Needle assembly for drug pump

Patent metadata

Field	Value
Publication number	US-9492610-B2
Application number	US-201514931439-A
Country	US
Kind code	B2
Filing date	Nov 3, 2015
Priority date	Jan 19, 2010
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

An apparatus ( 110 ) includes an activation mechanism ( 20 ) and a safety latch ( 122 ). The activation mechanism is operative to deploy a needle ( 116 ) to protrude out of a housing ( 112 ), the needle ( 116 ) having a longitudinal axis. The safety latch ( 122 ) is movably mounted on the housing ( 112 ) and formed with a needle opening ( 129 ) to allow the needle ( 116 ) to pass therethrough. The safety latch ( 122 ) has a first position wherein the needle ( 116 ) is aligned to pass through the needle opening ( 129 ) and a second position wherein the safety latch ( 122 ) is moved with respect to the housing ( 112 ) such that the needle ( 116 ) is blocked from movement in a direction parallel to the longitudinal axis thereof by a portion of the safety latch ( 122 ) distanced from the needle opening ( 129 ).

First claim

I claim:

1. A drug delivery device for administering a medicament to a patient comprising:
a housing having an injection needle therein;
a needle insertion apparatus for ejecting at least a tip of the injection needle out of the housing;
a safety latch coupled to the housing and including a needle opening for advancement of at least the tip of the needle therethrough, the latch being movable from a first position prior to use of the drug delivery device to a second position when the drug delivery device is placed on the patient;
a safety latch position sensor configured to detect at least the second position of the safety latch; and
an electronic controller electronically coupled with the safety latch position sensor and configured to control operation of the needle insertion apparatus;
wherein with the housing in contact with the patient, and the safety latch in the second position, the safety latch position sensor electrically signals the electronic controller, which, in turn, initiates operation of the needle insertion apparatus.

2. The drug delivery device of claim 1 , wherein the needle insertion apparatus comprises a biasing device, biased to eject the injection needle, a biasing device arrestor blocking movement of the biasing device, and an actuator coupled with the biasing device arrestor and operatively controlled by the electronic controller, wherein the electronic controller initiates the operation of the actuator when the safety latch is in the second position, which withdraws the biasing device arrestor from blocking movement of the biasing device, and, in turn, permitting the biasing device to eject the injection needle.

3. The drug delivery device of claim 2 , wherein the electronic controller is configured to initiate the operation of the actuator after a predetermined time delay from receiving the signal from the safety latch position sensor that the safety latch is in the second position.

4. The drug delivery device of claim 3 , wherein the predetermined time delay ranges between 5 seconds to 15 seconds.

5. The drug delivery device of claim 1 , wherein the safety latch position sensor is a reed switch.

Assignees

• Medimop Medical Projects Ltd
• Medimop Projects Ltd

Inventors

• Cabiri Oz

Classifications

• A61M2005/14252

  with needle insertion means · CPC title

• A61M5/3204

  Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices · CPC title

• A61M5/2033 Primary

  Spring-loaded one-shot injectors with or without automatic needle insertion (multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287) · CPC title

• A61M5/14248 Primary

  of the skin patch type · CPC title

• A61M5/142

  Pressure infusion, e.g. using pumps · CPC title