Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-11-02
1996-03-26
Weiss, John G.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, A61M 5178
Patent
active
055016715
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 complaint outer wall portion which indicates whether a needle connected to the device has entered a selected blood vessel. The visualization channel is vented to the outside to allow displaced air to escape, but has a gas permeable member to prevent blood from escaping. The visualization channel may have one, two, or more stages, with a first stage chamber which indicates initial penetration of a selected blood vessel, and a second stage chamber which fills more slowly and indicates that the needle remains positioned within the blood vessel. A third stage chamber with entrapped air which compresses slightly due to the heartbeat may also be used. Preferably, a compliant outer wall portion 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.
REFERENCES:
patent: 3734095 (1973-05-01), Santomieri
patent: 4016879 (1977-04-01), Mellor
patent: 4020835 (1977-05-01), Nordstrom et al.
patent: 4108175 (1978-08-01), Orton
patent: 4652256 (1987-03-01), Vaillancourt
patent: 4655750 (1987-04-01), Vaillancourt
patent: 4738658 (1988-04-01), Magro et al.
patent: 4758218 (1988-07-01), Kiefer et al.
patent: 4767408 (1988-08-01), McFarlane
patent: 4838269 (1989-06-01), Robinson et al.
patent: 4904240 (1990-02-01), Hoover
patent: 4946443 (1990-08-01), Hauser et al.
patent: 5059186 (1991-10-01), Yamamoto et al.
patent: 5066284 (1991-11-01), Mersch et al.
patent: 5098406 (1992-03-01), Sawyer
patent: 5108375 (1992-04-01), Harrison et al.
Arrow-Fischell EVAN Vascular Access Needle, advertisement. SoS Bloodless Entry Needle, advertisement.
Hillstead Richard A.
Larsen Charles E.
Rosen Jonathan J.
Weldon Thomas D.
Williams David O.
Novoste Corporation
Weiss John G.
LandOfFree
Vascular blood containment device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vascular blood containment device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vascular blood containment device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-912854