ASAHI INTECC CO., LTD.

A medical device includes an endoscope and an endoscopic treatment instrument. An insertion portion of the endoscope includes a treatment instrument lumen and a curved part. The endoscopic treatment instrument includes a tube including a knife wire lumen, a knife wire housed in the knife wire lumen, and a support member. The knife wire includes a first wire part including an exposed part, and a second wire part. In a state in which the endoscopic treatment instrument is inserted into the treatment instrument lumen and a portion of the knife wire that extends a predetermined distance from a position of a distal end of the exposed part exposed from the tube to a proximal end side is projected from an opening in the insertion portion, a distal end of the second wire part is located distally relative to a proximal end of the curved part.

A medical device includes a reinforcing member braided into a tubular shape using a wire and an inner layer disposed so as to be in contact with the radially inner side of the reinforcing member. A lumen is formed on the radially inner side of the inner layer. The inner layer includes a first region formed of a first material, and a second region, provided in a portion other than the first region, having an inner peripheral surface with a sliding resistance greater than that of the inner peripheral surface of the first region, and formed of a second material different from the first material.

A medical device includes an elongated main body part and a leading portion connected to a distal end of the main body part. The leading portion has a first end portion located outward of an outer peripheral surface of the main body part.

A medical device includes a first proximal end side tube that has a first bending rigidity and forms a part of a first lumen, a first distal end side tube that has a second bending rigidity lower than the first bending rigidity and forms a part of the first lumen, a second proximal end side tube that has a third bending rigidity and forms a part of the second lumen, and a second distal end side tube that has a fourth bending rigidity lower than the third bending rigidity and forms a part of the second lumen, and a distal end position of the second proximal end side tube is located closer to the distal end side than a distal end position of the first proximal end side tube in a longitudinal direction of the medical device.

This medical device comprises: a first tube having a first lumen and a second tube having a second lumen. An outer peripheral surface of the first tube and an outer peripheral surface of the second tube are joined, and in a transverse cross-section at a predetermined position in a longitudinal direction of the medical device, a first area enclosed by an outer periphery of the medical device is less than or equal to a second area enclosed by both a single common external tangent line of the first tube and the second tube, and a contour line formed by an outer periphery of the first tube and the second tube.

A medical device includes a first tube, a second tube, a heat-shrinkable tube that bundles the first tube and the second tube, and a third tube in contact with an outer peripheral surface of the heat-shrinkable tube.

Embodiments of the present disclosure relate to a hollow needle configured to form a void in a membrane. An example hollow needle includes a tube body that extends along a tube axis between a first end and a second end, wherein the first end defines a tip of the tube body; and a hollow portion surrounded by the tube body, wherein the hollow portion comprises an opening in the tip. The tube body may comprise: a sharp portion provided at the tip; and a suction void connected to the hollow portion that may be fluidly connected to a suction device, wherein the hollow portion is configured to cause a negative pressure applied to the suction void to be applied through the opening. The application of the negative pressure through the opening may pull the membrane against the tip to cause the sharp portion to pierce the membrane.

This catheter includes an outer layer formed of a resin, and an inner member covered with the outer layer. The distal end of the inner member is located proximally of the distal end of the outer layer. The outer layer has a first region extending from the distal end of the outer layer to the distal end of the inner member, and a second region which is positioned proximally of the first region and covers the inner member. The resin which forms the second region of the outer layer has a lower hardness than the resin which forms the first region.

A guide wire includes a core shaft and a cylindrical body that surrounds an outer periphery of a distal end side portion of the core shaft. The cylindrical body includes a first cylindrical portion and a second cylindrical portion located on a proximal end side of the cylindrical body with respect to the first cylindrical portion. A maximum dimension of an outer shape of a transverse section of the second cylindrical portion is larger than a maximum dimension of an outer shape of a transverse section of the first cylindrical portion, and a minimum dimension of the outer shape of the transverse section of the second cylindrical portion is smaller than a minimum dimension of the outer shape of the transverse section of the first cylindrical portion.

Systems and apparatuses are provided for clot extraction. In a first aspect, a system includes a first shaft, a second shaft, a third shaft, a coring element including a blade, and a mesh. The coring element has a first end and a second end. The first end of the coring element is coupled to the first shaft and the second end of the coring element is coupled to the second shaft. The mesh includes an open end and a second end. The open end of the mesh is coupled to a proximal portion of the coring element and the second end of the mesh is coupled to the third shaft through a tip structure. Other aspects and features are also claimed and described.