Devices and Methods for Accessing and Analyzing Physiological Fluid
First Claim
1. A system comprising:
- a housing including a plurality of devices, each device comprising;
(i) a skin-piercing member configured to access physiological fluid beneath a skin surface;
(ii) a biosensor configured to measure a characteristic of the accessed physiological fluid, the skin-piercing member being integrated with the biosensor via a physiological fluid transfer pathway; and
the housing having a ramped surface and an advancing member configured to move each device so that the skin-piercing member cooperates with the ramped surface to deflect the skin-piercing member and penetrate the skin surface at an oblique angle relative to the skin surface.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems, devices and methods for determining the concentration of physiological fluid analytes are provided. The subject systems have a plurality of biosensor devices present on a disposable cartridge. Each biosensor device includes a biosensor and a skin penetration means. In practicing the subject methods, a movement means of the device is used to move each biosensor device in a first direction that provides for penetration of the skin-piercing means into a skin layer followed by movement of the biosensor in a second direction that provides for removal of the skin-piercing means from the skin layer, where this movement profile provides for physiological fluid access and analyte concentration determination by the analyte sensor means. The subject systems, devices and methods for using the same find use in determining the concentration of a variety of different physiological fluid analytes, and are particularly suited for use in detection of physiological fluid glucose concentration.
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Citations
51 Claims
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1. A system comprising:
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a housing including a plurality of devices, each device comprising;
(i) a skin-piercing member configured to access physiological fluid beneath a skin surface;
(ii) a biosensor configured to measure a characteristic of the accessed physiological fluid, the skin-piercing member being integrated with the biosensor via a physiological fluid transfer pathway; and
the housing having a ramped surface and an advancing member configured to move each device so that the skin-piercing member cooperates with the ramped surface to deflect the skin-piercing member and penetrate the skin surface at an oblique angle relative to the skin surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 26, 27, 28, 29, 30)
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8-9. -9. (canceled)
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10. A system comprising:
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a housing, the housing having a skin-facing portion;
an aperture within the skin-facing portion;
a cartridge receivable within the housing, the cartridge comprising a plurality of devices, each device comprising;
(i) a skin-piercing member configured to access physiological fluid beneath a skin surface;
(ii) a biosensor configured to measure a characteristic of the accessed physiological fluid, the skin-piercing member being integrated with the biosensor via a physiological fluid transfer pathway;
the housing further comprising a ramped surface;
an advancing member configured to move each device so that the skin-piercing member cooperates with the ramped surface to deflect the skin-piercing member towards the aperture and pierce the skin surface; and
a meter disposed within the housing, the meter configured to measure a characteristic of the physiological fluid by applying a signal to the biosensor and receiving a resulting signal from the biosensor. - View Dependent Claims (16, 17, 18)
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11-15. -15. (canceled)
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19-25. -25. (canceled)
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31-36. -36. (canceled)
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37. A method for accessing a physiological fluid sample of a host and measuring the concentration of an analyte within the physiological fluid, comprising:
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(a) providing a cartridge in planar apposition to a skin surface of the host, the cartridge comprising a plurality of devices;
(b) moving the cartridge in a first direction, thereby causing an advancing member to cause a skin-piercing member to penetrate a skin surface at an oblique angle relative to the skin surface (c) transferring the physiological fluid from the skin-piercing member to the biosensor via a physiological fluid pathway; and
(d) moving the cartridge in a second direction to cause the advancing member to retract the skin-piercing member from the skin surface. - View Dependent Claims (38, 39)
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40. A method for accessing a physiological fluid of a host, comprising
(a) providing a system including a housing having a skin-facing portion; - an aperture within the skin-facing portion;
a cartridge receivable within the housing, the cartridge comprising a plurality of devices, each device comprising;
(i) a skin-piercing member configured to access physiological fluid beneath a skin surface;
(ii) a biosensor configured to measure a characteristic of the accessed physiological fluid, the skin-piercing member being integrated with the biosensor via a physiological fluid transfer pathway;
the housing further comprising a ramped surface;
an advancing member configured to move each device so that the skin-piercing member cooperates with the ramped surface to deflect the skin-piercing member towards the aperture and pierce the skin surface; and
a meter disposed within the housing, the meter configured to measure a characteristic of the physiological fluid by applying a signal to the biosensor and receiving a resulting signal from the biosensor,wherein the skin-facing portion of the housing is in contact with a section of a skin surface;
(b) moving the cartridge in a first direction to cause an advancing member to permit the skin-piercing member to move towards the aperture in the housing and penetrate the skin surface;
(c) transferring the physiological fluid from the skin-piercing member to the biosensor via the physiological fluid pathway; and
(d) moving the cartridge in a second direction to cause the advancing member to retract the skin-piercing member from the skin surface. - View Dependent Claims (41, 42, 43, 44)
- an aperture within the skin-facing portion;
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45-50. -50. (canceled)
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51. A system comprising:
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a housing, the housing including a skin-facing portion and an aperture within the skin-facing portion;
a cartridge receivable within the housing, the housing including a plurality of devices, each device comprising;
(i) a skin-piercing member configured to access physiological fluid beneath a skin surface;
(ii) a biosensor configured to measure a characteristic of the accessed physiological fluid, the skin-piercing member being integrated with the biosensor via a physiological fluid transfer pathway;
an advancing member configured to move the cartridge within the housing so that each device is positioned relative to an aperture, the advancing member having a clip configured to hold the biosensor; and
a meter disposed within the housing, the meter configured to measure a characteristic of the physiological fluid by applying a signal to the biosensor and receiving a resulting signal from the biosensor.
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Specification