CN1879902A - Needle-free closed transfusion adaptor - Google Patents
Needle-free closed transfusion adaptor Download PDFInfo
- Publication number
- CN1879902A CN1879902A CN 200610007910 CN200610007910A CN1879902A CN 1879902 A CN1879902 A CN 1879902A CN 200610007910 CN200610007910 CN 200610007910 CN 200610007910 A CN200610007910 A CN 200610007910A CN 1879902 A CN1879902 A CN 1879902A
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- CN
- China
- Prior art keywords
- piston
- housing
- extension
- hole
- epimere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000741 silica gel Substances 0.000 claims description 16
- 229910002027 silica gel Inorganic materials 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000003475 lamination Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 35
- 239000008280 blood Substances 0.000 abstract description 11
- 210000004369 blood Anatomy 0.000 abstract description 11
- 239000003146 anticoagulant agent Substances 0.000 abstract description 7
- 229940127219 anticoagulant drug Drugs 0.000 abstract description 7
- 210000003462 vein Anatomy 0.000 abstract description 4
- 229920002379 silicone rubber Polymers 0.000 abstract 2
- 239000003814 drug Substances 0.000 abstract 1
- 238000001990 intravenous administration Methods 0.000 description 12
- 241001149930 Protura <class> Species 0.000 description 8
- 239000012530 fluid Substances 0.000 description 8
- 238000001802 infusion Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229960002897 heparin Drugs 0.000 description 4
- 229920000669 heparin Polymers 0.000 description 4
- 208000007536 Thrombosis Diseases 0.000 description 3
- 230000023555 blood coagulation Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 208000031220 Hemophilia Diseases 0.000 description 1
- 208000009292 Hemophilia A Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a non-needle sealing transfusion connector, which is formed by a frame (6), a liquid outlet tube (1), the sealing rings (4a, 4b), and a piston (3), wherein the edge of piston (3) is embedded with silicon rubber ring (4a) whose lower end is larger 1.5 times than upper end, while the lower end is hollow (3a) and the inner wall is smooth; the liquid outlet tube 91) has one extending part (1f) into the frame (6) whose edge of upper end is embedded with the silicon rubber ring (4b) and the upper end has hole (3C), to form the spring (5) space with the lower hollow end of piston (3); the bottom of hole (3C) has hole (1d) through to the side hole (1b) of liquid outlet tube (1); the inner wall at 2/3 of lower end of frame (6) has one semi-circle groove whose radius is 2mm, to form the liquid channel with the base hole (1a) of extending part (1F) and the liquid outlet tube (1); when using, the taper head of injector pushes the piston (3); the medicine liquid will flow into human body via the top incline of piston and the liquid channel; then taking out the taper head, the spring (5) will return; the gas channel will feed the passive pressure inside the piston; and the piston will generate positive pressure to inject liquid to vein to avoid solidifying blood without using anticoagulant.
Description
Technical field:
The present invention relates to a kind of liquid infusion joint, especially a kind ofly be used for the novel Needleless seal transfusion joint that medical purpose can produce the moment malleation, prevent the vein blood back.
Background technology:
At present, domestic in the venous transfusion therapeutic process, restriction because of disease situation or the condition of patient own, usually need prolonged and repeated transfusion or in the odd-numbered day, will repeatedly annotate medicinal liquid in liquid-transport pipe-line in the transfusion temporarily, in the case, usually be in the transfusion device pipeline serial connection tee T or calparine cap, the former is used in the treatment of the medicinal liquid of repeatedly annotating of odd-numbered day transfusion; The latter needing for a long time during the disease treatment then to be used for the process of (many days are continuously) infusion treatment, calparine cap and venous detaining needle is used, but the venous transfusion passage of the fixed On/Off of formation.But above-mentioned technology (apparatus) exists certain defective and deficiency: the former in use wants partly sterilised before each the use, and wants the entry needle puncture, and this has caused certain work trouble to medical personnel and has had by the risk of pricking wound; The latter is in clinical use, usually because of some disease, patient can not use anticoagulant such as heparin and with being restricted, and do not have anticoagulant such as heparin in the calparine cap, need medical personnel behind the filling medicinal liquid, the reuse syringe makes operation more loaded down with trivial details and inconvenient toward a certain amount of anticoagulant of the interior filling of medicated cap.The application of calparine cap also has the possibility that little air enters blood circulation and blood coagulation in addition, has certain risk.
The patented technology product that has American I CU medical company to produce in the recent period: " but reflex " Needleless seal transfusion joint enters the domestic market, one type CLC2000 type is arranged in its tens of kinds of products, be three end T type structures, have behind the filling medicinal liquid, when pulling out syringe or transfusion device joint, can produce the moment malleation, medicinal liquid is washed intravenous needle, preventing that blood from passing back into solidifies in the intravenous needle.But it needs three direction structures: liquid inlet, liquid outlet, exhaust end, and complex structure costs an arm and a leg, and list needs only tens of units, far can not satisfy the needs of numerous patients and clinical treatment.
In sum, the dosing assembly of disposable infusion set need improve, but the at present domestic neither one of going back can the while solution of the above problems be disclosed with the method for simple economy, practical safety.But the reflex joint of American I CU company has tens of kinds, also only has one on the CLC2000 type that is "T"-shaped three end structures to have and produces the moment malleation, prevents the function of blood back, but its complex structure costs an arm and a leg, and can not satisfy the needs of domestic clinical treatment.
Summary of the invention:
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of simple and practical, cheap, be different from foreign technology and structure, the novel Needleless seal transfusion joint of erect type both-end structure, it can effectively satisfy the needs in the above-mentioned transfusion and drug-adding process, and can produce the moment malleation, preventing that venous return from going into solidifies the formation thrombosis in the intravenous needle.
For achieving the above object, technological means of the present invention is such: Needleless seal transfusion joint,, form jointly through injection mo(u)lding by plastics with spring, silica gel sealing ring, and become complete infusion connector shell with case bonding by the liquid outlet joint of injection mo(u)lding; It is characterized in that: fluid joint lower end is the external spiral interface, the upper end extends in the housing, and extension top outer rim has annular recess, groove is embedded with silica gel sealing ring, extension upper end central authorities have round hole, bottom one side in hole has aperture and extends downward drain pipe middle part and be communicated with the formation gas passage with the side perforate; In housing epimere outer rim helical structure is arranged, so that spin with syringe spiral conehead or transfusion device screwed union; About 1.5 times than the epimere internal diameter of housing hypomere internal diameters vertically have the semi-circular grooves that radius is 2.0mm along inwall at housing hypomere 2/3 place, form fluid passage; The side opening of extension basilar part with go out that liquid interface is communicated with and communicate with fluid passage; Have an external diameter and housing internal diameter to adapt but the piston that can slide up and down in housing, the front end end face of piston is the inclined-plane that the is not less than 30 ° plane of groove (or have), and the effusive gap of liquid is arranged when being convenient to contact with the syringe conehead; Outer rim also has an annular recess in the upper end of piston, and groove is embedded with silica gel sealing ring, with housing epimere internal diameter fitted seal and slidably; The hypomere central authorities of piston are hollow, and perisporium is smooth, can be inserted in fluid joint extension, and with the silica gel circle fitted seal of extension epimere outer rim, but slidably; In the space that forms with piston middle part circular hole in extension central authorities circle hole, a spring is arranged, be compressed when annotating, when the holder of syringe conehead was opened after dosing, its resilience that piston can be made progress resetted it.During use, spin with syringe or transfusion device joint and apparatus of the present invention Needleless seal transfusion joint, piston can be pressed downward in the joint, spring also is compressed simultaneously, in the residing space of spring air from gas passage row to the external world; Medicinal liquid enters along slit, piston tip inclined-plane (or planar trenches) then that housing, the gap (fluid passage) between piston and housing hypomere enter the side opening that is positioned at the extension basilar part, enter drain pipe, intravenous needle and be infused into human body; , syringe or transfusion device are unpluged with joint of the present invention after medicinal liquid finishes in filling, because the spring force effect resets the piston resilience, air can replenish the negative pressure space of spring expansion formation through gas passage rapidly; But the silica gel circle closed joint of piston nose is not outwards revealed liquid; Simultaneously because piston hypomere diameter is bigger, the liquid that holds moves the formed spatial joint clearance of up-down structure more than piston, excess liquid is under the effect of recoil of spring pressure, can discharge rapidly to the intravenous needle direction along fluid passage downwards, form malleation, to the flushing of vein needle tubing, can prevent effectively that blood from refluxing, avoid taking place blood coagulation and stop up the intravenous needle passage.
Because apparatus of the present invention have adopted the upright tubular type structure that can produce the moment malleation, the present invention is had not to be needed with anticoagulant such as heparin, and wide accommodation prevents that effectively the blood backflow from entering intravenous needle and solidifying the formation thrombosis, and can prevent that medical personnel are by pricking wound; Can increase work efficiency simultaneously, alleviate patient's misery, make infusion treatment safe and reliable;
Description of drawings:
Structural representation when Fig. 1 is the unused state of the novel Needleless seal transfusion joint of the present invention;
Structural representation when Fig. 2 is the user mode of the novel Needleless seal transfusion joint of the present invention;
Specific embodiment:
As shown in Figure 1, constitute Needleless seal transfusion joint of the present invention mainly by forming with the lower part: drain pipe (1) screwed union and housing (6) constitute the complete shell of Needleless seal transfusion joint of the present invention, inner hypomere 2/3 sidewall of housing (6) has the semi-circular grooves (6a) of a radius 2.0mm, housing (6) front end lateral surface is stricture of vagina structure (2) in the shape of a spiral, can spin with syringe screwed union or helmet, about 1.5 times of housing (6) hypomere internal diameters than the epimere internal diameter, housing (6) the inner chamber piston (3) that can slide up and down, piston (3) top is 30 ° the inclined-plane plane of groove (or have), the epimere outer rim of piston (3) has annular recess, groove is embedded with silica gel sealing ring (4a), about 1.5 times of piston (3) hypomere external diameters than the epimere external diameter, its inner end is hollow circular hole (3a) structure, inner wall smooth can slide mutually with the interior part of housing (6) (1f) that extends to of liquid outlet joint (1); Outer rim also has groove on liquid outlet joint extension (1f) top, and groove is embedded with silica gel sealing ring (4b), and extension (1f) central authorities have round hole (1c), and the space content that itself and piston (3) inner chamber form is received spring (5); Having aperture (1d) extension downwards in bottom, circle hole (1c) one side is communicated with STH (1b) outside drain pipe (1) joint; Have a circular hole (1a) that a diameter is not less than 2.0mm in that the basilar part of liquid outlet joint extension (1f) is perpendicular to axial direction, communicate with drain pipe (1) endoporus.
As shown in Figure 2, novel Needleless seal transfusion joint of the present invention is in clinical use, structure is following change: extract (or using transfusion device) behind the medicinal liquid with syringe during use, be not with entry needle (can stop this link medical personnel like this) by pricking wound, only on the spiral interface (2) with syringe conehead (7) or the directly tight insertion of transfusion device joint (7) Needleless seal transfusion joint of the present invention, simultaneously, under external force, overcome spring (5) power (compression spring), piston (3) top is compressed in the housing (6) by syringe or transfusion device conehead, and gas is compressed by small side hole (1d) perforate (1b) on drain pipe (1) sidewall of extension (1f) center bottom and discharges in the residing space of spring (5); The slow injector push-rod/or open the transfusion device actuator of pushing away, make medicinal liquid from the syringe conehead in gap, the inclined-plane, top of piston (3) (or planar trenches) flows into housing (6), the medicinal liquid semi-circular grooves (6a) of the diameter 2mm at the gap between housing (6) and piston (3) and housing hypomere 2/3 place again enters the STH (1a) that is positioned at extension (1f) bases with the fluid passage that piston (3) periphery constitutes, flow into drain pipe (1) interface, after intravenous needle enters human body.Dosing finishes, can pull out syringe conehead (7)/or being connected of transfusion device joint (7) and the novel Needleless seal transfusion joint of the present invention, along with pressure discharges, piston (3) is understood the rapid resilience that make progress and is restored under the effect of spring (5), the top of piston (3) enters housing (6) upper end, because of being airtight with housing (6) front end, silica gel sealing ring (4a) cooperates, the joint front end is closed, liquid that can not overflows from the joint front end, simultaneously, the front end of extension (1f) also has silica gel sealing ring (4b), it and piston (3) hypomere inwall close fit, to guarantee that liquid does not enter the space at spring place, simultaneously, outside air by drain pipe (1) interface outside aperture (1b) in hole (1d) enters the space that extension (1f) epimere circle hole (1c) and piston (3) constitute, to alleviate negative pressure in this space, can accelerate the reset speed of piston (3), guarantee that device is safe and reliable;
Because of slit between piston (3) epimere and the housing (6) very little, formed volume (appellation V
1) minimum; And 1.5 times of the diameter epimere diameter of piston hypomere but (the housing internal diameter is corresponding to be changed), when piston moves down, by piston (3) epimere and housing (6) spatial volume (V that hypomere produced
2) bigger, the liquid that holds is also more, when the piston resilience is restored, by the piston hypomere move up and housing hypomere and extension between the spatial volume (V that forms
3) also less, because of the diameter of extension 1f diameter much larger than piston 3 epimeres, so, in manufacturing and designing process, as long as satisfy the following formula requirement:
V
2＞(V
1+V
3)
Just can realize: when pulling out the syringe conehead, under the effect of apparatus of the present invention inner spring resilient pressure, can make piston (3) rapidly upwards resilience restore and make V
2Liquid in the volume is filled rapidly and is moved the V of generation by piston
1And V
3Spatial volume, unnecessary partially liq just must be by fluid passage, discharge in human vein through venoclysis needle, reaches flushing intravenous needle front end blood, prevents that blood from refluxing, and avoids blood to solidify the formation thrombosis in intravenous needle.
Be the upright shape of pipe because apparatus of the present invention have adopted that housing (6) inner carrier (3) moves up and down, it is simple in structure, and is easy to manufacture, easy to use, is beneficial to clinical use with fixing;
Move up and down the structure of the gas pressure of generation because apparatus of the present invention have adopted to extend into enclosure interior and have side opening in the drain pipe side at drain pipe (1) joint with release plunger (3), make apparatus of the present invention flexibility and reliability more in use.
Because piston (3) outer rim setting-in silica gel sealing ring (4a, the 4b) structure of apparatus of the present invention uniqueness makes and operates without entry needle in venous transfusion dosing process, has avoided the generation of pricking wound, can make operation safe reliable,
Because apparatus of the present invention can be after feeding operations, produce the moment malleation, making liquid press to intravenous needle rapidly washes the pin inner blood, can effectively avoid blood in intravenous needle, to solidify, avoid using anticoagulant such as heparin, improved the subject range (some hemophilia people, the patient of disturbances of blood coagulation is not suitable for using anticoagulant) of infusion treatment.
Claims (4)
1. Needleless seal transfusion joint, by housing (6), drain pipe (1), piston (3) and spring (5), silica gel sealing ring (4a, 4b) the common composition, it is characterized in that: drain pipe (1) middle part is bonding with housing (6), extension (1f) is formed in housing (6) at top, its top outer rim is embedded with silica gel sealing ring (4a), extension (1f) upper end has round hole (1c), bottom one side in hole (1c) has aperture (1d) to extend downward drain pipe (1) middle part to be communicated with side opening (1b), in housing (6) epimere outer rim spiral lamination (2) is arranged, housing (6) hypomere internal diameter than epimere internal diameter about (1.5) doubly, the semi-circular grooves (6a) that a radius 2.0mm is vertically arranged along inwall at housing (6) hypomere 2/3 place, extension (1f) bases have side opening (1a) to communicate with the connection of drain pipe (1) endoporus; Again,
In housing (6), there are an external diameter and housing internal diameter to differ 0.8mm, the piston that can slide mutually (3), the epimere end face of piston (3) is 30 ° of inclined-planes or is shaped on the plane of groove, be embedded with silica gel sealing ring (4a) in piston (3) epimere outer rim, piston (3) hypomere hollow, inner wall smooth is inserted in extension (1f), (4b) slides airtight the cooperation with the silica gel circle, in the space that circle hole (1c) and piston (3) middle part circular hole (3a) form a spring (5) arranged.
2. by the described novel Needleless seal transfusion joint of claim 1, it is characterized in that: the upper end outer rim of piston (3) is embedded with silica gel sealing ring (4a), the upper end end face of piston (3) can be 30 ° or the plane of many grooves is arranged, the hypomere of piston (3) is hollow round hole (3a), about 1.5 times than the epimere diameter of piston (3) hypomere diameters.
3. by the described novel Needleless seal transfusion joint of claim 1, it is characterized in that: the epimere outer rim of housing (6) has spiral lamination (2), about 1.5 times than the epimere internal diameter of its hypomere internal diameters, housing hypomere 2/3 place's inwall has the semi-circular grooves (6a) of a radius 2mm.
4. by the described novel Needleless seal transfusion joint of claim 1, it is characterized in that: the shell of drain pipe (1) and bonding this joint of formation of housing (6), drain pipe (1) extends formation extension (1f) in housing (6), upper end outer rim at extension (1f) is embedded with silica gel sealing ring (4b), extension (1f) epimere has vertical round hole (1c), the bottom of (1c) has aperture (1d) to communicate with drain pipe (1) areole (1b) in the hole, and the side opening (1a) that has a diameter to be not less than 2mm in the bases of extension (1f) communicates with drain pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100079108A CN100479873C (en) | 2006-02-22 | 2006-02-22 | Needle-free closed transfusion adaptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100079108A CN100479873C (en) | 2006-02-22 | 2006-02-22 | Needle-free closed transfusion adaptor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1879902A true CN1879902A (en) | 2006-12-20 |
| CN100479873C CN100479873C (en) | 2009-04-22 |
Family
ID=37518400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100079108A Expired - Fee Related CN100479873C (en) | 2006-02-22 | 2006-02-22 | Needle-free closed transfusion adaptor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100479873C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879339A (en) * | 2010-07-12 | 2010-11-10 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| CN101337105B (en) * | 2008-08-11 | 2012-11-21 | 张亚根 | I-form arteriovenous indwelling needle with positive pressure function |
| CN101897998B (en) * | 2009-05-31 | 2013-04-17 | 广东龙心医疗器械有限公司 | Needleless barotropic medicine-adding infusion connector |
| CN104127934A (en) * | 2014-07-22 | 2014-11-05 | 李宜 | Infusion apparatus special for indwelling catheter |
| WO2014183272A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector connected to extracorporal indwelling catheter and having stop valve |
| CN104758997A (en) * | 2015-04-17 | 2015-07-08 | 南通恒泰医疗器材有限公司 | Integrated micro-resistance needle-free anti-counterflow infusion positive pressure connector |
| CN105963824A (en) * | 2016-06-28 | 2016-09-28 | 李卫林 | Rotary type needle-free connector keeping positive pressure constantly |
| CN106730119A (en) * | 2017-02-17 | 2017-05-31 | 河南曙光汇知康生物科技股份有限公司 | A kind of transfusion needleless joint |
| CN108815627A (en) * | 2018-08-10 | 2018-11-16 | 杭州光启医疗科技发展有限公司 | The infusion apparatus of anti-return blood |
| CN109436423A (en) * | 2018-12-20 | 2019-03-08 | 普叶顿（上海）自动化科技有限公司 | It is a kind of to vacuumize filling apparatus and its method for medical instrument |
-
2006
- 2006-02-22 CN CNB2006100079108A patent/CN100479873C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337105B (en) * | 2008-08-11 | 2012-11-21 | 张亚根 | I-form arteriovenous indwelling needle with positive pressure function |
| CN101897998B (en) * | 2009-05-31 | 2013-04-17 | 广东龙心医疗器械有限公司 | Needleless barotropic medicine-adding infusion connector |
| CN101879339A (en) * | 2010-07-12 | 2010-11-10 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| CN101879339B (en) * | 2010-07-12 | 2011-10-12 | 上海康德莱企业发展集团医疗器械有限公司 | Needleless dosing positive pressure connector |
| WO2014183272A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector connected to extracorporal indwelling catheter and having stop valve |
| CN104127934A (en) * | 2014-07-22 | 2014-11-05 | 李宜 | Infusion apparatus special for indwelling catheter |
| CN104758997A (en) * | 2015-04-17 | 2015-07-08 | 南通恒泰医疗器材有限公司 | Integrated micro-resistance needle-free anti-counterflow infusion positive pressure connector |
| CN105963824A (en) * | 2016-06-28 | 2016-09-28 | 李卫林 | Rotary type needle-free connector keeping positive pressure constantly |
| CN106730119A (en) * | 2017-02-17 | 2017-05-31 | 河南曙光汇知康生物科技股份有限公司 | A kind of transfusion needleless joint |
| CN108815627A (en) * | 2018-08-10 | 2018-11-16 | 杭州光启医疗科技发展有限公司 | The infusion apparatus of anti-return blood |
| CN109436423A (en) * | 2018-12-20 | 2019-03-08 | 普叶顿（上海）自动化科技有限公司 | It is a kind of to vacuumize filling apparatus and its method for medical instrument |
| CN109436423B (en) * | 2018-12-20 | 2024-01-23 | 普叶顿（上海）自动化科技有限公司 | Vacuumizing and filling device and method for medical instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100479873C (en) | 2009-04-22 |
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