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692results about How to "Reduce reflux" patented technology
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Device and method for treatment of heart valve regurgitation
In one embodiment, the present invention provides a prosthesis that can be implanted within a heart to at least partially block gaps that may be present between the two mitral valve leaflets. In one preferred embodiment, the prosthesis includes an anchoring ring that expands within the left atrium to anchor the prosthesis and a pocket member fixed to the anchoring ring. The pocket member is positioned within the mitral valve, between the leaflets so that an open end of the pocket member is positioned within the left ventricle. When the mitral valve is open, blood flows past the pocket member, maintaining the pocket member in a collapsed state. When the mitral valve closes, the backpressure of the blood pushes into the pocket member, expanding the pocket member to an inflated shape. The mitral valve leaflets contact the expanded pocket member, allowing the prosthesis to block at least a portion of the openings between the leaflets, thereby minimizing regurgitated blood flow into the left atrium.
Owner:EDWARDS LIFESCIENCES AG
Proppants with fiber reinforced resin coatings
InactiveUS6528157B1High compressive strengthWithstanding stressCeramic layered productsDrilling compositionParticulatesResin coating
Coated particles made of particulate substrates having a coating of resin and fibrous material are provided for use in subterranean formations. The coated substrate particles are proppants useful to prop open subterranean formation fractures. The coated substrate particles are also useful for sand control, that is, acting as a filter or screen to prevent backwards flow of sand, other proppants or subterranean formation particles. Methods of making the coated particles are also disclosed.
Owner:HEXION INC
Cardiac device and methods of use thereof
InactiveUS20070161846A1Reduced elastic recoilShorten speedHeart valvesInternal electrodesCardiac deviceDiastolic function
Devices and methods are described herein which are directed to the treatment of a patient's heart having, or one which is susceptible to heart failure, to improve diastolic function.
Owner:EDWARDS LIFESCIENCES CORP
Systems and methods for placing a coapting member between valvular leaflets
ActiveUS20130325110A1Function increaseReduce refluxBall valvesTRICUSPID VALVE REPAIRHeart valve function
The present invention relates to devices and methods for improving the function of a defective heart valve, and particularly for reducing regurgitation through an atrioventricular heart valve—i.e., the mitral valve and the tricuspid valve. For a tricuspid repair, the device includes an anchor deployed in the tissue of the right ventricle, in an orifice opening to the right atrium, or anchored to the tricuspid valve. A flexible anchor rail connects to the anchor and a coaptation element on a catheter rides over the anchor rail. The catheter attaches to the proximal end of the coaptation element, and a locking mechanism fixes the position of the coaptation element relative to the anchor rail. Finally, there is a proximal anchoring feature to fix the proximal end of the coaptation catheter subcutaneously adjacent the subclavian vein. The coaptation element includes an inert covering and helps reduce regurgitation through contact with the valve leaflets.
Owner:EDWARDS LIFESCIENCES CORP
Device and method for treatment of heart valve regurgitation
In one embodiment, the present invention provides a prosthesis that can be implanted within a heart to at least partially block gaps that may be present between the two mitral valve leaflets. In one preferred embodiment, the prosthesis includes an anchoring ring that expands within the left atrium to anchor the prosthesis and a pocket member fixed to the anchoring ring. The pocket member is positioned within the mitral valve, between the leaflets so that an open end of the pocket member is positioned within the left ventricle. When the mitral valve is open, blood flows past the pocket member, maintaining the pocket member in a collapsed state. When the mitral valve closes, the backpressure of the blood pushes into the pocket member, expanding the pocket member to an inflated shape. The mitral valve leaflets contact the expanded pocket member, allowing the prosthesis to block at least a portion of the openings between the leaflets, thereby minimizing regurgitated blood flow into the left atrium.
Owner:EDWARDS LIFESCIENCES AG
Fixation devices for variation in engagement of tissue
InactiveUS20060089671A1Robust graspReduce refluxHeart valvesSurgical veterinaryBiomedical engineeringBlood vessel
Owner:EVALVE
Percutaneous annuloplasty system with anterior-posterior adjustment
ActiveUS20130226289A1Improve leaflet coaptationReduce refluxAnnuloplasty ringsTubular organ implantsCouplingCatheter
Apparatus, systems, and methods are provided for repairing heart valves through percutaneous transcatheter delivery and fixation of annuloplasty rings to heart valves. An annuloplasty ring includes an outer hollow body member including a plurality of regions. Adjacent regions cooperate with one another to change the body member from an elongate insertion geometry to an annular operable geometry. Adjacent regions are coupled by a biasing element or a stepped connector to allow expansion to an expanded state and contraction to a contracted state in the annular operable geometry. The annuloplasty ring also includes an internal anchor member located at least partially within the body member and having a plurality of anchors configured to attach the annuloplasty ring to tissue of a heart valve annulus. An angled ring closure lock allows coupling of the ends of an annuloplasty ring at an apex of a D-shape annular operable geometry.
Owner:VALCARE INC
Apparatus and method for reducing cardiac valve regurgitation
An apparatus for modifying the annulus of a cardiac valve to reduce regurgitation of blood flow through the cardiac valve includes a first annuloplasty ring having a first diameter and being disposed about a first aspect of the annulus of the cardiac valve. The apparatus also includes an elongate flexible body having proximal and distal end portions and being insertable into the first annuloplasty ring. The elongate flexible body has an adjustable mechanism for selectively adjusting the elongate flexible body from a first relaxed configuration to a second tensioned configuration. The first annuloplasty ring is adaptable to obtain a second smaller diameter and to cause the annulus of the cardiac valve to be modified and reduce regurgitation of blood flow through the cardiac valve when the elongate flexible body obtains the second tensioned configuration.
Owner:THE CLEVELAND CLINIC FOUND
Methods and devices for capturing and fixing leaflets in valve repair
InactiveUS20040225300A1Sturdy and effective fixationReduce refluxSuture equipmentsSurgical furnitureVALVE PORTValve leaflet
The present invention provides methods and devices for grasping, and optional repositioning and fixation of the valve leaflets to treat cardiac valve regurgitation, particularly mitral valve regurgitation. Such grasping will typically be atraumatic providing a number of benefits. For example, atraumatic grasping may allow repositioning of the devices relative to the leaflets and repositioning of the leaflets themselves without damage to the leaflets. However, in some cases it may be necessary or desired to include grasping which pierces or otherwise permanently affects the leaflets. In some of these cases, the grasping step includes fixation.
Owner:EVALVE
Fixation devices for variation in engagement of tissue
InactiveUS7811296B2Robust graspReduce refluxHeart valvesSurgical veterinaryBiomedical engineeringBlood vessel
Owner:EVALVE
Systems and methods for cardiac remodeling
ActiveUS20090234318A1Improve hemodynamic functionReduced dimensionSuture equipmentsBone implantHemodynamicsCombined use
Described herein are devices and methods for improving the hemodynamic function of a patient. In particular, a first device adapted to reshape an atrio-ventricular valve is used in combination with a second device configured to further alter the blood flow through the valve. The first device is typically an implant positioned in the subvalvular space of a ventricle. The second device may be an annuloplasty implant, a non-annulus valve apparatus implant, a ventriculoplasty implant, or a cardiac rhythm management device.
Owner:ANCORA HEART INC
Cardiac device and methods of use thereof
InactiveUS7674222B2Lower the volumeImprove pressure-volume relationshipHeart valvesInternal electrodesCardiac deviceHeart disease
Devices and methods are described herein which are directed to the treatment of a patient's heart having, or one which is susceptible to heart failure, to improve diastolic function.
Owner:EDWARDS LIFESCIENCES CORP
Self-expanding stent delivery system
InactiveUS20060074477A1Reduce refluxPromote exchangeStentsBlood vesselsInsertion stentDelivery system
A catheter for a self-expanding stent includes a proximal shaft with a longitudinal guide way along the length of the proximal shaft, a guide member for accessing a guidewire lumen defined by the proximal shaft and for drawing a guidewire into and out of the guidewire lumen along the proximal shaft. In one aspect, the catheter includes a proximal sliding mechanism coupled to a link, which is coupled to a distal outer shaft retaining a self-expanding stent in a compressed state. The sliding mechanism draws the link proximally, which draws the distal outer shaft proximally thereby allowing the stent to radially expand. In another aspect, the proximal sliding mechanism is coupled to a proximal shaft, which is coupled to the distal outer shaft. The sliding mechanism draws the proximal shaft proximally, which draws the distal outer shaft proximally to thereby allow the stent to radial expand.
Owner:MEDTRONIC VASCULAR INC
Annuloplasty Device Having Shape-Adjusting Tension Filaments
InactiveUS20100152845A1Reduce refluxAnnuloplasty ringsTubular organ implantsPosterior leafletVentricular contraction
A system for treating mitral valve regurgitation includes a tensioning device having a flexible annuloplasty ring, a plurality of anchoring members and a tensioning filament attached to the flexible ring. One embodiment of the invention includes a method for attaching a flexible annuloplasty ring to the annulus of a mitral valve, and adjusting the lengths of segments of the tension filament attached to the flexible ring in order to exert force vectors on the annulus, thereby reshaping the mitral valve annulus so that the anterior and posterior leaflets of the mitral valve close completely during ventricular contraction.
Owner:MEDTRONIC VASCULAR INC
Percutaneous Mitral Annulus Mini-Plication
InactiveUS20120296349A1Reduce refluxReducing circumferenceAnnuloplasty ringsSurgical staplesMitral annulusCatheter
A plication clip comprises a first end portion; a second end portion; and a central portion connecting the first end portion to the second end portion. The first end portion is curved toward the second end portion, and the second end portion is curved toward the first end portion. The central portion has a curvilinear profile such that when the clip is deployed, a shorter length between the first end portion and the second end portion is formed. A delivery catheter and methods for deploying the plication clip are also provided.
Owner:BOSTON SCI SCIMED INC
Apparatus and method for reducing cardiac valve regurgitation
Owner:THE CLEVELAND CLINIC FOUND
Devices and methods of repairing cardiac valves
Owner:VALFIX
Devices and methods for reducing cardiac valve regurgitation
The present invention relates to devices and methods for improving the function of a defective heart valve, and particularly for reducing regurgitation through an atrioventricular heart valve—i.e., the mitral valve and the tricuspid valve. For a tricuspid repair, the device includes an anchor deployed in the tissue of the right ventricle, in an orifice opening to the right atrium, or anchored to the tricuspid valve. A flexible anchor rail connects to the anchor and a coaptation element on a catheter rides over the anchor rail. The catheter attaches to the proximal end of the coaptation element, and a locking mechanism fixes the position of the coaptation element relative to the anchor rail. Finally, there is a proximal anchoring feature to fix the proximal end of the coaptation catheter subcutaneously adjacent the subclavian vein. The coaptation element includes an inert covering and helps reduce regurgitation through contact with the valve leaflets.
Owner:EDWARDS LIFESCIENCES CORP
Papillary Muscle Attachment for Left Ventricular Reduction
InactiveUS20090099410A1Reduce transventricular dimensionShorten the lengthSuture equipmentsDiagnosticsLeft ventricular sizePapillary muscle
The surgical implantation of a link, which may be in the form of a tether or a looped band, is proposed to connect and reduce the spacing between papillary muscles, to reduce dilation of the left ventricle. The implanted link thus improves heart function by reducing left ventricular failure.
Owner:MIAMI THE UNIV OF
Right ventricular papillary approximation
ActiveUS20150025553A1Alleviate functional tricuspid regurgitationReduce and eliminate compressionSuture equipmentsHeart valvesCardiology
Owner:THE BRIGHAM & WOMENS HOSPITAL INC +1
Systems and methods for cardiac remodeling
ActiveUS9125632B2Reduced dimensionReduce distanceSuture equipmentsAnnuloplasty ringsDevice implantHemodynamics
Owner:ANCORA HEART INC
Annuloplasty device having shape-adjusting tension filaments
ActiveUS7695510B2Reduce refluxBone implantAnnuloplasty ringsPosterior leafletVentricular contraction
A system for treating mitral valve regurgitation includes a tensioning device having a flexible annuloplasty ring, a plurality of anchoring members and a tensioning filament attached to the flexible ring. One embodiment of the invention includes a method for attaching a flexible annuloplasty ring to the annulus of a mitral valve, and adjusting the lengths of segments of the tension filament attached to the flexible ring in order to exert force vectors on the annulus, thereby reshaping the mitral valve annulus so that the anterior and posterior leaflets of the mitral valve close completely during ventricular contraction.
Owner:MEDTRONIC VASCULAR INC
Method of treating cardiomyopathy
InactiveUS20090082619A1Reduced dimensionShorten the lengthSuture equipmentsHeart valvesLeft ventricle wallTethered Cord
The surgical implantation of a link, which may be in the form of a tether or a looped band, is proposed to connect and reduce the spacing between facing walls of the left ventricle, to reduce dilation of the left ventricle. Decreasing the distance between the facing portions of the ventricle may also more appropriately align the chordal apparatus to decrease mitral regurgitation. The implanted link thus improves heart function by reducing left ventricular failure.
Owner:UNIV OF MIAMI
Systems for and methods of repair of atrioventricular valve regurgitation and reversing ventricular remodeling
InactiveUS7955247B2Eliminate atrioventricular valve regurgitationReduce deliveryAdditive manufacturing apparatusAnnuloplasty ringsLeft Ventricle RemodelingAtrioventricular valves
Methods of and devices for restoring the normal geometry of a heart, including but not limited to the structures supporting the atrioventricular valves. The techniques and devices described herein operate on the principle of displacement, both active and passive, to reverse cardiac remodeling and limit ischemic atrioventricular valve regurgitation.
Owner:THE GENERAL HOSPITAL CORP
Pump system
InactiveUS20060058732A1Shorter hospital staysLow costEndoscopesLaproscopesReciprocating motionTissue material
The invention relates to shielded reciprocating surgical file system for precisely removing bone and / or other tissue material. The system allows a user to maneuver the system and navigate into hard to access sites under a direct vision mechanism included in the system. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision bone and / or tissue removal. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.
Owner:SURGITECH
Drive apparatus
InactiveUS20060079919A1Shorter hospital staysLow costLaproscopesEndoscopesTissue materialDirect vision
The invention relates to shielded reciprocating surgical file system for precisely removing bone and / or other tissue material. The system allows a user to maneuver the system and navigate into hard to access sites under a direct vision mechanism included in the system. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision bone and / or tissue removal. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.
Owner:SURGITECH
Apparatus and methods for treating cardiac valve regurgitation
ActiveUS20160324639A1Reducing cardiac valve regurgitationOvercomes drawbackHeart valvesAnterior leafletPosterior leaflet
Apparatus and methods for repairing a cardiac valve, e.g., a mitral valve, are provided. The apparatus may include an expandable frame defining a curved structure in the expanded deployed state and a membrane coupled to the expandable frame. The membrane may curve around a native leaflet, e.g., the posterior leaflet, in a first plane and curve around another leaflet, e.g., the anterior leaflet, in an orthogonal plane. The membrane may be adapted to be suspended in the flow path of the cardiac valve such a first surface of the membrane abuts the native leaflet during systole and a second surface of the membrane abuts the other native leaflet during systole, thereby reducing cardiac valve regurgitation.
Owner:SEGUIN JACQUES
Proppant With Enhanced Interparticle Bonding
Polymer-coated proppants for hydraulic fracturing of oil and gas wells have an outer layer portion that comprises an organofunctional coupling agent, preferably an organofunctional silane coupling agent. The use of an organofunctional silane coupling agent in the outer layer portion of the proppant coating is preferably chosen to expose functionalities that will be reactive towards similar functionalities of adjacent and similarly coated proppants so that, when introduced downhole, these proppants form interparticle bonds at the temperatures and crack closure pressures found downhole in fractured strata. Such enhanced interparticle bonding helps keep the proppant in the fracture and maintains conductivity with reduced flowback. The invention also helps proppants designed for low temperature well to bond more firmly and allows proppants designed for high temperature wells to bond well even at lower downhole temperatures, thereby extending their useful range.
Owner:PREFERRED TECH
Method for delivering energy to tissue and apparatus
InactiveUS7074233B1Reduce refluxSurgical instruments using microwavesLight therapyEngineeringStomach
Disclosed is a method for delivering energy to a tissue. The method includes providing an apparatus which includes an energy delivery component and an inflatable member disposed around the energy delivery component. At a minimum, the inflatable member is constructed of a flexible inner wall and a flexible outer wall, which, taken together, enclose a cavity therebetween. The inflatable member is expanded such that the inflatable member's outer wall contacts the tissue's surface. Cooling fluid is disposed in the cavity, and energy is delivered to the energy delivery component so that at least a portion of the energy delivered to the energy delivery component passes through the inflatable member's inner wall, through the cooling fluid disposed in the cavity, through the inflatable member's outer wall, and into the tissue. Various apparatus suitable for use in delivering energy to tissues are also disclosed, as is a method for treating GERD or otherwise reducing reflux of a subject's stomach contents into the subject's esophagus.
Owner:BOARD OF RGT THE UNIV OF TEXAS SYST +1
Stent delivery system
The present invention is a device for delivering a self-expanding stent. The device has an inner shaft and an outer shaft moveable with respect to the inner shaft. The self expanding stent is received on the inner shaft adjacent its distal end. A tapered tip is located on the inner shaft distal end and it forms a smooth transition from the delivery device to the guide wire extending therethrough. A handle allows the practitioner to deploy the stent single handedly. The stent may have its segments in a first radial configuration for deliver of the stent or the stent may have a plurality of segments in a first radial configuration and a plurality of second segments in a second radial position.
Owner:MEDTRONIC VASCULAR INC
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