Patent ID: 8640940
Filing Date: 2014-02-04
Classification: A61B

Abstract:
1. A system for use in Natural Orifice Transluminal Endoscopic Surgery, with said system including a circular anastomotic surgical stapler that comprises: an anvil assembly that has an anvil shaft from which a trocar protrudes rearward along a main axis or X-axis at the rear end of the anvil assembly so that the anvil assembly is used as the front end of the circular anastomotic surgical stapler; an insertion body that is positioned opposite to the anvil assembly and that includes (1) a head assembly that has (a) a circular cutter or annular blade for cutting off, in the cylindrical direction, a specified section of a hollow or tubular organ, and (b) one or more annular rows of anastomotic staples for use in circular anastomosis of two cut-end sections of a remainder of the hollow organ, and (2) a long, flexible support shaft that is connected to the head assembly; an operating assembly that is connected to the insertion body and that controls the driving of the circular cutter or annular blade and the anastomotic staples; a thin guide wire that is inserted via the insertion body and that is connected to an acute or rear end of the trocar so as to be capable of being taken up and released; and a coupling or engaging mechanism that includes a locked portion and a locking portion that are engageable with each other, with the locked portion provided at the anvil shaft and the locking portion provided at a main axis of the head assembly, and that releasably mounts the anvil assembly to the head assembly, with the insertion body to which the anvil assembly is connected being inserted into a diseased or defective hollow organ via a natural orifice of a living body; said anvil assembly is detached or removed from the head assembly and is temporarily left at the front-end section of the diseased or defective site of the hollow organ, and a head-assembly-side insertion body retracts to a rear-end section of the diseased or defective site, so as to create a space between the anvil assembly and the head assembly of the insertion body; after said space has been created between the anvil assembly and the head assembly of the insertion body, there is inserted into the body—via an endoscopic hole to near the diseased or defective site of the hollow organ, a linear cutting/stapling device or linear stapler that has one or more linear cutters that have a noninterference concave notched structure and that are used to cut off, straight in a transverse direction, only a specified section of the hollow organ without cutting off said thin guide wire, and one or more linear rows of suture staples that are used to staple the respective cut-end sections of the remainder of the hollow organ straight in the transverse direction; said diseased or defective site of the hollow organ is cut off straight in the transverse direction and removed from the remainder of the hollow organ, and the respective cut-end sections of the remainder of the hollow organ are at the same time closed by purse-string-like linear-stapling suturing straight in the transverse direction by a procedure outside the hollow organ by using the linear stapler; and then the circular anastomotic surgical stapler performs circular anastomosis of the two cut-end sections of the remainder of the hollow organ, and at the same time cuts off, by a procedure inside the hollow organ, the two cut-end sections that had been closed by purse-string-like linear-stapling suturing of the remainder of the hollow organ, so that the sections are again interconnected; the thin wire guide is an electric guide wire consisting of an electric conductor, with the front end of the electric guide wire being connected to the acute or rear end of the trocar via a monopolar electrode, with the trocar either consisting of an insulator or being releasably connected to the rear end of the anvil shaft via an insulator, and with respective purse-string-like linear-stapling suturing sites of the remainder of the hollow organ on the anvil-assembly side and the head-assembly side being (1) cauterized successively by conducting a monopolar current to the monopolar electrode via the electric guide wire that has been taken up, and (2) inserted by the trocar via both of said suturing sites so that said suturing sites will be opened.