US 8,075,522 B2 · Disposable double pointed injection needle, and an insulin injection system comprising a disposable double pointed injection needle

Abstract

A disposable double pointed injection needle has a needle hub to which a thin needle cannula is permanently fasten and which needle hub can be mounted on to a syringe comprising a dose setting and injection mechanism and a cartridge containing a liquid medicine to be injected subcutaneously into a human body. The needle hub is provided with a safety shield guided on the outside surface of the needle hub. The safety shield is urged in a direction away from the needle hub by a spring located between the needle hub and the safety shield. The safety shield has a number of protrusions guided in guiding tracks on the outside surface of the needle hub. The guiding tracks are designed such that the safety shield during injection is moved towards the needle hub, and after injection is moved away from the needle hub by the spring and locked in an irreversible position where the safety shield covers the needle cannula and prevents accidental needle stick injuries.

Claims2

Dependent claims

A safety pen-needle assembly comprising:

a. a needle hub;
b. a needle having a cannula having a first portion with a sharpened distal end, the first portion protruding distally from the hub and a second portion protruding proximally from the hub and having an end for piercing a sealable membrane;
c. a sliding cover that slides over the cannula to conceal the sharp end of the first portion of the cannula, the cover being capable of sliding in a proximal direction away from the sharp end thereby exposing the sharp end so that it may be used to penetrate a portion of skin on a patient
d. a biasing means for keeping the cover over the sharp end of the first portion unless a force is exerted to slide the cover proximally away from the sharp end of the first portion;
e. a locking means for irreversibly locking the cover over the sharpened end of the first portion after an injection has been administered with the needle;
f. a visual indicating means for visually indicating that the needle has been previously used to administer an injection.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/097,414Filed 1 Apr 2005 · continuation

Priority

EP 0061005231 May 2000

Published

US 2005/0171485 A14 Aug 2005

Granted

13 Dec 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61M 5/3272
With guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position: having projections…
A61M 5/326
Being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel: fully automatic sleeve extension, i.e. in which…
A61M 5/24
Syringes: ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic
A61M 5/3257
Being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel: semi-automatic sleeve extension, i.e. in which…

Family

Application60/254,051Us provisional application · filed 7 Dec 2000

Application09/870,276Parent of this continuation · filed 30 May 2001

Application10/379,021Parent of this continuation · filed 4 Mar 2003

US 2005/0171485 A1Pre-grant publication · published 4 Aug 2005

US 6,547,764 B2Parent of this continuation

US 2002/0004648 A1Published application

US 2003/0139705 A1Published application

US 8,075,522 B2This patent

From the US filing history. Foreign family members aren’t listed.

Disposable double pointed injection needle, and an insulin injection system comprising a disposable double pointed injection needle

Life of this patent

Disposable double pointed injection needle, and an insulin injection system comprising a disposable double pointed injection needle

Life of this patent

Abstract

Claims2