Title:
CATHETER AND BALLOON CATHETER
Document Type and Number:
WIPO Patent Application WO/2018/055706
Kind Code:
A1
Abstract:
[Problem] To provide a catheter wherein, even if an outer layer is pulled in the axial direction (front end direction and rear end direction), the outer layer is unlikely to be separated from an inner layer; and a balloon catheter. [Solution] Provided is a catheter 1 wherein an outer layer 40 has a protrusion 50 provided at the location of a recess 24 in the inner layer 10, the protrusion 50 extending through a gap 25 to a deeper position than a reinforcement layer (coil body) 30 and also extending axially. As a result of this configuration, the joint strength between the inner layer 10 and the outer layer 40 is increased, and an anchor effect by which the protrusion 50 of the outer layer 40 engages with the reinforcement layer 30 (coil body) 30 reduces the possibility of separation of the outer layer 40 from the inner layer 10 occurring when the outer layer 40 is pulled axially (front end direction and rear end direction) at a narrowed section or a closed section during the insertion of the catheter 1 into a blood vessel, a bile duct, a pancreas duct, etc.
Inventors:
KUBO YUTA (JP)
OGIDO MORITAKA (JP)
KATSURADA TAKEHARU (JP)
OGIDO MORITAKA (JP)
KATSURADA TAKEHARU (JP)
Application Number:
PCT/JP2016/077894
Publication Date:
March 29, 2018
Filing Date:
September 21, 2016
Export Citation:
Assignee:
ASAHI INTECC CO LTD (JP)
International Classes:
A61M25/10; A61M25/00
Domestic Patent References:
| WO2015012185A1 | 2015-01-29 |
Foreign References:
| JP2015147080A | 2015-08-20 | |||
| JP2014236863A | 2014-12-18 | |||
| JP2013005823A | 2013-01-10 |
Other References:
See also references of EP 3517161A4
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