LANCET PRICKING DEVICE

• US 20150012029A1
• Filed: 09/26/2014
• Published: 01/08/2015
• Est. Priority Date: 10/07/2009
• Status: Active Grant

• Current Assignee: Asahi Polyslider Company, Limited (Izumi-Cosmo Co., Ltd.), Izumi-Cosmo Co., Ltd.
• Original Assignee: Asahi Polyslider Company, Limited (Izumi-Cosmo Co., Ltd.), Izumi-Cosmo Co., Ltd.
• Inventors: SAEKI, Hideaki, HYOUE, Tomoyuki, IMORI, Hirokazu
• Granted Patent: US 9,693,712 B2
• Time in Patent Office: Days
• US Class Current: 606/182
• CPC Class Codes: A61B 5/1405 Devices for taking blood samples devices for taking samples of other body liquids A61B10/0045
• 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 5/15019 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 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150435 Specific design of proximal end
• 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 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• CPC Class Codes: A61B 5/151 Devices specially adapted for taking samples of capillary blood, e.g. by lancets , needles or blades
• CPC Class Codes: A61B 5/15107 Piercing being assisted by a triggering mechanism
• CPC Class Codes: A61B 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• 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 5/15115 Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
• 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 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing
• CPC Class Codes: F16F 1/122 where coils, e.g. end coils, of the spring are rigidly clamped or similarly fixed
• CPC Class Codes: F16F 1/123 characterised by the ends of the spring being specially adapted, e.g. to form an eye for engagement with a radial insert F16F1/122, F16F1/125 take precedence

Abstract

A lancet pricking device comprises a lancet, a launching spring, a trigger part and a holder housing the lancet, launching spring and trigger part. The lancet comprises a lancet body, lancet cap and pricking needle. The pricking needle is in both the lancet body and lancet cap. The trigger part has a pair of arms positioned inside the holder. The launching spring is attached to the lancet body. The lancet body is secured to the arms of the trigger part by an abutment of the lancet body on the arms such that the launching spring is compressed before a pricking operation. The trigger part cannot be pushed toward the inside of the holder before the lancet cap is removed, but can be pushed toward the inside of the holder after the cap is removed. The lancet body warps when pressed to release the secured lancet body.

Claims

1. A lancet pricking device, comprising:

a lancet;

a launching spring;

a trigger part; and

a holder for housing therein the lancet, the launching spring and the trigger part,

wherein a launching spring is attached to a spring-attachment portion provided at a rear-sided inner wall of the trigger part; and

the spring-attachment portion has a bent form of an elongated part with a free end and a fixed end.