CN208492847U - A kind of magnetic control self-sealing venous detaining needle - Google Patents
A kind of magnetic control self-sealing venous detaining needle Download PDFInfo
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- CN208492847U CN208492847U CN201721015571.8U CN201721015571U CN208492847U CN 208492847 U CN208492847 U CN 208492847U CN 201721015571 U CN201721015571 U CN 201721015571U CN 208492847 U CN208492847 U CN 208492847U
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Abstract
The utility model relates to a kind of magnetic control self-sealing venous detaining needles, it is mainly made of inlying catheter (1), needle stand (2), steel needle core (3), steel needle core batching pig (4), magnet valve sliding block (5), magnet valve sliding slot (6), valve opening (7), manipulation magnet (8)；The operation of the utility model double lumen tube self-sealing venous detaining needle is extremely simple, tube sealing is completed in the complete situation of remaining needle plaster, no any pollutant enters, persistently using 6 days or more without the complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosis, patient comfort.Disposable syringe, flusher are not consumed, care operation step is saved, improves nursing efficiency and quality.
Description
[technical field]
The utility model belongs to the field of medical instrument technology.More specifically, the utility model relates to a kind of magnetic control self-sealings
Venous detaining needle.
[background technique]
Vein big Infused dosages in China's are 12,000,000,000 bottles within 2016, and intravenous infusion device usage amount is 3,200,000,000 sets, venous indwelling
Needle dosage 400,000,000 or more, mainly by U.S. company BD joint venture, joint venture of Bei Lang company and Shandong Wei Gao company, Soviet Union
The product produced such as Zhou Linhua company.
Venous detaining needle is also known as venous catheter needle, it is made of stainless steel needle core, outer tube and plastics needle stand.When puncture
Stainless steel needle core is pierced into blood vessel together with outer tube, into blood vessel after extract stainless steel needle core out, allow soft outer tube to stay
It is infused in the blood vessel.It is hose due to being retained in intravenous, avoids damage of the steel needle to blood vessel, patient can be with needle
Gentle activity.Venous detaining needle is punctured suitable for any position, and one-time puncture can be continuous or be spaced use in multiple, more days, is subtracted
The pain that light patient punctures repeatedly, alleviates the workload of nursing staff, clinically it is deep suffered from by shield welcome, save simultaneously
A large amount of medical treatment and nursing manpower and material resources, have Health Economics meaning, therefore the Nurses Association of China advocates using retention needle infusion, mesh
It is preceding to advocate " steel needle zero tolerance " in demonstration hospital, it is proposed that 2 times or more infusion treatments all use remaining needle.
Venous detaining needle does not need to pull out after infusion-completed, remains to use again when infusion next time, stop after being infused due to quiet
Arteries and veins blood back, remaining needle plugging, therefore indwelling time length always exist dispute, administrative department of public health, Quality Control department of hospital and stay
Zhi Zhen producer all advocates that indwelling time is no more than 3-4 days.
Venous detaining needle plugging is the blood coagulation substances such as blood platelet in blood because blood backflow is intracavitary into indwelling needle catheter
In the conduit intravascular coagulation, thrombosis and then plugging of low flow velocity, must be prevented by tube sealing technology to guarantee that conduit can be reused
Only plugging specially develops a series of apparatus, drug, operating technology and " specification ", " standard ".The U.S. is by venous transfusion association
Update primary " INS venous transfusion practice standard ", " venous transfusion practice standard version in 2016 " used at present, China within every 4 years
National health and Family Planning Committee have issued " intravenous therapy nursing technical operation specification " on November 14th, 2013." envelope
Pipe " has become a specific term in medical treatment and nursing.
" tube sealing " method of standard method at present is to inject in conduit to carry out " tube sealing " using physiological saline or heparin in sealing liquid,
Its principle is to use physiological saline or other tube-sealing solutions to occupy as working solution matter to make blood and its hemostatic composition in conduit behind space
It not can enter in conduit；Secondly the blood coagulation substance that the physiological saline in conduit can be diluted into, delays blood coagulation and thrombosis.But
It is that this method is not avoided that blood enters conduit, the reason is as follows that: first, because breathing and heartbeat cause human peripheral quiet
Pulse pressure is fluctuation, and " phenomenon of handling up ", which is presented, with each heartbeat and breathing in inlying catheter end causes blood to enter conduit
Interior, thoracic cavity high pressure is conducted to peripheral vein when especially coughing and sneeze；Second, blood platelet, cell and blood coagulation in blood
Substance can diffuse into conduit reach a certain amount after form sludged blood.It is optimal to prevent from venous blood from entering remaining needle leading
Pipe method be exactly to fill " switch " to conduit, the switch is better closer to indwelling needle catheter end.
" tube sealing " of standard needs to pass through using the equipment such as " positive pressure connector ", " tube-sealing solution ", " rinsing tube sealing syringe "
The fine technical operation such as " pulsed is injected three times " and " positive pressure tube sealing " is completed.This method increase the workloads of nurse；
Disposable equipment forms resource waste, increases Biohazard Waste and processing cost.
The about 4 hours effective time of physiological saline " tube sealing " was only used for the tube sealing of intermittence infusion, more than 4 hours
" tube sealing " uses heparin in sealing liquid.Heparin is anticoagulant prescription medicine, therefore increases the workload of doctor；A part of patient is because of constitution
Heparin medical fluid tube sealing cannot be used with the state of an illness, this kind of every 4 hours of patient " tube sealing " once, increases nursing work load, influences to sleep
Rest, influences patient comfort.
A kind of existing method implementation " tube sealing " for closing or opening infusion channel at needle stand using mechanical piston at needle stand
Remaining needle, regardless of its working principle, be all at needle stand formation " valve ".External force is operated on needle stand is transferred to vein
Inside lead to catheter displacement, fall off and scratch endangium, causes infusion leakage, infusion failure, phlebitis, phlebothrombosis etc..
Separately there is a kind of self-enclosed remaining needle, needle stand inner cavity is isolated into plemum and transfusing chamber two parts by partition part,
The indoor liquid energy automatic slowly inflow transfusing chamber of positive pressure reaches " tube sealing " when stopping infusion.The indoor liquid of positive pressure flows out quickly
Lose so-called " positive pressure ", the end of inlying catheter be it is open, with breathing and heartbeat pressure fluctuation still " blood back ", still can
Blood coagulation plugging.
Separately have in other methods that counterflow-preventing machinery flap valve is arranged in catheter tip, duck-beak type is unidirectionally open, because " tube sealing " is imitated
Fruit is uncertain, and listing is not recommended in " venous transfusion practice standard " for many years to be used, these products are on the market without trace.
Therefore, the present inventor is on the basis of summarizing the prior art, by lot of experiments, completes finally practical
It is novel.
[utility model content]
[technical problems to be solved]
The purpose of the utility model is to provide a kind of magnetic control self-sealing venous detaining needles.
[technical solution]
The utility model is achieved through the following technical solutions.
The utility model relates to a kind of magnetic control self-sealing venous detaining needles, it mainly includes needle stand 2 and steel needle core 3, it is also
It mainly include inlying catheter 1, steel needle core batching pig 4, magnet valve sliding block 5, magnet valve sliding slot 6, valve opening 7 and manipulation magnet 8；
Inlying catheter 1 wherein is installed in 2 one end of needle stand, is steel needle core 3 in inlying catheter 1；In 2 other end of needle stand at it
Middle setting steel needle core batching pig (4)；
A magnet valve sliding slot 6 is arranged close to one end of inlying catheter 1 at it in needle stand 2, and 6 longitudinal axis of magnet valve sliding slot and needle stand 2 are vertical
Axis is vertical；Magnet valve sliding slot 6, which is arranged one, can allow steel needle core and transfusion liquid by the valve opening 7 into inlying catheter 1, and valve opening 7 is vertical
Axis and 6 axis oriented normal of magnet valve sliding slot；One pole N is installed in magnet valve sliding slot 6 towards the magnet valve sliding block 5 in needle stand 2, in needle stand 2
The adjustable manipulation magnet 8 of a N extreme direction is arranged in external corresponding position；Under manipulation 8 magnetic repulsion of magnet or sucking action, magnetic
Valve slider 5 moves up and down in magnet valve sliding slot 6, so that valve opening 7 be opened or closed；
In infusion, the pole N for manipulating magnet 8 is adjusted towards magnet valve sliding block 5, magnet valve sliding block 5 is under magnetic repellence effect
It is moved on the outside of to needle stand 2, then the valve opening 7 of magnet valve sliding slot 6 is opened, and transfusion liquid flows to inlying catheter 1；
When stopping being infused tube sealing, by the N umpolung for manipulating magnet 8 towards 2 outside of needle stand, make the pole the S court for manipulating magnet 8
To magnet valve sliding block 5, magnet valve sliding block 5 is moved under magnetic force sucking action into needle stand 2, then blocks the valve opening 7 of magnet valve sliding slot 6
Form closing.
A kind of preferred embodiment according to the present utility model, magnet valve sliding block 5 and magnet valve sliding slot 6 are cylindrical body, square body
Or circular cone shape.
Another kind preferred embodiment according to the present utility model, magnet valve sliding block 5 and manipulation magnet 8 are with permanent magnet, soft
Made of magnet or electromagnet.
It is according to the present utility model another kind preferred embodiment, the permanent magnet be neodymium iron boron Nd2Fe14B rare earth forever
Magnetic material, SmCo samarium-cobalt permanent-magnetic material, AlNiCo alnico permanent magnetic material or ferrite permanent-magnet materials.
Another kind preferred embodiment according to the present utility model, magnet valve sliding slot 6 is manufactured with plastics or stainless steel metal
's.
Another kind preferred embodiment according to the present utility model, the valve opening 7 are cylinder, square-column-shaped or cylindroid
Shape.
The utility model is described in more detail below.
The utility model magnetic control self-sealing venous detaining needle is mainly the polarity phase for passing through magnet valve sliding block 5 and manipulating magnet 7
Reprimand or interattraction, when magnet valve sliding block 5 moves in magnet valve sliding slot 6, valve opening 7 can opening and closing of fault, when unlatching then forms infusion
Channel.The switch preferably can block blood to enter conduit, meet physiology and medicine principle close to catheter opening end.
It is different from the anticoagulant tube sealing of the dilution of physiological saline and salt water occupy-place tube sealing, the utility model magnetic control self-sealing vein
The physical method of remaining needle does not have " tube-sealing solution " to enter blood circulation of human body, without carrying out the control of pharmaceutically grade.
The utility model relates to a kind of magnetic control self-sealing venous detaining needles, it includes needle stand 2 and steel needle core 3, it further includes
Inlying catheter 1, steel needle core batching pig 4, magnet valve sliding block 5, magnet valve sliding slot 6, valve opening 7 and manipulation magnet 8；The utility model magnetic control is certainly
Envelope formula venous detaining needle specific structure is referring to attached drawing 1 and attached drawing 2.
Inlying catheter 1 wherein is installed in 2 one end of needle stand, is steel needle core 3 in inlying catheter 1；In 2 other end of needle stand at it
Middle setting steel needle core batching pig 4；Inlying catheter 1, needle stand 2, steel needle core 3, steel needle core batching pig 4 and usually used remaining needle class
Seemingly.
A magnet valve sliding slot 6 is arranged close to one end of inlying catheter 1 at it in needle stand 2, and 6 longitudinal axis of magnet valve sliding slot and needle stand 2 are vertical
Axis is vertical；Magnet valve sliding slot 6 by needle stand bore seal be divided into connection veins indwelling catheter section be connected to infusion apparatus pipeline section；
Magnet valve sliding slot 6, which is arranged one, can allow steel needle core and transfusion liquid by the valve opening 7 into inlying catheter 1, and valve opening 7 is vertical
Axis and 6 axis oriented normal of magnet valve sliding slot；
One pole N is installed in magnet valve sliding slot 6 towards the magnet valve sliding block 5 in needle stand 2, the corresponding position outside needle stand 2 is set
Set the adjustable manipulation magnet 8 of a N extreme direction；Under manipulation 8 magnetic repulsion of magnet or sucking action, magnet valve sliding block 5 is in magnet valve
It is moved up and down in sliding slot 6, so that valve opening 7 be opened or closed；
Magnet valve sliding block 5 and magnet valve sliding slot 6 are cylindrical body, square body or circular cone shape, it is of course also possible to select others
Shape, only both shape can cooperate, and be conducive to operate, these shapes may be used to the utility model,
Within scope of protection of the utility model.
Magnet valve sliding block 5 and manipulation magnet 8 are made of permanent magnet, soft magnetic bodies or electromagnet.The permanent magnet is
Neodymium iron boron Nd2Fe14B rare earth permanent-magnetic material, SmCo samarium-cobalt permanent-magnetic material, AlNiCo alnico permanent magnetic material or ferrite permanent-magnet
Material.They are all current market sales of permanent-magnet materials, such as by the production and sales of Dongguan City Zhi Hong magnet Co., Ltd
Neodymium iron boron Nd2Fe14B rare earth permanent-magnetic material, by the production and sales of Shanghai Wen Chengci industry Co., Ltd SmCo samarium-cobalt permanent-magnetic material,
By the AlNiCo alnico permanent magnetic material of Jiu Hengci material Co., Ltd of Shenzhen production and sales, limited by Guangzhou China and Sweden magnetic material
The ferrite permanent-magnet materials of company's production and sales.
In the present invention, all that there is magnetism enough, and will not be to the utility model magnetic control self-sealing venous indwelling
These permanent-magnet materials that needle and its operation adversely affect may be used to the utility model, also protect model in the utility model
Within enclosing.
Magnet valve sliding slot 6 is manufactured with plastics or stainless steel metal.The utility model is moulded using polycarbonate or polyethylene
Material manufacture, these plastics are all current market sales of products, by Bayer A.G with trade name MAKROLON or by horse
Carry out the product that West Asia PETLIN company is sold with trade name PETLIN.The other materials similar with polycarbonate or polyethylene performance
Material, such as polystyrene, polyvinyl chloride, polypropylene, nylon, terylene etc. also may be used to the utility model, also practical at this
Within novel protection scope.
The stainless steel that the utility model uses is medical stainless steel, these stainless steel capital are current market sales of productions
Product, such as the medical stainless steel sold by Wuxi Long Yuxiang stainless steel Co., Ltd.
In the present invention, all that there is enough strengths of materials, and will not be to the utility model magnetic control self-sealing vein
These plastics or metal material that remaining needle and its operation adversely affect may be used to the utility model, also practical at this
Within the scope of novel protected.
In the present invention, the valve opening 7 is cylinder, square-column-shaped or elliptic cylindrical shape, referring specifically to attached drawing 3.
Certainly, valve opening 7 can also select other shapes, and only they are conducive to process, and be conducive to operation and cleaning, these shapes are all
It can be used for the utility model, also within scope of protection of the utility model.
Main specific structure of the utility model magnetic control self-sealing venous detaining needle in infusion is referring to attached drawing 1.It will manipulation
The pole the N adjustment of magnet 8 towards magnet valve sliding block 5, magnet valve sliding block 5 under magnetic repellence effect to moving on the outside of needle stand 2, then magnet valve
The valve opening 7 of sliding slot 6 is opened, and transfusion liquid flows to steel needle core 3；
Main specific structure of the utility model magnetic control self-sealing venous detaining needle when stopping being infused tube sealing is referring to attached drawing
2.By the N umpolung for manipulating magnet 8 towards 2 outside of needle stand, make the pole S for manipulating magnet 8 towards magnet valve sliding block 5, magnet valve sliding block 5 exists
It is moved under magnetic force sucking action into needle stand 2, then the valve opening 7 of magnet valve sliding slot 6 is blocked and forms closing.
According to the utility model, all magnetic valves that is arranged in transfusion lumen close liquid-transport pipe-line, and no matter it is used
Single or multiple magnetic valve gears, no matter magnet valves are set to needle stand or liquid-transport pipe-line tip, if their effect with
It is also all within the protection scope of the present utility model that those of identical magnetic valve is acted in the utility model.
According to the utility model, the manipulation magnet 7 can complete tube sealing and defeated again without opening remaining needle plaster
Liquid, avoids infection, and care operation external force is also avoided to lead to the movement of intravenous catheter by needle stand or scratch in vein blood vessel
Film.
Indwelling needle catheter 1, needle stand 2 that the utility model uses etc. are manufactured with polycarbonate or polyethylene.It is described
Polycarbonate or polyethylene be all current market sales of product, such as by Bayer A.G with trade name
The product that MAKROLON or PETLIN company of Malaysia are sold with trade name PETLIN.
The utility model magnetic control self-sealing venous detaining needle can be used according to conventional venous detaining needle application method, only
Notice whether the polarity of preoperation inspection magnet valve sliding block 5 and manipulation magnet 7 is correct.
The utility model does not use anticoagulant heparin drug " tube sealing ", and the patient of heparin taboo person, any constitution and the state of an illness are
It can use safely, be not necessarily to diagnosis and prescription, save intelligence cost.
Tube sealing is completed under the conditions of the magnetic control self-sealing venous detaining needle of the utility model is totally-enclosed, without puncturing calparine cap,
No rubber impurities and pollutant enter blood circulation；Without injecting tube-sealing solution by " positive pressure connector ", pollution section is reduced, is extended
Remaining needle uses the time, uses manpower and material resources sparingly.
The utility model avoids the care operation on needle stand, and no external force is transferred to indwelling needle catheter and causes the secondary damage of vein
The complication such as wound, leakage, phlebitis, phlebothrombosis, extend remaining needle uses the time, uses manpower and material resources sparingly, increases patient's
Comfort.
The operation of the utility model magnetic control self-sealing venous detaining needle is extremely simple, the pole of the singlehanded actuating magnet 8 that swaps round
Property can complete tube sealing and transfusion operation, without fine techniques operate, without aspiration medicinal liquid and prepare tube-sealing solution, without consuming one
Secondary property syringe, flusher save care operation step, improve nursing efficiency and quality.
The utility model does not use other materials, avoids the various drawbacks of spring valve, flap valve, piston and lubricant.
The utility model is using the high molecular material for having been approved by and being widely used in medical treatment, without authenticating to material
And examination & approval.
[beneficial effect]
The beneficial effects of the utility model are:
The utility model does not use anticoagulant heparin drug " tube sealing ", and therefore, the magnetic control self-sealing vein of the utility model stays
The patient that needle is suitable for any constitution and the state of an illness is set, use is safe, is not necessarily to diagnosis and prescription, saves intelligence cost.
Tube sealing, no rubber impurities and pollution are completed under the conditions of the magnetic control self-sealing venous detaining needle of the utility model is totally-enclosed
Object enters, and extend remaining needle uses the time, uses manpower and material resources sparingly.
The operation on needle stand is avoided when the utility model magnetic control self-sealing Catheter, no external force, which is transferred to, to be stayed
It sets wire guide and causes the complication such as vein secondary damage, leakage, phlebitis, phlebothrombosis, extend remaining needle uses the time, increases
Add the comfort of patient.
The operation of the utility model magnetic control self-sealing venous detaining needle is extremely simple, without aspiration medicinal liquid and prepares tube-sealing solution,
Without consuming disposable syringe, flusher, care operation step is saved, nursing efficiency and quality are improved.
The indwelling time of existing routine venous detaining needle is 3~4 days, often because plugging or injury of vein are pulled out in advance；
Because the damage at skin and venipuncture has potential bacterium infection risk, 6 days upper limits for conventional indwelling time, this is practical new
The magnetic control self-sealing detaining time of intravenous indwelling needle of type can meet or exceed 6 day time.
[Detailed description of the invention]
Fig. 1 is the utility model magnetic control self-sealing venous detaining needle schematic diagram when valve opening 7 is opened；
Fig. 2 is the utility model magnetic control self-sealing venous detaining needle schematic diagram when valve opening 7 is closed；
Fig. 3 is 7 plan view of valve opening；
In figure:
1- inlying catheter；2- needle stand；3- steel needle core；4- steel needle core batching pig；5- magnet valve sliding block；6- magnet valve sliding slot；7- valve
Hole；8- actuating magnet.
[specific embodiment]
It will be better understood that the utility model by following embodiments.
Embodiment 1: the utility model magnetic control self-sealing venous detaining needle
The embodiment of the present embodiment is as follows:
Magnetic control self-sealing venous detaining needle mainly includes needle stand 2 and steel needle core 3, it further include inlying catheter 1, steel needle core every
From plug 4, magnet valve sliding block 5, magnet valve sliding slot 6, valve opening 7 and manipulation magnet 8；Wherein: magnet valve sliding block 5 and magnet valve sliding slot 6 are cylindrical body
Shape；Magnet valve sliding block 5 and manipulation magnet 8 are with the neodymium iron boron Nd2Fe14B by the production and sales of Dongguan City Zhi Hong magnet Co., Ltd
Made of rare earth permanent-magnetic material.Magnet valve sliding slot 6 be with by Bayer A.G with the polycarbonate plastic of trade name MAKROLON
Manufacture；Valve opening 7 is cylinder；
Inlying catheter 1 wherein is installed in 2 one end of needle stand, is steel needle core 3 in inlying catheter 1；In 2 other end of needle stand at it
Middle setting steel needle core batching pig 4；
A magnet valve sliding slot 6 is arranged close to one end of inlying catheter 1 at it in needle stand 2, and 6 longitudinal axis of magnet valve sliding slot and needle stand 2 are vertical
Axis is vertical；Magnet valve sliding slot 6, which is arranged one, can allow steel needle core and transfusion liquid by the valve opening 7 into inlying catheter 1, and valve opening 7 is vertical
Axis and 6 axis oriented normal of magnet valve sliding slot；One pole N is installed in magnet valve sliding slot 6 towards the magnet valve sliding block 5 in needle stand 2, in needle stand 2
The adjustable manipulation magnet 8 of a N extreme direction is arranged in outer corresponding position；Under manipulation 8 magnetic repulsion of magnet or sucking action, magnet valve
Sliding block 5 moves up and down in magnet valve sliding slot 6, so that valve opening 7 be opened or closed；
In infusion, the pole N for manipulating magnet 8 is adjusted towards magnet valve sliding block 5, magnet valve sliding block 5 is under magnetic repellence effect
It is moved on the outside of to needle stand 2, then the valve opening 7 of magnet valve sliding slot 6 is opened, and transfusion liquid flows to inlying catheter 1；
When stopping being infused tube sealing, by the N umpolung for manipulating magnet 8 towards 2 outside of needle stand, make the pole the S court for manipulating magnet 8
To magnet valve sliding block 5, magnet valve sliding block 5 is moved under magnetic force sucking action into needle stand 2, then blocks the valve opening 7 of magnet valve sliding slot 6
Form closing.
Retention needle infusion and tube sealing are carried out using the magnetic control self-sealing venous detaining needle of the present embodiment, sterile lossless tube sealing,
No any tube sealing liquid or drug enter blood circulation, persistently using 6 days without any vein secondary damage, leakage, phlebitis, quiet
The complication such as arteries and veins thrombus.
Embodiment 2: the utility model magnetic control self-sealing venous detaining needle
The embodiment of the present embodiment is identical as the embodiment of embodiment 1, and only magnet valve sliding block 5 and magnet valve sliding slot 6 are
Square column shape；Magnet valve sliding block 5 and manipulation magnet 8 be with the SmCo SmCo by the production and sales of Shanghai Wen Chengci industry Co., Ltd forever
Made of magnetic material.Magnet valve sliding slot 6 is manufactured with the medical stainless steel sold by Wuxi Long Yuxiang stainless steel Co., Ltd；Valve
Hole 7 is square-column-shaped shape.
Embodiment 3: the utility model magnetic control self-sealing venous detaining needle
The embodiment of the present embodiment is identical as the embodiment of embodiment 1, and only magnet valve sliding block 5 and magnet valve sliding slot 6 are
Circular cone shape；Magnet valve sliding block 5 and manipulation magnet 8 are with the AlNiCo aluminium by the production and sales of Jiu Hengci material Co., Ltd of Shenzhen
Made of nickel cobalt permanent-magnet material.Magnet valve sliding slot 6 is with the poly- second sold by Malaysian PETLIN company with trade name PETLIN
Alkene plastics manufacture；Valve opening 7 is elliptic cylindrical shape.
Embodiment 4: the utility model magnetic control self-sealing venous detaining needle
The embodiment of the present embodiment is identical as the embodiment of embodiment 1, and only magnet valve sliding block 5 and magnet valve sliding slot 6 are
Square column shape；Magnet valve sliding block 5 and manipulation magnet 8 are with the ferrite by the production and sales of magnetic material Co., Ltd of Guangzhou China and Sweden
Made of permanent-magnet material.Magnet valve sliding slot 6 is to be moulded with by Malaysian PETLIN company with the polyethylene that trade name PETLIN is sold
Material manufacture；Valve opening 7 is cylindrical.
Claims (6)
1. a kind of magnetic control self-sealing venous detaining needle, it mainly includes needle stand (2) and steel needle core (3), it is characterised in that it is also main
It to include inlying catheter (1), steel needle core batching pig (4), magnet valve sliding block (5), magnet valve sliding slot (6), valve opening (7) and manipulation magnet
(8)；
Inlying catheter (1) wherein is installed in needle stand (2) one end, is in inlying catheter (1) steel needle core (3)；It is another in needle stand (2)
Steel needle core batching pig (4) are arranged wherein in end；
A magnet valve sliding slot (6), magnet valve sliding slot (6) longitudinal axis and needle stand is arranged close to one end of inlying catheter (1) at it in needle stand (2)
(2) axis oriented normal；Magnet valve sliding slot (6), which is arranged one, can allow steel needle core and transfusion liquid to pass through the valve opening into inlying catheter (1)
(7), valve opening (7) longitudinal axis and magnet valve sliding slot (6) axis oriented normal；One pole N of installation is interior towards needle stand (2) in magnet valve sliding slot (6)
Magnet valve sliding block (5), in the outer corresponding position of needle stand (2), the adjustable manipulation magnet (8) of one N extreme direction is set；In manipulation magnet
(8) under magnetic repulsion or sucking action, magnet valve sliding block (5) moves up and down in magnet valve sliding slot (6), so that valve opening (7) be opened
Or it closes；
In infusion, the pole N for manipulating magnet (8) is adjusted towards magnet valve sliding block (5), magnet valve sliding block (5) is acted in magnetic repellence
Lower to movement on the outside of needle stand (2), then the valve opening (7) of magnet valve sliding slot (6) is opened, and transfusion liquid flows to inlying catheter (1)；
When stopping being infused tube sealing, by the N umpolung for manipulating magnet (8) towards needle stand (2) outside, make the pole S for manipulating magnet (8)
Towards magnet valve sliding block (5), magnet valve sliding block (5) is moved under magnetic force sucking action into needle stand (2), then by magnet valve sliding slot (6)
Valve opening (7) block formed closing.
2. magnetic control self-sealing venous detaining needle according to claim 1, it is characterised in that magnet valve sliding block (5) and magnet valve sliding slot
It (6) is cylindrical body, square body or circular cone shape.
3. magnetic control self-sealing venous detaining needle according to claim 1, it is characterised in that magnet valve sliding block (5) and manipulation magnet
It (8) is made of permanent magnet, soft magnetic bodies or electromagnet.
4. magnetic control self-sealing venous detaining needle according to claim 3, it is characterised in that the permanent magnet is neodymium iron boron
Nd2Fe14B rare earth permanent-magnetic material, SmCo samarium-cobalt permanent-magnetic material, AlNiCo alnico permanent magnetic material or ferrite permanent-magnet materials.
5. magnetic control self-sealing venous detaining needle according to claim 1, it is characterised in that magnet valve sliding slot (6) be with plastics or
Stainless steel metal manufacture.
6. magnetic control self-sealing venous detaining needle according to claim 1, it is characterised in that the valve opening (7) is cylinder
Shape, square-column-shaped or elliptic cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721015571.8U CN208492847U (en) | 2017-08-15 | 2017-08-15 | A kind of magnetic control self-sealing venous detaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721015571.8U CN208492847U (en) | 2017-08-15 | 2017-08-15 | A kind of magnetic control self-sealing venous detaining needle |
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| Publication Number | Publication Date |
|---|---|
| CN208492847U true CN208492847U (en) | 2019-02-15 |
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ID=65301339
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| CN201721015571.8U Active CN208492847U (en) | 2017-08-15 | 2017-08-15 | A kind of magnetic control self-sealing venous detaining needle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335107A (en) * | 2017-08-15 | 2017-11-10 | 西藏多欣医疗器械制造有限公司 | A kind of magnetic control self-sealing venous detaining needle |
| CN109893287A (en) * | 2019-03-28 | 2019-06-18 | 卢乐 | Ox abomasal displacement operation repositor based on permanent magnetic drive |
-
2017
- 2017-08-15 CN CN201721015571.8U patent/CN208492847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335107A (en) * | 2017-08-15 | 2017-11-10 | 西藏多欣医疗器械制造有限公司 | A kind of magnetic control self-sealing venous detaining needle |
| CN109893287A (en) * | 2019-03-28 | 2019-06-18 | 卢乐 | Ox abomasal displacement operation repositor based on permanent magnetic drive |
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