Blood glucose sampling device

• US 8,333,715 B1
• Filed: 10/07/2009
• Issued: 12/18/2012
• Est. Priority Date: 10/07/2008
• Status: Expired due to Fees

• Current Assignee: Alferness, Clifton A.
• Original Assignee: Alferness, Clifton A.
• Inventors: Alferness, Clifton A.
• Primary Examiner(s): Dougherty, Sean
• Application Number:
  US12/575,405
• Time in Patent Office: 1,168 Days
• Field of Search: 600/575, 600/583, 600/584, 606181-186
• US Class Current: 600/584
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150068 by tissue compression, e.g. with specially designed surface of device contacting the skin area to be pierced
• CPC Class Codes: A61B 5/150099 by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
• CPC Class Codes: A61B 5/150229 Pumps for assisting the blood sampling
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150274 Manufacture or production processes or steps for blood sampling devices
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150755 Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/15161 Characterized by propelling the piercing element in a radial direction relative to the disc
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/15196 semi-automatically retracted, i.e. in which the retraction of the piercing unit requires a deliberate action by the user such as manual release of spring-biased retraction means
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: Y10T 29/49 Method of mechanical manufacture
• CPC Class Codes: Y10T 29/49826 : Assembling or joining

Abstract

A blood glucose sampling device is provided. The blood glucose sampling device includes a sensor cartridge having a plurality of blades oriented in a common direction of rotation about a central point. Each blade includes a test strip having a test region defined radially from the central point at a proximal end and a capillary aligned with a distal end of the test region and extending to an outer edge of the blade. Each blade also includes a cleaning element positioned adjacent to the test strip. A lancet is affixed to a lancet cartridge and aligned with the capillary formed in the test strip. A housing removably encloses the cartridges and includes an outer grip that surrounds a circumference of the housing and is shaped to fit between a thumb and finger. A test passage formed in the outer grip through which the test strip and lancet are positioned.

Claims

1. A blood glucose sampling device, comprising:

a sensor cartridge comprising a plurality of blades oriented in a common direction of rotation about a central point, each blade comprising;

a test strip comprising a test region defined radially on a surface of the test strip from an outer edge of the central point at a proximal end and further comprising a capillary aligned with a distal end of the test region and extending to an outer edge of the blade; and

a cleaning element positioned adjacent to the test strip in the common direction of rotation about the central point,

wherein the blades are positioned around the central point such that the test strip of one blade contacts the cleaning element of another blade;

a lancet affixed to a lancet cartridge and aligned with the capillary of the test strip; and

a housing removably enclosing the sensor cartridge and lancet cartridge, comprising;

an outer grip surrounding a circumference of the housing and movably shaped to conformably fit within a hand of a user between a thumb and a finger; and

a test passage formed in the outer grip through which the test strip and lancet are positioned.

2. A blood glucose sampling device according to claim 1, further comprising at least one of:

a cover pivotably attached to a substantially open side of the housing; and

one or more displays affixed to at least one of the housing and the cover.

3. A blood glucose sampling device according to claim 1, further comprising:

a test actuator located on the housing, wherein depression of the test actuator advances the test strip of the sensor cartridge into alignment with the lancet in the test passage and further wherein release of the test actuator advances the sensor cartridge in a common direction to align the cleaning element in the test passage.

4. A blood glucose sampling device according to claim 1, wherein the test passage is shaped to receive the finger from the hand of the user.

5. A blood glucose sampling device according to claim 1, further comprising:

a shaft provided within the housing and shaped to rotatably accommodate the sensor cartridge and the lancet cartridge via an opening.

6. A blood glucose sampling device according to claim 1, wherein the outer grip comprises at least one of nitinol wire and foam, and further wherein the outer grip impedes venous return in the finger of the user.

7. A mountable blood glucose sampling device, comprising:

a sensor cartridge comprising a plurality of blades oriented in a common direction of rotation about a central point, each blade comprising;

a test strip having a test region defined radially from the central point at a proximal end and a capillary aligned with a distal end of the test region and extending to an outer edge of the blade; and

a cleaning element positioned adjacent to the test strip in the common direction of rotation about the central point,

wherein the blades are positioned around the central point such that the test strip of one blade contacts the cleaning element of another blade;

a housing shaped to removably enclose the sensor cartridge and comprising a test passage opening formed on a back side of the housing;

a lancet affixed to an inside of the housing and slidably aligned at the test passage opening;

a test member pivotably affixed to the inside of the housing and positioned substantially parallel to and above one of the blades that is located over the test passage opening;

a mounting band attached to the housing and shaped to removably accommodate an extremity of a user; and

a suction element affixed to the back side of the housing and formed to facilitate contact between a portion of the extremity and the test passage opening.

8. A mountable blood glucose sampling device according to claim 7, further comprising at least one of:

a cover pivotably attached to a substantially open side of the housing; and

one or more displays affixed to at least one of the housing and the cover.

9. A mountable blood glucose sampling device according to claim 7, further comprising:

a plurality of buttons comprising at least one of a test button, a mode select button, a sensor select button, a lancet deploy button, a lancet retract button, and a suction button installed on the housing.

10. A mountable blood glucose sampling device according to claim 7, wherein the test element extends down toward a tip of the blade aligned over the test passage opening and extends a downward pressure on the tip.

11. A mountable blood glucose sampling device according to claim 7, wherein the sensor cartridge rotates within the housing to align a tip of at least one of the test strip and the cleaning element over the test passage opening.

12. A mountable blood glucose sampling device according to claim 7, further comprising:

a shaft provided within the housing and shaped to rotatably accommodate the sensor cartridge via the opening.