Self-contained, safety blood collection system
First Claim
1. A fluid collection system for collecting a sample of a bodily fluid and comprising:
- a fluid collection tube having distal and proximal ends and in which a vacuum is to be established so that the fluid sample is collected within said tube under the influence of suction;
stopper means located at the distal end of said fluid collection tube to seal said distal end;
a needle cannula to penetrate the tissue of a patient at a first end and to communicate fluidically with said fluid collection tube at the opposite end thereof;
rotatable knob means located at the proximal end of said fluid collection tube;
piston means located at a relatively distal position within said fluid collection tube between said stopper means and said rotatable knob means; and
linking means extending between said piston means and said rotatable knob means, such that a rotation of said knob means causes said linking means to be pulled axially through said fluid collection tube and said piston means to be relocated proximally through said tube for expulsing air therefrom and establishing a vacuum therein.
1 Assignment
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Accused Products
Abstract
A self-contained, safety blood collection system comprising a shatter-resistent blood collection tube in which a vacuum may be manually established and in which a blood sample, or the like, may be collected by way of a retractable, single ended needle cannula. A piston is relocated from an as-packaged, distal position within the blood collection tube to a proximal position so as to evacuate the tube, whereby the tube is automatically infused with blood under the influence of suction. A controllable fluid valve is formed in an elastomeric stopper, and the stopper is located within the distal end of the blood collection tube, such that the volume and rate at which blood is collected within the tube can be selectively varied. An auxiliary fluid port is formed in the stopper through which successive blood samples may be collected in additional blood collection systems from the same veni puncture.
49 Citations
21 Claims
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1. A fluid collection system for collecting a sample of a bodily fluid and comprising:
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a fluid collection tube having distal and proximal ends and in which a vacuum is to be established so that the fluid sample is collected within said tube under the influence of suction; stopper means located at the distal end of said fluid collection tube to seal said distal end; a needle cannula to penetrate the tissue of a patient at a first end and to communicate fluidically with said fluid collection tube at the opposite end thereof; rotatable knob means located at the proximal end of said fluid collection tube; piston means located at a relatively distal position within said fluid collection tube between said stopper means and said rotatable knob means; and linking means extending between said piston means and said rotatable knob means, such that a rotation of said knob means causes said linking means to be pulled axially through said fluid collection tube and said piston means to be relocated proximally through said tube for expulsing air therefrom and establishing a vacuum therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A fluid collection system for collection a sample of bodily fluid and comprising:
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a fluid collection tube having distal and proximal ends and in which a vacuum is to be established so that the fluid sample is collected within said tube under the influence of suction; stopper means located at the distal end of said fluid collection tube to seal said distal end; closure means located at the proximal end of said fluid collection tube; piston means located at a relatively distal position within said fluid collection tube between said stopper means and said closure means; means by which to move said piston means axially and proximally through said fluid collection tube for expulsing air therefrom and establishing a vacuum therein; a needle cannula to penetrate the tissue of a patient at a first end and to communicate fluidically with said fluid collection tube at the opposite end thereof; and means by which said cannula is moved axially and reciprocally relative to said fluid collection tube between a retracted position, at which said cannula is shielded to prevent an accidental needle stick, and an extended position, at which said cannula is advanced so as to be able to penetrate the patient'"'"'s tissue. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification