Endovascular delivery system for aortic heart valve prosthesis

FIELD: medicine.

SUBSTANCE: endovascular delivery system for the aortic heart valve prosthesis consists of the working tube with a handle with controls at the proximal end, and a conical tip and a protective cover at the distal end, the cover contains an inner holder to accommodate the aortic heart valve prosthesis. The conical tip comprises three longitudinal slots, each having a fastener in the form of a hollow tube. The radial groove formed at the tip, has an annular spring configured to compress the fasteners. The spring is fixed with at least three brackets located between the longitudinal slots; the working tube wall has at least three longitudinal channels, each containing a wire to connect the working tube and fastener with the aortic heart valve prosthesis frame. One end of each wire is fixed by a control and the other is intended for fixation of the aortic heart valve prosthesis frame fastener. At the proximal end of each clamp an U-shaped slot is made for release connection of wire stretched within the retainer with the aortic heart valve prosthesis frame fastener, the fasteners are fixed annularly inside the conical tip body.

EFFECT: provision of controlled aortic valve prosthesis implantation.

2 cl, 6 dwg

 



 

Same patents:

FIELD: medicine.

SUBSTANCE: method involves sampling and washing native tissues and preserving them for 2-21 days in mixed ethylene glycol diglycyl ester and oligoepoxy compound with the branched structure of a hydrocarbon chain prepared in a 0.05-0.2 M phosphate buffer; that is followed by heparinisation of the biological tissue surface at 20-40C for 2-14 hours.

EFFECT: method enables improving viscoelastic and thromboresistant characteristics of the biological prosthesis, increasing the sterilising effect and biomaterial resistance to calcification.

3 cl, 3 dwg, 4 tbl, 3 ex

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine. A module prosthetic valve assembly comprises a number of modules and a self-assembling element each of which has a delivery configuration for being mounted in the delivery device. The number of modules comprises a valve assembly having an unfolded, unassembled delivery configuration. The self-assembling element has the direct delivery configuration parallel to a long axis of the above delivery device, and the pre-set working configuration. The valve assembly is designed to fold and assembly from the delivery configuration into the working configuration by the above self-assembling element after the above delivery device is placed into the body. There are disclosed a prosthetic valve assembly system in the body, a method for folding the module valve delivery device, the self-assembling element, a method for assembling the module valve assembly and a percutaneous module prosthetic valve assembly.

EFFECT: group of inventions provides higher safety of valve replacement procedure.

34 cl, 10 dwg

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine. A medical device for enhancing intracardiac blood circulation in a patient's heart by supporting the pumping action of the left ventricle comprises a displacement unit configured to provide the controlled support of the mitral valve face displacement along a long axis of the left ventricle and to be integrated into the patient's heart and to contact the above mitral valve to push and/or pull the mitral valve so that the mitral valve is movable in the displacement unit by means of reciprocation during systole along the above long axis to an apex of the heart, and during diastole along the above long axis from the above apex. There are disclosed a set for enhancing blood circulation, a method for the medical device delivery, a method and a system for improving the pumping action of the left ventricle, and a computer-readable data carrier for implementing the method for improving the pumping function.

EFFECT: inventions provide enhancing the cardiac function along the long axis by the displacement of the mitral valve up and down.

47 cl, 31 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment and can be used for the replacement of involved natural human cardiac valves. A frame for a biological cardiac valve prosthesis comprises a tubular insert 2, which bears a flexible element 5 having flexible supports 6, each of which comprises two flexible beams 7. Each flexible beam 7 is provided with a loop-shaped element 16 positioned on heads 8 of the flexible beams 7 and coupling support stands 9 and bridges 13 mounted between two support stands 9 of the flexible element 5 from different flexible supports 6; each loop-shaped element 16 is provided with a seating surface 17 facing the vertical plane 11 passing through the central axis 12 of the frame; the support stands are mounted in relation to the above vertical plane 11; the seating surface 17 lies in a plane extending in parallel through the central axis of the frame with the support stands 9 being mounted symmetrically in relation to the vertical plane 11. The seating surfaces 17 of two flexible beams 7 from the same flexible support 6 are configured symmetrically in relation to the plane 11 passing through the central axis 12 of the frame.

EFFECT: increasing the reliability by reducing a rate of potential cusp cutting-through by fastening threads.

3 cl, 5 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical ultrasonic diagnostic systems, namely to ultrasonic systems for medical device arrangement and three-dimensional pointing. The ultrasonic system for operation planning with the implanted device comprises a scalable anatomical ultrasonic image source in a body, wherein there can be mounted the implanted device, sizer scalable image source forming a virtual sizer, which specifies a size of the implanted device, a scaling unit configured to provide displaying of the anatomical ultrasonic image and visual sizer in the single scale, display and user's control organ applicable for manipulating a positioning of the virtual sizer on the display in relation to the anatomical structure in the single-scaled anatomical ultrasonic image. The user's control unit is configured to check the virtual sizer adjustment to the anatomical structure in accordance with selections showing overlaying regions between the virtual sizer and anatomical structure. Operation of the ultrasonic system implements a method for sizing the implanted device fitted for the anatomical body structure.

EFFECT: using invention enables sizing implanted device without approaching implantation site.

14 cl, 12 dwg

FIELD: medicine.

SUBSTANCE: invention refers to cardiovascular surgery and aims at replacing the involved natural mitral valves during cardiac surgeries. The mitral valve prosthesis comprises a frame with a supporting base and attached well-rounded poles, a folding lock element of a polymer material or biological tissue, and a suture cuff. The supporting base in a plane perpendicular to the central axis of the valve prosthesis is kidney-shaped, and in a vertical plane, it is saddle-shaped by bending a portion of the supporting base in the vertical plane towards the direct blood flow through the valve. The suture cuff is attached along a lower edge of the supporting base facing the direct blood flow after the saddle and kidney shape.

EFFECT: increasing the reliability and durability of the prosthesis by reducing loads on the elements that is provided by the special shape of the supporting base of the prosthesis.

5 cl, 4 dwg

FIELD: medicine.

SUBSTANCE: prosthesis represents a frame with a supporting base of an out-of-round cross section and smoothly rounded racks and comprises a flap obturator made of a polymer material or a biological tissue and a suture cuff. A support base of the frame in a plane perpendicular to a central axis of the prosthesis; it has a drop shape fitting the shape of a natural fibrous ring of the tricuspid valve. The flap obturator comprises equivalent front, back and septal leaflets, and a blood upstream edge of the support base within the front and back leaflets is curved towards the blood flow through the valve.

EFFECT: higher reliability by reducing loads and eliminating a risk of suture cutting.

4 cl, 5 dwg

FIELD: medicine.

SUBSTANCE: group of inventions refers to cardiology. A device for intensifying intracardiac blood circulation in a patient's heart configured to intensify the intracardiac blood circulation in the patient's heart by a continuous support of the left ventricular pumping action, comprises the first fixing unit implanted into the cardiac vessel of the above heart along the mitral valve, such as the venous cardiac vessel containing the coronary sinus, the great cardiac vein, an anterior interventricular vein or a branch thereof. An effort generation unit is configured to be connected to the first fixing unit. The effort generation unit is configured to generate an effort for supporting the above left ventricular pumping action depending on the cardiac cycle. When implanted, the first fixing unit perceives the above effort so that to provide the supported migration of the cardiac vessel, and thereby of the above mitral valve in the plane of the mitral valve towards and/or from the above heart apex. There are disclosed a kit for improving or intensifying the pumping action, a method for delivering the device for intracardiac blood circulation, a method for intensifying the intracardiac blood circulation, a computer-readable data carrier for implementing the method.

EFFECT: technical effect consists in supporting the left ventricular function by the minimally invasive implantation.

37 cl, 25 dwg

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine and aims at recovering cardiac valves. A medical device for improving the cardiac valve operation comprising the valve tissue integrating a fibrous ring and a number of leaflets, comprises the first support loop configured to adjoin the first side of the cardiac valve, and the first flange assembly connected to the above first support loop and extends around the periphery of the first support loop. The first flange assembly comprises the first reinforcing element. Disclosed are kits for improving the cardiac valve operation.

EFFECT: providing the simple and reliable fixation to the fibrous ring of the cardiac valve.

21 cl, 17 dwg

FIELD: medicine.

SUBSTANCE: invention relates to method of automatic creation of reference points for replacement of heart valve and to device of examination for automatic creation of reference points for heart valve replacement. Examination device for automatic creation of reference points for heart valve replacement contains: device for obtaining X-ray images, calculation unit and display device. Device for obtaining X-ray images is made with possibility of obtaining X-ray image of the area of orifice of cardiac vessel with introduced contrast substance and obtaining at least one current roentgenoscopic image of the area of vessel orifice with replacement valve, inserted into vessel. Calculation unit is made with possibility of identifying data of information about vessel within obtained image, modelling presentation of vessel orifice with application of data of information about vessel and formation of combined image by combination of model of vessel orifice presentation with roentgenoscopic image. Display unit is made with possibility of displaying combined image.

EFFECT: application of invention makes it possible to provide cardiologist and surgeon with the better information during PHV implantation.

14 cl, 7 dwg

FIELD: medical engineering.

SUBSTANCE: device is designed as flexible hose segment of flat cross-section enveloping base member manufactured as circular or oval ring. The opposite end is left free. The valve has an additional member like supporting plate (contour frame or contour loop) rigidly fixed on the base member and embraced with free end of the flexible hose. To achieve better conditions for blood flow to wash working member surface, the member is perforated in zone of its attachment to the base member. To achieve better biocompatibility conditions, valve member is manufactured from natural patient blood vessel.

EFFECT: high operation reliability and reduced hemolysis.

4 cl, 2 dwg

FIELD: medical engineering.

SUBSTANCE: device has two leaflets. The leaflets are mounted on finger member allowing rotation about artery axle and have working ends and shank. The working ends have fitting surfaces restricted with thrusting and holding ribs. A holding rib has internal and external end surface. The external end surface of holding rib of each leaflet has protrusions having centering surfaces manufactured as portions of the same revolution surface having diameter of Dc. Revolution surface axis coincides with the central axis of the holder.

EFFECT: excluded valve displacement relative to fibrous ring; reduced risk of canal dysfunction; improved long-term prosthetic operation results.

3cl, 4 dwg

FIELD: medical engineering.

SUBSTANCE: device has body having external and end face surfaces and envelope box cuff. Locking member is mounted in the device body. The locking member is connected to the device body by means of rotation unit of hinge type. External surface of the device body has ring-shaped protrusion having fitting and supporting surfaces. The envelope box is collapsible and detachable. It has bushing and ring having smooth or threaded connection between them. The device body has two external surface areas free of the cuff adjacent to end face surfaces of the body.

EFFECT: high reliability and long service life.

4 cl, 3 dwg

FIELD: medical engineering.

SUBSTANCE: device has ring-shaped body, fixing members 3 manufactured as protrusions and rotatable cusps mounted in the ring-shaped body. Slots are available on lateral surfaces of body fixing members mainly arranged along central axis of the device body. Protrusions are available on lateral surfaces of slots produced on lateral surfaces of cusp. The protrusions are engageable with slots in device body.

EFFECT: higher thrombus formation resistance.

6 cl, 5 dwg

FIELD: medical engineering.

SUBSTANCE: device has cylindrical body and locking disk member mounted therein with rotation about axis displaced relative to diameter being in parallel to it. Disk member center of gravity is deviated relative to its geometrical center and set so that its rotation axis passes through the center of gravity and the member itself is engageable with opposite device body ends in closed state. The device body has locking disk member stroke stopper manufactured as prominence located between the locking disk member rotation axis and device body diameter arranged in parallel to the rotation axis.

EFFECT: enhanced effectiveness of operation; reduced force magnitude needed for opening the locking member; maximum effective cross-section in open position.

6 cl, 1 dwg

FIELD: medical engineering.

SUBSTANCE: device has connection member manufactured from absorbable material connected to thread on one of its ends. The thread transmits longitudinal pulling force for introducing the connection member into valve ring tissue to set up it therein. The second device embodiment has different needle design. The needle is introduced into endomyocardium of valve ring and brought through a part of the opening perimeter. The needle is brought out and the connection member is introduced into endomyocardium by means of the thread in a way that free end of the connection member is to be at introduction point. The connection member is fixed in the endomyocardium and brought through the ring to the position characterized in that the other end is located in removal point and exits in this way from the endomyocardium. The second end is fixed.

EFFECT: normalized valve ring growth in children.

29 cl, 9 dwg

FIELD: medicine.

SUBSTANCE: method involves arranging testee and additional valves in system circulation canal with parameters of working liquid flow having physiological values. The working liquid has blood viscosity. Hemolysis degree is determined from changed elastic stress relaxation time in working liquid samples taken in course of the experiment. Preliminary tests are carried out with several additional valves of different hemolytic properties under working liquid flow parameters being fixed. Total hemolysis degree is measured in various combinations of mounted additional valves in circulation system canal. After having solved a linear equations system, hemolysis degree values as contributions caused by circulation system and additional valves. Hemolysis degree of a valve under test tested in combination with one of additional valves is calculated from a formula ΓNΣ0add, where ΓΣ is the total hemolysis degree, Γ0 is the hemolysis degree contributed by circulation system, Γadd is the hemolysis degree of additional valve used.

EFFECT: high accuracy in determining hemolysis degree.

1 dwg

FIELD: medicine, cardiosurgery.

SUBSTANCE: the method deals with valvular reprosthetics. After dissecting a prosthesis and treating infectious foci with antiseptics it is necessary to implant a carcass xenoprosthesis faced with epoxy-treated xenopericardium. At implanting xenoprosthesis into mitral position it should be fixed in position of fibrous ring by separate P-shaped sutures, one part of which could be upon interlayers. At implanting xenoprosthesis into tricuspid position it should be fixed in position of fibrous ring, moreover, septal valve should be fixed with separate P-shaped sutures, anterior valve - in the middle with a single P-shaped suture, The rest length of xenoprosthesis should be fixed with uninterrupted blanket suture.

EFFECT: decreased chance for prosthetic infectioning.

2 ex

FIELD: medical engineering.

SUBSTANCE: device has working member manufactured as viscoelastic ring-shaped corrugation having blank wall, tightly embracing a base ring with passage orifice of round or oval shape. Movable part of the working member is represented with one or several cusps belonging to the blank wall of the viscoelastic corrugation. The cusps have thickenings in diametric or radial direction and/or supporting pins transecting the passage opening to prevent them from being drawn by pressure into passage opening of the base ring.

EFFECT: simplified valve design.

7 cl, 10 dwg

FIELD: medical engineering.

SUBSTANCE: device has grooves, bevel or ledge on each cusp closure surface to guide limited reverse blood flow directly to articulated members and casing and cusp surfaces adjacent thereto. The cusps allow forced rotation about casing axis due to limited reverse blood flow tangentially arriving when having the cusps closed, to make blood volume whirl about the central axis of the casing when entering the prosthesis and opening cusps.

EFFECT: high resistance to thrombus formation; prolonged service life; high reliability; reduced load applied to patient heart.

3 cl, 10 dwg

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