Biological fluid connection and delivery apparatus and method
AssigneeHelena Laboratories Corporation
InventorRobert J. Sarrine
Life of this patent
Estimating the term…
Abstract
A biological fluid collection and dispensing apparatus for attachment to a test tube includes a pump and a cannula assembly housed partially within the pump including a fluid transfer cannula and a vent cannula. Biological fluid or other fluid can be both collected and delivered with the apparatus, which apparatus may remain attached to the test tube during any processing of the collected biological fluid sample.
Claims10
Apparatus for drawing biological fluid from a patient into a test tube, the test tube being sealed with a puncturable closure, and for thereafter dispensing the biological fluid through the closure and from the test tube comprising:
- a flexible member adapted to be attached to said test tube;
- a removable cover on said flexible member;
- a cannula having a first portion extending through said cover and a second portion extending along said flexible member;
- said cannula second portion having a tip insertable through said closure;
- said cannula first portion having a tip extending through said cover for withdrawal of biological fluid from a patient, such that said biological fluid flows through said cannula into said sealed test tube;
- and
- said cover being removable from said flexible member such that upon flexing said flexible member, biological fluid flows from said sealed test tube through said cannula.
A biological fluid collection and dispensing apparatus for attachment to a test tube comprising:
- a flexible bulb pump;
- and
- cannula means disposed partially within the bulb pump, the cannula means including a fluid transfer cannula extending axially relative to the bulb pump and a vent cannula disposed adjacent to the fluid transfer cannula, and housing means within the bulb pump for supporting the cannula means.
A biological fluid collection and dispensing apparatus comprising:
- a partially evacuated glass test tube sealed with a rubber stopper;
- a cannula assembly attached to the test tube and rubber stopper, said cannula assembly including a flexible plastic bulb designed to removably mate with the test tube and stopper, a fluid transfer cannula and a vent cannula, the fluid transfer cannula extending axially through the flexible plastic bulb, the vent cannula disposed within the plastic bulb adjacent to the fluid transfer cannula, first adjacent ends of both cannulas partially piercing the rubber stopper when attached to the test tube, a second opposite end of the fluid transfer cannula having a score point disposed thereon external to the plastic bulb;
- cannula support means for movably supporting said cannulas with respect to the plastic bulb;
- a concentric cover partially and removably covering the plastic bulb and having finger stops for facilitating manually activated piercing of the rubber stopper by the fluid transfer cannula during use of the apparatus in fluid collection, the removal of said concentric cover causing the fluid transfer cannula to break at the score point thereon;
- and
- a collar positioned exteriorly of the plastic bulb axially intermediate the test tube and the cover, for preventing the cannulas from prematurely piercing through the rubber stopper of the test tube.
Dependencies are inferred from the claim text.