Lancet having a blood-collecting needle with a safety feature

• US 6,537,292 B1
• Filed: 09/25/2000
• Issued: 03/25/2003
• Est. Priority Date: 05/25/2000
• Status: Expired due to Fees

• Current Assignee: Baek-Shik Shin
• Original Assignee: Baek-Shik Shin, Choon-Bal Lee
• Inventors: Lee, Choon-Bal
• Primary Examiner(s): WORRELL JR, LARRY D
• Application Number:
  US09/669,453
• Time in Patent Office: 911 Days
• Field of Search: 606/181, 606/182, 606/183, 606/184, 606/185, 600/573, 600/576, 600/578, 600/538
• US Class Current: 606/182
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• 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 5/15113 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 5/1519 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 lancet having a blood-collecting needle with a safety feature, can prevent blood-mediated infections of AIDS, hepatitis, or other pathogenic bacteria due to careless impalement of a person collecting blood or handling waste disposition thereafter, by disposing a cap with a blood-collecting needle and repositioning the point end of the needle inside the cap via a return spring after collecting blood.

Claims

1. A lancet having a blood-collecting needle with a safety feature, which comprises:

(a) a cap that is connected to a cap connecting screw of a cylinder; and

(b) a blood-collecting needle,

wherein said cap comprises;

(c) a barrel having a lower part that is narrower than an upper part thereof, assembled with two sections;

(d) a screw thread corresponding to the cap connecting screw, the thread being located on an inner circumference of the upper part thereof;

(e) a stop projection protruding from the lower part thereof;

(f) a stroke stop projection located at an inner surface of the lower part, and at a set distance from stop projection;

(g) a needle stop projection at a lower end of the barrel; and

(h) an elastic return spring located at one side within the cap,

wherein said blood-collecting needle comprises;

(i) a stop ring located at an upper part of a body in which a needle is installed;

(j) a connecting rod located at the upper part of the body, and seated within a connection encasement;

(k) a square fixed ring located at a lower part of the body;

(l) a body fixed screw, located at the lower part of the body and having a screw thread on an exterior side thereof, corresponding to said needle stop projection;

(m) a detachment knob located at the lower part of the body; and

(n) a detachment part located between a part extending from said body fixed screw and the square fixed ring.