(12) United States Patent ao) Patent No.: us 6,183,489 Bi
Douglas et al. (45) Date of Patent: Feb. 6,2001
(54) DISPOSABLE ELEMENT FOR USE IN A BODY FLUID SAMPLING DEVICE
(75) Inventors: Joel S. Douglas, Santa Clara; Jeffrey N. Roe, San Ramon; Ryszard Radwanski, Morgan Hill; Brent G. Duchon, San Jose; Michael J. Sanchez, Mountain View; Henry M. Grage, Danville, all of CA (US)
(73) Assignee: Amira Medical, Scotts Valley, CA (US)
( * ) Notice: Under 35 U.S.C. 154(b), the term of this patent shall be extended for 0 days.
(21) Appl. No.: 09/238,158
(22) Filed: Jan. 28, 1999
Related U.S. Application Data
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(List continued on next page.)
Primary Examiner—Michael Buiz
Assistant Examiner—-William Lewis
(74) Attorney, Agent, or Firm—Burns, Doane, Swecker & Mathis, LLP
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 skinpiercing 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.
4 Claims, 5 Drawing Sheets