Spinous process clamp and navigation system

Abstract

The utility model relates to a spinous process clip and navigation system.The spinous process clip comprises a first clamping part, a second clamping part and an adjusting bolt, the first clamping part comprises a first clamping jaw and a first connecting body, and the second clamping part is hinged to the first connecting body; the adjusting bolts are arranged on the first clamping jaw and the second clamping part and used for adjusting the included angle between the first clamping jaw and the second clamping part, and the direction, facing the first clamping jaw, of the first connecting body is the first direction. The included angle between the axis of the adjusting bolt and the first direction is larger than a preset angle. According to the spinous process clamp and the navigation system, the included angle between the axis of the adjusting bolt and the first direction is larger than the preset angle, so that the adjusting bolt points to the direction of the first clamping jaw along the second clamping part, a doctor cannot be blocked by the first connecting body when operating the adjusting bolt, and the adjusting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a spinous process clamp device and a navigation system. Background Art

[0002] When a patient has diseases such as spinal fractures and scoliosis, spinal surgery needs to be performed on the patient to achieve symptomatic treatment. During this surgical process, it is necessary to locate the spinous process, which is achieved by cooperating a spinous process clamp with a navigation system. Among them, when positioning the spinous process, it is necessary to clamp the spinous process with the spinous process clamp to prevent displacement between the spinous process and the spinous process clamp from affecting the positioning result.

[0003] When the existing spinous process clamp clamps the spinous process, the space between the adjusting bolt on the spinous process clamp and other components on the spinous process clamp is small, which easily blocks the doctor's adjustment operation of the bolt and reduces the clamping efficiency. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a spinous process clamp and a navigation system, which can improve the clamping efficiency.

[0005] To achieve the above object, the utility model provides a spinous process clamp, including a first clamping portion, a second clamping portion and an adjusting bolt. The first clamping portion includes a first clamping jaw and a first connecting body. The second clamping portion is hinged to the first connecting body. The adjusting bolt is arranged on the first clamping jaw and the second clamping portion, and the adjusting bolt is used to adjust the included angle between the first clamping jaw and the second clamping portion. The direction of the first connecting body towards the first clamping jaw is the first direction, and the included angle between the axis of the adjusting bolt and the first direction is greater than a preset angle.

[0006] In an embodiment of the utility model, along the first direction, the distance between the axis of the adjusting bolt and the first connecting body is greater than a first preset distance.

[0007] In an embodiment of the utility model, the second clamping portion includes a second clamping jaw and a second connecting body. The second connecting body is hinged to the first connecting body. The adjusting bolt is arranged on the first clamping jaw and the second clamping jaw, and the adjusting bolt is used to adjust the included angle between the first clamping jaw and the second clamping jaw.

[0008] In an embodiment of the utility model, a clamping space is formed between the first clamping jaw and the second clamping jaw, and clamping teeth are arranged on the inner sides of the first clamping jaw and the second clamping jaw facing the clamping space.

[0009] In an embodiment of the present utility model, the clamping teeth on the first clamping jaw and the clamping teeth on the second clamping jaw are both arranged in rows to form a plurality of rows of clamping teeth, and the rows of clamping teeth on the first clamping jaw and the rows of clamping teeth on the second clamping jaw are arranged in a staggered manner.

[0010] In an embodiment of the present utility model, the adjusting bolt includes a handle portion, a threaded portion, and a connecting portion arranged in sequence. A threaded hole is provided on the second clamping jaw, the threaded portion of the adjusting bolt is connected in the threaded hole, a sliding groove is provided on the first clamping jaw, and the connecting portion is slidably arranged in the sliding groove. The sliding direction of the connecting portion in the sliding groove is not parallel to the axis of the adjusting bolt.

[0011] In an embodiment of the present utility model, the connecting portion is a sliding ball, the sliding groove is cylindrical, and the sliding ball has a sliding degree of freedom along the sliding direction in the sliding groove and a rotational degree of freedom in the sliding groove.

[0012] In an embodiment of the present utility model, the distance between the end of the first clamping jaw far from the first connecting body and the axis of the adjusting bolt is greater than a second preset distance.

[0013] A navigation system is provided, including a connecting rod and the above-mentioned spinous process clip. The connecting rod extends along a first direction, and the connecting rod is arranged at the end of the first connecting body far from the first clamping jaw.

[0014] In an embodiment of the present utility model, a positioning mechanism is provided at the end of the connecting rod far from the first connecting body, and a positioning mark is provided on the positioning mechanism.

[0015] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0016] For the spinous process clip and the navigation system of the present utility model, since the adjusting bolt is arranged on the first clamping jaw, the axis direction of the adjusting bolt on the first clamping jaw forms an angle with the first direction, and the angle between the axis of the adjusting bolt of the present application and the first direction is greater than a preset angle. When the spinous process clip device is in use, the angle between the axis of the adjusting bolt and the first direction is greater than the preset angle, so that the adjusting bolt points from the second clamping portion to the first clamping jaw, facilitating the doctor to operate the adjusting bolt without being blocked by the first connecting body, and improving the adjusting efficiency and the clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural view of the spinous process clamp of the present utility model;

[0019] Figure 2 is a front view of the spinous process clamp of the present utility model;

[0020] Figure 3 is a top view of the spinous process clamp of the present utility model;

[0021] Figure 4 is a schematic structural view of the adjusting bolt of the spinous process clamp of the present utility model;

[0022] Figure 5 is a schematic structural view of the preset angle, first preset distance, and second preset distance of the spinous process clamp of the present utility model;

[0023] Figure 6 is a schematic structural view of the navigation system of the present utility model.

[0024] Description of the reference numerals in the specification drawings:

[0025] 1. First clamping portion; 2. Second clamping portion; 3. Adjusting bolt; 4. First jaw; 5. First connection body; 6. Second jaw; 7. Second connection body; 8. Clamping space; 9. Clamping teeth; 10. Clamping tooth row; 11. Handle portion; 12. Threaded portion; 13. Connection portion; 14. Threaded hole; 15. Sliding groove; 16. Connecting rod; 17. Positioning mechanism. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] Refer to Figures 1 to 6As shown in the figure, the spinous process clip device of the present utility model includes a first clamping portion 1, a second clamping portion 2, and an adjusting bolt 3. The first clamping portion 1 includes a first clamping jaw 4 and a first connecting body 5. The second clamping portion 2 is hinged to the first connecting body 5. The adjusting bolt 3 is disposed on the first clamping jaw 4 and the second clamping portion 2, and the adjusting bolt 3 is used to adjust the angle between the first clamping jaw 4 and the second clamping portion 2. The direction of the first connecting body 5 towards the first clamping jaw 4 is the first direction, and the angle between the axis of the adjusting bolt 3 and the first direction is greater than a preset angle.

[0029] The spinous process clip device of the present application includes a first clamping portion 1, a second clamping portion 2, and an adjusting bolt 3. The first clamping portion 1 and the second clamping portion 2 cooperate to clamp the spinous process during a spinal operation. The adjusting bolt 3 is used to adjust the angle between the first clamping portion 1 and the second clamping portion 2 to achieve clamping and releasing of the spinous process. Specifically, the first clamping portion 1 includes a first clamping jaw 4 and a first connecting body 5. The first clamping jaw 4 and the first connecting body 5 are integrally formed or connected to each other. Preferably, the first clamping jaw 4 and the first connecting body 5 are integrally formed. The first clamping jaw 4 and the second clamping portion 2 cooperate to clamp the spinous process. The second clamping portion 2 is hinged to the first connecting body 5. Therefore, the second clamping portion 2 has a rotation function relative to the first clamping jaw 4. The adjusting bolt 3 is disposed on the first clamping jaw 4 and the second clamping portion 2 to achieve angle adjustment between the first clamping portion 1 and the second clamping portion 2 through the adjusting bolt 3. Among them, as Figure 1 shown, the direction of the first connecting body 5 towards the first clamping jaw 4 is the first direction, that is, the Z direction. Since the adjusting bolt 3 is disposed on the first clamping jaw 4, the axis direction of the adjusting bolt 3 on the first clamping jaw 4 forms an angle with the first direction, and the angle between the axis of the adjusting bolt 3 of the present application and the first direction is greater than a preset angle α. As Figure 5 shown, the preset angle α is selected as 45° - 135°. Preferably, the preset angle α is selected as 90°, so that when the spinous process clip device is in use, the angle between the axis of the adjusting bolt 3 and the first direction is greater than 90°, so that the adjusting bolt 3 points from the second clamping portion 2 towards the first clamping jaw 4, which is convenient for doctors not to be blocked by the first connecting body 5 when operating the adjusting bolt 3, and improves the adjustment efficiency and the clamping efficiency.

[0030] In one embodiment, along the first direction, the distance between the axis of the adjusting bolt 3 and the first connecting body 5 is greater than a first preset distance.

[0031] As Figure 5As shown, along the first direction, a first preset distance L1 is set between the axis of the adjusting bolt 3 and the first connecting body 5 (the distance can be calculated at the hinge axis of the first connecting body 5). The first preset distance is selected from 10 mm to 20 mm. Preferably, the first preset distance is selected as 15 mm, so that the distance between the axis of the adjusting bolt 3 and the first connecting body 5 is greater than the first preset distance, leaving sufficient operating space for the doctor to operate the adjusting bolt 3, facilitating the doctor's operation and improving the adjustment efficiency.

[0032] In one of the embodiments, the second clamping portion 2 includes a second jaw 6 and a second connecting body 7. The second connecting body 7 is hinged to the first connecting body 5. The adjusting bolt 3 is arranged on the first jaw 4 and the second jaw 6, and the adjusting bolt 3 is used to adjust the included angle between the first jaw 4 and the second jaw 6.

[0033] As Figure 1 shown, the second clamping portion 2 includes a second jaw 6 and a second connecting body 7. The second jaw 6 is used to cooperate with the first jaw 4 to complete the clamping action on the spinous process. The second connecting body 7 is used to be hinged to the first connecting body 5 to realize the relative rotation movement between the first jaw 4 and the second jaw 6, so as to realize the clamping and releasing of the spinous process. Among them, the second jaw 6 and the second connecting body 7 are integrally formed or connected to each other. Preferably, the second jaw 6 and the second connecting body 7 are integrally formed. Specifically, the second connecting body 7 is hinged to the first connecting body 5. Since the first connecting body 5 is integrally formed with the first jaw 4 and the second connecting body 7 is integrally formed with the second jaw 6, when the first connecting body 5 rotates around the second connecting body 7, the first jaw 4 and the second jaw 6 can rotate around the hinge axis of the first connecting body 5 and the second connecting body 7 to realize the adjustment of the angle between the first jaw 4 and the second jaw 6. Further, the adjusting bolt 3 is arranged on the first jaw 4 and the second jaw 6, and the adjusting bolt 3 is used to adjust the included angle between the first jaw 4 and the second jaw 6. Therefore, when it is necessary to adjust the included angle between the first jaw 4 and the second jaw 6, it can be realized by adjusting the adjusting bolt 3.

[0034] In one of the embodiments, a clamping space 8 is formed between the first jaw 4 and the second jaw 6, and clamping teeth 9 are arranged on the inner sides of the first jaw 4 and the second jaw 6 facing the clamping space 8.

[0035] As Figure 1 and Figure 2As shown, a clamping space 8 is formed between the first jaw 4 and the second jaw 6. When the first jaw 4 and the second jaw 6 clamp the spinous process, the spinous process is located within the clamping space 8. Further, clamping teeth 9 are provided on the inner surfaces of the first jaw 4 and the second jaw 6 facing the clamping space 8. The clamping teeth 9 on the inner surface of the first jaw 4 and the clamping teeth 9 on the inner surface of the second jaw 6 cooperate to clamp the spinous process, improving the clamping stability. The clamping teeth 9 can be pointed teeth, strip teeth, etc.

[0036] In one embodiment, the clamping teeth 9 on the first jaw 4 and the clamping teeth 9 on the second jaw 6 are both arranged in rows to form a plurality of clamping tooth rows 10, and the clamping tooth rows 10 on the first jaw 4 are arranged in a staggered manner with the clamping tooth rows 10 on the second jaw 6.

[0037] As Figure 1 and Figure 2 shown, a plurality of clamping teeth 9 are provided on the first jaw 4, and the clamping teeth 9 on the first jaw 4 form a plurality of clamping tooth rows 10 (as shown within the dashed boxes in Figure 1 and Figure 6 ); a plurality of clamping teeth 9 are provided on the second jaw 6, and the clamping teeth 9 on the second jaw 6 form a plurality of clamping tooth rows 10. The clamping tooth rows 10 on the first jaw 4 are arranged in a staggered manner with the clamping tooth rows 10 on the second jaw 6. That is, any clamping tooth row 10 on the first jaw 4 is correspondingly arranged between two clamping tooth rows 10 on the second jaw 6, and any clamping tooth row 10 on the second jaw 6 is correspondingly arranged between two clamping tooth rows 10 on the first jaw 4, so as to improve the clamping stability of the spinous process.

[0038] In one embodiment, the adjusting bolt 3 includes a handle portion 11, a threaded portion 12, and a connecting portion 13 arranged in sequence. A threaded hole 14 is provided on the second jaw 6, the threaded portion 12 of the adjusting bolt 3 is connected in the threaded hole 14, a sliding groove 15 is provided on the first jaw 4, and the connecting portion 13 is slidably arranged in the sliding groove 15, and the sliding direction of the connecting portion 13 in the sliding groove 15 is not parallel to the axis of the adjusting bolt 3.

[0039] As Figure 3 and Figure 4As shown, the adjusting bolt 3 includes a handle portion 11, a threaded portion 12, and a connecting portion 13 arranged in sequence. The handle portion 11 is used for the rotational operation of the doctor, or a wrench hole is provided on the handle portion 11, and the handle portion 11 is driven to rotate by a corresponding wrench; a threaded hole 14 is provided on the second jaw 6, and the threaded portion 12 on the adjusting bolt 3 is used to cooperate with the threaded hole 14 to achieve screw drive; the connecting portion 13 is used to connect with the first jaw 4 to drive the second jaw 6 to rotate relative to the first jaw 4 through the connecting portion 13. Specifically, the threaded portion 12 of the adjusting bolt 3 is screwed into the threaded hole 14, the handle portion 11 of the adjusting bolt 3 is located outside the second jaw 6 away from the clamping space 8, a sliding groove 15 is provided on the first jaw 4, the connecting portion 13 of the adjusting bolt 3 is arranged in the sliding groove 15, and the sliding portion of the adjusting bolt 3 is slidably arranged in the sliding groove 15. Therefore, the connecting portion 13 of the adjusting bolt 3 makes a sliding movement along the length direction of the sliding groove in the sliding groove. Further, the sliding direction of the sliding groove 15 is not parallel to the axis of the adjusting bolt 3. Preferably, the angle between the sliding direction of the sliding groove and the axis of the adjusting bolt 3 is greater than 90°.

[0040] In one embodiment, the connecting portion 13 is a sliding ball, the sliding groove 15 is cylindrical, and the sliding ball has a sliding degree of freedom along the sliding direction in the sliding groove 15 and a rotational degree of freedom in the sliding groove 15.

[0041] The connecting portion 13 of the adjusting bolt 3 is a sliding ball, and the sliding groove 15 is cylindrical. Preferably, the sliding groove 15 is cylindrical, as Figure 1 and Figure 3 shown, the sliding groove 15 is a spherical groove with a sliding length. Specifically, the sliding ball is constrained in the sliding groove 15 and the sliding ball has a sliding degree of freedom along the sliding direction in the sliding groove 15 and a rotational degree of freedom in the sliding groove 15. That is, the movement of the sliding ball in the sliding groove 15 is a composite movement of a linear movement along the sliding direction of the sliding groove 15, a rotational movement around the axis of the adjusting bolt 3, and a rotational movement around the Z-axis passing through the center of the sliding ball.

[0042] In one embodiment, the distance between the end of the first jaw 4 away from the first connecting body 5 and the axis of the adjusting bolt 3 is greater than a second preset distance.

[0043] As Figure 5 shown, the distance between the end of the first jaw 4 away from the first connecting body 5 and the axis of the adjusting bolt 3 is greater than the second preset distance L2. The second preset distance L2 is selected to be 30 mm - 40 mm. Preferably, the second preset distance L2 is selected to be 36 mm, so that the end of the first jaw 4 away from the first connecting body 5 has sufficient distance to clamp the spinous process, improving the clamping effectiveness of the spinous process and the convenience of clamping.

[0044] Embodiment 2

[0045] A navigation system is provided. The navigation system includes the above-mentioned spinous process clamp and a connecting rod 16. The spinous process clamp device includes a first clamping portion 1, a second clamping portion 2, and an adjusting bolt 3. The first clamping portion 1 includes a first clamping jaw 4 and a first connecting body 5. The second clamping portion 2 is hinged to the first connecting body 5. The adjusting bolt 3 is arranged on the first clamping jaw 4 and the second clamping portion 2, and the adjusting bolt 3 is used to adjust the angle between the first clamping jaw 4 and the second clamping portion 2. The direction of the first connecting body 5 towards the first clamping jaw 4 is the first direction, and the angle between the axis of the adjusting bolt 3 and the first direction is greater than a preset angle. The connecting rod 16 extends along the first direction. The connecting rod 16 is arranged at one end of the first connecting body 5 far from the first clamping jaw 4. The connecting rod 16 is used to realize the connection with the navigation system, so that the navigation system can move the first connecting body 5 through the connecting rod 16, and further drive the first clamping jaw 4 and the second clamping jaw 6 to move. Specifically, the connecting rod 16 is in the shape of a cylinder and extends along the first direction, that is, extends along the Z direction as shown in Figure 6 shown. The connecting rod 16 is arranged at one end of the first connecting body 5 far from the first clamping jaw 4, which is convenient for the connection between the first connecting body 5 and the connecting rod 16. The specific working principle is as follows: The doctor obtains the spinal model of the patient through a CT device, and then clamps the spinous process through the spinous process clamp device to obtain the position of the spinous process. The position of the spinous process corresponds to the spinal model obtained by the CT device, and the relative position relationship between the spinous process and the spinal model can be obtained. In subsequent surgeries, the surgery can be performed based on the relative position relationship between the spinous process and the spinal model. Therefore, by clamping the spinous process with this spinous process clamp, it is convenient for the navigation system to obtain the position relationship of the spinous process relative to the spinal model. During the process of clamping the spinous process, the angle between the axis of the adjusting bolt 3 and the first direction is greater than the preset angle, which can provide sufficient operating space for the doctor's operation and improve the adjustment efficiency.

[0046] In one of the embodiments, a positioning mechanism 17 is arranged at one end of the connecting rod 16 far from the first connecting body 5, and a positioning mark is arranged on the positioning mechanism 17.

[0047] A positioning mechanism 17 is arranged at one end of the connecting rod 16 far from the first connecting body 5. Through this positioning mechanism 17, the spinous process clamped by the first clamping jaw 4 and the second clamping jaw 6 can be positioned to obtain the relative position of the spinous process. Specifically, a positioning mark is arranged on the positioning mechanism 17, and the positioning mark is a tracing marker, which can be a visible light marker (identification code) or a positioning light source (reflective ball), etc.

[0048] Note that the above is only the preferred embodiment of the present utility model and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. A spinous process clamp, characterized in that: The invention comprises a first clamping part (1), a second clamping part (2) and an adjusting bolt (3); the first clamping part (1) comprises a first clamping jaw (4) and a first connecting body (5); the second clamping part (2) is hinged on the first connecting body (5); the adjusting bolt (3) is arranged on the first clamping jaw (4) and the second clamping part (2); the adjusting bolt (3) is used to adjust the angle between the first clamping jaw (4) and the second clamping part (2); the direction of the first connecting body (5) toward the first clamping jaw (4) is a first direction; and the angle between the axis of the adjusting bolt (3) and the first direction is greater than a preset angle.

2. The spinous process clamp according to claim 1, characterized in that: Along the first direction, the distance between the axis of the adjusting bolt (3) and the first connecting body (5) is greater than a first preset distance.

3. The spinous process clamp according to claim 1, characterized in that: The second clamping portion (2) comprises a second clamping jaw (6) and a second connecting body (7), wherein the second connecting body (7) is hinged on the first connecting body (5), and the adjusting bolt (3) is arranged on the first clamping jaw (4) and the second clamping jaw (6), and the adjusting bolt (3) is used to adjust the angle between the first clamping jaw (4) and the second clamping jaw (6).

4. The spinous process clamp according to claim 3, characterized in that: A clamping space (8) is formed between the first clamping jaw (4) and the second clamping jaw (6), and clamping teeth (9) are provided on the inner side surfaces of the first clamping jaw (4) and the second clamping jaw (6) facing the clamping space (8).

5. The spinous process clamp according to claim 4, characterized in that: The clamping teeth (9) on the first clamping jaw (4) and the clamping teeth (9) on the second clamping jaw (6) are arranged in a row to form a plurality of clamping tooth rows (10); the clamping tooth rows (10) on the first clamping jaw (4) and the clamping tooth rows (10) on the second clamping jaw (6) are arranged in a staggered manner.

6. The spinous process clamp according to claim 5, characterized in that: The adjusting bolt (3) comprises a handle portion (11), a threaded portion (12) and a connecting portion (13) which are arranged in sequence; the second clamping jaw (6) is provided with a threaded hole (14), the threaded portion (12) of the adjusting bolt (3) is connected to the threaded hole (14); the first clamping jaw (4) is provided with a sliding groove (15), the connecting portion (13) is slidably arranged in the sliding groove (15), and the sliding direction of the connecting portion (13) in the sliding groove (15) is not parallel to the axis of the adjusting bolt (3).

7. The spinous process clamp according to claim 6, characterized in that: The connecting portion (13) is a sliding ball, the sliding groove (15) is columnar, and the sliding ball has a sliding freedom along the sliding direction and a rotational freedom in the sliding groove (15) in the sliding groove (15).

8. The spinous process clamp according to claim 1, characterized in that: The distance between an end of the first clamping jaw (4) away from the first connecting body (5) and the axis of the adjusting bolt (3) is greater than a second preset distance.

9. A navigation system, characterized in that: It comprises a connecting rod (16) and a spinous process clamp as claimed in any one of claims 1 to 8, wherein the connecting rod (16) extends along a first direction and is arranged on an end of the first connecting body (5) away from the first clamping jaw (4).

10. The navigation system according to claim 9, characterized in that: A positioning mechanism (17) is provided on one end of the connecting rod (16) away from the first connecting body (5), and a positioning mark is provided on the positioning mechanism (17).

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