Cannula assembly for syringe

Details Cannula assembly for syringe Cannula assembly for syringe

1989-11-20

1991-01-01

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604239, A61M 500

Patent

active

049814729

ABSTRACT:
This cannula assembly for injecting medicinal fluid into an animal's teat has a first tapered cannula formed with a circumferential bead at its wider end. A flexible jacket encloses the cannula and has another bead detachably engaging the bead on the cannula. A tapered second cannula extends forwardly from the jacket. This cannula is shorter than the first cannula. A flexible cap has an internal bead which detachably engages a corresponding bead at the sider end of the second cannula. This assembly provides the user with a choice of cannulas of two different sizes in treating a teat. In another form of the invention, a second flexible jacket has a bead which detachably engages a bead on the second cannula. A third cannula extends forwardly from the second jacket. The flexible cap detachably engages a bead on the third cannula, so that the user has a choice of cannulas of three different lengths in treating a teat.

REFERENCES:
patent: 3406687 (1968-10-01), Moyer
patent: 3434473 (1969-03-01), Smith
patent: 4453935 (1984-06-01), Newton
patent: 4737150 (1988-04-01), Baeumle et al.
patent: 4747837 (1988-05-01), Hauck
patent: 4850970 (1989-07-01), Sutherland
patent: 4883461 (1989-11-01), Sawyer

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