Infection resistant blood sampling system
First Claim
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1. In an intravenous apparatus having a cannula with a first end upstream and a second end downstream, said second end connectable to a patient, a device for infection-resistant blood sampling from the patient, comprising:
- a directional valve disposed between said first and second ends of said cannula to selectively direct the flow of blood to a blood collection means in fluid communication therewith, said blood collection means comprising a uni-directional flow inhibitor disposed within said blood collection means between a blood collection port and said valve to inhibit re-entry of fluids into said cannula from said port.
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Abstract
A device and method for infection-resistant blood sampling from a patient which inhibits passage of microorganisms. The device includes a blood collection mechanism having a one-way valve between a blood collection port and a cannula. The device further includes a second channel with its upstream end in fluid communication with the cannula and its downstream end in communication with the blood collection mechanism.
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9 Claims
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1. In an intravenous apparatus having a cannula with a first end upstream and a second end downstream, said second end connectable to a patient, a device for infection-resistant blood sampling from the patient, comprising:
a directional valve disposed between said first and second ends of said cannula to selectively direct the flow of blood to a blood collection means in fluid communication therewith, said blood collection means comprising a uni-directional flow inhibitor disposed within said blood collection means between a blood collection port and said valve to inhibit re-entry of fluids into said cannula from said port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification