Improvements to implantable vascular access devices

Details Improvements to implantable vascular access devices Improvements to implantable vascular access devices

1991-07-09

1993-01-05

O'Connor, Cary E.

Surgery

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

Treating material introduced into or removed from body...

604175, A61M 5178

Patent

active

051766531

ABSTRACT:
Telescopic needles permit the perforation of implantable vascular accesses sealed by means of a flexible elastomeric membrane using needles of large diameter. The telescopic needles in order of increasing diameter, permit progressive perforation with widening of the orifice formed in the septum, with only the nozzle of greatest diameter remaining through the septum at the end of the operation.
The invention extends the area of application of implantable vascular access devices.

REFERENCES:
patent: 4569675 (1986-02-01), Prosl et al.
patent: 4632671 (1986-12-01), Dalton
patent: 4755173 (1988-07-01), Konopka et al.
patent: 4955861 (1990-09-01), Enegren et al.
patent: 4994027 (1991-02-01), Farrell
patent: 5026344 (1991-06-01), Dijkstra et al.

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