Dr. Van Buren's rubber bag and stopcock for injecting hydrocele.
D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D008297:Male; D006848:Testicular Hydrocele / Q000266:history; D014481:United States; D014572:Urology / Q000266:history* / Q000295:instrumentation