Composite fiber, manufacturing method and orthopedic binding wire

Abstract

The invention relates to the technical field of medical apparatus and instruments, and specifically discloses a composite fiber including a polyamide 6 fiber core and a poly(methyl methacrylate-co-N-vinyl pyrrolidone) polymer cladded and compounded on the surface of the polyamide 6 fiber core. The invention also discloses a preparation method of the composite fiber and an orthopaedic strapping line prepared from the composite fiber. The composite fiber is a composite fiber material having the advantages of sufficient tensile strength, good elasticity, good toughness, good plasticity, and good biocompatibility. The surface cladding layer can increase the friction force of the fiber, has hydroscopicity, and can absorb tissue fluid. When the orthopaedic strapping line obtained from the composite fiber is used for strapping and fixing, elastic flexible fixation is formed, stress shielding cannot be produced, and the periosteal blood movement is not affected; the product is easily tied into a knot, cannot slip, can be implanted for a long term without taking out the strapping line, and is quite applicable in adjuvant therapy of orthopedics.

Description

Technical field

[0001] The invention relates to the technical field of medical devices, in particular to a composite fiber, a manufacturing method thereof and an orthopedic binding wire.

Background technique

[0002] The internal fixation of tubular bone fractures mainly adopts intramedullary nail, plate screw fixation, single screw fixation, tension band fixation, binding fixation and so on. Among them, binding fixation is mainly used in the auxiliary fixation treatment of long oblique fractures of tubular bones, comminuted fractures, and some avulsion fractures, and its parts are mostly in the clavicle, metacarpophalangeal, radius and ulna, fibula, femur, and tibia.

[0003] At present, the orthopedic binding and fixation products approved by the State Food and Drug Administration are mainly metal, such as stainless steel wire, titanium alloy embracing device, etc. Stainless steel wire is easy to operate and widely used, but due to its rigidity, it is easy to break wh...

Examples

preparation example Construction

[0022] 1. Preparation of composite fibers

[0023] The composite fiber of the invention is made by compounding polyamide 6 fiber and poly(methyl methacrylate-co-N-vinylpyrrolidone) polymer. Polyamide 6 fibers can be commercially available, with a number-average molecular weight of 15,000-30,000; poly(methyl methacrylate-co-N-vinylpyrrolidone) polymers can be obtained by polymerization, with a number-average molecular weight of 7-20 Ten thousand.

[0024] The preparation method comprises two steps of surface activation of the polyamide 6 fiber and coating and compounding. Surface activation can be performed using an acid solution, for example, surface-activated polyamide 6 fibers can be obtained by soaking polyamide 6 fibers in an acid solution. Afterwards, the surface-activated polyamide 6 fiber is immersed in the viscous liquid of poly(methyl methacrylate-co-N-vinylpyrrolidone) polymer, so that the latter is coated and composited on the surface of the polyamide 6 fiber . ...

specific Embodiment

[0031] In the examples, the characterization of the tensile strength and water absorption of the fibers is carried out by means commonly used in the field, so details are not repeated here.

[0032]

[0033]

Technical field

[0001] The invention relates to the technical field of medical devices, in particular to a composite fiber, a manufacturing method thereof and an orthopedic binding wire.

Background technique

[0002] The internal fixation of tubular bone fractures mainly adopts intramedullary nail, plate screw fixation, single screw fixation, tension band fixation, binding fixation and so on. Among them, binding fixation is mainly used in the auxiliary fixation treatment of long oblique fractures of tubular bones, comminuted fractures, and some avulsion fractures, and its parts are mostly in the clavicle, metacarpophalangeal, radius and ulna, fibula, femur, and tibia.

[0003] At present, the orthopedic binding and fixation products approved by the State Food and Drug Administration are mainly metal, such as stainless steel wire, titanium alloy embracing device, etc. Stainless steel wire is easy to operate and widely used, but due to its rigidity, it is easy to break wh...

Examples

preparation example Construction

[0022] 1. Preparation of composite fibers

[0023] The composite fiber of the invention is made by compounding polyamide 6 fiber and poly(methyl methacrylate-co-N-vinylpyrrolidone) polymer. Polyamide 6 fibers can be commercially available, with a number-average molecular weight of 15,000-30,000; poly(methyl methacrylate-co-N-vinylpyrrolidone) polymers can be obtained by polymerization, with a number-average molecular weight of 7-20 Ten thousand.

[0024] The preparation method comprises two steps of surface activation of the polyamide 6 fiber and coating and compounding. Surface activation can be performed using an acid solution, for example, surface-activated polyamide 6 fibers can be obtained by soaking polyamide 6 fibers in an acid solution. Afterwards, the surface-activated polyamide 6 fiber is immersed in the viscous liquid of poly(methyl methacrylate-co-N-vinylpyrrolidone) polymer, so that the latter is coated and composited on the surface of the polyamide 6 fiber . ...

specific Embodiment

[0031] In the examples, the characterization of the tensile strength and water absorption of the fibers is carried out by means commonly used in the field, so details are not repeated here.

[0032]

[0033]

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