Novel laparoscope biopsy forceps

Abstract

The novel laparoscope biopsy forceps comprise a forceps head, a catheter, a fixed handle and a movable handle, the fixed handle and the movable handle are hinged, a guide rod is arranged in the catheter in a sliding mode, the forceps head is installed on a rotating cylinder, the rotating cylinder is connected with one end of the catheter in a rotating mode, and the catheter is arranged on the rotating cylinder. One end of the guide rod is in transmission connection with the tong head so as to control the tong head to be opened and closed, and a linkage structure is arranged between the guide rod and the rotating cylinder so as to drive the rotating cylinder to rotate; the top of the fixed handle is fixedly connected with the guide pipe, a connecting hole is formed in the top of the movable handle, the guide rod penetrates out of the guide pipe and then penetrates out of the connecting hole, and limiting parts are arranged on the guide rod and located on the two sides of the connecting hole so that the movable handle can push the guide rod to move front and back. And a rotary operation part is arranged at the exposed end of the guide rod. According to the novel laparoscope biopsy forceps provided by the utility model, the angle of the forceps head can be conveniently adjusted, so that the success rate of material drawing in an operation is improved, and unnecessary trauma to a patient is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a novel laparoscopic biopsy forceps. Background Art

[0002] With the continuous development of clinical medicine, the invention of laparoscope has brought revolutionary improvements to the surgical treatment of general surgery. Laparoscopic surgery has gradually replaced traditional surgery with advantages such as less trauma and more delicate operation. The operating instruments of laparoscopic surgery are all cylindrical with a diameter of about 5mm. The small trauma and micro-operation make the narrow space in the abdominal cavity more obvious. For patients with unknown causes who need surgical exploration, pathological examination of living tissue samples is required during the operation to understand the nature of the lesion and make a clear diagnosis.

[0003] Utility model patent CN 206044658 U discloses a laparoscopic electrocoagulation biopsy forceps, comprising a pair of forceps bodies, a material collection extension, a telescopic control rod, a hand-held handle and an electrode connection port; one end of the pair of forceps bodies crosses to form an "X"-shaped structure and is connected to one end of the telescopic control rod; the material collection extension is a hollow tubular structure, the telescopic control rod is coaxially arranged in the material collection extension, the other end of the pair of forceps bodies is exposed outside one end of the material collection extension, and is retracted into the telescopic control rod through the telescopic control rod; the hand-held handle is connected to the other end of the material collection extension, the other end of the telescopic control rod passes through the material collection extension and is connected to the end of the hand-held handle, and the telescopic control rod is horizontally pulled through the hand-held handle; the electrode connection port is arranged on the hand-held handle.

[0004] The clamp body of the utility model patent can only be opened and closed. During the operation, the hand holding the handle often needs to rotate a certain angle to find a suitable clamping angle, but the rotation of the wrist has great uncertainty and it is difficult to adjust to a suitable angle. Therefore, it is necessary to develop a biopsy forceps that is convenient for sampling. Utility Model Content

[0005] In order to make up for the deficiencies in the prior art, the utility model provides a novel laparoscopic biopsy forceps, the angle of which can be easily adjusted to improve the success rate of surgical sampling and reduce unnecessary trauma to patients.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A novel laparoscopic biopsy forceps comprises a forceps head, a catheter, a fixed handle and a movable handle which are hinged to each other. A guide rod is slidably provided in the catheter, the forceps head is mounted on a rotating cylinder, the rotating cylinder is rotatably connected to one end of the catheter, one end of the guide rod is transmission-connected to the forceps head to control the opening and closing of the forceps head, a linkage structure is provided between the guide rod and the rotating cylinder to drive the rotating cylinder to rotate; the top of the fixed handle is fixedly connected to the catheter, the top of the movable handle is provided with a connecting hole, the guide rod passes through the catheter and then into the connecting hole, limiting parts are provided on both sides of the connecting hole on the guide rod so that the movable handle can push the guide rod to move forward and backward, and a rotating operating part is provided at the exposed end of the guide rod.

[0008] Furthermore, the pliers head is provided with a U-shaped cutting portion, the arc-shaped side of the cutting portion is a flat blade, and the straight side is a serrated blade.

[0009] Furthermore, the pliers head comprises a fixed pliers head and a movable pliers head, the fixed pliers head is fixedly connected to the rotating cylinder, the movable pliers head is hinged to the rotating cylinder, and the movable pliers head is connected to the guide rod via a connecting rod.

[0010] Furthermore, both the fixed forceps head and the movable forceps head are provided with a tissue receiving groove.

[0011] Furthermore, the linkage structure includes a ridge arranged on the guide rod and a groove arranged on the inner wall of the rotating cylinder, the groove is arranged along the axial direction of the rotating cylinder, and the ridge is arranged in the groove.

[0012] Furthermore, the rotating operating part is cylindrical and the outer wall is provided with anti-slip grooves.

[0013] Furthermore, an elastic member is connected between the fixed handle and the movable handle.

[0014] Furthermore, the guide rod outer sleeve is provided with a damping washer.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] 1. The pliers head of the utility model is installed on a rotating cylinder, and the rotating cylinder can rotate along with the guide rod. When in use, the doctor's hand holding the handle can remain still, and the doctor helps to rotate the guide rod by rotating the operating part, so that the pliers head is rotated to a suitable material collection angle, thereby improving the success rate of material collection.

[0017] 2. The pliers head of the utility model is provided with a U-shaped cutting part, and the lesion tissue can be quickly cut off through the cooperation of the two blades, and there is no thermal damage compared to the electric knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1The utility model is a structural diagram of a novel laparoscopic biopsy forceps.

[0019] Figure 2 The utility model is a local cross-sectional view of a novel laparoscopic biopsy forceps.

[0020] Among them: 1. pliers head; 11. fixed pliers head; 12. movable pliers head; 13. cutting part; 2. guide tube; 3. fixed handle; 4. movable handle; 5. guide rod; 51. limiting part; 52. rotating operation part; 53. convex ridge; 6. rotating cylinder; 61. groove; 7. damping washer; 8. elastic part. DETAILED DESCRIPTION

[0021] Many specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from the description, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Example 1

[0023] like Figure 1-2 As shown, a novel laparoscopic biopsy forceps comprises a forceps head 1, a catheter 2, a hinged fixed handle 3 and a movable handle 4, and a guide rod 5 is slidably arranged in the catheter 2. The forceps head 1 is mounted on a rotating cylinder 6, and the rotating cylinder 6 is rotatably connected to one end of the catheter 2. One end of the guide rod 5 is transmission-connected to the forceps head 1 to control the opening and closing of the forceps head 1, and a linkage structure is arranged between the guide rod 5 and the rotating cylinder 6 to drive the rotating cylinder 6 to rotate.

[0024] The top of the fixed handle 3 is fixedly connected to the catheter 2, and a connecting hole is provided on the top of the movable handle 4. The guide rod 5 passes through the catheter 2 and then passes through the connecting hole. The guide rod 5 is provided with a limit portion 51 on both sides of the connecting hole, so that the movable handle 4 can push the guide rod 5 to move forward and backward, thereby controlling the opening and closing of the clamp head 1.

[0025] The exposed end of the guide rod 5 is provided with a rotating operating part 52. By twisting the rotating operating part 52, the guide rod 5 can be rotated, and the guide rod 5 then drives the rotating cylinder 6 to rotate through the linkage structure, thereby realizing the rotation of the pliers head. The rotating operating part 52 is cylindrical and has anti-slip grooves on the outer wall.

[0026] The limiting portion 51 may be a convex strip or a convex ring, preferably a convex ring, and the limiting portion close to the rotation operation portion 52 is connected to the rotation operation portion as a whole.

[0027] The pliers head 1 comprises a fixed pliers head 11 and a movable pliers head 12, wherein the fixed pliers head 1 is fixedly connected to the rotating cylinder 6, the movable pliers head 12 is hinged to the rotating cylinder 6, and the movable pliers head 12 is connected to the guide rod 5 via a connecting rod. The fixed pliers head 11 and the movable pliers head 12 are provided with corresponding U-shaped cutting parts 13, wherein the arc edge of the cutting part 13 is a flat blade and the straight edge is a serrated blade.

[0028] The fixed forceps head 11 and the movable forceps head 12 are both provided with a tissue receiving groove for receiving cut human tissue. The cutting portion 13 is provided at the edge of the tissue receiving groove.

[0029] The linkage structure includes a convex rib 53 provided on the guide rod 5 and a groove 61 provided on the inner wall of the rotating cylinder 6. The groove 61 is provided along the axial direction of the rotating cylinder 6, and the convex rib 53 is provided in the groove 61. In this way, when the guide rod 5 is extended or retracted, the convex rib 53 slides in the groove 61 along the axial direction and does not drive the rotating cylinder 6 to rotate; when the guide rod 5 rotates, the convex rib 53 rotates circumferentially and can drive the rotating cylinder 6 to rotate.

[0030] The outer sleeve of the guide rod 5 is provided with a damping washer 7, which can increase the damping feeling when the guide rod 5 slides or rotates, and prevent the guide rod 5 from sliding or rotating due to a small bump. An elastic member 8 is connected between the fixed handle 3 and the movable handle 4.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel laparoscopic biopsy forceps, comprising a forceps head, a catheter, a fixed handle and a movable handle hinged to each other, wherein a guide rod is slidably arranged in the catheter, and characterized in that: The pliers head is mounted on a rotating cylinder, which is rotatably connected to one end of the catheter, and one end of the guide rod is transmission-connected to the pliers head to control the opening and closing of the pliers head. A linkage structure is provided between the guide rod and the rotating cylinder to drive the rotating cylinder to rotate. The top of the fixed handle is fixedly connected to the catheter, and a connecting hole is provided on the top of the movable handle. The guide rod passes through the catheter and then passes through the connecting hole. Limiting parts are provided on both sides of the connecting hole on the guide rod so that the movable handle can push the guide rod to move forward and backward. A rotating operating part is provided at the exposed end of the guide rod.

2. The novel laparoscopic biopsy forceps according to claim 1 is characterized in that: The pliers head is provided with a U-shaped cutting portion, the arc side of the cutting portion is a flat blade, and the straight side is a serrated blade.

3. The novel laparoscopic biopsy forceps according to claim 2 is characterized in that: The pliers head comprises a fixed pliers head and a movable pliers head, the fixed pliers head is fixedly connected to the rotating cylinder, the movable pliers head is hinged to the rotating cylinder, and the movable pliers head is connected to the guide rod through a connecting rod.

4. The novel laparoscopic biopsy forceps according to claim 3 is characterized in that: The fixed clamp head and the movable clamp head are both provided with a tissue accommodating groove.

5. The novel laparoscopic biopsy forceps according to any one of claims 1 to 4, characterized in that: The linkage structure comprises a convex ridge arranged on the guide rod and a groove arranged on the inner wall of the rotating cylinder, the groove is arranged along the axial direction of the rotating cylinder, and the convex ridge is arranged in the groove.

6. The novel laparoscopic biopsy forceps according to claim 5 is characterized in that: The rotating operation part is columnar and has an outer wall provided with anti-slip grooves.

7. The novel laparoscopic biopsy forceps according to claim 6 is characterized in that: An elastic member is connected between the fixed handle and the movable handle.

8. The novel laparoscopic biopsy forceps according to claim 7 is characterized in that: The guide rod outer sleeve is provided with a damping washer.

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