| 摘要 |
A tether holder has a locking portion, for securing a proximal end of a tether, and a pin portion that may fit within a receptacle of a handle assembly of a tool. A distal member of an inner assembly of the tool engages an implantable medical device, from which the tether extends, through at least one lumen of the inner assembly and out through a proximal port of the handle assembly, which is located in proximity to the receptacle. An enlarged distal-most portion of a deployment tube of the tool contains the distal member and the device, and is moveable, relatively to the inner assembly and the device, to deploy the device out through a distal opening of the tool. The handle assembly may also include a flush lumen and a tether engaging conduit, both in fluid communication with the at least one lumen of the inner assembly. |
| 主权项 |
1. An interventional medical system comprising:
an implantable device including an electronic controller, an hermetically sealed housing containing the controller, and a stimulation electrode coupled to the controller and mounted in proximity to a distal end of the housing; a tether assembly including an elongate tether and a tether holder, the tether holder including a locking portion and a pin portion extending from the locking portion, and the tether having a distal end, secured to an attachment structure of the housing of the device, and a proximal end secured to the locking portion of the tether holder; and a tool facilitating deployment of the implantable medical device, the tool comprising: a handle assembly comprising a control member, a proximal port, and a receptacle configured to receive the pin portion of the tether holder of the tether assembly, the receptacle being located in proximity to the proximal port; an inner assembly comprising an elongate multi-lumen tube and a distal member coupled to the tube, the distal member being configured to engage an end of the medical device in proximity to the attachment structure, and at least one of the lumens of the multi-lumen tube receiving the elongate tether of the tether assembly, such that the tether extends from the device, through the at least one lumen, and out from the proximal port of the handle wherein the proximal end is secured to the tether holder; and an outer assembly comprising an elongate deployment tube extending around the multi-lumen tube of the inner assembly and being longitudinally moveable, by means of the control member of the handle assembly, relative to the inner assembly, between first and second positions, the deployment tube including an enlarged distal-most portion that defines a distal opening of the deployment tube, and the distal member of the inner assembly being located within the distal-most portion of the deployment tube; and wherein, when the deployment tube is in the first position, and when the device engages the distal member of the inner assembly, substantially an entirety of the device is contained within the distal-most portion; and when the deployment tube is in the second position, the device has passed out through the distal opening of the deployment tube. |
