Medical guide wire
US6648837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In medical guide wire (1A), a tapered second helical spring (7) is interposed continuously between a first helical spring (6) and the third helical spring (8) each wound around a leading end portion (2). From a middle portion of the second helical spring (7) to a leading top end of the first helical spring (6), a spiral blood stream path (10) is serially provided along a line gap (C1) of the helical springs (7, 6). A gap-stopper (12) is provided between the leading end portion (2) and the second helical spring (7) in order to induce a high speed spiral blood flow (17) along the spiral blood stream path (10) when the leading end portion (2) reaches a diseased area (13). The high speed spiral blood flow (17) provides the leading end portion (2) with the advancing force (F) and the rotational force (T).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.