Indwelling placement device with guard
US4850961A · kind A · utility
Inventors
Key dates
| Filing date | Jul 30, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jul 30, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0631
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An indwelling placement device having an introducing needle and a catheter for infusing fluids into a blood vessel incorporates a guard for shielding the needle prior to extension from therewithin and for receiving the needle upon retraction thereinto to preclude an operator inadvertently contacting the needle after use. Once retracted, the needle cannot be extended from within the guard. Upon retraction of the needle into the guard, a button mates with the open end of a hollow hub of the needle to prevent outflow of residual blood therefrom. A valve is incorporated with the catheter to preclude blood outflow from the catheter upon withdrawal of the needle and prior to attachment of an intravenous line for conveying a fluid to be intravenously administered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.