20 results about "Pacemaker leads" patented technology

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

A delivery catheter for delivering a pacemaker lead into cardiac tissue. The catheter includes a distal end with a tip having an electrode configured for unipolar ablation of cardiac tissue that provides a breach of the endocardium while minimizing trauma to the patient.

A stabilizer sleeve is disclosed for use with cardiac implantable electronic device leads. The sleeve comprises a tubular body sized to receive the lead and shaped to bias the lead toward a desired anatomical location, thereby reducing migration, dislodgement, and interference with cardiac structures. The sleeve may be introduced with the lead as a unitary assembly or added after lead placement. Various embodiments include a slitted body for expansion, radiopaque markers for visualization, detachable nose-cone tips for guidewire tracking, and antimicrobial coatings. The sleeve may be formed of polymers, alloys, or composite materials, and may include features such as texturing or anchoring projections for tissue engagement. Applications include positioning within a tricuspid valve commissure to minimize regurgitation and stabilizing left ventricular leads within branches of the coronary sinus. The device and methods described provide improved long-term stability and performance of implanted cardiac leads.

The utility model relates to the technical field of pacemaker wire offset distance measuring equipment, and provides an attachable ruler device which comprises release paper and a transfer sticker, the transfer sticker is pasted on the release paper, the transfer sticker is used for being pasted on dressing on a pacemaker wire, the transfer sticker comprises a transverse scale part, and the transverse scale part is provided with a plurality of scales. The transverse scale part comprises a plurality of transverse scale lines which are arranged at intervals along a straight line, and the transverse scale part is used for measuring the displacement distance of a lead of the pacemaker. According to the utility model, through the arrangement of the transfer paste capable of transferring the transverse scale part to the dressing, the transfer paste is clearer and more difficult to erase compared with marking on the dressing, and when the lead offset distance of the pacemaker is measured, a user does not need to hold the graduated scale by hand and can directly observe the lead offset distance through the transverse scale part on the dressing, so that errors caused by hand shaking during measurement are avoided.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

A method of facilitating pacemaker lead removal using a shock wave catheter includes: advancing a catheter over a pacemaker lead, the catheter comprising a nozzle comprising an outlet sized to receive the pacemaker lead, and at least one shock wave emitter positioned proximally of the nozzle outlet; positioning the nozzle outlet adjacent to a treatment site comprising a lesion located at least partially distal to the nozzle outlet; generating one or more shock waves that propagate distally within the nozzle and are concentrated by the nozzle to disrupt the lesion to facilitate removal of the pacemaker lead.

A method of facilitating pacemaker lead removal using a shock wave catheter includes: advancing a catheter over a pacemaker lead, the catheter comprising a nozzle comprising an outlet sized to receive the pacemaker lead, and at least one shock wave emitter positioned proximally of the nozzle outlet; positioning the nozzle outlet adjacent to a treatment site comprising a lesion located at least partially distal to the nozzle outlet; generating one or more shock waves that propagate distally within the nozzle and are concentrated by the nozzle to disrupt the lesion to facilitate removal of the pacemaker lead.

The present invention discloses a bidirectional adapter for connecting a pacemaker and testing equipment. The adapter comprises a conductive metal body located in the middle and two electrode sheets located at both ends of the conductive metal body. Both electrode sheets are provided with electrode connectors, which are respectively used to connect to the spring clips of the pacemaker's bridge wire and the spring clips of the testing equipment. Compared with the conventional direct clamping contact of the spring clips, the bidirectional adapter avoids the problems of the spring clips being easily damaged, the connection being loose, and the contact being poor when the two spring clips are directly clamped together in the prior art. The adapter increases the connection firmness of the damage current testing device, avoids electrical signal interference caused by poor contact, and improves conductivity and test accuracy. At the same time, the bidirectional adapter structure of this type helps increase the contact area, reduce measurement errors, ensure the provision of stable and reliable damage current measurement parameters, and improve the durability of the damage current testing device, reducing the damage rate and lowering costs.

The utility model relates to an epicardium temporary pace-making lead fixing dressing plaster used after a cardiac surgery, and belongs to the technical field of medical instruments. The post-cardiac-surgery epicardium temporary pace-making wire fixing dressing patch comprises a base, a bonding layer, fixing protrusions and winding protrusions, the bonding layer covers the surface of one side of the base, the fixing protrusions and the winding protrusions are arranged on the side, away from the bonding layer, of the base, the number of the winding protrusions is not less than two, and the number of the winding protrusions is not less than two. The winding protrusion is provided with a winding hook groove, and the fixed protrusion is provided with a pin hole. The dressing paste for fixing the temporary pace-making wire of the epicardium after the cardiac surgery is reasonable in structural design, simple in structure, convenient to operate, good in fixing effect on the pacemaker wire and the electrode needle, high in practicability and worthy of being popularized in clinical work, and clinical practical application is met.

The present invention relates to a suture-free epicardial temporary pacemaker lead kit, which is used for installing a temporary pacemaker after cardiac surgery. Generally, the temporary pacing lead can be removed when there is no need for pacing for 72 consecutive hours after surgery. The pacemaker lead can also be removed after the patient's condition stabilizes and improves, which should not exceed one month. If the lead is not removed, it is very likely to cause infection, and even a debridement operation may be required. Due to various reasons, it is still common for the pacemaker lead to be temporarily unable to be removed. In this case, another thoracotomy is often required, which not only increases the pain and burden of the patient, but also is a hidden danger causing medical disputes. The beneficial effects of the present invention: the use of the present invention can easily connect the pacemaker lead to the epicardium without suture, and when removing the pacemaker lead, it is only necessary to pull out the fixed line inserted into the left end of the lead to easily pull the lead out of the body, effectively solving the problem that the pacemaker lead is difficult to remove during surgery.

A pacemaker system includes a drive-sense circuit (DSC) operably coupled to a pacemaker lead. The DSC generates a pace signal including electrical impulses based on a reference signal. The DSC provides the pace signal via the pacemaker lead to an electrically responsive portion of a cardiac conductive system of a subject to facilitate cardiac operation of a cardiovascular system of the subject. The DSC senses, via the pacemaker lead, cardiac electrical activity of the cardiovascular system of the subject that is generated in response to the pace signal and electrically coupled into the pacemaker lead and generates a digital signal that is representative of the cardiac electrical activity of the cardiovascular system of the subject that is sensed via the pacemaker lead. The DSC provides digital information to one or more processing modules that includes and / or is coupled to memory and that provide the reference signal to the DSC.

Methods and devices for separating an implanted object, such as a pacemaker lead, from tissue surrounding such object in a patient's vasculature system. A surgical device includes a handle, an elongate inner sheath and a circular cutting blade that extends from the distal end of the sheath upon actuating the handle. The circular cutting blade is configured to engage the tissue surrounding an implanted lead and cut such tissue in a coring fashion as the surgical device translates along the length of the lead, thereby allowing the lead to enter the device's elongate shaft. The surgical device has a barrel cam cylinder in the handle assembly that imparts rotation of the blade. The inner sheath and outer sheath are constructed of laser-cut hypotubes, thereby allowing the surgical device, particularly the sheath assembly, to have a smaller profile for navigating smaller sized vasculature.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

A pacemaker lead-guide catheter kit and system having anatomical target detection and distance measurement capabilities that aid in more precise lead implantation. The kit and system comprises a guide catheter and a lead, either or both of which include at least one ultrasound transducer that is used to more precisely implant the lead. The guide catheter may include an optical viewing assembly or window capable of displaying indicia on a portion of the guide catheter, pacing lead, or other medical apparatus. The optical viewing assembly is configured to display or transmit an image of the indicia which represents a distance from an end of the guide catheter or an end of a lead to the anatomical target. Additionally, the optical viewing assembly and indicia enables a Cardiologist to determine the location and / or depth of penetration of the lead.

A pacemaker system includes a drive-sense circuit (DSC) operably coupled to a pacemaker lead. The DSC generates a pace signal including electrical impulses based on a reference signal. The DSC provides the pace signal via the pacemaker lead to an electrically responsive portion of a cardiac conductive system of a subject to facilitate cardiac operation of a cardiovascular system of the subject. The DSC senses, via the pacemaker lead, cardiac electrical activity of the cardiovascular system of the subject that is generated in response to the pace signal and electrically coupled into the pacemaker lead and generates a digital signal that is representative of the cardiac electrical activity of the cardiovascular system of the subject that is sensed via the pacemaker lead. The DSC provides digital information to one or more processing modules that includes and / or is coupled to memory and that provide the reference signal to the DSC.

The utility model discloses a switching device for connecting a pacemaker lead and a pacing test line. The switching device comprises a bearing body and a rolling body, the bearing body is provided with an inner ring and an outer ring, the inner ring is used for connecting a connector of a pacemaker wire and a connector of a pacemaker pulse generator, and the outer ring is used for connecting an alligator clip of a pacemaker test line; and the rolling bodies are used for connecting and conducting the inner ring and the outer ring. According to the utility model, the inner ring is connected with the pacemaker wire joint, the outer ring is connected with the alligator clip of the pacemaker test wire, and the inner ring and the outer ring are connected and conducted through the rolling body, so that after the pacemaker wire is screwed in, the inner ring can adaptively rotate along with the pacemaker wire joint, and meanwhile, the alligator clip of the pacemaker test wire is always clamped on the outer ring; and the rolling body is communicated with the inner ring, so that the damage current and potential change in the process of screwing the joint of the pacemaker lead in the whole process can be monitored.

A delivery catheter and method for implanting a pacemaker lead. The delivery catheter includes a catheter body with a lumen, first and second electrodes connected with respective first and second conductor wires connecting the first and second electrodes to an energy source. The method includes inserting a delivery catheter into the patient, the catheter having a distal electrode, breaching cardiac tissue with the electrode, and inserting a pacemaker lead though the delivery catheter and electrode into the patient.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

Intravascular delivery system is designed for a safe and efficient access to secondary and tertiary vascular structures, such as the branches of the coronary sinus, to enhance the delivery and deployment of various catheters, such as, for example, pacemaker electrical leads. The over-the-wire system features a straight, or alternatively shaped, micro-catheter distal tip of an inner catheter that seamlessly cooperates with a peel-away reinforced outer catheter. The inner catheter and the peel-away reinforced outer catheter are advanced in their engaged mode of operation towards (or beyond) the target site. Subsequently, the inner and outer catheters are disengaged, and the inner catheter is removed from the outer catheter. A pacemaker lead may be advanced over the wire inside the outer catheter to the target site for deployment. Subsequently, the outer catheter is easily split and may be rapidly removed from the blood vessel.