Body fluid sampling device and methods of use
First Claim
1. A lancing device for lancing the skin to sample blood or interstitial fluid, comprising:
- a housing;
a lancet carrier adapted to hold a disposable lancet, the carrier mounted adjacent a front end of the housing for movement relative thereto;
a cockable spring-biased hammer mechanism for displacing the lancet carrier forwardly to lance the skin;
a latch for releasably retaining the hammer mechanism in a cocked position; and
a latch-releasing mechanism including a skin-contacting portion for being rearwardly displaced in response to being pressed against the skin, and a latch-releasing portion for releasing the latch in response to the rearward displacement of the skin-contacting portion.
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0 Petitions
Accused Products
Abstract
A device for sampling body fluid includes a housing having a sleeve at a forward end thereof which is displaceable in response to being pressed against a user'"'"'s skin to trigger the firing of a lancet. After the lancet is removed from the incision, the sleeve is repeatedly pressed against the skin to depress a ring of body tissue in surrounding relationship to the incision to express body fluid outwardly through the incision. A pusher member is then actuated to push a capillary tube through a front end of the housing for drawing-in body fluid. The lancet is a disposable lancet which includes a body supporting a skin-lancing member and the capillary tube. The disposable lancet passes through an upper end of a lancet carrier when being installed or removed. The device cannot be armed until the disposable lancet is installed in the housing, because the capillary tube functions to push a safety device to a non-safety position.
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Citations
31 Claims
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1. A lancing device for lancing the skin to sample blood or interstitial fluid, comprising:
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a housing;
a lancet carrier adapted to hold a disposable lancet, the carrier mounted adjacent a front end of the housing for movement relative thereto;
a cockable spring-biased hammer mechanism for displacing the lancet carrier forwardly to lance the skin;
a latch for releasably retaining the hammer mechanism in a cocked position; and
a latch-releasing mechanism including a skin-contacting portion for being rearwardly displaced in response to being pressed against the skin, and a latch-releasing portion for releasing the latch in response to the rearward displacement of the skin-contacting portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A lancing device for lancing skin to sample blood or interstitial fluid, comprising;
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a housing;
a lancet carrier adapted to carry a disposable lancet and installable into a front end of the housing and being movable relative thereto;
a cockable spring-biased hammer mechanism for displacing the lancet carrier forwardly to lance the skin;
a latch-releasing mechanism for releasing the latch; and
a safety device normally disposed in a safety position for preventing the hammer mechanism from being cocked, and being movable to a non-safety position in response to installation of the lancet carrier into the housing for enabling the hammer mechanism to be cocked. - View Dependent Claims (17, 18, 19)
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20. A lancing device for lancing skin to sample blood or interstitial fluid, comprising:
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a housing;
a carrier carrying a disposable lancet, the disposable member including a body having a skin-lancing member and a capillary tube;
a spring-biased hammer for pushing the carrier forwardly so that the lancet lances the skin; and
a pusher member for pushing the capillary tube forwardly relative to the carrier for drawing-in fluid from lanced skin. - View Dependent Claims (21)
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22. In combination, a disposable lancet and a carrier therefore;
- the carrier comprising a sleeve adapted to be mounted in a housing;
the sleeve including an internal surface forming a through-passage extending from an upper end to a lower end of the sleeve;
the disposable lancet seated in the through-passage;
the internal surface configured to permit insertion and removal of the disposable lancet solely through the upper end;
the internal surface including at least one upwardly facing seat on which the disposable lancet is supported. - View Dependent Claims (23, 24)
- the carrier comprising a sleeve adapted to be mounted in a housing;
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25. A lancet carrier adapted to carry a disposable lancet, the lancet carrier comprising a sleeve adapted to be mounted in a housing, the sleeve including an internal surface forming a through-passage extending from an upper end to a lower end of the sleeve and configured to permit insertion and removal of a disposable lancet solely through the upper end, the internal surface including an upwardly facing seat adapted to support a disposable lancet.
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26. A sampling device for sampling body fluid, comprising:
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a housing defining a longitudinal axis;
incision-forming means mounted in the housing for forming an incision through a skin surface;
a stimulator member mounted at a forward end of the housing and being depressible against the skin to depress a ring of body tissue in surrounding relationship to the skin for urging body fluid toward and outwardly through the incision to form a drop of body fluid at an open end of the incision; and
a pusher member for moving the capillary tube forwardly relative to the lancet carrier for drawing-in the body fluid. - View Dependent Claims (27, 28)
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29. A method of taking a sample of body fluid, comprising the steps of:
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A) abutting a forward end of a housing against a skin surface of a user'"'"'s body;
B) forming an incision through the skin surface;
C) pressing the housing against the skin surface to repeatedly depress a ring of body tissue in surrounding relationship to the incision to urge body fluid toward and outwardly through the incision to form a drop of body fluid at an open end of the incision;
D) extending the capillary tube forwardly relative to the carrier; and
E) inserting a forward end of the capillary tube into the drop of body fluid to draw-in the body fluid. - View Dependent Claims (30, 31)
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Specification