Filtered intracerebroventricular or intraspinal access port with

Details Filtered intracerebroventricular or intraspinal access port with Filtered intracerebroventricular or intraspinal access port with

1998-04-30

1999-04-27

McDermott, Corrine

Surgery

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

Material introduced into and removed from body through...

604 93, 604247, A61M 3100

Patent

active

058975284

ABSTRACT:
An access port and method of use is described that has a filter assembly along a fluid flow path through the access port. The access port is in fluid communication with a catheter that is surgically implanted in a patient's brain or intraspinal space. The filter assembly has a filter element and a series of one-way valves. The one-way valves allow the fluid to flow easily across the filter assembly in one direction but prohibit fluid flow through the one-way valves in the opposite direction. The one-way valves are oriented to allow fluid flow from the catheter to a chamber within the access port which can be accessed by a needle. Drug or other medication to be administered to the patient through a needle must pass through the filter before entering catheter to be ultimately administered to the patient.

REFERENCES:
patent: 4781680 (1988-11-01), Redmond et al.
patent: 5185003 (1993-02-01), Brethauer
patent: 5695490 (1997-12-01), Flaherty et al.
James M. Fdrake, Christian Sainte-Rose, "The Shunt Book" (Figures 2-6 and 2-7) Blackwell Science, Inc., 1995.

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