CN215079007U

CN215079007U - Bendable biopsy forceps

Info

Publication number: CN215079007U
Application number: CN202120529704.3U
Authority: CN
Inventors: 胡颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-12-10
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses a bendable biopsy forceps, which comprises a forceps head, a hose, a control handle for controlling the opening and closing of the forceps head, a front external thread pipe and a rear external thread pipe which are sequentially sleeved on the control handle along the axial direction and can slide back and forth along the control handle but can not rotate around the control handle, and an internal thread pipe which is simultaneously in threaded fit with the front external thread pipe and the rear external thread pipe; the front ends of the 2 traction wires are connected with the rear end of the tong head, the rear ends of the 2 traction wires are respectively connected with the front outer threaded pipe and the rear outer threaded pipe, when the inner threaded pipe is rotated, the front outer threaded pipe and the rear outer threaded pipe move in the opposite direction or in the opposite direction along the control hand, and the traction wires are pulled to bend one sides of the traction wires, which enable the front ends of the tong head and the hose to move backwards. Has the advantages of simple structure and convenient use.

Description

Bendable biopsy forceps

Technical Field

The utility model belongs to the technical field of medical instrument, specifically be a bendable biopsy forceps.

Background

The gastrointestinal endoscopy of the digestive tract is named as upper and lower gastrointestinal endoscopy, which uses gastroscope or enteroscope to enter the endoscope through oral cavity or anus, and doctors clearly observe the health condition of each part in the digestive tract from a display. If suspicious lesion and HP infection are found, a biopsy forceps can be inserted into a forceps hole of a gastroscope or an enteroscope to perform tissue biopsy, the tissue biopsy is a routine operation examination in the digestive endoscopy, the conventional biopsy forceps are soft and are matched with an endoscope, the biopsy forceps are inserted into the forceps hole of the endoscope, the direction of the biopsy forceps is consistent with that of the endoscope after the biopsy forceps are taken out of the forceps channel, and the biopsy forceps are opened and closed to perform sampling under the monitoring of the endoscope. Clinical confusion is that some suspicious lesions are not in the straight view angle of the endoscope, and may be in the deviated angle of 6 o ' clock, 3 o ' clock, 12 o ' clock, etc., and the endoscope cannot be turned to a proper angle due to the parts such as esophagus, the posterior side of cardia, etc., and effective angle sampling of the lesions becomes difficult.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a bendable biopsy forceps which is mainly matched with a soft endoscope for use and can bend the front end part of the biopsy forceps as required.

In order to realize the purpose, the utility model discloses a technical scheme is: a bendable biopsy forceps comprises a forceps head, a hose, a control handle, a front external threaded pipe, a rear external threaded pipe and an internal threaded pipe, wherein the forceps head, the hose and the control handle are sequentially connected from front to back, the control handle is used for controlling the opening and closing of the forceps head, the front external threaded pipe and the rear external threaded pipe are sequentially sleeved on the control handle in the axial direction, can slide back and forth along the control handle and cannot rotate around the control handle, and the internal threaded pipe is in threaded fit with the front external threaded pipe and the rear external threaded pipe; the wire drawing device is characterized by further comprising 2 wire drawing wires which are oppositely arranged, wherein the front ends of the 2 wire drawing wires are connected with the rear end of the tong head, the rear ends of the 2 wire drawing wires are respectively connected with the front outer threaded pipe and the rear outer threaded pipe, when the inner threaded pipe is rotated, the front outer threaded pipe and the rear outer threaded pipe move in the opposite direction or in the opposite direction along the control hand, and the wire drawing wires are drawn to enable the tong head to bend towards one side of the backward moving wire drawing wires.

The thread setting mode of preceding external screw thread pipe and back external screw thread pipe is further given, the screw thread direction of rotation of preceding external screw thread pipe is opposite with the screw thread direction of rotation of back external screw thread pipe, just the anterior and the rear portion of the internal surface of internal thread pipe are equipped with respectively with preceding external screw thread pipe and the internal thread of back external screw thread pipe screw-thread fit.

Further, the rear part of the inner side of the internal thread pipe is provided with a rear limiting part which is used for preventing the rear external thread pipe from being separated from the control of the internal thread pipe when sliding backwards; and/or the front part of the inner side of the internal thread pipe is provided with a front limit part for preventing the front external thread pipe from being separated from the control of the internal thread pipe when sliding forwards.

Further, rotation stopping mechanisms are arranged between the front external threaded pipe and the control handle and used for preventing the front external threaded pipe and the rear external threaded pipe from rotating around the control handle. Furthermore, the control handle is provided with a guide groove along the axial direction of the control handle, the inner side of the front outer threaded pipe and the inner side of the outer threaded pipe are respectively provided with a sliding block which is matched with the guide groove in a guiding way, and the sliding block and the guide groove jointly form the rotation stopping mechanism.

The bendable biopsy forceps further comprise a pull rope penetrating through the hose and capable of moving back and forth along the axial direction of the hose, the front end of the pull rope is connected with the forceps head, the rear end of the pull rope is connected with a control handle, and the pull rope and the control handle jointly form a control assembly used for controlling the opening and closing of the forceps head.

The control handle comprises a core rod and a sliding ring sleeved on the core rod and capable of sliding back and forth along the core rod, the inhaul cable is connected with the sliding ring, the hose is connected with the front end of the core rod, and the front outer threaded pipe and the rear outer threaded pipe are sleeved on the core rod.

Furthermore, the drawing wires are metal wires which are woven in a crossed mode.

In order to ensure that the binding clip can deflect towards two sides, further, when the hose is straight, the front external thread pipe and the rear external thread pipe are spaced apart, so that no matter the internal thread pipe is rotated clockwise or anticlockwise, one of the front external thread pipe and the rear external thread pipe always moves backwards, and further the bidirectional lateral bending adjustment of the binding clip is ensured.

Compared with the prior art, the utility model discloses the technological effect who gains does: the utility model provides a biopsy forceps that can bend, 2 relative settings and the wire drawing that leads that are connected with the binding clip combine the screw thread on the brake valve lever to preceding opposite, back external screw thread pipe and simultaneously with preceding, back external screw thread pipe screw-thread fit's internal thread pipe, when realizing around the rotatory internal thread pipe of brake valve lever, before driving, back external screw thread pipe or back-to-back motion, and then preceding external screw thread pipe or back external screw thread pipe of backward motion are to the back traction wire drawing and then make the binding clip deflect to this wire drawing one side, realize the adjustment of biopsy forceps bend angle degree and the direction of bending, and has simple structure, convenient to use's characteristics.

Drawings

Fig. 1 is a schematic structural diagram of a bendable biopsy forceps according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

FIG. 3 is a schematic view of a bendable biopsy forceps in an embodiment of the present invention in a side-bent state

The reference numbers in the figures are: 1. the novel hydraulic wrench comprises a wrench head, 2 parts of a hose, 3 parts of a control handle, 4 parts of a front external thread pipe, 5 parts of a rear external thread pipe, 6 parts of an internal thread pipe, 7 parts of a traction wire, 8 parts of a pull rope, 9 parts of a core rod, 10 parts of a sliding ring, 11 parts of a front limiting part, 12 parts of a rear limiting part, 13 parts of a guide groove and 14 parts of a sliding block.

Detailed Description

The utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The specific embodiment of the utility model is shown in fig. 1 to 3, a bendable biopsy forceps, which comprises a forceps head 1, a hose 2, a control handle 3 for controlling the opening and closing of the forceps head 1, a front external thread tube 4 and a rear external thread tube 5 which are sequentially sleeved on the control handle 3 along the axial direction and can slide along the control handle 3 from front to back but can not rotate around the control handle 3, and an internal thread tube 6 which is simultaneously in threaded fit with the front external thread tube 4 and the rear external thread tube 5; the pliers are characterized by further comprising 2 oppositely arranged pulling wires 7, the front ends of the 2 pulling wires 7 are connected with the rear end of the pliers head 1, the rear ends of the 2 pulling wires 7 are respectively connected with the front outer threaded pipe 4 and the rear outer threaded pipe 5, when the inner threaded pipe 6 is rotated, the front outer threaded pipe 4 and the rear outer threaded pipe 5 move in the opposite direction or in the opposite direction along a control hand, and the pulling wires 7 are pulled to enable the pliers head 1 to bend towards one side of the pulling wires 7 moving backwards. The hose 2 may be a spring tube or a polymer injection molded tube suitable for use in the medical and health fields, or may be a braided hose 2 formed by braiding a metal wire or a polymer material.

The thread setting mode of preceding external screw thread pipe 4 and back external screw thread pipe 5 does, and the screw thread direction of screwing of preceding external screw thread pipe 4 is opposite with the screw thread direction of screwing of back external screw thread pipe 5, just the anterior and the rear portion of the internal surface of internal thread pipe 6 are equipped with respectively with preceding external screw thread pipe 4 and the internal thread of back external screw thread pipe 5 screw-thread fit.

The rear part of the inside of the internally threaded tube 6 is provided with a rear stopper 12 for preventing the rear externally threaded tube 5 from coming out of the control of the internally threaded tube 6 when sliding backward. The front part of the inside of the internally threaded tube 6 is provided with a front stopper 11 for preventing the front externally threaded tube 4 from coming off the control of the internally threaded tube 6 when sliding forward. As for the stopper, this embodiment is embodied as a stopper provided at both ends of the inside of the female screw pipe 6.

Rotation stopping mechanisms are arranged between the front external thread pipe 4 and the control handle 3 and used for preventing the front external thread pipe 4 and the rear external thread pipe 5 from rotating around the control handle 3. Specifically, a guide groove 13 is formed in the control handle 3 along the axial direction of the control handle 3, slide blocks 14 which are in guide fit with the guide groove 13 are respectively arranged on the inner side of the front outer threaded pipe 4 and the inner side of the outer threaded pipe, and the slide blocks 14 and the guide groove 13 jointly form the rotation stopping mechanism.

The embodiment provides a mechanism for controlling the opening and closing of the forceps head 1, the bendable biopsy forceps further comprise a pull cable 8 which can move back and forth along the axial direction of the hose 2 and penetrate through the hose 2, the front end of the pull cable 8 is connected with the forceps head 1, the rear end of the pull cable 8 is connected with the control handle 3, and the pull cable 8 and the control handle 3 jointly form a control assembly for controlling the opening and closing of the forceps head 1. The mechanism for controlling the opening and closing of the jaw 1 is also applicable to conventional opening and closing mechanisms such as biopsy forceps, sampling forceps, and hemostatic forceps, which are commonly used in the art. As for the specific structure of the binding clip 1 and the connection mode with the pull cable 8, the arrangement modes of biopsy forceps, sampling forceps, hemostats and the like in the prior art can be adopted.

As the control handle 3, a control handle 3 suitable for a sampling forceps, a hemostatic clamp, a biopsy forceps, a snare, etc. in the prior art can be used, and the control hand of the present embodiment further includes a core bar 9 and a slide ring 10 slidably fitted over the core bar 9 back and forth, a pull string 8 is connected to the slide ring 10, the flexible tube 2 is connected to the front end of the core bar 9, and the front outer threaded tube 4 and the rear outer threaded tube 5 are fitted over the core bar 9.

The traction wire 7 is a metal wire knitted in two sections, the front section is a cross knitting, and the rear section is a thread structure knitted in a straight line

The bendable biopsy forceps of the embodiment are characterized in that 2 oppositely arranged pulling wires 7 connected with the forceps head 1 are combined with the front and rear outer threaded pipes 5 with opposite thread turning directions on the control handle 3 and the inner threaded pipe 6 in thread fit with the front and rear outer threaded pipes 5, so that when the inner threaded pipe 6 is rotated around the control handle 3, the front and rear outer threaded pipes 5 are driven to move in opposite directions or back to back, and then the front outer threaded pipe 4 or the rear outer threaded pipe 5 moving backwards pulls the pulling wires 7 backwards so that the forceps head 1 deflects towards one side of the pulling wires 7, so that the bending angle and the bending direction of the biopsy forceps are adjusted. When the adjustable biopsy forceps are used, the bendable biopsy forceps are firstly conveyed to a focus of a human body through the endoscope, then the bending direction and angle of the biopsy forceps are adjusted according to needs, and after the adjustment is completed, the sliding ring 10 is pushed forwards and backwards to control the forceps head 1 to be opened and closed, so that the sampling action is completed.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. A bendable biopsy forceps is characterized in that: the clamp comprises a clamp head (1), a hose (2), a control handle (3) for controlling the clamp head (1) to open and close, a front external threaded pipe (4) and a rear external threaded pipe (5) which are sequentially sleeved on the control handle (3) along the axial direction and can slide back and forth along the control handle (3) but cannot rotate around the control handle (3), and an internal threaded pipe (6) which is simultaneously in threaded fit with the front external threaded pipe (4) and the rear external threaded pipe (5); the front ends of the 2 traction wires (7) are connected with the rear end of the tong head (1), the rear ends of the 2 traction wires (7) are respectively connected with the front outer threaded pipe (4) and the rear outer threaded pipe (5), when the inner threaded pipe (6) is rotated, the front outer threaded pipe (4) and the rear outer threaded pipe (5) move in the opposite direction or in the opposite direction along a control hand, and the traction wires (7) are pulled to bend one sides of the traction wires (7) moving backwards at the front ends of the tong head (1) and the hose (2).

2. The bendable biopsy forceps of claim 1, wherein: the screw thread direction of the front external screw thread pipe (4) is opposite to the screw thread direction of the rear external screw thread pipe (5), and the front part and the rear part of the inner surface of the internal screw thread pipe (6) are respectively provided with an internal thread matched with the screw threads of the front external screw thread pipe (4) and the rear external screw thread pipe (5).

3. The bendable biopsy forceps of claim 1, wherein: when the hose (2) is straight, a distance is arranged between the front external thread pipe (4) and the rear external thread pipe (5).

4. The bendable biopsy forceps of claim 1, wherein: the rear part of the inner side of the internal thread pipe (6) is provided with a rear limiting part (12), and/or the front part of the inner side of the internal thread pipe (6) is provided with a front limiting part (11).

5. The bendable biopsy forceps of claim 1, wherein: and rotation stopping mechanisms are arranged between the front external thread pipe (4) and the control handle (3) and used for preventing the front external thread pipe (4) and the rear external thread pipe (5) from rotating around the control handle (3).

6. The bendable biopsy forceps of claim 5, wherein: the control handle (3) is provided with a guide groove (13) along the axial direction of the control handle (3), the inner side of the front outer threaded pipe (4) and the inner side of the outer threaded pipe are respectively provided with a sliding block (14) which is in guide fit with the guide groove (13), and the sliding block (14) and the guide groove (13) jointly form the rotation stopping mechanism.

7. The bendable biopsy forceps of claim 1, wherein: the novel pliers are characterized by further comprising a stay cable (8) capable of moving back and forth along the axial direction of the hose (2) and penetrating through the hose (2), wherein the front end of the stay cable (8) is connected with the pliers head (1), the rear end of the stay cable (8) is connected with the control handle (3), and the stay cable (8) and the control handle (3) jointly form a control assembly for controlling the pliers head (1) to be opened and closed.

8. The bendable biopsy forceps of claim 7, wherein: the control handle (3) comprises a core rod (9) and a sliding ring (10) which is sleeved on the core rod (9) and can slide back and forth along the core rod (9), the inhaul cable (8) is connected with the sliding ring (10), the hose (2) is connected with the front end of the core rod (9), and the front outer threaded pipe (4) and the rear outer threaded pipe (5) are sleeved on the core rod (9).

9. The bendable biopsy forceps of claim 1, wherein: the drawing wires (7) are metal wires which are woven in a crossed mode.