| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost, single-use injection device for dispensing a medicament.SOLUTION: The injection device includes: a safety shield 304 with a surface for contacting a patient's skin; an inner housing 312 with cam tracks; a needle hub 320 slidably connected to the internal housing and movable from a first position to a second position; a double-ended needle 324 affixed to the needle hub; a medicament container 308 slidably connected to the safety shield; a stopper 332 slidably disposed in the medicament container; a biasing member 328 disposed within the safety shield; and a needle shield 316 selectively covering a first end of the needle, the needle shield having at least one cam tab slidably engaged with a cam track, and displacement of the cam tab 348 along the first part of the cam track displaces the needle hub to a second position and causes the needle to pierce the stopper. |
