San Clemente, CA, United States
San Clemente, CA, United States

Cameron Health is a medical device developer based in San Clemente, California, USA. Cameron Health has its European office, Cameron Health BV, in Arnhem, The Netherlands. The privately held company's focus is on a new generation of minimally invasive implantable cardioverter-defibrillator which they call a Subcutaneous Implantable Defibrillator . Cameron Health's approach avoids implanting transvenous leads into the heart, which has been the usual procedure for cardiac devices. Instead, the Cameron ICD is entirely implanted outside the thoracic wall. Wikipedia.

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Self-correlation enhancements and implementations are described. In particular, certain examples demonstrate the use of a peak selector to identify peaks of a self-correlation function which serve as candidate cardiac rates for an implantable medical device. The approach may enable an alternative calculation of cardiac rate in an implantable medical device as a stand-alone rate detector or as a double-check of other rate calculations.


An implantable medical device is disclosed, the device comprising electrodes for sensing cardiac signals (320), self-correlation means (322) for generating a self-correlation function from the sensed cardiac signals and analysis means (324) for determining one or more estimates of cardiac rate (326) using outputs of the self-correlation means. Peak selector means (340) and tracking means (342) may also be included as secondary elements. The device may provide an alternative calculation of cardiac rate as a stand-alone rate detector or as a device for double-checking other rate calculations.


An implantable medical device is disclosed, the device comprising electrodes for sensing cardiac signals, self-correlation means for generating a self-correlation function from the sensed cardiac signals and peak selector means for identifying amplitude peaks (150) in the self-correlation function, for selecting candidate peaks (154, 158) and for determining (168) whether any candidate peak is suitable for use in estimating cardiac rate. The device may provide an alternative calculation of cardiac rate as a stand-alone rate detector or as a device for double-checking other rate calculations.


In a subcutaneous implantable cardioverter/defibrillator, cardiac arrhythmias are detected to determine necessary therapeutic action. Cardiac signal information is sensed from far field electrodes implanted in a patient. The sensed cardiac signal information is then amplified and filtered. Parameters such as rate, QRS pulse width, cardiac QRS slew rate, amplitude and stability measures of these parameters from the filtered cardiac signal information are measured, processed and integrated to determine if the cardioverter/defibrillator needs to initiate therapeutic action.


The present invention is directed toward a detection architecture for use in implantable cardiac rhythm devices. The detection architecture of the present invention provides methods and devices for discriminating between arrhythmias. Moreover, by exploiting the enhanced specificity in the origin of the identified arrhythmia, the detection architecture can better discriminate between rhythms appropriate for device therapy and those that are not.


The present invention is directed toward a detection architecture for use in implantable cardiac rhythm devices. The detection architecture of the present invention provides methods and devices for discriminating between arrhythmias. Moreover, by exploiting the enhanced specificity in the origin of the identified arrhythmia, the detection architecture can better discriminate between rhythms appropriate for device therapy and those that are not.


Patent
Cameron Health | Date: 2016-12-19

Implantable medical device systems and methods configured to use a detection profile selected from among a plurality of detection profiles to define a detection threshold for identifying cardiac events, in which a close call definition is used to determine which of the plurality of detection profiles is to be chosen. Upon identifying a close call, in which an overdetection nearly occurred but did not actually take place, a relatively less sensitive detection profile is chosen.


Patent
Cameron Health | Date: 2017-01-11

An implantable medical device including a coating and associated method are disclosed. The implantable medical device can include a metallic housing. An adhesion layer formed on at least a portion of the metallic housing. A titanium nitride base layer formed on at least a portion of the adhesion layer. An intermediate layer formed on at least a portion of the titanium nitride base layer, and a titanium nitride top layer formed on at least a portion of the intermediate layer.


Patent
Cameron Health | Date: 2016-07-13

Methods and tool kits for implanting a lead subcutaneously. Examples include tool kits and methods for establishing first and second subcutaneous tunnels at an angle relative to one another to facilitate introduction of a lead to the subcutaneous space. In an example, a first insertion tool is used to establish a first subcutaneous tunnel, and a second insertion tool, with or without the use of a blunt dissector, sheath, guidewire, or steering mechanism, is used to initiate or form the second subcutaneous tunnel. Such methods and tool kits may reduce the number of incisions needed to implant a subcutaneous lead along a subcutaneous path having a curve therein.


Patent
Cameron Health | Date: 2016-02-24

Electrical circuit componentry is switchable into a defibrillator circuit to deliver a constant pacing current to a patient. The circuitry may include a constant current source inserted in a leg of the defibrillator circuit or a resistor of selected value inserted between a high voltage source and the high side of a defibrillator circuit.

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