Autonomous patient transport bed

Abstract

The present invention relates to an autonomous patient transport bed. More specifically, the autonomous patient transport bed can be provided, the bed comprising: an autonomous patient transport bed having an autonomous travel unit; and a central control unit which remotely controls the autonomous patient transport bed to move along an autonomous travel route, and which is linked to and controls an elevator on the autonomous travel route, wherein the autonomous patient transport bed includes: a bed body; the autonomous travel unit formed at the lower portion of the bed body; and a cap driving unit operated to unfold a cap in the upward direction from the side edges of the bed body such that the upper body of a patient is protected during transport.

Description

autonomous patient transfer bed

[0001] The present invention relates to an autonomous patient transfer bed, and more specifically, to an autonomous patient transfer bed in which a cap drive unit is formed such that the cap unfolds and operates from the side edge of the bed body in an upward direction, thereby covering the upper body of the patient during transfer.

[0002]

[0003] Currently, when transferring patients within a hospital—for example, from a ward to a destination such as an examination room or operating room—personnel referred to as transport personnel are assigned to the transfer. The assigned transport personnel arrive at the patient's location, verify the patient's identity, escort the transport cart carrying the patient to the destination, and hand it over there.

[0004] However, issues such as a shortage of transport personnel and limitations in staffing and management are causing patient transport to become impossible or delayed, and these problems can lead to serious consequences, particularly in the case of emergency transports. Furthermore, from the patient's perspective, satisfaction with hospital services may decrease, as they may have to wait a considerable amount of time for transport personnel while seated in a transport cart.

[0005] Meanwhile, in hospitals, particularly tertiary hospitals such as university hospitals, the waiting time for elevators and the time it takes for elevators to reach the destination floor are considerable due to the large number of patients, guardians, and visitors. This congested situation causes delays in patient transport, leading to emergency situations.

[0006]

[0007] The technical problem that the present invention aims to solve is to provide an autonomous patient transport bed that prevents impact from the external environment and ensures psychological stability and privacy protection for the patient by forming a cap drive unit that operates by unfolding the cap upward from the side edge of the bed body so that the upper half of the patient is covered during transport.

[0008] Another objective of the present invention is to provide an autonomous patient transport bed that allows for the safe transport of a patient while protecting them from airborne infectious agents during movement by installing an air curtain in the cap drive unit.

[0009] Another objective of the present invention is to provide an autonomous patient transport bed that allows medical personnel to quickly access a patient and perform emergency treatment and medical care even if an emergency occurs during autonomous transport, as the inner or outer cap opens in a sliding direction.

[0010] Another objective of the present invention is to provide an autonomous patient transport bed that prevents unnecessary waiting time and inconvenience caused by elevator boarding by controlling an elevator along the autonomous driving path where the autonomous patient transport bed moves through a central control unit.

[0011] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below.

[0012]

[0013] According to one aspect of the present invention for solving the above technical problem, an autonomous patient transport bed is linked with a central control unit to move along an autonomous driving path and linkedly controls the operation of an elevator on the autonomous driving path,

[0014] It may include a bed body; an autonomous driving unit formed at the lower part of the bed body; and a cap driving unit that operates so that a cap unfolds upward from the side edge of the bed body to protect the upper body of the patient while moving.

[0015] According to one embodiment of the present invention, plate-shaped safety railings are installed on each of the four sides of the bed body, and each safety railing is normally inserted vertically into the body and protrudes upward when the patient moves to prevent the patient from falling out.

[0016] According to one embodiment of the present invention, the autonomous driving unit may include a vehicle body; a motor installed inside the vehicle body; a plurality of driving wheels driven by the rotational force of the motor; and a rechargeable battery that supplies power to the motor.

[0017] According to one embodiment of the present invention, a sensor module for detecting obstacles and people around the vehicle body may be provided on at least one side of the vehicle body, either the front or the rear in the driving direction.

[0018] According to one embodiment of the present invention, the side of the vehicle body equipped with the sensor module is formed as a downwardly inclined surface toward the ground, and a path recognition unit for recognizing a driving path mark displayed on the ground may be further formed on the inclined surface.

[0019] According to one embodiment of the present invention, the cap driving unit may include: an inner cap installed to wrap around the side edge of the bed body in a "U" shape and positioned at a 90-degree angle around a rotation axis connected to the bed body; an outer cap that is overlapped in two stages on the outer side of the inner cap, is rotatable together with the inner cap, and is slidably coupled with the inner cap to unfold in the longitudinal direction so as to expand the area covering the upper half of the patient's body; an air curtain installed on the inner edge of the inner cap and the outer cap, respectively, to block the internal space covering the upper half of the patient's body from external contaminants; a first camera unit installed on the inner surface of at least one of the inner cap or the outer cap to observe the patient's condition; a first driving unit that rotates the inner cap and the outer cap in a 90-degree direction; a second driving unit that moves the inner cap and the outer cap in the longitudinal direction of the bed body; and a sliding driving unit that operates to expand the coverage area by slidably coupling the inner cap and the outer cap.

[0020] According to one embodiment of the present invention, the autonomous driving unit may further include a driving control unit that controls the steering of the driving wheel and the driving of the motor inside the vehicle body.

[0021] According to one embodiment of the present invention, a first information display portion for information display and manual operation can be formed on the side of the outer cap.

[0022] According to one embodiment of the present invention, an IoT sensor unit capable of communicating with a central control unit can be formed on the upper surface of the outer cap.

[0023] According to one embodiment of the present invention, a second camera unit for capturing the situation around the vehicle body while driving may be formed in the IOT sensor unit.

[0024] According to one embodiment of the present invention, a second information display unit for information display and manual operation can be formed on the side of the bed body.

[0025]

[0026] As described above, the autonomous patient transport bed according to the embodiment of the present invention forms a cap drive unit in which a cap is deployed upward from the side edge of the bed body and operates, thereby covering the upper body of the patient during transport, which allows for psychological stability and privacy protection for the patient and has the effect of preventing impact from the external environment.

[0027] In addition, the present invention has the effect of safely protecting the patient from airborne infectious agents during transport by installing an air curtain in the cap drive unit.

[0028] In addition, the present invention has the effect of allowing medical personnel to quickly access a patient and provide emergency treatment and medical care even if an emergency occurs during autonomous transport, as the inner or outer cap opens in a sliding direction.

[0029] In addition, the present invention has the effect of preventing unnecessary waiting time and inconvenience associated with boarding elevators by controlling elevators along the autonomous driving path where the autonomous patient transport bed moves, through a central control unit.

[0030]

[0031] FIG. 1 is a perspective view illustrating an autonomous patient transfer bed according to one embodiment of the present invention.

[0032] FIG. 2 is a front view of an autonomous patient transfer bed according to one embodiment of the present invention.

[0033] FIG. 3 is a front view illustrating the state after operation of the cap drive unit of an autonomous patient transfer bed according to one embodiment of the present invention.

[0034] FIG. 4 is a plan view of an autonomous patient transfer bed according to one embodiment of the present invention.

[0035] FIG. 5 is a side view of an autonomous patient transport bed according to one embodiment of the present invention.

[0036]

[0037] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0038] The terms used herein are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprising" and / or "comprising" does not exclude the presence or addition of one or more other components, steps, actions, and / or elements to the mentioned components, steps, actions, and / or elements.

[0039] Furthermore, throughout the specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "indirectly" or "electrically connected" with other members or elements in between.

[0040] Additionally, throughout the specification, the description that each layer (film), region, pattern, or structure is formed "on" or "under" the substrate, each layer (film), region, pad, or pattern includes both direct formation and formation through another layer. The criteria for "on" or "under" each layer are described based on the drawings.

[0041] Furthermore, expressions such as 'first, second,' etc., are used solely to distinguish multiple compositions and do not limit the order or other characteristics between the compositions.

[0042] Furthermore, the flowcharts illustrated in the drawings are merely illustrative steps to obtain the most desirable results in carrying out the present invention, and it is obvious that other steps may be added or some steps may be deleted.

[0043] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0044] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

[0045] FIG. 1 is a perspective view illustrating an autonomous patient transfer bed according to an embodiment of the present invention, FIG. 2 is a front view of an autonomous patient transfer bed according to an embodiment of the present invention, FIG. 3 is a front view illustrating the state after operation of the cap drive unit of an autonomous patient transfer bed according to an embodiment of the present invention, FIG. 4 is a plan view of an autonomous patient transfer bed according to an embodiment of the present invention, and FIG. 5 is a side view of an autonomous patient transfer bed according to an embodiment of the present invention.

[0046] According to one embodiment of the present invention, an autonomous patient transfer bed (100) is linked with a central control unit to move along an autonomous driving path, and can be linked to control the operation of an elevator on the autonomous driving path. The central control unit can be linked with the elevator control unit and the control unit of the autonomous patient transfer bed (100) by centrally controlling them.

[0047] Referring to FIGS. 1 to 5, an autonomous patient transport bed (100) according to one embodiment of the present invention may be largely composed of a bed body (110), an autonomous driving unit (120), and a cap driving unit (130).

[0048] The above bed body (110) can provide a bed space where a patient can lie down and live. A mattress can be placed in the bed space.

[0049] At this time, safety railings (111) may be installed on each of the four outer sides of the bed body (110) where the mattress is placed.

[0050] At this time, the safety railing (111) can be manufactured in a plate shape and can provide a structure that can be slid vertically and inserted into the main body.

[0051] At this time, the flat safety railing (111) can be used while normally inserted inside the main body so that the patient can easily get on or off the bed.

[0052] In addition, when moving the patient by autonomous driving, the safety railing (111) protrudes from the upper part of the bed body (110) to form railings on all four sides, thereby preventing the patient from falling off the bed and sustaining injuries.

[0053] The safety railings (111) are formed on the front, rear, left, and right sides of the bed body (110), respectively, and their heights and shapes may vary. For example, the height of the safety railings (111) formed on the front and rear sides may be made higher. Additionally, the safety railings (111) formed on the left and right sides may be installed in multiple sections, and each safety railing (111) may be individually operated to move up and down.

[0054] At this time, driving devices (not shown) for the lifting and lowering operation of the safety railing (111) may be installed on the bed body (110).

[0055] At this time, the lifting operation of the safety railing (111) may be operated through the first information display unit (138) formed on the outer cap (132), or a controller (not shown) that can be directly operated by the patient may be installed on one side of the bed body (110).

[0056] An autonomous driving unit (120) may be formed in the lower part of the bed body (110).

[0057] The above autonomous driving unit (120) may include a vehicle body (121), a motor (122) installed inside the vehicle body (121), a plurality of driving wheels (123) driven by the rotational force of the motor (122), and a rechargeable battery (124) that supplies power to the motor (122).

[0058] At this time, the motor (122) and the rechargeable battery (124) may be positioned on the vehicle body (121) where the patient's upper body is located. For example, the motor (122) and the rechargeable battery (124) may be positioned so that the center of gravity of the vehicle body (121) is skewed toward the upper body when viewed from the patient's perspective.

[0059] The above driving wheel (123) may be installed in multiple numbers on the floor of the vehicle body (121) and may consist of a driving wheel that directly receives power from the motor (122) and a steering wheel that steers the direction of travel of the vehicle body.

[0060] At this time, the drive wheel may be located at the rear of the vehicle body and the steering wheel at the front of the vehicle body, based on the direction in which the vehicle body is traveling.

[0061] A sensor module (125) for detecting obstacles and people around the vehicle body may be provided on at least one side of the front or rear of the vehicle body (121) in the driving direction.

[0062] At this time, it is preferable that the sensor module (125) be formed on the front of the vehicle body (121) in the driving direction, and the sensor module (125) can detect obstacles in the driving direction of the vehicle body.

[0063] The front surface of the vehicle body (121) on which the sensor module (125) is formed may be formed as a downwardly inclined surface (126) toward the ground. At this time, a path recognition unit (127) for recognizing a driving path marker marked on the ground may be further formed on the inclined surface (126).

[0064] For example, recognition means such as marking tapes to guide the movement path of a transfer bed (100) may be attached to the hospital floor. In this case, the marking tapes may indicate different movement paths depending on their color, width, and shape, and the path recognition unit (127) can recognize the color, width, and shape of such marking tapes to search for a path to move.

[0065] According to one aspect of the present invention, a cap driving unit (130) may be provided.

[0066] The above cap drive unit (130) can cause the cap (131, 132) to unfold upward from the side edge of the bed body (110) so that the upper body of the patient is covered during autonomous movement.

[0067] The following describes the cap drive unit (130).

[0068] The above cap driving unit (130) may be formed in a two-stage overlapping structure in which the inner cap (131) and the outer cap (132) are overlapped.

[0069] At this time, the inner cap (131) and outer cap (132) may be in the form of a plate body bent into a "C" shape. At this time, the inner cap (131) is installed so that the "C"-shaped bent portion wraps around the side edge of the bed body (110), and both ends extend into the interior of the bed body (110) and may be rotatably connected to a rotation axis formed inside the bed body (110). The inner cap (131) may be operated to be erected at a 90-degree angle or laid flat parallel to the bed body (110) around the rotation axis.

[0070] An outer cap (132) may be installed on the outer side of the inner cap (131) in a two-stage overlapping structure. At this time, the inner cap (131) and the outer cap (132) may be spaced apart, maintaining a certain distance from each other without touching.

[0071] At this time, the outer cap (132) is installed such that the "C"-shaped bent portion wraps around the "C"-shaped bent portion of the inner cap (131), and both ends can be extended to wrap around the outside of the bed body (110).

[0072] At this time, both ends of the inner cap (131) are located inside the bed body (110), but both ends of the outer cap (132) are located outside the bed body (110).

[0073] Accordingly, a sliding drive unit (137) for connecting the outer cap (132) to the inner cap (131) so that it can rotate together with the outer cap (131) can be formed between the "C" shaped bends of the inner cap (131) and the outer cap (132) as shown in FIG. 5.

[0074] At this time, the sliding drive unit (137) may be composed of a combination of an LM guide and a ball screw drive unit. For example, the LM guide may slidably connect the inner cap (131) and the outer cap (132), and the ball screw drive unit may fix a transfer block, which moves linearly by the rotation of a ball screw connected to a motor, to either the inner cap (131) or the outer cap (132), thereby allowing the inner cap (131) and the outer cap (132) to overlap or expand and spread out according to the direction of rotation of the motor.

[0075] For example, the inner cap (131) and the outer cap (132) can be extended in the longitudinal direction to expand the area covering the patient's upper body.

[0076] At this time, the side to which the motor is attached between the inner cap (131) and the outer cap (132) is fixed, and the side to which the transfer block is attached can slide relatively.

[0077] According to one embodiment of the present invention, an air curtain (133) may be installed on the inner edge of each of the inner cap (131) and the outer cap (132).

[0078] The air curtain (133) may be composed of a compressor that produces compressed air and injection nozzles that inject the compressed air produced by the compressor at high pressure to form a barrier by air pressure. At this time, the compressor may be installed inside the vehicle body (121), and the injection nozzles may be installed on the inner surface of the inner cap (131) and the outer cap (132). At this time, the injection nozzles may be installed along the "U"-shaped inner surface of the inner cap (131) and the outer cap (132), and may be installed close to the rim.

[0079] At this time, the spray angles of the spray nozzles can be installed so as to be directed toward the center of the bed where the patient is lying. At this time, the spray nozzles can be spaced at equal intervals.

[0080] The air curtain (133) of the present invention can block the upper body space of a patient, which is covered by the inner cap (131) and the outer cap (132), from the outside, thereby preventing contaminants from penetrating.

[0081] This enables the safe transport of the patient by blocking airborne germs and bacteria from coming into contact with the patient.

[0082] A first camera unit (134) for observing the patient's condition in real time can be installed on the inner surface of at least one of the inner cap (131) or outer cap (132).

[0083] The first camera unit (134) can observe biological information such as changes in the patient's facial expression or body temperature in real time to determine abnormal signs in the patient, thereby enabling the medical staff to respond quickly.

[0084] For example, a central control unit connected to a network can receive real-time feedback on the patient's physical information to determine abnormal signs, and if abnormal signs are suspected, it can urgently call a manager in real-time to ensure a rapid response.

[0085] At this time, the first camera unit (134) may be configured as a composite camera including an image camera for observing the patient's facial expression and a thermal imaging camera for measuring the patient's body temperature.

[0086] According to one embodiment of the present invention, a first driving unit (135) that rotates the inner cap (131) and the outer cap (132) in a 90-degree direction may be provided.

[0087] The first drive unit (135) has a rotating shaft formed to rotatably connect the end of the inner cap (131) to the bed body (110), and the rotating shaft is connected to the output shaft of the stepping motor to receive rotational power.

[0088] At this time, a second driving unit (136) may be provided to reciprocate the inner cap (131) and outer cap (132) in the longitudinal direction of the bed body (110).

[0089] At this time, the inner cap (131), which moves in a straight direction by the second driving unit (136), also moves in a straight direction along with its rotation axis.

[0090] That is, the entire first drive unit (135) moves back and forth in a straight direction together by the operation of the second drive unit (136).

[0091] At this time, the second drive unit (136) is composed of a ball screw that rotates by a motor and a transfer block that is spirally coupled to the ball screw and moves, and the first drive unit (135) can be coupled to the transfer block so that they move together.

[0092] According to one embodiment of the present invention, a sliding drive unit (137) may be provided that operates to expand the cover area by slidably connecting the inner cap (131) and the outer cap (132).

[0093] Accordingly, a sliding drive unit (137) for connecting the outer cap (132) to the inner cap (131) so that it can rotate together with the outer cap (131) can be formed between the "C" shaped bends of the inner cap (131) and the outer cap (132) as shown in FIG. 5.

[0094] At this time, the sliding drive unit (137) may be composed of a combination of an LM guide and a ball screw drive unit. For example, the LM guide may slidably connect the inner cap (131) and the outer cap (132), and the ball screw drive unit may fix a transfer block, which moves linearly by the rotation of a ball screw connected to a motor, to either the inner cap (131) or the outer cap (132), thereby allowing the inner cap (131) and the outer cap (132) to overlap or expand and spread out according to the direction of rotation of the motor.

[0095] For example, the inner cap (131) and the outer cap (132) can be extended in the longitudinal direction to expand the area covering the patient's upper body.

[0096] According to one embodiment of the present invention, the autonomous driving unit (120) may further include a driving control unit (150) that controls the steering of the driving wheel (123) and the driving of the motor (122) inside the vehicle body (121).

[0097] At this time, the drive control unit (150) is connected to the central control unit via a network to control the steering of the driving wheel (123) and the driving of the motor (122).

[0098] A first information display unit (138) for information display and manual operation may be formed on the side of the outer cap (132). At this time, the first information display unit (138) may display biometric information such as the patient's blood pressure (BP), electrocardiogram (EKG), and body temperature, as well as patient information such as age, blood type, and gender.

[0099] Additionally, the first information display unit (138) may display a touch button for manual operation of the transfer bed.

[0100] At this time, some of the patient's biometric information displayed may be information obtained through the first camera unit (134) or obtained in real time through a sensor attached to the patient's body.

[0101] At this time, an IoT sensor unit (139) capable of communicating with a central control unit may be formed on the upper surface of the outer cap (132). Patient information can be received from the central control unit through the IoT sensor unit (139), and the patient information can be displayed through the first information display unit (138).

[0102] The above central control unit may be provided in the form of a main server of a computer room operated in a hospital.

[0103] At this time, the IOT sensor unit (139) can share the current location of the patient transfer bed (100) through communication with the central control unit and can receive information about the movement path through the central control unit.

[0104] At this time, a second camera unit (140) for capturing the surroundings of the vehicle body while driving may be formed in the IOT sensor unit (139).

[0105] In addition, a second information display unit (112) for information display and manual operation can be formed on the side of the bed body (110).

[0106] The above second information display unit (112) can display information about the patient's personal details and destination of travel.

[0107] An autonomous patient transport bed according to an embodiment of the present invention forms a cap drive unit in which a cap is deployed upward from the side edge of the bed body and operates so that the upper half of the patient is covered during transport, thereby enabling psychological stability and privacy protection for the patient and preventing impact from the external environment.

[0108] In addition, by installing an air curtain in the cap drive unit, the present invention can safely protect and transport the patient from airborne infectious agents during transport, and as the inner or outer cap opens in a sliding direction, medical personnel can quickly access the patient to provide emergency treatment and medical care even if an emergency occurs during autonomous transport.

[0109] In addition, the present invention can prevent unnecessary waiting time and inconvenience associated with boarding elevators by controlling elevators along the autonomous driving path where the autonomous patient transport bed moves through a central control unit.

[0110] Although the present invention has been described above, those skilled in the art will recognize that the invention may be implemented in other forms while maintaining the technical concept and essential features of the invention.

[0111] The scope of the rights of the present invention shall be determined primarily by the claims; however, all modifications or variations derived from configurations directly derived from the descriptions in the claims, as well as configurations equivalent thereto, shall be interpreted as being included within the scope of the rights of the present invention.

[0112]

[0113] 100: Autonomous patient transport bed 110: Bed main body

[0114] 111: Safety railing 112: Second information display

[0115] 120: Autonomous driving unit 121: Vehicle body

[0116] 122: Motor 123: Driving Wheel

[0117] 124: Rechargeable battery 125: Sensor module

[0118] 126: Slope 127: Path recognition unit

[0119] 130: Cap drive unit 131: Inner cap

[0120] 132: Outer cap 133: Air curtain

[0121] 134: 1st Camera Unit 135: 1st Driving Unit

[0122] 136: Second drive unit 137: Sliding drive unit

[0123] 138: First information display unit 139: IOT sensor unit

[0124] 140: 2nd Camera Unit

Claims

1. An autonomous patient transport bed that is linked to a central control unit to move along an autonomous driving path and controls the operation of elevators on the autonomous driving path in conjunction, The above-mentioned autonomous patient transfer bed is, Bed body; An autonomous driving unit formed at the lower part of the bed body; and An autonomous patient transfer bed characterized by including a cap drive unit that operates so that the cap unfolds upward from the side edge of the bed body to protect the upper body of the patient during movement.

2. In Paragraph 1, An autonomous patient transfer bed characterized by the fact that the bed body has plate-shaped safety railings installed on each of its four sides, and each safety railing is normally inserted vertically into the body and protrudes upward when the patient is moved to prevent the patient from falling out.

3. In Paragraph 1, The above-mentioned autonomous driving unit is, Body; A motor installed inside the vehicle body; A plurality of driving wheels driven by the rotational force of the above motor; and An autonomous patient transport bed characterized by including a rechargeable battery that supplies power to the motor.

4. In Paragraph 3, An autonomous patient transport bed characterized by having a sensor module for detecting obstacles and people around the vehicle body provided on at least one side of the vehicle body in the driving direction, either the front or the rear.

5. In Paragraph 4, An autonomous driving patient transport bed characterized by forming a side of the vehicle body equipped with the above-mentioned sensor module as a downwardly inclined surface toward the floor, and further forming a path recognition unit on the inclined surface that recognizes a driving path mark displayed on the floor.

6. In Paragraph 1, The above cap driving unit is, An inner cap installed to wrap around the side edge of the bed body in a "ㄷ" shape and positioned at a 90-degree angle around a rotation axis connected to the bed body; An outer cap that is overlapped in two stages on the outer side of the inner cap, rotates together with the inner cap, and slides together with the inner cap to unfold in the longitudinal direction, thereby expanding the area covering the patient's upper body; An air curtain installed on the inner rims of the inner cap and the outer cap, respectively, to block the internal space covering the patient's upper body from external contaminants; A first camera unit installed on the inner surface of at least one of the inner cap or outer cap to observe the patient's condition; A first driving unit that rotates the inner cap and outer cap in a 90-degree direction; A second driving unit for moving the inner cap and outer cap in the longitudinal direction of the bed body; and An autonomous patient transfer bed characterized by including a sliding drive unit that operates to expand the cover area by slidably connecting the inner cap and the outer cap.

7. In Paragraph 6, The autonomous driving unit described above further comprises a drive control unit that controls the steering of the driving wheel and the driving of the motor inside the vehicle body, characterized in that it is an autonomous patient transfer bed.

8. In Paragraph 6, An autonomous patient transfer bed characterized by forming a first information display section for information display and manual operation on the side of the outer cap.

9. In Paragraph 6, An autonomous patient transfer bed characterized by forming an IoT sensor unit capable of communicating with a central control unit on the upper surface of the outer cap.

10. In Paragraph 9, An autonomous driving patient transport bed characterized by having a second camera unit formed in the above-mentioned IOT sensor unit for capturing the situation around the vehicle body while driving.

11. In Paragraph 6, An autonomous patient transfer bed characterized by forming a second information display unit for information display and manual operation on the side of the bed body.

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