Lancing device having saddle-shaped tip

• US 8,926,644 B2
• Filed: 07/30/2010
• Issued: 01/06/2015
• Est. Priority Date: 07/30/2009
• Status: Active Grant

• Current Assignee: Embecta Corporation
• Original Assignee: Becton, Dickinson & Co
• Inventors: Schiff, David, Sridharan, Akilesh, Albert, Jonathan D.
• Primary Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US13/261,153
• Publication Number:
  US 20120226123A1
• Time in Patent Office: 1,621 Days
• Field of Search: 606/181, 606/182, 606/183, 600/583, 604/136, 604/137, 604/138, 604/139
• US Class Current: 606/181
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• 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 5/150183 Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• 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 5/150503 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 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61B 5/15105 Purely manual piercing, i.e. the user pierces the skin without the assistance of any driving means or driving devices
• 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 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

A tip (41) for use with a lancing device (11). A wall extends upwardly from a base and forms a substantially saddle-shaped distal surface for interfacing with a patient'"'"'s skin. An opening (43) extends entirely through the tip. The tip (41) is movably received by a pressure sleeve assembly. The pressure sleeve assembly includes a housing (37) and a pressure sleeve movable between first and second positions. A spring (35) is connected between the housing (37) and the pressure sleeve. A lancet (21) is rigidly fixed to the housing (37) and is covered when the pressure sleeve is in the first position and exposed through the substantially saddle-shaped distal surface (42) of the tip (41) when the pressure sleeve is in the second position. The substantially saddleshaped distal surface (42) gathers the patient'"'"'s skin toward the center of the tip to facilitate expressing blood from a lanced site.

Claims

1. A tip for use with a lancing device, comprising:

a base having an outer perimeter;

a wall extending upwardly from said base and forming a substantially saddle-shaped distal surface for interfacing with a patient'"'"'s skin, said distal surface has a minor saddle angle between approximately 15 and 20 degrees, inclusive and a major saddle angle between approximately 45 and 60 degrees, inclusive;

an opening extending entirely through said tip, and

a lancet positioned within said opening for lancing the patient'"'"'s skin.

2. The saddle-shaped tip according to claim 1, wherein

said opening is substantially circular.

3. The saddle-shaped tip according to claim 1, wherein

said opening is substantially oval.

4. The saddle-shaped tip according to claim 1, wherein

said outer perimeter is substantially circular.

5. The saddle-shaped tip according to claim 1, wherein

said outer perimeter is substantially oval.

6. A lancing device, comprising:

a tip having a substantially saddle-shaped distal surface for interfacing with a patient'"'"'s skin, said distal surface having a minor saddle angle between approximately 15 and 20 degrees inclusive, and a major saddle angle between approximately 45 and 60 degrees inclusive; and

a pressure sleeve assembly movably receiving said tip, said pressure sleeve assembly including

a housing;

a pressure sleeve movable between first and second positions;

a spring connected between said housing and said pressure sleeve; and

a lancet rigidly fixed to said housing, said lancet being covered when said pressure sleeve is in said first position and said lancet being exposed through said substantially saddle-shaped distal surface of said tip when said pressure sleeve is in said second position.

7. The lancing device according to claim 6, wherein

said tip is connected to said pressure sleeve such that movement of said tip moves said pressure sleeve.

8. The lancing device according to claim 6, wherein

said lancet is removably connected to said housing.

9. The lancing device according to claim 6, wherein

said spring returns said pressure sleeve to said first position.

10. The lancing device according to claim 6, wherein

an oval opening is formed in said tip through which said lancet passes.

11. The lancing device according to claim 6, wherein

a circular opening is formed in said tip through which said lancet passes.

12. The lancing device according to claim 6, wherein

said lancing device is received by a glucose monitoring device.

13. The lancing device according to claim 6, wherein

said distal surface has a circular cross section.

14. The lancing device according to claim 6, wherein

said distal surface has an oval cross section.

15. The lancing device according to claim 6, wherein

said housing a substantially planar surface opposite said tip for providing stability to said lancing device when applying pressure to said tip.

16. A method of drawing blood, comprising the steps of

interfacing a distal surface of a tip of a lancing device with a patient'"'"'s skin at a lancing site, the distal surface of the tip being substantially saddle-shaped said distal surface having a minor saddle angle between approximately 15 and 20 degrees inclusive, and a major saddle angle between approximately 45 and 60 degrees inclusive;

and

passing a needle through the saddle-shaped distal surface of the tip to lance the patient'"'"'s skin at the lancing site.

17. A method of drawing blood according to claim 16, further comprising

applying pressure to the tip to pass the needle through the saddle-shaped distal surface of the tip to lance the patient'"'"'s skin at the lancing site.

18. A method of drawing blood according to claim 16, further comprising

activating a trigger mechanism to pass the needle through the saddle-shaped distal surface of the tip to lance the patient'"'"'s skin at the lancing site.