Hard inner guiding device under ERCP

Abstract

The utility model discloses a hard internal guiding device under ERCP, which belongs to the technical field of medical ERCP endoscopes, and comprises a hard catheter, the hard catheter is composed of a catheter body, a head end and a tail end, the head end is arranged at the front end of the hard catheter, the tail end is arranged at the rear end of the hard catheter, the head end is fixedly connected with a blunt short tube, and the blunt short tube is fixedly connected with the tail end of the hard catheter. The inner part of the blunt short tube is communicated with the inner part of the hard catheter, the tail end of the blunt short tube is fixedly connected with a thickened holding connecting tube, the inner part of the thickened holding connecting tube is communicated with the inner part of the hard catheter, and the outer end of the thickened holding connecting tube is sleeved with a thickened lantern ring. By means of the structure, counter-acting force of the side wall can be provided between the duodenoscope and the nipple or in the expanded bile duct, force is transmitted to the head end of the instrument, accordingly, supporting force of the side wall of the instrument is provided, the force can be transmitted to the head, the operation difficulty of ERCP can be lowered, and the success rate of some complex ERCP can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of medical ERCP endoscopes, and more specifically to a hard inner guiding device under ERCP. Background Art

[0002] Endoscopic retrograde cholangiopancreatography (ERCP) is a technique that uses a combination of endoscopy and X-ray techniques to diagnose and treat certain problems with the bile duct or pancreatic duct system. Through the endoscope, the doctor can see the inside of the stomach and duodenum and inject contrast dye into the ducts of the bile duct and pancreas so that they can be seen on the X-ray pictures.

[0003] At present, ERCP technology is relatively mature and can be used for the diagnosis and treatment of hepatobiliary and pancreatic stones and tumor diseases. During the diagnosis and treatment process, a guide wire needs to be left in place, and the dilator, stone removal basket, stent, etc. are placed in the appropriate position according to the guide wire. When these instruments are inside the mirror body, the inner wall of the mirror cavity can provide a reaction force to transmit the force forward. However, when the above instruments come out of the mirror body and enter the duodenum and bile duct, the duodenal papilla and the bile duct wall provide a reaction force to transmit the force. However, for some patients, due to the above prompts: 1. The distance between the duodenoscope and the nipple is too far due to nipple distortion, 2. The bile duct is obviously dilated, and 3. The bile duct is at a significantly acute angle, it is impossible to provide an effective reaction force and transmit the force to the instrument head.

[0004] To this end, the utility model proposes a rigid inner guide device under ERCP. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a rigid internal guide device under ERCP, which can provide a reaction force of the side wall between the duodenoscope and the nipple or in the dilated bile duct, and transmit the force to the head end of the instrument, thereby providing support force for the side wall of the instrument, so that the force can be transmitted to the head, which can reduce the difficulty of ERCP operation and improve the success rate of some complex ERCP. The entire rigid internal guide device is made of 04 stainless steel, similar to a threaded structure, and can be bent by itself. The inner diameter is 2.8mm, the outer diameter is 3.6mm, and the length is 1.8m. A blunt short tube is provided at the head end to prevent scratching the intestinal tract and bile duct, and a thickened holding structure is provided at the end to prevent the entire guide tube from falling into the cavity of the duodenoscope.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A rigid inner guide device under ERCP comprises a rigid catheter, which is composed of a tube body, a head end and a tail end. The head end is arranged at the front end of the rigid catheter, and the tail end is arranged at the rear end of the rigid catheter. The head end is fixedly connected with a blunt short tube, and the interior of the blunt short tube is connected with the interior of the rigid catheter. The tail end is fixedly connected with a thickened holding connecting tube, and the interior of the thickened holding connecting tube is connected with the interior of the rigid catheter. The outer end of the thickened holding connecting tube is sleeved with a thickened collar.

[0010] Furthermore, the hard catheter, blunt short tube and thickened holding connecting tube are all made of 04 stainless steel.

[0011] Furthermore, the inner diameter of the hard catheter is 2.8 mm, the outer diameter of the hard catheter is 3.6 mm, and the length of the hard catheter is 1.8 m.

[0012] Furthermore, the blunt short tube is a hard inner guide device under ERCP, wherein the tube mirror is an annular stainless tube, and the outer diameter of the front end of the blunt short tube is smaller than the outer diameter of the hard catheter.

[0013] Furthermore, the outer diameters of the thickened holding connecting tube and the thickened sleeve are both larger than the outer diameter of the hard catheter.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] (1) The present invention, through a rigid inner guide device, can provide a reaction force of the side wall between the duodenoscope and the papilla or in the dilated bile duct, and transmit the force to the head end of the instrument, thereby providing a supporting force for the side wall of the instrument, so that the force can be transmitted to the head, which can reduce the difficulty of ERCP operation and improve the success rate of some complex ERCP.

[0017] (2) In the present invention, the entire hard inner guide device is made of 04 stainless steel, similar to a threaded structure, and can be bent by itself. The inner diameter is 2.8 mm, the outer diameter is 3.6 mm, and the length is 1.8 m. A blunt short tube is provided at the head end to prevent scratching of the intestinal tract and bile duct, and a thickened gripping structure is provided at the end to prevent the entire guide tube from falling into the cavity of the duodenoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model in a straight state;

[0019] Figure 2 It is a schematic diagram of the top view of the structure of the hard conduit in the utility model in a bent state;

[0020] Figure 3It is a schematic diagram of the partial structure of the hard catheter in the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Rigid catheter; 2. Tube body; 3. Head end; 4. Terminal end; 5. Blunt short tube; 6. Thickened holding connecting tube; 7. Thickened sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] See also Figure 1-3 A rigid internal guide device under ERCP includes a rigid catheter 1, which is composed of a tube body 2, a head end 3 and a tail end 4. The head end 3 is arranged at the front end of the rigid catheter 1, and the tail end 4 is arranged at the rear end of the rigid catheter 1. The head end 3 is fixedly connected with a blunt short tube 5, and the interior of the blunt short tube 5 is connected with the interior of the rigid catheter 1. The tail end 4 is fixedly connected with a thickened holding connecting tube 6, and the interior of the thickened holding connecting tube 6 is connected with the interior of the rigid catheter 1. The outer end of the thickened holding connecting tube 6 is sleeved with a thickened ring 7.

[0026] During use of this solution, in order to avoid the situation where the hand force cannot be transmitted to the tip of the instrument due to twisted nipple, the duodenoscope and the nipple cannot be close, the bile duct is obviously dilated, the bile duct angle is too acute, etc., the instrument will bend between the mirror and the duodenal nipple or in the bile duct and cannot transmit force, a hard catheter 1 composed of a tube body 2, a head end 3 and a terminal end 4 is used to provide a reaction force of the side wall between the duodenoscope and the nipple or in the dilated bile duct, and transmit the force to the head end of the instrument, thereby providing support for the side wall of the instrument, allowing the force to be transmitted to the head, reducing the difficulty of ERCP operation, and improving the success rate of some complex ERCP. The entire hard inner guide device is made of 04 stainless steel, similar to a threaded structure, which can be bent by itself, with an inner diameter of 2.8mm, an outer diameter of 3.6mm, and a length of 1.8m. The head end 3 is provided with a blunt short tube 5 to prevent scratching the intestine and bile duct, and the terminal end 4 is provided with a thickened holding structure to prevent the entire guide tube from falling into the lumen of the duodenoscope.

[0027] See also Figure 1-3 The hard catheter 1, the blunt short tube 5 and the thickened holding connecting tube 6 are all made of 04 stainless steel.

[0028] During use, the present invention uses a hard catheter 1, a blunt short tube 5 and a thickened holding connecting tube 6 made of 04 stainless steel material, which have good plasticity and toughness, good wear resistance and are convenient for use in medical treatment.

[0029] See also Figure 1-3 The inner diameter of the hard catheter 1 is 2.8 mm, the outer diameter of the hard catheter 1 is 3.6 mm, and the length of the hard catheter 1 is 1.8 m.

[0030] During use of this solution, the inner diameter of the rigid catheter 1 is expected to be able to pass through an 8.5f dilatation catheter, so the inner diameter is 2.8mm. The outer diameter of the rigid catheter 1 needs to pass through a duodenoscope, so the outer diameter can be 3.6mm. In actual use, the lower limit of the inner diameter of the rigid catheter 1 is 2.8mm. During the design process, the inner diameter can be designed to be 2.8mm or above. At the same time, the upper limit peak of the outer diameter of the rigid catheter 1 is 3.6mm. During the design process, the outer diameter can be designed to be 3.6mm or less. The length of the duodenoscope is 1.5m, so the overall length of the rigid catheter 1 is 1.8m.

[0031] See also Figure 1-3 The invention discloses a short blunt tube (5) as a rigid inner guide device for ERCP. The tube mirror thereof is a ring-shaped stainless tube. The outer diameter of the front end of the short blunt tube (5) is smaller than the outer diameter of the rigid catheter (1).

[0032] During use of the present invention, a blunt short tube 5 is provided at the head end 3 of the hard catheter 1 to make it blunt, thereby preventing the intestinal tract and the bile duct from being scratched.

[0033] See also Figure 1-3 The outer diameters of the thickened holding connecting tube 6 and the thickened collar 7 are both larger than the outer diameter of the hard catheter 1 .

[0034] During use, the present solution can prevent the entire guide tube from falling into the lumen of the duodenoscope by providing a thickened holding connection tube 6 and a thickened collar 7, both of which have outer diameters greater than the outer diameter of the hard catheter 1.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rigid inner guide device for ERCP, comprising a rigid catheter (1), characterized in that: The hard catheter (1) is composed of a tube body (2), a head end (3) and a tail end (4); the head end (3) is arranged at the front end of the hard catheter (1), and the tail end (4) is arranged at the rear end of the hard catheter (1); the head end (3) is fixedly connected to a blunt short tube (5), and the interior of the blunt short tube (5) is connected to the interior of the hard catheter (1); the tail end (4) is fixedly connected to a thickened holding connecting tube (6), and the interior of the thickened holding connecting tube (6) is connected to the interior of the hard catheter (1); and the outer end of the thickened holding connecting tube (6) is sleeved with a thickened collar (7).

2. The rigid inner guide device for ERCP according to claim 1, characterized in that: The hard catheter (1), the blunt short tube (5) and the thickened holding connecting tube (6) are all made of 04 stainless steel.

3. The rigid inner guide device for ERCP according to claim 1, characterized in that: The inner diameter of the hard catheter (1) is 2.8 mm, the outer diameter of the hard catheter (1) is 3.6 mm, and the length of the hard catheter (1) is 1.8 m.

4. The rigid inner guide device for ERCP according to claim 1, characterized in that: The blunt short tube (5) is a hard inner guiding device under ERCP, wherein the tube mirror is an annular stainless tube, and the outer diameter of the front end of the blunt short tube (5) is smaller than the outer diameter of the hard catheter (1).

5. The rigid inner guide device for ERCP according to claim 1, characterized in that: The outer diameters of the thickened holding connecting tube (6) and the thickened sleeve ring (7) are both larger than the outer diameter of the hard catheter (1).

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