Dose indicating injection pen

Details Dose indicating injection pen Dose indicating injection pen

1993-06-25

1994-03-22

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604208, 604232, A61M 524

Patent

active

052959767

ABSTRACT:
Two embodiments of a multi-dose syringe both include structure for indicating the selected amount of liquid to be injected. A first element and a second element coupled respectively to the syringe housing and the plunger rod are adapted for calibrated movement with respect to each other, one of the first and second elements includes an outer portion having dose-indicating scale thereon, and another of the first and second elements surrounding said outer portion includes a window through which only a segment of the dose-indicating scale on said portion is visible, the visible portion indicating the amount of liquid selected for injection.

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U.S. Serial No. 07/960,314 filed Oct. 13, 1992 to Harris.

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