Biliary tract calculus removing channel device

Abstract

The utility model provides a biliary tract calculus removing channel device, and particularly relates to the field of medical instruments. Aiming at the problems of gas leakage and stability of a calculus removing channel caused by a traditional calculus removing channel device, the utility model provides the calculus removing channel device for the biliary tract, which comprises a calculus removing channel used for entering a choledochoscope and performing calculus removing operation, and a sealing lead-in assembly is connected to an inlet of the calculus removing channel. The abdominal wall section of the calculus removing channel is provided with a fixing assembly for preventing the calculus removing channel from shifting or leaking air in the operation process. According to the device, through the sealing guide-in assembly and the fixing device, the requirement for repeated positioning in the operation is reduced, and the air tightness in the operation process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and specifically relates to a biliary tract stone removal channel device. BACKGROUND

[0002] Biliary tract stones are common digestive system diseases, usually formed by abnormal deposition of bile components in the gallbladder, bile duct, and other parts, leading to biliary obstruction and inflammation. If not treated in time, biliary tract stones can cause serious complications such as cholecystitis, cholangitis, and pancreatitis, and even endanger life. Choledocholithotomy is a common method for treating biliary tract stones at present and is widely used in clinical practice. Choledocholithotomy not only effectively removes stones in the biliary tract, but also completes the operation with minimal invasiveness, has faster recovery and lower complication risk than traditional open surgery, and is widely used in minimally invasive treatment of biliary tract stones.

[0003] However, the traditional biliary tract stone removal channel device still faces some technical challenges. First, although the existing device can complete the basic stone removal function, due to the lack of sufficient stability and air tightness, the positioning of the stone removal channel often needs to be adjusted repeatedly during the operation, leading to prolonged operation time and increased risk of anesthesia for the patient. In addition, most traditional stone removal channel devices rely on the fine operation of the channel by the doctor and the adjustment of the patient's body position during the operation, but due to the lack of effective fixation mechanism, the channel stability is poor and prone to displacement, thereby increasing the operation difficulty and reducing the accuracy and safety of the operation. SUMMARY

[0004] In view of the above-mentioned problems of gas leakage and stone removal channel stability caused by the traditional biliary tract stone removal channel device, the utility model aims to provide a biliary tract stone removal channel device. The device of the utility model reduces the need for repeated positioning during the operation and ensures the air tightness during the operation through the sealing introduction assembly and the fixing device.

[0005] The main idea of the technical solution adopted by the utility model is as follows: the device realizes the stable fixation of the stone removal channel by combining the design of the fixed balloon and the inflation and deflation mechanism, and adjusts the inflation state of the fixed balloon through inflation to make it tightly contact with the biliary tract wall, thereby fixing the stone removal channel, avoiding the frequent positioning operation in the traditional stone removal process, simplifying the operation steps and shortening the operation time. At the same time, the air tightness design of the sealing introduction assembly effectively prevents the leakage of abdominal cavity gas, ensures the stability of gas pressure during the operation, and maintains clear surgical field. Through these designs, the stone removal channel can maintain a stable position during the entire operation, reducing the operation difficulty caused by channel displacement, thereby improving the accuracy and safety of the operation.

[0006] The technical purpose of the utility model is realized through the following technical solutions:

[0007] A biliary tract stone removal channel device comprises a stone removal channel for biliary tract mirror access and stone removal operation, characterized in that a sealing introduction assembly is connected at the entrance of the stone removal channel, and a fixing assembly is arranged on the abdominal wall section of the stone removal channel to prevent the stone removal channel from being displaced or leaking air during the operation.

[0008] To achieve the above technical solution, a further preferred solution is that the sealing introduction assembly comprises a fixing member and a sealing member connected to the inner wall of the fixing member.

[0009] According to the above technical solution, further, the sealing member comprises a first sealing member fixedly connected to the fixing member and a second sealing member slidingly connected to the fixing member.

[0010] Further, a push-pull member is arranged on the second sealing member, which is used to pull the second sealing member to slide along the axial direction of the fixing member.

[0011] According to the above technical solution, further, the fixing assembly comprises a fixing balloon and a gas charging and discharging mechanism connected to the fixing balloon, and the gas charging and discharging mechanism is also connected to the pipe wall of the stone removal channel.

[0012] Still further, the gas charging and discharging mechanism comprises a gas delivery pipe, a gas charging member and an adjusting valve, the two ends of the gas delivery pipe are respectively connected with the gas charging member and the fixing balloon, and the adjusting valve is arranged on the gas delivery pipe.

[0013] By adopting the above technical solution, the utility model has the following technical effects:

[0014] By arranging the fixing device and combining the inflated fixing balloon with the gas charging and discharging mechanism, the position of the stone removal channel can be effectively stabilized, the need for repeated adjustment and positioning is avoided, the operation time is reduced, the operation accuracy of the biliary tract mirror is ensured, and the anesthesia risk is reduced. In addition, after the fixing balloon is inflated, it is in close contact with the biliary tract wall, the stability of the channel is enhanced, and the difficulty in operation caused by displacement of the channel during the operation is reduced.

[0015] By arranging the sealing introduction assembly, the air tightness in the biliary tract during the biliary tract stone removal operation can be effectively maintained, so as to maintain a proper pressure difference, prevent gas leakage, and ensure the stability of the operation space. This design ensures the expansion of the biliary tract in the inflated state, fully expands the biliary tract wall, provides a clear operation field, and facilitates the operation of the stone removal instrument. At the same time, the sealing introduction assembly reduces the loss of gas in the biliary tract, avoids the collapse of the biliary tract caused by insufficient pressure, reduces the difficulty of the operation, and improves the safety and efficiency of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced as follows.

[0017] Figure 1 Figure of application of the biliary tract stone channel device of the utility model;

[0018] Figure 2 Whole structure schematic view of the biliary tract stone channel device of the utility model;

[0019] Figure 3 Structure schematic view of the fixed assembly of the utility model;

[0020] Figure 4 Structure schematic view of the fixed balloon of the utility model;

[0021] Figure 5 Structure schematic view of the sealed lead-in assembly of the utility model;

[0022] Figure 6 Internal structure view of the sealed lead-in assembly of the utility model;

[0023] Figure 7 Detail view of the connection of the second sealing member and the fixed member of the utility model;

[0024] In the figure, 1-stone channel; 2-sealed lead-in assembly; 21-fixed member; 211-mounting hole; 212-slotted; 22-sealing member; 221-first sealing member; 222-second sealing member; 2221-sliding piece; 23-pushing and pulling member; 3-fixed assembly; 31-fixed balloon; 311-inflation hole; 32-gas charging and discharging mechanism; 321-gas conveying pipe; 322-gas charging member; 323-regulating valve; 4-cholangioscope. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments, not all the embodiments.

[0026] Reference Figures 1-7 The application discloses a biliary tract stone channel device, which comprises a stone channel 1 for the entry of a cholangioscope 4 and the performance of a stone removal operation, characterized in that a sealed lead-in assembly 2 is connected to the entrance of the stone channel 1, and a fixed assembly 3 is arranged on the abdominal wall section of the stone channel 1 to prevent the stone channel 1 from being displaced or leaking air during the operation.

[0027] As Figure 1The stone extraction channel 1 provides a stable operating path for the choledochoscope 4. The stone extraction channel 1 is in the shape of a long tube, with an inner diameter of 8-10 mm in general, and an outer diameter and length customized according to the needs of the operation. The tube wall has a certain flexibility to adapt to the anatomical structure of the bile duct and facilitate the operation of the doctor. The stone extraction channel 1 is made of biocompatible medical polyurethane (PU) or silicone material, which has corrosion resistance and good flexibility, while ensuring air tightness and durability.

[0028] Specifically, the inlet end of the stone extraction channel 1 is connected to the patient's abdominal cavity through the sealed introduction assembly 2, ensuring air tightness and avoiding air leakage during the operation. The abdominal wall section is designed with a fixing assembly 3 to fix the position of the stone extraction channel, preventing it from shifting during the operation. The length of the stone extraction channel 1 is generally 30-60 cm, which can easily reach the target area of the bile duct during the operation, ensuring the smooth entry of the choledochoscope 4 and the stone extraction operation.

[0029] It is worth noting that in the operation of bile duct stone extraction, it is necessary to inflate air or carbon dioxide gas to make the pressure in the bile duct slightly higher than the normal state, thereby expanding the bile duct to form an operating space for the operation. The inflated bile duct is slightly swollen compared to the normal state, which expands the bile duct wall and reduces wrinkles, making it easier for surgical instruments to enter and operate. This expanded space is kept stable by pressure control, providing a clear and spacious operating area for the doctor to observe the inside of the bile duct and perform corresponding operations.

[0030] If the air tightness of the bile duct is not effectively controlled, the pressure in the bile duct will decrease, resulting in a decrease or loss of inflation effect. At this time, the operating space of the bile duct will collapse, limiting the operation of the instrument and increasing the difficulty of the operation. Therefore, air tightness is crucial for bile duct stone extraction surgery, and the air tightness introduction assembly 2 at the inlet end of the stone extraction channel 1 is designed to maintain this pressure difference and ensure the stability of the operating space.

[0031] As shown in the drawings, Figures 5-7 The sealed introduction assembly 2 includes a fixed part 21 and a sealing part 22 connected to the inner wall of the fixed part 21. The sealing part 22 includes a first sealing part 221 fixedly connected to the fixed part 21 and a second sealing part 222 slidably connected to the fixed part 21. The second sealing part 222 is provided with a push-pull part 23 for sliding the second sealing part 222 along the axial direction of the fixed part 21.

[0032] Specifically, the fixed part 21 is generally in the shape of a ring and is fixed to the outer wall of the stone extraction channel 1. The fixed part 21 is made of medical polyurethane or similar materials with strong mechanical strength and flexibility. One side of the fixed part 21 is provided with a mounting hole 211 that penetrates the fixed part 21, and the mounting hole 211 is used to connect the fixing assembly 3 to the fixed part 21.

[0033] As Figure 6 , the sealing member 22 includes two parts: a first sealing member 221 and a second sealing member 222. When closed, the two sealing members 22 will only cover the outer wall of the choledochoscope 4, forming an airtight barrier to prevent abdominal cavity gas leakage.

[0034] Specifically, the first sealing member 221 is fixedly connected with the fixing member 21, usually made of elastic materials such as rubber or silicone, with good sealing performance. The first sealing member 221 is located on the inner wall of the fixing member 21, and contacts the choledochoscope 4 through a sealing ring, ensuring the airtightness between the choledochoscope 4 and the sealing assembly.

[0035] Specifically, the second sealing member 222 is slidingly connected with the fixing member 21, and can freely slide along the axial direction of the fixing member 21. This design allows the second sealing member 222 to be freely adjusted according to the in-out of the choledochoscope 4 during the operation, maintaining the airtightness.

[0036] Specifically, the fixing member 21 is provided with a cavity at one end of the second sealing member 222, which can accommodate the second sealing member 222. The size and shape of the cavity are accurately designed to ensure that the second sealing member 222 can slide smoothly and without obstruction. The inner wall size of the cavity is slightly larger than the outer diameter of the second sealing member 222 itself, providing enough space to accommodate the sliding of the second sealing member 222 in the axial direction.

[0037] As Figure 7 , the bottom of the cavity of the fixing member 21 is designed with a sliding groove 212, which extends along the axial direction and cooperates with the sliding sheet 2221 at the lower part of the second sealing member 222. The shape of the sliding groove 212 is generally U-shaped or V-shaped, which can accurately guide the sliding of the second sealing member 222. The sliding sheet 2221 is made of a material with certain elasticity (such as polyurethane or silicone), which is tightly embedded in the sliding groove 212, ensuring the smoothness of the sliding. The sliding sheet 2221 not only can slide freely, but also is designed with a moderate friction force, providing a certain resistance, so that the second sealing member 222 can remain stationary without sliding when no external force is applied.

[0038] Through this design, the second sealing member 222 can be accurately adjusted when needed during the operation, and the friction force between the sliding sheet 2221 and the sliding groove 212 effectively prevents accidental movement of the sealing member 22 when no external force is applied, thereby ensuring that the sealing guide assembly 2 always maintains stable airtightness during the operation, avoiding gas leakage, and improving the safety and efficiency of the operation.

[0039] Specifically, the push-pull piece 23 is connected with the second sealing piece 222 through the outer wall of the fixing piece 21, and through the operation of the doctor, the second sealing piece 222 can be slid along the axial direction of the fixing piece 21, so as to adjust the contact state between the sealing piece 22 and the choledochoscope 4. When it is necessary to operate the choledochoscope 4, the push-pull piece 23 can pull the second sealing piece 222 to retreat, allowing the choledochoscope 4 to smoothly enter or exit; after the operation is completed, the push-pull piece 23 can push the second sealing piece 222 back to the original position, restoring the sealing state.

[0040] Specifically, the fixing assembly 3 includes a fixing balloon 32 and a gas charging and discharging mechanism 32 connected to the fixing balloon 32, and the gas charging and discharging mechanism 32 is also connected to the wall of the stone removal channel 1. Specifically, the fixing balloon 32 is the main component for fixing the stone removal channel 1 in the biliary tract. Its shape is usually circular or elliptical, made of flexible medical materials such as silicone or polyurethane, and has good swelling property. The fixing balloon 32 is located at the abdominal wall segment of the stone removal channel 1 and can be inflated to tightly fit the biliary tract wall, thereby preventing the stone removal channel 1 from shifting or moving during the operation.

[0041] It is worth noting that the fixing balloon 32 is located at the abdominal wall segment of the stone removal channel 1 and can tightly fit the biliary tract wall after inflation. The fixing balloon 32 is provided with a gas charging hole 311, and when the gas charging and discharging mechanism is connected to the gas charging hole 311, the fixing balloon 32 will gradually swell and form a tight contact with the gap between the biliary tract wall and the stone removal channel 1 when gas is injected into the fixing balloon 32. Due to the flexibility and elasticity of the balloon material, the balloon can adapt to the shape of the biliary tract after swelling and provide uniform pressure, ensuring that the gas in the biliary tract does not leak through the connection part of the stone removal channel 1.

[0042] In addition, during the operation, the stone removal channel 1 may be slightly shifted or have a small leakage channel due to operation. The inflation of the fixing balloon 32 can immediately seal these potential leakage paths, ensuring that neither pressure fluctuations during operation nor changes in external environment will cause gas leakage or risk of infection. It provides an additional isolation barrier for the entire biliary system.

[0043] Specifically, the gas charging and discharging mechanism 32 is responsible for controlling the inflation and deflation process of the fixing balloon 32, ensuring that the swelling and shrinking of the balloon can be adjusted as needed. The gas charging and discharging mechanism 32 includes a gas delivery pipe 321, a gas charging piece 322 and a regulating valve 323, and the gas delivery pipe 321 is used to deliver gas to the gas charging piece 322 and the fixing balloon 32. The two ends of the gas delivery pipe 321 are respectively connected to the gas charging piece 322 and the fixing balloon 32, ensuring smooth gas transmission.

[0044] Specifically, the inflator 322 is located at the other end of the gas delivery tube 321, responsible for introducing gas into the fixation balloon 32, thereby controlling the inflation state of the balloon. The inflator 322 is usually a joint device with a valve, which can ensure that gas enters the fixation balloon 32 only when needed.

[0045] Specifically, the regulating valve 323 is arranged on the gas delivery tube 321, used to accurately regulate the flow and pressure of the gas. Through the regulating valve 323, the inflation speed and expansion degree of the fixation balloon 32 can be controlled, ensuring that it maintains appropriate stability during the operation.

[0046] The workflow of this embodiment is as follows:

[0047] The doctor prepares the biliary stone extraction channel 1 device and ensures that all components (such as the stone extraction channel 1, the sealed introduction assembly 2, the fixation assembly 3, the inflation and deflation mechanism 32, etc.) are installed correctly. The fixation balloon 32 is connected with the inflation and deflation mechanism 32, ensuring that the inflation system can be used normally.

[0048] Through laparoscopy or other methods, the doctor introduces the inlet end of the stone extraction channel 1 into the patient's biliary tract, and extends the choledochoscope 4 into the stone extraction channel 1. At this time, the sealed introduction assembly 2 ensures the airtightness between the biliary tract and the outside world, preventing gas leakage. The fixation balloon 32, after initial inflation, contacts the biliary tract wall, stabilizing the position of the stone extraction channel 1.

[0049] The doctor controls the gas flow through the regulating valve 323 in the inflation and deflation mechanism 32, injects gas into the fixation balloon 32, and makes it expand and tightly fit the biliary tract wall. The inflated balloon fixes the stone extraction channel 1, preventing it from shifting, and at the same time ensures that an airtight seal is formed between the biliary tract and the outside environment, avoiding gas leakage.

[0050] After the fixation balloon 32 is inflated, the doctor uses the choledochoscope 4 to perform stone extraction. The airtightness provided by the sealed introduction assembly 2 ensures that the choledochoscope 4 smoothly enters the biliary tract, avoiding gas leakage during operation. During the operation, the doctor can further adjust the inflation amount of the fixation balloon 32 through the inflation and deflation mechanism 32 to ensure that the stone extraction channel 1 remains stable and airtight during the operation.

[0051] After the stone extraction operation is completed, the doctor releases the gas in the fixation balloon 32 by adjusting the regulating valve 323, causing the balloon to shrink. Then, the push-pull piece 23 pulls the second sealing piece 222 backward, removes the choledochoscope 4, and finally carefully removes the stone extraction channel 1 and pulls it backward, completing the operation.

[0052] It should be clear that the above detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

Claims

1. A gallstone removal access device comprising a gallstone removal access (1) for the entry of a choledochoscope (4) and the performance of a gallstone removal operation, characterized in that, The entrance of the stone extraction channel (1) is connected with a sealing introduction assembly (2), and the abdominal wall section of the stone extraction channel (1) is provided with a fixing assembly (3) for preventing the stone extraction channel (1) from being displaced or leaking during the operation.

2. A device for removing gallstones from a biliary tract according to claim 1, characterized in that The sealing introduction assembly (2) comprises a fixing member (21) and a sealing member (22) connected to the inner wall of the fixing member (21).

3. A gallstone removal access device according to claim 2, wherein, The sealing member (22) comprises a first sealing member (221) fixedly connected to the fixing member (21) and a second sealing member (222) slidingly connected to the fixing member (21).

4. A gall stone removal access device according to claim 3, wherein, The second sealing member (222) is provided with a push-pull member (23) for pulling the second sealing member (222) to slide along the axial direction of the fixing member (21).

5. The device of claim 1, wherein, The fixing assembly (3) comprises a fixing balloon (31) and a gas charging and discharging mechanism (32) connected to the fixing balloon (31), and the gas charging and discharging mechanism (32) is also connected to the pipe wall of the stone extraction channel (1).

6. A gall stone removal access device according to claim 5, wherein, The gas charging and discharging mechanism (32) comprises a gas conveying pipe (321), a gas charging member (322) and an adjusting valve (323), the two ends of the gas conveying pipe (321) are respectively connected with the gas charging member (322) and the fixing balloon (31), and the gas conveying pipe (321) is provided with the adjusting valve (323).

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