Codman Neuro Sciences Sarl Patent applications |
Patent application number | Title | Published |
20130313916 | SYSTEM FOR PROTECTING CIRCUITRY IN HIGH-TEMPERATURE ENVIRONMENTS - An electrical device for performing a particular function includes a system circuit for performing the function, and a dedicated power supply for providing power to the circuit. Both the system circuit and the power supply are hermetically sealed within a housing. The device within the housing is intended to be sterilized using high temperature, reaching a sterilization temperature. According to the invention, the device includes a thermal switch which is electrically connected between the system circuit and the power supply. With the present invention, the electrical components of a device are automatically protected from thermal damage during sterilization. | 11-28-2013 |
20130257465 | Reading Device in Wired Communication With a Probe Having an Embedded Memory Device - A monitoring system including a reading device electrically connected to a probe via a wired interface. The probe has a physiological sensor/transducer configured as a Wheatstone resistive bridge balancing circuit. Integrated within the housing of the probe to prohibit separation during use by a user is a memory device arranged in parallel with the sensor. Communication between the reading device and the probe occurs via a wired interface utilizing a same number of electrical wires between the reading device and the Wheatstone as would be required without the memory device. Control circuitry selects between one of two modes for accessing either data detected by the sensor or the memory device. | 10-03-2013 |
20130125659 | Apparatus and Method for Minimizing Drift of a Piezo-Resistive Pressure Sensor Due to the Progressive Release of Mechanical Stress Over Time - An absolute piezo-resistive pressure sensor system and method employing multiple pressure sensing elements operating simultaneously to detect pressure. Both pressure sensing elements being subject to a common reference pressure within a sealed cavity. The first pressure sensing element detecting an offset voltage resulting from the progressive release of mechanical stress at an assembly interface between the sensing element and a base plate on which the sensing elements are assembled. Electronic circuitry compensates the pressure measured by the second pressure sensing element based on the offset voltage detected by the first pressure sensing element. | 05-23-2013 |
20130096538 | IMPLANTABLE PUMP WITH RESERVOIR LEVEL DETECTOR - An implantable pump includes a base plate and a can that are parts of the pump housing. The base plate bottom divides the housing into a first electronics chamber and a second chamber. A bellows mechanism is connected to the base plate and is disposed within the second chamber. The bellow mechanism has an expandable sidewall and a bottom plate. The bellow mechanism divides the second chamber into a medicament receiving portion and a non-medicament-receiving portion. The bellow mechanism has an intermediate plate disposed within the medicament-receiving portion. A coil is disposed in a recess on the lower surface of the base plate, and the coil is spaced from an internal wall of the recess. The amount of fluid remaining in the implantable pump can be monitored by energizing the coil. A primary magnetic field is generated by the energized coil. A secondary magnetic field, which is dependant on the position of the bottom and intermediate plate of the bellow mechanism, couples back to the primary field affecting the electrical characteristics of the coil. The amount of fluid remaining in the reservoir is determined based on the resulting changes in the electrical characteristics of the coil. | 04-18-2013 |
20120323161 | Electrokinetic Actuator to Titrate Fluid Flow - An electrokinetic actuator for fluid flow titration including two chambers separated from one another by a porous dielectric disposed therebetween. A plurality of electrodes are disposed about a perimeter of the first and second chambers. Polar electrolyte disposed within the actuator is able to pass through the porous dielectric between the first and second chambers upon the application of an electric field or electric potential to the plural electrodes. A mechanical valve actuation mechanism connected to the second chamber allows for fine titration of fluid flow using electro-osmosis, including full-flow and/or complete cut-off. The polar electrolyte is isolated to prohibit intermixing with a fluid being titrated such as cerebrospinal fluid. | 12-20-2012 |
20120283703 | Flow Rate Accuracy of a Fluidic Delivery System - Improving the accuracy of the flow rate of a valve in a fluidic delivery device in which a desired flow rate may be achieved by varying the duty cycle of the valve. The flow rate of fluid delivery from the valve over its lifetime is stabilized by minimizing the voltage OPENING time of the valve to account for valve and piezoelectric actuator drift. Also, the valve OPENING time of one or more fluidic parameters that impact on the flow rate delivery by the valve and differ among fluidic delivery devices is compensated to optimize the flow rate accuracy. | 11-08-2012 |
20120262273 | Universal External Control Device for Use by Multiple Conditional Access Users With Varying Access to Functionality of an Implantable Medical Device - A universal external control device for use by multiple conditional access users with varying access to functionality of an implantable medical device in wireless communication therewith. Circuitry associated with the external control device is used to uniquely identify each of the conditional access users via an access device such as a key or card. Access to functionality of the implantable medical device is restricted by the universal external control device based on the conditional access user identified by the access device. | 10-18-2012 |
20120247227 | Monitoring and Recording Implantable Silicon Active Pressure Transducer - An implantable active pressure transducer including a pressure sensing element and associated sensor circuitry together enclosed within an innermost glass packaging. The pressure sensing element is anodically bonded to the innermost packaging substantially aligned with an opening defined therein. An outermost biocornpatible metal packaging forms a cavity divided into first and second chambers by an intermediate partition. The innermost packaging is disposed within the first chamber without physically directly contacting or being fixed to the outermost packaging. A barrier plate is hermetically sealed to the intermediate partition to hermetically isolate the battery and communication circuitry from a pressure transmitting fluid. Inductive coupling is used to communicate data detected by the pressure sensing element internally within the implant. | 10-04-2012 |
20110320049 | Drug component admixture library for a drug infusion delivery system - Minimizing improper dosage of a drug admixture (including a single primary drug component and at least one second drug component). For each drug component in the drug admixture, receiving a name of the drug component along with its dosage unit, a maximum dose warning level and a maximum concentration warning level. Receiving a concentration for each of the single primary drug component and the at least one secondary drug component; and a dose setting of only the primary drug component. Automatically calculating a dose of each of the at least one secondary drug component. Generating an alert when: (i) the received dose setting of the primary drug component or calculated dose setting of the at least one secondary drug component exceeds the dose warning level; or (ii) the received concentration of the primary drug component or the at least one secondary drug component exceeds the concentration warning level. | 12-29-2011 |
20110257705 | CONTROL UNIT HAVING A DEPLOYABLE ANTENNA - A control unit for an implantable medical device includes a housing and electronics within the housing. The electronics control an RF emission from the control unit. An antenna is pivotably connected to the housing. The antenna is movable between a stowed position where RF emission from the antenna is prevented and a deployed position where RF emission from the antenna is permitted. To use the external control unit to effect communication between an external control unit and an implanted medical device, the user places the external control unit within electronic communication range of the implanted medical device. The control unit antenna is moved from the stowed position to a deployed position where RF emission from the antenna is permitted. RF waves are emitted from the antenna to establish communication between the external control unit and the implanted medical device. | 10-20-2011 |
20110209553 | Apparatus and method for minimizing drift of a piezo-resistive pressure sensors due to progressive release of mechanical stress over time - An absolute piezo-resistive pressure sensor system and method employing multiple pressure sensing elements operating simultaneously to detect pressure. Both pressure sensing elements being subject to a common reference pressure within a sealed cavity. The first pressure sensing element detecting an offset voltage resulting from the progressive release of mechanical stress at an assembly interface between the sensing element and a base plate on which the sensing elements are assembled. Electronic circuitry compensates the pressure measured by the second pressure sensing element based on the offset voltage detected by the first pressure sensing element. | 09-01-2011 |
20110160638 | Electrokinetic actuator to titrate fluid flow - An electrokinetic actuator for fluid flow titration including two chambers separated from one another by a porous dielectric disposed therebetween. A plurality of electrodes are disposed about a perimeter of the first and second chambers. Polar electrolyte disposed within the actuator is able to pass through the porous dielectric between the first and second chambers upon the application of an electric field or electric potential to the plural electrodes. A mechanical valve actuation mechanism connected to the second chamber allows for fine titration of fluid flow using electro-osmosis, including full-flow and/or complete cut-off. The polar electrolyte is isolated to prohibit intermixing with a fluid being titrated (such as cerebrospinal fluid). | 06-30-2011 |
20110105993 | Tools and Methods for Programming an Implantable Valve - Integrated tools for noninvasively reading and adjusting an implantable, magnetically adjustable valve, and methods of use are disclosed. The tools include magnetic or electronic reading of the valve, and magnetic or electromagnetic adjustment of the valve. In use, the tools are positioned above or in contact with the patient's skin, in proximity to the valve. | 05-05-2011 |
20110105992 | Tools and methods for programming an implantable valve - Integrated tools for noninvasively reading and adjusting an implantable, magnetically adjustable valve, and methods of use are disclosed. The tools include magnetic or electronic reading of the valve, and magnetic or electromagnetic adjustment of the valve. In use, the tools are positioned above or in contact with the patient's skin, in proximity to the valve. | 05-05-2011 |
20110105991 | Tools and methods for programming an implantable valve - Integrated tools for noninvasively reading and adjusting an implantable, magnetically adjustable valve, and methods of use are disclosed. The tools include magnetic or electronic reading of the valve, and magnetic or electromagnetic adjustment of the valve. In use, the tools are positioned above or in contact with the patient's skin, in proximity to the valve. | 05-05-2011 |
20110021887 | METHOD FOR THE CALIBRATION OF AN IMPLANTABLE SENSOR - An implant includes a processor, RF communication circuitry, optical communication circuitry, a power source and a memory, all of which being hermetically sealed within a housing having a transparent window. Sensor readings are transmitted by RF using the RF communication circuitry to a remote reader after receiving interrogation signals from the reader. During calibration of the sensor, corrective coefficients are calculated by comparing actual sensor pressure readings with known pressure readings. The corrective coefficients are transmitted to the memory of the control circuitry using optical communication wherein modulated light is transmitted through the transparent window of the housing to the photo-detector. | 01-27-2011 |
20100179477 | System for Protecting Circuitry in High-Temperature Environments - An electrical device for performing a particular function includes a system circuit for performing the function, and a dedicated power supply for providing power to the circuit. Both the system circuit and the power supply are hermetically sealed within a housing. The device within the housing is intended to be sterilized using high temperature, reaching a sterilization temperature. According to the invention, the device includes a thermal switch which is electrically connected between the system circuit and the power supply. The thermal switch is switchable between an open position wherein the system circuit is electrically isolated from the power supply and receives no power therefrom and a closed position wherein the system circuit is electrically connected to the power supply and receives power therefrom. The thermal switch switches from its closed position to its open position in response to the temperature within the housing rising to a predetermined switch-open temperature value. The thermal switch thereafter switches from its open position to its closed position in response to the temperature within the housing cooling to a switch-closed temperature value. With the present invention, the electrical components of a device are automatically protected from thermal damage during sterilization. | 07-15-2010 |
20100114060 | System and method for controlling an implantable medical device subject to magnetic field or radio frequency exposure - A system for controlling an implantable medical device (e.g., a drug delivery device) susceptible to malfunctioning during exposure to a magnetic field and/or Radio Frequency field (e.g., during a magnetic resonance imaging procedure) and a method for operating the same. Exposure of the implantable device to the magnetic field and/or the Radio Frequency field is detected using the sensing device. When the detected magnetic field and/or Radio Frequency field exceeds a corresponding predetermined threshold level, an input signal is generated at the microcontroller. In response to the generated input signal, the microcontroller automatically triggers (i) a safety mode enabling a predetermined safety mode operation that alters some operation, without ceasing all operation, of the implantable medical device and/or (ii) after expiration of a predetermined safety mode time interval when the at least one field being detected falls below its corresponding predetermined threshold level or a predetermined period of time elapses, a self testing mode enabling a predetermined self testing operation to verify proper operation of the implantable medical device. Preferably, both the safety and self testing modes are automatically triggered. | 05-06-2010 |
20100100203 | Insuring proper communication with chosen implant among multiple implants in proximity to one another - A system and method for restricting proper regulation by a control unit of only the functionality of the targeted device whose operations are intended to be programmed so as to insure no adverse regulation of functionality with respect to any other non-targeted device. A memory associated with each of the control device and the targeted device stores a unique identification assigned to that targeted device compressed using an error detection scheme, wherein the compressed unique identification has a length less than or equal to that of each of the messages. Circuitry, such as a logic function, mixes the stored compressed unique identification with each message transmitted between the two devices subsequent to receipt of a response signal from the targeted device to an interrogation command from the control device to insure proper communication between the control device and the targeted device. | 04-22-2010 |
20100069891 | Implantable Pump With Integrated Refill Detection - A refill port for an implantable device with integral refill instrument placement detection includes a pierceable septum and a detector. The pierceable septum is disposed on the refill port for admitting a refill instrument has a first outer surface at least a portion of which is exposed outside the refill port and a second inner surface at least a portion of which is exposed inside the refill port. The detector is disposed inside the refill port with respect to the second inner surface of the pierceable septum for determining the placement of a refill instrument within the refill port. The refill port can be provided on a refillable implantable drug delivery pump having control electronics so that the detector can trigger pump test features of the control electronics upon placement or removal of a refill instrument from the port. | 03-18-2010 |
20090210033 | Implant revision recognition by exchanging the revision data during transmission - A system and method for establishing communication among a control device and an implantable medical device. The implantable medical device transmits to the control device identification information including a unique identification number associated with the implantable medical device and/or a current version of application software currently being utilized by the implantable medical device. Based on the extracted identification information, the control device correlates thereto a version of the application software from among the multiple versions of application software associated with the control device that is compatible with the recognized version of the application software currently being utilized by the implantable medical device. | 08-20-2009 |
20090138739 | Circuitry for optimization of power consumption in a system employling multiple electronic components, one of which is always powered on - Circuitry for conserving power in a system employing multiple electronic components of which a first electronic component operates at a first frequency and is continuously powered on by a power source. The system further includes a second electronic component operating at a second frequency different than that of the first frequency of the first electric component, the second electronic component being maintained in a powered off state in which no energy whatsoever is consumed by the second electronic component until energized in response to a power enabling signal generated by the first electronic component based on demand of the particular function to be performed by the second electronic component. The first and second electronic components may be processors, wherein the frequency of the first processor is lower than that of the second processor. | 05-28-2009 |