Choledochoscope adjusting system

Abstract

The utility model discloses a choledochoscope adjusting system which comprises a blocking air bag, an adjusting air bag and a choledochoscope. The choledochoscope comprises an eyepiece, an objective lens and a guide tube, the eyepiece is arranged at the near end of the guide tube, and the objective lens is arranged at the far end of the guide tube; a first pipe cavity channel and a second pipe cavity channel are arranged on the outer wall of the guide pipe in parallel; the plugging air bag enters the bile duct through the first lumen channel and can move to the far end of the bile duct calculus along the extension line of the first lumen channel before air injection, and the bile duct calculus can be plugged between the objective lens and the plugging air bag by injecting air into the plugging air bag; the adjusting air bag enters the bile duct through the second lumen channel and comprises a plurality of sub-air bags, the sub-air bags surround the outer wall of the far end of the second lumen channel in the circumferential direction and are symmetrically fixed to the outer wall of the far end of the second lumen channel, and the direction of the objective lens is adjusted by independently adjusting the air injection amount of the sub-air bags so that the eyepiece can accurately observe the center of bile duct calculus. The choledochoscope adjusting system not only can improve the energy lithotripsy efficiency, but also can reduce the damage of energy to the bile duct wall.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a cholangioscope adjustment system. Background Technology

[0002] A cholangioscope is a medical device used for the examination and treatment of the bile duct system. It helps doctors observe the internal condition of the bile ducts, diagnose and treat diseases such as the fragmentation and removal of bile duct stones. A cholangioscope mainly consists of a rigid part and a flexible part. The rigid part includes the eyepiece and direction control knob, while the flexible part is primarily the light guiding system, composed of a light source aperture, objective lens, guide tube, and lumen channel, all encased in synthetic resin rubber. The distal end (closer to the bile duct) is a flexible section. The eyepiece can be freely adjusted in focus to suit different doctors' vision and observation needs, ensuring clear images. The direction control knob adjusts the angle and direction of the flexible section, allowing it to bend according to predetermined directions and angles to adapt to the anatomy of the bile duct and reach the target location. The light source aperture transmits light, providing illumination for observation within the bile duct. The objective lens, located at the distal end of the guide tube, is responsible for collecting images from inside the bile duct. The lumen channel includes channels for inserting surgical instruments (such as biopsy forceps, stone retrieval baskets, etc.) and for irrigation and suction. Synthetic resin rubber is used to provide protection while ensuring the safety and comfort of the cholangioscope as it moves within the bile duct.

[0003] Currently, the adjustment direction of the distal end of the cholangioscopy has been upgraded from 2 directions (left and right) to 4 directions (up, down, left, and right), improving flexibility and providing better maneuverability. This allows the distal end to bend in more directions to adapt to different anatomical angles of the bile duct. However, even with these improvements, cholangioscopy still faces some challenges in practical use. During cholangioscopy, after the cholangioscopy sheath enters the bile duct, the difference in the connection angle between the bile duct and duodenum (the presence of an angle) may generate varying degrees of counterforce. Forces are reciprocal; when the cholangioscopy applies force in the forward direction, the tissue within the bile duct may generate a rebound force. If this rebound force is too large, it will cause the tip of the duodenoscope to retract into the stomach cavity after being subjected to force, changing its position and potentially causing the cholangioscopy to dislodge from the bile duct. Ultimately, this makes it difficult to adjust the distal end of the cholangioscopy to the center of the bile duct stone. In order to re-enter the bile duct and adjust it to the center of the bile duct stone, the position of the duodenoscope needs to be readjusted. The repeated adjustments are time-consuming and laborious, resulting in a long stone fragmentation time, low efficiency, and even causing bleeding or perforation of the bile duct wall, leading to serious complications.

[0004] On the other hand, in existing technologies, doctors mainly use the direction control knob to control four steering wires to adjust the angle and direction of the lens. However, in the special environment inside the body, due to the poor flexibility of the steering wires, if the lens is subjected to force on one side, it will become difficult to adjust the lens direction by the direction control knob on the opposite or same side of the steering wire, resulting in a poor adjustment effect and making it impossible to accurately locate bile duct stones. Utility Model Content

[0005] The purpose of this invention is to provide a choledochoscope adjustment system that can quickly block and accurately locate bile duct stones by using a blocking balloon and an adjusting balloon, thereby improving the efficiency of energy stone fragmentation and reducing energy damage to the bile duct wall.

[0006] To achieve the above objectives, this utility model provides a cholangioscopic adjustment system, comprising: a blocking balloon, an adjusting balloon, and a cholangioscopic endoscope;

[0007] The cholangioscope includes an eyepiece, an objective lens, and a guide tube. The eyepiece is located at the proximal end of the guide tube, and the objective lens is located at the distal end of the guide tube. A first lumen channel and a second lumen channel are arranged parallel to each other on the outer wall of the guide tube.

[0008] The occlusion balloon enters the bile duct through the first lumen channel. Before being inflated, the occlusion balloon can move along the extension line of the first lumen channel to the distal end of the bile duct stone. By inflating the occlusion balloon, the bile duct stone can be sealed between the objective lens and the occlusion balloon.

[0009] The regulating balloon enters the bile duct through the second lumen channel. The regulating balloon includes several sub-balloons. The sub-balloons are circumferentially surrounded and symmetrically fixed to the outer wall of the distal end of the second lumen channel. The direction of the objective lens is adjusted by independently adjusting the inflation volume of the sub-balloons so that the eyepiece can accurately observe the center of the bile duct stone.

[0010] The proximal end refers to the side away from the bile duct, and the distal end refers to the side closer to the bile duct.

[0011] Optionally, the occlusion airbag is located 0.5cm-1.0cm in front of the objective lens.

[0012] Optionally, the shape of the sealing airbag can be any one of circular, elliptical, or disc-shaped.

[0013] Optionally, adjusting the inflation volume of the occlusion balloon can allow the bile duct stone to move between the objective lens and the occlusion balloon.

[0014] Optionally, the adjustment airbag is fixed 1.0cm-2.0cm behind the objective lens.

[0015] Optionally, the sub-airbag can be either circular or elliptical in shape.

[0016] Optionally, the blocking airbag and the regulating airbag are injected with air independently through the injection pipe.

[0017] Optionally, it also includes an energy lithotripsy device and a third lumen channel, the third lumen channel being arranged parallel to the outer wall of the guide tube, the energy lithotripsy device entering the bile duct through the third lumen channel.

[0018] Optionally, the energy-based lithotripsy device can be either a laser lithotripsy device or an electrohydraulic lithotripsy device.

[0019] Optionally, the energy outlet of the energy lithotripsy device is aligned with the center of the bile duct stone.

[0020] Compared with the prior art, the technical solution of this utility model has at least the following beneficial effects:

[0021] The uninflated occlusion balloon moves along the extension of the first lumen of the cholangioscope to the distal end of the bile duct stone. Inflation of the occlusion balloon seals the bile duct stone between the objective lens and the balloon. The inflation volume of the sub-balloons, symmetrically fixed to the distal outer wall of the second lumen of the cholangioscope, is then independently adjusted to change the objective lens orientation, allowing the eyepiece to accurately observe the center of the bile duct stone. After sealing and precisely locating the bile duct stone, the energy outlet of the energy lithotripsy device, entering through the third lumen of the cholangioscope, can be aligned with the center of the bile duct stone for precise fragmentation, significantly improving the efficiency of energy lithotripsy. Simultaneously, the sealed bile duct stone is less likely to shift during fragmentation, reducing energy damage to the bile duct wall. Attached Figure Description

[0022] Figure 1 This is a schematic diagram showing the connection angle between the bile duct and the duodenum.

[0023] Figure 2 This is a magnified schematic diagram of a portion of a choledochoscope and a duodenoscope.

[0024] Figure 3 This is a schematic diagram of the cholangioscopic adjustment system of this utility model.

[0025] Attached image labels:

[0026] Cholangioscopy 1

[0027] First lumen passage 11

[0028] Second lumen passage 12

[0029] Third lumen passage 13

[0030] Guide tube 14

[0031] Objective lens 15

[0032] Eyepiece 16

[0033] Control handle 17

[0034] 21 airbags

[0035] Adjustable airbag 22

[0036] 221 sub-airbags

[0037] 222 sub-airbags

[0038] 223 sub-airbags

[0039] 224 sub-airbags

[0040] 30 bile duct stones

[0041] Energy crushing equipment 40. Detailed Implementation

[0042] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The term "distal" refers to the side closer to the bile duct and further away from the operator, while "proximal" refers to the side further away from the bile duct and closer to the operator.

[0046] like Figure 1 and Figure 2As shown, due to the difference in the connection angle between the bile duct and the duodenum, during cholangioscopy, after the cholangioscope enters the bile duct through the duodenoscope sheath, the bile duct's curvature obstructs the cholangioscope's forward movement. The applied force causes the tissue within the bile duct to rebound, potentially causing the tip of the duodenoscope to retract into the stomach cavity, altering its position and pulling the cholangioscope out of the bile duct. This ultimately makes it difficult to adjust the distal end of the cholangioscope to the center of the bile duct stone, and repeated adjustments can easily cause bleeding or perforation of the bile duct wall. Furthermore, the existing technology's method of adjusting the lens direction using a direction control knob is ineffective and cannot accurately locate the bile duct stone.

[0047] To address the problem that choledochoscopes cannot accurately locate bile duct stones and are prone to damaging the bile duct wall, this invention provides a choledochoscope adjustment system, comprising a occlusion balloon, an adjustment balloon, and a choledochoscope, which are described in detail below.

[0048] like Figure 3 As shown, the cholangioscope 1 includes an eyepiece 16, an objective lens 15, and a guide tube 14. The eyepiece 16 is located at the proximal end of the guide tube 14, and the objective lens 15 is located at the distal end of the guide tube 14. A first lumen channel 11 and a second lumen channel 12 are arranged parallel to each other on the outer wall of the guide tube 14.

[0049] The occlusion balloon 21 enters the bile duct through the first lumen channel 11. Upon detection of a bile duct stone 30, the control handle 17 moves the uninflated occlusion balloon 21 along the extension of the first lumen channel 11 to the distal end of the bile duct stone 30. Then, air is injected into the occlusion balloon 21 through the inflation tube in the control handle 17 to seal the bile duct stone 30 between the objective lens 15 and the occlusion balloon 21. It is understood that when the radius of the inflated occlusion balloon 21 is greater than the distance between the occlusion balloon 21 and the bile duct stone 30, it can push the bile duct stone 30 towards the objective lens 15.

[0050] In some embodiments, by increasing the inflation volume of the occlusion airbag 21 or by pulling the occlusion airbag 21 with the control handle 17, the bile duct stone 30 can be pushed to a position 0.5cm-1.0cm in front of the objective lens 15 so that the eyepiece 16 can observe a clearer image. At the same time, the occlusion airbag 21 acts as a resisting and fixing force on the bile duct stone 30, preventing the bile duct stone 30 from moving away from the objective lens 15 after being subjected to force.

[0051] In some embodiments, the shape of the occlusion airbag is any one of circular, elliptical, or disc-shaped.

[0052] The regulating balloon 22 enters the bile duct through the second lumen channel 12. The regulating balloon 22 includes several sub-balloons, which are circumferentially surrounded and symmetrically fixed to the outer wall of the distal end of the second lumen channel 12. As an example, Figure 3The image shows four symmetrically fixed sub-balloons 221, 222, 223, and 224. Before entering the bile duct, the four sub-balloons are pre-fixed 1.0 cm to 2.0 cm behind the objective lens 15. After entering the bile duct, air is injected into the four sub-balloons through the air injection pipe in the second lumen channel 12 to adjust the orientation of the objective lens 15. For example, when sub-balloons 223 and 224 deflate and sub-balloons 221 and 222 inflate, sub-balloons 221 and 222 compress downwards, causing objective lens 15 to tilt downwards; when sub-balloons 221 and 222 deflate and sub-balloons 223 and 224 inflate, sub-balloons 223 and 224 compress upwards, causing objective lens 15 to tilt upwards; when sub-balloon 224 deflates and sub-balloons 221, 222, and 223 inflate, sub-balloons 221 and 222 compress downwards, sub-balloon 223 compresses upwards, and objective lens 15 tilts to the left; when sub-balloon 221 deflates and sub-balloons 222, 223, and 224 inflate, sub-balloons 223 and 224 compress upwards, sub-balloon 222 compresses downwards, and objective lens 15 tilts to the right. By adjusting the direction of objective lens 15 using the four sub-balloons, eyepiece 16 can accurately observe the center of bile duct stone 30.

[0053] In some embodiments, the sub-airbag is either circular or elliptical in shape.

[0054] In some embodiments, the occlusion airbag and the regulating airbag are inflated independently through inflation conduits.

[0055] The cholangioscopic adjustment system also includes an energy lithotripsy device 40 and a third lumen channel 13. The third lumen channel 13 is arranged parallel to the outer wall of the guide tube 14, and the energy lithotripsy device 40 enters the bile duct through the third lumen channel 13. After the bile duct stone 30 is blocked and accurately located using the above method, the energy outlet of the energy lithotripsy device 40 can be aligned with the center of the bile duct stone 30 for precise stone fragmentation, which greatly improves the efficiency of energy lithotripsy. At the same time, the bile duct stone 30 blocked by the blocking airbag 21 is less likely to shift during the stone fragmentation process, reducing the damage of energy to the bile duct wall.

[0056] In some embodiments, the energy-based lithotripsy device is either a laser lithotripsy device or an electrohydraulic lithotripsy device.

[0057] The following describes in detail, with reference to embodiments, the method of using the cholangioscopic adjustment system provided by this utility model.

[0058] Example

[0059] During the procedure, a disc-shaped occlusion balloon and an adjusting balloon fixed 1.0 cm behind the objective lens are simultaneously inserted into the bile duct through the first and second lumen channels of the choledochoscope. Upon locating a bile duct stone, the control handle moves the disc-shaped occlusion balloon along the extension of the first lumen channel to the distal end of the stone. Inflation is then performed on the disc-shaped occlusion balloon via the inflation tubing in the control handle, while simultaneously pulling the handle back to push the stone to a position 0.5 cm in front of the objective lens for contact and fixation. Subsequently, inflation is performed on the four sub-balloons of the adjusting balloon through the inflation tubing in the second lumen channel, controlling the objective lens's movement in all directions (up, down, left, right) until the eyepiece can precisely observe the center of the bile duct stone. After fixing and precisely locating the bile duct stone, it is introduced into the laser lithotripsy device through the third lumen channel of the choledochoscope. Its energy outlet is aligned with the center of the bile duct stone, delivering energy to break it up and down at a position 0.5 cm in front of the objective lens.

[0060] In summary, the cholangioscopy adjustment system provided by this utility model allows an uninflated occlusion balloon to move along the extension line of the first lumen of the cholangioscopy to the distal end of the bile duct stone. Inflating the occlusion balloon seals the bile duct stone between the objective lens and the occlusion balloon. The inflation volume of a sub-balloon, symmetrically fixed to the outer wall of the distal end of the second lumen of the cholangioscopy, is then independently adjusted to adjust the orientation of the objective lens, enabling the eyepiece to accurately observe the center of the bile duct stone. After sealing and accurately locating the bile duct stone, the energy outlet of the energy lithotripsy device, entering through the third lumen of the cholangioscopy, can be aligned with the center of the bile duct stone for precise stone fragmentation, significantly improving the efficiency of energy lithotripsy. Simultaneously, the sealed bile duct stone is less likely to shift during fragmentation, reducing energy damage to the bile duct wall.

[0061] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A cholangioscope adjustment system, characterized in that, Includes: occlusion balloon, adjustment balloon, and cholangioscope; The cholangioscope includes an eyepiece, an objective lens, and a guide tube. The eyepiece is located at the proximal end of the guide tube, and the objective lens is located at the distal end of the guide tube. A first lumen channel and a second lumen channel are arranged parallel to each other on the outer wall of the guide tube. The occlusion balloon enters the bile duct through the first lumen channel. Before being inflated, the occlusion balloon can move along the extension line of the first lumen channel to the distal end of the bile duct stone. By inflating the occlusion balloon, the bile duct stone can be sealed between the objective lens and the occlusion balloon. The regulating balloon enters the bile duct through the second lumen channel. The regulating balloon includes several sub-balloons. The sub-balloons are circumferentially surrounded and symmetrically fixed to the outer wall of the distal end of the second lumen channel. The direction of the objective lens is adjusted by independently adjusting the inflation volume of the sub-balloons so that the eyepiece can accurately observe the center of the bile duct stone. The proximal end refers to the side away from the bile duct, and the distal end refers to the side closer to the bile duct.

2. The cholangioscopic adjustment system as described in claim 1, characterized in that, The occlusion airbag is located 0.5cm-1.0cm in front of the objective lens.

3. The cholangioscopic adjustment system as described in claim 1, characterized in that, The shape of the sealing airbag can be any one of circular, elliptical, or disc-shaped.

4. The cholangioscopic adjustment system as described in claim 1, characterized in that, Adjusting the inflation volume of the occlusion balloon allows the bile duct stone to move between the objective lens and the occlusion balloon.

5. The cholangioscopic adjustment system as described in claim 1, characterized in that, The adjustment airbag is fixed 1.0cm-2.0cm behind the objective lens.

6. The cholangioscopic adjustment system as described in claim 1, characterized in that, The sub-airbag can be either circular or elliptical in shape.

7. The cholangioscopic adjustment system as described in claim 1, characterized in that, The sealing airbag and the regulating airbag are each injected with air independently through the injection pipe.

8. The cholangioscopic adjustment system as described in claim 1, characterized in that, It also includes an energy lithotripsy device and a third lumen channel, the third lumen channel being arranged parallel to the outer wall of the guide tube, through which the energy lithotripsy device enters the bile duct.

9. The cholangioscopic adjustment system as described in claim 8, characterized in that, The energy-based lithotripsy equipment can be either laser lithotripsy equipment or electrohydraulic lithotripsy equipment.

10. The cholangioscopic adjustment system as described in claim 8, characterized in that, The energy outlet of the energy lithotripsy device is aimed at the center of the bile duct stone.

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