Blood expression device
First Claim
1. A device for expressing blood from a wound site in dermal tissue, the device comprising, (a) a support member, and (b) a plurality of movable fingers coupled to the support member.
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Accused Products
Abstract
A device for expressing blood from a wound site formed in dermal tissue is constructed, in one embodiment, in the shape of a cap which can be removably mounted onto a lancing instrument. The blood expression device includes an annular support member and a plurality of movable fingers integrally formed onto the support member in a spaced apart relationship, the free ends of the plurality of fingers together defining a generally circular opening. Each finger is adapted for pivotal displacement in such a manner that its free end projects into the circular opening. In use, the free ends of the plurality of fingers are disposed in contact against the dermal tissue immediately surrounding the wound site. As the device is urged downward onto the dermal tissue, the free ends of the plurality of fingers collapse inward and pinch into the dermal tissue so as to create a uniform ring of pressure around the wound site which, in turn, results in the expression of blood.
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Citations
16 Claims
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1. A device for expressing blood from a wound site in dermal tissue, the device comprising,
(a) a support member, and (b) a plurality of movable fingers coupled to the support member.
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12. A device for expressing blood from a wound site in dermal tissue, the device comprising,
(a) a crimping member, the crimping member comprising, (i) a support member, and (ii) a plurality of movable fingers coupled to the support member, and (b) a sleeve slidably mounted over the crimping member, the sleeve being sized and shaped to selectively exert an inward force onto each movable finger.
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15. A method of generating a blood sample from dermal tissue, the method comprising the steps of:
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(a) lancing the dermal tissue so as to create a wound site, and (b) after the lancing step, expressing blood out from the wound site using a blood expression device which comprises a support member and a plurality of movable fingers coupled to the support member.
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16. The combination of:
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(a) a lancing instrument, the lancing instrument including a sharpened needle, and (b) a blood expression device mounted on the lancing instrument over the sharpened needle, the blood expression device comprising a support member and a plurality of movable fingers coupled to the support member.
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Specification