Cam-Actuated Medical Puncturing Device and Method
First Claim
1. A lancet device, comprising:
- a housing having a proximal end and a distal end;
a shield having a proximal end and a distal end, the shield proximal end disposed within the housing, and the shield being movable relative to the housing;
a skin puncturing assembly disposed within the housing and comprising a movable carrier and a skin puncturing element, a distal end of the skin puncturing element adapted for puncturing the skin of a patient, the carrier movable between a first position where the distal end of the skin puncturing element is disposed within the shield, and a second position where the distal end extends out of the shield in a puncturing position;
at least one flexure member in one of a first state in which the at least one flexure member engages the carrier to maintain the carrier in the first position, and a second state in which the at least one flexure member does not engage the carrier and the carrier is movable from the first position to the second position;
a drive spring disposed within the housing for biasing the carrier from the first position to the second position when the at least one flexure member is in the second state, wherein the drive spring biases the carrier toward the distal end of the shield; and
a retraction spring disposed within the shield, the retraction spring adapted to return the carrier to a position within the housing wherein the shield encompasses the skin puncturing element after the carrier reaches the puncturing position.
1 Assignment
0 Petitions
Accused Products
Abstract
The medical puncturing device includes a housing, a shield, and a skin puncturing assembly disposed within the housing. The shield is axially movable in the housing. The skin puncturing assembly includes a movable carrier and a skin puncturing element mounted to the carrier. A distal end of the skin puncturing element is adapted for puncturing the skin of a patient. The carrier is movable from a retracted position wherein the skin puncturing element is disposed within the shield to a puncturing position wherein the distal end of the skin puncturing element is exposed. The carrier is maintained in the retracted position by engagement of flexure members or a retaining tab with the carrier. A drive spring is provided to move the carrier from the retracted position to the puncturing position. A retraction spring is provided to return the carrier and skin puncturing element into the housing.
1 Citation
20 Claims
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1. A lancet device, comprising:
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a housing having a proximal end and a distal end; a shield having a proximal end and a distal end, the shield proximal end disposed within the housing, and the shield being movable relative to the housing; a skin puncturing assembly disposed within the housing and comprising a movable carrier and a skin puncturing element, a distal end of the skin puncturing element adapted for puncturing the skin of a patient, the carrier movable between a first position where the distal end of the skin puncturing element is disposed within the shield, and a second position where the distal end extends out of the shield in a puncturing position; at least one flexure member in one of a first state in which the at least one flexure member engages the carrier to maintain the carrier in the first position, and a second state in which the at least one flexure member does not engage the carrier and the carrier is movable from the first position to the second position; a drive spring disposed within the housing for biasing the carrier from the first position to the second position when the at least one flexure member is in the second state, wherein the drive spring biases the carrier toward the distal end of the shield; and a retraction spring disposed within the shield, the retraction spring adapted to return the carrier to a position within the housing wherein the shield encompasses the skin puncturing element after the carrier reaches the puncturing position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A lancet device comprising:
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a housing; a shield at least partially disposed within the housing and movable with respect thereto; a carrier having a puncture element and a first engagement surface, the carrier being movable between a first position where a distal end of the puncture element is disposed within the shield, and a second position where the distal end of the puncture element is exposed from the shield; and a flexural element having a second engagement surface, the flexural element being in one of a first state, in which the first engagement surface is engaged with the second engagement surface, and a second state, in which the first engagement surface is not engaged with the second engagement surface; wherein movement of said shield into the housing causes the flexural element to move between the first state and the second state, allowing the carrier to move to the second position. - View Dependent Claims (10, 11, 12, 13)
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14. A lancet device comprising:
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a housing; a shield disposed within the housing, the shield and housing being movable with respect to each other; a lancet assembly disposed within the housing and comprising a movable carrier and a skin puncturing element having a sharpened tip adapted for puncturing the skin of a patient, the carrier movable between a first position where the sharpened tip is disposed within the shield, and a second position where the skin puncturing element is exposed from the shield; at least one flexure member being in one of a first state, in which it engages a portion of the carrier to maintain the carrier in the first position, and a second state in which it does not engage the portion of the carrier and the carrier is able to move to the second position; and a drive member disposed within the housing for biasing the carrier towards the second position when the at least one flexure member is in the second state. - View Dependent Claims (15, 17, 18, 19, 20)
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16. The lancet device of claim 16, wherein the at least one flexure member is generally annular.
Specification