Catheter placement assembly

Details Catheter placement assembly Catheter placement assembly

1996-02-23

1998-01-06

Rimell, Sam

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604167, 604168, 604195, A61M 5178

Patent

active

057049149

ABSTRACT:
A catheter assembly is disclosed which includes a flexible catheter, a hub attached to the catheter which defines a lumen and an adjoining flash back chamber which communicate with the catheter, and a flexible resilient diaphragm attached to the hub through which a hypodermic needle such as a catheter introducer needle can be passed. The diaphragm prevents a liquid, such as blood, which has been introduced into the hub lumen from flowing past the diaphragm and beyond the hub when the diaphragm is unpenetrated. A hollow tubular body may also be included to which a cannulated catheter needle can be either stationarily or movably attached. The body is removably attached to the hub behind the diaphragm. If movably attached to the body, the needle has a retracted position fully recessed within the body for safe storage and an advanced operative position extending through the diaphragm, hub and catheter. A needle occluding member may also be provided to prevent a liquid such as blood from flowing through the needle into the body. The member may be a movable guide wire or a stationary obturator member. A liquid outlet port can be provided on the side of the hub and a multi-position stop cock can be mounted on the hub to direct liquid flow from the catheter to the side port while blocking flow toward the diaphragm and vise versa.

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