F-shaped hysteroscope scissors

Abstract

The utility model discloses F-shaped hysteroscope scissors, and belongs to the technical field of hysteroscope scissors. The pair of hysteroscope scissors solves the problem that cut tissue slides forwards in the cutting process of two crossed scissor blades in existing hysteroscope scissors. The cutter specifically comprises a fixed rod, a movable rod, a fixed blade and a movable blade, a guide hole is formed in the fixed rod in the length direction of a rod body, and the movable rod penetrates through the guide hole. The end of the movable rod is connected with a movable blade, the end of the fixed rod is connected with a fixed blade, and the fixed blade and the movable blade are arranged in parallel. According to the utility model, the movable rod moves along the fixed rod in the guide hole and simultaneously drives the movable blade to move synchronously; the movable blade abuts against the fixed blade in the moving process, and the cut tissue foreign matter between the movable blade and the fixed blade is cut. The movable blade and the fixed blade are arranged in parallel, and the cut tissue cannot slide forwards during cutting, so that one-time cutting can be realized, the cutting speed is high, and the treatment efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hysteroscopic scissors, in particular to an F-shaped hysteroscopic scissors. Background Art

[0002] Hysteroscopic surgery refers to minimally invasive surgery performed with a hysteroscope. The hysteroscope is an advanced device for diagnosing and treating intrauterine diseases. It can clearly observe various changes in the uterine cavity and make a definite diagnosis. Using hysteroscopic technology, intrauterine lesions can be directly examined, and diseased tissues can be located and collected for examination. Hysteroscopic operating instruments can complete various surgeries under the guidance of the hysteroscope. Clinically, the more commonly used one is the examination hysteroscope with a diameter of 6 mm, which can be inserted with a mechanical micro-scissors or grasping forceps for intrauterine operations such as polyp removal and septum resection.

[0003] Existing hysteroscopic scissors all include two intersecting scissor blades, and the two intersecting scissor blades achieve the cutting function during the rotation and opening / closing process; for example, a new type of hysteroscopic flexible scissors disclosed in the Chinese utility model patent with the authorization announcement number CN215306463U, a hysteroscopic scissors disclosed in the Chinese utility model patent with the authorization announcement number CN208677513U, and a scissors for hysteroscope disclosed in the Chinese utility model patent with the authorization announcement number CN215384436U; the hysteroscopic scissors disclosed in these patents all achieve cutting through two intersecting and rotating scissor blades. When cutting tissue foreign bodies such as intrauterine adhesions, endometrial polyps, and submucous myomas of the uterus, the tissue to be cut will slide forward to the front end of the scissor blades during the closing process of the two scissor blades, and after sliding, it will fall out of the twisting range of the two scissor blades, so it cannot achieve complete cutting in one go and often requires multiple repeated cuts, thereby reducing the surgical efficiency. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides an F-shaped hysteroscopic scissors, which solves the problem that the tissue to be cut slides forward during the cutting process of the two intersecting scissor blades in the existing hysteroscopic scissors.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] An F-shaped hysteroscopic scissors includes a fixed rod, a movable rod, a fixed blade, and a movable blade; a guide hole is provided in the fixed rod along the length direction of the rod body, and the movable rod is inserted into the guide hole; a movable blade is connected to the end of the movable rod, a fixed blade is connected to the end of the fixed rod, and the fixed blade and the movable blade are arranged in parallel.

[0007] In this solution, the movable rod moves along the fixed rod within the guiding hole, simultaneously driving the movable blade to move synchronously; during the movement of the movable blade, it abuts against the fixed blade to cut the foreign tissue to be cut between the two; the movable blade and the fixed blade are arranged in parallel, so that the tissue to be cut will not slide forward during cutting, thus enabling one-time cutting, with a fast cutting speed and high treatment efficiency.

[0008] Furthermore, a strip-shaped hole is formed on the side surface of the fixed rod, and the strip-shaped hole communicates with the inner cavity of the guiding hole; a movable handle is perpendicularly connected to the end of the movable rod away from the movable blade, and the movable handle passes through the strip-shaped hole; a fixed handle is connected to the end of the fixed rod close to the movable handle.

[0009] In this solution, during use, medical staff can hold the movable handle and the fixed handle for operation, pull the movable handle to move it backward along the strip-shaped hole, thereby driving the movable blade closer to the fixed blade; the operation is convenient.

[0010] Furthermore, one end of the guiding hole close to the movable handle is closed; a compression spring is provided between the closed end face of the guiding hole and the movable handle.

[0011] In this solution, during operation, the hand tightly holds and pulls the movable handle, the movable handle compresses the compression spring, and after the cutting is completed, the hand relaxes, and under the elastic force of the compression spring, the movable handle automatically resets; after each cutting, there is no need for medical staff to manually reset the movable blade.

[0012] Furthermore, finger pull rings are provided at the ends of both the movable handle and the fixed handle.

[0013] In this solution, with the finger pull rings provided, medical staff can insert their fingers into the two finger pull rings for operation.

[0014] Furthermore, the end of the fixed rod connected to the fixed blade tapers into a flat-mouth structure, and the fixed blade is connected to the end of the flat-mouth structure.

[0015] In this solution, the part where the movable rod is connected to the fixed blade has a smooth transition through the tapered flat-mouth structure, which can reduce the resistance of the fixed rod moving in the patient's body and relieve the discomfort of the patient.

[0016] Furthermore, the knife angle of the movable blade is a circular chamfer structure.

[0017] In this solution, a circular chamfer is designed at the knife angle to prevent the movable blade from scratching the patient's tissue during movement.

[0018] The beneficial effects of the present utility model are:

[0019] In the F-shaped hysteroscopic scissors provided by the present utility model, the cutting of tissues such as intrauterine adhesions, endometrial polyps, and submucous myomas of the uterus is achieved through the opening and closing of a fixed blade and a movable blade that are parallel to each other. Compared with the existing two cross-shaped scissor blades, the tissue to be cut does not slide forward during the cutting process, enabling rapid cutting and improving the surgical efficiency. An operating handle and a fixed handle are designed at the handheld part for easy operation; meanwhile, a compression spring is designed so that the movable blade can reset itself after cutting, and the operation is simple.

[0020] The F-shaped hysteroscopic scissors provided by the present utility model are applicable to the cold knife resection of intrauterine neoplasms under hysteroscopy; compared with traditional scissors, the shearing force acts vertically on the target during operation, making it not easy to slip off; it can also reduce the damage of the scissor tip in the blind area of vision and improve the surgical efficiency. Description of the Drawings

[0021] Figure 1 is a schematic cross-sectional structure diagram of an F-shaped hysteroscopic scissors of the present utility model;

[0022] Figure 2 is Figure 1 a schematic structure diagram of the A-A cross-section in

[0023] Figure 3 is a side view of the fixed rod in the present utility model.

[0024] Reference Signs:

[0025] 1. Fixed rod; 2. Movable rod; 3. Fixed blade; 4. Movable blade; 5. Operating handle; 6. Fixed handle; 7. Compression spring; 8. Finger pull ring; Detailed Embodiments

[0026] The following further describes the present utility model in conjunction with the drawings and specific embodiments. The following describes the specific embodiments of the present utility model to facilitate those skilled in the art of this technology to understand the present utility model, but it should be clear that the present utility model is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present utility model are within the scope of protection.

[0027] As Figure 1 shown, this embodiment provides an F-shaped hysteroscopic scissors for the cutting surgery of tissue foreign bodies such as intrauterine adhesions, endometrial polyps, and submucous myomas of the uterus; the F-shaped hysteroscopic scissors cut tissue foreign bodies through two parallel and opening / closing blades, which can prevent the tissue foreign bodies to be cut from sliding forward and thus affecting the surgical efficiency; it specifically includes:

[0028] A fixed rod 1, a movable rod 2, a fixed blade 3, a movable blade 4, a movable handle 5 and a fixed handle 6;

[0029] Wherein, a guiding hole is formed along the length direction of the rod body inside the fixed rod 1, and the movable rod 2 is inserted into the guiding hole, as Figure 2 shown; a movable blade 4 is connected to the end of the movable rod 2, a fixed blade 3 is connected to the end of the fixed rod 1, and the movable rod 2 moves along the fixed rod 1 in the guiding hole, while driving the movable blade 4 to move synchronously; the fixed blade 3 and the movable blade 4 are arranged in parallel. A strip-shaped hole is formed on the side surface of the fixed rod 1, and the strip-shaped hole communicates with the inner cavity of the guiding hole; a movable handle 5 is vertically connected to the end of the movable rod 2 away from the movable blade 4, and the movable handle 5 penetrates through the strip-shaped hole; a fixed handle 6 is connected to the end of the fixed rod 1 close to the movable handle 5.

[0030] One end of the guiding hole close to the movable handle 5 is closed; a compression spring 7 is arranged between the closed end face of the guiding hole and the movable handle 5; during operation, the hand holds and pulls the movable handle 5, the movable handle 5 compresses the compression spring 7, and after the cutting is completed, the hand relaxes, and under the elastic force of the compression spring 7, the movable handle 5 automatically resets; after each cutting, there is no need for medical staff to manually reset the movable blade 4.

[0031] Finger pulling rings 8 are arranged at the ends of the movable handle 5 and the fixed handle 6; medical staff can insert their fingers into the two finger pulling rings 8 for operation.

[0032] As Figure 3 shown, the end of the fixed rod 1 connected to the fixed blade 3 tapers into a flat mouth structure, and the fixed blade 3 is connected to the end of the flat mouth structure; the part of the movable rod 2 connected to the fixed blade 3 is smoothly transitioned through a tapered flat mouth structure, which can reduce the resistance of the fixed rod 1 moving in the patient's body and relieve the discomfort of the patient.

[0033] The knife angle of the movable blade 4 is a circular chamfer structure; a circular chamfer is designed at the knife angle to prevent the movable blade 4 from scratching the patient's tissue during movement.

[0034] The working principle of this embodiment is as follows:

[0035] When the F-type hysteroscope scissors provided in this embodiment are used, medical staff hold the movable handle 5 and the fixed handle 6, insert the end provided with the movable blade 4 into the uterine cavity along the operation channel of the cavity mirror, and make foreign bodies such as endometrial polyps to be cut located between the movable blade 4 and the fixed blade 3; pull the movable handle 5, drive the movable blade 4 to move towards the fixed blade 3 until they contact, and successfully cut the tissue to be cut; release the movable handle 5, and under the action of the compression spring 7, the movable blade 4 resets, realizing a complete cutting process.

[0036] Those of ordinary skill in the art will realize that the embodiments herein are provided to assist the reader in understanding the principles of the present utility model, and it should be understood that the scope of protection of the present utility model is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations that do not depart from the essence of the present utility model based on these technical revelations disclosed in the present utility model, and these deformations and combinations are still within the scope of protection of the utility model.

Claims

1. An F-type hysteroscopic scissors, characterized in that: The invention comprises a fixed rod (1), a movable rod (2), a fixed blade (3) and a movable blade (4); a guide hole is provided in the fixed rod (1) along the length direction of the rod body, and the movable rod (2) is inserted into the guide hole; the end of the movable rod (2) is connected to the movable blade (4), and the end of the fixed rod (1) is connected to the fixed blade (3); the fixed blade (3) and the movable blade (4) are arranged in parallel.

2. The F-type hysteroscopic scissors according to claim 1, characterized in that: A strip hole is provided on the side of the fixed rod (1), and the strip hole is communicated with the inner cavity of the guide hole; the end of the movable rod (2) away from the movable blade (4) is vertically connected to a movable handle (5), and the movable handle (5) is arranged to pass through the strip hole; the end of the fixed rod (1) close to the movable handle (5) is connected to a fixed handle (6).

3. The F-type hysteroscopic scissors according to claim 2, characterized in that: One end of the guide hole close to the movable handle (5) is closed; a compression spring (7) is provided between the closed end surface of the guide hole and the movable handle (5).

4. The F-type hysteroscopic scissors according to claim 2, characterized in that: Finger pull rings (8) are provided at the ends of the movable handle (5) and the fixed handle (6).

5. The F-type hysteroscopic scissors according to claim 2, characterized in that: One end of the fixed rod (1) connected to the fixed blade (3) is gradually reduced to a flat-mouth structure, and the fixed blade (3) is connected to the end of the flat-mouth structure.

6. The F-type hysteroscopic scissors according to claim 2, characterized in that: The corner of the movable blade (4) is a circular chamfered structure.

Images