CN1468592A - Movable digitally controlled hydraulic extracorporeal heart pressing machine - Google Patents
Movable digitally controlled hydraulic extracorporeal heart pressing machine Download PDFInfo
- Publication number
- CN1468592A CN1468592A CNA031431240A CN03143124A CN1468592A CN 1468592 A CN1468592 A CN 1468592A CN A031431240 A CNA031431240 A CN A031431240A CN 03143124 A CN03143124 A CN 03143124A CN 1468592 A CN1468592 A CN 1468592A
- Authority
- CN
- China
- Prior art keywords
- push
- key
- pushing
- hydraulic cylinder
- press head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Percussion Or Vibration Massage (AREA)
Abstract
The movable digitally controlled hydraulic extracorporeal heart pressing machine includes one oil pump driving three single-piston rod cylinders and the three piston rods are connected with castor, pressing frame and pressing head separately. The MCU sends out commands according to preset program and based on the keys in the display panel and the position sensors to control the on-off of the hydraulic system, the elevation of the castor, the height, frequency, duty cycle and depth of the pressing head, to regulate the pressing speed of the pressing head via the regulating valve and control the pressing strength via the overflow valve. During the pressing, the parameters may be adjusted.
Description
Affiliated technical field
The present invention relates to a kind of medical apparatus and instruments, be used for cardiac arrest patient's rescue.
Background technology
Cardiac arrest should rescue immediately once making a definite diagnosis, and sets up effective blood circulation, is difficult to successfully otherwise recover, and will produce irreversible damage in 6～8 minutes if cerebral tissue interrupts blood supply.At present, artificial external cardiac compression is generally adopted in cardiac arrest patient's rescue, make thoracic wall sink 4～5 centimeters by certain frequency, its advantage is fast and convenient, but because the proficiency level of operator's operation differs, it is uncertain to push effect; Complication such as fracture of rib appear easily; Operator's physical demands is excessive, and fatiguability is difficult to the lasting effect that guarantees to push; When deadly infectious disease man-hours such as rescue SARS, the infected probability of operator heightens.And the cardiac compression apparatus, although existing at present multiple design, portable often, its press head easily is shifted, the support shakiness can't guarantee to push effect; Locate firmly, then excessively heavy, during installation fee, can not reach the purpose of quick rescue; And have to occupy space, patient front excessive, what have needs manual operation; Thereby all can not get practical application, fail to be listed in " medical apparatus and instruments classified catalogue " by State Food and Drug Administration.
Summary of the invention
In order to make external cardiac compression effective and rapid, stable lasting, avoid the generation of complication such as fracture of rib, reduce the medical worker by the infectious probability of deadly infectious disease, the invention provides a kind of hydraulicdriven external cardiac compression machine of movable numerically-controlled digital display that can just can come into operation in the time several seconds kinds.
The technical solution adopted for the present invention to solve the technical problems is: this machine is to adopt microprocessor (MCU) to control, utilize the electromechanical integrated product of hydraulic transmission principle; An oil pump drags three single-piston-rod hydraulic cylinders; Adorn a universal wheel hydraulic cylinder (universal cylinder) below fuselage, its piston rod connects universal wheel vehicle frame (gimbal), is convenient to machine and moves and the press head centralized positioning; Adorn one in a side of fuselage and push frame lifting hydraulic cylinder (moving frame cylinder), its piston rod with push frame and link to each other, be used for the press head height and locate; Push hydraulic cylinder (by cylinder pressure) and be contained in an end of pushing the frame cross bar, press head is connected on the piston rod by cylinder pressure; The control display floater is housed above the fuselage, MCU is by pre-set programs, send instruction according to the control button of display floater and sensor signal and drive relay and solenoid directional control valve work, so the height of the lifting of the start-stop of control motor and hydraulic system, universal wheel, press head, compression frequency, when pushing than, according to pressing depth; Flow speed control valve scalable press head presses down speed; The maximum pressing force of overflow valve may command press head; In the process of pushing, can regulate parameter; Compression frequency, demonstration in real time when pushing than on display screen.
This movable numerically-controlled hydraulic pressure external cardiac compression machine is mainly by hydraulic system, navigation system, constitute by pressing system, control system and display system.
Hydraulic system: form by one group of dynamical element, three group actor spares (single-piston-rod hydraulic cylinder) and control corresponding element and auxiliary element etc., the motor drives oil pump, 3 3-position 4-way O type solenoid directional control valves by the hydraulic manifold block interface respectively with universal cylinder, moving frame cylinder, link to each other by the upper and lower cavity of cylinder pressure, MCU sends the power supply state of instruction control electromagnetic switch valve coil and then controls the motion of corresponding hydraulic cylinder piston, as universal cylinder solenoid directional control valve (universal valve) YA
1During energising, the oil-feed of universal cylinder cavity of resorption rises universal wheel, as universal valve YA
2During energising, the oil-feed of universal cylinder epicoele descends universal wheel; As moving frame cylinder solenoid directional control valve (moving frame valve) YA
3During energising, moving frame cylinder cavity of resorption oil-feed is pushed frame and is raise, as moving frame valve YA
4During energising, moving frame cylinder epicoele oil-feed is pushed frame and is descended; When pressing cylinder pressure solenoid directional control valve (push valve) YA
5During energising, press the oil-feed of cylinder pressure epicoele, press head presses down, as push valve YA
6During energising, press the oil-feed of cylinder pressure cavity of resorption, press head is upwards replied.Flow speed control valve enters fluid flow by the cylinder pressure epicoele by adjusting, and then reaches and regulate the effect that press head presses down speed; The press head speed of pressing down equals flow divided by by cylinder pressure epicoele piston area, can draw according to flow rate calculation.The pressing force of press head is the decision of thoracic wall resilience force by load, and the overflow valve then maximum pressing force of may command press head is realized overload protection; Because the pressure loss and return oil pressure, the pressure that Pressure gauge shows and the product of piston area are not equal to the pressing force of press head to thoracic wall, and the pairing press head of pressure gauge reading can obtain by actual measurement the pressing force of thoracic wall.The pairing press head of flow presses down the knob limit that speed and the pairing pressing force of Pressure gauge are marked on valve.
Navigation system: by gimbal with push on the piston rod that frame is connected corresponding hydraulic cylinder and constitute.Gimbal is connected on the universal cylinder piston rod below the fuselage, and 4 universal wheels are contained on 4 angles of gimbal, as universal valve YA
2During energising, the oil-feed of universal cylinder epicoele, piston moves down, and drives gimbal and descends, and after universal wheel landed, fuselage rising under-chassis was liftoff, since the supporting role of hydraulic control one-way valve, YA
2After the outage spool was got back to meta, it is liftoff for a long time that under-chassis still keeps, and promotes fuselage and can make it to move freely, and can easily press head be moved on to suitable position, patient's breastbone the place ahead; As universal valve YA
1During energising, the oil-feed of universal cylinder cavity of resorption moves on the piston, drives on the gimbal to move, and fuselage descends, and under-chassis lands, and machine is pushed Shi Buhui and shaken.Push on the piston rod that frame is connected the moving frame cylinder that is installed on fuselage one side, pushing frame is made of piston rod cover, cross bar, slide bar, sliding sleeve, reinforcing connecting rod etc., fastening nut is fixed on the piston rod cover upper end of moving frame cylinder piston rod, cross bar is connected in piston rod and puts, and an end of cross bar stretches out and links to each other by cylinder pressure, and the other end links to each other with slide bar, jack rod sleeve is in sliding sleeve, sliding sleeve is contained in the moving frame cylinder offside of fuselage, and reinforced pole links to each other cross bar with piston rod cover, slide bar, as moving frame valve YA
3During energising, moving frame cylinder cavity of resorption oil-feed, piston rises, and drives to push the height that frame rises to setting, infrared position sensor SQ
3Make MCU send instruction, YA
3The outage spool is got back to meta, and piston stops to move; As moving frame valve YA
4During energising, moving frame cylinder epicoele oil-feed, piston descends, drives to push frame decline, after press head touches thoracic wall, pick off SQ
4Make MCU send instruction, YA
4Outage, spool resets rapidly, and piston stops to move, because the supporting role of hydraulic control one-way valve, frame can remain on this height for a long time and the accurate location of finishing press head for piston and pushing of being attached thereto.
By pressing system: be connected on the piston rod by cylinder pressure by press head and constitute, be connected in by cylinder pressure and push on the cross bar that frame one end stretches out.As push valve YA
5During energising, press the oil-feed of cylinder pressure epicoele, piston descends, and drives press head and descends, arrive set according to pressing depth the time, infrared position sensor SQ
6Making MCU send instruction allows valve core reset, piston stop to move; As push valve YA
6During energising, press the oil-feed of cylinder pressure cavity of resorption, piston rises, and drives press head and resets, and resets when finishing infrared position sensor SQ
5Making MCU send instruction allows valve core reset, piston stop to move; Because the existence of piston rod, press head has the feature that resets rapidly.
Control system: MCU is by pre-set programs, send instruction control relay and solenoid directional control valve work according to control button of display floater and sensor signal, so the height of the lifting of the running of the start-stop of control motor, hydraulic system, universal wheel, press head, compression frequency, when pushing than, according to pressing depth.13 buttons are housed in control on the display floater altogether, are respectively: start key, closing key, universal wheel lifting key, universal wheel put down key, push frame rising key, push frame lifting stop key, push frame decline key, push the program start button, push the program stop key, frequency raises key, the frequency downconverts key, when pushing than raising key, comparing down key when pushing.Position sensor has 7, SQ
1, SQ
2, SQ
3, SQ
5, SQ
6Be infrared position sensor, SQ
4, SQ
7Be mechanical trip switch, SQ
1, SQ
2Be used for the relative position of perception universal wheel and under-chassis, work as SQ
1Perceive after under-chassis lands, impel YA
1Outage, YA
4Energising, SQ
2Perceive and make YA after universal wheel lands
2Outage, SQ
1, SQ
2Be contained in the under-chassis medial surface, shared block is contained on the gimbal; SQ
3Perceive and push frame and reach on the height in limited time, impel YA
3Outage, SQ
3Be contained in and push on the frame sliding sleeve limit, draw a block guide rod, SQ from slide bar
3Block is clipped on the block guide rod, slidably; SQ
4Perceive press head when touching thoracic wall, impel YA
4Outage is also opened the program, SQ of pushing
4Be contained in the lower end of a thin hollow hard tube, its spring contact exposes from the end opening of pipe, lead passes from die, on press head, bore the freely through hole of a hollow hard tube energy, adorn a pipe box along hole week above the press head, shorter slightly than hollow hard tube, pipe box upper end dress one stroke switch block, block moves up and down with press head, is positioned at SQ when static
5The top, flat SQ
5The time, corresponding press head lower plane SQ
4The minimum point of contact, this point is scale of depth 0mm position, block can be by SQ
5, SQ
6, SQ
7Perception, pipe box overcoat one collar, the collar is fixed on the side by cylinder pressure, slides and stops press head to rotate in order to hollow hard tube, and the side by cylinder pressure is fixed in hollow hard tube upper end, and the lower end that makes hollow hard tube is equal below the press head of original position, allows SQ
4Contact be exposed at press head below, SQ like this
4With the position relative fixed of pressing cylinder pressure; SQ
5Perceive press head and reply when putting in place, impel YA
6Outage, SQ
5Be fixed on 0mm place by cylinder pressure side scale of depth; SQ
7Compare SQ
6Low 5mm, both connect together, and form a slide block, are contained in by in the lateral chute of cylinder pressure, and one handle is arranged on the slide block, pin handle slide block is slided up and down, and decontrol handle, and sliding block spring makes it to be fixed in the chute SQ with the suitable degree of depth
6, SQ
7Perceive the cardiac compression degree of depth when putting in place, impel YA
5Outage, SQ
7At SQ
6Play the dual fail-safe effect when malfunctioning.Send corresponding output control instruction by key input signal after MCU handles according to pre-set programs: by the start key, machine is opened, motor starting, YA
3Energising; Press closing key, the outage shutdown; Press the universal wheel lifting key, YA
1Energising; Put down key by universal wheel, YA
2Energising; By pushing frame rising key, YA
3Energising; By pushing frame decline key, YA
4Energising is by pushing frame lifting stop key, YA
3, YA
4Outage; By pushing the program start button, open the program, YA of pushing
5The oil-feed of cylinder pressure epicoele is pressed in energising, and piston moves down, and press head moves down together with pipe box thereupon, and the travel switch block is crossed SQ from original position
5The 0mm point, SQ
4Contact is reduced in the press head pore, and thoracic wall begins to be pressed down, when block by SQ
6During perception, YA
5Outage, piston stops to move, and pushes to reach appropriate depth, at this moment SQ
4Be positioned at pipe box, subsequently YA
6The energising, press the oil-feed of cylinder pressure cavity of resorption, move on the piston, the thoracic wall resilience, when block by SQ
5During perception, YA
6Outage, piston stops to move, and thoracic wall resets fully, at this moment, SQ
4Contact is still ensconced in the press head pore, subsequently, and YA
5Again the energising, piston moves down again, so go round and begin again, with the acquiescence frequency, ratio carries out automatic external cardiac compression when pushing; By pushing program stop key, YA
5Outage, YA
6Energising moves on the piston, and the travel switch block is crossed SQ
5The 0mm point, move on to original position in the continuation, YA
6Outage finishes the program of pushing, at this moment SQ
4Contact be exposed at again press head below; By frequency raise key, frequency downconverts key, when pushing than raise key, when pushing than down key, make correspondent frequency, when pushing than 1 unit of change, as pin then change continuously, until bound, unclamp on the relevant parameter that then is parked in this moment midway; Frequency f unit time/minute, default setting 80, the upper limit 120, lower limit 60; When pushing than the % of α unit, default setting 50, the upper limit 60, lower limit 40; Be meant that than α the cycle of pressing down accounts for the percentage of time in whole cycle when pushing, establish total period T, press down period T
1, reply period T
2, when pushing than α=T
1/ T, T
1From YA
5The energising press head presses down the beginning, contains the stop period after according to pressing depth putting in place, until YA
6Switch on moment T
2From YA
6Energising beginning press head last time, contain press head and be returned to stop period after 0, until YA of following one-period
5Switch on moment.
Display system: on the display screen of control display floater, compression frequency (three figure places), show in real time than (two figure places) when pushing; Electric motor state, performed stage of pushing program show with display lamp.
Beneficial effect of the present invention is mainly reflected in following several respects: the one, and the electronics numerical control, simple to operate, flexibly and fast, manually press the start key during standing-by state operation, promoting machine makes the press head location suitable, press the universal wheel lifting key, machine just carries out automatic external cardiac compression by the fast operating conditions that enters of pre-set programs, can not stop over the rescue to patient; The 2nd, intuitive display can be regulated parameter in the process of pushing, by the arrow key of control on the display floater can regulate the frequency of pushing easily, ratio when pushing, rotary knob is regulated and is pushed intensity, press head presses down speed, infrared position sensor SQ slides
6Scalable according to pressing depth reaches the best effect of pushing; The 3rd, have determined curative effect, stablize persistent advantage with manually pushing to compare; The 4th, hydraulic drive, press head presses down at the uniform velocity, steadily, do not have impact, is difficult for taking place complication such as fracture of rib; The 5th, press head is small and exquisite, and it is little to take up space in patient's front, helps the expansion of other rescue work; The 6th, can allow the doctor free hand to, take further emergency measures, in order to the success rate that improves recovery; The 7th, rescue the deadly infectious disease man-hour, reduced the infected probability of medical worker.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the overview sketch map of this movable numerically-controlled hydraulic pressure external cardiac compression machine.
Fig. 2 is the operative sensor location map.
Fig. 3 is a control display floater sketch map.
Fig. 4 is hydraulic circuit figure.
Fig. 5 is alternating current circuit and DC control circuit schematic flow sheet.
1. fuselages among the figure, 2. under-chassis, 3. universal cylinder, 4. universal cylinder piston, 5. universal cylinder piston rod, 6. gimbal, 7. universal wheel, 8. oil pipe, 9. oil pipe, 11. oil pipe, 12. oil pipes, 13. soft oil pipes, 14. oil pipe, 15. oil pipes, 16. soft oil pipes, 17. moving frame cylinder, 18. moving frame cylinder pistons, 19. moving frame cylinder piston rods, 21. push frame, 22. piston rod covers, 23. fastening nuts, 24. cross bar, 25. slide bars, 26. sliding sleeves, 27. the block guide rod, 28. reinforce connecting rod, and 29. press cylinder pressure, 31. press the cylinder pressure piston, 32. push cylinder piston rod, 33. press heads, 34. hollow hard tube, 35. pipe boxes, 36. collars, 37. the press head pore, 38. hydraulic manifold blocks, 39. overflow valve knobs, 41. the flow speed control valve knob, 42. Pressure gauges, 43. flow meters, 44. the control display floater, 45. fuel tank draining valves, 46. blocks, 47. block, 48. blocks, 49. chutes, 51. slide block, 52. scale of depths, 53. universal valves, 54. moving frame valve, 55. push valve, 56. fuel tanks, 57. filter, 58. oil pumps, 59. check valves, 61. overflow valve, 62. flow speed control valves, 63. hydraulic control one-way valves, 64. hydraulic control one-way valve, 65. control oil circuits, 66. control oil circuits, 67. the direct current electric device, 68. motor display lamps, 63. programs of pushing are carried out display lamp, 70. push program tranquillization display lamp, 71. press head presses down display lamp, 72. press heads are replied display lamp, 73. start keys, 74. closing key, 75. the universal wheel lifting key, 76. universal wheels put down key, and 77. push frame rising key, 78. push frame lifting stop key, 79. push frame decline key, 80. push the program start button, 81. push the program stop key, 82. frequency raises key, 83. the frequency downconverts key, 84. when pushing than raising key, 85. compare down key when pushing, 86. display screen, SQ
1. infrared position sensor, SQ
2. infrared position sensor, SQ
3. infrared position sensor, SQ
4. mechanical trip switch, SQ
5. infrared position sensor, SQ
6. infrared position sensor, SQ
7. mechanical trip switch, M. motor, YA
1. universal valve coil, YA
2. universal valve coil, YA
3. moving frame valve coil, YA
4. moving frame valve coil, YA
5. push valve coil, YA
6. push valve coil, KM. relay ,～220V. single phase alternating current power supply, Fu
1. fuse, Fu
2. fuse, Ui. D.C. regulated power supply input voltage, DC Power. D.C. regulated power supply, Uo. D.C. regulated power supply output voltage ,+. the direct current anode,-. the direct current negative electrode, Keyboard. control panel button, Sensors. sensor groups, MCU. microprocessor, OUT. control output interface, the Display. display system.
The specific embodiment
In order to make machine can drop into rescue when needed rapidly, should make machine be in standing-by state at ordinary times.The three-terminal polarized plus plug of soft sheathed conductor is inserted single-phase three sockets, conductor length can guarantee that machine moves freely in the rescue place, travel switch block (47) is set highly, make the press head (33) when pushing frame (21) highest order higher slightly than the height sum of sick bed and fat people's thoracic wall anteroposterior diameter, moving slider (51) makes pick off (SQ
6) corresponding to the 45mm place of scale of depth (52), by the start key (73) on the control display floater (44), microprocessor (MCU) gets relay (KM) coil, relay (KM) contact closure, motor (M) rotates, and drives oil pump (58) running, and fluid sucks oil pump (58) from fuel tank (56) through filter (57), extrude through check valve (59), microprocessor (MCU) makes frame valve (54) coil (YA simultaneously
3), the spool displacement, fluid enters moving frame cylinder (17) cavity of resorption through moving frame valve (54), oil pipe (11), because the one-way check of hydraulic control one-way valve (64), the oil of moving frame cylinder (17) epicoele goes out not go, moving frame cylinder piston (18) can not move, control oil circuit (66) pressure rises rapidly, hydraulic control one-way valve (64) conducting, moving frame cylinder epicoele oil moves on the moving frame cylinder piston (18) through oil pipe (12), hydraulic control one-way valve (64), moving frame valve (54) oil sump tank (56), drives to push frame (21) rising, block (47) rises thereupon, when block (47) by pick off (SQ
3) perception, microprocessor (MCU) makes frame valve coil (YA
3) dead electricity, spool is got back to meta, and piston (18) stops to move, and pushes frame (21) to the upper limit of setting, and the oil pressure of moving frame valve (54) front oil circuit raises, and when surpassing the setting value of overflow valve (61), fluid is through overflow valve (61) oil sump tank (56).Put down key (76) by universal wheel, microprocessor (MCU) makes universal valve (53) coil (YA
2), the spool displacement, fluid arrives universal cylinder (3) epicoele through universal valve (53), hydraulic control one-way valve (63), oil pipe (9), through oil pipe (8), universal valve (53) oil sump tank (56), universal cylinder piston (4) moves down from universal cylinder (3) cavity of resorption in oil return, drives gimbal (6) and universal wheel (7) and descends, universal wheel (7) lands, fuselage (1) rises, and under-chassis (2) is liftoff, when block (46) by pick off (SQ
2) during perception, microprocessor (MCU) makes universal valve (53) coil (YA
2) dead electricity, spool is got back to meta, and piston (4) stops to move, and fluid is again through overflow valve (61) oil sump tank (56).Under the liftoff state of under-chassis (2), the weight of fuselage (1) makes the fluid of universal cylinder (3) epicoele that the possibility of leaking from universal valve (53) through oil pipe (9) be arranged, fuselage (1) is slowly descended, under-chassis (2) and then lands, hydraulic control one-way valve (63) has cut off the leak path of fluid through universal valve (53), guarantees that under-chassis (2) can be in liftoff state for a long time.By pushing program start button (80), microprocessor (MCU) compares the program, push valve (55) coil (YA of pushing of opening with the compression frequency of acquiescence, when pushing
5), spool moves, fluid arrives through flow speed control valve (62), flow meter (43), push valve (55), soft oil pipe (13), oil pipe (14) and presses cylinder pressure (29) epicoele, oil return is from getting back to fuel tank (56) by cylinder pressure (29) cavity of resorption through oil pipe (15), soft oil pipe (16), push valve (55), piston (31) moves down, promote press head (33) and move down, block (48) begins to move down from original position with press head (33), block (48) sensor (SQ that flates pass
5) during scale of depth (52) the 0mm place at place, pick off (SQ
4) contact slide into press head pore (37) lining, piston (31) continues to move down, block (48) when the 45mm place by pick off (SQ
6) perception, microprocessor (MCU) makes push valve (55) coil (YA
5) dead electricity, spool is got back to meta, and fluid is got back to fuel tank (56) through overflow valve (61), and piston (31), press head (33) stop to move, and microprocessor (MCU) makes push valve (55) coil (YA subsequently
6), spool moves, fluid arrives through push valve (55), soft oil pipe (16), oil pipe (15) and presses cylinder pressure (29) cavity of resorption, oil return is from pressing cylinder pressure (29) epicoele through oil pipe (14), soft oil pipe (13), push valve (55) oil sump tank (56), piston moves on (31), press head (33) upwards resets, and block moves on (48), as pick off (SQ
5) when perceiving block (48), microprocessor (MCU) makes push valve (55) coil (YA
6) dead electricity, spool is got back to meta, and fluid is through overflow valve (61) oil sump tank (56), and piston (31) stops to move, and press head (33) resets fully, at this moment pick off (SQ
4) contact still in press head pore (37) lining, microprocessor (MCU) makes push valve (55) coil (YA again subsequently
5) must be electric, make press head (33) do moving down of a new round, so go round and begin again, carry out the program of pushing, display screen (86) compares α when showing compression frequency f in real time and pushing.Adjust the pretightning force of overflow valve (61), make it corresponding, regulate flow speed control valve (62), make corresponding flow press down period T at 45 kilograms of places of the maximum downforce of press head (33)
1Finish before the end and push stroke, excessive fluid is through overflow valve (61) oil sump tank (56).By pushing program stop key (81), microprocessor (MCU) makes push valve (55) coil (YA
5) dead electricity, coil (YA
6) must be electric, piston moves on (31), and press head moves on (33), and block (48) moves up and crosses the 0mm place to original position, pick off (SQ
4) contact be exposed at again press head (33) below, microprocessor (MCU) makes push valve (55) coil (YA
6) dead electricity, spool is got back to meta, and piston stops to move, and pushes EP (end of program).Press closing key (74), microprocessor (MCU) makes relay (KM) coil losing electricity, and relay (KM) contact disconnects, motor (M) shutdown, and oil pump (58) shuts down, and hydraulic system decommissions.At this moment, universal wheel lands, and machine can freely promote, the press head height is suitable, can make press head move to the proper site of patient front neatly, compression frequency, when pushing than having made default setting, the maximum downforce of press head, the speed that presses down all mix up, and this state is exactly a standing-by state.
When standing-by state will come into operation, 3 steps of manually-operated: at first by start key (73), microprocessor (MCU) started motor (M), drives oil pump (58) running, moving frame valve (54) coil (YA
3) because pick off (SQ
3) effect must not the electricity, 3 electromagnetic switch valve cores all are in meta, fluid is through overflow valve (61) oil sump tank (56); Promote machine immediately, make press head (33) be positioned at suitable position, patient front; Press universal wheel lifting key (75) then, microprocessor (MCU) makes universal valve (53) coil (YA
1), spool moves, fluid enters the cavity of resorption of universal cylinder (3) through universal valve (53), oil pipe (8), universal cylinder (3) epicoele fluid can not reflux because of stopping of hydraulic control one-way valve (63), piston (4) temporarily can not move, control oil circuit (65) oil pressure raises, hydraulic control one-way valve (63) conducting, universal cylinder (3) epicoele fluid is through oil pipe (9), hydraulic control one-way valve (63), universal valve (53) oil sump tank (56), piston moves on (4), drives gimbal (6), universal wheel (7) rising, and fuselage (1) descends, under-chassis (2) lands, as pick off (SQ
1) when perceiving block (46), microprocessor (MCU) makes universal valve (53) coil (YA
1) dead electricity, spool is got back to meta, and piston (4), gimbal (6), universal wheel (7) stop to move, and microprocessor (MCU) makes frame valve (54) coil (YA simultaneously
4), spool moves, fluid enters moving frame cylinder (17) epicoele through moving frame valve (54), hydraulic control one-way valve (64), oil pipe (12), driven cylinder of oil return (17) cavity of resorption arrives fuel tank (56) through oil pipe (11), moving frame valve (54), piston (18) moves down, drive is pushed frame (21) and is pressed cylinder pressure (29), press head (33) and descends, when press head (33) when touching thoracic wall by pick off (SQ
4) perception, microprocessor (MCU) makes frame valve (54) coil (YA
4) dead electricity, spool is got back to meta, piston (18) stops to move, and pushes frame (21), stops by cylinder pressure (29), simultaneously microprocessor (MCU) is opened the program of pushing, machine just by the frequency of acquiescence with push the time ratio and carry out automatic external cardiac compression.In the process of pushing, pick off (SQ
4) contact is all the time in press head pore (37) or pipe box (35).Make press head (33) location if promote machine earlier, again by start key (73) and universal wheel lifting key (75), influence slightly postpones to rescue in the time of may accounting for because of motor (M) starting.Push to press frame (21) when pushing on the thoracic wall elastic force, move tendency on the moving frame cylinder piston (18) of pulling has,, guaranteed to push frame (21) and not being shifted of being attached thereto by cylinder pressure (29) because hydraulic control one-way valve (64) has stoped the leakage of fluid through moving frame valve (54).
In the process of pushing as will be to compression frequency, ratio is adjusted when pushing, and raises key (82) by frequency, frequency downconverts key (83) than raising key (84), gets final product than down key (85) when pushing when pushing; As will be to according to pressing depth regulating, sliding slider (51) makes pick off (SQ
5) flat corresponding scale to scale of depth (52); Push knob (39) adjusting that intensity can be used overflow valve (61); The press head speed of pressing down can use the knob (41) of flow speed control valve (62) to regulate.
As the position of pressing cylinder pressure (29) is not high enough, the block (47) that can glide, and by pushing frame rising key (77), microprocessor (MCU) makes frame valve coil (YA
3) must be electric, the coil (YA when its subsequent process and start
3) electric be the same, stop automatically moving when pushing frame (21) to new setting height.As it is too high to press cylinder pressure (29) position, and press head (33) can be by pushing frame decline key (79) when the inconvenience of location, patient front, and microprocessor (MCU) makes frame valve (54) coil (YA
4) electric, spool displacement, moving frame cylinder (17) epicoele oil-feed, moving frame cylinder piston (18) moves down, make push frame (21) decline certain distance after, by pushing frame lifting stop key (78), microprocessor (MCU) makes frame valve (54) coil (YA
4) dead electricity, spool is got back to meta, pushes frame (21) and stops to move, and universal wheel lifting key (75) to good, is pressed then in press head (33) position.
Push end, by pushing program stop key (81), after press head (33) is got back to original position, by pushing frame rising key (77), push frame (21) and rise, press head (33) leaves patient's thoracic wall, stops automatically moving when pushing frame (21) to setting height; Put down key (76) by universal wheel, after universal wheel (7) lands, under-chassis (2) is liftoff, push machine open; Press closing key (74), machine enters standing-by state again.
As in pushing frame (21) uphill process, by pushing frame lifting stop key (78), microprocessor (MCU) makes frame valve (54) coil (YA
3) dead electricity, spool is got back to meta, and piston (18) stops to move, and pushes frame (21) and stops, and when pressing start key (73) again after the shutdown, microprocessor (MCU) can make frame valve (54) coil (YA when opening motor (M)
3) must be electric, push the height that frame (21) is elevated to setting automatically.
As under under-chassis (2) lands state, will use the time, must put down key (76) by universal wheel more earlier by start key (73), after landing, universal wheel (7) promotes machine immediately, make press head (33) arrive correct position surely, press universal wheel lifting key (75) at last, machine operates by pre-set programs.
Motor display lamp (68) is bright during motor (M) running; When the program of pushing was carried out, it is bright that the program of pushing is carried out display lamp (69), pushes before the program start and after stopping, it is bright to push program tranquillization display lamp (70); Press down period T
1, it is bright that press head presses down display lamp (71); Reply period T
2, it is bright that press head is replied display lamp (72).
Claims (9)
1. an external cardiac compression machine is characterized in that: hydraulic drive, movable type, digital-control digital-display.
2. external cardiac compression machine according to claim 1, it is characterized in that: adopt hydraulic transmission principle, hydraulic system drags 3 single-piston-rod hydraulic cylinders with 1 oil pump, dress universal wheel hydraulic cylinder below the fuselage, fuselage one side dress is pushed the frame hydraulic cylinder, push hydraulic cylinder and be contained in and push on the frame cross bar, 3 hydraulic cylinder fluid flow to and controlled by solenoid directional control valve separately.
3. universal wheel hydraulic cylinder according to claim 2, it is characterized in that: be contained in below the fuselage, piston rod links to each other with the universal wheel vehicle frame, and hydraulic cylinder epicoele oil-feed piston moves down, and the drive universal wheel stretches out and lands, under-chassis is liftoff, machine can freely be promoted, and moves on the hydraulic cylinder cavity of resorption oil-feed piston, drives universal wheel and rises, under-chassis lands, and fuselage is stable.
4. the frame hydraulic cylinder of pushing according to claim 2 is characterized in that: be contained in fuselage one side, piston rod with push frame and link to each other, move on the hydraulic cylinder cavity of resorption oil-feed piston, drive and push frame and raise, hydraulic cylinder epicoele oil-feed piston moves down, and drives to push frame and descend.
5. the hydraulic cylinder of pushing according to claim 2, it is characterized in that: piston rod links to each other with press head, and hydraulic cylinder epicoele oil-feed piston moves down, and drives press head and moves down, and moves on the hydraulic cylinder cavity of resorption oil-feed piston, drives on the press head and moves.
6. external cardiac compression machine according to claim 1, it is characterized in that: adopt electronics numerical control digital display technology, MCU sends the work that motor and solenoid directional control valve are controlled in instruction by pre-set programs according to the button of control display floater and the input signal of pick off, push the program default frequency 80 times/minute, than 50%, push in the process and can regulate when pushing parameter.
7. control display floater according to claim 6, it is characterized in that: 13 input buttons, start key, closing key, universal wheel lifting key, universal wheel put down key, push frame rising key, push frame lifting stop key, push frame decline key, push the program start button, push the program stop key, frequency raises key, the frequency downconverts key, when pushing than raising key, comparing down key when pushing.
8. pick off according to claim 6 is characterized in that: 7 position sensors, SQ
1, SQ
2, SQ
3, SQ
5, SQ
6Be infrared sensor, SQ
4, SQ
7Be mechanical trip switch, SQ
3Stop location is adjustable, SQ
4Fix with pushing the hydraulic cylinder relative position, its contact is exposed at below the press head SQ when static
5Be fixed on and push the lateral scale of depth 0mm of hydraulic cylinder place, corresponding press head lower plane SQ
4The minimum point of contact, SQ
7Compare SQ
6Low 5mm, both form a slide block and are contained in and push in the lateral chute of hydraulic cylinder, and the position is adjustable, SQ
5, SQ
6, SQ
7Common travel switch block of perception, this block links to each other with press head, is positioned at SQ when static
5The top is as itself and SQ
5When equal, SQ
4Contact slide in the press head pore.
9. electronics numerical control digital display technology according to claim 6 is characterized in that: compression frequency (three figure places), show in real time on display screen than (two figure places) when pushing, and further show the residing state of pushing with display lamp.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031431240A CN1468592A (en) | 2003-06-11 | 2003-06-11 | Movable digitally controlled hydraulic extracorporeal heart pressing machine |
| CNB2003101042554A CN100396269C (en) | 2003-06-11 | 2003-10-27 | Mobile type numerically controlled hydraulic external heart pressing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031431240A CN1468592A (en) | 2003-06-11 | 2003-06-11 | Movable digitally controlled hydraulic extracorporeal heart pressing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1468592A true CN1468592A (en) | 2004-01-21 |
Family
ID=34155736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031431240A Pending CN1468592A (en) | 2003-06-11 | 2003-06-11 | Movable digitally controlled hydraulic extracorporeal heart pressing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1468592A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788793A (en) * | 2009-08-21 | 2010-07-28 | 河南迈松医用设备制造有限公司 | Cardio-pulmonary resuscitation machine sensing control device featuring accurate regulation according to pressing depth |
| CN104546427A (en) * | 2014-12-11 | 2015-04-29 | 崔言森 | Extracardiac pressing device for patients in serious conditions |
| EP2892495A4 (en) * | 2012-09-06 | 2016-06-01 | Zoll Medical Corp | Method and device for mechanical chest compression with optical alignment |
| CN108245398A (en) * | 2018-01-30 | 2018-07-06 | 王子坤 | A kind of medical bed for assisting carrying out CPR |
| CN108420701A (en) * | 2018-04-09 | 2018-08-21 | 贵州省人民医院 | A kind of first-aid cardiac compression machinery hand |
| CN108697572A (en) * | 2016-01-29 | 2018-10-23 | 首尔大学校产学协力团 | Automatic device for resuscitating heart and pulmones and its control method |
-
2003
- 2003-06-11 CN CNA031431240A patent/CN1468592A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788793A (en) * | 2009-08-21 | 2010-07-28 | 河南迈松医用设备制造有限公司 | Cardio-pulmonary resuscitation machine sensing control device featuring accurate regulation according to pressing depth |
| CN101788793B (en) * | 2009-08-21 | 2013-11-13 | 河南迈松医用设备制造有限公司 | Cardio-pulmonary resuscitation machine sensing control device featuring accurate regulation according to pressing depth |
| EP2892495A4 (en) * | 2012-09-06 | 2016-06-01 | Zoll Medical Corp | Method and device for mechanical chest compression with optical alignment |
| CN104546427A (en) * | 2014-12-11 | 2015-04-29 | 崔言森 | Extracardiac pressing device for patients in serious conditions |
| CN108697572A (en) * | 2016-01-29 | 2018-10-23 | 首尔大学校产学协力团 | Automatic device for resuscitating heart and pulmones and its control method |
| US11071686B2 (en) | 2016-01-29 | 2021-07-27 | Seoul National University R&Db Foundation | Automatic cardiopulmonary resuscitation device and control method therefor |
| CN108245398A (en) * | 2018-01-30 | 2018-07-06 | 王子坤 | A kind of medical bed for assisting carrying out CPR |
| CN108420701A (en) * | 2018-04-09 | 2018-08-21 | 贵州省人民医院 | A kind of first-aid cardiac compression machinery hand |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103046881B (en) | Automatic column moving device for workover | |
| CN1468592A (en) | Movable digitally controlled hydraulic extracorporeal heart pressing machine | |
| US11104548B2 (en) | Mobility aid device for overcoming a level difference | |
| CN111035887B (en) | Intelligent counterweight strength training device and using method thereof | |
| CN107496110A (en) | Household nursing bed and nursing control method | |
| CN105769306B (en) | A kind of obstetrics' sucker midwifery device | |
| CN100396269C (en) | Mobile type numerically controlled hydraulic external heart pressing apparatus | |
| CN212438182U (en) | Device for assisting old people in wearing and taking off trousers | |
| CN201253439Y (en) | Fire engine stabilizer automatic leveling system | |
| CN109331244B (en) | Medical intelligent drainage device | |
| CN103148060B (en) | Step on lift control system and the controlling method of car staircase | |
| CN115531665A (en) | Injection positioning device for endocrine clinic | |
| CN212954090U (en) | Hydraulic lifting stepless speed regulation control system of aerial work platform | |
| CN109331240B (en) | Automatic controller for thoracic drainage | |
| CN2868487Y (en) | Automatic precision hydraulic straightening machine | |
| CN2908859Y (en) | Stroke regulation controller of metering pump | |
| CN2900461Y (en) | Electric lifting system | |
| CN206221424U (en) | Beat type hickory picking machine | |
| CN108852140A (en) | A kind of execution method of both hands deformity boy student urine auxiliary device | |
| CN206458418U (en) | A kind of beam pumping unit stroke self-checking device | |
| CN220917703U (en) | Tooth chair sensing device that descends | |
| CN219900304U (en) | Accessory punching mechanism for electric vehicle production | |
| CN221061135U (en) | Diagnosis and treatment table | |
| CN113960957B (en) | Automatic gate locking device and control system thereof | |
| CN213158190U (en) | Fat extraction device of high adaptability fat suction needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |