CN210472182U - Biopsy forceps - Google Patents

Abstract

The utility model relates to the field of medical equipment, a biopsy forceps is disclosed, including binding clip (1), hollow pincers body (2) and handle (3) that connect gradually, binding clip (1) includes first pincers lamella (11) and second pincers lamella (12), the closed line (13) that first pincers lamella (11) and second pincers lamella (12) formed after closed mutually with contained angle has between length direction axis (21) of pincers body (2), and is provided with guide wire passageway (22) on this pincers body (2), be provided with control on handle (3) crooked bending control device of binding clip (1) and control the control mechanism that binding clip (1) was opened and close. The utility model discloses a biopsy forceps not only can go out leading-in pancreas bile duct system pincers more conveniently and get pathological change tissue, moreover, the cost is lower, easily production assembly.

Description

Biopsy forceps

Technical Field

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

Background

In clinical medical examinations, endoscopy has been widely used as a method for assisting diagnosis. The biopsy forceps can enter the body of a patient through an endoscope to inspect internal diseases and clamp lesion tissues, so that pathological basis is provided for diagnosis.

At present, when the retrograde cholangiopancreatography (ERCP) examination is carried out, especially for patients with cholangiopancreatography, how to take the pathological basis of the tissue or the cytology is difficult, and the current clinical common use is that: (1) the positive rate of the cytobrush is 30-50%, the cost is high, and the cytobrush is disposable and is only the basis of cytology; (2) the fine needle puncture technology (EUS-FNA) under the guidance of an ultrasonic endoscope requires cytological puncture under the guidance of the ultrasonic Endoscope (EUS), has the same low positive rate and is similar to a bile duct cytobrush; (3) the pancreaticobiliary endoscope biopsy under direct vision, such as the cholangioscopy system (spyglass) on Boston science in recent years, the outer diameter is 12Fr (circumference), the biopsy forceps with the diameter of 2mm can be applied through a therapeutic duodenoscope biopsy channel, and the biopsy forceps are divided into a fiber type biopsy forceps and an electronic type biopsy forceps, so that the biopsy tissues are few, the biopsy forceps are disposable, the cost is high, the biopsy can be performed under direct vision, the positive rate is greatly improved, but 2 skilled endoscopists are required to be matched with each other; (4) the common biopsy forceps or the biopsy forceps with the diameter of 2.2mm are inserted into the narrow part of the pancreatic and bile duct for biopsy through a duodenoscope biopsy duct, and the defects are that the directions of the biopsy forceps and the pancreatic and bile duct are approximately vertical, the pancreatic and bile duct system is difficult to insert, and the biopsy forceps are tangential, so the material obtaining is difficult to satisfy.

The existing biopsy forceps are hose type biopsy forceps which comprise a forceps head, a spring tube, a pull rope and a handle. However, when the existing biopsy forceps are used with an endoscope, the portion of the front section of the forceps head extending out is parallel to the endoscope, so that the biopsy forceps cannot be captured by the lens of the endoscope, and the difficulty of clamping lesion tissues by the forceps head is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a biopsy forceps is provided, this biopsy forceps not only can go out leading-in pancreas bile duct system pincers more conveniently and get pathological change tissue, moreover, the cost is lower, easy to produce assembly.

In order to realize the above-mentioned purpose, the utility model provides a biopsy forceps, including binding clip, hollow pincers body and the handle that connects gradually, the binding clip includes first pincers lamella and second pincers lamella, the closed line that first pincers lamella and second pincers lamella closed back formed with the contained angle has between the length direction axis of pincers body, and should be provided with the seal wire passageway on the pincers body, be provided with control on the handle crooked bending control device of binding clip and control the control mechanism that the binding clip opened and close.

Preferably, the handle includes the inner tube and overlaps the outer tube on the inner tube, be equipped with many slides and be equipped with first annular slide along circumference on the inner tube lateral wall along the axial, first annular slip is linked together with each the one end port of slide, is equipped with a plurality of spacing grooves on the lateral wall of each slide, and is equipped with at least one L type slide along the axial on the inside wall of this inner tube.

Furthermore, the binding clip is connected with the binding clip body through a spring pipe, the bending control device comprises a wire drawing and a control piece, one end of the wire drawing is connected with the binding clip, and the end of the wire drawing can move around the circumference of the binding clip; the other end of the wire drawing is connected with the control piece, and the control piece is provided with a limiting block which is suitable for being matched with the slide way, the first annular slide way and the limiting groove.

Specifically, a second annular slideway is arranged on the binding clip, and the second annular slideway is suitable for being matched with a first sliding block connected to the end of the drawn wire.

More preferably, the control mechanism comprises at least one traction wire and a control member, and one end of any traction wire is connected to the control member; the other end of one of the traction wires is connected with the first clamp clack or the second clamp clack; or the other ends of the two traction wires are respectively connected with the first clamp clack and the second clamp clack in a one-to-one correspondence manner; the control piece is sleeved in the inner pipe, and a second sliding block matched with the L-shaped slide way is arranged on the control piece.

Typically, the clamp body is sleeved with a sleeve, and a gap between the sleeve and the clamp body is formed as the guide wire channel.

Typically, the caliper body is provided with scale marks.

Specifically, a guide wire duct suitable for a guide wire to pass through is arranged on the first clamp flap.

Typically, the opening edges of the first and second jaws have cutting edges.

Through the technical scheme, the beneficial effects of the utility model are as follows:

the utility model discloses an among the basic technical scheme, at first, the contained angle has between the closed line of first pincers lamella and second pincers lamella and the axis of pincers body, be different from the binding clip of current biopsy forceps just to the mode that the pincers body set up, can reduce the degree of difficulty that gets into pancreas bile duct system, crooked controlling means can control that the binding clip is crooked, can further reduce the degree of difficulty that gets into pancreas bile duct system, secondly, because the contained angle has between the closed line of first pincers lamella and second pincers lamella and the axis of pincers body, when pathological change tissue is got to pincers, the binding clip of current biopsy forceps is similar parallel with the pancreas bile duct, tangential direction promptly, can get pathological change tissue better pincers, moreover, it is right to pass the seal wire passageway through the guide wire guide of the utility model discloses a biopsy forceps's guide, can carry out more accurate location to the pathological change region.

In addition, the slide way, the first annular slide way, the limiting groove and the L-shaped slide way which are arranged on the inner pipe can better control the bending of the binding clip and control the opening and closing of the first clamp clack and the second clamp clack.

And, be equipped with second annular slide on the binding clip, second annular slide can cooperate with the first slider that the end of wire drawing is connected for the wire drawing can be followed the axial and rotated, can make the binding clip multi-angle bending, and the practicality is better.

Further advantages of the invention, as well as the technical effects of preferred embodiments, will be further explained in the following detailed description.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a handle according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a binding clip according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 1 taken along direction B;

fig. 6 is a schematic structural view of an inner tube in an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view taken along line C-C of FIG. 6;

fig. 8 is a schematic cross-sectional view taken along line D-D of fig. 6.

Description of the reference numerals

1 binding clip

11 first clamp flap 111 guide wire pore canal

12 second jaw 13 closing line

2 body of the pliers

21 axis 22 guidewire channel

3 handle

31 inner tube 311 slide

312 first annular slideway 313 spacing groove

314L type slide

32 outer tube

4 spring tube

51 wire drawing 52 operating piece

53 stop block 54 first slide block

6 second annular slideway

71 control member of traction wire 72

73 second slider 8 sleeve

9 guide wire

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the description of the present invention, unless otherwise specified, the terms "left", "right", "inner" and "outer" are based on the positional and orientational relationships shown in the drawings, and the terms are used merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of said features.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 8, the utility model discloses a biopsy forceps in basic technical scheme, including binding clip 1, hollow pincers body 2 and the handle 3 that connect gradually, binding clip 1 includes first pincers lamella 11 and second pincers lamella 12, first pincers lamella 11 and second pincers lamella 12 closed back formation closed line 13 with contained angle has between the length direction axis 21 of pincers body 2, and is provided with seal wire channel 22 on this pincers body 2, be provided with control on the handle 3 crooked controlling means of binding clip 1 and control the control mechanism that binding clip 1 opened and close, control promptly first pincers lamella 11 and second pincers lamella 12 are opened and close. The forceps head 1 further comprises a hollow installation section, and the first forceps half 11 and the second forceps half 12 are installed on the installation section.

The closing line 13 formed by closing the first jaw piece 11 and the second jaw piece 12 means a line formed by the contact portion of the first jaw piece 11 and the second jaw piece 12 as shown in a plane in fig. 3 when the first jaw piece 11 and the second jaw piece 12 are closed; the reason is to distinguish from the way that the forceps head of the conventional biopsy forceps is mounted on the forceps body in a right-to-right manner, that is, the "included angle is formed between the closing line 13 formed by the first forceps flap 11 and the second forceps flap 12 after being closed and the axis 21 of the forceps body 2 in the length direction" means that when the first forceps flap 11 and the second forceps flap 12 are in the closed state, the first forceps flap 11 and the second forceps flap 12 are mounted on the end portion of the forceps head 1 in an inclined manner at a certain angle, which is greater than 0 ° and less than or equal to 30 °, so that the pancreatic biliary duct system is convenient to enter, and when a diseased tissue is grasped in the pancreatic biliary duct, the grasping is easier, wherein the included angle formed between the closing line 13 and the axis 21 may be the included angle formed by intersecting in the plane as shown in fig. 3, or the included angle formed by intersecting in the plane as shown in fig. 3, for example, the included angle formed by perpendicular to the plane as shown in fig. 3 An included angle is formed in the vertical direction; it will be appreciated that other forms of jaw members may form a reference line similar to the line of closure 13 when closed, and therefore, should not be construed as limiting the invention; the clamp body 2 can be made of tubular products with rectangular and triangular sections, preferably, circular tubes, and the axis 21 is the axis of the tubular product defined conventionally; fig. 1 shows a manner of providing a guide wire channel 22 on the forceps body 2, that is, a tube is sleeved on the forceps body 2 to form the guide wire channel, and in addition, a through hole can be provided in the side wall of the forceps body 2 to form the guide wire channel.

In the basic technical scheme, firstly, the biopsy forceps are disinfected, then a guide wire penetrates through the guide wire channel 22, the biopsy forceps are guided through the guide wire, meanwhile, the first forceps flap 11 and the second forceps flap 12 are closed by the control mechanism, then the forceps head 1 obtains a certain curvature by the bending control device, the closed first forceps flap 11 and the closed second forceps flap 12 which are obliquely arranged at the end part of the forceps head 1 are matched, the forceps head can be conveniently inserted into the narrow part of the pancreaticobiliary duct, and after the forceps head 1 reaches the diseased tissue, the control mechanism is operated to open the first forceps flap 11 and the second forceps flap 12 to carry out biopsy sampling on the diseased tissue for definite diagnosis; the first clamp flap 11 and the second clamp flap 12 are obliquely arranged at the end part of the clamp head 1, so that the biopsy forceps are easy to insert into the pancreatic and bile ducts, and when the diseased tissue is obtained by forceps, the first clamp flap 11, the second clamp flap 12 and the wall of the pancreatic and bile ducts are not parallel, so that the diseased tissue can be conveniently subjected to biopsy sampling; the common biopsy forceps are hard in texture and are approximately perpendicular to the direction of the pancreaticobiliary duct, so that the pancreaticobiliary duct is difficult to insert, and when pathological tissues are obtained through forceps, the common biopsy forceps are approximately parallel to the pancreaticobiliary duct wall, so that the material obtaining effect is poor.

Referring to fig. 2 and 5 to 8, in the preferred embodiment of the present invention, the handle 3 includes an inner tube 31 and an outer tube 32, the outer tube 32 is sleeved on the inner tube 31, there is a certain gap between the outer tube 32 and the inner tube 31, and it is fixed by connecting a section of bar structure, a plurality of slideways 311 and a first annular slideway 312 are arranged along the axial direction on the outer side wall of the inner tube 31, as shown in fig. 2, the first annular slideway 312 is communicated with the left end port of each slideway 311, a plurality of limiting grooves 313 are arranged on the side wall of each slideway 311, and at least one L-shaped slideway 314 is arranged along the axial direction on the inner side wall of the inner tube 31. Facilitating the cooperation with the bending control device and the control mechanism.

Referring to fig. 2, 3, 5 to 8, in a more preferred embodiment of the present invention, the binding clip 1 is connected to the binding clip body 2 through the spring tube 4, as shown in fig. 2 and 3, the bending control device includes a wire 51 and a manipulating member 52, the left end of the wire 51 is connected to the binding clip 1, and the left end of the wire 51 can move around the circumference of the binding clip 1; the right end of the wire drawing 51 is connected with the operating piece 52, and the operating piece 52 is provided with a limiting block 53 which is suitable for being matched with the slide way 311, the first annular slide way 312 and the limiting groove 313. Thus, the limiting block 53 can slide in the first annular slide way 312, the slide way 311 and the limiting groove 313 respectively by moving the operating piece 52, when the limiting block 53 is matched with the first annular slide way 312 for use, the end of the wire drawing 51 can be controlled to move around the circumferential direction of the binding clip 1 by moving the operating piece 52 around the circumferential direction of the inner tube 31, so that the bending direction of the binding clip 1 can be controlled conveniently, when the limiting block 53 slides in the slide way 311, the bending degree of the binding clip 1 can be changed conveniently, and when the limiting block 53 is clamped in the limiting groove 313, the bending degree of the binding clip 1 can be fixed, so that the biopsy sampling is facilitated; the drawing wire 51 can be made of various medical materials such as plastic wires, rubber ropes, metal wires and the like; in addition, in order to facilitate the sliding of the limiting block 53 into the slideway 311, an inclined groove may be formed at an inlet of the slideway 311, that is, at an end of the slideway 311 communicating with the first annular slideway 312, as shown in fig. 6.

Referring to fig. 2, 3, 5 to 8, in an embodiment of the present invention, a second annular slide 6 is provided on the binding clip 1, that is, a second annular slide 6 is provided in the mounting section, and the second annular slide 6 can be engaged with the first slider 54 connected to the end of the wire 51. Thus, when the operating member 52 slides along the inner tube 31 in the circumferential direction, the first slider 54 is driven to slide along the second annular slideway 6, i.e. the pull wire 51 can be driven to move in the circumferential direction, so that the forceps head 1 can be bent in multiple directions, and the biopsy forceps can be inserted into the pancreatic bile duct more easily.

Referring to fig. 1 to 3 and 5 to 8, in a preferred embodiment of the present invention, the control mechanism includes at least one pull wire 71 and a control member 72, and one end of any one of the pull wires 71 is connected to the control member 72; the other end of one of the pull wires 71 is connected to the first forceps flap 11 or the second forceps flap 12, or the other ends of the two pull wires 71 are connected to the first forceps flap 11 and the second forceps flap 12 respectively in a one-to-one correspondence; the control member 72 is sleeved in the inner tube 31, and a second sliding block 73 matched with the L-shaped sliding way 314 is arranged on the control member 72. The traction wire 71 can be made of various medical materials such as plastic wires, rubber ropes, metal wires and the like.

It should be noted that fig. 3 shows a technical solution in which the first clamp petal 11 and the second clamp petal 12 are respectively connected to a traction wire 71, so that the control member 72 moves to drive the first clamp petal 11 and the second clamp petal 12 to rotate at the same time, and further control the opening and closing of the first clamp petal 11 and the second clamp petal 12; it can be understood that only one of the first and second clamp petals 11 and 12 can be moved, and the other can be fixed, for example, the first clamp petal 11 is fixed in position, the second clamp petal 12 is connected with the pull wire 71, and the second clamp petal 12 is controlled by the control member 72 to rotate, or the first clamp petal 11 is connected with the pull wire 71, the first clamp petal 11 is controlled by the control member 72 to rotate, and the second clamp petal 12 is fixed in position, so that only one pull wire 71 is needed to control the opening and closing of the first and second clamp petals 11 and 12; further, the first clip 11 and the second clip 12 may share one or respectively use one rotating shaft, two ends of the rotating shaft are connected with the inner wall of the binding clip 1, that is, the first clip 11 and the second clip 12 may share one or respectively use one rotating shaft, two ends of the rotating shaft are connected with the inner wall of the mounting section, the ends of the first clip 11 and the second clip 12 may be connected with the inner wall of the binding clip 1 through springs, that is, the ends of the first clip 11 and the second clip 12 may be connected with the inner wall of the mounting section through springs, when the control member 72 releases the traction on the first clip 11 and the second clip 12, the first clip 11 and the second clip 12 may be opened under the action of the springs, and the two opened wing angles may be greater than 90 °; when the control member 72 moves to the outside of the inner tube 31, and the second slider 73 on the control member 72 slides along the L-shaped slide way 314, when the second slider 73 slides to the end of the L-shaped slide way 314, the control member 72 can be slightly rotated to drive the second slider 73 to slide into the groove at the end of the L-shaped slide way 314, at this time, the first jaw 11 and the second jaw 12 are just closed, the closed state of the first jaw 11 and the second jaw 12 is conveniently maintained, and after the second slider 73 slides out of the groove at the end of the L-shaped slide way 314, the first jaw 11 and the second jaw 12 can be gradually opened, so that the biopsy sampling is convenient.

In the specific embodiment, fig. 1 shows a technical scheme that a sleeve 8 is sleeved outside a caliper body 2, so that a gap between the sleeve 8 and the caliper body 2 is formed into a guide wire channel 22. It can be understood that the guide wire channel 22 can also be formed by providing through holes in the side wall of the caliper body 2, as shown in fig. 4, or the guide wire channel 22 can be formed by providing pipes side by side outside the caliper body 2; in addition, the length of the guide wire channel 22 can be designed according to the needs, for example, it can be as long as the forceps body 2, and a section is arranged at the end close to the forceps head 1, or a section is arranged at the end close to the handle 3.

In a specific embodiment, as shown in fig. 1, the caliper body 2 may be provided with scale marks. Therefore, the biopsy forceps are convenient for an operator to calculate the extending length of the biopsy forceps during operation, and the sampling process is controlled more accurately.

As shown in fig. 1, in the preferred embodiment of the present invention, a guide wire hole 111 suitable for the guide wire 9 to pass through is provided on the first clamp piece 11. The guide wire duct 111 enables the guide wire 9 to pass through the first clamp flap 11, and when the biopsy forceps enters the pancreatic bile duct along the guide wire 9, the biopsy forceps can be guided to reach a diseased region, so that biopsy sampling is more convenient.

As shown in FIG. 4, the opening edges of the first and second clamp halves 11 and 12 are knife edges, as one specific embodiment. Thus, the pathological tissue is convenient to cut.

Referring to fig. 1 to 8, the biopsy forceps in the preferred embodiment of the present invention includes a forceps head 1, a hollow forceps body 2 and a handle 3, which are connected in sequence, wherein the forceps head 1 includes a first forceps flap 11 and a second forceps flap 12, a closed line 13 of the first forceps flap 11 and the second forceps flap 12 forms an included angle with an axis 21 of the forceps body 2, that is, the first forceps flap 11 and the second forceps flap 12 are obliquely installed at an end of the forceps head 1, and are not parallel to a wall of a pancreatic bile duct in the pancreatic bile duct, so as to better grasp a diseased tissue, the other end of the forceps head 1 is connected to the forceps body 2 through a spring tube 4, so as to reduce difficulty of entering the pancreatic bile duct system, and particularly, the first forceps flap 11 and the second forceps flap 12 are obliquely installed to cooperate with the spring tube 4, so as to be able to be guided into the pancreatic bile duct system more easily, a sleeve 8 is sleeved on an end section of the forceps body 2 close to the forceps head 1, the gap between the sleeve 8 and the forceps body 2 forms a guide wire channel 22, a guide wire pore 111 is arranged on the first forceps flap 11, a guide wire 9 sequentially passes through the guide wire channel 22 and the guide wire pore 111 to guide the forceps head 1 to reach lesion tissues in the pancreatic bile duct, the handle 3 comprises an inner tube 31 and an outer tube 32, the outer tube 32 is sleeved on the inner tube 31, a certain gap is formed between the outer tube 32 and the inner tube 31 and is fixedly connected through a section of strip-shaped structure, a plurality of slideways 311 and a first annular slideway 312 are axially arranged on the outer side wall of the inner tube 31 along the circumferential direction, the first annular slideway 312 is communicated with the port of each slideway 311, a plurality of limiting grooves 313 are arranged on the side wall of each slideway 311, the operating piece 52 can be matched with the first annular slideway 312, each slideway 311 and the limiting groove 313 through a limiting block 53 on the operating piece, is arranged in the gap between the outer tube 32 and the inner tube 31 and can move, the operating piece 52 is further connected with a wire 51, the wire 51 is connected with a first slide block 54, the first slide block 54 can be matched with a second annular slide way 6 on the binding clip 1, so that when the operating piece 52 rotates in a gap, the first slide block 54 can be driven to rotate along the second annular slide way 6, the binding clip 1 can be bent at multiple angles, usability is improved, actually, the limiting block 53 rotates along the first annular slide way 312, after the operating piece 52 rotates to a preset position, the operating piece 52 is pulled out along the axial direction of the inner tube 31, at this time, the limiting block 53 enters a slide way 311 and moves along the slide way 311, when the binding clip 1 is bent to a required degree, the operating piece 52 is rotated, the limiting block 53 enters a limiting groove 313, the locking of the bending degree of the binding clip 1 is realized, and the bending of the binding clip 1 can; a control piece 72 is arranged in the inner tube 31, the control piece 72 is provided with a second slide block 73, the second slide block 73 can be matched with an L-shaped slide way 314 on the inner wall of the inner tube 31, the control piece 72 is connected with the first clamp clack 11 and/or the second clamp clack 12 through a pull wire 71, so that when the control piece 72 is pulled out of the inner tube 31, the second slide block 73 slides along the L-shaped slide way 314 to gradually close the first clamp clack 11 and the second clamp clack 12, and when the second slide block 73 moves to the end part of the L-shaped slide way 314, the control piece 72 is rotated to enable the second slide block 73 to enter a groove at the end part of the L-shaped slide way 314, and the closed state of the first clamp clack 11 and the second clamp cla; in addition, the first clamp petal 11 and the second clamp petal 12 are connected with the inner wall of the clamp head 1 through a rotating shaft, and the end parts of the first clamp petal 11 and the second clamp petal 12 are connected with the inner wall of the clamp head 1 through springs, so that the first clamp petal 11 and the second clamp petal 12 can be conveniently opened under the action of the springs, and the opening and closing of the first clamp petal 11 and the second clamp petal 12 can be well controlled; moreover, the forceps body 2 can be provided with scale marks, so that an operator can calculate the extending length of the biopsy forceps during operation conveniently, and the sampling process can be controlled more accurately; the edges of the openings of the first clamp flap 11 and the second clamp flap 12 are blades, so that the pathological tissue can be cut conveniently; the biopsy forceps of the utility model has simple structure, convenient use, convenient production and low cost.

Next, referring to fig. 1 to 8, the use of the biopsy forceps of the present invention will be described.

Firstly, the biopsy forceps are disinfected, then the guide wire 9 passes through the guide wire channel 22 and the guide wire duct 111, the biopsy forceps are guided by the guide wire 9, the control piece 72 is drawn outwards, the first jaw 11 and the second jaw 12 are closed by the traction wire 71, the control piece 72 is rotated, the second slide block 73 enters the groove at the end part of the L-shaped slide way 314, the closed state of the first jaw 11 and the second jaw 12 is locked, the operating piece 52 is moved along the circumferential direction, the first slide block 54 is driven to slide on the second annular slide way 6, when the position of the forceps head 1 needing to be bent is reached, the operating piece 52 is drawn outwards, the forceps head 1 obtains a certain bending degree by the wire drawing 51, the limiting block 53 enters the limiting groove 313, the bending position of the forceps head 1 is locked, the closed first jaw 11 and the closed second jaw 12 which are obliquely arranged at the end part of the forceps head 1 are matched, and the stenosal region can be easily guided, when the forceps head 1 reaches the pathological tissue, the control part 72 is used for controlling the opening and closing of the first forceps flap 11 and the second forceps flap 12 to carry out biopsy sampling on the pathological tissue for definite diagnosis; the first clamp flap 11 and the second clamp flap 12 are obliquely arranged at the end part of the clamp head 1, so that the biopsy forceps are easy to insert into the pancreatic and bile ducts, and when the diseased tissue is obtained by forceps, the first clamp flap 11, the second clamp flap 12 and the wall of the pancreatic and bile ducts are not parallel, so that the diseased tissue can be conveniently subjected to biopsy sampling; the common biopsy forceps are hard in texture and are approximately perpendicular to the direction of the pancreaticobiliary duct, so that the pancreaticobiliary duct is difficult to insert, and when pathological tissues are obtained through forceps, the common biopsy forceps are approximately parallel to the pancreaticobiliary duct wall, so that the material obtaining effect is poor; during the process of guiding the biopsy forceps, the position of the lesion tissue can be determined according to the scale marks on the forceps body 2; by using the manipulation member 52 and the control member 72 in combination, the introduction of the biopsy forceps is facilitated and the biopsy sampling is facilitated.

It should be noted that, although the present invention has been described with the pancreaticobiliary duct as an example in the specific embodiment of the present invention, it can be understood that the present invention is not limited to the application in the field of pancreaticobiliary duct, and can also be applied to other related aspects, for example, the intestines and stomach.

In the description of the present invention, reference to the description of the terms "specific embodiment," "preferred embodiment," "more preferred embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims (9)

1. The utility model provides a biopsy forceps, is including binding clip (1), hollow pincers body (2) and handle (3) that connect gradually, its characterized in that, binding clip (1) includes first pincers lamella (11) and second pincers lamella (12), closed line (13) that first pincers lamella (11) and second pincers lamella (12) formed after closed mutually with have the contained angle between length direction axis (21) of pincers body (2), and be provided with guide wire passageway (22) on this pincers body (2), be provided with the control on handle (3) crooked bending control device of binding clip (1) and control the control mechanism that binding clip (1) was opened and close.

2. The biopsy forceps according to claim 1, wherein the handle (3) comprises an inner tube (31) and an outer tube (32) sleeved on the inner tube (31), the outer side wall of the inner tube (31) is provided with a plurality of slideways (311) along an axial direction and a first annular slideway (312) along a circumferential direction, the first annular slideway (312) is communicated with one end port of each slideway (311), the side wall of each slideway (311) is provided with a plurality of limiting grooves (313), and the inner side wall of the inner tube (31) is provided with at least one L-shaped slideway (314) along the axial direction.

3. The biopsy forceps according to claim 2, wherein the forceps head (1) is connected with the forceps body (2) through a spring tube (4), the bending control device comprises a pull wire (51) and a manipulating piece (52), one end of the pull wire (51) is connected with the forceps head (1), and the end of the pull wire (51) can move around the circumference of the forceps head (1); the other end of the wire drawing (51) is connected with the control piece (52), and the control piece (52) is provided with a limiting block (53) which is suitable for being matched with the slide way (311), the first annular slide way (312) and the limiting groove (313).

4. Biopsy forceps according to claim 3, characterized in that the forceps head (1) is provided with a second annular slideway (6), the second annular slideway (6) being adapted to cooperate with a first slider (54) connected to the end of the pull wire (51).

5. The bioptome of claim 2, wherein the control mechanism comprises at least one pull wire (71) and a control member (72), one end of either of the pull wires (71) being attached to the control member (72); the other end of one of the traction wires (71) is connected with the first clamp clack (11) or the second clamp clack (12); or the other ends of the two traction wires (71) are respectively connected with the first clamp clack (11) and the second clamp clack (12) in a one-to-one correspondence manner; the control piece (72) is sleeved in the inner pipe (31), and a second sliding block (73) matched with the L-shaped slide way (314) is arranged on the control piece (72).

6. Biopsy forceps according to claim 1, characterized in that the forceps body (2) is sheathed with a sleeve (8), and a gap between the sleeve (8) and the forceps body (2) is formed as the guide wire channel (22).

7. Biopsy forceps according to any one of claims 1 to 5, characterized in that the forceps body (2) is provided with scale markings.

8. The biopsy forceps according to any one of claims 1 to 6, characterized in that the first forceps flap (11) is provided with a guide wire duct (111) adapted for the passage of a guide wire (9).

9. The biopsy forceps according to any one of claims 1 to 6, characterized in that the opening edges of the first and second forceps flaps (11, 12) have a cutting edge.

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