Self-sealing septa

Details Self-sealing septa Self-sealing septa

1999-03-29

2000-11-21

Kennedy, Sharon

Surgery

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

Treating material introduced into or removed from body...

604201, A61M 500

Patent

active

061496324

ABSTRACT:
A self-sealing needle injection hub has two resilient, elastomeric sealing members mounted adjacent one another in a housing, both having pierced passages through which a needle can be inserted. The outer member is thick and relatively rigid; the inner member is thinner and flexible. Both members are radially compressed by the housing, the inner member bowing away from the outer member at its center. The action of withdrawing a needle from the hub, combined with the pressure of blood on the inner member, maintains the inner member flat against the outer member, thereby further compressing the passage through the inner member.

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patent: 5154701 (1992-10-01), Cheer et al.
patent: 5643227 (1997-07-01), Stevens
patent: 5738334 (1998-04-01), Proni
patent: 5779697 (1998-07-01), Glowa et al.
patent: 5843046 (1998-12-01), Motisi et al.

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