The present invention relates generally to communication and data entry devices, and particularly to devices for use by personnel such as doctors and nurses in a hospital environment. More particularly, the present invention relates to communication devices carried by medical caregivers for receiving signals directed to members of a hospital team and data entry devices for processing voice information dictated by a caregiver.
Communication devices such as pagers and data entry devices such as dictating machines are known. Caregivers in hospital environments use such devices routinely to receive messages and to record information about patients. For example, doctors and registered nurses may dictate patient status reports or data observed during surgical procedures. In addition, when a team of doctors and nurses are needed in an operating room, separate paging signals are sometimes sent to the pagers of each team member to assemble the team. Hospitals may charge patients on an hourly basis for some medical services and for use of hospital resources such as operating rooms. Therefore, decreasing the time spent assembling teams, decreasing the time spent by team members performing tasks such as dictating patient reports, and decreasing the number of personnel needed on a team each result in decreased medical costs. Furthermore, rapid assembly of a team can be of critical importance when a patient has a life threatening injury or medical condition that requires prompt medical attention.
According to aspects of the present invention, a system for paging members of a medical team includes a paging signal dispatch system and a plurality of pagers. The paging signal dispatch system includes a transmitter configured to broadcast a paging signal configured to page a plurality of pagers simultaneously and a receiver configured to receive a page acknowledge return signal from each of the plurality of pagers. Each pager includes a receiver configured to receive the paging signal, a transmitter configured to send a page acknowledge return signal, and a user input device coupled to the transmitter. The pager is configured to send the page acknowledge return signal based on an input to the user input device.
In illustrative embodiments, the dispatch system transmitter is configured to send a paging signal for direct reception by pager receivers that are within a predetermined distance of the dispatch system. The dispatch system transmitter can be configured to send a paging signal for indirect reception through at least one paging signal repeater by pager receivers that are outside a predetermined distance of the dispatch system. The pager transmitter can be configured to send a page acknowledge return signal for direct reception by the dispatch system receiver. The pager transmitter can be configured to send a page acknowledge return signal for indirect reception through at least one signal repeater by the dispatch system receiver. The dispatch system can be configured to indicate whether each of the plurality has acknowledged a paging signal within a predefined amount of time after sending the paging signal.
In illustrative embodiments, the dispatch system transmitter is configured to broadcast a first paging signal configured to page a first plurality of pagers simultaneously and second paging signal configured to page a second plurality of pagers simultaneously and a receiver configured to receive a page acknowledge return signal from each of the first and second pluralities of pagers. The plurality of pagers includes first and second pluralities of pagers. Each pager includes a receiver configured to receive one of the first and second paging signals, a transmitter configured to send a page acknowledge return signal, and a user input device coupled to the transmitter. Each pager is configured to send the page acknowledge return signal based on an input to the user input device. The dispatch system transmitter is configured to broadcast the first paging signal at a first frequency and the second paging signal at a second frequency different from the first frequency.
In illustrative embodiments, each pager includes a radio transceiver for two-way communication with other pagers. A first plurality of pagers can be configured to communicate at a first frequency and a second plurality of pagers configured to communicate at a second frequency different from the first frequency.
In illustrative embodiments, each pager includes an infrared transmitter configured to send an identifying signal. The dispatch system includes a plurality of infrared receivers configured to receive the identifying signals and is configured to determine locations of pagers based on reception of the identifying signals. The dispatch system is configured to identify a location of a pager that has not acknowledged a paging signal within a predefined amount of time after sending the paging signal. The dispatch system can further be configured to identify a location of a substitute pager if a pager has not acknowledged a paging signal within a predefined amount of time after sending the paging signal, and to send a paging signal to the substitute pager.
In illustrative embodiments, the pager includes a voice recording device. The voice recording device can be voice activated. The recording device can store data in an digital format, and the pager can be configured to transmit the data to a remote system, for example over a wireless communication link.
In illustrative embodiments, the pager includes a display and is configured to store information related to a patient for output on the display. The pager can include a user input device to enter patient information and be configured to transmit entered information to a remote system. The pager can further be configured to receive patient information from a remote system for output on the display.
In illustrative embodiments, the pager includes a cellular telephone transceiver. The pager can be configured to couple to a caregiver's wrist, or to a belt around a caregiver's waist, or to a strap around a caregiver's neck. A flexible sterile sheath can be configured to surround the pager.
According to other aspects of the invention, an integrated personal communication and data entry device includes a portable housing and an internal controller. A paging device and a voice recording device are both coupled to the controller. Either the paging device or the voice recording device can provide the controller. The integrated device can further include a cellular telephone transceiver and/or a radio transceiver for two-way communication coupled to the controller. The voice recording device can be configured to digitize voice data and to transform the digitized voice data into computer readable text data.
According to illustrative embodiments, the integrated device further includes a clock coupled to the controller and the voice recording device is configured to record a time and date from the clock corresponding to recorded voice data. The integrated device can include an input device to enter a user identification code and the voice recording device can be configured to record voice data only after entry of a predefined user identification code. The voice recording device can be configured to record voice data only if the voice data corresponds to predefined voice print information. The voice recording device can be coupled to a transceiver configured to transmit voice information over a wireless communication link to a hospital data system. The voice recording device can be configured to transmit patient identification information to the hospital data system to enable storage of voice information from the voice recording device related to a patient on the hospital data system.
According to illustrative embodiments, the integrated device includes an input device coupled to the housing, an output device coupled to the housing, and a transceiver coupled to the housing to send and receive information over a wireless communication link to a hospital data system. The integrated device is configured to accept patient identification information from the input device, to send the patient identification information to the hospital data system, to receive patient data from the hospital data system based on the patient identification information, and to display the patient data on the output device. The voice recording device can provide the input device. The output device can be a backlit liquid crystal display. The integrated device can be configured to provide at least one prompt on the output device for entry of patient status information based on patient data received from the hospital system. The integrated device can be configured to provide at least one prompt on the output device to record at least one predetermined category of patient status information.
According to still other aspects of the invention, an integrated personal communication and data entry device includes a portable housing, an internal controller, and a paging device and a cellular telephone transceiver coupled to the controller. The integrated device can further include a radio transceiver for two-way communication, an infrared transmitter, and/or a voice recording device
According to yet still other aspects of the invention, an integrated personal communication and data entry device includes a portable housing, an internal controller, and a paging device and a radio transceiver for two-way communication coupled to the controller. The integrated device can further include a cellular telephone transceiver, an infrared transmitter, and/or a voice recording device.
According to other aspects of the invention, an integrated personal communication and data entry device includes a portable housing, an internal controller, an a paging device and an infrared transmitter coupled to the controller. The integrated device can further include a cellular telephone transceiver, a radio transceiver for two-way communication, and/or a voice recording device.
According to still other aspects of the invention, a voice operated controller for medical equipment includes a voice recorder configured to digitize and recognize voice commands and a transmitter configured to send commands recognized by the voice recorder to a medical equipment controller. The controller can be configured to send commands over a wireless communication link. The controller can include a housing coupled to the voice recorder and transmitter that is configured to be coupled to a caregiver's head to position an input device for the voice recorder near the caregiver's mouth.
Additional features of the invention will become apparent to those skilled in the art upon consideration of the following detailed description of the presently perceived best mode of carrying out the invention.
The detailed description particularly refers to the accompanying figures in which:
An integrated personal communication and data entry device 10 includes a housing 12 configured to be coupled to a caregiver's wrist, a display 14, and a pair of buttons 16, 18 as shown in FIG. 1. As discussed in more detail below, in various embodiments, integrated device 10 includes some or all of the following within compact housing 12: a paging device, a voice recording device, a cellular telephone device, and a radio communication device. By merging several functions into a single integrated device 10, the present invention increases the efficiency of medical caregivers and reduces costs associated with providing medical services.
Advances in miniaturization of electronic components allows integrated communication and data entry device 10 to contain in a compact package the electronic components needed to perform multiple functions. For example, a single integrated circuit can digitize and store voice data for subsequent access or processing. Infrared transmitters allow for real-time monitoring of the location of device 10 throughout a building equipped with infrared receivers. Commercially available radio transceivers provide two-way “walkie talkie” communication functions in a very small, power efficient package. Pager technology likewise provides for diminutive packaging, and is readily adapted to signal multiple members of a medical team simultaneously. Integrating these various technologies, each of which by itself is known to those skilled in the art, will benefit medical service providers and patients alike by increasing the efficiency of providing medical services.
Integrated device 10 provides a convenient, highly portable apparatus for use by medical caregivers as shown in
An illustrative architecture for integrated device 10 includes a controller 26 coupled to several interface modules as shown in FIG. 9. Controller 26 can be a microprocessor or microcontroller, with either on-board or separate memory, or it can be any type of specialized or off-the-shelf component, such as a high speed digital signal processor, that includes or provides for integrating the various functions as required for device 10. Those skilled in the art understand that there are many known techniques for providing or integrating the various functions as discussed below.
Controller 26 is coupled to a voice recording module 28, a cellular paging and telephony module 30, a radio communication module 32, a wireless data communication module 34, a user input/output module 36, and an infrared transmitter module 38. A power supply 27, such as a battery, is included in device 10 and coupled to one or more of controller 26 and modules 30, 32, 34, 36, 38 as shown, for example, in FIG. 9. Those skilled in electronics understand that any number or portions of these modules can be provided by a single module or by controller 26, and that these modules can be cross-coupled as needed. For example, common circuitry for processing voice data is most conveniently provided by a microphone input included in user input/output module 36 and shared directly with voice recording, cellular paging and telephony, and radio communication modules 28, 30, 32. Similarly, radio and data communication modules 32, 34 can be provided by a single module, voice recording can be handled by software provided in controller 26, etc.
Due to high costs associated with medical services provided by teams of caregivers, such as a surgical team, there are tremendous cost savings available by reducing the amount of time needed in assembling such teams. The present invention addresses this issue as shown in
Paging signal dispatch system 40 includes a transmitter 42 for sending paging signals as well as a receiver 44 for receiving page acknowledge return signals from each of the plurality of integrated devices 10. Transmitter 42 can be configured to send as many different paging signals as there are teams defined. The paging signal can be a direct, short-range radio frequency signal if all devices 10 are relatively nearby, such as within a hospital complex, or it can be an indirect, or repeated signal generated by a repeater such as is used by conventional cellular or telephony based paging systems to reach personnel who may be on call at unknown locations, or it can be a combination of the two types of signals.
In order to expedite assembly of a medical team, an acknowledgment from each member that a paging signal has been received is used. Again, as with the paging signal itself, the acknowledge return signal can be implemented in a variety of ways, such as by a direct, short-range radio frequency signal within the same complex as dispatch system 40 using either radio or data communication module 32, 34, or the acknowledge return signal can come as a return telephone call over a cellular network using cellular paging and telephony module 30, etc.
Referring to
Referring back to
When dispatch system 40 detects a failure to acknowledge a paging signal, it can provide the location of the non-acknowledging device 10 via an operator interface 48. Alternatively, a backup team member can be identified by tracking the locations of potential replacements and identifying one that meets specified criteria, such as proximity to the needed location or having a known availability status, etc. The paging dispatch system 40 can automatically page the replacement team member, or provide location information so that a critical team member can be tracked down manually, or provide location information on both the non-acknowledging team member and alternative replacements, etc. Operator interface 48 can be a provided as a visual, e.g., textual and graphical interface, or it can be an electronic data interface to another system.
Integrated device 10 further enhances communication between members of a medical team by providing for two-way radio communication using module 32. Again, these RF technologies are well understood in the electronic arts. Integrated devices 10 allocated to different teams are configured to transmit on different predefined frequencies so that teams do not interfere with each other.
As mentioned above, integrated device 10 includes voice recording module 28. Once again, such technologies are well known to those in the art and can be implemented with a single integrated circuit, or can be included as a function of a digital signal processor that implements other functions of device 10, etc. In order to facilitate hands-free operation of device 10, voice recording module 28 can be configured to be voice-activated. Using techniques as are known in the art, voice recording module 28 can respond only to the appropriate voice print, or can be configured to require an identification number before providing voice recording features. Voice recording module 28 can store recorded information in memory provided by controller 26, or recorded data can be sent by data communication module 34 to a remote system (not shown).
By transmitting voice data in real-time to a remote system, integrated device 10 provides the ability to store essentially unlimited amounts of dictation. This allows the caregiver, such as a doctor or a nurse, to dictate reports on procedures, patient status, etc., during the course of his or her activities, alleviating the need to allocate post-activity time to dictating reports. This results in both time and cost efficiencies that benefit medical service providers as well as patients. It also tends to improve the quality of reports due to the ease of making them at the appropriate time while memory is still fresh.
Voice recording module 28 is further enhanced by data communication module 34 which allows patient information to be obtained from a remote hospital data system. Controller 26 and voice recording module 28 can be configured to use speech recognition to identify a patient's name or accept entry of some other indicia such as a patient identification number, and transmit this information to the remote data system using data communication module 34. The remote hospital data system then provides specific patient history to controller 26. User input/output module 36 includes a display, such as a backlit liquid crystal display, that provides this information to the medical caregiver. By interfacing with the hospital data system, device 10 can further be configured to prompt the caregiver to provide specific information, such as Joint Commission Required Vitals to ensure compliance with required procedures.
A video communication module 35 further enhances utility of integrated device 10 by providing for communication of video data. Some surgical procedures use miniaturized video cameras (not shown), such as in an endoscope, the signals from which can be transmitted over either a video cable or via wireless communication. Video communication module 35 provides for receiving video signals from a video medical device (or any other video source) and then transmitting the video data to another system, such as a hospital data system, which can retransmit the video data as desired. Video communication module 35 provides for coupling integrated device 10 to a display system such as a computer system with video hardware to view video of a medical procedure, video of a person with whom a caregiver is communicating using device 10, or video from any source.
Cellular paging and telephony module 30 further provides a standard cell telephone capability for integrated device 10. As with cell telephones, a speed dial capability can be provided to facilitate one button dialing of important numbers. As discussed above, a paging signal can encode a telephone number that integrated device 10 will display and dial when the caregiver presses button 16 as shown in FIG. 1.
In order to facilitate use of integrated device 10 in a medical environment, a flexible sterile sheath, such as thin latex rubber, is provided to allow its transportation into a sterile field of an operating room. In its wrist band configuration, housing 10 is sufficiently smooth and has a thin enough profile to fit beneath a surgical glove. In either case, use of thin rubber to provide a sterile sheath can still allow the caregiver to view the backlit liquid crystal display.
An alternative embodiment integrated communication and data entry device 110, shown in
A head-mounted, voice-operated controller 210 for medical equipment is shown in
The voice commands can be interlocked as shown in FIG. 7. The caregiver issues a voice command to move a surgical table 212 vertically up with a “table up” oral command 214. The receiver (not shown) interprets command 214 and sends a “table up?” request to acknowledge 216 that controller 210 transforms into an oral confirmation request to the caregiver, who then confirms the command with a “yes” acknowledgment 218. When table 212 has reached a sufficient height the caregiver issues a “stop” command 220, which the receiver promptly acts upon without requesting confirmation to stop vertical movement of table 212.
Although the invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of the present invention as described and defined in the following claims.
This application is a divisional of U.S. patent application Ser. No. 09/187,696, filed Nov. 6, 1998, now is abandoned, which claims the benefit of U.S. application Ser. No. 60/064,709, filed Nov. 7, 1997, the disclosures of which are expressly incorporated by reference herein.
Number | Name | Date | Kind |
---|---|---|---|
2976419 | Menke et al. | Mar 1961 | A |
3439320 | Ward | Apr 1969 | A |
3478344 | Schwitzgebel et al. | Nov 1969 | A |
3696384 | Lester | Oct 1972 | A |
3714573 | Grossman | Jan 1973 | A |
3739329 | Lester | Jun 1973 | A |
3805227 | Lester | Apr 1974 | A |
3805265 | Lester | Apr 1974 | A |
3988724 | Anderson | Oct 1976 | A |
4151407 | McBride et al. | Apr 1979 | A |
4216462 | McGrath et al. | Aug 1980 | A |
4225953 | Simon et al. | Sep 1980 | A |
4237344 | Moore | Dec 1980 | A |
4275385 | White | Jun 1981 | A |
4577060 | Webb et al. | Mar 1986 | A |
4598275 | Ross et al. | Jul 1986 | A |
4601064 | Shipley | Jul 1986 | A |
4610254 | Morgan et al. | Sep 1986 | A |
4649385 | Aires et al. | Mar 1987 | A |
4706689 | Man | Nov 1987 | A |
4717261 | Kita et al. | Jan 1988 | A |
4728928 | Shipley | Mar 1988 | A |
4740792 | Sagey et al. | Apr 1988 | A |
4814751 | Hawkins et al. | Mar 1989 | A |
4837568 | Snaper | Jun 1989 | A |
4843640 | Juengel | Jun 1989 | A |
4857716 | Gombrich et al. | Aug 1989 | A |
4885571 | Pauley et al. | Dec 1989 | A |
4940963 | Gutman et al. | Jul 1990 | A |
4955000 | Nastrom | Sep 1990 | A |
4967195 | Shipley | Oct 1990 | A |
4968966 | Jasinski et al. | Nov 1990 | A |
4979217 | Shipley | Dec 1990 | A |
4981141 | Segalowitz | Jan 1991 | A |
4990892 | Guest et al. | Feb 1991 | A |
5012113 | Valentine et al. | Apr 1991 | A |
5014040 | Weaver et al. | May 1991 | A |
5027314 | Linwood et al. | Jun 1991 | A |
5036852 | Leishman | Aug 1991 | A |
5038800 | Oba | Aug 1991 | A |
5051741 | Wesby | Sep 1991 | A |
5051924 | Bergeron et al. | Sep 1991 | A |
5062151 | Shipley | Oct 1991 | A |
5119104 | Heller | Jun 1992 | A |
5153584 | Engira | Oct 1992 | A |
5214421 | Vernon et al. | May 1993 | A |
5218344 | Ricketts | Jun 1993 | A |
5226090 | Kimura | Jul 1993 | A |
5227776 | Starefoss | Jul 1993 | A |
5231991 | Nelson | Aug 1993 | A |
5245314 | Kah, Jr. | Sep 1993 | A |
5266944 | Carroll et al. | Nov 1993 | A |
5291399 | Chaco | Mar 1994 | A |
5317309 | Vercellotti et al. | May 1994 | A |
5319191 | Crimmins | Jun 1994 | A |
5319355 | Russek | Jun 1994 | A |
5319363 | Welch et al. | Jun 1994 | A |
5341412 | Ramot et al. | Aug 1994 | A |
5348008 | Bornn et al. | Sep 1994 | A |
5351149 | Crimmins | Sep 1994 | A |
5363425 | Mufti et al. | Nov 1994 | A |
5374921 | Martin et al. | Dec 1994 | A |
5387993 | Heller et al. | Feb 1995 | A |
5390238 | Kirk et al. | Feb 1995 | A |
5396224 | Dukes et al. | Mar 1995 | A |
5402469 | Hopper et al. | Mar 1995 | A |
5412715 | Volpe | May 1995 | A |
5417222 | Dempsey et al. | May 1995 | A |
5421177 | Sieber et al. | Jun 1995 | A |
5426425 | Conrad et al. | Jun 1995 | A |
5455851 | Chaco et al. | Oct 1995 | A |
5458123 | Unger | Oct 1995 | A |
5461665 | Shur et al. | Oct 1995 | A |
5465082 | Chaco | Nov 1995 | A |
5471404 | Mazer | Nov 1995 | A |
5473667 | Neustein | Dec 1995 | A |
5493283 | Hopper et al. | Feb 1996 | A |
5504477 | Whitright et al. | Apr 1996 | A |
5515426 | Yacenda et al. | May 1996 | A |
5525967 | Azizi et al. | Jun 1996 | A |
5534851 | Russek | Jul 1996 | A |
5534876 | Erickson et al. | Jul 1996 | A |
5537459 | Price et al. | Jul 1996 | A |
5541585 | Duhame et al. | Jul 1996 | A |
5548637 | Heller et al. | Aug 1996 | A |
5561412 | Novak et al. | Oct 1996 | A |
5572195 | Heller et al. | Nov 1996 | A |
5572653 | DeTemple et al. | Nov 1996 | A |
5576952 | Stutman et al. | Nov 1996 | A |
5588009 | Will | Dec 1996 | A |
5589821 | Sallen et al. | Dec 1996 | A |
5590648 | Mitchell et al. | Jan 1997 | A |
5594786 | Chaco et al. | Jan 1997 | A |
5600108 | Newham | Feb 1997 | A |
5621384 | Crimmins et al. | Apr 1997 | A |
5627524 | Fredrickson et al. | May 1997 | A |
5629678 | Gargano et al. | May 1997 | A |
5633742 | Shipley | May 1997 | A |
5635907 | Bernard et al. | Jun 1997 | A |
5640002 | Ruppert et al. | Jun 1997 | A |
5640157 | Langeraar | Jun 1997 | A |
5652570 | Lepkofker | Jul 1997 | A |
5682139 | Pradeep et al. | Oct 1997 | A |
5682142 | Loosmore et al. | Oct 1997 | A |
5683423 | Post | Nov 1997 | A |
5686888 | Welles, II et al. | Nov 1997 | A |
5689229 | Chaco et al. | Nov 1997 | A |
5697060 | Akahane | Dec 1997 | A |
5699038 | Ulrich et al. | Dec 1997 | A |
5714932 | Castellon et al. | Feb 1998 | A |
5722599 | Fries | Mar 1998 | A |
5729196 | Aljadeff et al. | Mar 1998 | A |
5731757 | Layson, Jr. | Mar 1998 | A |
5732711 | Fitzpatrick et al. | Mar 1998 | A |
5737688 | Sakai et al. | Apr 1998 | A |
5742233 | Hoffman et al. | Apr 1998 | A |
5745037 | Guthrie et al. | Apr 1998 | A |
5745272 | Shipley | Apr 1998 | A |
5748084 | Isikoff | May 1998 | A |
5748148 | Heiser et al. | May 1998 | A |
5749908 | Snell | May 1998 | A |
5751246 | Hertel | May 1998 | A |
5754125 | Pearce | May 1998 | A |
5760687 | Cousy | Jun 1998 | A |
5767788 | Ness | Jun 1998 | A |
5771003 | Seymour | Jun 1998 | A |
5793861 | Haigh | Aug 1998 | A |
5815566 | Ramot et al. | Sep 1998 | A |
5818617 | Shipley | Oct 1998 | A |
5822230 | Kikinis et al. | Oct 1998 | A |
5822418 | Yacenda et al. | Oct 1998 | A |
5822544 | Chaco et al. | Oct 1998 | A |
5825283 | Camhi | Oct 1998 | A |
5828306 | Curran | Oct 1998 | A |
5831533 | Kanno | Nov 1998 | A |
5835907 | Newman | Nov 1998 | A |
5838223 | Gallant et al. | Nov 1998 | A |
5838472 | Welch et al. | Nov 1998 | A |
H1782 | Wicks et al. | Feb 1999 | H |
5867821 | Ballantyne et al. | Feb 1999 | A |
5872505 | Wicks et al. | Feb 1999 | A |
5877675 | Rebstock et al. | Mar 1999 | A |
5902234 | Webb | May 1999 | A |
5920287 | Belcher et al. | Jul 1999 | A |
5921938 | Aoyama et al. | Jul 1999 | A |
5959529 | Kail, IV | Sep 1999 | A |
5970387 | Yuan | Oct 1999 | A |
5970457 | Brant et al. | Oct 1999 | A |
5973613 | Reis et al. | Oct 1999 | A |
6009333 | Chaco | Dec 1999 | A |
6021310 | Thorne | Feb 2000 | A |
6037879 | Tuttle | Mar 2000 | A |
6040773 | Vega et al. | Mar 2000 | A |
6057758 | Dempsey et al. | May 2000 | A |
6057782 | Koenig | May 2000 | A |
6082776 | Feinberg | Jul 2000 | A |
6085069 | Sharpe | Jul 2000 | A |
6091332 | Eberhardt et al. | Jul 2000 | A |
6097301 | Tuttle | Aug 2000 | A |
6100804 | Brady et al. | Aug 2000 | A |
6101390 | Jayaraman et al. | Aug 2000 | A |
6104311 | Lastinger | Aug 2000 | A |
6114962 | Wiklof et al. | Sep 2000 | A |
6118379 | Kodukula et al. | Sep 2000 | A |
6121878 | Brady et al. | Sep 2000 | A |
6127928 | Issacman et al. | Oct 2000 | A |
6130612 | Castellano et al. | Oct 2000 | A |
6131067 | Girerd et al. | Oct 2000 | A |
6133832 | Winder et al. | Oct 2000 | A |
6137411 | Tyren | Oct 2000 | A |
6137412 | Herzer | Oct 2000 | A |
6141531 | Willaims et al. | Oct 2000 | A |
6144301 | Frieden | Nov 2000 | A |
6147592 | Ulrich et al. | Nov 2000 | A |
6150921 | Werb et al. | Nov 2000 | A |
6154139 | Heller | Nov 2000 | A |
6177861 | MacLellan et al. | Jan 2001 | B1 |
6204764 | Maloney | Mar 2001 | B1 |
6204765 | Brady et al. | Mar 2001 | B1 |
6204813 | Wadell et al. | Mar 2001 | B1 |
6211781 | McDonald | Apr 2001 | B1 |
6216104 | Moshfeghi et al. | Apr 2001 | B1 |
6252512 | Riley | Jun 2001 | B1 |
6259355 | Chaco et al. | Jul 2001 | B1 |
6344794 | Ulrich et al. | Feb 2002 | B1 |
6353413 | White et al. | Mar 2002 | B1 |
6408272 | White et al. | Jun 2002 | B1 |
6453281 | Walters et al. | Sep 2002 | B1 |
6466801 | Leyendecker | Oct 2002 | B1 |
Number | Date | Country |
---|---|---|
37 35295 | Apr 1988 | DE |
2 193 359 | Feb 1988 | GB |
2 230 365 | Oct 1990 | GB |
2 265 038 | Sep 1993 | GB |
WO 9209178 | May 1992 | WO |
WO 9422098 | Sep 1994 | WO |
WO 9515064 | Jun 1995 | WO |
WO 9535634 | Dec 1995 | WO |
WO 9625738 | Aug 1996 | WO |
WO 9715240 | May 1997 | WO |
WO 9740640 | Oct 1997 | WO |
Number | Date | Country | |
---|---|---|---|
20020057203 A1 | May 2002 | US |
Number | Date | Country | |
---|---|---|---|
60064709 | Nov 1997 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 09187696 | Nov 1998 | US |
Child | 10039342 | US |