Tissue penetration device
First Claim
1. A penetrating member system for withdrawing body fluid from a body part, comprising:
- a housing;
a penetrating member reciprocally disposed in the housing, the penetrating member including a widened portion and a tip; and
a deformable member sealing the housing,wherein, during a puncture movement of the penetrating member, the tip pierces the deformable member to produce an opening in the deformable member, the widened portion contacting the deformable member during the puncture movement and enlarging the opening; and
the deformable member configured to reseal after a penetrating member tip has penetrated it without physically affecting the penetrating member'"'"'s cutting tip and edges;
wherein the housing includes a first end and a second end, the first end including the deformable member and the second end having a second film.
2 Assignments
0 Petitions
Accused Products
Abstract
A tissue penetration device and method of using same. The tissue penetration device may optionally include sampling and analyzing functions, which may be integrated. An embodiment provides control of a lancet used for sampling blood. Electric field coils or solenoids may drive the lancet using electromagnetic force. Advancement and retraction of a lancet may be controlled by a feedback loop monitoring the position and velocity of the lancet embodiments of the lancet driver can be configured to follow a predetermined tissue lancing profile. Embodiments of the invention include a lancet and method for using a lancet to maintain the patency of the wound tract once the lancet has cut into the skin.
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Citations
18 Claims
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1. A penetrating member system for withdrawing body fluid from a body part, comprising:
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a housing; a penetrating member reciprocally disposed in the housing, the penetrating member including a widened portion and a tip; and a deformable member sealing the housing, wherein, during a puncture movement of the penetrating member, the tip pierces the deformable member to produce an opening in the deformable member, the widened portion contacting the deformable member during the puncture movement and enlarging the opening; and the deformable member configured to reseal after a penetrating member tip has penetrated it without physically affecting the penetrating member'"'"'s cutting tip and edges;
wherein the housing includes a first end and a second end, the first end including the deformable member and the second end having a second film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A penetrating member system, comprising:
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a housing; a penetrating member reciprocally disposed in the housing, the penetrating member including a widened portion and a tip, the penetrating member configured to be movable between a retracted position and an extended position during a puncture movement; and wherein in the retracted position, a deformable member seals the housing and the tip is surrounded by the housing, in the extended position of the penetrating member, the tip extends through an opening in the deformable member that is created when the tip pierces the deformable member during the puncture movement, the widened portion contacting the deformable member and defining a size of the opening in the extended position, the deformable member configured to reseal after a penetrating member tip has penetrated it without physically affecting the penetrating member'"'"'s cutting tip and edges;
wherein during the puncture movement, the portion of the deformable member pierced by the tip becomes flared. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification