PRESSURE SENSING IN IMPLANTABLE MEDICAL DEVICES
First Claim
1. An implantable medical device for delivering a therapeutic substance to a delivery site in a patient, comprising:
- a reservoir holding a supply of said fluid therapeutic substance;
a catheter having a proximal end, a delivery region and a lumen extending from said proximal end to said delivery region, said proximal end of said catheter being operatively coupled to said reservoir, said delivery region of said catheter being adapted to be placed proximate said delivery site in said patient, said therapeutic substance adapted to be delivered through said lumen to said patient;
a sensing device operatively coupled with said lumen of said catheter being capable of detecting a pressure of said therapeutic substance in said lumen; and
a controller operatively coupled to said sensing device, said controller being capable of taking an action in response to said pressure in said lumen.
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Accused Products
Abstract
An implantable medical device for delivering a therapeutic substance to a delivery site in a patient. A reservoir holds a supply of the fluid therapeutic substance. A catheter has a proximal end, a delivery region and a lumen extending from the proximal end to the delivery region. The proximal end of the catheter is operatively coupled to the reservoir. The delivery region of the catheter is adapted to be placed proximate the delivery site in the patient. The therapeutic substance is adapted to be delivered through the lumen to the patient. A sensing device is operatively coupled with the lumen of the catheter being capable of detecting a pressure of the therapeutic substance in the lumen. A controller is operatively coupled to the sensing device, the controller being capable of taking an action in response to the pressure in the lumen.
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Citations
79 Claims
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1. An implantable medical device for delivering a therapeutic substance to a delivery site in a patient, comprising:
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a reservoir holding a supply of said fluid therapeutic substance;
a catheter having a proximal end, a delivery region and a lumen extending from said proximal end to said delivery region, said proximal end of said catheter being operatively coupled to said reservoir, said delivery region of said catheter being adapted to be placed proximate said delivery site in said patient, said therapeutic substance adapted to be delivered through said lumen to said patient;
a sensing device operatively coupled with said lumen of said catheter being capable of detecting a pressure of said therapeutic substance in said lumen; and
a controller operatively coupled to said sensing device, said controller being capable of taking an action in response to said pressure in said lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A drug delivery system for delivering a liquid therapeutic substance to a delivery site in a patient, comprising:
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an implantable medical device, comprising;
a reservoir holding a supply of said fluid therapeutic substance; and
a pump fluidly coupled to said reservoir, said pump being capable of fluidly driving said therapeutic substance to said delivery site under pressure;
a catheter having a proximal end, a delivery region and a lumen extending from said proximate end to said delivery region, said proximal end of said catheter being operatively coupled to said pump, said delivery region of said catheter being adapted to be placed proximate said delivery site in said patient, said therapeutic substance adapted to be delivered through said lumen to said patient;
a sensing device operatively coupled with said lumen of said catheter being capable of detecting a pressure of said therapeutic substance in said lumen; and
a controller operatively coupled to said sensing device, said controller being capable of taking an action in response to said pressure in said lumen. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A method of delivering a therapeutic substance to a delivery site in a patient, comprising the steps of:
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pumping said therapeutic substance under pressure from a reservoir through a catheter fluidly coupled to said reservoir, said catheter having a proximal end, a delivery region and a lumen extending between said proximal end and said delivery region, said delivery region of said catheter placed in proximity to said delivery site in said patient;
detecting a pressure of said therapeutic substance in said lumen; and
taking an action in response to said pressure in said lumen. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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72. A sensor for a medical device for detecting pressure in a lumen of a catheter, comprising:
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a base having a first side and a second side;
a first pressure sensing diaphragm operatively coupled to said first side of said base;
a second pressure sensing diaphragm operatively coupled to said second side of said base;
a connector having a first end operatively coupled to a movable portion of said first pressure sensing diaphragm and a second end operatively coupled to a movable portion said second pressure sensing diaphragm, said connector moving with said first pressure sensing diaphragm and said second pressure sensing diaphragm in response to a change in pressure; and
an electrical element responsive to movement of said first pressure sensing diaphragm and said second pressure sensing diaphragm. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79)
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Specification