LANCING DEVICE

• US 20140379016A1
• Filed: 06/25/2014
• Published: 12/25/2014
• Est. Priority Date: 06/25/2013
• Status: Abandoned Application

• Current Assignee: Tianjin Huahong Technology Company Limited
• Original Assignee: Tianjin Huahong Technology Company Limited
• Inventors: ZHANG, Libo
• Application Number:
  US14/314,052
• Publication Number:
  US 20140379016A1
• Time in Patent Office: Days
• US Class Current: 606/182
• 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 5/150152 by an adequate mechanical impact on the puncturing location
• 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 5/15113 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 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• 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 lancing device, including a main body and a head detachably connected to the main body. The main body includes a main sleeve, a guide sleeve fastened and inserted in the main sleeve, an inner core slidably installed in the guide sleeve, a tail cap component connected with the rear end of the inner core, a feeding pressure spring and a withdrawing pressure spring which are sleeved on the inner core, and a shoot key installed on the main sleeve. The guide sleeve is uniformly provided with several spring plates folding towards the inner core at positions close to the front end. The inner side of the front end of each spring plate contacts the outer profile of the inner core. The inner core is equipped with a stopper. The stopper is located at the rear end of the guide sleeve.

Claims

1. A lancing device, comprising:

a) a main body, the main body comprising a main sleeve, a guide sleeve fastened and inserted in the main sleeve, an inner core slidably installed in the guide sleeve, a tail cap component connected with a rear end of the inner core, a feeding pressure spring and a withdrawing pressure spring which are sleeved on the inner core, and a shoot key installed at the main sleeve; and

b) a head detachably connected to the main body;

wherein

the guide sleeve is uniformly provided with several spring plates folding towards the inner core at positions close to the front end;

the inner side of the front end of each spring plate contacts an outer profile of the inner core;

the inner core is equipped with a stopper;

the stopper is located at a rear end of the guide sleeve; and

when the feeding pressure spring is compressed, its front end face is pressed against the stopper.

2. The lancing device of claim 1, wherein the inner side of each spring plate is provided with a guide slot;

the outer profile of the inner core is provided with a matched guide projection; and

the guide projection is inserted into the guide slot.

3. The lancing device of claim 1, wherein a number of the spring plates is two, and two spring plates are arranged at an angle of 180°

.

4. The lancing device of claim 2, wherein a number of the spring plates is two, and two spring plates are arranged at an angle of 180°

.