Self-sealing cannula

Details Self-sealing cannula Self-sealing cannula

1978-01-18

1979-12-11

Pellegrino, Stephen C.

Surgery

Truss

Pad

128347, 128221, A61M 2500

Patent

active

041778146

ABSTRACT:
Self sealing cannula automatically maintains insufflation pressure in a body cavity. A slotted elastomeric valve is positioned in the valve seat with the slot disposed over the passage. The elastomeric valve is compressed to seal the slot, thus sealing the cannula passage.
A surgical instrument such as a trocar or laparoscope may be slid through the cannula passage, which remains sealed regardless of the presence or absence of the surgical instrument within the passage.

REFERENCES:
patent: 3097646 (1963-07-01), Scislowics
patent: 3313299 (1967-04-01), Spademan
patent: 3454006 (1969-07-01), Langdon
patent: 3853127 (1974-12-01), Spademan
patent: 3994287 (1976-11-01), Turp et al.
patent: 4000739 (1977-01-01), Stevens
patent: 4079738 (1978-03-01), Dunn et al.

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