Tissue expander with self-contained injection reservoir and rein

Details Tissue expander with self-contained injection reservoir and rein Tissue expander with self-contained injection reservoir and rein

1985-10-16

1987-06-09

Truluck, Dalton L.

Surgery

Truss

Perineal

623 7, A61B 1900

Patent

active

046712550

ABSTRACT:
A tissue expander, of the type containing within the interior of its expandable shell an injection reservoir self-sealing to punctures by a hypodermic needle, is disclosed. The tissue expander includes a reinforcing member or insert which is substantially more rigid than the expandable shell, is larger than the injection reservoir, and is mounted to the expandable shell with its center substantially at the apex of the shell and substantially superimposed with the center of injection reservoir. The reinforcing member substantially prevents folding of the expandable shell over the injection reservoir and thereby substantially prevents inadvertent puncture of the expandable shell by a needle which is directed into the injection reservoir. Magnetically detectable material is mounted into the injection reservoir to enable an externally applied magnet locator to find the injection reservoir when the entire tissue expander assembly is temporarily implanted in a patient.

REFERENCES:
patent: 3845384 (1974-10-01), Stoutenberg et al.
patent: 4190040 (1980-02-01), Schulte
patent: 4217889 (1980-08-01), Radovan et al.
patent: 4222374 (1980-09-01), Sampson et al.
patent: 4428364 (1984-01-01), Bartolo
patent: 4574780 (1986-03-01), Manders
"Self-Sealing Silicone Valve", by Dow Corning Wright, 2 pages.

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