Finger stick device

[54] FINGER STICK DEVICE

[75] Inventors: Robert W. Schenk, Ballwin; Alan B.

Ranford, St. Louis; Shawn C. Ray;
Richard A. Sunderland, both of St.
Charles; Curtis D. Kinghorn,

Florissant, all of Mo.

[73] Assignee: Sherwood Medical Company, St.

Louis, Mo.

[21] Appl. No.: 179,864
[22] Filed: Jan. 11,1994

[51] Int. CI.6 A61B 17/32

[52] U.S. CI 606/182; 606/181; 128/754

[58] Field of Search 128/749, 751,

128/754; 606/167, 170, 171, 172, 181, 182, 184, 185

[56] References Cited

U.S. PATENT DOCUMENTS

3,760,809 9/1973 Campbell, Jr. 128/314

3,902,475 9/1975 Begg et al 606/182

4,414,975 11/1983 Ryder et al 606/182

4,438,770 3/1984 Unger et al 606/172 X

4,503,856 3/1985 Cornell et al 128/314

4,539,988 9/1985 Shirley et al 128/314

4,628,929 12/1986 Intengan et al 606/182

4,643,189 2/1987 Mintz 606/182

4,856,515 8/1989 Turner et al 128/315

4,892,097 1/1990 Ranalletta et al 606/182

4,924,879 5/1990 O'Brien 128/770

5,105,823 4/1992 Blum 128/854

5,133,730 7/1992 Biro et al 606/182

5,184,625 2/1993 Cottone, Jr. et al 606/171 X

5,196,025 3/1993 Ranalletta et al 606/182

5,251,638 10/1993 Cottone, Jr. et al 128/751

5,269,316 12/1993 Spitalny 128/749 X

Primary Examiner—Sam Rimell

Attorney, Agent, or Firm—Andrew J. Beck; Montgomery W. Smith; David A. Warmbold

[57] ABSTRACT

A lancet type device having a movable and retractable lancet tip is disclosed. The lancet tip extends beyond the end of a lancet body. The device includes an actuating mechanism that moves and retracts the sharp distal lancet tip linearly into and out of contact with a patient's skin. The actuating mechanism includes an arm with a substantially "V" shaped groove. In one embodiment, the arm extends away from and pivots around the proximal end of the device. In another embodiment, the arm moves transversely across the device. A cylindrical cam follower protrudes from the lancet body. Contact between the groove and the cam follower moves the cam follower, and consequendy the lancet body, in a linear direction along the axis of the lancet body.

31 Claims, 22 Drawing Sheets