# US 8,105,282 B2 · System and method for communication with an infusion device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,105,282 B2 - Document ID: US8105282B2 - Status: Granted - Kind: B2 - Application number: 12/172,906 - Filed: 2008-07-14 - Published: 2009-03-19 - Granted: 2012-01-31 - Earliest claimed: 2007-07-13 - Assignees: Iradimed Corporation - Inventors: Roger Susi; David Hefele - Web page: https://patentgrep.com/patent/US8105282B2 ## CPC - A61M 5/172: electrical or electronic - A61M 5/14228: {with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member} - G16H 20/17: delivered via infusion or injection - A61M 5/16831: {Monitoring, detecting, signalling or eliminating infusion flow anomalies (low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066)} - A61M 5/16854: {by monitoring line pressure} - A61M 5/365: {Air detectors (A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626)} - A61M 2205/3306: Optical measuring means - A61M 2205/3375: Acoustical, e.g. ultrasonic, measuring means - A61M 2205/3561: local, e.g. within room or hospital - A61M 2205/3592: using telemetric means, e.g. radio or optical transmission - 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)} - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA ## Abstract It may desirable to monitor or control a pump remotely. For example, the pump may be positioned near the patient, with remote control or monitoring of the pump occurring in a control room. In one exemplary embodiment, the pump is used in an MRI environment. In another exemplary embodiment, the pump is used in a hyperbaric chamber. The pump may monitor one or more physiological parameters and transmit them to the remote. The pump may also transmit information relating to the pump's operation. The pump may send the device and/or physiological data using one or more packets. The packets may consist of low priority sequential packets and high-priority asynchronous packets. The high-priority packets may enable the real-time monitoring of a patient's heart beat or other physiological parameter. ## Claims ### Claim 1 A remotely-monitored liquid infusion apparatus, comprising: a liquid conduit; a pump disposed within a housing to receive the liquid conduit and to transfer a liquid from a liquid source through the liquid conduit in response to activation of the pump; a wireless radio wave transceiver disposed within an RF-shielded portion of the housing; a sensor configured to provide physiological monitoring of at least one of a heart beat, respiration and blood pressure, wherein the wireless radio wave transceiver is configured to wirelessly transmit, to a remote, high-priority data comprising information corresponding to the occurrence of a physiological event and low-priority data comprising information corresponding to operation of the liquid infusion apparatus, wherein the wireless radio wave transceiver receives, from the remote, data used to control operation of the pump, wherein the data used to control operation of the pump is provided to a pump controller disposed within the RF-shielded portion of the housing, wherein the wireless radio wave transceiver is configured to transmit the low-priority data in packets that are scheduled to be transmitted in substantially sequential order and to transmit the high-priority data in packets that are scheduled to be transmitted shortly after the occurrence of a physiological event, wherein transmission of the high-priority data may temporarily interrupt the substantially sequential transmission of the low-priority data, wherein the RF-shielded portion is configured to pass higher frequency RF signals used for wireless communication while attenuating image-interfering RF signals having a frequency under about 130 MHz, and further wherein the wireless radio wave transceiver is in communication with an antenna mounted outside the RF-shielded portion of the housing. ### Claim 2 (depends on 1) The liquid infusion apparatus of claim 1, wherein said sensor is configured to provide physiological monitoring in substantially real-time. ### Claim 3 (depends on 1) The liquid infusion apparatus of claim 1, wherein said wireless radio wave transceiver is configured to transmit at a guaranteed transmission rate. ### Claim 4 (depends on 1) The liquid infusion apparatus of claim 1, wherein said remote is configured to verify the integrity of received packets. ### Claim 5 (depends on 4) The liquid infusion apparatus of claim 4, wherein said remote comprises a signal integrity meter. ### Claim 6 (depends on 1) The liquid infusion apparatus of claim 1, wherein the liquid infusion apparatus is configured to be positioned within an RF shielded room having operating RF-sensitive magnetic resonance imaging (MRI) equipment without interfering with images captured by the MRI equipment and wherein the remote is configured to be positioned external to the RF shielded room. ### Claim 7 (depends on 1) The liquid infusion apparatus of claim 1, further comprising a filter between the antenna and the wireless radio wave transceiver to inhibit the image interfering lower frequency RF noise having a frequency below about 130 MHz from escaping the shielded housing. ### Claim 8 (depends on 1) The liquid infusion apparatus of claim 1, wherein the data from the remote used to control operation of the pump comprises data used to control the start or stop of fluid flow. ### Claim 9 (depends on 1) The liquid infusion apparatus of claim 1, wherein the data from the remote used to control operation of the pump comprises data used to control the silence of alarms. ### Claim 10 (depends on 1) The liquid infusion apparatus of claim 1, wherein the data from the remote used to control operation of the pump comprises data used to control the setting of a fluid delivery rate or volume. ### Claim 11 (depends on 1) The liquid infusion apparatus of claim 1, wherein the high-priority data transmitted to the remote comprises data indicative of alarm conditions. ### Claim 12 (depends on 1) The liquid infusion apparatus of claim 1, wherein the data transmitted to the remote corresponding to an operation of the liquid infusion apparatus comprises data indicative of a status of a battery at the pump. ### Claim 13 (depends on 1) The liquid infusion apparatus of claim 1, wherein a feed to the antenna comprises a filter that passes the higher frequency wireless communication signals, and wherein the higher frequency wireless communication signals are in the frequency range of 2.400 GHz to 2.480 GHz. ### Claim 14 (depends on 1) The liquid infusion apparatus of claim 1, wherein said physiological event comprises a respiratory event. ### Claim 15 (depends on 1) The liquid infusion apparatus of claim 1, wherein said physiological event comprises an anomalous event or an event that is indicative of a potentially dangerous health situation. ### Claim 16 (depends on 1) The liquid infusion apparatus of claim 1, wherein said high-priority data is scheduled to be transmitted within half a second after the occurrence of the physiological event. ### Claim 17 (depends on 1) The liquid infusion apparatus of claim 1, wherein said high-priority data is scheduled to be transmitted within a tenth of a second after the occurrence of the physiological event. ### Claim 18 (depends on 1) The liquid infusion apparatus of claim 1, wherein said sensor is further configured to provide physiological monitoring of heart rate and blood oxygen saturation. ### Claim 19 (depends on 1) The liquid infusion apparatus of claim 1, wherein said low-priority data further comprises lower-priority physiological information. ### Claim 20 (depends on 1) The liquid infusion apparatus of claim 1, wherein the wireless radio wave transceiver is configured to transmit at a transmission rate of at least 30 packets per second. ### Claim 21 A system, comprising: an IV infusion pump system configured to be positioned within an RF shielded room having operating RF-sensitive magnetic resonance imaging (MRI) equipment without interfering with images captured by the MRI equipment, the IV infusion pump system comprising: a liquid conduit, a pump disposed to receive the liquid conduit and to transfer a liquid from a liquid source through the liquid conduit in response to activation of the pump; a sensor configured to provide physiological monitoring of at least one of a heart beat, respiration and blood pressure; a wireless radio wave transceiver disposed within an RF-shielded portion of the IV infusion pump system; and an antenna in communication with the wireless radio wave transceiver, wherein the antenna is mounted outside the RF-shielded portion of the IV infusion pump system; and a remote configured to communicate with the wireless radio wave transceiver bi-directionally through RF shielding of the RF shielded room, wherein the wireless radio wave transceiver is configured to transmit, to the remote, high-priority data comprising information corresponding to the occurrence of a physiological event and low-priority data comprising information corresponding to operation of the IV infusion pump system, and wherein the wireless radio wave transceiver receives, from the remote, data used to control operation of the pump, further wherein the data used to control operation of the pump is provided to a pump controller disposed within the RF-shielded portion of the IV infusion pump system. ### Claim 22 (depends on 21) The system of claim 21, wherein said wireless radio wave transceiver is configured to transmit the low-priority data in packets that are scheduled to be transmitted in substantially sequential order and to transmit the high-priority data in packets that are scheduled to be transmitted shortly after the occurrence of the physiological event, wherein transmission of the high-priority data may temporarily interrupt the substantially sequential transmission of the low-priority data. ### Claim 23 (depends on 21) The system of claim 21, wherein the IV infusion pump system further comprises a filter configured to prevent image interfering lower frequency RF noise from being transmitted by the wireless radio wave transceiver. ### Claim 24 (depends on 23) The system of claim 23, wherein the image interfering lower frequency RF noise has a frequency below about 130 MHz. ### Claim 25 (depends on 21) The system of claim 21, wherein the wireless radio wave transceiver is configured to communicate bi-directionally with the remote in the presence of other RF transmissions in the same frequency range. ### Claim 26 (depends on 25) The system of claim 25, wherein the wireless radio wave transceiver is configured to communicate bi-directionally with the remote using a bi-directional frequency hopping spread spectrum radio link. ### Claim 27 (depends on 26) The system of claim 26, wherein an alarm occurs when there is a substantial interruption of communication over the bi-directional frequency hopping spread spectrum radio link. ### Claim 28 (depends on 21) The system of claim 21, wherein a feed to the antenna comprises a filter that passes wireless signals in the frequency range of 2.400 GHz to 2.480 GHz. ### Claim 29 (depends on 21) The system of claim 21, wherein a feed to the antenna comprises a filter configured to inhibit image interfering lower frequency RF noise having a frequency below about 130 MHz from escaping the RF-shielded portion of the IV infusion pump system while passing signals at least in the frequency range of 2.400 GHz to 2.480 GHz. ### Claim 30 (depends on 21) The system of claim 21, wherein the physiological event comprises a heart beat or a respiration event. ### Claim 31 (depends on 21) The system of claim 21, wherein said physiological event comprises an anomalous event or an event that is indicative of a potentially dangerous health situation. ### Claim 32 (depends on 21) The system of claim 21, wherein said high-priority data is scheduled to be transmitted within half a second after the occurrence of the physiological event. ### Claim 33 (depends on 21) The system of claim 21, wherein said high-priority data is scheduled to be transmitted within a tenth of a second after the occurrence of the physiological event. ### Claim 34 (depends on 21) The system of claim 21, wherein said sensor is further configured to provide physiological monitoring of heart rate and blood oxygen saturation. ### Claim 35 (depends on 21) The system of claim 21, wherein said low-priority data comprises lower-priority physiological information. ### Claim 36 (depends on 21) The system of claim 21, wherein the wireless radio wave transceiver is configured to transmit at a transmission rate of at least 30 packets per second. ### Claim 37 A system, comprising: an IV infusion pump system configured to be positioned within an RF shielded room having operating RF-sensitive magnetic resonance imaging (MRI) equipment without interfering with images captured by the MRI equipment, the IV infusion pump system comprising: a liquid conduit, a pump disposed within a housing to receive the liquid conduit and to transfer a liquid from a liquid source through the liquid conduit in response to activation of the pump; a sensor configured to provide real-time monitoring of at least one physiological parameter of a patient, wherein the at least one physiological parameter comprises at least one of a heart beat, respiration, and blood pressure of the patient; a wireless radio wave transceiver disposed within the housing, wherein the wireless radio wave transceiver is in communication with an antenna mounted outside the housing and a local system controller disposed within the housing, the local controller capable of receiving input control information from the wireless radio wave transceiver and from input devices on the housing and configured to, upon execution of stored instructions within the local system controller, output control signals to motor drive circuitry configured to operate the pump based, at least in part, on the received input control information; and a wireless remote configured to communicate with the wireless radio wave transceiver bi-directionally through RF shielding of the RF shielded room, wherein the local system controller operates in conjunction with the remote, such that an operator can control the IV infusion pump system liquid infusion apparatus either remotely or locally and such that the pump is capable of operating without the remote or if communication between the remote and the pump is interrupted.