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公开(公告)号：US20170296260A1
公开(公告)日：2017-10-19
申请号：US15485690
申请日：2017-04-12
CPC分类号： A61B18/1482 , A61B18/1492 , A61B2017/00867 , A61B2018/00267 , A61B2018/00285 , A61B2018/00404 , A61B2018/00416 , A61B2018/00577 , A61B2018/00589 , A61B2018/00791
摘要： The present disclosure provides for a device and methods of use to endoluminally ablate and/or occlude a body vessel using a radiofrequency (“RF”) signal. The device has two conductive elements or electrodes that form various electrical circuits, and the two conductive elements are operable to create an electrical field. The electrical field ablates the body vessel, forming an occlusion.
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公开(公告)号：US10682172B2
公开(公告)日：2020-06-16
申请号：US15379683
申请日：2016-12-15
IPC分类号： A61B18/04 , A61B18/10 , A61B18/08 , A61B17/12 , A61N1/36 , A61N1/39 , A61B18/00 , A61B17/00 , A61B18/14
摘要： The preferred embodiment provides apparatus for ablating a vessel by generating heat within a vessel to cause blood clotting to occlude the vessel. The apparatus includes an electrically resistive element at the distal end of the apparatus, the resistive element being uncoated and therefore in bare form. An alternating current supply feeds electrical current through the resistive element to cause heating of the element and surrounding blood or tissue. The alternating current power supply preferably is balanced about a centre point so as to create a net sum of alternating pulses of zero. It has been found that the supply of alternating current to the resistive element reduces or eliminates corrosion of the resistive element in blood as the resistive element is heated. Use of conductive coatings for a sacrificial anode can be avoided.
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公开(公告)号：US20180140447A1
公开(公告)日：2018-05-24
申请号：US15818880
申请日：2017-11-21
CPC分类号： A61F2/966 , A61B17/12109 , A61B17/12172 , A61B2017/00867 , A61B2017/1205 , A61B2090/3966 , A61F2/01 , A61F2/07 , A61F2/86 , A61F2/89 , A61F2002/011 , A61F2002/016 , A61F2002/068 , A61F2210/0014 , A61F2250/0071 , A61F2250/0098
摘要： An implantable medical device includes an expandable support structure, which may be a stent. In the example shown, the device is a vascular plug and includes a twisted occluding sleeve held within the stent, which closes the lumen through the stent. At a distal end of the stent, there is provided a guide tip made of a resilient material, which includes a plurality of separable legs coupled to a central hub. The legs extend radially outwardly when the device is in its radially expanded configuration, providing an open passage to the medical device. This structure of combined medical device and expandable guide tip enables the omission of a conventional dilator tip of an introducer assembly and allows vascular plugs and similar devices to be deployed over-the-wire and with the assistance of a dilator tip, while avoiding having to pull the dilator tip through the deployed medical device after implantation.
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公开(公告)号：US20170224964A1
公开(公告)日：2017-08-10
申请号：US15411504
申请日：2017-01-20
IPC分类号： A61M25/09
CPC分类号： A61M25/09 , A61M2025/09125 , A61M2025/0915 , A61M2205/0216
摘要： A guide wire includes a plurality of segments which can interlock rotatably relative to one another. A locking element extends through a lumen of the segments. When the locking element is in an unlocked condition the segments are able to rotate relative to one another. In this mode, the guide wire is very flexible. The locking element can be tightened to cause the segments to lock in engagement with one another and to fix the guide wire in position. In practice, the guide wire can be fixed in a curved or bent configuration, which enables the guide wire to provide a rigid support for a microcatheter or other element of an introducer assembly. The guide wire therefore can exhibit both extreme flexibility and stiffness.
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公开(公告)号：US20170290622A1
公开(公告)日：2017-10-12
申请号：US15485357
申请日：2017-04-12
CPC分类号： A61B18/082 , A61B2018/00404 , A61B2018/00416 , A61B2018/00577 , A61B2018/0063 , H05B3/54 , H05B3/80
摘要： The present disclosure provides for a device and methods of use to endoluminally ablate and/or occlude a body vessel using a current to perform resistive heating. The device includes a resistive coil, which in some embodiments has a portion with a first, higher average pitch which can be electrified, and a second, lower average pitch, which is not electrified but aids in relieving mechanical stress. The device may have a support, which may be a wire guide, around which the coil is disposed. The device may provide a minimal diameter and flexibility for navigation of tortuous vessels.
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公开(公告)号：US20170007261A1
公开(公告)日：2017-01-12
申请号：US15204262
申请日：2016-07-07
IPC分类号： A61B17/12
CPC分类号： A61B17/12113 , A61B17/12145 , A61B2017/00867 , A61B2017/12077 , A61F2/95 , A61F2002/011
摘要： A system for controlling deployment of an implantable medical includes an implantable medical device and a gripper mechanism. One or both of the medical device and the gripper mechanism are made from a shape-memory alloy material having a temperature at which the material will transition from a martensite state to an austenite state. The shape-memory alloy material has a transition temperature that is higher than a normal body temperature and a wide hysteresis band, with a temperature at which the material transitions back into the martensite state being below a normal body temperature. The medical device will expand or change shape upon being heated by a current passing therethrough, but will not transition into its remembered shape until such current is applied.
摘要翻译： 用于控制可植入医疗的部署的系统包括可植入医疗装置和夹持器机构。 医疗装置和夹持机构中的一个或两个由具有材料将从马氏体状态转变为奥氏体状态的温度的形状记忆合金材料制成。 形状记忆合金材料具有高于正常体温和宽滞后带的转变温度，其中材料转变回马氏体状态的温度低于正常体温。 医疗装置在通过其中流过的电流加热时会膨胀或变形，但不会过渡到其记忆形状，直到施加电流为止。
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公开(公告)号：US20160278843A1
公开(公告)日：2016-09-29
申请号：US15079858
申请日：2016-03-24
CPC分类号： A61B18/1233 , A61B18/082 , A61B18/14 , A61B18/1492 , A61B2018/00041 , A61B2018/00083 , A61B2018/00398 , A61B2018/00404 , A61B2018/00577 , A61B2018/00589 , A61B2018/00714 , A61B2018/00791 , A61B2018/1407
摘要： A medical ablation system includes an elongate element to be inserted endoluminally into a patient's vessel and includes at its distal end a pre-heating element and an ablation element. The system provides pre-heating of, for example, blood to a first threshold temperature above body temperature but below ablation temperature; and then a second heating stage provided by the ablation element. Pre-heating reduces the amount of energy required to effect ablation, resulting in more focussed embolization with a higher proportion of energy delivered to the area in a more controlled manner. The arrangement can reduce the amount of damage to surrounding tissues and organs.
摘要翻译： 医疗消融系统包括被插入患者血管中的细长元件，并在其远端包括预热元件和消融元件。 该系统将例如血液预热到高于体温但低于消融温度的第一阈值温度; 然后由消融元件提供的第二加热台。 预热减少了实现消融所需的能量，导致更多的聚焦栓塞，以更受控的方式以较高比例的能量输送到该区域。 该装置可以减少对周围组织和器官的损伤量。
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公开(公告)号：US10434288B2
公开(公告)日：2019-10-08
申请号：US15411504
申请日：2017-01-20
摘要： A guide wire includes a plurality of segments which can interlock rotatably relative to one another. A locking element extends through a lumen of the segments. When the locking element is in an unlocked condition the segments are able to rotate relative to one another. In this mode, the guide wire is very flexible. The locking element can be tightened to cause the segments to lock in engagement with one another and to fix the guide wire in position. In practice, the guide wire can be fixed in a curved or bent configuration, which enables the guide wire to provide a rigid support for a microcatheter or other element of an introducer assembly. The guide wire therefore can exhibit both extreme flexibility and stiffness.
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公开(公告)号：US20170296261A1
公开(公告)日：2017-10-19
申请号：US15485759
申请日：2017-04-12
CPC分类号： A61B18/1492 , A61B18/14 , A61B2018/00404 , A61B2018/00577 , A61B2018/00589 , A61B2018/00791 , A61B2018/126 , A61B2018/1475
摘要： The present disclosure provides for a device and methods of use to endoluminally ablate and/or occlude a body vessel using a radiofrequency (“RF”) signal. The device has two conductive elements or electrodes that form an electrical circuit and are operable to create an electrical field. The electrical field ablates the body vessel, forming an occlusion.
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公开(公告)号：US20170202602A1
公开(公告)日：2017-07-20
申请号：US15405525
申请日：2017-01-13
CPC分类号： A61M25/10 , A61B18/08 , A61B18/082 , A61B18/1206 , A61B18/1492 , A61B2017/00026 , A61B2017/00084 , A61B2017/00119 , A61B2018/00083 , A61B2018/0022 , A61B2018/00404 , A61B2018/00416 , A61B2018/00422 , A61B2018/00577 , A61B2018/00589 , A61B2018/00595 , A61B2018/0063 , A61B2018/00648 , A61B2018/00702 , A61B2018/00714 , A61B2018/00791 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/087 , A61B2018/1435
摘要： The present disclosure provides for a device and methods of use to endoluminally ablate and/or occlude a body vessel using a radiofrequency (“RF”) signal and a current to perform resistive heating. The device may have a RF mode and a resistive mode, and may perform each mode in sequential order until the vessel is fully occluded. The device further comprises a control unit to operate the device in its various modes. The device may be provided in a system including an occlusive element, such as a balloon catheter, to prevent blood flow through the ablation/occlusion site.
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