Method of determining the concentration of an analyte in a body fluid and system in therefor
First Claim
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1. A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample, the method comprising the acts of:
- applying pressure to skin of a user with a pressure member, the pressure member including a film;
directing electromagnetic radiation onto at least a portion of the film to heat the skin of the user at a site of the pressure, which softens the skin of the user at the site of the pressure;
stretching the skin by use of the applied pressure member, the stretching creating a tear in the skin such that the applied pressure causes the body fluid sample to flow from the tear.
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Abstract
A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample comprises applying pressure to the skin of the user. The skin is stretched so as to create a tear in the skin such that the applied pressure causes the body fluid to flow from the tear. The body fluid flowing from the tear is collected. Disclosed is also a pressure member for applying pressure to and stretching skin in preparation for forming a tear in the skin.
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Citations
26 Claims
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1. A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample, the method comprising the acts of:
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applying pressure to skin of a user with a pressure member, the pressure member including a film; directing electromagnetic radiation onto at least a portion of the film to heat the skin of the user at a site of the pressure, which softens the skin of the user at the site of the pressure; stretching the skin by use of the applied pressure member, the stretching creating a tear in the skin such that the applied pressure causes the body fluid sample to flow from the tear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample, the method comprising the acts of:
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applying pressure to skin of a user with a pressure member, the pressure member including a skin-contacting area, the skin-contacting area forming an aperture therethrough in which the body fluid sample is collected; applying a film to the skin with the skin-contacting area, the film including a mediation material; directing electromagnetic radiation onto at least a portion of the film to cause the mediation material to convert the radiation to thermal energy which forms an aperture in the film and assists in creating a tear in the skin; and stretching the skin by use of the applied pressure member, the stretching creating the tear in the skin such that the applied pressure causes the body fluid sample to flow from the tear. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample, the method comprising the acts of:
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applying pressure to skin of a user with a pressure member, the pressure member including a film, the film comprising a gelatin layer having high electromagnetic energy absorbent particles suspended therein, the high electromagnetic energy absorbent particles being configured to produce heat when excited by high electromagnetic energy; transferring the produced heat to the skin of the user at a site of the applied pressure, which softens the skin of the user at the site; and stretching the skin by use of the applied pressure member, the stretching creating a tear in the skin such that the applied pressure causes the body fluid sample to flow from the tear. - View Dependent Claims (20, 21)
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22. A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample, the method comprising the acts of:
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applying pressure to skin of a user with a pressure member, the pressure member including a body and a film, the body having a sidewall encompassing and extending from a top portion of the body, the top portion forming a recess that receives an insert, the insert having an aperture therein; directing electromagnetic radiation onto at least a portion of the film to heat the skin of the user at a site of the pressure, which softens the skin of the user at the site of the pressure; stretching the skin by use of the applied pressure member, the stretching creating a tear in the skin such that the applied pressure causes the body fluid sample to flow from the tear; and collecting the body fluid sample flowing from the tear. - View Dependent Claims (23, 24, 25)
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26. A method of obtaining a body fluid sample for determining the concentration of an analyte in the body fluid sample, the method comprising the acts of:
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applying pressure to skin of a user with a pressure member, the pressure member including a film, the film comprising at least a gelatin layer having high electromagnetic energy absorbent particles suspended therein, the high electromagnetic energy absorbent particles being dye particles or carbon black; heating the skin at the site of the pressure to soften the skin; stretching the skin by use of the applied pressure member, the stretching creating a tear in the skin such that the applied pressure causes the body fluid sample to flow from the tear; and collecting the body fluid sample flowing from the tear.
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Specification