System, apparatus and method for inferring glucose levels within the peritoneum with implantable sensors
First Claim
1. A method of measuring glucose concentration, comprising:
- providing a first sensor wherein luminescent material encapsulated by a first oxygen permeable polymer barrier is located proximal a distal end of a first optical fiber;
providing a second sensor wherein luminescent material and glucose oxidase adjacent each other and together encapsulated by a second oxygen permeable polymer barrier are located proximal a distal end of a second optical fiber in near proximity to said first sensor for placement of said first and second sensors in the vicinity of a peritoneal cavity of a medical patient;
providing a catheter, comprising at least one auxiliary catheter lumen in communication with each said luminescent material, whereby said luminescent material upon becoming degraded through repeated fluorescing may be replaced with upgraded or new luminescent material;
providing a source of blue light, emissions of which transmitted through said distal ends of said first and second optical fibers are capable of fluorescing within said luminescent material of both said first and second sensors and of being reemitted in a form of red light from both said first and second sensors;
providing a photoreceptor structured and arranged to receive said reemitted red light from both said first and second sensors, said photoreceptor being in communication with a processor capable of comparing information transmitted through said photoreceptor from said first and second sensors;
providing a cannula, comprising an axial lumen and a leading end susceptible to insertion through an abdominal wall of said patient;
inserting said leading end into said vicinity of said peritoneal cavity of said patient;
introducing both said first and second sensors through said axial lumen and into said vicinity of said peritoneal cavity;
measuring glucose concentration with said first and second sensors; and
displaying said measured glucose concentration.
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Accused Products
Abstract
A glucose sensor assembly useful in patient systems includes an oxygen sensor from which glucose levels in the vicinity of the peritoneal cavity may be inferred. The sensor assembly may be associated with electronics, such as any or all of a DC power supply, an LED source of blue light, a photoreceptor for red light, a CPU, and transceiver, by a direct percutaneous connection. Alternatively they may be associated transdermally with the sensor and some of the electronics being located subdurally. Insulin infusion means are contemplated to respond manually or mechanically to information from the sensors through the CPU. Mechanical response may be automatic. Infusion means may be located subdurally. It is contemplated that the present invention enable revitalization or replacement of fluorescing compounds and glucose oxidase within the sensor assembly.
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Citations
36 Claims
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1. A method of measuring glucose concentration, comprising:
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providing a first sensor wherein luminescent material encapsulated by a first oxygen permeable polymer barrier is located proximal a distal end of a first optical fiber; providing a second sensor wherein luminescent material and glucose oxidase adjacent each other and together encapsulated by a second oxygen permeable polymer barrier are located proximal a distal end of a second optical fiber in near proximity to said first sensor for placement of said first and second sensors in the vicinity of a peritoneal cavity of a medical patient; providing a catheter, comprising at least one auxiliary catheter lumen in communication with each said luminescent material, whereby said luminescent material upon becoming degraded through repeated fluorescing may be replaced with upgraded or new luminescent material; providing a source of blue light, emissions of which transmitted through said distal ends of said first and second optical fibers are capable of fluorescing within said luminescent material of both said first and second sensors and of being reemitted in a form of red light from both said first and second sensors; providing a photoreceptor structured and arranged to receive said reemitted red light from both said first and second sensors, said photoreceptor being in communication with a processor capable of comparing information transmitted through said photoreceptor from said first and second sensors; providing a cannula, comprising an axial lumen and a leading end susceptible to insertion through an abdominal wall of said patient; inserting said leading end into said vicinity of said peritoneal cavity of said patient; introducing both said first and second sensors through said axial lumen and into said vicinity of said peritoneal cavity; measuring glucose concentration with said first and second sensors; and displaying said measured glucose concentration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of measuring glucose concentration, comprising:
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providing a first sensor wherein luminescent material encapsulated by a first oxygen permeable polymer barrier is located proximal a distal end of a first optical fiber; providing a second sensor wherein luminescent material and glucose oxidase adjacent each other and together encapsulated by a second oxygen permeable polymer barrier are located proximal a distal end of a second optical fiber in near proximity to said first sensor for placement of said first and second sensors in vicinity of a peritoneal cavity of a medical patient; providing a source of blue light, emissions of which transmitted through said distal ends of said first and second optical fibers are capable of fluorescing within said luminescent material of both said first and second sensors and of being reemitted in a form of red light from both said first and second sensors; providing a photoreceptor structured and arranged to receive said reemitted red light from both said first and second sensors, said photoreceptor being in communication with a processor capable of comparing information transmitted through said photoreceptor from said first and second sensors; providing a catheter, comprising an auxiliary lumen structured and arranged to be capable of being placed in communication with said glucose oxidase, said glucose oxidase configured for replacement with upgraded or new glucose oxidase upon becoming degraded from exposure to oxygen and glucose in said vicinity of said peritoneal cavity; providing a cannula, comprising an axial lumen and a leading end susceptible to insertion through an abdominal wall of said patient; inserting said leading end into said vicinity of said peritoneal cavity of said patient; introducing both said first and second sensors through said axial lumen and into said vicinity of said peritoneal cavity; measuring glucose concentration with said first and second sensors; and displaying said measured glucose concentration. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for measuring glucose concentration, comprising:
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a first sensor wherein luminescent material encapsulated by a first oxygen permeable polymer barrier is located proximal a distal end of a first optical fiber; a second sensor wherein luminescent material and glucose oxidase adjacent each other and together encapsulated by a second oxygen permeable polymer barrier are located proximal a distal end of a second optical fiber in near proximity to said first sensor for placement of said first and second sensors in the vicinity of a peritoneal cavity of a medical patient, said first and second sensors configured to measure glucose concentration and operably coupled to a display configured for displaying said measured glucose concentration; a catheter, comprising an auxiliary lumen structured and arranged to be capable of being placed in communication with said glucose oxidase, said glucose oxidase configured for replacement with upgraded or new glucose oxidase upon becoming degraded from exposure to oxygen and glucose in said vicinity of said peritoneal cavity; a source of blue light, emissions of which transmitted through said distal ends of said first and second optical fibers are capable of fluorescing within said luminescent material of both said first and second sensors and of being reemitted in a form of red light from both said first and second sensors; a photoreceptor structured and arranged to receive said reemitted red light from both said first and second sensors, said photoreceptor being in communication with a processor capable of comparing information transmitted through said photoreceptor from said first and second sensors; and a cannula, comprising an axial lumen and a leading end susceptible to insertion through an abdominal wall of said patient. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A system for measuring glucose concentration, comprising:
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a first sensor wherein luminescent material encapsulated by a first oxygen permeable polymer barrier is located proximal a distal end of a first optical fiber; a second sensor wherein luminescent material and glucose oxidase adjacent each other and together encapsulated by a second oxygen permeable polymer barrier are located proximal a distal end of a second optical fiber in near proximity to said first sensor for placement of said first and second sensors in the vicinity of a peritoneal cavity of a medical patient, said first and second sensors configured to measure glucose concentration and operably coupled to a display configured for displaying said measured glucose concentration; a catheter, comprising at least one auxiliary catheter lumen in communication with said luminescent material, said luminescent material configured for replacement with upgraded or new luminescent material upon becoming degraded through repeated fluorescing; a source of blue light, emissions of which transmitted through said distal ends of said first and second optical fibers are capable of fluorescing within said luminescent material of both said first and second sensors and of being reemitted in a form of red light from both said first and second sensors; a photoreceptor structured and arranged to receive said reemitted red light from both said first and second sensors, said photoreceptor being in communication with a processor capable of comparing information transmitted through said photoreceptor from said first and second sensors; and a cannula, comprising an axial lumen and a leading end susceptible to insertion through an abdominal wall of said patient. - View Dependent Claims (33, 34, 35, 36)
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Specification