CN103170036A - Venous indwelling needle with sacculus valve - Google Patents
Venous indwelling needle with sacculus valve Download PDFInfo
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- CN103170036A CN103170036A CN 201310068003 CN201310068003A CN103170036A CN 103170036 A CN103170036 A CN 103170036A CN 201310068003 CN201310068003 CN 201310068003 CN 201310068003 A CN201310068003 A CN 201310068003A CN 103170036 A CN103170036 A CN 103170036A
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Abstract
Provided is a venous indwelling needle with a sacculus valve. The venous indwelling needle with the sacculus valve is formed by a combination of a puncture needle, the venous indwelling needle and the sacculus valve, wherein the puncture needle is composed of a puncture needle body, a puncture needle base and a sheath, and the venous indwelling needle is composed of an indwelling needle flexible pipe, a puncture needle guiding pipe, an indwelling needle base and a sealing plug. Thin film crack valves are arranged inside two ends of the sacculus valve, one-way liquid flow toward the indwelling needle direction can be formed, and backflow is prevented. After the venous indwelling needle with the sacculus valve is used, the sacculus valve is extruded, the indwelling flexible pipe can be washed rapidly, and positive pressure is formed. Blood is prevented from flowing back and entering the indwelling flexible pipe, and hereby an antithrombotic and anticoagulant effect is formed. A heparin sealing pipe is not needed, and structures such as a heparin cap or a positive pressure needle-free connector are also not needed. Even if a pipeline is washed, operation with an injector is also not needed. The venous indwelling needle with the sacculus valve has the advantages of being concise in structure, convenient and fast to use, capable of conducting needle-free (transfusion) connection, safe, reliable, low in cost, capable of lowering expenses and easy to popularize.
Description
(1) technical field
The present invention relates to a kind of medical apparatus and instruments for infusion liquid, specifically a kind of for after venipuncture procedure and puncture thereof in blood vessel the venous detaining needle with saccule valve of indwelling phase infusion liquid in the blood vessel.
(2) background technology
In clinical, often because of periodic treatment plan, repeatedly puncture vessel carries out infusion treatment; After the repeatedly chemotherapy to tumor, after the permanent treatment of cardiovascular and cerebrovascular disease and children's, old people's blood vessel (sclerosis, fragility increase) when the puncture condition is poor, blood vessel is because repeatedly puncture is damaged, can increase patient painful difficult with puncture procedure, can destroy because of the repeatedly puncture of showing shallow blood vessel even that (the blood vessel injury section after puncture can form cicatrix, blood flow is logical difficult more in a short time), and the use of can not again puncturing, affect infusion treatment, finally need the capable puncture and intubation art of deep vessels, could infusion treatment.The damage that causes blood vessel for avoiding repeatedly puncturing and minimizing patient are painful, also for alleviating nurse operation intensity, it is theoretical according to the active infusion treatment that (Technological Economy need satisfy quality of life and patient's impression, clinical venous detaining needle (pipe) technology of generally using.The venous detaining needle of present clinical use is comprised of heparin (sealing) cap, puncture needle, Paracentesis needle holder, indwelling soft tube pin, indwelling needle, indwelling needle-protecting sleeve mostly.They substantially can be completed the vascular puncture process and keep somewhere the indwelling of soft tube pin in vein blood vessel; Through clinical a large amount of practical proof, the venous detaining needle that uses now has following many defectives and deficiency:
Without the measure or the device that prevent blood back flow (backflow), after puncture needle was pulled out, blood can reflux due to indwelling needle, and possible contaminated environment and medical personnel people form security risk; Moreover, in using remaining needle repetition infusion process, infusion connector after each infusion-completed is pulled out action, must make the remaining needle inner chamber form certain negative pressure, can cause blood backflow to enter and keep somewhere in needle tubing, blood coagulation occurs, form embolus, when reusing, because the remaining needle passage stops up, need puncture again, can affect treatment and increase medical personnel's work; If moreover the embolus intravasation, enter the different tissue of human body or organ with blood flow, cause the thromboembolism of this tissue or organ blood vessel, the serious ischemia that causes this organ, necrosis, consequence is very serious and dangerous.
After the generation bolt is stifled, need puncture again, increase and work, operate loaded down with trivial detailsly, can increase patient's misery and burden, for this reason, the remaining needle of present clinical use, its protection rules are after pulling out joint, must use helmet, with the sealing of remaining needle interface, for anti-Hemostatic Oral Liquid solidifies, must use anticoagulant (heparin sodium) again within keeping somewhere needle tubing, be injected into and keep somewhere in needle tubing, be specifically designed to remaining needle is carried out the anticoagulant tube sealing, every 8 hours once, strict implement.Both increased medical personnel's operation sequence, and also increased patient's financial burden, some blood clotting patient with functional deformity exists haemolysis or bleeding risk can not use anticoagulant, and application is restricted; In addition, be to adopt the entry needle operation when carrying out the anticoagulant tube sealing, also increase medical personnel by the danger of pricking wound.
Chinese patent: CN200410041490.6 discloses a kind of lamellar valve that is provided with a pair of wedge shape in sleeve pipe, can prevent the venous detaining needle of blood back flow.Chinese patent: CN200620080001.2 discloses the another kind of method that prevents that automatically blood backflow is excessive, that tail intracavity at indwelling needle is provided with sealing-plug and conducting support, rubber seal plug seal fluid runner, borrow conducting support (sleeve pipe) under external force (transfusion device or syringe or conduit socket) effect, it to be run through sealing-plug, conducting again, but after not being set forth in the sockets such as transfusion device and pulling out, how the conducting support breaks away from from sealing-plug, the structure that again seals, so, this scheme can only satisfy the once use of remaining needle and fluid pipeline interface.But be only also to have prevented after puncture, the adverse current of anti-Hemostatic Oral Liquid or liquid when pulling out puncture needle is avoided contaminated environment and operation medical personnel; The 3rd (side) end at indwelling needle directly connects the needleless joint with positive-pressure closing valve in addition, but in practical operation, still need the nurse to use syringe with in the normal saline fill nipple, the retaining needle flexible tube inner chamber is rinsed, know blood residual in official jargon.The effect of the anti-bolt anticoagulant of guarantee so, compares with common venous detaining needle, and nurse's amount of labour does not reduce, and is only not re-used heparin sodium, and indication is expanded, but patient's medical expense is because using the Needleless barotropic joint to increase a lot.
Chinese patent CN200620076287.7 and CN200720018504.0 disclose two kinds of remaining needles with positive-pressure closing valve, are also the blood reflux phenomenons that has solved when puncture needle is pulled out, but can not solve the problem of keeping somewhere the anti-bolt anticoagulant of needle tubing.
Above disclosed technical scheme does not all solve the root problem of present remaining needle, perhaps exists common deficiency to be in the clinical manipulation process:
1, can not guarantee certain execution that needleless connects; As Y type remaining needle one side joint, calparine cap is arranged, also have simultaneously the infusion connector of 6% tapering, so that the nurse infuses with the needleless connected mode; But due to the end plug on infusion connector, be difficult to be saved after screwing off, if transfusion device is connected transfusion with the interface needleless after, end plug just can not reuse (be not to be dropped can not find, contaminated exactly and can not reuse); So the nurse is forced to infuse with the pin connection that has of intravenous needle puncture calparine cap mode, exists by the risk of needle stick injury.
2, positive pressure needle-free joint style, although can be in the malleation mode, the backflow of anti-Hemostatic Oral Liquid, but need nurse's Reusability normal saline flushing venous indwelling needle cannula repeatedly, could thoroughly rinse well keeping somewhere the flexible pipe inner blood, and effectively prevent blood backflow, this has increased nurse's operation, also need to consume in addition syringe, also increase patient's expense;
At present, domestic and international also not seeing with reliable technical scheme practical, simple and direct, that can solve the venous detaining needle of above-mentioned deficiency fully is disclosed.
The venous detaining needle of band saccule valve of the present invention is on the technical foundation of common y type venous detaining needle, increase the saccule valve structure, make scheme simple and easy, use simple and direct, reduce production costs greatly, reduce medical personnel's amount of labour, reduce the patient medical expense, be beneficial to universal.
(3) summary of the invention
The present invention is a kind of venous detaining needle with saccule valve that can solve above-mentioned deficiency.Technical scheme provided by the invention is such: with the venous detaining needle of saccule valve, jointly be comprised of puncture needle assembly, indwelling needle assembly, saccule valve; It is characterized in that: sacculus and two thin film slit valve consist of saccule valve jointly; Retaining needle flexible tube, puncture needle guiding tube, indwelling needle, sealing-plug consist of the venous indwelling needle assembly jointly; Puncture needle, needle stand consist of the puncture needle assembly jointly; Infusion tube inserts indwelling needle assembly, saccule valve and infusion connector serial connection, puncture needle assembly in indwelling needle, consists of the basic structure with the venous detaining needle of saccule valve.
Sacculus is the spherical cavity of being made by elastomeric material, and two less tubular port are arranged, and two ends connect respectively infusion tube; Said thin film slit valve is to be made tubulose or the taper blind pipe of thin film by flexible material, and in-line or cross narrow and small crack are arranged in the end of blind pipe, makes blind pipe end formation valve, can be towards the unidirectional exploitation in cecum crack under hydraulic pressure or air pressure; The volume of sacculus is much larger than the volume summation of venous indwelling flexible pipe inner chamber and infusion tube inner chamber; Sacculus is extruded rear deformable, volume dwindles, after removing pressure, and the quick recoverable original state.
Saccule valve is installed, and to open direction be the popular direction of liquid towards remaining needle, and be serially connected in the middle part of infusion tube, namely the outflow end of saccule valve, be that thin film slit valve (F2) end flexible pipe connects venous detaining needle; The liquid of saccule valve flows into end, is that thin film slit valve (F1) end flexible pipe connects infusion connector.
Puncture needle cements in the needle stand endoporus, and the fin of abduction is arranged in a side of Paracentesis needle holder, consists of puncture and controls the hands handle; It is sleeved on the puncture needle sheath puncture needle pin appearance and makes needle point not by trauma; Said end plug is Rule conehead with spiral, can be with the infusion connector shutoff; The reducing of indwelling needle epimere, built-in tubaeform puncture needle guiding tube, this guiding tube hypomere slim pipe diameter and indwelling casing tube are connected and fixed; Postmedian inner chamber at indwelling needle has sealing-plug, and its inside can allow puncture needle to pass through; After puncture needle was pulled out, himself elasticity can will be punctured the hole shutoff; The outer, lower end of said indwelling needle is shaped with a small gap, to locate inserting with the puncture handle set, the remaining needle sleeve pipe is made by the no-toxicity medical macromolecular material, transparent, front end is the reducing chamfering, tube cavity has several inside ridges, with the anti-flat performance of the resistance to compression that increases sleeve pipe, also observes the use of puncture effect along metal puncture pin outer wall and internal surface of sleeve pipe gap backflow for blood.Indwelling needle is y-type structure, and its rear end perforate is the female Luer that 6% tapering is arranged.
After normal infusion, finger extruding sacculus for several times, sacculus internal check valve valve can rinse the rapid direction retaining needle flexible tube of liquid to it repeatedly, and due to the effect of one-way valve valve, make the interior liquid of indwelling flexible pipe can not backflow, blood can not enter the indwelling flexible pipe.Then pull out infusion device plug, then (open fractional pack) the transfusion end plug of cleaning is screwed in infusion connector it is sealed; In flexible pipe, liquid can instead not flow owing to keeping somewhere, and blood can not enter the indwelling flexible pipe, so can reach the effect of anti-bolt anticoagulant; Thereby no longer need the tube sealing of heparin sodium or section need to use Needleless barotropic joint and use syringe to keeping somewhere the flushing of flexible pipe.
The present invention has following technological progress:
Because the present invention has adopted the saccule valve structure, make the present invention in application, only need when transfusion finishes with the sacculus extruding several times, get express developed keeping somewhere flexible pipe, then pull out infusion plug, then with end plug screw in infusion connector to shutoff; Can prevent plasma protein adhering in indwelling casing tube in Hemostatic Oral Liquid, avoid forming the blood bolt stifled, thereby not need the anticoagulant tube sealing, also no longer need to use syringe and normal saline only to need tube sealing, can alleviate nurse's work, decrease medical expense.
Be used for this aspect and adopted venous detaining needle with the sacculus valve arrangement, make structure more succinct, it is more convenient operate, and flushing line does not re-use syringe, have with low cost, easy to manufacture, easy to use, reduction expense, the characteristics of easily popularizing.
(4) description of drawings
Fig. 1 is the overall appearance schematic diagram of the venous detaining needle of band saccule valve of the present invention;
Fig. 2 is the transfusion end plug structural representation of the venous detaining needle of band saccule valve of the present invention;
Fig. 3 is the containing needle structure schematic diagram of the venous detaining needle of band saccule valve of the present invention;
Fig. 4 is the puncture needle structure schematic diagram of the venous detaining needle of band saccule valve of the present invention;
Fig. 5 is the structural representation of saccule valve of the venous detaining needle of band saccule valve of the present invention;
Fig. 6 is that the venous detaining needle of band saccule valve of the present invention is at clinical vein piercing process schematic diagram;
Fig. 7 is the structural representation of venous detaining needle in the normal infusion therapeutic process of band saccule valve of the present invention;
Fig. 8 is that the venous detaining needle of band saccule valve of the present invention is kept somewhere the structural representation of process in human vas.
(5) specific embodiment
Referring to accompanying drawing 1, the venous detaining needle of band saccule valve of the present invention is comprised of puncture needle assembly C, saccule valve assembly F and indwelling needle assembly L, also has fluid infusion port D at the far-end of indwelling needle assembly L.Connected by flexible pipe 12 between indwelling needle assembly L, saccule valve F, fluid infusion port D, the three is connected, consist of the basic structure of venous detaining needle.
Fig. 2 is the structural representation of fluid infusion port of the venous detaining needle of band saccule valve of the present invention; It is made of jointly the transfusion end plug D2 of the infusion connector D1 of 6% taper hole and one 6% transfusion conehead, is 6% conehead D21 at the front end of transfusion end plug D2, can closely cooperate with 6% infusion connector D1, forms shutoff.
As shown in Figure 3, indwelling needle assembly L of the present invention is made of jointly remaining needle sleeve pipe 2, puncture needle guiding tube 3, indwelling needle 4, sealing-plug 5, wherein remaining needle sleeve pipe 2 is made by the no-toxicity medical macromolecular material, transparent, front end is reducing chamfering 2a, tube cavity has several inside ridge 2b, with the anti-flat performance of the resistance to compression that increases sleeve pipe, also observes the use of puncture effect along metal puncture pin outer wall and internal surface of sleeve pipe gap backflow for blood.As seen from the figure, remaining needle sleeve pipe 2 and the hypomere slim pipe diameter 3a suit of puncture needle guiding tube 3 and bonding firm in the upper end hole 4a of indwelling needle 4; Sealing-plug 5 is arranged in the hypomere endoporus in indwelling needle 4, and it can coordinate with Paracentesis needle holder or end plug needle stand 4 endoporus sealings; In addition, at the sidewall of Y type indwelling needle 4, a liquid efferent tract 4b is arranged, with transfusion sleeve pipe 12 bondings; Indwelling needle 4 belows are equipped with the soft stator 4f of double-vane, on the stage casing endoporus ancient piece of jade, round, flat and with a hole in its centre of indwelling needle 4, an annular projection 4e are arranged, and are used for fixing seal plug 5; One annular groove 4c is arranged on the epimere inner hole wall of indwelling needle 4, and there is a breach 4d at the horizontal center line edge that the lower end of indwelling needle 4 is relative with needle stand side liquid outlet.The lower end perforate of needle stand 4 is 6% female Luer of a standard.
As shown in Figure 4, puncture needle assembly C of the present invention is made of jointly puncture needle 1, Paracentesis needle holder 6 and sheath A; Puncture needle 1 in a tubular form, its front end is sharp most advanced and sophisticated 1a, 5-10mm place, most advanced and sophisticated below needle tubing sidewall has a side opening 1b, the rear end of puncture needle 1 pipe and needle stand centre bore 6c are adhesively fixed, a side at Paracentesis needle holder 6 has external expansion to become operating grip seat 6a, needle stand 6 the center circular hole is arranged, outer rim has annular projection 6b in the upper end of Paracentesis needle holder 6, the maximum gauge of upper end outer rim projection 6b equals the diameter of indwelling needle 4 upper end endoporus; Substrate root at the handle sheet has a projection 6c.Puncture needle 1 cements in the complete puncture needle assembly C of composition in needle stand 6 endoporus; Sheath A is sleeved on the indwelling needle of puncture needle appearance, the protection needle tip.
Fig. 5 is saccule valve assembly F of the present invention, jointly is comprised of sacculus Q, thin film slit valve F1 and F2; Said sacculus Q is made the Sacculus of hollow structure by elastomeric material, it has two mouths of pipe, said thin film slit valve F1 and F2 are made tubulose or the vertebra shape blind pipe of thin film by flexible material, there are a word or cross crack F3 in section at its cecum, is formed in the valve valve of unidirectional unlatching under liquid or gas pressure; They are arranged in the two-port of sacculus Q according to liquid flow direction; Then be connected to form the one-way flow pipeline of liquid with infusion tube 12.When said sacculus Q was extruded, cyst wall sank, and volume dwindles, and liquid flows rapidly to the cecum fissure direction of slit valve.Unclamp sacculus Q, the elastic recovery of sacculus due to the effect of thin film slit valve, only attracts the liquid of flexible pipe far-end to replenish rapidly in sacculus, and can not and backflow liquid suction in retaining needle flexible tube.
Fig. 6 is that the venous detaining needle of band saccule valve of the present invention is at the structural representation of clinical vein piercing process; From above-mentioned accompanying drawing narration as can be known: after Fig. 2, Fig. 3, Fig. 4, venous indwelling needle assembly L, puncture needle assembly C, saccule valve F, fluid infusion port D shown in Figure 5 are assembled, consist of the venous detaining needle with saccule valve of the present invention (seeing Fig. 1); (end plug D2 can be an independent packaging).When clinical use, take off the sheath A of remaining needle front end, after partly sterilised, conventional by puncture, the right hand is held puncture needle handle assembly C, aims at vein blood vessel and implements puncture, after success, can see blood backflow at transparent remaining needle sleeve pipe and joint sleeve outer wall.
Fig. 7 is the structural representation of venous detaining needle in the normal infusion process of band saccule valve of the present invention; As seen from the figure, pull out puncture needle after the venipuncture success, the end plug D2 at the infusion connector D place of remaining needle far-end is screwed off, it is screwed in the hole of indwelling needle 4 lower ends, the infusion connector D1 of infusion apparatus joint and remaining needle far-end being pegged graft screws again, regulating transfusion speed, medicinal liquid by the transfusion device pipeline through infusion connector D1, saccule valve F, flexible pipe 12, indwelling needle, remaining needle sleeve pipe 2 enters human vein, enters normal infusion treatment.
Fig. 8 be the venous detaining needle of band saccule valve of the present invention after normal infusion treatment, be retained in the structural representation in the human vein blood vessel; As seen from the figure, after completing the normal infusion treatment, first push sacculus F for several times, can aspirate the liquid in the transfusion device pipeline, the retaining needle flexible tube inner chamber is got express developed, then unclamp sacculus F, revolve except infusion apparatus joint, the end plug D2 that will infuse is screwed off by indwelling needle 4 lower ends, and screws in infusion connector D1, carries out shutoff.Due to the unidirectional choked flow effect of thin film slit valve F1 and F2 in sacculus, make the liquid in retaining needle flexible tube not reflux, blood can not backflow yet and enter the indwelling flexible pipe, avoids the formation of blood coagulation and thrombosis with this; Simultaneously, make and no longer need closing clip in containing needle structure and reduce costs and reduce operation link.
When using for the second time, first end plug D2 is screwed off and abandons and do not re-use, then infusion apparatus joint and good infusion connector D1 are spun, governing speed is carried out normal infusion treatment.After completing infusion treatment, repeat the above-mentioned action of Fig. 8, open a new end plug D2 fractional pack, infusion connector D1 is carried out new shutoff.
Because the present invention repeatedly rinses and shutoff the Injector Bushing pipe port with the extruding saccule valve, prevent that venous blood from entering in sleeve pipe, avoids the generation of blood clotting.And can avoid using calparine cap or Needleless barotropic infusion connector; No longer need closing clip owing to being with unidirectional thin film slit valve in sacculus, making, these structures have all greatly lowered production cost, guarantee the quality of venous detaining needle infusion treatment, have innovated the new method of remaining needle shutoff.Make it have characteristics simple for structure, easy to use, with low cost, safe and reliable, that lighten one's labor, raise the efficiency, be easy to popularize, can be the new technique of present vein detaining needle for fluids infusion treatment, also meet medical apparatus and instruments towards trend development more safe and reliable, effective practicality.
Claims (3)
1. with the venous detaining needle of saccule valve, jointly formed by puncture needle assembly (C), indwelling needle assembly (L), saccule valve (F); It is characterized in that: sacculus (Q), thin film slit valve (F1) and (F2) jointly consist of saccule valve (F); Retaining needle flexible tube (2), puncture needle guiding tube (3), indwelling needle (4), sealing-plug (5) consist of venous indwelling needle assembly (L) jointly; Puncture needle (1), needle stand (6) consist of puncture needle assembly (C) jointly, infusion tube (12) inserts indwelling needle assembly (L), saccule valve (F) and infusion connector (D) serial connection, puncture needle assembly (C) in indwelling needle, consists of the basic structure of the venous detaining needle of band saccule valve of the present invention.
2. the saccule valve (F) of said venous detaining needle with saccule valve according to claim 1, it is characterized in that: sacculus (Q) is the spherical cavity of being made by elastomeric material, two less tubular port are arranged, and two ends connect respectively infusion tube (12); Said thin film slit valve (F1) and (F2) be to be made tubulose or the taper blind pipe of thin film by flexible material, in-line or cross narrow and small crack (F3) are arranged in the end of blind pipe, make blind pipe end formation valve, can be towards the unidirectional exploitation in cecum crack (F3) under hydraulic pressure or air pressure; The volume of sacculus (Q) is much larger than the volume summation of venous indwelling flexible pipe inner chamber and infusion tube inner chamber; Sacculus (Q) is extruded rear deformable, volume dwindles, after removing pressure, and the quick recoverable original state.
3. said venous detaining needle with saccule valve according to claim 1, it is characterized in that: saccule valve (F) is installed, and to open direction be the popular direction of liquid towards remaining needle, and be serially connected in the middle part of infusion tube (12), that is, the outflow end of saccule valve, thin film slit valve (F2) end flexible pipe connect venous detaining needle; The flexible pipe that the liquid of saccule valve flows into end, thin film slit valve (F1) end connects infusion connector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310068003 CN103170036A (en) | 2013-03-01 | 2013-03-01 | Venous indwelling needle with sacculus valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310068003 CN103170036A (en) | 2013-03-01 | 2013-03-01 | Venous indwelling needle with sacculus valve |
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| CN103170036A true CN103170036A (en) | 2013-06-26 |
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| CN 201310068003 Pending CN103170036A (en) | 2013-03-01 | 2013-03-01 | Venous indwelling needle with sacculus valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104721913A (en) * | 2015-04-10 | 2015-06-24 | 邓杜娟 | Self-sealing type venous indwelling needle and production method thereof |
| CN104905965A (en) * | 2015-06-29 | 2015-09-16 | 北京大学深圳医院 | Sealed doser |
| CN107890595A (en) * | 2017-12-15 | 2018-04-10 | 西藏多欣医疗器械制造有限公司 | A kind of intravascular remaining needle of malleation liquid capsule self-sealing |
| CN108578825A (en) * | 2018-05-17 | 2018-09-28 | 北京仰生恒泰科技有限责任公司 | A kind of closure type intravenous infusion line device |
| CN109011005A (en) * | 2018-08-06 | 2018-12-18 | 江苏省人民医院（南京医科大学第附属医院） | Easy-to-puncture sterile anti-backflow remaining needle |
| CN113995486A (en) * | 2021-12-20 | 2022-02-01 | 张洪阳 | Arteriovenous puncture sensitivity-improving balloon indwelling needle |
-
2013
- 2013-03-01 CN CN 201310068003 patent/CN103170036A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104721913A (en) * | 2015-04-10 | 2015-06-24 | 邓杜娟 | Self-sealing type venous indwelling needle and production method thereof |
| CN104905965A (en) * | 2015-06-29 | 2015-09-16 | 北京大学深圳医院 | Sealed doser |
| CN107890595A (en) * | 2017-12-15 | 2018-04-10 | 西藏多欣医疗器械制造有限公司 | A kind of intravascular remaining needle of malleation liquid capsule self-sealing |
| CN108578825A (en) * | 2018-05-17 | 2018-09-28 | 北京仰生恒泰科技有限责任公司 | A kind of closure type intravenous infusion line device |
| CN108578825B (en) * | 2018-05-17 | 2023-11-24 | 浙江百获健康科技有限公司 | Plugging type intravenous infusion catheter device |
| CN109011005A (en) * | 2018-08-06 | 2018-12-18 | 江苏省人民医院（南京医科大学第附属医院） | Easy-to-puncture sterile anti-backflow remaining needle |
| CN113995486A (en) * | 2021-12-20 | 2022-02-01 | 张洪阳 | Arteriovenous puncture sensitivity-improving balloon indwelling needle |
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Application publication date: 20130626 |