Abstract: In a stent, a second distance, which is a separation distance in the circumferential direction between an end point in the longitudinal direction of a second bent portion connected to an end portion on one end side of a second linear portion and an end point in the longitudinal direction of the second bent portion connected to a portion on the other end side of the second linear portion, is longer than a first distance, which is a separation distance in the circumferential direction between an end point in the longitudinal direction of a first bent portion connected to an end portion on one end side of any of first linear portions and an end point in the longitudinal direction of the first bent portion or the second bent portion connected to an end portion on the other end side of the first linear portion.

Abstract: A medical device system includes a medical device that is configured to be delivered to a lesion area in a body lumen, a guide wire that is configured to guide the medical device, a port member that is configured to introduce the guide wire and the medical device into a living body, a proximal-end fixing member that is configured to fix the guide wire and the port member and is provided with an operation unit that is configured to cause the guide wire to move in an insertion/pulling-out direction from the fixed state, an anchor device provided with an anchor portion in a distal portion thereof, and an anchor-device guide wire that is configured to guide the anchor device.

Abstract: A medical device system includes a medical device that is configured to be delivered to a lesion area in a body lumen, a guide wire that is configured to guide the medical device, a port member that is configured to introduce the guide wire and the medical device into a living body, a proximal-end fixing member that is configured to fix the guide wire and the port member and is provided with an operation unit that is configured to cause the guide wire to move in an insertion/pulling-out direction from the fixed state, an anchor device provided with an anchor portion in a distal portion thereof, and an anchor-device guide wire that is configured to guide the anchor device

Abstract: A medical-device position adjusting method includes inserting a guide wire farther forward than a lesion area of the body lumen from the port member; inserting an anchor device into the body lumen and fixing the guide wire to an inner wall surface of the body lumen by the anchor portion at a position farther forward than the lesion area; inserting the medical device from the port member along the guide wire to a position of the lesion area; and fixing the guide wire and the port member with the proximal-end fixing member, causing the guide wire to move in an insertion/pulling-out direction through the operation unit so as to change a path of the guide wire in the body lumen, and adjusting a position of the medical device in the lesion area.

Abstract: Provided is an arthritis treatment method and an arthritis treatment system which can be effective for the short-term attainment of a pain relief effect. An arthritis treatment method includes an instrument introducing step of causing at least one instrument having a tubular shape to communicate with a lesion area in which crystal-induced arthritis occurs, and a treatment step of removing a causative agent of the crystal-induced arthritis from the lesion area by perfusion and discharge of a lavage fluid through the instrument.

Abstract: A medical-device position adjusting method includes inserting a guide wire farther forward than a lesion area of the body lumen from the port member; inserting an anchor device into the body lumen and fixing the guide wire to an inner wall surface of the body lumen by the anchor portion at a position farther forward than the lesion area; inserting the medical device from the port member along the guide wire to a position of the lesion area; and fixing the guide wire and the port member with the proximal-end fixing member, causing the guide wire to move in an insertion/pulling-out direction through the operation unit so as to change a path of the guide wire in the body lumen, and adjusting a position of the medical device in the lesion area.

Abstract: Provided is an arthritis treatment method and an arthritis treatment system which can be effective for the short-term attainment of a pain relief effect. An arthritis treatment method includes an instrument introducing step of causing at least one instrument having a tubular shape to communicate with a lesion area in which crystal-induced arthritis occurs, and a treatment step of removing a causative agent of the crystal-induced arthritis from the lesion area by perfusion and discharge of a lavage fluid through the instrument.