Syringe assembly

Details Syringe assembly Syringe assembly

1996-03-15

1999-10-19

Stright, Ronald

Surgery

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

Treating material introduced into or removed from body...

604110, 604195, 604228, 604240, A61M 500, A61M 531

Patent

active

059680202

ABSTRACT:
A syringe assembly has a cylindrical hole extending between the inside and outside of the syringe body for attachably and detachably carrying a holding member that in turn carries a liquid flow tube (e.g., a needle or similar tube). The holding member seals with the syringe body and permits the flow tube to communicate between the inside and outside of the syringe body. The holding member has a main body that is axially insertable into the installing hole and can be axially pulled from the installing hole into the syringe body after the plunger is advanced to engage the holding member. An annular groove or a projection on the outside of the holding member fits with a corresponding projection or groove on the inner wall of the installing hole to seal the holding member to the syringe body along a plane perpendicular to the axis. The groove is narrower in the axial direction than the projection, producing an effective seal with a predetermined contact pressure which can be overcome when the holding member is drawn into the syringe body.

REFERENCES:
patent: 5047016 (1991-09-01), Dolgin et al.
patent: 5205824 (1993-04-01), Mazur
patent: 5205827 (1993-04-01), Novacek et al.
patent: 5256151 (1993-10-01), Chul
patent: 5489272 (1996-02-01), Wirtz
patent: 5531705 (1996-07-01), Alter et al.
patent: 5634903 (1997-06-01), Kurose et al.
patent: 5658257 (1997-08-01), Ryles

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