Cautery

1. A cautery comprising:

a body, said body comprising an electric coagulation head having a first end and second end, a switch unit having a top end and a bottom end, and a power supply;

a replaceable cutter head detachably connected to the first end of electric coagulation head;

a heating wire is arranged on the replaceable cutter head;

a conduction band extending between the electric coagulation head and the power supply;

wherein the second end of the electric coagulation head is connected with the top end of the switch unit;

wherein the bottom end of the switch unit is connected with the power supply;

wherein the second end of the electric coagulation head is connected with the power supply through the switch unit;

wherein the switch unit further comprises a button, the button configured to control the connection and disconnection between the power supply and the electric coagulation head;

wherein conduction band is connected with the electric coagulation head by the button; and

wherein the button is an inner concave structure with respect to the body.

2. The cautery as disclosed in claim 1 , wherein a connector is configured on the replaceable cutter head, a jack which is fitted to the connector is configured on the other end of the electric coagulation head, the replaceable cutter head is detachably connected with the electric coagulation head by the matching between the connector and the jack.

3. The cautery as disclosed in claim 2 , wherein the body comprises a main post and one or more batteries configured in serial in the main post.

4. The cautery as disclosed in claim 3 , wherein one end of the main post is connected with the electric coagulation head, a rear cover is configured on the other end of the main post, the rear cover is connected with the main post by threads.

5. The cautery as disclosed in claim 4 , wherein one end of the one or more batteries configured in serial in the main post is connected with the electric coagulation head, the other end of the one or more batteries configured in serial is connected with the rear cover.

6. The cautery as disclosed in claim 5 , wherein a groove is configured on the main post, the button is configured in the groove of the main post, a switch fulcrum is configured in the groove of the main post, a button fulcrum, which is fitted to the switch fulcrum, is configured on one end of the button, the other end of the conduction band passes through and is configured between the button fulcrum and the switch fulcrum, a switch clip is configured on the other end of the button.

7. The cautery as disclosed in claim 6 , wherein an elastic element is configured between the other end of the batteries and the rear cover, the other end of the batteries is connected with one end of the conduction band by the elastic element and the rear cover.

8. The cautery as disclosed in claim 7 , wherein the main post is connected with the rear cover by the thread, a rabbet is configured on the thread connected between the main post and the rear cover, a bulge, which is fitted to the rabbet, is configured on the conduction band, the conduction band is configured between the main post and the rear cover by the matching between the bulge and the rabbet, the conduction band is connected with the rear cover.

9. The cautery as disclosed in claim 8 , further comprises an illuminating device, the illuminating device is configured on the electric coagulation head, and the illuminating device is connected with the power supply by the switch unit.