Method and apparatus for penetrating tissue

• US 7,491,178 B2
• Filed: 12/31/2002
• Issued: 02/17/2009
• Est. Priority Date: 04/19/2002
• Status: Expired due to Term

• Current Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Original Assignee: Pelikan Technologies, Inc.
• Inventors: Boecker, Dirk, Alden, Don, Freeman, Dominique M.
• Primary Examiner(s): Hindenburg; Max
• Assistant Examiner(s): HOEKSTRA, JEFFREY GERBEN
• Application Number:
  US10/335,052
• Publication Number:
  US 20030199895A1
• Time in Patent Office: 2,240 Days
• Field of Search: 600/573, 600/575, 600/576, 600/583, 600/584, 606181-183
• US Class Current: 600/583
• CPC Class Codes: A61B 17/32093 for skin incisions
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• 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 5/150152 by an adequate mechanical impact on the puncturing location
• CPC Class Codes: A61B 5/150167 Adjustable piercing speed of skin piercing element, e.g. blade, needle, lancet or canula, for example with varying spring force or pneumatic drive
• CPC Class Codes: A61B 5/150175 Adjustment of penetration depth
• CPC Class Codes: A61B 5/150213 Venting means
• CPC Class Codes: A61B 5/150251 Collection chamber divided into at least two compartments, e.g. for division of samples injection syringes having more than one chamber A61M5/19; syringes for injection of two or more media A61M5/2448, A61M5/284; sample preparation for further analysis A61B5/150755
• 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 5/150435 Specific design of proximal end
• 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 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• CPC Class Codes: A61B 5/150809 by audible feedback
• CPC Class Codes: A61B 5/150816 by tactile feedback, e.g. vibration
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/15087 short range, e.g. between console and disposable using implanted devices A61B5/150877
• 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 5/15107 : Piercing being assisted by a triggering mechanism
• CPC Class Codes: A61B 5/15123 : comprising magnets or solenoids
• CPC Class Codes: A61B 5/15146 : Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means. multiple simultaneous cutting or piercing A61B5/150977
• CPC Class Codes: A61B 5/15151 : Each piercing element being stocked in a separate isolated compartment
• CPC Class Codes: A61B 5/15153 : Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15163 : Characterized by propelling the piercing element in an axial direction relative to the disc
• CPC Class Codes: A61B 5/15169 : Characterized by a rolled strip
• CPC Class Codes: A61B 5/15171 : Characterized by propelling the piercing element perpendicular to the direction of movement of the strip
• CPC Class Codes: A61B 5/15178 : Stocking means comprising separate compartments or units for new and for used piercing elements separate compartments for used piercing elements in piercing devices A61B5/15184
• CPC Class Codes: A61B 5/15186 : Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
• CPC Class Codes: A61B 5/157 : Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: A61M 2005/004 : Magazines with multiple needles directly inserted into an injection or infusion device, e.g. revolver-like magazines
• CPC Class Codes: B01L 2200/10 : Integrating sample preparation and analysis in single entity, e.g. lab-on-a-chip concept
• CPC Class Codes: B01L 2300/0663 : Whole sensors
• CPC Class Codes: B01L 2300/18 : Means for temperature control
• CPC Class Codes: B01L 3/5027 : by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip B01L3/5023 takes precedence; micromixers B01F33/30; microreactors for synthesis B01J19/0093; microcapillary devices in general B81B1/00
• CPC Class Codes: B01L 3/502715 : characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
• CPC Class Codes: G01N 33/4905 : Determining clotting time of blood by chemical methods G01N33/86, C12Q1/54
• CPC Class Codes: G01N 33/557 : using kinetic measurement, i.e. time rate of progress of an antigen-antibody interaction

Abstract

A body fluid sampling system for use on a tissue site has a housing and a penetrating member driver at least partially within the housing. At least one disposable is within the housing. The disposable includes an analyte sensor in a sample chamber that is configured to receive body fluid from a wound in tissue created by a penetrating member. A penetrating member is associated with the sample chamber. Each penetrating member and its associated sample chamber have a combined occupied volume of no more than about 5.0 cm³.

Claims

1. A body fluid sampling system for use on a tissue site, the system comprising:

a housing;

an electronic penetrating member driver at least partially within the housing;

at least one disposable within the housing, the disposable including an analyte sensor in a sample chamber configured to receive body fluid from a wound in tissue created by a penetrating member;

a penetrating member associated with the sample chamber the penetrating member and the associated sample chamber having a combined occupied volume of no more than about 5.0 cm³;

a transport mechanism configured to engage the at least one disposable, wherein the penetrating member is operatively engaged with the penetrating member driver when moved into position by the transport mechanism, wherein the driver provides the force to advance the penetrating member; and

a user interface on the housing and coupled to a programmable processor operatively programmed with software that has control instructions for the electronic penetrating member driver to keep a wound tract created by a penetrating member open for a sufficient time to provide for spontaneous flow of blood for sample capture into an associated sample chamber, wherein the control instructions are selected from at least one of, velocity of a penetrating member, velocity of a penetrating member in or out of target tissue and a dwell time of a penetrating member in the tissue site, wherein the processor provides the user interface with an option selected from at least one of, velocity of a penetrating member, a desired velocity profile, a velocity of a penetrating member into the target tissue, velocity of the penetrating member out of the target tissue, dwell time of the penetrating member in the target tissue, and a target tissue relaxation parameter, the processor determining a time and position of tissue contact and depth of penetration in response to knowing, distance of a penetrating member tip portion from the target tissue, acceleration and displacement of the penetrating member, and a start position of the penetrating member.

2. The system of claim 1, wherein the user interface is configured to provide a user with at least one input selected from, depth of a penetrating member penetration, velocity of a penetrating member, a desired velocity profile, a velocity of a penetrating member into the target tissue, velocity of the penetrating member out of the target tissue, dwell time of the penetrating member in the target tissue, and a target tissue relaxation parameter.

3. The system of claim 1, wherein the user interface provides at least one output to the user selected from, number of penetrating members available, number of penetrating members used, actual depth of penetrating member penetration on a target tissue, stratum corneum thickness, force delivered on a target tissue , energy used by the electronic penetrating member driver to drive a penetrating member into the target tissue, dwell time of the penetrating member, battery status, system status, consumed energy, speed profile of a penetrating member, information relative to contact of a penetrating member with target tissue before penetration by the penetrating member, and information relative to a change of speed of a penetrating member as it travels to the target tissue.

4. The system of claim 1, further comprising:

a data interface configured to couple the body fluid sampling system to at least one of, support equipment with a data interface and the internet.

5. The system of claim 1, wherein a support equipment is selected from at least one of, a base station, home computer, central server, and main processing equipment for storing glucose level information.

6. The system of claim 4, wherein the data interface is selected from at least one of, Serial RS-232, modem interface, USB, HPNA, Ethernet, optical interface, IRDA, RF interface, cellular telephone interface, 2 way pager interface, parallel port interface standard, near field magnetic coupling, RF transceiver and a telephone systems.

7. The system of claim 1, wherein the user interface includes a real time clock and one or more alarms to provide a user with a reminder of when a next target penetrating event is needed.

8. The system of claim 1, wherein the processor is configured to assist in an adjustment of force applied to the electronic penetrating member driver in response to a target tissue parameter.

9. The system of claim 1, further comprising:

a user interface processor coupled to the user interface.

10. The system of claim 1, further comprising:

a memory for storing a target tissue parameter.

11. The system of claim 1, further comprising:

a memory for storing data on target tissue penetrating performance.

12. The system of claim 1, further comprising:

a memory for storing at least one of, a number of penetrating members used, number of target tissue penetrating events, time and date of the last selected number of target tissue penetrating events, time interval between alarm and target tissue penetrating event, stratum corneum thickness, time of day, energy consumed by the electronic penetrating member driver to drive a penetrating member into the target tissue, depth of penetrating member penetration, velocity of the penetrating member, a desired velocity profile, velocity of the penetrating member into the target tissue, velocity of the penetrating member out of the target tissue, dwell time of the penetrating member in the target tissue, a target tissue relaxation parameter, force delivered on the target tissue, battery status, system status, consumed energy, speed profile of the penetrating member as the penetrating penetrates and advances through the target tissue, information relative to contact of a penetrating member with target tissue before penetration by the penetrating member, information relative to a change of speed of a penetrating member as it travels to the target tissue, information relative to consumed sensors and information relative to consumed penetrating members.

13. The system of claim 1, wherein the user interface responds to audio commands.

14. The system of claim 13, wherein the user interface includes a sensor for detecting audio commands.

15. The system of claim 1, wherein the user interface relays information to a user via an audio device.

16. The system of claim 1, wherein the user interface relays information to a user via a wireless device.