JP2016225267A - Medical cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical cable whose thickness in sheath may be reduced and which may suppress deterioration in sheath due to worsening in handling in medical field and upon disinfection.SOLUTION: There is provided a medical cable 100 which is formed with styrene thermoplastic elastomer and comprises sheath 101 having thickness less than 10% relatively to cable outer diameter.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a medical cable suitable for medical use such as medical treatment and surgical treatment.

  In medical cables used in medical applications such as internal medicine (for example, ultrasonic diagnosis and endoscopy) and surgical practice (for example, endoscopic surgery), handling in medical settings (for example, There is a need to reduce the diameter for the purpose of improving the ease of bending.

  Examples of a method for reducing the diameter of a medical cable include a method for reducing the diameter of a conductor and a method for reducing the thickness of an insulator. When these methods are adopted, it is necessary to redesign the medical cable, and the time and cost involved in redesigning the medical cable are sacrificed.

  In contrast to these methods, the method of reducing the thickness of the outer cover (eg, sheath or outer cover), which is a part that does not easily affect the electrical characteristics of the medical cable, changes the basic structure of the existing medical cable. Therefore, it is possible to reduce the diameter of the medical cable without spending time and cost related to the redesign of the medical cable.

  However, when adopting the method of reducing the thickness of the outer sheath as a method of reducing the diameter of the medical cable, compared with the case before reducing the thickness of the outer sheath, However, it is difficult to restore the shape of the jacket, and there is a possibility that the bending life of the medical cable is deteriorated.

  Therefore, by forming the jacket with a highly elastic material such as polyurethane resin or silicone resin, it is possible to make it difficult for the casing to lean against the jacket when the medical cable is bent, and to easily restore the shape of the jacket. It is conceivable to suppress the deterioration of the bending life.

JP-A-5-205537

  However, since polyurethane resin and silicone resin are sticky on the surface, when the outer cover is made of polyurethane resin or silicone resin, the outer casing is caught more easily when handling the medical cable, which makes the medical cable easier to handle. The problem of worsening occurs.

  In medical practice, it is necessary to disinfect medical cables frequently in order to prevent the spread of infectious diseases caused by repeated use of medical cables. When forming a jacket, the jacket may be deteriorated when the medical cable is disinfected.

  Furthermore, in order to improve the handleability of the medical cable to the limit, it is desirable to reduce the diameter of the medical cable as much as possible, but the silicone resin is a material that is difficult to mold thinly.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a medical cable that can reduce the thickness of the jacket and that can suppress deterioration of handling at a medical site and deterioration of the jacket at the time of disinfection. .

  The present invention created to achieve this object is a medical cable provided with a jacket formed of a styrenic thermoplastic elastomer.

  According to the present invention, it is possible to provide a medical cable that can reduce the thickness of the jacket and that can suppress deterioration of handling at a medical site and deterioration of the jacket at the time of disinfection.

It is a cross-sectional schematic diagram which shows the medical cable which concerns on this invention. It is a cross-sectional schematic diagram which shows the other medical cable which concerns on this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, a medical cable 100 according to a preferred embodiment of the present invention is formed of a styrenic thermoplastic elastomer and has a thickness of less than 10% with respect to the cable outer diameter. 101.

  The medical cable 100 is, for example, an insulated wire, and includes a conductor 102 disposed at the center of a cross section and an insulator 103 formed around the conductor 102.

  The conductor 102 is made of, for example, a single wire or a stranded wire that is formed of a highly conductive material such as copper or copper alloy and has a silver plating or a tin plating on the surface thereof. Fluorine resin such as ethylene-perfluoroalkyl vinyl ether copolymer resin (PFA), tetrafluoroethylene-hexafluoropropylene copolymer resin (FEP), or ethylene-tetrafluoroethylene copolymer resin (ETFE), or polyethylene terephthalate It is made of resin (PET).

  Since the styrenic thermoplastic elastomer (for example, Lavalon (registered trademark)) is a highly elastic material, even if the thickness of the jacket 101 is less than 10% of the diameter of the medical cable 100, the medical cable It is difficult for wrinkles to be generated in the outer cover 101 at the time of bending 100, and the shape of the outer cover 101 is easily restored. As a result, it is possible to suppress the deterioration of the bending life of the medical cable 100.

  In addition, since the styrene-based thermoplastic elastomer has no stickiness on the surface, it is possible to suppress deterioration in handling at a medical site by forming the outer cover 101 with the styrene-based thermoplastic elastomer.

  Furthermore, since the styrene thermoplastic elastomer is difficult to hydrolyze, it is possible to suppress deterioration of the jacket during disinfection by forming the jacket 101 with the styrene thermoplastic elastomer.

  In addition, since the styrene-based thermoplastic elastomer can be easily formed into a thin wall, the outer cover 101 is thinned to a thickness of less than 10% with respect to the outer diameter of the cable by forming the outer cover 101 with a styrene-based thermoplastic elastomer. be able to.

  Furthermore, since the styrene thermoplastic elastomer is a biocompatible material and is not easily deteriorated even when autoclaved as in the case of the silicone resin, it is suitable for medical use by forming the outer cover 101 with the styrene thermoplastic elastomer. The medical cable 100 can be provided.

  As shown in FIG. 2, another medical cable 200 according to a preferred embodiment of the present invention is, for example, an ultrasonic diagnostic probe cable or an endoscope cable, and includes a plurality of cables 201 and a plurality of cables. A braided shield 203 formed by braiding a braided wire 202 in a cylindrical shape around the cable 201, and a jacket 204 formed so as to cover the braided shield 203.

  As the cable 201, for example, in addition to cables represented by an electric signal transmission cable such as a foamed coaxial cable and an optical signal transmission cable, a medical device represented by a suction tube, an air feeding tube, a water feeding tube, or a forceps Examples include instruments.

  The jacket 204 is made of a styrene thermoplastic elastomer and has a thickness of less than 10% with respect to the cable outer diameter.

  Since the styrenic thermoplastic elastomer (for example, Lavalon (registered trademark)) is a highly elastic material, even if the thickness of the jacket 204 is less than 10% of the diameter of the medical cable 200, the medical cable It is difficult for wrinkles to be generated on the outer cover 204 when the body 200 is bent, and the shape of the outer cover 204 is easily restored. As a result, it is possible to suppress the deterioration of the bending life of the medical cable 200.

  In addition, since the styrene-based thermoplastic elastomer has no stickiness on the surface, it is possible to suppress deterioration in handling at a medical site by forming the outer cover 204 with the styrene-based thermoplastic elastomer.

  Furthermore, since the styrene thermoplastic elastomer is difficult to hydrolyze, it is possible to suppress deterioration of the jacket during disinfection by forming the jacket 204 with the styrene thermoplastic elastomer.

  In addition, since the styrene thermoplastic elastomer can be easily formed into a thin wall, the outer sheath 204 is formed to a thickness of less than 10% with respect to the outer diameter of the cable by forming the outer sheath 204 with a styrene thermoplastic elastomer. be able to.

  As described above, according to the present invention, it is possible to suppress deterioration of handling at medical sites and deterioration of outer coating at the time of disinfection while reducing the thickness of the outer coating to a thickness of less than 10% with respect to the cable outer diameter. Possible medical cables can be provided.

DESCRIPTION OF SYMBOLS 100 Medical cable 101 Outer sheath 102 Conductor 103 Insulator 200 Medical cable 201 Cable 202 Braided strand 203 Braided shield 204 Outer sheath

Claims (2)

  A medical cable having a jacket provided on an outer periphery of an electric conductor or cable, wherein the jacket is formed of a styrene-based thermoplastic elastomer.   A medical cable, wherein the jacket has a thickness of less than 10% with respect to the outer diameter of the cable.