Intravascular catheter assembly incorporating needle tip shielding cap
US4964854A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Jan 23, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09116
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is an "over-the-needle" type catheter assembly which incorporates a shield operative to prevent inadvertant needle trauma after the needle has been withdrawn from the surrounding catheter sheath. The device of the invention comprises a tubular catheter sheath having an elongate piercing member (e.g. a needle) initially disposed in an "assembled" position within the lumen of the tubular sheath. The elongate piercing member is subsequently withdrawable to a "retracted" position outside the lumen of the tubular sheath. A shield is incorporated into the catheter assembly and is operative to attach to and shield the tip of the elongate piercing member when it is withdrawn from its initial "assembled" position within the tubular sheath. Such shield thereby serves to prevent the elongate piercing member from causing inadvertant puncture wounds and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.