Abstract: A valve seat member is provided with: a first seat arranged so as to be spaced apart from an opening of a port; a second seat connected to the first seat at both ends so as to surround the opening of the port; an island portion arranged on the first seat side of the opening of the port in a region surrounded by the first seat and the second seat such that a hollow space is formed between the island portion and the first seat; and a passage configured to extend through the island portion to allow communication between the port and the hollow space.

Abstract: A valve seat member is provided with: a first seat arranged so as to be spaced apart from an opening of a port; a second seat connected to the first seat at both ends so as to surround the opening of the port; an island portion arranged on the first seat side of the opening of the port in a region surrounded by the first seat and the second seat such that a hollow space is formed between the island portion and the first seat; and a passage configured to extend through the island portion to allow communication between the port and the hollow space.

Abstract: Providing an overturn preventing device which can easily determine whether or not the damper is properly mounted. The overturn preventing device is mounted between a top surface of a piece of furniture (an article) and a ceiling. The overturn preventing device includes a damper. The damper includes a cylinder, a rod, a piston and a rod cover. The cylinder encloses a hydraulic fluid (operating liquid) and a gas. The rod is reciprocably inserted into the cylinder. The piston is slidably housed in the cylinder. A proximal end of the rod is coupled to the piston. The rod cover has one of two ends coupled to a distal end side of the rod thereby to be reciprocable together with the rod. The opening side end of the rod cover is located on a side of the bottom side end of the cylinder relative to the opening side end of the cylinder when the piston is immersed in the operating liquid.

Abstract: Provided is a suturing apparatus for endoscope capable of suturing an opening of a wound, with an endoscope inserted into cavity of a digestive tract, to the same extent as the surgical operation. The suturing apparatus includes a front arm 11, a rear arm 12, arm moving means 13 for causing the front arm 11 and the rear arm 12 to move closer to or away from each other, and rocking means for relatively rocking the front arm 11 and the rear arm 12. The rear arm 12 includes a needle-like member 14 provided on a surface on a side of the front arm 11 so that an axial direction thereof becomes parallel with a direction in which the front arm 11 and the rear arm 12 are moved closer to or away from each other. The front arm 11 is provided with a housing space 16 capable of housing a tip of the needle-like member 14 when the front arm 11 and the rear arm 12 are moved closer to each other. Each of the housing spaces houses an engagement member 21 capable of being engaged with the needle-like member 14.

Abstract: Provided is a suturing apparatus for endoscope capable of suturing an opening of a wound, with an endoscope inserted into cavity of a digestive tract, to the same extent as the surgical operation. The suturing apparatus includes a front arm 11, a rear arm 12, arm moving means 13 for causing the front arm 11 and the rear arm 12 to move closer to or away from each other, and rocking means for relatively rocking the front arm 11 and the rear arm 12. The rear arm 12 includes a needle-like member 14 provided on a surface on a side of the front arm 11 so that an axial direction thereof becomes parallel with a direction in which the front arm 11 and the rear arm 12 are moved closer to or away from each other. The front arm 11 is provided with a housing space 16 capable of housing a tip of the needle-like member 14 when the front arm 11 and the rear arm 12 are moved closer to each other. Each of the housing spaces houses an engagement member 21 capable of being engaged with the needle-like member 14.