A cavity retaining tool for bone surgery, a cavity retaining tool for general surgery, an endoscopic surgery system involving the use of a cavity retaining tool

摘要

The cavity-retaining tool for bone surgery of this invention comprises: a cavity-retaining sheath (1) which is inserted into the body and forms a cavity to act as a work space for bone surgery; a treatment channel (11) which is placed in the cavity-retaining sheath (1), and guides treatment tools necessary for the treatment of a bone into the space for bone surgery; an observation tool which is attached to the cavity-retaining sheath (1), and by which to observe the operation field within the space for bone surgery; and a fitting means (5, 21) which is placed at the tip of the cavity-retaining sheath (1), and fits the tip of the cavity-retaining sheath (1) to a bone. As an extension, the cavity-retaining tool for surgery comprises: a cavity-retaining tool to retain a cavity for surgery works in the body; and a soft cylinder member which communicates with the cavity retained by the cavity-retaining means and interconnects the cavity with the space outside the body. As a further extension, the endoscopic surgery system involving the use of the cavity-retaining tool comprises: a cavity-retaining tool to retain a cavity in body tissues; and at least a port which is led to the cavity, and allows the port and the cavity to communicate in the body.