Nasopharynx biopsy forceps
By introducing a torsion spring connection in the nasopharyngeal biopsy forceps, the automatic clamping and loosening of the movable forceps head is achieved, which solves the problem of the existing technology requiring hands to maintain clamping and improves the stability of the specimen and the stability of the operation.
Patent Information
- Application Number
- CN202422376399.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The hook head of the prior art requires medical staff to keep it clamped by their hands after sampling, which requires high operating skills and can easily cause the specimen to fall off.
A nasopharyngeal biopsy forceps is designed. The fixed clamp handle and the movable clamp handle are connected by a torsion spring. The elastic force of the torsion spring is used to automatically clamp and release the movable clamp head, thereby improving the stability of the specimen.
It effectively avoids the specimen from falling off during sampling and movement, and improves the stability and safety of the operation.
Smart Images
Figure CN223365578U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical instruments, in particular to a pair of nasopharyngeal biopsy forceps. Background Art
[0002] Nasopharyngeal biopsy forceps are devices used by medical institutions to take samples from nasopharyngeal cancer patients for pathological examination. The nasopharyngeal biopsy forceps clamp the sample specimen with two clamp heads at the front end. However, after taking the sample, the clamp heads of the existing nasopharyngeal biopsy forceps need to apply force with the hands of medical staff to keep the clamp heads clamped to prevent the sample from falling off. The entire sampling process requires high operating skills of medical staff. When the biopsy forceps are moved and taken out, it is easy for the clamp heads to loosen and the sample to fall off.
[0003] Therefore, we propose a nasopharyngeal biopsy forceps to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a nasopharyngeal biopsy forceps to solve the problems raised in the above background technology.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A nasopharyngeal biopsy forceps comprises a fixed rod and a movable rod, wherein one end of the fixed rod is connected to a fixed rod head, and the other end of the fixed rod is connected to a fixed rod handle, one end of the movable rod is hinged to the movable rod head, and the other end of the movable rod is hinged to the movable rod handle, the movable rod head is rotatably connected to a shaft rod 1 on the fixed rod, the fixed rod handle and the movable rod handle are hingedly connected via a shaft rod 4, and a torsion spring is further installed between the fixed rod handle and the movable rod handle, so that when the movable rod handle is clamped close to the fixed rod handle, the movable rod handle controls the opening of the movable rod head;
[0007] The movable clamp rod includes connecting rod 1, connecting rod 2, shaft rod 2 and shaft rod 3, and connecting rod 1 and connecting rod 2 are connected through shaft rod 2. Shaft rod 2 passes through the rotating seat on the fixed clamp rod, and connecting rod 1 and connecting rod 2 are symmetrical about the center of shaft rod 2. Shaft rod 3 is respectively fixed on the ends of connecting rod 1 and connecting rod 2 that are opposite to each other.
[0008] In a further embodiment, straight slot holes are provided at the connection points between the movable pliers handle and the movable pliers head and the shaft rod three.
[0009] In a further embodiment, a concave edge is provided along the edge of the upper surface of the fixed pliers head, and a convex edge matching the concave edge is provided along the edge of the lower surface of the movable pliers head.
[0010] In a further embodiment, a receiving groove is provided inside the fixed clamp head, and the receiving groove is connected to the concave edge.
[0011] In a further embodiment, a ring handle is provided at the bottom of the fixed clamp handle.
[0012] In a further embodiment, fixing seats are symmetrically installed on opposite sides of the fixed pliers handle and the movable pliers handle, and the end rod of the torsion spring passes through the fixing seat. A bolt is screwed onto the outside of the fixing seat, and the bolt presses against the end rod of the torsion spring.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The utility model is that when the fixed clamp handle and the movable clamp handle are pinched, the movable clamp handle can drive the movable clamp rod to pull the movable clamp head to open relative to the fixed clamp head, so that sampling is carried out, and the torsion spring is compressed at the same time. When the fixed clamp handle and the movable clamp handle are loosened, the movable clamp head can be driven to reset under the elastic reaction of the torsion spring, thereby clamping the specimen together with the fixed clamp head, effectively improving the stability of specimen clamping and avoiding the problem of specimen falling off and being lost when moving for sampling. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a front structural diagram of the utility model;
[0016] Figure 2 This is a rear view structural diagram of the utility model;
[0017] Figure 3 This is a schematic structural diagram of the fixed clamp rod, fixed clamp head and fixed clamp handle of the utility model;
[0018] Figure 4 This is a schematic structural diagram of the movable pliers rod, movable pliers head and movable pliers handle of the utility model;
[0019] Figure 5 This is a schematic diagram of the fixed clamp head structure of the utility model;
[0020] Figure 6 For this utility model Figure 4 Schematic diagram of the locally enlarged structure at point A in the middle.
[0021] In the figure: 1. Fixed clamp rod; 11. Rotating seat; 12. Shaft rod 1; 2. Moving clamp rod; 21. Connecting rod 1; 22. Connecting rod 2; 23. Shaft rod 2; 24. Shaft rod 3; 3. Fixed clamp head; 31. Concave edge; 32. Accommodating groove; 4. Moving clamp head; 41. Concave edge; 5. Fixed clamp handle; 51. Ring handle; 6. Moving clamp handle; 7. Shaft rod 4; 8. Torsion spring; 81. Fixed seat; 82. Bolt; 9. Straight slot hole. DETAILED DESCRIPTION
[0022] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] See also Figure 1-4 The tongs 3 are connected to the tongs 4 by a spring, and the other end of the tongs 3 is connected to the tongs 4 by a spring.
[0026] See also Figure 1-4In order to facilitate the use of the movable clamp rod 2, the movable clamp rod 2 is provided with a connecting rod 1 21, a connecting rod 22, a shaft rod 23 and a shaft rod 3 24, wherein the connecting rod 1 21 and the connecting rod 2 22 are connected by the shaft rod 23, the shaft rod 23 passes through the rotating seat 11 on the fixed clamp rod 1, and the rotating seat 11 is fixed to the middle position of the fixed clamp rod 1. The connecting rod 1 21 and the connecting rod 2 22 are symmetrical about the center of the shaft rod 2 23, and the connecting rod 1 21 and the connecting rod 2 22 are staggered on both sides of the fixed clamp rod 1 so that the connecting rod 1 21 and the connecting rod 2 22 can be moved. The rotation is not blocked by the fixed clamp rod 1, and the shaft rod three 24 is respectively fixed on the opposite ends of the connecting rod 1 21 and the connecting rod 2 22. The shaft rod three 24 is parallel to the shaft rod 2 23. The shaft rod three 24 of the connecting rod 1 21 is rotatably connected to the tail end of the movable clamp head 4, and the shaft rod three 24 of the connecting rod 22 is rotatably connected to the head end of the movable clamp handle 6, so that when the movable clamp handle 6 is clamped relative to the fixed clamp handle 5, the head end of the movable clamp handle 6 drives the connecting rod 2 22 to rotate upward. At this time, the connecting rod 1 21 rotates downward, pulling the tail end of the movable clamp head 4 downward to open its head end.
[0027] See also Figure 1-2 and Figure 4 Considering that the distances between connecting rod 1 21 and connecting rod 2 22 and the movable pliers head 4 and movable pliers handle 6 change when they rotate, in order to ensure the stability of transmission, straight slot holes 9 are provided at the connections between the movable pliers handle 6 and movable pliers head 4 and shaft rod 3 24 respectively, so that shaft rod 3 24 can move inside the straight slot holes 9 while rotating.
[0028] See also Figure 4-5 The upper surface of the fixed clamp head 3 is provided with a concave edge 31 along the edge, and the lower surface of the movable clamp head 4 is provided with a convex edge 41 along the edge that matches the concave edge 31, so that the specimen can be removed conveniently when the convex edge 41 and the concave edge 31 are engaged. A receiving groove 32 is provided inside the fixed clamp head 3, and the receiving groove 32 is connected to the concave edge 31 to facilitate the accommodation of the specimen.
[0029] See also Figure 1-3 In order to facilitate the user's operation, a ring handle 51 is provided at the bottom of the fixed clamp handle 5. When in use, the fingers pass through the ring handle 51 to improve the firmness and prevent accidental falling off.
[0030] See also Figure 6 In order to facilitate assembly, a fixing seat 81 is symmetrically installed on the opposite sides of the fixed clamp handle 5 and the movable clamp handle 6, and the end rod of the torsion spring 8 passes through the fixing seat 81. A bolt 82 is screwed to the outside of the fixing seat 81, and the bolt 82 presses against the end rod of the torsion spring 8. By controlling the distance between the end rod of the torsion spring 8 and the fixing seat 81, the resistance of the torsion spring 8 can also be adjusted to ensure that the clamp head can be clamped firmly during rebound.
[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A nasopharyngeal biopsy forceps, comprising a fixed forceps rod (1) and a movable forceps rod (2), characterized in that: One end of the fixed clamp rod (1) is connected to a fixed clamp head (3), and the other end of the fixed clamp rod (1) is connected to a fixed clamp handle (5); one end of the movable clamp rod (2) is hinged to a movable clamp head (4), and the other end of the movable clamp rod (2) is hinged to a movable clamp handle (6); the movable clamp head (4) is rotatably connected to a shaft rod (12) on the fixed clamp rod (1); the fixed clamp handle (5) and the movable clamp handle (6) are hinged through a shaft rod (7); a torsion spring (8) is further installed between the fixed clamp handle (5) and the movable clamp handle (6); when the movable clamp handle (6) is clamped close to the fixed clamp handle (5), the movable clamp head (4) is controlled to open through the movable clamp rod (2); The movable clamp rod (2) includes a connecting rod 1 (21), a connecting rod 2 (22), an axle rod 2 (23) and an axle rod 3 (24), and the connecting rod 1 (21) and the connecting rod 2 (22) are connected through the axle rod 2 (23), the axle rod 2 (23) passes through the rotating seat (11) on the fixed clamp rod (1), and the connecting rod 1 (21) and the connecting rod 2 (22) are symmetrical about the center of the axle rod 2 (23), and the axle rod 3 (24) is respectively fixed to the ends of the connecting rod 1 (21) and the connecting rod 2 (22) that are away from each other.
2. The nasopharyngeal biopsy forceps according to claim 1, characterized in that: The connection points between the movable pliers handle (6) and the movable pliers head (4) and the shaft rod three (24) are both provided with straight slot holes (9).
3. The nasopharyngeal biopsy forceps according to claim 1, characterized in that: The upper surface of the fixed pliers head (3) is provided with a concave edge (31) along the edge, and the lower surface of the movable pliers head (4) is provided with a convex edge (41) matching the concave edge (31) along the edge.
4. The nasopharyngeal biopsy forceps according to claim 3, characterized in that: An accommodating groove (32) is provided inside the fixed clamp head (3), and the accommodating groove (32) is connected to the concave edge (31).
5. The nasopharyngeal biopsy forceps according to claim 1, characterized in that: A ring handle (51) is provided at the bottom of the fixed clamp handle (5).
6. The nasopharyngeal biopsy forceps according to claim 1, characterized in that: A fixing seat (81) is symmetrically mounted on opposite sides of the fixed pliers handle (5) and the movable pliers handle (6), and the end rod of the torsion spring (8) passes through the fixing seat (81). A bolt (82) is screwed onto the outside of the fixing seat (81), and the bolt (82) presses against the end rod of the torsion spring (8).