摘要:
The disclosure is directed to an implant tool (50) and cannula (68) used to facilitate the implantation of a medical device into a patient. The implant tool includes a housing that is held by a user and a needle (62) attached to the housing. The cannula may be positioned over the needle and delivered to a target tissue within the patient. The cannula includes an electrode (160) at a distal portion to deliver test stimulation to confirm the location of the target site or placement of the implant tool relative to the target site before removing the needle of the implant tool. In this manner, the cannula may be repositioned within the patient until the position of the implant tool and cannula relative to the target site is verified with the test stimulation.
摘要:
This disclosure is directed to extra, intra, and transvascular medical lead placement techniques for arranging medical leads and electrical stimulation and/or sensing electrodes proximate nerve tissue within a patient. It discloses an implantable medical lead system configured to deliver electrical stimulation from within a lumen of a blood vessel within a patient to nerve tissue located adjacent to and outside of the blood vessel, the system comprising: a medical lead arranged within a lumen of the blood vessel; an electrode connected toward a distal end of the lead adjacent the nerve tissue; and an active fixation member connected toward a distal end of the lead adjacent the nerve tissue and configured to anchor the lead to a wall of the blood vessel lumen.
摘要:
Example embodiments of therapy systems may include an implantable component and an external component that can be configured into one of multiple selectable operating modes. Plugging an external antenna into the external component can automatically configure the external component into one of the operating modes. Initial values for the parameters of a therapy program can be incremented or decremented after a predetermined period of time by a predetermined amount to obtain a subsequent value of the parameter and therapy can be applied using the subsequent value. The implantable component can be adapted to be selectively configured into one of a training mode and a delivery mode. The implantable component is configured to simulate application of therapy when configured in the training mode.
摘要:
Baroreflex activation is achieved by providing suitable control signals to a baroreflex activation device. A method comprises establishing a therapy interval within the therapy interval, establishing a plurality of dose intervals, and generating an electrical output signal. The electrical output signal has a time dependence such that the average electrical power applied to the baroreflex activation device differs between first and second portions of at least some dose intervals. Another method comprises establishing a series of therapy interval portions, during at least some therapy intervals, establishing a plurality of burst intervals, and generating an electrical output signal. The electrical output signal has a time dependence such that the average electrical power applied to the baroreflex activation device differs between first and second portions of the therapy intervals and also differs between first and second portions of at least some burst intervals.
摘要:
A device and a method for treating a medical condition include a reversible member disposed in a patient's gastro-intestinal tract, and a dispensing member coupled to the reversible member that delivers a drug and/or a noxious when a predetermined substance is detected. In a different embodiment, the device and method of the present invention include a polymer infused with a drug and disposed into a preformed shell inside the gastric space, where it expands and hardens, releasing the drug over time. Both the casing and the polymer may be biocompatible. The present invention enables the slow-release of anti-addictive agents without patient tampering and with the appropriate dosage. Ancillary systems such as sensors, actuators, refill and recharge ports, and communication and data processing units may also be included.
摘要:
A medical electrical lead for transvascularly stimulating a nerve, muscle or other tissue from an adjacent vessel is described. The lead includes an expandable distal portion having one or more spirals for securing and stabilizing the lead within the vessel.
摘要:
A medical system for electrical stimulation includes a first column of electrodes, a second column of electrodes, an expandable member disposed between first and second columns, and an expansion mechanism adapted to transmit an externally applied pressure to the expandable member. The pressure expands the expandable member in order to force the first column of electrodes apart from the second column of electrodes. The first and second columns, disposed side-by-side, may be inserted through a percutaneous needle and into a epidural space, alongside a spinal cord; after insertion, the first column may be forced apart from the second column by applying the pressure to the expandable member.
摘要:
A neuron stimulating lead having a stent-like anchor is described. A distal portion of the lead is mounted to an exterior of the lead anchor. The stent-like lead anchor is formed from a superelastic material and is adapted to transition from a collapsed configuration to an expanded configuration upon deployment in a vessel. In the expanded configuration, the lead anchor presses the distal portion of the lead against at least one vessel wall of a vessel in which the lead is deployed securing and stabilizing the distal portion of the lead within the vessel.
摘要:
A combined electrical and chemical stimulation lead is especially adapted for providing treatment to the spine and nervous system. The stimulation lead includes electrodes that may be selectively positioned along various portions of the stimulation lead in order to precisely direct electrical energy to ablate or electrically stimulate the target tissue.