SADOWSKI, PETER L.,LESCH, PAUL R., JR.,BREMSETH, DAVID
申请号：
CA2475573
公开号：
CA2475573C
申请日:
2003.02.11
申请国别(地区):
CA
年份:
2013
代理人:
摘要：
An injection device that comprises a chamber (36) configured for containing asubstance to be injected and a needle (48) operatively associated with thechamber (36) and having a length sufficient to deliver the substance to anintradermal injection site. A collar surrounds the needle (48), defining acollar cavity. The collar also has a peripheral forward skin-contactingsurface that surrounds and is radially spaced from the needle and injectionsite by an area that is sufficiently large to allow a patient's skin to moveinto the collar cavity to properly position the needle for intradermaldelivery of the substance to the injection site to allow spread of theinjected substance under the skin while inhibiting or preventing backpressurewithin the skin from forcing the substance out through the injection site.
