CN220404045U - Hard biopsy forceps with bendable end - Google Patents

Abstract

The application relates to a hard biopsy forceps with bendable ends, which includes a forceps head, an elastic guide rod section and a hard guide rod section. The forceps head is connected to the first end of the hard guide rod section through the elastic guide rod section; it also includes The control mechanism controls the bending of the elastic guide rod section to realize the steering of the clamp head. The application has a simple structure, is easy to operate, can obtain a large amount of tissue, and improves the diagnostic and therapeutic performance of the flexible thoracoscope.

Description

A kind of hard biopsy forceps with flexible end

Technical field

The present application belongs to the technical field of biopsy forceps, and specifically relates to a hard biopsy forceps with flexible ends.

Background technique

Medical thoracoscopy includes two types: rigid thoracoscope and flexible thoracoscope. Among them, the disadvantage of the existing rigid medical thoracoscope is that there are many openings and two holes need to be drilled in the abdominal wall and chest wall, which causes great harm to the patient; moreover, the entire rigid medical thoracoscope has a rigid tubular structure, which extends into After the human lesion is located, the operation of adjusting the angle is complicated, which brings inconvenience to the operator. Moreover, the angle adjustment range is limited, and sometimes it is impossible to obtain tissue markers on the side walls of special locations such as the chest wall, resulting in a low success rate in obtaining pleural tissue. Existing flexible thoracoscopes can only use flexible biopsy forceps for pleural biopsy operations. The entire flexible biopsy forceps is soft. The flexible biopsy forceps extend from the side wall of the flexible thoracoscope, resulting in poor biopsy performance of the flexible thoracoscope. Low, the obtained tissue markers are small, which is not conducive to subsequent diagnosis.

Utility model content

In view of the above analysis, embodiments of the present invention aim to provide a hard biopsy forceps with bendable ends to solve one or more of the above problems existing in the prior art.

The purpose of this utility model is achieved in this way:

A hard biopsy forceps with bendable ends, including a forceps head, an elastic guide rod section and a hard guide rod section. The forceps head is connected to the first end of the hard guide rod section through the elastic guide rod section. The hard guide rod section The second end of the first control mechanism is connected to the first control mechanism and the second control mechanism. The first control mechanism is configured to control the opening and closing of the pliers head; the second control mechanism is configured to control the bending of the elastic guide rod section to realize the pliers. Turn of head.

Further, the second control mechanism includes a bending control wire. One end of the bending control wire is connected to the forceps seat of the forceps head, and the other end is located at the control end of the hard biopsy forceps. By driving the bending control wire, the bending of the elastic guide rod section is realized. Turn, thereby realizing the turning of the clamp head.

Further, the elastic guide rod section has a first length, the endoscope tube has a hose section at a corresponding position, the hose section has a second length, and the first length is greater than the second length.

Further, the first length is 1.5-2 times the second length.

Further, the elastic guide rod section and the hard guide rod section are of an integrated structure, and the elastic guide rod section is a spiral spring tube cut by a laser.

Further, the spiral spring tube has a pitch, and the pitch gradually decreases from the middle to both ends of the spiral spring tube.

Further, the plier head includes a pliers base, a first pliers piece and a second pliers piece. The pliers base is fixedly connected to the elastic guide rod section; the first pliers piece and the second pliers piece are openably and closably provided on the pliers base. The forceps and the second forceps are opened to form an accommodating space for accommodating tissue.

Further, a first row of teeth is provided on the first pliers, and a first end tooth is provided at the end of the first row of teeth; a second row of teeth is provided on the second pliers, and a second end tooth is provided at the end of the second row of teeth; The longitudinal sections of the first end tooth and the second end tooth are both triangular, the apex angle of the first end tooth has a first angular bisector, and the apex angle of the second end tooth has a second angular bisector; the first jaw and the second The angle between the jaws has a third angle bisector; when the first jaw and the second jaw are fully open, the angles between the first angle bisector, the second angle bisector and the third angle bisector are all α, 0 °≤α≤5°.

Further, a first accommodation space is provided in the middle of the first jaw, and the first row of teeth is arranged around the first accommodation space; a second accommodation space is arranged in the middle of the second jaw, and the second row of teeth is arranged around the second accommodation space; After the first forceps and the second forceps are engaged, the first row of teeth and the second row of teeth are seamlessly engaged, and the first accommodating space and the second accommodating space together constitute an accommodating space for accommodating tissue.

Further, at least one of the first jaw and the second jaw is provided with a drain hole, and the drain hole is connected to the accommodation space.

Compared with the existing technology, this utility model can achieve at least one of the following beneficial effects:

a) The utility model provides a hard biopsy forceps with bendable ends. The insertion portion of the forceps head of the hard biopsy forceps includes an elastic guide rod section and a hard guide rod section. The forceps head is realized by controlling the bending of the elastic guide rod section. The angle is adjusted to obtain a large tissue target, which improves the diagnostic and therapeutic performance of flexible thoracoscopy.

b) In the hard biopsy forceps with bendable ends provided by the utility model, when the first and second jaws of the forceps head are fully opened, the outermost teeth of at least one forceps can be rotated vertically or approximately vertically. Inserting into the organization from an angle can improve the efficiency and effectiveness of organization acquisition.

Description of the drawings

In order to more clearly explain the embodiments of this specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some of the embodiments described in the embodiments of this specification. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

Figure 1 is a schematic structural diagram of a hard biopsy forceps with bendable ends provided by the utility model;

Figure 2 is a partial structural schematic diagram of the hard biopsy forceps with bendable ends provided by the utility model;

Figure 3 is a schematic structural diagram of the forceps head of the hard biopsy forceps with bendable ends provided by the utility model;

Figure 4 is a schematic structural diagram of the straight channel bendable rigid thoracoscope kit provided by the utility model;

Figure 5 is a schematic diagram of the front end of the straight-channel bendable rigid thoracoscope kit provided by the present invention in a curved state.

Reference signs:

100-hard biopsy forceps; 101-forceps head; 1011-forceps seat; 1012-first forceps; 1012a-first teeth; 1013-second forceps; 1013a-second teeth; 102-elastic guide rod Section; 103-hard guide rod section; 104-bending control wire; 105-pull ring; 106-first control mechanism;

200-thoracoscope; 201-rigid tube section; 202-flexible tube section; 203-plug.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. It should be noted that, without conflict, the embodiments and features in the embodiments of the present disclosure can be combined, separated, interchanged and/or rearranged with each other. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially concurrently or in the reverse order of that described. In addition, the same reference numerals represent the same components.

When an element is referred to as being "on," "on," "connected to" or "coupled to" another element, it can be directly on, directly connected to, or directly connected to the other element. Either directly coupled to said other component, or intervening components may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

A specific embodiment of the present invention, as shown in Figures 1 to 5, discloses a straight-channel flexible rigid thoracoscope kit, which can be used for the diagnosis and treatment of pleural diseases, including flexible end biopsy forceps ( Referred to as hard biopsy forceps 100) and thoracoscope 200; the hard biopsy forceps 100 has a forceps head 101 and a plug-in part. The forceps head 101 is connected to the end of the plug-in part. The plug-in part includes a hard main body part and a plug-in part at the front end. The bendable part, the hard main part cannot be bent, and only a small section of the front end can be bent. Specifically, the plug-in part includes an elastic guide rod section 102 and a hard guide rod section 103. The elastic guide rod section 102 Together with the hard guide rod section 103, they form an insertion portion. The clamp head 101 is connected to the first end of the hard guide rod section 103 through the elastic guide rod section 102, and the second end of the hard guide rod section 103 is connected to the first control mechanism. 106 and a second control mechanism, the first control mechanism 106 is configured to control the opening and closing of the clamp head 101; the second control mechanism is configured to control the bending of the elastic guide rod section 102 to achieve the steering of the clamp head 101; The thoracoscope 200 has an endoscope tube, which has a hollow channel extending in the axial direction; the endoscope tube includes a hard tube section 201 and a flexible tube section 202, and the rear end of the flexible tube section 202 is connected to the front end of the hard tube section 201 ; Among them, the clamp head 101, the elastic guide rod section 102 and the hard guide rod section 103 are movably installed in the hollow channel, and the elastic guide rod section 102 at least partially overlaps with the hose section 202, and the hose section 202 can adjust with the elasticity. The guide rod sections 102 are bent synchronously.

During implementation, the forceps head 101 and the insertion part of the hard biopsy forceps 100 are installed into the endoscopic tube of the thoracoscope 200. The operator sends the forceps 101 into the designated position in the patient's body, and uses the second method according to the position to be treated. The control mechanism controls the bending of the elastic guide rod section 102 to bend the forceps head 101 toward the target position. During this process, the operator can rotate the hard biopsy forceps 100 and the thoracoscope 200 as a whole to accurately rotate the forceps head 201 to the target. position; after the forceps head is adjusted to the designated position, the forceps head 101 is closed using the first control mechanism to remove the tissue at the target position.

In this embodiment, the function of the second control mechanism is to control the bending of the elastic guide rod section 102, and any structure that can realize the bending of the elastic guide rod section 102 is acceptable. The second control mechanism of this embodiment includes but is not limited to the following structure: the second control mechanism includes a bending control wire 104, one end of the bending control wire is connected to the forceps seat of the forceps head 101, and the other end is located on the hard biopsy forceps 100. At the control end, the bending control wire 104 is driven to realize the bending of the elastic guide rod section 102, thereby realizing the steering of the clamp head 101. Optionally, the bending control wire 104 located at the control end of the hard biopsy forceps 100 is connected with a pull ring 105 to facilitate the operator to pull. Alternatively, the bending control wire 104 is wound around the rotating winding mechanism, and the bending control wire 104 is pulled and released by rotating counterclockwise or clockwise.

In this embodiment, the elastic guide rod section 102 and the hose section 202 both have a certain length. The elastic guide rod section 102 has a first length, and the hose section 202 has a second length. The specific lengths of the two are set according to actual needs. Optionally, the first length is greater than the second length, and the first length is 1.5-2 times the second length. It should be noted that during actual operation, the front end of the elastic guide rod section 102 may or may not extend out of the plug 203, as long as the clamp head 101 can extend out of the plug 203. FIG. 5 only shows the situation where the front end of the elastic guide rod section 102 extends out of the plug 203 .

In this embodiment, the elastic guide rod section 102 and the hard guide rod section 103 are an integrated structure and are made by laser cutting or 3D printing. Illustratively, the elastic guide rod section 102 is a spiral spring tube cut by a laser. During laser cutting, an elastic guide rod section 101 is cut from the front of a whole hard guide rod. One end of the elastic guide rod section 101 is a hard guide rod section 103, and a small hard guide rod section is left at the other end. It is convenient to connect with the clamp seat 1011 of the plier head; cut along the outer peripheral surface of the hard guide rod according to the thread line trajectory, and the structure of the obtained spiral spring tube is similar to that of the spring. In one of the optional embodiments, the spiral spring tube has a pitch, and the pitch gradually decreases from the middle to both ends of the spiral spring tube. The middle part of the spiral spring tube has a large pitch, which is more prone to elastic deformation, making the bending of the clamp head more flexible. At the same time, the pitch at both ends is small, making elastic deformation more difficult. This not only ensures that the clamp head can be smoothly inserted into the tissue. Movement, and when adjusting the orientation of the clamp head, the required control force is first smaller and then larger, so that the bending orientation of the clamp head can be more accurately controlled, preventing the clamp head orientation from being adjusted too flexibly and being unable to accurately align the required sampling position, which in turn leads to Acquisition efficiency is low.

In this embodiment, the pliers head 101 includes a pliers base 1011, a first pliers piece 1012 and a second pliers piece 1013. The pliers base 1011 is fixedly connected to the elastic guide rod section 102; the first pliers piece 1012 and the second pliers piece 1013 can be opened. The first jaw 1012 and the second jaw 1013 are opened to form an accommodating space for accommodating tissue.

In one embodiment, the first jaw 1012 is provided with a first row of teeth, and the end of the first row of teeth is provided with a first end tooth 1012a; the second jaw 1013 is provided with a second row of teeth, and the second row of teeth is A second end tooth 1013a is provided at the end; when the first jaw 1012 and the second jaw 1013 are fully opened, the outermost tooth of at least one jaw can be inserted into the tissue at a vertical or approximately vertical angle, and can lift Organizations gain efficiency and effectiveness.

Exemplarily, the longitudinal sections of the first end tooth 1012a and the second end tooth 1013a are both triangular, the vertex angle of the first end tooth 1012a has a first angular bisector, and the vertex angle of the second end tooth 1013a has a second angular bisector. line; the angle between the first jaw 1012 and the second jaw 1013 has a third angular bisector; when the first jaw 1012 and the second jaw 1013 are fully open, the first angular bisector and the second angular bisector The angles with the third angle bisector are all α, 0°≤α≤5°. This structure is set up so that when the first pliers 1012 and the second pliers 1013 are fully opened, the outermost end tooth 1012a of the first row of teeth and the outermost second end tooth 1013a of the second row of teeth can be vertical or approximately Insert the tissue at a vertical angle to improve tissue acquisition efficiency and effectiveness.

Further, the first row of teeth on the first jaw 1012 and the second row of teeth on the second jaw 1013 are evenly arranged in a U-shape or annular shape; a concave first receiving space is provided in the middle of the first jaw 1012. The first row of teeth is arranged around the first accommodation space; a concave second accommodation space is provided in the middle of the second jaw 1013, and the second row of teeth is arranged around the second accommodation space; the first jaw 1012 and the second jaw 1013 are engaged Finally, all or part of the teeth of the first row of teeth and the second row of teeth mesh seamlessly, and the first accommodating space and the second accommodating space together constitute an accommodating space for accommodating tissue. It can cut the tissue thoroughly to prevent tissue tearing and secondary injury during the removal process.

Furthermore, at least one of the first jaw 1012 and the second jaw 1013 is provided with a drainage hole, and the drainage hole is connected with the accommodation space. That is to say, the first jaw is provided with a first drainage hole, and the first jaw is provided with a first drainage hole. A drainage hole is connected to the first accommodation space; and/or a second drainage hole is provided on the second forceps piece, and the second drainage hole is connected to the second accommodation space. This structure can drain the blood and water in the clamped tissue, Clamp more tissue and improve clamping efficiency.

In this embodiment, a plug 203 is provided at the front end of the hose section 202, and a camera and a light source lamp are provided at the front end of the plug 203. The camera and light source lamp are embedded in the bottom end surface of the plug 203.

Compared with the existing technology, the hard biopsy forceps with bendable ends provided by this embodiment can achieve at least one of the following beneficial effects:

1. The plug-in part of the forceps head of the hard biopsy forceps includes an elastic guide rod segment and a hard guide rod segment. By controlling the bending of the elastic guide rod segment, the angle of the forceps head can be adjusted conveniently and quickly, and the tissue target block can be obtained The size is large, which improves the success rate of obtaining pleural tissue and improves the diagnostic and therapeutic performance of flexible thoracoscopy.

2. When the first and second jaws of the forceps head are fully opened, the outermost tooth of at least one jaw can be inserted into the tissue at a vertical or nearly vertical angle, which can improve the efficiency and effect of tissue acquisition.

The above-mentioned specific embodiments further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above-mentioned are only specific embodiments of the present application and are not intended to limit the scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims (8)

1. A hard biopsy forceps with bendable ends, characterized in that it includes a forceps head, an elastic guide rod section and a hard guide rod section, the forceps head is connected to the hard guide rod section through an elastic guide rod section The first end of the hard guide rod section is connected to a first control mechanism and a second control mechanism, and the first control mechanism is configured to control the opening and closing of the clamp head; the third control mechanism Two control mechanisms are configured to control the bending of the elastic guide rod section to achieve the steering of the clamp head; The pliers head includes a pliers base, a first pliers piece and a second pliers piece. The pliers base is fixedly connected to the elastic guide rod section; the first pliers piece and the second pliers piece can be opened and closed on the pliers. On the seat, the first jaw and the second jaw are opened to form an accommodation space for accommodating tissue; The first row of teeth is provided with a first row of teeth, and the end of the first row of teeth is provided with a first end tooth; the second row of teeth is provided with a second row of teeth, and the end of the second row of teeth is provided with a third end tooth. Two terminal teeth; The longitudinal sections of the first end tooth and the second end tooth are both triangular, the apex angle of the first end tooth has a first angular bisector, and the apex angle of the second end tooth has a second angular bisector; The angle between the first jaw and the second jaw has a third angle bisector; When the first jaw and the second jaw are fully open, the angles between the first angle bisector, the second angle bisector and the third angle bisector are all α, 0°≤α≤5°. 2. The hard biopsy forceps with flexible ends according to claim 1, characterized in that the second control mechanism includes a bending control wire, one end of the bending control wire is connected to the forceps base of the forceps head , the other end is located at the control end of the hard biopsy forceps, and the bending control wire is driven to realize the bending of the elastic guide rod section, thereby realizing the steering of the forceps head. 3. The hard biopsy forceps with flexible ends according to claim 2, wherein the elastic guide rod section has a first length, the endoscope tube has a hose section at a corresponding position, and the hose section has a third length. Two lengths, the first length being greater than the second length. 4. The rigid biopsy forceps with flexible ends according to claim 3, wherein the first length is 1.5-2 times the second length. 5. The hard biopsy forceps with bendable ends according to any one of claims 1 to 4, characterized in that the elastic guide rod section and the hard guide rod section are an integrated structure, and the elastic guide rod section is Laser cut spiral spring tube. 6. The hard biopsy forceps with flexible ends according to claim 5, characterized in that the spiral spring tube has a pitch, and the pitch gradually decreases from the middle to both ends of the spiral spring tube. 7. The hard biopsy forceps with flexible ends according to claim 1, wherein a first accommodation space is provided in the middle of the first forceps piece, and the first row of teeth is arranged around the first accommodation space; the first row of teeth is arranged around the first accommodation space; A second accommodation space is provided in the middle of the two jaws, and the second row of teeth is arranged around the second accommodation space; After the first jaw and the second jaw are engaged, the first row of teeth and the second row of teeth engage seamlessly, and the first accommodating space and the second accommodating space together form an accommodating space for accommodating tissue. 8. The hard biopsy forceps with flexible ends according to claim 7, wherein at least one of the first forceps and the second forceps is provided with a drainage hole, and the drainage hole The hole communicates with the accommodation space.