Disposable element for use in a body fluid sampling device

• US 6,048,352 A
• Filed: 05/16/1997
• Issued: 04/11/2000
• Est. Priority Date: 05/17/1996
• Status: Expired due to Term

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Mercury Diagnostics, Inc.
• Inventors: Roe, Jeffrey N., Radwanski, Ryszard, Duchon, Brent G., Grage, Henry M., Douglas, Joel S., Sanchez, Michael J.
• Primary Examiner(s): LEWIS, WILLIAM W
• Application Number:
  US08/857,335
• Time in Patent Office: 1,061 Days
• Field of Search: 606/181, 606/182, 606/183, 600/583
• US Class Current: 606/181
• 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 2017/00765 Decreasing the barrier function of skin tissue by radiated energy, e.g. using ultrasound, using laser for skin perforation
• 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 5/14532 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 5/150083 by vibration, e.g. ultrasound
• 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 5/150137 by vibration enhancing collection by vibration A61B5/150175
• CPC Class Codes: A61B 5/15016 by accessories for bringing the piercing element into the body, e.g. through rotation of the piercing element
• CPC Class Codes: A61B 5/15019 Depth adjustment mechanism using movable stops located inside the piercing device housing and limiting the travel of the drive mechanism mechanisms using distal end caps A61B5/150183, mechanisms at the piercing element carrier proximal end A61B5/150198
• CPC Class Codes: A61B 5/150198 Depth adjustment mechanism at the proximal end of the carrier of the piercing element
• CPC Class Codes: A61B 5/150343 Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes sampling from within body cavities A61B5/150015, A61B5/150045
• 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 5/150396 Specific tip design, e.g. for improved penetration characteristics
• CPC Class Codes: A61B 5/150419 comprising means for capillary action
• CPC Class Codes: A61B 5/150427 Specific tip design, e.g. for improved penetration characteristics
• CPC Class Codes: A61B 5/150473 Double-ended needles, e.g. used with pre-evacuated sampling tubes 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 5/150503 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 5/150519 : 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 5/150824 : by visual feedback
• CPC Class Codes: A61B 5/150977 : Arrays of piercing elements for simultaneous piercing
• CPC Class Codes: A61B 5/150984 : Microneedles or microblades
• 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 5/15113 : 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 5/15136 : by use of radiation, e.g. laser
• 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 5/1519 : 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
• CPC Class Codes: B82Y 30/00 : Nanotechnology for materials or surface science, e.g. nanocomposites

Abstract

A disposable lancing element is adapted for use in a lancing device for making an incision through a user'"'"'s skin. The lancing element includes a body which defines a longitudinal axis, and has a skin-lancing member projecting from a front end thereof. A capillary tube is mounted in the body in laterally spaced relationship to the skin-lancing member and is slidable longitudinally relative to the body so as to be extended forwardly past the skin-lancing member. The body includes a plurality of circumferentially spaced, radially outwardly projecting bosses formed thereon for guiding the disposable element installation in a carrier element. The skin-lancing member may comprise a plurality of needles or barbs arranged in parallel side-by-side relationship. In lieu of a skin-lancing member, the disposable element may possess a longitudinal through-hole for conducting a skin-piercing laser light beam or pressurized fluid. A capillary tube may have an outwardly flared lower (inlet) end. A capillary tube may possess a sensor for sensing a level of fluid rising therein.

Claims

1. A disposable lancing element adapted for use in a lancing device for making an incision through a user'"'"'s skin, the disposable lancing element comprising:

a skin-lancing member; and

a capillary tube and a separate parallel tube formed unitary therewith, said parallel tube containing the skin-lancing member;

one of the capillary tube and skin-lancing member being slidable longitudinally relative to the other.

2. The disposable lancing element according to claim 1 wherein the disposable lancing element includes a body in which the capillary tube and skin-lancing member are disposed, the capillary tube being slidable longitudinally relative to the body and adapted to be extended forwardly past the skin-lancing member.

3. The disposable lancing element according to claim 2 wherein the skin-lancing member is slidable relative to the capillary tube.

4. The disposable lancing element according to claim 2 wherein the body includes a plurality of longitudinally spaced pairs of gripping fingers frictionally gripping the capillary tube.

5. The disposable lancing element according to claim 2 wherein the body includes a plurality of circumferentially spaced, radially outwardly projecting bosses formed thereon.

6. The disposable according to claim 5 wherein one of the bosses is spaced longitudinally from two others of the bosses.

7. The disposable lancing element according to claim 1 wherein the body includes a plurality of circumferentially spaced, radially outwardly projecting bosses formed thereon.

8. The disposable lancing element according to claim 7 wherein the body includes a plurality of longitudinally spaced pairs of gripping fingers frictionally gripping the capillary tube.

9. The disposable lancing element according to claim 1, wherein the skin-lancing member constitutes a first needle, and further including at least one additional needle disposed in parallel, laterally spaced relationship to the first needle, all needles projecting from the body by equal distances.

10. The disposable lancing element according to claim 1 wherein the skin-lancing member comprises a plurality of barbs disposed in parallel, laterally spaced relationship, all barbs projecting equal distances.

11. The disposable lancing element according to claim 1 wherein a lower end of the capillary tube is flared outwardly.

12. A disposable element adapted for use in a sampling device for sampling body fluid, comprising a unitary member formed from a pair of parallel passages arranged in side-by-side relationship, a skin-lancing member slidably mounted in one of the passages, the other passage defining a capillary tube for drawing-in body fluid.

13. The disposable element according to claim 12 wherein the two passages communicate with one another at adjacent ends thereof.