Infusion pump system with contamination-resistant features
View Patent ↗Some embodiments of an infusion pump system may include a construction that is resistant to external contaminants, such as precipitation, water splashes, sweat and the like. In particular embodiments, the infusion pump system can include a pump device that is removably attached to a controller device to provide an electrical connection therebetween. In such circumstances, the infusion pump system can be assembled as a sealed construction that protects the electrical connection between the pump device and the removable controller device.
1. A wearable infusion pump system, comprising:
a pump device including: a pump housing including an interior wall that at least partially defines a space to slidably receive a medicine cartridge, a mechanical drive system housed inside the pump housing and configured to dispense medicine from the medicine cartridge, a cap device configured to mechanically engage the pump hosing and seal an opening to the space for receiving the medicine cartridge, and a first electrical connector that is externally accessible along the pump housing, wherein the pump housing;
a controller device removably attachable to the pump device such that a controller housing of the controller device mates with the pump housing of the pump device, the controller device including: control circuitry housed inside the controller housing, a user interface display positioned along the controller housing, and a second electrical connector that is externally accessible along the controller housing and is configured to mate with the first electrical connector to provide electrical communication between the control circuitry housed inside the controller housing and the mechanical drive system housed inside the pump housing; and
a compressible gasket affixed to the pump housing and arranged proximate to the first electrical connector, wherein the compressible gasket is compressed between the controller housing and the pump housing and surrounds a periphery of the first and second electrical connectors when the controller device is removably attached to the pump device.
2. The pump system of claim 1 , wherein the compressible gasket resists migration of external contaminants toward the first and second electrical connectors when the controller device is removably attached to the pump device.
3. The pump system of claim 2 , wherein the compressible gasket comprises a generally flat structure having a central aperture and a first surface comprising an adhesive while a second opposite surface is free of an adhesive.
4. The pump system of claim 2 , wherein the compressible gasket comprises a polymer foam gasket coupled to an external surface of the pump housing.
5. The pump system of claim 4 , wherein the polymer foam gasket surrounds an electrical interface between the first and second electrical connectors when the controller device is removably attached to the pump device.
6. The pump system of claim 1 , wherein the compressible gasket resists migration of water to the first and second electrical connectors when the pump system is submerged underwater for an extended period of time.
7. The pump system of claim 6 , wherein the extended period of time comprises at least four hours.
8. The pump system of claim 1 , wherein the first and second electrical connectors engage one another by a guided motion in a longitudinal direction.
9. The pump system of claim 8 , wherein the compressible gasket comprises a major seal surface that extends generally perpendicular to the longitudinal direction.
10. The pump system of claim 9 , wherein the compressible gasket is compressed between the adjacent surfaces of the pump housing and the controller housing when the first and second electrical connectors engage one another by the guided motion in the longitudinal direction.
11. The pump system of claim 1 , wherein the space at least partially defined by the interior wall of the pump housing extends a majority of the length of the pump housing.
12. The pump system of claim 1 , wherein the cap device seals the opening to the space for receiving the medicine cartridge so as to resist migration of external contaminants into the space.
13. The pump system of claim 12 , wherein the cap device comprises a piercing member that penetrates a septum of the medicine cartridge when the medicine cartridge is received in the space.
14. The pump system of claim 1 , wherein the space at least partially defined by the interior wall of the pump housing is positioned rearward of a rear exterior face of the controller housing and the user interface display is positioned along a front face of the controller housing that is opposite from the rear exterior face of the controller housing.
15. The pump system of claim 1 , wherein the pump device includes one or more structures configured to prevent reuse of the pump device after the medicine cartridge is exhausted, and wherein the controller device is a reusable controller device configured to removably attach with a series of pump devices.