Composite thread and manufacture process thereof

Abstract

A composite thread including a core thread and at least one wrapping film is provided. The wrapping film wraps the core thread uniformly. The composite thread is mainly formed by the biodegradable material, and has improved biocompatibility which is suitable to be used in the surgery. A manufacture process thereof is also provided.

What is claimed is: 
     
         1 . A composite thread, comprising:
 a core thread; and   at least one wrapping film, wrapping a surface of the core thread.   
     
     
         2 . The composite thread as claimed in  claim 1 , wherein the composite thread is formed of a biodegradable polymer. 
     
     
         3 . The composite thread as claimed in  claim 2 , wherein the biodegradable polymer is selected from a group consisting of polyester, polysaccharide, polyaminoacid, the copolymers thereof, the blends thereof, and the mixtures thereof. 
     
     
         4 . The composite thread as claimed in  claim 2 , wherein the biodegradable polymer is selected from a group consisting of poly-glutamic acid, polylysine, polyorthoester, polycaprolactone, polylactide, polyglycolic acid, polysebacic polyanhydride, polydioxanone, chitin, fucoidan, the copolymers thereof, the blends thereof, and the mixtures thereof. 
     
     
         5 . The composite thread as claimed in  claim 1 , wherein at least one of the at least one wrapping film has a bioactive component. 
     
     
         6 . The composite thread as claimed in  claim 5 , wherein the bioactive component is selected from a group consisting of anti-inflammatory agents, analgesic agents, anesthetic agents, antihistamines, steroids, skin-lightening medicaments, diabetes medicaments, cell growth factors, natural moisture-retaining factors, nucleic acids, peptides, proteins, vitamins, antilipidemic medicaments, anti-cholesterol medicaments, growth hormones, hormones, antioxidizing medicaments, cell growth inhibitors, and differentiation inhibitors. 
     
     
         7 . The composite thread as claimed in  claim 5 , wherein the at least one wrapping film is a plurality of layers of wrapping films, and one of the wrapping film has a slowly biodegradable component. 
     
     
         8 . The composite thread as claimed in  claim 7 , wherein the slowly biodegradable component is selected from a group consisting of poly-glutamic acid, polylysine, polyorthoester, polycaprolactone, polylactide, polyglycolic acid, polysebacic polyanhydride, polydioxanone, chitin, fucoidan, the copolymers thereof, the blends thereof, and the mixtures thereof. 
     
     
         9 . A manufacturing process of a composite thread, comprising:
 providing a core thread formed of a plurality of line segments connected in series;   continuously immersing the core thread into a first wrapping film solution and removing the core thread from the first wrapping film solution, wherein each of the line segments of the core thread is removed from the first wrapping film solution after the next line segment is immersed into the first wrapping film solution;   obtaining the core thread wrapped by a first wrapping film by performing a first drying step;   continuously immersing the core thread wrapped by the first wrapping film into a second wrapping film solution and removing the core thread wrapped by the first wrapping film from the second wrapping film solution, wherein each of the line segments of the core thread is removed from the second wrapping film solution after the next line segment is immersed into the second wrapping film solution; and   obtaining a composite thread wrapped by a second wrapping film by performing a second drying step.   
     
     
         10 . The manufacturing process of the composite thread as claimed in claim  9 , wherein the method of continuously immersing the core thread into the first wrapping film solution and removing the core thread from the first wrapping film solution comprises:
 disposing a first rotation shaft in the first wrapping film solution, and continuously rolling the core thread into the first wrapping film solution by using the first rotation shaft; and   disposing a second rotation shaft outside the first wrapping film solution, and continuously removing the core thread from the first wrapping film solution by using the second rotation shaft.   
     
     
         11 . The manufacturing process of the composite thread as claimed in  claim 9 , wherein the method of continuously immersing the core thread wrapped by the first wrapping film into the second wrapping film solution and removing the core thread wrapped by the first wrapping film from the second wrapping film solution comprises:
 disposing a third rotation shaft in the second wrapping film solution, and continuously rolling the core thread wrapped by the first wrapping film into the second wrapping film solution by using the third rotation shaft; and   disposing a fourth rotation shaft outside the second wrapping film solution, and continuously removing the core thread from the second wrapping film solution by using the fourth rotation shaft.   
     
     
         12 . The manufacturing process of the composite thread as claimed in  claim 9 , wherein the first drying step or the second drying step comprises a heating step. 
     
     
         13 . A composite thread, manufactured by manufacturing steps as follows:
 providing a core thread formed of a plurality of line segments connected in series;   continuously immersing the core thread into a first wrapping film solution and removing the core thread from the first wrapping film solution, wherein each of the line segments of the core thread is removed from the first wrapping film solution after the next line segment is immersed into the first wrapping film solution;   obtaining the core thread wrapped by a first wrapping film by performing a first drying step;   continuously immersing the core thread wrapped by the first wrapping film into a second wrapping film solution and removing the core thread wrapped by the first wrapping film from the second wrapping film solution, wherein each of the line segments of the core thread is removed from the second wrapping film solution after the next line segment is immersed into the second wrapping film solution; and   obtaining a composite thread wrapped by a second wrapping film by performing a second drying step.