Air bag dilating catheter for hepatobiliary surgery department
By using the airbag dilation catheter in hepatobiliary surgery and using the airbag to support the expansion of the gallbladder, the problems of limited visual field and insufficient operating space caused by the flattening of the gallbladder are solved, and the success rate and safety of gallstone stone extraction are significantly improved.
Patent Information
- Application Number
- CN202411668615.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-01-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During hepatobiliary surgery, after the bile in the gallbladder is pulled away, the gallbladder becomes flat, resulting in limited vision and insufficient operating space, especially when facing small and large quantities of gallstones, which increases the difficulty of retrieving stones. .
A hepatobiliary surgical airbag expansion catheter is used to inflatrate the gallbladder through the airbag support tube to maintain proper expansion and provide better operating space and field of view. The catheter includes a guide tube, a winding tube, a knob, an airbag support tube and a traction guide wire. After inflation, the airbag support tube forms a spiral elliptical shape to expand the space in the gallbladder.
The expansion of the gallbladder is supported by the airbag, which significantly expands the operating space and field of view within the gallbladder, improves the visibility and success rate of the surgery, especially when dealing with small gallstones, reduces the risk of hiding in the wrinkles of the gallbladder wall.
Smart Images
Figure CN119318769A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a balloon dilatation catheter for hepatobiliary surgery. Background Art
[0002] Hepatobiliary surgery is an integral part of modern medicine, particularly crucial for the treatment of conditions such as gallstones. Gallstones are a common biliary tract disease, primarily composed of solid crystals of cholesterol, bile pigments, and calcium salts that form within the gallbladder or bile ducts. Symptoms include abdominal pain and jaundice, and in severe cases, they can lead to biliary tract infection, cholecystitis, and even bile duct cancer. Therefore, timely and effective gallstone removal surgery is crucial for patient recovery.
[0003] During gallstone removal surgery, an endoscope or other minimally invasive procedures are typically used to access the gallbladder and remove the bile to better expose the stones and facilitate surgical manipulation. This approach significantly improves surgical visibility and operating space, thereby increasing the success rate and safety of the procedure. However, in actual surgery, particularly when dealing with smaller and more numerous stones, some technical difficulties still exist.
[0004] When bile is drained from the gallbladder, it loses its original support and becomes flat. This not only limits the surgical field of view, making it difficult for doctors to accurately locate and remove stones, but also, given the narrow space inside the gallbladder, smaller stones are more likely to hide in the folds of the gallbladder wall, making stone removal more difficult. Summary of the Invention
[0005] The purpose of the present invention is to provide a balloon dilatation catheter for hepatobiliary surgery, which supports the gallbladder by inflating the balloon support tube, so that the gallbladder can be kept in an appropriate expanded state, thereby providing a better operating space and field of view for surgery.
[0006] The above technical objectives of the present invention are achieved through the following technical solutions:
[0007] A balloon dilatation catheter for hepatobiliary surgery comprises a guide tube, one end of the guide tube is connected to a winding tube, a winding shaft arranged along its length direction is rotatably connected inside the winding tube, one end of the winding shaft extends out of the winding tube and is provided with a knob, an airbag support tube is movably provided in the guide tube, one end of the support airbag is connected to the winding shaft, an inflation hole is opened inward at the outer end of the knob, which extends into the winding shaft and is connected to the airbag support tube, an inflation rubber plug is provided in the inflation hole of the knob, and the airbag support tube forms a spiral elliptical shape in the inflated state, a traction guide wire is provided in the airbag catheter, and both ends of the traction guide wire are respectively connected to the two ends inside the airbag catheter.
[0008] By adopting the above technical solution, when in use, the guide tube is inserted into the gallbladder position through an endoscope or other means. When the knob is turned to drive the winding tube to rotate, the airbag support tube is loosened from the winding tube and inserted into the gallbladder under the support of the guide wire. Then, a syringe is used to pass through the inflatable rubber stopper to inflate the airbag support tube, so that the airbag support tube is inflated and expanded to form a spiral elliptical shape to support the gallbladder, expand the operating space and field of view in the gallbladder, and facilitate stone removal.
[0009] The present invention is further configured such that: the guide tube is a semi-rigid hose.
[0010] The present invention is further configured such that: the outer periphery of the knob is provided with anti-slip grooves.
[0011] The present invention is further configured such that: the airbag support tube is made of polyurethane.
[0012] The present invention is further configured such that when no external force is applied, the traction guide wire forms a spiral elliptical shape.
[0013] In summary, the present invention has the following beneficial effects: the present invention utilizes an airbag support tube to extend into the gallbladder, and after the airbag support tube is inflated, it forms a spiral elliptical shape to prop up the gallbladder, so that the gallbladder maintains an appropriate expansion state, expands the operating space and field of view in the gallbladder, and facilitates stone removal. The traction guide wire in the airbag support tube utilizes its own rigidity to enable the airbag support tube to extend out of the guide tube and enter the gallbladder. However, the rigidity of the traction guide wire is not enough to support the gallbladder, and the traction guide wire is too thin, which will produce grooves during support, resulting in poor support effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0015] Figure 2 It is a partial cross-sectional view used to show the internal structure of the guide tube and winding tube;
[0016] Figure 3 Used to demonstrate the traction guidewire inside the balloon support tube.
[0017] In the figure: 1. Guide tube; 2. Winding tube; 3. Winding shaft; 31. Knob; 32. Inflation hole; 33. Inflation rubber plug; 4. Airbag support tube; 5. Pull guide wire. DETAILED DESCRIPTION
[0018] The present invention will be further described in detail below with reference to the accompanying drawings.
[0019] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0020] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0021] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0022] Example, see Figure 1-3 A balloon dilatation catheter for hepatobiliary surgery includes a guide tube 1. In order to better extend it from the outside of the body to the gallbladder position, the guide tube 1 is a semi-rigid hose. One end of the guide tube 1 is connected to a winding tube 2, and a winding shaft 3 arranged along its length is rotatably connected inside the winding tube 2. One end of the winding shaft 3 extends out of the winding tube 2 and is provided with a knob 31. The outer periphery of the knob 31 is provided with anti-slip grooves. An airbag support tube 4 is movably arranged in the guide tube 1. The airbag support tube 4 is made of polyurethane. One end of the airbag is connected to the winding shaft 3. The outer end of the knob 31 is provided with an inflation hole 32 that extends into the winding shaft 3 and is connected to the airbag support tube 4. The knob 31 is provided with an inflation rubber plug 33 in the inflation hole 32. The airbag support tube 4 forms a spiral ellipse in the inflated state. A traction guidewire 5 is provided in the airbag catheter. When not subjected to external force, the traction guidewire 5 forms a spiral ellipse, and the two ends of the traction guidewire 5 are respectively connected to the two ends inside the airbag catheter.
[0023] Usage: When in use, the guide tube 1 is inserted into the gallbladder through an endoscope or other means. When the knob 31 is turned to drive the winding tube 2 to rotate, the airbag support tube 4 is loosened from the winding tube 2 and inserted into the gallbladder under the support of the traction guide wire 5. Then, a syringe is used to pass through the inflation rubber stopper 33 to inflate the airbag support tube 4, so that the airbag support tube 4 is inflated and expanded to form a spiral elliptical shape to prop up the gallbladder, expand the operating space and field of view in the gallbladder, and facilitate stone removal.
[0024] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.
Claims
1. A balloon dilatation catheter for hepatobiliary surgery, comprising a guide tube (1), characterized in that: One end of the guide tube (1) is connected to a winding tube (2), and a winding shaft (3) arranged along the length direction thereof is rotatably connected inside the winding tube (2), and one end of the winding shaft (3) is provided with a knob (31) extending out of the winding tube (2). An airbag support tube (4) is movably provided inside the guide tube (1), and one end of the supporting airbag is connected to the winding shaft (3). An inflation hole (32) extending into the winding shaft (3) and connected to the airbag support tube (4) is provided inwardly at the outer end of the knob (31), and the inflation hole (32) is extended into the winding shaft (3) and is connected to the airbag support tube (4). An inflation rubber plug (33) is provided in the inflation hole (32) of the knob (31). The airbag support tube (4) forms a spiral elliptical shape in the inflated state. A traction guide wire (5) is provided inside the airbag catheter, and the two ends of the traction guide wire (5) are respectively connected to the two ends inside the airbag catheter.
2. A balloon dilatation catheter for hepatobiliary surgery according to claim 1, characterized in that: The guide tube (1) is a semi-rigid hose.
3. The balloon dilatation catheter for hepatobiliary surgery according to claim 1, characterized in that: The outer periphery of the knob (31) is provided with anti-slip grooves.
4. The balloon dilatation catheter for hepatobiliary surgery according to claim 1, characterized in that: The airbag support tube (4) is made of polyurethane.
5. The balloon dilatation catheter for hepatobiliary surgery according to claim 1, characterized in that: When no external force is applied, the traction guide wire (5) forms a spiral elliptical shape.