Patent Publication Number: US-2023157912-A1

Title: Patient Support Apparatus For Sensing And Responding To An Emergency Event

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The subject patent application claims priority to and all the benefits of U.S. Provisional Patent Application No. 63/030,585, filed on May 27, 2020, the entire contents and disclosure of which is hereby incorporated by reference in its entirety. 
    
    
     BACKGROUND 
     Often, a patient support apparatus (such as a hospital bed or stretcher) has a patient support deck with a raiseable back section. An emergency CPR release lever can be provided that, when pulled, causes the back section to automatically lower to a suitable position for performing cardiopulmonary resuscitation (CPR) on a patient. Sometimes, even with the back section lowered, the patient support apparatus remains in a configuration that makes performing CPR more challenging. As a result, a caregiver may wish to further move the patient support deck before performing CPR. However, motion locks may be active that prevent movement of the patient support deck. 
     SUMMARY 
     The present disclosure provides a patient support apparatus for sensing and responding to an emergency event. The patient support apparatus includes a support structure having a support frame and a patient support deck with a deck section capable of articulation relative to the support frame. A plurality of actuators are coupled to the support structure, including a lift actuator to lift and lower the patient support deck relative to a floor surface and a deck actuator to articulate the deck section relative to the support frame. A user interface is provided to cause operation of the plurality of actuators. An activator is coupled to the support structure and is arranged to be actuated by a user to signal the emergency event. A controller is coupled to the activator, the user interface, and the plurality of actuators. The controller includes a motion lock module having a plurality of configurable electronic motion locks including a first motion lock associated with the lift actuator and a second motion lock associated with the deck actuator. The first motion lock has a lift locked state in which the user interface is inoperable to actuate the lift actuator, and a lift unlocked state in which the user interface is operable to actuate the lift actuator. The second motion lock has a deck locked state in which the user interface is inoperable to actuate the deck actuator, and a deck unlocked state in which the user interface is operable to actuate the deck actuator. The controller is configured to automatically reset the first motion lock and the second motion lock to their unlocked states in response to detecting the emergency event. 
     The present disclosure also provides a method for sensing and responding to an emergency event on a patient support apparatus, the patient support apparatus including a support structure having a support frame and a patient support deck with a deck section capable of articulation relative to the support frame, a lift actuator to lift and lower the patient support deck relative to a floor surface, a deck actuator to articulate the deck section relative to the support frame, a user interface, and an activator coupled to the support structure to be actuated by a user to signal the emergency event, the method including: storing settings for a plurality of configurable electronic motion locks including a first motion lock associated with the lift actuator and a second motion lock associated with the deck actuator, wherein the first motion lock has a lift locked state in which the user interface is inoperable to actuate the lift actuator and a lift unlocked state in which the user interface is operable to actuate the lift actuator and the second motion lock has a deck locked state in which the user interface is inoperable to actuate the deck actuator and a deck unlocked state in which the user interface is operable to actuate the deck actuator; detecting the emergency event; and automatically resetting the first and second motion locks to their unlocked states in response to detecting the emergency event. 
     The present disclosure also provides a system for sensing and responding to an emergency event, the system including an activator to signal the emergency event and a patient support apparatus. The patient support apparatus includes a support structure having a support frame and a patient support deck with a deck section capable of articulation relative to the support frame. A plurality of actuators are coupled to the support structure, including a lift actuator to lift and lower the patient support deck relative to a floor surface and a deck actuator to articulate the deck section relative to the support frame. A user interface is provided to cause operation of the plurality of actuators. A controller is coupled to the activator, the user interface, and the plurality of actuators. The controller is configured to detect the emergency event and includes a motion lock module having a plurality of configurable electronic motion locks including a first motion lock associated with the lift actuator and a second motion lock associated with the deck actuator. The first motion lock has a lift locked state in which the user interface is inoperable to actuate the lift actuator, and a lift unlocked state in which the user interface is operable to actuate the lift actuator. The second motion lock has a deck locked state in which the user interface is inoperable to actuate the deck actuator, and a deck unlocked state in which the user interface is operable to actuate the deck actuator. The controller is configured to automatically reset the first motion lock and the second motion lock to their unlocked states in response to detecting the emergency event. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of a patient support apparatus including an activator for signaling an emergency event. 
         FIG.  2    is a side elevational and schematic view of the patient support apparatus. 
         FIG.  3    is a block diagram of a control system for the patient support apparatus. 
         FIG.  4 A  illustrates a user actuating the activator to signal the emergency event. 
         FIG.  4 B  illustrates that the back section has been moved to its lowered position in response to the user actuating the activator in  FIG.  4 A  and further illustrates the user accessing a user interface to lower a patient support deck. 
         FIG.  4 C  illustrates that the patient support deck has been lowered to a low height position and further illustrates the user is ready to provide emergency care. 
         FIG.  5    is a flow chart showing an example of steps taken to sense and respond to the emergency event. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIG.  1   , a patient support apparatus  30  is shown for supporting a patient in a health care setting. The patient support apparatus  30  illustrated in  FIG.  1    is a hospital bed. In some versions, however, the patient support apparatus  30  may be a stretcher, cot, table, wheelchair, or similar apparatus utilized in the care of a patient. 
     A support structure  32  provides support for the patient. The support structure  32  illustrated in  FIG.  1    includes a base  34  and a support frame  36 . The support frame  36  is shown above the base  34 . The support structure  32  also includes a patient support deck  38  disposed on the support frame  36 . The patient support deck  38  includes several deck sections, some of which articulate (e.g., pivot) relative to the support frame  36 , such as a back section  41  (also referred to as a fowler section), a seat section  43 , a thigh section  45 , and a foot section  47 . More or fewer deck sections may be present in some versions. The patient support deck  38  provides a patient support surface  42  upon which the patient is supported. Collectively, the support frame  36  and the patient support deck  38  form a litter of the patient support apparatus  30 . 
     A mattress  40  is disposed on the patient support deck  38 . The mattress  40  includes a secondary patient support surface upon which the patient is supported. The base  34 , support frame  36 , patient support deck  38 , and patient support surfaces  42  each have a head end and a foot end corresponding to designated placement of the patient&#39;s head and feet on the patient support apparatus  30 . The construction of the support structure  32  may take on any known or conventional design, and is not limited to that specifically set forth above. In addition, the mattress  40  may be omitted in certain versions, such that the patient rests directly on the patient support surface  42 . 
     A headboard  44  and a footboard  46  are coupled to the support frame  36 . In some versions, when the headboard  44  and footboard  46  are included, the headboard  44  and footboard  46  may be coupled to other locations on the patient support apparatus  30 , such as the base  34 . In still further versions, the patient support apparatus  30  does not include the headboard  44  and/or the footboard  46 . 
     Caregiver interfaces  48 , such as handles, are shown integrated into the footboard  46  to facilitate movement of the patient support apparatus  30  over floor surfaces. Additional caregiver interfaces  48  may be integrated into the headboard  44  and/or other components of the patient support apparatus  30 . The caregiver interfaces  48  are graspable by the caregiver to manipulate the patient support apparatus  30  for movement. 
     Wheels  50  are coupled to the base  34  to facilitate transport over the floor surfaces. The wheels  50  are arranged in each of four quadrants of the base  34  adjacent to corners of the base  34 . In the version shown, the wheels  50  are caster wheels able to rotate and swivel relative to the support structure  32  during transport. Each of the wheels  50  forms part of a caster assembly  52 . Each caster assembly  52  is mounted to the base  34 . It should be understood that various configurations of the caster assemblies  52  are contemplated. In addition, in some versions, the wheels  50  are not caster wheels and may be non-steerable, steerable, non-powered, powered, or combinations thereof. Additional wheels are also contemplated. For example, the patient support apparatus  30  may include four non-powered, non-steerable wheels, along with one or more powered wheels. In some cases, the patient support apparatus  30  may not include any wheels. 
     Side rails  54 ,  56 ,  58 ,  60  are coupled to the support structure  32 , such as by being coupled directly to the support frame  36  and/or the patient support deck  38 . The side rails  54 ,  56 ,  58 ,  60  are thus indirectly supported by the base  34 . A first side rail  54  is positioned at a right head end of the patient support apparatus  30 . The first side rail  54  is coupled to the back section  41  of the patient support deck  38 . A second side rail  56  is positioned at a right foot end of patient support apparatus  30 . The second side rail  56  is coupled to the support frame  36 . A third side rail  58  is positioned at a left head end of the patient support apparatus  30 . The third side rail  58  is coupled to the back section  41  of the patient support deck  38 . A fourth side rail  60  is positioned at a left foot end of the patient support apparatus  30 . The fourth side rail  60  is coupled to the support frame  36 . 
     It should be appreciated that the side rails  54 ,  56 ,  58 ,  60  may be mounted to other parts of the patient support apparatus  30 . In some cases, all of the side rails  54 ,  56 ,  58 ,  60  are mounted to the support frame  36 . In other cases, all of the side rails  54 ,  56 ,  58 ,  60  are mounted to the patient support deck  38 . If the patient support apparatus  30  is a stretcher or a cot, there may be fewer side rails. 
     Referring to  FIG.  2   , the side rails  54 ,  56  are shown schematically and in phantom to better illustrate the deck sections  41 ,  43 ,  45 ,  47 . The deck sections  41 ,  43 ,  45 ,  47  are shown in a configuration in which the back section  41  is raised above the support frame  36  and the seat section  43  is fixed to the support frame  36  (such as by welding, fasteners, or the like). The thigh section  45  and the foot section  47  are capable of articulating relative to the support frame  36 . 
     In the version shown, the deck sections  41 ,  43 ,  45 ,  47  are pivotally coupled together in series at pivot joints defined about pivot axes P. Each of the deck sections  41 ,  43 ,  45 ,  47  has a first end and a second end. The first end is closer to the head end of the patient support apparatus  30  when the patient support deck  38  is in a flat configuration and the second end is closer to the foot end of the patient support apparatus  30 . In the version shown, the second end of the back section  41  is pivotally coupled to the first end of the seat section  43  about one of the pivot axes P. The first end of the thigh section  45  is pivotally coupled to the second end of the seat section  43  about another of the pivot axes P. The first end of the foot section  47  is pivotally coupled to the second end of the thigh section  45  about another of the pivot axes P (see also  FIG.  4 C ). 
     The deck sections  41 ,  43 ,  45 ,  47  may be pivotally coupled together by pivot pins, shafts, and the like at the pivot joints. Pivot brackets may be employed to form the pivot joints. Additionally, other types of connections are possible between the deck sections  41 ,  43 ,  45 ,  47  so that the deck sections  41 ,  43 ,  45 ,  47  are capable of moving, e.g., articulating, relative to one another. For instance, in some cases, translational joints may be provided between adjacent deck sections, or other compound movement connections may be provided between adjacent deck sections, such as joints that allow both pivotal and translational motion between adjacent deck sections. Further, in some cases, the back section  41  and the thigh section  45  may be pivotally (or otherwise) connected directly to the support frame  36  or other part of the support structure  32 , instead of the seat section  43 . See, for example, the back section shown in U.S. Patent Application Pub. No. 2020/0107983, entitled “Patient Support Apparatus With Articulating Fowler Deck Section Traveling Through Arcuate Path,” filed on Oct. 8, 2019, hereby incorporated herein by reference. 
     The deck sections  41 ,  43 ,  45 ,  47  may comprise frames and deck panels removably coupled to the frames. The deck sections  41 ,  43 ,  45 ,  47  may comprise only frames or only deck panels, or may have any suitable configuration. The deck panels may be plastic panels that snap fit or are otherwise capable of being easily removed from their frames for cleaning, etc. The deck panels could also be formed of other materials and may be permanently affixed to the frames. Each of the deck sections may comprise structural members (e.g., metal bars and tubes) welded together to form a support framework over which deck panels are attached. The deck sections could also be formed of other materials and comprise only single members, such as a single panel, frame, or other type of support structure. 
     Deck actuators  80 ,  82  operate to move the back section  41 , thigh section  45 , and foot section  47  relative to each other and the support frame  36 . The deck actuators  80 ,  82  may be linear actuators, rotary actuators, or other type of actuators capable of moving the back section  41 , thigh section  45 , and foot section  47 . The deck actuators  80 ,  82  may be electrically powered, hydraulic, electro-hydraulic, and/or pneumatic, or the like. The deck actuators  80 ,  82  may include motors, gear trains, drive screws, nuts/lead screws, and the like, for actuation. In the version shown, the deck actuators  80 ,  82  are electrically powered linear actuators including actuator housings  80   a ,  82   a  and drive rods  80   b ,  82   b  that extend and retract with respect to their associated actuator housing  80   a ,  82   a  (compare  FIGS.  2  and  4 B  and movement of drive rod  80   b ). Hereinafter, the deck actuators  80 ,  82  shall be referred to as a back section actuator  80  and a thigh section actuator  82 . 
     The back section actuator  80  is operatively connected to the back section  41  to pivot, or otherwise articulate, the back section  41  relative to the support frame  36  between a lowered position and one or more raised positions. More specifically, the back section actuator  80  pivots the back section  41  about its pivot axis P relative to the seat section  43 . In the version shown, the back section actuator  80  is pivotally connected at a first actuator end to a mounting bracket  84  fixed to the support frame  36  (e.g., welded, fastened, integral therewith, etc.). The back section actuator  80  is pivotally connected at a second actuator end to a mounting bracket fixed to the back section  41  (e.g., welded, fastened, integral therewith, etc.). The back section actuator  80  could be pivotally connected to these brackets via pivot pins, shafts, and the like. In other versions, the back section actuator  80  may be connected through other types of connections or linkages in order to move the back section  41  to the lowered position or the one or more raised positions. See, for example, the back section actuator shown in U.S. Patent Application Pub. No. 2020/0107983, entitled “Patient Support Apparatus With Articulating Fowler Deck Section Traveling Through Arcuate Path,” filed on Oct. 8, 2019, incorporated herein by reference. 
     The thigh section actuator  82  is operatively connected to the thigh section  45  to pivot, or otherwise articulate, the thigh section  45  relative to the support frame  36  between a lowered position and one or more raised positions. More specifically, the thigh section actuator  82  pivots the thigh section  45  about its pivot axis P relative to the seat section  43 . Owing to the pivotal coupling of the second end of the thigh section  45  to the first end of the foot section  47 , when the thigh section  45  is moved, the first end of the foot section  47  is also moved. The second end of the foot section  47  may be a free end that slides along the support frame  36  when the thigh section  45  is being moved. The second end of the foot section  47  may be connected in other ways to the support frame  36 . In the version shown, the thigh section actuator  82  is pivotally connected at a first actuator end to a mounting bracket  84  fixed to the support frame  36  (e.g., welded, fastened, integral therewith, etc.). The thigh section actuator  82  is pivotally connected at a second actuator end to a mounting bracket  84  fixed to the thigh section  45  (e.g., welded, fastened, integral therewith, etc.). The thigh section actuator  82  could be pivotally connected to these brackets via pivot pins, shafts, and the like. In other versions, the thigh section actuator  82  may be connected through other types of connections or linkages in order to move the thigh section  45  to the lowered position or the one or more raised positions. The deck actuators  80 ,  82  are operable to move the patient support deck  38  to different configurations. 
     An angle sensor S 1  may be operatively coupled to the back section  41  to measure a current angle σ of the back section  41  relative to a longitudinal axis L. The longitudinal axis L may be an axis that remains parallel to the floor surface or a horizontal axis defined perpendicular to a gravity vector. The longitudinal axis L may also be defined by the support frame  36  and may move with the support frame  36 . In this case, when the support frame  36  tilts from horizontal, such as when moving to a Trendelenburg position, the current angle σ may be corrected by a separate sensor on the patient support apparatus  30  that measures a Trendelenburg tilt angle to determine the angle of the back section  41  relative to horizontal. The angle sensor S 1  may also measure an angle θ of the back section  41  relative to gravity to determine the current angle σ relative to horizontal. The angle sensor S 1  may include one or more accelerometers, tilt sensors, gyroscopes, potentiometers, hall-effect sensors, or the like. The angle sensor S 1  may also be placed at the pivot axis P for the back section  41  to measure the current angle σ. Any suitable angle sensor and/or location may be employed to measure the current angle σ of the back section  41 . 
     The patient support apparatus  30  includes a lift system  90  that operates to lift and lower the support frame  36  and the patient support deck  38  relative to the base  34 . The lift system  90  is configured to move the support frame  36  from a high height position (shown in  FIG.  2   ) to a low height position (see  FIG.  4 C ), or to any desired position in between. The lift system  90  includes a head end lift  92  and a foot end lift  94 . The head end lift  92  is arranged to lift or lower the head end of the support frame  36  relative to the base  34 . The foot end lift  94  is arranged to lift or lower the foot end of the support frame  36  relative to the base  34 . Each of the head end lift  92  and the foot end lift  94  includes a lift actuator  96 ,  98  to actuate the lifts  92 ,  94 . 
     In the version shown, the lifts  92 ,  94  are column lifts that extend and retract vertically in a telescoping manner. The column lifts may be hydraulic jacks capable of extending and retracting. The column lifts may be like those described in U.S. Pat. No. 6,820,294, entitled “Linkage For Lift/Lowering Control For A Patient Supporting Platform,” filed on Feb. 26, 2002, hereby incorporated herein by reference, or like those described in U.S. Pat. No. 7,395,564, entitled “Articulated Support Surface For A Stretcher Or Gurney,” filed on Mar. 24, 2006, hereby incorporated herein by reference. The lifts  92 ,  94  may be identical in form or may have different forms. For instance, one of the lifts may be a crank-type mechanism or scissor-type mechanism, while the other of the lifts may be a column lift. 
     Another lift system that can be used on the patient support apparatus  30  is shown in U.S. Provisional Patent Application No. 62/948,540, filed on Dec. 16, 2019, entitled “Patient Support With Lift Assembly,” which is hereby incorporated herein by reference. 
     The lift actuators  96 ,  98  include linear actuators, rotary actuators, or other types of actuators. The lift actuators  96 ,  98  may be electrically operated, hydraulic, electro-hydraulic, and/or pneumatic, or the like. The lift actuators  96 ,  98  may include motors, gear trains, drive screws, nuts/lead screws, and the like, for actuation. In the version shown, the lift actuators  96 ,  98  are electrically powered linear actuators. 
     Referring to  FIG.  3   , a control system is shown to control operation of the actuators  80 ,  82 ,  96 ,  98 . The control system includes a controller  100  having one or more processors for processing instructions or for processing algorithms stored in memory of the controller  100  to control operation of the actuators  80 ,  82 ,  96 ,  98 , to coordinate movement of the actuators  80 ,  82 ,  96 ,  98 , or to independently operate the actuators  80 ,  82 ,  96 ,  98  to place the patient support deck  38  in various configurations. Additionally or alternatively, the controller  100  may include one or more microcontrollers, microprocessors, field programmable gate arrays, systems on a chip, discrete circuitry, and/or other suitable hardware, software, or firmware that is capable of carrying out the functions described herein. The controller  100  may be carried on-board the patient support apparatus  30  or may be remotely located. In some versions, the controller  100  is mounted to the base  34 . In some versions, the controller  100  is mounted to the footboard  46 . Power to the actuators  80 ,  82 ,  96 ,  98  and/or the controller  100  may be provided by a battery power source and/or an external power source. 
     The controller  100  is coupled to the actuators  80 ,  82 ,  96 ,  98  in a manner that allows the controller  100  to control the actuators  80 ,  82 ,  96 ,  98 . The controller  100  may communicate with the actuators  80 ,  82 ,  96 ,  98  via wired or wireless connections to perform one of more desired functions. The controller  100  may monitor a current state of the actuators  80 ,  82 ,  96 ,  98  via one or more sensors and determine desired states in which the actuators  80 ,  82 ,  96 ,  98  should be placed, based on one or more input signals that the controller  100  receives from one or more user input devices. The state of the actuators  80 ,  82 ,  96 ,  98  may be a position, a relative position, an angle, an energization status (e.g., on/off), or any other parameter of the actuators  80 ,  82 ,  96 ,  98 . 
     One or more user interfaces may be provided to allow a user, such as a caregiver, to control movement of the patient support deck  38  to various configurations. A first user interface U 1  is shown mounted to one of the side rails  54 ,  56 ,  58 ,  60 . The first user interface U 1  may also be a pendant-type user interface or embodied in a portable electronic device (e.g., iWatch®, iPhone®, iPad®, or similar electronic devices). A similar user interface U 1  could be mounted to all of the side rails  54 ,  56 ,  58 ,  60 , only to side rails  54 ,  58 , or to any one or more of the side rails  54 ,  56 ,  58 ,  60 . 
     The first user interface U 1  is coupled to the controller  100 . The first user interface U 1  has one or more user input devices  102  (also referred to as controls), which transmit corresponding input signals to the controller  100 , and the controller  100  controls operation of the actuators  80 ,  82 ,  96 ,  98  based on the input signals. The user input devices  102  may include any device capable of being actuated by the user and may be provided on a control panel, touchscreen, or the like. The user input devices  102  may be configured to be actuated in a variety of different ways, including but not limited to, mechanical actuation (hand, foot, finger, etc.), hands-free actuation (voice, foot, etc.), and the like. The user input devices  102  may include buttons, a gesture sensing device for monitoring motion of hands, feet, or other body parts of the user (such as through a camera), a microphone for receiving voice activation commands, a foot pedal, and sensors (e.g., infrared sensor such as a light bar or light beam to sense a user&#39;s body part, ultrasonic sensors, capacitive sensors, etc.). Additionally, the buttons/pedals can be physical buttons/pedals, such as pushbuttons, or virtually implemented buttons/pedals such as through optical projection or on a touchscreen. The buttons/pedals may also be mechanically connected or drive-by-wire type buttons/pedals where a user applied force actuates a sensor, such as a switch or potentiometer. It should be appreciated that any combination of user input devices may also be utilized. In the version shown in  FIG.  3   , the user input devices  102  on the first user interface U 1  include buttons, such as buttons  102   a ,  102   b  corresponding to lifting/lowering the patient support deck  38 , buttons  102   c ,  102   d  corresponding to raising/lowering the back section  41 , and buttons  102   e ,  102   f  corresponding to raising/lowering the thigh section  45 . 
     During operation, when a user wishes to move the patient support deck  38  into a different configuration, the user actuates one or more of the user input devices  102 . For instance, in the event the user wishes to lower the patient support deck  38  relative to the base  34 , the user actuates the appropriate user input device  102  (see button  102   b , for example). In response to actuation, the controller  100  sends output signals to the lift actuators  96 ,  98  to cause simultaneous operation of the actuators  96 ,  98  in a manner that causes the patient support deck  38  to lower relative to the floor surface. As another example, in the event the user wishes to move the back section  41  to its lowered position relative to the support frame  36 , the user actuates the appropriate user input device  102  (see button  102   d , for example). In response to actuation, the controller  100  sends an output signal to the back section actuator  80  to cause operation of the back section actuator  80  in a manner that causes the back section  41  to move toward its lowered position. 
     A second user interface U 2  is shown mounted to the footboard  46 . The second user interface U 2  could also be mounted to the headboard  44  or may be a pendant-type user interface or embodied in a portable electronic device (e.g., iWatch®, iPhone®, iPad®, or similar electronic devices). The second user interface U 2  is coupled to the controller  100 . The second user interface U 2 , like the first user interface U 1 , has one or more user input devices  102 , which transmit corresponding input signals to the controller  100 . The second user interface U 2  includes the functionality of the first user interface U 1  but also has additional functionality as described further below. In the version shown in  FIG.  3   , the user input devices  102  on the second user interface U 2  include buttons disposed about a display  104  that activate sensors (e.g., switches) coupled to the controller  100 , as well as a capacitive touchscreen integrated with the display  104 . The touchscreen provides buttons (virtual) for actuation by the user in one or more user menus. The display  104  may be an LCD, LED, OLED, or similar type of electronic display. 
     One of the buttons disposed about the display  104  of the second user interface U 2 , is a lock button  102   g  represented by a lock symbol. When actuated, a sensor (e.g., a switch) associated with the lock button  102   g  transmits an input signal to the controller  100  that causes the controller  100  to access a motion lock module  106  and output lock menu screen SCR on the display  104 . The motion lock module  106  forms part of a software program operable by the controller  100  and includes executable code to be executed by one or more processors of the controller  100 . The motion lock module  106  allows the user to limit (or lock out) operation of certain features of the patient support apparatus  30 , to prevent the patient or others from operating such features. 
     Buttons  102   h ,  102   i ,  102   j ,  102   k  (e.g., virtual touchscreen buttons) provided on the lock menu screen SCR are associated with a plurality of configurable, electronic motion locks  108 ,  110 ,  112 ,  114  that are configurable by the user between locked and unlocked states. The motion locks  108 ,  110 ,  112 ,  114  are associated with the deck actuators  80 ,  82  and the lift actuators  96 ,  98  to control operation of these actuators  80 ,  82 ,  96 ,  98 , e.g., to selectively lock or unlock motion caused by these actuators  80 ,  82 ,  96 ,  98 . In the version shown, there are four motion locks  108 ,  110 ,  112 ,  114  that can be configured by the user, including a head motion lock  108 , a 30-degree fowler lock  110 , a thigh motion lock  112 , and a height lock  114 . The motion locks  108 ,  110 ,  112 ,  114  may be toggled between their locked and unlocked states via the buttons  102   h ,  102   i ,  102   j ,  102   k  (or via any other suitable user input device). Each of these motion locks  108 ,  110 ,  112 ,  114  is electrically coupled to the controller  100  and sends a corresponding signal to the controller  100  to toggle to the locked state or the unlocked state when their associated user input devices (e.g., buttons) are actuated (e.g., touched, depressed, etc.). The controller  100  stores the current state of each of the motion locks  108 ,  110 ,  112 ,  114  in its memory and controls the actuators  80 ,  82 ,  96 ,  98  accordingly. In  FIG.  3   , a virtual lock symbol generated by the controller  100  and shown on the display  104  shows the current state of the motion locks  108 ,  110 ,  112 ,  114  (three are shown in the unlocked state and one is shown in the locked state in  FIG.  3   ). It should be appreciated that there may be more or fewer motion locks in some versions. 
     When the head motion lock  108  is in its locked state (also referred to as a deck locked state), the first user interface U 1  and/or the second user interface U 2  are inoperable to actuate the back section actuator  80  to raise or lower the back section  41 . When the head motion lock  108  is in its unlocked state (also referred to as a deck unlocked state), the first user interface U 1  and/or the second user interface U 2  are operable to actuate the back section actuator  80  to raise or lower the back section  41 . When the head motion lock  108  is toggled from the unlocked state to the locked state via the button  102   h , the controller  100  sets the current state for the head motion lock  108  in its memory to the locked state. Thereafter, until the head motion lock  108  is toggled back to the unlocked state, the controller  100  limits actuation of the back section actuator  80 , e.g., so that the back section actuator  80  will not function when the associated user input devices (e.g., buttons  102   c ,  102   d ) on the first user interface U 1  and/or the second user interface U 2  are actuated (e.g., touched, depressed, etc.). 
     When the 30-degree fowler lock  110  is in its locked state, the first user interface U 1  and/or the second user interface U 2  are inoperable to actuate the back section actuator  80  in a manner that lowers the back section  41  below an angle σ of 30 degrees. When the 30-degree fowler lock  110  is in its unlocked state, the first user interface U 1  and/or the second user interface U 2  are operable to actuate the back section actuator  80  to lower the back section  41  below an angle σ of 30 degrees. When the 30-degree fowler lock  110  is toggled from the unlocked state to the locked state via the button  102   i , the controller  100  sets the current state for the 30-degree fowler lock  110  in its memory to the locked state. Thereafter, until the 30-degree fowler lock  110  is toggled back to the unlocked state, the controller  100  limits actuation of the back section actuator  80 , e.g., so that the back section actuator  80  will not function in a manner that lowers the back section  41  below an angle σ of 30 degrees. 
     When the thigh motion lock  112  is in its locked state (also referred to as a deck locked state), the first user interface U 1  and/or the second user interface U 2  are inoperable to actuate the thigh section actuator  82  to raise or lower the thigh section  45 . When the thigh motion lock  112  is in its unlocked state (also referred to as a deck unlocked state), the first user interface U 1  and/or the second user interface U 2  are operable to actuate the thigh section actuator  82  to raise or lower the thigh section  45 . When the thigh motion lock  112  is toggled from the unlocked state to the locked state via the button  102   j , the controller  100  sets the current state for the thigh motion lock  112  in its memory to the locked state. Thereafter, until the thigh motion lock  112  is toggled back to the unlocked state, the controller  100  limits actuation of the thigh section actuator  82 , e.g., so that the thigh section actuator  82  will not function when the associated user input devices (e.g., buttons  102   e ,  1020  on the first user interface UI and/or the second user interface U 2  are actuated (e.g., touched, depressed, etc.). 
     When the height lock  114  is in its locked state (also referred to as a lift locked state), the first user interface U 1  and/or the second user interface U 2  are inoperable to actuate the lift actuators  96 ,  98  to lift or lower the support frame  36  and the patient support deck  38 . When the height lock  114  is in its unlocked state (also referred to as a lift unlocked state), the first user interface U 1  and/or the second user interface U 2  are operable to actuate the lift actuators  96 ,  98  to lift or lower the support frame  36  and the patient support deck  38 . When the height lock  114  is toggled from the unlocked state to the locked state via the button  102   k , the controller  100  sets the current state for the height lock  114  in its memory to the locked state. Thereafter, until the height lock  114  is toggled back to the unlocked state, the controller  100  limits actuation of the lift actuators  96 ,  98 , e.g., so the lift actuators  96 ,  98  will not function when the associated user input devices (e.g., buttons  102   a ,  102   b ) on the first user interface UI are actuated. 
     Another button  102   m  can be actuated by the user to cause two or more of the motion locks  108 ,  110 ,  112 ,  114  to be toggled to the locked state simultaneously. In the version shown, if all of the motion locks  108 ,  110 ,  112 ,  114  are currently in their unlocked state and the button  102   m  is actuated (e.g., touched, depressed, etc.), then the motion locks  108 ,  112 ,  114  are toggled to the locked state. The 30-degree fowler lock  110  remains in the unlocked state. Examples of motion locks and their control to lockout motion of actuators are described in U.S. Patent Application Pub. No. 2015/0000035, entitled “Patient Handling Device Including Local Status Indication, One-Touch Fowler Angle Adjustment, And Power-On Alarm Configuration,” filed on Sep. 17, 2014, which is hereby incorporated herein by reference. 
     Referring to  FIGS.  3  and  4 A , in situations where the patient requires emergency care (e.g., CPR) it may be desirable for the user to be able to quickly cause movement of the patient support deck  38  to a different configuration than its current configuration. However, the motion lock module  106  and associated user input devices  102  that allow setting (e.g., unlocking) of the motion locks  108 ,  110 ,  112 ,  114  may only be available on the second user interface U 2  at the foot end of the patient support apparatus  30 . Thus, if the user is already attending to the patient on a side of the patient support apparatus  30 , as shown in  FIG.  4 A , the user may be unable to quickly/easily access the second user interface U 2  at the foot end in order to reset all the motion locks  108 ,  110 ,  112 ,  114  to their unlocked states. As a result, an activator  120  is provided on the patient support apparatus  30  to signal an emergency event, and to cause the controller  100  to automatically reset all of the motion locks  108 ,  110 ,  112 ,  114  to their unlocked states so that the user can reconfigure the patient support deck  38  via the user input devices  102  on the first user interface U 1  provided on the side rail  54  (or other side rails). The activator  120 , when actuated by the user, effectively signals to the controller  100  to perform certain actions in preparation or anticipation of emergency care being performed, such as CPR. The user may actuate the activator  120  to signal that any form of emergency is occurring that requires immediate reconfiguration of the patient support apparatus  30 . 
     The activator  120  is coupled to the support structure  32  and to the controller  100  (see  FIG.  3   ) and is arranged to be actuated by a user to signal the emergency event. The activator  120  may be coupled to the base  34 , the support frame  36 , the patient support deck  38 , or at any other suitable location. In the version shown in  FIGS.  3  and  4 A , the activator  120  includes a manual lever  122  and a sensor S 2  arranged to sense actuation of the manual lever  122 . The manual lever  122  is shaped to be grasped and pulled by the user&#39;s hand to pivot the manual lever  122  about a pivot axis P (see  FIG.  3   ) fixed relative to the support frame  36 , but other forms of levers are also contemplated, such as foot pedals, and the like. The sensor S 2  is coupled to the controller  100  to transmit an input signal to the controller  100  indicating the emergency event so that the controller  100  detects when the emergency event has started. The sensor S 2  may be an accelerometer, gyroscope, limit switch, potentiometer, hall-effect sensor, motion sensor, other switch types, or any other suitable sensor for sensing actuation (e.g. movement) of the manual lever  122 . The sensor S 2 , for example, may be a potentiometer disposed at the pivot axis P, a hall-effect sensor to measure movement of the manual lever  122  via a magnet mounted to the manual lever  122 , an accelerometer attached to the manual lever  122 , a limit switch engaged when the manual lever  122  is in its normal, unactuated position, and disengaged when the manual lever  122  is actuated, or the like. In some versions, the activator  120  includes any user input device as previously described. 
     The manual lever  122 , in some versions, is operatively coupled to the back section actuator  80  and operable to cause the back section  41  to automatically articulate to its lowered position. For instance, the manual lever  122  may be mechanically connected to the back section actuator  80  via a mechanical linkage  124 , such as a Bowden cable (see  FIG.  3   ), to engage components in the back section actuator  80  (e.g., to disengage a motor, allow back driving of a motor, release a brake, etc.) which allows the back section  41  to lower under the weight of the patient acting on the back section  41 . Such a mechanical linkage between a manual lever and a back section actuator is disclosed, for example, in U.S. Pat. No. 7,836,531, entitled “CPR Drop Mechanism For A Hospital Bed,” filed Aug. 1, 2008, hereby incorporated herein by reference. 
     In some versions, the controller  100  is configured to automatically operate one or more of the deck actuators  80 ,  82  to articulate one or more of the deck sections  41 ,  43 ,  45 ,  47  to a lowered position in response to detecting the emergency event. For example, in versions without any mechanical linkage that allows the back section  41  to lower under the patient&#39;s weight, the controller  100  may instead automatically operate the back section actuator  80  to lower the back section  41  to its lowered position. The controller  100  may also be configured to automatically operate one or more of the lift actuators  96 ,  98  to lower the patient support deck  38  to the low height position in response to detecting the emergency event and to automatically operate a mattress inflation system to deflate the mattress  40  in response to detecting the emergency event. 
       FIGS.  4 A through  4 C  illustrate a sequence of steps taken by a user (e.g., a caregiver) during an emergency.  FIG.  4 A  shows the user actuating the manual lever  122  to signal the emergency event.  FIG.  4 B  shows the back section  41  after being moved to the lowered position in response to the user actuating the manual lever  122 . As noted previously, when the user actuated the manual lever  122 , the sensor S 2  sent a corresponding signal to the controller  100  to signal the emergency event. As a result of receiving the signal, the controller  100  automatically reset all of the motion locks  108 ,  110 ,  112 ,  114  to their unlocked states so that the user can reconfigure the patient support deck  38  via the user input devices  102  on the first user interface U 1  provided on the side rail  54  (or other side rails). Accordingly, for example, the user may be able to actuate the button  102   b  on the first user interface U 1  to lower the patient support deck  38  to the low height position (compare  FIG.  4 B  and  FIG.  4 C ). As a result, with the back section  41  flat and the patient support deck  38  lowered, the user may be able to get easier access to the patient to provide emergency care, such as CPR. 
     The controller  100  may include a monitoring module  126  (see  FIG.  3   ) configured to set a desired state of a plurality of conditions for the patient support apparatus  30 . The monitoring module  126  may control one or more visual indicators  128  (and/or other indicators, such as audible and tactile indicators) to indicate when the patient support apparatus  30  is in an undesired configuration in response to detecting one or more of the plurality of conditions being in an undesired state. This provides an alert/alarm to caregivers of the patient. The monitoring module  126  forms part of a software program operable by the controller  100  and includes executable code to be executed by one or more processors of the controller  100 . The monitoring module  126  may operate like the system disclosed in U.S. Patent Application Pub. No. 2015/0000035, entitled “Patient Handling Device Including Local Status Indication, One-Touch Fowler Angle Adjustment, And Power-On Alarm Configuration,” filed on Sep. 17, 2014, incorporated herein by reference. 
     The plurality of conditions to be set and monitored by the monitoring module  126  may include a brake condition that can be sensed by a brake sensor S 3  (e.g., braked or unbraked), a back section angle condition that can be sensed by the angle sensor S 1  (e.g., the back section  41  is at 30-degrees or higher or below 30-degrees), a height condition that can be sensed by sensors S 4  in the lift actuators  96 ,  98  (e.g., at the low height position or not at the low height position), a side rail condition that can be sensed by one or more side rail sensors S 5  (e.g., raised or not raised), a bed exit condition that can be sensed by load cells S 6  (e.g., patient in bed or not in bed), and the like. 
     Control of the visual indicators  128  to indicate whether or not the patient support apparatus  30  is in an undesired configuration could include changing color emitted from light emitting diodes (LEDs), activating/deactivating LEDs, changing output on the display  104 , activating/deactivating other lights, flashing the LEDs or other lights in one or more colors, etc. For example, the visual indicators  128  could be controlled by the controller  100  to initially emit light of one color (e.g., green) when the monitoring module  126  determines that the patient support apparatus  30  is in its desired configuration and may change from emitting light of one color to emitting light of another color (e.g., changing from green to amber or red) when the patient support apparatus  30  is no longer in its desired configuration. 
     The controller  100  is configured to disable the monitoring module  126  in response to detecting the emergency event. For example, if the user initially sets the desired states for each of the plurality of conditions to establish the desired configuration of the patient support apparatus  30 , and any one of the conditions falls outside of its set, desired state, then normally the one or more of the visual indicators  128  (and/or other indicators) would be controlled (e.g., changed, activated, deactivated, etc.) to alert caregivers that the patient support apparatus  30  is no longer in its desired configuration. However, when the user actuates the activator  120 , the controller  100  disables the monitoring module  126  so that the monitoring module  126  is no longer monitoring the conditions to detect when they change from their desired to undesired states. This can be useful, for example, to avoid alarms that may otherwise be distracting to caregivers providing emergency care to the patient. For instance, suppose the desired state for the side rails is that all the side rails  54 ,  56 ,  58 ,  60  are raised. When the emergency event is signaled, the user will quickly act to lower one or more of the side rails  54 ,  56 ,  58 ,  60  (see  FIG.  4 C ). By disabling the monitoring module  126 , the alarm that would normally be activated when the user lowers one of the side rails  54 ,  56 ,  58 ,  60  would not be activated, i.e., the visual indicators  128  would not be controlled by the controller  100  to indicate the alarm. 
     The controller  100  may also include a bed exit module  130  configured to detect when the patient exits the patient support deck  38  or moves too far away from a center of gravity of the patient support deck  38 . The bed exit module  130  controls one or more of the visual indicators  128  to alarm in response to detecting the patient exiting the patient support deck  38  or moving too far away from the center of gravity of the patient support deck  38 . As with the monitoring module  126 , the controller  100  is configured to disable the bed exit module  130 , and any associated alarms, in response to detecting the emergency event. The bed exit module  130  forms part of a software program operable by the controller  100  and includes executable code to be executed by one or more processors of the controller  100 . The bed exit module  130  may operate like the system disclosed in U.S. Patent Application Pub. No. 2015/0000035, entitled “Patient Handling Device Including Local Status Indication, One-Touch Fowler Angle Adjustment, And Power-On Alarm Configuration,” filed on Sep. 17, 2014, incorporated herein by reference. 
     One or more therapy devices  132  may be coupled to the controller  100  to provide therapy to the patient supported on the patient support deck  38 . The therapy devices  132  may include inflatable garments and associated pumps (e.g., a deep vein thrombosis sleeve and an air pump), patient warming systems that circulate warming/cooling fluids through pads placed on the patient and/or around the patient, turn assist bladders and pumps that provide rotation therapy to the patient, and the like. The one or more therapy devices  132  may be coupled to the controller  100  by wired and/or wireless connections. The controller  100  is configured to disable operation of the one or more therapy devices  132  in response to detecting the emergency event. For example, if the therapy device  132  includes a pump that operates to inflate/deflate one or more bladders, or a pump to circulate fluid for warming or cooling, the controller  100 , by virtue of being in wired and/or wireless communication with the pump, will transmit a control signal to the pump to deactivate the pump so that the pump is no longer operating. 
     In some versions, the activator  120  may be an external device, separate from the patient support apparatus  30 , that operates to signal the emergency event. For example, the activator  120  may be a monitor  140  that measures one or more physiological parameters (e.g., heart rate, blood pressure, oxygen saturation, temperature, etc.) of the patient on the patient support apparatus  30 . In this case, the controller  100  is in communication with the monitor  140 , via wired and/or wireless connections to receive values of the one or more physiological parameters and compare the values to threshold values (e.g., discrete values, ranges of values, etc.). The monitor  140  may thereby signal the emergency event to the controller  100  when the controller  100  receives a value, at, below, above, or outside the threshold value, that is indicative of the patient requiring emergency care. The controller  100  thereby detects the emergency event in response to the comparison of the measured/received values to the threshold values. 
     In some versions, the monitor  140  may utilize machine learning to learn normal values (e.g., discrete values, ranges of values, etc.) for the one or more physiological parameters of each patient. The threshold values for each patient could then be unique to each patient. For example, during times when the physiological parameters are normal, and not indicative of need for emergency care (e.g., CPR), the controller  100  may average the values over a period of time (e.g., an hour, hours, day, days, week, etc.) to establish the patient&#39;s normal values. The controller  100  may then set the threshold values as any values that deviate more than a predefined percentage or difference from the normal values. For instance, the threshold for heart rate may be equal to 40 beats per minute less than the patient&#39;s normal heart rate when lying on the patient support deck  38 . If the patient&#39;s normal heart rate is 100 beats per minute, the threshold value may be set at 60 beats per minute (100 beats per minute−40 beats per minute). Accordingly, if the monitor  140  (e.g., a heart rate monitor) transmits a signal indicating the patient&#39;s heart rate has reached and/or fallen below 60 beats per minute, this may signal an emergency event, and the controller  100  can respond accordingly, as described herein, (e.g., reset motion locks  108 ,  110 ,  112 ,  114  to their unlocked states, lower the back section  41  to its lowered position, lower the patient support deck  38  to its low height position, etc.). 
     Referring to  FIG.  5   , example steps are shown in a method for sensing and responding to the emergency event on the patient support apparatus  30 . The method includes, in step  200 , setting the plurality of motion locks  108 ,  110 ,  112 ,  114 . This includes providing the user access to the motion lock module  106  to allow the user to set the plurality of motion locks  108 ,  110 ,  112 ,  114  to their locked or unlocked states. In some cases when the patient support apparatus  30  is first powered, or when the software operating on the controller  100  is restarted, the motion locks  108 ,  110 ,  112 ,  114  may return to default settings, e.g., such as all being set to their unlocked states. In step  202 , the controller  100  stores the settings for the plurality of motion locks  108 ,  110 ,  112 ,  114 , including the default settings and/or user-defined settings. In step  204 , the controller  100  electronically detects the emergency event in response to actuation of the activator  120  or in response to the activator  120  transmitting a signal indicative of an emergency event (e.g., via the monitor  140 ). For example, this may include the sensor S 2  sensing the actuation of the activator  120  by the user and transmitting a corresponding signal to the controller  100  such that the controller  100  thereby detects the emergency event. This could also include the monitor  140  sending a measured value of a physiological parameter to the controller  100  that is indicative of an emergency event (e.g., deviates from normal values). In step  206 , the controller  100  automatically resets any of the plurality of motion locks  108 ,  110 ,  112 ,  114  that are in the locked state to their unlocked states in response to detecting the emergency event. 
     Several versions have been discussed in the foregoing description. However, the versions discussed herein are not intended to be exhaustive or limit the invention to any particular form. The terminology which has been used is intended to be in the nature of words of description rather than of limitation. Many modifications and variations are possible in light of the above teachings and the invention may be practiced otherwise than as specifically described. 
     The present disclosure also comprises the following clauses, with specific features laid out in dependent clauses, that may specifically be implemented as described in greater detail with reference to the configurations and drawings above. 
     Clauses 
     I. A patient support apparatus for sensing and responding to an emergency event, the patient support apparatus comprising: 
     a support structure having a support frame and a patient support deck with a deck section capable of articulation relative to the support frame; 
     a plurality of actuators coupled to the support structure, including a lift actuator to lift and lower the patient support deck relative to a floor surface and a deck actuator to articulate the deck section relative to the support frame; 
     a user interface to cause operation of the plurality of actuators, 
     an activator coupled to the support structure and arranged to be actuated by a user to signal the emergency event; and 
     a controller coupled to the activator, the user interface, and the plurality of actuators, the controller comprising a motion lock module having a plurality of configurable electronic motion locks including a first motion lock associated with the lift actuator and a second motion lock associated with the deck actuator; 
     wherein the first motion lock has a lift locked state in which the user interface is inoperable to actuate the lift actuator, and a lift unlocked state in which the user interface is operable to actuate the lift actuator; and the second motion lock has a deck locked state in which the user interface is inoperable to actuate the deck actuator, and a deck unlocked state in which the user interface is operable to actuate the deck actuator, and the controller is configured to automatically reset the first motion lock and the second motion lock to their unlocked states in response to detecting the emergency event. 
     II. The patient support apparatus of clause I, wherein the activator includes a manual lever and a sensor arranged to sense actuation of the manual lever, the sensor being coupled to the controller. 
     III. The patient support apparatus of clause II, wherein the manual lever is operatively coupled to the deck actuator and operable to cause the deck section to articulate to a lowered position. 
     IV. The patient support apparatus of any of clauses II-III, wherein the deck section is a back section. 
     V. The patient support apparatus of any of clauses II-IV, the controller being configured to limit actuation of the lift actuator when in the lift locked state and to limit actuation of the deck actuator when in the deck locked state. 
     VI. The patient support apparatus of any of clauses II-V, including a footboard coupled to the support structure. 
     VII. The patient support apparatus of clause VI, including a second user interface coupled to the footboard, wherein the second user interface includes a user input device to access the motion lock module and configure the first motion lock and the second motion lock. 
     VIII. The patient support apparatus of any of clauses II-VII, wherein the controller is configured to automatically operate the deck actuator to articulate the deck section to a lowered position in response to detecting the emergency event. 
     IX. The patient support apparatus of any of clauses II-VIII, wherein the controller is configured to automatically operate the lift actuator to lower the patient support deck in response to detecting the emergency event. 
     X. The patient support apparatus of any of clauses II-IX, wherein the controller includes a monitoring module configured to set a desired state of a plurality of conditions for the patient support apparatus and control a visual indicator to indicate that the patient support apparatus is in an undesired configuration in response to detecting one or more of the plurality of conditions being in an undesired state, wherein the controller is configured to disable the monitoring module in response to detecting the emergency event. 
     XI. The patient support apparatus of any of clauses II-X, wherein the controller includes a bed exit module configured to detect when a patient exits the patient support deck and control a visual indicator to indicate that the patient has exited the patient support deck in response to detecting the patient exiting the patient support deck, wherein the controller is configured to disable the bed exit module in response to detecting the emergency event. 
     XII. The patient support apparatus of any of clauses II-XI, including a therapy device coupled to the controller to provide therapy to a patient supported on the patient support deck, wherein the controller is configured to disable operation of the therapy device in response to detecting the emergency event. 
     XIII A method for sensing and responding to an emergency event on a patient support apparatus, the patient support apparatus including a support structure having a support frame and a patient support deck with a deck section capable of articulation relative to the support frame, a lift actuator to lift and lower the patient support deck relative to a floor surface, a deck actuator to articulate the deck section relative to the support frame, a user interface, and an activator coupled to the support structure to be actuated by a user to signal the emergency event, the method comprising the steps of: 
     storing settings for a plurality of configurable electronic motion locks including a first motion lock associated with the lift actuator and a second motion lock associated with the deck actuator, wherein the first motion lock has a lift locked state in which the user interface is inoperable to actuate the lift actuator and a lift unlocked state in which the user interface is operable to actuate the lift actuator and the second motion lock has a deck locked state in which the user interface is inoperable to actuate the deck actuator and a deck unlocked state in which the user interface is operable to actuate the deck actuator; 
     detecting the emergency event; and 
     automatically resetting the first and second motion locks to their unlocked states in response to detecting the emergency event. 
     XIV. The method of clause XIII, wherein detecting the emergency event includes sensing actuation of a manual lever. 
     XV. The method of clause XIV, comprising limiting actuation of the lift actuator when in the lift locked state and limiting actuation of the deck actuator when in the deck locked state. 
     XVI. The method of any of clauses XIV-XV, comprising providing access to a motion lock module to allow setting of the first motion lock and the second motion lock. 
     XVII. The method of any of clauses XIV-XVI, comprising automatically operating the deck actuator to articulate the deck section to a lowered position in response to detecting the emergency event. 
     XVIII. The method of any of clauses XIV-XVII, comprising automatically operating the lift actuator to lower the patient support deck in response to detecting the emergency event. 
     XIX. The method of any of clauses XIV-XVIII, comprising: 
     storing, in a monitoring module, settings for a desired state of a plurality of conditions for the patient support apparatus; 
     controlling a visual indicator, with the monitoring module, to indicate that the patient support apparatus is in an undesired configuration in response to detecting one or more of the plurality of conditions being in an undesired state; and 
     disabling the monitoring module in response to detecting the emergency event. 
     XX. The method of any of clauses XIV-XIX, comprising: 
     detecting when a patient exits the patient support deck using a bed exit module; 
     controlling a visual indicator, with the bed exit module, to indicate that the patient has exited the patient support deck in response to detecting the patient exiting the patient support deck; and 
     disabling the bed exit module in response to detecting the emergency event. 
     XXI. The method of any of clauses XIV-XX, comprising disabling operation of a therapy device in response to detecting the emergency event. 
     XXII. A system for sensing and responding to an emergency event, the system comprising: 
     an activator to signal the emergency event; and 
     a patient support apparatus including: 
     a support structure having a support frame and a patient support deck with a deck section capable of articulation relative to the support frame; 
     a plurality of actuators coupled to the support structure, including a lift actuator to lift and lower the patient support deck relative to a floor surface and a deck actuator to articulate the deck section relative to the support frame; 
     a user interface to cause operation of the plurality of actuators; and 
     a controller coupled to the activator, the user interface, and the plurality of actuators, the controller being configured to detect the emergency event and comprising a motion lock module having a plurality of configurable electronic motion locks including a first motion lock associated with the lift actuator and a second motion lock associated with the deck actuator; 
     wherein the first motion lock has a lift locked state in which the user interface is inoperable to actuate the lift actuator, and a lift unlocked state in which the user interface is operable to actuate the lift actuator; and the second motion lock has a deck locked state in which the user interface is inoperable to actuate the deck actuator, and a deck unlocked state in which the user interface is operable to actuate the deck actuator, and the controller is configured to automatically reset the first motion lock and the second motion lock to their unlocked states in response to detecting the emergency event. 
     XXIII. The system of clause XXII, wherein the activator is a heart rate monitor to measure a heart rate of a patient on the patient support deck, and the controller is configured to detect the emergency event in response to the heart rate of the patient falling below a threshold.