CN208114608U - A kind of clamp control biopsy forceps of gallbladder/ductus pancreaticus - Google Patents

Abstract

A clamp-controlled biopsy forceps for bile/pancreatic duct, including guide wire and biopsy forceps, the biopsy forceps are set in the cavity of the biopsy forceps in the composite tube, the composite tube is a round tube with a frustum-shaped head, and the head is set with a circle X Radiographic identification mark, the composite tube is provided with a biopsy forceps cavity and a control cavity along the height direction, the biopsy forceps cavity is transparent up and down, the outlet is set on the side wall of the head, and the indwelling end of the outer wall of the composite tube is provided with a Y-shaped injection port connected to the biopsy forceps cavity; biopsy There is a semi-cylindrical groove along the height direction on the side wall of the tube body on the opposite side of the clamp cavity, and a guide wire clamp that can be opened and closed laterally is arranged in the groove, and its end is controlled by a metal control wire; the guide wire clamp is clamped on the guide wire. Sliding on the wire, the head is corresponding to the guide wire with guide groove 1 with side wall openings, and the bottom of the groove is corresponding to the guide wire with guide groove 2 with side wall openings; the head of the biopsy forceps protrudes from the head of the composite tube and the end protrudes Composite tube ends. The biopsy forceps in the composite tube of the utility model is used in cooperation with the endoscope, which is not easy to damage tissues and is convenient to control the biopsy forceps.

Description

A clamp-controlled biopsy forceps for bile/pancreatic duct

technical field

The utility model relates to a medical consumable, in particular to a clamp-controlled biopsy forceps for bile/pancreatic duct.

Background technique

Biliary/pancreatic duct biopsy forceps are used for taking tissue samples of space-occupying lesions in the bile/pancreatic duct during duodenoscopic ERCP (endoscopic retrograde cholangiopancreatography) surgery, so as to confirm the diagnosis and guide the next step of treatment.

Existing biopsy forceps refer to accompanying drawing 1, are generally used in the tissue collection of esophagus, stomach and large intestine under gastroenteroscope.

The existing biopsy forceps in the bile duct are relatively soft and thin. In ERCP, due to the special anatomical position of the bile duct and pancreatic duct, all the instruments and equipment entering the bile duct have an angle problem, and almost need to be reflexed 180 degrees for subsequent operations. Therefore, it is necessary to place a guide wire in the bile duct in advance. play a guiding role.

In order to facilitate the entry and exit of the bile duct, some endoscopic treatment accessories will have a guide wire hole at the front end of the instrument, so that these accessories can enter the bile duct more conveniently along the guide wire for inspection and treatment.

In ERCP, if it is necessary to take pathology in the bile duct, the biopsy forceps can be taken out in the bile duct after stretching out from the endoscope and reflexed close to 180 degrees. From this point of view, the existing biopsy forceps exist Focus on the following main questions:

1) The biopsy forceps are hard and difficult to enter the biliary tract smoothly;

2) The bile duct wall is thin, without guide wire guidance, it is easier to damage the bile duct wall;

3) Because the anatomical position of the pancreatic duct is lower and straighter, biopsy forceps can easily enter the pancreatic duct, which may cause serious complications such as pancreatitis;

4) No imaging function.

Utility model content

In order to overcome the defects and insufficiencies of the above-mentioned prior art, the utility model provides a composite tube biopsy forceps for the bile/pancreatic duct, which is easy to take pathology from the bile/pancreatic duct, thereby confirming the diagnosis and facilitating further treatment.

The utility model adopts the following technical solutions: a clamp-controlled biopsy forceps for bile/pancreatic duct, including guide wire and biopsy forceps, the biopsy forceps is arranged in the cavity of the biopsy forceps in the composite tube, and the head of the composite tube is small at the upper end The lower end has a large frustum shape, and the lower tube body is a slender round tube. A circle of X-ray identification marks is set on the bottom of the outer wall of the head. The biopsy forceps cavity and the control cavity are set along the height direction of the composite tube. The forceps cavity is transparent up and down, and the outlet is set on the side wall of the head, and the indwelling end of the outer wall of the composite tube is provided with a Y-shaped injection port to communicate with the biopsy forceps cavity; the side of the tube body on the opposite side of the biopsy forceps cavity There is a semi-cylindrical groove on the wall along the height direction, and a guide wire clamp that can be opened and closed laterally is arranged in the groove, and its end is connected with a metal control wire, and the metal control wire is set in communication with the groove In the control cavity of the control cavity, the guide wire clamp is clamped outside the mouth of the control cavity; the guide wire clamp is clamped on the guide wire for sliding fit, and the head is corresponding to the guide wire and has an opening with a side wall along the height direction The first guide groove, the bottom surface of the groove corresponds to the guide wire with a second guide groove with side wall openings; the end of the metal control line extends out of the end of the composite tube, and the head of the biopsy forceps extends out of the composite tube head The part and the end protrude from the end of the composite pipe.

The head is an oblique circular platform, and its radial section along the center of the guide groove and the center of the cavity of the biopsy forceps is a right-angled trapezoid.

The composite tube is provided with the biopsy forceps lumen and the control lumen parallel to each other along the height direction.

The guide wire and the composite tube are arranged in the accessory cavity of the endoscope, the head of the guide wire and the composite tube protrudes from the mouth of the accessory cavity, and the end of the guide wire and the composite tube extends from the end of the accessory cavity. protruding, the injection port protrudes from the end of the accessory cavity.

The endoscope is a duodenoscope, and the biopsy forceps are conventional biopsy forceps.

The composite tube and the mirror tube of the endoscope are flexible materials.

The guide wire clamp includes a pair of semicircular jaws with grip handles, a pair of grip handles are hinged to each other, and a compression spring is set on the side away from the jaws, and the ends of the grip handles are respectively hinged to the telescopic frame, The ends of the telescopic frame are hinged together and at the same time one end of the metal control wire is hinged.

The utility model has the following positive and beneficial effects:

1) The guide wire passes through the guide wire clamp, and through the opening and closing of the guide wire clamp, the separation or connection of the guide wire and the biopsy forceps can be controlled; the guide wire drives the biopsy forceps into the vicinity of the lesion and then opens the guide wire clamp to release the traction , making the biopsy forceps change from being pulled to a free state, which is beneficial to the next operation;

2) The biopsy forceps are set in the composite tube, which is beneficial for the device to enter the bile duct or pancreatic duct without damaging the tissue;

3) The contrast agent can be injected into the cavity of the biopsy forceps through the Y-shaped injection port. At the same time, according to the X-ray marks at the front end of the composite cavity, the situation in the bile duct or pancreatic duct can be accurately obtained, which is beneficial to the next step of the operation.

Description of drawings

Fig. 1 is the structural representation of existing biopsy forceps in endoscope;

Fig. 2 is a structural representation of the utility model in an endoscope;

Fig. 3 is a partially enlarged schematic diagram of position A in Fig. 2;

Fig. 4 is a schematic structural view of the guide wire clamp;

Fig. 5 is a partial cross-sectional view of the utility model in the control cavity and the biopsy forceps cavity;

Fig. 6 is a schematic cross-sectional view of the connection relationship between the composite tube and the endoscope.

Drawing number: 1-biopsy forceps cavity, 2-biopsy forceps, 3-composite tube, 4-head, 5-X-ray identification mark, 6-control cavity, 7-injection port, 8-groove, 9-guide Wire clamp, 10-metal control wire, 11-guide wire, 12-guide groove 1, 13-guide groove 2, 14-handle, 15-jaw, 16-compression spring, 17-telescopic frame, 18-inner Sightglass, 19-Accessory cavity.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.

The following examples are only examples for clearly illustrating the utility model, rather than limiting the implementation of the utility model. For those of ordinary skill in the art, on the basis of the following descriptions, other different forms of changes or changes can be made, and these obvious changes or changes that belong to the spirit of the present invention are still protected by the present invention within range.

A clamp-controlled biopsy forceps for the bile/pancreatic duct, comprising a guide wire 11 and a biopsy forceps 2, the biopsy forceps 2 are arranged in the biopsy forceps cavity 1 in the composite tube 3, and the head 4 of the composite tube 3 is the upper end The small lower end has a large frustum shape, and the lower tube body is a slender circular tube. A circle of X-ray identification marks 5 is set on the bottom of the outer wall of the head 4. The composite tube 3 is provided with the biopsy forceps cavity 1 and the control tube along the height direction. Cavity 6, the biopsy forceps cavity 1 is transparent up and down, the outlet is set on the side wall surface of the head 4, and the indwelling end of the outer wall of the composite tube 3 is provided with a Y-shaped injection port 7 to communicate with the biopsy forceps cavity 1; A semi-cylindrical groove 8 is formed along the height direction on the side wall of the tube body on the opposite side of the biopsy forceps cavity 1, and a guide wire clamp 9 that can be opened and closed laterally is arranged in the groove 8, and its end is connected to a metal control. wire 10, the metal control wire 10 is set in the control cavity 6 communicating with the groove 8, the guide wire clamp 9 is stuck outside the mouth of the control cavity 6; the guide wire clamp 9 is clamped in Sliding fit on the guide wire 11, the head 4 corresponds to the guide wire 11 and has a guide groove 12 with a side wall opening along the height direction, and the bottom surface of the groove 8 corresponds to the guide wire 11 and has a guide groove 2 with a side wall opening 13. The end of the metal control wire 10 protrudes from the end of the composite tube 3 , the head of the biopsy forceps 2 protrudes from the head 4 of the composite tube 3 , and the end protrudes from the end of the composite tube 3 .

The head 4 is an oblique circular platform, and its radial section along the center of the guide groove 12 and the center of the biopsy forceps chamber 1 is a right-angled trapezoid.

The composite tube 3 is provided with the biopsy forceps lumen 1 and the control lumen 6 parallel to each other along the height direction.

The guide wire 11 and the composite tube 3 are arranged in the accessory cavity 19 of the endoscope 18, the head of the guide wire 11 and the composite tube 3 protrude from the mouth of the accessory cavity 19, and the guide wire 11 and the composite tube 3 protrudes from the end of the attachment cavity 19, and the injection port 7 protrudes from the end of the attachment cavity 19.

The endoscope 18 is a duodenoscope, and the biopsy forceps 2 are conventional biopsy forceps.

The mirror tubes of the composite tube 3 and the endoscope 18 are flexible materials.

The guide wire clamp 9 includes a pair of semicircular jaws 15 with grip handles 14, a pair of grip handles 14 are hinged to each other and a compression spring 16 is set on the side away from the jaws, and the grip handles 14 The telescopic frames 17 are respectively hinged at the ends, and the ends of the telescopic frames 17 are hinged together and one end of the metal control wire 10 is hinged at the same time.

Features of the utility model:

1) The composite tube 3 has a double-chamber function, the front end is tapered, and there is an X-ray identification mark 5. The contrast agent is injected from the injection port 7, and the biopsy forceps 2 can be identified at any time through the endoscope 18 combined with the X-ray identification mark 5. s position.

2) shrink the biopsy forceps 2 in the biopsy forceps cavity 1 in advance, and after reaching the target site, release the guide wire 11 and stretch out the biopsy forceps 2 to collect materials. This design is more conducive to the smooth entry of the overall device into the bile duct, reducing resistance and damage to tissues near the bile duct.

3) On one side of the composite tube 3, a guide wire clamp 9 passing through the guide wire 11 is set, and the metal control wire 10 connected to the end of the guide wire clamp 9 controls the opening and closing of the guide wire clamp 9. Under the guidance of the guide wire 11 of the wire clamp 9, the composite tube 3 and the biopsy forceps 2 can smoothly enter the bile (pancreatic) duct; the metal control wire 10 is arranged in the control cavity 6 of the composite tube 3.

4) During the process of entering the bile duct, the guide wire clamp 9 is closed, so that the composite tube 3 can enter the biliary tract along the guide wire 11 in the guide wire clamp 9; Break away from the shackles of the guide wire 11 and have relatively free mobility, then open the guide wire clamp 9 to release the guide wire 11 .

working principle:

1) After the endoscope 18 is passed into the human body to a suitable position, the guide wire 11 is first passed through the accessory cavity 19 of the endoscope 18 from the indwelling end of the endoscope 18, and extends from the mouth of the cavity to the lesion; The guide wire clamp 9 on the 3 is inserted from the end of the guide wire 11, pushes the composite tube 3 along the accessory cavity 19, and protrudes from the cavity mouth to the lesion;

2) After reaching the target position, pull the metal control wire 10 outward to open the guide wire clamp 9 in the semicircular groove 8, the guide wire 11 and the upper end of the composite tube 3 are separated, and the biopsy forceps 2 inside the composite tube 3 are Surgical operations can be performed without being bound by the guide wire 11 .

Claims (7)

1. a kind of clamp of gallbladder/ductus pancreaticus controls biopsy forceps, including seal wire (11) and biopsy forceps (2), which is characterized in that the work In the biopsy forceps chamber (1) that inspection pincers (2) are arranged in multiple tube (3), multiple tube (3) head (4) is big top and small bottom Truncated conical shape, lower pipe body are long micropipe, and X-ray distinguishing mark (5) are enclosed in the lateral wall bottom setting one of the head (4), The biopsy forceps chamber (1) is arranged along short transverse for the multiple tube (3) and control chamber (6), the biopsy forceps chamber (1) are led to up and down Thoroughly, outlet is arranged in the side wall surface of the head (4), and multiple tube (3) outer wall indwelling end setting Y shape injection port (7) is even Lead to the biopsy forceps chamber (1)；It is recessed that along short transverse semi-cylindrical is provided on the tube wall of biopsy forceps chamber (1) opposite side Slot (8), setting can be transversely opened and closed in the groove (8) seal wire clamp (9), its end connection metal control wires (10), institute Metal control wires (10) setting is stated in the control chamber (6) being connected to the groove (8), the seal wire clamp (9) is stuck in described Outside control chamber (6) accent；The seal wire clamp (9) is clipped on seal wire (11) and is slidably matched, and the head (4) is corresponding seal wire (11) The guide groove one (12) with sidewall opening is provided with along short transverse, and groove (8) bottom surface, which corresponds to seal wire (11) and is provided with side wall, opens The guide groove two (13) of mouth；

Multiple tube (3) end is stretched out in metal control wires (10) end, and biopsy forceps (2) head is stretched out described compound Manage (3) head (4), multiple tube (3) end is stretched out in end.

2. a kind of clamp of gallbladder/ductus pancreaticus as described in claim 1 controls biopsy forceps, which is characterized in that the head (4) is Oblique rotary table is right-angled trapezium along the radial section at guide groove one (12) center and biopsy forceps chamber (1) center.

3. a kind of clamp of gallbladder/ductus pancreaticus as described in claim 1 controls biopsy forceps, which is characterized in that the multiple tube (3) The biopsy forceps chamber (1) being parallel to each other along short transverse setting and control chamber (6).

4. a kind of clamp of gallbladder/ductus pancreaticus as described in claim 1 controls biopsy forceps, which is characterized in that the seal wire (11) With multiple tube (3) setting in the attachment chamber (19) of endoscope (18), the head of the seal wire (11) and multiple tube (3) is from attachment Chamber (19) accent stretches out, and the end of the seal wire (11) and multiple tube (3) is stretched out from attachment chamber (19) end, the injection Mouth (7) is stretched out from attachment chamber (19) end.

5. a kind of clamp of gallbladder/ductus pancreaticus as claimed in claim 4 controls biopsy forceps, which is characterized in that the endoscope It (18) is duodenoscope, the biopsy forceps (2) is conventional bioptome.

6. a kind of clamp of gallbladder/ductus pancreaticus as claimed in claim 4 controls biopsy forceps, which is characterized in that the multiple tube (3), the mirror tube of endoscope (18) is flexible material.

7. a kind of clamp of gallbladder/ductus pancreaticus as described in claim 1 controls biopsy forceps, which is characterized in that the seal wire clamp It (9) include a pair of semicircle clamping jaw (15) for having clamp holder (14), far from jaw after a pair of clamp holder (14) is mutually hinged Side compressed spring (16) are set, clamp holder (14) end is respectively articulated with expansion bracket (17), expansion bracket (17) end One of the hinged while hinged metal control wires (10).