Lancet

• US 9,173,599 B2
• Filed: 01/10/2013
• Issued: 11/03/2015
• Est. Priority Date: 02/08/2012
• Status: Active Grant

• Current Assignee: Asahi Polyslider Company, Limited (Izumi-Cosmo Co., Ltd.)
• Original Assignee: Asahi Polyslider Company, Limited (Izumi-Cosmo Co., Ltd.)
• Inventors: Saeki, Hideaki
• Primary Examiner(s): OU, JING RUI
• Application Number:
  US14/124,438
• Publication Number:
  US 20140088631A1
• Time in Patent Office: 1,027 Days
• Field of Search: 606/181, 606/182, 606/183, 600/583
• US Class Current: 1/1
• 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 5/150435 Specific design of proximal end
• CPC Class Codes: A61B 5/150442 Blade-like piercing elements, e.g. blades, cutters, knives, for cutting the skin
• 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• 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 5/15119 comprising shape memory alloys
• 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

Abstract

There is provided a lancet comprising a lancet body, a lancet cap and a pricking component. In the lancet, the lancet body and the lancet cap are made of resin and the pricking component is made of metal. The pricking component is situated in both of the lancet body and the lancet cap, and the tip of the pricking component is covered with the lancet cap. The lancet body of the lancet is thin except for a rim portion of the body, and the rim portion of the lancet body has such a form that the rim portion extends symmetrically from the thinned portion of the lancet body.

Claims

1. A lancet comprising:

a lancet body made of resin;

a lancet cap made of resin; and

a pricking component made of metal, said pricking component being arranged in said lancet body and said lancet cap such that a tip of said pricking component is covered by said lancet cap;

wherein said lancet body extends along said pricking component in a longitudinal direction of said pricking component, said lancet body having a main portion surrounding said pricking component and a rim portion surrounding said main portion, said lancet body being configured such that said main portion has a flat side surface extending between sections of said rim portion located at opposite ends of said main portion;

wherein said rim portion is symmetrical with respect to a central point of said main portion in a cross-section through said lancet body perpendicular to said longitudinal direction of said pricking component;

wherein said rim portion of said lancet body is flexible such that said rim portion exhibits an inward flexibility;

wherein at least a longitudinal section of an outer profile of said rim portion of said lancet body is concave in both a direction toward said main portion of said lancet body along a height of said lancet body and a direction along a width of said lancet body; and

wherein a width of said main portion of said lancet body is smaller than a width of said rim portion of said lancet body by an amount in a range of 30% to 60%.

2. The lancet according to claim 1, wherein said rim portion of said lancet body extends outwardly in a direction perpendicular with respect to said main portion of said lancet body.

3. The lancet according to claim 1, wherein a rear end of said lancet body has a sloped surface.

4. The lancet according to claim 1, wherein a cross-section of said lancet body has an approximately H-shaped configuration.