| 摘要 |
An applicator for controlling the insertion of a plurality of needles into a body of a patient is disclosed, comprising a needle housing 1 having a proximal region and a distal region, a needle holder 4 slideably disposed within the needle housing and configured to retain a plurality of needles 5a, 5b, 5c; wherein the plurality of needles are configured to transition between a retracted configuration wherein the needles are withdrawn within the needle housing and an extended configuration wherein the needles protrude from the distal region of the needle housing. The needle holder is preferably moved by a plunger 2, however alternatives include an electromagnet (12, see figure 1E), pneumatic or hydraulic pressure (see figure 1F) or slide grips (8, see figure 1D). An alignment device may be used with the applicator. The applicator may be connected to an afterloader and used to deliver a treatment including radiation. |
