CN114099908B

CN114099908B - Guide wire marking device for ERCP

Info

Publication number: CN114099908B
Application number: CN202111665452.8A
Authority: CN
Inventors: 赵宇; 蔡江
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-11-25
Anticipated expiration: 2041-12-31
Also published as: CN114099908A

Abstract

The application discloses a guide wire marking device for an ERCP (percutaneous transluminal coronary angioplasty), which belongs to the technical field of medical instruments, and comprises a fixing device, a connecting short pipe and a guide wire marking device, wherein the fixing device is sleeved and fixed at the top end of the connecting short pipe, the fixing device is provided with a central hole for the guide wire to pass through, and the side wall of the fixing device is provided with a horizontal strip-shaped cavity; a marking assembly comprising a pusher, a reservoir, and a first marking tip; the liquid storage pipe is internally provided with marking liquid and is arranged in the long-strip cavity; the pushing piece, the liquid storage pipe and the first marking nozzle form an injector structure; one end of the pushing piece is positioned on the outer side of the side wall of the fixing device, and the liquid outlet of the first marking nozzle is positioned on the inner side of the side wall of the fixing device. The guide wire marking device realizes semi-automatic marking of the guide wire, and solves the problem that the length of a narrow section of a bile duct or a pancreatic duct is difficult to accurately measure when the patient is examined in the existing endoscopic retrograde cholangiopancreatography.

Description

Guide wire marking device for ERCP

Technical Field

The application relates to the technical field of medical instruments, in particular to a guide wire marking device for an ERCP.

Background

At present, the medical apparatus refers to instruments, equipment, appliances, in-vitro diagnostic reagents and the like which are directly or indirectly used for human bodies. In performing an enteroscopy procedure, ERCP (endoscopic Retrograde cholangiopancreatography) procedures are performed on a patient's area of common bile duct stenosis between the duodenum and bile duct.

In the related technology, when endoscopic retrograde cholangiopancreatography is performed, a guide wire is needed to assist in conveying a cutting knife to a bile duct or a pancreatic duct in a patient body for the next operation; wherein the incision knife is used for driving contrast medium. During the imaging process, the guide wire needs to pass through some narrow segment of the bile duct or pancreatic duct, and we need to know the length of the narrow segment. The existing guide wire is thin in thickness, scales are difficult to be arranged on the surface of the guide wire, and the length of the guide wire conveyed into a patient cannot be directly read. The conventional workflow is to roughly estimate the length of the stenosis during the guidewire delivery. The conventional work flow cannot accurately measure the length of a narrow section of a bile duct or a pancreatic duct, and errors are easily caused in the customization of the common bile duct stent based on the length of the narrow section, and the like.

Accordingly, there is a need in the art to devise a device that can accurately measure the length of a stenosis by means of a guidewire to address the above-mentioned problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a guide wire marking device for ERCP, which realizes semi-automatic marking of a guide wire and solves the problem that the length of a narrow section of a bile duct or a pancreatic duct is difficult to accurately measure when the patient is examined in the existing endoscopic retrograde cholangiopancreatography.

In order to achieve the above purposes, the technical scheme is as follows: a guide wire marking device for ERCP comprises a device body for drawing a guide wire, and a short connecting pipe as a guide wire inlet, wherein the short connecting pipe is vertically arranged on the surface of the device body; the bottom of device main part sets up the seal wire export, seal wire marking device still includes:

the fixing device is sleeved and fixed at the top end of the short connecting pipe, the fixing device is provided with a central hole for the guide wire to pass through, the side wall of the fixing device is provided with a horizontal long-strip cavity, and the straight line of the long-strip cavity is intersected with the axis of the short connecting pipe;

a marking assembly comprising a pusher, a reservoir, and a first marking tip; the liquid storage pipe is internally provided with marking liquid and is arranged in the long-strip cavity; the push piece, the liquid storage tube and the first marking nozzle form an injector structure; one end of the pushing piece is positioned on the outer side of the side wall of the fixing device, and a liquid outlet of the first marking nozzle is positioned on the inner side of the side wall of the fixing device; when the bottom end of the guide wire reaches the lower end of the narrow section and the upper end of the narrow section of the bile duct or the pancreatic duct of the patient through the fixing device, the short connecting pipe and the device main body, the injector structure is used for marking the guide wire through the marking liquid.

On the basis of the technical scheme, the marking assembly further comprises a sliding frame, the fixing device is further provided with a sliding groove, the sliding groove is communicated with the top surface of the long-strip cavity, the top end of the sliding frame is slidably installed in the sliding groove, and the bottom end of the sliding frame is fixed on the liquid storage pipe.

On the basis of the technical scheme, a placing cavity is further formed in the side wall of the fixing device; the guidewire marking device also includes an auxiliary component, the auxiliary component including:

the liquid storage tank is internally provided with marking liquid and is arranged on the top surface in the placing cavity;

a liquid outlet of the second marking nozzle is positioned on the inner side of the side wall of the fixing device, the second marking nozzle is arranged symmetrically to the first marking nozzle, and the guide wire is positioned between the first marking nozzle and the second marking nozzle;

one end of the transfusion tube is connected with the second marking nozzle, and the other end of the transfusion tube extends into the placing cavity;

and the liquid injection part is vertically communicated with the upper surface of the part, extending into the placing cavity, of the infusion tube, and the structure of the liquid injection part is configured to communicate the liquid storage tank with the second marking nozzle when the guide wire is marked through the second marking nozzle.

On the basis of the technical scheme, the auxiliary assembly further comprises a placing box and a liquid inlet pipe, and the placing box is fixed on the bottom surface in the placing cavity; two ports of the liquid inlet pipe are respectively fixed on the bottom wall of the liquid storage tank and the top wall of the placing box;

the placing box is in a rectangular shell shape, one end of the placing box is provided with an opening, one end of the infusion tube penetrates through the opening to be connected with the second marking nozzle, and the other end of the infusion tube is slidably arranged in the placing box; the bottom port of the liquid inlet pipe can be communicated with the infusion pipe in an opening and closing mode through the liquid injection part.

On the basis of the technical scheme, the auxiliary assembly further comprises a sliding assembly, the sliding assembly comprises a sliding seat and a sliding groove, the sliding groove is formed in the bottom of the placing box, the top end of the sliding seat is supported and fixed on the infusion tube, and the bottom end of the sliding seat is slidably arranged in the sliding groove.

On the basis of the technical scheme, the liquid injection piece comprises a funnel pipe and a sealing plate, the funnel pipe is vertically arranged, and the bottom end of the funnel pipe is communicated with the liquid conveying pipe; the sealing plate is fixed on the side end surface of the funnel tube and is tightly attached to the inner surface of the top of the placing box;

when the infusion tube slides and drives the funnel tube to align to the bottom port of the liquid inlet tube, the marking liquid in the liquid storage box flows to the second marking nozzle through the funnel tube and the infusion tube.

On the basis of the technical scheme, the fixing device comprises a fixing ring, a connecting rod, a connecting ring and a positioning ring; the fixing ring, the connecting ring and the positioning ring are coaxially arranged, the positioning ring is fixedly arranged in the connecting ring, and the connecting ring is fixedly arranged on the fixing ring at intervals; and two ends of the connecting rod are respectively fixed on the side end faces of the connecting ring and the fixing ring;

the first marking nozzle and the second marking nozzle are arranged on the inner side of the positioning ring; the fixing ring is formed by combining two semicircular lantern rings.

On the basis of the technical scheme, the gap between the second marking nozzle and the first marking nozzle is larger than the diameter of the guide wire; the second marking nozzle and the first marking nozzle both comprise a plurality of liquid outlets.

The application also discloses a measuring method based on the guide wire marking device, which comprises the following steps:

the guide wire penetrates into the device main body through the fixing device and is conveyed into the body of a patient through a guide wire outlet at the bottom end of the device main body; until the bottom end of the guide wire reaches the lower end of the narrow section of the bile duct or the pancreatic duct;

the pushing piece pushes the liquid storage pipe, and the marking liquid of the liquid storage pipe leaves a first mark on the surface of the guide wire through the first marking nozzle;

the guide wire is continuously conveyed into the body of the patient until the bottom end of the guide wire reaches the upper end of the narrow section of the bile duct or the pancreatic duct;

the pushing piece pushes the liquid storage pipe, and the marking liquid of the liquid storage pipe leaves a second mark on the surface of the guide wire through the first marking nozzle; the guide wire is withdrawn from the patient and the distance between the first marker and the second marker is measured with an additional measuring device.

On the basis of the technical scheme, the marking assembly further comprises a sliding frame, the fixing device is further provided with a sliding groove, the sliding groove is communicated with the top surface of the long-strip cavity, the top end of the sliding frame can be slidably arranged in the sliding groove, and the bottom end of the sliding frame is fixed on the liquid storage pipe; the fixing device is also provided with a placing cavity; the guide wire marking device further comprises an auxiliary assembly, wherein the auxiliary assembly comprises a liquid storage tank, an infusion tube, an infusion part and a second marking nozzle; the liquid storage tank is internally used for containing marking liquid and is arranged on the top surface of the placing cavity; a liquid outlet of the second marking nozzle is positioned on the inner side of the side wall of the fixing device, the second marking nozzle is arranged symmetrically to the first marking nozzle, and the guide wire is positioned between the first marking nozzle and the second marking nozzle; the liquid injection part is vertically communicated with the upper surface of the part of the infusion tube extending into the placing cavity; the liquid storage tank is connected with the infusion tube through the liquid injection piece in an openable and closable manner;

the pushing piece pushes the liquid storage pipe, the marking liquid of the liquid storage pipe leaves a first mark or a second mark on the surface of the guide wire through a first marking nozzle, and the pushing piece comprises:

the pushing part pushes the liquid storage pipe, the liquid storage pipe and the first marking nozzle slide along with the sliding frame to push the guide wire, the guide wire pushes the second marking nozzle and the infusion tube, the liquid injection part is communicated with the liquid storage tank and the infusion tube, and the first marking nozzle and the second marking nozzle respectively flow out marking liquid to mark the guide wire.

The technical scheme who provides this application brings beneficial effect includes:

according to the guide wire marking device, the marking assembly comprises a pushing piece, a liquid storage pipe and a first marking nozzle, marking liquid is contained in the liquid storage pipe, and the pushing piece, the liquid storage pipe and the first marking nozzle form an injector structure; when the pushing piece pushes the liquid storage pipe, the marking liquid in the liquid storage pipe flows out from the first marking nozzle to mark the guide wire. In the practical use process of the guide wire marking device, the guide wire penetrates into the device body through the fixing device and is conveyed into a patient body, when the bottom end of the guide wire reaches the lower end and the upper end of the narrow section of the bile duct or the pancreatic duct of the patient, the pushing piece is pushed, liquid in the liquid storage tube flows out from the first marking nozzle to mark the guide wire, and the first mark (corresponding to the lower end of the narrow section of the bile duct or the pancreatic duct) and the second mark (corresponding to the upper end of the narrow section of the bile duct or the pancreatic duct) are reserved in sequence. Thereafter, the guide wire is taken out of the patient, the guide wire is pulled upward from the fixing device, and the distance between the first mark and the second mark is measured by any measuring device. The utility model provides a seal wire marking device has realized the semi-automatization mark to the seal wire, can convenient and fast obtain the length between the first mark and the second mark of seal wire after the mark, has solved the length of the narrow section of bile duct or pancreatic duct when current through scope retrograde cholangiopancreatography inspects the patient and has been difficult to carry out accurate measuring problem, measures convenient, swift and efficient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a guidewire marking device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a fixing device according to an embodiment of the present disclosure;

FIG. 3 is a partial enlarged view A of FIG. 2;

FIG. 4 is an enlarged view of the carriage and the liquid storage tube in FIG. A;

FIG. 5 is an enlarged view F of FIG. 4;

fig. 6 is a perspective view of a fixing device provided in an embodiment of the present application;

FIG. 7 is a partial enlarged view B of FIG. 2;

FIG. 8 is a partial enlarged view C of FIG. 7;

reference numerals: 1. a device main body; 2. a short connecting pipe; 3. a fixing device; 31. a fixing ring; 32. a connecting rod; 33. a connecting ring; 34. a positioning ring; 4. a marking component; 41. a cavity; 42. a chute; 43. a carriage; 44. a liquid storage pipe; 45. a liquid outlet pipe; 46. a first marking nozzle; 47. a pusher member; 5. an auxiliary component; 51. a placement chamber; 52. placing a box; 53. a transfusion tube; 54. a water outlet pipe; 55. a second marking nozzle; 56. injecting liquid; 561. a funnel tube; 562. a sealing plate; 57. a liquid inlet pipe; 58. a liquid storage tank; 7. a sliding assembly; 71. a sliding groove; 72. a sliding seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the present application discloses an embodiment of a guide wire marking device for ERCP, which comprises a device body 1 and a junction pipe 2, wherein the device body 1 is hollow inside and can be used for accommodating a guide wire and also used for drawing the guide wire so that the guide wire enters a patient body. The connecting short pipe 2 is vertically arranged on the surface of the device main body 1, and the connecting short pipe 2 is used as an inlet of the guide wire; the bottom end of the device main body 1 is provided with an outlet of the guide wire. The conventional method for ERCP detection mainly structurally comprises a device main body 1 and a short connecting pipe 2, wherein a guide wire is input from the short connecting pipe 2 and output from the bottom end of the device main body 1.

The utility model provides a seal wire marking device, on the basis of original structure, has newly-increased fixing device 3 and mark subassembly 4. The fixing device 3 is sleeved and fixed at the top end of the short connecting pipe 2, and the fixing device 3 is provided with a central hole for the guide wire to pass through, and the central hole is coaxial with the axis of the short connecting pipe 2. The side wall of the fixing device 3 is provided with a horizontal long cavity 41, and the straight line of the long cavity 41 intersects with the axis of the connecting short pipe 2, i.e. the long cavity 41 is arranged along the radial direction of the fixing device 3.

As shown in fig. 3, the marking assembly 4 includes a pushing member 47, a reservoir 44 and a first marking nozzle 46, wherein the reservoir 44 contains a marking liquid for marking the guide wire for subsequent length measurement. The liquid storage pipe 44 is arranged in the long strip cavity 41; the pusher 47, reservoir 44 and first marking nozzle 46 form a syringe structure. When the pushing member 47 is pushed toward the axis of the fixture 3, the marking liquid in the reservoir 44 flows out from the first marking nozzle 46 to mark the guide wire. One end of the pushing member 47 is located outside the sidewall of the fixing device 3 for facilitating pushing by external force. The exit opening of the first marking tip 46 is located inside the side wall of the fixture 3 to facilitate marking of the guide wire. The bottom end of the guide wire penetrates into the patient body through the fixing device 3, the short connecting pipe 2 and the device main body 1, when the bottom end of the guide wire reaches the lower end of a narrow section and the upper end of the narrow section of a bile duct or a pancreatic duct of the patient, the guide wire is marked by the injector structure through marking liquid, and the length of the guide wire between two times of marking reflects the length of the narrow section.

Specifically, one end of the pushing member 47 is provided with a piston, the piston is installed into the reservoir 44, and the other end of the pushing member 47 penetrates through the side wall of the fixing device 3 to protrude outward. A first marking nozzle 46 is connected to the other end of the reservoir 44 via an outlet tube 45. In the process of actually using the guide wire marking device, the guide wire penetrates into the device main body 1 through the fixing device 3 and is conveyed into a patient body, when the bottom end of the guide wire reaches the lower end of the narrow section of the bile duct or the pancreatic duct and the upper end of the lower end of the narrow section, the pushing piece 47 is pushed twice, liquid in the liquid storage tube 44 flows out from the first marking nozzle 46 to mark the guide wire, and a first mark (corresponding to the lower end of the narrow section of the bile duct or the pancreatic duct) and a second mark (corresponding to the upper end of the narrow section of the bile duct or the pancreatic duct) are reserved successively. Then, the guide wire is taken out of the patient, the guide wire is pulled out upward from the fixing device 3, and the distance between the first mark and the second mark is measured by any measuring device.

The utility model provides a seal wire marking device has realized the semi-automatization mark to the seal wire, can convenient and fast obtain the length of the narrow section of bile duct or pancreatic duct after the mark, has solved current through the problem that the length of the narrow section of bile duct or pancreatic duct is difficult to carry out accurate measurement when the patient is examined to the pancreas cholangiography of endoscope retrograde motion, measures convenient, swift and efficient.

It is worth to be noted that when the pancreaticobiliary tract is retrogradely imaged by endoscope, the patient stoma is below the pancreaticobiliary tract, and the guide wire is conveyed from bottom to top. The first marker corresponds to the lower end of the narrowed segment of the bile or pancreatic duct, and the second marker corresponds to the upper end of the narrowed segment of the bile or pancreatic duct.

As shown in fig. 4 and 5, in one embodiment, the marking assembly 4 further comprises a sliding frame 43, the fixing device 3 further comprises a sliding slot 42, the sliding slot 42 is located on the top surface of the elongated cavity 41, the sliding frame 43 is slidably mounted in the sliding slot 42 at the top end thereof, and the bottom end thereof is fixed to the liquid storage tube 44.

The utility model provides a mark subassembly 4, when promoting impeller 47, not only the piston of impeller 47 tip removes in stock solution pipe 44, stock solution pipe 44 itself still moves along spout 42 under the effect of carriage 43 simultaneously for first mark mouth 46 can move inwards, during the mark, first mark mouth 46 tightly supports the surface of holding at the seal wire, further eliminated the clearance that probably exists between seal wire and the first mark mouth 46, the mark is more accurate, make follow-up seal wire length measurement more accurate.

As shown in fig. 7 and 8, in one embodiment, the fixture 3 is further provided with a placement cavity 51. The guide wire marking device also comprises an auxiliary component 5, wherein the auxiliary component 5 comprises a liquid storage tank 58, an infusion tube 53, an infusion part 56 and a second marking nozzle 55; the liquid storage tank 58 accommodates the marker liquid therein, and the liquid storage tank 58 is provided on the inner top surface of the placement chamber 51. The liquid outlet of the second marking nozzle 55 is located inside the sidewall of the fixing device 3, and the second marking nozzle 55 is arranged symmetrically to the first marking nozzle 46, and the guide wire is located between the first marking nozzle 46 and the second marking nozzle 55.

One end of the transfusion tube 53 is connected to the second marking nozzle 55, and the other end thereof extends into the placing cavity 51. The part of the infusion tube 53 extending into the placing cavity 51 is positioned on the bottom surface of the placing cavity 51. The infusion part 56 is vertically communicated with the upper surface of the part of the infusion tube 53 extending into the placing cavity 51. The priming member 56 is structured to communicate the reservoir 58 with the second marking nozzle 55 when marking the guidewire through the second marking nozzle 55. The reservoir 58 is openably and closably connected to the infusion tube 53 via the infusion member 56, that is, the infusion member 56 can connect and disconnect the reservoir 58 and the infusion tube 53. When the marking is stopped, the priming member 56 disconnects the reservoir 58 from the second marking nozzle 55.

In the initial state, the liquid storage tank 58 and the infusion tube 53 are in a disconnected state; when the pushing member 47 pushes the first marking nozzle 46 to mark the guide wire, the first marking nozzle 46 pushes the guide wire, the guide wire pushes the second marking nozzle 55, so that the infusion tube 53 slides, and the injection member 56 communicates the liquid storage tank 58 with the second marking nozzle 55. The marking fluid in the reservoir 58 flows through the fluid line 53 to the second marking nozzle 55, and the first marking nozzle 46 and the second marking nozzle 55 mark the guide wire from both sides thereof. The guide wire marking device has the advantages that the first marking nozzle 46 and the second marking nozzle 55 are symmetrically arranged, and the guide wire is positioned between the first marking nozzle 46 and the second marking nozzle 55, so that marking work can be clearer, more accurate and more reliable.

As shown in fig. 7, the auxiliary assembly 5 further comprises a placing box 52 and a liquid inlet pipe 57, wherein the placing box 52 is fixed on the inner bottom surface of the placing cavity 51; two ports of the liquid inlet pipe 57 are fixed to the bottom wall of the liquid storage tank 58 and the top wall of the placing box 52, respectively. When the liquid inlet pipe 57 is allowed to flow, the marking liquid in the liquid storage tank 58 can naturally flow downward.

The placing box 52 is in a rectangular shell shape, one end of the placing box is provided with an opening, one end of the infusion tube 53 passes through the opening and is connected with the second marking nozzle 55, and the other end of the infusion tube is slidably arranged in the placing box 52; the infusion tube 53 can be extended and contracted along the radial direction of the fixing device 3, and the bottom port of the liquid inlet tube 57 can be communicated with the infusion tube 53 through the liquid injection piece 56 in an opening and closing manner. When the infusion tube 53 reaches a specific position during the telescopic sliding movement, the liquid injection member 56 communicates the liquid inlet tube 57 and the infusion tube 53.

As shown in fig. 8, the auxiliary unit 5 further includes a slide unit 7, the slide unit 7 includes a slide base 72 and a slide groove 71, the slide groove 71 is opened at the bottom of the placement box 52, the top end of the slide base 72 is supported and fixed to the infusion tube 53, and the bottom end thereof is slidably disposed in the slide groove 71. The sliding component 7 facilitates the telescopic sliding of the infusion tube 53.

In one embodiment, the injection member 56 comprises a funnel tube 561 and a sealing plate 562, wherein the funnel tube 561 is vertically arranged, and the bottom end thereof is communicated with the infusion tube 53; the sealing plate 562 is fixed to the side end surface of the funnel tube 561 and abuts against the top inner surface of the placing box 52. In a conventional state, the sealing plate 562 seals the bottom port of the liquid inlet pipe 57; when the infusion tube 53 slides and drives the funnel tube 561 to align with the bottom port of the liquid inlet tube 57, the marking liquid in the liquid storage tank 58 flows to the second marking nozzle 55 through the funnel tube 561 and the infusion tube 53. The guide wire marking device has the advantages that the liquid injection piece 56 is ingenious in design, the liquid storage tank 58 and the second marking nozzle 55 can be controlled to be communicated and disconnected, and the purpose of marking the guide wire on two sides is achieved.

Preferably, the marking assembly 4 and the auxiliary assembly 5 each comprise a return spring, and after a marking is completed, the marking assembly 4 and the auxiliary assembly 5 each return to the initial position (i.e., the position shown in fig. 3 and 7). Specifically, the return spring of the marker module 4 is disposed on the side end surface of the reservoir 44, and when the return spring is in a natural state, the reservoir 44 is in a state shown in fig. 4; after a marking operation is performed, the return spring returns the reservoir 44 to the state shown in fig. 4. The return spring of the auxiliary unit 5 is provided between the side end surface of the infusion tube 53 and the inner wall of the cassette, and when the return spring is in a natural state, the infusion tube 53 is in a state shown in fig. 8.

As shown in fig. 6, in one embodiment, the fixing device 3 includes a fixing ring 31, a connecting rod 32, a connecting ring 33, and a positioning ring 34; the fixing ring 31, the connecting ring 33 and the positioning ring 34 are coaxially arranged, and the thicknesses of the fixing ring 31, the connecting ring 33 and the positioning ring 34 are equal. The outer diameters of the fixing ring 31 and the connecting ring 33 are equal and are both larger than the outer diameter of the positioning ring 34. The positioning ring 34 is fixedly mounted in the connecting ring 33 by means of two filler blocks.

The connecting ring 33 is fixed on the fixing ring 31 at intervals, and the connecting ring 33 and the fixing ring 31 are spaced at a certain interval from top to bottom. Both ends of the connecting rod 32 are fixed to side end faces of the connecting ring 33 and the fixing ring 31, respectively. First marking tip 46 and second marking tip 55 are both disposed inside positioning ring 34; the fixing ring 31 is formed by combining two semicircular lantern rings, the two semicircular lantern rings of the fixing ring 31 are fixed through threaded connection, and the short connecting pipe is sleeved and fixed. The positioning ring 34 is fixedly mounted in the connection ring 33 by means of two symmetrically arranged filling blocks, where the marker assembly 4 and the supplementary assembly 5 are located exactly.

Specifically, the outer side surfaces of the fixing ring 31 and the connection ring 33 are respectively provided with a connection block, and the connection rod 32 is vertically arranged between the two connection blocks.

Further, the gap between the second marking tip 55 and the first marking tip 46 is larger than the diameter of the guide wire, so that the guide wire can be conveniently threaded. The second marking nozzle 55 and the first marking nozzle 46 each include a plurality of liquid outlets. The plurality of liquid outlets can make the mark more even.

The application also discloses an embodiment of a measuring method based on the guide wire marking device, which comprises the following steps:

the guide wire penetrates into the device main body 1 through the fixing device 3 and is conveyed into the body of a patient through a guide wire outlet at the bottom end of the device main body 1 until the bottom end of the guide wire reaches the lower end of a narrow section of a bile duct or a pancreatic duct;

the pushing piece 47 pushes the liquid storage tube 44, and the marking liquid of the liquid storage tube 44 leaves a first mark on the surface of the guide wire through the first marking nozzle 46;

the pushing piece 47 pushes the liquid storage pipe 44, and the marking liquid of the liquid storage pipe 44 leaves a second mark on the surface of the guide wire through the first marking nozzle 46; the guide wire is withdrawn from the patient and the distance between the first marker and the second marker is measured with an additional measuring device.

The additional measuring device may be a measuring tool such as a tape measure.

Specifically, the guide wire is withdrawn from the patient, and the guide wire may be withdrawn upward from the fixing device 3, and the distance between the first marker and the second marker, that is, the length of the narrowed segment of the bile duct or the pancreatic duct, is measured by any measuring device.

In one embodiment, the marking assembly 4 further comprises a sliding frame 43, the fixing device 3 further comprises a sliding slot 42, the sliding slot 42 is located on the top surface of the elongated cavity 41, the top end of the sliding frame 43 is slidably mounted in the sliding slot 42, and the bottom end thereof is fixed to the liquid storage tube 44; the fixing device 3 is also provided with a placing cavity 51; the guide wire marking device also comprises an auxiliary component 5, wherein the auxiliary component 5 comprises a liquid storage tank 58, an infusion tube 53, an infusion part 56 and a second marking nozzle 55; the liquid storage tank 58 contains marking liquid, and the liquid storage tank 58 is arranged on the top surface of the placing cavity 51; a liquid outlet of the second marking nozzle 55 is positioned on the inner side of the side wall of the fixing device 3, the second marking nozzle 55 is arranged symmetrically to the first marking nozzle 46, and the guide wire is positioned between the first marking nozzle 46 and the second marking nozzle 55; the liquid injection piece 56 is vertically communicated with the upper surface of the part of the transfusion tube 53 extending into the placing cavity 51; the liquid storage tank 58 can be connected to the infusion tube 53 through the liquid injection piece 56 in an opening and closing manner;

the pushing member 47 pushes the reservoir 44, and the marking liquid in the reservoir 44 leaves a first mark or a second mark on the surface of the guide wire through the first marking nozzle 46, including:

the pushing part 47 pushes the liquid storage pipe 44, the liquid storage pipe 44 and the first marking nozzle 46 slide along with the sliding frame 43 to push the guide wire, the guide wire pushes the second marking nozzle 55 and the infusion tube 53, the liquid injection part 56 is communicated with the liquid storage tank 58 and the infusion tube 53, and the first marking nozzle 46 and the second marking nozzle 55 respectively flow out marking liquid to mark the guide wire.

The working principle of the guide wire marking device and the guide wire length measuring method for the ERCP provided by the invention is as follows:

in the use process, the guide wire passes through the positioning ring 34, penetrates into the device main body 1 through the short connecting pipe 2, then penetrates out of the guide wire outlet at the bottom end of the device main body 1, and is conveyed to the body of a patient, and when the bottom end of the guide wire reaches the lower end of the narrow section and the upper end of the narrow section of the bile duct or pancreatic duct of the patient, the guide wire is marked twice respectively.

Marking method in particular, the pusher 47, reservoir 44 and first marking nozzle 46 form a syringe structure. The operator first pushes the pushing member 47 to move towards the interior of the reservoir 44; when the pushing piece 47 moves towards the interior of the liquid storage tube 44, the liquid in the liquid storage tube 44 is pushed to be conveyed to the first marking nozzle 46 through the liquid outlet tube 45; when the liquid is conveyed to the inside of the first marking nozzle 46, the liquid storage pipe 44 moves along the sliding groove 42 under the action of the sliding frame 43, the first marking nozzle 46 abuts against the guide wire, and the marking liquid marks the guide wire, so that subsequent measurement is facilitated.

Meanwhile, the guide wire is also contacted with the auxiliary component 5, the guide wire pushes the second marking nozzle 55 to drive the infusion tube 53 with the infusion piece 56 to move towards the interior of the placing box 52; the infusion tube 53 and the liquid inlet tube 57 are communicated with the infusion member 56, the marking liquid in the liquid storage tank 58 flows to the second marking nozzle 55, and the guide wire is clamped between the first marking nozzle 46 and the second marking nozzle 55 to mark the guide wire. After marking, the guide wire length of the first mark and the guide wire length of the second mark can be conveniently and quickly measured, and the length of the narrow section can be directly obtained.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guide wire marking device for ERCP comprises a device body (1) for drawing a guide wire, and a short connecting pipe (2) as a guide wire inlet, wherein the short connecting pipe (2) is vertically arranged on the surface of the device body (1); the bottom of device main part (1) sets up the seal wire export, its characterized in that, seal wire mark device still includes:

the fixing device (3) is sleeved and fixed at the top end of the short connecting pipe (2), the fixing device (3) is provided with a central hole for the guide wire to pass through, the side wall of the fixing device (3) is provided with a horizontal strip-shaped cavity (41), and the straight line of the strip-shaped cavity (41) is intersected with the axis of the short connecting pipe (2);

a marking assembly (4) comprising a pusher (47), a reservoir (44) and a first marking nozzle (46); the liquid storage tube (44) contains marking liquid, and the liquid storage tube (44) is arranged in the long-strip cavity (41); the pusher (47), reservoir (44) and first marker nozzle (46) form a syringe structure; one end of the pushing piece (47) is positioned on the outer side of the side wall of the fixing device (3), and the liquid outlet of the first marking nozzle (46) is positioned on the inner side of the side wall of the fixing device (3); when the bottom end of the guide wire reaches the lower end and the upper end of the narrow section of the bile duct or the pancreatic duct of a patient through the fixing device (3), the short connecting pipe (2) and the device main body (1), the injector structure is used for marking the guide wire through the marking liquid.

2. A guidewire marking device for ERCP as in claim 1 wherein: the marking assembly (4) further comprises a sliding frame (43), the fixing device (3) is further provided with a sliding groove (42), the sliding groove (42) is communicated with the top surface of the long-strip cavity (41), the top end of the sliding frame (43) is slidably arranged in the sliding groove (42), and the bottom end of the sliding frame is fixed on the liquid storage pipe (44).

3. A guide wire marking device for ERCP as defined in claim 2 wherein the side wall of said fixation means (3) is further provided with a placement lumen (51); the guidewire marking device further comprises an auxiliary component (5), the auxiliary component (5) comprising:

the liquid storage tank (58) contains marking liquid, and the liquid storage tank (58) is arranged on the inner top surface of the placing cavity (51);

a liquid outlet of the second marking nozzle (55) is positioned on the inner side of the side wall of the fixing device (3), the second marking nozzle (55) is arranged symmetrically to the first marking nozzle (46), and the guide wire is positioned between the first marking nozzle (46) and the second marking nozzle (55);

an infusion tube (53) with one end connected to the second marking nozzle (55) and the other end extending into the placing cavity (51);

and the liquid injection piece (56) is vertically communicated with the upper surface of the part, extending into the placing cavity (51), of the liquid injection pipe (53), and the structure of the liquid injection piece (56) is configured to communicate the liquid storage tank (58) with the second marking nozzle (55) when the guide wire is marked through the second marking nozzle (55).

4. A guidewire marking device for ERCP as in claim 3 wherein: the auxiliary assembly (5) further comprises a placing box (52) and a liquid inlet pipe (57), and the placing box (52) is fixed on the inner bottom surface of the placing cavity (51); two ports of the liquid inlet pipe (57) are respectively fixed on the bottom wall of the liquid storage tank (58) and the top wall of the placing box (52);

the placing box (52) is in a rectangular shell shape, one end of the placing box is provided with an opening, one end of the infusion tube (53) penetrates through the opening to be connected with the second marking nozzle (55), and the other end of the infusion tube is slidably arranged in the placing box (52); the bottom port of the liquid inlet pipe (57) can be communicated with the liquid conveying pipe (53) in an opening and closing way through a liquid injection piece (56).

5. A guidewire marking device for ERCP as in claim 4 wherein: the auxiliary assembly (5) further comprises a sliding assembly (7), the sliding assembly (7) comprises a sliding seat (72) and a sliding groove (71), the sliding groove (71) is arranged at the bottom of the placement box (52), the top end of the sliding seat (72) is supported and fixed on the infusion tube (53), and the bottom end of the sliding seat can be slidably arranged in the sliding groove (71).

6. A guidewire marking device for an ERCP as defined in claim 4, wherein: the liquid injection piece (56) comprises a funnel pipe (561) and a sealing plate (562), the funnel pipe (561) is vertically arranged, and the bottom end of the funnel pipe is communicated with the liquid conveying pipe (53); the sealing plate (562) is fixed on the side end face of the funnel tube (561) and clings to the inner surface of the top of the placing box (52);

when the infusion tube (53) slides and drives the funnel tube (561) to align with the bottom port of the liquid inlet tube (57), the marking liquid in the liquid storage tank (58) flows to the second marking nozzle (55) through the funnel tube (561) and the infusion tube (53).

7. A guidewire marking device for ERCP as in claim 3 wherein: the fixing device (3) comprises a fixing ring (31), a connecting rod (32), a connecting ring (33) and a positioning ring (34); the fixing ring (31), the connecting ring (33) and the positioning ring (34) are coaxially arranged, the positioning ring (34) is fixedly arranged in the connecting ring (33), and the connecting ring (33) is fixedly arranged on the fixing ring (31) at intervals; two ends of the connecting rod (32) are respectively fixed on the side end surfaces of the connecting ring (33) and the fixing ring (31);

the first marking nozzle (46) and the second marking nozzle (55) are arranged on the inner side of the positioning ring (34); the fixing ring (31) is formed by combining two semicircular lantern rings.

8. A guidewire marking device for ERCP as in claim 3 wherein: the gap between the second marking tip (55) and the first marking tip (46) is larger than the diameter of the guide wire; the second marking nozzle (55) and the first marking nozzle (46) both comprise a plurality of liquid outlets.