US6322574B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable lancet
Assignee: Medical Plastic Devices MPD Inc
•
Filing: 1999-11-01
•
Granted: 2001-11-27
•
Expires: 2019-11-01
Abstract
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.
Inventors
- 👤 William A. Lloyd
- 👤 Martin Lancing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:09
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/151; A61B5/15142; A61B5/150007; A61B5/150015; A61B5/150022; A61B5/150374; A61B5/150381; A61B5/150412; A61B5/150534; A61B5/150541; A61B5/150549; A61B5/15058; A61B5/150618; A61B5/150694; A61B5/150717; A61B5/15101; A61B5/15103; A61B5/15107; A61B5/15113; A61B5/15115; A61B5/15117; A61B5/15126; A61B5/1513
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
157 words
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.
Claim 2
Dependent Claim
157 words
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.
Claim 3
Dependent Claim
15 words
A lancet as recited in claim 1 , wherein said housing includes two identical half-shells.
Claim 4
Dependent Claim
15 words
A lancet as recited in claim 1 , wherein said housing includes a handle portion.
Claim 5
Dependent Claim
14 words
A lancet as recited in claim 3 , wherein said housing is generally T-shaped.
Claim 6
Dependent Claim
19 words
A lancet as recited in claim 1 , wherein the exterior surface of said housing includes friction generating surfaces.
Claim 7
Dependent Claim
26 words
A lancet as recited in claim 1 , wherein said housing includes an end wall to limit the movement of said elongated body in said passage.
Claim 8
Dependent Claim
28 words
A lancet as recited in claim 1 , wherein said housing includes an elongated portion having a proximate end and a distal end and defining a passage therein.
Claim 9
Dependent Claim
26 words
A lancet as recited in claim 7 , wherein said distal end of said elongated portion includes an external contacting surface to contour a body part.
Claim 10
Dependent Claim
32 words
A lancet as recited in claim 1 , wherein a) said elongated body has a generally cross-shaped cross-section, and b) said passage includes a corresponding cross-shaped portion to guide said elongated body.
Claim 11
Dependent Claim
25 words
A lancet as recited in claim 1 , wherein said elongated body includes at least one fin to guide said elongated body in said passage.
Claim 12
Dependent Claim
27 words
A lancet as recited in claim 1 , wherein said elongated body includes a transversal notch configured and sized to receive a portion of said leaf spring.
Claim 13
Dependent Claim
16 words
A lancet as recited in claim 1 , wherein said recess includes two opposite angled walls.
Claim 14
Dependent Claim
26 words
A lancet as recited in claim 1 , wherein said recess includes opposite V-shaped notches configured and sized to receive opposite ends of the leaf spring.
Claim 15
Dependent Claim
15 words
A lancet as recited in claim 1 , wherein said puncturing device is a needle.
Claim 16
Dependent Claim
15 words
A lancet as recited in claim 14 , wherein said needle includes a bevelled point.
Claim 17
Dependent Claim
15 words
A lancet as recited in claim 14 , wherein said needle includes a tri-bevelled point.
Claim 18
Dependent Claim
18 words
A lancet as recited in claim 1 , wherein said puncturing device is embedded in said elongated body.
Claim 19
Dependent Claim
18 words
A lancet as recited in claim 1 , further comprising a removable cap to cover the puncturing device.
Claim 20
Dependent Claim
23 words
A lancet as recited in claim 18 , wherein said removable cap is integrally mounted to said distal end of said elongated body.
Claim 21
Dependent Claim
157 words
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 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.
Claim 22
Dependent Claim
157 words
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 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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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-11-26 | 2005-05-28 | 2005-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-26 | 2009-05-28 | 2009-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-26 | 2013-05-28 | 2013-11-27 | $7700.00 | Window Closed / Lapsed |