Device for Shielding a Sharp Tip of a Cannula and Method of Using the Same
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Accused Products
Abstract
A safety device for shielding a sharp tip of a tubular needle includes a shaft sized and shaped for being received into the passage of the tubular needle through a first end of the passage and extending to a second end of the passage. A shield is associated with the shaft and is constructed for receiving and substantially shielding the sharp tip of the needle. A catch is associated with the shaft. The catch prevents the withdrawal of the shaft from the passage of the needle when the shield is shielding the sharp tip of the needle.
102 Citations
28 Claims
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1-24. -24. (canceled)
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25. A method of shielding a sharp tip of a cannula at least partially defining an interior passage, the cannula including proximal and distal ends, wherein the sharp tip is formed on the distal end of the cannula, the method comprising:
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collecting a sample of at least one of a tissue and a bodily fluid from a patient in the passage of the cannula; inserting a shaft into the passage through the distal end thereof to push the sample out of the proximal end of the passage to collect the sample, the step of inserting including shielding the sharp tip of the cannula with a shield when the shaft is inserted a predetermined distance into the cannula; and retaining the shaft relative to the cannula against movement out of the passage through the distal end so as to hold the shield over the sharp tip. - View Dependent Claims (26, 27, 28)
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Specification