Forward shielding medical needle device
First Claim
1. A medical device, comprising:
- a needle cannula;
a hub comprising a proximal end, a distal end and a passageway extending therethrough in fluid communication with the needle cannula, the distal end of the hub supporting the needle cannula;
a release element fixed to the hub;
a generally hollow needle shield comprising a proximal end, a distal end and a pair of wings extending laterally from opposing sides thereof, the proximal end of the needle shield removably secured to the release element with at least a grippable portion of the hub extending out from the proximal end of the needle shield, the needle shield axially movable with respect to the needle cannula from a first position in which the needle cannula is exposed to a second position in which the needle cannula is shielded within the needle shield; and
a biasing member extending between the distal end of the hub and the proximal end of the needle shield, wherein activation of the release element releases the proximal end of the needle shield from securement, thereby causing the biasing element to axially urge the needle shield from the first position toward the second position.
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Accused Products
Abstract
A shielding medical device includes a needle cannula, a hub, a release element, a needle shield, and a biasing member. The hub has a proximal end, a distal end, and a passageway in fluid communication with the needle cannula. The distal end of the hub supports the needle cannula. The release element is fixed to the hub. The needle shield is hollow and has a proximal end, a distal end, and a pair of wings extending laterally from opposing sides. The proximal end of the needle shield is removably secured to the release element. The needle shield is axially movable with respect to the needle cannula from a first position in which the needle cannula is exposed to a second position in which the needle cannula is shielded within the needle shield. The biasing member is used to move the needle shield from the first to second positions.
55 Citations
28 Claims
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1. A medical device, comprising:
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a needle cannula;
a hub comprising a proximal end, a distal end and a passageway extending therethrough in fluid communication with the needle cannula, the distal end of the hub supporting the needle cannula;
a release element fixed to the hub;
a generally hollow needle shield comprising a proximal end, a distal end and a pair of wings extending laterally from opposing sides thereof, the proximal end of the needle shield removably secured to the release element with at least a grippable portion of the hub extending out from the proximal end of the needle shield, the needle shield axially movable with respect to the needle cannula from a first position in which the needle cannula is exposed to a second position in which the needle cannula is shielded within the needle shield; and
a biasing member extending between the distal end of the hub and the proximal end of the needle shield, wherein activation of the release element releases the proximal end of the needle shield from securement, thereby causing the biasing element to axially urge the needle shield from the first position toward the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A medical device, comprising:
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a needle cannula;
a hub comprising a proximal end, a distal end and a passageway extending therethrough in fluid communication with the needle cannula, the distal end of the hub supporting the needle cannula;
a generally hollow needle shield comprising a proximal end, a distal end and a pair of wings extending laterally from opposing sides thereof, the needle shield axially movable with respect to the needle cannula from a first position in which the needle cannula is exposed to a second position in which the needle cannula is shielded within the needle shield; and
a release element fixed to the hub and removably retaining the proximal end of the needle shield with at least a portion of the hub extending from the proximal end of the needle shield, the release element comprising a rotational locking engagement the hub and the proximal end of the needle shield, wherein activation of the release element releases the proximal end of the needle shield for movement of the needle shield from the first position toward the second position. - View Dependent Claims (19, 20, 21)
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22. A medical device, comprising:
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a needle cannula;
a hub comprising a proximal end, a distal end and a passageway extending therethrough in fluid communication with the needle cannula, the distal end of the hub supporting the needle cannula;
a generally hollow needle shield comprising a proximal end, a distal end and a pair of wings extending laterally from opposing sides thereof, the needle shield encompassing the hub with at least a portion of the hub extending from the proximal end of the needle shield, the needle shield axially movable with respect to the needle cannula from a first position in which the needle cannula is exposed to a second position in which the needle cannula is shielded within the needle shield; and
a biasing member extending between the hub and the needle shield and exerting a biasing force to urge the needle shield distally toward the second position, wherein when the needle shield is in the first position, the shield and the hub exhibit a mutual friction greater than the biasing force exerted by the biasing member when the needle shield is in the first position. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification