A flexible biopsy forceps

Abstract

The utility model discloses a kind of bendable biopsy forceps, comprising: guide tube, inner tube is equipped in guide tube inside, guide tube one end is connected with handle part, and the other end is connected with chuck part through bending part;Handle part is hollow pipe body, and sliding block is equipped on pipe body, and sliding block is connected with the first guide rod in handle part inside, and sliding handle is slidably sleeved on handle part outside, and sliding handle is connected with the second guide rod in handle part inside;Bending part includes rotating shaft, rotating shaft is rotatably connected in recessed groove part on chuck part and guide tube, spherical top is fixedly connected with third guide rod, and third guide rod is linked with the first guide rod by balance shaft being equipped on inner tube, and sliding block drives rotating shaft bending is pushed.The application solves the problem that the bending angle of traditional sampling forceps is limited, the operation is complex, and the safety is low, has the advantages of single-hand controllable, accurate sampling, safety anti-slip, length visualization, and is suitable for multiple scenes endoscopy biopsy in digestive tract, respiratory tract and the like.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and more specifically to a flexible biopsy forceps. Background Technology

[0002] Biopsy forceps are primarily used for endoscopic biopsies of tissues from the stomach, intestines, bladder, bronchi, cervix, and other sites. These samples are then analyzed pathologically to provide a scientific basis for disease diagnosis, such as determining the benign or malignant nature of tumors and the type of inflammation. They can also be used to remove foreign bodies. However, current biopsy forceps are difficult to bend, have smooth catheter surfaces lacking tactile markings, and are prone to misjudging insertion depth under laparoscopy, leading to sample displacement. Furthermore, the pins on the forceps can easily irritate the patient.

[0003] Utility model patent application number 202022540396.2 discloses a pre-bent endoscopic biopsy forceps, including a sampling part, an integral insertion part, and a pre-bent part. The pre-bent part is a spring-loaded tube that has undergone pre-bending treatment. The insertion part and the sampling part are respectively connected to the two ends of the spring-loaded tube, which is made of an elastic material. Although the forceps can be bent, the bending angle cannot be adjusted arbitrarily, and the pre-bent forceps are not easy to pass through the endoscope.

[0004] Therefore, there is an urgent need to design a safe and flexible biopsy forceps. Utility Model Content

[0005] This invention provides a flexible biopsy forceps to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides a flexible biopsy forceps, comprising: a guide tube with an inner tube inside; one end of the guide tube is connected to a handle, and the other end is connected to a clamp head via a bending portion; the handle is a hollow tube with a slider on its side wall, the slider being connected to a first guide rod located inside the handle; a sliding handle is slidably fitted outside the handle, and the sliding handle is connected to a second guide rod located inside the handle; the bending portion includes a rotating shaft rotatably connected to a groove on the clamp head and the guide tube; the rotating shaft is a hollow sphere, with a third guide rod fixedly connected to the top of the sphere; the third guide rod is linked to the first guide rod via a balance shaft located on the inner tube, pushing the slider to bend the rotating shaft.

[0007] Preferably, the guide tube has multiple protrusions evenly distributed at equal intervals for identifying the length of the guide tube;

[0008] Preferably, the top of the handle portion is provided with a thumb ring.

[0009] Preferably, the clamp head includes a cup holder, a pair of pliers cups are movably connected to the cup holder by a pin, and a top head is fixedly connected to the inside of the pliers cup and the cup holder.

[0010] Preferably, the open end of the tip is a rectangular plane, which can be used to help fix the position of the forceps cup without irritating the patient.

[0011] Preferably, the sliding handle includes a slide cylinder, and both ends of the slide cylinder are provided with limiting platforms to facilitate the user to operate the slide cylinder with one hand and slide it on the handle.

[0012] Preferably, the inner tube has an annular groove at the balance shaft, the groove diameter being larger than the balance shaft diameter, and a return spring is provided on the groove to facilitate the balance shaft's return movement.

[0013] Preferably, the rotating shaft is provided with an elongated groove in the direction corresponding to the third guide rod, and the second guide rod passes through the groove and connects to the pliers cup.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The linkage structure of the slider, sliding handle, and internal guide rod allows for precise control of the bending angle of the curved section, facilitating flexible operation within complex human cavities. The special design of the clamp head ensures stable opening and closing of the forceps cup, while the rectangular plane of the tip helps stabilize the position and minimizes patient irritation. Protrusions on the guide tube facilitate length identification, the limiting platform of the sliding handle allows for easy one-handed operation, and the internal tube return spring ensures rapid recovery after operation. This sampling forceps is convenient to operate, accurate in sampling, and highly safe, effectively solving the problems of inconvenience and patient injury associated with traditional sampling forceps in complex cavities, thus improving the efficiency and quality of biopsy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 The attached figure is a structural schematic diagram of this utility model.

[0018] Figure 2 The attached figure is a schematic diagram of the handle part of this utility model.

[0019] Figure 3 The attached figure is a schematic diagram of the curved section structure of this utility model.

[0020] Figure 4 The attached figure is a schematic diagram of the clamping head structure of this utility model.

[0021] Reference numerals: 1. Handle; 2. Guide tube; 3. Clamp head; 4. Bend; 11. Thumb ring; 21. Protrusion; 12. Slider; 13. First guide rod; 14. Sliding handle; 15. Second guide rod; 16. Limiting sleeve; 22. Balance shaft; 23. Third guide rod; 24. Rotating shaft; 31. Cup holder; 32. Pin; 33. Pliers cup; 34. Top head. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, various embodiments of this patent will be described below with reference to text and accompanying drawings. For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details in the specification should not be used to limit this patent. That is, in some embodiments of this patent, these practical details are not essential. Furthermore, for ease of understanding, some conventional structures and components will be illustrated in the drawings in a simple schematic manner.

[0023] In the description of this patent, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent 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 patent.

[0024] Furthermore, the terms "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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this patent, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this patent.

[0027] Please see the appendix Figure 1-4 The present invention discloses a flexible biopsy forceps, comprising: a guide tube 2, wherein a plurality of protrusions 21 are evenly distributed on the guide tube 2 at equal intervals for identifying the length of the guide tube 2; the guide tube 2 has circular protrusions 21 at 5 cm intervals on its surface, which are marked with fluorescent coating and marked with specific length numbers, so that the user can clearly identify the insertion depth by touch and color markings during operation, avoiding excessive insertion and damage to tissue.

[0028] The guide tube 2 has an inner tube inside. One end of the guide tube 2 is connected to the handle part 1, and the other end is connected to the clamp head 3 through the bending part 4.

[0029] To further optimize the above technical solution, a thumb ring 11 is provided at the top of the handle part 1. The thumb can be inserted into the thumb ring 11 to increase grip stability and facilitate one-handed operation. The handle part 1 is a hollow tube, and a slider 12 is provided on the side wall of the tube. The slider 12 is connected to the first guide rod 13 located inside the handle part 1.

[0030] To further optimize the above technical solution, a sliding handle 14 is slidably sleeved on the outside of the handle part 1, and the sliding handle 14 is connected to the second guide rod 15 located inside the handle part 1; the sliding handle 14 includes a slide cylinder, and both ends of the slide cylinder are provided with limiting platforms, so that the user can operate the slide cylinder with one hand to slide on the handle part 1.

[0031] When holding the handle 1 with one hand, the thumb is inserted into the thumb ring 11, and the slider 12 is slid to control the first guide rod 13 to move in a straight line and control the bending angle of the curved part 4; the index and middle fingers can hold and push the slide to control the second guide rod 15 to move in a straight line and control the opening and closing of the cup seat 31 on the clamp head 3.

[0032] To further optimize the above technical solution, the bending part 4 includes a rotating shaft 24, which is rotatably connected in the groove on the clamp head 3 and the guide tube 2. The rotating shaft 24 is a hollow sphere, and the top of the sphere is fixedly connected to a third guide rod 23. The third guide rod 23 is linked with the first guide rod 13 through a balance shaft 22 on the inner tube, which pushes the slider 12 to drive the rotating shaft 24 to bend.

[0033] To further optimize the above technical solution, an annular groove is provided at the balance shaft 22 on the inner tube. The diameter of the groove is larger than the diameter of the balance shaft 22, and a return spring is provided on the groove to facilitate the return movement of the balance shaft 22. After the slider 12 is released, the return spring pushes the balance shaft 22 back to its original position, so that the bent part 4 automatically returns to a straight state.

[0034] To further optimize the above technical solution, the rotating shaft 24 is provided with a long groove in the direction corresponding to the third guide rod 23, and the second guide rod 15 passes through the groove and is connected to the pliers cup 33.

[0035] To further optimize the above technical solution, the clamp head 3 includes a cup seat 31, and a pair of clamp cups 33 are movably connected to the cup seat 31 in a scissor-like manner by pins 32 to form an opening and closing structure.

[0036] To further optimize the above technical solution, a tip 34 is fixedly connected to the inside of the forceps cup 33 and the cup base 31. The open end of the tip 34 is a rectangular plane, which can be used to assist in fixing the position of the forceps cup 33 without irritating the patient. When the forceps cup 33 is closed, the rectangular plane of the tip 34 fits against the inner wall of the forceps cup 33, assisting in fixing the position of the forceps cup 33 and ensuring that the tissue sample will not easily fall off during sampling. At the same time, the rounded edges of the rectangular plane avoid sharp parts from irritating the patient, balancing fixation function and safety. When closed, the tip 34 abuts against the base of the forceps cup 33 to prevent excessive clamping and damage to tissue. The planar design reduces mucosal irritation.

[0037] How to use:

[0038] 1. Observe the target to be biopsied under endoscopy and select a side-rotating biopsy forceps that matches the endoscope.

[0039] 2. Pull the sliding handle to close the forceps cup and insert the side-rotating biopsy forceps into the endoscopic biopsy channel.

[0040] 3. Slowly push the side-rotating biopsy forceps until its head can be seen protruding under the endoscope.

[0041] 4. Determine the pushing distance using the protrusion 21 and the number on the guide tube 2, push the biopsy forceps to the biopsy site, push the slider 12 to rotate the head 3 to the appropriate angle, push the sliding handle to open the forceps cup, push the tip 34 into the biopsy tissue, and rotate the forceps cup 33 around the pin.

[0042] 5. Pull the sliding handle 14 to close the forceps cup 33 around the tissue to complete the sampling. Push the slider 12 spring to expand, the balance shaft retracts and the guide rod system resets, and the bent part returns to a straight line.

[0043] 6. Apply gentle pressure to the sliding handle 14 to keep the forceps cup 33 closed during the withdrawal of the endoscope, and pull the biopsy forceps back from the channel.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible biopsy forceps, characterized in that, include: A guide tube (2) is provided inside the guide tube (2). One end of the guide tube (2) is connected to the handle part (1), and the other end is connected to the clamp head (3) through the bend (4). The handle part (1) is a hollow tube body. A slider (12) is provided on the side wall of the tube body. The slider (12) is connected to the first guide rod (13) provided inside the handle part (1). A sliding handle (14) is slidably sleeved on the outside of the handle part (1). The sliding handle (14) is connected to the first guide rod (13) provided inside the handle part (1). 1) The second guide rod (15) inside is connected; the bending part (4) includes a rotating shaft (24), which is rotatably connected in the groove on the clamp head (3) and the guide tube (2). The rotating shaft (24) is a hollow sphere, and the top of the sphere is fixedly connected to the third guide rod (23). The third guide rod (23) is linked with the first guide rod (13) through the balance shaft (22) on the inner tube, and pushes the slider (12) to drive the rotating shaft (24) to bend.

2. The flexible biopsy forceps according to claim 1, characterized in that, Multiple protrusions (21) are evenly distributed at equal intervals on the guide tube (2) to identify the length of the guide tube (2).

3. The flexible biopsy forceps according to claim 1, characterized in that, The handle (1) is provided with a thumb ring (11) at the top.

4. The flexible biopsy forceps according to claim 1, characterized in that, The clamp head (3) includes a cup seat (31), which is movably connected to a pair of plier cups (33) by a pin (32). The plier cups (33) are fixedly connected to the cup seat (31) with a top head (34).

5. The flexible biopsy forceps according to claim 4, characterized in that, The open end of the top head (34) is a rectangular plane, which can be used to help fix the position of the forceps cup (33) without irritating the patient.

6. The flexible biopsy forceps according to claim 1, characterized in that, The sliding handle (14) includes a slide cylinder, and both ends of the slide cylinder are provided with limiting platforms, which makes it convenient for the user to operate the slide cylinder with one hand to slide on the handle (1).

7. The flexible biopsy forceps according to claim 1, characterized in that, The inner tube has an annular groove at the balance shaft (22), the diameter of which is larger than the diameter of the balance shaft (22). A reset spring is provided on the groove to facilitate the reset movement of the balance shaft (22).

8. The flexible biopsy forceps according to claim 4, characterized in that, The rotating shaft (24) is provided with a long groove in the direction corresponding to the third guide rod (23), and the second guide rod (15) passes through the groove and is connected to the pliers cup (33).

Images