Abstract: A waveguide rod for an ultrasonic scalpel having a relatively desirable amplitude and frequency comprises a proximal gain structure, a distal gain structure, an intermediate structure, and a frequency adjustment structure. The proximal gain structure and the intermediate structure are connected in a position near an antinode of longitudinal vibration of the waveguide rod through a proximal side gain step. The distal gain structure and the intermediate structure are connected in a position near an antinode of the longitudinal vibration of the waveguide rod through a distal side gain step. The intermediate structure comprises N (N>0, and N is an integer) gain holding structures that are connected two by two in a position near an antinode of the longitudinal vibration of the waveguide rod through an intermediate gain step. X (X>0, and X is an integer) frequency adjustment structures exist on the gain holding structure.

Abstract: An adjustment mechanism for adjusting a formed staple height of a suture staple in a stapler comprises a first handle portion and a second handle portion. The first handle portion comprises a cartridge support located at a distal end, a cartridge assembly, a drive assembly, and the adjustment mechanism for adjusting a formed staple height of a suture staple, and the second handle portion comprises an anvil located at a distal end. The cartridge assembly comprises suture staples, and the drive assembly can drive a suture staple to leave the cartridge assembly to reach the anvil to be pressed and formed. The adjustment structure adjusts a distance between the drive assembly and the anvil to adjust a formed staple height of a suture staple in a stapler. This application further relates to a stapler, comprising the adjustment mechanism for adjusting a formed staple height of a suture staple in a stapler.

Abstract: A bending control mechanism includes a turning power input mechanism A, a turning transmission mechanism B, a locking mechanism C and a linear power output mechanism D; further, the turning power input mechanism A and the turning transmission mechanism B which are coaxially arranged have a relative rotating angle range in the circumferential direction; the turning power input mechanism A sequentially rotates in an angle I, an angle range II and an angle III while rotating relative to the turning transmission mechanism B from one end angle to the other end angle within a relative rotating angle range, wherein the angle I or the angle III corresponds to turning; the angle range II corresponds to a locking state. With the adoption of the mechanism, the problem of turning and fixing of the surgical instrument in a human body during surgery is solved, and the risk of surgery is reduced.

Abstract: A bending control mechanism includes a turning power input mechanism, a turning transmission mechanism, a locking mechanism and a linear power output mechanism. The turning power input mechanism and the turning transmission mechanism which are coaxially arranged have a relative rotating angle range in the circumferential direction; the turning power input mechanism sequentially rotates in an angle I, an angle range II and an angle III while rotating relative to the turning transmission mechanism from one end angle to the other end angle of a relative rotating angle range, wherein the angle I or the angle III corresponds to turning; the angle range II corresponds to a locking state. With the adoption of the mechanism, the problem of turning and fixing of the surgical instrument in a human body during surgery is solved, and the risk of surgery is reduced.

Abstract: A surgical instrument comprises an actuator, an extension tube and a controller, wherein the near end of the extension tube is connected with the controller, the far end of the extension tube is connected with the actuator, and the actuator can rotate relative to the far end of the extension tube. The controller comprises a bend control mechanism capable of moving in at least one direction. The extension tube comprises a first flexible component and moves in at least one direction through the bend control mechanism. The first flexible component enables the actuator to rotate relative to the far end of the extension tube towards at least one side. A bendable magazine is further provided. The actuator can bend relative to the far end of the extension tube by a larger angle through the flexible components, thereby being suitable for medical treatment under more complex clinical conditions.

Abstract: A bending control mechanism includes a turning power input mechanism, a turning transmission mechanism, a locking mechanism and a linear power output mechanism. The turning power input mechanism and the turning transmission mechanism which are coaxially arranged have a relative rotating angle range in the circumferential direction; the turning power input mechanism sequentially rotates in an angle I, an angle range II and an angle III while rotating relative to the turning transmission mechanism from one end angle to the other end angle of a relative rotating angle range, wherein the angle I or the angle III corresponds to turning; the angle range II corresponds to a locking state. With the adoption of the mechanism, the problem of turning and fixing of the surgical instrument in a human body during surgery is solved, and the risk of surgery is reduced.

Abstract: A bending control mechanism includes a turning power input mechanism A, a turning transmission mechanism B, a locking mechanism C and a linear power output mechanism D; further, the turning power input mechanism A and the turning transmission mechanism B which are coaxially arranged have a relative rotating angle range in the circumferential direction; the turning power input mechanism A sequentially rotates in an angle I, an angle range II and an angle III while rotating relative to the turning transmission mechanism B from one end angle to the other end angle within a relative rotating angle range, wherein the angle I or the angle III corresponds to turning; the angle range II corresponds to a locking state. With the adoption of the mechanism, the problem of turning and fixing of the surgical instrument in a human body during surgery is solved, and the risk of surgery is reduced.

Abstract: A stent graft (5) comprises a tubular graft member (4), and a plurality of sloping stent members (3) substantially coaxial with and coupled to the tubular graft member (4). Each of the sloping stent members (3) comprises multiple uneven apexes characterizing a round tubular configuration with a distal end and a proximal end disposed about a longitudinal axis. The distal apexes of the sloping stent member (3) are arranged in substantially the same plane substantially horizontal to the longitudinal axis of the sloping stent member and the proximal apexes are arranged in a sloping plane oblique to the longitudinal axis.

Abstract: A stent graft (5) comprises a tubular graft member (4), and a plurality of sloping stent members (3) substantially coaxial with and coupled to the tubular graft member (4). Each of the sloping stent members (3) comprises multiple uneven apexes characterizing a round tubular configuration with a distal end and a proximal end disposed about a longitudinal axis. The distal apexes of the sloping stent member (3) are arranged in substantially the same plane substantially horizontal to the longitudinal axis of the sloping stent member and the proximal apexes are arranged in a sloping plane oblique to the longitudinal axis.

Abstract: A new stent-graft is provided with an improved structure design which comprises multiple stent-graft units with/without one or two open stents sutured to combine the uniform prosthesis without a connector bar in the place where flexing required. Each stent-graft unit comprises a stent sutured to a tubular graft. The new stent-graft can bend, provides a smooth inner surface and is stable after placement within an inner lumen of the human body.