# US 9,517,300 B2 · Pump system and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,300 B2 - Document ID: US9517300B2 - Status: Granted - Kind: B2 - Application number: 13/886,589 - Filed: 2013-05-03 - Published: 2014-01-23 - Granted: 2016-12-13 - Earliest claimed: 2012-07-20 - Assignees: Bigfoot Biomedical, Inc. - Applicants: Bigfoot Biomedical, Inc. - Inventors: Geoffrey C Sims - Web page: https://patentgrep.com/patent/US9517300B2 ## CPC - A61M 5/14244: {adapted to be carried by the patient, e.g. portable on the body} - A61M 2005/14268: {with a reusable and a disposable component} - A61M 2005/31518: {designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members} - A61M 2039/0036: {characterised by a septum having particular features, e.g. having venting channels or being made from antimicrobial or self-lubricating elastomer} - A61M 2039/205: {comprising air venting means} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract Some embodiments of an infusion pump system may be configured to provide air pressure equilibrium between the ambient air pressure external to the infusion pump system and the internal air pressure inside the infusion pump system. In particular embodiments, the infusion pump system can be equipped with an air-transmissible, liquid-tight seal along an interface between a pump body and a cap device configured to attach to the pump body. ## Claims ### Claim 1 A portable infusion pump system, comprising: a portable housing defining an opening to receive a medicine; a pump drive system arranged in the portable housing and configured to dispense medicine from the portable housing when the medicine is received in a space of the portable housing; a cap device configured to engage with the portable housing to enclose the medicine in the portable housing when the medicine is received in the space; and an air-transmissible annular gasket and an elastomeric seal positioned at an interface between the portable housing and the cap device and positioned adjacent to the opening when the cap device engages with the portable housing, wherein the annular gasket is air-transmissible so that air is passable through an annular sidewall of the gasket at the interface between the portable housing and the cap device while the gasket resists migration of liquids into the portable housing. ### Claim 2 (depends on 1) The portable infusion pump system of claim 1, wherein the air-transmissible annular gasket is seated in a groove defined by the cap device. ### Claim 3 (depends on 1) The portable infusion pump system of claim 1, wherein the air-transmissible annular gasket comprises a hydrophobic material. ### Claim 4 (depends on 1) The portable infusion pump system of claim 1, wherein the elastomeric seal is abutted with the air-transmissible gasket. ### Claim 5 (depends on 1) The portable infusion pump system of claim 1, wherein the cap device defines a fluid output path for the medicine in the portable housing when the medicine is received in the space. ### Claim 6 (depends on 5) The portable infusion pump system of claim 5, wherein the cap device includes a structure that is irreversibly attachable to the portable housing so as to cover the opening defined by the portable housing. ### Claim 7 (depends on 1) The portable infusion pump system of claim 1, further comprising control circuitry that electrically communicates with the pump drive system to control dispensation of the medicine from the portable housing when the medicine is received in the space. ### Claim 8 (depends on 7) The portable medical infusion pump system of claim 7, wherein the control circuitry is housed in a removable controller device that is removably attachable to the portable housing. ### Claim 9 (depends on 1) The portable infusion pump system of claim 1, wherein the annular gasket comprises an inner rim that defines an aperture through the annular gasket, the aperture of the annular gasket being generally aligned with the opening defined by the portable housing when the cap device engages with the portable housing. ### Claim 10 (depends on 9) The portable infusion pump system of claim 9, wherein the medicine passes through the aperture to a fluid output path of the cap device. ### Claim 11 (depends on 1) The portable infusion pump system of claim 1, wherein the medicine is a liquid, and the air-transmissible annular gasket is not in communication with the liquid medicine. ### Claim 12 A portable infusion pump system, comprising: a portable housing defining an opening to receive a medicine; a pump drive system arranged in the portable housing and configured to dispense medicine from the portable housing when the medicine is received in a space of the portable housing; a cap device configured to engage with the portable housing to enclose the medicine in the portable housing when the medicine is received in the space; and an air-transmissible gasket and an elastomeric seal positioned at an interface between the portable housing and the cap device and positioned adjacent to the opening when the cap device engages with the portable housing, wherein the gasket is air-transmissible so that air is passable through the interface between the portable housing and the cap device while the gasket resists migration of liquids into the portable housing; wherein the elastomeric seal is abutted with the air-transmissible gasket, and wherein the air-transmissible gasket comprises a first major surface and a second major surface, and wherein the entire first major surface is positioned in abutment with the elastomeric seal. ### Claim 13 (depends on 12) The portable infusion pump system of claim 12, wherein the seal comprises a generally L-shaped cross-section that defines an inner rim of the seal, the inner rim of the seal being seated within a grove defined by the cap device. ### Claim 14 A portable infusion pump system, comprising: a pump device including a pump housing that defines a space to receive a medicine, a drive system positioned in the pump housing to dispense the medicine from the pump device when the medicine is received in the space of the pump housing, a cap device configured to directly attach with the pump housing to enclose the medicine in the pump housing when the medicine is received in the space of the pump housing, and a hydrophobic gasket assembly including an annular hydrophobic member and an elastomeric seal positioned at an interface between the pump housing and the cap device when the cap device engages with the portable housing, wherein the hydrophobic gasket assembly is configured to permit the passage of air into and out of the pump housing through an annular sidewall of the hydrophobic member while resisting the passage of liquids into the pump housing; and a controller device removably attachable to the pump housing so as to electrically connect with the pump device, wherein the controller device houses control circuitry configured to communicate with the drive system positioned in the pump housing to control dispensation of the medicine from the pump device. ### Claim 15 (depends on 14) The portable infusion pump system of claim 14, wherein a first major surface of the hydrophobic member is abutted by the elastomeric seal. ### Claim 16 (depends on 15) The portable infusion pump system of claim 15, wherein the elastomeric seal comprises a generally L-shaped cross-section that defines an inner rim of the elastomeric seal, the inner rim of the elastomeric seal being seated within an annular grove defined by the cap device. ### Claim 17 (depends on 14) The portable infusion pump system of claim 14, wherein an inner rim of the hydrophobic member provides an air path for the passage of air into and out of the pump housing. ### Claim 18 (depends on 14) The portable infusion pump system of claim 14, wherein the cap device defines a fluid output path for the medicine in the pump housing when the medicine is received in the space. ### Claim 19 (depends on 18) The portable infusion pump system of claim 18, wherein the cap device includes a structure that is irreversibly attachable to the pump housing so as to cover an opening defined by the pump housing. ### Claim 20 (depends on 14) The portable infusion pump system of claim 14, wherein the controller device comprises a user interface display device. ### Claim 21 A portable infusion pump system, comprising: a pump device including a pump housing that defines a space to receive a medicine, a drive system positioned in the pump housing to dispense the medicine from the pump device when the medicine is received in the space of the pump housing, a cap device configured to directly attach with the pump housing to enclose the medicine in the pump housing when the medicine is received in the space of the pump housing, and a hydrophobic gasket assembly positioned at an interface between the pump housing and the cap device when the cap device engages with the portable housing, wherein the hydrophobic gasket assembly is configured to permit the passage of air into and out of the pump housing while resisting the passage of liquids into the pump housing, the hydrophobic gasket assembly comprising a hydrophobic member and an elastomeric member, wherein a first major surface of the hydrophobic member is abutted by the elastomeric member; and a controller device removably attachable to the pump housing so as to electrically connect with the pump device, wherein the controller device houses control circuitry configured to communicate with the drive system positioned in the pump housing to control dispensation of the medicine from the pump device, wherein the hydrophobic member comprises the first major surface, a second major surface, and an inner rim that defines an aperture through the hydrophobic member, the aperture of the hydrophobic member being generally aligned with an opening defined by the pump housing when the cap device engages with the portable housing, and wherein the inner rim of the hydrophobic member provides an air path for the passage of air into and out of the pump housing.