Double-balloon pushing device for calculus incarceration under ERCP

Abstract

The utility model discloses a double-balloon pushing device for calculus incarceration under ERCP, which comprises a rubber inner core, and a zebra guide wire is arranged on the rubber inner core in a penetrating manner; the first balloon is fixedly connected to the front end of the rubber inner core in a sleeving manner; a first channel is further formed in the rubber inner core, a first connecting port is formed in the side wall of the front end of the first channel, and the first connecting port is communicated with the interior of the first balloon; a front-end inner core is integrally arranged at the front end of the rubber inner core; the inner tube is arranged on the rubber inner core in a sliding and sleeving manner; the second balloon is arranged at the front end of the inner tube in a sleeving manner; the inner tube is further provided with a second channel, the side wall of the front end of the second channel is provided with a second connecting port, and the second connecting port is communicated with the interior of the second balloon. An existing calculus removing balloon is improved, a front end inner core with certain hardness is additionally arranged, and a double-balloon front-back clamping mode is adopted, so that incarcerated calculus of a patient can be pushed into the wide position of the upper section of a bile duct again, the calculus can be conveniently fished out by a net basket again, surgical operation is not needed, and pain and economic pressure of the patient are relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of double-balloon pusher for stone impaction under ERCP. BACKGROUND

[0002] Extrahepatic bile duct stone is a kind of common disease and frequently-occurring disease in China, with the continuous development of endoscope technology and the continuous improvement of its accessories, extrahepatic bile duct stone is mostly adopted endoscopic retrograde cholangiopancreatography (ERCP) lithotomy. Compared with traditional open or modern laparoscopic biliary tract exploration lithotomy surgery, ERCP has the advantages of small trauma, high safety factor and rapid recovery. The main consumables for ERCP lithotomy are stone balloon and stone basket, and small stones are often taken out by balloon, and stones with a diameter of more than 1 cm are mostly taken out by basket. In the process of ERCP removing bile duct stones, when the stones fall off from the basket, they are easy to be impacted in the lower segment of common bile duct, and it is difficult to fish again at this time due to the small size of the lower segment of common bile duct, which affects the normal progress of the lithotomy surgery, and only surgical operation can be performed to take out the stones, increasing the pain and economic pressure of the patient. SUMMARY

[0003] The utility model aims at the problem that in the process of ERCP removing bile duct stones, when the stones fall off from the basket, they are easy to be impacted in the lower segment of common bile duct, and it is difficult to fish again at this time due to the small size of the lower segment of common bile duct, which affects the normal progress of the lithotomy surgery, and provides a double-balloon pusher for stone impaction under ERCP.

[0004] A double-balloon pusher for stone impaction under ERCP, comprising

[0005] A rubber inner core, a zebra guide wire is arranged through the rubber inner core;

[0006] A first balloon is fixedly sleeved at the front end of the rubber inner core; a first channel is further arranged on the rubber inner core, and a first connecting port is arranged on the front end side wall of the first channel, and the first connecting port is in communication with the inside of the first balloon;

[0007] A front end inner core is integrally arranged at the front end of the rubber inner core;

[0008] An inner tube is slidably sleeved on the rubber inner core;

[0009] A second balloon is sleeved at the front end of the inner tube; a second channel is further arranged on the inner tube, and a second connecting port is arranged on the front end side wall of the second channel, and the second connecting port is in communication with the inside of the second balloon.

[0010] Further, the diameter of the front end of the front end inner core gradually increases towards the rear end.

[0011] Furthermore, a sheath is slidably disposed on the inner tube, and the sheath is located on the posterior side of the second balloon.

[0012] Furthermore, the inlet ends of the first channel and the second channel are respectively equipped with three-way valves.

[0013] Furthermore, the first balloon has a first fixing rubber at its front and rear ends respectively; the second balloon has a second fixing rubber at its front and rear ends respectively.

[0014] The beneficial effects of this utility model are: by improving the existing stone retrieval balloon, adding a front core with a certain degree of hardness, and using a double balloon clamping method, the patient's impacted stone can be pushed back into the wider part of the upper bile duct, making it easier for the basket to retrieve the stone again, without the need for surgery, thus reducing the patient's pain and economic burden. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of the device;

[0016] Fig. 2 This is a schematic diagram of the internal structure of the device;

[0017] In the diagram, 1-Zebra guidewire, 2-Rubber inner core, 20-Front end inner core, 21-First channel, 3-First balloon, 30-First connection port, 31-First fixing rubber, 4-Inner tube, 41-Second channel, 5-Second balloon, 50-Second connection port, 51-Second fixing rubber, 6-Three-way valve, 7-Sheath. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] Example 1

[0021] like Figs. 1-2As shown, a dual-balloon delivery device for treating stone impaction during ERCP includes a rubber core 2. The rubber core 2 has a first channel 21 for injecting water or air and a guidewire channel 1 for threading a zebra guidewire 1 along its length. The first channel 21 is a through-hole design, and the foremost end of the first channel 22 is located at the balloon 3.

[0022] The first balloon 3 is fixedly sleeved on the front end of the rubber inner core 2. To ensure the sealing of the first balloon 3 during use and to prevent the first balloon 3 from sliding, the front and rear ends of the first balloon 3 are respectively provided with first fixing rubber 31. On the other hand, in order to realize the communication between the first balloon 3 and the first channel 21, the front end side wall of the first channel 21 is provided with a connection port 30, and the connection port 30 communicates with the inside of the balloon 3.

[0023] The front end of the rubber inner core 2 is integrally provided with a front end inner core 20. The diameter of the front end inner core 20 gradually increases from the front end to the rear end. By using a front end inner core 20 that is thinnest at the front end and gradually thickens at the rear end, it can be ensured that the front end inner core 20 can smoothly pass through the stone impaction site with the first balloon 3. Combined with the zebra guidewire 1, it can ensure the movement trajectory of the first balloon 3, so that the first balloon 3 can clamp the stone at the front end, making it easier to push the stone back to the upper part of the bile duct for re-removal.

[0024] The inner tube 4 is slidably sleeved on the rubber inner core 2. Specifically, the inner tube 4 has two channels inside. One is a second channel 41, which is used to inject water or air into the second balloon 5. The other is a main pipe through which the entire inner core 2 passes. This main pipe is designed to pass through the entire inner core 2.

[0025] The second balloon 5 is sleeved at the front end of the inner tube 4. To ensure the sealing of the second balloon 5 during use and to prevent the second balloon 5 from sliding, second fixing rubber 51 is provided at both the front and rear ends of the second balloon 5. On the other hand, in order to realize the communication between the second balloon 5 and the second channel 41, a connection port 50 is provided on the front side wall of the second channel 41, and the connection port 50 communicates with the interior of the second balloon 5.

[0026] In order to enable the second balloon 5 to slide on the inner core 2, a sheath 7 is also slidably disposed on the inner core 2, and the sheath 7 is located on the rear side of the second balloon 5.

[0027] To enable the injection of water or air into the first balloon 3 and the second balloon 5, three-way valves 6 are respectively installed at the inlet ends of the first channel 21 and the second channel 41. One of the two three-way valves 6 is connected to the first channel 21 or the second channel 41, and the other two are connected to the air supply and water supply pipelines, respectively.

[0028] How to use this device:

[0029] First, the inner core 2 with zebra guide wire 1 is passed above the embedded stone. Then, air or water is injected into the first balloon 3 to fix the inner core 2 to the bile duct wall. Next, the second balloon 5 is inserted through the inner core 2 and an appropriate amount of gas or water is injected into the second balloon 5 to inflate it below the stone. Then, by pushing the sheath 7 inward and pulling the inner core 2 outward, the stone is pushed into the upper part of the bile duct by applying force from both ends towards the middle.

[0030] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A double balloon push device for stone impacted under ERCP, characterized in that: Comprising A rubber inner core (2) is provided with a zebra guide wire (1) through it; A first balloon (3) is fixedly sleeved on the front end of the rubber inner core (2); the rubber inner core (2) is further provided with a first channel (21), the front end side wall of the first channel (21) is provided with a first connecting port (30), and the first connecting port (30) is in communication with the inside of the first balloon (3); The front end of the rubber inner core (2) is integrally provided with a front end inner core (20); An inner tube (4) is slidably sleeved on the rubber inner core (2); A second balloon (5) is sleeved on the front end of the inner tube (4); the inner tube (4) is further provided with a second channel (41), the front end side wall of the second channel (41) is provided with a second connecting port (50), and the second connecting port (50) is in communication with the inside of the second balloon (5).

2. The double balloon push device for stone impaction under ERCP according to claim 1, characterized in that: The diameter of the front end of the front end inner core (20) gradually increases from the front end to the rear end.

3. The double balloon push device for stone impaction under ERCP according to claim 1, characterized in that: A sheath tube (7) is further slidably arranged on the inner tube (4), and the sheath tube (7) is located at the rear side of the second balloon (5).

4. The double balloon push device for stone impaction under ERCP according to claim 1, characterized in that: The inlet ends of the first channel (21) and the second channel (41) are respectively provided with three-way valves (6).

5. The double balloon push device for stone impaction under ERCP according to claim 1, characterized in that: The front end and the rear end of the first balloon (3) are respectively provided with first fixed rubbers (31); the front end and the rear end of the second balloon (5) are respectively provided with second fixed rubbers (51).

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