Single piece wound drain catheter
US4465481A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Aug 14, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention comprises both a single piece wound drain catheter and the die from which such a catheter is extruded. The wound drain catheter of the present invention comprises a single, continuous flexible elongate member having a drain segment, a transition tube segment, and an extrusion tube segment. The drain segment comprises a fluted body having one or more longitudinal lumens in fluid communication with the wound in which the drain segment is located. The transition tube segment has internal cavities opening at one end into the lumens of the drain segment and at the other end into the central longitudinal cavity of the tubular extension tube segment. At least a portion of the drain segment is formed of a radiopaque material. The extension tube segment is formed of a translucent material, as is the outer portion of the transition segment. The entire flexible member is preferably made from a silicone elastomer having sufficient elasticity to permit the cross-sectional area of the member to decrease by at least 30% when a pulling force is applied to it. The die of the present invention, which is used to make the catheter of the present invention, comprises a die nozzle …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.