Fluid-expandable surgical retractor

Details Fluid-expandable surgical retractor Fluid-expandable surgical retractor

1992-08-14

1994-08-30

Rosenbaum, C. Fred

Surgery

Instruments

Internal pressure applicator

604104, A61M 2900

Patent

active

053423852

ABSTRACT:
A surgical retractor includes a generally annular bladder which is fluidly expandable so as to apply an outwardly-directed radial force against soft tissues. The inner and outer annular bladder walls are formed of a flexible resilient material with elastic properties to permit a variable amount of expansion in predetermined directions. A tube extending from the bladder connects the bladder to a three-way valve which is used to selectively inflate, by means of an attached pump, or to exhaust the bladder. A plurality of baffles within the bladder provide the retractor with a generally cylindrical shape. A woven fabric matrix is mounted to the inner annular wall to control expansion thereof. Pockets formed in the woven material permits the introduction of puncture- and incision-resistant shields to prevent accidental puncture of the bladder.

REFERENCES:
patent: 3774596 (1973-11-01), Cook
patent: 3817242 (1974-06-01), Uddenberg
patent: 3853120 (1974-12-01), Batista
patent: 3863639 (1975-02-01), Kleaveland
patent: 3882852 (1975-05-01), Sinnreich
patent: 4117847 (1978-10-01), Clayton
patent: 4274398 (1981-06-01), Scott, Jr.
patent: 4718151 (1988-01-01), LeVahn et al.
patent: 4747393 (1988-05-01), Medwid

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