Programmable implantable pump design
First Claim
1. A programmable pump for dispensing a fluid at varying flow rates to a patient comprising:
- a constant flow module including a first chamber housing the fluid, a first opening in fluid communication with the first chamber and a second opening in fluid communication with a catheter; and
a hermetically sealed control module attached to the constant flow module and including a motor assembly and valve block, the valve block being in fluid communication with the first and second openings, the motor assembly having a stepper motor, a valve connected with the stepper motor, and a bellows surrounding a portion of the valve,wherein the valve is connected to the stepper motor by a valve stem, a distal end of the valve stem being tapered and a distal-most portion of the valve stem extending within a flow path of the fluid, andwherein the flow rate of the fluid dispelled from the first chamber is affected by varying positioning of the valve.
2 Assignments
0 Petitions
Accused Products
Abstract
A programmable implantable pump is disclosed. The pump includes an implantable pump and a hermetically sealed module. The module provides for varying flow rates of fluid being dispensed from the pump or may provide for a constant flow rate of such fluid. In the case of varying flow rate capabilities, the module preferably includes one or more sensors to determine information relating to the pressure of the fluid, electronics for analyzing the pressure information and determining the flow rate of the fluid, and a mechanism for physically altering the flow rate. Methods of dispensing a medicament to a patient utilizing such a system are also disclosed, as are variations of the pump system.
182 Citations
20 Claims
-
1. A programmable pump for dispensing a fluid at varying flow rates to a patient comprising:
-
a constant flow module including a first chamber housing the fluid, a first opening in fluid communication with the first chamber and a second opening in fluid communication with a catheter; and a hermetically sealed control module attached to the constant flow module and including a motor assembly and valve block, the valve block being in fluid communication with the first and second openings, the motor assembly having a stepper motor, a valve connected with the stepper motor, and a bellows surrounding a portion of the valve, wherein the valve is connected to the stepper motor by a valve stem, a distal end of the valve stem being tapered and a distal-most portion of the valve stem extending within a flow path of the fluid, and wherein the flow rate of the fluid dispelled from the first chamber is affected by varying positioning of the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification