CN117357141A - Diagnostic bed and medical device with same - Google Patents

Abstract

A diagnostic bed capable of reducing manual actuation force of a top plate and a medical device provided with the diagnostic bed. The diagnostic bed is provided with: a top plate; a driving motor for providing a driving force for horizontally moving the top plate; a transmission mechanism for transmitting the driving force of the driving motor to the top plate so as to horizontally move the top plate; and a top plate attaching/detaching mechanism including an inserted portion provided on one of the top plate side and the transmission mechanism side and an insertion portion provided on the other of the top plate side and the transmission mechanism side, the top plate being connected to or disconnected from the transmission mechanism by connecting or disconnecting the insertion portion to or from the inserted portion.

Description

Diagnostic bed and medical device with same

Technical Field

The present invention relates to a diagnostic bed and a medical device provided with the same.

Background

Diagnostic beds are known to be widely used in medical examinations. In the examination process, the object is laid on the examination bed, the motor of the examination bed drives the top plate of the examination bed to convey the object into the cavity of the stand for scanning, and the motor braking device keeps the top plate at the stop position. However, when an emergency situation is encountered, it is necessary to manually pull the subject out of the cavity of the gantry.

In most of the conventional diagnostic beds, a motor is connected to a top plate on which a subject is placed via a two-stage transmission mechanism. When an emergency occurs and the subject needs to be pulled out of the cavity of the stand manually, the motor brake device and the motor are disconnected, so that the top plate on which the subject is placed is in a state that the subject can be pushed. However, since the motor and the top plate are connected with a member having a large self weight such as the first stage transmission system and the second stage transmission system in addition to the self weight of the motor and the top plate, the resistance to be overcome at the time of manual start is large, and the doctor takes a lot of effort and time to operate, and the time for the subject to come out of the cavity is long, which tends to cause anxiety and fear to the subject.

In the prior art, an electromagnetic clutch arranged between a top plate and a transmission system is proposed to be used as a top plate loading and unloading mechanism, but due to the transmission requirement, the electromagnetic clutch needs to be powered for a long time, so that the electromagnetic clutch heats, and after long-time working, the heat can be conducted to a cable, a synchronous belt and a bearing, so that the service life and the reliability of a diagnosis bed are affected. In addition, when the top plate moves and scans the subject, if the power is suddenly turned off, the electromagnetic clutch is separated from the transmission shaft that drives the brake motor, and emergency braking is no longer possible, and there is a safety risk. Therefore, in order to solve the safety risk, it is necessary to use a brake (non-excited operation type) in combination, and other components are added, and the mechanism becomes relatively complex.

Accordingly, it is desirable to provide a simple and reliable structure that does not involve driving and transmitting a motor, a timing belt, or the like, or that involves fewer driving and transmitting when the top plate is pushed, thereby reducing the manual start force and eliminating the problems of the electromagnetic clutch of the related art.

Disclosure of Invention

The invention aims to provide a diagnosis bed which has a simple structure and small manual starting force and is convenient to assemble and disassemble and a medical device with the diagnosis bed.

Means for solving the technical problems

The diagnostic bed according to claim 1 comprises: a top plate; a driving motor for providing a driving force for horizontally moving the top plate; a transmission mechanism for transmitting the driving force of the driving motor to the top plate so as to horizontally move the top plate; and a top plate attaching/detaching mechanism including an inserted portion provided on one of the top plate side and the transmission mechanism side and an insertion portion provided on the other of the top plate side and the transmission mechanism side, the top plate being connected to or disconnected from the transmission mechanism by connecting or disconnecting the insertion portion to or from the inserted portion.

In the diagnostic bed according to claim 2, the inserted portion is provided on the top plate side, and is configured by a block fixed to the top plate and having a space formed therein, and a locking portion fitted in the space of the block and movable in the first direction with respect to the block, the inserted portion being locked, the inserted portion being provided on the transmission mechanism side and fixed to the transmission mechanism, and the inserted portion being inserted in the second direction.

In the diagnostic bed according to claim 3, a first space extending in the second direction into which the insertion portion is inserted and a second space extending in the first direction into which the locking portion is moved are formed in the block, and the locking portion is fitted in the second space of the block and is movable in the second space in the first direction.

According to the structure of any one of the above-described aspects 1 to 3, the connection and separation between the top plate and the transmission mechanism can be easily achieved with a simple structure by using the block and the locking portion fixed on the top plate side and the insertion portion fixed on the timing belt, and the related problems caused by the electromagnetic clutch are avoided by using the mechanical structure as the top plate attaching/detaching mechanism.

In the diagnostic bed according to claim 4, the locking portion is a clamping plate pushed by a spring, and the insertion portion is a pin.

In the diagnostic bed according to claim 5, the locking portion is a locking pin pushed by a spring, and the insertion portion is a pin having a through hole through which the locking pin passes.

In the diagnostic bed according to claim 6, the locking portion is 2 clamping blocks pushed by a spring, and the insertion portion is a pin having a pin groove for locking the 2 clamping blocks.

According to the structure of any one of the above-described aspects 4 to 6, connection and separation between the top plate and the transmission mechanism can be easily achieved with a simple structure.

In the diagnostic bed according to claim 7, the pin is a bidirectional pin, and the top plate attaching/detaching mechanism is capable of bidirectional connection or disconnection between the insertion portion and the inserted portion.

In the diagnostic bed according to claim 8, the 2 blocks are provided on both sides of the movement path of the insertion portion in opposition in the block body, and are connected with the springs, respectively, so as to be rotatable about different rotation axes.

According to the configuration of claim 7 or 8, the top plate can be moved in both directions after being separated from the transmission mechanism, and the top plate can be connected to the transmission mechanism from both directions.

In the diagnostic bed according to claim 9, the top plate attaching/detaching mechanism further includes a handle fixed to the top plate and connected to the locking portion, wherein when the handle is pulled, the locking portion moves to release the locking of the insertion portion.

In the diagnostic bed according to claim 10, the top plate dismounting mechanism further comprises a tension transmission part arranged between the handle and the locking part, and the tension transmission part comprises a guide rope, a pulley and a labor-saving lever.

According to the structure described in claim 9 or 10, the connection and separation between the top plate and the transmission mechanism can be achieved only by operating the handle, in other words, the disassembly and assembly of the top plate can be conveniently achieved while maintaining the simple structure.

In the diagnostic bed according to claim 11, when the insertion portion is connected to the inserted portion, the locking portion of the inserted portion locks the insertion portion by the elastic force of a spring.

In the diagnostic bed according to claim 12, when the insertion portion is separated from the inserted portion, the locking portion moves against the elastic force of the spring by the tensile force transmitted through the tensile force transmission portion, and the locking of the insertion portion is released.

In the diagnostic bed according to claim 13, the transmission mechanism includes a synchronous belt, the insertion portion is fixed to the synchronous belt, the top plate attaching/detaching mechanism further includes a synchronous belt supporting device, the synchronous belt supporting device is fixed below the synchronous belt, and supports the synchronous belt when the synchronous belt deflects and sinks.

In the diagnostic bed according to claim 14, the synchronous belt supporting device has supporting wheels, and is not in contact with the lower transmission guide rail when the synchronous belt is not deflected and is not submerged, and is in contact with the lower transmission guide rail when the synchronous belt is deflected and submerged.

According to the structure of claim 13 or 14, the timing belt is prevented from being deflected and sunk, and the timing belt is prevented from being deformed, and the insertion portion above the timing belt is prevented from being mounted in alignment with the inserted portion.

In the diagnosis bed according to claim 15, the transmission mechanism includes a first-stage transmission mechanism and a second-stage transmission mechanism, the first-stage transmission mechanism is connected with the driving motor, the second-stage transmission mechanism is connected with the top plate, and the top plate dismounting mechanism is arranged between the top plate and the second-stage transmission mechanism.

In the diagnostic bed according to claim 16, the transmission mechanism includes a first-stage transmission mechanism and a second-stage transmission mechanism, the first-stage transmission mechanism is connected with the driving motor, the second-stage transmission mechanism is connected with the top plate, and the top plate dismounting mechanism is disposed between the second-stage transmission mechanism and the first-stage transmission mechanism.

In the diagnostic bed according to claim 17, the transmission mechanism is a primary transmission mechanism, and the top plate dismounting mechanism is disposed between the top plate and the primary transmission mechanism.

According to the configuration of any one of claims 15 to 17, the resistance at the time of manual actuation can be reduced, the operation load on the doctor can be reduced, and the subject can be pulled out of the cavity more quickly at the time of emergency, and anxiety of the subject can be alleviated.

The medical device according to claim 18, comprising the diagnostic bed according to any one of claims 1 to 17.

The medical device according to claim 19 is any one of an MR device, a CT device, and a PET device.

Effects of the invention

The structure of the present invention is suitable for a 1-stage or multi-stage transmission mechanism, and according to the structure of the present invention, a wide range of applications can be provided.

In addition, the invention has simple structure, can release the connection state by pulling the handle, has quick response and is also quick and simple to reposition and install.

In addition, the structure of the invention does not influence the repeated positioning precision of the top plate, does not need to change the original top plate positioning system, and only needs to use the original revolution number coding position, so that the reset adjustment of the top plate is simpler.

In addition, the invention adopts a mechanical structure to realize quick installation and quick separation between the top plate and the transmission mechanism, thereby avoiding the related problems caused by the electromagnetic clutch.

In addition, in an emergency state, the pulling force required for pulling the handle is small, the manual starting force of the top plate is also small, and the detected body can be separated from the stand cavity in a short time, so that the anxiety of the detected body is relieved.

In addition, the structure of the invention can reduce equipment loss, equipment maintenance and maintenance cost.

In addition, the structure of the invention can realize the bidirectional loading and unloading of the top plate and the transmission mechanism, and the flexibility of operation is increased.

Drawings

Fig. 1 is a schematic diagram showing an attachment position of a top plate attaching/detaching mechanism of a diagnostic bed according to embodiment 1.

Fig. 2A is a perspective view showing an insertion portion in the top plate attaching/detaching mechanism according to embodiment 1, fig. 2B is a perspective view showing an inserted portion in the top plate attaching/detaching mechanism according to embodiment 1, and fig. 2C is a schematic perspective view showing a connection state between the insertion portion and the inserted portion.

Fig. 3A to 3D are schematic views showing a change from a connected state to a separated state of the top plate attaching/detaching mechanism according to embodiment 1, wherein fig. 3A is a perspective schematic view showing the top plate attaching/detaching mechanism in the connected state, fig. 3B is a cross-sectional view taken along line A-A in fig. 3A, fig. 3C is a schematic view showing a change from the locked state to the non-locked state in fig. 3B, and fig. 3D is a perspective schematic view showing the top plate attaching/detaching mechanism in the separated state.

Fig. 4A and 4B are schematic views showing a change from the locked state to the unlocked state in a modification of the top plate attaching/detaching mechanism of embodiment 1.

Fig. 5A is a perspective view schematically showing a diagnostic bed having a timing belt supporting device, fig. 5B is a sectional view taken along a line A-A of fig. 5A, and fig. 5C is a sectional view taken along a line B-B of fig. 5A.

Fig. 6 is a schematic view showing the handle and the tension transmitting portion.

Fig. 7 is a schematic view showing the mounting position of the top plate attaching/detaching mechanism of the diagnostic bed according to embodiment 2.

Fig. 8A is a perspective view showing an insertion portion and an inserted portion of the top plate attaching/detaching mechanism according to embodiment 3, and fig. 8B is a cross-sectional view showing the inserted portion in fig. 8A.

Fig. 9A and 9B are schematic views showing the insertion portion of the top plate attaching/detaching mechanism being inserted in both directions, and fig. 9C is a side view showing the insertion portion and the inserted portion in a connected state.

Fig. 10A is a sectional view taken along the line A-A in fig. 9C, and fig. 10B is a sectional view taken along the line B-B in fig. 9C.

Fig. 11A and 11B are schematic views showing the force receiving direction and the rotation direction of each member.

Fig. 12 is a schematic view of a prior art diagnostic bed and gantry.

Fig. 13 is a schematic view showing a top plate attaching/detaching position of a diagnostic bed according to the prior art.

Detailed Description

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the present invention. In the following description, the same reference numerals are given to components having substantially the same functions and structures, and the description will be repeated only when necessary. In the drawings, the same components may be represented by different proportions.

Fig. 12 is a schematic view of a prior art diagnostic bed and gantry. The gantry shown in fig. 12 has a hollow chamber, and can be moved in by a top plate on which a subject is placed and scan the subject. The couch shown in fig. 12 includes a top plate on which a subject is placed, a multi-stage transmission mechanism including a first-stage transmission mechanism and a second-stage transmission mechanism, a couch lifting device that controls lifting and lowering of the couch, a motor that supplies driving force, and a couch main frame that accommodates the multi-stage transmission mechanism and the motor. As shown in fig. 12, the transmission mechanism directly connected to the motor in the multi-stage transmission mechanism is referred to as a first-stage transmission mechanism, and the transmission mechanism connected between the first-stage transmission mechanism and the top plate is referred to as a second-stage transmission mechanism. The first-stage transmission mechanism is fixed on the main support of the diagnostic bed and comprises a first-stage synchronous belt and a speed reducer, wherein the speed reducer is connected with the motor and transmits the driving force from the motor to the first-stage synchronous belt. The second-stage transmission mechanism is arranged on the main support of the diagnostic bed in a sliding manner on the main support of the diagnostic bed and comprises a second-stage synchronous belt and a transmission support, and the first-stage transmission mechanism and the second-stage transmission mechanism can move relatively. Fig. 13 is a schematic view showing a top plate attaching/detaching position of a diagnostic bed according to the prior art. In fig. 13, a part of the structure of the diagnostic bed in fig. 12 is simplified, and a motor braking device for braking a motor, which provides braking force to a multistage transmission mechanism connected thereto via the motor, is schematically shown. The motor braking device may be integral with the motor or may be provided separately, and for convenience of explanation, the separately provided motor braking device is illustrated in fig. 13. In the prior art diagnostic bed structure, when an emergency situation is encountered and it is necessary to manually pull the subject out of the cavity of the gantry, the connection between the motor and the motor brake is broken before the top plate is manually pushed, as shown in fig. 13. The scissors pattern shown in the figure represents a manual release device controlled by a lever or the like. The structure shown in the figure can realize the separation between the motor braking device and other parts including the top plate, but the top plate needs to be pulled to drive the second-stage transmission mechanism, the first-stage transmission mechanism and the motor, so that the manual starting resistance is high, a doctor is hard to operate and wastes time, the time for the detected body to separate from the cavity of the stand is long, and anxiety and fear are easy to generate.

(embodiment 1)

In order to reduce the manual start force in an emergency, the inventors have found that by providing a top plate attaching/detaching mechanism between the top plate and the timing belt for driving the top plate, it is possible to reduce the resistance to be overcome without attaching any structure related to the driving and transmission of the top plate at the time of manual start.

Fig. 1 is a schematic diagram showing an attachment position of a top plate attaching/detaching mechanism of a diagnostic bed according to embodiment 1. The diagnostic bed of embodiment 1 comprises: the top plate 10, the top plate attaching/detaching mechanism 20, the second stage transmission mechanism 30, the first stage transmission mechanism 40, the motor 50, and the motor brake device 51. As described above, the motor braking device may be integrated with the motor or may be provided separately, and the motor braking device provided separately is illustrated for convenience of explanation. The motor brake device functions as a brake mechanism of the diagnostic bed, the motor functions as a driving mechanism of the diagnostic bed, and the second-stage transmission mechanism and the first-stage transmission mechanism integrally function as transmission mechanisms of the diagnostic bed. The top plate 10 is located at the upper part of the bed, and the upper surface of the top plate 10 is the upper surface of the bed and is a placement surface on which the subject is placed. The second-stage transmission mechanism 30 is located below the top plate 10, and includes a second-stage timing belt 31 and a transmission bracket 32, and provides driving force to the top plate 10. The first-stage transmission mechanism 40 is located below the second-stage transmission mechanism 30, and includes a first-stage timing belt and a speed reducer 43 located between the motor 50 and the first-stage timing belt 41, and provides driving force to the second-stage transmission mechanism 30. The motor braking device is connected to a motor, controls the motor to supply a driving force for moving the top plate 10 in the horizontal direction, and the multistage transmission mechanism composed of the first stage transmission mechanism 40 and the second stage transmission mechanism 30 transmits the driving force of the motor to the top plate 10 to move the top plate in the horizontal direction. In fig. 1, the top plate attaching/detaching mechanism 20 is shown in a scissors pattern, and the structure of the top plate attaching/detaching mechanism 20 will be described in detail below.

(Top plate mounting and dismounting mechanism)

The top plate attaching/detaching mechanism 20 is provided below the top plate 10 and above the second-stage transmission mechanism 30, and the top plate 10 and the second-stage transmission mechanism 30 can be connected to or disconnected from each other via the top plate attaching/detaching mechanism 20.

The structure of the top plate attaching/detaching mechanism 20 will be described in detail with reference to fig. 2A to 2C. Fig. 2A is a perspective view showing an insertion portion in the top plate attaching/detaching mechanism according to embodiment 1, fig. 2B is a perspective view showing an inserted portion in the top plate attaching/detaching mechanism according to embodiment 1, and fig. 2C is a schematic perspective view showing a connection state between the insertion portion and the inserted portion.

The top plate attaching/detaching mechanism 20 includes an insertion portion 21 and an inserted portion 22, and the insertion portion 21 and the inserted portion 22 are provided on one of the top plate side and the transmission mechanism side, respectively, and the top plate and the transmission mechanism are connected or disconnected by connecting or disconnecting the insertion portion to or from the inserted portion. In the present embodiment, the insertion portion 21 is provided on the transmission mechanism side, and the inserted portion 22 is provided on the top plate side, but the inserted portion 22 may be provided on the transmission mechanism side, and the insertion portion 21 may be provided on the top plate side, and the description of the configuration in the second case will be omitted and only the configuration in the first case will be described below.

The inserted portion 22 is constituted by a block 23 and a locking portion 24, the upper surface of the block 23 is fixed to the lower surface of the top plate 10 and a space is formed inside, the locking portion 24 is fitted in the space of the block 23 and movable in the first direction X with respect to the block 23, and the locking portion 24 locks the inserted portion 21 when the inserted portion 21 is inserted into the block 23. In the present embodiment, the locking portion 24 is a clip plate pushed by a spring, and the insertion portion 21 is a pin.

In the following description, the movement direction of the locking portion 24 is defined as the first direction, i.e., the X direction, the insertion direction of the insertion portion with respect to the inserted portion is defined as the second direction, i.e., the Y direction, the direction orthogonal to the X direction and the Y direction is defined as the third direction, i.e., the Z direction, and the plane formed by the X direction and the Z direction is defined as the XZ plane.

As shown in fig. 2B and 2C, a first space S1 extending in the Y direction, which is the second direction, into which the insertion portion 21 is inserted, and a second space S2 extending in the X direction, which is the first direction, into which the locking portion 24 is moved, are formed in the block 23, and the locking portion 24 is fitted in the second space S2 of the block 23 and is movable in the X direction in the second space S2.

The clip boards as the engaging portion 24 include a first clip board 241 having a wide width in the Z direction and a second clip board 242 having a narrow width in the Z direction, and the first clip board 241 and the second clip board 242 are formed by, for example, integral molding, and the entire first clip board 241 and the second clip board 242 function as an engaging portion. The first clamp plate 241 is formed at its center with an opening including a large opening for releasing the insertion portion and a small opening for engaging with the pin groove of the insertion portion, the large opening and the small opening communicating in the X direction. The second clamp plate 242 extends in the X direction, and has one end connected to the center of one end side of the first clamp plate 241 and the other end connected to a tension transmission portion described later, and is configured to transmit tension from the outside through the tension transmission portion. A spring is provided between the center of the one end side of the first clamp plate 241 and the center of the one end of the second space S2 on the outer periphery of the second clamp plate 242.

In fig. 2B and 2C, the respective one end portions of the first and second clamp plates 241 and 242 are shown to protrude from both side surfaces of the block 23, but the end portions of the first clamp plate 241 may not protrude from the side surfaces of the block as required. In addition, first clamp plate 241 partially overlaps first space S1 of block 23 in the XZ plane, in other words, the inner peripheral portion of first clamp plate 241 on the small opening side is exposed from first space S1, that is, the inner peripheral portion of first clamp plate 241 on the small opening side is provided in the movement path of the insertion portion.

The insertion portion 21 is provided on the second-stage transmission mechanism 30 side, and is fixed to the second-stage transmission mechanism 30. The insertion portion 21 is constituted by a base 211 and a protruding portion 212, and as shown in fig. 2A, the base 211 is formed in a rectangular parallelepiped shape, for example, and the longitudinal direction thereof extends in the Z direction. The lower end of the base 211 is fixed to the timing belt of the lower transmission mechanism (here, the second-stage transmission mechanism 30). The protruding portion 212 is formed as a pin having a pin groove and a front end guide surface, for example. The protruding portion 212 extends in the Y direction, which is the second direction, and a bottom surface thereof is formed in a central portion of the XZ plane of the base 211, a front end portion thereof is formed with an inclined guide surface for guiding the locking portion 24 to the pin groove, and a pin groove for locking the locking portion 24 is formed at a proper position between the front end portion and the bottom surface thereof, and the pin groove is formed around a peripheral portion of the protruding portion 212 so as to be recessed inward from an outer peripheral surface of the protruding portion 212.

When the inserted portion 21 is inserted into the inserted portion 22 in the second direction Y, as shown in fig. 2C, the locking portion 24 of the inserted portion 22 locks the inserted portion 21 by the elastic force of the spring, more specifically, the small opening of the locking portion 24 locks the pin groove of the protruding portion 212 by the elastic force of the spring, thereby realizing connection of the inserted portion 21 and the inserted portion 22. Further, since the insertion portion 21 is fixed to the second-stage transmission mechanism and the inserted portion is fixed to the top plate, the connection between the top plate and the second-stage transmission mechanism is achieved by the connection between the insertion portion 21 and the inserted portion 22.

Therefore, the connection and separation between the top plate and the transmission mechanism can be conveniently realized by using the block body and the clamping part which are fixed on the side of the top plate and the inserting part which is fixed on the synchronous belt with a simple structure, and the related problems brought by the electromagnetic clutch are avoided by using a mechanical structure as the top plate dismounting mechanism.

Further, since the top plate attaching/detaching mechanism is provided between the top plate and the second stage transmission mechanism, the driving-related structure such as a timing belt is not attached to the top plate when the top plate is pushed, and therefore, the manual actuation force of the top plate can be significantly reduced.

(connection and separation process of insertion portion and inserted portion)

Next, a connection and separation process of the insertion portion and the inserted portion will be described with reference to fig. 3A to 3D.

Fig. 3A is a schematic perspective view showing the top plate attaching/detaching mechanism in a connected state. In fig. 3A, the clip of the inserted portion (here, the first clip 241) is engaged with the pin groove of the protruding portion of the inserted portion, so that the inserted portion and the inserted portion are fixed relatively, in an immovable state, and the top plate and the second-stage transmission mechanism are also fixed relatively.

Fig. 3B shows a cross-sectional view along line A-A in fig. 3A. In fig. 3B, when the insertion portion is inserted into the small opening of the card, the spring is forced to generate an elastic force to the left in the drawing as indicated by an arrow, so that the outer periphery of the pin groove of the insertion portion is closely fitted to the inner periphery of the small opening side of the card, thereby bringing the insertion portion and the inserted portion into a relatively fixed state.

Fig. 3C is a schematic diagram showing a change from the locked state of fig. 3B to the unlocked state, and an arrow in fig. 3C shows a tensile force from the outside. When it is necessary to separate the insertion portion from the inserted portion, the locking portion moves to the maximum compression position of the spring against the spring force by the tensile force transmitted through the tensile force transmission portion described later, and at this time, the large opening of the card moves to a position overlapping with the insertion portion, and the locking of the insertion portion is released because the diameter of the large opening of the card is larger than the outer diameter of the insertion portion, and the insertion portion is in a state that can be separated from the inserted portion.

Fig. 3D is a schematic perspective view showing the top plate attaching/detaching mechanism in a detached state, and shows schematic views of the insertion portions after being detached from the inserted portions.

(modification of the Top plate attaching/detaching mechanism)

Fig. 4A and 4B are schematic views showing a change from the locked state to the unlocked state in a modification of the top plate attaching/detaching mechanism of embodiment 1.

In the present modification, the insertion portion 21 is replaced with the insertion portion 21', the inserted portion 22 is replaced with the inserted portion 22', the block 23 is replaced with the block 23', and the locking portion 24 is replaced with the locking portion 24', as compared with embodiment 1. In this modification, the inserted portion 22' includes a block 23' and a locking portion 24', the locking portion 24' is a locking pin pushed by a spring, and the inserted portion 21' is a pin having a through hole through which the locking pin passes.

The block 23' has a first space S1 extending in the Y direction, which is the second direction, into which the insertion portion 21' is inserted, and a second space S2 extending in the X direction, which is the first direction, into which the locking portion 24' is moved, formed therein, as in embodiment 1, and the locking portion 24' is fitted in the second space S2 of the block 23' and is movable in the X direction in the second space S2.

The locking portion 24' includes a first locking pin 241' having a wider diameter and a second locking pin 242' having a narrower diameter, and as shown in fig. 4A and 4B, the first locking pin 241' and the second locking pin 242' extend in the X direction and are formed in a bar shape, but the present invention is not limited thereto, and may be formed in other shapes. The first locking pin 241 'and the second locking pin 242' are formed by, for example, integrally molding, and the entirety of the first locking pin 241 'and the second locking pin 242' functions as a locking portion. One end of the second locking pin 242 'is connected to the center of one end side of the first locking pin 241', and the other end is connected to a tension transmitting portion, which will be described later, and tension from the outside is transmitted through the tension transmitting portion. A spring is provided between one end of the first bayonet 241 'and one end of the second space S2 at the outer circumference of the second bayonet 242'.

The through hole in the insertion portion 21 'is a through hole penetrating in the X direction, and is located in the movement path of the locking portion 24', i.e., the locking pin, when the insertion portion is inserted into the inserted portion.

In this modification, when the insertion portion is inserted into the internal space of the inserted portion, the locking portion 24' needs to be pulled first to bring the locking portion 24' to the maximum compression position of the spring, and the locking portion 24' needs to be released after the insertion portion is inserted into the inserted portion, so that the locking portion 24' naturally penetrates the through hole in the insertion portion 21', thereby achieving engagement between the insertion portion and the inserted portion.

When it is necessary to separate the insertion portion from the inserted portion, as shown in fig. 4B, a tensile force is transmitted to the locking portion 24 'via a tensile force transmission portion described later, and the locking portion 24' is moved to a maximum compression position of the spring against the elastic force of the spring by the tensile force, and at this time, the locking portion is completely withdrawn from the through hole of the insertion portion, and the insertion portion is in a state detachable from the inserted portion.

The above-described modification is merely an example of a modification of the top plate attaching/detaching mechanism, and other configurations may be adopted as long as the object of the present invention can be achieved. The above-described modification can also achieve the same function as the top plate attaching/detaching mechanism of embodiment 1.

Although fig. 5A to 7 below illustrate an example of the top plate attaching/detaching mechanism of embodiment 1, the top plate attaching/detaching mechanism of the drawings can be similarly applied to the top plate attaching/detaching mechanism of the modification of embodiment 1, and a repetitive description thereof will be omitted.

(synchronous belt supporting device)

Fig. 5A is a perspective view schematically showing a diagnostic bed having a timing belt supporting device, fig. 5B is a sectional view taken along a line A-A of fig. 5A, and fig. 5C is a sectional view taken along a line B-B of fig. 5A.

Fig. 5A is a schematic view of the bed when the top plate 10 and the second stage transmission mechanism 30 are connected via the top plate attaching/detaching mechanism 20, in which only the top plate 10, the top plate attaching/detaching mechanism 20, and the second stage transmission mechanism 30 are shown for convenience, and the first stage transmission mechanism 40, the motor 50, the motor brake device 51, and the like are omitted. In fig. 5A, the diagnostic bed is provided with a timing belt support device 60 in addition to the above-described components.

The inventors have found that when the moving speed or moving direction of the top plate 10 suddenly changes (e.g., stops, starts, turns), the timing belt may deflect and sink due to the self weight of the insertion portion provided on the timing belt, and the upper insertion portion and the inserted portion may not be aligned and mounted. In order to cope with the above situation, a timing belt supporting device 60 is provided below the timing belt to support the timing belt when the timing belt is deflected and submerged.

As shown in fig. 5A, the second-stage transmission mechanism 30 includes a second-stage timing belt 31, the insertion portion 21 is fixed to the second-stage timing belt 31, the timing belt supporting device 60 is fixed below the second-stage timing belt 31, and the timing belt supporting device 60 is selectively provided on a part of the second-stage timing belt in the moving direction of the second-stage timing belt 31, that is, the Y direction. As shown in fig. 5B and 5C, the timing belt supporting device is provided over the entire width of the second stage timing belt in the X direction, which is the cross-sectional direction of the second stage timing belt. As shown in fig. 5C, the insertion portion 21, the second-stage timing belt 31, and the timing belt support device 60 are fixed to each other by, for example, rivet connection.

The timing belt supporting device 60 includes supporting wheels 61, and the supporting wheels 61 of the timing belt balancing device are not in contact with the second stage transmission rail 301 (e.g., a gap of 1mm is designed) in a state where the timing belt is kept straight, and when the timing belt is to be deflected and submerged, the supporting wheels 61 are in contact with the transmission rail 301 below, so that the timing belt is prevented from being deformed, and the insertion portion above the timing belt is prevented from being mounted in alignment with respect to the inserted portion.

(handle and tension transmitting portion)

Fig. 6 is a schematic view showing the handle and the tension transmitting portion, and fig. 6 shows the connection relationship of the respective members in a plan view, but for convenience of illustration, only the outline of the top plate 10 is shown by two-dot chain lines, and the entire top plate 10 is transparent treated to show the structure below the top plate.

As shown in fig. 6, the roof attaching/detaching mechanism further includes a handle 28 (which may also be referred to as an emergency handle or a connection state release handle) and a tension transmission portion that transmits a tension of the handle 28. The handle 28 is used to release the connection between the top plate and the second stage transmission mechanism (i.e., the connection between the insertion portion and the inserted portion) in an emergency, so that the top plate is in a movable state. The tension transmitting portion is used for transmitting tension from the outside to the clamping portion after changing the acting direction of the force.

The handle 28 is fixed to the top plate 10 of the bed, and may be provided at a side end of the top plate that is easy to be operated by a doctor, for example, as shown in fig. 6, and connected to one end of the locking portion by a tension transmitting portion.

The tension transmitting portion is provided between the handle 28 and the locking portion 24, and is provided below the top plate. The tension transmitting portion includes a guide rope 25, a pulley 26 and a labor saving lever 27. The guide rope 25 connects the locking portion 24 and the handle 28, and the pulley 26 changes the direction of the transmission of the acting force so that the handle 28 provided at the side end of the top plate can control the locking portion 24. In addition, the labor-saving lever structure shown in fig. 6 is used between the handle 28 and the guide rope 25, and the operability is improved.

When using the handle of the labor-saving lever structure, the pulling force required for pulling the handle is further reduced, and the physician can easily pull the handle.

As described above, according to the configuration of embodiment 1, the connection and disconnection between the top plate and the transmission mechanism can be easily achieved with a simple structure by the block and the locking portion fixed to the top plate side and the insertion portion fixed to the timing belt, and the problems associated with the electromagnetic clutch can be avoided by using a mechanical structure as the top plate attaching/detaching mechanism.

Further, the deformation of the timing belt can be prevented, and the insertion portion above the timing belt can be prevented from being mounted in alignment with the inserted portion.

In addition, since the top plate dismounting mechanism is arranged between the top plate and the second-stage transmission mechanism, when the top plate is pushed, the driving and transmission related structures such as a motor and a synchronous belt are not attached, so that the manual starting force of the top plate can be obviously reduced, in addition, the pulling force required for pulling the handle in an emergency state is also small, a doctor can easily and quickly correspond to an emergency, and the time for the detected body to be separated from the stand cavity is shortened.

(embodiment 2)

In embodiment 1, the transmission mechanism includes a first-stage transmission mechanism and a second-stage transmission mechanism, the first-stage transmission mechanism is connected to the drive motor, the second-stage transmission mechanism is connected to the top plate, the top plate attaching/detaching mechanism is provided between the top plate and the second-stage transmission mechanism, and after the top plate is separated from the second-stage transmission mechanism by the top plate attaching/detaching mechanism, the manual start force can be reduced to a minimum without accompanying a structure related to driving and transmission of the motor, the timing belt, or the like when the top plate is pushed.

In embodiment 2, as in embodiment 1, the transmission mechanism also includes a first-stage transmission mechanism connected to the drive motor and a second-stage transmission mechanism connected to the top plate, but is different from embodiment 1 in that the top plate attaching/detaching mechanism is provided between the second-stage transmission mechanism and the first-stage transmission mechanism.

Next, the bed structure of embodiment 2 will be described with reference to fig. 7.

The first-stage transmission mechanism 40 is a transmission mechanism in which a motor drives a speed reducer 43 to rotate so as to drive a first-stage timing belt 41 to rotate, and the second-stage transmission mechanism 30 is a transmission mechanism in which a second-stage timing belt 31 is built in a transmission bracket 32.

The second-stage timing belt 31 in the second-stage transmission mechanism 30 is fixedly connected to the upper end of the transmission bracket 42 in the first-stage transmission mechanism, and the lower end of the transmission bracket 32 in the second-stage transmission mechanism 30 is connected to the first-stage timing belt 41 of the first-stage transmission mechanism 40 through the top plate dismounting mechanism 20. The scissors pattern in fig. 7 shows the mounting position of the top plate attaching/detaching mechanism 20. Here, although the transmission bracket 42 is illustrated as a separate structure for convenience of illustration, the transmission bracket 42 may be understood as a portion of the main frame of the examination bed that accommodates the second stage transmission mechanism 30 and the first stage transmission mechanism 40.

In normal operation, the first-stage timing belt 41 of the first-stage transmission mechanism 40 is rotated by the motor, and the first-stage timing belt 41 is fixedly connected to the transmission bracket 32, so that the transmission bracket 32 moves in the horizontal direction together with the first-stage timing belt 41. Meanwhile, since one end of the second-stage timing belt 31 of the second-stage transmission mechanism 30 is fixed to the upper end of the transmission bracket 42 of the first-stage transmission mechanism 40, the second-stage timing belt 31 rotates in order to maintain the relative positional relationship between the second-stage timing belt 31 and the transmission bracket 42 when the transmission bracket 42 is kept stationary and the transmission bracket 32 moves. The other end of the timing belt of the second-stage transmission mechanism 30 is fixedly connected to the top plate 10, and therefore, when the second-stage timing belt 31 rotates relatively, the top plate 10 is driven to extend. When the top plate is retracted, the motor drives the synchronous belt to rotate reversely.

In embodiment 2, in an emergency, the connection between the transmission bracket 32 and the first stage timing belt 41 is disconnected, and when the top plate 10 is manually pulled back to the reset position, the second stage timing belt 31 of the second stage transmission mechanism 30 is rotated, and the transmission bracket 32 of the second stage transmission mechanism 30 is also moved to the reset position.

The advantage of embodiment 2 is that the manual activation force of the bed can be reduced as in embodiment 1. However, in embodiment 2, the manual retraction of the top plate requires the second stage transmission mechanism to be driven, and thus the frictional resistance to be overcome is large as compared with embodiment 1.

Although not shown, the transmission mechanism may be provided with only one stage transmission mechanism, and in this case, for example, the second stage transmission mechanism 30 in fig. 1 is omitted, and the top plate attaching/detaching mechanism is provided between the top plate 10 and the first stage transmission mechanism 40, and the movement of the top plate 10 is driven by the rotation of the first stage timing belt 41 of the first stage transmission mechanism 40.

In this case, the top plate attaching/detaching mechanism may be provided at a position where the manual start force of the bed can be reduced to a large extent.

According to the configuration of embodiment 2, the manual actuation force of the top plate is slightly larger than that of embodiment 1, but the manual actuation force of the top plate can be reduced to some extent. Embodiment 2 also has the advantage of the other configurations of embodiment 1.

Embodiment 3

Embodiment 3 relates to a further modification of the top plate attaching/detaching mechanism, and the top plate attaching/detaching mechanism of embodiment 3 enables bidirectional connection or disconnection of the insertion portion and the inserted portion.

Fig. 8A is a perspective view showing an insertion portion and an inserted portion of the top plate attaching/detaching mechanism according to embodiment 3, and fig. 8B is a cross-sectional view showing the inserted portion in fig. 8A, and is a cross-sectional view taken along a cross-sectional line in fig. 8A.

In embodiment 3, the top plate attaching/detaching mechanism is provided with an insertion portion, a block, and a locking portion as well. In contrast to embodiment 1, the insertion portion 21 is replaced with an insertion portion 21", the inserted portion 22 is replaced with an inserted portion 22", the block 23 is replaced with a block 23", and the locking portion 24 is replaced with a locking portion 24". The locking portion 24 "is 2 blocks pushed by a spring, and the insertion portion 21" is a pin having a pin groove for locking the 2 blocks. In addition, the pin serving as the insertion portion is a two-way pin, and can be inserted and removed in two directions, so that the top plate can be moved in two directions.

As shown in fig. 8A, the insertion portion 21″ has a base fixed to a timing belt of a transmission mechanism, not shown, and a bidirectional pin head extending in the Y direction provided on the base. The front ends of the two-way pin heads are respectively provided with inclined guide surfaces, and pin grooves are respectively provided on the outer peripheral side of the center of the two-way pin heads on the opposite sides in the X direction, and the depths of the pin grooves are set to be matched with the parts of the locking parts 24' protruding from the first space S1.

The inserted portion 22 "includes a block 23" and a locking portion 24 "as in embodiment 1, the block 23" is fixed below a top plate, not shown, a first space S1 extending in the Y direction, which is the second direction into which the insertion portion 21 "is inserted, and a second space S2 extending in the X direction, which is the first direction into which the locking portion 24" is moved, are formed in the block 23", and the locking portion 24" is fitted in the second space S2 of the block 23 "and is movable in the X direction in the second space S2.

The locking portions 24 "(i.e., 2 clips) are provided on both sides of the movement path of the insertion portion 21" so as to face each other in the block 23", the 2 clips of the locking portion 24" partially overlap the first space S1 of the block in the XZ plane, in other words, opposite side ends of the 2 clips are exposed from the first space S1, the 2 clips each have another end fixed to the second space S2 of the block, and the opposite side ends of the 2 clips are arranged so as to be rotatable about the fixed other end. In addition, the 2 clamping blocks are respectively connected with a spring and a guide rope 25 for overcoming the elasticity of the spring. When the insertion portion and the inserted portion are connected, the 2 clamping blocks rotate around the respective rotating shafts under the pushing of the spring force and are respectively clamped in the pin grooves on two sides of the insertion portion 21", and when the insertion portion and the inserted portion are separated, the 2 clamping blocks rotate around the respective rotating shafts under the action of external force conducted through the guide rope, so that the clamping of the insertion portion is released.

As shown in fig. 8B, the built-in guide rope 35 connected to each of the 2 blocks is connected to a grip and a tension transmission portion, not shown, outside the block 23″ via the same built-in pulley 36, and the grip and the tension transmission portion may be configured in the same manner as in embodiment 1, and the description thereof is omitted here.

Fig. 9A and 9B are schematic views showing the insertion portion of the top plate attaching/detaching mechanism being inserted in both directions, and fig. 9C is a side view showing the insertion portion and the inserted portion in a connected state.

As shown in fig. 9A to 9C, the structure of the insertion portion and the inserted portion according to embodiment 3 can move the top plate in either the forward or backward direction, so that various demands in an emergency can be satisfied. Fig. 9A to 9C also show a timing belt supporting device having the same configuration as that of embodiment 1, and a description thereof is omitted here.

Fig. 10A is a sectional view taken along the line A-A in fig. 9C, and fig. 10B is a sectional view taken along the line B-B in fig. 9C.

Fig. 11A and 11B are schematic views showing the force receiving direction and the rotation direction of each member. In fig. 11A, the broken line arrow shows the pulling force direction of the spring against the 2 clips in the normal connection state, and the solid line arrow shows the respective rotation directions of the rotation shaft ends and the opposite ends of the 2 clips under the action of the elastic force. In fig. 11B, the broken line arrow shows the direction of the pulling force from the outside when the handle is pulled, and the solid line arrow shows the respective directions of rotation of the rotating shaft ends and the opposite ends of the 2 cartridges under the pulling force from the outside.

Thus, according to the configuration of embodiment 3, the same effects as those of embodiments 1 and 2 can be achieved. In addition, according to the configuration of embodiment 3, it is possible to realize bidirectional attachment and detachment of the top plate to and from the transmission mechanism, and to manually push the subject placed on the top plate into the cavity of the gantry with a minimum force for inspection when the motor fails and the top plate cannot be driven to move horizontally, thereby improving the flexibility of the apparatus. In addition, when the top plate is withdrawn from the cavity, if an object is clamped at the lower side of the withdrawal direction of the top plate, the top plate can be released in the opposite direction, and the clamped object is taken out and then withdrawn from the top plate, so that the flexibility of operation is improved.

The various structures of the diagnostic bed described above can be applied to a medical device having a diagnostic bed, which may be any one of an MR device, a CT device, and a PET device.

While the present invention has been described with reference to several embodiments and modifications thereof, these embodiments are merely examples and are not intended to limit the scope of the present invention. These novel embodiments can be implemented in various other modes, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Description of the reference numerals

Top plate 10

Top plate dismounting mechanism 20

Insertion portions 21, 21'

Base 211

Protrusion 212

Inserted portions 22, 22'

Blocks 23, 23'

Engagement portions 24, 24'

Guide rope 25

Pulley 26

Built-in guide rope 35

Built-in pulley 36

Labor-saving lever 27

Handle 28

First clamping plate 241

Second clamping plate 242

First bayonet 241'

First bayonet 242'

First space S1

Second space S2

Second stage transmission mechanism 30

Second stage timing belt 31

First stage timing belt 41

Drive brackets 32, 42

First stage drive mechanism 40, 40'

Motor 50

Motor braking device 51

Synchronous belt supporting device 60

Support wheel 61

Transmission guide 301

Claims (19)

1. A diagnostic bed is provided with:

a top plate;

a driving motor for providing a driving force for horizontally moving the top plate;

a transmission mechanism for transmitting the driving force of the driving motor to the top plate so as to horizontally move the top plate; and

the top plate dismounting mechanism comprises an inserted part and an inserting part, wherein the inserted part is arranged on one side of the top plate side and the transmission mechanism side, the inserting part is arranged on the other side of the top plate side and the transmission mechanism side, and the connection or separation of the top plate and the transmission mechanism is realized by connecting or separating the inserting part and the inserted part.

2. The diagnostic bed according to claim 1,

the inserted portion is provided on the top plate side, and is configured by a block fixed to the top plate and having a space formed therein, and a locking portion fitted in the space of the block and movable in a first direction with respect to the block to lock the inserted portion,

the insertion part is arranged at the side of the transmission mechanism and is fixed on the transmission mechanism,

the insertion portion is inserted into the inserted portion in a second direction.

3. The diagnostic bed according to claim 2,

a first space extending along the second direction for the insertion part to insert and a second space extending along the first direction for the locking part to move are formed in the block body,

the locking portion is fitted in the second space of the block body and movable in the second space in the first direction.

4. The diagnostic bed according to claim 2,

the clamping part is a clamping plate pushed by a spring,

the insertion portion is a pin.

5. The diagnostic bed according to claim 2,

the clamping part is a clamping pin pushed by a spring,

the insertion portion is a pin having a through hole through which the bayonet is passed.

6. The diagnostic bed according to claim 2,

the clamping part is provided with 2 clamping blocks pushed by springs,

the insertion part is a pin with a pin groove for the 2 clamping blocks to be clamped.

7. The diagnostic bed according to claim 6,

the pin is a two-way pin,

the top plate attaching/detaching mechanism is capable of performing bidirectional connection or disconnection between the insertion portion and the inserted portion.

8. The diagnostic bed according to claim 6,

the 2 clamping blocks are oppositely arranged at two sides of the moving passage of the insertion part in the block body, and are respectively connected with the springs and can rotate around different rotating shafts.

9. The diagnostic bed according to claim 2, 4 to 8,

the top plate dismounting mechanism is also provided with a handle,

the handle is fixed to the top plate and connected to the locking portion, and when the handle is pulled, the locking portion moves to release the locking of the insertion portion.

10. The diagnostic bed according to claim 9,

the top plate dismounting mechanism is also provided with a tension transmission part arranged between the handle and the clamping part,

the tension transmission part comprises a guide rope, a pulley and a labor-saving lever.

11. The diagnostic bed according to any one of claim 4 to 8,

When the insertion portion is connected to the inserted portion, the locking portion of the inserted portion locks the insertion portion by the elastic force of a spring.

12. The diagnostic bed according to claim 10,

when the insertion portion is separated from the inserted portion, the locking portion moves against the elastic force of the spring by the tensile force transmitted through the tensile force transmission portion, and releases the locking of the insertion portion.

13. The diagnostic bed according to claim 1,

the transmission mechanism comprises a synchronous belt and a transmission mechanism,

the insertion portion is fixed to the timing belt,

the top plate dismounting mechanism is further provided with a synchronous belt supporting device, wherein the synchronous belt supporting device is fixed below the synchronous belt and supports the synchronous belt when the synchronous belt deflects and sinks.

14. The diagnostic bed according to claim 13,

the synchronous belt supporting device is provided with supporting wheels, the synchronous belt is not contacted with the lower transmission guide rail when the synchronous belt is not deflected and sunk, and the synchronous belt is contacted with the lower transmission guide rail when the synchronous belt is deflected and sunk.

15. The diagnostic bed according to claim 1,

the transmission mechanism comprises a first-stage transmission mechanism and a second-stage transmission mechanism,

The first-stage transmission mechanism is connected with the driving motor, the second-stage transmission mechanism is connected with the top plate,

the top plate dismounting mechanism is arranged between the top plate and the second-stage transmission mechanism.

16. The diagnostic bed according to claim 1,

the transmission mechanism comprises a first-stage transmission mechanism and a second-stage transmission mechanism,

the first-stage transmission mechanism is connected with the driving motor, the second-stage transmission mechanism is connected with the top plate,

the top plate dismounting mechanism is arranged between the second-stage transmission mechanism and the first-stage transmission mechanism.

17. The diagnostic bed according to claim 1,

the transmission mechanism is a primary transmission mechanism,

the top plate dismounting mechanism is arranged between the top plate and the primary transmission mechanism.

18. A medical device provided with a diagnostic bed according to any one of claims 1 to 17.

19. The medical device of claim 18,

the medical device is any one of an MR device, a CT device, and a PET device.