| 摘要 |
<p>A needleless syringe 1 comprises a hollow casing 2 having an outlet 4 and containing a first compartment 6 in which is located a fluid eg. helium capsule 8 and a second compartment 10 for a therapeutic agent. The compartments 6, 10 are separated by a partition 12 on which is mounted a needle 14 with a sharpened tip 16 which sits in a cavity 26 formed in the base 24 of the capsule 8. Activation of a fluid release mechanism 17 causes the capsule 8 to move towards the needle 14 which pierces the base 24 and releases the fluid from the capsule 8. <IMAGE></p> |
