Medical catheter and medical device comprising same

A technology for medical catheters and medical devices, which is applied in the field of medical catheters and medical devices containing the catheters, which can solve the problems of insufficient lighting, difficulties, and high cost of use, and achieve the effects of expanding the scope of use, reducing the difficulty of operation, and reducing the number of sampling times

Pending Publication Date: 2022-05-27
MICROPORT UROCARE JIAXING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] (1) Insufficient stability: the distal end of the mother mirror is suspended near the nipple. Since the axial direction of the common bile duct and the descending part of the duodenum meet at an acute angle, the mirror mirror must be reversed in a J-shape when it reaches the descending part of the duodenum. The duodenal papilla can only be aligned with the duodenal papilla, and the distal end of the mother mirror does not have support. Due to the influence of intestinal peristalsis, the distal position of the mother mirror is easy to move, and the head end of the mirror body inside the instrument channel of the mother mirror Displacement will also occur, and the sub-mirror will not continue to advance towards the common bile duct because it does not have support, which will affect the operation
[0016] (2) Insufficient lighting, the sub-lens end has limited space for light source arrangement, and the light source close to the sub-mirror cannot illuminate the stomach in a larger space, making it difficult to use the sub-mirror independently to enter the stomach to find the pylorus
[0017] (3) Difficulty in operation: the handle of operating the sub-mirror and the handle of the mother mirror need to be closely coordinated by two senior doctors, so as to realize the adjustment of the distance between the two sets of handles, so the operation is extremely difficult and complicated
But the complex structure of above-mentioned forceps lifter is difficult to sterilize
In order to solve the above problems, a disposable master mirror has also been designed, but the use cost of this kind of disposable master mirror is relatively high

Method used

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  • Medical catheter and medical device comprising same
  • Medical catheter and medical device comprising same
  • Medical catheter and medical device comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0188] The working process of the inner control and bending mechanism described in the first embodiment is as follows:

[0189] Rotating the locking handle 145, the locking handle 145 rotates and drives the pressing rod 144 to rotate and moves downward in a small range through the thread. The distal ends of the adjacent locking pieces 147 are relatively closed and respectively hold the upper disc 127 and the lower disc 119, so as to realize the self-locking of the inner tube 2 in any direction. In the non-self-locking state, the distal ends of the adjacent locking pieces 147 can be relatively opened by the spring 148 and contact the self-locking of the upper wheel disc 127 and the lower wheel disc 119 .

[0190] The specific structure of the second embodiment of the inner control bending self-locking mechanism is described below. The inner control bending self-locking mechanism is provided outside the handle body 1 .

[0191] Please refer to Figure 16 and Figure 17 In the...

Embodiment 2

[0194] The working process of the inner tube-controlled bending locking mechanism described in the second embodiment is as follows:

[0195] Please refer to Figure 16 and Figure 17 , the rotation locking knob 109 drives the rotation limit block 140 to rotate, and the rotation limit block 140 rotates along the first surface 1411 so that the fixed limit block 141 is subjected to an axial extrusion force to achieve axial movement. A first locking washer 1421 is provided on the back of the fixed stop block 141. The first locking washer 1421 is squeezed and axially presses the lower wheel 108, and the lower wheel knob 108 is squeezed During the movement, the first locking washer 1421 is compressed and deformed. After the first locking washer 1421 is deformed, the damping is increased and the shaft end of the lower wheel disc 119 is held tightly so that it cannot rotate. . At the same time, after the lower roulette knob 108 is squeezed, the shaft end of the lower roulette wheel...

Embodiment 3

[0210] The specific structure of the inner tube locking mechanism 101 described in the third embodiment is as follows:

[0211] The inner tube locking mechanism 101 includes a second fixing part and a second rotating part hinged with the second fixing part, and the second fixing part and the other end of the second rotating part that are not connected through a tight Fixed device connection.

[0212] Please refer to Figure 23 , Specifically, the second fixed part adopts a fixed end 10112, and the second rotating part adopts a clamping end 10110. The fixed end 10112 and the clamping end 10110 are respectively provided with semicircles for matching the outer diameter of the inner tube 2. In the clamping port 10114, one end of the fixed end 10112 and one end of the clamping end 10110 are hinged through a hinge 10111, and the other end of the fixing end 10112 and the other end of the clamping end 10110 are respectively provided with threaded holes. The above-mentioned fastening...

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PUM

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Abstract

The present invention relates to a medical catheter and a medical device comprising the same, the medical catheter comprising an outer tube main body section, an outer tube curved section, and an outer tube head section, the medical catheter further comprising a support part and a passage, the support part being filled with a medium through the passage into a storage cavity, so that the support part is expanded or the medium is extracted from the storage cavity through the passage, and the supporting part is contracted. The medical device comprises the medical catheter, an inner tube and a handle, the inner tube and the handle are used in cooperation with the medical catheter, and the far end of the inner tube enters the handle from the channel of the handle, penetrates into the medical catheter and extends out of the far end of the medical catheter. The stability of the medical device is enhanced by arranging the supporting part, the storage cavity in the supporting part is filled with a medium through the passage, the supporting part is expanded and drives the whole medical catheter to move and be tightly attached to the intestinal wall, the intestinal space is expanded through the supporting part, the distance from the inner tube to the nipple is increased, and the medical device is more stable. And space and stability are provided for operation of the inner pipe.

Description

technical field [0001] The present invention relates to the technical field of medical devices, and in particular, to a medical catheter and a medical device including the catheter. Background technique [0002] 【Introduction to the technique of peroral choledochoscopy】 [0003] Cholangioscopy and choledochoscopy are widely used in clinical practice, and have become one of the most important diagnostic tools and treatment methods for intrahepatic and extrahepatic biliary tract diseases and special circumstances. They have also become the most important minimally invasive techniques for biliary surgery and liver surgery one. In general, choledochoscopy techniques can be divided into two categories according to the path of the mirror, the artificial channel and the natural orifice. The former type of the artificial channel can include T-tube sinus, percutaneous transhepatic and intraoperative choledochoscopy, etc. The latter type of natural orifice entry path mainly refers t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61B1/00A61B1/005A61B1/015A61B1/018A61B1/045A61B1/273A61B1/06A61M25/00A61M25/01
CPCA61B17/3423A61B1/2736A61B1/00066A61B1/0052A61B1/0055A61B1/0057A61B1/015A61B1/018A61B1/045A61B1/0661A61M25/0026A61M25/0043A61M25/0045A61M25/0136A61B2017/00292A61B2017/00305A61B2017/00318A61B2017/3447A61B2017/345A61M25/0147A61M2210/1053A61M2025/0037A61M2205/587A61M2210/005A61B17/34A61B1/005A61M25/01A61M25/00A61B1/273A61B1/00A61B1/06
Inventor 王雄伟朱鑫建王幸敏
Owner MICROPORT UROCARE JIAXING CO LTD
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