摘要:
Techniques for configuring electrical stimulation therapy utilizing one or more stimulation intensity values are described. In one example, a method includes receiving a stimulation intensity value that corresponds to an equal intensity function; determining a pulse width value and a pulse amplitude value based on the equal intensity function; and controlling delivery of electrical stimulation pulses with the determined pulse width value and amplitude value to a patient. A stimulation intensity value may correspond to a plurality of paired pulse width and amplitude values having substantially the same intensity. For example, the plurality of paired pulse width and amplitude values may activate a substantially equal volume of tissue when a stimulation pulse with the paired values is delivered.
摘要:
A medical system comprises a plurality of electrodes; at least one sensor configured to output at least one signal based on at least one physiological parameter of a patient; and a processor. The processor is configured to control delivery of stimulation to the patient using a plurality of electrode configurations. Each of the electrode configurations comprises at least one of the plurality of electrodes. For each of the electrode configurations, the processor is configured to determine a first response of target tissue to the stimulation based on the signals, and a second response of non-target tissue to the stimulation based on the signals. The processor is also configured to select at least one of the electrode configurations for delivery of stimulation to the patient based on the first and second responses for the electrode configurations. As examples, the target tissue may be a left ventricle or vagus nerve.
摘要:
The disclosure is directed to a user interface with a menu that facilitates stimulation therapy programming. The user interface displays a representation of the electrical leads implanted in the patient and at least one menu with icons that the user can use to adjust the stimulation therapy. The user may drag one or more field shapes from a field shape selection menu onto the desired location relative to the electrical leads. A manipulation tool menu may also allow the user to adjust the field shapes placed on the electrical leads, which represent the stimulation region. The programmer that includes the user interface then generates electrical stimulation parameter values for the stimulator to deliver stimulation according to the field shapes or field shape groups defined/located by the user. The field shapes may represent different types of stimulation representations, such as current density, activation functions, and neuron models.
摘要:
The invention is directed to techniques and systems in which external brain monitoring is used to facilitate implantation and configuration of an implantable medical device. The techniques may create an open loop or closed loop system in which brain signals quantify the efficacy of electrical logical stimulation (or drug therapy via an implantable drug pump) at locations outside of the brain. The techniques may be used to improve placement of leads and electrodes during an implantation procedure, and/or to select or adjust stimulation parameters either during the implantation procedure or possibly following implantation of an implantable medical device. The described techniques have applications for the alleviation of pain, but may find other applications where EEG signals can quantify the efficacy of treatment via an implantable medical device.
摘要:
Medical leads having at least one segmented row of electrodes, as well as at least one ring electrode that extends substantially completely around the periphery of the lead, are described. The electrodes in a segmented row extend around only a portion of the periphery of the lead, rather than substantially around the entire periphery. The electrodes in a segmented row may be distributed at respective locations around the periphery of the lead and separated by insulating material. The ring electrodes and segmented rows are located at respective axial positions. For example, in some embodiments, a plurality of segmented rows, such as two rows having three electrodes each, are located between two ring electrodes. Such a lead may, for example, provide a variety of stimulation modalities because of localized stimulation capabilities.
摘要:
Techniques for configuring electrical stimulation therapy utilizing one or more stimulation intensity values are described. In one example, a method includes receiving a stimulation intensity value that corresponds to an equal intensity function; determining a pulse width value and a pulse amplitude value based on the equal intensity function; and controlling delivery of electrical stimulation pulses with the determined pulse width value and amplitude value to a patient. A stimulation intensity value may correspond to a plurality of paired pulse width and amplitude values having substantially the same intensity. For example, the plurality of paired pulse width and amplitude values may activate a substantially equal volume of tissue when a stimulation pulse with the paired values is delivered.
摘要:
A system includes an implantable electrical stimulation lead configured for intravenous introduction into a vessel proximate to a heart and an electrical stimulator. The lead comprises a lead body and at least three electrode segments. The electrical stimulator is coupled to the electrode segments and configures a first of the electrode segments as a first anode, a second of the electrode segments as a cathode, and a third of the electrode segments as a second anode, and delivers electrical stimulation to the heart via the cathode and first and second anodes. Additional techniques for delivering electrical stimulation include using multiple electrode segments as cathodes and electrically isolating other electrode segments. Other examples are directed to techniques for directing electrical therapy to a vagus nerve of a patient.
摘要:
A medical system comprises a plurality of electrodes; at least one sensor configured to output at least one signal based on at least one physiological parameter of a patient; and a processor. The processor is configured to control delivery of stimulation to the patient using a plurality of electrode configurations. Each of the electrode configurations comprises at least one of the plurality of electrodes. For each of the electrode configurations, the processor is configured to determine a first response of target tissue to the stimulation based on the signals, and a second response of non-target tissue to the stimulation based on the signals. The processor is also configured to select at least one of the electrode configurations for delivery of stimulation to the patient based on the first and second responses for the electrode configurations. As examples, the target tissue may be a left ventricle or vagus nerve.
摘要:
The disclosure is directed to a user interface with a menu that facilitates stimulation therapy programming. The user interface displays a representation of the electrical leads implanted in the patient and at least one menu with icons that the user can use to adjust the stimulation therapy. The user may drag one or more field shapes from a field shape selection menu onto the desired location relative to the electrical leads. A manipulation tool menu may also allow the user to adjust the field shapes placed on the electrical leads, which represent the stimulation region. The programmer that includes the user interface then generates electrical stimulation parameter values for the stimulator to deliver stimulation according to the field shapes or field shape groups defined/located by the user. The field shapes may represent different types of stimulation representations, such as current density, activation functions, and neuron models.
摘要:
The disclosure is directed to a user interface with a menu that facilitates stimulation therapy programming. The user interface displays a representation of the electrical leads implanted in the patient and at least one menu with icons that the user can use to adjust the stimulation therapy. The user may drag one or more field shapes from a field shape selection menu onto the desired location relative to the electrical leads. A manipulation tool menu may also allow the user to adjust the field shapes placed on the electrical leads, which represent the stimulation region. The programmer that includes the user interface then generates electrical stimulation parameter values for the stimulator to deliver stimulation according to the field shapes or field shape groups defined/located by the user. The field shapes may represent different types of stimulation representations, such as current density, activation functions, and neuron models.