Improved double retractors / by Seth Scott Bishop.

  • Bishop, Seth Scott, 1852-1923.
Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: Improved double retractors / by Seth Scott Bishop. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    z Reprinted from I'lir Chicago Medicnl Recortlcr, May, 189;) IMPROVED DOUBLE RETRAC By SETH SCOTT BISHOP, M. D. PROPRSSOU OF DISKASEs'oF THE NOSE, THROAT ANU EAR IN THE CHICAGO SUMSIEK SCHOOI, OF MEDICINE; PROFESSOR IN I'HE POST-GRADUATE MEDICAL S(mOOL. These retractors are an improvement on those tliat I intro- (hiced at the San Francisco meeting of the American Medical Association. The}' are constructed on somewhat different princi- ples, and are cheaper to make, costing onlj' about one-half as much as the others. The hooks are separated with the same device that is used in the French mouth gags ; but I have discarded the spiral spring, since it is unnecessary, and simplicity and efficiency constitute the best tests of a perfect instrument. In operations, the retractor should be introduced into the incision with the hooks interlocked. They art; then separated by pressing the thumb and finger on the opposite ends of the sliding parallel bars next to the handles. When the lips of the wound have been forced as far apart as may be desired, the hooks will remain in that position after the pressure of the thumb and finger is discontinued. Thisef-fect is accomplished by means of a ratchet edge on one of the bars articulating with a corresponding incisor nn the shaft.