Disposable lancet
First Claim
1. A lancet for puncturing skin, said lancet comprising:
- a housing defining a passage having a proximal end and a distal end;
said housing including a recess;
an elongated body having a proximal end and a distal end;
said elongated body being so mounted in said passage as to reciprocate between a safe neutral position and a puncturing position and as to prevent its removal therefrom;
a puncturing device provided at said distal end of said elongated body;
said puncturing device extending from said distal end of said passage when said elongated body is in said puncturing position; and
a leaf spring received in said recess and being so removably mounted to said elongated body as to bias said elongated body towards said safe neutral position;
wherein said elongated body is moved from said safe neutral position to said puncturing position when a force is so applied thereto as to overcome the biasing action of said leaf spring.
1 Assignment
0 Petitions
Accused Products
Abstract
A disposable lancet for puncturing skin is disclosed herein. The lancet comprises a T-shaped housing, a reciprocally movable elongated body that embeds a puncturing needle and a leaf spring to bias the elongated body towards a safe neutral position, where the puncturing device is retracted in the housing. The elongated body is generally cross-shaped and is guided by projections in the housing that define a cross-shaped passage. The leaf spring is located in the handle portion of the T-shaped housing and cooperates with the elongated body via a slit provided in the elongated body. The lancet is operated by pressing a portion of the elongated body that extends from the handle portion of the housing at one end. The lancet is then in a puncturing position, where the puncturing needle extends out of the housing at the distal end thereof. The elongated body returns to the safe neutral position when the force applied to the elongated body is no longer sufficient to overcome the biasing action of the leaf spring.
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Citations
20 Claims
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1. A lancet for puncturing skin, said lancet comprising:
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a housing defining a passage having a proximal end and a distal end;
said housing including a recess;
an elongated body having a proximal end and a distal end;
said elongated body being so mounted in said passage as to reciprocate between a safe neutral position and a puncturing position and as to prevent its removal therefrom;
a puncturing device provided at said distal end of said elongated body;
said puncturing device extending from said distal end of said passage when said elongated body is in said puncturing position; and
a leaf spring received in said recess and being so removably mounted to said elongated body as to bias said elongated body towards said safe neutral position;
wherein said elongated body is moved from said safe neutral position to said puncturing position when a force is so applied thereto as to overcome the biasing action of said leaf spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A lancet for puncturing skin, said lancet comprising:
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a housing defining a passage having a proximal end and a distal end;
said housing including a recess;
an elongated body having a proximal end and a distal end;
said elongated body being so mounted in said passage as to reciprocate between a safe neutral position and a puncturing position and as to prevent its removal therefrom;
a puncturing device provided at said distal end of said elongated body;
said puncturing device extending from said distal end of said passage when said elongated body is in said puncturing position; and
a single leaf spring completely received in said recess and being so mounted to said elongated body as to bias said elongated body towards said safe neutral position and as to force with a snap action said elongated body towards said puncturing position when a predetermined force is applied as to overcome the biasing action of said leaf spring.
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Specification