Process and device for treating obesity and syndromes related to motor disorders of the stomach of a patient
First Claim
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1. A process for treating obesity and syndromes related to motor disorders of the stomach of a patient, comprising the steps of:
- (a) mounting an electrical stimulator subcutaneously on the abdominal wall and anchoring the stimulator onto the fascia of the musculus rectus abdominis;
(b) guiding an electrocatheter operatively connected with the stimulator along a path to place the electrocatheter in stomach wall tissue and to insert a tip of the electrocatheter in the seromuscular layer of the gastric antrum; and
(c) generating sequential electrical pulses for a preset period of time by the electrical stimulator and transmitting the electrical pulses through the tip to the stomach to stimulate the entire stomach, thereby artificially altering a natural gastric motility of a patient to be treated to slow down food transit through the stomach.
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Abstract
The process for treating obesity and syndromes related to motor disorders of the stomach of a patient consists in artificially altering, by means of sequential electrical pulses and for preset periods of time, the natural gastric motility of the patient to prevent emptying or to slow down gastric transit.
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Citations
15 Claims
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1. A process for treating obesity and syndromes related to motor disorders of the stomach of a patient, comprising the steps of:
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(a) mounting an electrical stimulator subcutaneously on the abdominal wall and anchoring the stimulator onto the fascia of the musculus rectus abdominis; (b) guiding an electrocatheter operatively connected with the stimulator along a path to place the electrocatheter in stomach wall tissue and to insert a tip of the electrocatheter in the seromuscular layer of the gastric antrum; and (c) generating sequential electrical pulses for a preset period of time by the electrical stimulator and transmitting the electrical pulses through the tip to the stomach to stimulate the entire stomach, thereby artificially altering a natural gastric motility of a patient to be treated to slow down food transit through the stomach. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device for treating obesity and syndromes related to motor disorders of the stomach of a patient, the device comprising:
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an electrical stimulator adapted to be applied subcutaneously on the abdominal wall and generating an operating frequency including from 2 to 15 pulses per minute; and connecting means for operatively connecting the electrical stimulator with an area of the stomach of a patient to be treated, the connecting means comprising an electrocatheter guidable along an insertion direction and including; an elongated internal stimulating conductor formed with a metallic conducting free end adapted for transmitting the pulses at the operating frequency over the area of the stomach to be treated to artificially alter a natural gastric motility of the patient for preventing emptying or slowing down food transit, for improving functioning of the lower esophageal or pyloric sphincters and for preventing acidification of the duodenum for a preset time, a plurality of pointed but not sharp angled metallic barbs operatively connected with the conductor and spaced angularly from one another, the barbs extending in a direction opposite the direction of insertion for stabilizing contact between the electrocatheter and the viscus, the barbs extending radially outwardly from the conducting end of the stimulating conductor, and an insulating layer and with a flat velveted plastic expansion formed on a sheath and located proximate to the conducting end for anchoring the electrocatheter on the gastric serosa with a surgical stitch.
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10. A device for treating obesity and syndromes related to motor disorders of the stomach of a patient, the device comprising:
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an electrical stimulator adapted to be applied subcutaneously on the abdominal wall and generating an operating frequency including from 2 to 15 pulses per minute; and connecting means for operatively connecting the electrical stimulator with an area of the stomach of a patient to be treated, the connecting means comprising an electrocatheter guidable along an insertion direction and including; an elongated internal stimulating conductor formed with a metallic conducting free end adapted for transmitting the pulses at the operating frequency over the area of the stomach to be treated to artificially alter a natural gastric motility of the patient for preventing emptying or slowing down food transit, for improving functioning of the lower esophageal or pyloric sphincters and for preventing acidification of the duodenum for a preset time, a plurality of pointed but not sharp angled metallic barbs operatively connected with the conductor and spaced angularly from one another, the barbs extending in a direction opposite the direction of insertion for stabilizing contact between the electrocatheter and the viscus, a return conductor surrounding the stimulating conductor and spaced therefrom, an insulating sheath between the stimulating and return conductors, a rigid cylinder mounted on opposite ends of the return conductor, the cylinder being provided with the plurality of barbs, the barbs being elastic laminas provided with respective free ends and divaricating from inserting to anchoring positions, and an insulating flexible tubular slider on the return conductor guidable therealong and provided with gripping means for engaging the laminas in the inserting position, the laminas spreading apart upon displacing of the slider to anchor the electrocatheter to the viscus. - View Dependent Claims (11, 12, 13, 14)
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15. A process for treating obesity and motor disorders of the stomach-of a patient which comprises:
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anchoring in tissue of the stomach at a location in a region of the antrum and on an outside of the stomach an electrode capable of producing an electrical wave propagatable over the stomach from the antrum; and periodically energizing said electrode with 2 to 15 pulses per minute at a voltage of 1 to 5 volts with a constant current of 2 to 15 milliamperes for a duration of 10 to 90 milliseconds to limit movement of food through the stomach.
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Specification