Implantable therapeutic substance delivery system with catheter access port block and method of use
First Claim
1. A liquid therapeutic substance delivery system comprising:
- an implantable medical device for delivering a liquid therapeutic substance to a delivery site within a patient, the delivery device including;
a housing defining a catheter outlet;
a reservoir maintained by the housing for containing the therapeutic substance, the reservoir forming a reservoir outlet;
a reservoir fill port fluidly connected to the reservoir;
a catheter access port apart from the reservoir fill port and including a needle inlet defining a passage, a well fluidly coupled to the catheter outlet via a fluid pathway, and a septum disposed between the well and the needle inlet; and
a denial device associated with the catheter access port and including;
a pin arranged to be movable between a first position in which the pin blocks passage of a needle into the well and a second position in which the pin does not prevent passage of a needle into the well, a biasing element biasing the pin to the first position, a solenoid operatively coupled to the pin and providing an energized state and a de-energized state, the solenoid being adapted and arranged such that in the energized state, the solenoid operates to move the pin from the first position to the second position.
1 Assignment
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Accused Products
Abstract
A system including an implantable delivery device having a housing, a reservoir, fill and catheter access ports, and a denial device. The housing maintains the fill port in fluid communication with the reservoir. The catheter access port includes a septum between an inlet and a well. The denial device includes a pin, a biasing element, and a solenoid. The pin is arranged to be movable between a first position in which the pin blocks passage of a needle into the well and a second position, with the biasing element biasing the pin to the first position. The solenoid is operatively coupled to the pin and provides an energized and de-energized states; in the energized state, the solenoid moves the pin from the first position to the second position to permit access to the well. An external controller effectuating clinician control over operation of the denial device is also provided.
30 Citations
35 Claims
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1. A liquid therapeutic substance delivery system comprising:
an implantable medical device for delivering a liquid therapeutic substance to a delivery site within a patient, the delivery device including;
a housing defining a catheter outlet;
a reservoir maintained by the housing for containing the therapeutic substance, the reservoir forming a reservoir outlet;
a reservoir fill port fluidly connected to the reservoir;
a catheter access port apart from the reservoir fill port and including a needle inlet defining a passage, a well fluidly coupled to the catheter outlet via a fluid pathway, and a septum disposed between the well and the needle inlet; and
a denial device associated with the catheter access port and including;
a pin arranged to be movable between a first position in which the pin blocks passage of a needle into the well and a second position in which the pin does not prevent passage of a needle into the well, a biasing element biasing the pin to the first position, a solenoid operatively coupled to the pin and providing an energized state and a de-energized state, the solenoid being adapted and arranged such that in the energized state, the solenoid operates to move the pin from the first position to the second position. - 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 for restricting access to a well of a catheter access port in an implantable medical delivery device for delivering a therapeutic substance contained within a reservoir, the delivery device further including a reservoir fill port apart from the catheter access port and fluidly connected to the reservoir, the catheter access port further including a needle inlet having a passage and a septum between the needle inlet and the well, the method comprising:
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normally operating a solenoid in a de-energized state, the solenoid being operatively coupled to a pin associated with the catheter access port to be moveable between a first position in which the pin blocks passage of a needle into the well and a second position in which the pin does not block passage into the well, wherein a biasing element biases the pin to the first position such that in the de-energized state, access to the well is restricted; and
operating the solenoid in an energized state to transition the pin to the second position during times when access to the well is desired. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification