Percutaneous access device

Details Percutaneous access device Percutaneous access device

1987-02-17

1990-01-30

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604 93, 128DIG26, A61M 2502, A61F 100

Patent

active

048970816

ABSTRACT:
Disclosed is a percutaneous access device (PAD) for long-term skin penetration and use as an access port in the body of a patient. The buttonlike device includes a flat skirt for subdermal anchoring of the PAD and a neck through which a tube may extend for transmission of materials to or from the body. A two-stage porous bed covering the skirt and at least a portion of the neck promotes formation of a tight, infection-free barrier between the percutaneous access device and adjacent tissues, stabilizing the device for long-term use. The first stage of the bed retards downgrowth of epidermal cells for a time sufficient for mature collagen to form in the second stage, thereby permitting the tight dermal/biomaterial interface or barrier to form at a location near the junction of the two stages.

REFERENCES:
patent: 3783868 (1974-01-01), Bokros
patent: 4321914 (1988-03-01), Begovac et al.
patent: 4488877 (1984-12-01), Klein et al.
Science Digest, "The Year's Top 100 Innovations and the Men and Women Behind Them", pp. 52, 64-65, Dec. 1985.

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