Hinck, V C Spinal needle with depth guide: a new design for simplifying subarachnoid injections. [electronic resource] - AJR. American journal of roentgenology Aug 1976 - 354 p. digital Publication Type: Journal Article ISSN: 0361-803X Standard No.: 10.2214/ajr.127.2.354 doi Subjects--Topical Terms: Injections, Spinal--instrumentationNeedlesSpinal Puncture--instrumentation