Drug delivery systems and methods
First Claim
Patent Images
1. A method of delivering a drug to a patient, comprising:
- inserting a catheter or needle into an intrathecal space of the patient;
measuring or estimating a natural intrathecal pulsation of the patient using a sensor; and
with a controller, controlling a pump to coordinate infusion of a drug through the catheter or needle with the measured or estimated natural intrathecal pulsation to override the natural intrathecal pulsation and move the drug cranially within the intrathecal space.
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Abstract
Drug delivery systems and methods are disclosed herein. In some embodiments, a drug delivery system can be configured to deliver a drug to a patient in coordination with a physiological parameter of the patient (e.g., the patient'"'"'s natural cerebrospinal fluid (CSF) pulsation or the patient'"'"'s heart or respiration rate). In some embodiments, a drug delivery system can be configured to use a combination of infusion and aspiration to control delivery of a drug to a patient. Catheters, controllers, and other components for use in the above systems are also disclosed, as are various methods of using such systems.
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Citations
24 Claims
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1. A method of delivering a drug to a patient, comprising:
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inserting a catheter or needle into an intrathecal space of the patient; measuring or estimating a natural intrathecal pulsation of the patient using a sensor; and with a controller, controlling a pump to coordinate infusion of a drug through the catheter or needle with the measured or estimated natural intrathecal pulsation to override the natural intrathecal pulsation and move the drug cranially within the intrathecal space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of delivering a drug to a patient, comprising:
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inserting a catheter or needle into an intrathecal space of the patient; measuring a physiological parameter of the patient using a sensor; and with a controller, controlling a pump to coordinate delivery of a drug through the catheter or needle with the physiological parameter measured by the sensor, wherein said delivery comprises; aspirating a volume of CSF from the patient; infusing a drug through a first, proximal port of the catheter or needle while aspirating CSF through a second, distal port of the catheter or needle to form a bolus of drug between the first and second ports; and infusing the previously-extracted CSF at a location proximal to the bolus to urge the bolus in a distal direction. - View Dependent Claims (23, 24)
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Specification