Multi-tube sensor for sensing urinary sphincter and urethral pressure
First Claim
1. An implantable pressure sensor comprising:
- a sensor housing;
a first flexible tube extending from the housing;
a second flexible tube extending from the housing; and
a sensing device that senses a fluid pressure within the first flexible tube indicative of a urinary sphincter pressure level outside of the first flexible tube when the first flexible tube is positioned adjacent a urinary sphincter of a patient, and senses a fluid pressure within the second flexible tube indicative of a urethral pressure level outside of the second flexible tube when the second flexible tube is positioned within a urethra of the patient,wherein each of the first flexible tube and the second flexible tube includes a closed distal end and an open proximal end in communication with the sensing device, andwherein a proximal portion of the second flexible tube is disposed within the first flexible tube, and a distal portion of the second flexible tube extends beyond a distal portion of the first flexible tube such that the distal portion of the second flexible tube is positioned within the urethra when the first flexible tube is positioned adjacent to the urinary sphincter.
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Accused Products
Abstract
The disclosure describes a multi-tube pressure sensor to measure the pressure at two sites that may be used in a therapeutic incontinence control system. The system senses urinary sphincter pressure and urethral pressure and sends the information to a stimulator that is capable of stimulation therapy to control sphincter contractility, thus reducing unwanted urinary incontinence. Measuring sphincter pressure is accomplished through the use of a tube placed through the sphincter and urethral pressure is measured by a second tube placed within the urethra, both tubes may be attached to a single module implanted within the bladder. Pressure within the tube generates an electrical signal that is sent wirelessly to an implanted stimulator connected to a lead positioned near pelvic floor nerves. An external device may be used to wirelessly send information to the implanted stimulator and inhibit stimulation in order for the patient to empty the bladder. Additionally, the pressure information and stimulation information may be recorded and reviewed for continued patient monitoring.
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Citations
28 Claims
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1. An implantable pressure sensor comprising:
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a sensor housing; a first flexible tube extending from the housing; a second flexible tube extending from the housing; and a sensing device that senses a fluid pressure within the first flexible tube indicative of a urinary sphincter pressure level outside of the first flexible tube when the first flexible tube is positioned adjacent a urinary sphincter of a patient, and senses a fluid pressure within the second flexible tube indicative of a urethral pressure level outside of the second flexible tube when the second flexible tube is positioned within a urethra of the patient, wherein each of the first flexible tube and the second flexible tube includes a closed distal end and an open proximal end in communication with the sensing device, and wherein a proximal portion of the second flexible tube is disposed within the first flexible tube, and a distal portion of the second flexible tube extends beyond a distal portion of the first flexible tube such that the distal portion of the second flexible tube is positioned within the urethra when the first flexible tube is positioned adjacent to the urinary sphincter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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an implantable pressure sensor comprising; a sensor housing, a first flexible tube extending from the housing, a second flexible tube extending from the housing, and a sensing device that senses a fluid pressure within the first flexible tube indicative of a urinary sphincter pressure level outside of the first flexible tube when the first flexible tube is positioned adjacent a urinary sphincter of a patient, and senses a fluid pressure within the second flexible tube outside of the second flexible tube indicative of a urethral pressure level when the second flexible tube is positioned within a urethra of the patient, wherein each of the first flexible tube and the second flexible tube includes a closed distal end and an open proximal end in communication with the sensing device, and wherein a proximal portion of the second flexible tube is disposed within the first flexible tube, and a distal portion of the second flexible tube extends beyond a distal portion of the first flexible tube such that the distal portion of the second flexible tube is positioned within the urethra when the first flexible tube is positioned adjacent to the urinary sphincter; and an implantable stimulator that delivers electrical stimulation to the patient based on the sensed pressures. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A method comprising:
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sensing via a sensing device a first pressure level exerted by a urinary sphincter within a patient based on a pressure of fluid within a first flexible tube placed proximate to the urinary sphincter; and sensing via the sensing device a second pressure level exerted within a urethra of the patient based on a pressure of fluid within a second flexible tube placed within the urethra below the urinary sphincter, wherein each of the first flexible tube and the second flexible tube includes a closed distal end and an open proximal end in communication with the sensing device, and wherein a proximal portion of the second flexible tube is disposed within the first flexible tube, and a distal portion of the second flexible tube extends beyond a distal portion of the first flexible tube such that the distal portion of the second flexible tube is positioned within the urethra when the first flexible tube is positioned adjacent to the urinary sphincter. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification