VACUUM ASSISTED LANCING SYSTEM WITH CONTROLLED RATE AND METHOD FOR BLOOD EXTRACTION WITH MINIMAL PAIN
First Claim
1. A lancing system for blood extraction, comprising:
- a first tubular body having a central longitudinal axis, a lancing end and a longitudinally opposite free end, the lancing end including a sealing device for sealingly engaging a surface to be lanced;
a lancing assembly coupled to the body, the lancing assembly having a lance coupler slideably coupled with the lancing end of the body;
a main shaft slideably coupled with the body along the longitudinal axis, the main shaft having an actuating end disposed inside the body;
a first piston coupled to the main shaft and slideably and sealably disposed within the body;
wherein the body forms at least a portion of a vacuum chamber when the sealing device engages the surface to be lanced, the vacuum chamber being in fluid communication with the surface; and
wherein the lancing assembly is adapted to create a vacuum prior to lancing and dissipate the vacuum at a controlled rate.
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Abstract
A lancing system can include a first device body having a lancing end and a free end, the lancing end including a sealing device, a lancing assembly having a lance coupler slideably coupled with the lancing end, a main shaft slideably coupled with the body, a first piston disposed within the body, wherein the lancing assembly is adapted to create a vacuum prior to lancing and dissipate the vacuum at a controlled rate. The system can include a second device body fluidicly coupled to the first device body and having a second shaft and a second piston. A method of extracting blood can include coupling the sealing device to a surface, creating a vacuum, lancing the surface, and dissipating the vacuum at a controlled rate.
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Citations
33 Claims
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1. A lancing system for blood extraction, comprising:
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a first tubular body having a central longitudinal axis, a lancing end and a longitudinally opposite free end, the lancing end including a sealing device for sealingly engaging a surface to be lanced; a lancing assembly coupled to the body, the lancing assembly having a lance coupler slideably coupled with the lancing end of the body; a main shaft slideably coupled with the body along the longitudinal axis, the main shaft having an actuating end disposed inside the body; a first piston coupled to the main shaft and slideably and sealably disposed within the body; wherein the body forms at least a portion of a vacuum chamber when the sealing device engages the surface to be lanced, the vacuum chamber being in fluid communication with the surface; and wherein the lancing assembly is adapted to create a vacuum prior to lancing and dissipate the vacuum at a controlled rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of extracting blood with a vacuum assisted lancing system including a first tubular body having a lancing end and a longitudinally opposite free end, the lancing end including a sealing device for sealingly engaging a surface to be lanced, a lancing assembly coupled to the body, the lancing assembly having a lance coupler slideably coupled with the lancing end of the body, a main shaft slideably coupled with the body, the main shaft having an actuating end disposed inside the body, a first piston coupled to the main shaft and slideably and sealably disposed within the body, and a lance coupled to the lance coupler, the method comprising:
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coupling the sealing device to a surface; creating a vacuum by moving the first piston toward the free end of the first tubular body; lancing the surface; dissipating the vacuum at a controlled rate; and removing the sealing device from the surface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A method of extracting blood with a vacuum assisted lancing system including a first tubular body having a lancing end and a longitudinally opposite free end, the lancing end including a sealing device for sealingly engaging a surface to be lanced, a lancing assembly coupled to the body, the lancing assembly having a lance coupler slideably coupled with the lancing end of the body, a main shaft slideably coupled with the body, the main shaft having an actuating end disposed inside the body, wherein the body forms at least a portion of the vacuum chamber;
- a first piston coupled to the main shaft and slideably and sealably disposed within the body, a second tubular body disposed outside of the first tubular body, the second tubular body having a first end fluidicly coupled to the vacuum chamber and a longitudinally opposite second end, a second shaft slideably coupled with the second tubular body, a second piston coupled to the second shaft and disposed within the second tubular body, and a lance coupled to the lance coupler, the method comprising;
coupling the sealing device to a surface; creating a vacuum; lancing the surface; dissipating the vacuum at a controlled rate; and removing the sealing device from the surface. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
- a first piston coupled to the main shaft and slideably and sealably disposed within the body, a second tubular body disposed outside of the first tubular body, the second tubular body having a first end fluidicly coupled to the vacuum chamber and a longitudinally opposite second end, a second shaft slideably coupled with the second tubular body, a second piston coupled to the second shaft and disposed within the second tubular body, and a lance coupled to the lance coupler, the method comprising;
Specification