| http://www.w3.org/ns/prov#value | - ot and spread to receive and retain said flat head in the slot until the sliding pusher member is actuated to drive the needle, and the sliding pusher member being operative when actuated to drive the needle out of the bore into the tissue of the patient; actuating means carried by the body and including a compression spring in said enlarged zone of the bore and engaging the enlarged end of the sl
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