Spring-actuated needleless injector

Details Spring-actuated needleless injector Spring-actuated needleless injector

A - Human Necessities

61

M

A61M 5/30 (2006.01) A61M 5/31 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2239515

A needleless injector for injecting medication through the skin of a patient includes a vial which holds a volume of liquid medication. The vial includes a vial piston which moves to force the liquid medication out of the vial. A power mechanism applies force to the vial piston. The power mechanism includes a power piston which has a plurality of ratchets. A spring is positioned to apply force to the power piston. A trigger engages the ratchets on the power piston to hold the power piston in place against the force applied by the spring. The trigger selectively releases the power piston so that the power piston moves in response to the force applied by the spring. The power piston applies the force to the vial piston to cause the vial piston to force the liquid medication out of the vial. A cocking mechanism applies force to the power piston to move the power piston against the force of the spring to engage the ratchets. A travel adjustment mechanism is moveable to position the spring within the power mechanism to control the movement of the power piston and to thereby control the volume of liquid ejected from the vial.

La présente invention concerne un injecteur hypodermique (100) sans aiguille servant à injecter un médicament à travers la peau d'un patient. Cet injecteur est pourvu d'un réservoir (102) qui renferme un volume de médication liquide. Un mécanisme à moteur applique une force au piston du réservoir.

Affiliated with

Also associated with

Rating

Spring-actuated needleless injector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spring-actuated needleless injector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spring-actuated needleless injector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1393549