Abstract: Methods, systems and devices for applying energy to tissue, and more particularly relates to a system for ablating or modifying structures in a body with systems and methods that generate a flow of vapor at a controlled flow rate for applying energy to the body structure.

Abstract: Provided are a pro-endothelialization biological material and method for preparation thereof, and a pro-endothelialization heart valve and method for preparation thereof and interventional system. The pro-endothelialization biological material comprises a biological material and a pro-endothelializing growth factor loaded on the surface of biological material; capable of capturing endothelial progenitor cells, enabling the endothelial progenitor cells to attach, grow, and differentiate on the surface of the biological material. The methods for preparation of the pro-endothelialization biological material comprises chemical grafting and physical coating methods. The heart valve can be prepared either by suturing followed by grafting or by grafting followed by suturing. A endothelial growth factor is directly loaded onto the surface of a biological material film, promoting the formation of endothelial cell layers on the surface of the biological material.

Abstract: Disclosed in the present invention are a stent apparatus having a self-pleated skirt, a processing method therefor, a skirt pleating method, and a cardiac valve. The stent apparatus comprises a stent, and is further provided with a flexible skirt. The skirt comprises: an unfolded state, where the skirt extends axially and surrounds the periphery of the stent before release; and a stacked state, where the skirt is driven by deformation during release of the stent, and gathers and is stacked along an axial direction of the released stent to form an annular perivalvular leakage blocking part. The stent apparatus is further provided with a pull-wire which is merely threaded on the skirt, and the pull-wire may react to the radial deformation during the release of the stent to drive the skirt to enter the stacked state.

Abstract: The present invention discloses a surgical stapler instrument. The surgical stapler instrument comprises a handle assembly having a proximal end and a distal end. A bottom jaw is detachably coupled to the distal end of the handle assembly. The bottom jaw having a staple cartridge surface, configured to eject one or more staples. Further, a top jaw is detachably coupled to the bottom jaw toward the distal end of the handle assembly. The top jaw comprises a staple pocket disposed over an anvil surface of the top jaw and configured to bend the ejected one or more staples and deliver into targeted tissues. An effective friction coefficient (?e) of the staple pocket of the top jaw is lower than the staple cartridge surface of the bottom jaw to achieve optimized stapling.

Abstract: Methods and surgical system for performing a surgical procedure. The surgical system includes a robotic system with a robotic arm having a surgical instrument attached thereto. A computer system of the robotic system receives at least one image and forms a model of a surgical area. A computer operated tracking system of the robotic system obtains position data related to a patient's bone from tracking elements. Based on the model of the surgical area and the tracked bone position, the robotic arm then performs the surgical procedure with the surgical instrument, and the robotic system adjusts the procedure as a result of the tracked bone position.

Abstract: The present invention provides a filter device, including a filtering part, a constraining part, a stent part, and a connecting part. The filtering part has a first end and a second end opposite to each other. The constraining part is degradable and at least configured to constrain the first end of the filtering part. The stent part has a first end and a second end opposite to each other. The first end of the stent part is connected to the second end of the filtering part, and disposed coaxial with the filtering part. The connecting part is disposed on one or more of the first end of the filtering part and the second end of the stent part, and is configured to connect to an external mechanism, and the constraining part is further configured to constrain the second end of the stent part when the connecting part is disposed at the second end of the stent part.

Abstract: A connection mechanism 242 of the present invention is configured such that, in a state where an inclined end surface 536 of a male connection portion 500 is brought into contact with a protruding portion 618 of a female connection portion 600, by moving the male connection portion 500 toward the female connection portion 600, the male connection portion 500 rotates and the protruding portion 618 is inserted into a guide portion 534 and a connector 532 is connected to an adapter 610. The lock mechanism 243 is configured such that the protrusion 704 of the male lock portion 700 comes in contact with a wall 858 of a circumferential recess 842 disposed in a proximal cylindrical member 806 of the female lock portion 800, and in this state, the proximal cylindrical member 806 is further moved toward a proximal fixing member 804 against an urging force of a spring 854, and then the male lock portion 700 is rotated to move to a space 856 of the circumferential recess 842.

Abstract: The present invention provides a treatment apparatus for an endoscope, an endoscope, and an expandable frame. The treatment apparatus for an endoscope includes: a first electrode, including an electrical treatment part and an operating wire; a second electrode, provided inside the endoscope, and including a first electrically conductive part and a sliding contact part electrically connected to the first electrically conductive part, the first electrically conductive part being configured to contact a human body; and a sheath, provided on a surface thereof with a second electrically conductive part, where the operating wire is configured to be passed through the sheath, the sheath is configured to be passed through the endoscope, and when the sheath is located in a preset position, the sliding contact part contacts and is electrically connected to the second electrically conductive part and the sheath is in sliding fit with the sliding contact part.

Abstract: The invention relates to a recalibration device (1) used during the acquisition of images of an anatomical area of a patient during robot-assisted surgery, including a body (3) made of radxoliacent material, which comprises fiducial markers (9) made of radiopaque material, said body (3) having a bearing surface (7) intended to be manually placed on a surface of said anatomical area of the patient. According to the invention, said fiducial markers (9) are arranged in a specific geometrical pattern enabling a certain detection of the positioning and orientation of the recalibration device (1) in a three-dimensional digital model built from the images derived from the acquisition of the anatomical area.

Abstract: A transmission includes a transmission case provided with an internal gear an inner wall thereof and a multistage planetary gear mechanism housed in the transmission case. Each stage of the multistage planetary gear mechanism includes a retainer, a sun gear and a plurality of planetary gears mounted on the retainer. The plurality of the planetary gears in the last planetary gear stage of the multistage planetary gear mechanism includes four planetary gears annularly arranged between the corresponding sun gear and the inner gear in an uneven manner.

Abstract: A quick insertion-and-removal device comprises: a base connected to a surgical instrument; an outer sheath limiting assembly comprising a limiting element capable of moving relative to the base, wherein the limiting element is configured to lock or unlock an outer sheath; a push-rod limiting assembly comprising a sliding sleeve capable of moving relative to the base to lock or unlock a push rod; and a mounting-dismounting control assembly comprising a joint unlocking member, wherein the joint unlocking member is connected to the sliding sleeve and can drive the sliding sleeve to move, relative to the base, to a position where the push rod is unlocked, and in this position, the joint unlocking member is engaged with the limiting element and can unlock the outer sheath.

Abstract: A distal end structure of a sheath for delivering an interventional instrument includes a tubular body section which has opposite distal and proximal sides. A plurality of elastic expansion pieces is arranged circumferentially at the distal side of the body section at intervals. Each expansion piece assumes a converged configuration extending in an axial direction of the body section and a flared configuration away from each other. A connecting strip is provided between two adjacent expansion pieces, and two ends of the connecting strip are respectively connected to expansion pieces at respective sides at connection positions adjacent to distal ends of the expansion pieces. In the converged configuration of each expansion piece, a middle portion of the connecting strip is folded and received in a region between two adjacent expansion pieces; and in the flared configuration of each expansion piece, the middle portion of the connecting strip is unfolded.

Abstract: An implant delivery handle (2), an implant system, a delivery system and method for operating thereof are disclosed. A ratchet assembly (340) in the implant delivery handle (2) includes a cam (3461), a ratchet wheel (342) and two ratchet pawls (344, 345). The ratchet wheel (342) is secured to a synchronous conveying device (320) and is configured to cooperate with the two ratchet pawls (344, 345) to control an axial movement and an axial movement direction of an outer (120) or an inner (110) tube so as to enable a safe self-locking, and transmission and guiding of the outer (120) or inner tube (110). A first end of each ratchet pawl (344, 345) is disposed rotatably on one side of the cam (3461) and a second end of each ratchet pawl (344, 345) is disposed in the vicinity of the ratchet wheel (342), and the ratchet pawls are configured to control a rotation and a rotational direction of the ratchet wheel (342).

Abstract: A heart valve prosthesis stent comprises an inner stent and an outer stent. The outer stent comprises an outer body section and an outer skirt section which extends from the outer body section and is located on the radial outer side of the outer body section. The inner stent comprises an inner body section at least partially located in the outer stent and an inner skirt section protruding out of the radial outer side of the inner body section from an inflow end of the inner body section. The inner skirt section (32) outwardly protrudes out of the radial outer side of the inflow end of the outer body section, the outer skirt section, the inner skirt section and the section of the outer body section located between the outer skirt section and the inner skirt section jointly form an accommodating space with an outward opening.

Abstract: The present disclosure provides a treatment apparatus for an endoscope, comprising: a first electrode, the first electrode including an electrical treatment part and an operating wire; a sheath, a surface of the sheath being provided with a bendable flexible conductive part, the flexible conductive part being in the form of a tube, the flexible conductive part having a gap formed in the flexible conductive part to facilitate a bend of the flexible conductive part, the surface of the sheath being communicated with an external air of the flexible conductive part through the gap; wherein the operating wire is threaded within the sheath and the electrical treatment part extends out from a front end of the sheath.

Abstract: An adjustable heart valve repair system includes a suture implanting apparatus and a suture locker. The suture implanting apparatus is operable to implant a suture into at least one leaflet of a heart valve. The suture locker is operable to fix the suture. The suture locker includes an adjusting device to adjust tensioning or loosening of the suture.

Abstract: An atrioventricular valve clamping device and an atrioventricular valve clamping system are provided in the disclosure. The atrioventricular valve clamping device includes a support member, an occluding member, and a clamping member. A direction of a central axis of the occluding member is regarded as a Z-direction, a direction parallel to a width direction of the clamping member and perpendicular to the Z-direction is regarded as a Y-direction, and a direction perpendicular to the Y-direction and the Z-direction is regarded as an X-direction. The support member has a length in the Z-direction. The occluding member is sleeved on the support member in the Z-direction. The clamping member is disposed outside the occluding member and configured to be unfolded or folded relative to the occluding member. The occluding member is resilient and has a three-dimensional shape.

Abstract: Provided is a radiation detection system for improving the accuracy of a neutron beam irradiation dose for a neutron capture therapy system. The neutron capture therapy system includes a charged particle beam, a charged particle beam inlet for passing the charged particle beam, a neutron generating unit for generating the neutron beam by means of a nuclear reaction with the charged particle beam, a beam shaping assembly for adjusting flux and quality of the neutron beam, and a beam outlet adjoining to the beam shaping assembly, the radiation detection system includes a radiation detection device arranged within the beam shaper or outside the beam shaping assembly, the radiation detection device is used for real-time detection of the overflowing neutron beam by the neutron generating unit or the generated ?-ray after the nuclear reaction of the charged particle beam with the neutron generating unit.

Abstract: A radio-frequency ablation instrument (100) and a control method and a control apparatus (30) thereof, a system, an electronic device (90) and a storage medium are provided. The control method includes: acquiring at least one current ablation parameter (S701); calculating a power value needed to be outputted in a next cycle according to the current ablation parameter (S702); acquiring an input control voltage corresponding to the power value according to the power value needed to be outputted (S703); and controlling the radio-frequency energy output according to the input control voltage (S704).

Abstract: A transseptal mitral valve apparatus is provided. The transseptal mitral valve apparatus includes a valve prosthesis and a ventricle anchoring member. The valve prosthesis includes a stent body playing a supporting role and a prosthetic valve leaflet. The prosthetic valve leaflet is fixed at a pre-set position of the stent body. The ventricle anchoring member includes a connecting portion and an anchoring portion attached to a ventricle inner all. The anchoring portion is fixed to the stent body by the connecting portion. The invention further provides a method for implanting the transseptal mitral valve apparatus.