Nucleus forceps for endoscopic spinal surgery

Abstract

The utility model discloses a kind of nucleus pulposus forceps for endoscopic spinal surgery, it is related to medical instrument technical field, the problem that current nucleus pulposus forceps is difficult to monitor and control for single clamping amount can be solved.The embodiment of the utility model discloses a kind of nucleus pulposus forceps for endoscopic spinal surgery, including rotationally connected fixed handle and movable handle, further including fixed arc-shaped rod on fixed handle and movable arc-shaped cylinder on movable handle, fixed arc-shaped rod is inserted in movable arc-shaped cylinder and is slidably connected with it, the center of gravity of the arc corresponding to fixed arc-shaped rod and movable arc-shaped cylinder is coincident on the pivot of fixed handle and movable handle, further including clamping amount monitoring component on fixed arc-shaped rod and movable arc-shaped cylinder and for monitoring nucleus pulposus clamping amount.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a nucleus pulposus clamp for spinal endoscopic surgery. Background Technology

[0002] Currently, when performing minimally invasive endoscopic surgery on the spine, after the spinal endoscope is inserted into the patient's body, tools such as drills and bone forceps are needed to create a window on the spinal vertebral plate through the surgical channel of the spinal endoscope, so as to perform subsequent operations such as ligamentum flavum switching and nucleus pulposus removal.

[0003] The core objective of the entire spinal endoscopic minimally invasive surgery is to remove a portion of the nucleus pulposus, thereby preventing the nucleus pulposus from compressing and pressing on the nerve root, and thus alleviating the patient's symptoms. Currently, the nucleus pulposus is mainly removed using nucleus pulposus clamps. However, there is a problem with the current method: although doctors can control the total amount of nucleus pulposus removed based on experience and patient feedback, it is difficult to control the amount removed in a single operation with the existing nucleus pulposus clamps. Removing too much or too little nucleus pulposus will affect the surgical outcome, and the difficulty in controlling the amount removed in a single operation can easily lead to an inability to control the total amount of nucleus pulposus.

[0004] Based on the above background, the inventors designed a nucleus pulposus clamp for spinal endoscopic surgery to solve the above problems, and hereby submit this application. Summary of the Invention

[0005] The purpose of this application is to provide a nucleus pulposus clamp for spinal endoscopic surgery, which solves the problem that existing nucleus pulposus clamps are difficult to monitor and control the amount of material removed in a single procedure.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0007] This application provides a nucleus pulposus clamp for spinal endoscopic surgery, including a fixed handle and a movable handle rotatably connected, a fixed arc-shaped rod disposed on the fixed handle, and a movable arc-shaped cylinder disposed on the movable handle. The fixed arc-shaped rod is inserted into and slidably connected to the movable arc-shaped cylinder. The centers of the arcs containing the fixed arc-shaped rod and the movable arc-shaped cylinder coincide on the rotation axis of the fixed handle and the movable handle, respectively.

[0008] It also includes a clamping volume monitoring component mounted on a fixed arc-shaped rod and a movable arc-shaped cylinder for monitoring the amount of nucleus pulposus clamped.

[0009] Optionally, the clamping amount monitoring component includes a conductive ring disposed inside the movable arc-shaped cylinder, and several sets of trigger units with different resistance values ​​distributed on the fixed arc-shaped rod;

[0010] The conductive ring is electrically connected to different trigger units based on the different included angles between the fixed grip and the movable grip.

[0011] Optionally, the triggering unit includes a resistor and a first conductive contact and a second conductive contact, wherein the first conductive contact is electrically connected to the second conductive contact through the resistor.

[0012] Optionally, the first conductive contact and the second conductive contact are respectively disposed on opposite sides of the fixed arc-shaped rod.

[0013] Optionally, the first conductive contact and / or the second conductive contact are floating contacts.

[0014] Optionally, the triggering unit is provided in 2 to 4 groups.

[0015] Optionally, it also includes a fixed clamp body and a movable clamp body with sliding connection;

[0016] The fixed grip and the movable grip are fixedly connected to the fixed clamp body and the movable clamp body, respectively.

[0017] It also includes a fixed pliers head located at the end of the fixed grip and a movable pliers head located at the end of the movable grip. The fixed pliers head has an elastic clip on the side facing the movable pliers head, and a pressure sensor is provided between the elastic clip and the fixed pliers head.

[0018] Optionally, the elastic clamping piece is provided with a plurality of first clamping teeth for anti-slip on the side facing the movable clamping head.

[0019] Optionally, the movable pliers head is provided with a number of second gripping teeth for anti-slip purposes on the side facing the fixed pliers head.

[0020] The beneficial effects of this utility model are:

[0021] I. This application, by setting a fixed arc-shaped rod and a movable arc-shaped cylinder, as well as a clamping volume monitoring component, allows doctors to intuitively obtain approximate clamping data based on the depth of the fixed arc-shaped rod inserted into the movable arc-shaped cylinder after clamping the nucleus pulposus within the intervertebral disc. This avoids the problem of doctors relying solely on touch to determine the clamping volume of the nucleus pulposus, which leads to difficulty in controlling the amount of nucleus pulposus removed.

[0022] Second, this application sets up multiple sets of trigger units with different resistances, so that different current values ​​can be obtained after the fixed arc rod is inserted into the movable arc cylinder at different depths. By comparing the preset current value with the obtained current value, the specific depth of the fixed arc rod inserted into the movable arc cylinder can be obtained, thereby obtaining the clamping angle of the clamping head of the nucleus pulposus forceps of this application, and then obtaining the clamping amount of the nucleus pulposus, which is beneficial for doctors to judge the clamping amount.

[0023] Third, this application incorporates an elastic clip and a pressure sensor on the fixed clamp head, allowing the doctor to determine the amount of nucleus pulposus clamped only after clamping it and reaching the set pressure value, thus avoiding judgment errors caused by differences in gripping force. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of this application.

[0025] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0026] Figure 3 for Figure 1 A magnified view of a portion of point B in the middle.

[0027] Figure 4 for Figure 3 A magnified view of a portion of point B1.

[0028] Explanation of reference numerals in the attached figures:

[0029] 11-Fixed clamp body, 12-Modible clamp body, 21-Fixed clamp head, 22-Modible clamp head, 221-First clamping tooth, 23-Elastic clamping piece, 231-Second clamping tooth, 31-Fixed grip, 32-Modible grip, 4-Pressure sensor, 51-Modible arc-shaped cylinder, 52-Fixed arc-shaped rod, 53-Trigger unit, 531-First conductive contact, 532-Second conductive contact, 533-Resistor, 54-Conductive ring. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0031] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 4 As shown, this embodiment provides a nucleus pulposus forceps for spinal endoscopic surgery, including a fixed handle 31 and a movable handle 32 rotatably connected, and further including a fixed arc-shaped rod 52 disposed on the fixed handle 31 and a movable arc-shaped cylinder 51 disposed on the movable handle 32. The fixed arc-shaped rod 52 is inserted into and slidably connected to the movable arc-shaped cylinder 51. The centers of the arcs corresponding to the fixed arc-shaped rod 52 and the movable arc-shaped cylinder 51 coincide on the rotation axis of the fixed handle 31 and the movable handle 32.

[0035] It also includes a clamping amount monitoring component mounted on the fixed arc-shaped rod 52 and the movable arc-shaped cylinder 51 for monitoring the clamping amount of the nucleus pulposus.

[0036] This embodiment, by setting up a fixed arc-shaped rod 52 and a movable arc-shaped cylinder 51, as well as a clamping amount monitoring component, allows the doctor to intuitively obtain approximate clamping data based on the depth of the fixed arc-shaped rod 52 inserted into the movable arc-shaped cylinder 51 after clamping the nucleus pulposus in the intervertebral disc. This avoids the problem of the doctor relying solely on feel to determine the amount of nucleus pulposus clamped, which leads to difficulty in controlling the amount of nucleus pulposus clamped out.

[0037] In this embodiment, the clamping amount monitoring component includes a conductive ring 54 disposed in the movable arc-shaped cylinder 51, and several sets of trigger units 53 with different resistance values ​​distributed on the fixed arc-shaped rod 52;

[0038] The conductive ring 54 is electrically connected to different trigger units 53 based on the different included angles between the fixed grip 31 and the movable grip 32.

[0039] In this embodiment, by setting multiple sets of resistors 533 with different trigger units 53, different current values ​​can be obtained after the fixed arc-shaped rod 52 is inserted into the movable arc-shaped cylinder 51 at different depths. By comparing the preset current value with the obtained current value, the specific depth of the fixed arc-shaped rod 52 inserted into the movable arc-shaped cylinder 51 can be obtained, thereby obtaining the clamping angle of the nucleus pulposus forceps of this application, and then obtaining the clamping amount of the nucleus pulposus, which is beneficial for doctors to judge the clamping amount.

[0040] In this embodiment, the triggering unit 53 includes a resistor 533, a first conductive contact 531, and a second conductive contact 532. The first conductive contact 531 is electrically connected to the second conductive contact 532 through the resistor 533. The resistor 533 is located inside the fixed arc-shaped rod 52.

[0041] In this embodiment, the first conductive contact 531 and the second conductive contact 532 are respectively disposed on opposite sides of the fixed arc-shaped rod 52 to improve the stability of the contact.

[0042] In this embodiment, the first conductive contact 531 and / or the second conductive contact 532 are floating contacts, which reduces wear and increases service life.

[0043] In this embodiment, the triggering unit 53 is provided in 4 groups, and technicians can set 3 or 2 groups of triggering units 53 according to their needs.

[0044] In some embodiments, corresponding warning lights can be set according to the number of trigger units 53, so that after the doctor has clamped the nucleus pulposus, he can directly judge the amount of nucleus pulposus clamped by the forceps through the warning lights.

[0045] In this embodiment, a fixed clamp 11 and a movable clamp 12 that are slidably connected are also included;

[0046] The fixed grip 31 and the movable grip 32 are fixedly connected to the fixed clamp body 11 and the movable clamp body 12, respectively.

[0047] It also includes a fixed clamp head 21 located at the end of the fixed grip 31 and a movable clamp head 22 located at the end of the movable grip 32. An elastic clip 23 is provided on the side of the fixed clamp head 21 facing the movable clamp head 22, and a pressure sensor 4 is provided between the elastic clip 23 and the fixed clamp head 21.

[0048] This embodiment uses an elastic clip 23 and a pressure sensor 4 on the fixed clamp head 21 to allow the doctor to judge the amount of nucleus pulposus clamped after clamping it and reaching the set pressure value, thus avoiding judgment errors caused by differences in gripping force.

[0049] In this embodiment, the elastic clamping piece 23 is provided with a plurality of first clamping teeth 221 for anti-slip on the side facing the movable clamping head 22.

[0050] In this embodiment, the movable pliers 22 is provided with a plurality of second gripping teeth 231 for anti-slip purposes on the side facing the fixed pliers 21.

[0051] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A nucleus pulposus clamp for spinal endoscopic surgery, comprising a fixed handle (31) and a movable handle (32) rotatably connected, characterized in that, It also includes a fixed arc-shaped rod (52) on the fixed grip (31) and a movable arc-shaped cylinder (51) on the movable grip (32). The fixed arc-shaped rod (52) is inserted into the movable arc-shaped cylinder (51) and slidably connected to it. The centers of the arcs on which the fixed arc-shaped rod (52) and the movable arc-shaped cylinder (51) are located coincidentally on the pivots of the fixed grip (31) and the movable grip (32). It also includes a clamping amount monitoring component mounted on a fixed arc-shaped rod (52) and a movable arc-shaped cylinder (51) for monitoring the clamping amount of the nucleus pulposus.

2. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 1, characterized in that, The clamping amount monitoring component includes a conductive ring (54) disposed in the movable arc-shaped cylinder (51), and several sets of trigger units (53) with different resistance values ​​distributed on the fixed arc-shaped rod (52); The conductive ring (54) is electrically connected to different trigger units (53) based on the different included angles between the fixed grip (31) and the movable grip (32).

3. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 2, characterized in that, The triggering unit (53) includes a resistor (533), a first conductive contact (531), and a second conductive contact (532). The first conductive contact (531) is electrically connected to the second conductive contact (532) through the resistor (533).

4. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 3, characterized in that, The first conductive contact (531) and the second conductive contact (532) are respectively disposed on opposite sides of the fixed arc-shaped rod (52).

5. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 3, characterized in that, The first conductive contact (531) and / or the second conductive contact (532) are floating contacts.

6. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 2, characterized in that, The triggering unit (53) is provided with 2 to 4 groups.

7. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 1, characterized in that, It also includes a fixed clamp (11) and a movable clamp (12) with sliding connection; The fixed grip (31) and the movable grip (32) are fixedly connected to the fixed clamp body (11) and the movable clamp body (12) respectively; It also includes a fixed clamp head (21) at the end of the fixed grip (31) and a movable clamp head (22) at the end of the movable grip (32). The fixed clamp head (21) is provided with an elastic clip (23) on the side facing the movable clamp head (22), and a pressure sensor (4) is provided between the elastic clip (23) and the fixed clamp head (21).

8. The nucleus pulposus clamp for spinal endoscopic surgery according to claim 7, characterized in that, The elastic clamp (23) is provided with a number of first clamping teeth (221) for anti-slip on the side facing the movable clamp head (22).

9. A nucleus pulposus clamp for spinal endoscopic surgery according to claim 7, characterized in that, The movable pliers (22) has several second gripping teeth (231) on the side facing the fixed pliers (21) for anti-slip purposes.

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