Biopsy forceps connecting piece processed by cold forging process

Abstract

The utility model discloses a biopsy forceps connecting piece processed by cold forging technology, which comprises a cup seat, one end of the cup seat is movably connected with two forceps cups, the cup seat is provided with an inner hole, a push-pull rod is connected in the inner hole, the push-pull rod penetrates through the inner hole and is connected with the cup seat, and the forceps cups are connected with the push-pull rod. The end, facing the pliers cup, of the push-pull rod is movably connected with the pliers cup and drives the pliers cup to be opened and closed, a connecting piece assembly is connected between the push-pull rod and the pliers cup, and the connecting piece assembly is connected with the tail of the pliers cup and the end of the push-pull rod. The push-pull rod drives the pliers cup to be opened and closed through the connecting piece assembly. The connecting piece, the pliers cup and the push-pull rod which are punched and formed through the cold forging process can effectively reduce the production cost of parts. And meanwhile, through the structural design of the connecting piece of the single-double-column structure, the structural complexity in a powder metallurgy machining mode can be kept, and meanwhile, the subsequent complex connecting process is prevented from being added.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a biopsy forceps connector processed by cold forging. Background Technology

[0002] Disposable biopsy forceps (hereinafter referred to as biopsy forceps) are routine consumables for endoscopic biopsy, and their manufacturing process is quite mature. The main development trends of this product are to simplify the product structure, reduce production costs, and improve product performance stability.

[0003] The forceps head assemblies for biopsy on the market are mainly divided into two types: linkage structure and hook structure. Compared with the hook structure, the linkage structure has more stable force transmission, but the core functional parts (forceps cup and connecting piece) are mostly processed by powder metallurgy, which is costly and has a long processing cycle.

[0004] Hook-structure sampling clamp head assembly: This structure uses two wire hooks instead of two connecting plates and a push-pull rod.

[0005] Traditional linkage structure sampling pliers head assembly 1: It consists of powder metallurgy pliers cup, powder metallurgy connecting plate plus push-pull rod, cup seat and other parts.

[0006] Traditional linkage structure sampling pliers head assembly 2: It consists of stamped pliers cup, stamped connecting piece, T-shaped pin plus push-pull rod, cup seat and other parts.

[0007] The existing hook-structure clamping head assembly also has the disadvantage that the force transmission effect is slightly worse than that of the linkage structure when in use.

[0008] Clamping head assembly 1: This structure is the most conventional structure used in the market. It has stable performance, but the powder metallurgy processing cost is high and the processing cycle is long.

[0009] Clamping head assembly 2: This structure is an upgraded version of assembly 1. The raw material cost is slightly reduced, but the assembly efficiency of the assembly is lower, requiring at least two additional welding or riveting processes.

[0010] Therefore, improvements to the forceps head assembly of the biopsy forceps are needed to solve the above problems. Utility Model Content

[0011] The purpose of this invention is to provide a biopsy forceps connector processed by cold forging, so as to overcome the shortcomings of the prior art.

[0012] To achieve the above objectives, this utility model provides the following technical solution:

[0013] This application discloses a biopsy forceps connector processed by cold forging, including a cup holder. Two forceps cups are movably connected to one end of the cup holder. The cup holder has an inner hole, and a push-pull rod is connected to the inner hole. The push-pull rod passes through the inner hole and is connected to the cup holder. The end of the push-pull rod facing the forceps cup is movably connected to the forceps cup and drives the forceps cup to open and close. A connecting piece assembly is connected between the push-pull rod and the forceps cup. The connecting piece assembly connects the tail of the forceps cup to the end of the push-pull rod. The push-pull rod drives the forceps cup to open and close through the connecting piece assembly.

[0014] Preferably, the pliers cup and push-pull rod are both formed by cold forging.

[0015] Preferably, the connecting piece assembly is formed by cold forging.

[0016] Preferably, the connecting piece assembly includes a single-column connecting piece and a double-column connecting piece. The single-column connecting piece has a connecting hole at one end and a connecting post one at the other end. The connecting post one is rotatably connected to the tail of the pliers cup, and the connecting hole is rotatably connected to the push-pull rod. The double-column connecting piece has a connecting post two and a connecting post three at each end. The connecting post two is rotatably connected to the tail of another pliers cup, and the connecting post three is rotatably connected to the connecting hole.

[0017] Preferably, both the single-column connecting piece and the double-column connecting piece are formed by cold forging.

[0018] Preferably, the cup holder has a shaft hole, and a cup holder pin is provided in the shaft hole. The cup holder pin connects the two pliers cups to the shaft hole, and the pliers cups are interconnected with the shaft hole and the cup holder pin.

[0019] Preferably, a gasket is provided between the two pliers cups.

[0020] The beneficial effects of this utility model are:

[0021] (1) The connecting pieces, pliers cups and push-pull rods formed by cold forging can effectively reduce the production cost of the parts; at the same time, the connecting piece structure design with single and double columns can retain the structural complexity of powder metallurgy processing while avoiding the need for additional complex connection processes.

[0022] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a biopsy forceps connecting piece processed by cold forging according to the present invention;

[0024] Figure 2 This is a three-dimensional cross-sectional view of an embodiment of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of an embodiment of the present invention in a closed state;

[0026] Figure 4 This is a three-dimensional structural diagram of the pliers cup according to an embodiment of the present invention;

[0027] Figure 5 This is a three-dimensional structural schematic diagram of a single-column connecting piece and a double-column connecting piece according to an embodiment of this utility model;

[0028] In the diagram: 10, pliers cup; 20, single-column connecting piece; 30, double-column connecting piece; 40, push-pull rod; 50, cup holder; 60, washer; 70, cup holder pin. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0030] See Figures 1-5 This utility model embodiment provides a biopsy forceps connecting piece processed by cold forging, including a cup seat 50, one end of which is movably connected to two forceps cups 10. The cup seat 50 has an inner hole, through which a push-pull rod 40 passes and is connected to the cup seat 50; the end of the push-pull rod 40 facing the forceps cup 10 is movably connected to the forceps cup 10 and drives the forceps cup 10 to open and close.

[0031] The push-pull rod 40 drives the forceps cup 10 to open and close through the connecting piece assembly, completing operations such as tissue clamping and meeting the needs of biopsy;

[0032] The pliers cup 10 and the push-pull rod 40 are formed by cold forging, which ensures the accuracy of their shape and size, while improving production efficiency; the push-pull rod 40 is formed by stamping thin stainless steel sheet, rather than by tubing.

[0033] A connecting plate assembly is connected between the push-pull rod 40 and the pliers cup 10. The connecting plate assembly includes a single-column connecting plate 20 and a double-column connecting plate 30. One end of the single-column connecting plate 20 has a connecting hole, and the other end has a connecting column one. The connecting column one is rotatably connected to the tail of the pliers cup 10, and the connecting hole is rotatably connected to the push-pull rod 40. The double-column connecting plate 30 has a connecting column two and a connecting column three at its two ends, respectively. The connecting column two is rotatably connected to the tail of another pliers cup 10, and the connecting column three is rotatably connected to the connecting hole.

[0034] The connecting piece assembly is formed by cold forging, without involving other processing techniques. Compared with the traditional powder metallurgy process of forming-debinding-sintering, it greatly improves production efficiency and reduces production costs.

[0035] The design of the single-column connecting piece 20 and the double-column connecting piece 30 enables the push-pull rod 40 to smoothly drive the forceps cup 10 to open and close, realizing the operation function of the biopsy forceps.

[0036] The cup holder 50 has a shaft hole, and a cup holder pin 70 is provided in the shaft hole. The cup holder pin 70 connects the two pliers cups 10 to the shaft hole. A washer 60 is provided between the two pliers cups 10. The cup holder pin 70 ensures a stable connection between the pliers cups 10 and the cup holder 50, and at the same time allows the pliers cups 10 to rotate flexibly. The presence of the washer 60 reduces the friction between the pliers cups 10, making the opening and closing process smoother.

[0037] After assembly into a finished product, the forceps cup 10, the connecting piece, and the push-pull rod 40 form a linkage structure. When the push-pull rod 40 reciprocates along the axis of the cup seat 50, the connecting piece opens or closes at an angle, causing the forceps cup 10 to open and close, thus realizing the function of the forceps cup 10 in gripping tissue.

[0038] This patent innovates in parts processing technology. While the parts structure is largely consistent with traditional connecting rod structures, both the pliers cup 10 and the connecting piece are processed using stamping, significantly reducing production costs and improving efficiency. Especially the connecting piece; some combinations of stamped pliers cup 10 and stamped connecting pieces exist on the market, but these are mostly double-hole waist-shaped pieces, requiring T-pins and additional welding processes, making assembly complex. The connecting piece in this patent uses thick stainless steel for stamping, directly producing a columnar structure, achieving structural complexity previously only achievable with powder metallurgy, while greatly reducing production costs.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biopsy forceps connector manufactured using a cold forging process, characterized in that: Includes a cup holder (50), on one end of which two pliers cups (10) are movably connected. The cup holder (50) has an inner hole, in which a push-pull rod (40) is connected. The push-pull rod (40) passes through the inner hole and is connected to the cup holder (50). The end of the push-pull rod (40) facing the pliers cup (10) is movably connected to the pliers cup (10) and drives the pliers cup (10) to open and close. A connecting piece assembly is connected between the push-pull rod (40) and the pliers cup (10). The connecting piece assembly connects the tail of the pliers cup (10) and the end of the push-pull rod (40). The push-pull rod (40) drives the pliers cup (10) to open and close through the connecting piece assembly. The connecting piece assembly includes a single-column connecting piece (20) and a double-column connecting piece (30). The single-column connecting piece (20) has a connecting hole at one end and a connecting post one at the other end. The connecting post one is rotatably connected to the tail of the pliers cup (10), and the connecting hole is rotatably connected to the push-pull rod (40). The double-column connecting piece (30) has a connecting post two and a connecting post three at both ends. The connecting post two is rotatably connected to the tail of another pliers cup (10), and the connecting post three is rotatably connected to the connecting hole.

2. The biopsy forceps connector as described in claim 1, characterized in that: The pliers cup (10) and push-pull rod (40) are both formed by cold forging.

3. The biopsy forceps connector as described in claim 1, characterized in that: The connecting piece assembly is formed by cold forging.

4. The biopsy forceps connector as described in claim 1, characterized in that: Both the single-column connecting piece (20) and the double-column connecting piece (30) are formed by cold forging.

5. The biopsy forceps connector as described in claim 1, characterized in that: The cup holder (50) has a shaft hole, and a cup holder pin (70) is provided in the shaft hole. The cup holder pin (70) connects the two pliers cups (10) to the shaft hole. The pliers cups (10) are connected to the shaft hole and the cup holder pin (70).

6. The biopsy forceps connector as described in claim 1, characterized in that: A gasket (60) is provided between the two pliers cups (10).

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