CN204319422U - A kind of coaxial trocar sheath self-sealing venous detaining needle - Google Patents

A kind of coaxial trocar sheath self-sealing venous detaining needle Download PDF

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Publication number
CN204319422U
CN204319422U CN201420807545.9U CN201420807545U CN204319422U CN 204319422 U CN204319422 U CN 204319422U CN 201420807545 U CN201420807545 U CN 201420807545U CN 204319422 U CN204319422 U CN 204319422U
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China
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tube
needle
capsule
sealing
venous detaining
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CN201420807545.9U
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Chinese (zh)
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邓杜娟
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邓杜娟
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Abstract

This utility model relates to a kind of coaxial trocar sheath self-sealing venous detaining needle, and described self-sealing venous detaining needle is by 12 forming with liquid capsule pipeline 13 at the bottom of outer tube 1, interior pipe 2, as received basis liquid capsule 3, transfusing chamber 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, tube for transfusion 10, needle point groove 11, pipe.The operation of this utility model coaxial trocar sheath self-sealing venous detaining needle is extremely simple, tube sealing is completed under the totally-enclosed condition of working solution matter, enter without any pollutant, continue to use without complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosises, patient comfort.Do not consume disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.

Description

A kind of coaxial trocar sheath self-sealing venous detaining needle
[technical field]
This utility model belongs to technical field of medical instruments.More specifically, this utility model relates to a kind of coaxial trocar sheath self-sealing 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 use amount is 3,000,000,000 covers, venous detaining needle consumption more than 300,000,000.The product mainly produced by the joint venture of U.S. company BD, joint venture of Bei Lang company and Shandong Wei Gao company, Suzhou Lin Hua company etc.
Venous detaining needle is also called venous catheter needle, and it is made up of rustless steel nook closing member, trocar sheath and plastics needle stand.During puncture, rustless steel nook closing member is thrust in blood vessel together with trocar sheath, after intravasation, extract rustless steel nook closing member out, allow soft trocar sheath stay and infuse in the blood vessel.Be flexible pipe owing to being retained in intravenous, avoid the damage of draw point to blood vessel, patient can be with pin gentle activity.Venous detaining needle is applicable to the puncture of any position, one-time puncture can continuously or interval repeatedly, many days use, alleviate the misery of patient's repeated localised puncture, alleviate the workload of nursing staff, dark being protected suffers from welcome clinically, saves a large amount of medical treatment and nursing manpower and materials simultaneously, there is Health Economics meaning, therefore the Nurses Association of China advocates use retention needle infusion, advocates " draw point zero tolerance " in demonstration hospital at present, advises that the infusion treatment of more than 2 times all uses remaining needle.
Venous detaining needle does not need to pull out after infusion-completed, use again when waiting until transfusion next time, due to vein blood back after stopping infusion, remaining needle plugging, therefore there is dispute in indwelling time length always, administrative department of public health, Quality Control department of hospital and remaining needle producer all advocate that indwelling time is no more than 3-4 days.
Venous detaining needle plugging is because blood backflow enters in catheter lumen, the blood coagulation substances such as the platelet in blood are in the conduit intravascular coagulation of low flow velocity, thrombosis and then plugging, for ensureing that conduit can be reused and must prevent plugging by tube sealing technology, specially develop a series of apparatus, medicine, operating technology and " specification ", " standard ".The U.S. is upgraded once " INS venous transfusion practice standard " by venous transfusion association for every 4 years, " the venous transfusion practice standard version in 2011 " of current use, China's national health and Family Planning Committee have issued " intravenous therapy nursing technical operation specification " on November 14th, 2013." tube sealing " has become a specific term in medical treatment and nursing.
Current standard method " tube sealing " method carries out " tube sealing " for using normal saline or heparin in sealing liquid to inject in conduit, its principle is hypothesis venous pressure is resting state, after normal saline or other tube-sealing solutions occupy conduit cavity space as working solution matter, blood and hemostatic composition thereof can not be entered in conduit; Secondly the normal saline in conduit can dilute the blood coagulation substance entered, and delays blood coagulation and thrombosis.The method can not avoid blood to enter conduit, and its reason is as follows: one, because breathing and heartbeat cause human peripheral vein pressure to be fluctuation, causes blood to enter in conduit and forms " blood back "; Its two, the platelet in blood, cell and blood coagulation substance form sludged blood after diffusing into and being filled in amount that " tube-sealing solution " in conduit reach certain.
This " tube sealing " needs to use the equipment such as " positive pressure connector ", " tube-sealing solution ", " rinsing tube sealing syringe ", is completed by meticulous technical operations such as " three subpulse formulas are injected " and " positive pressure tube sealings ".This method increase the workload of nurse; Disposable tube sealing irrigating syringe forms resource waste, adds Biohazard Waste and processing cost, is unfavorable for environmental protection.
Due to the effective time about 4 hours of " tube sealing " of normal saline, " tube sealing " should can only be 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, and nurse can not determine to use, because this increasing the workload of doctor; In addition, a part of patient can not use heparin medicinal liquid tube sealing because of body constitution and the state of an illness, and every 4 hours of this kind of patient " tube sealing " once, increases nursing work load, and impact sleep is had a rest, and affects patient comfort.
Current have a kind of method using mechanical piston to close or open needle stand place conduit at indwelling needle place to carry out the remaining needle of " tube sealing ", regardless of its operation principle, all form " valve " at needle stand place, time " tube sealing ", valve-off causes intravenous conduit to form a long and narrow dead space, blood coagulation substance in blood enters this section without in flow velocity dead space, and blood coagulation substance is attached to tube wall blood coagulation and forms plugging.Secondly on needle stand, external force of operated piston is passed to intravenous conduit, catheter displacement, comes off and scratches tunica intima, causes leakage of infusing, infuses unsuccessfully, phlebitis, phlebothrombosis etc.
Separately have a kind of self-enclosed remaining needle, its needle stand inner chamber is cut off part and is isolated into plemum and transfusing chamber two parts, and liquid energy automatic slowly during stopping infusion in plemum flows into transfusing chamber and reaches " tube sealing ".Principle is the same with normal saline " tube sealing ", the method just reduces " tube sealing " operation that nurse injects tube-sealing solution, tip due to inlying catheter is open, still return back out existing " blood back " and platelet and blood coagulation substance with the pressure oscillation of breathing and heart beating brings to enter, still can blood coagulation plugging.
Separately have other method arranging counterflow-preventing machinery flap valve, the unidirectional opening of duck-beak type at catheter tip, because " tube sealing " effect is uncertain, listing not recommended use in " venous transfusion practice standard " for many years, these products are commercially without trace.
Therefore, the present inventor, on the basis of summing up prior art, by lot of experiments, completes this utility model finally.
[utility model content]
[technical problem that will solve]
The purpose of this utility model is to provide a kind of coaxial trocar sheath self-sealing venous detaining needle.
[technical scheme]
This utility model is achieved through the following technical solutions.
This utility model relates to a kind of coaxial trocar sheath self-sealing venous detaining needle, and it comprises self-sealing venous detaining needle upper part A and end portion B thereof.
Described self-sealing venous detaining needle primarily of: at the bottom of outer tube 1, interior pipe 2, as received basis liquid capsule 3, transfusing chamber 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, tube for transfusion 10, needle point groove 11, pipe 12 with the composition such as liquid capsule pipeline 13;
Self-sealing venous detaining needle upper part A is made up of outer tube 1 and interior pipe 2, wherein interior pipe 2 is placed within outer tube 1, interior pipe 2 inwall forms transfusing chamber 4, and interior pipe 2 outer wall and outer tube 1 terminal fusion are closed and form needle point groove 11, and the lower end of interior pipe 2 and outer tube 1 is merged and closedly to be formed at the bottom of pipe 12; Annular lacuna between interior pipe 2 and outer tube 1 forms as received basis liquid capsule 3;
Self-sealing venous detaining needle end portion B is made up of with liquid capsule pipeline 13 needle stand 9 ectosome, interior pipe 2, tube for transfusion 10, and the center of needle stand 9 is interior pipes 2, needle stand side be provided with tube for transfusion 10, one end of tube for transfusion 10 is connected with interior pipe 2;
Liquid capsule pipeline 13 one end in needle stand 12 to be connected with as received basis liquid capsule 3 at the bottom of pipe, and the other end is connected with one end of flexible steel in flat section tubing 5 through needle stand 9 ectosome, 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 infusing, pressurizing block 6 being 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 closed up, and pin snap close 8, allow working solution matter flow to as received basis liquid capsule 3, after as received basis liquid capsule 3 is full, extruding transfusing chamber 4 is formed and closes.
According to a kind of preferred implementation of the present utility model, make its full rear enclosed tube for transfusion 4 by injecting working solution matter to as received basis liquid capsule 3.
According to another kind of preferred implementation of the present utility model, described flexible steel in flat section tubing 5 can avoid nursing procedure external force cause the movement of intravenous catheter by needle stand or scratch vein blood vessel inner membrance.
According to another kind of preferred implementation of the present utility model, the described capsule of resistance to hydraulic fluid 7 is cylindrical, cuboid, ellipse or circular.
According to another kind of preferred implementation of the present utility model, the working solution matter in the described capsule of resistance to hydraulic fluid 7 is normal saline or distilled water.
According to another kind of preferred implementation of the present utility model, outer tube 1, interior pipe 2, as received basis liquid capsule 3, flexible steel in flat section tubing 5, the capsule of resistance to hydraulic fluid 7, needle stand 9, tube for transfusion 10 manufacture with liquid capsule pipeline 13 Merlon or polyethylene, and wherein, pipe 2 can elastic dilatation after filling.
According to another kind of preferred implementation of the present utility model, liquid capsule pipeline 13 is 100-120 ° with the angle of flexible steel in flat section tubing 5.
According to another kind of preferred implementation of the present utility model, interior pipe 2 is 100-130 ° with the angle of tube for transfusion 10.
In more detail this utility model will be described below.
This utility model is the physical method allowing working solution matter capsule occupy space in conduit, fluid properties makes working solution capsule can fill up each gap of indwelling needle catheter transfusing chamber, shutoff from catheter tip, gap is not stayed not stay dead space towards intravenous conduit, thorough partition blood and conduit, meet physiology and medicine principle.
Different with saline occupy-place tube sealing from the dilution anticoagulant tube sealing of normal saline, utility model works liquid capsule occupies the physical method in space in conduit does not have " working solution matter " to enter blood circulation of human body, without the need to carrying out the control of pharmaceutically grade to " working solution matter ".
This utility model relates to a kind of coaxial trocar sheath self-sealing venous detaining needle, and it comprises self-sealing venous detaining needle upper part A and end portion B thereof.
Described self-sealing venous detaining needle is by 12 forming with liquid capsule pipeline 13 at the bottom of outer tube 1, interior pipe 2, as received basis liquid capsule 3, transfusing chamber 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, tube for transfusion 10, needle point groove 11, pipe.The concrete structure of this utility model coaxial trocar sheath self-sealing venous detaining needle is see accompanying drawing 1.
Self-sealing venous detaining needle upper part A is made up of outer tube 1 and interior pipe 2, wherein interior pipe 2 is placed within outer tube 1, interior pipe 2 inwall forms transfusing chamber 4, and interior pipe 2 outer wall and outer tube 1 terminal fusion are closed and form needle point groove 11, and the lower end of interior pipe 2 and outer tube 1 is merged and closedly to be formed at the bottom of pipe 12; Annular lacuna between interior pipe 2 and outer tube 1 forms as received basis liquid capsule 3.
Outer tube 1 and interior pipe 2 Merlon or polyethylene manufacture, and the as received basis liquid capsule that wherein, pipe 2 is formed can elastic dilatation after filling.
Described self-sealing venous detaining needle makes its full rear enclosed transfusion lumen 4 by injecting working solution matter to as received basis liquid capsule pipe 3, and described as received basis liquid capsule 3 is positioned at outside transfusion lumen 4.According to this utility model; every as received basis liquid capsule 3 is set outside transfusion lumen 4; after full by as received basis liquid capsule 3, extruding transfusion lumen 4 reaches closed transfusion lumen 4; no matter its as received basis liquid capsule 3 is the longitudinal overall length of transfusion lumen 4 or partial-length; no matter its liquid capsule 2 is arranged at the tip of transfusion lumen 3 or a certain section; no matter its as received basis liquid capsule 3 whether all-round or part around transfusion lumen 4 cross section, such as received basis liquid capsule is also all in protection domain of the present utility model.
Working solution matter in the described capsule of resistance to hydraulic fluid 7 is normal saline or distilled water.According to this utility model; every have with normal saline or distilled water character is close, also can be used as working solution matter of the present utility model to human body without any other liquid endangered; the aqueous solutions such as such as ethanol, sodium citrate, Taurolidine, ethylenediaminetetraacetic acid also can be used as working solution matter of the present utility model, and these liquid are also all within protection domain of the present utility model.
Self-sealing venous detaining needle end portion B is made up of with liquid capsule pipeline 13 needle stand 9 ectosome, interior pipe 2, tube for transfusion 10, and the center of needle stand 9 is interior pipes 2, needle stand side be provided with tube for transfusion 10, one end of tube for transfusion 10 is connected with interior pipe 2.
According to this utility model, interior pipe 2 is generally connected according to angle 100-130 ° with tube for transfusion 10.Certainly, this angle can suitably adjust according to actual needs, though angle a little more greatly or less be also acceptable.
Needle stand 9 close-up schematic view that this utility model uses is shown in accompanying drawing 2; It is product sold in the market, such as by Bibi Medical Apparatus Co., Ltd., Suzhou with the closed remaining needle of trade name " fearful agate ", Weigao Group Co., Ltd. with the disposable vein remaining needle of trade name " clean auspicious ", or Linhua Medical Appliances Co., Ltd., Suzhou sell " pipe-blocking-proof remaining needle " product.
In this utility model, needle stand 9, tube for transfusion 10 manufacture with liquid capsule pipeline 13 Merlon or polyethylene.Described Merlon or polyethylene are all product solds in the market, such as by Bayer A.G with trade name MAKROLON or Malaysian PETLIN company with trade name PETLIN product sold.
Liquid capsule pipeline 13 one end in needle stand 12 to be connected with as received basis liquid capsule 3 at the bottom of pipe, and the other end is connected with one end of flexible steel in flat section tubing 5 through needle stand 9 ectosome, and the other end of flexible steel in flat section tubing 5 is connected with the capsule of resistance to hydraulic fluid 7.
In this utility model, flexible steel in flat section tubing 5, the capsule of resistance to hydraulic fluid 7 Merlon or polyethylene manufacture.
Described flexible steel in flat section tubing 5 can avoid nursing procedure external force cause the movement of intravenous catheter by needle stand or scratch vein blood vessel inner membrance.
The described capsule of resistance to hydraulic fluid 7 is cylindrical, cuboid, ellipse or circular, and the shape of employing is determined according to actual service condition, to make the ability with certain resorption working solution matter.The capsule of resistance to hydraulic fluid 7 is equipped with described working solution matter, and its filling weight is determined according to service condition.The capsule of resistance to hydraulic fluid 7 is placed in pressurizing block 6; When infusing, pressurizing block 6 being 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 closed up, and pin snap close 8, allow working solution matter flow to as received basis liquid capsule 3, as received basis liquid capsule 3 extrudes transfusing chamber 4 and is formed closed.When infusing, needle tubing enlarged diagram is shown in accompanying drawing 3; When " tube sealing ", needle tubing enlarged diagram is shown in accompanying drawing 4;
According to this utility model, liquid capsule pipeline 13 and flexible steel in flat section tubing 5 are normally connected according to angle 100-120 °.Certainly, this angle can appropriately adjust according to actual needs, and a little even greatly or less also should be allow.
Coaxial trocar sheath self-sealing venous detaining needle of the present utility model can conveniently venous detaining needle using method use, and just notices whether preoperation inspection working solution matter leaks.。
This utility model does not use anticoagulant heparin medicine " tube sealing ", and the patient of heparin taboo person, any body constitution and the state of an illness can use safely, without the need to diagnosis and prescription, saves intelligence cost.
Coaxial trocar sheath self-sealing venous detaining needle of the present utility model completes tube sealing under the totally-enclosed condition of working solution matter, without the need to the calparine cap that punctures, enters blood circulation without rubber impurities and pollutant; Without the need to injecting tube-sealing solution by " positive pressure connector ", reducing by a pollution section, extending the service time of remaining needle, using manpower and material resources sparingly.
The operation on needle stand avoided by the flexible tube sealing of this utility model, be passed to indwelling needle catheter without external force and cause the complication such as vein secondary damage, leakage, phlebitis, phlebothrombosis, extend the service time of remaining needle, use manpower and material resources sparingly, increase the comfortableness of patient.
The operation of this utility model coaxial trocar sheath self-sealing venous detaining needle is extremely simple, singlehanded pressing pressue device can be opened " tube sealing " and remove " tube sealing " operation, without the need to conventional " positive pressure tube sealing " fine techniques operation, without the need to aspiration medicinal liquid and preparation tube-sealing solution, without the need to consuming disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.
This utility model does not use metal spring and other materials, avoids the various drawbacks of spring valve, flap valve, piston and lubricant.
This utility model uses have been ratified and has been widely used in medical macromolecular material, without the need to carrying out certification and examination & approval to material.
[beneficial effect]
The beneficial effects of the utility model are:
This utility model does not use anticoagulant heparin medicine " tube sealing ", and therefore, this utility model coaxial trocar sheath self-sealing venous detaining needle is applicable to the patient of heparin taboo person and any body constitution and the state of an illness, use safety, without the need to diagnosis and prescription, saves intelligence cost.
Coaxial trocar sheath self-sealing venous detaining needle of the present utility model completes tube sealing under the totally-enclosed condition of working solution matter, enters without rubber impurities and pollutant, extends the service time of remaining needle, uses manpower and material resources sparingly.
The operation on needle stand avoided by the flexible tube sealing of this utility model, is passed to indwelling needle catheter and causes the complication such as vein secondary damage, leakage, phlebitis, phlebothrombosis, extend the service time of remaining needle, increase the comfortableness of patient without external force.
The operation of this utility model coaxial trocar sheath self-sealing venous detaining needle is extremely simple, without the need to aspiration medicinal liquid and preparation tube-sealing solution, without the need to consuming disposable syringe, irrigator, saving nursing procedure step, improving nursing efficiency and quality.
[accompanying drawing explanation]
Fig. 1 is coaxial trocar sheath self-sealing venous detaining needle structural representation;
Fig. 2 is needle stand 9 close-up schematic view;
Fig. 3 is the needle tubing enlarged diagram when infusing;
Fig. 4 is the needle tubing enlarged diagram when " tube sealing ";
In figure:
With 13-liquid capsule pipeline at the bottom of the interior pipe of 1-outer tube, 2-, 3-as received basis liquid capsule, 4-transfusing chamber, 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-tube for transfusion, 11-needle point groove, 12-pipe.
[detailed description of the invention]
The indwelling time of current routine intravenous vein is 3 ~ 4 days, often because plugging or venous injury are pulled out in advance; Because the damage of skin and venipuncture place has potential bacteriological infection risk, remaining needle within more than 6 days, should pull out after elsewhere puncture insert new indwelling needle catheter, within 6 days, be the upper limit of conventional indwelling time, indwelling time of the present utility model all can meet or exceed 6 day time.Coordinate if any gnotobasis and application antibiotic and can reach longer indwelling time.
This utility model can be understood better by following embodiment.
Embodiment 1: this utility model coaxial trocar sheath self-sealing venous detaining needle
Coaxial trocar sheath self-sealing venous detaining needle comprises self-sealing venous detaining needle upper part A and end portion B thereof, and described self-sealing venous detaining needle is by 12 forming with liquid capsule pipeline 13 at the bottom of outer tube 1, interior pipe 2, as received basis liquid capsule 3, transfusing chamber 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, tube for transfusion 10, needle point groove 11, pipe.
Self-sealing venous detaining needle upper part A is made up of outer tube 1 and interior pipe 2, wherein interior pipe 2 is placed within outer tube 1, interior pipe 2 inwall forms transfusing chamber 4, and interior pipe 2 outer wall and outer tube 1 terminal fusion are closed and form needle point groove 11, and the lower end of interior pipe 2 and outer tube 1 is merged and closedly to be formed at the bottom of pipe 12; Annular lacuna between interior pipe 2 and outer tube 1 forms as received basis liquid capsule 3, and interior pipe 2 can elastic dilatation after transfusion is full.By making its full rear enclosed tube for transfusion 4 to as received basis liquid capsule 3 saline injection working solution matter.
Self-sealing venous detaining needle end portion B is made up of with liquid capsule pipeline 13 needle stand 9 ectosome, interior pipe 2, tube for transfusion 10, and the center of needle stand 9 is interior pipes 2, needle stand side be provided with tube for transfusion 10, one end of tube for transfusion 10 is connected with interior pipe 2.Interior pipe 2 is 120 ° with the angle of tube for transfusion 10.
Liquid capsule pipeline 13 one end in needle stand 12 to be connected with as received basis liquid capsule 3 at the bottom of pipe, and the other end is connected with one end of flexible steel in flat section tubing 5 through needle stand 9 ectosome, and the other end of flexible steel in flat section tubing 5 is connected with the cylindrical capsule of resistance to hydraulic fluid 7.Described flexible steel in flat section tubing 5 can avoid nursing procedure external force cause the movement of intravenous catheter by needle stand or scratch vein blood vessel inner membrance.Liquid capsule pipeline 13 is 115 ° with the angle of flexible steel in flat section tubing 5.
The capsule of resistance to hydraulic fluid 7 is placed in pressurizing block 6; When infusing, pressurizing block 6 being 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 closed up, and pin snap close 8, allow working solution matter flow to as received basis liquid capsule 3, the full extruding transfusing chamber 4 of as received basis liquid capsule 3 is formed to be closed.
Use the self-sealing venous indwelling of the present embodiment to carry out retention needle infusion and tube sealing for the patient suffering from " heparin contraindication ", usual this kind of patient can only use normal saline tube sealing, and every 4 hours repeat once " tube sealing ", less than 3 days remaining needle retention time.This utility model operation is extremely simple, tube sealing is completed under the totally-enclosed condition of working solution matter, blood circulation is entered without any liquid or medicine, enter without any pollutant, continue use 6 days without complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosises, a tube sealing operation can be maintained to transfusion in second day, patient comfort.Do not consume disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.
Embodiment 2: this utility model coaxial trocar sheath self-sealing venous detaining needle
This embodiment is identical with the embodiment of embodiment 1, just uses distilled water working solution matter, the cuboid capsule of resistance to hydraulic fluid 7, and interior pipe 2 is 130 ° with the angle of tube for transfusion 10.Liquid capsule pipeline 13 is 100 ° with the angle of flexible steel in flat section tubing 5.
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 and tube sealing sodium salt outside the amount of imports and liquid can enter health, use the patient of this utility model tube sealing to avoid inputting too much Yan Heshui.This utility model operation is extremely simple, under the totally-enclosed condition of working solution matter, complete tube sealing, enter blood circulation without any liquid and medicine, enter without any pollutant, continue use 6 days without complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosises, patient comfort.Do not consume disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.
Embodiment 3: this utility model coaxial trocar sheath self-sealing venous detaining needle
This embodiment is identical with the embodiment of embodiment 1, just uses normal saline working solution matter, the oval capsule of resistance to hydraulic fluid 7, and interior pipe 2 is 100 ° with the angle of tube for transfusion 10.Liquid capsule pipeline 13 is 108 ° with the angle of flexible steel in flat section tubing 5.
Use the present embodiment double lumen tube self-sealing venous indwelling for " long-term infusion " or " high-leveled and difficult venipuncture " patient carry out retention needle infusion and tube sealing, the blood vessel that usual this kind of patient may be used for puncturing and infusing is difficult to find, blood vessel is through repeated localised puncture degeneration, each venipuncture is the devil, patient's angor, therefore each venous transfusion passage all should keep clear, and uses this utility model can extend the service time of infusion channel as far as possible.This utility model operation is extremely simple, completes tube sealing, enter without any pollutant under the totally-enclosed condition of working solution matter, continues use 10 days without complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosises, patient comfort.Do not consume disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.
Embodiment 4: coaxial trocar sheath self-sealing venous detaining needle
This embodiment is identical with the embodiment of embodiment 1, just uses distilled water working solution matter, the Long Circle capsule of resistance to hydraulic fluid 7, and interior pipe 2 is 110 ° with the angle of tube for transfusion 10.Liquid capsule pipeline 13 is 120 ° with the angle of flexible steel in flat section tubing 5.
The double lumen tube self-sealing venous indwelling of the present embodiment is used to carry out retention needle infusion and tube sealing for the patient of " medicine and normal saline may produce incompatibility ", this utility model uses distilled water not have sodium ion to infiltrate into the potential risk of transfusing chamber as received basis liquid, operate extremely simple, tube sealing is completed under the totally-enclosed condition of working solution matter, enter without any pollutant, continue use 6 days without complication such as any vein secondary damage, leakage, phlebitis, phlebothrombosises, patient comfort.Do not consume disposable syringe, irrigator, save nursing procedure step, improve nursing efficiency and quality.

Claims (8)

1. a coaxial trocar sheath self-sealing venous detaining needle, it mainly comprises self-sealing venous detaining needle upper part (A) and end portion (B) thereof, it is characterized in that described self-sealing venous detaining needle is made up of (12) at the bottom of outer tube (1), interior pipe (2), as received basis liquid capsule (3), transfusing chamber (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), tube for transfusion (10), needle point groove (11), pipe and liquid capsule pipeline (13);
Self-sealing venous detaining needle upper part (A) is made up of outer tube (1) and interior pipe (2), wherein, pipe (2) is placed within outer tube (1), interior pipe (2) inwall forms transfusing chamber (4), interior pipe (2) outer wall and outer tube (1) terminal fusion are closed and are formed needle point groove (11), and the lower end of interior pipe (2) and outer tube (1) is merged and closedly formed (12) at the bottom of pipe; Annular lacuna between interior pipe (2) and outer tube (1) forms as received basis liquid capsule (3);
Self-sealing venous detaining needle end portion (B) is made up of with liquid capsule pipeline (13) needle stand (9) ectosome, interior pipe (2), tube for transfusion (10), the center of needle stand (9) is interior pipe (2), needle stand side be provided with tube for transfusion (10), one end of tube for transfusion (10) is connected with interior pipe (2);
Liquid capsule pipeline (13) one end in needle stand (12) at the bottom of pipe is connected with as received basis liquid capsule (3), the other end is connected with one end of flexible steel in flat section tubing (5) through needle stand (9) ectosome, 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 infusing, pressurizing block (6) being 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 pin snap close (8), allow working solution matter flow to as received basis liquid capsule (3), as received basis liquid capsule (3) extruding transfusing chamber (4) is formed to be closed.
2. coaxial trocar sheath self-sealing venous detaining needle according to claim 1, is characterized in that making its full rear enclosed tube for transfusion (4) by injecting working solution matter to as received basis liquid capsule (3).
3. coaxial trocar sheath self-sealing venous detaining needle according to claim 1, is characterized in that described flexible steel in flat section tubing (5) can avoid nursing procedure external force cause the movement of intravenous catheter by needle stand or scratch vein blood vessel inner membrance.
4. coaxial trocar sheath self-sealing venous detaining needle according to claim 1, is characterized in that the described capsule of resistance to hydraulic fluid (7) is cylindrical, cuboid, ellipse or circular.
5. the coaxial trocar sheath self-sealing venous detaining needle capsule of resistance to hydraulic fluid according to claim 1, is characterized in that the working solution matter in the described capsule of resistance to hydraulic fluid (7) is normal saline or distilled water.
6. coaxial trocar sheath self-sealing venous detaining needle according to claim 1, it is characterized in that outer tube (1), interior pipe (2), as received basis liquid capsule (3), flexible steel in flat section tubing (5), the capsule of resistance to hydraulic fluid (7), needle stand (9), tube for transfusion (10) manufacture with liquid capsule pipeline (13) Merlon or polyethylene, wherein, pipe (2) is at full rear elastic dilatation.
7. coaxial trocar sheath self-sealing venous detaining needle according to claim 1, is characterized in that liquid capsule pipeline (13) is 100-120 ° with the angle of flexible steel in flat section tubing (5).
8. coaxial trocar sheath self-sealing venous detaining needle according to claim 1, is characterized in that interior pipe (2) is 100-130 ° with the angle of tube for transfusion (10).
CN201420807545.9U 2014-12-18 2014-12-18 A kind of coaxial trocar sheath self-sealing venous detaining needle CN204319422U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104399146A (en) * 2014-12-18 2015-03-11 邓杜娟 Self-sealing venous indwelling needle provided with coaxial outer casing tube
CN106237441A (en) * 2016-08-31 2016-12-21 于燕 A kind of multifunctional coaxial trocar sheath self-sealing venous indwelling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104399146A (en) * 2014-12-18 2015-03-11 邓杜娟 Self-sealing venous indwelling needle provided with coaxial outer casing tube
CN104399146B (en) * 2014-12-18 2016-09-28 邓杜娟 A kind of coaxial trocar sheath self-sealing venous detaining needle
CN106237441A (en) * 2016-08-31 2016-12-21 于燕 A kind of multifunctional coaxial trocar sheath self-sealing venous indwelling device

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