Abstract: An ultrasonic biopsy needle includes a sheath inserted through a channel of an ultrasonic endoscope; a needle tube which is inserted through the sheath and capable of advancing and retracting inside the sheath; and an operation portion which is connected to a proximal end of the sheath and is provided to advance and retract. The sheath includes an extension limiting portion that is positioned more distal than a proximal end of a bending portion of the ultrasonic endoscope. The extension limiting portion is formed of a metal coil, the ratio of the inner diameter of the channel to the outer diameter of the coil is in a range from 1.0:0.84 to 1.0:0.96, the initial tension of the coil is equal to or greater than 2.0 [N] or greater, and extension of the sheath caused by the forward and backward movement of the needle tube is limited.

Abstract: An ultrasonic biopsy needle includes a sheath inserted through a channel of an ultrasonic endoscope; a needle tube which is inserted through the sheath and capable of advancing and retracting in the sheath; and an operation portion which is connected to a proximal end of the sheath and is provided to advance and retract the needle tube. The sheath includes a meandering suppressing portion positioned more proximal than a proximal end of a bending portion of the ultrasonic endoscope when a distal end of the sheath is positioned in a visual field of an optical image-capturing mechanism of the ultrasonic endoscope. The meandering suppressing portion is formed of a metal coil, the ratio of the inner diameter of the channel to the outer diameter of the coil is in a range from 1.0:0.66 to 1.0:0.84, and the initial tension of the coil is equal to or greater than 5.0 [N].

Abstract: A syringe holder which is capable of holding a plurality of types of syringes used for expanding a balloon catheter so as to be capable of being detached and attached is proposed. Preferably, a clearance is provided between the syringe holder and the syringe, so that gas can come into sufficient contact therewith during sterilizing treatment. The syringe holder in this arrangement can be formed, for example, by forming a plurality of grooves which are similar to the shape of the syringe and slightly larger than the syringe on a sheet formed of resilient member. Preferably, the shape is devised to prevent dropping off of the syringe from the syringe holder.

Abstract: The balloon catheter according to the present invention is one is provided with a catheter shaft having flexibility with a lumen formed inside; a balloon that is disposed at the distal end side of the catheter shaft and in communication with the lumen; a fluid regulating portion that passes a fluid that is supplied from a fluid supply source to the balloon and, simultaneous with the supply from the fluid supply source being stopped, prevents backflow of the fluid that is supplied to the balloon to the fluid supply source side; and a fluid releasing portion that releases the fluid that is supplied to the balloon to outside of the balloon.

Abstract: A syringe holder which is capable of holding a plurality of types of syringes used for expanding a balloon catheter so as to be capable of being detached and attached is proposed. Preferably, a clearance is provided between the syringe holder and the syringe, so that gas can come into sufficient contact therewith during sterilizing treatment. The syringe holder in this arrangement can be formed, for example, by forming a plurality of grooves which are similar to the shape of the syringe and slightly larger than the syringe on a sheet formed of resilient member. Preferably, the shape is devised to prevent dropping off of the syringe from the syringe holder.

Abstract: A syringe holder which is capable of holding a plurality of types of syringes used for expanding a balloon catheter so as to be capable of being detached and attached is proposed. Preferably, a clearance is provided between the syringe holder and the syringe, so that gas can come into sufficient contact therewith during sterilizing treatment. The syringe holder in this arrangement can be formed, for example, by forming a plurality of grooves which are similar to the shape of the syringe and slightly larger than the syringe on a sheet formed of resilient member. Preferably, the shape is devised to prevent dropping off of the syringe from the syringe holder.

Abstract: The balloon catheter according to the present invention is one is provided with a catheter shaft having flexibility with a lumen formed inside; a balloon that is disposed at the distal end side of the catheter shaft and in communication with the lumen; a fluid regulating portion that passes a fluid that is supplied from a fluid supply source to the balloon and, simultaneous with the supply from the fluid supply source being stopped, prevents backflow of the fluid that is supplied to the balloon to the fluid supply source side; and a fluid releasing portion that releases the fluid that is supplied to the balloon to outside of the balloon.

Abstract: A syringe holder which is capable of holding a plurality of types of syringes used for expanding a balloon catheter so as to be capable of being detached and attached is proposed. Preferably, a clearance is provided between the syringe holder and the syringe, so that gas can come into sufficient contact therewith during sterilizing treatment. The syringe holder in this arrangement can be formed, for example, by forming a plurality of grooves which are similar to the shape of the syringe and slightly larger than the syringe on a sheet formed of resilient member. Preferably, the shape is devised to prevent dropping off of the syringe from the syringe holder.

Abstract: A syringe holder which is capable of holding a plurality of types of syringes used for expanding a balloon catheter so as to be capable of being detached and attached. Preferably, a clearance is provided between the syringe holder and the syringe, so that gas can adequately contact syringes during a sterilizing treatment. The syringe holder is formed, for example, by forming a plurality of grooves which are similar to the shape of the syringe and slightly larger than the syringe on a sheet formed of resilient material. Preferably, the shape is formed to prevent dropping off of the syringe from the syringe holder.

Abstract: A pair of biopsy cups are provided at a forward-end treatment part of biopsy forceps for an endoscope that are a treatment tool for the endoscope. The pair of biopsy cups are pivoted, by a pin, on a sleeve which is connected to a forward end of a sheath. The pair of biopsy cups are arranged such that cup-shaped forward ends thereof are capable of being opened and closed around the pin. Two through bores are formed in one of the biopsy cups of the forward-end treatment part. One of the through bores is positioned rearwardly more than the other through bore with respect to a major-axis direction. A guide wire for guiding a body of the biopsy forceps for the endoscope is inserted into and passes through the two through bores in a retractable manner.