Patent Application
20230157912
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.
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.
Referring to
A support structure 32 provides support for the patient. The support structure 32 illustrated in
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'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
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
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 80a, 82a and drive rods 80b, 82b that extend and retract with respect to their associated actuator housing 80a, 82a (compare
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 S1 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 S1 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 S1 may include one or more accelerometers, tilt sensors, gyroscopes, potentiometers, hall-effect sensors, or the like. The angle sensor S1 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
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
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 U1 is shown mounted to one of the side rails 54, 56, 58, 60. The first user interface U1 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 U1 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 U1 is coupled to the controller 100. The first user interface U1 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'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
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 102b, 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 102d, 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 U2 is shown mounted to the footboard 46. The second user interface U2 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 U2 is coupled to the controller 100. The second user interface U2, like the first user interface U1, has one or more user input devices 102, which transmit corresponding input signals to the controller 100. The second user interface U2 includes the functionality of the first user interface U1 but also has additional functionality as described further below. In the version shown in
One of the buttons disposed about the display 104 of the second user interface U2, is a lock button 102g represented by a lock symbol. When actuated, a sensor (e.g., a switch) associated with the lock button 102g 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 102h, 102i, 102j, 102k (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 102h, 102i, 102j, 102k (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
When the head motion lock 108 is in its locked state (also referred to as a deck locked state), the first user interface U1 and/or the second user interface U2 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 U1 and/or the second user interface U2 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 102h, 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 102c, 102d) on the first user interface U1 and/or the second user interface U2 are actuated (e.g., touched, depressed, etc.).
When the 30-degree fowler lock 110 is in its locked state, the first user interface U1 and/or the second user interface U2 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 U1 and/or the second user interface U2 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 102i, 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 U1 and/or the second user interface U2 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 U1 and/or the second user interface U2 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 102j, 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 102e, 1020 on the first user interface UI and/or the second user interface U2 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 U1 and/or the second user interface U2 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 U1 and/or the second user interface U2 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 102k, 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 102a, 102b) on the first user interface UI are actuated.
Another button 102m 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 102m 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
The activator 120 is coupled to the support structure 32 and to the controller 100 (see
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
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'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.
The controller 100 may include a monitoring module 126 (see
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 S3 (e.g., braked or unbraked), a back section angle condition that can be sensed by the angle sensor S1 (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 S4 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 S5 (e.g., raised or not raised), a bed exit condition that can be sensed by load cells S6 (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
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'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's normal heart rate when lying on the patient support deck 38. If the patient'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'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
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.
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.
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.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2021/034401 | 5/27/2021 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63030585 | May 2020 | US |
