Sleeve of drainage tube

A drainage tube and cannula technology, applied in the field of medical devices, can solve problems such as easy introduction of bacteria, wound infection and suppuration, unresolved blockage, etc., to achieve the effect of preventing blockage, good barrier effect, and maintaining smooth flow

Active Publication Date: 2013-07-24
CHANGCHUN SINOBIOMATERIALS
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This drainage tube can prevent the blockage caused by the coagulation of fibrous material and form a thrombus, but it still does not solve the blockage caused by the tissue in the body such as being forced into the drainage tube
[0007] The Chinese patent with publication number CN202459752U discloses an anti-clogging drainage tube. The bottom of the drainage tube body is distributed with through holes, and a core tube is arranged in t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sleeve of drainage tube
  • Sleeve of drainage tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The polyglycolide copolymer (PLGA, with a molecular weight of 70,000) with a molar ratio of glycolide / lactide of 20 / 30 was injection molded by an injection molding machine, wherein the temperature of the injection molding machine was set at 150°C, and the injection pressure was 80MPa, clamping force 100T, injection speed 2s, cooling time 30s, pressure holding time 10s, one-time injection molding, to obtain a biodegradable outer tube with a thick middle and flat sides, the thickness of the tube wall is 0.8mm, usually The diameter of the hole is 2mm, and the drainage tube is placed in the biodegradable outer tube to obtain the drainage tube casing.

Embodiment 2

[0037] Racemic polylactic acid with a molecular weight of 80,000 is used as the base material for injection molding through an injection molding machine. The temperature of the injection molding machine is set at 160°C, the injection pressure is 80MPa, the clamping force is 100T, the injection speed is 1s, and the cooling time is 30s, the pressure holding time is 10s, one-time injection molding, the biodegradable outer tube with thick middle and flat sides is obtained, the thickness of the tube wall is 0.8mm, the diameter of the through hole is 2mm, and the drainage tube is placed in the biodegradable outer tube , the drainage tube cannula can be obtained.

Embodiment 3

[0039] The glycolide / lactide / polyethylene glycol copolymer with a molar ratio of mPEG / PLGA of 80 / 20 and a molecular weight of 60,000 was used as a base material for injection molding by an injection molding machine, and the temperature of the injection molding machine was set at 100 ° C. The injection pressure is 80MPa, the clamping force is 100T, the injection speed is 1s, the cooling time is 30s, and the holding time is 10s. One-time injection molding, the biodegradable outer tube with thick middle and flat sides is obtained, and the thickness of the tube wall is 0.8mm. , the diameter of the through hole is 2 mm, and the drainage tube is placed in the biodegradable outer tube to obtain the drainage tube casing.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Tube wall thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a sleeve of a drainage tube. The sleeve of the drainage tube comprises the drainage tube and a biodegradable outer tube which is sleeved outside the drainage tube. A drainage relief area is formed between the drainage tube and the biodegradable outer tube. Through holes are formed in the wall of the biodegradable outer tube and are communicated with the drainage tube through the drainage relief area, and the diameter of the through holes is smaller than the drainage bore diameter of the drainage tube. Compared with a sleeve-type drainage tube, the sleeve of the drainage tube has the advantages that in the process of negative pressure drainage, liquid enters a support firstly, passes through the relief area and then enters the drainage tube, the diameter of the through holes in the drainage relief area is smaller than the drainage bore diameter of the drainage tube, a good blocking function can be played, blocking generated due to the fact that human tissue is forced to be sucked into the drainage tube is avoided, and accordingly smoothness of the negative pressure drainage can be kept.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, in particular to a drainage tube casing. Background technique [0002] Vacuum sealing drainage (VSD for short) refers to placing a drainage tube on the affected area, covering or filling the wound with skin and soft tissue defects with a foam dressing, and then sealing it with a biological semipermeable membrane, making it a A confined space, and finally connect the drainage tube to the negative pressure source, a brand new treatment method to promote wound healing through controllable negative pressure. [0003] Negative pressure sealing drainage technology is a new wound treatment technology in recent years. It has the advantages of efficient drainage and decompression, promoting wound healing and reducing the number of dressing changes. It has been widely used in the treatment of various acute and chronic wounds, and has achieved Significant curative effect. One of the core techno...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61M27/00A61M25/14
Inventor 崔毅赵钧浩高战团丛占福侯剑锋王浩庄秀丽
Owner CHANGCHUN SINOBIOMATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap