SURGICAL CIRCULAR STAPLER INDICATION SYSTEM AND SURGICAL CIRCULAR STAPLER Russian patent published in 2020 - IPC A61B17/68 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to a display system for a surgical ring stapler used in surgical anastomosis, particularly for intestinal wall connections. Surgical ring stapler indication system for connecting tissue fragments consists of an indicator, axial shaft of indicator located in housing, tensioning system, guide screw, indicator spring and adjusting head. Tensioning system comprises needle, tensioner, bolt and support mechanism. Indicator is made in the form of a semi-bushing with attached fastening mechanism and indication mechanism and is installed with possibility of sliding turn on axial shaft of indicator due to rotation of adjusting head and, therefore, tension system, which causes approximation of anvil to nozzle. Guide screw on the remote section has a projection forming the striker pin, and after the gap between the anvil and nozzle reaches 1 mm, striker pin presses on upper surface of indicator, as a result of which indicator is translated into inclined position and shows value of 1 mm in window located on opposite side of hammer pin. Further movement of the striker pin is blocked by the upper surface of the indicator, hence further movement of the anvil is blocked. Surgical ring stapler for connecting tissue fragments has a composite connection unit, a handle, an indicator, an adjustment head, a striker system and the above mentioned indication system. Composite unit is located on the body and comprises a nozzle attached to the anvil by means of a tensioning system.

EFFECT: use of inventions makes it possible to prevent occurrence of technical defects of multiple mechanisms.

2 cl, 5 dwg