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Medical catheter and medical device

A technology of medical catheters and outer tubes, applied in catheters, other medical devices, applications, etc., can solve problems such as head displacement, insufficient lighting, and prolong operation time, reduce sampling times, overcome insufficient lighting, and expand the scope of use Effect

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

[0005] The instrument channel of the sub-mirror is too small: at present, the inner diameter of the instrument channel inside the sub-mirror is only 1.2mm, which can only be adapted to special biopsy forceps. Due to the weak bite force and small sampling volume of the biopsy forceps, a lesion biopsy often needs to be performed Sampling from several times to more than ten times not only affects the diagnostic accuracy, but also seriously prolongs the operation time
[0006] Insufficient stability: the distal end of the mother mirror is suspended near the nipple. Since the axial direction of the common bile duct forms an acute angle with the intersection of the descending part of the duodenum, the sub-mirror must be reversed in a J-shape to reach the descending part of the duodenum. Quasi-duodenal papilla, but 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 will also occur. Displacement, 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
[0007] 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] The working process of the inner control and bending mechanism described in the first embodiment is as follows:

[0151] 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 closed relative to each other and hold the upper wheel 127 and the lower wheel 119 respectively, so as to realize the self-locking of the medical catheter 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 .

[0152] 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 .

[0153] Please refer to Figure 15 an...

Embodiment 2

[0156] The working process of the inner tube-controlled bending locking mechanism described in the second embodiment is as follows:

[0157] Please refer to Figure 15 and Figure 16 , the rotation locking knob 109 drives the rotation limit block 140 to rotate, and the rotation limit block 140 rotates along the surface 1411, so that the fixed limit block 141 is subjected to the pressing force in the axial direction to realize the axial movement. The back of the block 141 is provided with a first locking washer 1421, the first locking washer 1421 is squeezed and presses the lower wheel 108 in the axial direction, and the lower wheel knob 108 is moved by the pressing force, During the moving process, 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 disc 119 is held tightly so that it cannot rotate. At the same time, after the lower roulette knob 108 is squeezed, th...

Embodiment 3

[0172] The specific structure of the inner tube locking mechanism 101 described in the third embodiment is as follows:

[0173] 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.

[0174] Please refer to Figure 22 , 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 semicircular shapes for matching the outer diameter of the medical catheter 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-menti...

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Abstract

The invention relates to a medical catheter and a medical device, the medical catheter comprises a first main body section, a first bending section and a first head section, the first main body section is provided with a first passage, at least one second passage and at least one third passage, the first passage is used for allowing a medical device to penetrate in and out, the second passage is used for circulating a medium or introducing a circuit, and the third passage is used for allowing the medical device to penetrate in and out. The third passage is used for configuring a pull wire. The medical device comprises the medical catheter, an outer tube and a handle, the outer tube and the handle are used in cooperation with the medical catheter, under the condition that the outer diameter of the first body section is not changed, the inner diameter of the first channel is enlarged, the sectional area of the first channel is increased by one time, biopsy forceps with the outer diameter being 1.5 mm can be used in the first channel, and the biopsy forceps can be used in the second channel. Therefore, the bite force of the biopsy forceps is increased, the sampling amount is greatly increased, the sampling frequency is reduced, and the application range of the biopsy forceps is expanded.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular to a medical catheter and a medical device. Background technique [0002] 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 lens, 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 access path mainly refers to the technique of transoral choledochoscopy. [0003] Cholangio-motheroscope is the most classic...

Claims

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Application Information

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