Patent application number | Description | Published |
20080234694 | Tool and a Method for Attaching a Cardiac Stimulator Lead at a Desired Position Inside a Heart - For attaching a cardiac stimulator lead at a desired position inside a heart, the stimulator lead having a flexible tube from which a helix is extendible at a distal end thereof by a screw rotating motion and having a proximal end interconnected with an operating member, a tool has a flexible portion wire with an engagement formation at a distal end thereof that mates with a complimentary engagement formation at a proximal end of the operating member. The tool has a handle containing an internal cavity, with a proximal portion of the torsion wire being rotationally rotated by the handle in the internal cavity, and a resilient yoke is formed in the internal cavity, with at least a part of the yoke engaging grooves and ridges in a circumferential boundary surface of the internal cavity. | 09-25-2008 |
20100037457 | METHOD FOR MANUFACTURING AN ACTIVE FIXATION ELECTRODE - In a method for manufacturing active fixation helices for the stimulation and/or sensing of organs, an elongated helix precursor body is produced that has one or more electrical conductors surrounded by an insulating material. This helix precursor body is then shaped into a helix, material removed in predetermined places in order to expose the areas of the conductors which will be used as electrodes in the final product. The body is coated with an electrically conducting biocompatible coating which is subsequently partly removed in continuous loops from around the electrodes in order to electrically insulate them from each other and to ensure that the electrically active areas of the electrodes are of the correct dimensions. | 02-18-2010 |
20100114279 | MEDICAL IMPLANTABLE LEAD - A medical implantable lead has a proximal end and a distal end, and a flexible flat elongate body. The elongate body includes a layer of strip conductors extending along the length of the flat elongate body, a top insulating layer, and a bottom insulating layer. The layer of strip conductors is sealingly enclosed between the top and bottom insulating layers, and at least a major portion of the flat elongate body is twisted into an elongate helical portion having a central cavity extending longitudinally of the helical portion. | 05-06-2010 |
20100114280 | MEDICAL IMPLANTABLE LEAD AND A METHOD FOR ATTACHING THE SAME - A medical implantable lead of the type being adapted to be implanted into a human or animal body and attached with a distal end to an organ inside the body, has a helix of a helical wire in the distal end which is adapted to be screwed into the organ. In addition to the first helix, the lead also has a second helix of a helical wire, the second helix having the same diameter, the same pitch and being intertwined with the helical wire of the first helix and which, upon rotation of the first helix, will be rotated and screwed into the tissue. The first helix is electrically non-conductive whereas the second helix is electrically conductive. In a method for attaching a medical implantable lead to an organ inside a human or animal body, such a medical lead is employed and fixed to tissue in vivo. | 05-06-2010 |
20100179629 | MEDICAL IMPLANTABLE LEAD AND METHOD FOR MANUFACTURING THE SAME - In a medical implantable lead for monitoring and/or controlling of an organ inside a human or animal body, and a method for the manufacture thereof, two electrical conductors are each connected to a respective electrode for receiving or transmitting of electrical signals from or to the organ, and a tubular header is provided in a distal end of the lead. One electrode is positioned in the outermost distal end of the lead whereas the other is a ring electrode that is mounted by a coupling on the outside of the header. The coupling and the header are integrated into one unitary piece of an electrically insulating material having a coupling portion, and the coupling portion is adapted configured for quick fixing connection of the ring electrode to the header. | 07-15-2010 |
20100217107 | MEDICAL IMPLANTABLE LEAD AND METHOD FOR MOUNTING THE SAME - In a medical implantable lead and method for monitoring and/or controlling of an organ inside a human or animal body, the lead has a helix in a distal end that is rotatable by an inner wire coil ( | 08-26-2010 |
20100222855 | MEDICAL IMPLANTABLE LEAD WITH FLEXIBLE SEGMENTED SLEEVE (As Amended) - A medical implantable lead, which is adapted to be attached with a distal end to tissue inside a human or animal body, has a flexible sleeve in the distal end that protrudes a distance in an axial direction from the rest of the lead. When in a desired position, a force acting in an axial direction on the flexible sleeve will bring the sleeve to be compressed in the axial direction such that the surface area of the distal end will be enlarged. The flexible sleeve is formed with axial slots from an unbroken ring segment in an outermost distal edge of the sleeve and a distance in the proximal direction such that flexible segments are formed in the sleeve, wherein a force acting in an axial direction on the flexible sleeve will bring the sleeve to be compressed in the axial direction by folding outwards of the flexible segments. | 09-02-2010 |
20100234931 | ACTIVE FIXATION ELEMENT - A helical fixation element of an implantable medical lead. The fixation element has at least one blood drainage channel running along at least a tissue-penetrating portion of the helix windings of the fixation element. The channel guides, during penetration and anchoring of the fixation element and the lead in a tissue, blood leaking from the tissue away from the vicinity of the fixation element, thereby reducing the size of a fibrin clot formed around the fixation element. The capture threshold for stimulating the tissue is therefore reduced. | 09-16-2010 |
20100324636 | MEDICAL IMPLANTABLE LEAD WITH PIVOTING SEGMENTS (As Amended) - A medical implantable lead, which is adapted to be attached with a distal end to tissue inside a human or animal body, has a distal end that is variable in size between an introducing state, when the distal end has a minimum surface area, and a mounting state when the surface area of the distal end is enlarged in relation to its minimum surface area. For this purpose, the distal end of the medical implantable lead has several pivoting segments, each being pivotally hinged about a pivot axis directed substantially tangentially in relation to the lead, with each pivoting segment being pivotable about the pivot axis between an introducing state in which each pivoting segment is rotated to a position in parallel or in a small angle to the longitudinal axis of the lead, and a mounting state in which each pivoting segment is rotated to a position essentially perpendicular to the longitudinal axis of the lead. | 12-23-2010 |
20110034985 | BIPOLAR SCREW-IN LEAD - An implantable active fixation lead includes an outer sheath, a protector member having a peripheral surface extending between its distal and proximal end surfaces with a helical groove formed in the peripheral surface, and a fixation helix integral with the outer sheath. The fixation helix includes a tip end engageable with body tissue and slidably engaged with the helical groove for relative translation and rotation. A longitudinal force on the lead firmly engages the protector member's distal end surface with the body tissue. With the fixation helix initially retracted proximally of the protector member's distal end surface and disengaged from the body tissue, upon application of torque to the outer sheath, the distal end surface of the protector member is moved proximally with respect to the fixation helix which, simultaneously, is extended distally beyond the distal end surface of the protector member to an extended position into engagement with the body tissue. | 02-10-2011 |
20110093053 | MEDICAL LEAD ASSEMBLY AND METHOD FOR IMPLANTATION THEREOF (As Amended) - An assembly includes a medical implantable lead adapted to be attached with a distal end of the lead to an organ inside a human or animal body, the medical implantable lead being formed with an inner lumen extending along essentially the entire length of the lead. The assembly also includes a support core that has a desirable stiffness and a suitably cross sectional dimension such that it is insertable into the lumen in order to increase the stiffness of the lead along its length during its working life when being implanted into a body. A method for implanting a medical implantable lead into a human or animal body makes use of such an assembly. | 04-21-2011 |
20110144732 | IMPLANTABLE MEDICAL LEAD - An implantable medical lead has a header assembly having an inner header channel and a radial aperture. An inner lead assembly includes a helical active fixation element connected to an inner conductor. The inner lead assembly is coaxially housed within the header channel. A post is inserted into the radial aperture after insertion of the inner lead assembly into the channel. The post projects radially inwardly into the header channel to become interposed between adjacent turns of the helical fixation element. At this position the post is able to transform a rotation of the helical fixation element to a longitudinal movement of the fixation element. | 06-16-2011 |
20120035693 | IMPLANTABLE MRI COMPATIBLE MEDICAL LEAD - A medical implantable lead is adapted to be implanted into a human or animal body for monitoring and/or controlling of an organ inside the body, and has in a distal end, a combined fixation means and electrode member in form of a helix, which is rotatable in relation to the lead and extendable out from the distal end by rotation of a tubular torque transferring member. The helix is electrically connected to a connector in the proximal end by at least one electrically conducting wire, which is formed as an electrically conducting coil, which is separate from the tubular torque transferring member and that includes one or more individual wires each having an electrically conducting wire core and a surrounding electrically insulating layer. The tubular torque transferring member has no electrically conducting function to or from the helix. The lead is arranged such that the electrical connection between the helix and the conducting wire is always maintained regardless of the rotational position of the helix while no electrical connection is present between the helix and the tubular torque transferring member although the helix is rotatable by the tubular torque transferring member. | 02-09-2012 |
20120221085 | ACTIVE FIXATION IMPLANTABLE MEDICAL LEAD - An implantable medical lead has a distal lead portion with a tubular header and a fixation helix provided in a lumen of the tubular header. The fixation helix is connected to a shaft attached to a conductor coil. A tubular coupling is connected to the tubular header and is coaxially arranged relative the shaft, with the shaft in its lumen. Rotation of the conductor coil causes rotation of the shaft and the fixation helix and longitudinal movement of the fixation helix out of the implantable medical lead by a rotation-to-translation transforming element. A friction device is arranged between the shaft and the tubular coupling or between the tubular header to oppose rotation of the shaft relative the tubular header and the tubular coupling. | 08-30-2012 |
20130102858 | IMPLANTABLE SENSOR DEVICE AND SYSTEM - The implantable medical device for measuring pressure is disclosed. The implantable medical device is connectable to a medical lead and comprises an outer sheath and a helically shaped needle arranged at the outer sheath. A pressure sensing body having a distal part is movably arranged in the outer sheath. The pressure sensing body is arranged such that the distal part is located within the outer sheath in an initial state of the pressure sensing body, wherein the pressure sensing body is arranged to be advanced from the initial state to protrude from the outer sheath and such that it is at least partially surrounded by the helically shaped needle; and a pressure sensor arranged at or adjacent to the distal part of the pressure sensing body for sensing pressure. | 04-25-2013 |
20130156933 | METHOD FOR MANUFACTURING AN ACTIVE FIXATION ELECTRODE - The present invention relates to methods for manufacturing active fixation helices for the stimulation and/or sensing of organs. A first embodiment of a method in accordance with the present invention for making a helix comprises a first step of producing an elongated helix precursor body comprising one or more electrical conductors surrounded by an insulating material. This helix precursor body is then shaped into a helix, material removed in predetermined places in order to expose the areas of the conductors which will be used as electrodes in the final product. The body is coated with an electrically conducting biocompatible coating which is subsequently partly removed in continuous loops from around the electrodes in order to electrically insulate them from each other and to ensure that the electrically active areas of the electrodes are of the correct dimensions. | 06-20-2013 |