DEVICE FOR SAMPLING BLOOD DROPLETS UNDER VACUUM CONDITIONS

• US 20080199949A1
• Filed: 04/29/2008
• Published: 08/21/2008
• Est. Priority Date: 11/27/2001
• Status: Abandoned Application

• Current Assignee: SHL Telemedicine International Ltd. (SHL Telemedicine Ltd.)
• Original Assignee: SHL Telemedicine International Ltd. (SHL Telemedicine Ltd.)
• Inventors: Alroy, Yoram
• Application Number:
  US12/111,519
• Publication Number:
  US 20080199949A1
• Time in Patent Office: Days
• US Class Current: 435/288.7
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• 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 5/150229 Pumps for assisting the blood sampling
• 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 5/150786 Optical identification systems, e.g. bar codes, colour codes
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/150946 Means for varying, regulating, indicating or limiting the speed or time of blood collection
• CPC Class Codes: A61B 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• 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 5/15123 comprising magnets or solenoids
• CPC Class Codes: A61B 5/15136 by use of radiation, e.g. laser
• CPC Class Codes: A61B 5/1514 by use of gaseous agents, e.g. using suction aspiration or pressurized gas
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• 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 blood extraction device (100) and method for withdrawing a controlled number of drops of blood from a patient, in whom there is created an incision of such dimension that blood does not freely flow therefrom. A release unit (160) urges drops of blood to flow from the incision, for example by applying a vacuum, and a disabling unit (145, 146, 170) is coupled to the incision unit for disabling the release unit when a predetermined number of drops of blood have been withdrawn.

Claims

1. A body fluid testing device for performing chemical testing of a body fluid sample, said testing device comprising:

a chemical test strip holder for receiving a single use chemical test strip on which drops of the fluid are collected;

a drop counting unit responsive to body fluid flowing downwardly and freely on to the chemical test strip for signaling when a predetermined plurality of discrete drops of body fluid have been applied to said chemical test strip;

an optical imaging device for imaging the chemical test result obtained by the chemical test strip; and

an electronic circuit coupled to said imaging device for transmitting data representative of an image of the result to a remote unit.