17 results about "Pulmonary valve" patented technology

The invention provides a stepped ventricle auxiliary circulating pump device, relates to the technical field of heart blood pumps, and provides a structure that a heart blood pump is arranged in a heart chamber and below an aortic valve or a pulmonary valve, and a stepped motor and an axial flow channel are designed on the basis, so that a blood flow channel is formed between the motor and the axial flow channel; the blocking influence of the size of the motor above the aortic valve or the pulmonary valve on the blood circulation process can be effectively avoided, and the amount of blood pumped out of the aortic valve or the pulmonary valve is effectively increased.

The invention provides a close-range valve-pump integrated ventricular auxiliary circulating pump device, and relates to the technical field of heart blood pumps, the close-range valve-pump integrated ventricular auxiliary circulating pump device comprises a ventricular auxiliary circulating pump device, the ventricular auxiliary circulating pump device is connected in series with a heart artery tube, and the ventricular auxiliary circulating pump device is arranged in a heart chamber and below an aortic valve or a pulmonary artery valve; the ventricular auxiliary circulating pump device comprises an axial flow channel and a power part located in the axial flow channel. The upper end of the axial flow channel is provided with a radially outward turnup part, the turnup part faces the lower surface of the aortic valve or the pulmonary valve and is sewn at the aortic root or the pulmonary artery root, the turnup part serves as a mounting plane, and the power part is provided with an impeller rotating in the axial direction of the axial flow channel. The plane of the outlet of the impeller and the plane where the flanging part is located are the same plane, and direct adjacent maximum pressure of the ventricular auxiliary circulating pump device is provided for the aortic valve or the pulmonary valve.

The present invention provides a close-range valve pump integrated ventricular assist circulation pump device, which relates to the field of cardiac blood pump technology and includes: a ventricular assist circulation pump device, which is connected in series with the cardiac artery tube, and the ventricular assist circulation pump device is arranged in the ventricle and below the aortic valve or the pulmonary valve; the ventricular assist circulation pump device includes an axial flow channel and a power unit located in the axial flow channel; the upper end of the axial flow channel is provided with a radially outward flange portion, the flange portion faces the lower surface of the aortic valve or the pulmonary valve and is sutured to the aortic root or the pulmonary artery root, the flange portion serves as an installation plane, the power unit has an impeller rotating in the axial direction of the axial flow channel, and the impeller outlet plane is in the same plane as the plane where the flange portion is located, providing the ventricular assist circulation pump device with a maximum pressure directly adjacent to the aortic valve or the pulmonary valve.

An anti-thrombotic and endothelialization-enhanced bioprosthetic valve material and preparation thereof are provided. The preparation method includes the following steps: immersing a glutaraldehyde cross-linked bioprosthetic valve material in functional reagent solution for 1-24 h, adjusting pH value of the solution to 3-8, removing it from solution and cleaning with deionized water. The new valve material of the present invention can effectively reduce the toxicity and side effects of the existing glutaraldehyde cross-linked bioprosthetic valve material and effectively reduce thrombosis, along with enhanced endothelialization. The material prepared can be used for pulmonary valve, aortic valve, mitral valve, tricuspid valve, venous valve and other cardiovascular implantable medical devices.

The present application provides a method inserting a S-Shape catheter to pulmonary artery of a person in need. Generally, the S-Shape catheter can be introduced through femoral vein or inferior vena cava; and then advanced through right atrium, right ventricle, and right ventricular outflow tract; and then advanced to the pulmonary artery through pulmonary valve.

Provided herein is a transcatheter aortic or pulmonary valve implant assembly that includes a bioresorbable docking station. The transcatheter valve implant assembly further includes a bioresorbable stent frame structure and a prosthetic valve that is connected with the docking station. This transcatheter valve implant assembly can be implanted adjacent to the aortic valve or pulmonary valve. In some embodiments, the transcatheter valve implant assembly includes a ventricular assist device that is releasably connectable with the bioresorbable docking station and the bioresorbable stent frame structure.

The present invention provides a valve material having synergistic anti-coagulation and anti-calcification functions and a preparation method therefor. The preparation method comprises the following steps: performing glutaraldehyde cross-linking treatment on an animal-derived biological valve material; immersing the treated valve material in a blocking solution containing an amine compound for 0.5-6 h, thereby blocking the remaining aldehyde groups after glutaraldehyde cross-linking; then placing the valve material into a reaction solution containing an anticoagulant and a cross-linking agent, and performing cross-linking treatment for 6-24 h at 4° C.-37° C.; and finally washing and obtaining the valve material, and storing the valve material in a mixed solvent of glutaraldehyde or isopropyl alcohol / glycerol. The method can effectively solve the problem of calcification and thrombosis caused by residual aldehyde groups in a valve material prepared by the existing method. The valve material prepared by the present method can be used as a valve material required for aortic valve, pulmonary valve, venous valve, mitral valve and tricuspid valve replacement.

A transcatheter valve implant assembly has a ventricular assist device, a prosthetic valve, a stent frame structure, and a docking station, and is implanted at an aortic or a pulmonary valve. During implantation, the native valve leaflets of the respective valve at the implantation site are engaged with the prosthetic valve and / or the stent frame structure while the stent frame structure is connected to the docking station with the prosthetic valve adjacent to the proximal end of the stent frame structure. The ventricular assist device is inserted into the interior the stent frame structure with an inlet of ventricular assist device positioned in the respective ventricle associated with the implantation site and the outlet of the ventricular assist device positioned to discharge into the respective blood vessel associated with the implantation site. The ventricular assist device is releasably connected with the stent frame structure and the docking station.

The present invention provides a ventricular assist circulation pump device with a lead wire passing through a suture body, which relates to the technical field of cardiac blood pumps. A cardiac blood pump is connected in series with a cardiac artery tube, and the cardiac blood pump is suspended in the ventricle and below the aortic valve or the pulmonary valve by suturing between a flange portion and the root of the aorta or the pulmonary artery. On this basis, the lead wire of the cardiac blood pump is led to the suture body, so that the lead wire passes through the suture body and is led out to the outer wall of the cardiac artery tube. This is more advantageous for the convenience of suturing operation, the safety of subsequent use, and the suture area, and can reduce damage to the cardiac artery tube.

The invention provides a ventricle auxiliary circulating pump device with a leading-out wire passing through a suture body, and relates to the technical field of heart blood pumps. A heart blood pump connected with a heart artery tube in series is adopted, and the heart blood pump is hoisted in the ventricle and below an aortic valve or a pulmonary valve through suture between a flanging part and the root of an aorta or a pulmonary artery; on the basis, the leading-out wire of the heart blood pump is led to the suture body, penetrates through the suture body and is led to the outer wall of the heart arterial duct, convenience of suture operation, subsequent use safety and suture area are better facilitated, and damage to the heart arterial duct can be reduced.

The present invention discloses a heart valve replacement prosthesis and a stent thereof, belonging to the field of heart valve replacement. The stent comprises a main beam suture frame connected end to end in a sinusoidal wave pattern, an upper hook arranged in the peak of the sinusoidal wave, and a lower hook arranged in the trough of the sinusoidal wave, wherein the hooking directions of the upper hook and the lower hook are opposite. A lower support frame and an upper support frame are also provided in the peak and trough of the sinusoidal wave. The present invention forms a cylindrical basic frame by setting a main beam suture frame connected end to end in a sinusoidal wave pattern, and by setting the upper and lower hooks with opposite hooking directions, it can directly act on the aortic valve or pulmonary valve with calcified lesions, and can also be fixed in the stent of the original heart valve replacement prosthesis when not used for the first time, completing the secondary replacement of the heart valve, solving the problem that the existing heart valve cannot be repaired after the first replacement, and greatly extending the life of the heart valve replacement prosthesis. The stent has strong rigidity, good shape retention and high yield.

The present invention provides an external rotor ventricular assist circulation pump device, which relates to the technical field of cardiac blood pumps. It proposes a structure in which the motor of the cardiac blood pump is arranged in the ventricle and below the aortic valve or the pulmonary valve. On this basis, the motor is embedded in the blood pump housing, and the blood in the blood pump housing is rotated by the external rotor of the motor. This ensures that the present invention will not cause damage to the ventricle while avoiding the obstruction of the blood circulation process caused by the size of the motor itself. In addition, the motor is embedded in the blood pump housing through fixed brackets at both ends, which not only satisfies the blood rotation effect, but also further reduces the volume of the blood pump body, making it easier to implant in the human body.

The present invention provides a stepped ventricular assist circulation pump device, which relates to the technical field of cardiac blood pumps. It proposes a structure in which the cardiac blood pump is arranged in the ventricle and below the aortic valve or the pulmonary valve, and on this basis, a stepped motor and an axial flow channel are designed to form a blood flow channel between the motor and the axial flow channel, which can effectively avoid the size of the motor itself from blocking the blood circulation process above the aortic valve or the pulmonary valve, and effectively increase the amount of blood pumped out from the aortic valve or the pulmonary valve.

The present disclosure describes a prosthetic surgical heart valve for smaller patients, particularly pediatric patients. The heart valve is smaller and more flexible, and can incrementally expand to accommodate growth of the patient. The heart valves are particularly useful at pulmonary valve locations where opening and closing pressures are much lower than at other native valve locations. The heart valves are formed from a thinner and more flexible material than the aortic or mitral valve, which enables them to be opened and closed more efficiently when subjected to lower pulmonary blood flow pressures. Incremental expansion of the heart valve is achieved by a stiffener coupled to plastic expansion of the valve member.

A system and method for non-invasive identification of fiducials points of the events of the cardiac cycle, including but not limited to mitral valve closing (MC), aortic value opening (AO), aortic value closing (AC), mitral valve opening (MO), rapid systolic ejection (RE), rapid diastolic filling (RF), atrial systole (AS), isovolumic movement (IM), and isovolumic contraction (IC); additionally tricuspid valve closing (TC), pulmonic value opening (PO), tricuspid value closing (TC), pulmonic valve opening (MO). The system includes a device with multiple accelerometers, physiological electrical sensor, microcontroller for measuring and converting analog to digital signals and time deterministic synchronous sensor capture. The method includes seismocardiograph waveform fiducial detectors for peaks and troughs, phase detectors for mechanical and electrical signals, a heartbeat onset detector and one or more microprocessors to perform signal processing operations. Serving as a powerful, non-invasive system or method for quantifying myocardial performance.

Catheterization methods and apparatuses allow sensing of pressures inside the heart and for removing air from catheters. A delivery system can use the same components that are used to deliver a valve repair or replacement device to measure the pressure in the atrium or other heart chamber. A pressure sensor can be included in one of the catheters of the delivery system or pressure can be sensed through the same port that is used to flush a catheter. The delivery system can be inserted into the heart, delivering the valve repair or replacement device to the native valve, such as the mitral valve, the tricuspid valve, the aortic valve, or the pulmonary valve.

A heart valve repair apparatus is disclosed. The apparatus has a radially expandable ring having a first ring component connectable to a second ring component by a pair of securing members. The first and second ring components may be slideable through the pair of securing members, thereby radially adjusting the ring between a first dimension configuration and a second dimension configuration. In some example applications, the ring is dimensioned to be implanted into any one of the heart valves, the aortic valve, mitral valve, pulmonary valve and tricuspid valve. The ring may in some embodiments be used as an annuloplasty ring. The annuloplasty ring may be used to reshape a valve annulus, in particular to restore the annulus' normal shape and / or size.