Abstract: A catheter handle for a steerable catheter. A catheter tube is connected to the catheter handle. A steering wire has a center point and two legs, the center point is affixed to a distal tip of the catheter tube, and each of the two legs of the steering wire is affixed to a respective rack of a pair of racks inside the catheter handle. Each of the racks of the pair of racks is toothed and slidable and the racks are mounted in opposition to each other within the catheter handle. A first gear is disposed between the racks and a gear train is positioned to engage the first gear. The gear train is sized to provide a transmission gain to the first gear. A knob is attached to the gear train and operating the knob rotates the gear train to engage the first gear and causes the racks to slide in opposite directions thereby pulling one of the two legs to deflect a distal end of the catheter tube.

Abstract: Provided are tissue repair and sealing devices, and methods for the use of tissue repair and sealing devices, for use in both minimally invasive surgical (MIS) procedures and open, non-MIS procedures to rapidly repair tissue fenestrations and create a pressure-resistant, watertight seal in a tissue barrier. Tissue repair and sealing devices disclosed herein comprise an integrated graft and deployable clasp assembly and an applicator assembly having a clasp retain and release member that is slidably connected to a folded, deployable clasp. The applicator assembly places a graft on a tissue inner surface and a deployable clasp on a tissue outer surface to secure the graft to the tissue inner surface to, thereby, repair a tissue fenestration and create a watertight barrier.

Abstract: The application provides a valve clamping system. The valve clamping system includes a pushing device and a valve clip with coatings. The valve clip includes a push rod, the coatings, and a proximal clamping plate, and a distal clamping plate. The proximal clamping plate and the distal clamping plate extend radially outwardly relative to the push rod. The distal clamping plate is connected to the push rod. The proximal clamping plate is arranged between the push rod and the distal clamping plate. A valve holding space is formed between the proximal clamping plate and the distal clamping plate. The push rod is capable of driving the distal clamping plate to be expanded radially. The proximal clamping plate is capable of expanding toward the distal clamping plate by an elastic strain of the proximal clamping plate and is configured to clamp a valve tissue received in the valve holding space.

Abstract: This application provides a robotic arm and a control method therefor. The robotic arm comprises a spatial positioning mechanism, a planar motion mechanism and a connection and rotation joint connecting the spatial positioning mechanism and the planar motion mechanism. The space positioning mechanism comprises a base, and a joint mechanism including multiple joints, with the joint at a head end thereof installed onto the base, and the joint at a tail end rotatably connected to the connection and rotation joint; a tail end of the planar motion mechanism is connected to a surgical instrument. Perpendicular line of a plane where the planar motion mechanism is located is perpendicular to rotation axis of the connection and rotation joint; and the intersection between the rotation axis and axis of the surgical instrument is an active remote-center-of-motion point, which facilitates setting of the active remote-center-of-motion point and reduces occurrence of multi-arm collision.

Abstract: Provided are a high-intensity focused ultrasound apparatus (10) and a control method. According to the high-intensity focused ultrasound apparatus (10), by providing a focusing transducer (120) having a freely transformable shape, after an entire transducer assembly (100) extends into an inner cavity of an object to be treated, the transducer assembly (100) can extend through a narrow part into the inner cavity of an object to be treated, and after extending into the inner cavity of the object to be treated, the shape of the focusing transducer (120) in the transducer assembly (100) changes, so that the effective area of the focusing transducer (120) increases, and the ultrasonic energy produced increases, thereby enhancing the irradiation intensity for a region to be treated, and satisfying normal operation requirements of the transducer assembly (100).

Abstract: A needle assembly (20, 120, 220, 320) is provided that includes a needle (22) and a suture (24) coupled to the needle (22), and a needle guide tool (30, 130, 230, 330). The needle guide tool (30, 130, 230, 330) is configured to pass the needle (22) and the suture (24) through tissue of a body portion of a subject, and includes a needle guide (34, 134, 334), which is shaped so as to define a needle-guide surface (36, 136) that is configured to slidably contact a body-portion surface of the body portion without penetrating the body¬ portion surface.

Abstract: The present disclosure discloses a cortical button for surgical fixation is disclosed. The cortical button includes a first section defining a substantially flat head and a second section defining a solid stub. The second section being co-axial to and extending substantially vertically from the first section. The first section being defined with a plurality of provisions. The plurality of provisions extending partially along an outer circumference of the second section and being configured to receive a suture.

Abstract: A neutron capture therapy system and a target for a particle beam generating device, which may improve the heat dissipation performance of the target, reduce blistering and extend the service life of the target. The neutron capture therapy system includes a neutron generating device and a beam shaping assembly. The neutron generating device includes an accelerator and a target, and a charged particle beam generated by acceleration of the accelerator interacts with the target to generate a neutron beam. The target includes an acting layer, a backing layer and a heat dissipating structure, the acting layer interacts with the charged particle beam to generate the neutron beam, the backing layer supports the action layer, and the heat dissipating structure includes a tubular member composed of tubes arranged side by side.

Abstract: An electronic patch, for stimulating tissue healing at a target site, is flexible enough to generally conform to a body surface adjacent to the target site, and includes: a battery or an arrangement of multiple batteries less than 5 mm thick; a capacitor connected directly with a coil in series; and pulse generating circuitry, powered by the battery or batteries. The circuitry repeatedly changes the voltage across the capacitor and coil, to produce pulses of current in the coil. The current produces a pulsed electromagnetic field at the target site for stimulating tissue healing, most of the electromagnetic field energy of each pulse being converted into electrostatic energy of the capacitor at the end of the pulse and back into electromagnetic field energy of the next pulse.

Abstract: An instrument holder system comprises a guide body comprising first and second ends, and a passage extending between the first and second ends along an axis to receive an instrument, and a mechanical or electro-mechanical measuring device comprising an attachment body for coupling to the guide body, a probe to extend into a trajectory of the passage to contact the instrument and generate positional data, and, optionally, a control device coupled to the probe to receive the positional data. A method of determining a position of an instrument relative to an instrument holder comprises inserting the instrument into a passage of the instrument holder, moving the instrument into contact with a sensing element, moving a tip of the instrument out of the instrument holder to cause movement of the sensing element, and correlating movements of the sensing element to distances the tip extends out of the instrument holder.

Abstract: An artificial heart valve (100), comprising a body stent and an artificial valve leaflet (130), wherein an outflow end of the body stent is connected to an inflow end of the artificial valve leaflet (130), and when the artificial heart valve (100) is implanted in the heart, the body stent is secured to a mitral valve annulus, and the artificial valve leaflet (130) is in sealing contact with an inner side of a native posterior leaflet (21) of a mitral valve leaflet and mates with a native anterior leaflet (22) of the mitral valve leaflet, so as to ensure unidirectional flow of blood in a left atrium (10) and a left ventricle (20). The artificial valve leaflet (130) is used for space occupation and mating, thereby effectively utilizing the healthy native anterior leaflet (22), and improving the mating performance and service life of the valve leaflet.

Abstract: A delivery catheter, comprising a first catheter section (10), a second catheter section (20), a first pull wire assembly (30) and a second pull wire assembly (40); wherein the first pull wire assembly (30) comprises a first pull wire (32) and a first pull wire ring (31), when the first pull wire (32) is pulled, the first pull wire ring (31) drives the first catheter section (10) to bend; the second pull wire assembly (40) comprises a second pull wire (42) and a second pull wire ring (41), wherein the second pull wire ring (41) is disposed at a distal end of the second catheter section (20) and connected to a proximal end of the first catheter section (10); when the second pull wire (42) is pulled, the second pull wire ring (41) drives the second catheter section (20) to bend; an angle at which the first catheter section (10) can bend is greater than an angle at which the second catheter section (20) can bend.

Abstract: The present invention relates to a microfluidic chip for sorting living cells. A sample flow channel communicates with a liquid inlet end of a sorting flow channel. A gas inlet flow channel, a target flow channel and a non-target flow channel communicate with a liquid outlet end of the sorting flow channel. An included angle between the target flow channel and the sorting flow channel is from 100° to 130°, and an included angle between the non-target flow channel and the sorting flow channel is from 100° to 140°. A distance between an intersection of an axis of the gas inlet flow channel and an axis of the sorting flow channel and an intersection of the sorting flow channel, the target flow channel and the non-target flow channel is from 0.02 mm to 0.05 mm.

Abstract: An anchoring device (100, 200, 300) for prosthetic heart valve (400) and a prosthetic heart valve system. The prosthetic heart valve system includes an anchoring device (100, 200, 300) and a prosthetic heart valve (400). The anchoring device (100, 200, 300) includes an anchoring section (110, 210, 310) and a supporting section (120, 220, 320) that are axially connected to each other. The anchoring section (110, 210, 310) has an annular first cavity (111, 211, 311) configured to accommodate a prosthetic heart valve (400). The supporting section (120, 220, 320) is arranged on one side of the anchoring section (110, 210, 310) along the axial direction thereof. The supporting section (120, 220, 320) includes at least two elastic wires (121, 221, 321) arranged sequentially on the circumference of the anchoring section (110, 210, 310).

Abstract: An animal irradiation system includes a radioactive source and an irradiation fixing apparatus having irradiated bodies. The radioactive source includes a beam outlet having a first central axis. Radioactive rays generated by the radioactive source exit from the beam outlet and irradiate the irradiated bodies. The radioactive rays define a main axis around the first central axis. The irradiation fixing apparatus includes a box body, which is divided into multiple accommodating chambers around a second central axis. Each accommodating chamber accommodates an irradiated body. Multiple first irradiation holes corresponding to the accommodating chambers are formed on the box body. The radioactive rays pass through the first irradiation holes and then irradiate the irradiated bodies. A maximum distance from an inner wall of each first irradiation hole to the first central axis is less than a minimum distance from an inner wall of the beam outlet to the first central axis.

Abstract: Embodiments of the present disclosure provide a clip apparatus. The clip apparatus may include a conveying device and a plurality of clip devices. The conveying device may include a sheath pipe provided with a passage. The plurality of clip devices are provided outside of the passage of the sheath pipe. The plurality of clip devices are releasably connected in sequence, and each of the plurality of clip devices is configured to clip tissue.

Abstract: A detachment mechanism and a delivery catheter are used to enable delivery and detachment of an implant (1). The detachment mechanism includes a detacher (10), a first control member (20) and a second control member (30). A distal end of the detacher (10) is configured for engagement of the implant (1) therewith. The detacher (10) defines a through hole (11). The first control member (20) and the second control member (30) are detachably engaged with or directly joined to each other. When distal ends of the first control member (20) and the second control member (30) are inserted through the through hole (11) and engaged with each other, the first control member (20) and the second control member (30) are locked against the detacher (10). When the first control member (20) is pulled and removed from the through hole (11), the first control member (20) and the second control member (30) are detached from the detacher (10).

Abstract: A catheter assembly (1), an implant system, an implant delivery system and a method of use thereof. In the implant delivery system, an inner tube (120) is made of an elastic material, and an outer sheath tube (110) and a guidewire tube (130) are each made of a plastic material. A distal end portion of each of the outer sheath tube (110) and the guidewire tube (130) is shaped into a curved form to provide a curved channel for the inner tube (120). The inner tube (120) is elastically inserted through the curved channel. This dispenses with the need for bending control from an outer sheath tube control device (21) and an inner tube control device (22), reducing requirements and difficulties in designing them and thus resulting in cost savings. Moreover, it makes the implant delivery system more easily operable, safer and more reliable, with lower requirements on a surgical incision, and capable of delivering a stent through a curved access accurately to a designated site.

Abstract: The disclosure relates to a cryoablation catheter and a cryoablation system. The cryoablation catheter comprises a catheter body and a freezing unit. The catheter body comprises a cold-source fluid input lumen and a cold-source fluid output lumen, both extending in an axial direction of the catheter body, and the freezing unit is arranged at a distal portion of the catheter body, and comprises a first balloon in fluid communication with the cold-source fluid input lumen and the cold-source fluid output lumen, and a second balloon arranged external to the first balloon with the length of the first balloon being less than the length of the second balloon. When the first balloon and the second balloon are dilated, a cavity is formed between the first balloon and the second balloon, to prevent the energy transfer in a space of the freezing unit corresponding to the cavity.

Abstract: An implant delivery handle, a delivery system and a method of operation thereof are disclosed. The implant delivery handle is able to switch an inner catheter (1) between unlocked and locked configurations through pivoting a locking knob (43) about an axis of the inner catheter (1) to cause a locking part (42) to exert or withdraw a radial pressure on the inner catheter (1). The implant delivery handle has a simplified structure and can be operated more easily. Moreover, the locking knob (43) for the inner catheter (1) and the control handwheel (33) for the flexible catheter (2) employ distinguishable designs, which effectively prevent a surgeon from being confused with the two actions.