CN102580233A - Medical electromagnetic valve with magnetic fluid - Google Patents

Medical electromagnetic valve with magnetic fluid Download PDF

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Publication number
CN102580233A
CN102580233A CN2011100043164A CN201110004316A CN102580233A CN 102580233 A CN102580233 A CN 102580233A CN 2011100043164 A CN2011100043164 A CN 2011100043164A CN 201110004316 A CN201110004316 A CN 201110004316A CN 102580233 A CN102580233 A CN 102580233A
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CN
China
Prior art keywords
magnetic fluid
electromagnetic valve
medical
valve
valve rod
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Granted
Application number
CN2011100043164A
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Chinese (zh)
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CN102580233B (en
Inventor
张毅
孙文辉
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CHENGDU DONGSHENG MACHINERY MANUFACTURING Co Ltd
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CHENGDU DONGSHENG MACHINERY MANUFACTURING Co Ltd
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Priority to CN 201110004316 priority Critical patent/CN102580233B/en
Publication of CN102580233A publication Critical patent/CN102580233A/en
Application granted granted Critical
Publication of CN102580233B publication Critical patent/CN102580233B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a medical electromagnetic valve with magnetic fluid, which comprises an emergency manual push rod, an electromagnetic valve compaction cap, an electromagnetic valve casing, an excitation coil, an electromagnetic stem, a magnetic fluid seal, nanometer magnetic fluid, a floating piston, a return spring, a photoelectric counting rod, cooling magnetic fluid, an electromagnetic shield coating and an antifriction layer. The medical electromagnetic valve with the magnetic fluid is mounted on a plasma separator and used for controlling separation and delivery of plasma, and can also be independently used for controlling opening and closing of a clinical infusion tube. The medical electromagnetic valve overcomes shortcomings that a traditional electromagnetic valve used in an existing plasma machine is high in resource consumption, opening and closing noise is loud, electromagnetic interference to control of a computer is caused, noise influences to patients are also caused, technical content of a structure is low, maintenance and repair are difficult and the like. In addition, the nanometer magnetic fluid replaces pure electrical iron, the medical electromagnetic valve is lighter than the traditional medical electromagnetic valve by 50%, and the medical electromagnetic valve is free of service risks, small in occupied space, convenient in organization of production, extremely low in resource consumption and free of pollution and noise, and belongs to environment-friendly medical equipment.

Description

Magnetic fluid electro-medical magnet valve
Technical field
The invention belongs to green medical equipment field, be used for medical blood separator blood plasma transfer passage control and the control of medical transfusion tube passage, i.e. magnetic fluid electro-medical magnet valve.
Background technology
The mutual rigidity of conventional medical electromagnetic valve iron core and money circle metallic framework attracts to collide, and the fluctuation of impact noise and blood plasma conveying capacity when being prone to form spool self-oscillation and switch produces certain behaviour's sound stimulation and spirit interference to the prescription on individual diagnosis patient.Consume electrical pure iron more, electromagnetic interference is arranged, to defectives such as computer are influential.
Summary of the invention
The purpose of this invention is to provide a kind of many fields of employment, no electromagnetism, magnetic fluid electro-medical magnet valve chemical contamination, low in resources consumption equipment.
In order to achieve the above object, the present invention has adopted following technical scheme;
Organization plan of the present invention comprises; Emergent handspike (1), electromagnetic valve clamping cap (2), electromagnetic valve housing (3), excitation coil (4), electromagnetism valve rod (5), magnetic current sealing (6), nanometer magnetofluid (7), floating piston, back-moving spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13).The magnetic fluid electro-medical magnet valve of being formed thus (hereinafter to be referred as the magnetic fluid valve) is installed in armarium---on the blood separator, be used for the control that separating plasma is carried.This magnetic fluid valve is vital parts on the blood separator.Also can independently be used for open and close control to the clinical transfusion pipe.
Control scheme of the present invention comprises; (a) adopted cooling magnetic fluid (7) to replace the electric magnet metallic framework and played cooling effect coil (4).(b) adopt high molecular floating piston (8), nanometer magnetofluid (7), the flexible interlock mode of electromagnetism valve rod (5) to replace the traditional electrical Magnet spool and the mutual rigid collision attraction of the money circle metallic framework kind of drive, spool impact noise when having solved spool self-oscillation and open and close.Avoided that the prescription on individual diagnosis patient is produced certain behaviour's sound and disturbed the electromagnetic interference that reaches the control computer.(c) externally the computer switch power supply is controlled down; Excitation coil (4) energising is saturated, cooling magnetic fluid (11) intelligence type of becoming solid mutually; Form magnetic pole and discharge micro-heat, under this action of a magnetic field, force nanometer magnetofluid (7) to move downward compression reseting spring (9), drive electromagnetism valve rod (5) simultaneously and move downward; And then make electromagnetism valve rod (5) separate the i.e. released conducting of blood plasma carrier pipe with electromagnetic valve clamping cap (2).Meanwhile, along with nanometer magnetofluid moves downward to certain position, it is intelligently by liquid phase-change type of being solid and from locking in this position.When the external computer Switching Power Supply was broken off, excitation coil (4) dead electricity, this change of perception of cooling magnetic fluid (11) also became liquid intelligently mutually, absorb certain heat (being cooler environment) simultaneously.Nanometer magnetofluid this moment (7) also this variation of perception becomes liquid immediately intelligently mutually; Under action of reset spring, floating piston (8), nanometer magnetofluid (7), electromagnetic valve valve rod (5) integral body move up to valve rod (5) and compress only (being that the blood plasma carrier pipe is closed) with the electromagnetic valve clamping cap.So far this magnetic fluid valve is accomplished a cycle of operation.(d) through vacuum antifriction layer (13) slip and seal friction coefficient between electromagnetism valve rod (5), floating piston (8), magnetic current sealing (6) and the electromagnetic valve housing (3) are reduced greatly.Thereby poppet is used and is received a mandate significantly.(e) answer attitude " O " type circle through magnetic current sealing (6).
Usefulness, make nanometer magnetofluid (7) to the infiltration of outside by intelligent magnetic fluid demarcate, restrained, and become colloidal state " O " type circle intelligently mutually.
Description of drawings
Fig. 1 magnetic fluid electro-medical magnet valve sketch map;
Fig. 2 magnetic fluid electro-medical magnet valve structure chart;
Among the figure; Emergent handspike (1), electromagnetic valve clamping cap (2), electromagnetic valve housing (3), excitation coil (4), electromagnetism valve rod (5), magnetic current sealing (6), nanometer magnetofluid (7), floating piston, back-moving spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13).
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified:
As shown in Figure 1.The blood plasma delivery hose passes between electromagnetic valve clamping cap (2) cavity surface and electromagnetism valve rod (5) end face, and it is the control object of this magnetic fluid valve.Emergent handspike (1) is that emergency opening blood plasma carrier pipe is used when the burst power cut-off incident, and it is installed on the top of electromagnetic valve clamping cap (2)., the pressurized strut formed of electromagnetic valve housing (3), excitation coil (4), electromagnetism valve rod (5), magnetic current sealing (6), nanometer magnetofluid (7), floating piston, back-moving spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13) is installed on the electromagnetic valve clamping cap (2).This magnetic fluid electro-medical magnet valve mainly is installed on the medical blood separator, and controlled by computer.As shown in Figure 2, (a) adopted cooling magnetic fluid (7) to replace the electric magnet metallic framework and played cooling effect coil (4).(b) adopt high molecular floating piston (8), nanometer magnetofluid (7), the flexible interlock mode of electromagnetism valve rod (5) to replace the traditional electrical Magnet spool and the mutual rigid collision attraction of the money circle metallic framework kind of drive, spool impact noise when having solved spool self-oscillation and switch.Avoided that the prescription on individual diagnosis patient is produced certain behaviour's sound and disturbed the electromagnetic interference that reaches the control computer.(c) externally the computer switch power supply is controlled down; Excitation coil (4) energising is saturated, cooling magnetic fluid (11) type of becoming solid mutually intelligently; Form magnetic pole and discharge micro-heat, under this action of a magnetic field, force nanometer magnetofluid (7) to move downward and compression reseting spring (9), drive electromagnetism valve rod (5) simultaneously and move downward; And then make electromagnetism valve rod (5) separate the i.e. released conducting of blood plasma carrier pipe with electromagnetic valve clamping cap (2).Meanwhile, along with nanometer magnetofluid moves downward to certain position, it is intelligently by liquid phase-change type of being solid and from locking in this position.When the external computer Switching Power Supply was broken off, excitation coil (4) dead electricity, this change of perception of cooling magnetic fluid (11) also became liquid intelligently mutually, absorb certain heat (being cooler environment) simultaneously.Nanometer magnetofluid this moment (7) also this variation of perception becomes liquid immediately intelligently mutually; Under action of reset spring, floating piston (8), nanometer magnetofluid (7), electromagnetic valve valve rod (5) integral body move up to valve rod (5) and end (being that the blood plasma carrier pipe is closed) with electromagnetic valve clamping cap seal face.So far this magnetic fluid valve is accomplished a cycle of operation.(d) express passway that makes slip and seal friction coefficient between electromagnetism valve rod (5), floating piston (8), magnetic current sealing (6) and the electromagnetic valve housing (3) reduce and ensure magnetic fluid valve open and close greatly through vacuum antifriction layer (13).Thereby poppet is used and is received a mandate and dynamic responding speed significantly.(e) through the application of magnetic current sealing (6), make nanometer magnetofluid (7) to the infiltration of outside by intelligent magnetic fluid demarcate, restrained, and become colloidal state " 0 " type circle intelligently mutually.

Claims (2)

1. magnetic fluid electro-medical magnet valve; Comprise emergent handspike (1), electromagnetic valve clamping cap (2), electromagnetic valve housing (3), excitation coil (4), electromagnetism valve rod (5), magnet fluid sealing (6), nanometer magnetofluid (7), floating piston (8), back-moving spring (9), photoelectric counting bar (10), cooling magnetic fluid (11), coating for EMI shielding (12), antifriction layer (13); The magnetic fluid electro-medical magnet valve of being formed thus (hereinafter to be referred as the magnetic fluid valve); Be installed in armarium---on the blood separator; Be used for the control that separating plasma is carried, this magnetic fluid valve is vital parts on the blood separator, also can independently be used for the open and close control to the clinical transfusion pipe.
2. magnetic fluid electro-medical magnet valve according to claim 1, its characteristics are; (a) adopted cooling magnetic fluid (7) to replace the electric magnet metallic framework and played cooling effect coil (4); (b) adopt high molecular floating piston (8), nanometer magnetofluid (7), the flexible interlock mode of electromagnetism valve rod (5) to replace traditional electrical Magnet spool and the mutual rigidity attraction of money circle metallic framework mode; Spool impact noise when having solved spool self-oscillation and open and close; Avoided the prescription on individual diagnosis patient is produced certain behaviour's sound influence; (c) externally computer open and close power supply is controlled down; Excitation coil (4) energising is saturated, cooling magnetic fluid (11) intelligence mutually type of becoming solid form magnetic pole and discharge micro-heat; Under this action of a magnetic field, force nanometer magnetofluid (7) to move downward compression reseting spring (9) and drive electromagnetism valve rod (5) simultaneously and move downward and then make electromagnetism valve rod (5) to separate with electromagnetic valve clamping cap (2), i.e. the released conducting of blood plasma carrier pipe, meanwhile; Along with moving downward to certain position, nanometer magnetofluid make it intelligently by liquid phase-change type of being solid and from locking in this position; When the external computer Switching Power Supply was broken off, excitation coil (4) dead electricity, cooling this change of magnetic fluid (11) perception also became liquid intelligently mutually and absorb certain heat (being cooler environment) simultaneously, and nanometer magnetofluid this moment (7) also this variation of perception becomes liquid immediately intelligently mutually; Under action of reset spring; Floating piston (8), nanometer magnetofluid (7), electromagnetic valve valve rod (5) integral body move up to valve rod (5) and compress only (being that the blood plasma carrier pipe is closed) with the electromagnetic valve clamping cap, and so far this magnetic fluid valve is accomplished a cycle of operation, (d) through vacuum antifriction layer (13) slip and seal friction coefficient between electromagnetism valve rod (5), floating piston (8), magnetic current sealing (6) and the electromagnetic valve housing (3) are reduced greatly; Thereby poppet is used and is received a mandate significantly; (e) through the application of magnetic current sealing (6), make nanometer magnetofluid (7) to external penetration demarcated, restrained, and become colloidal state " O " type circle intelligently mutually.
CN 201110004316 2011-01-11 2011-01-11 Medical electromagnetic valve with magnetic fluid Expired - Fee Related CN102580233B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110004316 CN102580233B (en) 2011-01-11 2011-01-11 Medical electromagnetic valve with magnetic fluid

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Application Number Priority Date Filing Date Title
CN 201110004316 CN102580233B (en) 2011-01-11 2011-01-11 Medical electromagnetic valve with magnetic fluid

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CN102580233A true CN102580233A (en) 2012-07-18
CN102580233B CN102580233B (en) 2013-08-28

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103961756A (en) * 2013-01-29 2014-08-06 中国人民解放军总医院 Simple-type bladder irrigating control device
CN104595265A (en) * 2013-10-30 2015-05-06 北京精密机电控制设备研究所 Electromagnetic valve of floating piston type structure
CN110671535A (en) * 2019-10-18 2020-01-10 深圳市魔方卫星科技有限公司 High-temperature-resistant electromagnetic valve
US10543018B2 (en) 2015-05-15 2020-01-28 Covidien Lp Surgical access device
CN114247024A (en) * 2021-11-16 2022-03-29 河北谊安奥美医疗设备有限公司 Porous evaporation device
CN114247024B (en) * 2021-11-16 2024-03-19 河北谊安奥美医疗设备有限公司 Porous evaporation device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2569815Y (en) * 2002-01-15 2003-09-03 张同合 Stopping flow control valve for respirator
US20050070850A1 (en) * 2003-09-30 2005-03-31 Albrecht Thomas E. Low-profile, recessed stop-cock valve for trocar assembly
CN101310790A (en) * 2007-06-28 2008-11-26 北京谊安医疗系统股份有限公司 Multifunctional safety valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2569815Y (en) * 2002-01-15 2003-09-03 张同合 Stopping flow control valve for respirator
US20050070850A1 (en) * 2003-09-30 2005-03-31 Albrecht Thomas E. Low-profile, recessed stop-cock valve for trocar assembly
CN101310790A (en) * 2007-06-28 2008-11-26 北京谊安医疗系统股份有限公司 Multifunctional safety valve

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103961756A (en) * 2013-01-29 2014-08-06 中国人民解放军总医院 Simple-type bladder irrigating control device
CN103961756B (en) * 2013-01-29 2016-04-13 中国人民解放军总医院 Simple type bladder irrigation control device
CN104595265A (en) * 2013-10-30 2015-05-06 北京精密机电控制设备研究所 Electromagnetic valve of floating piston type structure
US10543018B2 (en) 2015-05-15 2020-01-28 Covidien Lp Surgical access device
US11832849B2 (en) 2015-05-15 2023-12-05 Covidien Lp Surgical access device
CN110671535A (en) * 2019-10-18 2020-01-10 深圳市魔方卫星科技有限公司 High-temperature-resistant electromagnetic valve
CN110671535B (en) * 2019-10-18 2021-02-05 重庆开拓卫星科技有限公司 High-temperature-resistant electromagnetic valve
CN114247024A (en) * 2021-11-16 2022-03-29 河北谊安奥美医疗设备有限公司 Porous evaporation device
CN114247024B (en) * 2021-11-16 2024-03-19 河北谊安奥美医疗设备有限公司 Porous evaporation device

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