A special surgical kit for endoscopic microvascular decompression

Abstract

An endoscopic microvascular decompression special operation kit, comprising a hook knife, scissors, a bent hook and forceps; the hook knife comprises a handle, a rod and a hook, the front end of the handle is connected with the rear end of the rod, the side wall of the front end of the rod is connected with the hook, the cross section of the hook is triangular, and the front side bevel, or the rear side bevel, or the front and rear side bevels of the hook are provided with a blade. The scissors comprise a first shear arm and a second shear arm, the rear end of the first shear arm and the rear end of the second shear arm are respectively connected with elastic reset handles, and the length of the scissors is 150-300 mm. The hook of the hook knife is used to break an opening in the arachnoid membrane under the guidance of an endoscope, so as to facilitate the observation of the blood vessels and nerves on the subarachnoid side, and then the scissors are used to cut and separate the arachnoid membrane, so as to avoid direct cutting with the scissors, avoid the damage to the blood vessels and nerves on the subarachnoid side, fully release the cerebrospinal fluid and increase the operation space.

Description

Technical Field

[0001] This utility model relates to the field of human life necessities, and in particular to medical devices, especially a surgical kit for endoscopic microvascular decompression. Background Technology

[0002] Currently, microvascular decompression surgery mainly relies on microscopic surgical procedures, using conventional surgical instruments to separate nerves from adjacent blood vessels and place decompression pads. With the development of endoscopic technology, endoscopic microvascular decompression (EMVD) has been gradually promoted, offering advantages such as minimal surgical trauma and clear visualization. However, during surgery, the specialization and precision of existing instruments are still insufficient for the complex anatomical structures within the posterior cranial fossa, particularly in terms of instrument size, angle adaptation, operational flexibility, and nerve protection, where a complete system has not yet been established. Specifically, during the surgery, the arachnoid membrane first needs to be separated. Current techniques directly use scissors to cut the arachnoid membrane, which easily damages blood vessels and nerves due to the unclear distribution of blood vessels and nerves beneath the arachnoid membrane. Then, the blood vessels and nerves need to be separated to make room for the placement of the decompression pad. Current techniques use conventional instruments for separation, which also easily injures blood vessels or nerves. Finally, the decompression pad is picked up and placed using forceps. Current forceps are relatively short and straight, making it difficult to reach deeper surgical sites, resulting in inconvenient operation. Utility Model Content

[0003] The purpose of this invention is to provide a surgical kit specifically designed for endoscopic microvascular decompression surgery, which addresses the technical problems of existing endoscopic microvascular decompression procedures, such as the easy damage to blood vessels and nerves and the difficulty in reaching deeper surgical sites to place pads.

[0004] This utility model provides a special surgical kit for endoscopic microvascular decompression, including a hook knife, scissors, a curved hook, and forceps;

[0005] The hook knife includes a handle, a shaft, and a hook. The front end of the handle is connected to the rear end of the shaft. The hook is connected to the side wall of the front end of the shaft. The cross-section of the hook is triangular. A cutting edge is provided on the front hypotenuse, the rear hypotenuse, or both the front and rear hypotenuses of the hook.

[0006] The scissors include a first scissor arm and a second scissor arm. The front ends of the first scissor arm and the second scissor arm are provided with blades facing each other. The front sections of the first scissor arm and the front sections of the second scissor arm are hinged to each other behind the blades. The rear ends of the first scissor arm and the rear ends of the second scissor arm are each connected to an elastically reset handle. The length of the scissors is 150-300mm.

[0007] The elbow hook includes a handle, a hook connected to the front end of the handle, and a ball connected to the front end of the hook after bending. The diameter of the ball is larger than the diameter of the hook.

[0008] The tweezers include a handle, with two clamping arms connected to the front end of the handle. The length of the clamping arms is 150-300mm. The rear end of the clamping arms is connected to the handle.

[0009] Furthermore, the front ends of both the first and second shear arms are bent upwards and then extended, and then bent downwards and then extended, with the plane of the bend being perpendicular to the opening and closing plane of the cutting edge.

[0010] Furthermore, the front end of the clamping arm bends upward and extends, then bends downward and extends again.

[0011] Compared with existing technologies, this invention offers significant and positive advantages. First, the hook of a scalpel, guided by an endoscope, creates an opening in the arachnoid membrane, facilitating observation of the blood vessels and nerves beneath it. Then, scissors are used to cut and separate the arachnoid membrane, avoiding direct cutting and damage to the blood vessels and nerves beneath the membrane. This allows for full release of cerebrospinal fluid and increases surgical space. The longer scissors, with their two curved structures, can accommodate the anatomical structure of the posterior cranial fossa, easily reaching deeper areas for manipulation. The curved hook, with its spherical shape, adapts to different traction angles, providing cushioning and protection during separation, preventing excessive mechanical pressure on the nerves and thus avoiding excessive mechanical compression of blood vessels and nerves, optimizing the separation process. The longer forceps, with their two curved structures, also accommodate the anatomical structure of the posterior cranial fossa, easily reaching deeper areas for manipulation. This improves the precision and safety of the surgical procedure, reduces the risk of nerve damage, and improves patient prognosis. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the hook knife in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0013] Figure 2 This is a three-dimensional schematic diagram of the hook knife in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0014] Figure 3 This is a frontal view of the scissors used in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0015] Figure 4 This is a top view of the scissors used in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0016] Figure 5 This is a three-dimensional schematic diagram of the scissors used in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0017] Figure 6This is a schematic diagram of the bent hook in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0018] Figure 7 This is a three-dimensional schematic diagram of the bent hook in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0019] Figure 8 This is a frontal view of the forceps in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0020] Figure 9 This is a top view of the forceps in a surgical kit for endoscopic microvascular decompression surgery according to this utility model.

[0021] Figure 10 This is a three-dimensional schematic diagram of the forceps in a surgical kit for endoscopic microvascular decompression surgery according to this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0023] like Figures 1-10 As shown, this utility model provides a special surgical kit for endoscopic microvascular decompression surgery, including a hook knife 1, scissors 2, a curved hook 3 and forceps 4;

[0024] The hook knife 1 includes a handle 11, a rod 12 and a hook 13. The front end of the handle 11 is connected to the rear end of the rod 12. The hook 13 is connected to the side wall of the front end of the rod 12. The cross-section of the hook 13 is triangular. A cutting edge is provided on the front hypotenuse, the rear hypotenuse, or the front and rear hypotenuses of the hook 13.

[0025] The scissors 2 include a first scissor arm 21 and a second scissor arm 22. The front ends of the first scissor arm 21 and the second scissor arm 22 are provided with blades facing each other. The front section of the first scissor arm 21 and the front section of the second scissor arm 22 are hinged to the rear side of the blades. The rear ends of the first scissor arm 21 and the rear ends of the second scissor arm 22 are each connected to an elastically reset handle 23. The length of the scissors 2 is 150-300mm.

[0026] Specifically, the elastic reset handle 23 adopts the handle of a microscissor in the prior art. One elastic reset handle 23 has a limiting hole at its rear end, and the other elastic reset handle 23 has a limiting end at its rear end that matches the limiting hole. The limiting end is movably engaged in the limiting hole and can move within the limiting hole to open the closed first scissor arm 21 and the second scissor arm 22. See patent document CN208769921 U.

[0027] The elbow hook 3 includes a handle 31, a hook 32 connected to the front end of the handle 31, and a ball 33 connected to the front end of the hook 32 after bending. The diameter of the ball 33 is larger than the diameter of the hook 32.

[0028] The tweezers 4 include a tweezer handle 41, with two clamping arms 42 connected to the front end of the tweezer handle 41. The length of the clamping arms 42 is 150-300mm. The rear end of the clamping arms 42 is connected to the tweezer handle 41.

[0029] Furthermore, such as Figure 4 As shown, the front ends of the first shear arm 21 and the second shear arm 22 are both bent upwards and then extended, and then bent downwards and then extended, with the plane where the bends are located perpendicular to the opening and closing plane of the cutting edge.

[0030] Furthermore, such as Figure 9 As shown, the front end of the clamping arm 42 bends upward and extends, then bends downward and extends again.

[0031] Operating procedures:

[0032] Endoscopic positioning: Before the operation begins, the endoscope is stably positioned in the posterior fossa observation position using an endoscope fixation bracket or by an assistant holding the endoscope to ensure a clear surgical field.

[0033] Tissue separation: First, using the hook part 13 of the hook knife 1, an opening is made in the arachnoid membrane under endoscopic guidance to facilitate observation of the blood vessels and nerves on the subarachnoid side. Then, the arachnoid membrane is cut and separated using scissors 2, thus avoiding direct cutting with scissors, preventing damage to the blood vessels and nerves on the subarachnoid side, fully releasing cerebrospinal fluid, and increasing surgical space. Scissors 2 are relatively long, and their two bending structures can be adapted to the anatomical structure of the posterior cranial fossa, making it easy to reach deeper internal locations for manipulation.

[0034] Precise Identification: The curved hook 3 precisely separates the responsible blood vessel and nerve. The hook 13 of the curved hook 3 is curved, and together with the ball 33, it can adapt to different angle traction needs. It plays a buffering and protective role during the separation process, avoiding excessive mechanical pressure on the nerve directly. This can avoid excessive mechanical compression on the blood vessel and nerve, and optimize the separation process between the nerve and blood vessel.

[0035] Release and fixation of the decompression pad: After separating the space between the responsible blood vessel and nerve using the curved hook 3, the decompression pad is placed in the accurate position using forceps 4 to ensure complete separation of the responsible blood vessel and nerve. The forceps 4 are relatively long, and their two curved structures can be adapted to the anatomical structure of the posterior cranial fossa, making it easy to reach deeper internal locations for manipulation.

Claims

1. A surgical kit specifically designed for endoscopic microvascular decompression, characterized in that, Includes hook knives, scissors, curved hooks, and tweezers; The hook knife includes a handle, a shaft, and a hook. The front end of the handle is connected to the rear end of the shaft. The hook is connected to the side wall of the front end of the shaft. The cross-section of the hook is triangular. A cutting edge is provided on the front hypotenuse, the rear hypotenuse, or both the front and rear hypotenuses of the hook. The scissors include a first scissor arm and a second scissor arm. The front ends of the first scissor arm and the second scissor arm are provided with blades facing each other. The front sections of the first scissor arm and the front sections of the second scissor arm are hinged to each other behind the blades. The rear ends of the first scissor arm and the rear ends of the second scissor arm are each connected to an elastically reset handle. The length of the scissors is 150-300mm. The elbow hook includes a handle, a hook connected to the front end of the handle, and a ball connected to the front end of the hook after bending. The diameter of the ball is larger than the diameter of the hook. The tweezers include a handle, with two clamping arms connected to the front end of the handle. The length of the clamping arms is 150-300mm. The rear end of the clamping arms is connected to the handle.

2. The surgical kit for endoscopic microvascular decompression surgery according to claim 1, characterized in that, The front ends of the first and second shear arms are both bent upwards and then extended, and then bent downwards and then extended, with the plane of the bend being perpendicular to the opening and closing plane of the cutting edge.

3. The surgical kit for endoscopic microvascular decompression surgery according to claim 1, characterized in that, The front end of the clamping arm bends upward and extends, then bends downward and extends again.

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