Abstract: M Disclosed is a valve clamp for preventing leaflet injury, a valve clamping system, and a method for repairing a valve. The valve clamp for preventing leaflet injury comprises a fixed base and a pair of clamp arms that are openably and closeably disposed on opposite sides of the fixed base, wherein each of the clamp arms has a connection end connected to the fixed base, a free end opposite to the connection end, and a gripping section between the connection end and the free end, the gripping section is at least partially recessed inwardly to form a capture zone, and the capture zone extends toward the free end and then extends toward a direction away from the capture zone of the other clamp arm to form a first flanging section.

Abstract: Disclosed are a sheath adjustable in multiple directions and a transcatheter interventional system. The sheath that can be adjusted in multiple directions includes: a body section, a bending section, connected with the distal end of the body section, the bending section is a multi-layer composite tube body and includes a plurality of segments, the middle layer of the multi-layer composite tube body is a woven mesh, and the density of the woven mesh of the plurality of segments is gradually reduced in the direction from the proximal end to the distal end; and at least a pair of traction mechanisms, each pair of the traction mechanism respectively passes through the bending section and the body section, to adjust the bending angle of the bending section to different directions.

Abstract: Disclosed are a valve clamping device with an adjustable bearing force and a valve clamping system. The valve clamping device with an adjustable bearing force comprises: a support portion comprising a connecting end and a free end disposed oppositely; a hollow adjustment portion made of a shape memory material, one end of which is sleeved outside the connecting end and connected to the support portion, and another end of which hangs in air; a clamping portion enclosed outside the adjustment portion; and a driving portion connected to the clamping portion to drive the clamping portion to open or close around the adjustment portion; wherein the free end of the support portion is within the adjustment portion, and a proximal end of the adjustment portion is spaced apart from a proximal end of the support portion.

Abstract: A steerable catheter suitable for left-hand operation includes a tube, a handle assembly, and a Luer connector. The handle assembly comprises a holding handle, a slide mechanism, and a slide control mechanism; a proximal end of the tube passes through a cavity of the holding handle to be connected with the Luer connector; the slide mechanism comprises a slide base body, and a slide member axially sliding along the holding handle and fitted on the slide base body; the slide member is fixedly connected to a pull wire; the slide control mechanism comprises a connecting member connected with the slide member, and a drive adjustment member connected with the connecting member and adjusting the position of the slide member; the drive adjustment member is provided at the proximal end of the holding handle for convenient left hand operation.

Abstract: An artificial chordae tendineae implantation system, including a clamping device, puncture device, a pushing device, and a clamp assistance device. The pushing device includes a pushing catheter. The puncture device and the clamping device respectively are movably insertedly mounted within the pushing catheter. An artificial chordae tendineae is accommodated in the clamping device. The clamp assistance device includes a clamp assistance arm movably insertedly mounted within the pushing catheter and a clamp assistance member provided at the distal end of the clamp assistance arm. The clamp assistant member is made of a flexible and/or soft material. The clamp assistance member and the clamp assistance arm are accommodated together in the pushing catheter. The clamp assistance arm pushes the clamp assistance member to pass out from the distal end of the pushing catheter or the distal end of the clamping device.

Abstract: An interventional instrument manipulation accessory (100) is configured to position an interventional instrument (200). The interventional instrument manipulation accessory (100) includes a support frame (10) and at least one sliding assembly (20). The interventional instrument (200) is detachably connected to the sliding assembly (20). The support frame (10) includes a guiding rod (13). The guiding rod (13) is provided with at least one rack (131) in a length direction of the guiding rod (13). The sliding assembly (20) includes a sliding block (21) and an adjusting mechanism (23) detachably disposed at the sliding block (21). The adjusting mechanism (23) includes a limiting portion (235) and a gear (234) fixedly connected to the limiting portion (235). In the case where the sliding assembly (20) is mounted at the guiding rod (13), the sliding block (21) is sleeved on the guiding rod (13).

Abstract: A computer-implemented radio frequency power control method is disclosed. The method includes providing a radio frequency ablation device comprising a radio frequency energy generator, a signal acquisition device, and a controller, wherein the signal acquisition device comprises an electrocardiogram (ECG) signal acquisition device comprising a plurality of electrodes, and the controller is electrically connected to the radio frequency energy generator and the ECG signal acquisition device; obtaining, by the plurality of electrodes, multi-lead ECG signals, wherein the plurality of electrodes are in contact with a plurality of different body surface sites of a patient; and controlling, by the controller, a radio frequency power outputted by the radio frequency energy generator according to the multi-lead ECG signals.

Abstract: Some embodiments of the disclosure provide a valve clip delivery device. The valve clip includes at least two clamping members, and is further provided with a self-locking mechanism. The valve dip delivery device includes a handle and a catheter, wherein the handle includes a housing, a clamping control assembly and a locking control assembly, wherein a proximal end of the catheter is fixedly connected with a distal end of the housing, the clamping control assembly and the locking control assembly are both disposed on the housing, the locking control assembly is connected with the self-locking mechanism and is configured to control the valve clip to be switched between an unlocked state and a self-locking state, and the clamping control assembly is configured to control the at least two clamping members to be opened or closed when the valve clip is in the unlocked state.

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: 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: 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: The present application provides a bendable sheath, including a tube assembly and a handle assembly. The handle assembly includes an inner core, a fixing seat, and a driving member; the distal end of the tube assembly is provided with a bendable section, the proximal end of the tube assembly is fixedly connected to the inner core; the driving member is fixedly connected to the inner core; the driving member is rotatably connected to the fixing seat; one of the fixing seat and the driving member includes an elastic element, and the other includes an angle indexing part; the angle indexing part includes a plurality of indexing elements arranged at intervals; the elastic element moves among the plurality of indexing elements when the driving member rotates relative to the fixing seat.

Abstract: A valve clamping device (100) includes a fixing base (20), a pair of clamping arms (40), an actuator assembly (70) and a locking mechanism (80). The actuator assembly (70) includes an actuator shaft (72) movably inserted into the fixing base (20), the actuator shaft (72) moves axially to actuate the clamping arms (40) to be open and closed relative to the fixing base (20), and a positioning portion (720) is provided on the outer peripheral surface of the actuator shaft (72). The locking mechanism (80) includes a locking member (82) and a pushing member (84), a locking hole (820) is provided axially in the locking member (82), the actuator shaft (72) passes through the locking hole (820), and the pushing member (84) abuts against the locking member (82) and is provided obliquely in the fixing base (20), so that an edge (281) of the locking hole (820) is engaged with the positioning portion (720).

Abstract: A tissue gripper (60), includes a connecting frame (62) and two gripping arms (64). The connecting frame (62) includes two spaced connecting pieces (623), and the two gripping arms (64) are respectively arranged at sides of the two connecting pieces (623). Each gripping arm (64) includes a bending section (641) connected to the corresponding connecting piece (623) and a gripping section (643) connected to the bending section (641). The width of the bending section (641) is less than the width of the gripping section (643) and the width of the connecting piece (623), such that the weight of a valve clamping device (100) can be reduced, and the pulling force to pull the two gripping arms (64) up to a central axis can also be reduced. Also provided is the valve clamping device (100) provided with the tissue gripper (60).

Abstract: Disclosed are a valve clamping device and a valve clamping system, wherein the valve clamping device comprises: a supporting portion provided along an axial direction; a hollow adjusting portion, wherein at least part of the supporting portion is provided in the adjusting portion, one end of the adjusting portion is sleeved outside the supporting portion, and the other end of the adjusting portion is movable with respect to the supporting portion; a clamping portion surrounding an outside of the adjusting portion; and a driving portion connected to the clamping portion to drive the clamping portion to be close to or away from the adjusting portion.

Abstract: The present disclosure provides a heart valve repair method, comprising: advancing a distal end of a suture implanting apparatus from an outside of a body through a transapical approach into a left ventricle or a right ventricle of a heart; holding each leaflet of a heart valve with the distal end of the suture implanting apparatus; implanting at least one suture into the leaflet; withdrawing the suture implanting apparatus from the body; advancing a distal end of a suture locking apparatus from the outside of a body through a transapical approach into the corresponding left ventricle or the corresponding right ventricle; using the suture locking apparatus to lock the plurality of sutures; and withdrawing the suture locking apparatus from the body. The heart valve repair method has a simple surgical procedure, a low degree of patient trauma, and a high success rate of surgery.

Abstract: Disclosed is a balloon catheter (1000) with a drug coating. The balloon catheter comprises a pushing catheter (310), at least one expandable first balloon (100) located at a distal end of the pushing catheter (310), and a pre-expansion mechanism. The first balloon (100) is fixedly arranged on the pushing catheter (310). The pre-expansion mechanism (200) comprises an expansion sleeve (220) and a connector (240). The expansion sleeve (220) is used for housing the first balloon (100) before the first balloon (100) is not expanded and when same is pre-expanded. The connector (240) is connected to the expansion sleeve (220) and axially moves with respect to the pushing catheter (310) after the first balloon (100) is pre-expanded, so that the first balloon (100) is exposed outside the expansion sleeve (220).

Abstract: The present disclosure provides a heart valve repair method, comprising: advancing a distal end of a suture implanting apparatus from an outside of a body through a transapical approach into a left ventricle or a right ventricle of a heart; holding each leaflet of a heart valve with the distal end of the suture implanting apparatus; implanting at least one suture into the leaflet; withdrawing the suture implanting apparatus from the body; advancing a distal end of a suture locking apparatus from the outside of a body through a transapical approach into the corresponding left ventricle or the corresponding right ventricle; using the suture locking apparatus to lock the plurality of sutures; and withdrawing the suture locking apparatus from the body. The heart valve repair method has a simple surgical procedure, a low degree of patient trauma, and a high success rate of surgery.

Abstract: The present disclosure provides a method for contracting heart tissue using a transcatheter annuloplasty system. The system includes a plurality of anchoring components, a flexible tightening string and a flexible delivery member. The tightening string is coupled with a first anchoring component and the delivery member. The method includes: implanting the first anchoring component into the heart tissue, the tightening string entering a body along with the first anchoring component, and a proximal end of the delivery member extending outside the body; delivering each of remaining anchoring components, along the delivery member, to the tightening string and implanting it into the heart tissue; and tightening the tightening string. Therefore, after the plurality of anchoring components are implanted at different positions, along a circumferential direction of the mitral annulus, the tightening string is tightened to adjust a spacing of the anchoring components so as to contract the heart tissue.

Abstract: A forward-pushing for releasing suture locking device configured to fix a suture in a locking pin includes a collet and a thrust rod assembly sleeved outside the collet. The thrust rod assembly includes a thrust rod. A recessed portion is arranged at the thrust rod, and a protruding portion corresponding to the recessed portion is arranged at the collet. In a process that the thrust rod continuously moves distally in an axial direction, the thrust rod first pushes against a gradually raised side of the protruded portion, so as to allow the collet to deform to compress the locking pin, and allow the locking pin compressed by the collet to deform and fix the suture; and then the protruding portion is gradually accommodated in the recessed portion, so that at least part of deformations of the collet is restored to release the locking pin.