Vascular blood containment device
US5980492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jan 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S604/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood containment, visualization and tactile confirmation device is provided for use with a vascular entry needle. The device includes a visualization channel and/or a compliant outer wall portion which indicates whether a needle connected to the device has entered a selected blood vessel. The visualization channel is optionally vented to the outside to allow displaced air to escape, but has a gas permeable member to prevent blood from escaping. Alternatively, the visualization channel is substantially sealed such that it is not significantly vented. Preferably, a compliant outer wall portion defining the visualization channel pulses with changes in blood pressure, thereby providing a tactile indication that the needle tip is properly positioned. The device has a guideway with a barrier of elastomeric material which prevents blood from passing therethrough, but which allows passage of an elongated medical instrument such as catheterization apparatus. A flange may optionally be disposed within the compliant membrane to prevent excess depression of the compliant membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.