Biliary tract flushing catheter

Abstract

The utility model discloses a biliary tract flushing catheter which comprises a plastic sheath tube, one side of the tail end of the plastic sheath tube is communicated with an injection manifold, the injection manifold is communicated with an injector, a guide steel wire is arranged in an inner tube of the plastic sheath tube in a penetrating mode, and the tail end of the guide steel wire is fixedly connected with a soft plug. The head end of the guide steel wire is fixedly connected with a soft non-transmission wire end, the soft non-transmission wire end comprises a spherical top, the edge of the bottom side of the spherical top is fixedly connected with a water flow reflection skirt edge, the middle of the bottom of the spherical top is fixedly connected with a connecting column, and the guide steel wire is fixedly connected with the bottom end of the connecting column. Through the design of the soft non-transmission wire end, the direction of flushing water flow is changed, the position where the head end of the catheter reaches can be clearly displayed under rays, operability is improved, meanwhile, due to the design of the pipe diameter, it is guaranteed that the catheter smoothly passes through a duodenoscope forceps channel, the flow and the flow direction of the flushing water flow are guaranteed, and flushing is more effective.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a bile duct flushing catheter. Background Art

[0002] Common bile duct stones are a common clinical disease, with different numbers and shapes of stones. Some patients have muddy stones or larger stones. ERCP lithotripsy is currently the preferred treatment method. In addition to conventional lithotripsy methods, larger stones may require lithotripsy and lithotripsy. According to statistics, the recurrence rate of common bile duct stones after lithotripsy ranges from 5% to 40%. The failure to remove residual common bile duct stones during ERCP is one of the main reasons for stone recurrence. In the past, there were two methods for treating residual common bile duct stones: first, water was injected into the bile duct during ERCP through a cutter, a stone basket, etc. to promote the discharge of broken stones, but because the direction of water injection is toward the liver, it is easy to flush the broken stones into the intrahepatic bile duct, which has the opposite effect; second, nasobiliary drainage can be assisted by water injection and flushing, but patients with nasal retention catheters have a higher degree of discomfort, and there is also the possibility of water injection flushing broken stones into the intrahepatic bile duct. Therefore, a simple and effective method for cleaning residual common bile duct stones is needed to effectively reduce the recurrence rate of common bile duct stones and avoid the possibility of residual stones entering the intrahepatic bile duct. Utility Model Content

[0003] In order to solve the problems existing in the above background technology, the utility model provides the following technical solutions:

[0004] The utility model discloses a bile duct flushing catheter, comprising a plastic sheath tube, one side of the tail end of the plastic sheath tube is connected with an injection manifold, the injection manifold is connected with a syringe, a guide wire is inserted into the inner tube of the plastic sheath tube, the tail end of the guide wire is fixedly connected with a soft plug, the head end of the guide wire is fixedly connected with a soft radiopaque head end, the soft radiopaque head end comprises a spherical top, the edge of the bottom side of the spherical top is fixedly connected with a water flow reflection skirt, the middle part of the bottom of the spherical top is fixedly connected with a connecting column, and the guide wire is fixedly connected with the bottom end of the connecting column.

[0005] Furthermore, the angle between the inner side of the water flow reflection skirt and the outer wall of the connecting column is seventy-five degrees.

[0006] Furthermore, a sealing groove is provided on the outer wall of the soft plug.

[0007] Furthermore, the outer diameter of the plastic sheath tube is 3.3MM-3.4MM, and the length of the plastic sheath tube is 180CM.

[0008] Furthermore, the diameter of the water flow reflection skirt is 3.5.MM, the height of the soft non-transmissive head end is 5MM, and the length of the connecting column is 10MM.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the bile duct flushing catheter changes the direction of the flushing water flow through the design of the soft radiopaque head end, and the position reached by the catheter head end can be clearly displayed under the radiograph, thereby improving the operability. At the same time, the design of the tube diameter ensures smooth passage through the duodenoscope clamp channel, and also ensures the flow rate and flow direction of the flushing water flow, thereby making the flushing more effective;

[0010] This type of bile duct flushing catheter can be used to fully flush the common bile duct after the ERCP sampling operation, and can fully clean up the stones and bile sludge that are difficult to develop through radiography, thereby reducing the possibility of recurrence of common bile duct stones. At the same time, the flushing water flow direction is toward the duodenal papilla, and the stones will not enter the intrahepatic bile duct during the flushing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the appearance structure of a bile duct flushing catheter of the utility model;

[0013] Figure 2 It is a schematic diagram of the side section structure of a bile duct flushing catheter of the utility model;

[0014] Figure 3 The utility model is a schematic diagram of flushing water flow of a bile duct flushing catheter.

[0015] In the figure: 1, plastic sheath; 2, injection manifold; 3, syringe; 4, guide wire; 5, soft plug; 6, soft non-radiopaque tip; 61, spherical top; 62, water flow reflection skirt; 63, connecting column; 51, sealing groove. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] like Figures 1 to 3As shown, a bile duct flushing catheter comprises a plastic sheath 1, one side of the tail end of the plastic sheath 1 is connected to an injection manifold 2, the injection manifold 2 is connected to a syringe 3, a guide wire 4 is inserted into the inner tube of the plastic sheath 1, the tail end of the guide wire 4 is fixedly connected to a soft plug 5, the head end of the guide wire 4 is fixedly connected to a soft radiopaque head end 6, the soft radiopaque head end 6 comprises a spherical top 61, the edge of the bottom side of the spherical top 61 is fixedly connected to a water flow reflection skirt 62, the middle of the bottom of the spherical top 61 is fixedly connected to a connecting column 63, and the guide wire 4 is fixedly connected to the bottom end of the connecting column 63.

[0018] When using the bile duct flushing catheter, first pull the guide wire 4 to fix the soft radiopaque tip 6 on the top of the plastic sheath 1, and then insert the top of the plastic sheath 1 into the bile duct from the urethra or surgical incision, at which time the spherical top 61 can smoothly guide the plastic sheath 1 to be inserted therein; under X-ray irradiation, medical staff can clearly observe the insertion depth and specific position of the soft radiopaque tip 6; when the soft radiopaque tip 6 reaches the rear end of the lithotripsy position, keep the plastic sheath 1 fixed, and then continue to push the guide wire 4 into the bile duct. It is extended forward for a distance until the soft plug 5 blocks the rear end of the plastic sheath 1. At this time, a cleaning water flow is injected into the plastic sheath 1 through the syringe 3 connected to the injection manifold 2. The cleaning water flow is ejected from the head end of the plastic sheath 1. When the cleaning water flow is ejected, it is blocked by the water reflection skirt 62. The blocked cleaning water flow flows in the opposite direction. At this time, the direction of the cleaning water flow is toward the outside of the liver, and the stone particles and stone mud at the lithotripsy position are flushed out, so as to avoid the cleaning water flow being toward the liver when the water flow is flushed forward, and the stone particles and stone mud are flushed into it.

[0019] Furthermore, the included angle between the inner side of the water flow reflection skirt 62 and the outer wall of the connecting column 63 is 75 degrees, which can well guide the cleaning water flow and change the direction of the flushing water flow.

[0020] Furthermore, a sealing groove 51 is provided on the outer wall of the soft plug 5 , which can well seal the rear end of the plastic sheath tube 1 to prevent the cleaning water from leaking therefrom.

[0021] Furthermore, the outer diameter of the plastic sheath 1 is 3.3MM-3.4MM, the length of the plastic sheath 1 is 180CM, and the diameter of the plastic sheath 1 is designed to ensure smooth passage through the duodenoscope channel and penetration into the gallbladder duct, while ensuring the flow rate and direction of the flushing water flow, thereby making the flushing more effective.

[0022] Furthermore, the diameter of the water reflection skirt 62 is 3.5MM, which can be placed on the top of the plastic sheath 1, and the diameter is not too large, so it can smoothly pass through the duodenoscope forceps channel and penetrate into the gallbladder duct; the height of the soft non-transmissive head 6 is 5MM, and the length of the connecting column 63 is 10MM, which can make users who perform stone cleaning feel comfortable.

[0023] It should be noted that the utility model is a bile duct flushing catheter. When working, first pull the guide wire 4 to fix the soft radiopaque tip 6 on the top of the plastic sheath 1, and then insert the top of the plastic sheath 1 into the bile duct from the urethra or surgical incision. At this time, the spherical top 61 can smoothly guide the plastic sheath 1 to be inserted therein; under X-ray irradiation, medical staff can clearly observe the insertion depth and specific position of the soft radiopaque tip 6; when the soft radiopaque tip 6 reaches the rear end of the lithotripsy position, keep the plastic sheath 1 fixed, and then The guide wire 4 is further extended forward for a distance until the soft plug 5 blocks the rear end of the plastic sheath 1. At this time, a cleaning water flow is injected into the plastic sheath 1 through the syringe 3 connected to the injection manifold 2. The cleaning water flow is ejected from the head end of the plastic sheath 1. When the cleaning water flow is ejected, it is blocked by the water reflection skirt 62. The blocked cleaning water flow flows in the opposite direction. At this time, the direction of the cleaning water flow is toward the outside of the liver to flush out the stone particles and stone mud at the lithotripsy position, so as to avoid the cleaning water flow being toward the liver when the water flow is flushed forward to flush the stone particles and stone mud into it.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bile duct flushing catheter, characterized in that: The invention comprises a plastic sheath tube (1), one side of the tail end of the plastic sheath tube (1) is connected to an injection manifold (2), the injection manifold (2) is connected to a syringe (3), a guide wire (4) is inserted into the inner tube of the plastic sheath tube (1), the tail end of the guide wire (4) is fixedly connected to a soft plug (5), the head end of the guide wire (4) is fixedly connected to a soft radiopaque head end (6), the soft radiopaque head end (6) comprises a spherical top (61), the edge of the bottom side of the spherical top (61) is fixedly connected to a water flow reflection skirt (62), the middle part of the bottom of the spherical top (61) is fixedly connected to a connecting column (63), and the guide wire (4) is fixedly connected to the bottom end of the connecting column (63).

2. A bile duct flushing catheter according to claim 1, characterized in that: The included angle between the inner side of the water flow reflection skirt (62) and the outer wall of the connecting column (63) is seventy-five degrees.

3. A bile duct flushing catheter according to claim 1, characterized in that: The outer wall of the soft plug (5) is provided with a sealing groove (51).

4. A bile duct flushing catheter according to claim 1, characterized in that: The outer diameter of the plastic sheath tube (1) is 3.3 MM-3.4 MM, and the length of the plastic sheath tube (1) is 180 CM.

5. A bile duct flushing catheter according to claim 1, characterized in that: The diameter of the water flow reflection skirt (62) is 3.5 MM, the height of the soft radiopaque head (6) is 5 MM, and the length of the connecting column (63) is 10 MM.

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