Swallowing stimulation system
A swallowing stimulation system has a swallowing stimulator for use in triggering an act of swallowing in a patient. The swallowing system has an operating unit including operating elements for receiving user inputs, whereby the operating elements are allocated to different possible physical properties of a food, such that a user can allocate a particular food by means of the operating elements to at least one of at least two categories. The operating unit is designed to generate a control signal corresponding to a user input for the swallowing stimulator, and the swallowing stimulator is designed so that a stimulus for triggering an act of swallowing is formed in response to the control signal.
1. A swallowing stimulation system comprising:
an implantable sensor unit configured to
detect pressure against a palate of a patient to detect a shaping of a food bolus and generate a detected pressure,
and
detect a muscle activity associated with a swallow via an electromyography recording or EMG recording;
an operating unit comprising a plurality of operating elements, each configured to receive a corresponding patient input, wherein the operating elements are assigned to one or more physical properties of a food, wherein said one or more physical properties comprise a consistency of a particular food; and,
a swallowing stimulator, configured to
trigger an act of swallowing in the patient as a function of
the patient input associated with said operating elements of said operating unit
and
the detected pressure
and
the detected muscle activity
based on a set of stimulation parameters that correspond to
said patient input
and
said consistency of said particular food.
2. The swallowing stimulation system according to claim 1 , wherein the set of stimulation parameters comprises a plurality of sets of stimulation parameters that are stored in the operating unit and are assigned to respective operating elements, and wherein the operating unit is configured to transmit the set of stimulation parameters to the swallowing stimulator or the sensor unit or both after said operating unit receives said patient input.
3. The swallowing stimulation system according claim 1 , wherein the operating unit comprises a graphic display configured to display a plurality of icons that correspond to a respective plurality of consistencies of foods.
4. The swallowing stimulation system according to claim 3 , wherein the display comprises a touch screen, and a section of the touch screen is allocated to an icon shown on the display wherein said icon forms a particular one of said plurality of operating elements, and wherein said operating unit is configured to receive said patient input when said icon is activated by said patient.
5. The swallowing stimulation system according to claim 4 , wherein the operating unit is configured to accept a double-click and ignore a single-click to avoid inadvertent operation of said swallowing stimulator.
6. The swallowing stimulation system according to claim 4 , wherein said stimulation parameters comprise
a minimum pressure at which to start a minimum time window for pressure to be considered a chew;
a minimum number of chews to detect before said trigger said act of swallowing is performed;
a maximum time between two chews;
a time of stimulation delay between detection of said minimum number of chews and said trigger of said act of swallowing;
a pulse type of voltage or current;
a stimulation pulse length;
a number of stimulation pulses to be delivered at said trigger of said act of swallowing;
a maximum time after a pulse delivery until a capture is detected by said implantable sensor unit;
a minimum time that said EMG recording is above a threshold to count said trigger as a successful stimulation;
a time after said pulse delivery to wait for said capture;
a backup pulse flag that determines if a backup pulse is delivered if said successful stimulation does not occur.
7. The swallowing stimulation system according to claim 6 , wherein said stimulation parameters further comprise
a morphology flag that determines if pressure velocity is utilized;
a minimum velocity of pressure rise;
a minimum velocity of pressure drop.
8. The swallowing stimulation system according to claim 6 , wherein said stimulation stimulator is configured to trigger a backup pulse if said EMG recording does not indicate a successful stimulation of a first stimulation pulse initiated by said swallowing stimulator.