TECHNIQUES AND DEVICES ASSOCIATED WITH BLOOD SAMPLING

• US 20100256524A1
• Filed: 03/02/2010
• Published: 10/07/2010
• Est. Priority Date: 03/02/2009
• Status: Abandoned Application

• Current Assignee: Seventh Sense Biosystems, Inc.
• Original Assignee: Seventh Sense Biosystems, Inc.
• Inventors: Davis, Shawn, Levinson, Douglas A., Haghgooie, Ramin, Chickering, Donald E. III, Bernstein, Howard, Michelman, Mark
• Application Number:
  US12/716,226
• Publication Number:
  US 20100256524A1
• Time in Patent Office: Days
• US Class Current: 600/576
• CPC Class Codes: A61B 5/0013 Medical image data A61B1/00011, A61B6/56, A61B8/56 take precedence
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/0077 Devices for viewing the surface of the body, e.g. camera, magnifying lens
• CPC Class Codes: A61B 5/1438 using pre-evacuated means
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/150221 Valves
• 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 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• 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 5/150442 Blade-like piercing elements, e.g. blades, cutters, knives, for cutting the skin
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150969 Low-profile devices which resemble patches or plasters, e.g. also allowing collection of blood samples for testing
• CPC Class Codes: A61B 5/150984 Microneedles or microblades
• CPC Class Codes: A61B 5/151 Devices specially adapted for taking samples of capillary blood, e.g. by lancets , needles or blades
• CPC Class Codes: A61B 5/15125 : comprising a vacuum or compressed fluids
• CPC Class Codes: A61B 5/157 : Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: A61B 5/411 : Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
• CPC Class Codes: A61B 5/4839 : combined with drug delivery
• CPC Class Codes: A61B 5/4845 : Toxicology, e.g. by detection of alcohol, drug or toxic products A61B5/4848 takes precedence
• CPC Class Codes: A61B 5/486 : Bio-feedback A61B5/375 takes precedence
• CPC Class Codes: A61B 5/685 : Microneedles
• CPC Class Codes: A61B 5/6898 : Portable consumer electronic devices, e.g. music players, telephones, tablet computers
• CPC Class Codes: A61B 5/743 : Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots

Abstract

The present invention generally relates to devices and techniques associated with diagnostics, therapies, and other applications, including skin-associated applications, for example, devices for delivering and/or withdrawing fluid from subjects, e.g., through the skin. In some embodiments, the device includes a system for accessing an extractable medium from and/or through the skin of the subject at an access site, and a pressure regulator supported by a support structure, able to create a pressure differential across the skin at least a portion of the access site. The device may also include, in some cases, a sensor supported by the support structure for determining at least one condition of the to extractable medium from the subject, and optionally a signal generator supported by the support structure for generating a signal relating to the condition of the medium determined by the sensor.

Claims

1. A device for withdrawing blood from the skin and/or from beneath the skin of a subject, the device comprising:

a fluid transporter;

a vacuum chamber having an internal pressure less than atmospheric pressure before blood is withdrawn into the device; and

a storage chamber, separate from the vacuum chamber, for receiving blood withdrawn from the subject through the fluid transporter when a negative pressure is applied to the skin of the subject.

2. The device of claim 1, wherein the fluid transporter comprises one or more microneedles.

3. The device of claim 2, wherein at least some of the microneedles are solid.

4. The device of claim 2, wherein at least some of the microneedles are hollow.

5. The device of claim 1, wherein the subject is human.

6. The device of claim 1, wherein the device is self-contained.

7. A device for withdrawing blood from the skin and/or from beneath the skin of a subject, the device comprising:

at least 6 microneedles; and

a storage chamber for receiving blood withdrawn from the subject, the storage chamber having an internal pressure less than atmospheric pressure prior to receiving blood.

8. The device of claim 7, wherein the device comprises at least 10 microneedles.

9. The device of claim 7, wherein at least some of the microneedles are solid.

10. The device of claim 7, wherein at least some of the microneedles are hollow.

11. A device for withdrawing blood from the skin and/or from beneath the skin of a subject, the device comprising:

a fluid transporter;

a first storage chamber for receiving blood withdrawn from the subject through the fluid transporter, the storage chamber having an internal pressure less than atmospheric pressure prior to receiving blood; and

a reaction entity contained within the first storage chamber able to react with an analyte contained within the blood, wherein a product of the reaction entity with the analyte is determinable.

12. The device of claim 11, wherein the product is determinable by an external apparatus able to analyze at least a portion of the device.

13. The device of claim 11, wherein the product of the reaction entity with the analyte is determinable as a change in fluorescence.

14. The device of claim 11, wherein the product of the reaction entity with the analyte is determinable as a change in an electrical property.

15. The device of claim 11, wherein the product of the reaction entity with the analyte is determinable as a change in an optical property.

16. The device of claim 11, wherein the product of the reaction entity with the analyte is determinable as a change in a magnetic property.

17. The device of claim 11, wherein the analyte includes glucose.

18. The device of claim 11, wherein the analyte includes oxygen.

19. The device of claim 11, wherein the analyte is an ion.

20. The device of claim 11, wherein the reaction entity includes an antibody.

21. The device of claim 11, wherein the reaction entity includes a protein.

22. The device of claim 11, wherein the reaction entity includes an enzyme.

23. A device for withdrawing blood from the skin and/or from beneath the skin of a subject, the device comprising:

a fluid transporter;

a storage chamber for receiving blood withdrawn from the subject through the fluid transporter, the storage chamber having an internal pressure less than atmospheric pressure prior to receiving blood; and

a potassium sensor able to determine potassium ions within blood contained within the device.

24. A device for withdrawing blood from the skin and/or from beneath the skin of a subject, the device comprising:

a fluid transporter;

a storage chamber for receiving blood withdrawn from the subject through the fluid transporter, the storage chamber having an internal pressure less than atmospheric pressure prior to receiving blood; and

a flow controller able to control blood flow into the storage chamber.

25. The device of claim 24, wherein the flow controller comprises a membrane.

26. The device of claim 24, wherein the flow controller comprises a valve.