Body fluid sampler

• US 6,940,591 B2
• Filed: 06/23/2003
• Issued: 09/06/2005
• Est. Priority Date: 09/08/1995
• Status: Expired due to Fees

• Current Assignee: Integ Incorporated (Johnson & Johnson)
• Original Assignee: Integ Incorporated (Johnson & Johnson)
• Inventors: Sopp, John P., Erskine, Timothy J., Latterell, Scott T., Brinda, Paul D.
• Primary Examiner(s): STAFIRA, MICHAEL PATRICK
• Application Number:
  US10/602,365
• Publication Number:
  US 20040008344A1
• Time in Patent Office: 806 Days
• Field of Search: 356244-246, 600/578, 600/579, 600/584, 128/78, 128/763, 128/770, 128/771
• US Class Current: 356/244
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 2010/008 Interstitial fluid
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 5/14514 using means for aiding extraction of interstitial fluid, e.g. microneedles or suction
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• 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 5/150358 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 5/150503 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 5/150755 Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
• CPC Class Codes: A61B 5/15105 Purely manual piercing, i.e. the user pierces the skin without the assistance of any driving means or driving devices
• CPC Class Codes: A61B 5/15194 fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

A sampling apparatus for sampling interstitial fluid includes a sampler having an external geometry selected to mate with an internal geometry of a testing apparatus such that the sampler may be inserted within the testing apparatus in a predetermined alignment and with a sampling location positioned accurately within a light path for detecting an amount of a desired constituent collected by the sampler.

Claims

1. A fluid sampler for collecting fluid from a patient for testing for constituents, the fluid sampler adapted for attachment to a body fluid testing apparatus, the fluid sampler comprising:

a member having a sample portion and a handle portion, the sample portion being positionable relative to the handle portion in a storage position and a sample position;

a medium carried on the sample portion of the sampler; and

a needle comprising a first end projecting from the sampler and a second end in fluid communication with the medium.

2. The fluid sampler of claim 1 wherein:

the handle portion is formed from a sampler housing defining a cavity; and

the sample portion is pivotally connected to the sampler housing.

3. The fluid sampler of claim 2 wherein the needle is positioned within the cavity of the sampler housing when the sample portion is in the storage position.

4. The fluid sampler of claim 2 further comprising:

a first cam follower coupled to the sample portion and responsive to a cam, the first cam follower being positioned to move the sample portion from the storage position to the sample position as the first cam coupler is displaced by the cam; and

a second cam follower coupled to the sample portion and responsive to the cam, the second cam follower positioned to move the sample portion from the sample position to the storage position as the second cam coupler is displaced by the cam.

5. The fluid sampler of claim 1 wherein the sampler is an elongated member having one end forming the sample portion and an oppositely disposed end forming the handle portion.

6. The fluid sampler of claim 1 wherein the medium is a membrane, the membrane being absorbent to fluid.