Title:
MEDICAL SHAFT AND METHOD FOR PRODUCING MEDICAL SHAFT
Document Type and Number:
WIPO Patent Application WO/2024/090368
Kind Code:
A1
Abstract:
The present invention provides a medical shaft which has a novel structure and which makes it possible to fit, to a fixed position, a resin tube that covers a region of a shaft body from a small-diameter portion to a large-diameter portion, while suppressing the occurrence of problems caused by an increase in diameter. Provided is a medical shaft 10 wherein: a shaft body 12 is provided with a change part 37 in which the outer diameter dimension changes between a small-diameter portion 34 and a large-diameter portion 36; a region of the shaft body 12 which is from the small-diameter portion 34, through the change part 37, and to the large-diameter portion 36 is continuously covered in the lengthwise direction by a resin tube 14; the resin tube 14 has a structure in which a small-diameter side heat-shrink tube 48 that covers the small-diameter portion 34 and a large-diameter side heat-shrink tube 50 that covers the large-diameter portion 36 are joined; and a joining part 46, which has a larger thickness dimension than one of the small-diameter side heat-shrink tube 48 and the large-diameter side heat-shrink tube 50, is positioned further to the small-diameter portion 34 side at which the change part 37 is positioned than an end part of the large-diameter portion 36 of the shaft body 12.
Inventors:
GOTOH KEN (JP)
KAMEOKA KOJI (JP)
KAMEOKA KOJI (JP)
Application Number:
PCT/JP2023/038138
Publication Date:
May 02, 2024
Filing Date:
October 23, 2023
Export Citation:
Assignee:
NIPRO CORP (JP)
International Classes:
B29C63/42; A61B18/12; A61M25/00
Foreign References:
| JP2004041254A | 2004-02-12 | |||
| JP2019069186A | 2019-05-09 | |||
| JP2017184791A | 2017-10-12 | |||
| US4636272A | 1987-01-13 |
Attorney, Agent or Firm:
KASAI & NAKANE INTERNATIONAL PATENT FIRM et al. (JP)
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