Patent Description:
This disclosure is directed to systems and methods related to mechanical cardiopulmonary resuscitation (CPR) devices, and in particular, to adjustable back plates or backboards that support a patient and accommodate a variety of patient sizes.

Mechanical compression devices for CPR are being increasingly adopted by emergency medical services around the world. Patients, however, come in a wide variety of sizes and many mechanical compression devices are designed to only accommodate patients of a certain size. However, some patients have a body habitus that falls outside the acceptable range for the device's specifications and therefore can be excluded from receiving the benefits of mechanical CPR. For example, patients that are smaller or pediatric, as well as larger patients, may not fit within the acceptable range for the device's specifications.

Some clinicians have developed ad-hoc solutions, especially for pediatric patients. For example, sometimes clinicians will place a towel underneath a pediatric patient and/or configure the piston of the CPR device to start compression one to two centimeters above the sternum of the patient. Such ad-hoc approaches can lead to significant injury to the patient if not performed correctly. For example, if a compression depth is not controlled correctly, it can lead to rupture of the heart or other organs.

Given the growing evidence of benefits of using mechanical compressions, especially in longer duration resuscitations, and the risk of either not being able to perform the compressions or doing so using ad-hoc approaches, a solution is needed for delivering precise, consistent, predictable, and safe mechanical compression for smaller patients and larger patients that do not fit within the acceptable body size for current mechanical devices.

Configurations of the disclosed technology address shortcomings in the prior art.

Document <CIT> discloses an automated chest compression (CC) system that includes a chest compressor configured to administer chest compressions to a patient and discloses a patient tilt support which may couple to the platform at a pivot point and allows to adjust a tilt angle and a distance of the patient support from the support surface.

Document <CIT> discloses support and retention including an upper back supporting portion spaced in part at least from the base providing a clearance opening for insertion of a mechanical compressor platform without requiring movement of the patient.

Document <CIT> discloses a back plate for use with a CPR compression device which comprises first and second static attachment elements configured on first and second sides, respectively, to releasably connect to first and second legs, respectively.

Document <CIT> discloses an electric control pneumatic cardio-pulmonary resuscitation machine and belongs to the field of medical machinery.

The description and drawings related to <FIG>, <FIG>, and <FIG> also present additional non-claimed embodiments, exemplary embodiments, examples, aspects and implementations for the better understanding of the claimed embodiments defined in the appended claims.

Example <NUM> includes a backboard for a chest compression device, comprising: a first side structured to accommodate an adult-sized patient at a first distance from a surface when attached to the chest compression device in a first orientation; and a second side structured to accommodate a pediatric-sized patient at a second distance from the surface, the second distance being greater than the first distance, when attached to the chest compression device in a second orientation. Example <NUM> includes the backboard of Example <NUM>, wherein the first side includes two attachment points, each attachment point structured to attach a respective leg of the chest compression device to the backboard when in the first orientation, and wherein the second first side includes two attachment points, each attachment point structured to attach a respective leg of the chest compression device to the backboard when in the second orientation.

Example <NUM> includes the backboard of any of Examples <NUM>-<NUM>, wherein the first side has a first curvature and the second side has a second curvature different from the first curvature. Example <NUM> includes the backboard of Example <NUM>, wherein the backboard is wedge-shaped.

Example <NUM> includes the backboard of any of Examples <NUM>-<NUM>, further comprising a retractable headrest.

Example <NUM> includes the backboard of Example <NUM>, wherein the first side is concave and the second side includes a flat section to accommodate the pediatric-sized patient.

Example <NUM> includes the backboard of any of Examples <NUM>-<NUM>, further comprising an identifier configured to identify the backboard to the chest compression device.

Example <NUM> includes a chest compression device, comprising: a chest compression member; the backboard of any of Examples <NUM>-<NUM>; and a controller configured to determine an identification of the backboard and adjust the chest compression member based on the identification.

Example <NUM> includes the chest compression device of Example <NUM>, wherein the backboard includes a first identification component identifying the first orientation associated with the first side of the backboard and a second identification component identifying the second orientation associated with the backboard, and the controller is configured to received one of the first orientation or the second orientation from the backboard and control the chest compression member based on the received orientation.

Example <NUM> includes the chest compression device of Example <NUM>, wherein the first identification component is located in a first connector associated with the first side of the backboard, the first connector configured to attach to a leg of the chest compression device when the backboard is the first orientation, and wherein the second identification component is located in a second connector associated with the second side of the backboard, the second connector configured to attach to the leg of the chest compression device when the backboard is in the second orientation.

Example <NUM> includes the chest compression device of any of Examples <NUM>-<NUM>, wherein the controller is configured to determine the identification of the backboard based on a characteristic of a first connector or a second connector.

Example <NUM> includes the chest compression device of Example <NUM>, wherein the characteristic includes at least one of an angle of a leg of the chest compression device connected to a respective connector of the backboard or a size of an anchoring point of the respective connector.

Aspects, features and advantages of examples of the present disclosure will become apparent from the following description of examples in reference to the appended drawings in which:.

Examples of the disclosure are directed to adjustable back plates or backboards for a mechanical compression device to accommodate different patient sizes or for ease of storage. As will be discussed in more detail below, examples of the disclosure includes back plates that can be folded, pieced together, or otherwise have a variable distance between connectors that attach to the legs of the chest compression device. Examples also include back plates which may have two sides to accommodate different patient sizes.

<FIG> is a front view of an example CPR device <NUM> of <FIG>. While <FIG> is described to illustrate a mechanical compression device, examples of the disclosure are not limited to this particular type of compression device, but may be used with any compression device.

As will be understood by one skilled in the art, the mechanical CPR device <NUM> may include additional components not shown in <FIG>. As illustrated in <FIG>, a CPR device <NUM> may include a support structure <NUM> and a central unit <NUM>. The support structure <NUM> may include a support legs <NUM> and a base member <NUM>. The support legs <NUM> and the base member <NUM> each meet at a junction <NUM> between the support leg <NUM> and the base member <NUM>.

The support legs <NUM> may be configured to support central unit <NUM> at a distance from the base member <NUM>. For example, if the base member <NUM> is underneath the patient, who is lying on the patient's back, then the support leg <NUM> may support the central unit <NUM> at a sufficient distance over the base member <NUM> to allow the patient to lay within a space between the base member <NUM> and the chest compression mechanism <NUM>, while positioning the chest compression mechanism <NUM> over the patient's chest. The base member, or back plate, <NUM> may be configured to be placed underneath the patient, for example when the patient is lying on the patient's back.

The central unit <NUM> may be configured to deliver CPR chest compressions to the patient. The central <NUM> may include, for example, a motor-driven piston <NUM> configured to contact the patient's chest through the suction cup <NUM> to provide the CPR compressions. The central unit <NUM> may also include a number of electronic components to drive the motor-driven piston <NUM>. Attached the motor-driven piston <NUM> is a suction cup <NUM> which adheres to the chest of the patient during chest compressions. The suction cup <NUM> can allow the motor-driven piston <NUM> to lift the chest back to a resting height, or provide a full decompression of the chest of the patient, when the motor-driven piston <NUM> is retracted from an extended position.

<FIG> illustrate a back plate <NUM> according to some examples of the disclosure outside of the scope of protection. Back plate <NUM> may be used instead of base member <NUM> discussed above to provide an adjustable back plate to accommodate different patient sizes. The back plate <NUM> includes two connection rails, or connectors, <NUM> which are structured to attach to a leg of the mechanical compression device. For example, the leg of the mechanical compression device may have a claw-like attachment member which can attach to connector <NUM>. Other connection mechanisms may be utilized and examples of the disclosure are not limited to rail connectors. For example, the connectors <NUM> may slide into a receptacle in the leg of the compression device to attach the leg to the back plate <NUM>. The connector <NUM> may form part of a handle for carrying the backboard <NUM>.

The back plate <NUM> includes an adjustable elongated portion <NUM> that extends along an axis between the first connector <NUM> and the second connector <NUM>. The elongated portion <NUM> may be telescoping and include a first portion <NUM> that is structured to receive or slide relative to a second portion <NUM>. That is, the second portion <NUM> can slide within a compartment of the first portion <NUM>. Although not shown, in some example, multiple portions <NUM> may be provided that can slide within compartments of each other. For example, a middle portion may slide within compartments of two outside portions. That is, the outside portions can either abut each other, or may be extended such that middle portion is exposed to laterally extend the backboard <NUM>.

A number of different stops may be provided within the first portion <NUM> to select a size for the back plate <NUM>. For example, a rescuer may release a clamp <NUM> which can allow the second portion <NUM> to slide in or out of the first portion <NUM>. The rescuer may re-engage the clamp to set the length of the back plate <NUM> in one or more slots <NUM>. The clamp, for example, may engage with a slot <NUM> or other type of recess to lock the second portion <NUM> relative to the first portion <NUM>. Other locking mechanisms may be used as well and examples of the disclosure are not limited to a clamp style locking mechanism.

<FIG> illustrates the back plate <NUM> in the most extended position, while <FIG> illustrates the back plate <NUM> in a contracted position. The back plate <NUM> can be expanded or contracted between any of the two positions, such that the elongated portion <NUM> has a variable distance between the connectors <NUM>.

<FIG> illustrate an example outside of the scope of protection of a back plate <NUM> which may be folded to save space during transportation. The back plate <NUM> can include two connectors <NUM>, similar to connectors <NUM> discussed above. Connectors <NUM> are not limited to rails, but may be any type of connection mechanism that can engage with a leg of a mechanical compression device. The connector <NUM> may form part of a handle for carrying the backboard <NUM>.

The back plate <NUM> includes an elongated portion <NUM> that extends between the connectors <NUM>. The elongated portion <NUM> includes two segments <NUM> and <NUM>. The two sections <NUM> and <NUM> are connected by one or more hinges <NUM>. The hinges <NUM> allow the elongated portion <NUM> to be folded so that one of the segments of <NUM> or <NUM> is on top of the other segment <NUM> or <NUM>.

In some examples, an optional connector <NUM> may be added to either one of segments <NUM> and <NUM>. In <FIG>, the optional connector <NUM> is shown as part of segment <NUM> located near the hinge <NUM>. The optional connector <NUM> can allow the backboard to be utilized with the mechanical compression device when folded.

<FIG> illustrates the back plate <NUM> in a folded configuration, which can allow for easier storage during transportation and the back plate <NUM> takes up less physical space during transportation.

Examples of the disclosure outside of the scope of protection are not limited to a back plate with two segments. As illustrates in <FIG>, a back plate <NUM> can include a number of different segments. Although four segments are shown in this example, three segments or more than four segments could be included in the back plate <NUM> to offer variety in the sizes the back plate <NUM> may be folded into. The back plate <NUM> includes connectors <NUM> similar to connectors <NUM> and <NUM> above. The connector <NUM> may form part of a handle for carrying the backboard <NUM>.

An elongated portion <NUM> of back plate <NUM> is composed of four segments <NUM>, <NUM>, <NUM>, and <NUM>, in this example. Segments <NUM> and <NUM> extend from the connectors <NUM>, and segment <NUM> is attached to segment <NUM> by one or more hinges <NUM>. Segment <NUM> is also connected to segment <NUM>, which is then connected to segment <NUM>, each by hinges <NUM>.

The back plate <NUM> may be foldable in different configurations for use with different sized patients. For example, in one configuration, segment <NUM> can be folded via the hinge <NUM> to be on top of segment <NUM>, while segment <NUM> is folded over segment <NUM>. That is, this configuration would result in an elongated portion <NUM> which is two segments wide, segments <NUM> and <NUM> to accommodate a smaller patient. To accommodate a larger patient, the back plate <NUM> is unfolded in its entirety to be four segments wide.

Either or both of segments <NUM> and <NUM> may also include a connector <NUM> on an edge to allow for a three segment wide back plate <NUM>. <FIG>, for example illustrates an optional connector <NUM> as part of segment <NUM> along the edge of segment <NUM> that attaches via the hinge <NUM> to segment <NUM>. Segment <NUM> can be folded by the hinge <NUM> to be under the segment <NUM> and a leg of the mechanical compression device can attach both to the connector <NUM> attached to segment <NUM> and the connector <NUM> attached to segment <NUM> to provide a backboard that is three segments wide. If five or more segments are provided, the back plate <NUM> may be folded to be in any number of different widths suitable for patients of different sizes, especially when each segment includes a connector <NUM>.

Although hinges are illustrated above with respect to backboards <NUM> and <NUM>, any type of joint may connect the various segments of the backboard together, either permanently or releaseably. If permanent, the joint allows the segments to pivot or rotate about the joint to fold the back plate in different configurations and sizes.

<FIG> illustrates another example of a back plate <NUM> outside of the scope of protection, which can include connectors <NUM> similar to connectors <NUM>, <NUM>, and <NUM> discussed above. The connector <NUM> may form part of a handle for carrying the backboard <NUM>. Rather than having segments attached by hinges <NUM>, as illustrated in <FIG>, the elongated portion <NUM> may have a variable distance between the connectors <NUM> by having multiple segments <NUM>, <NUM>, <NUM>, and <NUM> which can be releaseably connected together. For example, segment <NUM> may include a connector <NUM> on one edge and a recess <NUM> on another edge to connect to a corresponding protrusion <NUM> on segment <NUM>. Segment <NUM> may include a recess <NUM> on the opposite edge, which can receive a protrusion <NUM> of a connecting segment.

Multiple back plate segments may be combined together, so additional segments may be provided, with one edge having a recess <NUM> and the other edge having a notch <NUM>. <FIG> illustrates four segments, but additional or fewer middle segments may be provided similar to segments <NUM> and <NUM>. In some examples, segment <NUM> may connect directly to segment <NUM> to create a two segment wide back plate. The back plate segments can be disassembled for storage and reassembled to the correct size during mechanical CPR. Although a dovetail connection is shown in <FIG>, any type of fastener to connect the segments together may be used. For example, a weaver rail connection may be used, or a stud and tube connection, as well as other types of fasteners.

<FIG> illustrate another example of a backboard <NUM> according to some examples of the disclosure. Backboard <NUM> includes two connectors <NUM> and <NUM> and an elongated portion <NUM> extending between the two connectors <NUM> and <NUM>. Although not illustrated in this example, the elongated portion <NUM> may have a variable distance like any of the backboards discussed above in some examples.

The two connectors <NUM> and <NUM> can pivot about a shaft that is parallel to a central axis <NUM> of the backboard <NUM>. This direction is also indicated by arrow <NUM> in <FIG>. When not in use, the connectors <NUM> and <NUM> can be folded underneath the elongated portion <NUM>. During use, the connectors <NUM> and <NUM> can be rotated to a desired position.

In the examples illustrated in <FIG>, two possible positions connection positions for the connectors <NUM> and <NUM> are shown. First, a lower position, as illustrated by connector <NUM> which can allow the compression mechanism <NUM> to sit closer to a smaller patient's chest relative to the elongated portion <NUM>. A second position is illustrated by connector <NUM> which is a higher position to allow the mechanical compression device to accommodate a patient with a great chest height since the compression mechanism <NUM> will sit higher relative to the elongated portion <NUM>. When not in use, the connectors <NUM> and <NUM> can be rotated about the shaft and hidden beneath the elongated portion <NUM>.

A stopper or other locking mechanism, such as a clamp, may be provided to lock the connectors <NUM> and <NUM> in their desired position. In some examples, set connection positions may be provided that a rescuer may select. In other examples, a rescuer may select any connection position along the rotating axis for the connectors <NUM> and <NUM>. Although two connection positions are illustrated in <FIG>, any number of connection positions may be provided. As will be understood by one having ordinary skill in the art, during use the connectors <NUM> and <NUM> will most likely be set to the same corresponding position. However, depending on a topography of a patient's chest, it may be beneficial in some situations to set the connectors <NUM> and <NUM> at different connection positions.

<FIG> illustrate another example of a backboard <NUM> according to some examples of the disclosure. The backboard <NUM> includes removable connectors <NUM> and <NUM>. Distal ends of an elongated portion <NUM> include a plurality of recesses <NUM>. Although two recesses <NUM> are shown in <FIG>, more than two <NUM> recesses may be provided.

Each of the connectors <NUM> and <NUM> includes a protrusion <NUM> that is structured to fit within the recesses <NUM>. The connectors <NUM> and <NUM> can be connected in the desired position to the backboard <NUM> to accommodate different patient sizes. For example, in <FIG>, the connector <NUM> is positioned in the bottom recess <NUM> to accommodate a smaller patient and connector <NUM> is positioned in an upper recess <NUM> to accommodate a larger patient. The connectors <NUM> and <NUM> may be removed when the backboard <NUM> is not in use.

Although a dovetail connection is shown in <FIG>, any type of fastener to connect the connectors <NUM> and <NUM> to the elongated portion <NUM> may be used. For example, a weaver rail connection may be used, or a stud and tube connection, as well as other types of fasteners.

<FIG> illustrates an example locking mechanism <NUM> which may be used in some examples to lock the connectors <NUM> and <NUM> within the recesses <NUM>. In some examples, an engagement mechanism <NUM> may be provided on one or both sides of the connectors <NUM> and <NUM>. The engagement mechanism <NUM> for example may be a component which can be manipulated to engage the locking mechanism <NUM>, such as plunger. The locking mechanism <NUM> engages with some portion of the recesses <NUM> to keep the connectors <NUM> in place within the recess <NUM> during operation of a mechanical compression device.

<FIG> illustrate another example of a backboard <NUM> according to some examples of the disclosure. Backboard <NUM> can include multiple connectors <NUM> and <NUM> on each side of an elongated portion <NUM> that expands between the connectors <NUM> and accommodates a patient when a mechanical chest compression device is attached to one of the connectors <NUM> and <NUM> on each side. In some examples, the elongated portion <NUM> may have a variable width or distance, as discussed above.

Connector <NUM> is are stationary connection points for respective legs of a mechanical compression device. Connector <NUM> is provided lower relative to connector <NUM> to provide a connection point to accommodate smaller patients. When legs of a mechanical compression device are connected or attached to connector <NUM>, a compression mechanism is lower and positioned closer to a top surface of elongated portion <NUM>.

Connectors <NUM> are extendable relative to the elongated portion <NUM>. That is, connectors <NUM> have a variable distance between each other. As illustrated in <FIG>, when connectors <NUM> are in their retracted position, legs of the mechanical chest compression device cannot attach to the connectors <NUM> and can only attached to connectors <NUM>. When connectors <NUM> are each extended, as illustrated in <FIG>, from the elongated portion <NUM>, respective legs of the mechanical compression device can attach or couple to the connector <NUM> to provide compressions to a chest of a patient. Generally, connectors <NUM> are extended to accommodate patients with larger chest heights so that a compression mechanism of a mechanical compression device is positioned at a higher position relative to a top surface of the elongated portion <NUM>.

As will be understood by one skilled in the art, although not shown, in some examples the extendable connectors <NUM> can be locked relative to the elongated portion <NUM> and held rigid when attached to a mechanical compression device. Any type of locking mechanism may be used, such as a clamp, to ensure that the extendable connectors <NUM> are stable during mechanical CPR. In other examples, the connection and force of the mechanical compression device may keep the extendable connectors <NUM> rigid and no locking mechanism is provided or needed.

<FIG> illustrate a back plate <NUM> which can accommodate two different patient sizes, an adult patient and a smaller or pediatric patient. Back plate <NUM> includes an adult patient side <NUM> and a pediatric (or smaller) patient side <NUM>. <FIG> illustrates when the adult patient side <NUM> is in use with an adult patient <NUM> and <FIG> illustrates when the pediatric patient side <NUM> is in use with a pediatric or smaller patient <NUM>.

The adult patient side <NUM> can include a curved portion <NUM> spanning between two connectors <NUM> which are structured to attach to legs <NUM> of a mechanical compression device <NUM>. The pediatric patient side <NUM> also includes a curved portion <NUM> spanning between two connectors <NUM> which are structured to attach to legs <NUM> of the mechanical compression device <NUM>.

Each curved portion <NUM> and <NUM> are curved differently to accommodate the different patient sizes. For example, curved portion <NUM> may be more deeply curved so the patient <NUM> sits lower relative to the connectors <NUM> and the mechanical compression device <NUM>. That is, the radius of curvature of the curved portion <NUM> can be greater than the radius of the curved portion <NUM>. This can allow for a patient <NUM> with a larger sternum height to receive the compressions. Curved portion <NUM>, on the other hand, is curved so that the patient <NUM> sits higher relative to the connectors <NUM> and the mechanical compression device <NUM> to allow a patient with a smaller sternum height to receive the mechanical compressions.

When the adult patient side <NUM> is in use, the pediatric patient side <NUM> supports the adult patient side <NUM> on a ground or other surface. Conversely, when the pediatric patient side <NUM> is in use, the adult patient side <NUM> supports the pediatric patient side <NUM> on the ground or other surface.

Examples of the disclosure are not limited to the curve shapes shown in the backboard <NUM> in <FIG>. <FIG> illustrate a backboard <NUM> that also includes a larger or adult patient side <NUM> and a pediatric or smaller patient side <NUM>.

Backboard <NUM> includes a concave portion <NUM> on the adult patient side <NUM> between two connectors <NUM> and a flat portion <NUM> on the pediatric patient side <NUM> between two connectors <NUM>. Similar to the backboard <NUM>, the connectors <NUM> and <NUM> are structured to attach to or receive a leg <NUM> of a mechanical compression device <NUM>.

In some examples, although referred to as a flat portion <NUM> on the pediatric patient side <NUM>, the pediatric patient side <NUM> may include a convex portion with a center portion that is flat to accommodate a patient. That is, both the pediatric patient side <NUM> and the adult patient side <NUM> may have a curvature, and the curvature may include a flat portion. A radius of the curvature of the pediatric patient side <NUM> is less than a radius of the curvature of the adult patient side <NUM>. In other examples, rather than a convex portion, a concave portion with a center flat portion may be provided on the pediatric patient side <NUM>. In some examples, the flat portion <NUM> can be a convex with a radius different than the opposite side curvature radius. Similar to the backboard <NUM> discussed above, when the adult patient side <NUM> is in use, the pediatric patient side <NUM> supports the adult patient side <NUM> on a ground or other surface. Conversely, when the pediatric patient side <NUM> is in use, the adult patient side <NUM> supports the pediatric patient side <NUM> on the ground or other surface.

The pediatric patient side <NUM> may additionally or alternatively include connectors <NUM> which are located on the outer edges of the flat portion <NUM>. If both connectors <NUM> and <NUM> are included in the backboard <NUM>, a rescuer can choose which connectors <NUM> or <NUM> to use to position the mechanical compression device <NUM> in the needed position for the smaller patient.

<FIG> illustrates another example of a backboard <NUM> outside of the scope of protection that can accommodate different patient sizes. Backboard <NUM> may be wedge-shaped to facilitate a smooth body position for the patient since lifting the patient chest only may lead to reduced efficacy of the CPR being administered.

The backboard <NUM> may be shaped so that a first side of the backboard <NUM> provides a first angled incline and the second side of the backboard <NUM> provides a second angled incline, the second angled incline being greater than the first angled incline to accommodate a smaller patient. The second side allows a smaller patient to be higher and therefore closer to the chest compression mechanism.

The backboard <NUM> may include a connector <NUM>, which may be, for example, a connector rail which can receive a claw-like attachment member of a leg <NUM> of the chest compression device <NUM>.

Rather than having two sides, the backboard <NUM> may be longer and have a longer connector <NUM> so that a patient can be placed at the desired position along the backboard <NUM>. For example, smaller patients may be placed on the higher inclined angle of the backboard <NUM> while larger patients may be placed lower on the inclined angle of the backboard <NUM>. The mechanical compression device <NUM> may then be connected to the connector <NUM> by the legs <NUM> at a location that corresponds to the compression point on the patient.

Any of the backboards discussed above may include a retractable or detachable head rest to accommodate a head of a patient and to prevent the chest from being higher than the head of the patient. Such a retractable or detachable head rest <NUM> is illustrated in <FIG>, but as will be understood by one skilled in the art, could be included with any one of backboard <NUM>, backboard <NUM>, and backboard <NUM>. Additionally or alternatively, the backboards <NUM>, <NUM>, and <NUM> may be the length of the patient to help support the head of the patient relative to the backboard. For ease of transportation, the backboard <NUM>, backboard <NUM>, and backboard <NUM> may be collapsible or otherwise contractible into a smaller footprint for ease of transportation and storage. For example, if the backboard <NUM>, <NUM>, or <NUM> is the length of the patient, the backboard <NUM>, backboard <NUM>, or backboard <NUM> may be telescoping to reduce the length of the backboard when not in use.

<FIG> illustrates an example schematic block diagram of a mechanical compression device <NUM>. As will be understood by one skilled in the art, the mechanical compression device <NUM> may include additional components not shown in <FIG>. The mechanical compression device <NUM> includes a controller <NUM>, which may be in electrical communication with a compression member <NUM>, which can include a piston and a suction cup.

The controller <NUM>, as will be discussed in more detail below, provides instructions to the compression member <NUM> to operate the compression member <NUM> at a number of different rates, waveforms, depths, heights, duty cycles or combinations thereof that change over time. Example chest and/or abdomen manipulation instructions or protocols include compressing a chest and/or abdomen and decompressing and/or expanding of a chest and/or abdomen of a patient.

The controller <NUM> may include a processor <NUM>, which may be implemented as any processing circuity, such as, but not limited to, a microprocessor, an application specific integration circuit (ASIC), programmable logic circuits, etc. The controller <NUM> may further include a memory <NUM> coupled with the processor <NUM>. Memory <NUM> can include a non-transitory storage medium that includes programs <NUM> configured to be read by the processor <NUM> and be executed upon reading. The processor <NUM> is configured to execute instructions from memory <NUM> and may perform any methods and/or associated operations indicated by such instructions. Memory <NUM> may be implemented as processor cache, random access memory (RAM), read only memory (ROM), solid state memory, hard disk drive(s), and/or any other memory type. Memory <NUM> acts as a medium for storing data <NUM>, such as instructions for the compression member <NUM> based on a type of suction cup attached, event data, patient data, etc., computer program products, and other instructions.

Controller <NUM> may further include a reader <NUM>. The reader <NUM> can receive a signal or otherwise sense a type of backboard and orientation of a backboard through an identifier <NUM>. The reader <NUM> may be, for example, an RFID reader, a quick response (QR) code reader, or may receive an input signal from an attached backboard.

The controller <NUM> may be located separately from the compression member <NUM> and may communicate with the compression member <NUM> through a wired or wireless connection. The controller <NUM> also electrically communicates with a user interface <NUM>. As will be understood by one skilled in the art, the controller <NUM> may also be in electronic communication with a variety of other devices, such as, but not limited to, a communication device, another medical device, etc..

Operations of the medical device <NUM> may be effectuated through the user interface <NUM>. The user interface <NUM> may be external to or integrated with a display. For example, in some examples, the user interface <NUM> may include physical buttons located on the medical device <NUM>, while in other examples, the user interface <NUM> may be a touch-sensitive feature of a display. The user interface <NUM> may be located on the medical device <NUM>, or may be located on a remote device, such as a smartphone, tablet, PDA, and the like, and is also in electronic communication with the controller <NUM>. In some examples, controller <NUM> can receive a rate, a waveform, and/or depth input from the user interface <NUM> and, responsive to the rate, the waveform, and/or depth input, cause the compression member <NUM> to move to adjust the rate, waveform, and/or depth of the compression, decompression, or expansions during a session.

The backboard, such as any one of the backboards discussed above, may have one or more identifiers <NUM>, which may be an RFID tag, a QR code on the suction cup, a chip, such as, but not limited to, an erasable programmable read-only memory, or any other identifier <NUM> that has a proprietary code or other identification which can be read by the reader <NUM>. The identifier <NUM> may be located anywhere on or in the backboard. The backboard may also include multiple identifiers <NUM> to indicate a type and orientation of an attached backboard.

For example, an identifier <NUM> may be an RFID tag embedded in both an adult patient side and a pediatric patient side of the backboard, and the reader <NUM> can read the RFID tag that is closest, telling the controller <NUM> what orientation the backboard is in and setting a protocol based on the orientation. Additionally or alternatively, the connectors of the backboard may include a chip or other identifier <NUM> which is electrically connected to the reader <NUM> by the connectors. That is, the properties of the circuit created by the electrical connection between the identifier <NUM> and the reader <NUM> can instruct the controller <NUM> what orientation the backboard is in. A QR code may be printed on each side of the backboard and can be readable by the reader <NUM>. Depending on which QR code is read by the reader <NUM> would indicate which orientation the backboard is in.

Additionally or alternatively, one or more sensors <NUM> may be attached to mechanical components of the mechanical compression device <NUM> and the controller <NUM> can determine what type of backboard is attached based on the position of components of the mechanical compression device <NUM>. For example, legs of mechanical compression device may be attached to a central unit by hinges, as illustrated in <FIG>. The one or more sensors <NUM> can determine the angle of the hinge and from that information determine what type of backboard is attached to the legs. For example, if the angle is greater than a threshold, the controller <NUM> may determine the backboard is an adult orientation, whereas if the angle is less than a threshold, the controller <NUM> may determine the backboard is in the pediatric orientation.

Additionally or alternatively, the connector of the backboard that attaches to the leg of the mechanical compression device may have a particular width or diameter to indicate what orientation the backboard is in. For example, the adult side of the backboard may have a wider connector than the pediatric side of the backboard. A sensor <NUM> may be provided in the attachment mechanism of the leg of the mechanical compression device <NUM> and based on how wide or narrow the claw is to engage the connector can inform the controller <NUM> which orientation the backboard is in.

The memory <NUM> can store a number of CPR protocols that can be activated based on the identifier <NUM> read by the reader <NUM>. The CPR protocols may include, for example, at least one of a pediatric CPR protocol and an adult CPR Protocol. The protocol may be activated by the controller <NUM> based on the identifier <NUM> stored on the backboard. Examples of the disclosure, however, are not limited to these types of protocols and other protocols may also be stored in the memory <NUM> and activated based on the identifier <NUM> on or in the backboard.

<FIG> illustrate another example of a backboard <NUM> that can accommodate different patient sizes. Similar to many of the backboards discussed above, backboard <NUM> can include a connection rail <NUM> on opposite ends of the backboard <NUM>. The connection rails <NUM> are structured receive a leg of a chest compression device to attach the chest compression device to the backboard <NUM>. For example, an end portion of legs of the chest compression device may include a claw-like member that can grab or attach onto the connection rails <NUM>. However, other types of connections may be used as well.

Backboard <NUM> can include a number of different apertures <NUM> that are structured or shaped to receive stabilizing members <NUM>, which are illustrated in <FIG>. While <FIG> illustrates three apertures <NUM> on each side of the backboard <NUM>, examples of the disclosure are not limited to six apertures <NUM> and any number of apertures may be provided in the backboard <NUM>, as long as an equal number of apertures <NUM> are provided on each side of the backboard between a patient receiving section <NUM> of the backboard. Further, while <FIG> illustrates the apertures <NUM> having a support beam in the middle, examples of the disclosure are not limited to these types of apertures <NUM> in the backboard <NUM>. A shorter length aperture with no support beam may be provided within the backboard <NUM> to receive the stabilizing members <NUM>.

During use, two stabilizing members <NUM>, such as stabilizing members <NUM> shown in <FIG>, can be inserted into corresponding apertures <NUM> on each side of the backboard <NUM>. The stabilizing members <NUM> may include a wedge shape <NUM> with a protrusion <NUM> structured to be received in the apertures <NUM> of the backboard <NUM>. The stabilizing members <NUM> may be made of any stiff or semi-stiff material, such as, but not limited to, foam or plastic. While <FIG> shows a side view of the stabilizing member <NUM>, as will be understood by one skilled in the art, the stabilizing member <NUM> may have two protrusions <NUM> to accommodate an aperture <NUM> with a support beam in the middle. The wedge-shape of the stabilizing member <NUM> allows the protrusion <NUM> to fit within the aperture such that the wedge portion of the stabilizing member <NUM> is generally vertical relative to the backboard <NUM>. Further, stabilizing members <NUM> may be any shape, such as a flat rectangular or square shape, that can attach to the apertures <NUM>, and is not limited to a wedge-shaped <NUM> stabilizing member <NUM>. As long as the stabilizing members <NUM> include a narrower protrusion <NUM> with a wider body, the stabilizing members <NUM> will be capable of standing up within the apertures <NUM> to laterally stabilize a patient <NUM>.

In some examples, markers <NUM> may be painted or printed on the backboard <NUM> to assist a rescuer in placing the stabilizing members <NUM> in corresponding apertures <NUM> on each distal end of the backboard <NUM>. The markers <NUM> can help a rescuer to ensure the stabilizing members <NUM> are located at the same location on each distal end of the backboard <NUM> to provide balance of the patient on the patient receiving section <NUM> of the backboard <NUM> and to help center a patient <NUM> under a piston, such as piston <NUM>.

For example, if markings <NUM> are provided, the inner most apertures <NUM> may include a single dot marker <NUM> to indicate a very small or narrow patient, while the middle apertures <NUM> includes two dot markers <NUM> and the outside apertures <NUM> include three dot markers <NUM> to show an increase in patient size. This can assist a rescuer to ensure that a patient is located in the middle of the backboard <NUM> for compressions and that there is equal spacing between the stabilizing members <NUM> and the connection rails <NUM>. While markers <NUM> are shown as dots in <FIG>, examples of the disclosure are not limited to dot markers <NUM> and may be any type of marking to indicate the spacing of the stabilizing members <NUM>, such as numbers or words.

<FIG> illustrates another example of a stabilizing member <NUM> according to some examples of the disclosure. Stabilizing member <NUM> can include, similar to stabilizing member <NUM>, a wedge-shape <NUM> and a protrusion <NUM>. Similar to stabilizing member <NUM>, the stabilizing member <NUM> does not have to be wedge-shape, but can be any shaped member with a protrusion <NUM> structured to fit within a corresponding hole or aperture of a backboard. Stabilizing member <NUM>, however, may include a connection rail <NUM> that can attach or connect to a leg of a corresponding compression device.

Stabilizing member <NUM> can fit within the apertures <NUM> of <FIG>, or, in some examples, the apertures <NUM> can be angled within the backboard <NUM> so the stabilizing member can attach to a leg of the compression device. The rail or shaft <NUM> of the stabilizing member <NUM> may be positioned to be above the connection rail <NUM> of the backboard in some examples. In other examples, the stabilizing member <NUM> can be longer so that the rail or shaft <NUM> of the stabilizing member <NUM> extends out past the connection rail <NUM>. Further, although only two apertures are shown in <FIG> in the backboard <NUM>, multiple apertures may be provided. If the stabilizing member <NUM> is connected or coupled with an inner aperture for a smaller patient, the legs of the compression device may connect to the connection rail <NUM> of the backboard rather than the shaft <NUM> of the stabilizing member <NUM>.

<FIG> illustrate another example of a backboard <NUM> according to some examples of the disclosure. In this example, stabilizing members <NUM> are provided directly within the backboard <NUM>. While <FIG> illustrates six stabilizing members <NUM>, three on each distal end of the backboard <NUM>, examples of the disclosure are not limited to this number of stabilizing members <NUM>. Any number of stabilizing members <NUM> may be provided.

Similar to other backboards discussed above, backboard <NUM> includes connection rails <NUM> to connect to legs of a compression device and a patient receiving area <NUM> located in the center of the backboard <NUM>.

Each of the stabilizing members <NUM> may be rotatably connected to the backboard <NUM>. For example, the stabilizing members <NUM> may be rotatably connected to the backboard <NUM> by a hinge <NUM> or any other rotation means. The stabilizing members <NUM> may each have a handle <NUM> either cut into the stabilizing member or some type of pull or strap for a rescuer to grab and rotate the stabilizing member into a vertical position that is generally perpendicular to the surface of the backboard <NUM>. The hinge <NUM> may be a locking hinge that locks the stabilizing member <NUM> into the generally vertical position. Other locking mechanisms may also be provided, such as a clamp. In some examples, no handle is provided, but a rescuer may push on the bottom of the stabilizing member <NUM> to rotate the stabilizing member <NUM> into a generally vertical position. The stabilizing member <NUM> can be locked into the generally vertical position using any known locking mechanism.

Similar to backboard <NUM>, markers <NUM> may be provided to help assist a rescuer in confirming that corresponding stabilizing members <NUM> are lifted on each side of the backboard <NUM>. Markers <NUM> may be any type of marker to designate corresponding stabilizing members <NUM> on each side of the backboard <NUM>.

<FIG> illustrates a perspective view of the backboard <NUM> with two of the stabilizing members <NUM> lifted into the generally vertical position. The stabilizing members <NUM> stabilize a patient between the stabilizing members <NUM> when a compression device is attached to the backboard <NUM> to help center a patient under a piston <NUM> during chest compressions. The stabilizing members <NUM> can prevent the patient from sliding laterally along the backboard <NUM> during operation of the compression device.

In another example, <FIG> illustrates a backboard <NUM> with removable stabilizing members <NUM>. Backboard <NUM> includes a number of features similar to those shown in <FIG> and as such, those features are shown with the same reference numbers are those discussed above. For example, similar to backboard <NUM>, backboard <NUM> can include a number of apertures <NUM> to receive stabilizing members, markers <NUM>, a patient receiving portion <NUM>, and connection rails <NUM>.

<FIG> illustrates the stabilizing member <NUM>. The stabilizing member <NUM> may include one or more protrusions <NUM> that are structured to be accommodated within the apertures <NUM>.

In the example backboard <NUM>, the stabilizing members <NUM> may be stored directly within the backboard <NUM> itself, rather than within a carrying case for the backboard. For example, the stabilizing member <NUM> may fit within an aperture of the backboard. While <FIG> shows the stabilizing members <NUM> stored at the end of the backboard <NUM> near the connection rails <NUM>, the stabilizing members <NUM> may also be stored within the patient receiving portion <NUM> in some examples.

An aperture may be provided within the backboard <NUM> to receive the stabilizing member <NUM>, and one or more grooves <NUM> may be located within the center of the backboard <NUM>, as shown by dashed lines, to receive the protrusions <NUM> when the stabilizing member <NUM> is stored within the backboard <NUM> itself. The stabilizing member <NUM> may include a handle <NUM> to assist with a rescuer pulling the stabilizing member out of the backboard <NUM> and placing into the apertures <NUM> to stabilize the patient.

<FIG> illustrates another example backboard <NUM> according to some examples of the disclosure. Backboard <NUM> includes a patient receiving surface <NUM> and a bottom surface <NUM> opposing the patient receiving surface <NUM>. The backboard <NUM> includes two protrusions <NUM> defining an opening or gap <NUM> to accommodate a leg of a compression member on each distal end of the backboard <NUM>. Each of the protrusions <NUM> include a number of projections <NUM> on the bottom <NUM> of the backboard <NUM>. As will be discussed in more detail below, the projections <NUM> on each protrusion <NUM> is structured to attach to a leg of a compression device, such as leg <NUM> of compression device <NUM> to the backboard. That is, rather than a leg connecting to a connection rail, as discussed above in some examples, the leg of the compression device can connect or attached to the projections <NUM>.

<FIG> illustrates an example bottom portion of a leg <NUM> of a compression device that can attach to the backboard <NUM>. As will be understood by one skilled in the art, the leg <NUM> may be used with the compression device <NUM> illustrated in <FIG>, rather than the leg <NUM> shown in <FIG>.

Leg <NUM> can include a base <NUM> on each side of the leg <NUM>. Each base can include a number of receivers, or protrusions <NUM>. The protrusions <NUM> are spaced apart to accommodate a projection <NUM> of the backboard <NUM>. While a side view of the leg <NUM> is shown, each base <NUM> of each leg includes protrusions <NUM>. The protrusions <NUM> may be different heights or may be the same height.

The projections <NUM> can be received between or around the protrusions <NUM>, to create a hook and receiver connection to attach the baseboard <NUM> to the leg <NUM>, as shown in <FIG> illustrates a cross-section view of the backboard <NUM> connected to the leg <NUM> to illustrate the connection of the backboard <NUM> to the base plate <NUM> by the protrusions <NUM>. Any one of the projections <NUM> of the projection <NUM> may be received between the projections <NUM> and protrusions <NUM> of the leg <NUM>. This can allow the space or width between the legs <NUM> of the back compression device to move closer together or further from each other to accommodate different patient sizes. The different widths of the legs <NUM> may also help stabilize a patient during chest compressions.

In some examples, the projections <NUM> may be spaced such that both of the protrusions <NUM> can fit between two projections <NUM>. A projection <NUM> may fit between the space of the protrusions <NUM>, providing a number of different connection points and variability in the width between the legs <NUM>. That is, the legs <NUM> are able to adjust laterally with respect to the backboard <NUM> to accommodate different patient sizes. When performing compressions with a compression device, the projections <NUM> and the protrusions <NUM> work together to prevent movement of the backboard relative to the legs <NUM> of the compression device.

<FIG> illustrates a distal end of an alternative backboard <NUM>. As will be understood by one skilled in the art, the other distal end of the backboard <NUM> would be identical. The backboard <NUM> includes an opening <NUM> on each side of the backboard to receive a leg of the compression device. The opening <NUM> is defined by the distal end of the backboard <NUM>.

The opening <NUM> can include a number of evenly spaced grooves <NUM>. The grooves <NUM> may be formed by a number of projections with a divot between the projections. The grooves <NUM> are structured to accommodate spring-loaded shafts <NUM> of a leg <NUM>, which is illustrated in <FIG>. While only a single leg <NUM> is shown, the other leg of the compression device would have the same features.

Though grooves <NUM> are shown in the backboard <NUM>, examples of the disclosure are not limited to grooves <NUM> and may be any member than can prevent movement of a leg <NUM>. For example, rather than grooves <NUM>, a number of protrusions could be provided on each side of the opening <NUM>, similar to those discussed above in <FIG>. Further, the grooves <NUM>, or any other means, are mirrored on opposite sides of the opening <NUM>. That is, there is a corresponding groove <NUM> or other means on one side of the opening <NUM> directly opposite the other side of the opening <NUM>.

<FIG> illustrates an example leg <NUM> that may be used with the compression device <NUM> instead of leg <NUM>, for example, to attach the compression device <NUM> to the backboard <NUM>. Further, leg <NUM> is just one example of many type of legs that may be used with the backboard <NUM>. The leg <NUM> can include two opposing spring-loaded shafts <NUM>. Springs (not shown) can be attached to the shafts <NUM> and a release ring <NUM>. When pulling upward on the release ring <NUM>, the shafts <NUM> are retracted into the leg <NUM> to allow the leg <NUM> to enter the opening <NUM>.

The spring-loaded shafts <NUM> are provided on an end <NUM> of the leg <NUM> that is structured to fit within the opening <NUM>. The portion of the leg <NUM> above the end <NUM> is wider than the opening <NUM> so that only the end <NUM> can fit within the opening <NUM>. The shafts <NUM> extend beyond the end <NUM> such that the end <NUM> would not fit within the opening <NUM> unless the shafts <NUM> are retracted. This prevents the leg <NUM> from disconnecting from the backboard <NUM> during use of the compression device.

<FIG> illustrates a bottom perspective view of the leg <NUM> attached to the backboard <NUM> according to some examples of the disclosure. The release ring <NUM> is lifted or pulled to retract the shafts <NUM> into the leg so the leg can be inserted into the opening <NUM>. As can be seen in <FIG>, the lower portion of the leg <NUM> is structured to be just wide enough to fit within the opening <NUM>. Once the leg <NUM> is placed in the opening, the ring <NUM> can be released and the shafts <NUM> can be protrude to engage with the grooves <NUM> of the backboard <NUM>. The leg <NUM> is now connected to the backboard <NUM> and cannot be removed without pulling the release ring <NUM> to retract the shafts <NUM>.

If grooves <NUM> are provided, then the legs <NUM> can move along the grooves <NUM> within the opening <NUM> until at a desired position. The legs <NUM> can be locked to a particular groove <NUM> using any locking means, such as an activator. Alternatively, the grooves <NUM> may be deep enough that the legs must be positioned at their desired location with the shafts <NUM> retracted, and then once the shaft <NUM> is within a particular groove or protrusion, the leg <NUM> is immobile. The opening <NUM>, grooves <NUM>, and shafts <NUM> all work in conjunction to allow the legs <NUM> to laterally slide relative to the backboard <NUM> to accommodate different patient widths and chest heights and to set the legs at the most desirable location for the compression device and the patient.

The edges of the legs <NUM> around the shafts <NUM> may be a replaceable rubber part that can seal the shaft bearings from intakes of liquid or dust during use or cleaning of the legs <NUM>.

Additionally or alternatively to the example backboards discussed above, in some examples, cushions or support from a carrying case for the compression device may be used to laterally support a patient on the backboard. The cushions may be used with any of the above discussed backboards, or with a backboard that is not adjustable, such as backboard <NUM> discussed above.

<FIG> illustrates an example of an open carrying case <NUM> for a chest compression unit. The carrying case <NUM> may include cushions <NUM> for carrying components of the compression unit, such as a suction cup <NUM> and/or a spare battery <NUM>. The cushions <NUM> may be connected by an elongated flexible portions <NUM> that can be folded, as seen in <FIG>. The cushions <NUM> may be made of any suitable semi-stiff material, such as plastic, silicone, or foam, that can return to its original shape after use with a patient. For example, a patient may be wider than the elongated portion <NUM> and may lay on the edges of the cushions <NUM> in some situations. The cushions <NUM> can be hollow or may have a bottom portion that can provide rigidity.

During use of the compression device, the cushions <NUM>, connected by the elongated portion <NUM>, can be removed from the carrying case <NUM> and placed on a backboard <NUM>, as shown in <FIG>. The cushions <NUM> can provide lateral support to a smaller patient to prevent the patient from sliding. Even if a patient is laying on or compressing the edges of the cushions <NUM>, the cushions <NUM> can still prevent the patient from sliding laterally relative to the backboard and can help ensure adequate positioning of the piston <NUM>. In configurations, the suction cup <NUM> may be used as a support, for example, when positioned as illustrated in <FIG>.

The cushions <NUM> and elongated portion <NUM> may include a non-slip material and be placed directly on the backboard <NUM>, or the cushions <NUM> may attach to the backboard and/or legs <NUM> via straps, hook and loop fasteners, hooks, or any other means, to help prevent the patient and cushions from sliding during use of the compression device.

In some examples, the elongated portion <NUM> may be stiff or generally inflexible. In such examples, the cushions may fold relative to the elongated portion <NUM> so that the cushions <NUM> rest on top of the elongated portion when in the carrying case <NUM> or may be folded out during use on the backboard <NUM> with the elongated portions <NUM> spanning between the two cushions <NUM>.

In another example, the cushions <NUM> may attach to a protrusion (not shown) within the carrying case by a holder, as shown in <FIG>, which may be the same width and thickness as a leg <NUM> of the compression device <NUM>. The holder can attach to the leg <NUM> of the compression device to provide lateral support for a patient.

As another example of a carrying case cushion, <FIG> illustrates a cushion <NUM> that is the general shape of the backboard <NUM>. The cushion <NUM> in <FIG> is illustrated as slightly larger than the backboard, but could also be slightly smaller than the backboard in some examples. In configurations, the cushion may be, for example, inflatable, allowing the user to inflate the cushion to a higher or lower level to accommodate the patient's size. During transport of the chest compression device <NUM>, the cushion <NUM> can be placed on top of the backboard <NUM> and have an opening or other cut-out <NUM> to accommodate the upper portion of the chest compression device <NUM>, including the support structure <NUM> and the central unit <NUM>. For example, the legs <NUM> may be folded by hinges <NUM> relative to the central unit <NUM> and the support structure <NUM>. The compression device <NUM> may be placed within the opening <NUM> of the cushion with the folded legs <NUM>. The backboard <NUM>, cushion <NUM>, and chest compression device <NUM> can then be placed inside a carrying case.

During operation of the chest compression device <NUM>, as shown in <FIG>, the cushion <NUM> can remain on the upper surface of the backboard <NUM> and a smaller patient <NUM> can be placed within the opening <NUM> to provide lateral support during compressions. The cushion may be made of anti-slip material or may include a fastener, such as, but not limited to, a strap, hook and loop fastener, clips, etc., to attach the cushion to the backboard <NUM> and/or the legs <NUM>. The cushion <NUM> may be positioned differently than what is illustrated.

<FIG> is a perspective view of a supportive structure <NUM>, according to examples in the disclosure outside the scope of protection. As illustrated in <FIG>, the supportive structure <NUM> may include a middle section <NUM>, a first lateral section <NUM> on a first end of the middle section <NUM>, and a second lateral section <NUM> on a second end of the middle section <NUM>. Each of the middle section <NUM>, the first lateral section <NUM>, and the second lateral section <NUM> are substantially rigid. As used in this context, "substantially rigid" means largely or essentially stiff and not pliant, without requiring perfect inflexibility. A first junction <NUM> between the middle section <NUM> and the first lateral section <NUM> is flexible to permit the first lateral section <NUM> to pivot relative to the middle section <NUM>. A second junction <NUM> between the middle section <NUM> and the second lateral section <NUM> is flexible to permit the second lateral section <NUM> to pivot relative to the middle section <NUM>.

<FIG> are front views of the supportive structure <NUM> of <FIG> on a backboard <NUM>, according to examples in the disclosure. <FIG> illustrate the lateral sections of the supportive structure <NUM> in three different positions. <FIG> is a top view of the supportive structure <NUM> and backboard <NUM> of <FIG>, but without showing the patient <NUM>.

As illustrated in <FIG>, the backboard <NUM> includes an elongated portion <NUM> that extends along a longitudinal axis. The longitudinal axis runs left to right from the viewpoint illustrated in <FIG>. The elongated portion <NUM> has a first distal end and a second distal end. There are a plurality of apertures <NUM> within the elongated portion <NUM>. The elongated portion <NUM> and the plurality of apertures may be, for example, the backboard <NUM> and apertures <NUM> depicted in <FIG> and described above for that drawing. The supportive structure <NUM> has at least two protrusions <NUM> that are structured to be received in the plurality of apertures <NUM>.

The supportive structure <NUM> having a longitudinal axis, which runs left to right from the viewpoint illustrated in <FIG>. The longitudinal axis of the supportive structure <NUM> is substantially parallel to the axis of the elongated portion <NUM>. As used in this context, "substantially parallel" means largely or essentially equidistant at all points, without requiring perfect parallelism. The supportive structure <NUM> is configured to support a patient <NUM> above the elongated portion <NUM>. Accordingly, the supportive structure <NUM> may be particularly useful for smaller patient <NUM>s, including children by, for example, positioning the patient <NUM> closer to the chest compression mechanism when the supportive structure <NUM> is used with a mechanical CPR device.

As best illustrated in <FIG>, the elongated portion <NUM> has a width <NUM>, the width being substantially perpendicular to the axis of the elongated portion <NUM>, in which the supportive structure <NUM> has a width <NUM>. As used in this context, "substantially perpendicular" means largely or essentially at right angles, without requiring perfect perpendicularity. In configurations, the width <NUM> of the supportive structure <NUM> half or less the width <NUM> of the elongated portion <NUM> so that the supportive structure <NUM> may be positioned in different locations on the elongated portion <NUM>, such as the positions labeled 4002A and 4002B in <FIG>.

Any of the configurations discussed above or illustrated in any of the drawings may include one or more straps connected to the backboard. The straps may assist to secure the patient, particularly a small patient such as a child, to the backboard and to help properly position the patient on the backboard. The straps may be adjustable, both in terms of length and the attachment position on the backboard. The straps may be configured to secure any or all of the patient's head, torso, arms, or wrists. In configurations, the straps may be attached instead or also to the legs <NUM> of the CPR device <NUM>. Additional fixation or positioning methods or features may also be used.

Instead of or in addition to any of the configurations discussed above, a high-friction rubber bag containing a material that makes the bag shape change may be used between the patient and the back plate to help properly position the patient. The material in the sealed, high-friction rubber bag may be, for example, flour or other materials with similar function, meaning the material in the bag may be adjusted, or moved, to adapt to the patient's size and shape.

For purposes of this description, certain aspects, advantages, and novel features of the examples of this disclosure are described herein. Features, integers, characteristics, compounds, chemical moieties or groups described in conjunction with a particular aspect, configuration, or example of the disclosure are to be understood to be applicable to any other aspect, configuration or example described herein unless incompatible therewith. The disclosure is not restricted to the details of any foregoing examples. The disclosure extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Although the operations of some of the disclosed methods are described in a particular, sequential order for convenient presentation, it should be understood that this manner of description encompasses rearrangement, unless a particular ordering is required by specific language.

As used herein, the terms "a", "an", and "at least one" encompass one or more of the specified element. That is, if two of a particular element are present, one of these elements is also present and thus "an" element is present. The terms "a plurality of" and "plural" mean two or more of the specified element. "Generally" or "approximately" as used herein means a variance of <NUM>%.

As used herein, the term "and/or" used between the last two of a list of elements means any one or more of the listed elements. For example, the phrase "A, B, and/or C" means "A," "B," "C," "A and B," "A and C," "B and C," or "A, B, and C.

As used herein, the term "coupled" generally means physically coupled or linked and does not exclude the presence of intermediate elements between the coupled items absent specific contrary language.

Additionally, this written description makes reference to particular features. It is to be understood that the disclosure in this specification includes all possible combinations of those particular features. Where a particular feature is disclosed in the context of a particular aspect or example, that feature can also be used, to the extent possible, in the context of other aspects and examples.

Also, when reference is made in this application to a method having two or more defined steps or operations, the defined steps or operations can be carried out in any order or simultaneously, unless the context excludes those possibilities.

Claim 1:
A backboard (<NUM>) for a chest compression device (<NUM>), the backboard comprising:
a first side (<NUM>) structured to accommodate an adult-sized patient at a first distance from a support surface when attached to the chest compression device in a first orientation; and
a second side (<NUM>) structured to accommodate a pediatric-sized patient at a second distance from the support surface when attached to the chest compression device in a second orientation, the second distance being greater than the first distance;
wherein the first orientation corresponds to the second side interfacing with the support surface, and the second orientation corresponds to the first side interfacing with the support surface.