Modified heart valve construction

Abstract

The invention relates to a modified heart valve (A) that shortens the duration of the redo surgeries, causes less damage to the tissues of the heart, treats the resulting aortic pathologies in short surgical times and reduces the risk of death by eliminating the technical difficulties that arise in the first surgery, comprising leaves (10) which open parallel to each other to allow blood passage, an inner ring (20) which enables positioning of the leaves and replacement of the heart valve (A) in case of need, a lock (30) which secures the inner ring (20), an outer ring (40) which enables positioning of the heart valve (A) to the heart.

Description

[0001] DESCRIPTION MODIFIED HEART VALVE CONSTRUCTION

[0002] TECHNICAL FIELD

[0003] The object of the invention is to construct a modified heart valve that aims to shorten the duration of the recurrent redo surgeries, to cause less damage to the tissues of the heart, to easily use valve types during valve replacement, to treat aortic pathologies that occur after valve replacement in short surgical times and to reduce the risk of death by eliminating the technical difficulties that arise in the first surgery.

[0004] PRIOR ART

[0005] The human heart can be subject to various valvular diseases. These valvular diseases can leave a significant defect in the heart and, as a result, the patient’s natural valve may need to be replaced with an artificial valve. There are many known artificial valves and many known methods for implanting these artificial valves in humans.

[0006] Various surgical techniques can be used to repair a diseased or damaged valve. Thousands of patients are operated on every year for stenosis and other heart valve diseases and their defective native heart valves are replaced with prosthetic valves. Another less challenging method for the treatment of damaged valves is repair or reconfiguration, which is usually used for minimally calcified valves. A problem with surgical treatment is the significant risk to these chronic patients, leading to high morbidity and mortality rates associated with surgical repair.

[0007] When the native valve is replaced, the surgical implantation of the prosthetic valve typically requires open chest surgery, during which time the heart is stopped and the patient is placed on cardiopulmonary bypass (called a “heart-lung machine”).

[0008] In a common surgical procedure, the diseased native valve leaflets are removed and the prosthetic valve is sutured to the tissue surrounding the valve ring. Due to the trauma associated with the procedure and the accompanying extracorporeal blood circulation process, some patients do not survive the surgical procedure or die shortly afterwards. It is well known that the patient’s risk increases with increasing time required in extracorporeal circulation. Because of these risks, a significant number of patients with native valve damage are considered inoperable because their condition is too weak to withstand the procedure. According to some estimations, more than 50% of patients over 80 years of age with valve stenosis, who need valve replacement, cannot be operated on.

[0009] Current valves are implanted into the heart as a single component. In recurrent valve changes, the entire valve is removed and replaced with a new valve. This both prolongs the operation time and damages the valve ring. In addition, aortic vessel replacement may be required in the treatment of pathologies that develop in the aortic tissue after valve surgery. The surgical procedure can be complicated with fatal consequences. The valves in current use do not solve these problems.

[0010] Patent no. W02004089246A2 was developed to facilitate the suturing technique of sutures placed in the suture ring. It is not similar to the lock system in our invention. Replacement of the outer ring in redo surgeries is also performed in this invention. It does not offer the option of different types of valves and artificial veins with valves for valve replacements.

[0011] In our valve modification of our invention, the valve consisting of an outer and inner ring is divided into two components. During the initial surgery, the outer ring is first sutured to the annulus. The inner ring is inserted into the outer ring with an improved lock system. In this way, in redo cases, the valve replacement will be possible by changing only the inner ring, leaving the outer ring in place without damaging the annulus. The valve of our modified invention will both shorten the operation time and facilitate the use of products such as conduits with different valves (mechanical valve + artificial vein). In this way, in the aortic dissection (tear) and aortic aneurysms (bubble) that develop in patients who have previously undergone aortic valve replacement, with the valvular conduit integrated into the internal modulus, the valvular conduit replacement can be performed in short periods of time without the need for annulus sutures. The patients with a mechanical valve also have to take a blood thinner called coumadin for the rest of their lives. Thanks to our invention, the replacement of the mechanical prosthetic valve with a biological valve with modified valve models will be achieved in shorter periods of time, especially in redo valve surgeries to be performed in advanced ages. Modified biological prostheses will reduce the risk of bleeding by reducing the need or dose of coumadin (blood thinner).

[0012] As a result, due to the disadvantages encountered in the state of the art and described above, it is necessary to make the improvements in the relevant technical field.

[0013] OBJECT OF THE INVENTION

[0014] The general object of the invention is a modified heart valve construction that meets the above-mentioned requirements, eliminates all disadvantages and brings some additional advantages, and that particularly shortens the duration of the redo surgeries, causes less damage to the tissues of the heart, easily uses valve types during valve replacement, treats aortic pathologies that occur after valve replacement in short surgical times and reduces the risk of death by eliminating the technical difficulties that arise in the first surgery.

[0015] Due to the disadvantages existing in the prior art, the object of the invention is to solve all the described disadvantages.

[0016] The main object of the invention is to reduce the risk and rate of death in recurrent heart valve surgeries.

[0017] Another important object of the invention is to shorten redo surgery times, ensuring less damage to the tissues of the heart.

[0018] Another important object of the invention is to easily use valve types during valve replacement.

[0019] Another important object of the invention is to treat aortic pathologies that occur after valve replacement in short surgical times and to eliminate the technical difficulties that arise in the first surgery.

[0020] DESCRIPTION OF THE DRAWINGS

[0021] Fig .-1 is a perspective overview of the heart valve according to the invention, Fig. -2 is a perspective disassembled view of the heart valve according to the invention,

[0022] Fig. -3 is a perspective view of the holder for holding the heart valve during the suturing of the outer ring to the heart valve ring according to the invention,

[0023] Fig. -4 is a perspective representative view of the junction of the holder with outer ring according to the invention,

[0024] Fig. -5 is a perspective representative view of the inner ring holder according the invention,

[0025] Fig. -6 is a perspective representative view of the insertion of the inner component with the inner ring holder according to the invention,

[0026] Fig. -7 is a perspective representative view of the placement of the mechanical valve and graft in the inner ring according the invention,

[0027] Fig. -8 is a perspective view of a biological heart valve according to the invention,

[0028] Fig. -9 is a perspective view of the biological heart valve holder according to the invention.

[0029] REFERENCE NUMBERS

[0030] A. Heart valve

[0031] B. Artificial vein

[0032] C. Biological valve

[0033] C1. Biological valve holder

[0034] 10. Leaf 20. Inner ring

[0035] 21. Inner ring holder

[0036] 21.1. Arm

[0037] 30. Lock

[0038] 40. Outer ring

[0039] 41. Holder

[0040] DETAILED DESCRIPTION OF THE INVENTION

[0041] In Fig. 1 , there is a perspective overview of the heart valve (A) according to the invention,

[0042] In Fig. 2, there is a perspective disassembled view of the heart valve (A) according to the invention,

[0043] In Fig. 3, there is a perspective view of the holder for holding the heart valve (A) during the suturing of the outer ring (40) to the heart valve (A) ring according to the invention,

[0044] In Fig. 4, there is a perspective representative view of the junction of the holder (41) with outer ring (40) according to the invention,

[0045] In Fig. 5, there is a perspective representative view of the inner ring holder (21) according the invention,

[0046] In Fig. 6, there is a perspective representative view of the insertion of the inner component with the inner ring holder (21 ) according to the invention,

[0047] In Fig. 7, there is a perspective representative view of the placement of the mechanical heart valve (A) and graft (B) in the inner ring (20) according to the invention, In Fig. 8, there is a perspective view of a biological heart valve (C) according to the invention,

[0048] In Fig. 9, there is a perspective view of the biological heart valve holder (C1 ) according to the invention.

[0049] The invention relates to a modified heart valve (A) that shortens the duration of the redo surgeries, causes less damage to the tissues of the heart, treats the resulting aortic pathologies in short surgical times and reduces the risk of death by eliminating the technical difficulties that arise in the first surgery, comprising leaves (10) which open parallel to each other to allow blood passage, an inner ring (20) which enables positioning of the leaves and replacement of the heart valve (A) in case of need, a lock (30) which secures the inner ring (20), an outer ring (40) which enables positioning of the heart valve (A) to the heart.

[0050] The general object of the invention is a modified heart valve (A) construction that meets the above-mentioned requirements, eliminates all disadvantages and brings some additional advantages, and that particularly shortens the duration of the redo surgeries, causes less damage to the tissues of the heart, easily uses valve (A) types during valve (A) replacement, to treat aortic pathologies that occur after valve (A) replacement in short surgical times and reduces the risk of death by eliminating the technical difficulties that arise in the first surgery.

[0051] Due to the disadvantages existing in the prior art, the object of the invention is to solve all the described disadvantages.

[0052] The main object of the invention is to reduce the risk and rate of death in recurrent heart valve (A) surgeries.

[0053] The invention relates to a modified heart valve (A) that shortens the duration of the redo surgeries, causes less damage to the tissues of the heart, treats the resulting aortic pathologies in short surgical times and reduces the risk of death by eliminating the technical difficulties that arise in the first surgery, characterized in that it comprises: leaves (10) which open parallel to each other to allow blood passage, - an inner ring (20) which enables positioning of the leaves and replacement of the heart valve (A) in case of need,

[0054] - a lock (30) which secures the inner ring (20),

[0055] - an outer ring (40) which enables positioning of the heart valve (A) to the heart.

[0056] The inner ring (20) is characterized in that it comprises:

[0057] - an inner ring holder (21), which provides the rotation force necessary for its placement,

[0058] - a holder arm (21.1) for gripping thereof.

[0059] The heart valve (A) is characterized in that it comprises:

[0060] - a holder (41), which holds the heart valve during suturing of the outer ring (40) to the heart ring,

[0061] - a biological valve (C) to reduce the use of coumadin in patients with advanced age.

[0062] The biological valve (C) is characterized in that it comprises:

[0063] - a fabric ring, the biological valve (C) comprises a biological valve holder (C1) that grips the fabric part and allows its rotation.

Claims

CLAIMS1. A modified heart valve (A) that shortens the duration of the redo surgeries, causes less damage to the tissues of the heart, treats the resulting aortic pathologies in short surgical times and reduces the risk of death by eliminating the technical difficulties that arise in the first surgery, characterized in that it comprises:- leaves (10) which open parallel to each other to allow blood passage,- an inner ring (20) which enables positioning of the leaves and replacement of the heart valve (A) in case of need,- a lock (30) which secures the inner ring (20),- an outer ring (40) which enables positioning of the heart valve (A) to the heart.

2. A heart valve (A) according to claim 1 , characterized in that the inner ring (20) comprises:- an inner ring holder (21), which provides the rotation force necessary for its placement,3. A heart valve (A) according to claim 1 , characterized in that- it comprises a holder (41), which holds the heart valve during suturing of the outer ring (40) to the heart ring.

4. A heart valve (A) according to claim 1 , characterized in that- it comprises a holder (41), which holds the heart valve during suturing of the outer ring (40) to the heart ring.

5. A heart valve (A) according to claim 1 , characterized in that it comprises a biological valve (C) to reduce the use of coumadin in patients with advanced age.

6. An inner ring holder (21) according to claim 2, characterized in that the inner ring (20) comprises: - a holder arm (21.1 ) for gripping thereof.

7. A biological valve (C) according to claim 6, characterized in that- the biological valve (C) comprises a fabric ring.

8. A biological valve (C) according to claim 6, characterized in that- the biological valve (C) comprises a biological valve holder (C1) that grips the fabric part and allows its rotation.

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