Special cleaning device for residual bile duct calculi, mucus and floccules after ERCP operation

Abstract

The utility model discloses a special cleaning device for residual bile duct stones, mucus and floccules after an ERCP (endoscopic retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde cholangiopulmonary retrograde In order to solve the problems that in the prior art, due to the fact that an air bag is arranged, certain harm is caused to a patient when the air bag is withdrawn from the body of the patient, the air bag expansion operation depends on experience of medical staff, and due to the fact that a structure for cleaning mucus in the biliary tract is arranged, the mucus cannot be correspondingly cleaned during calculus removal, by arranging an outer tube, a piston structure and a cleaning structure, calculus removal can be achieved; according to the technical means formed by the multiple technical characteristics, the effects that the cleaning effect is improved while secondary injury to a patient is avoided, and operation does not need to be conducted excessively depending on the experience of doctors and patients are achieved, and the problems existing in the background technology are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a cleaning device specially used for residual bile duct stones, mucus and floccules after ERCP surgery. Background Art

[0002] Clinical data statistics show that the recurrence rate of stones after ERCP in patients with common bile duct stones is 4%-24%. Current researchers believe that gallstone recurrence is related to factors such as common bile duct diameter, common bile duct dilatation, cystic duct dilatation, and concurrent bile duct or pancreatic inflammation. They believe that limited normal bile duct motility, slow bile flow, or poor drainage may deposit formed elements in the bile and cause stones. After ERCP stone removal, balloon compression angiography indicates that the patient's bile duct stones have been completely cleared. However, when SpyGlass is inserted into the bile duct for observation, a large amount of residual muddy stones or flocs can still be observed under direct vision. The residual bile duct stones and inflammatory flocs of the bile duct wall will gradually be wrapped by crystalline metabolites such as bile pigments to gradually form stones, requiring a second surgery to remove them.

[0003] The Chinese invention patent application "A choledochoscope-assisted balloon-type biliary lithotripter" with publication number CN110179523A includes an outer cannula, an inner sheath, an air bag, an inflation interface, a flushing interface, a combination ring and a push guide wire. The air bag is arranged outside the front end wall of the outer cannula; the inner sheath is a hollow tube and is placed in the inner cavity of the outer cannula. This biliary lithotripter can enter the bile duct with the direct assistance of an existing choledochoscope, clearly identify and pass the location of the stone to reach the distal end of the stone, and close the inner cavity of the bile duct at the stone end through moderate expansion of the air bag. Then, under the visual guidance of the choledochoscope, the lithotripter is slowly withdrawn until the air bag and the combination ring clamp and fix the stone, and then the lithotripter and the choledochoscope are withdrawn together, thereby successfully removing the stone.

[0004] However, in the process of stone extraction, the following problems are still difficult to solve:

[0005] (1) The above-mentioned lithotripter first clamps and fixes the stones in the bile duct through the air bag and the combination ring, and then slowly withdraws it from the patient's body, thereby successfully removing the stones; because the air bag and the combination ring that clamp the stones constitute an overall structure of fixed volume, when withdrawing from the patient's body, the diameter of the channel through which it passes will change. When encountering a narrow channel, it will cause certain harm to the patient.

[0006] (2) The above-mentioned lithotripter requires the air bag to be inflated so that the air bag expands and then closes the bile duct cavity. Therefore, when operating the air bag expansion, medical staff need to determine the degree of air bag expansion based on their own experience, thereby increasing the difficulty of the surgical operation and making it difficult for less experienced medical staff to perform the operation well.

[0007] (3) The above-mentioned lithotripter is not provided with a structure for cleaning the biliary mucus, so when removing the stones, the mucus cannot be cleaned accordingly at the same time.

[0008] Therefore, there is an urgent need to design a cleaning device specifically for residual bile duct stones, mucus and floccules after ERCP surgery to solve the above problems, increase the speed of tissue suturing in the body, and alleviate the pain of patients. Utility Model Content

[0009] In view of the problems that the above-mentioned existing lithotripters, when in use, will cause certain harm to the patient because they constitute an overall structure of fixed volume, and the balloon inflation operation is more dependent on the experience of the medical staff themselves, and the structure for cleaning the biliary mucus cannot be used to clean the mucus accordingly when removing the stones, the purpose of the utility model is to provide a cleaning device specially used for residual bile duct stones, mucus and flocs after ERCP surgery, comprising an outer tube, a piston structure and a cleaning structure; the piston structure is movably inserted in the outer tube, the cleaning structure is movably arranged in the outer tube, and is connected to the end of the piston structure, and by pushing the piston structure, the cleaning structure can be driven to extend from the outer tube, and the bile duct stones, mucus and flocs in the bile duct can be cleaned accordingly.

[0010] The core technical idea of ​​the utility model is: inspired by the principle of the syringe, combined with the cleaning operation of residual bile duct stones, mucus and flocs after ERCP, as well as convenient operation and simple structure, the cleaning device in this application is designed, which is composed of an outer tube, a piston structure and a cleaning structure. The device has a simple structure and is easy to operate. It is also easy to store in the later stage, and the cleaning work can be achieved without relying on the medical staff's own experience during the cleaning process.

[0011] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0012] A cleaning device specially used for residual bile duct stones, mucus and floccules after ERCP surgery, characterized in that it includes an outer tube, a piston structure and a cleaning structure, the piston structure is movably inserted in the outer tube, the cleaning structure is movably arranged in the outer tube and connected to the end of the piston structure.

[0013] Preferably, the outer tube includes an outer tube 1 and an outer tube 2 which are connected to each other, and a plurality of rubber protrusions are symmetrically arranged on the inner wall of the outer tube 1, and the rubber protrusions are arranged at equal intervals to match the piston structure.

[0014] Preferably, the piston structure comprises a piston rod, a limiting portion and a pressing portion, the limiting portion and the pressing portion are respectively arranged at two ends of the piston rod, and the limiting portion is adapted to the rubber protrusion.

[0015] Preferably, the cleaning structure comprises a push rod and a cleaning portion, one end of the push rod is connected to the piston structure, and the cleaning portion is arranged at the other end of the push rod.

[0016] Preferably, the push rod is a hollow structure, and a plurality of water outlet holes connected to the inner cavity are opened on the rod wall close to the cleaning part, and the end of the push rod away from the cleaning part is connected to a water pipe, which passes through the piston structure.

[0017] Preferably, a mesh structure is provided at a port of the push rod close to the cleaning portion.

[0018] Preferably, a plurality of arc-shaped protrusions are integrally provided on the surface of the cleaning portion.

[0019] The beneficial effects of the utility model are as follows: the utility model discloses a cleaning device specially used for residual bile duct stones, mucus and floccules after ERCP surgery. Compared with the prior art, the improvements of the utility model are as follows:

[0020] (1) The utility model is designed with an outer tube and a piston structure, and the piston structure and the outer tube cooperate with each other, so that the cleaning structure arranged on the piston structure can be positioned in the bile duct at different positions, and the bile duct at a fixed position can be deeply cleaned without the medical staff having to manually maintain the fixed position all the time, which increases the difficulty of cleaning.

[0021] (2) The utility model is provided with a water outlet on the push rod, which is used to flush the mucus and flocs in the bile duct while cleaning, and then combined with the cleaning part to clean it accordingly, so that the mucus and flocs can be cleaned while cleaning the stones.

[0022] (3) The utility model provides a mesh structure at the end of the push rod near the cleaning part. The mesh structure is provided to reduce the pressure of the water flow coming out of the push rod, thereby preventing excessive water pressure from irritating or even damaging the bile duct. At the same time, the water flow is dispersed after being ejected, which is beneficial to flushing the bile duct wall and wetting the cleaning part faster, making it easier to use.

[0023] (4) The utility model is provided with arc-shaped protrusions on the surface of the cleaning part. Such arrangement does not affect the cleaning part in cleaning the residual bile duct stones, mucus and floccules. At the same time, since there is a gap between every two arc-shaped protrusions, the broken stones can be stuck in the gap when cleaning the stones, so that the cleaning part has a better cleaning effect on the broken stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a perspective view of the cleaning device of the utility model in the main viewing direction;

[0025] Figure 2 It is a perspective view of the cleaning device of the utility model in the use state;

[0026] Figure 3 This is an enlarged view of part A of the utility model;

[0027] Figure 4 This is an enlarged view of part B of the utility model;

[0028] Figure 5 This is the front view of the cleaning part of the utility model;

[0029] Among them: 1. outer tube; 101. outer tube 1; 102. outer tube 2; 103. rubber protrusion; 2. piston structure; 201. piston rod; 202. limiter; 203. pressing part; 3. cleaning structure; 301. push rod; 301-1. water outlet; 301-2. mesh structure; 302. cleaning part; 302-1. arc protrusion; 303. water pipe; DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1:

[0032] Refer to the attached Figure 1-2 The device shown is a cleaning device specially used for residual bile duct stones, mucus and floccules after ERCP, comprising an outer tube 1, a piston structure 2 and a cleaning structure 3. The piston structure 2 is movably inserted in the outer tube 1, and the cleaning structure 3 is movably arranged in the outer tube 1 and connected to the end of the piston structure 2. The piston structure 2 performs piston movement in the outer tube 1, so that the piston structure 2 can drive the cleaning structure 3 to extend out of the outer tube 1 to clean the bile duct accordingly.

[0033] For further information, please refer to the attached Figure 2 As shown, the outer tube 1 includes an outer tube 101 and an outer tube 102 connected to each other, and a plurality of rubber protrusions 103 are symmetrically arranged on the inner wall of the outer tube 101, and the rubber protrusions 103 are arranged at equal intervals and adapted to the piston structure 2; when the piston structure 2 performs piston motion in the outer tube 1, the rubber protrusions 103 can position the piston structure 2, so that the cleaning structure 3 connected to the piston structure 2 is positioned at any fixed position of the bile duct, and then further cleaning operation is performed on the bile duct at the fixed position;

[0034] The piston structure 2 includes a piston rod 201, a limiting portion 202 and a pressing portion 203. The limiting portion 202 and the pressing portion 203 are respectively arranged at both ends of the piston rod 201, and the limiting portion 202 is adapted to the rubber protrusion 103. When pressure is applied to the pressing portion 203, the pressing portion 203 drives the piston rod 201 to move, and the piston rod 201 drives the limiting portion 202 to move. The limiting portion 202 passes through a plurality of rubber protrusions 103. In the process of passing through the rubber protrusions 103, when the limiting portion 202 is engaged between two rubber protrusions 103, the two rubber protrusions 103 limit the limiting portion 202, and then limit the piston structure 2, and finally achieve the limitation in the bile duct of the cleaning structure 3;

[0035] The cleaning structure 3 includes a push rod 301 and a cleaning portion 302. One end of the push rod 301 is connected to the limiting portion 202 in the piston structure 2, and the cleaning portion 302 is arranged at the other end of the push rod 301. Preferably, the cleaning portion 302 is a sponge. The piston structure 2 performs piston movement in the outer tube 1, which can push the push rod 301 to move, thereby making the cleaning portion 302 extend out of the outer tube 1 and clean the stones in the bile duct.

[0036] The use process and principle of the cleaning device of the preferred embodiment are as follows: first, the cleaning structure 3 is placed inside the outer tube 1 through the piston structure 2, and under the visual guidance of the choledochoscope, the lithotripter follows the choledochoscope into the bile duct and reaches the location of the stones in the bile duct, and then pushes the pressing part 203, the pressing part 203 drives the piston rod 201 to move, the piston rod 201 drives the limiting part 202 to move, the limiting part 202 drives the pushing rod 301 to move, the pushing rod 301 drives the cleaning part 302 to extend out of the outer tube 1, the cleaning part 302 expands to support the bile duct wall, and then removes the stones, mucus and floccules on the inner wall of the bile duct. Cleaning. During the cleaning process, under the action of the rubber protrusion 103, the cleaning part 302 can be limited to the part in the bile duct that needs further cleaning through the limiting part 202 and the pushing rod 301, and then the limiting part 202 and the pushing rod 301 are rotated to realize the rotation of the cleaning part 302, so that the cleaning part 302 repeatedly rubs the bile duct wall, thereby achieving deep cleaning. After the cleaning is completed, the piston rod 201 is pulled, and the piston rod 201 drives the limiting part 202, the pushing rod 301 and the cleaning part 302 to withdraw from the patient's body, taking out the stones, mucus and flocs attached to the cleaning part 302, and completing the bile duct cleaning.

[0037] Embodiment 2:

[0038] Refer to the attached Figure 3-4 As shown, the difference between Example 2 and Example 1 is that, based on Example 1, considering that the mucus in the bile duct has a certain viscosity, when it adheres to the surface of the cleaning part 302 during the cleaning process, it will affect the cleaning of stones and floccules in the bile duct by the cleaning part 302, resulting in a poor cleaning effect;

[0039] Therefore, in this embodiment, the push rod 301 is set as a hollow structure, and a plurality of water outlet holes 301-1 connected to the inner cavity are opened on the rod wall close to the cleaning part 302, and the end of the push rod 301 away from the cleaning part 302 is connected to the water pipe 303, and the water pipe 303 passes through the piston structure 2; specifically, the water pipe 303 is connected with the end of the push rod 301 at one end, and the other end passes through the limiting part 202, the piston rod 201, and the pressing part 203 in sequence, and finally extends out of the pressing part 203;

[0040] At the same time, a mesh structure 301-2 is provided at the port of the push rod 301 close to the cleaning part 302. The mesh structure 301-2 can reduce the pressure of the saline solution coming out of the push rod 301 to avoid excessive water pressure irritating or even damaging the bile duct. At the same time, the water flow is dispersed after being ejected, which is beneficial to flushing the bile duct wall and also wets the cleaning part 302 faster, making it easier to use.

[0041] When in use, the water pipe 303 extending out of the pressing part 203 is connected to the water delivery device, and saline with a fixed pressure is input into the water pipe 303 through the water delivery device, so that the saline is sprayed out from the water outlet 301-1 and the end of the push rod 301 through the mesh structure 301-2; during the cleaning process of the cleaning part 302, the water pipe 303 simultaneously injects saline into the bile duct to flush the bile duct and dilute the bile duct mucus, thereby enhancing the cleaning effect of the cleaning part 302 on stones, mucus and flocs in the bile duct.

[0042] Embodiment 3:

[0043] Refer to the attached Figure 5 As shown, the difference between Example 3 and Example 2 is that, based on Example 1, considering that the conventional cylindrical cleaning portion 302 has limited cleaning effect when cleaning stones, mucus and floccules in the bile duct;

[0044] In order to further enhance the cleaning effect of stones, mucus and flocs, a plurality of arc-shaped protrusions 302-1 are integrally provided on the surface of the cleaning portion 302. During the cleaning process of the cleaning portion 302, since there is a gap between every two arc-shaped protrusions 302-1, the gravel can be stuck in the gap, thereby making the cleaning effect of the cleaning portion on the gravel better.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A cleaning device specially used for residual bile duct stones, mucus and floccules after ERCP, characterized by: It comprises an outer tube (1), a piston structure (2) and a cleaning structure (3), wherein the piston structure (2) is movably inserted into the outer tube (1), and the cleaning structure (3) is movably arranged in the outer tube (1) and connected to the end of the piston structure (2).

2. The cleaning device for residual bile duct stones, mucus and floccules after ERCP according to claim 1, characterized in that: The outer tube (1) comprises an outer tube 1 (101) and an outer tube 2 (102) which are connected to each other, and a plurality of rubber protrusions (103) are symmetrically arranged on the inner wall of the outer tube 1 (101), and the rubber protrusions (103) are arranged at equal intervals to match the piston structure (2).

3. The cleaning device for residual bile duct stones, mucus and floccules after ERCP according to claim 2, characterized in that: The piston structure (2) comprises a piston rod (201), a limiting portion (202) and a pressing portion (203); the limiting portion (202) and the pressing portion (203) are respectively arranged at two ends of the piston rod (201), and the limiting portion (202) is adapted to the rubber protrusion (103).

4. The cleaning device for residual bile duct stones, mucus and floccules after ERCP according to claim 1, characterized in that: The cleaning structure (3) comprises a push rod (301) and a cleaning portion (302); one end of the push rod (301) is connected to the piston structure (2), and the cleaning portion (302) is arranged at the other end of the push rod (301).

5. The cleaning device for residual bile duct stones, mucus and floccules after ERCP according to claim 4, characterized in that: The push rod (301) is a hollow structure, and a plurality of water outlet holes (301-1) communicating with the inner cavity are provided on the rod wall close to the cleaning portion (302). One end of the push rod (301) away from the cleaning portion (302) is connected to a water pipe (303), and the water pipe (303) passes through the piston structure (2).

6. The cleaning device for residual bile duct stones, mucus and floccules after ERCP according to claim 4, characterized in that: A mesh structure (301-2) is provided at a port of the push rod (301) close to the cleaning portion (302).

7. The cleaning device for residual bile duct stones, mucus and floccules after ERCP according to claim 4, characterized in that: A plurality of arc-shaped protrusions (302-1) are integrally provided on the surface of the cleaning portion (302).

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