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Developable patch and preparation method thereof

A patch, polypropylene technology, applied in medical science, prosthesis, etc., can solve the problems of intolerance to infection and pollution, high price of expanded polytetrafluoroethylene, foreign bodies and severe inflammatory reactions, etc. Post-recurrence rate and risk, meeting clinical needs, and the effect of good physical performance

Inactive Publication Date: 2019-12-27
JIANGSU SONACARE MEDTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the three patch materials, the polyester patch has been basically abandoned due to the heavy foreign matter and inflammatory reaction. The expanded polytetrafluoroethylene is expensive and cannot tolerate infection and pollution.

Method used

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  • Developable patch and preparation method thereof
  • Developable patch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The development line made of modified PP as carrier and barium sulfate at a mixing ratio of 3:2 (that is, the ratio is 1.5) has a single filament diameter of 0.15mm, a breaking force of 300cN, and a breaking elongation of 20%. The shrinkage rate is 4%; the polypropylene monofilament used has a diameter of 0.15mm, a breaking force of 900cN, a breaking elongation of 30%, and a thermal shrinkage rate of 3%; a Raschel warp knitting machine is used for mixed knitting to prepare a developing complement The specific process is: machine number 12, drawing density 8 / cm, let-off amount 2000-4000, input the organization chart, select diamond shape, weave into diamond mesh patch, and the woven product can be developed after heat setting patches.

Embodiment 2

[0028] Using modified PLA as the carrier and barium sulfate at a mixing ratio of 6:1 (that is, the ratio is 6), the developing wire has a single filament diameter of 0.12mm, a breaking force of 400cN, and a breaking elongation of 20%. The shrinkage rate is 2%; the development thread is composited on the polypropylene monofilament flat film in an oval pattern by hand embroidery to obtain a developable patch.

Embodiment 3

[0030] Silver wire is used as the developable thread, and the developed thread is fitted on the polypropylene composite patch in a square pattern by machine embroidery to obtain a developable patch.

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Abstract

The present invention discloses a developable patch and a preparation method thereof. The developable patch is mainly prepared by compounding developable threads and polypropylene monofilaments or polypropylene patches in a weaving or embroidering manner; the developable threads are any one of composite nickel-titanium threads, platinum-iridium alloy threads, gold, tungsten threads, titanium threads, silver threads, medical stainless steel threads and polymer composite threads; and the preparation method of the developable patch comprises selection and processing of developable threads, processing of polypropylene monofilaments or patches and compounding of developable patches. The developable patch has good physical properties and biological safety, meets clinical needs, can effectively help doctors to conduct postoperative check of patients after herniorrhaphy, confirms whether the patch conducts contractures and shifts, and reduces postoperative recurrence rate and risk of the patients.

Description

technical field [0001] The invention relates to the technical field of biological tissue patches, in particular to a developable patch and a preparation method thereof. Background technique [0002] Hernia refers to a certain tissue or organ in the body leaving its normal anatomical position and forming through a congenital or acquired weak point, defect or gap. Hernias are more common, accounting for about 90% to 95% of abdominal external hernias. The traditional hernia repair is to suture and reinforce the soft tissue, and the postoperative recurrence rate of this method is as high as 10% to 15%. Tension-free hernia repair is the use of repair materials to repair weak parts. Laparoscopic hernia repair for the treatment of abdominal external hernia has been maturely used in clinical treatment of hernia surgery and achieved satisfactory results. Clinical statistical results show that tension-free repair has the characteristics of low postoperative recurrence rate, simple o...

Claims

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Application Information

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IPC IPC(8): A61F2/00
CPCA61F2/0063A61F2240/001
Inventor 马建民
Owner JIANGSU SONACARE MEDTECH
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