Gallbladder-preserving and calculus-removing tunnel capsule

Abstract

The invention provides a gallbladder-preserving and calculus-removing tunnel capsule. The gallbladder-preserving and calculus-removing tunnel capsule comprises a soluble protective shell and a flexible capsule body, an open hole is formed in the top of the soluble protective shell, and the flexible bag body is arranged in the soluble protective shell in a compressed state. The flexible balloon body comprises a tunnel tube and an operation balloon, the first end of the tunnel tube is communicated with the operation balloon, and the second end of the tunnel tube extends out of the soluble protective shell along the open hole. An operation end is arranged on the operation balloon, an annular containing cavity is formed between the outer side wall and the inner side wall of the operation end, an operation area is formed on the inner side of the annular containing cavity, and an operation hole is formed in the inner side wall of the operation end. A necking line is arranged in the annular containing cavity, an operation line end is arranged at one end of the necking line, and the operation line end extends into the operation balloon along the operation hole. According to the gallbladder-preserving and calculus-removing tunnel capsule, a connecting operation channel can be established between the gallbladder and the stomach in the gallbladder-preserving and calculus-removing process, and bile and calculus are prevented from entering the abdominal cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a gallbladder-preserving and stone-removing tunnel capsule. Background Art

[0002] Endoscopic cholecystolithotomy is a minimally invasive procedure used to remove gallstones while preserving the gallbladder. Compared to traditional surgical procedures (such as cholecystectomy and laparotomy), endoscopic cholecystolithotomy preserves the gallbladder, maintaining its normal function during digestion, has less impact on the patient's digestive system, and offers the advantages of less trauma, faster recovery, and less postoperative pain, thereby avoiding the occurrence of related long-term complications.

[0003] However, since endoscopic gallbladder stone removal surgery requires opening the gallbladder, when there are many stones inside the patient's gallbladder, the gastroscope needs to be frequently driven in and out during the operation. Frequent in and out movements not only increase the difficulty of the doctor's operation, but may also cause the stones and bile inside the gallbladder to enter the patient's abdominal cavity. The entry of stones or bile into the abdominal cavity will have adverse effects on the patient, especially after bile enters the abdominal cavity, it is likely to cause the patient to develop an acute infection symptom of bile peritonitis, thereby increasing the patient's surgical risk. Summary of the Invention

[0004] In view of this, the present invention aims to provide a gallbladder-preserving and stone-removing tunnel capsule to solve the above technical problems.

[0005] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0006] A gallbladder-preserving stone removal tunnel balloon comprises a soluble protective shell and a flexible balloon body, wherein the top of the soluble protective shell is provided with an open hole, and the flexible balloon body is placed inside the soluble protective shell in a compressed state; the flexible balloon body comprises a tunnel tube and an operating balloon, the first end of the tunnel tube is connected to the operating balloon, and the second end of the tunnel tube extends to the outside of the soluble protective shell along the open hole, an operating end is provided on the operating balloon, and the operating end and the tunnel tube are respectively located on both sides of the center of the operating balloon; an annular accommodating cavity is provided between the outer wall and the inner wall of the operating end, an operating area is formed on the inner side of the annular accommodating cavity, and an operating hole connected to the annular accommodating cavity is provided on the inner wall of the operating end; a shrinkage line is provided inside the annular accommodating cavity, an operating thread head is provided at one end of the shrinkage line, and the operating thread head extends along the operating hole to the inside of the operating balloon;

[0007] During the insertion of the gallbladder-preserving lithotripsy tunnel balloon, the second end of the tunnel tube is clamped and fixed by a gastroscope, so that the gallbladder-preserving lithotripsy tunnel balloon follows the gastroscope into the stomach, and the soluble protective shell can protect the flexible balloon body;

[0008] After the gallbladder-preserving stone removal tunnel balloon reaches the preset positioning position in the stomach, the second end of the tunnel tube is fixed at the preset positioning position by a titanium clip, and the soluble protective shell is dissolved by the water provided by the gastroscope, so that the flexible balloon body is transformed into a stretched state;

[0009] After the flexible balloon is transformed into an expanded state, an incision is made in the stomach wall, and then the operating balloon is inserted into the abdominal cavity along the incision through a gastroscope, with the operating end of the operating balloon contacting the gallbladder;

[0010] After the operating end of the operating balloon is brought into contact with the gallbladder, the flexible balloon is inflated through a gastroscope to allow the operating end to fit tightly against the gallbladder. A titanium clip is then placed inside the operating area to secure the operating end to the gallbladder.

[0011] After the operating tip is fixed to the gallbladder, an operating incision is made inside the operating area to cut open the operating balloon and gallbladder, allowing bile and small stones to enter the operating balloon. Subsequently, bile is collected and the remaining stones in the gallbladder are cleaned through a gastroscope to prevent bile and stones from entering the abdominal cavity during the operation.

[0012] After bile collection and stone removal, the operating incision is closed with a titanium clip, and a circular separation incision is opened inside the operating area to separate the operating balloon from the gallbladder.

[0013] After the operating balloon is separated from the gallbladder, the operating thread head is pulled, and the opening formed by the annular separation incision on the operating end can be contracted and closed through the shrinking thread, preventing the bile and stones remaining inside the operating balloon from entering the abdominal cavity; then the flexible balloon is moved back to the stomach through the gastroscope, and the stomach wall incision is closed with a titanium clip, and finally the flexible balloon is moved out of the body with the gastroscope.

[0014] Furthermore, the bottom of the soluble protective shell is provided with an arc-shaped guiding surface with the arc center facing the open hole.

[0015] Furthermore, the soluble protective shell includes an upper shell and a lower shell, the open hole is arranged at the top of the upper shell, a first splicing interface is provided at the bottom of the upper shell, and a second splicing interface for accommodating the first splicing interface is provided at the top of the lower shell.

[0016] Furthermore, the soluble protective shell is made of pullulan.

[0017] Furthermore, a control line is provided inside the first end of the tunnel tube.

[0018] Furthermore, a pre-buried ring is provided in the side wall of the first end of the tunnel pipe, both ends of the control line are connected to the pre-buried ring, and the length direction of the control line is perpendicular to the length direction of the tunnel pipe.

[0019] Furthermore, the flexible capsule is made of PET film material.

[0020] Furthermore, a connecting ring is provided at one end of the shrinkage line away from the operating wire head, and the operating wire head extends into the interior of the operating balloon along the operating hole after passing through the connecting ring.

[0021] Compared with the existing technology, the gallbladder-preserving and lithotripsy tunnel capsule created by the present invention has the following advantages:

[0022] (1) The present invention creates a gallbladder-preserving and lithotripsy tunnel balloon, in which a flexible balloon body is arranged inside a soluble protective shell. During the process of sending the device into the stomach through a gastroscope, the soluble protective shell can protect the flexible balloon body to prevent the flexible balloon body from being damaged. During the gallbladder-preserving and lithotripsy operation, the flexible balloon body can form an operating channel between the stomach and the gallbladder, thereby preventing bile and stones from entering the abdominal cavity during the operation. In addition, after the gallbladder-preserving and lithotripsy operation is completed, the device can shrink and close the opening on the operating balloon through the shrinking line, thereby preventing bile and stones remaining inside the operating balloon from entering the abdominal cavity.

[0023] (2) The present invention creates a gallbladder-preserving stone removal tunnel capsule, and the bottom of its soluble protective shell is provided with an arc-shaped guiding surface, thereby reducing the difficulty of the device entering the patient's stomach along with the gastroscope and reducing the patient's discomfort.

[0024] (3) The present invention creates a gallbladder-preserving stone removal tunnel balloon, which has a control line inside the tunnel tube. During the operation, medical staff can clamp the control line with biopsy forceps to flexibly control the movement of the balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of the structure of the gallbladder-preserving and lithotomy tunnel capsule according to an embodiment of the present invention;

[0027] Figure 2 An exploded view of the soluble protective shell according to an embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of the flexible capsule according to an embodiment of the present invention (the flexible capsule is in an expanded state);

[0029] Figure 4 A cross-sectional view (along the length of the tunnel tube) of the flexible bladder according to an embodiment of the present invention;

[0030] Figure 5 A cross-sectional view of the operating balloon according to an embodiment of the present invention (along the shrinkage line);

[0031] Figure 6 A cross-sectional view of the operating balloon according to an embodiment of the present invention (exposing the inner side wall of the operating end);

[0032] Figure 7 A cross-sectional view of the operating balloon according to an embodiment of the present invention (with the inner side wall of the operating end exposed and an operating incision opened);

[0033] Figure 8 A cross-sectional view of the operating balloon according to an embodiment of the present invention (with the inner side wall of the operating end exposed and the operating incision closed);

[0034] Figure 9 A cross-sectional view of the operating balloon according to an embodiment of the present invention (with the inner side wall of the operating end exposed, the operating incision closed, and an annular separation incision opened);

[0035] Figure 10 This is a cross-sectional view of the operating balloon according to an embodiment of the present invention (the inner side wall of the operating end is exposed, and the annular separation incision is closed by a shrinkage line).

[0036] Description of reference numerals:

[0037] 11-upper shell; 111-open hole; 112-first joint; 12-lower shell; 121-arc-shaped guide surface; 122-second joint; 2-tunnel tube; 21-control line; 22-embedded ring; 3-operation balloon; 31-operation area; 32-shrinkage line; 321-operation line head; 322-connecting ring; 33-operation incision; 34-annular separation incision; 41-positioning titanium clip; 42-fixing titanium clip; 43-closing titanium clip. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] A gallbladder-preserving lithotripsy tunnel balloon is used to prevent bile and stones from entering the abdominal cavity during a gallbladder-preserving lithotripsy operation performed through a gastroscope. Figures 1-10 This is a schematic diagram of a gallbladder-preserving and lithotripsy tunnel balloon. In this embodiment, the gallbladder-preserving and lithotripsy tunnel balloon includes a soluble protective shell and a flexible balloon body. The soluble protective shell is used to protect the flexible balloon body during the process of the device entering the patient's body, and the flexible balloon body is used to establish an operating channel between the stomach and the gallbladder to prevent bile and stones from entering the abdominal cavity during the operation.

[0043] Specifically, the flexible capsule includes a tunnel tube 2 and an operating balloon 3. The first end of the tunnel tube 2 is connected to the operating balloon 3, and an operating end is provided on the operating balloon 3, with the operating end and the tunnel tube 2 located on either side of the center of the operating balloon 3. An annular accommodating cavity is provided between the outer and inner walls of the operating end, and an operating area 31 is formed inside the annular accommodating cavity. An operating hole connected to the annular accommodating cavity is provided on the inner wall of the operating end. A constriction line 32 is also provided inside the annular accommodating cavity, and an operating thread head 321 is provided at one end of the constriction line 32, and the operating thread head 321 extends along the operating hole into the interior of the operating balloon 3.

[0044] Optionally, in order to form the annular accommodating cavity, the staff can first open an annular groove on the inner wall of the operating end, and then place the necking line 32 into the annular groove, and then paste an annular sealing sheet in the opening area of ​​the annular groove (the material of the annular sealing sheet should be the same as the material of the flexible bladder, the operating hole is set on the annular sealing sheet, and the operating line head 321 of the necking line 32 should be passed through the operating hole before pasting), so that the annular sealing sheet fills the missing inner wall of the operating end caused by the opening of the annular groove.

[0045] When the device is delivered into the patient's body, in order to protect the flexible capsule, the medical staff can compress the flexible capsule and place it inside the soluble protective shell. Accordingly, in order to facilitate the medical staff to clamp and fix the device through the gastroscope and facilitate the device to follow the gastroscope into the patient's stomach, an open hole 111 should be provided on the top of the soluble protective shell, and the second end of the tunnel tube 2 should extend to the outside of the soluble protective shell along the open hole 111. Figure 1 As shown, when the device is delivered into the patient's stomach, a positioning titanium clip 41 can be set on the second end of the tunnel tube 2, and the device with the positioning titanium clip 41 can be driven to move by the gastroscope, so that the device follows the gastroscope into the patient's stomach.

[0046] Optionally, in order to facilitate the placement of the flexible capsule into the soluble shell, the soluble shell in this embodiment may adopt a split splicing structure. Figure 2 As shown, the dissolvable shell may include an upper shell 11 and a lower shell 12, wherein an open hole 111 is provided at the top of the upper shell 11, a first splicing hole 112 is provided at the bottom of the upper shell 11, and a second splicing hole 122 is provided at the top of the lower shell 12. When assembling the flexible bladder and the dissolvable shell, the compressed flexible bladder can first be placed into the interior of the lower shell 12 along the second splicing hole 122, and then the second end of the tunnel tube 2 can be passed through the open hole 111 to the outside of the upper shell 11. Next, the first splicing hole 112 is inserted into the second splicing hole 122, thereby completing the splicing between the upper shell 11 and the lower shell 12, and allowing the compressed flexible bladder to remain inside the dissolvable shell.

[0047] In addition, the bottom of the soluble protective shell may be provided with an arc-shaped guide surface 121 with its center facing the opening 111. The provision of the arc-shaped guide surface 121 can prevent the device from scraping against organs such as the esophagus as it follows the gastroscope into the patient's stomach, thereby reducing the difficulty of the device following the gastroscope into the patient's stomach and alleviating the patient's discomfort.

[0048] When the device enters the stomach and reaches the preset positioning position (the preset positioning position is usually selected on the stomach wall near the area where the gallbladder is located), the gastroscope-attached water can be sprayed on the soluble protective shell. When the soluble protective shell comes into contact with the gastroscope-attached water, the soluble protective shell will dissolve. After the soluble protective shell dissolves, the compressed flexible capsule will enter the Figure 3 In the expanded state shown, the second end of the tunnel tube 2 can be secured at a predetermined location on the stomach using the positioning titanium clip 41. Accordingly, when the positioning titanium clip 41 is used to secure the second end of the tunnel tube 2 at the predetermined location, the positioning titanium clip 41 should only clamp a corner of the second end of the tunnel tube 2, facilitating the insertion of relevant operating instruments into the flexible bladder along the second end of the tunnel tube 2 during subsequent procedures.

[0049] For example, the soluble protective shell in this embodiment can be made of pullulan. Pullulan is an extracellular water-soluble mucosal polysaccharide similar to glucan and xanthan gum produced by the fermentation of Aureobasidium pullulans. It is currently widely used in the fields of medicine and health products as a processing material for capsules. The specific components of pullulan and the processing method of forming a thin shell product using pullulan are well known to the public and will not be described in detail in this application.

[0050] After fixing the second end of the tunnel tube 2 at the preset positioning position, a stomach wall incision can be opened on the stomach wall below the positioning titanium clip 41, and the operating balloon 3 can be sent into the abdominal cavity along the stomach wall incision so that the operating end of the operating balloon 3 contacts the gallbladder.

[0051] In order to flexibly drive the operating balloon 3 to move, Figure 4 and Figure 5 As shown, in this embodiment, a control line 21 may be provided inside the first end of the tunnel tube 2. After the stomach wall incision is completed, the medical staff can clamp the control line 21 with the biopsy forceps of the gastroscope to facilitate the insertion of the operating balloon 3 into the abdominal cavity along the stomach wall incision, with the operating end contacting the gallbladder.

[0052] Optionally, to achieve a connection between the control line 21 and the flexible bladder, a pre-embedded ring 22 may be provided in the sidewall of the first end of the tunnel tube 2. Both ends of the control line 21 should be connected to the pre-embedded ring 22, and the length of the control line 21 should be perpendicular to the length of the tunnel tube 2. During the production and processing of the flexible bladder, workers can pre-open a receiving groove on the inner sidewall of the tunnel tube 2, then insert the pre-embedded ring 22 connected to the control line 21 into the receiving groove. The receiving groove is then filled with a filling material of the same material as the flexible bladder, thereby completing the pre-embedded processing of the pre-embedded ring 22. During use, the presence of the pre-embedded ring 22 can prevent the control line 21 from moving abnormally along the length of the tunnel tube 2, ensuring that medical staff can smoothly drive the operating balloon 3 to move along the length of the tunnel tube 2 after clamping the control line 21. At the same time, since the length direction of the control line 21 is perpendicular to the length direction of the tunnel tube 2, after clamping the control line 21, the operating balloon 3 can flexibly rotate and swing following the movement of the biopsy forceps, so that the operating balloon 3 can accurately enter the abdominal cavity along the incision of the stomach wall and contact the gallbladder.

[0053] After the operating end of the operating balloon 3 contacts the gallbladder, the flexible balloon can be inflated through the gastroscope to make the outer wall of the operating end fit tightly against the outer wall of the gallbladder. Next, the control line 21 can be cut to obtain a larger operating space inside the flexible balloon to avoid the existence of the control line 21 blocking subsequent operations. Subsequently, multiple fixed titanium clips 42 can be set inside the operating area 31 to fix the operating end of the operating balloon 3 on the gallbladder using the fixed titanium clips 42. Figure 7 As shown, in order to ensure that there is enough space for the subsequent gallbladder preservation and stone removal operation, multiple fixed titanium clips 42 should be arranged in a ring shape inside the operation area 31.

[0054] After the fixation of the operating balloon 3 and the gallbladder is completed, an operating incision 33 can be opened inside the operating area 31 through the electric knife of the gastroscope, and the operating incision 33 should be opened on the inner side of multiple fixing titanium clips 42 arranged in a ring. During the opening operation, the operating incision 33 should cut the side wall of the operating balloon 3 and the side wall of the gallbladder, so that the bile and small stones inside the gallbladder can enter the inside of the operating balloon 3 along the operating incision 33 after the opening is completed. Next, medical staff can collect bile through the suction hole on the gastroscope and clean the remaining stones inside the gallbladder with biopsy forceps. Compared with the existing technology, since the present device can use the operating balloon 3 to receive bile and small stones, it can prevent bile and stones from entering the abdominal cavity during the operation.

[0055] like Figure 8 and Figure 9As shown, after completing the bile and stone cleaning work, the medical staff can first use the closed titanium clip 43 to close the operating incision 33 on the gallbladder, and then use the gastroscope's electric knife to open an annular separation incision 34 inside the operating area 31 to separate the operating balloon 3 from the gallbladder. It should be noted that in this embodiment, the inner diameter of the annular separation incision 34 should be larger than the inner diameter of the annular area formed by the multiple fixed titanium clips 42. Before opening the annular separation incision 34, a small amount of gas should be re-inflated into the flexible balloon through the gastroscope. At this time, the operating balloon 3 will slightly expand, separating the operating area 31 outside the fixed titanium clip 42 from the gallbladder, thereby avoiding damage to the gallbladder when opening the annular separation incision 34.

[0056] After the operating balloon 3 is separated from the gallbladder, the operating thread 321 can be pulled to prevent the bile and stones remaining inside the operating balloon 3 from entering the abdominal cavity. Figure 10 As shown, pulling the operating thread 321 causes the shrinking thread 32 to move within the annular accommodating cavity, thereby shrinking and closing the opening formed by the annular separation incision 34 on the operating end. The flexible bladder is then returned to the stomach through a gastroscope, and the titanium clip 42 and the remaining portion of the flexible bladder formed by the annular separation incision are removed. Finally, the stomach wall incision is closed with the titanium clip, and the flexible bladder is removed through a gastroscope.

[0057] Optionally, to achieve the shrinking and closing effect of the opening of the shrinking wire 32, a connecting ring 322 may be provided at the end of the shrinking wire 32 away from the operating wire head 321, and the operating wire head 321 should extend into the interior of the operating balloon 3 along the operating hole after passing through the connecting ring 322. After the operating wire head 321 passes through the connecting ring 322, the shrinking wire 32 will form a movable coil in the annular accommodating cavity. When the operating wire head 321 is pulled, the inner diameter of the movable coil will shrink, thereby achieving shrinkage and closing of the opening.

[0058] For example, the flexible capsule in this embodiment can be made of PET film. PET film is a thin film material made of polyethylene terephthalate (PET) that has excellent toughness and transparency. The specific composition and processing methods of PET film are well known to the public and are not described in detail in this application.

[0059] The following describes the effects of the above scheme:

[0060] This embodiment provides a gallbladder-preserving lithotripsy tunnel balloon, which can protect the flexible balloon body with a soluble protective shell to prevent damage to the flexible balloon body. During a gallbladder-preserving lithotripsy operation, the flexible balloon body can form an operating channel between the stomach and the gallbladder, preventing bile and stones from entering the abdominal cavity during the operation. In addition, after the gallbladder-preserving lithotripsy operation is completed, the device can also shrink and close the opening on the operating balloon through a shrinking line, thereby preventing bile and stones remaining inside the operating balloon from entering the abdominal cavity.

[0061] It should be noted that the positioning titanium clip 41, the fixing titanium clip 42, and the closing titanium clip 43 described in this embodiment are all "titanium clips" commonly used surgical tools during endoscopic surgery. In order to facilitate the distinction between the titanium clips used in different steps and different positions, they are named differently in this embodiment to facilitate understanding and explanation. Those skilled in the art are already familiar with the structure, usage method, and working principle of the titanium clip, so they will not be described in detail in this article. In addition, the titanium clip setting, water spraying, inflation, bile collection, biopsy forceps operation, and electric knife cutting based on the gastroscope in this embodiment are all common functions of existing gastroscopes. Those skilled in the art are familiar with the specific usage methods of the above functions and can correctly use the relevant functional accessories to operate.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gallbladder-preserving stone removal tunnel capsule, characterized by: The invention comprises a soluble protective shell and a flexible capsule, wherein the top of the soluble protective shell is provided with an open hole (111), and the flexible capsule is placed inside the soluble protective shell in a compressed state; the flexible capsule comprises a tunnel tube (2) and an operation balloon (3), the first end of the tunnel tube (2) is connected to the operation balloon (3), and the second end of the tunnel tube (2) extends to the outside of the soluble protective shell along the open hole (111), an operation end is provided on the operation balloon (3), and the operation end and the tunnel tube (2) are respectively located on both sides of the center of the operation balloon (3); an annular accommodating cavity is provided between the outer wall and the inner wall of the operation end, an operation area (31) is formed inside the annular accommodating cavity, and an operation hole connected to the annular accommodating cavity is provided on the inner wall of the operation end; a shrinkage line (32) is provided inside the annular accommodating cavity, an operation thread head (321) is provided at one end of the shrinkage line (32), and the operation thread head (321) extends to the inside of the operation balloon (3) along the operation hole.

2. The gallbladder-preserving and lithotomy tunnel capsule according to claim 1, characterized in that: The bottom of the soluble protective shell is provided with an arc-shaped guide surface (121) with the arc center facing the open hole (111).

3. The gallbladder-preserving and lithotomy tunnel capsule according to claim 1, characterized in that: The soluble protective shell comprises an upper shell (11) and a lower shell (12), the open hole (111) is arranged at the top of the upper shell (11), a first splicing interface (112) is provided at the bottom of the upper shell (11), and a second splicing interface (122) for accommodating the first splicing interface (112) is provided at the top of the lower shell (12).

4. The gallbladder-preserving and lithotomy tunnel capsule according to claim 1, characterized in that: The soluble protective shell is made of pullulan.

5. The gallbladder-preserving stone removal tunnel balloon according to claim 1, characterized in that: A control line (21) is provided inside the first end of the tunnel tube (2).

6. The gallbladder-preserving and lithotomy tunnel capsule according to claim 5, characterized in that: A pre-buried ring (22) is provided in the side wall of the first end of the tunnel pipe (2), both ends of the control line (21) are connected to the pre-buried ring (22), and the length direction of the control line (21) is perpendicular to the length direction of the tunnel pipe (2).

7. The gallbladder-preserving and lithotomy tunnel balloon according to claim 1, characterized in that: The flexible capsule is made of PET film material.

8. The gallbladder-preserving and lithotomy tunnel balloon according to claim 1, characterized in that: A connecting ring (322) is provided at one end of the shrinking line (32) away from the operating line head (321), and the operating line head (321) extends into the interior of the operating balloon (3) along the operating hole after passing through the connecting ring (322).

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