Capillary blood sampling device
First Claim
1. An improved capillary blood sampling device comprising:
- (a) a longitudinal hollow tubular body having an access opening in the side to receive a lancet and open opposite ends;
(b) a finger position area defined at one of said open ends of said longitudinal body;
(c) a rotational operating member rotationally connected at the other of said open ends of said longitudinal body;
(d) a lancet holder positioned concentrically within said longitudinal body and said rotational operating member and adapted to be moved between a loading position and a released position;
(e) spring means within said rotational operating member coupled to said lancet holder and adapted to be compressed by said lancet holder when said lancet holder is moved away from said finger position area toward said loading position;
(f) said rotational operating member having spring operation means adapted to move said lancet holder toward said loading position to compress said spring means in response to rotation thereof and also adapted to release said lancet holder for movement toward said released position in response to further rotation thereof;
(g) whereby said lancet holder is responsive to rotation of said rotational operating member to move away from said finger position area and compress said spring means to permit loading of a lancet in said lancet holder and responsive to(h) further rotation of said rotational operating member to release said lancet holder to be propelled toward said finger position area by said spring means.
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Accused Products
Abstract
An improved capillary blood sampling device comprising a longitudinal body having a finger position area at one end and a longitudinal access opening to receive a spring-operated lancet holder. The lancet holder is moved longitudinally by a rotatable operating member at the other end of the body. Rotation of the operating member first withdraws the lancet holder away from the finger position area so that a lancet may be loaded while simultaneously compressing the spring. Further rotation in the same direction releases the lancet holder plunging the lancet point into the finger. When the lancet plunges into the finger the spring is compressed causing almost instant retraction of the lancet point from the finger. The finger position area may comprise a disposable platform. The lancet holder may have a ball socket adapted to receive a ball-based lancet.
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Citations
13 Claims
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1. An improved capillary blood sampling device comprising:
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(a) a longitudinal hollow tubular body having an access opening in the side to receive a lancet and open opposite ends; (b) a finger position area defined at one of said open ends of said longitudinal body; (c) a rotational operating member rotationally connected at the other of said open ends of said longitudinal body; (d) a lancet holder positioned concentrically within said longitudinal body and said rotational operating member and adapted to be moved between a loading position and a released position; (e) spring means within said rotational operating member coupled to said lancet holder and adapted to be compressed by said lancet holder when said lancet holder is moved away from said finger position area toward said loading position; (f) said rotational operating member having spring operation means adapted to move said lancet holder toward said loading position to compress said spring means in response to rotation thereof and also adapted to release said lancet holder for movement toward said released position in response to further rotation thereof; (g) whereby said lancet holder is responsive to rotation of said rotational operating member to move away from said finger position area and compress said spring means to permit loading of a lancet in said lancet holder and responsive to (h) further rotation of said rotational operating member to release said lancet holder to be propelled toward said finger position area by said spring means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An improved capillary blood sampling device comprising:
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(a) a hollow body cylinder having an opening at each end with an orthogonal finger positioning area at one end and a longitudinal access opening between said finger positioning area and the other end; (b) a guide cylinder connected to and extending longitudinally from said other end of said body cylinder and having a longitudinal slot; (c) a lancet holding plunger slidably positioned within said guide cylinder and having a lancet receptacle at the end nearest said finger positioning area adapted to hold a lancet with its pointed end aimed at said finger positioning area; (d) a coil spring having a plurality of turns encircling said lancet holding plunger; (e) a pin positioned orthogonally in said lancet holding plunger and extending between turns of said coil spring through the slot of said guide cylinder; (f) an operating cylinder rotationally connected to said other end of said body cylinder and encircling said guide cylinder; (g) said operating cylinder having an integral pin guide which engages said pin whereby, as said operating cylinder is rotated in one direction; (1) said lancet holding plunger is moved away from said finger positioning area compressing turns of said coil spring and permitting the loading of a lancet into said lancet receptacle via the longitudinal access opening of said body cylinder, (2) said turns of said coil spring are compressed still further, and (3) said lancet holding plunger is released propelling a lancet toward a finger at the finger position area to lance the finger and obtain a small capillary blood sample. - View Dependent Claims (10, 11, 12, 13)
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Specification