Abstract: The present disclosure relates to an operating table, the operating table comprising a table top, a table top support and a column with a column head, wherein the sealing device is bellows assembled below the column head, or an adhesive in a hole and/or window on the holder of the cable, or a sealing gasket between the receiver and the column head, or a shield sealingly attached to the column head below the gear. The present disclosure further relates to control equipment, a lifting device, an intelligent charger, a column guide system for an operating table, as well as an operating table including the same.

Abstract: A bed and frame assembly includes a box that is positionable on a horizontal support surface. A pair of tracks is each of the tracks is removably disposed on the box. A lid is slidably disposed on the box for supporting a mattress. The lid is positionable in a first position to close the box or a second position to facilitate sheets on the mattress to be changed. A plurality of roller units is each disposed on the lid and rollably engages a respective one of the tracks to facilitate the lid to be rolled between the first position and the second position. A sliding unit is integrated into the box and the sliding unit is in mechanical communication with the lid. The sliding unit is actuatable in a closing condition for sliding the lid into the first position and the sliding unit is actuatable in an opening condition for sliding the lid into the second position.

Abstract: A surgical table comprises a base, components, and a controller. The controller is configured to store a geometric collision model including object model datasets of the components, of the base, and of a supporting surface and motion compute datasets of the base and of the components. The controller is configured to execute an anti-collision algorithm defining ranges of motion of the base and of the components based on a specific geometric collision model, and to control a drive to move the base and the components within the defined ranges of motion such that a collision is prevented. The controller is configured to store a defined initial geometric collision model of a configuration and to adapt the initial geometric collision model to an actual geometric collision model according to an actual configuration.

Abstract: A handset for controlling a device having a plurality of movable elements, the handset having a housing, a display on a front face of the housing, the display being divided into a plurality of zones, each zone including at least one icon switch, each icon switch being aligned with a respective associated icon, wherein each icon identifies a respective element or group of elements of a device to be controlled by the respective icon switch, and a plurality of physical switches on the front face, each physical switch being associated with a respective zone, and wherein each physical switch is configured to control movement of the element or elements shown by the icon or icons in the respective zone, and a control mechanism within the housing which is connected to the plurality of icon switches and the plurality of physical switches, the control mechanism being arranged to generate an output control signal for transmission to the device in response to an input command at the plurality of icon switches and the plu

Abstract: A user module for a patient support apparatus is provided. The user module has a user interface operably coupled thereto. The user interface includes an input device and an output device. The output device includes a visual display including textual and non-textual elements. The non-textual elements include enhanced, graphical, and animated portions relating to one or more operational features of the patient support or to a person positionable on the patient support. The input device includes one or more touch sensors corresponding to defined regions of the visual display.

Abstract: A patient support includes a height adjustable patient support deck, at least one guard structure mounted for movement relative to the patient support deck, and a latch operable to lock the position of the guard structure in a raised position. The patient support further includes a CPR release operable to lower the head deck section of the patient support deck to place the patient support in an emergency state and further operable to release the latch to allow the guard rail structure to lower or be lowered from the raised position.

Abstract: Disclosed is a payload lifting device capable of stably lifting a payload using one lift-driving unit. In the payload lifting device including a lift-driving portion configured to vertically lift a payload, the lift-driving portion includes lift-driving units configured to generate a driving force for vertically lifting the payload, a first power transmission portion including first power transmission members which vary in vertical positions and apply a vertically lifting force to one side of a bottom of the payload when a first rotational shaft rotated by the driving force of the lift-driving units rotates, and a second power transmission portion including second power transmission members which vary in vertical positions and apply a vertical lifting force to the other side of the bottom of the payload when a second rotational shaft rotated by the driving force of the lift-driving units rotates.

Abstract: A physiological patient monitoring system with a patient-facing interface is disclosed. The patient interface can be used by the patient to communicate with hospital staff without actually requesting attendance and can request attendance for specific purposes. The patient interface may also track patient treatment and inform patients of the details of their treatments.

Abstract: A foundation for a bed system can include an actuator, a deck mechanism operably related to the actuator so as to be actuated between raised and lowered positions in response to actuation by the actuator, and a controller operably connected to the actuator and configured to drive the actuator to actuate the deck mechanism between a lower position and an upper position. The deck mechanism can be configured to move to a service position that is further than the upper position. The deck mechanism can expose and permit access to a serviceable component when the deck mechanism is in the service position. A method of using a foundation having a service position is also described.

Abstract: An embodiment of the invention is a terminal device controlling a body support apparatus capable of a first operation and a second operation; the terminal device includes a displayer and a controller; the displayer displays an operator controlling an operation of the body support apparatus; the controller switches between a first display format and a second display format based on an instruction from an outside; the first display format displays a first operator and a second operator in the displayer; the first operator controls the first operation; the second operator controls the second operation; and the second display format displays one of the first operator or the second operator in the displayer.

Abstract: A transmission device of a hospital bed contains: a main motor, a connection rod unit, a gear unit, and a driver. The gear unit includes a first coupling post, a second coupling post, a first gear, a second gear, a third gear, a third coupling post, and a fourth gear. The driver includes a first case, a second case, a first driving motor, a second driving motor, and a power cable. The first case has a first chamber, a third chamber configured to accommodate the first driving motor, and a fourth chamber configured to accommodate the second driving motor. The second case has a second chamber. The first coupling post, the second coupling post, the first gear, the second gear and the third gear are accommodated in the first chamber. The third coupling post and the fourth gear are accommodated in the second chamber.

Abstract: An adjustable bed includes a head frame assembly, a first slidable assembly having a slidable assembly base and slidable assembly sides slidable within lower C steel brackets; head lift arm bracket assemblies pivotally connected to the slidable assembly sides; and a head lift platform mounted on the head lift arm bracket assemblies, an upper seat platform mounted on the first slidable assembly, and a lower seat platform movably attached onto the higher C steel bracket; a second slidable assembly with a spacing bracket having a guiding slot mounted on the slidable assembly base and the fixing bracket being mounted on the lower seat platform, and the connecting bolt mounted on the fixing bracket and received in the guiding slot; and a head lift motor secured to the head frame assembly for operably driving the head lift arm bracket assemblies in head lift forward or backward direction.

Abstract: A bed system includes: an imaging device; a bed on which the imaging device is to be installed; and a controller configured to process an image acquired by the imaging device to predict a possibility of overturning of a user, in which, when it is determined that a state of the user is a first state, the controller predicts the possibility of overturning of the user based on a first parameter, when it is determined that the state of the user is a second state, the controller predicts the possibility of overturning of the user based on a second parameter, the first state is a state of the user different from the second state, and the first parameter is different from the second parameter.

Abstract: A patient transport apparatus transports a patient over a surface. The patient transport apparatus comprises a support structure comprising a base, a patient support surface, and a reference sensor arranged to sense inclination of the support structure. A drive system is coupled to the support structure and operable to propel the patient transport apparatus. A handle assembly is operable by a user to control operation of the drive system. The handle assembly comprises a handle movable relative to the base and a position sensor arranged to sense positioning of the handle. A controller is coupled to the reference sensor and the position sensor, and is adapted to control the drive system in response to signals received from the reference sensor and the position sensor.

Abstract: An adjustable table column (1) for an operating table, comprising a column base (2) for placing the table column (1) on a floor, a height-adjustable column shaft (3) with a stationary column shaft base (24), and a column shaft stem (40) that can be moved up and down relative to the column shaft base, a connection unit (10) for connecting a patient support surface to the table column (1), wherein the connection unit (10) is pivotable in relation to the column shaft stem (40), and a cable routing device (4) for carrying at least one power and/or data cable (5) along the column shaft stem (40) during its up and down movement, wherein the cable routing device (4) comprises an articulated push rod (11) which can transmit pushing and pulling forces.

Abstract: A patient support includes a height adjustable patient support deck, at least one guard structure mounted relative to the patient support deck along a side of the patient support, with the guard structure movable both vertically and laterally along the side of the patient support, and the guard structure positionable beneath at least the patient support deck. The patient support further includes a control system configured to determine whether the guard structure is located beneath the patient support deck and to enable or disable a function of the patient support and/or to adjust a parameter of the patient support when the guard structure is located beneath the patient support deck.

Abstract: A bracket is provided for an adjustable bed base that distributes the load of an actuator across a moveable panel of the adjustable bed. The bracket is coupled to a moveable panel of the adjustable bed, and has a width that is greater than one-third the width of the moveable panel.

Abstract: A bed system includes a fixed frame, a movable frame, and first and second end boards disposed at the head and foot ends of the fixed frame, respectively. The system may be assembled and/or configured such that: a first electric or manual actuator is coupled between the fixed frame assembly and a first linkage assembly of the movable frame assembly for powered or manual movement of a first movable section of the movable frame assembly; a second electric or manual actuator is coupled between the fixed frame assembly and a second linkage assembly for powered or manual movement of a second movable section of the movable frame assembly; and/or a third electric or manual actuator is coupled between the first and second end boards for powered or manual height adjustment of the head and foot ends of the fixed frame assembly.

Abstract: An adjustable base is provided that includes a fixed frame and an articulating frame connected to the fixed frame. The articulating frame includes an upper body frame pivotally connected to the upper section of the fixed frame, a seat frame pivotally connected to the upper body frame and movable along a central section of the fixed frame, and a leg frame pivotally connected to the fixed frame. An actuator is further included and has a first end connected to the seat frame adjacent to the leg frame and a second end that is connected to a linkage attached to the articulating frame. Upon activation of the actuator, the upper body frame is articulated upward and the seat frame moves linearly along the central section of the fixed frame toward the upper section of the fixed frame. Systems and methods for controlling an adjustable base assembly are further provided.

Abstract: An electric bed includes a base, a back frame, and a butt frame. The rear end of the back frame is attached to the base, and the back frame is swingable relative to the base by the driving of a first actuator. The butt frame is located in back of the back frame. The rear end of the butt frame is attached to the base, and the butt frame is swingable relative to the base by the driving of a second actuator. As a result, the electric bed of the invention enables the user to change the posture thereof between sitting and flat lying postures through the swinging of the back frame, and effectively supports the waist of the user through the swinging of the butt frame, so that the user can maintain the posture thereof conforming to ergonomics, thereby prevented from hurt on the waist.

Abstract: A bed system includes a fixed frame, a movable frame, and first and second end boards disposed at the head and foot ends of the fixed frame, respectively. The system may be assembled and/or configured such that: a first electric or manual actuator is coupled between the fixed frame assembly and a first linkage assembly of the movable frame assembly for powered or manual movement of a first movable section of the movable frame assembly; a second electric or manual actuator is coupled between the fixed frame assembly and a second linkage assembly for powered or manual movement of a second movable section of the movable frame assembly; and/or a third electric or manual actuator is coupled between the first and second end boards for powered or manual height adjustment of the head and foot ends of the fixed frame assembly.

Abstract: An adjustable bed foundation includes an adjustable frame and at least one height adjuster configured to raise and lower a portion of the adjustable frame. The adjustable frame defines a support surface, a bottom surface opposite the support surface, and a plurality of lateral side surfaces intersecting each of the support surface and the bottom surface. A fabric at least partially covers the plurality of lateral side surfaces and is secured to a material covering the support surface. A massage device is disposed within the adjustable frame and configured to impart vibration to a mattress disposed on the adjustable frame. The massage device is secured to the adjustable frame by a flexible fastener, and a gap between the flexible fastener and the support surface is between about 2 mm and about 10 mm. Related methods are also disclosed.

Abstract: According to one embodiment, a support system includes a server and a terminal device capable of communicating with the server. The terminal device includes an input circuit configured to receive a first signal which indicates that a user is awake, and a controller coupled to the input circuit and configured to determine to provide support to the user based on the first signal.

Abstract: The present invention provides systems, methods, and articles for stress reduction and sleep promotion. A stress reduction and sleep promotion system includes at least one remote device and an article for temperature conditioning a surface. The stress reduction and sleep promotion system includes at least one body sensor, at least one remote server, and/or a pulsed electromagnetic frequency device in other embodiments.

Abstract: Dynamic support surface technologies configure a person support surface in various ways, including configurations in which the person support surface at least temporarily assumes an apnea therapy position, such as a progressive lateral tilt or a ramp-like position.

Abstract: An adjustable bed includes: a head frame assembly; a foot frame assembly; a knockdown connecting bracket; a slidable assembly having a pair of slidable assembly sides slidable within a pair of lower C steel brackets in a slidable assembly upward direction or a slidable assembly downward direction; a plurality of slidable assembly angle steels; a pair of head lift arm bracket assemblies; a second head tilt angle bracket; a head tilt platform; a head lift platform; a lumbar lift bracket assembly; an upper seat platform; a support platform; a lower seat platform; a head lift motor, secured to the head frame assembly for driving the pair of head lift arm bracket assemblies in a head lift forward direction or a head lift backward direction; and a head support tube, having an upper end pivotally connected to a L bracket and a lower end connected to the head lift platform.

Abstract: A patient support device includes an alternate support top, a head support unit partially supporting the alternate support top, a foot support unit longitudinally spaced from the head support unit and an adaptor associated with the foot support unit. The adaptor is securable to the foot support unit so that the adaptor and foot support unit cooperate to partially support the alternate support top so that the alternate support top extends footwardly beyond the foot support unit. The roles of the head and foot support units may be reversed. A related patient support system includes a baseline set of support tops and a set of alternate support tops.

Abstract: An operating table control apparatus is disclosed. The operating table control apparatus has a control device, a plurality of operating table components, and an operating table drive. The plurality of operating table components are actuatable from a first position to a second position via the operating table drive. The second position is a preset position that is stored by the operating table control apparatus. The second position is assigned to a control element of the control device.

Abstract: An adjusting device for positioning support surface segments of an operating table is disclosed and may have a four-bar linkage, in which a base element of the operating table and a support surface segment of a patient bearing surface of the operating table are connected. The four-bar linkage may have a first guide bar and a second guide bar. The support surface segment may be connected to the four-bar linkage so that it can pivot about the second pivot.

Abstract: An electromotive dual drive for adjustment of two different furniture parts of a piece of furniture includes a housing having opposite end sections. Each end section is formed with a shaft holder for receiving a pivot shaft of the piece of furniture. Two drive units are arranged one behind another in the housing in a longitudinal direction, with each drive unit including a drive motor, a transmission, and a spindle drive including a spindle which acts on an output member operably connected to a respective one of the pivot shafts. The spindles and/or the output members of the drive units are sized of different lengths, and the drive motor of one of the drive units and the drive motor of the other one of the drive units are spaced from the shaft holders, respectively, at different distances.

Abstract: A drive for adjusting parts of seating and lying furniture, wherein a first furniture component is mounted moveably relative to a second furniture component, includes at least one spindle rotatable by an electric motor. An adjusting nut is carried on the spindle, is guided non-rotatably in a guide tube, and is drivable by rotation of the spindle in the axial direction of the guide tube. A lift tube is operatively connected to the adjusting nut. A first pivotal connecting device is arranged at the free end of the lift tube and may be pivotally connected to the first furniture component by way of a first hinge connection. A second pivotal connecting device is provided at the opposite end of the drive and can be fixed by way of a second hinge connection to a stationary frame portion or to a second furniture component.

Abstract: A patient support apparatus, such as a hospital bed, includes an alert light assembly or an alert light module having separate zones that are individually illuminated to convey information regarding respective alert conditions. The zones each have indicia related to a particular condition of the patient support apparatus. The illuminated zones are each sufficiently large so as to be seen from afar, such as on the order of ten feet or more. Alternatively or additionally, a GUI of the patient support apparatus displays alert indicia as part of a screen saver. Further alternatively or additionally, the patient support apparatus illuminates an alert light in a manner indicating an optimal time for taking a patient's vital signs.

Abstract: A person support apparatus includes a base, a controller, and a barrier having at least one electrical device. The base includes mounting structures for releasably mounting the barrier to the base. A first electrical connector is in communication with the at least one electrical device and mounted to the barrier. A second electrical connector is in communication with the controller and mounted at one of the mounting structures for connection with the first electrical connector when the barrier is mounted to the base at the mounting structures.

Abstract: An adjustable slatted bed base with an outer frame and a lying surface with at least two sections, which is arranged on the outer frame, wherein at least one section is formed as a pivotable section which is pivotable relative to the outer frame, from a flat position into at least one angled position, by an adjusting unit, and the pivotable section has a support device for providing support relative to the outer frame. In order to provide an adjustable slatted bed base, which has a pivotable section which allows easy access to an area beneath the slatted bed base in any operating position, and can be returned to an operational condition quickly and easily, the support device is formed such that it can be disengaged from the outer frame in order to adjust the pivotable section from any set position into a folded-back position, and, when pivoting back into the set position, automatically engages with the outer frame in a supportive manner.

Abstract: A system for monitoring and private assistance to people includes sensors that detect descriptive parameters of environmental conditions, and sensors and/or devices that monitor a person's position and, optionally, her physiological parameters. In particular, the system includes sensors and/or devices that monitor a person's position at the topological level and generate tracking signals in time and within a digital topological model of the environment; sensors that monitor posture and/or its variations in time and that provide status signals corresponding to predetermined postures and/or signals, indicating posture variations in time, which are processed by a logic control unit and software that evaluates position and posture and its variation in time and that classifies the signals according to predetermined categories of motor and/or postural activities, and that performs a comparison between detected parameters and predefined patterns of execution.

Abstract: An actuator for use in effecting movement of a movable member with respect to a first member of a patient support apparatus. A motor is provided for generating rotational torque. A carrier is adapted to be secured to the first member. An input member is coupled to the motor for concurrent rotation. An output member is adapted to be coupled to the movable member. A reduction geartrain is supported between the input member and the output member. A clutch assembly is disposed in torque-translating relationship between the reduction geartrain and the output member and moves between: an engaged configuration wherein torque from the motor is translated across the reduction geartrain to move the movable member with respect to the first member, and a disengaged configuration wherein torque is at least partially interrupted across the reduction geartrain to allow movement of the movable member independent of rotation of the motor.

Abstract: An electronically controlled slat bed includes a bed frame; slats together at least partially forming a base for a sleeping surface; struts coupled to the slats, and each strut coupled to said bed frame; jackscrews, each coupled to at least one strut to adjust the coupled strut; flexible apparatuses coupled to one of said jackscrews; a gantry coupled to said bed frame, the gantry having an electric motor; and a sensor; the motor is to engage and rotate the jackscrews; and said sensor is to provide a measurement of a deflection of the flexible apparatuses; and an electronic controller, having an input to receive signals from the sensor; and one or more outputs to control said electric motor; said electronic controller performs computations at least partially responsive to said measurement of the deflection of said flexible apparatuses and modifies the shape of said base for the sleeping surface by rotating one or more of the plurality of jackscrews; and the deflection of one of the flexible apparatuses is resp

Abstract: A rocking bed foundation includes an upper frame supported on rollers over a lower frame such that the upper frame can support a mattress for transverse reciprocal movement under the influence of a driver mounted within the foundation and further such that the upper frame can be locked to prevent movement when the driver is disengaged.

Abstract: Adjustable mattress foundations generally include a mattress support surface including a head and back section hingedly connected to an intermediate seat section at one end and a leg and foot section hingedly connected to the intermediate seat section at another end. The intermediate seat section includes spaced apart upper and lower panels, wherein the lower panel is hingedly connected to the head and back section and slideably engaged with side frame members of the foundation, and wherein the upper panel is stationary and hingedly connected to the leg and foot section. A linear actuator is operatively coupled to a linkage assembly to independently effect inclination or declination of the head and back section relative to the intermediate seat section and is further operative to effect an increase or decrease in a length of the intermediate seat section by movement of the lower panel relative to the upper panel.

Abstract: An articulating bed incorporates a frame having side frame members with a first fixed channel extending laterally between the frame side members and a second fixed channel extending laterally between the frame side members. A first rotatable channel open toward a head of the bed is engaged to the first fixed channel with first hinges. An upper body support panel is removably engaged in the first rotatable channel and an upper body panel support frame extends from the first rotatable channel coplanar with a lower flange to support the upper body panel. A second rotatable channel open toward the foot of the bed is engaged to the second fixed channel with second hinges. A thigh support panel is removably engaged in the second rotatable channel and a thigh panel support frame extends from the second rotatable channel coplanar with a lower flange of the second rotatable channel to support the thigh panel. A seat panel is removably engaged between the first fixed channel and second fixed channel.

Abstract: Linear dual actuator for lying or sitting furniture having at least two sections (2,3), which with one end is rotatably embedded in the article of furniture and where each section (2,3) with an arm (5,7) secured to a pivot shaft (4,6) can be adjusted by means of the linear dual actuator. The dual actuator comprises a housing (8) with a drive at each end, which comprises an electric motor (11), which through a transmission (12) is in driving connection with a spindle (13). On the spindle (13) is arranged an activation element (14) with a spindle nut in engagement with the spindle (13), where the activation element (14) can be brought into engagement with the arm (5,7) for adjusting the sections (2,3). In case of power failure there is the problem that the back rest and leg rest section cannot be lowered to a plane level, which can make the bed uncomfortable or completely impossible to sleep in.

Abstract: An electric bed includes a basic unit and a lift unit. The basic unit includes a base, a sliding frame supported on the base, a backrest frame pivotally connected to the sliding frame, a headrest frame pivotally connected to the backrest frame, and a restraint including an end pivotally connected to the base and another end pivotally connected to the backrest frame. The backrest frame includes a lug that includes a slot. The lift unit includes a power element pivotally connected to the sliding frame, a rod operatively connected to the power element, a backrest driver pivotally connected to the rod, a headrest driver pivotally connected to the backrest driver, a backrest lever for pivotally connecting the backrest driver to the backrest frame, a roller supported on the backrest lever, and a threaded bolt inserted in the backrest driver and the slot of the lug of the backrest frame.

Abstract: An electric bed includes a basic unit and a lift unit. The basic unit includes a base, a sliding frame, an upper leg-rest frame, a lower leg-rest frame and a crankshaft. The sliding frame is supported on the base. The upper leg-rest frame is pivotally connected to the sliding frame. The lower leg-rest frame is pivotally connected to the upper leg-rest frame, and formed with at least one lug that includes a slot. The crankshaft includes a first crank formed thereon, a second crank formed thereon, an axle inserted in the first crank and the slot, and a caster supported on the axle. The lift unit includes a power element and a rod. The power element is pivotally connected to the sliding frame. The rod includes an end operatively connected to the power element and another end pivotally connected to the second crank.

Abstract: Pertaining to hospital bed, development provides comfortable lavatory services to bedridden patients with mobility difficulties. The novelty introduced here is integration of a hospital bed with a bed-level sliding disposable pan at midsection of the bed to allow patients who endure immobility to perform in-bed toileting with no physical pressure and less psychological challenges while remaining clean and sanitized. This invention would best be useful for hospitals, home health care or other health care facilities and settings.

Abstract: The present invention relates to a piece of furniture comprising at least one adjustable use portion, in particular an office chair having an adjustable seat and/or an adjustable backrest. The present invention further relates to an adjusting assembly that can be used, for example, for a piece of furniture of said type.

Abstract: A hospital bed includes a base, a lifting mechanism, a rotating frame configured to rotate horizontally relative to the base, and a patient support surface pivotally secured to the rotating frame. The patient support surface includes a back section, a seat section, and foot section that articulate relative to each other. The patient support surface translates from a bed configuration to a side-egress chair or stand assist configuration. The foot section includes a plurality of panels configured to move relative to each other in substantially parallel overlapping planes between an extended configuration and a retracted configuration when the patient support surface is in a chair or stand assist configuration. The foot section contacts a floor which causes the plurality of panels to move to the retracted configuration. Biasing members urge the plurality of panels to the extended configuration when the foot section no longer contacts the floor.

Abstract: Patient-support systems and apparatuses for supporting patients, including for example hospital beds.

Abstract: Linear actuator, where a reversible electric motor (20) through a transmission (21) drives a non-self-locking spindle (22), by means of which an adjustment element (24) secured against rotation can be moved axially for adjusting an element connected thereto such as a backrest section in a bed. The actuator further comprises a quick release (27) for disengagement of the adjustment element (24) from the electric motor (20) and the part of the transmission (21) extending from the electric motor (20) to the quick release (27), such that the spindle (22) is rotated under the load on the adjustment element (24). Further, the actuator comprises brake means for controlling the speed of the adjustment element (24), when the quick release (27) is activated.

Abstract: A device for supporting a patient to allow an exam to be performed on the patient's breast, including a supporting table which has a longitudinal axis of extension and on which the patient can lie in a reclining position; the supporting table is provided, in proximity to one end of it, with a through hole for receiving the breast to be examined; a mounting frame for mounting the supporting table and equipped with at least one actuator for adjusting the supporting table in height; the supporting table is divided into a first portion and second portion along an axis; the first portion is smaller in extension along the longitudinal axis than the second portion and is provided with the through hole; the two portions are movably connected to each other.

Abstract: A sofa waist propping device includes a frame and a waist adjusting mechanism, the frame being fixed on a sofa or a seat, the waist adjusting mechanism comprising a backrest and a first driving member rotatably connected to the frame respectively, the first driving member being rotatably connected to the backrest and driving the backrest to rotate around the frame. Since the first driving member is rotatably connected to the backrest and drives the backrest to rotate around a fixing member, the position of the backrest is adjusted, with a structure simple and stable and comfortableness increased.