Method and apparatus to detect transponder tagged objects, for example during medical procedures
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G08B-001/00
A61B-019/00
G06K-007/00
G06K-007/10
A61G-013/10
A61G-013/12
출원번호
US-0462734
(2012-05-02)
등록번호
US-8878668
(2014-11-04)
발명자
/ 주소
Blair, William A.
Barnes, Bruce E.
Poirier, David A.
출원인 / 주소
RF Surgical Systems, Inc.
대리인 / 주소
Seed IP Law Group PLLC
인용정보
피인용 횟수 :
3인용 특허 :
221
초록▼
The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas pos
The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.
대표청구항▼
1. An apparatus to detect transponder tagged objects which are used in performing medical procedures, the apparatus comprising: at least three antennas, at least some of the antennas spaced at intervals along at least a portion of a length of a patient support structure that is sized to support a pa
1. An apparatus to detect transponder tagged objects which are used in performing medical procedures, the apparatus comprising: at least three antennas, at least some of the antennas spaced at intervals along at least a portion of a length of a patient support structure that is sized to support a patient; anda control system communicatively coupled to the antennas and configured to successively transmit an interrogation signal via respective ones of at least two of the antennas, and to begin to monitor each of the antennas except the antenna from which a most recent interrogation signal was transmitted for a response to the interrogation signal after the transmission of the interrogation signal, and to end monitoring of the antennas before a transmission of another interrogation signal. 2. The apparatus of claim 1 wherein each of the antennas includes respective antenna coils, a portion of a projected area of each successive one of the antenna coils along the portion of the length of the patient support structure overlapping a portion of a projected area of at least one neighboring one of the antenna coils. 3. The apparatus of claim 1 wherein the at least three antennas includes at least six antennas. 4. A method to detect transponder tagged objects which are used during medical procedures, the method comprising: for each of at least three antennas spaced at intervals along at least a portion of a length of a patient support structure, successively transmitting a number of interrogation signals via respective ones of the antennas;beginning monitoring of each of the antennas except the antenna from which a most recent number of interrogation signals was transmitted for a response to the interrogation signals after the transmitting of the number of interrogation signals; andending the monitoring of the antennas before transmitting another number of interrogation signals via a next one of the antennas. 5. The method of claim 4 wherein successively transmitting a number of interrogation signals via respective ones of the antennas includes transmitting the interrogation signals from all of the antennas, one at a time, and wherein monitoring each of the antennas except the antenna from which a most recent number of interrogation signals was transmitted for a response to the interrogation signals includes monitoring each of the antennas except the antenna from which a most recent number of interrogation signals was transmitted for a response to each of the interrogation signals. 6. An apparatus to detect transponder tagged objects which are used in performing medical procedures, the apparatus comprising: a patient support structure that is sized to support a patient;at least three antennas positioned along at least a portion of a length of the patient support structure, each of the antennas positioned along the length of the patient support structure, the antennas radiolucent to X-ray frequency electromagnetic energy, and each of the antennas having a respective range, the ranges of the antennas in each neighboring pair of antennas at least partially overlapping; anda control system communicatively coupled to the antennas and configured to successively transmit an interrogation signal via respective ones of the antennas, to begin to monitor each of the antennas except the antenna from which a most recent interrogation signal was transmitted for a response to the interrogation signal after the transmission of the interrogation signal, and to end monitoring of the antennas before a transmission of another interrogation signal. 7. The apparatus of claim 6 wherein the patient support structure is elongated having a longitudinal axis and the antennas are coil antennas, at least some of the coil antennas arranged successively along the longitudinal axis. 8. The apparatus of claim 7 wherein a portion of each successive one of the coil antennas is arranged successively along the longitudinal axis of the patient support structure with a range that overlaps a portion of a range of at least one neighboring one of the antenna coils. 9. The apparatus of claim 6 wherein the antennas are carried by the patient support structure on, in or under a patient support surface, and further comprising: at least one pad that overlies at least one of the antennas, the at least one pad radiolucent to X-ray frequency electromagnetic energy. 10. The apparatus of claim 6, further comprising: a pedestal that supports the patient support structure, wherein the control system is at least partially housed in the pedestal. 11. The apparatus of claim 6, further comprising: at least one antenna port carried by the patient support structure, the at least one antenna port communicatively coupled to at least one of the antennas and communicatively coupleable to the control system. 12. The apparatus of claim 6, further comprising: at least one visual indicator carried by the patient support structure, the at least one visual indicator communicatively coupled to the control system and operable thereby to produce a visual indication indicative of the response to the interrogation signal; andat least one user switch carried by the patient support structure, the at least one user switch communicatively coupled to the control system and operable thereby to control at least one aspect of an operation of the control system. 13. The apparatus of claim 6 wherein the patient support structure is at least one of a pad or a mattress that carries the antennas on at least one of an exterior or an interior thereof, and the at least one of the pad or the mattress including at least one communications interface to provide selectively decoupleable communicative coupling with at least some of the antennas. 14. The apparatus of claim 13 wherein the at least one of the pad or the mattress has a compliant inner portion and an outer cover that at least partially surrounds the compliant inner portion and which is impervious to bodily fluids, the compliant inner portion and the outer cover comprising radiolucent materials that can withstand multiple sterilization cycles. 15. The apparatus of claim 6, further comprising: a number of sensors carried by the patient support structure, the sensors responsive to a respective force exerted by a respective portion of the patient. 16. The apparatus of claim 15 wherein each of the sensors is communicatively coupled to provide a signal indicative of the respective force exerted by the respective portion of the patient. 17. The apparatus of claim 6, further comprising: a gel carried by the patient support structure at least at a number of locations that correspond to a number of defined locations of the patient when the patient is supported by the patient support structure, the gel radiolucent to X-ray frequency electromagnetic energy. 18. An apparatus to detect transponder tagged objects which are used in performing medical procedures, the apparatus comprising: a plurality of antennas including at least a first antenna and a second antenna, at least some of the antennas spaced at intervals along at least a portion of a length of a patient support structure that is sized to support a patient; anda control system communicatively coupled to the antennas and that causes transmission of interrogation signals successively via respective ones of the antennas, the control system which transmits the interrogation signals via the first antenna and monitors each of the antennas except the first antenna for a response to the interrogation signals in a period after a transmission of the interrogation signals via the first antenna and before another transmission of the interrogation signals, and which transmits the interrogation signals via the second antenna and monitors all of the antennas except the second antenna for the response to the interrogation signals in a period after a transmission of the interrogation signals via the second antenna and before another transmission of the interrogation signals.
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