The present disclosure provides a medical shaver including: a shaver body (10) having a hollow portion therein; a shaft (20) having one end rotatably attached inside the shaver body and having a motor attachment part provided on the other end that is exposed outside the shaver body; a suction tube (30) rotatably attached to the hollow portion of the shaver body and having one end detachably coupled to the shaft so as to be rotated together with the shaft; a first seating groove (27) provided on an inner circumferential surface of the shaft; a second seating groove (33) provided on an outer circumferential surface of the suction tube; and a spring (s) located in the first and second seating grooves and coupling the shaft and the suction tube, in which the spring (s) has a structure in which both ends of a coil spring are connected to form a ring shape.

A method for synchronously driving more than two or more rotational tissue screws and a method for simultaneously affixing a medical device to tissue employing the synchronous drive system. The method employs a synchronous drive system is particularly configured to affix an apical cuff to cardiac muscle tissue by simultaneously driving a plurality of rotational tissue screws through the apical cuff and into cardiac muscle tissue thereby affixing the apical cuff to the cardiac muscle tissue.

Disclosed are nozzles and nozzle assemblies of liquid jet-forming surgical instruments, surgical instruments employing such nozzles and/or nozzle assemblies, and methods of fabricating the nozzle assemblies in forming surgical instruments. Also, disclosed are liquid jet-forming surgical instruments including both liquid jet-forming nozzles and optional evacuation lumens, which when provided can be configured to receive the liquid jet and evacuate the liquid forming the liquid jet. Certain embodiments of such surgical instruments include inventive nozzle alignment component(s) to facilitate alignment of the nozzles and evacuation lumen upon assembly. In certain embodiments, surgical instruments are provided that include a nozzle that is shaped to form a liquid jet, which has surfaces that are optically smooth. In certain embodiments, the nozzle has a configuration enabling the nozzle to form a liquid jet that has the ability to remain collimated over longer distances than is typically achievable with conventional liquid jet surgical instrument nozzles having the same ratio of nozzle length to minimum inner diameter of the jet opening. In certain embodiments, nozzle assemblies comprising an operative assembly of at least two subcomponents, which together provide a nozzle are provided. In certain embodiments, the at least two sub-components may comprise a nozzle-providing component, such as a nozzle ring, and a holder that is configured to retain and position the nozzle-providing component in the nozzle assembly. In certain embodiments, the nozzle-providing component can comprise a liquid flow passage having a diameter that continuously decreases along at least a portion of its length.

An elongate endovascular element for crossing through an obstruction in a blood vessel comprises: a proximal section; a distal tip section of smaller diameter than the proximal section; and a distally-tapering intermediate section extending between the proximal and distal tip sections; wherein the tapered intermediate section has a length that is substantially λ/2 or a multiple of λ/2, where λ is a wavelength of a driving frequency that will produce longitudinal resonance in the element.

A method is disclosed comprising: introducing a treatment member into a living body and positioning the treatment member adjacent substance in the living body to be ground; moving the treatment member in at least a clockwise direction or a counterclockwise direction about a central axis, which is different from an axis of rotation of the treatment member while the treatment member is positioned adjacent the substance to be ground in the living body to grind the substance; and shearing debris resulting from the grinding of the substance to reduce a size of the debris.

A vibration type removal apparatus 2 includes a housing 10, a holding member 11, a tool 12, a control device 20, a vibration device 21, and a cooling pump 22. The control device 20 drives the cooling pump 22, and cooling water supplied from the cooling pump 22 passes through a flow path 25 in the housing 10, and is sprayed toward the tool 12 from a distal end of the flow path 25. In this state, the tool 12 is inserted between a hard tissue HT and a soft tissue ST, the vibration device 21 is operated, and the tool 12 is vibrated. Due to the vibration of the tool 12, a surface of the hard tissue HT which adheres to the soft tissue ST is cut, and the hard tissue HT is peeled and removed from the soft tissue ST.

An intra-cardiac myocardial resection device comprises an outer-layer protective sleeve and an inner-layer scalpel sleeve. An upper sidewall of the outer-layer protective sleeve is provided with a resection window, and an upper edge of the resection window is provided with a downward hook; and a sidewall of the outer-layer protective sleeve is provided with an axial sliding groove. The inner-layer scalpel sleeve is mounted in the outer-layer protective sleeve, and an upper end of the inner-layer scalpel sleeve is provided with an annular blade having an upward edge. A sidewall of the inner-layer scalpel sleeve is provided with a hollow operation handle, and the hollow operation handle extends out of the sliding groove. During a surgery, performed by using the intra-cardiac myocardial resection device, a resection extent and a resection effect can be monitored, and the surgical treatment effect for such patients is improved.

A device for creating a cavity or a channel in bone. First and second steering cables are coupled to a flexible elbow or a tip of a shaft. A control assembly is operably coupled to the first and second steering cables and configured to tension one of the steering cables and slacken another one of the steering cables so as to flex the flexible elbow. The control assembly may include a steering block axially movable within a handle with a knob threadably coupled to the steering block. The steering block may be rotatably fixed within the handle. The first and second steering cables may be anchored to the steering block, such as to opposite sides of the steering block. The first steering cable may extend along a linear path, and the second steering cable may extend along a curved rib of the handle.

An apparatus includes a shaft assembly, an end effector, and a sensor. The shaft assembly defines a longitudinal axis. The end effector is positioned at a distal end of the shaft assembly. A portion of the end effector is offset from the longitudinal axis. The sensor is configured to generate a signal in response to a magnetic field. The signal is configured to indicate a position of the end effector within three-dimensional space. The sensor is coaxially positioned about the longitudinal axis.

The present disclosure provides a medical shaver including: a shaver body (10) having a hollow portion therein; a shaft (20) having one end rotatably attached inside the shaver body and having a motor attachment part provided on the other end that is exposed outside the shaver body; a suction tube (30) rotatably attached to the hollow portion of the shaver body and having one end detachably coupled to the shaft so as to be rotated together with the shaft; a first seating groove (27) provided on an inner circumferential surface of the shaft; a second seating groove (33) provided on an outer circumferential surface of the suction tube; and a spring (s) located in the first and second seating grooves and coupling the shaft and the suction tube, in which the spring (s) has a structure in which both ends of a coil spring are connected to form a ring shape.