Abstract: A vascular shunt stent includes a main body tube and at least one branch tube axially inserted into an inner lumen of the main body tube. The main body tube includes a tubular main membrane. At least one branch tube includes a tubular branch membrane, which is accommodated in an inner lumen of the main membrane. A first sealing film is arranged between a distal end of the main membrane and a distal end of the branch membrane to separate the inner lumen of the main membrane into a main opening and at least one first sub-opening, the first sub-opening is in sealed connection with the distal end of the branch membrane. An included angle between a plane defined by the first sub-opening is not parallel with a plane defined by the main opening.

Abstract: A neutron capture therapy system includes a neutron beam generating unit, an irradiation room configured to irradiate an irradiated body with a neutron beam, a preparation room configured to implement preparation work required to irradiate the irradiated body with the neutron beam, and an auxiliary positioner disposed in the irradiation room and/or the preparation room. The irradiation room includes a first shielding wall, a collimator is disposed on the first shielding wall for emitting the neutron beam, and the neutron beam is emitted from the collimator and defines a neutron beam axis. The auxiliary positioner includes a laser emitter that emits a laser beam to position the irradiated body, wherein the position of the laser emitter is selectable. Therefore, the irradiated body can be positioned in any case to implement precise irradiation.

Abstract: A neutron capture therapy system includes an accelerator for accelerating charged particles to generate a charged particle beam, a beam transmitting device, and a neutron beam generating device. The neutron beam generating device further includes a first, a second and a third neutron beam generating device. The beam transmitting device further includes a first transmitting device connected to the accelerator, a beam direction conversion device configured to switch a traveling direction of the charged particle beam, and a second, a third and a fourth transmitting device that respectively transmit the charged particle beam from the beam direction conversion device to the first, the second and the third neutron beam generating device, wherein two of the first, the third and the fourth transmitting device define a first plane, a first and a second transmitting device define a second plane, and the first plane is different from the second plane.

Abstract: A method and an assembly for securing a crimped medical device over a deflated balloon of a balloon catheter is provided. The medical device is positioned in its expanded state over the deflated balloon of the balloon catheter, and is then crimped over the deflated balloon. First and second eyelets of first and second strings, respectively, are then threaded through first and second rings, respectively, that are provided on the medical device. Next, a locking wire is advanced through a lumen defined between the sheath and the catheter body to exit the distal end of the sheath, and then advanced through the first and second eyelets and into the distal tip of the balloon catheter. The sheath is then advanced over the crimped medical device to the distal tip to completely cover the crimped medical device.

Abstract: An instrument and method for tissue thermotherapy including an inductive heating means to generate a vapor phase media that is used for interstitial, intraluminal, intracavity or topical tissue treatment. In one method, the vapor phase media is propagated from a probe outlet to provide a controlled vapor-to-liquid phase change in an interface with tissue to thereby apply ablative thermal energy delivery.

Abstract: A stent device with skirt folds and a processing method thereof, a skirt folding method, and a heart valve. The stent device comprises a stent (1, 105) and a flexible skirt (2, 107), the skirt (2, 107) having an expanded state, in which the skirt is axially extended and surrounds the stent (1, 105) before release thereof, and a folded state, in which the skirt is driven by the deformation caused when the stent (1 , 105) is released, collapses and folds axially along the released stent (1, 105) so as to form an annular peripheral leakage-blocking portion. The peripheral leakage prevention technology enables an interventional stent to fit to the inner wall of a vessel more snugly, such that the stent does not easily move and is more stable, thereby being suitable for more people, reducing additional risks of surgery and preventing complications such as peripheral leakage and thrombus.

Abstract: A beam shaping assembly (10) used in a neutron capture system and capable of changing an irradiation range of a neutron beam. The beam shaping assembly includes: a beam inlet (11), a target (12), a moderator (13) adjoining the target (12), a reflector (14) surrounding the moderator (13), a thermal neutron absorber (15) adjoining the moderator (13), a radiation shield (16) arranged inside the beam shaping assembly (10), and a beam outlet (17). The beam shaping assembly (10) further includes replacement components (21, 22) that can be attached to and detached from the beam shaping assembly (10) to change the irradiation range of the neutron beam.

Abstract: A method for measuring radiation intensity includes measuring the radiation intensity received by the protein in a radiation field based on degree of protein degradation in the radiation field, wherein the degree of degradation is a ratio of the molecular weight of the protein before and after irradiation. The measuring method is simple in operation, small in number of steps, small in error, and capable of measuring radiation doses of various radiation fields or even mixed radiation fields. Use of a biological dosimeter for measuring the radiation intensity by the method in a neutron capture therapy system can not only assess radiation contamination in the irradiation chamber, but also evaluate the neutron dose.

Abstract: A method and an assembly for securing a crimped medical device over a deflated balloon of a balloon catheter is provided. The medical device is positioned in its expanded state over the deflated balloon of the balloon catheter, and is then crimped over the deflated balloon. First and second eyelets of first and second strings, respectively, are then threaded through first and second rings, respectively, that are provided on the medical device. Next, a locking wire is advanced through a lumen defined between the sheath and the catheter body to exit the distal end of the sheath, and then advanced through the first and second eyelets and into the distal tip of the balloon catheter. The sheath is then advanced over the crimped medical device to the distal tip to completely cover the crimped medical device.

Abstract: An artificial chordae tendineae implantation system includes a clamping device, a puncture device, a pushing device, and a detection device. The pushing device includes a pushing shaft. The clamping device includes a clamping push rod that receives an artificial chorda tendineae, and a distal clamp and a proximal clamp for cooperatively clamping a valve leaflet. The detection device includes one probe that is movably disposed in the pushing shaft. A probe outlet is provided at one of a clamping surface of the proximal clamp and a clamping surface of the distal clamp, and a probe accommodation chamber corresponding to the probe outlet is provided at the other one. When the clamping device is closed, the distal end of the probe protrudes from the probe outlet and is accommodated in the probe accommodation chamber, and whether the valve leaflet is clamped is detected.

Abstract: A valve prosthesis (10), comprising a stent (1), a leaflet (2), and a skirt (3); the stent (1) comprises an inflow end, an outflow end, and a plurality of wavy segments axially connected; the wavy segments comprise a plurality of reticular structure units disposed circumferentially; the leaflet (2) and the skirt (3) are fixed on the stent (1) respectively; the upper portion of the skirt (3) is provided with indentations (321); the skirt (3) is fixed with the leaflet (2) by means of the indentations (321); the skirt (3) further comprises first protrusion portions (323) extending toward the direction of the outflow end of the stent; one ends of the first protrusion portions (323) are connected with the indentations (321), and the other ends of the first protrusion portions are fixed to the stent (1); by such a way, the connection strength of the skirt (3) and the stent (1) is enhanced; and besides, when the valve prosthesis (10) is implanted at a lower position, perivalvular leakage preventing height can be inc

Abstract: An artificial chordae tendineae includes a chordae tendineae main body with at least one end connected to a fixing member. A side of the fixing member facing away from the chordae tendineae main body is provided with a puncturing connection member. An artificial chordae tendineae implantion system includes a clamping device, a puncturing device including a puncture needle, the artificial chordae tendineae, and a pushing device including a pushing shaft. The puncturing device and the clamping device are received in the pushing shaft. A proximal clamp of the clamping device is provided at a distal end of the pushing shaft. A distal clamp of the clamping device is provided at a distal end of the clamping push rod. A distal end of the puncture needle is provided with a tapped straight tip. The artificial chordae tendineae is received in the clamping device. The fixing member corresponds to the puncture needle.

Abstract: An instrument holder assembly for use with a robotic surgical system can comprise one or more modules for holding or guiding an instrument. Each module can comprise a variable diameter jaw having movable teeth configured to hold or guide different sized instruments. Each module can be attached to opposite ends of a main shaft that can couple to an arm of the robotic surgical system. A central passage can extend through each module and the main shaft and the variable diameter jaws can constrict the central passage. Teeth of the variable diameter jaws can be biased to a closed or opened position. A tensioner tool can be used to hold biasing elements in position so that the teeth can be loaded into the module. The teeth can be loaded into slots of the module using a tooth holder device.

Abstract: Embodiments described herein provide an implant for rigid intramedullary fixation of the hindfoot complex with the midfoot and/or forefoot and methods of implanting the same. Embodiments described herein can allow for the implant to be adapted to the patient based upon the extent of bone loss and instability. Embodiments herein also provide a jig system to facilitate the shaping of the foot and/or the implantation of the described internal fixation systems.

Abstract: Embodiments of the innovation relate to a ventilator, comprising: a positive displacement pump having a drive motor and configured to output a predetermined volume of inspiratory gas for each rotation of an output shaft of the drive motor; at least one pressure sensor configured to measure inspiratory pressure; and a control unit having a controller comprising a memory and a processor, the control unit disposed in electrical communication with the drive motor and with the at least one pressure sensor. The controller is configured to: receive at least one of an operation signal and a pressure sensor signal, and transmit a drive motor control signal to the drive motor to adjust at least one of a rotational speed of the output shaft and a number of rotations of the output shaft based upon the at least one of the operation signal and the pressure sensor signal.

Abstract: The present disclosure provides a multiple-processing device for an endoscope. The multi-processing device may comprise a plurality of processing units, a conveying component, and an operation component. The processing units may include a capsule body and clamping arms. A proximal end of the capsule body may be provided with a first limit part that may be available for deformation or failure under an external force. The distal end of a conveying pipe of the conveying component and/or the proximal end of the capsule body may be provided with a second limit part configured to expand and contract along a radial direction of the conveying pipe.

Abstract: Some embodiments of the present disclosure may provide an end effector instrument. The end effector instrument may include: an end effector device, the end effector device comprising an effector portion configured to perform a specified operation, and a delivery device connected to the end effector device, the delivery device being configured to deliver the end effector device to a target region where the specified operation is to be performed. The delivery device may include an operation portion. The operation portion may be configured to drive the effector portion to perform the specified operation.

Abstract: The medical imaging apparatus of the present invention includes a bath tank for accommodating a test subject, the test subject being at least a portion of a body of a human subject; a measurement device movable in a predetermined direction, the measurement device including ab group of elements to emit a radiation wave into the bath tank and receive a scattered radiation wave; and a control unit for measuring by the measurement device when at least one of a location of the test subject within a plane orthogonal to the predetermined direction, a location of the test subject in the predetermined direction, and continuity of data measured by the measurement device satisfies a predetermined condition. Because of this configuration, the medical imaging apparatus is able to acquire data covering the entire measurement target site.

Abstract: A leg pulling device has a traction device and a supporting device. At least one force or at least one pressure which is exerted on a patient by the supporting device upon the actuation of the traction device can be measured.