Abstract: Systems and methods are provided for an antenna coupler mechanism. The antenna coupler mechanism includes a first tuning leg, a second tuning leg, and a bottom plate. The first tuning leg includes a first inductive circuit element, the first tuning leg being configured to accept a radio frequency device in series with the first inductive circuit element. The second tuning leg includes a second inductive circuit element and a capacitive circuit element connected in series, the second tuning leg being connected electrically in parallel with the first tuning leg. In addition, the bottom plate includes a third inductive circuit element connected electrically in parallel with the first tuning leg and connected electrically in parallel with the second tuning leg, the bottom plate being configured to couple energy into a nearby structure.

Abstract: Systems and methods are provided for an antenna coupler mechanism. The antenna coupler mechanism includes a first tuning leg, a second tuning leg, and a bottom plate. The first tuning leg includes a first inductive circuit element, the first tuning leg being configured to accept a radio frequency device in series with the first inductive circuit element. The second tuning leg includes a second inductive circuit element and a capacitive circuit element connected in series, the second tuning leg being connected electrically in parallel with the first tuning leg. In addition, the bottom plate includes a third inductive circuit element connected electrically in parallel with the first tuning leg and connected electrically in parallel with the second tuning leg, the bottom plate being configured to couple energy into a nearby structure.

Abstract: Systems and methods are provided for counting sharps returned to a container. An example method of counting sharps returned to a container having at least two layers of penetrable conductive material includes periodically checking a plurality of circuits formed by the first and second layers of material to determine if each circuit is open or closed, and keeping a count of the number of closed circuits.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Systems and methods are provided for an antenna coupler mechanism. The antenna coupler mechanism includes a first tuning leg, a second tuning leg, and a bottom plate. The first tuning leg includes a first inductive circuit element, the first tuning leg being configured to accept a radio frequency device in series with the first inductive circuit element. The second tuning leg includes a second inductive circuit element and a capacitive circuit element connected in series, the second tuning leg being connected electrically in parallel with the first tuning leg. In addition, the bottom plate includes a third inductive circuit element connected electrically in parallel with the first tuning leg and connected electrically in parallel with the second tuning leg, the bottom plate being configured to couple energy into a nearby structure.

Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.

Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.

Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.

Abstract: In accordance with the teachings described herein, systems and methods are provided for counting sharps returned to a container. An example method of counting sharps returned to a container having at least two layers of penetrable conductive material includes periodically checking a plurality of circuits formed by the first and second layers of material to determine if each circuit is open or closed, and keeping a count of the number of closed circuits.

Abstract: Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.

Abstract: In accordance with the teachings described herein, systems and methods are provided for counting sharps returned to a container. An example method of counting sharps returned to a container having at least two layers of penetrable conductive material includes periodically checking a plurality of circuits formed by the first and second layers of material to determine if each circuit is open or closed, and keeping a count of the number of closed circuits.

Abstract: Apparatus and methods for identifying and counting objects having identifiers entering and exiting a surgical field are provided. In one embodiment, the apparatus has an entry scanner, a hand held scanner and an exit scanner for generating a detection field and for receiving data which identifies said objects. In another embodiment, the apparatus has a plurality of lower antennas and an upper antenna for generating a detection field and for receiving data which identifies said objects. Various surgical devices with identifiers and methods for preventing electromagnetic coupling between and protecting objects and identifier are also provided. The invention further provides apparatus and methods comprising a handheld scanner and a mat adapted to underlie a patient during a surgical procedure.