Threaded catheter with coating

A urinary catheter and coating technology, applied in the field of medical devices, to achieve the effects of inhibiting oxidative stress, promoting wound repair, and not requiring harsh storage conditions

Pending Publication Date: 2017-12-22
SHANGHAI FIRST PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Threaded catheter with coating
  • Threaded catheter with coating
  • Threaded catheter with coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1 thread segment+coating type urinary catheter

[0054] Please refer to figure 1 As shown, the three-chamber balloon catheter includes a catheter body 10, and the two ends of the catheter body 10 are head end 19 and tail end 11 respectively. The tail end 11 of the three-chamber balloon catheter is provided with three cavities, which are respectively a water injection chamber 12, a drug injection chamber 13, and a liquid discharge chamber 14, and the tail end 11 also has a one-way valve for controlling the water injection chamber 12. valve 15.

[0055] Please refer to figure 2 As shown, the head end 19 of the three-chamber balloon catheter is respectively provided with a drug injection hole 16 on one side and a liquid discharge hole 17 on one side.

[0056] Please refer to image 3 As shown, a balloon 18 is provided on the catheter body 10 close to the head end 19, and the balloon 18 expands after being filled with water through the water injection cavity...

Embodiment 2

[0060] Embodiment 2 threaded section with groove + coated catheter

[0061] This embodiment is basically the same as Embodiment 1, the difference is: please refer to Figure 5 and Figure 6 , the threaded section 20 is provided with a groove 22 along the length direction of the catheter body 10, when the coating 30 is coated on the threaded section 20, the groove 22 forms a channel for the coating 30 to diffuse up and down, While enlarging the coating area, it also prevents the urethra of some patients from closely fitting the threaded protrusion 21 on the catheter body 10, resulting in uneven distribution of the coating 30 and incomplete utilization. In this embodiment, the number of grooves 22 is four, and are arranged at equal intervals along the outer circumference of the threaded segment 20 .

Embodiment 3

[0062] Embodiment 3 threaded section+Se-SiO2 coating type urinary catheter with groove

[0063] This embodiment is basically the same as Embodiment 2, the difference is that: this embodiment uses Se-SiO2 coating 30 to effectively inhibit the oxidative stress of the prostate wound, and the Se-SiO2 coating 30 includes nano-Se-SiO2 Material, this nano-Se-SiO2 material is formed by porous SiO2 material wrapping Se particle, the porous structure of porous SiO2 material can effectively control the release rate and dose of Se, thereby avoiding poisoning phenomenon, but described nano-Se-SiO2 material is powdery , cannot be coated on the catheter tube body 10. Because chitosan can be degraded by lysozyme in organisms to generate natural metabolites, it is non-toxic and can be completely absorbed by organisms, so it has great advantages in using it as a drug sustained-release agent, and the shell The polysaccharide is in a liquid state and can be coated on the tube body 10 of the urin...

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Abstract

The invention discloses a threaded catheter with a coating. The threaded catheter comprises a catheter body, a balloon is arranged at the position of the catheter body close to the front end of the catheter body, threaded projections are arranged at the position of the outer surface of the catheter body close to the balloon to form a threaded section, grooves are formed in the threaded section along the length direction of the catheter body and the periphery of the threaded section at intervals, a Se-SiO2 coating is sprayed on the periphery of the threaded section of the catheter body, nano-Se-SiO2 materials and chitosan are mixed to form the Se-SiO2 coating, and porous SiO2 wraps Se particles to form the nano-Se-SiO2 materials. According to the threaded catheter with the coating, on one hand, the coating area of the coating is increased, on the other hand, oxidative stress of a prostate wound surface is restrained, the toxic dose caused by rapid releasing of the Se particles is avoided, and rapid rehabilitation of postoperative prostate is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a coated threaded urinary catheter. Background technique [0002] Urinary catheter is a routine nursing intervention for postoperative patients. It is inserted through the urethra into the bladder to drain urine under sterile conditions. It is widely used in patients with postoperative anesthesia and dysuria. [0003] At present, known medical catheters are made of materials such as natural rubber, silicon rubber or polyvinyl chloride (PVC), and can be inserted into the bladder through the urethra so as to drain urine. There is a water bag at the end, the water bag can expand after water injection, the fixed urinary catheter stays in the bladder and is not easy to come out, and the drainage tube is connected to the urine bag to collect urine. [0004] The patient cannot quickly recover normal urination function after prostatectomy, so the catheter needs to be inserte...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61L29/10A61L29/14A61L29/16
CPCA61L29/106A61L29/146A61L29/16A61M25/0009A61M25/0021A61M25/0045A61M25/0067A61M25/1002A61M25/1027A61L2300/412A61L2300/418A61L2300/10A61M2210/1089A61M2210/1085A61M2025/105A61M2205/0238A61M2210/005
Inventor 杨博宇夏术阶韩邦旻邓国英姜辰一阮渊
Owner SHANGHAI FIRST PEOPLES HOSPITAL
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