Endometrial biopsy forceps

Abstract

The endometrium biopsy forceps comprise a forceps body, a clamping and cutting assembly arranged at one end of the forceps body and a driving assembly capable of driving the clamping and cutting assembly to move. By means of the clamping and cutting assembly and the driving assembly, in the sampling process in cooperation with a hysteroscope, when a polyp with the large size is encountered, the shearing driving part controls the shearing head, the shearing head and the fixed clamping and cutting head cut the root of the polyp firstly, and after the root of the polyp is cut off, the clamping and cutting head is used for cutting off the polyp. An operator can control the forceps clip head to be gradually tightened through the forceps clip driving part, the forceps clip head and the fixing clip cutting head clamp the cut polyp, the polyp is brought out of the body of a patient, and compared with a sampling method needing multi-step operation in the prior art, the sampling method has the advantages that the operation is simple, and the operation is convenient. According to the hysteroscope, the operation of cutting, clamping and taking out the polyp can be achieved without taking the whole device out of the hysteroscope, the operation process is more efficient, and harm to a patient can be reduced to the minimum.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an endometrial biopsy forceps. Background Technology

[0002] Endometrial biopsy is a common gynecological diagnostic procedure used to obtain endometrial tissue samples for assessing pathological changes. Currently, most endometrial biopsies utilize the traditional curette method, physically scraping the surface of the endometrium to collect tissue samples. However, in cases requiring more precise sampling, or when lesions such as polyps are suspected, curette alone may not be sufficient to obtain adequate or representative samples. In such situations, physicians typically combine hysteroscopy with biopsy forceps to achieve more accurate sampling. Hysteroscopy provides direct visual guidance, ensuring the biopsy forceps reach the target location accurately, thereby improving sampling efficiency and accuracy.

[0003] While hysteroscopic-assisted biopsy forceps have improved the effectiveness of endometrial biopsies to some extent, existing forceps are primarily designed for basic clamping. In practice, when encountering large or tough abnormal tissues such as polyps, these forceps often struggle to tear them off directly. This necessitates interrupting the sampling process, removing the forceps, and using other specialized cutting instruments (such as electrocautery rings or scissors) for initial treatment when faced with large polyps or other complex lesions. After cutting, the forceps must be reinserted to remove the excised tissue. This multi-step process not only increases the procedure time but also places additional physical and psychological burden on the patient. Furthermore, frequent instrument changes may increase the risk of infection and cause unnecessary damage to the endometrium. Therefore, developing an integrated endometrial biopsy forceps that can effectively clamp and cut is a key area for improvement in enhancing sampling efficiency and reducing patient discomfort. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] Endometrial biopsy forceps, including:

[0006] The clamp body includes a handle and a clamp body located at the end of the handle;

[0007] A clamping and cutting assembly includes a clamping head and a cutting head located at the end of the clamp body away from the handle, and a fixed clamping and cutting head located between the clamping head and the cutting head. The fixed clamping and cutting head has a cutting blade on the surface near the cutting head and a clamping groove adapted to the clamping head on the surface near the clamping head.

[0008] The drive assembly includes a shearing drive unit disposed on the handle surface and connected to the shearing head, and a clamping drive unit disposed on the handle and connected to the clamping head, wherein the shearing drive unit and the clamping drive unit are capable of driving the shearing head and the clamping head to move respectively.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the shearing head and the clamping head can both fit against the surface of the fixed clamping head when shearing and / or clamping are not required, and the side cross-sectional area of ​​the whole formed by the shearing head, the clamping head and the clamping head after fitting against the fixed clamping head is less than or equal to the side cross-sectional area of ​​the clamp body.

[0011] Furthermore, the shearing drive unit includes a first push rod connected to one end of the shearing head, and a push switch located at the end of the first push rod away from the shearing head. The clamp body and handle are provided with a shearing movement channel for the first push rod to move. Both ends of the shearing movement channel are connected to the outside of the clamp body and handle.

[0012] Furthermore, the first push rod has an overall L-shaped structure, with the end of the first push rod away from the shear head being bent, and the end of the first push rod away from the shear head extending to the outside of the handle and then connected to the push switch.

[0013] Furthermore, the clamp head is made entirely of a flexible medical metal material, and when not under pressure, a gap is formed between the clamp head and the fixed clamping head to clamp external objects.

[0014] Furthermore, the clamping drive unit includes a second push rod disposed inside the clamp body, and a movable connecting structure connecting the second push rod and the clamping drive unit. Both the clamp body and the handle are provided with clamping movement channels for the second push rod and the movable connecting structure to move. The end of the second push rod away from the movable connecting structure is in contact with the clamp head. The end of the second push rod near the clamp head is provided with an arc surface structure. When the second push rod moves toward the fixed clamping head, the second push rod pushes the clamp head to gradually close with the fixed clamping head.

[0015] Furthermore, the clamping drive unit includes a pinch handle disposed outside the grip and an elastic member disposed between the pinch handle and the grip, wherein the end of the pinch handle away from the elastic member is connected to a movable connection structure.

[0016] Furthermore, the pinch handle is connected to the grip via a pivot, and the connecting structure consists of a connecting rod located between the pinch handle and the second push rod, and a shaft connecting the connecting rod to the pinch handle and the second push rod.

[0017] Furthermore, an elastic connector is provided between the clamp body and the push switch, which provides a force to the push switch to conform to the surface of the clamp body and make linear movements.

[0018] Beneficial effects

[0019] Compared with existing technologies, this invention, through its clamping and driving components, enables the cutting and removal of polyps during hysteroscopic sampling. When encountering large polyps, the cutting drive unit controls the cutting head to cut the base of the polyp. After the polyp base is cut off, the operator can control the clamping head to gradually tighten using the clamping drive unit, allowing the clamping head and fixed clamping head to hold the cut polyp and remove it from the patient's body. Compared with existing sampling methods that require multiple steps, this invention can achieve polyp cutting-clamping-removal without removing the entire device from the hysteroscope, making the surgical process more efficient and minimizing harm to the patient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the front section structure of the utility model clamping and cutting component when it is not opened;

[0022] Figure 2 A cross-sectional view of the clamping and cutting assembly of the utility model when it is opened;

[0023] Figure 3 For utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 For utility model Figure 1 Enlarged structural diagram at point B;

[0025] Figure 5 For utility model Figure 2 Enlarged structural diagram at point C;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Pliers body; 11. Handle; 12. Pliers body; 2. Clamping and cutting assembly; 21. Pliers clamp head; 22. Cutting head; 23. Fixed clamping and cutting head; 3. Drive assembly; 31. Cutting drive unit; 311. First push rod; 312. Push switch; 32. Pliers drive unit; 321. Second push rod; 322. Movable connection structure; 33. Handle; 34. Elastic element; 4. Elastic connector. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 technical product is in use. They are used only for the convenience of describing the technology 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 the technology. Furthermore, "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. Therefore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0032] Please see Figure 1-5 The endometrial biopsy forceps include a forceps body 1, a clamping and cutting component 2 located at one end of the forceps body 1, and a drive component 3 capable of moving the clamping and cutting component 2.

[0033] Among them, the forceps body 1 is a common structure in existing biopsy sampling forceps, mainly including the handle 11 and the forceps body 12 located at the end of the handle 11.

[0034] The clamping and cutting assembly 2 includes a clamping head 21 and a cutting head 22 located at one end of the clamp body 12 away from the handle 11, and a fixed clamping and cutting head 23 located between the clamping head 21 and the cutting head 22. The fixed clamping and cutting head 23 has a cutting blade on its surface near the cutting head 22, and a clamping groove adapted to the clamping head 21 on its surface near the clamping head 21. The driving assembly 3 includes a cutting driving part 31 located on the surface of the handle 11 and connected to the cutting head 22, and a clamping driving part 32 located on the handle 11 and connected to the clamping head 21. The cutting driving part 31 and the clamping driving part 32 can respectively drive the cutting head 22 and the clamping head 21 to move.

[0035] With the clamping and cutting assembly 2 and the driving assembly 3, when encountering a large polyp during hysteroscopy sampling, the shearing drive unit 31 first controls the shearing head 22 to cut off the base of the polyp, and then the clamping drive unit 32 controls the clamping head 21 to gradually tighten, so that the clamping head 21 and the fixed clamping and cutting head 23 clamp the cut polyp and bring it out of the patient's body. The surgical process is more efficient and the harm to the patient can be minimized.

[0036] Furthermore, to ensure that the shear head 22 and the clamp head 21 can be retracted and enter the hysteroscope together with the clamp body 12, the shear head 22 and the clamp head 21 can be in contact with the surface of the fixed clamp head 23 when no shearing and / or clamping is required. After the shear head 22 and the clamp head 21 are in contact with the fixed clamp head 23, the side cross-sectional area of ​​the whole formed by the three is less than or equal to the side cross-sectional area of ​​the clamp body 12.

[0037] Meanwhile, to facilitate the operator's operation of the shearing head 22 while holding the handle 11, the shearing drive unit 31 includes a first push rod 311 connected to one end of the shearing head 22, and a push switch 312 located at the end of the first push rod 311 away from the shearing head 22. The clamp body 12 and the handle 11 are provided with a shearing movement channel for the first push rod 311 to move. Both ends of the shearing movement channel are connected to the outside of the clamp body 12 and the handle 11. The first push rod 311 is generally L-shaped. The end of the first push rod 311 away from the shearing head 22 is bent. The end of the first push rod 311 away from the shearing head 22 extends to the outside of the handle 11 and is connected to the push switch 312.

[0038] To ensure that the clamping drive unit 32 can also control the clamping head 21 at the grip 11, as shown in the figure, the clamping drive unit 32 includes a second push rod 321 disposed inside the clamp body 12, and a movable connecting structure 322 connecting the second push rod 321 and the clamping drive unit 32. Both the clamp body 12 and the grip 11 have clamping channels inside for the second push rod 321 to move with the movable connecting structure 322. The end of the second push rod 321 away from the movable connecting structure 322 is connected to... The clamping heads 21 are in contact with each other. The second push rod 321 has an arc-shaped structure at one end near the clamping head 21. When the second push rod 321 moves towards the fixed clamping head 23, the second push rod 321 pushes the clamping head 21 to gradually close with the fixed clamping head 23. The clamping drive part 32 includes a pinch handle 33 located outside the handle 11 and an elastic member 34 located between the pinch handle 33 and the handle 11. The end of the pinch handle 33 away from the elastic member 34 is connected to the movable connection structure 322.

[0039] In some embodiments, to reduce the number of parts used in the clamp head 21 and improve its durability, the clamp head 21 is made entirely of a flexible medical metal material, which forms a gap between the clamp head 21 and the fixed clamping head 23 for clamping external objects when not under pressure.

[0040] In other embodiments, to facilitate the operator to simultaneously operate the pinch handle 33 and the grip 11 at the handle 11, the pinch handle 33 is connected to the grip 11 via a pivot. The connection structure consists of a connecting rod located between the pinch handle 33 and the second push rod 321, and a shaft connecting the connecting rod to the pinch handle 33 and the second push rod 321. Meanwhile, an elastic connector 4 is provided between the clamp body 12 and the push switch 312 to provide the push switch 312 with a force that allows the clamp body 12 to move linearly against the surface of the clamp body 12. The elastic connector 4 can be a common spring. When no force is applied, it ensures that the cutting head 22 can be retracted to the cutting fixation head, facilitating the operation of medical personnel.

[0041] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" 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 technology based on the specific circumstances.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An endometrial biopsy forceps, characterized in that, include: The clamp body (1) includes a handle (11) and a clamp body (12) disposed at the end of the handle (11); The clamping and cutting assembly (2) includes a clamping head (21) and a cutting head (22) located at one end of the clamp body (12) away from the handle (11), and a fixed clamping and cutting head (23) located between the clamping head (21) and the cutting head (22). The fixed clamping and cutting head (23) has a cutting blade on its surface near the cutting head (22), and a clamping groove adapted to the clamping head (21) is provided on its surface near the clamping head (21). The drive assembly (3) includes a shearing drive part (31) disposed on the surface of the handle (11) and connected to the shearing head (22), and a clamping drive part (32) disposed on the handle (11) and connected to the clamping head (21). The shearing drive part (31) and the clamping drive part (32) can respectively drive the shearing head (22) and the clamping head (21) to move.

2. The endometrial biopsy forceps according to claim 1, characterized in that: The shearing head (22) and the clamping head (21) can both fit against the surface of the fixed clamping head (23) when shearing and / or clamping are not required. After the shearing head (22) and the clamping head (21) fit against the fixed clamping head (23), the side cross-sectional area of ​​the whole formed by the three is less than or equal to the side cross-sectional area of ​​the clamp body (12).

3. The endometrial biopsy forceps according to claim 2, characterized in that: The shearing drive unit (31) includes a first push rod (311) connected to one end of the shearing head (22) and a push switch (312) located at the end of the first push rod (311) away from the shearing head (22). The clamp body (12) and the handle (11) are provided with a shearing movement channel for the first push rod (311) to move. Both ends of the shearing movement channel are connected to the outside of the clamp body (12) and the handle (11).

4. The endometrial biopsy forceps according to claim 3, characterized in that: The first push rod (311) has an overall L-shaped structure. The end of the first push rod (311) away from the shear head (22) is bent. The end of the first push rod (311) away from the shear head (22) extends to the outside of the handle (11) and is connected to the push switch (312).

5. The endometrial biopsy forceps according to claim 4, characterized in that: The clamp head (21) is made of elastic medical metal material. When not under pressure, a gap is formed between the clamp head (21) and the fixed clamping head (23) for clamping external objects.

6. The endometrial biopsy forceps according to claim 5, characterized in that: The clamping drive unit (32) includes a second push rod (321) disposed inside the clamp body (12) and a movable connection structure (322) connecting the second push rod (321) and the clamping drive unit (32). The clamp body (12) and the handle (11) are both provided with clamping channels for the second push rod (321) and the movable connection structure (322) to move. The end of the second push rod (321) away from the movable connection structure (322) is in contact with the clamp head (21). The end of the second push rod (321) near the clamp head (21) is provided with an arc surface structure. When the second push rod (321) moves toward the fixed clamping head (23), the second push rod (321) pushes the clamp head (21) to gradually close with the fixed clamping head (23).

7. An endometrial biopsy forceps according to claim 6, characterized in that: The clamping drive unit (32) includes a pinch handle (33) disposed outside the grip (11) and an elastic member (34) disposed between the pinch handle (33) and the grip (11). The end of the pinch handle (33) away from the elastic member (34) is connected to the movable connection structure (322).

8. The endometrial biopsy forceps according to claim 7, characterized in that: The pinch handle (33) is connected to the grip (11) via a pivot. The connection structure consists of a connecting rod located between the pinch handle (33) and the second push rod (321), and a shaft connecting the connecting rod to the pinch handle (33) and the second push rod (321).

9. An endometrial biopsy forceps according to claim 8, characterized in that: An elastic connector (4) is provided between the clamp body (12) and the push switch (312) to provide the push switch (312) with a force that allows the clamp body (12) to move linearly against the surface of the clamp body (12).

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