JP2011161075A - Leg supporter opening/closing device for obstetric delivery table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of an opening/closing device wherein the circuit structure is complicated because a hydraulic pressure control circuit of a hydraulic cylinder to control the lifting of a delivery table and reclining of a backrest, etc. and a motor control circuit for shutting off the power distribution to a motor by the leg force of a patient are necessary, and wherein the manufacturing cost is high because the mechanism for the opening/closing motions based on the motor control is complicated. <P>SOLUTION: The leg supporter opening/closing device for the obstetric delivery table includes: a pair of rotary links 12 with one ends journaled to a delivery table body side and the other ends to which leg supporters 11 are attached; double-action hydraulic cylinders 13 for the leg supporters set between the rotary link and the delivery table body side; sensors 12a for detecting the amount of rotation of the rotary links; a branched oil pipe for connecting the hydraulic cylinders for the leg supporters with a hydraulic pump OP; one solenoid valve EV attached between the hydraulic pump and the branched point in the oil pipe; and a control circuit OR for shutting off the power distribution to the solenoid valve with the output from the sensors. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support device for opening and closing a leg unit of an obstetric delivery table for performing leg opening with a patient's lower limb placed on a support device when the patient undergoes a medical examination or delivery at the obstetric delivery table.

  As a conventional support device opening / closing device for an obstetrical delivery table, for example, there are inventions described in Japanese Patent Application Laid-Open Nos. 2000-51293 and 2001-29404. In the support device opening and closing device disclosed in the present invention, the drive source is a motor, and the drive force of the motor is rotated in the left-right direction through a rotation link attached to the support device via a gear. The lower limbs of the patient placed on the pedestal attached to the tip of the rotation link are opened and closed.

  By the way, in the above-described opening / closing device, even if a person or an interference object hits between the support base and the newborn cradle attached to the back side of the waist support so that it can be pulled out, If the load greater than the driving force of the motor is not applied, the support leg closes, and even if the patient's posture is unreasonable while opening and closing the support leg during delivery, the patient's leg strength does not stop. There was a problem that the support device continued to open and close, causing pain to the patient.

  As a means for solving the above-described problems, there is an invention disclosed in Japanese Patent Laid-Open No. 2002-248134. The support device opening / closing device disclosed in the present invention stops the leg-opening operation by interrupting the energization of the motor when a load due to the patient's leg force, which is a load greater than a set value, is applied to the motor and the amount of current to the motor increases. That's it.

JP 2000-51293 A JP 2001-29404 A JP 2002-248134 A

  By the way, in the above-described opening / closing device, a hydraulic control circuit for a hydraulic cylinder that controls the raising and lowering of the delivery table, ups and downs of the backrest, and a motor control circuit that cuts off the power to the motor by the patient's leg force are required As a result, the circuit configuration is complicated, and the mechanism for opening and closing operation by motor control is complicated, resulting in high manufacturing costs.

  The present invention is intended to solve the above-mentioned problems, and the object of the present invention is to control the lifting and lowering of the delivery table, the backrest, and the like with a hydraulic cylinder by opening and closing the support legs with a hydraulic pump. As a result, since only a hydraulic control circuit is required as the control circuit, it is an object of the present invention to provide a support / branch switch for a maternity delivery table that can simplify the circuit configuration and reduce the manufacturing cost.

  The obturator opening / closing device of the obstetric delivery table according to the present invention achieves the above-mentioned object, and the means of claim 1 is a pair in which one end is pivotally supported on the delivery table main body side and the other end is attached to the support leg device. Rotating link, a double-acting support cylinder hydraulic cylinder installed between the rotation link and the delivery table body side, a sensor for detecting the rotation amount of the rotation link, and the support apparatus hydraulic pressure A branched oil pipe connecting the cylinder and the hydraulic pump, one electromagnetic valve mounted between the hydraulic pump and the branch point in the oil pipe, and the hydraulic pump and the electromagnetic by output from the sensor A control circuit that cuts off power to the valve, and when the sensor detects that a load is applied to any one of the supporters and the load is applied to the rotating link to which the supporter is attached, Communication with hydraulic pump and solenoid valve Blocked by stopping the supply of oil to the support legs dexterity hydraulic cylinder operation of the pair of pivot link it is characterized by stopping the opening and closing operation of the stopped the support legs unit.

  According to a second aspect of the present invention, in the first aspect, the electromagnetic valve is attached to the branched oil pipe, and a load is applied to any of the supporting legs, and the rotating link to which the supporting legs are attached is attached to the rotating link. When the sensor detects that a load has been applied, a solenoid valve attached to the oil pipe on which the load is applied is closed by the control circuit, and oil is supplied to the hydraulic cylinder for the support gear on the load side. It stops, the operation | movement of a rotation link is stopped, and the opening / closing operation | movement of the support device attached to this rotation link is stopped.

  As described above, the obturator opening / closing device of the obstetrical delivery table of the present invention detects that the load is applied to either of the two support legs and the load is applied to the rotation link to which the support legs are attached. The solenoid valve attached to the hydraulic pump side is closed by the control circuit and the supply of oil to the two support gear cylinders is stopped, so that the operation of the pair of rotating links is stopped and the opening and closing operation of the support device is stopped. Therefore, by controlling the delivery table up and down, backrest, etc. with the hydraulic cylinder, only the hydraulic control circuit is required as the control circuit, so that the circuit configuration is simplified and the manufacturing cost can be reduced.

  Further, when the sensor detects that the electromagnetic valve is attached to the branched oil pipe, a load is applied to any of the support legs, and a load is applied to the rotating link to which the support legs are attached, The solenoid valve attached to the oil pipe on which the load is applied is closed by the control circuit to stop the operation of the rotation link on the side on which the load is applied, and the opening / closing operation of the support base attached to the rotation link is stopped. If there is a problem with one of the patient's leg strengths, stopping the abutment that receives the lower limb with the leg strength will increase the patient's leg angle so that the treatment can be performed. It becomes easy to do. In addition, when a doctor or the like wants to change the open leg angle of only one lower limb of the patient during the operation, the structure is such that the electromagnetic valve connected to each of the above can be operated from the outside. It has an effect of making it easy to perform treatment by freely changing the degree of open leg.

It is a perspective view of the bed state which shows one Example of the support device of the obstetrics delivery table of this invention. It is a side view except the support leg part of FIG. It is a perspective view in the state where the leg was opened. It is a side view of the switchgear part of a support device, and a support device part. It is a top view which shows the opening / closing apparatus of the state which closed the support leg. It is a perspective view in the state where the leg was opened. It is a back view which shows the principal part of the switch device of a support leg. It is a block diagram for controlling a switchgear. It is a flowchart for demonstrating the operation | movement by a block diagram. It is a perspective view of the state which closed the leg device and bent the leg support of the leg device. It is a perspective view of the state which opened the support leg device of FIG. It is the side view which made the leg support of the support leg flat state. It is the oblique side which made the leg support of the support leg the bending state. It is a perspective view which shows the principal part of FIG. It is a perspective view in the state where the canvas was attached to the lower limb support of the support leg. It is a perspective view of the state which mounted the patient's leg in FIG.

Hereinafter, the outline of the obstetric delivery table provided with the support device of the present invention will be described with reference to FIGS.
A is a delivery table used for medical examination and delivery of pregnant women, 1 is a base installed on the floor of obstetrics and gynecology, etc., 2 is a lifting cylinder provided in the box 1a of the base 1 A support base 3 that moves up and down is attached to the support base 2, and a waist support that is tilted by a waist support cylinder (not shown) so that the doctor can easily see the birth canal at the time of delivery or the like. The backrest is undulated by the backrest cylinder 5. The delivery table A may be rotatably attached to the base 1 so as to be in a free state and a locked state.

  Further, the support base 2 is vertically rotated by a desired angle in the longitudinal direction by one longitudinal cylinder 6 provided between the support base 1 and a desired laterally by the two lateral cylinders 7. It is configured to be able to roll over only by an angle, and is configured to be able to tilt the patient in the vertical direction and the horizontal direction according to the state of the treatment. The support base 2, the waist receiving cylinder, the backrest cylinder 5, the vertical rotation cylinder 6, and the horizontal rotation cylinder 7 that are moved up and down by the above-described lifting cylinder are controlled by operating a known foot pedal FP (see FIG. 8). It is possible.

  Further, 8 is a side fence that is detachably attached to both sides of the backrest 4 and protects the upper body of the patient, and 9 is an anger grip gripped when the patient is enthusiastic at the time of delivery.

  Next, the structure of the support device opening / closing device for opening and closing the pair of support devices 11 attached to the support plate 10 attached to the distal end side of the waist support 3 will be described with reference to FIGS.

  The pair of support legs 11 is attached to the tip of a rotation link 12 that is rotatably attached to the support plate 10 in the horizontal direction, and one end is pivotally supported on the support plate 10 at a substantially intermediate position of the rotation link 12. The rod side of the well-known double-action type support leg cylinder 13 is pivotally supported. Accordingly, when oil is supplied to the side where the rod extends into the cylinder of the support leg cylinder 13, the rod is discharged and the two support legs 11 come close to each other, and oil is supplied to the side where the rod in the cylinder contracts. Will be separated.

  The two support leg cylinders 13 branch from one oil pipe extended from a hydraulic pump (not shown) into two parts on the way, and are attached to the ends of the branched oil pipes. At the same time, oil is supplied or drained. Further, a potentiometer 12a, which is one of the sensors S, is attached to the rotation shaft portion of the rotation link 12, and the gear 10a fixed to the support plate 10 is meshed with the rotation shaft of the potentiometer 12a. The resistance value is changed in accordance with the amount of rotation of the link 12. An electromagnetic valve EV (see FIG. 8) is attached between the hydraulic pump OP (see FIG. 8) and the branch point in the oil pipe.

Next, a block diagram for controlling the switchgear shown in FIG. 8 will be described.
The OR is a microprocessor for controlling the hydraulic pump OP and the electromagnetic valve EV by operating a switch for operating the opening and closing of the support 11. A foot pedal FP and a sensor S (potentiometer 12a in the embodiment) are connected to the control circuit OR on the input side. Further, a hydraulic pump OP and a solenoid valve EV are connected to the output side of the control circuit OR.

  The control circuit OR stores a program for executing the operation of the flowchart shown in FIG. 9, the ROM controls the operation of the hydraulic pump OP and the electromagnetic valve EV, and the RAM is stored as necessary. It is configured to control the operation.

  The control circuit OR also includes circuits for controlling the backrest cylinder 5, the waist support cylinder (not shown), the vertical rotation cylinder 6, and the horizontal rotation cylinder 7 for raising and lowering the backrest 4. Yes. Further, the foot pedal FP includes a backrest raising / lowering control switch, a waist support control switch, a vertical rotation control switch, and a rollover control switch.

Next, the opening / closing operation | movement of the support device 11 is demonstrated with the flowchart of FIG.
As shown in FIGS. 1 and 5, the support device 11 is closed, that is, the oil stays on the side where the rod extends in the support device hydraulic cylinder 13, or as shown in FIGS. The control circuit determines whether or not the switch for opening / closing the pedestal of the foot pedal FP has been operated in a state in which the pedestal 11 is separated, that is, in a state where oil stays on the side where the rod contracts in the fulcrum hydraulic cylinder 13. The OR is monitored (step S1).

  If it is confirmed in this monitoring that the switch for opening and closing the pedestal is operated, the solenoid valve EV is energized to open the hydraulic circuit (step S2) and drive the hydraulic pump OP (step S3).

  When the switch for opening and closing the pedestal is a switch for releasing the pedestal 11, oil is supplied to the side where the rod in the hydraulic cylinder 13 for pedestal contracts, and the rod moves into the cylinder. The rotation link 12 is rotated in a direction in which the left-right direction is separated. Therefore, the left and right supporters 11 are rotated in the separating direction, and when the supporter opening / closing switch is a switch for bringing the supporter 11 close, the side in which the rod in the supporter hydraulic cylinder 13 extends is extended. Since oil is supplied to the cylinder and thereby the rod discharges from the cylinder, the rotation link 12 is rotated in the proximity direction. Therefore, the left and right supporters 11 are rotated in the proximity direction (step S4).

  When the rotation link 12 is rotated in the separating direction or the proximity direction, the resistance value of the potentiometer 12a attached to the rotation link 12 is changed by a constant change amount by meshing with the gear 10a. The amount of change is constantly monitored by the control circuit OP (step S5), and if for some reason, for example, a person or an interfering object hits one of the supporters 11, the rotation speed of the rotation link 12 changes. As a result, the resistance value change amount of the potentiometer 12a becomes different.

  It should be noted that extra oil flows into the other hydraulic support cylinders 13 as much as it is difficult for oil to flow into the hydraulic support cylinders 13 on the side where one person or the object hits one support mechanism 11. When the potentiometer 12a detects the change amount of the resistance value, the control circuit OP stops driving the hydraulic pump OP (step S7) and stops energizing the electromagnetic valve EV (step S8). Accordingly, when the supply of oil to the rotation link 12 to which an external force is applied is stopped, the supply of oil to the rotation link 12 to which no external force is applied after a very short time difference is also stopped. 11 stops at substantially the same separation angle.

  When the potentiometer 12a does not detect a change in the preset resistance value in the monitoring in the step S5, the control circuit OP monitors whether or not the preset resistance value of the potentiometer 12a at the position where the support device is disengaged is reached. (Step S6).

  When the control circuit OP determines in step S6 that the resistance value of the potentiometer 12a has reached the position where the support device is released, the control circuit OP stops driving the hydraulic pump OP (step S7) and energizes the electromagnetic valve EV. Stopping (step S8), the support leg 11 puts the patient's lower limb into an open or closed leg state.

  In the description of the flowchart of FIG. 9 described above, an electromagnetic valve EV for stopping the supply of oil to the hydraulic cylinder 13 for the support leg is provided in the oil pipe between the hydraulic pump and the branch point, and one of the support legs is provided. 11, when the opening / closing operation of both support legs is stopped when an external force is applied, the resistance value of one of the potentiometers 12a is abnormal by attaching the solenoid valve EV to the branch portion of the oil pipe. When changing to, only the solenoid valve EV on the side connected to the hydraulic cylinder 13 for the support mechanism on the side where the abnormality is detected may be stopped.

  By adopting such a configuration, for example, when there is a problem with one leg strength or hip joint of the patient and the leg cannot be opened largely, the rotation link 12 on the side receiving the lower limb with the leg strength or hip joint problem. When the potentiometer 12a detects an abnormality, the energization of the solenoid valve EV attached to the oil pipe side that supplies oil to the cylinder 13 for the support leg that controls the rotation of the rotation link 12 is cut off. Since only the support 11 stops and the other pivot links 12 pivot to the final leg position and stop, the leg angle of the patient becomes larger than in the case of the above-described operation, and therefore the birth canal is easier to see. This makes it easier to perform treatment.

  Further, when a doctor or the like wants to change the open leg angle of only one lower limb of the patient during the operation, a structure that allows the individually connected electromagnetic valves to be operated from the outside, for example, a backrest 4 It is also possible to freely change the degree of open leg of the patient by arranging switches for individually controlling the two electromagnetic valves EV on the side surface of the patient.

  In the above-described embodiment, the case where the rotation abnormality of the rotation link 12 is detected by the change in the resistance value of the potentiometer 12a has been described. However, the pressure generated when the rotation link 12 is rotated is detected instead of the potentiometer 12a. It may be a sensor such as a pressure sensor, a rotary encoder, a tachometer generator, or the like, or a hydraulic pressure sensor that detects the hydraulic pressure in the oil pipe connected to the hydraulic cylinder 13 for each support leg.

Next, a specific configuration of the support leg 11 will be described with reference to FIGS.
A fixed plate 112 is fixed to a support column 111 fixed to the distal end of the rotating link 12 described above. A mounting member 115 for pivotally supporting the footrest 114 for mounting is attached. A cradle 116 extending in the horizontal direction is fixed to the fixing plate 112 on the pipe frame 113 side.

  The pipe frame 113 and the footrest 114 are pivotally supported so as to be opposed to the attachment member 115 and are connected to a facing portion between the pipe frame 113 and the footrest 114 by a connection link 117. In addition, the cylinder side of the gas cylinder 118 is pivotally supported on the hanging piece 115 a suspended from the back surface of the mounting member 115, and the rod side of the gas cylinder 118 is pivotally supported on the tip of the footrest 114. The gas cylinder 118 is provided with a release lever 118a. When the release lever 118a is operated, the rod is discharged from the cylinder and the footrest 114 is rotated counterclockwise in FIGS.

  When the footrest 114 is rotated in the counterclockwise direction, the connecting link 117 is displaced, so that the pipe frame 113 is rotated in the clockwise direction, and the footrest 114 and the pipe frame 113 are in a V-shaped state. . In this V-shaped state, the connecting arm 117 is adjusted so that the pipe frame 113 is in an acute angle state with respect to the footrest 114.

  Reference numeral 119 denotes a lower limb receiving member, which includes a hammock-type inflated shin receiving portion 119a and a sole receiving portion 119b made of a sheet material such as canvas. A small amount of cushion material is inserted into the inflated shin portion 119a so as to be curved when the patient's inflated shin is supported, and the tubular portion 119c for inserting the pipe frame 113 on the back surface side is inserted. Is formed.

  Further, the sole receiving portion 119b is connected to the inflated shin portion 119a via the folding portion 119d, and the above-described footrest is placed with the tubular portion 119c of the inflated shin receiving portion 119a being inserted into the pipe frame 113. It is configured to be placed on the upper surface of the table 114. A cushion material is also inserted into the sole receiving portion 119b.

  The lower limb receiving member 119 is formed by integrating the inflated shin receiving portion 119a and the sole receiving portion 119b, and by inserting the inflating shin receiving portion 119a into the pipe frame 113, the sole receiving portion 119b is provided. It is possible to support the patient's calf shin and toes only by placing them on the footrest 114. Therefore, it is easier than manufacturing the calf shin receiving part 119a and the sole receiving part 119b separately. In addition, although it has an advantage that it can be easily installed on the support device 11, it is not always necessary to integrate it, and the foot support portion 119 b is manufactured separately from the foot rest 114, and the foot support portion 119 b is provided. It may be fixed to the footrest 114 with a string or the like.

  Next, to describe the operation of the support device 11, the patient rides on the delivery table shown in FIG. 1 in a supine state or in a chair with the backrest 4 standing upright. At this time, the support 11 is in the proximity state.

  When a medical checkup or delivery is performed from this state, the support device 11 is brought into the open state so that the patient's foot shown in FIG. In this state, when a doctor or nurse operates the release lever 118 a of the gas cylinder 118, the rod of the gas cylinder 118 is discharged, and the footrest 114 is shifted in the standing direction from the portion pivotally supported by the mounting member 115.

  As the footrest 114 changes, the pipe frame 113 stands up in a direction away from the cradle 116 via the connecting link 117. Then, when the rod of the gas cylinder 118 is discharged to the final position, the standing of the footrest 114 and the pipe frame 113 is maximized and stopped by returning the release lever 118a.

  In this state, the patient's inflated shin is supported by the inflated shin receiving portion 119a of the lower limb receiving member 119 attached to the pipe frame 113, and the sole is placed on the sole receiving portion 119b. .

  By the way, the inflated shin portion of the patient is supported by the inflated shin receiving portion 119a, but the inflated shin receiving portion 119a is a hammock type, so that the inflated shin portion of the patient is supported in a curved state to be inflated. The shin part will sink. Therefore, even if the patient tries to move the inflated shin part, the left and right slip is prevented, so that the patient is always held in a fit state, and examination and delivery procedures can be easily performed. Is.

  It should be noted that the standing angle between the pipe frame 113 and the footrest 114 is set so that the standing angle of the pipe frame 113 is larger than the standing angle of the footrest 114, so that the inflatable shin receiving portion 119 a of the patient's inflatable shin portion. It is possible to improve the holdability by the above, and to hold the patient's inflated shin portion in a fixed state more reliably. Further, the cylindrical portion 119c slides on the pipe frame 113, so that it can cope with the length of the foot due to various patient height differences, and further, the change to the contact portion with the foot due to the tilting operation of the lower limb receiving member 119. To be able to cope with.

  After the patient's examination and delivery are completed, the lower limb support member 119 is brought into a horizontal state by operating the release lever 118a of the gas cylinder 118 and returning the footrest 114 in the horizontal direction, and the support mechanism is opened and closed. The device causes the support 11 to be in close proximity and the patient's foot to be closed.

  When the above-described lower limb receiving member 119 is in a horizontal state, the inflated shin receiving portion 119a of the lower limb receiving member 119 is placed on the pedestal 116, so that the patient's inflated shin is supported by the pedestal 116. Thus, the patient's lower limb is maintained in a horizontal state, and the inflated shin receiving portion 119a is returned to a flat state.

  In the above-described embodiment, the footrest 114 is raised and lowered by the gas cylinder 118. However, instead of the gas cylinder, a hydraulic cylinder or another actuator in which an electric motor and a gear are combined may be used. Good.

11 Supporting device 12 Rotating link 12a Potentiometer (sensor)
13 Hydraulic cylinder for support gear OR Control circuit OP Hydraulic pump EV Solenoid valve

Claims (2)

A pair of rotary links, one end of which is pivotally supported on the delivery table main body and the other end of which is attached to the support base, and a double-acting type hydraulic support for the support legs installed between the rotary link and the delivery table main body side A cylinder, a sensor for detecting a rotation amount of the rotation link, a branched oil pipe connecting the hydraulic cylinder for the support gear and the hydraulic pump, and between the hydraulic pump and the branch point in the oil pipe Comprising one attached solenoid valve, and a control circuit for shutting off the energization of the hydraulic pump and the solenoid valve by the output from the sensor;
When the sensor detects that a load is applied to any of the support legs and a load is applied to the rotary link to which the support equipment is attached, the power supply to the hydraulic pump and the solenoid valve is cut off, A support device opening / closing device for a maternity delivery table, wherein the supply of oil to the hydraulic cylinder is stopped to stop the operation of the pair of rotation links, thereby stopping the opening / closing operation of the support device.   The solenoid valve is attached to the branched oil pipe, and when the sensor detects that a load is applied to any of the support legs and the load is applied to the rotating link to which the support legs are attached, The solenoid valve attached to the added oil pipe is closed by the control circuit, and the supply of oil to the support leg hydraulic cylinder is stopped by applying the load to stop the operation of the rotating link. 2. The support / branch opening / closing device of the obstetrical delivery table according to claim 1, wherein the opening / closing operation of the support / branch attached to the moving link is stopped.

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