Method and devices for performing minimally invasive surgery

1. A method of performing surgery in a body cavity of a body, the body cavity being separated from a space outside the body by a body wall, the method comprising:

providing a first device comprising a first part and a second part;

making a first opening and a second opening into the body wall;

introducing the second part of the first device into the body cavity through the second opening;

receiving a shaft and a pushrod of the second part into a recess of a head piece of the first part; and

coupling the first part of the first device to the second part of the first device to assemble the first device after introducing the second part of the first device into the body cavity.

2. The method of claim 1 , further comprising passing the second part of the first device out of the body cavity through the first opening to the space outside of the body, wherein coupling the first part of the first device to the second part of the first device is performed outside of the body.

3. The method of claim 1 , further comprising securing a shaft clamp to the head piece to secure the shaft and the pushrod.

4. The method of claim 3 , further comprising threading a threaded fastener over the head piece and the shaft clamp.

5. The method of claim 3 , further comprising aligning the shaft clamp to a proximal end of the head piece with at least one clamp pin.

6. The method of claim 1 , wherein the first device is one of a suction device, electrocautery assembly, a canulator, a clip applier, a cutter, a grasper, an image recorder, an image viewer, a retractor, and a sealer.

7. The method of claim 1 , further comprising using the assembled first device to perform a surgical procedure within the body cavity.

8. The method of claim 1 , further comprising introducing a second device into the body cavity through the first opening.

9. A method of performing surgery in a body cavity of a body, the body cavity being separated from a space outside the body by a body wall, the method comprising:

providing a first device comprising a first part and a second part;

making a first opening and a second opening into the body wall;

introducing the second part of the first device into the body cavity through the second opening;

passing the second part of the first device out of the body cavity through the first opening to the space outside of the body; and

coupling the first part of the first device to the second part of the first device to assemble the first device outside of the body after introducing the second part of the first device into the body cavity.

10. The method of claim 9 , further comprising receiving a shaft and a pushrod of the second part into a recess of a head piece of the first part.

11. The method of claim 10 , further comprising securing a shaft clamp to the head piece to secure the shaft and the pushrod.

12. The method of claim 11 , further comprising threading a threaded fastener over the head piece and the shaft clamp.

13. The method of claim 11 , further comprising aligning the shaft clamp to a proximal end of the head piece with at least one clamp pin.

14. The method of claim 9 , wherein the first device is one of a suction device, electrocautery assembly, a canulator, a clip applier, a cutter, a grasper, an image recorder, an image viewer, a retractor, and a sealer.

15. The method of claim 9 , further comprising using the assembled first device to perform a surgical procedure within the body cavity.

16. The method of claim 9 , further comprising introducing a second device into the body cavity through the first opening.