Umbrella-shaped common bile duct calculus removing net basket

Abstract

The utility model discloses an umbrella-shaped common bile duct calculus removal net basket, which relates to the technical field of calculus removal net baskets, and comprises a catheter, a connecting rod, a net basket, a net bag and a joint, one end of the connecting rod is positioned in the catheter, and the outer side of the connecting rod is fixedly connected with a sliding limiting component. The connecting rod is conveniently pushed by arranging the sliding limiting assembly, so that the mesh basket and the net bag matched connector are opened to form an umbrella shape, small stones can pass through a gap formed between the umbrella-shaped edge and the net and enter the net to be taken by the mesh basket, and the problems that due to the fact that metal wires of an existing stone taking mesh basket are prone to transverse displacement, the shapes are not fixed, and the stones are prone to slipping off are solved. Meanwhile, the problems that when the calculus removing balloon is full, the root of a nipple is prone to tearing and bleeding, a patient with common bile duct dilatation is difficult to remove calculus, small calculus is prone to being sucked into the bile duct when the balloon is cleaned, calculus removing fails, inconvenience is caused in the using process, and the using effect of the calculus removing net basket is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stone basket technology field, concretely is an umbrella-shaped gallen duct stone basket. BACKGROUND

[0002] Gallen duct stones are more common in China, with a high incidence. Stone obstruction of the common bile duct can cause a variety of serious complications, such as acute suppurative cholangitis, obstructive jaundice, acute pancreatitis, and other acute diseases. Long-term biliary obstruction can also lead to chronic problems such as gallen duct expansion and cholestatic cirrhosis, posing a significant threat to the health of patients.

[0003] Currently, endoscopic gallen duct stone extraction is the main surgical method for treating gallen duct stones. This method has the advantages of minimal invasion, rapid recovery, and strong repeatability. However, it is not risk-free, and postoperative complications such as reflux cholangitis, hemorrhage, and acute pancreatitis can occur. In terms of surgical instruments, the stone basket and the stone balloon are commonly used. The head of the traditional stone basket is usually composed of four metal wires. After the stones are trapped by the metal wires, they are removed through the duodenal papilla. This method is suitable for larger block-shaped stones. The stone balloon uses the squeezing force between the inflated balloon and the bile duct wall to squeeze the stones out of the gap between the balloon catheter and the papillary sphincter. This method is more suitable for small stones, gravel, or sand-like stones. To reduce the incidence of postoperative reflux cholangitis, small incisions of the duodenal papillary sphincter are more common. When dilating the duodenal papilla, a balloon with a diameter of 1.5 cm or less is usually chosen. Therefore, for stones with a diameter of 1.5 cm or less, a stone basket is usually used to remove them. For stones with a diameter of 1 cm or less, especially gravel or sand-like stones that are difficult to trap with a stone basket, a stone balloon is often used.

[0004] The metal wires of the existing stone basket are prone to lateral displacement, resulting in unstable shape and easy stone slipping. At the same time, the inflation of the stone balloon can easily cause the root of the papilla to tear and bleed. Patients with gallen duct expansion have difficulty removing stones, and small stones can be easily sucked into the bile duct during balloon cleaning, leading to stone removal failure. This causes inconvenience in use and reduces the effectiveness of the stone basket. UTILITY MODEL CONTENTS

[0005] To solve the problems raised in the background art, the utility model aims to provide an umbrella-shaped gallen duct stone basket that has the advantages of rapid and accurate positioning, trapping of block-shaped stones or sand-like stones, saving of operation time, and reduction of gallen duct damage and postoperative complications. It solves the problems of the existing stone basket, such as the metal wires being prone to lateral displacement, resulting in unstable shape and easy stone slipping. At the same time, the inflation of the stone balloon can easily cause the root of the papilla to tear and bleed. Patients with gallen duct expansion have difficulty removing stones, and small stones can be easily sucked into the bile duct during balloon cleaning, leading to stone removal failure. This causes inconvenience in use and reduces the effectiveness of the stone basket.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a kind of umbrella-shaped choledocholithotomy net basket, including catheter, connecting rod, net basket, net bag and joint, the one end of connecting rod is located in the inside of catheter, the outside of connecting rod is fixedly connected with sliding limit component, the outside of net bag is movably installed with net basket, the one end of net bag and net basket is movably installed with joint, the other end of net bag and net basket is movably installed with the other end of connecting rod.

[0007] As the utility model is preferred, the sliding limit component includes sliding block, the outside of catheter is equipped with sliding slot, the inside of sliding slot is slidably connected with the surface of sliding block, the outside of sliding block is fixedly connected with movable ring, the outside of movable ring is fixedly connected with movable block.

[0008] As the utility model is preferred, the side of catheter is movably connected with positioning block, the top of positioning block is equipped with positioning groove.

[0009] As the utility model is preferred, the other end of catheter is communicated with positioning pipe, the other end of positioning pipe is communicated with transparent pipe, the surface of connecting rod is located in the inside of transparent pipe.

[0010] As the utility model is preferred, the outside of movable block is equipped with fit groove, the inside of fit groove is fixedly connected with antiskid block.

[0011] As the utility model is preferred, the maximum diameter of net basket is five centimeters, the length of net basket is ten centimeters, the material of net basket is steel wire.

[0012] As the utility model is preferred, the material of connecting rod is steel wire, the material of catheter and net bag is polyethylene material.

[0013] As the utility model is preferred, the side of positioning pipe is communicated with one-way valve, the side of transparent pipe is provided with scale mark.

[0014] Compared with prior art, the utility model has the beneficial effects as follows:

[0015] 1. The utility model discloses a sliding limit component is set up conveniently to the push of connecting rod, and the cooperation joint of net basket and net bag is opened to present umbrella shape, and the gap between umbrella edge and net is formed to the small calculus, and the purpose of realizing the net basket of taking small calculus is realized, and the net basket and net bag are in the state of being closed in the natural state, and are easy to be taken back in the catheter sheath, and are forced to open under the action of connecting rod after the release of net basket, and under the restriction of umbrella support structure, the net basket is not easy to deform in the process of taking stone, and in the process of closing, handle pressure can realize the large calculus of crushing, avoid damaging the bile duct in the process of taking stone, solve the problems of existing taking stone net basket metal wire easy transverse displacement and not fixed shape, calculus easy to slip, and easy to cause the root of nipple to tear and bleed when taking stone balloon is filled, and the patient with common bile duct expansion has difficulty in taking stone, and small calculus is easy to be sucked into the bile duct in the process of balloon cleaning, leading to the failure of taking stone, causing the inconvenience in use, and reducing the use effect of taking stone net basket, reach fast and accurate positioning, take the lump calculus or silt calculus, save the operation time, reduce the damage of common bile duct and postoperative complications.

[0016] 2. The utility model discloses a sliding limit component is set up, and the surface of sliding block can be limited in sliding in use, and sliding block can stably move in use, and sliding block movable limit can drive movable ring movable limit, and the user needs to move connecting rod in use, can promote movable block to move, and movable block moves and can drive sliding block to move through movable ring, and sliding block moves and can drive connecting rod to move, and connecting rod moves and can be conveniently adjusted, and the moving stability and convenience of connecting rod in use are enhanced.

[0017] 3. The utility model discloses a positioning block and positioning groove are set up, when the user needs to use in use, can first put the thumb into the positioning groove and limit the movable limit of positioning block, and the movable limit of positioning block can limit the movable limit of catheter, and the pipe is fixed in use, and the user can promote movable block to move and adjust through index finger and middle finger. ACCURACY

[0018] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the three -dimensional split structure schematic diagram of the utility model;

[0020] Figure 3 It is the local three -dimensional structure schematic diagram of the utility model.

[0021] In the drawing: 1, catheter; 2, connecting rod; 3, net basket; 4, net bag; 5, joint; 6, sliding limit component; 61, sliding block; 62, sliding groove; 63, movable ring; 64, movable block; 7, positioning block; 8, positioning groove; 9, positioning pipe; 10, transparent pipe; 11, fit groove; 12, antiskid block; 13, check valve; 14, scale mark. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] As shown in the utility model provides a kind of umbrella shape gallbladder stone extraction net basket, including catheter 1, connecting rod 2, net basket 3, net bag 4 and joint 5, one end of connecting rod 2 is located in the inside of catheter 1, the outside of connecting rod 2 is fixedly connected with sliding limit component 6, net basket 3 is movably installed at the outside of net bag 4, and one end of net bag 4 and net basket 3 is movably installed with joint 5, and the other end of net bag 4 and net basket 3 is movably installed with the other end of connecting rod 2. Figures 1 to 3 As shown in the utility model provides a kind of umbrella shape gallbladder stone extraction net basket, including catheter 1, connecting rod 2, net basket 3, net bag 4 and joint 5, one end of connecting rod 2 is located in the inside of catheter 1, the outside of connecting rod 2 is fixedly connected with sliding limit component 6, net basket 3 is movably installed at the outside of net bag 4, and one end of net bag 4 and net basket 3 is movably installed with joint 5, and the other end of net bag 4 and net basket 3 is movably installed with the other end of connecting rod 2.

[0024] Figure 2 As shown in the utility model provides a kind of umbrella shape gallbladder stone extraction net basket, including catheter 1, connecting rod 2, net basket 3, net bag 4 and joint 5, one end of connecting rod 2 is located in the inside of catheter 1, the outside of connecting rod 2 is fixedly connected with sliding limit component 6, net basket 3 is movably installed at the outside of net bag 4, and one end of net bag 4 and net basket 3 is movably installed with joint 5, and the other end of net bag 4 and net basket 3 is movably installed with the other end of connecting rod 2.

[0025] As a kind of technical optimization scheme of the utility model, by setting sliding limit component 6, sliding slot 62 can be surface sliding limit of sliding block 61 in use, so that sliding block 61 can stably move in use, and sliding block 61 movable limit can drive movable ring 63 to carry out movable limit, when user needs to move connecting rod 2 in use, it can promote movable block 64 to move, movable block 64 moves can drive sliding block 61 to move by movable ring 63, and sliding block 61 moves can drive connecting rod 2 to move, and connecting rod 2 moves can be conveniently adjusted, the moving stability and convenience of connecting rod 2 in use are enhanced.

[0026] As shown in the utility model provides a kind of umbrella shape gallbladder stone extraction net basket, including catheter 1, connecting rod 2, net basket 3, net bag 4 and joint 5, one end of connecting rod 2 is located in the inside of catheter 1, the outside of connecting rod 2 is fixedly connected with sliding limit component 6, net basket 3 is movably installed at the outside of net bag 4, and one end of net bag 4 and net basket 3 is movably installed with joint 5, and the other end of net bag 4 and net basket 3 is movably installed with the other end of connecting rod 2. Figure 1 As a kind of technical optimization scheme of the utility model, by setting positioning block 7 and positioning slot 8, positioning block 7 can be movably limited when user needs to use in use, positioning slot 8 is first inserted into positioning block 7, and positioning block 7 movably limited can movably limit catheter 1, so that pipe is fixed in use, and user can promote movable block 64 to move by index finger and middle finger and adjust.

[0027] As shown in the utility model provides a kind of umbrella shape gallbladder stone extraction net basket, including catheter 1, connecting rod 2, net basket 3, net bag 4 and joint 5, one end of connecting rod 2 is located in the inside of catheter 1, the outside of connecting rod 2 is fixedly connected with sliding limit component 6, net basket 3 is movably installed at the outside of net bag 4, and one end of net bag 4 and net basket 3 is movably installed with joint 5, and the other end of net bag 4 and net basket 3 is movably installed with the other end of connecting rod 2.

[0028] Figure 2 ​​The other end of the catheter 1 is communicated with a positioning tube 9, the other end of the positioning tube 9 is communicated with a transparent tube 10, and the surface of the connecting rod 2 is located inside the transparent tube 10.

[0029] As a technical optimization scheme of the utility model, the positioning tube 9 and the transparent tube 10 can limit the movement of the connecting rod 2 in use, so that the connecting rod 2 can move stably in use, and the net basket 3 and the net bag 4 can be pushed and moved conveniently.

[0030] Reference Figure 2 The outer side of the movable block 64 is provided with a fitting groove 11, and the fitting groove 11 is fixedly connected with an anti-skid block 12 inside.

[0031] As a technical optimization scheme of the utility model, the fitting groove 11 can be fitted with the fingers of a user in use, so that the movable block 64 can be moved conveniently in use, and the anti-skid block 12 can prevent slipping in use and reduce the influence caused by hand slipping.

[0032] Reference Figure 1 The maximum diameter of the net basket 3 is five centimeters, the length of the net basket 3 is ten centimeters, and the material of the net basket 3 is steel wire.

[0033] As a technical optimization scheme of the utility model, the net basket 3 is provided, the net basket 3 made of steel wire has certain strength and elasticity, can keep the shape stable during the process of taking stones, and can be deformed appropriately to adapt to stones of different sizes and shapes.

[0034] Reference Figure 1 The material of the connecting rod 2 is steel wire, and the materials of the catheter 1 and the net bag 4 are polyethylene materials.

[0035] As a technical optimization scheme of the utility model, the connecting rod 2, the catheter 1 and the net bag 4 are provided, the connecting rod 2 is made of steel wire, has certain strength and elasticity in use, can keep the shape stable during use, the catheter 1 and the net bag 4 made of polyethylene materials have good flexibility, biocompatibility and chemical stability, and can reduce the stimulation and damage to the common bile duct tissue.

[0036] Reference Figure 2 One side of the positioning tube 9 is communicated with a one-way valve 13, and one side of the transparent tube 10 is provided with a scale mark 14.

[0037] As a technical optimization scheme of the utility model, the one-way valve 13 can prevent liquid or gas from flowing backward during observation or operation, so as to ensure the safety of the operation, and the scale mark 14 can help doctors to intuitively understand the advancing depth of the transparent tube 10 during operation, so as to improve the accuracy of operation.

[0038] The working principle and use process of the utility model:

[0039] Preoperative preparation, strict disinfection and inspection of surgical instruments are carried out to ensure that the umbrella-shaped choledocholithotomy net basket 3 is intact, especially the key positions of the catheter 1, the connecting rod 2, the net basket 3, the net bag 4, the joint 5 and the sliding limiting assembly 6, so that the functions are normal. At the same time, the auxiliary components such as the positioning block 7, the positioning groove 8, the positioning tube 9, the transparent tube 10, the one-way valve 13 and the scale mark 14 are checked to ensure that they work normally, so as to make full preparation for the smooth operation.

[0040] Insert the common bile duct, place the patient in a suitable surgical position, usually in a supine position, then insert the catheter 1 along the choledochoscope into the common bile duct. During the insertion process, the doctor can accurately control the depth of the catheter 1 by observing the position of the connecting rod 2 in the transparent tube 10 and the scale mark 14, and ensure that the catheter 1 accurately reaches the vicinity of the stone position.

[0041] When the catheter 1 approaches the stone position, the positioning block 7 and the positioning groove 8 are used to fix the catheter 1 at the appropriate position. Specifically, the doctor inserts the thumb into the positioning groove 8 to limit the positioning block 7, so that the catheter 1 remains stable and avoids unnecessary movement in subsequent operations.

[0042] The net basket 3 is unfolded to take out the stone. After fixing the catheter 1, the doctor operates the sliding limiting assembly 6 by pushing the movable block 64 with his fingers. When the movable block 64 moves, the sliding block 61 is driven to slide in the sliding groove 62 outside the catheter 1 through the movable ring 63. The sliding of the sliding block 61 drives the connecting rod 2 to move in the catheter 1, and in turn pushes the net basket 3 and the net bag 4 to stretch out of the transparent tube 10. Since one end of the net basket 3 and the net bag 4 is connected with the joint 5, when the connecting rod 2 pushes the net basket 3 and the net bag 4, the joint 5 is lifted, and the net basket 3 and the net bag 4 gradually open in the common bile duct to form an umbrella shape.

[0043] Under the assistance of the choledochoscope, the doctor accurately adjusts the position of the net basket 3, so that the stone is located between the net basket 3 and the net bag 4. Smaller stones can enter the net through the gap between the net basket 3 and the net bag 4. For larger stones, the doctor applies appropriate tension to the connecting rod 2 through the handle, so that the net basket 3 generates a certain pressure on the surface of the stone, and the strength and elasticity of the net basket 3 steel wire material are used to break the larger stone, and the broken stone enters the net.

[0044] The stone is taken out. After the stone is successfully taken out or broken and enters the net basket 3, the doctor reversely operates the sliding limiting assembly 6, that is, pulls the movable block 64 to make the connecting rod 2 drive the net basket 3 and the net bag 4 to gradually tighten, so as to tightly wrap the stone in the net.

[0045] Then slowly take out the whole device including catheter 1, the core in the basket 3 and the extracted calculus from the common bile duct, complete the calculus operation.

[0046] In summary: the umbrella-shaped common bile duct calculus basket, by setting up the sliding limit component 6 conveniently push the connecting rod 2, make the basket 3 and the mesh bag 4 cooperation joint 5 open to umbrella-shaped, smaller calculus can pass through the umbrella-shaped edge and the net between the gap, into the net realizes the basket 3 and takes small calculus, the purpose of lithotripsy, the basket 3 and the mesh bag 4 in the natural state is tight, easy to retract into the catheter 1 sheath, after the release of the basket 3, under the action of the connecting rod 2, forced to open, under the restriction of umbrella-shaped support structure, the basket 3 is not easy to deform in the process of taking stone, and in the process of tightening, handle pressure can realize larger calculus lithotripsy, avoid damage to the biliary tract in the process of taking stone, solve the existing calculus basket wire easy to transverse displacement shape not fixed, calculus easy to slip, at the same time, the calculus balloon is filled, easy to cause the root of the nipple to tear and bleed, the common bile duct expansion patient calculus difficult, balloon cleaning small calculus easy to be sucked into the bile duct and lead to calculus failure, caused the inconvenience in use, reduced the use effect of calculus basket problem.

[0047] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An umbrella shaped choledocholithotomy basket comprising a catheter (1), a connecting rod (2), a basket (3), a net bag (4) and a joint (5), characterized in that: One end of the connecting rod (2) is located inside the catheter (1), the outer side of the connecting rod (2) is fixedly connected with the sliding limiting assembly (6), the mesh basket (3) is movably installed outside the mesh bag (4), one end of the mesh bag (4) and the mesh basket (3) is movably installed with the joint (5), the other end of the mesh bag (4) and the mesh basket (3) is movably installed with the other end of the connecting rod (2).

2. The umbrella shaped choledocholithotomy basket according to claim 1, wherein: The sliding limiting assembly (6) comprises a sliding block (61), the outer side of the catheter (1) is provided with a sliding groove (62), the inner side of the sliding groove (62) is slidably connected with the surface of the sliding block (61), the outer side of the sliding block (61) is fixedly connected with a movable ring (63), the outer side of the movable ring (63) is fixedly connected with a movable block (64).

3. The umbrella shaped choledocholithotomy basket according to claim 1, wherein: The catheter (1) is movably connected with a positioning block (7) on one side, and the top of the positioning block (7) is provided with a positioning groove (8).

4. The umbrella shaped choledocholithotomy basket according to claim 1, wherein: The other end of the catheter (1) is communicated with a positioning pipe (9), the other end of the positioning pipe (9) is communicated with a transparent pipe (10), and the surface of the connecting rod (2) is located in the transparent pipe (10).

5. The umbrella shaped choledocholithotomy basket according to claim 2, wherein: The outer side of the movable block (64) is provided with a fitting groove (11), and the inner side of the fitting groove (11) is fixedly connected with an anti-skid block (12).

6. The umbrella shaped choledocholithotomy basket according to claim 1, wherein: The maximum diameter of the mesh basket (3) is five centimeters, the length of the mesh basket (3) is ten centimeters, and the material of the mesh basket (3) is steel wire.

7. The umbrella shaped choledocholithotomy basket according to claim 1, wherein: The material of the connecting rod (2) is steel wire, and the materials of the catheter (1) and the mesh bag (4) are polyethylene materials.

8. The umbrella shaped gallbladder stone extraction basket of claim 4, wherein: The one-way valve (13) is communicated with the positioning pipe (9) on one side, and the transparent pipe (10) is provided with a scale mark (14) on one side.

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