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.
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Citations
43 Claims
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1-24. -24. (canceled)
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25. A safety device for shielding a sharp tip of a cannula having an interior passage including first and second opposite ends, the sharp tip being positioned at the first end of the cannula, the safety device comprising:
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a shaft sized and shaped for being received into the passage of the cannula through the first end of the passage and extending to the second end of the passage, the shaft having a first end and a second end; a shield supported adjacent the second end of the shaft and constructed for receiving and substantially shielding the sharp tip of the cannula upon reception of the shaft in the cannula passage; a catch positioned on the shaft adjacent the first end of the shaft, the catch being adapted to prevent withdrawal of the shaft from the passage of the cannula when the shaft is received in the passage in a position where the shield receives the sharp tip of the cannula. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. The needle assembly for use in collecting a sample of tissue from a patient, the needle assembly comprising:
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a cannula at least partially defining an interior passage including first and second opposite ends, the first end having a sharp tip, the passage being adapted to receive the tissue sample; a shaft having a first end and a second end, the first end of the shaft being sized and shaped for being received into the passage of the cannula through the first end of the passage and extending to the second end of the passage for use in removing the sample collected in the cannula from the cannula; a shield associated with the second end of the shaft and constructed for receiving and substantially shielding the sharp tip of the cannula upon reception of the shaft in the cannula passage; a catch associated with the shaft, the catch being adapted to engage the needle assembly to prevent withdrawal of the shaft from the passage of the cannula when the shaft is received in the passage in a position wherein the shield receives the sharp tip of the cannula. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
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Specification