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公开(公告)号：US20230372591A1
公开(公告)日：2023-11-23
申请号：US18222174
申请日：2023-07-14
申请人： Junkosha Inc.
IPC分类号： A61L29/06
CPC分类号： A61L29/06
摘要： PROBLEM TO BE SOLVED: To provide a passing tube for medical device capable of excellently retaining lumen lubricating properties without impairing the operability of a medical device after the tube is repeatedly used, for example, in the endovascular treatment; and also to provide a catheter equipped with the tube. SOLUTION: The passing tube for medical device has a layered structure consisting of a lubricating layer 4 and a flexible layer 5 disposed around the lubricating layer 4. The passing tube for medical device is characterized by the lubricating layer 4 which is made of a fluorine-containing ethylenic polymer to improve the reversibility as well as the lubricating property when the medical device passes through the tube.
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公开(公告)号：US11998663B2
公开(公告)日：2024-06-04
申请号：US18222174
申请日：2023-07-14
申请人： Junkosha Inc.
CPC分类号： A61L29/06 , A61L29/041
摘要： The present invention provides a thin-walled PTFE tube with appropriate elongation, sufficient strength, and good uniformity during stretching and a medical tube with excellent flexibility and dimensional accuracy. The polytetrafluoroethylene tube according to the present invention is a polytetrafluoroethylene tube having a wall thickness of about 0.04 mm or less, wherein the wetting tension of either of or both outer and inner surfaces of the polytetrafluoroethylene tube is 46 mN/m or more, and in a stress-strain curve obtained by a tensile test performed under an atmosphere of 200° C., tensile stress at 20% strain σ20 (N/mm2) of the polytetrafluoroethylene tube and tensile stress at 50% strain σ50 (N/mm2) of the polytetrafluoroethylene tube satisfy 2.0≤0.1×σ20+0.3×σ50
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公开(公告)号：US20240285833A1
公开(公告)日：2024-08-29
申请号：US18657881
申请日：2024-05-08
申请人： Junkosha Inc.
CPC分类号： A61L29/06 , A61L29/041
摘要： The present invention provides a thin-walled PTFE tube with appropriate elongation, sufficient strength, and good uniformity during stretching and a medical tube with excellent flexibility and dimensional accuracy. The polytetrafluoroethylene tube according to the present invention is a polytetrafluoroethylene tube having a wall thickness of about 0.04 mm or less, wherein the wetting tension of either of or both outer and inner surfaces of the polytetrafluoroethylene tube is 46 mN/m or more, and in a stress-strain curve obtained by a tensile test performed under an atmosphere of 200° C., tensile stress at 20% strain σ20 (N/mm2) of the polytetrafluoroethylene tube and tensile stress at 50% strain σ50 (N/mm2) of the polytetrafluoroethylene tube satisfy 2.0≤0.1×σ20+0.3×σ50
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