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; and
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.
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
36 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; and 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A penetrating member system for pricking a body part and withdrawing body fluid, comprising:
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a magazine including a plurality of chambers; a plurality of penetrating members, each of a penetrating member being movably mounted in a respective one of the plurality of chambers, each penetrating member having a widened portion and a tip; a plurality of deformable members, each of a deformable member sealing an associated chamber; and wherein during a puncture movement of a penetrating member, the tip of the penetrating member pierce the associated deformable member to produce an opening through which the tip then extends for puncturing a body part, the widened portion contacting the associated deformable member during the puncture movement to enlarge its opening. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for pricking a body part with a penetrating member of a penetrating member system that includes a housing with a deformable member and a penetrating member movably disposed in the housing, the penetrating member having a tip and a widened portion, the method comprising:
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positioning the deformable member of the housing on or near the body part; moving the penetrating member toward the deformable member during a puncture movement; piercing an opening in the deformable member with the tip; contacting the widened portion with the opening to enlarge the opening; and puncturing the body part. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. 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. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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Specification