| CPC A61B 17/0218 (2013.01) [A61B 90/08 (2016.02); A61B 2017/0034 (2013.01); A61B 2017/00367 (2013.01); A61B 2017/00407 (2013.01); A61B 2017/0042 (2013.01); A61B 2017/0046 (2013.01); A61B 2017/0225 (2013.01); A61B 2017/3454 (2013.01)] | 20 Claims | 

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               1. A channel device for surgery, comprising: 
            a retractor, wherein the retractor comprises a metal net configured to form a surgical channel; 
                a conveyor, wherein a distal end of the conveyor has an openable channel configured for the metal net to be placed; and 
                a binding cord and a binding wire, wherein the binding cord is configured to be wound around the metal net, and the binding wire is configured to pass through the binding cord and tighten up the binding cord, so as to compress the metal net, or the binding wire is configured to be pulled away from the binding cord, so as to loosen the binding cord and the metal net. 
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