Disposable double point injection needle and an insulin injection system comprising a disposable double point injection needle

• US 9,095,660 B2
• Filed: 10/21/2011
• Issued: 08/04/2015
• Est. Priority Date: 05/31/2000
• Status: Expired due to Fees

• Current Assignee: Novo Nordisk A/S
• Original Assignee: Novo Nordisk A/S
• Inventors: Larsen, Carsten Gerner, Stenholt, Lars, Molin, Anders, Rex, Jorn, Larsen, Bjorn Gullak
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US13/278,769
• Publication Number:
  US 20120277724A1
• Time in Patent Office: 1,383 Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/3267 Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/59 Aesthetic features, e.g. distraction means to prevent fears of child patients
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/3257 Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
• CPC Class Codes: A61M 5/3272 having projections following labyrinth paths
• CPC Class Codes: A61M 5/347 rotatable, e.g. bayonet or screw A61M5/344 takes precedence
• CPC Class Codes: A61M 5/349 using adhesive bond or glues

Abstract

A disposable double pointed injection needle has a needle hub to which a thin needle cannula is permanently fastened 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 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. After injection the shield 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.

Claims

1. A method of preventing repeated use of a double pointed pen syringe injection needle following injecting of a patient with that needle, the method comprising:

exposing a sharpened end of a double pointed injection needle;

injecting a medication from a medication delivery device through the double pointed needle;

following injecting of a patient, automatically immediately after injection providing a locking visual indication that the needle has been used and cannot be reused, thereby preventing repeated use of the double pointed needle.

2. A method of determining whether a pen syringe needle assembly having a double pointed needle cannula has been previously used, the method comprising:

examining the needle assembly for a locking visual indicator in the form of a sheath around the needle cannula; and

if the sheath is visible, the sheath indicates previous use of the needle assembly, thereby preventing repeated use of the needle assembly.

3. A method of determining whether a pen syringe needle assembly having a double pointed needle cannula has been previously used, the method comprising:

examining the needle assembly for a locked visual indicator in the form of a shield

surrounding the double pointed needle cannula; and

if the shield surrounding the double pointed needle cannula is visible with a color

indicator, the shield confirms that the shield is locked in place and that the pen syringe needle assembly has been previously used.

4. A method of indicating previous use of a pen syringe needle assembly having a double pointed needle, the method comprising:

exposing a sharpened end of a double pointed needle;

injecting a medication from a medication delivery device through the double pointed needle;

following injecting of a patient, automatically activating a locking protective shield providing visual indication that the double pointed needle has been used, thereby minimizing inadvertent sticking of a person with the needle.