Catheter shaft and method of making a catheter shaft
US6589226B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/1036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of making a catheter having a catheter shaft, the method including axially deflecting at least a section of the catheter shaft. The shaft section is axially deflected in a first radial direction on the shaft circumference one or more times. In a presently preferred embodiment, the method further includes axially deflecting the shaft section in at least a second radial direction on the shaft one or more times. The axial deflection produces stress in at least a section of the polymeric tubular member which reduces the push force of the shaft and catheter. The invention is also directed to a catheter shaft formed using the method of the invention, the catheter shaft generally comprising a polymeric tubular member. The polymeric tubular member has a section with deflection-induced stress from axial deflection of the section, so that the shaft has a push force reduced by the axial deflection-induced stress. In one embodiment, the section of the shaft having axial deflection-induced stress is adjacent to proximal and distal shaft sections which do not have the axial deflection-induced stress. The method of the invention produces a catheter having improved catheter push and track…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.