In the present disclosure, a knob assembly used for a circular stapler is provided, the knob assembly is used for a circular stapler, a screw rod is provided in the stapler, and the knob assembly includes: a knob driver; a knob body sheathed outside the screw rod, wherein when the knob body rotates, the screw rod is driven to move along an axial direction of the stapler; a first cooperating component having a blocking state and an unblocking state, wherein the first cooperating component is an elastic cooperating component; a second cooperating component; wherein when the first cooperating component is in the blocking state, the first cooperating component and the second cooperating component are fixedly linked with each other, when the first cooperating component is in the receding state , the first cooperating component and the second cooperating component are not fixedly linked with each other; wherein the first cooperating component is provided at the knob driver, and the second cooperating component is provided at the knob body; or the first cooperating component is provided at the knob body, and the second cooperating component is provided at the knob driver. http://prntscr.com/15aje7u

when the first cooperating component is in the receding state , the first cooperating component and the second cooperating component are not fixedly linked with each other

когда первый компонент отведён (в отведённом, вытянутом, извлечённом состоянии), оба компонента больше не связаны друг с другом (или не входят в зацепление).