CN104399145B - A kind of double lumen tube self-sealing venous detaining needle - Google Patents

A kind of double lumen tube self-sealing venous detaining needle Download PDF

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Publication number
CN104399145B
CN104399145B CN201410789774.7A CN201410789774A CN104399145B CN 104399145 B CN104399145 B CN 104399145B CN 201410789774 A CN201410789774 A CN 201410789774A CN 104399145 B CN104399145 B CN 104399145B
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China
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needle
sealing
capsule
venous detaining
double lumen
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CN201410789774.7A
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Chinese (zh)
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CN104399145A (en
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邓杜娟
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邓杜娟
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

The present invention relates to a kind of double lumen tube self-sealing venous detaining needle, described double lumen tube self-sealing venous detaining needle is made up of with semi-circular cross-section draw point core 10 inlying catheter 1, as received basis liquid capsule pipe 2, transfusion lumen 3, needle point groove 4 flexible steel in flat section tubing 5, pressurizing block 6, the capsule of resistance to hydraulic fluid 7, snap close 8, needle stand 9.Double lumen tube self-sealing venous detaining needle of the present invention operation is extremely simple, completes tube sealing, enters without any pollutant, persistently use without the complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosis, patient comfort under the conditions of working solution matter is totally-enclosed.Do not consume disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.

Description

A kind of double lumen tube self-sealing venous detaining needle
[technical field]
The invention belongs to technical field of medical instruments.More particularly it relates to an double lumen tube is certainly Envelope formula venous detaining needle.
[background technology]
The consumption of China's vein infusion solutions in 2013 is 10,400,000,000 bottles, and intravenous infusion device usage amount is 30 Hundred million sets, venous detaining needle consumption more than 300,000,000.Mainly by the joint venture of U.S. company BD, Bei Lang The product that joint venture of company and Shandong Wei Gao company, Suzhou Lin Hua company etc. are produced.
Venous detaining needle is also called venous catheter needle, and it is by rustless steel nook closing member, trocar sheath and plastics needle stand Composition.During puncture, rustless steel nook closing member is thrust in blood vessel together with trocar sheath, extract out not after intravasation Rust draw point core, allows the trocar sheath of softness be left to remain in blood vessels and infuses.Owing to being retained in intravenous it is Flexible pipe, it is to avoid the draw point damage to blood vessel, patient can band pin gentle activity.Venous detaining needle is fitted Puncture for any position, one-time puncture can continuously or interval repeatedly, many days use, alleviate disease The misery of people's repeated localised puncture, alleviates the workload of nursing staff, is deeply protected trouble clinically and welcome, Saving substantial amounts of medical treatment and nursing manpower and materials simultaneously, have Health Economics meaning, therefore China protects Neo-Confucianism can advocate use retention needle infusion, the most advocates " draw point zero tolerance " in demonstration hospital, it is proposed that The infusion treatment of more than 2 times all uses remaining needle.
Venous detaining needle need not pull out after infusion-completed, remains use again during transfusion next time, stops defeated Due to vein blood back after liquid, remaining needle plugging, therefore there is dispute, health in indwelling time length always Administrative department, Quality Control department of hospital and remaining needle producer all advocate that indwelling time is less than 3-4 days.
The blood coagulations such as venous detaining needle plugging is because blood and flows back in catheter lumen, the platelet in blood Material is in conduit intravascular coagulation, thrombosis and then the plugging of low flow velocity, for ensureing that conduit can be reused Plugging must be prevented by tube sealing technology, specially develop a series of apparatus, medicine, operating technology " specification ", " standard ".The U.S. is updated once " INS venous transfusion in every 4 years by venous transfusion association Practice standard ", currently used " venous transfusion practice standard version in 2011 ", China's national health and Family Planning Committee has issued " intravenous therapy nursing technical operation specification " on November 14th, 2013. " tube sealing " has become as a specific term in medical treatment and nursing.
Standard method " tube sealing " method is for using normal saline or heparin in sealing liquid to inject in conduit at present Carrying out " tube sealing ", its principle assumes that venous pressure is resting state, normal saline or other tube-sealing solutions Make blood and hemostatic composition thereof can not enter in conduit after occupying conduit cavity space as working solution matter; Secondly the blood coagulation substance that the normal saline in conduit can be diluted into, delays blood coagulation and thrombosis.Should Method cannot be avoided blood and enters conduit, and its reason is as follows: one, leads with heartbeat because breathing Causing human peripheral vein pressure is fluctuation, causes blood to form " blood back " in entering conduit;Its two, Platelet, cell and blood coagulation substance in blood can diffuse into and be filled in conduit " tube-sealing solution " Sludged blood is formed after reaching a certain amount.
This " tube sealing " needs to use " positive pressure connector ", " tube-sealing solution ", " rinsing tube sealing syringe " Deng equipment, the technical operation fine by " three subpulse formulas are injected " and " positive pressure tube sealing " etc. is complete Become.This method increase the workload of nurse;Disposable tube sealing irrigating syringe forms resource Property waste, add Biohazard Waste and processing cost, be unfavorable for environmental protection.
Due to the effective time about 4 hours of " tube sealing " of normal saline, should " tube sealing " be only used for The tube sealing of intermittence transfusion, " tube sealing " more than 4 hours must use heparin in sealing liquid.Heparin is Anticoagulant prescription drugs, nurse can not determine to use, therefore add the workload of doctor;Additionally, one Divide patient can not use heparin medicinal liquid tube sealing because of body constitution and the state of an illness, every 4 hours of this kind of patient " tube sealing " Once, increasing nursing work load, impact sleep is had a rest, and affects patient comfort.
Currently have a kind of at indwelling needle use mechanical piston close or open the method for conduit at needle stand Carry out the remaining needle of " tube sealing ", regardless of its operation principle, be all formation " valve " at needle stand, Closing valve time " tube sealing " causes intravenous conduit to form a long and narrow dead space, the blood coagulation in blood Material enters this section without in flow velocity dead space, and blood coagulation substance is attached to tube wall blood coagulation and forms plugging.Secondly exist Operate the external force of piston on needle stand and be transferred to intravenous conduit, catheter displacement, come off and scratch blood vessel Inner membrance, cause transfusion leakage, infuse unsuccessfully, phlebitis, phlebothrombosis etc..
Separately having a kind of self-enclosed remaining needle, its needle stand inner chamber is cut off part and is isolated into plemum and transfusion Chamber two parts, during stopping infusion, the inflow of the liquid energy automatic slowly in plemum transfusing chamber reaches " tube sealing ". Principle is as normal saline " tube sealing ", and the method simply reduces nurse and injects " the envelope of tube-sealing solution Pipe " operation, owing to the tip of inlying catheter is open, with breathing the pressure oscillation brought with heart beating still So return back out existing " blood back " and platelet and blood coagulation substance enters, still can blood coagulation plugging.
Separately have and counterflow-preventing machinery flap valve, other method of the unidirectional opening of duck-beak type be set at catheter tip, Because " tube sealing " effect is uncertain, list the most recommended use in " venous transfusion practice standard " for many years, These products are the most without trace.
Therefore, the present inventor is on the basis of summing up prior art, by lot of experiments, the completeest Become the present invention.
[summary of the invention]
[solving the technical problem that]
It is an object of the invention to provide a kind of double lumen tube self-sealing venous detaining needle.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of double lumen tube self-sealing venous detaining needle.Described double lumen tube self-sealing vein Remaining needle is mainly by inlying catheter 1, as received basis liquid capsule pipe 2, transfusion lumen 3, needle point groove 4, flexibility Connecting tube 5, pressurizing block 6, the capsule of resistance to hydraulic fluid 7, snap close 8, needle stand 9, draw point core 10 etc. form.
Within as received basis liquid capsule pipe 2 is placed in inlying catheter 1, as received basis liquid capsule pipe 2 and inlying catheter 1 Needle point groove 4 is closed and constituted to terminal fusion, and as received basis liquid capsule pipe 2 other end passes needle stand 9 ectosome with soft One end of property connecting tube 5 is connected, and the other end of flexible steel in flat section tubing 5 is connected with the capsule of resistance to hydraulic fluid 7;
The capsule of resistance to hydraulic fluid 7 is placed in pressurizing block 6;When transfusion, pressurizing block 6 is opened, allows working solution Matter is back to the capsule of resistance to hydraulic fluid 7;When needing tube sealing after stopping infusion, pressurizing block 6 is closed up, and pins Snap close 8, allows working solution mass flow extrude transfusion lumen 3 to as received basis liquid capsule pipe 2, as received basis liquid capsule pipe 2 Formed and close.
A preferred embodiment of the invention, by injecting working solution to as received basis liquid capsule pipe 2 Matter makes its full rear enclosed transfusion lumen 3.
According to the another kind of preferred implementation of the present invention, described flexible steel in flat section tubing 5 is avoided that nursing Operation external force causes the movement of intravenous catheter by needle stand or scratches vein blood vessel inner membrance.
According to the another kind of preferred implementation of the present invention, the described capsule of resistance to hydraulic fluid 7 is cylindrical, long Cube shape, oval or circular.
According to the another kind of preferred implementation of the present invention, described working solution matter is normal saline or steaming Distilled water.
According to the another kind of preferred implementation of the present invention, inlying catheter 1, as received basis liquid capsule pipe 2, soft Property connecting tube 5, the capsule of resistance to hydraulic fluid 7, needle stand 9, draw point core 10 manufacture with Merlon or polyethylene, Can elastic dilatation after wherein as received basis liquid capsule pipe 2 is full.
According to the another kind of preferred implementation of the present invention, the cross section of draw point core 10 is semicircle.
The present invention is described in more detail below.
The present invention is to allow working solution matter capsule occupy the physical method in space in conduit, and fluid properties makes work Liquid capsule can fill up each gap of indwelling needle catheter transfusing chamber, starts closure from catheter tip, towards Intravenous conduit does not stay gap not stay dead space, thoroughly cuts off blood and conduit, meets physiology and doctor Learn principle.
Different from the dilution anticoagulant tube sealing of normal saline and saline occupy-place tube sealing, working solution capsule of the present invention Occupying the physical method in space in conduit does not has " working solution matter " to enter blood circulation of human body, it is not necessary to right " working solution matter " carries out the control of pharmaceutically grade.
The present invention relates to a kind of double lumen tube self-sealing venous detaining needle.Described double lumen tube self-sealing vein Remaining needle is by inlying catheter 1, as received basis liquid capsule pipe 2, transfusion lumen 3, needle point groove 4 flexible steel in flat section tubing 5, pressurizing block 6, the capsule of resistance to hydraulic fluid 7, snap close 8, needle stand 9, draw point core 10 form.Two-chamber of the present invention The concrete structure of pipe self-sealing venous detaining needle sees accompanying drawing 1.
Within as received basis liquid capsule pipe 2 is placed in inlying catheter 1, as received basis liquid capsule pipe 2 and inlying catheter 1 Needle point groove 4 is closed and constituted to terminal fusion, and as received basis liquid capsule pipe 2 other end passes needle stand 9 ectosome with soft One end of property connecting tube 5 is connected, and the other end of flexible steel in flat section tubing 5 is connected with the capsule of resistance to hydraulic fluid 7;
Described double lumen tube self-sealing venous detaining needle is by injecting working solution matter to as received basis liquid capsule pipe 2 Make its full rear enclosed transfusion lumen 3.Described as received basis liquid capsule is positioned at transfusion lumen.According to this Invention, every setting in transfusion lumen occupies the as received basis liquid capsule pipe 2 of infusion channel and closes tube for transfusion Chamber 3, no matter its as received basis liquid capsule pipe 2 is transfusion lumen 3 longitudinal direction overall length or partial-length, nothing Its as received basis liquid liquid capsule pipe 2 of opinion is arranged at the tip of transfusion lumen 3 or a certain section, no matter its as received basis Liquid liquid capsule pipe 2 is arranged at the part or all of of the cross section of transfusion lumen 3, and such liquid capsule the most all exists In protection scope of the present invention.
Its full rear enclosed transfusion lumen 3 is made by injecting working solution matter to as received basis liquid capsule pipe 2.Institute The working solution matter stated is normal saline or distilled water.According to the present invention, every have with normal saline or Distilled water character is close, do not have other liquid of any harm to human body such as: ethanol, sodium citrate, Taurolidine, ethylenediaminetetraacetic acid etc. are also used as the working solution matter of the present invention, and these liquid are the most all Within protection scope of the present invention.
According to the present invention, described flexible steel in flat section tubing 5 is avoided that nursing procedure external force is caused by needle stand The movement of intravenous catheter or scuffing vein blood vessel inner membrance.
Described inlying catheter 1, as received basis liquid capsule pipe 2 are by Merlon or poly-second with flexible steel in flat section tubing 5 Alkene manufactures, can elastic dilatation after wherein as received basis liquid capsule pipe 2 is full.
The capsule of resistance to hydraulic fluid 7 that the present invention uses be cylinder, cuboid, oval or circular, employing Shape determine according to actually used situation, so that having the energy of certain resorption working solution matter Power.The capsule of resistance to hydraulic fluid 7 determines according to service condition equipped with described working solution matter, its filling weight.Pressure Liquid capsule 7 is placed in pressurizing block 6;When transfusion, pressurizing block 6 is opened, allows working solution matter be back to The capsule of resistance to hydraulic fluid 7;When needing tube sealing after stopping infusion, pressurizing block 6 is closed up, and pins snap close 8, Allowing working solution mass flow to as received basis liquid capsule pipe 2, as received basis liquid capsule pipe 2 extrudes transfusion lumen 3 and forms closing. When transfusion, needle tubing enlarged diagram is shown in Fig. 4;When " tube sealing ", needle tubing enlarged diagram is shown in Fig. 5.
Needle stand 9 close-up schematic view that the present invention uses is shown in accompanying drawing 2, and it is sold in the market Product, such as by Bibi Medical Apparatus Co., Ltd., Suzhou with the closed indwelling of trade name " fearful agate " Pin, Weigao Group Co., Ltd. are with the disposable vein remaining needle of trade name " clean auspicious ", or Suzhou woods " pipe-blocking-proof remaining needle " product that Medical Devices Co., Ltd. of China sells.
The capsule of resistance to hydraulic fluid 7, needle stand 9, draw point core 10 Merlon or polyethylene manufacture.
Described Merlon or polyethylene are all product solds in the market, such as, visitd by Germany Ear company with trade name MAKROLON or Malaysia PETLIN company with trade name PETLIN Product sold.
According to the another kind of preferred implementation of the present invention, the cross section of draw point core 10 is semicircle.
Draw point core 10 cross section is that semicircular purpose is to accommodate as received basis liquid capsule (2).
The double lumen tube self-sealing venous detaining needle of the present invention can be according to routine intravenous vein using method Use, simply notice that preoperation inspection working solution matter leaks the most.
The present invention does not use anticoagulant heparin medicine " tube sealing ", heparin taboo person, any body constitution and the trouble of the state of an illness Person can use safely, it is not necessary to diagnosis and prescription, saves intelligence cost.
The double lumen tube self-sealing venous detaining needle of the present invention completes tube sealing under the conditions of working solution matter is totally-enclosed, Without puncturing calparine cap, enter blood circulation without rubber impurities and pollutant;Without by " just crimping Head " inject tube-sealing solution, reduce by a pollution section, extend the use time of remaining needle, save manpower Material resources.
Flexible steel in flat section tubing of the present invention avoids the nursing procedure on needle stand, is transferred to indwelling needle catheter without external force Cause the complication such as vein secondary damage, leakage, phlebitis, phlebothrombosis, extend making of remaining needle With the time, use manpower and material resources sparingly, increase the comfortableness of patient.
Double lumen tube self-sealing venous detaining needle of the present invention operation is extremely simple, and singlehanded pressing pressue device can Open " tube sealing " and release " tube sealing " operation, it is not necessary to conventional " positive pressure tube sealing " fine techniques operation, it is not necessary to Aspiration medicinal liquid and preparation tube-sealing solution, it is not necessary to consume disposable syringe, irrigator, save nursing procedure Step, improves nursing efficiency and quality.
The present invention does not use metal spring and other materials, it is to avoid spring valve, flap valve, piston and profit The various drawbacks of lubrication prescription.
The present invention uses the macromolecular material having been approved by and being widely used in medical treatment, it is not necessary to enter material Row certification and examination & approval.
[beneficial effect]
The invention has the beneficial effects as follows:
The present invention does not use anticoagulant heparin medicine " tube sealing ", therefore, double lumen tube self-sealing vein of the present invention Remaining needle is applicable to heparin taboo person and any body constitution and the patient of the state of an illness, uses safety, it is not necessary to doctor Diagnosis and prescription, save intelligence cost.
The double lumen tube self-sealing venous detaining needle of the present invention completes tube sealing under the conditions of working solution matter is totally-enclosed, Enter without rubber impurities and pollutant, extend the use time of remaining needle, use manpower and material resources sparingly.
The operation on needle stand avoided by flexibility tube sealing of the present invention, is transferred to indwelling needle catheter without external force and causes quiet The complication such as arteries and veins secondary damage, leakage, phlebitis, phlebothrombosis, extend the use time of remaining needle, Increase the comfortableness of patient.
Double lumen tube self-sealing venous detaining needle of the present invention operation is extremely simple, it is not necessary to aspiration medicinal liquid and preparation Tube-sealing solution, it is not necessary to consume disposable syringe, irrigator, saves nursing procedure step, improves nursing Efficiency and quality.
[accompanying drawing explanation]
Fig. 1 is double lumen tube self-sealing venous detaining needle structural representation;
Fig. 2 is needle stand 9 close-up schematic view;
Fig. 3 is draw point core cross section enlarged diagram;
Fig. 4 is the needle tubing enlarged diagram when transfusion;
Fig. 5 is the needle tubing enlarged diagram when " tube sealing ";
In figure:
1-inlying catheter, 2-as received basis liquid capsule pipe, 3-transfusion lumen, 4-needle point groove, 5-flexible steel in flat section tubing, 6-pressurizing block, the 7-capsule of resistance to hydraulic fluid, 8-snap close, 9-needle stand, 10-draw point core.
[detailed description of the invention]
The indwelling time of current routine intravenous vein is 3~4 days, often as plugging or venous injury Pull out in advance;Because the damage at skin and venipuncture has potential antibacterial infection risk, remaining needle 6 Insert new indwelling needle catheter in puncture elsewhere after should pulling out more than it, within 6 days, be conventional indwelling time The upper limit, the indwelling time of the present invention all can meet or exceed 6 day time, if any gnotobasis and application Antibiotic coordinates up to longer indwelling time.
The present invention is will be better understood that by following embodiment.
Embodiment 1: double lumen tube self-sealing venous detaining needle of the present invention
Double lumen tube self-sealing venous detaining needle of the present invention is by inlying catheter 1, as received basis liquid capsule pipe 2, transfusion Tube chamber 3, needle point groove 4, flexible steel in flat section tubing 5, pressurizing block 6, the capsule of resistance to hydraulic fluid 7, snap close 8, needle stand 9 Form with semi-circular cross-section draw point core 10.
Within as received basis liquid capsule pipe 2 is placed in inlying catheter 1, as received basis liquid capsule pipe 2 and inlying catheter 1 Needle point groove 4 is closed and constituted to terminal fusion, and as received basis liquid capsule pipe 2 other end passes needle stand 9 ectosome with soft One end of property connecting tube 5 is connected, and the other end of flexible steel in flat section tubing 5 is connected with the capsule of resistance to hydraulic fluid 7; By making its full rear enclosed defeated to as received basis liquid capsule pipe 2 saline injection or distilled water working solution matter Liquid tube chamber 3.Described flexible steel in flat section tubing 5 is avoided that nursing procedure external force causes intravenous to be led by needle stand The movement of pipe or scuffing vein blood vessel inner membrance.
It is placed in pressurizing block 6 in the cylindrical capsule of resistance to hydraulic fluid 7;When transfusion, pressurizing block 6 is opened, Working solution matter is allowed to be back to the capsule of resistance to hydraulic fluid 7;When needing tube sealing after stopping infusion, pressurizing block 6 is closed up, And pin snap close 8, allow working solution mass flow fill to as received basis liquid liquid capsule pipe 2, as received basis liquid liquid capsule pipe 2 Fill up transfusion lumen 3 and form closing.
The self-sealing venous indwelling using the present embodiment is carried out for the patient suffering from " heparin contraindication " Retention needle infusion and tube sealing, usual this kind of patient can only use normal saline tube sealing, and every 4 hours repeat one Secondary " tube sealing ", less than 3 days remaining needle retention time.The present invention operates extremely simple, in working solution matter Complete tube sealing under the conditions of totally-enclosed, enter blood circulation, without any pollution without any liquid or medicine Thing enters, and persistently uses 6 days without any vein secondary damage, leakage, phlebitis, phlebothrombosis etc. Complication, a tube sealing operation can maintain transfusion in second day, patient comfort.Do not consume once Property syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.
Embodiment 2: double lumen tube self-sealing venous detaining needle of the present invention
This embodiment is identical with the embodiment of embodiment 1, simply uses distilled water working solution matter, long The cube shape capsule of resistance to hydraulic fluid 7.
Use the self-sealing venous indwelling of the present embodiment for suffering from " intracranial hypertension, hypertension, heart failure, Nephropathy " patient carry out retention needle infusion and tube sealing, this kind of patient limits saline input, conventional washing pipe Sodium salt and liquid outside with the tube sealing meeting amount of imports enter health, use the patient of tube sealing of the present invention to avoid defeated Enter too much Yan Heshui.The present invention operates extremely simple, completes envelope under the conditions of working solution matter is totally-enclosed Pipe, enters blood circulation without any liquid and medicine, enters without any pollutant, persistently use 6 days Without the complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosis, patient comfort.Not yet There are consumption disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.
Embodiment 3: double lumen tube self-sealing venous detaining needle of the present invention
This embodiment is identical with the embodiment of embodiment 1, simply uses normal saline working solution matter, The oval capsule of resistance to hydraulic fluid 7.
Use the double lumen tube self-sealing venous indwelling of the present embodiment for " long-term infusion " or " high-leveled and difficult quiet Arteries and veins puncture " patient carry out retention needle infusion and tube sealing, usual this kind of patient may be used for puncture and defeated The blood vessel of liquid is difficult to find that, blood vessel is through repeated localised puncture degeneration, and each venipuncture is the most tired Difficulty, patient's angor, the most each venous transfusion passage all should keep clear, and the use present invention can To extend the use time of infusion channel as far as possible.The present invention operates extremely simple, entirely seals in working solution matter Complete tube sealing under the conditions of closing, enter without any pollutant, persistently use within 10 days, damage without any vein secondary The complication such as wound, leakage, phlebitis, phlebothrombosis, patient comfort.Do not consume disposable injection Device, irrigator, save nursing procedure step, improves nursing efficiency and quality.
Embodiment 4: double lumen tube self-sealing venous detaining needle
This embodiment is identical with the embodiment of embodiment 1, simply uses distilled water working solution matter, long The circular capsule of resistance to hydraulic fluid 7.
Use the double lumen tube self-sealing venous indwelling of the present embodiment for " medicine may produce with normal saline Incompatibility " patient carry out retention needle infusion and tube sealing, the present invention uses distilled water as received basis Liquid does not has sodium ion to infiltrate into the potential risk of transfusing chamber, operates extremely simple, entirely seals in working solution matter Complete tube sealing under the conditions of closing, enter without any pollutant, persistently use within 6 days, damage without any vein secondary The complication such as wound, leakage, phlebitis, phlebothrombosis, patient comfort.Do not consume disposable injection Device, irrigator, save nursing procedure step, improves nursing efficiency and quality.

Claims (7)

1. a double lumen tube self-sealing venous detaining needle, it is characterised in that described self-sealing venous detaining needle is mainly made up of inlying catheter (1), as received basis liquid capsule pipe (2), transfusion lumen (3), needle point groove (4), flexible steel in flat section tubing (5), pressurizing block (6), the capsule of resistance to hydraulic fluid (7), snap close (8), needle stand (9), draw point core (10);
Within as received basis liquid capsule pipe (2) is placed in inlying catheter (1), as received basis liquid capsule pipe (2) and inlying catheter (1) terminal fusion are closed and constitute needle point groove (4), as received basis liquid capsule pipe (2) other end is connected through needle stand (9) ectosome with one end of flexible steel in flat section tubing (5), and the other end of flexible steel in flat section tubing (5) is connected with the capsule of resistance to hydraulic fluid (7);
The capsule of resistance to hydraulic fluid (7) is placed in pressurizing block (6);When transfusion, pressurizing block (6) is opened, allows working solution matter be back to the capsule of resistance to hydraulic fluid (7);When needing tube sealing after stopping infusion, pressurizing block (6) being closed up, and pin snap close (8), allow working solution mass flow to as received basis liquid capsule (2), full transfusing chamber (3) space that occupies of as received basis liquid capsule (2) forms closing.
Double lumen tube self-sealing venous detaining needle the most according to claim 1, it is characterised in that make its full rear enclosed transfusion lumen (3) by injecting working solution matter to as received basis liquid capsule pipe (2).
Double lumen tube self-sealing venous detaining needle the most according to claim 1, it is characterised in that described flexible steel in flat section tubing (5) is avoided that nursing procedure external force causes the movement of intravenous catheter by needle stand or scratches vein blood vessel inner membrance.
Double lumen tube self-sealing venous detaining needle the most according to claim 1, it is characterised in that the described capsule of resistance to hydraulic fluid (7) is cylindrical or cuboid.
The double lumen tube self-sealing venous detaining needle capsule of resistance to hydraulic fluid the most according to claim 1, it is characterised in that described working solution matter is normal saline or distilled water.
Double lumen tube self-sealing venous detaining needle the most according to claim 1, it is characterized in that inlying catheter (1), as received basis liquid capsule pipe (2), flexible steel in flat section tubing (5), the capsule of resistance to hydraulic fluid (7), needle stand (9), tube for transfusion (10) Merlon or polyethylene manufacture, can elastic dilatation after wherein as received basis liquid capsule pipe (2) is full.
Double lumen tube self-sealing venous detaining needle the most according to claim 4, it is characterised in that the cross section of draw point core (10) is semicircle.
CN201410789774.7A 2014-12-18 2014-12-18 A kind of double lumen tube self-sealing venous detaining needle CN104399145B (en)

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CN104721913A (en) * 2015-04-10 2015-06-24 邓杜娟 Self-sealing type venous indwelling needle and production method thereof
CN104826196B (en) * 2015-05-29 2018-05-01 邓杜娟 Liquid capsule self-sealing venous detaining needle in a kind of needle stand
CN104922761B (en) * 2015-06-24 2018-03-20 湛江健力源医疗用品有限公司 A kind of remaining needle with double duct
CN104922760B (en) * 2015-06-24 2018-03-20 湛江健力源医疗用品有限公司 A kind of remaining needle with flow regulator
CN105013045A (en) * 2015-08-21 2015-11-04 淄博侨森医疗用品有限公司 Positive-pressure continuous liquid supply device, venous indwelling needle and central venous catheter

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CN103599580A (en) * 2013-11-19 2014-02-26 苏州林华医疗器械有限公司 Continuous positive pressure venous indwelling needle
CN203915654U (en) * 2014-06-18 2014-11-05 江西洪达医疗器械集团有限公司 A kind of venous detaining needle with malleation anti-backflow device
CN204352294U (en) * 2014-12-18 2015-05-27 邓杜娟 A kind of double lumen tube self-sealing venous detaining needle

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