Pneumatic dilator for achalasia.
Kravetz
Robert E
RE
Archives Committee, American College of Gastroenterology, USA.
D000388:Air; D004106:Dilatation / Q000266:history* / Q000295:instrumentation; D004867:Equipment Design; D004931:Esophageal Achalasia / Q000266:history* / Q000628:therapy; D049670:History, 17th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans