WO1995010977B1 - Lancet device with irretrievably retractable piercing member - Google Patents

Lancet device with irretrievably retractable piercing member

Info

Publication number
WO1995010977B1
WO1995010977B1 PCT/US1994/011874 US9411874W WO9510977B1 WO 1995010977 B1 WO1995010977 B1 WO 1995010977B1 US 9411874 W US9411874 W US 9411874W WO 9510977 B1 WO9510977 B1 WO 9510977B1
Authority
WO
WIPO (PCT)
Prior art keywords
lancet
wall
perforable
recited
piercing
Prior art date
Application number
PCT/US1994/011874
Other languages
French (fr)
Other versions
WO1995010977A1 (en
Filing date
Publication date
Priority claimed from HU9302966A external-priority patent/HU219921B/en
Application filed filed Critical
Priority to US08/549,836 priority Critical patent/US5624458A/en
Priority to AU80824/94A priority patent/AU8082494A/en
Publication of WO1995010977A1 publication Critical patent/WO1995010977A1/en
Publication of WO1995010977B1 publication Critical patent/WO1995010977B1/en

Links

Abstract

A single-use disposable lancet device (1) comprising a housing (10) with a compressible, flexible upper wall (11) attached to the blunt end (32) of a lancet (13), is disclosed. The device (1) has a lancet holder (18) and a perforable wall (21) adjacent the tip (34) of the lancet. Compressing the flexible wall (11) drives the lancet tip (34) through the perforable wall (21) and into a body part to be pierced. Spring tension developed in the flexible wall (11) causes the lancet (13) to retract into the housing (10) after penetrating the body part. A stop mechanism (40) then prevents repeated vertical movement of the lancet (13). The lancet (13) is shielded before and after penetrating a finger or other body part.

Claims

AMENDED CLAIMS[received by the International Bureau on 11 May 1995 (11.05.95); original claims 1-20 replaced by amended claims 1-13 (3 pages)]
1. A lancet device, comprising: a skin piercing device having a sharp tip and a blunt end; a closed housing around the piercing device, the housing having a perforable wall adjacent the tip, and a flexible wall adjacent to the blunt end opposite the perforable wall for driving the piercing device through the perforable wall; and a variable depth stop mechanism comprising at least one inwardly deformable column on the perforable wall, and a detachable ring on the flexible wall, whereby downward pressure on the ring forces the column to deform inward and block repeated downward movement of the piercing device.
2. The lancet device as recited in claim 1, further comprising an annular rim having a shoulder on which the ring rests until dislodged by sufficient downward pressure.
3. The lancet device as recited in claim 1, further comprising a rim on the perforable wall whereby pressure of the rim on a body part causes the piercing device to protrude through the perforable wall to a predetermined depth.
4. The lancet device as recited in claim 1, wherein the flexible wall comprises a rigid center portion surrounded by a plurality of grooves capable of flexing.
5. The lancet device as recited in claim 2, wherein the annular rim is disposed to act as a puncture depth stop for the piercing device.
6. A lancet device, comprising: a needle having a sharp tip and a blunt end secured in a needle holder; a closed housing surrounding the needle, comprising: a perforable face adjacent the tip of the needle; a flexible face opposite the perforable face adjacent the blunt end of the needle and attached to the needle holder; and a stop mechanism comprising at least one laterally flexible column on the perforable wall, and a detachable ring on the flexible wall.
7. The lancet device as recited in claim 6, further comprising a rim on the perforable wall whereby pressure of the rim on a body part causes the piercing device to protrude through the perforable wall to a predetermined depth.
8. The lancet device as recited in claim 6, further comprising an annular rim having a shoulder on which the ring rests until dislodged by sufficient downward pressure.
9. The lancet device as recited in claim 6, wherein the flexible face comprises a rigid center portion surrounded by a plurality of grooves capable of flexing.
10. The lancet device as recited in claim 2, wherein the annular rim is disposed to act as a puncture depth stop for the piercing device.
11. A blood sampling device for fingerpricking comprising a piercing lancet enclosed in a housing comprising a puncturable wall portion opposite the piercing lancet, the piercing lancet being fixed in a cylindrical cavity; a compressible wall opposite the puncturable wall which allows the piercing lancet to move towards the puncturable wall portion; and a rim on the outer surface of the housing centered around a target puncture point of the lancet on the puncturable wall portion, whereby pressure of the rim on a body part causes the lancet to protrude through the puncturable wall to a predetermined depth.
12. The blood sampling device recited in claim 11, further comprising a variable depth stop mechanism having at least one inwardly deformable column on the puncturable wall, and a detachable ring on the compressible wall, whereby downward pressure on the ring forces the column to deform inward and block repeated downward movement of the lancet.
13. The blood sampling device as recited in claim 12, further comprising an annular rim having a shoulder on which the ring rests until dislodged by sufficient downward pressure.
PCT/US1994/011874 1993-10-20 1994-10-19 Lancet device with irretrievably retractable piercing member WO1995010977A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/549,836 US5624458A (en) 1993-10-20 1994-10-19 Lancet device
AU80824/94A AU8082494A (en) 1993-10-20 1994-10-19 Lancet device with irretrievably retractable piercing member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU9302966A HU219921B (en) 1993-10-20 1993-10-20 Device for making blood test, especially from fingers
HUP9302966 1993-10-20

Publications (2)

Publication Number Publication Date
WO1995010977A1 WO1995010977A1 (en) 1995-04-27
WO1995010977B1 true WO1995010977B1 (en) 1995-06-08

Family

ID=10984074

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/011874 WO1995010977A1 (en) 1993-10-20 1994-10-19 Lancet device with irretrievably retractable piercing member

Country Status (4)

Country Link
US (1) US5624458A (en)
AU (1) AU8082494A (en)
HU (1) HU219921B (en)
WO (1) WO1995010977A1 (en)

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