Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Natural silk sericin-free silk fibroin core and application thereof

A technology of natural silk and silk fibroin, applied in medical science, prosthesis, surgery, etc., can solve the problems of spermatic cord compression, effusion, foreign body sensation, etc., and achieve the effect of wide application range and good mechanical strength

Inactive Publication Date: 2012-01-25
邱轶伟
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the artificial mesh patch currently used in hernia repair surgery is made of polypropylene and expanded polytetrafluoroethylene. This raw material has good strength, firm repair, no recurrence, no toxicity and foreign body reaction, but The obvious disadvantages are: the hernia repair mesh patch made of this material is not flexible and relatively hard. Since the operation needs to be fixed around the spermatic cord of male patients and the repair site is close to the subcutaneous area, the spermatic cord is often compressed and the blood The circulation is not smooth, so that it leads to ischemic orchitis, testicular atrophy and ejaculation disorder syndrome, etc.; and the patient can touch the patch from the skin surface, and there will be foreign body sensation and discomfort; in addition, because the material is not absorbable, this Discomfort will accompany the patient for life
However, the common problems of artificial blood vessels and vascular stents are thrombus formation and restenosis at the dilated site, and artificial blood vessels and stents do not have the innermost endothelial structure of normal human blood vessels, which is the main cause of thrombosis and restenosis infarction; currently The main materials of the artificial blood vessels used are nylon, polyester, and polytetrafluoroethylene, and the materials of the stents are titanium, titanium alloy, and stainless steel. These materials cannot adhere to human endothelial cells to form an endothelial protective layer.
[0004] After checking, due to the serious inflammatory reaction of natural silk, although it has been used clinically as wound suture, it is not widely used because it is easy to cause redness, swelling, pain, heat, oozing, and fluid accumulation at the suture site. use, and there is no record of using it as a raw material for the preparation of medical equipment

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weaving natural silk single or double raw silk into a rectangular mesh patch, the size specifications are 6×7.5cm, 6×13.8cm, 15×15cm, 25×35cm, and the mesh diameter is 2-4mm. Take 0.01 g of sodium carbonate and 0.3 g of sodium lauryl sulfate, dissolve them in 100 ml of deionized water, and make a degumming alkali solution; put the mesh patch in the degumming alkali solution, shake and degumming at 80°C for 10 Minutes, then discard the alkali solution and add an equal amount of citric acid with a concentration of 1% by weight to neutralize, then shake and wash with deionized water 5 times, each time for 30 minutes.

[0022] Getting pH is 200ml of 0.1M phosphate buffer solution of 8, adding 1 gram of pronase is mixed with 0.1M containing pronase phosphate buffer solution of 8, the silk patch after cleaning is immersed in this solution, Shake at 60°C for 120 minutes for further enzyme degumming; after the enzyme degumming is completed, heat the solution to 85°C and keep it...

Embodiment 2

[0025] To weave natural silk raw silk into surgical medical equipment, take 1 gram of sodium carbonate and 0.03 gram of sodium lauryl sulfate, dissolve them in 100 ml of deionized water to make a degumming alkali solution; put the medical equipment into the degumming alkali solution, Shake degumming at ℃ for 10 minutes, then discard the alkali solution and add an equal amount of citric acid with a concentration of 1% by weight to neutralize, and then shake and wash with deionized water 5 times, 50 minutes each time.

[0026] Take 300ml of a 0.1M phosphate buffer solution with a pH of 8, add 1 gram of pronase to prepare a 0.1M phosphate buffer solution containing a pronase with a pH of 8, immerse the cleaned medical equipment in the solution, and heat at 80°C Shake for 90 minutes to carry out further enzyme degumming; after the enzyme degumming is completed, the solution is heated to 65° C. for 50 minutes to inactivate the enzyme activity. Take out the medical equipment, wash i...

Embodiment 3

[0028] Take 200 ml of a 0.1M phosphate buffered saline solution with a pH of 8, and add 1 gram of pronase to prepare a 0.1M phosphate buffered saline solution containing a pronase with a pH of 8.

[0029] Weave natural silk raw silk into blood vessels; take 1 gram of sodium carbonate and 3 grams of sodium lauryl sulfate, dissolve them in 100 ml of deionized water to make a degumming alkali solution; put artificial blood vessels in the degumming alkali solution at 70 ° C Shake and degumming under the conditions for 50 minutes, then discard the alkali solution and add an equal amount of citric acid with a concentration of 1% by weight to neutralize, then shake and wash in deionized water for 5 times, each time for 40 minutes; after that, immerse the artificial blood vessel in 0.1M In the phosphate buffer solution containing pronase, shake at 40°C for 50 minutes to carry out enzyme degumming; after the enzyme degumming is completed, heat the solution to 55°C for 10 minutes to inac...

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

No PUM Login to View More

Abstract

The invention discloses novel application of a natural silk sericin-free silk fibroin core to preparation of a medical surgical instrument for human bodies. The natural silk sericin-free silk fibroin core has high mechanical property, high flexibility and an appropriate degradation speed. As proved by an in-vivo experiment on an animal, the natural silk sericin-free silk fibroin core is immune to exclusive reactions and toxic reaction, and is a good material for preparing various in-vivo medical instruments.

Description

technical field [0001] The invention relates to the use of a natural silk non-sericin protein fibroin core in preparing medical equipment such as surgical patches, supports or implants in the human body. Background technique [0002] At present, clinically, in terms of surgical patches or supports in the human body, such as: hernia repair patches or external fixation patches for tendon injury repair, there is no such material that requires high strength and good flexibility. A very good raw material. For example, the artificial mesh patch currently used in hernia repair surgery is made of polypropylene and expanded polytetrafluoroethylene. This raw material has good strength, firm repair, no recurrence, no toxicity and foreign body reaction, but The obvious disadvantages are: the hernia repair mesh patch made of this material is not flexible and relatively hard. Since the operation needs to be fixed around the spermatic cord of male patients and the repair site is close to ...

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): A61L27/22A61L31/04
Inventor 邱轶伟
Owner 邱轶伟
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com