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712 results about "Helical coil" patented technology
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Device and method for intralumenal anastomosis
An anastomosis device formed from a Shape Memory Alloy (SME) wire that is annealed into a tight coil (e.g., flat coil, helical coil, cylindrical coil) that is subsequently substantially straightened (e.g., straight, longitudinally stretched spring-like shape) for being constrained within an elongate member of an anastomosis introducer instrument. After positioning and holding two tissue walls of adjacent lumens into apposition with a distally presented grasper of the instrument, a piercing tip of the anastomosis device is dispensed and inserted through the tissue walls before being allowed to relax to its tight coil shape, thereby forming the anastomosis attachment. The anastomosis device is released from the anastomosis introducer instrument, such as by fully dispensing its proximal end. Thereby, efficient single lumen anastomosis of gastrointestinal, bilatory, or other vessels may be achieved with a minimum of laparoscopic punctures, or perhaps performed fully as an endoscopic procedure.
Owner:ETHICON ENDO SURGERY INC
Composite interference screw for attaching a graft ligament to a bone, and other apparatus for making attachments to bone
InactiveUS20080154314A1Promoting superior bone-to-ligament ingrowthShort-term strengthSuture equipmentsBone implantInterference screwsHelical coil
An interference screw comprising:an open helical coil having a proximal end and a distal end aligned along a longitudinal axis and defining an internal volume, with the internal volume communicating with the region exterior to the open helical coil through the spacing between the turns of the open helical coil; andat least one runner disposed within the internal volume and connected to multiple turns of the open helical coil.
Owner:HEALICOIL
Drug delivery catheters that attach to tissue and methods for their use
A drug delivery catheter suited for cardiac procedures including transmyocardial revascularization. The catheter includes a distal helical coil or other fixation and penetrating element, which can be operated from the proximal end of the catheter to engage and penetrate the myocardium. Once delivered to the inside of the heart, the catheter can be used to created several helical wounds in the myocardium, and also inject small doses of therapeutic agents to the wounds. The TMR accomplished by the procedure provides for large wound to penetration ratio, and limits the potential of perforating the heart wall.
Owner:BIOCARDIA
Bridged coil catheter support structure
A catheter includes a segment having a longitudinal axis. The segment has a helical coil extending coaxially with the longitudinal axis. The coil has a plurality of turns along a length of the axis. Adjacent turns have opposing surfaces joined by bridging members tying at least selected ones of the adjacent turns.
Owner:EV3 PERIPHERAL
Apparatus for delivering endoluminal prostheses and methods of making and using them
An apparatus for delivering a stent into a blood vessel includes a sheath having a rounded bullet-shaped distal portion including a plurality of flexible leaflets integrally molded thereto. The stent is disposed in its contracted condition within a lumen of the sheath proximate the distal portion. A bumper is slidably disposed within the lumen that includes a helical compression coil, a bumper element attached to the helical coil including a blunt distal edge for abutting the stent, and an extension element extending distally from the bumper element through the stent and between the leaflets to facilitate introducing the apparatus over a guidewire. The sheath is formed by inserting a bullet into a blunt-ended tube, and inserting the tube into a bullet-shaped bore in a heated die until the tube material is softened and deforms into a rounded bullet shape. Slits are then cut into the distal portion to create the leaflets.
Owner:ENDOTEX INTERVENTIONAL SYST
Flexible barb for anchoring a prosthesis
A barbed medical prosthesis is disclosed in which the barb includes a basal portion comprising a point of union with the substrate of origin (such as a strut), an anchoring portion adapted to embed into tissue, and a stress-dispersing portion located between the basal and anchoring portions. In one embodiment the stress-dispersing portion comprises a helical coil having a free winding that is unattached to the strut from which the barb extends. In another embodiment, the stress-dispersing portion comprises a series of bends or curves formed in the barb proximate to the point of union with the strut. The barb can be mechanically attached and / or soldered to the prosthesis, or integrally formed therefrom. A second barb portion and stress-dispersing portion, may also extend from the basal portion.
Owner:COOK MEDICAL TECH LLC
Posterior lumbar intervertebral stabilizer
A posterior intervertebral stabilizer includes: a first stabilizing element having: (i) a first surface operable to engage an endplate of a first vertebral bone of a spine, and (ii) a second surface spaced apart from the first surface and operable to engage an endplate of an adjacent second vertebral bone of the spine; a second stabilizing element having: (i) a first surface operable to engage an endplate of the first vertebral bone of the spine, and (ii) a second surface spaced apart from the first surface and operable to engage an endplate of the adjacent second vertebral bone of the spine; and respective spring elements, each including helical coils, disposed between the respective first and second surfaces of the first and second stabilizing elements, each operable to provide a reactive force in response to compression loads from the first and second vertebral bones, wherein at least some diameters of respective turns of the respective helical coils differ.
Owner:CARDO MEDICAL
Cervical intervertebral stabilizer
A cervical intervertebral stabilizer for a cervical region of a spine includes: a first surface operable to engage an endplate of a first vertebral bone of a spine; a second surface spaced apart from the first surface and operable to engage an endplate of an adjacent second vertebral bone of the spine; a spring element including at least one of: (i) a helical wound spring; and (ii) a hollow body having at least one slit forming a plurality of annular circumferential helical coils, the spring element being disposed between the first and second surfaces and being operable to provide reactive force in response to compression loads from the first and second vertebral bones, wherein at least some diameters of respective turns of the helical coils differ.
Owner:CARDO MEDICAL
System for reducing vibrations in a pressure pumping fleet
ActiveUS10119381B2Vibration highReduce turbulenceAC motor controlPositive displacement pump componentsFracturing fluidHelical coil
Owner:US WELL SERVICS LLC
Medical instrument and medical equipment for treatment, and rotational handle device
A rotational handle device rotates a medical instrument for vascular treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside. The tube includes a helical coil of metal, a tubular tip of metal secured to an end of the helical coil, and a cutting head of a blade shape, formed on the tubular tip, for cutting a lesion upon being rotated. A first rotatable tube rotates with the tube, and has a wire lumen. An externally operable second rotatable tube is secured to the first rotatable tube in an axial direction. An over torque preventing mechanism is disposed between the first and second rotatable tubes, and causes the second rotatable tube to rotate free from the first rotatable tube upon application of torque higher than the predetermined level to the second rotatable tube.
Owner:FMD
Devices and methods for crossing a chronic total occlusion
ActiveUS20050049574A1Increase pitchTendency increaseStentsBalloon catheterTotal occlusionHelical coil
A catheter comprising an elongate tubular member having a proximal end and a distal end, and a deflectable tip at the distal end of the elongate tubular member. The deflectable tip comprises a first helical coil having a first diameter and a second helical coil having a second diameter, the first diameter being larger than the second diameter. The first and second helical coils are arranged in the manner of a double helix. When viewed in cross-section, the first helical coil and the second helical coil are aligned at a first point on a circumference of each coil and misaligned at a second point on the circumference of each coil, where the second point is approximately 180 degrees from the first point. In certain embodiments the catheter further includes a dilatation balloon. Methods of use for crossing a chronic total occlusion are also described.
Owner:ST JUDE MEDICAL CARDILOGY DIV INC +1
Helical coil mitral valve annuloplasty systems and methods
Systems and methods for modifying a heart valve annulus in a minimally invasive surgical procedure. A helical anchor is provided, having a memory set to a coiled shape or state. The helical anchor is further configured to self-revert from a substantially straight state to the coiled state. The helical anchor is loaded within a needle that constrains the helical anchor to the substantially straight state. The needle is delivered to the valve annulus and inserted into tissue of the annulus. The helical anchor is then deployed from the needle (e.g., the needle is retracted from over the helical anchor). Once deployed, the helical anchor self-transitions toward the coiled shape, cinching engaged tissue of the valve annulus.
Owner:MEDTRONIC INC
Device and method for intralumenal anastomosis
Owner:ETHICON ENDO SURGERY INC
Thrombus removal device
A thrombus removal device includes a shaft with a distal end and a proximal end, a sheath with a distal end and a proximal end, and a helical coil attached at a proximal end to the distal end of the shaft and is disposed within the lumen of the sheath in a closed configuration. The helical coil includes a plurality of body portions with turns spaced apart longitudinally and laterally to facilitate screwing the helical coil into a thrombus and also providing an open area into which the thrombus can be captured. A distal tip of the helical coil is provided with a loop, an angle of which is about the same as the angle of at least one body portion. The helical coil assumes an open configuration when the sheath is retracted proximally from the distal tip. An aspiration device may be provided in fluid communication with the center of the helical coil.
Owner:COOK MEDICAL TECH LLC
Helical fixation elements for subcutaneous electrodes
Subcutaneous leads that incorporate active fixation elements including, for example, helical coils, provide for fixation of cardiac lead components within a patient. An implantable lead includes a lead body with a supported electrode configured for subcutaneous non-intrathoracic placement within a patient. A fixation element is provided on the implantable lead and configured to actively secure one or both of the subcutaneous electrode and the lead body in tissue. A delivery apparatus comprising a sheath may be employed that is configured to introduce the lead to a desired subcutaneous non-intrathoracic location. Lead delivery typically involves introducing a sheath into a subcutaneous non-intrathoracic body location of a patient, providing a lead supporting an electrode, advancing the lead through the sheath, actively fixing the lead to tissue, and thereafter removing the sheath from the patient.
Owner:CARDIAC PACEMAKERS INC
Endoscopic overtubes
An overtube for use with an endoscopic surgical instrument. In various embodiments, the overtube may comprise a substantially flexible helically wound continuous member forming a series of helical coils that define a hollow passage sized to receive a portion of the endoscopic surgical instrument therethrough. The coils may be configured to selectively interlock with each other to stiffen the overtube. An actuation system may be employed to steer the overtube and selectively stiffen it. Some embodiments include a second substantially flexible helically wound member that may be selectively wound between the first substantially flexible helically wound member or segments thereof.
Owner:ETHICON ENDO SURGERY INC
Helical coil mitral valve annuloplasty systems and methods
Systems and methods for modifying a heart valve annulus in a minimally invasive surgical procedure. A helical anchor is provided, having a memory set to a coiled shape or state. The helical anchor is further configured to self-revert from a substantially straight state to the coiled state. The helical anchor is loaded within a needle that constrains the helical anchor to the substantially straight state. The needle is delivered to the valve annulus and inserted into tissue of the annulus. The helical anchor is then deployed from the needle (e.g., the needle is retracted from over the helical anchor). Once deployed, the helical anchor self-transitions toward the coiled shape, cinching engaged tissue of the valve annulus.
Owner:MEDTRONIC INC
Devices and methods for crossing a chronic total occlusion
A catheter comprises an elongate tubular member having a proximal end and a distal end, and a deflectable tip at the distal end of the elongate tubular member. The deflectable tip comprises a first helical coil having a first diameter and a second helical coil having a second diameter, the first diameter being larger than the second diameter. The first and second helical coils are arranged in the manner of a double helix. When viewed in cross-section, the first helical coil and the second helical coil are aligned at a first point on a circumference of each coil and misaligned at a second point on the circumference of each coil, where the second point is approximately 180 degrees from the first point. In certain embodiments the catheter further includes a dilatation balloon. Methods of use for crossing a chronic total occlusion are also described.
Owner:ST JUDE MEDICAL CARDILOGY DIV INC +1
Anterior lumbar intervertebral stabilizer
A lumbar intervertebral stabilizer for a lumbar region of a spine includes: a first surface operable to engage an endplate of a first vertebral bone of a spine; a second surface spaced apart from the first surface and operable to engage an endplate of an adjacent second vertebral bone of the spine; a spring element including at least one of: (i) a helical wound spring; and (ii) a hollow body having at least one slit forming a plurality of annular circumferential helical coils, the spring element being disposed between the first and second surfaces and being operable to provide reactive force in response to compression loads from the first and second vertebral bones, wherein at least some diameters of respective turns of the helical coils differ.
Owner:CARDO MEDICAL
Ureteral stent configured for improved patient comfort and aftercare
A ureteral stent is configured for improved patient comfort and aftercare. The stent can have one or more of the following features: a distal portion with a somewhat flattened, non-circular cross-section that provides reduced irritation and elimination of urine reflux; a proximal portion with a helical coil shape that allows self-anchoring of the stent below the kidney; and a portion along the body of the stent having a coil shape that allows self-adjustment of the stent with ureteral movement.
Owner:BOSTON SCI SCIMED INC
Stent embolization device
InactiveUS7306622B2Reduces and restricts blood flowOcculdersBlood vesselsInsertion stentHelical coil
A method and device used for treating an aneurysm or a vessel of a patient. An embolization element that is adapted to reduce or block the blood flow into the aneurysm or vessel, together with a stent connected to the embolization element, is provided. The embolization element includes an expandible member. The embolization element and the stent are introduced into the vessel leading to and communicating with the aneurysm or vessel. The embolization element is directed into the aneurysm or vessel, with the stent being located in another vessel communicating with the first vessel. In this manner, the stent becomes compressed against the inner wall of the second vessel for anchoring the embolization element. In one form of the invention, the stent comprises a helical coil and the embolization element comprises a collapsible framework.
Owner:CODMAN & SHURTLEFF INC
Drug delivery catheters that attach to tissue and methods for their use
A drug delivery catheter suited for cardiac procedures. The catheter includes a distal helical coil or other fixation and penetrating element which can be operated from the proximal end of the catheter to engage and penetrate the myocardium. Once delivered to the inside of the heart, the catheter can be used to inject small doses of therapeutic agents to the myocardium. The drug delivery system of the catheter allows for precise control of the dose injected into the heart wall.
Owner:BIOCARDIA
Guide wire with embolic filtering attachment
A separate deliverable embolic protection device filter that attaches to a helical coil at a distal end of a conventional guide, for use in a blood vessel when an interventional procedure is being performed to capture any embolic material which may be created and released into the bloodstream during the procedure. The device includes a filter assembly with a proximal end and a distal end, and a guide wire connector attached to the distal end of the filter assembly. The guide wire connector is able to couple with the helical coil of the guide wire. A restraining sheath placed over the filter assembly in a coaxial arrangement maintains the filter assembly in a collapsed position and delivers the filter assembly separately to the helical coil of the guide wire, and then the guide wire connector is joined to the helical coil. Alternatively, the guide wire can include a rotatable coil section forming a portion of the distal tip coil on the guide wire which is adapted to be coupled to the filter assembly. This arrangement allows the filter assembly to be rotatably mounted onto the guide wire.
Owner:ABBOTT CARDIOVASCULAR
Methods and apparatus for vertebral stabilization using sleeved springs
A stabilization element for implantation in a patient includes: a spring element including a plurality of helical coils terminating at first and second ends; and at least one sleeve including at least one bore sized and shaped to slide or thread onto the helical coils of the spring element, the at least one sleeve being operable to engage a tulip of a bone anchor.
Owner:ALTUS PARTNERS
Stent aneurysm embolization device
A method and device used for treating an aneurysm of a patient. A framework for supporting one or more embolization elements is introduced into the patient's aneurysm. A stent, connected to the framework is introduced into a vessel leading into and communicating with the aneurysm, with the stent being compressed against the inner wall of the vessel for anchoring the framework. One or more embolization elements are introduced through the framework into the aneurysm, and in this manner the framework maintains the one or more embolization elements within the aneurysm. In the illustrative embodiment, the embolization element comprises an embolic coil, the stent comprises a helical coil, and the framework and helical coil are connected so as to be introduced into the patient simultaneously.
Owner:CODMAN & SHURTLEFF INC
Stent embolization device
InactiveUS20050033408A1Reduces and restricts blood flowOcculdersBlood vesselsInsertion stentBlood flow
A method and device used for treating an aneurysm or a vessel of a patient. An embolization element that is adapted to reduce or block the blood flow into the aneurysm or vessel, together with a stent connected to the embolization element, is provided. The embolization element includes an expandible member. The embolization element and the stent are introduced into the vessel leading to and communicating with the aneurysm or vessel. The embolization element is directed into the aneurysm or vessel, with the stent being located in another vessel communicating with the first vessel. In this manner, the stent becomes compressed against the inner wall of the second vessel for anchoring the embolization element. In one form of the invention, the stent comprises a helical coil and the embolization element comprises a collapsible framework.
Owner:CODMAN & SHURTLEFF INC
Implant anchor systems
InactiveUS7204847B1Improve anchoring abilityResists migrationHeart valvesCatheterMuscle tissueBand shape
The present invention provides implant devices configured to become anchored within tissue so that they do not migrate despite experiencing aggressive migration forces applied by the highly dynamic movement of muscle tissue that surrounds them. Additionally, methods for placing the devices so that they remain securely anchored within the tissue are provided. The devices are comprised of a flexible body, preferably formed from a helical wound spring. In a preferred embodiment the spring is wound from a ribbon-like filament having series of barbs or ridges formed along the proximal facing edge of the wound ribbon. The ribbon-like filament may be etched from a flat sheet of material, having barbs formed along one edge. The filament may then be wrapped into a helical coil shape to take the form of an implant having barbs formed along the proximally facing edge of each coil to resist migration.
Owner:CR BARD INC
Helical Coil Design and Process For Direct Fabrication From A Conductive Layer
InactiveUS20090206974A1Reduce resistanceOptimize field shapeTransformers/inductances coils/windings/connectionsCoils manufactureElectrical conductorHelical coil
A conductor assembly of the type which, when conducting current, generates a magnetic field or in which, in the presence of a changing magnetic field, a voltage is induced. According to an exemplary embodiment a conductor is positioned along a path of variable direction relative to a reference axis. The conductor has a width measurable along an outer surface thereof and along a series of different planes transverse to the path direction. The measured conductor width varies among the different planes. In one example, the conductor path is helical, positioned about the axis between turns of helical spaces, and the conductor width varies as a function of the azimuth angle.
Owner:ADVANCED MAGNET LAB
Orthopaedic Helical Coil Fastener and Apparatus and Method for Implantation Thereof
InactiveUS20080195096A1Improve scalabilityFacilitate bone ingrowthInternal osteosythesisBone implantLongitudinal contractionHelical coil
Provided herein is an implantable device and an expansion apparatus, method and system for implantation of the implantable device. In some embodiments, the device may include a helical coil having a contracted state, adapted for radial expansion and longitudinal contraction to an expanded state. The helical coil in the contracted state is adapted for positioning at a target site having walls defining an opening and is operable to engage the walls of the opening at said target site in the expanded state. The helical coil may also have an inner surface proximal to the longitudinal axis of the helical coil and an outer surface distal to the longitudinal axis of the helical coil, wherein the inner surface is operable to engage a fastener in the expanded state and wherein the outer surface defines a plurality of teeth extending radially outward to engage the walls of the target site.
Owner:FREI HANSPETER
Coil-in coil springs and innersprings
A mattress innerspring having coil-in-coil springs arranged in an array. Each coil-in-coil spring an outside helical coil and an inside helical coil, wherein the outside helical coil has a greater height and diameter than the inside helical coil, each coil having a dual spring rate between that of the outside helical coil and the combined spring rates of the outside and inside helical coils. The coil-in-coil springs may be pocketed or unpocketed in a mattress innerspring.
Owner:SEALY TECH LLC
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