CN215018059U - Biopsy forceps and medical equipment - Google Patents

Abstract

The embodiment of the utility model provides a biopsy forceps and medical equipment relates to the medical instrument field, this biopsy forceps includes snake bone steering member, holder, handle, pull the piece and rotate the piece, snake bone steering member's one end is connected with the holder, snake bone steering member's the other end and handle are connected, pull the one end of piece and be connected with snake bone steering member, pull the other end of piece and rotate and be connected, it rotationally connects in the handle to rotate the piece to drive snake bone steering member through pulling and crooked towards the equidirectional not. The medical device comprises the biopsy forceps. The biopsy forceps and the medical device can enable the clamping piece to reach the lesion position more accurately.

Description

Biopsy forceps and medical equipment

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a biopsy forceps and medical equipment.

Background

Biopsy forceps are indispensable tools for collecting pathological specimens in endoscopy, and are generally used for collecting living tissue samples in human body cavities such as digestive tracts, respiratory tracts and the like. The traditional biopsy forceps need to be matched with devices such as a digestive endoscope and a bronchoscope for use, but the traditional biopsy forceps cannot flexibly turn, cannot accurately reach the position of a focus, and cannot easily and accurately acquire a sample at the position of the focus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a biopsy forceps and medical equipment, it can improve aforementioned technical problem effectively.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a biopsy forceps, turn to piece, holder, handle, pull the piece and rotate the piece including the snake bone, the snake bone turn to the one end of piece with the holder is connected, the snake bone turn to the other end of piece with the handle is connected, pull the one end of piece with the snake bone turns to the piece and connects, pull the other end of piece with it connects to rotate the piece, rotate the piece rotationally connect in the handle, in order to pass through it drives to pull the snake bone turns to the piece and crooked towards the equidirectional.

In an optional embodiment, the traction member includes a first pull wire and a second pull wire, the snake bone steering member is provided with a first side wall and a second side wall which are opposite to each other, one end of the first pull wire is connected with the first side wall, the other end of the first pull wire is connected with the rotating member, one end of the second pull wire is connected with the second side wall, and the other end of the second pull wire is connected with the rotating member, wherein a direction in which the first pull wire is used for driving the snake bone steering member to bend is opposite to a direction in which the second pull wire is used for driving the snake bone steering member to bend.

In an alternative embodiment, the first wire and the second wire are wound around the rotation member, the winding direction of the first wire is opposite to the winding direction of the second wire, the rotation member is configured to pull one of the first wire and the second wire when rotating in a preset direction, and the rotation member is configured to pull the other of the first wire and the second wire when rotating in a direction opposite to the preset direction.

In an optional embodiment, the rotating member is rotatably connected to the handle around a preset axis, the rotating member is provided with a first through hole and a second through hole, the first through hole and the second through hole are arranged side by side along an axial direction of the preset axis, the first pulling wire passes through the first through hole and is wound on the rotating member, the second pulling wire passes through the second through hole and is wound on the rotating member, and a direction in which the first pulling wire passes through the first through hole is opposite to a direction in which the second pulling wire passes through the second through hole.

In an alternative embodiment, the snake bone turning piece is provided with an inner cavity, the first side wall is provided with a plurality of first connecting holes communicated with the inner cavity, the plurality of first connecting holes are arranged at intervals along the axial direction of the snake bone turning piece, and the first stay wire simultaneously penetrates through the inner cavity and the plurality of first connecting holes to be bound on the first side wall.

In an optional embodiment, the snake bone turning piece is provided with an inner cavity, the second side wall is provided with a plurality of second connecting holes communicated with the inner cavity, the plurality of second connecting holes are arranged at intervals along the axial direction of the snake bone turning piece, and the second pull wire simultaneously penetrates through the inner cavity and the plurality of second connecting holes to be bound on the second side wall.

In an optional embodiment, the biopsy forceps further comprise a rotating disc, and the rotating disc is sleeved on the rotating member.

In an alternative embodiment, the periphery of the rotating disc is convexly provided with a tooth-shaped structure.

In an alternative embodiment, the biopsy forceps further comprise a magnetic navigation line, wherein a part of the magnetic navigation line is arranged in the snake bone steering member and the handle in a penetrating mode, and another part of the magnetic navigation line is used for being connected with a magnetic navigation device.

In a second aspect, the present invention provides a medical device comprising a biopsy forceps according to any of the preceding embodiments.

The utility model discloses beneficial effect includes, for example:

the embodiment of the utility model provides a biopsy forceps, this biopsy forceps include snake bone steering member, holder, handle, pull the piece and rotate the piece, and after the holder stretched into the human body, staff operating handle can control the holder clamp and get human tissue. One end of the snake bone steering piece is connected with the clamping piece, the other end of the snake bone steering piece is connected with the handle, one end of the traction piece is connected with the snake bone steering piece, the other end of the traction piece is connected with the rotating piece, and the rotating piece is rotatably connected with the handle. Under the action of external force, the rotating part rotates, and the rotating part can drive the snake bone steering part to bend towards different directions through the traction part in the rotating process. Like this, the holder stretches into human back, rotates and rotates the piece and can adjust the snake bone and turn to the piece and crooked towards different directions, and the holder follows the snake bone and turns to the piece and remove towards different directions, can make the holder reach the focus position more accurately, gathers the sample on the focus position more accurately. The clamping piece can rotate flexibly, and is convenient to take out from a human body subsequently.

The embodiment of the utility model provides a medical equipment is still provided, and this medical equipment includes aforementioned biopsy forceps to possess whole functions of this biopsy forceps. The medical equipment can also enable the clamping piece to reach the focus position more accurately.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a biopsy forceps provided in an embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic structural diagram of a biopsy forceps provided in an embodiment of the present invention at a second viewing angle;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a schematic structural view of a snake bone steering component provided by an embodiment of the present invention;

FIG. 5 is an enlarged schematic view at B of FIG. 1;

FIG. 6 is an enlarged schematic view at C of FIG. 1;

fig. 7 is an enlarged schematic view of fig. 1 at D.

Icon: 1-biopsy forceps; 11-snake bone steering member; 111-a first side wall; 1111-a first connection hole; 112-a second side wall; 1121 — second connection hole; 113-a movable member; 114-a lumen; 12-a clamp; 121-a transmission rod; 122-a clip; 13-a handle; 14-a traction member; 141-a first pull line; 142-a second pull line; 15-a rotating member; 151-first via; 152-a second via; 16-magnetically guided path; 17-a spring tube; 18-a turntable; 19-a toothed structure; 20-a slide block; 21-a connector; 3-preset axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art.

Referring to fig. 1-3, the present embodiment provides a biopsy forceps 1, the biopsy forceps 1 includes a snake bone turning member 11, a holding member 12, a handle 13, a pulling member 14 and a rotating member 15, the holding member 12 can be extended into the body to collect the tissue at the lesion position of the body. In the present embodiment, one end of the snake bone steering member 11 is connected to the holding member 12, and the other end of the snake bone steering member 11 is connected to the handle 13, it can be understood that when the snake bone steering member 11 bends in different directions, the holding member 12 follows the movement of the snake bone steering member 11 in different directions.

Specifically, in the present embodiment, one end of the pulling member 14 is connected to the snake bone turning member 11, the other end of the pulling member 14 is connected to the rotating member 15, and the rotating member 15 is rotatably connected to the handle 13. Under the action of external force, the rotating piece 15 rotates, and the snake bone steering piece 11 can be driven by the traction piece 14 to bend towards different directions during the rotation of the rotating piece 15. Like this, holder 12 stretches into human back, rotates and rotates a piece 15 and can adjust snake bone steering member 11 and crooked towards different directions, and holder 12 follows snake bone steering member 11 and moves towards different directions, can make holder 12 arrive the focus position more accurately, gathers the sample of focus position department more accurately.

It should be noted that, alternatively, the snake bone steering member 11 and the clamping member 12 may be connected together by welding, bonding, or the like.

Referring to fig. 1, in the present embodiment, the biopsy forceps 1 further includes a magnetic navigation line 16, wherein a part of the magnetic navigation line 16 is disposed through the snake steering member 11 and the handle 13, and another part of the magnetic navigation line 16 is used for connecting with a magnetic navigation device.

Therefore, the worker can determine the position of the magnetic navigation line 16 through the magnetic navigation equipment, so that the positions of the snake bone steering part 11 and the clamping part 12 can be determined, the position of the clamping part 12 can be checked in real time, and the clamping part 12 can be conveniently and accurately operated to reach the focus position.

Referring to fig. 1 and 2, in the present embodiment, the biopsy forceps 1 further includes a spring tube 17, the spring tube 17 is disposed between the snake bone turning member 11 and the handle 13, one end of the spring tube 17 is connected to the snake bone turning member 11, and the other end of the spring tube 17 is connected to the handle 13. The spring tube 17 can be bent to a certain degree, and can adapt to the pipelines extending along different directions in the organs after entering the organ pipelines of the human body. In addition, the spring tube 17 has a certain supporting function, and can play a certain protection role for internal components.

In this embodiment, the pulling member 14 passes through the spring tube 17, one end of the pulling member 14 extends to the snake 11 and the other end of the pulling member 14 extends to the rotating member 15.

In the present embodiment, the aforementioned magnetic navigation line 16 also passes through the spring tube 17, and the spring tube 17 protects the magnetic navigation line 16, and under the action of external force, the magnetic navigation line 16 and the spring tube 17 move synchronously.

Referring to fig. 3 and 4, in the present embodiment, the traction element 14 includes a first pulling wire 141 and a second pulling wire 142, the snake bone steering element 11 is provided with a first side wall 111 and a second side wall 112 opposite to each other, one end of the first pulling wire 141 is connected to the first side wall 111, the other end of the first pulling wire 141 is connected to the rotating element 15, one end of the second pulling wire 142 is connected to the second side wall 112, and the other end of the second pulling wire 142 is connected to the rotating element 15.

It can be understood that, under the action of an external force, when the first pulling wire 141 is pulled, the first pulling wire 141 can pull the first sidewall 111, the first sidewall 111 is concave, and the snake bone turning member 11 bends to drive the holding member 12 to move in the direction opposite to the concave direction of the first sidewall 111. When the second pulling wire 142 is pulled, the second pulling wire 142 can pull the second sidewall 112, the second sidewall 112 is recessed, and the snake bone turning member 11 bends to drive the holding member 12 to move in a direction opposite to the recessed direction of the second sidewall 112.

Since the first sidewall 111 and the second sidewall 112 are disposed opposite to each other, the direction in which the first pulling wire 141 bends the snake bone turning member 11 is opposite to the direction in which the second pulling wire 142 bends the snake bone. Referring to fig. 2, the direction indicated by the arrow E in fig. 2 can be understood as the direction in which the first wire 141 bends the snake diverting member 11. The direction indicated by the arrow F in fig. 2 can be understood as the direction in which the second wire 142 bends the snake diverting member 11.

In practical use, the worker pulls the first pull wire 141 or the second pull wire 142 according to the specific position of the lesion, so that the clamping member 12 can be controlled to move towards different directions, the clamping member 12 can reach the position of the lesion more accurately, and the subsequent sample collection operation is completed.

Referring to fig. 3, in the present embodiment, the first pulling wire 141 and the second pulling wire 142 are wound on the rotating member 15, and the winding direction of the first pulling wire 141 is opposite to the winding direction of the second pulling wire 142. Generally, the rotation member 15 serves to pull one of the first and second wires 141 and 142 in case of rotating in a preset direction, and the rotation member 15 serves to pull the other of the first and second wires 141 and 142 in case of rotating in a direction opposite to the preset direction.

It should be noted that, in the present embodiment, the aforementioned "the winding direction of the first wire 141 is opposite to the winding direction of the second wire 142" can be understood that in the state shown in fig. 1, in the case where the first wire 141 is wound on the rotation member 15 in the clockwise direction, the second wire 142 is wound on the rotation member 15 in the counterclockwise direction. Alternatively, in the case where the first wire 141 is wound around the rotation member 15 in the counterclockwise direction, the second wire 142 is wound around the rotation member 15 in the clockwise direction.

It should be noted that the aforementioned "preset direction" can be understood as a clockwise direction or a counterclockwise direction. In the case where the preset direction is the clockwise direction, the direction opposite to the preset direction is the counterclockwise direction. In the case where the preset direction is the counterclockwise direction, the direction opposite to the preset direction is the clockwise direction.

Taking the case where the first wire 141 is wound around the rotation member 15 in the clockwise direction and the second wire 142 is wound around the rotation member 15 in the counterclockwise direction as an example, if the rotation member 15 is rotated in the clockwise direction, the first wire 141 is pulled and the second wire 142 is released, so that the snake bone turning member 11 can be driven by the first wire 141 to bend in the direction opposite to the direction of the recess of the first sidewall 111. If the rotation member 15 is rotated in the counterclockwise direction, the second pulling wire 142 is pulled to release the first pulling wire 141, so that the snake bone rotation member 15 can be driven by the second pulling wire 142 to bend in the direction opposite to the concave direction of the second side wall 112.

Referring to fig. 3, in the present embodiment, the rotating member 15 is rotatably connected to the handle 13 around the predetermined axis 3, the rotating member 15 is provided with a first through hole 151 and a second through hole 152, the first through hole 151 and the second through hole 152 are arranged side by side along the axial direction of the predetermined axis 3, the first pulling wire 141 passes through the first through hole 151 and is wound on the rotating member 15, and the second pulling wire 142 passes through the second through hole 152 and is wound on the rotating member 15.

It can be appreciated that the first wire 141 passes through the first through hole 151 and then is wound on the rotating member 15, which can increase the connection stability between the first wire 141 and the rotating member 15 and prevent the first wire 141 from being separated from the rotating member 15 during the rotation of the rotating member 15. Similarly, the second wire 142 passes through the second through hole 152 and then is wound on the rotating member 15, which can increase the connection stability between the second wire 142 and the rotating member 15 and prevent the second wire 142 from being separated from the rotating member 15 during the rotation of the rotating member 15.

In the present embodiment, the rotating member 15 is a rotating shaft, and the preset axis 3 coincides with the axis of the rotating shaft itself. In the present embodiment, the axes of the first through hole 151 and the second through hole 152 are parallel to each other, and the axes of the first through hole 151 and the second through hole 152 are both perpendicular to the preset axis 3, that is, both the first through hole 151 and the second through hole 152 penetrate the rotation member 15 in the radial direction of the rotation member 15.

It should be noted that the direction of the first pulling wire 141 passing through the first through hole 151 is opposite to the direction of the second pulling wire 142 passing through the second through hole 152, so that after the first pulling wire 141 and the second pulling wire 142 are wound around the rotating member 15 in opposite directions, a difference of a half period exists between the first pulling wire 141 and the second pulling wire 142. That is to say, when the rotating member 15 drives the first pulling wire 141 to rotate, the rotating member 15 does not apply an acting force to the second pulling wire 142 in a half cycle of starting to rotate, and the second pulling wire 142 does not apply a pulling force to the snake bone steering member 11, so that the situation that the first pulling wire 141 and the second pulling wire 142 pull the snake bone steering member 11 at the same time can be avoided, and the snake bone steering member 11 can drive the clamping member 12 to steer more accurately.

It should be noted that, in the present embodiment, the aforementioned "half cycle" can be understood as the time required for the rotating member 15 to rotate 180 ° around the preset axis 3.

Alternatively, in other embodiments, the first wire 141 and the second wire 142 may be welded or bonded to the rotating member 15.

Referring to fig. 3, in the present embodiment, the biopsy forceps 1 further includes a rotating plate 18, and the rotating plate 18 is sleeved on the rotating member 15. It will be appreciated that the dial 18 facilitates the application of force by a worker, and that rotation of the dial 18 by a worker causes the rotary member 15 to rotate relative to the handle 13.

In addition, in the present embodiment, the rotating disc 18 is further disposed between the first pulling wire 141 and the second pulling wire 142, and the rotating disc 18 can block the first pulling wire 141 and the second pulling wire 142, so as to prevent the first pulling wire 141 and the second pulling wire 142 from interfering with each other, and ensure that the first pulling wire 141 and the second pulling wire 142 can work independently of each other.

Referring to fig. 3, in the present embodiment, a tooth-shaped structure 19 is convexly disposed on the periphery of the rotating disc 18. The dentate structure 19 can enhance the anti-slip performance, so that the worker can not easily slip when acting on the dentate structure 19, and can more accurately control the first pull wire 141 or the second pull wire 142, thereby enabling the holder 12 to more accurately reach the focus position.

Referring to fig. 4 and 5, in the present embodiment, the snake bone turning member 11 includes a plurality of moving members 113 connected in sequence, and two adjacent moving members 113 are hinged to each other, so that the function of bending the snake bone turning member 11 in different directions can be realized.

Referring to fig. 4 and 5, in the present embodiment, the snake bone turning member 11 is provided with an inner cavity 114, the first side wall 111 is provided with a plurality of first connection holes 1111, the plurality of first connection holes 1111 are all communicated with the inner cavity 114, the plurality of first connection holes 1111 are arranged at intervals along the axial direction of the snake bone turning member 11, and the first stay wire 141 simultaneously passes through the inner cavity 114 and the plurality of first connection holes 1111, so that the first stay wire 141 can be bound on the first side wall 111, the connection strength between the first stay wire 141 and the snake bone turning member 11 is improved, and the subsequent first stay wire 141 can conveniently pull the first side wall 111 to bend.

Similarly, referring to fig. 4 and 5, in the present embodiment, a plurality of second connection holes 1121 are formed in the second side wall 112, the plurality of second connection holes 1121 are all connected to the inner cavity 114, the plurality of second connection holes 1121 are arranged along the axial direction of the snake bone turning piece 11 at intervals, and the second pulling wire 142 simultaneously passes through the inner cavity 114 and the plurality of second connection holes 1121, so that the second pulling wire 142 can be bound to the second side wall 112, the connection strength between the second pulling wire 142 and the snake bone turning piece 11 is improved, and the second side wall 112 can be conveniently pulled to bend by the subsequent second pulling wire 142.

In this embodiment, each movable member 113 is provided with a first connection hole 1111 and a second connection hole 1121. In other embodiments, each movable member 113 can have two, three, four, etc. first connection holes 1111. In other embodiments, the number of the second connection holes 1121 provided in each movable member 113 may also be two, three, four, etc.

Referring to fig. 1, 2, 6 and 7, in the present embodiment, the clamping member 12 includes a transmission rod 121 and two clamping pieces 122, the two clamping pieces 122 are in transmission connection with the transmission rod 121, the bioptome 1 further includes a sliding block 20 and a connecting member 21 having a strip structure, the sliding block 20 is slidably sleeved on the handle 13, one end of the connecting member 21 is connected with the sliding block 20, and the other end of the connecting member 21 is connected with the transmission rod 121.

In actual operation, when a worker operates the sliding block 20, the sliding block 20 slides relative to the handle 13, and the sliding block 20 drives the transmission rod 121 to reciprocate through the connecting piece 21, so that the two clamping pieces 122 are controlled to move relatively close to or away from each other. It will be appreciated that the two jaws 122 are closer together to grasp body tissue and that the two jaws 122 are further apart to release the tissue.

It will be appreciated that in this embodiment, the connector 21 extends from the drive rod 121 through the lumen 114 of the snake 11, the spring tube 17 and the handle 13 to the slider 20 in that order.

Alternatively, the connecting member 21 may be fixed to the slider 20 by welding, bonding, or the like.

The present embodiment also provides a medical apparatus comprising the aforementioned biopsy forceps 1 and having all the functions of the biopsy forceps 1. It will be appreciated that the medical device may also include an endoscope for use with the bioptome 1, a magnetic navigation device as previously described for determining the particular position of the grip 12 in accordance with the magnetically guided line 16, and the like.

The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The biopsy forceps are characterized by comprising a snake bone steering piece (11), a clamping piece (12), a handle (13), a traction piece (14) and a rotating piece (15), wherein one end of the snake bone steering piece (11) is connected with the clamping piece (12), the other end of the snake bone steering piece (11) is connected with the handle (13), one end of the traction piece (14) is connected with the snake bone steering piece (11), the other end of the traction piece (14) is connected with the rotating piece (15), and the rotating piece (15) is rotatably connected with the handle (13) so as to drive the snake bone steering piece (11) to be bent towards different directions through the traction piece (14).

2. The biopsy forceps of claim 1, wherein the traction member (14) comprises a first pull wire (141) and a second pull wire (142), the snake bone steering member (11) is provided with a first side wall (111) and a second side wall (112) which are opposite to each other, one end of the first pull wire (141) is connected with the first side wall (111), the other end of the first pull wire (141) is connected with the rotating member (15), one end of the second pull wire (142) is connected with the second side wall (112), and the other end of the second pull wire (142) is connected with the rotating member (15), wherein the direction in which the first pull wire (141) is used for driving the snake bone steering member (11) to bend is opposite to the direction in which the second pull wire (142) is used for driving the snake bone steering member (11) to bend.

3. The bioptome of claim 2, wherein the first pull wire (141) and the second pull wire (142) are wound around the rotation member (15), the winding direction of the first pull wire (141) is opposite to the winding direction of the second pull wire (142), the rotation member (15) is configured to pull one of the first pull wire (141) and the second pull wire (142) in case of rotation in a preset direction, and the rotation member (15) is configured to pull the other of the first pull wire (141) and the second pull wire (142) in case of rotation in a direction opposite to the preset direction.

4. The bioptome of claim 3, wherein the rotating member (15) is rotatably connected to the handle (13) about a predetermined axis (3), the rotating member (15) is provided with a first through hole (151) and a second through hole (152), the first through hole (151) and the second through hole (152) are arranged side by side along an axial direction of the predetermined axis (3), the first pull wire (141) passes through the first through hole (151) and is wound around the rotating member (15), and the second pull wire (142) passes through the second through hole (152) and is wound around the rotating member (15), wherein a direction in which the first pull wire (141) passes through the first through hole (151) is opposite to a direction in which the second pull wire (142) passes through the second through hole (152).

5. The biopsy forceps according to claim 2, wherein the snake bone steering member (11) is provided with an inner cavity (114), the first side wall (111) is provided with a plurality of first connection holes (1111) communicating with the inner cavity (114), the plurality of first connection holes (1111) are arranged at intervals along an axial direction of the snake bone steering member (11), and the first pull wire (141) passes through the inner cavity (114) and the plurality of first connection holes (1111) at the same time to be tied to the first side wall (111).

6. The biopsy forceps according to claim 2, wherein the snake bone steering member (11) is provided with an inner cavity (114), the second side wall (112) is provided with a plurality of second connecting holes (1121) communicated with the inner cavity (114), the plurality of second connecting holes (1121) are arranged at intervals along the axial direction of the snake bone steering member (11), and the second pull wire (142) simultaneously penetrates through the inner cavity (114) and the plurality of second connecting holes (1121) to be bound on the second side wall (112).

7. The biopsy forceps according to any one of claims 1 to 6, characterized in that the forceps (1) further comprises a rotary disk (18), the rotary disk (18) being fitted over the rotary member (15).

8. Bioptome according to claim 7, wherein the carousel (18) is provided with teeth (19) protruding around its periphery.

9. Biopsy forceps according to any one of claims 1-6, characterized in that the biopsy forceps (1) further comprises a magnetic navigation line (16), wherein a part of the magnetic navigation line (16) is arranged through the snake bone steering member (11) and the handle (13), and another part of the magnetic navigation line (16) is used for connecting with a magnetic navigation device.

10. A medical device, characterized in that it comprises a bioptome (1) according to any one of claims 1 to 9.

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