CN201055544Y - Controllable electric hydraulic piston pump for blood pump - Google Patents
Controllable electric hydraulic piston pump for blood pump Download PDFInfo
- Publication number
- CN201055544Y CN201055544Y CNU2007200725139U CN200720072513U CN201055544Y CN 201055544 Y CN201055544 Y CN 201055544Y CN U2007200725139 U CNU2007200725139 U CN U2007200725139U CN 200720072513 U CN200720072513 U CN 200720072513U CN 201055544 Y CN201055544 Y CN 201055544Y
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- piston
- blood pump
- plunger shaft
- pump
- blood
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Abstract
The utility model discloses a controllable electric hydraulic piston pump used for a blood pump, which relates to the technical field of medical apparatus. The technical problem of a controllable hydraulic pump is to be solved. The hydraulic piston pump consists of three parts of a hydraulic pressure, a driving and a controlling. The hydraulic pressure part comprises a piston cavity, a piston which is arranged in the piston cavity, a piston cavity mouth which is arranged on the top of the piston cavity and a hydraulic pressure pipeline which is covered on the piston cavity mouth and is used for output. The piston cavity, the hydraulic pressure pipeline and the blood pump are filled with liquid. The driving part comprises a stepper motor, a crankshaft which is arranged on the shaft of the stepper motor and a connecting rod which is pivoted with the crankshaft. The other end of the connecting rod is pivoted with the piston. The controlling part comprises a computer control unit which is used for controlling the stepper motor according to a stated operational parameter, an operation keyboard and a display screen. The control terminal of the computer control unit is connected with the control terminal of the stepper motor. The utility model is characterized in that the operation is convenient; the noise is small; a flow regulation, a pulsation number and compression ratio selection can be carried out according to different patients.
Description
Technical field
This utility model relates to medical device technology, particularly relates to a kind of technology of controlled electric hydaulic piston pump of the extracorporeal circulation of blood blood pump that is used to the type of beating.
Background technology
Because the development of various heart diseases progressively develops into heart failure, finally enter whole latter stage of heart failure and death.With the heart failure condition is example, although the progress of Medical Technology in postcardiac surgery, still has patient can not break away from extracorporeal circulation.Ventricular assist device (VAD), promptly artificial blood pump can be saved patient's life.Pulsation type blood pump and non-pulsation type blood pump are arranged is the advection blood pump to common used blood pump in the present clinical extracorporeal circulation.At short notice, it is little to the dabbling influence of body with non-blood flow of beating to beat, but when long-time auxiliary, the effect of pulsatile flow obviously is better than non-pulsatile flow, and this is because the former meets the physiology perfusion, more helps the recovery of tissue organ function and keeps.According to driving method, blood pump can be divided into air-driven type and power type again, and pneumatic is the most frequently used driving method.The patent that China national Department of Intellectual Property successively discloses the external pulsate pump of several hearts from solved blood circulation in varying degrees, the problem of aspect such as the driving of beating, blood filtration and/or anti-tampon, but exist pneumatic blood pump to have only the blood pump body of blood supply and do not have pneumatic device, more there is not control device, and the specificity of motorized motions is strong excessively, can not be as the control power set of other blood pumps.With left heart auxiliary blood pump (notification number 2178532) is example:
1) have only the blood pump body of blood supply and do not have pneumatic device with the pulsation blood pump existence of pneumatic power, more do not have control device, can not be as complete blood pump system work.Exist air machinery excessive simultaneously, be unfavorable for the mobile use of equipment; And the bigger problem of aerodynamic noise;
2) do not have control device, duty that can not the regulated at will blood pump.The demonstration of the status data when failing blood pump work is provided is unfavorable for real time monitoring; Easy to operate, noise is little
3) complicated operation uses inconvenience.
The utility model content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of easy to operate, stable, the succinct noise of system is little, the controlled electric hydaulic piston pump of can carry out Flow-rate adjustment at different patients, the blood pump of beat number of times and compression ratio selection being used.
In order to solve the problems of the technologies described above, the controlled electric hydaulic piston pump that a kind of blood pump provided by the utility model is used is characterized in that, is made up of hydraulic part, drive part, control section; The conduit under fluid pressure that is communicated with plunger shaft that hydraulic part comprises plunger shaft, places the piston of plunger shaft, is located at the vertical plunger shaft mouth of plunger shaft, is with on the plunger shaft mouth, the other end of conduit under fluid pressure are used for being communicated with the QI KOU (pressure mouth) of blood pump; Plunger shaft and conduit under fluid pressure full of liquid (fluid) in the enclosed space of blood pump air chamber; The connecting rod that drive part comprises motor, is located at the bent axle on the step motor shaft, described bent axle articulates, the other end of connecting rod is articulated in described piston; Control section comprises the computer control that is used for according to the running parameter of setting (angle of rotation, round trip cycle and shuttle speed are poor) motor being controlled, be connected computer control can adjust kinematic parameter (decrement in real time, the rate of beating and compression ratio) operation keyboard and display screen, the control signal end of computer control is connected with described Stepping Motor Control signal end; The kinematic parameter that computer control is set makes motor by the decrement of setting, and the rate of beating and compression ratio carry out work.Computer can be accepted number of times and the selection that extrudes blood flow of beating in real time by display screen and operation keyboard.
Further, the liquid (fluid) that is full of in described plunger shaft and the conduit under fluid pressure space is saline fluid.
Further, described computer control is the industrial computer controller.
Further, computing module, conversion work parameter that described computer control is provided with the interconnective input module that is used for importing (decrement, the amount of beating, compression ratio) kinematic parameter, calculate (angle of rotation, round trip cycle and shuttle speed are poor) running parameter of motor by kinematic parameter are the umber of pulse of control step motor and the control module of pulse frequency, described input module attended operation keyboard, described control module connects the control signal end of computer control.
The controlled electric hydaulic piston pump that the blood pump that utilizes this utility model to provide is used, owing to adopt computer control control step motor-driven piston to make the diastole that blood pump can not stop and the structure of contraction, make the medical worker both can monitor immediately and in the blood circulation process, can also be as required to decrement, the rate of beating and compression ratio are adjusted in real time; When having revised decrement, kinematic parameters such as the rate of beating and compression ratio, computer control is just by the new kinematic parameter control signal new to sending of motor, make motor regulate control rotating speed of motor and rotational angle automatically by amended angle of rotation and positive and negative cycle turnover and speed difference, guarantee to produce new decrement, the rate of beating and compression ratio reach therapeutic effect.
Requirements such as simulation heartthrob formula blood pump needs decrement when work, the rate of beating and compression ratio, and different patients' pathology different needs has different decrements, the rate of beating and compression ratio.This utility model is exactly can produce different angles of rotation and positive and negative cycle turnover and speed difference to different decrements, the rate of beating and compression ratio as calculated after the machine computing to come the control step motor to rotate, realize different decrement, the rate of beating and compression ratio by the crankshaft-and-connecting-rod driven plunger again, guarantee sanguimotor needs in the human body; Therefore this utility model rotates different angles of rotation and promotes piston pump with speed difference positive and negative cycle turnover with motor and makes blood pump produce different decrement, the rate of beating and compression ratio.The medical worker can be provided with different decrements, the amount of beating and the compression ratio of blood pump at different patients by the operation interface operation.The utlity model has stablely, system is succinct, friendly interface, advantage such as easy to use.
Description of drawings
Fig. 1 is the structural representation of the controlled electric hydaulic piston pump of this utility model embodiment;
Fig. 2 is the control procedure sketch map of the controlled electric hydaulic piston pump of this utility model embodiment computer control.
The specific embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to this utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
As shown in Figure 1, the controlled electric hydaulic piston pump that a kind of blood pump that this utility model embodiment is provided is used, form by hydraulic part, drive part, control section, the conduit under fluid pressure that is communicated with plunger shaft 10 that hydraulic part comprises plunger shaft 2, places the piston 1 of plunger shaft 2, is located at plunger shaft 2 vertical plunger shaft mouths 9, is with on plunger shaft mouth 9, the other end of conduit under fluid pressure 10 can be connected with the QI KOU (pressure mouth) of blood pump; Plunger shaft 2 and conduit under fluid pressure 10 are full of saline fluid in the air chamber enclosed space of blood pump; Drive part comprises motor 5, be located at the bent axle 4 on 5 of the motors, the connecting rod 3 that described bent axle 4 articulates, and the other end of connecting rod 3 is articulated in piston 1; Control section comprises the industrial computer controller, connects the display screen 7 and the operation keyboard 8 of industrial computer, industrial computer 6 controllers are provided with interconnective input module, computing module, control module, input module attended operation keyboard 8, the control signal port lines of the control module of industrial computer 6 controllers links to each other with the control signal wire to motor 5, industrial computer sends control signal to motor 5 according to the kinematic parameter of setting, make motor 5 by decrement, the rate of beating and the compression ratio work set.Industrial computer 6 controllers can be accepted number of times and the selection (adjustment) that extrudes blood flow of beating in real time by display screen 7 and operation keyboard 8.
As schematically shown in Figure 2, the control procedure of this utility model industrial computer controller: start-up control program on industrial computer 6 controllers: 1) input (motion) parameter, require in input module, to import kinematic parameters such as decrement, the amount of beating and compression ratio according to treatment; 2), kinematic parameter is calculated the running parameters such as angle of rotation, round trip cycle and shuttle speed difference of motor at the computing module of controller to the computing of (motion) parameter; 3) the conversion work parameter is the umber of pulse and the pulse frequency of control step motor, and umber of pulse of being rotated by angle of rotation, round trip cycle and the conversion of shuttle speed difference running parameter and output motor by control module and impulse speed are given drive circuit and sent the Stepping Motor Control signal; 4) drive stepping motor, motor are rotated with certain angle and speed under signal controlling, provide the decrement that needs, the outputting power of the rate of beating and compression ratio; When needs to decrement, the rate of beating and compression ratio are adjusted in real time, then stop to send control signal, by operation keyboard 8 and display screen 7, reset kinematic parameter to control sequence, industrial computer 6 just by new to sending of the motor again control signal of new kinematic parameter, makes motor by amended decrement, and the rate of beating and compression ratio are regulated rotating speed and rotational angle outputting power automatically.Then stop control sequence as finishing.
The Stepping Motor Control signal end is connected on the control signal port of industrial computer, after the operation of the program on the industrial computer controller, operator are provided with kinematic parameter by keyboard and display screen, the industrial computer controller according to the kinematic parameter that is provided with by sequential operation blood pump with required decrement, kinematic parameters such as the rate of beating and compression ratio change into the angle of rotation of motor rotation and positive and negative cycle turnover and speed difference by control module output to the Stepping Motor Control signal, motor is turned round by certain angle of rotation and positive and negative cycle turnover and speed difference; When operator have revised kinematic parameter, industrial computer is just by new angle of rotation and positive and negative cycle turnover and the speed difference of newly-installed kinematic parameter computing output, and send new control signal with this, make motor with new angle of rotation and positive and negative cycle turnover and speed difference running, make blood pump with required decrement, the rate of beating and compression ratio work.
The work process of this utility model embodiment is as follows: the two ends of conduit under fluid pressure 10 link to each other with plunger shaft mouth 9 with the QI KOU (pressure mouth) of blood pump respectively, fill with saline fluid in plunger shaft 2 and conduit under fluid pressure 10 in the air chamber enclosed space of blood pump again; Set per minute haematodocha beat number of times and per minute flow (1 liter～6 liters of per minutes) by operation keyboard 8 and display screen 7 to industrial computer 6, on industrial computer 6, start operation, the control sequence of industrial computer 6 internal controller just sends the signal of control motor 5 motions according to decrement, compression ratio and the amount of beating set, motor 5 drives piston 1 by bent axle 4 and connecting rod 3 again and moves back and forth; Since from plunger shaft 2 through conduit under fluid pressure 10 full of liquid normal saline to the enclosed volume of blood pump housing, the reciprocating motion of piston 1 is constantly shunk and diastole the haematodocha of blood pump, when piston 1 from plunger shaft 2 tops when bent axle 4 moves back to the drawing liquid body, liquid is back in the plunger shaft 2 through conduit under fluid pressure 10 in the blood pump housing, in the blood pump housing, cause negative pressure to make blood chamber (capsule) diastole, make that the blood in the heart flows in the blood chamber through advancing blood vessel.Move when extruding liquid to plunger shaft 2 tops from bent axle 4 at piston 1, liquid just makes the blood chamber shrink in conduit under fluid pressure 10 flows to the blood pump housing, produces systolic pressure, makes the blood in the blood chamber pump into arteries through going out blood vessel; Finish the blood circulation of a heartbeat; Piston 1 constantly moves back and forth according to the parameter of setting under the motor 5 by industrial computer 6 controls drives like this, makes diastole and the contraction that does not stop the intravital blood of blood pump shell chamber to produce diastolic pressure and systolic pressure, and auxiliary sanguimotor power is provided.In the therapeutic process, the doctor can adjust treatment decrement and compression ratio in real time according to patient status and reaction.After treatment finished, control sequence out of service, motor 5 just stopped operating on industrial computer 6, and blood just no longer is subjected to the compression and the diastole of blood pump.
Claims (3)
1. the controlled electric hydaulic piston pump that blood pump is used is characterized in that, is made up of hydraulic part, drive part, control section; The conduit under fluid pressure that is communicated with plunger shaft that hydraulic part comprises plunger shaft, places the piston of plunger shaft, is located at the vertical plunger shaft mouth of plunger shaft, is with on the plunger shaft mouth, the other end of conduit under fluid pressure are used for being communicated with the QI KOU of blood pump; Plunger shaft and conduit under fluid pressure full of liquid in the enclosed space of blood pump air chamber; The connecting rod that drive part comprises motor, is located at the bent axle on the step motor shaft, described bent axle articulates, the other end of connecting rod is articulated in described piston; Control section comprises and is used for the computer control of motor being controlled according to the running parameter of setting, operation keyboard and the display screen that can adjust kinematic parameter in real time that connects computer control that the control signal end of computer control is connected with described Stepping Motor Control signal end.
2. the controlled electric hydaulic piston pump that blood pump according to claim 1 is used is characterized in that the liquid that is full of in described plunger shaft and the conduit under fluid pressure space is saline fluid.
3. the controlled electric hydaulic piston pump that blood pump according to claim 1 is used is characterized in that described computer control is the industrial computer controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200725139U CN201055544Y (en) | 2007-07-17 | 2007-07-17 | Controllable electric hydraulic piston pump for blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200725139U CN201055544Y (en) | 2007-07-17 | 2007-07-17 | Controllable electric hydraulic piston pump for blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201055544Y true CN201055544Y (en) | 2008-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200725139U Expired - Fee Related CN201055544Y (en) | 2007-07-17 | 2007-07-17 | Controllable electric hydraulic piston pump for blood pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201055544Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033032A (en) * | 2016-07-08 | 2016-10-19 | 中国计量大学 | Simulating chamber for simulating blood circulation in vitro and implementing method thereof |
| CN112331051A (en) * | 2020-12-11 | 2021-02-05 | 广东科学中心 | Interactive presentation device of artificial heart model |
-
2007
- 2007-07-17 CN CNU2007200725139U patent/CN201055544Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033032A (en) * | 2016-07-08 | 2016-10-19 | 中国计量大学 | Simulating chamber for simulating blood circulation in vitro and implementing method thereof |
| CN112331051A (en) * | 2020-12-11 | 2021-02-05 | 广东科学中心 | Interactive presentation device of artificial heart model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20130717 |