Abstract: An insertion method includes: specifying a part of a mucous membrane which lies between a nasal cavity and a maxillary sinus and which is located in a space surrounded by an inferior nasal concha, a lacrimal bone, an ethmoid bone, and a palatine bone, as an opening formation position where an opening connected to the maxillary sinus is formed; forming the opening at the opening formation position; and inserting a medical device into the maxillary sinus through the formed opening.

Abstract: An ankle arthrodesis of this embodiment performs a cartilage the ultrasonic treatment procedure using an ultrasonic treatment tool. As one condition, when wear of cartilage has attained to the whole of an ankle, it carries out. A method for ankle arthrodesis is disposal which excises the cracked organization which exists in an ankle using the ultrasonic treatment tool, and fixes a tibia and a talus under it with a screw.

Abstract: An endoscopic treatment instrument includes a guide sheath. The guide sheath includes a second distal end, which has an inside diameter to insert the insertion portion therethrough so that the distal end of the insertion portion is configured to protrude relative to the second distal end. The guide sheath is inserted through the guide pipe so that the second distal end is configured to protrude relative to the first distal end of the guide pipe.

Abstract: A surgical procedure of preparing bone holes to fix an implanted tendon to a femur when performing reconstruction of a ligament in a knee joint, includes: bringing a treatment portion of an ultrasonic treatment instrument into contact with the femur in the knee joint, and applying ultrasonic vibration from the treatment portion to the femur, thereby cutting and forming a first bone hole from the inside of the knee joint to the femur in a predetermined depth.

Abstract: A tissue ligating device for ligating a tissue includes a suture having an elastic restoring force, and a hook-shaped member including a groove portion, connected to a first end of the suture, and disposed in a direction along a derivation direction of the suture and in a direction opposite to the derivation direction of the suture with respect to the first end of the suture.

Abstract: An insertion method includes: specifying a part of a mucous membrane which lies between a nasal cavity and a maxillary sinus and which is located in a space surrounded by an inferior nasal concha, a lacrimal bone, an ethmoid bone, and a palatine bone, as an opening formation position where an opening connected to the maxillary sinus is formed; forming the opening at the opening formation position; and inserting a medical device into the maxillary sinus through the formed opening.

Abstract: A treatment method includes: inserting a treatment member into a maxillary sinus through a first opening in a nasal cavity leading to the maxillary sinus; inserting an endoscope into the maxillary sinus through a second opening leading to the maxillary sinus and different from the first opening; and performing a treatment on a treatment target site in the maxillary sinus while the treatment member and the treatment target site exist within a visual field of the endoscope.

Abstract: Provided is a tissue ligation device for ligating tissues. The tissue ligation device includes a suture thread, and a hook-like member having a connecting portion connected to a suture thread-side of the connecting portion of the suture thread and a groove whose inner wall has a locking surface disposed so as to face the suture thread-side connecting portion and allowed to be brought into contact with the suture thread.

Abstract: A tissue ligating device to which a suture is attached and which ligates a tissue includes a suture fix member which is attached to the suture, and which includes a housing part which one part of the suture can be hooked; and a hooked suture locking part configured to prevent the suture hooked in the housing part from disengaging from the housing part.

Abstract: A needle for an endoscope, includes: an outer sheath tube having a fluid passage provided therein; a distal end discharging portion that is accommodated in the distal end of the outer sheath tube so as to be extended therefrom and retracted thereinto, and is connected to the distal end of the fluid passage; an operating device for operating the distal end discharging portion so as to be extended from the distal end of the outer sheath tube and retracted thereinto; a fluid supplying device, that is provided in the outer sheath tube and is caused to communicate with the fluid passage, and supplies a fluid to the distal end discharging portion through the fluid passage; and a blocking device that is provided in the fluid passage, for freely opening and shutting off circulation of a fluid in line with an operation of the operating device.

Abstract: A stent system 1 has a stent 2 having a hole and at least an anchor 3 having an arm 33. The stent 2 has a cylindrical shape, in which a sheet is rolled, and a plurality of holes 13 are provided thereon. A grasping portion 33A at the distal end of the arm 33 of the anchor 3 can be inserted into the holes 13. A grasping force X of the grip 3 is greater than a drag R that the holes of the stent 2 yield. The grip 3 deforms the stent 2, easily grasps the stent 2 and a biological tissue, whereby it is possible to fix the stent 2. In accordance with the present invention, it is possible to reliably fix the stent in a hollow organ.

Abstract: A tissue ligating device for ligating a tissue includes a suture having an elastic restoring force, and a hook-shaped member including a groove portion, connected to a first end of the suture, and disposed in a direction along a derivation direction of the suture and in a direction opposite to the derivation direction of the suture with respect to the first end of the suture.

Abstract: Provided is a tissue ligation device for ligating tissues. The tissue ligation device includes a suture thread, and a hook-like member having a connecting portion connected to a suture thread-side of the connecting portion of the suture thread and a groove whose inner wall has a locking surface disposed so as to face the suture thread-side connecting portion and allowed to be brought into contact with the suture thread.

Abstract: An endo-therapy product system includes an introduction device led into a body cavity, a treatment device and a cartridge. The cartridge includes a treatment device accommodating portion in which the treatment device is accommodated. The treatment device accommodating portion includes a coupling member accommodating portion which accommodates a coupling member of the treatment device and a treatment device main body accommodating portion which accommodates a treatment device main body. The coupling member accommodating portion prevents a connecting portion of the introduction device from being engaged with an engagement portion at a proximal end of the coupling member.

Abstract: A tissue ligating device to which a suture is attached and which ligates a tissue includes a suture fix member which is attached to the suture, and which includes a housing part which one part of the suture can be hooked; and a hooked suture locking part configured to prevent the suture hooked in the housing part from disengaging from the housing part.

Abstract: An injection needle apparatus in which an operation for relatively moving an outer tube 4 and an inner tube 5 is performed to project and retract a needle body 12 from and into a distal end of the outer tube 4, and to carry out a movement of rotation of the needle body 12 at a predetermined angle by relative forward and backward movements of the outer tube 4 and inner tube 5 in their longitudinal directions every time the forward and backward movement operations is repeated, thereby enabling changing a direction of a needlepoint 14 of the needle body 12 at each angle.

Abstract: An injection needle apparatus in which an operation for relatively moving an outer tube 4 and an inner tube 5 is performed to project and retract a needle body 12 from and into a distal end of the outer tube 4, and to carry out a movement of rotation of the needle body 12 at a predetermined angle by relative forward and backward movements of the outer tube 4 and inner tube 5 in their longitudinal directions every time the forward and backward movement operations is repeated, thereby enabling changing a direction of a needlepoint 14 of the needle body 12 at each angle.

Abstract: A stent system 1 has a stent 2 having a hole and at least an anchor 3 having an arm 33. The stent 2 has a cylindrical shape, in which a sheet is rolled, and a plurality of holes 13 are provided thereon. A grasping portion 33A at the distal end of the arm 33 of the anchor 3 can be inserted into the holes 13. A grasping force X of the grip 3 is greater than a drag R that the holes of the stent 2 yield. The grip 3 deforms the stent 2, easily grasps the stent 2 and a biological tissue, whereby it is possible to fix the stent 2. In accordance with the present invention, it is possible to reliably fix the stent in a hollow organ.

Abstract: An endo-therapy product system includes an introduction device led into a body cavity, a treatment device and a cartridge. The cartridge includes a treatment-device-accommodating portion in which the treatment device is accommodated. The treatment-device-accommodating portion includes a coupling-member-accommodating portion which accommodates a coupling member of the treatment device and a treatment-device-main-body-accommodating portion which accommodates a treatment-device-main-body. The coupling-member-accommodating portion prevents a connecting portion of the introduction device from being engaged with an engagement portion at a proximal end of the coupling member.

Abstract: A needle for an endoscope, includes: an outer sheath tube having a fluid passage provided therein; a distal end discharging portion that is accommodated in the distal end of the outer sheath tube so as to be extended therefrom and retracted thereinto, and is connected to the distal end of the fluid passage; an operating device for operating the distal end discharging portion so as to be extended from the distal end of the outer sheath tube and retracted thereinto; a fluid supplying device, that is provided in the outer sheath tube and is caused to communicate with the fluid passage, and supplies a fluid to the distal end discharging portion through the fluid passage; and a blocking device that is provided in the fluid passage, for freely opening and shutting off circulation of a fluid in line with an operation of the operating device.