Lancer

• US 7,651,512 B2
• Filed: 03/27/2003
• Issued: 01/26/2010
• Est. Priority Date: 08/03/1999
• Status: Expired due to Fees

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Bachman, Alan, Gabel, Jonathan B., Adams, Ray, Allen, William J., Chelak, Todd M., West, Robert E., Reed, Scott W.
• Primary Examiner(s): Erezo; Darwin P
• Application Number:
  US10/400,739
• Publication Number:
  US 20030187470A1
• Time in Patent Office: 2,497 Days
• Field of Search: 606/181, 606/182, 606/183, 606/184, 606/185, 600/573, 600/583
• 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 5/150106 Means for reducing pain or discomfort applied before puncturing; desensitising the skin at the location where body is to be pierced
• 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 5/150412 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 5/150587 by friction fit
• CPC Class Codes: A61B 5/150717 manually removed
• 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 5/15186 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

Abstract

A lancer device that enables a user to draw blood from a patient and discard the used lancet without touching it. The device also has an adjustable tip for selecting the depth of stylet penetration into the patient and a triggering mechanism that utilizes a yoke latch and a leaf spring to discharge the lancet. The lancer also has a dampening feature to reduce vibrations when the lancet is moving.

Claims

1. A lancer system comprising a lancer body assembly and an adjustment assembly, the adjustment assembly attachable to the lancer body assembly and comprising:

an outer member, having a distal portion and a proximal portion, the distal portion having an exterior surface, an interior surface and an orifice, a portion of the outer member being rotatable with respect to the lancer body assembly; and

an inner member, having a distal portion and a proximal portion, the distal portion having an interior surface, an exterior surface and an orifice;

wherein the inner member is fully contained within the outer member and positioned relative to the outer member such that when the outer member is rotated, the inner member moves relative to the body assembly, thereby adjusting the distance between the orifice of the inner member and the orifice of the outer member; and

wherein the outer member is prevented from axial motion relative to the body assembly.

2. The lancer system according to claim 1, wherein the inner member further comprises at least one protrusion, disposed on the exterior surface, for engaging a portion of the adjustment member to maintain an axial position of the inner member.

3. The lancer system according to claim 1, wherein the outer member has one or more slots in the interior surface, and the inner member has one or more protrusions, interacting with the one or more slots of the outer member, for restricting rotation of the inner member and providing linear movement of the inner member.

4. The lancer system according to claim 1, wherein the adjustment assembly further comprises markings for indicating the relative positions of inner member and outer member.

5. The lancer system according to claim 1, further comprising an aperture for exposing a depth setting.

6. The lancer system according to claim 5, further comprising a covering mounted on the aperture.

7. A lancer system comprising a lancer body assembly, a lancet having a stylet, and an adjustment assembly, the adjustment assembly attachable to the lancer body assembly and comprising:

an outer member, having a distal portion and a proximal portion, the distal portion having an exterior surface, an interior surface and an orifice, a portion of the outer member being rotatable with respect to the lancer body assembly; and

an inner member, having a distal portion and a proximal portion, the distal portion having an interior surface, an exterior surface and an orifice;

wherein the inner member is positioned relative to the outer member such that the lancet stylet protrudes from the orifice of the inner member and from the orifice of the outer member, and such that, when the outer member is rotated, the inner member moves relative to the body assembly, thereby adjusting the distance between the orifice of the inner member and the orifice of the outer member, to adjust the penetration depth of the lancet stylet; and

wherein the outer member is prevented from axial motion relative to the body assembly.