Position adjusting forceps of interbody fusion cage

Abstract

The utility model relates to the technical field of medical instruments, in particular to a pair of position adjusting forceps of an interbody fusion cage, which comprises an upper forceps part and a lower forceps part which are hinged with each other, the upper clamp part and the lower clamp part are respectively provided with a clamping end and a holding end, the clamping end of the upper clamp part is used for abutting against the upper end of the tail of the interbody fusion cage, the end face, abutting against the interbody fusion cage, of the clamping end of the upper clamp part is an arc-shaped concave face, and the clamping end of the lower clamp part is used for abutting against the lower end of the tail of the interbody fusion cage; and when the holding end of the upper clamp part and the holding end of the lower clamp part are close to each other, the clamping end of the upper clamp part and the clamping end of the lower clamp part are close to each other. According to the utility model, the square bullet fusion cage can be conveniently and quickly placed at the front part of the intervertebral space transversely.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a position adjusting clamp for an intervertebral fusion device. Background Art

[0002] The lumbar spine has a physiological curvature of lordosis. In view of the high risk of anterior surgery, most of the current lumbar surgeries are performed from the posterior approach. When the intervertebral space is processed from the rear, an intervertebral fusion device is placed in the intervertebral space to support and restore the height of the intervertebral space and form a bone formation bridge to achieve the purpose of intervertebral fusion. Currently, most intervertebral fusion devices are divided into square bullet-shaped fusion devices and kidney-shaped fusion devices. In view of the fact that the placement of kidney-shaped fusion devices is prone to nerve and dural sac damage, they are rarely used. The square bullet-shaped fusion device is easy to place and has high safety, but the current surgical instruments make it difficult to clamp the square bullet-shaped fusion device in a horizontal state and place it in the anterior part of the intervertebral space, and as close to the anterior part of the intervertebral space as possible to maintain the physiological curvature of the lumbar spine. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a position adjustment clamp for an intervertebral fusion device, which can conveniently and quickly place a square bullet-shaped fusion device transversely in the front part of the intervertebral space.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a position adjustment forceps for an intervertebral fusion device, comprising an upper forceps part and a lower forceps part hinged to each other; the upper forceps part and the lower forceps part both have a clamping end and a holding end, the clamping end of the upper forceps part is used to abut against the upper end of the tail of the intervertebral fusion device, the end surface of the clamping end of the upper forceps part abutting against the intervertebral fusion device is an arc-shaped concave surface, and the clamping end of the lower forceps part is used to abut against the lower end of the tail of the intervertebral fusion device;

[0005] When the holding end of the upper jaw part and the holding end of the lower jaw part are close to each other, the clamping end of the upper jaw part and the clamping end of the lower jaw part are close to each other.

[0006] Furthermore, a knocking column is provided on the gripping end of the upper jaw.

[0007] Furthermore, a knocking cap is provided at one end of the knocking post away from the upper clamp portion, and a cross-sectional area of ​​the knocking cap is larger than a cross-sectional area of ​​the knocking post.

[0008] Furthermore, the above-mentioned position adjustment forceps for intervertebral fusion device also include a rack, one end of which is hinged on the gripping end of the lower jaw, and the gripping end of the upper jaw is provided with an escape opening for the rack to pass through the upper jaw, and the escape opening is provided with a locking tooth that engages with the rack.

[0009] Furthermore, an elastic member is provided between the gripping end of the upper jaw portion and the gripping end of the lower jaw portion.

[0010] The beneficial effects of the utility model are as follows: an upper jaw and a lower jaw are additionally provided which are hinged to each other, the arc-shaped concave surface of the clamping end of the upper jaw abuts against the upper end of the tail of the intervertebral fusion device, the clamping end of the lower jaw abuts against the lower end of the tail of the intervertebral fusion device, and a distance is left between the bottom of the lower jaw and the lower end of the tail of the intervertebral fusion device, so that the intervertebral fusion device is clamped on the adjusting jaws at an angle. During the operation, the surgeon holds the holding ends of the upper and lower jaws with their hands to send the intervertebral fusion device into the front part of the intervertebral space where the intervertebral fusion device is to be inserted. Then the surgeon applies force to the holding ends of the upper and lower jaws according to actual conditions. Since the arc-shaped concave surface of the clamping end of the upper jaw can provide movement space for the upper end of the tail of the intervertebral fusion device, and a distance is left between the bottom of the lower jaw and the lower end of the tail of the intervertebral fusion device, when the holding ends of the upper and lower jaws approach each other, the intervertebral fusion device will rotate between the clamping ends of the upper and lower jaws, that is, the intervertebral fusion device will be driven to a horizontal posture, thereby facilitating the surgeon to insert the intervertebral fusion device into the front part of the intervertebral space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a position adjustment clamp for an intervertebral fusion device in a specific implementation mode of the utility model;

[0012] Figure 2 This is a schematic diagram of the application structure of a position adjustment clamp for an intervertebral fusion device in a specific implementation mode of the utility model;

[0013] Figure 3 It is a schematic diagram of the main structure of a position adjustment clamp for an intervertebral fusion device in a specific embodiment of the utility model;

[0014] Description of labels:

[0015] 1. Upper clamp; 11. Striking column; 12. Avoidance; 13. Clamping teeth;

[0016] 2. Lower clamp; 3. Percussion cap; 4. Rack; 5. Elastic part; 6. Intervertebral fusion device. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0018] Please refer to Figures 1 to 3As shown, the utility model is a position adjustment forceps for an intervertebral fusion cage, comprising an upper forceps part 1 and a lower forceps part 2 which are hinged to each other; the upper forceps part 1 and the lower forceps part 2 both have a clamping end and a holding end, the clamping end of the upper forceps part 1 is used to abut against the upper end of the tail of the intervertebral fusion cage 6, the end surface of the clamping end of the upper forceps part 1 abutting against the intervertebral fusion cage 6 is an arc-shaped concave surface, and the clamping end of the lower forceps part 2 is used to abut against the lower end of the tail of the intervertebral fusion cage 6;

[0019] When the holding end of the upper jaw part 1 and the holding end of the lower jaw part 2 approach each other, the clamping end of the upper jaw part 1 and the clamping end of the lower jaw part 2 approach each other.

[0020] Working principle: an upper jaw 1 and a lower jaw 2 are hinged to each other, the arc-shaped concave surface of the clamping end of the upper jaw 1 abuts against the upper end of the tail of the intervertebral fusion cage 6, the clamping end of the lower jaw 2 abuts against the lower end of the tail of the intervertebral fusion cage 6, and a distance is left between the bottom of the lower jaw 2 and the lower end of the tail of the intervertebral fusion cage 6, so that the intervertebral fusion cage 6 is clamped on the adjusting jaws at an angle. During the operation, the surgeon holds the holding ends of the upper and lower jaws 1 and 2 with their hands to deliver the intervertebral fusion device 6 to the front part of the intervertebral space where the intervertebral fusion device 6 is to be inserted. Then the surgeon applies force to the holding ends of the upper and lower jaws 1 and 2 according to actual conditions. Since the arc-shaped concave surface of the clamping end of the upper jaw 1 can provide movement space for the upper end of the tail of the intervertebral fusion device 6, and a distance is left between the bottom of the lower jaw 2 and the lower end of the tail of the intervertebral fusion device 6, when the holding ends of the upper and lower jaws 1 and 2 are close to each other, the intervertebral fusion device 6 will rotate between the clamping ends of the upper and lower jaws 1 and 2, that is, the intervertebral fusion device 6 is driven to a horizontal posture, thereby facilitating the surgeon to insert the intervertebral fusion device 6 into the front part of the intervertebral space.

[0021] Furthermore, a striking column 11 is provided on the gripping end of the upper jaw 1 .

[0022] As can be seen from the above description, after the intervertebral fusion cage 6 is initially placed in the front part of the intervertebral space, the surgical operator tilts the position adjustment forceps and then taps the tapping post 11, so that the position adjustment forceps further place the intervertebral fusion cage 6 in the front part of the intervertebral space.

[0023] Please refer to Figures 1 to 3 As shown, further, a knocking cap 3 is provided at one end of the knocking column 11 away from the upper clamp 1, and the cross-sectional area of ​​the knocking cap 3 is larger than the cross-sectional area of ​​the knocking column 11. As can be seen from the above description, since the knocking cap 3 has a larger area, it is helpful for the surgical operator to knock.

[0024] Furthermore, the above-mentioned position adjustment forceps for intervertebral fusion device also include a rack 4, one end of which is hinged on the gripping end of the lower jaw 2, and the gripping end of the upper jaw 1 is provided with an escape opening 12 for the rack 4 to pass through the upper jaw 1, and the escape opening 12 is provided with a latching tooth 13 that engages with the rack 4.

[0025] As can be seen from the above description, the surgical operator can control the rack 4 to pass through the avoidance opening 12 by holding the upper jaw 1 and the lower jaw 2 with the palm force, so that the gripping end of the upper jaw 1 and the gripping end of the lower jaw 2 are close to each other, and the meshing of the rack 4 and the latching teeth 13 can ensure that the intervertebral fusion device 6 can be effectively clamped when the surgical operator does not operate the upper jaw 1 and the lower jaw 2. When the intervertebral fusion device 6 needs to be released, the rack 4 is swung to separate the rack 4 from the latching teeth 13, so that the surgical operator can control the gripping end of the upper jaw 1 and the gripping end of the lower jaw 2 to move away from each other.

[0026] Furthermore, an elastic member 5 is provided between the gripping end of the upper jaw portion 1 and the gripping end of the lower jaw portion 2 .

[0027] It can be seen from the above description that the elastic member 5 can enhance the gripping feeling of the surgical operator when holding the gripping end of the upper jaw part 1 and the gripping end of the lower jaw part 2 .

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A position adjustment forceps for an intervertebral fusion cage, characterized in that: It comprises an upper jaw (1) and a lower jaw (2) which are hinged to each other; the upper jaw (1) and the lower jaw (2) both have a clamping end and a holding end; the clamping end of the upper jaw (1) is used to abut against the upper end of the tail of the intervertebral fusion device (6); the end surface of the clamping end of the upper jaw (1) abutting against the intervertebral fusion device (6) is an arc-shaped concave surface; the clamping end of the lower jaw (2) is used to abut against the lower end of the tail of the intervertebral fusion device (6); When the gripping end of the upper jaw part (1) and the gripping end of the lower jaw part (2) approach each other, the clamping end of the upper jaw part (1) and the clamping end of the lower jaw part (2) approach each other.

2. The position adjustment forceps for intervertebral fusion cage according to claim 1, characterized in that: A striking column (11) is provided on the gripping end of the upper clamp part (1).

3. The position adjustment forceps for intervertebral fusion cage according to claim 2, characterized in that: A knocking cap (3) is provided at one end of the knocking column (11) away from the upper clamp portion (1), and the cross-sectional area of ​​the knocking cap (3) is larger than the cross-sectional area of ​​the knocking column (11).

4. The position adjustment forceps for intervertebral fusion cage according to claim 1, characterized in that: The invention also comprises a rack (4), one end of which is hinged on the gripping end of the lower jaw (2); the gripping end of the upper jaw (1) is provided with an escape opening (12) for the rack (4) to pass through the upper jaw (1); and a latching tooth (13) is provided in the escape opening (12) for meshing with the rack (4).

5. The position adjustment forceps for intervertebral fusion cage according to claim 1, characterized in that: An elastic member (5) is provided between the gripping end of the upper jaw (1) and the gripping end of the lower jaw (2).

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