Blood lancet device
First Claim
1. A device for puncturing the skin for blood sampling with a blade, comprising:
- a) blade holder means for holding said blade in said device;
b) blade moving means connected to said blade holder means for rapidly moving said blade holder with said blade exclusively in a rectilinear motion in a first or puncturing direction motion immediately followed by a second or retracting direction motion for rapid puncturing and retraction to minimize pain;
c) said blade moving means including a rotary to translatory motion conversion means including a rotary driving element, whereby said rotary driving element, while moving in a single continuous motion in one direction, moves said blade holder through said first and then said second direction motions.
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Accused Products
Abstract
A blood letting lancet assembly for puncturing the skin of the finger tip for home use that causes less pain includes a mechanism for reproducibly orienting the assembly on the finger tip. The blade may be moved to any of a plurality of indexed positions within the device. By indexing the blade to the next position and reproducibly orienting the device on the finger tip, the user can avoid a second puncture close to the first puncture which reduces pain. A new method for rapidly advancing and retracting the blade further reduces pain. An accessory capillary collects the exact volume of blood required for a test and avoids needless attempts to collect excessive blood. A magnetic blade holder simplifies blade changing.
571 Citations
41 Claims
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1. A device for puncturing the skin for blood sampling with a blade, comprising:
- a) blade holder means for holding said blade in said device;
b) blade moving means connected to said blade holder means for rapidly moving said blade holder with said blade exclusively in a rectilinear motion in a first or puncturing direction motion immediately followed by a second or retracting direction motion for rapid puncturing and retraction to minimize pain;
c) said blade moving means including a rotary to translatory motion conversion means including a rotary driving element, whereby said rotary driving element, while moving in a single continuous motion in one direction, moves said blade holder through said first and then said second direction motions. - View Dependent Claims (2, 3, 4)
- a) blade holder means for holding said blade in said device;
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5. A device for puncturing the skin of the finger for blood sampling with a replaceable blade, comprising:
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(a) finger engaging means for engaging said finger in a reproducible orientation to control the location of said puncturing; (b) positioning means attached to said finger engaging means for positioning said finger engaging means at a fixed orientation to a landmark on said finger; (c) blade holder means for removably holding said blade in said device; (d) blade moving means connected to said blade holder means for rapidly moving said blade holder with said blade downward in a first or puncturing direction immediately followed by an upward or retracting direction motion for rapid puncturing and rectraction to minimize pain; (e) lancet assembly means containing said blade holder, and said blade moving means; (f) lancet assembly carrier means movably connected to said finger engaging means by indexable means to move said blade to a plurality of exact indexed positions relative to said finger, said lancet assembly means mounted within said lancet carrier means in axially moving condition; (g) skin surface sensing means attached to said lancet assembly means and adapted to engage said skin and position said assembly means axially within said carrier means a fixed distance above said skin to control the depth of said puncturing. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A device for puncturing the skin comprising
(a) skin puncturing means; -
(b) mounting means for mounting said skin puncturing means exclusively for translational, rectilinear motion in a predetermined direction between a retracted position in which said skin puncturing means is in a non-skin puncturing location and an extended position in which said skin puncturing means can affect said puncturing of said skin; and (c) actuation means for actuating said translational rectilinear motion of said mounting means, said actuation means including drive means movable over a predetermined path between a first end position, an intermediate position, and a second end position, and connection means for connecting said drive means to said mounting means;
said drive means, said predetermined path, and said connection means being so arranged that as said drive means moves from said first end position through said intermediate position to said second end position in a continuous motion in one direction said mounting means moves said skin puncturing means from said retracted position when said drive means is in said first end position, to said extended position when said drive means is in said intermediate position, to said retracted position when said drive means is in said second end position, thereby rapidly and continuously moving said skin puncturing means through said extended position for puncturing said skin in order to minimize the pain created thereby. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A device for puncturing the skin comprising:
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(a) skin puncturing means; (b) mounting means for mounting said skin puncturing means for translational motion in a predetermined direction between a retracted position in which said puncturing means is in a non-skin puncturing location and an extended position in which said skin puncturing means can effect said puncturing of said skin; (c) actuation means for actuating said translational motion of said mounting means; and (d) a housing extending longitudinally in said predetermined direction and including an aperture, said mounting means and said actuation means being mounted within said housing such that said skin puncturing means extends from said aperture in said housing when in said extended position and is contained within said housing when in said retracted position, said housing including a first portion and a second portion, said second housing portion being longitudinally displaced from and relatively rotatable with respect to said first housing portion in a plane transverse to said predetermined direction, said skin puncturing means being affixed to said second housing portion, said first housing portion including body part engaging means for mounting said device relative to a predetermined location with respect to a body part, whereby upon said rotation of said second housing portion with respect to said first housing portion said skin puncturing means can be aligned with different sites on said body part while said first housing portion remains stationary. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A device for puncturing the skin comprising:
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(a) skin puncturing means; (b) mounting means for mounting said skin puncturing means for translational rectilinear motion in a predetermined direction between a retracted position in which said skin puncturing means is in a non-skin puncturing location and an extended position in which said skin puncturing means can affect said puncturing of said skin; (c) actuation means for actuating said translational rectilinear motion of said mounting means; (d) a housing extending longitudinally in said predetermined direction, and including an aperture, said mounting means and said actuation means being mounted within said housing such that said skin puncturing means extends from said aperture in said housing when in said extended position and is contained within said housing when in said retracted position, said housing including an internal housing portion and an external housing portion, said mounting means and said actuation means being mounted within said internal housing portion, said internal housing portion being entirely enclosed within said external housing portion and relatively longitudinally displaceable within said external housing portion independent of said translational motion of said skin puncturing means; and (e) skin sensor means extending from said internal housing portion for engaging said skin whereby said internal housing portion can be and for longitudinally locating said internal housing portion within said external housing portion at a predetermined distance from the skin that will not change during said puncturing such that said skin puncturing means will extend from said housing to puncture said skin by a predetermined depth when in said extended position. - View Dependent Claims (38, 39, 40, 41)
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Specification