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This appliance consists of a base bar 2⅛ inches long, with cross-arms one inch in length, hinged at the center point of the bar and so arranged as to be forced down on the base by means of a spring causing pressure of about four pounds to the inch. When opened the clamp is cruciform, when the cross-arms are closed the clamp has a width of 3/8 inch and a thickness of 3/16 inch. Figure 1 shows the alternate arms partially closed.
The clamp is applied as follows: The surfaces to be approximated having been brought in apposition, the walls are punctured down to the mucous membrane (1/8 inch incision), the opened cross-arms are forced through mucous membrane into the lumen of the bowel and, with a flat probe or like instrument, used as a wedge, the cross-arms are spread and closed on the base bar, as a knife blade
SENN W. PRESSURE CLAMP FOR LATERAL ANASTOMOSIS.PRELIMINARY REPORT.. JAMA. 1907;XLVIII(16):1350. doi:10.1001/jama.1907.25220420042002d
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