 is of a strip groove-shaped structure and is used for positioning in the locking process, when locking is started, the sliding block 9 continuously moves backwards, the ball of the positioning pin 16 moves out of the positioning groove I9-1, is matched into the positioning groove II 9-2, and continuously moves relative to the sliding block 9 in the positioning groove II 9-2 until the locking state is reached.

In order to lock the locked state, a lock block 17 attached to the handle 3 is provided on the rear side of the pull rod 7, and the rear end of the pull rod 7 can be engaged with the lock block 17.

Specifically, the locking block 17 is fixed on the handle 3 by a bolt, the rear end of the pull rod 7 is provided with a locking groove 7-1, the front end of the locking block 17 is provided with a locking bulge 17-1 matched with the locking groove 7-1, and the pull rod 7 can be locked on the locking bulge 17-1.

In order to facilitate unlocking of the locked state of the drawbar 7, a return spring 18 is mounted to the rear side of the locking block 17.

The locking block 17 is pulled backwards, the return spring 18 is compressed, the pull rod 7 can be unlocked, the locking block 17 is loosened, the locking block can move forwards and return under the action of the return spring 18, and the pull rod 7 can be conveniently locked next time.

During the operation, the locking degree can be firstly adjusted according to the type of the fusion cage. When locking the fusion cage, with the cooperation of holding head 4 on the fusion cage, stir pull rod 7 to the direction of handle 3, check lock lever 2 moves backward on axial direction, compression spring 14, locks pull rod 7 on locking block 17 then, can realize the locking centre gripping of fusion cage. When the fusion cage is loosened, the locking block 17 is shifted backwards, the pull rod 7 is loosened, the locking rod 2 is reset under the action of the spring 14, the clamping head 4 is opened, and the fusion cage can be loosened.

The utility model discloses a hold instrument of getting simple structure, convenient operation has fully utilized the mechanical engineering principle, has realized having improved operation efficiency to the stable centre gripping of fusing the ware, has reduced the risk of operation failure.

Specifically, the utility model discloses a hold and get instrument still includes following advantage:

(1) the pull rod 7 type locking process can be easily realized in the process of holding the handle 3, the human engineering principle is met, the fusion cage can be clamped and locked or loosened by one-hand operation in the operation process, and the use is convenient and simple;

(2) through the arrangement of the crank-slider mechanism, the pulling of the pull rod 7 can be converted into a larger pushing and pulling force on the slider 9, so that the clamping head 4 has a more ideal locking force, and meanwhile, the locking process is completed through one-step operation, the working strength of a doctor is reduced, and the operation flow of an operation is simplified;

(3) the locking force can be adjusted and selected according to different implant requirements, so that the damage of the implant caused by overlarge locking force or the implant cannot be stably clamped due to too small locking force is avoided, and the normal operation is ensured;

(4) the locking rod 2 is detachably matched with the locking mechanism, the locking rod 2 with different forms and specifications of clamping heads 4 can be selected according to the needs of the fusion cage, the operation is convenient, the number of tools is reduced, and the cost is saved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An orthopedic fusion cage holding tool, which is characterized by comprising

A sleeve (1) is arranged in the sleeve,

the locking rod (2) is arranged in the sleeve (1), and a clamping head (4) positioned outside the sleeve (1) is arranged at the front end of the locking rod (2);

the handle (3) is arranged at the rear end of the sleeve (1), and a locking mechanism connected with the rear end of the locking rod (2) is arranged in the handle (3);

the locking mechanism can drive the locking rod (2) to move axially in the sleeve (1), so that the clamping head (4) is locked or opened.

2. The orthopaedic cage holding tool according to claim 1, wherein the clamping head (4) comprises at least two clamping jaws and the locking lever (2) are provided with a conical transition (5).

3. The orthopaedic cage holding tool according to claim 1, wherein the locking mechanism comprises a sliding assembly, a linkage (6) and a pull rod (7),

the sliding component is connected with the locking rod (2),

two ends of the connecting rod (6) are respectively hinged with the sliding component and the pull rod (7);

the front end of the pull rod (7) is hinged on the handle (3);

the rear end of the pull rod (7) can rotate towards or away from the handle (3) and drives the sliding assembly and the locking rod (2) to move in the axial direction of the sliding assembly and the locking rod through the pull rod (7).

4. The orthopaedic cage holding tool according to claim 3, wherein the sliding assembly comprises a sliding sleeve (8), a sliding block (9) and a sliding bar (10);

the sliding block (9) is fixedly sleeved outside the sliding sleeve (8) and is hinged with the connecting rod (6);

the front end of the sliding rod (10) extends into the sliding sleeve (8) and is connected with the sliding sleeve (8), and the rear end of the locking rod (2) penetrates through the sliding sleeve (8) and is connected with the sliding rod (10).

5. The tool for holding an orthopedic cage according to claim 4, characterized in that the rear end of the locking rod (2) extends into the sliding rod (10) and is fixed by means of a circlip (11).

6. The orthopedic fusion cage holding tool according to claim 4, characterized in that the front end of the sliding rod (10) is provided with an adjusting nut (12) with an external thread on the outer surface, and the inner wall of the sliding sleeve (8) is provided with an internal thread engaged with the external thread.

7. The tool for holding an orthopedic cage according to claim 4, characterized in that the rear end of the sliding rod (10) is sleeved with a spring (14), and the rear end of the spring (14) abuts against a screw plug (15) mounted on the rear end of the handle (3).

8. The orthopaedic cage holding tool according to claim 4, wherein the bottom of the slider (9) is provided with a positioning slot, and the bottom of the handle (3) is fitted with a positioning pin (16) cooperating with the positioning slot.

9. The orthopaedic cage holding tool according to claim 5, wherein the rear side of the tie rod (7) is provided with a locking block (17) mounted on the handle (3), the rear end of the tie rod (7) being snappable on the locking block (17).

10. The orthopaedic cage holding tool according to claim 9, wherein the rear side of the locking block (17) is fitted with a return spring (18).