Surgical system for stoma closure in biological duct

摘要

A surgical system for small-pit closure in hollow organs is provided. The surgical system is provided with a surgical device for small-pit closure in hollow organs, with the surgical device including the following components: a suture-member cartridge in which a pair of parallel tubular members that accommodate respective suture members are feedably connected to the rear ends of a pair of arrow-shaped members that latch into tissue in a hollow organ; an auxiliary shooting unit having plungers respectively provided in a pair of cylinders open at both ends; a hollow-organ-insertable unit configured of a pair of flexible air tubes; and a gas shooter that sequentially discharges compressed air or high-pressure gas into the open-ended cylinders in response to operations of a trigger, for sequentially ejecting the arrow-shaped members and driving the same into tissue in the hollow organ on both sides of a small pit site.

主权项

1. A surgical system having a surgical device for small-pit closure in hollow organs with said surgical device being a suturing device formed so as to be freely insertable through an operating channel of an endoscope inserted into a hollow organ so as to suture, through the operating channel, tissue at the site of a small pit in the hollow organ by using a suture member that includes (a) at least one pair of first and second arrow-shaped members having engaging parts that engage with tissue in the hollow organ, and (b) a suture thread that is attached by one of its ends (first end) to the rear end of the first arrow-shaped member and that is inserted into and pulled freely through the rear end of the second arrow-shaped member, with said surgical device comprising:
(1) a suture-member cartridge constituting a leading-end portion of the surgical device and having at least one pair of tubes arranged parallel to each other, whereby the suture thread is diverted around leading ends of the tubes or passed through small holes or slit-like openings provided in opposing side walls of the tubes and is fixed by an opposite (second) end of the suture thread to an inner surface on the leading end side of a tube member that accommodates the second arrow-shaped member, with the arrow-shaped member linked by the suture thread forming a pair that are respectively accommodated in the tubes; (2) a hollow-organ-insertable unit that includes flexible air tubes that are coupled to a rear end of the suture-member cartridge; and (3) a gas shooter that is coupled to a rear end of the hollow-organ-insertable unit outside the hollow organ and that includes a cylinder unit that has (a) a piston that, through its operation, generates compressed air, and (b) a high-pressure-gas reservoir that stores high-pressure gas, with said compressed air or high-pressure gas being released through an ejection hole in response to trigger operations of the gas shooter and sequentially ejected into the suture-member cartridge via the hollow-organ-insertable unit; and the arrow-shaped members are sequentially ejected from the suture-member cartridge by compressed air or high-pressure gas sequentially ejected into the suture-member cartridge and are driven into tissue in the hollow organ on both sides of the small-pit site, with the rear ends of the arrow-shaped members being drawn together via the suture thread linking those rear ends so as to tightly suture the small-pit site.