MEDICAMENT DELIVERY DEVICE

• Main Authors: STEPHAN OLSON, LENNART BRUNNBERG
• Format: Patent
• Language: English; Japanese
• Published: 20.04.2017
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

PROBLEM TO BE SOLVED: To provide an accurate and reliable automatic medicament delivery device providing a complete delivery of medicament followed by a reliable audible and/or tactile and/or visible confirmation to the user that the delivery has been completed.SOLUTION: A drive mechanism comprises a first resilient member 91 and a delay plunger rod assembly. The delay plunger rod assembly comprises a proximal plunger 96, a distal plunger 90, a chamber 95 formed between the proximal and distal plungers, an aperture, and delay means received in the chamber. The distal plunger is positioned and configured in relation to a hold and release mechanism such that, as the drive mechanism exerts a pressure on the medicament container 80, the distal plunger acts against the delay device, delaying a release of a signal generating member 110 after a release of the drive mechanism to allow the remaining content of medicament in the medicament container to be completely expelled before the signal generating member is released.SELECTED DRAWING: Figure 7 【課題】薬剤を完全に送達し、それに続いて送達が完了したことを確実に可聴的におよび／または触知可能におよび／または可視的にユーザに確認させる、正確で信頼性のある自動薬剤送達装置を提供する。【解決手段】駆動機構は、第１の弾性部材９１と、遅延プランジャロッドアセンブリとを備え、遅延プランジャロッドアセンブリは、近位プランジャ９６と、遠位プランジャ９０と、近位プランジャと遠位プランジャとの間に形成されたチャンバ９５と、アパーチャと、チャンバ内に収容された遅延手段とを備え、駆動機構が薬剤容器８０に対して圧力をかけると、遠位プランジャが遅延手段に対して作用し、それによって、駆動機構の解放後に信号発生部材１１０の解放が遅延されて、信号発生部材が解放される前に薬剤容器内の残りの量の薬剤を完全に放出することができるように、遠位プランジャは、保持・解放機構に対して位置決めされるとともに構成される。【選択図】図７