Trocar with groove for cutting off transverse carpal ligament under monitoring of arthroscope

Abstract

The utility model discloses a trocar with a groove for cutting off a transverse wrist ligament under monitoring of an arthroscope. The trocar comprises an arthroscope sleeve, a hook knife long rod inserted into the arthroscope sleeve and a hook knife located at the end of the hook knife long rod. A reserved groove hole is formed in the side wall of the lower end of the arthroscope sleeve in the axial direction of the arthroscope sleeve. The tip of the hook knife can extend out of the reserved groove hole so as to cut off surface ligaments. In the application, in an operation, the knife handle is held by hand to drive the long rod of the hook knife to rotate, so that the tip of the hook knife is driven to extend out of the reserved slotted hole to cut off a surface ligament; the method has the advantages that the technology is simple and easy to implement, the operation difficulty is greatly reduced, and the operation fineness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transverse carpal ligament, in particular to a punch card with a groove used for cutting the transverse carpal ligament under arthroscopic monitoring. Background Art

[0002] Conventionally, a common arthroscopic sleeve is used to longitudinally open a 2 mm wide and 30 mm long groove in the middle and distal part of the sleeve. During the operation, instruments are used to cut the transverse carpal ligament from the inside to the outside using the groove to achieve the purpose of treating carpal tunnel syndrome.

[0003] The existing surgery is mainly open surgery, which has the disadvantages of large wound surface, complicated surgery and long operation time. Based on this, it is necessary to design a sleeve with grooves to achieve the purpose of treating carpal tunnel syndrome by cutting the transverse carpal ligament from the inside to the outside. Utility Model Content

[0004] The utility model aims to provide a slotted poking card for cutting the transverse carpal ligament under arthroscopic monitoring, so as to solve the problem of how to achieve minimally invasive and safe treatment of carpal tunnel syndrome.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a slotted poking card for cutting the transverse carpal ligament under arthroscopic monitoring, comprising an arthroscopic sleeve, a hook knife long rod inserted in the arthroscopic sleeve, and a hook knife located at the end of the hook knife long rod;

[0007] A reserved slot is provided on the side wall of the lower end of the arthroscopic sleeve along its axial direction; and the tip of the hook knife can extend out of the reserved slot to cut off the surface ligament.

[0008] Furthermore, the reserved slot is a slot with a width of 2 mm and a length of 30 mm opened longitudinally in the middle and distal sections of the arthroscopic sleeve.

[0009] Furthermore, a knife handle tube is arranged at the end of the arthroscopic sleeve, and a knife handle matched with the inner diameter of the knife handle tube is arranged at the other end of the hook knife long rod.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are as follows: in the present application, during surgery, the long rod of the hook knife is driven to rotate by holding the knife handle, thereby driving the tip of the hook knife to extend out of the reserved slot to cut off the surface ligament; it has the following advantages: the technology is simple and easy, which greatly reduces the difficulty of surgery and improves the precision of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model will be further described below in conjunction with the accompanying drawings.

[0012] Figure 1 This is a schematic structural diagram of a slotted stamping card for cutting the transverse carpal ligament under arthroscopic monitoring according to the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model after the slotted stamping card is assembled for cutting the transverse carpal ligament under arthroscopic monitoring;

[0014] Figure 3 This is a schematic diagram of the hook knife structure in the utility model;

[0015] Figure 4 It is a schematic diagram of the hook knife in the utility model cooperating with the reserved slot hole to cut the ligament.

[0016] Explanation of the reference numerals: 1. Arthroscopic sleeve; 11. Knife handle tube; 12. Reserved slot; 2. Hook knife long rod; 21. Knife handle; 22. Hook knife. DETAILED DESCRIPTION

[0017] This embodiment discloses a slotted stamping card for cutting the transverse carpal ligament under arthroscopic monitoring, comprising an arthroscopic sleeve 1, a hook knife long rod 2 inserted into the arthroscopic sleeve 1, and a hook knife 22 located at the end of the hook knife long rod 2;

[0018] A reserved slot 12 is provided on the side wall of the lower end of the arthroscopic sleeve 1 along its axial direction; the tip of the hook knife 22 can extend out of the reserved slot 12 to cut the surface ligament;

[0019] In this embodiment, the arthroscopic sleeve 1 is an existing general arthroscopic sleeve, and a 2mm wide and 30mm long groove is longitudinally opened in the middle and distal sections of the arthroscopic sleeve; Figure 4 As shown, the instrument is used to cut the transverse carpal ligament from the inside and outside by utilizing the groove to achieve the purpose of treating carpal tunnel syndrome.

[0020] In this embodiment, during specific implementation, the reserved slot 12 is a slot with a width of 2 mm and a length of 30 mm opened longitudinally in the middle and distal sections of the arthroscopic sleeve 1 .

[0021] In this embodiment, Figure 1 As shown, a knife handle tube 11 is installed at the end of the arthroscopic sleeve 1, and a knife handle 21 adapted to the inner diameter of the knife handle tube 11 is installed at the other end of the hook knife long rod 2;

[0022] The handle 21 is held by hand to drive the hook knife long rod 2 to rotate, so that the tip of the hook knife 22 can extend out of the reserved slot 12;

[0023] In addition, based on the working principle of the endoscope, the endoscope of the arthroscopic sleeve is not straight, but a slope, and the commonly used slope angles are 30 degrees and 70 degrees; it can assist the physician in controlling the hook knife 22 to extend out of the reserved slot 12 based on the transmitted video.

[0024] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A slotted stamping card for cutting the transverse carpal ligament under arthroscopic monitoring, characterized in that: It comprises an arthroscopic sleeve (1), a hook knife long rod (2) inserted into the arthroscopic sleeve (1), and a hook knife (22) located at the end of the hook knife long rod (2); A reserved slot (12) is provided on the side wall of the lower end of the arthroscopic sleeve (1) along its axial direction; the tip of the hook knife (22) can extend out of the reserved slot (12) to cut off the surface ligament.

2. The slotted stamping card for cutting the transverse carpal ligament under arthroscopic monitoring according to claim 1, characterized in that: The reserved slot (12) is a slot with a width of 2 mm and a length of 30 mm opened longitudinally in the middle and distal sections of the arthroscopic sleeve (1).

3. The slotted stamping card for cutting the transverse carpal ligament under arthroscopic monitoring according to claim 1, characterized in that: A knife handle tube (11) is arranged at the end of the arthroscopic sleeve (1), and a knife handle (21) adapted to the inner diameter of the knife handle tube (11) is arranged at the other end of the hook knife long rod (2).

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