CN202751639U - Positive-pressure and pin-free connection piece - Google Patents
Positive-pressure and pin-free connection piece Download PDFInfo
- Publication number
- CN202751639U CN202751639U CN 201220270229 CN201220270229U CN202751639U CN 202751639 U CN202751639 U CN 202751639U CN 201220270229 CN201220270229 CN 201220270229 CN 201220270229 U CN201220270229 U CN 201220270229U CN 202751639 U CN202751639 U CN 202751639U
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- valve
- endoporus
- valve casing
- valve rod
- liquid
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Abstract
The utility model discloses a positive-pressure and pin-free connection piece. The connection piece comprises a valve casing, a valve seat and a valve column, wherein the valve seat is in sealing connection to the bottom of the valve casing, and the valve column is arranged in a valve casing main passage. An upper end opening of the valve casing main passage is a liquid inlet, and the lower end of the valve seat is provided with a liquid outlet. A plurality of axial guide grooves are arranged in the inner wall on the middle lower portion of the valve casing main passage. The upper portion of the valve column is provided with an elastic column, and the lower portion is provided with an elastic sleeve. The upper end of the valve column is in interference fit with the inner wall of the liquid inlet, and the lower end of the valve column is in sealing connection with the valve seat. A plurality of vent holes communicated with the inner cavity of the valve column are arranged on the valve seat. A liquid passing hole communicated with the guide grooves and the liquid outlet is arranged in the valve seat, and one side of the elastic column is provided with a cambered opening. When the valve column is sprung back, the volume of the valve column inner cavity is increased, and the volume of a guide passage between the valve column and the valve casing is decreased, hence, positive pressure propelled to the liquid outlet is produced by liquids in a valve, the liquid medicine backflow and the blood return are stopped, and the occurrence rate of phlebitis is reduced.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of cooperate that transfusion device and syringe use can prevent liquid return and blood backflow and can carry simultaneously the positive pressure needle-free connector of plurality of liquid.
Background technology
When existing remaining needle or inlying catheter use, adopt connecting tee or calparine cap, need repeated multiple times washing pipe, tube sealing, not only increased nursing work load, also increased operational risk when using transfusion needle to puncture.Simultaneously also can increase phlebitic incidence rate.In practical operation, no matter be transfusion device or syringe, when withdrawing from from remaining needle or inlying catheter, the capital produces negative pressure and blood back, and forms thrombosis, prevent the generation of return blood, just must be when the withdraw of the needle while moving back feed liquor, require the nurse to have than more rich operating experience, otherwise, be difficult to obtain satisfied effect.
In order to address the above problem, those skilled in the art have designed multiple remaining needle with positive-pressure function, these positive pressure remaining needles generally all connect in long duct seat place and establish a positive pressure devices, so that when transfusion device or syringe are extracted, not only do not have blood reflux to flow in the remaining needle, can be pushed forward into medicinal liquid on the contrary, so just avoided blood backflow to form thrombosis, reduce the plugging rate, and do not needed to use again anticoagulant.But, more or less all there is defective in present positive pressure devices, joint ejects easily when using non-screw syringe or transfusion device, cause the transfusion stop fluid loss, damage to sufferer, and the air in the infusion process between plunger and the valve seat cavity is compressed, so that plunger bears larger power, the probability of infusing failed increases.Positive pressure devices inside exerts an influence to nuclear magnetic resonance, NMR to a certain extent if any metal spring.
Summary of the invention
This utility model purpose is: a kind of positive pressure needle-free connector is provided, when being connected use with remaining needle or inlying catheter, can reduce the program of repeated multiple times tube sealing, washing pipe, alleviate nursing work load, increase work efficiency, also reduce phlebitic incidence rate simultaneously, and when transfusion device or syringe are extracted, can be pushed forward into medicinal liquid, avoid blood backflow to form thrombosis, reduce the plugging rate.
The technical solution of the utility model is: a kind of positive pressure needle-free connector, comprise the valve casing that has at least a main channel, be sealedly attached to the valve seat of valve casing bottom, and be arranged on valve rod in the valve casing main channel, the upper port of described valve casing main channel is the liquid inlet, the lower end of valve seat is provided with liquid outlet, have some axial diversion grooves on the inwall of middle and lower part, described valve casing main channel, described valve rod top is solid post, the bottom is the resilient sleeve with inner chamber and lower ending opening, the inwall interference fit of the upper end of described valve rod and liquid inlet, the lower end of valve rod is connected with valve base sealing, described valve seat is provided with a plurality of steam vents that are communicated with the inner chamber of valve rod, described valve seat is provided with liquid-through hole, described liquid-through hole is arranged between guiding gutter and the liquid outlet and with guiding gutter and liquid outlet and is connected, one side of described valve rod post is provided with arc opening, when the positive pressure needle-free connector is in open mode, valve rod is pushed downwards by external connector, arc opening compression, the valve rod upper surface is tilted form flow-guiding channel with the valve casing inwall, medicinal liquid is inputted from the liquid inlet, the flow-guiding channel of flowing through, guiding gutter, behind the liquid-through hole in liquid outlet flows into the valve seat bottom links to each other remaining needle or inlying catheter, and then realization infusion process.
Valve casing described in this utility model can also can be three-way valve for two-port valve (only having a main channel), and the outside, liquid inlet of described valve casing is provided with male connection, so that valve casing is connected with external connector.When described valve casing is three-way valve, valve casing one side has the arm that is communicated with the main channel, described arm upper end is provided with 6:100 female Luer or the needleless joint of standard, is connected with external connector for the ease of arm 15, and the mouth of pipe outer wall of described arm 15 also is provided with nipple 14.
The concrete structure of the main channel of valve casing described in this utility model and be with the valve rod matching relationship: have in the main channel of described valve casing and top bar and get out of a predicament or an embarrassing situation, it is the first endoporus that valve casing is positioned at the above bore portion of topping bar, the interior bore portion of valve casing between topping bar and getting out of a predicament or an embarrassing situation is the second endoporus, it is the 3rd endoporus that valve casing is positioned at the following bore portion of getting out of a predicament or an embarrassing situation, the diameter of above-mentioned the second endoporus is greater than the diameter of the first endoporus and less than the diameter of the 3rd endoporus, described liquid inlet is positioned at the first endoporus upper end, described guiding gutter is distributed on the inwall of the 3rd endoporus, when this positive pressure needle-free connector is in closed condition, the post of described valve rod is positioned at the first endoporus and the second endoporus, the resilient sleeve of valve rod is positioned at the 3rd endoporus, when described valve rod is subjected to external connector pushing and after the compression, its upper end moves down into described the second endoporus place, to guarantee that the valve rod upper surface tilts rear and the valve casing inwall forms flow-guiding channel.
The upper end of the post of described valve rod has an acclivitous sealing strip of circle and the downward-sloping sealing strip of a circle at least, and valve rod cooperates by the two-way inner wall sealing with the first endoporus of these two or more sealing strips.
The utility model has the advantages that:
1. when this utility model is used for injector to inject or transfusion device transfusion, external connector inserts the liquid inlet of valve casing, valve rod is oppressed, arc opening compression, the valve rod upper surface is tilted form flow-guiding channel with the valve casing inwall, valve rod moves down, the cavity volume of valve rod diminishes, the Partial shrinkage air is discharged minimizing pressure from the steam vent of valve seat and is easy to compression, pressure reduces when the valve rod resilience, guarantee that external connector can not be ejected from valve casing, thereby it is painful to have alleviated sufferer, has reduced medical-risk.
. valve rod is compressed in this utility model, and the cavity volume of valve rod diminishes, and it is large that the volume of the flow-guiding channel between valve rod and the valve casing becomes; During the valve rod resilience, it is large that the cavity volume of valve rod becomes, and the volume of the flow-guiding channel between valve rod and the valve casing diminishes, thereby produce the normal pressure that liquid in the valve is advanced to liquid outlet, and medicinal liquid refluxes and blood back is prevented from, and has reduced phlebitic incidence rate.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further described:
Fig. 1 is the sketch map of this utility model the first embodiment when being in closed condition; (valve casing is that three-way valve and arm connect female Luer)
Fig. 2 is the sketch map of this utility model the first embodiment when being in open mode; (valve casing is that three-way valve and arm connect female Luer)
Fig. 3 is the sketch map of this utility model the second embodiment when being in closed condition; (valve casing is that three-way valve and arm connect needleless joint)
Fig. 4 is the sketch map of the third embodiment of this utility model when being in closed condition; (valve casing is that the resilient sleeve of two-port valve, valve rod is the Ω type)
Fig. 5 is the sketch map of the third embodiment of this utility model when being in open mode; (valve casing is that the resilient sleeve of two-port valve, valve rod is the Ω type)
Fig. 6 is the sketch map of the 4th kind of embodiment of this utility model when being in closed condition; (valve casing is that the resilient sleeve of two-port valve, valve rod is corrugated tube shape)
Fig. 7 is the sketch map of the 4th kind of embodiment of this utility model when being in open mode; (valve casing is that the resilient sleeve of two-port valve, valve rod is corrugated tube shape)
Fig. 8 is one of sketch map of valve rod in this utility model; (resilient sleeve of valve rod is the Ω type)
Fig. 9 be valve rod in this utility model sketch map two; (resilient sleeve of valve rod is corrugated tube shape)
Figure 10 be valve rod in this utility model sketch map three; (resilient sleeve of valve rod is coniform)
Wherein: 1 valve casing; 11 main channels; 111 top bar; 112 get out of a predicament or an embarrassing situation; 113 first endoporus; 114 second endoporus; 115 the 3rd endoporus; 12 liquid inlets; 13 guiding gutters; 14 male connections; 15 arms; 16 female Luer; 17 needleless joints;
2 valve seats; 21 liquid outlets; 22 steam vents; 23 liquid-through holes; 24 inserting grooves; 25 Plug Divisions;
3 valve rods; 31 post; 311 sealing strips; 32 resilient sleeve; 33 inner chambers; 34 arc openings;
4 flow-guiding channels;
5 sealing rings.
The specific embodiment
Embodiment: extremely shown in Figure 7 such as Fig. 1, a kind of positive pressure needle-free connector, comprise the valve casing 1 that has at least a main channel 11, be sealedly attached to the valve seat 2 of valve casing 1 bottom, and be arranged on valve rod 3 in valve casing 1 main channel 11, the upper port of described valve casing 1 main channel 11 is liquid inlet 12, the lower end of valve seat 2 is provided with liquid outlet 21, have some axial diversion grooves 13 on the inwall of 11 middle and lower parts, described valve casing 1 main channel, described valve rod 3 tops are solid post 31, the bottom is the resilient sleeve 32 with inner chamber 33 and lower ending opening, the inwall interference fit of the upper end of described valve rod 3 and liquid inlet 12, the lower end of valve rod 3 and valve seat 2 are tightly connected, described valve seat 2 is provided with a plurality of steam vents 22 that are communicated with the inner chamber 33 of valve rod 3, described valve seat 2 is provided with liquid-through hole 23, described liquid-through hole 23 is arranged between guiding gutter 13 and the liquid outlet 21 and with guiding gutter 13 and liquid outlet 21 and is connected, and a side of described valve rod 3 post 31 is provided with arc opening 34.
Above-mentioned valve casing 1 can be two-port valve (only having a main channel), to shown in Figure 7, also can be three-way valve such as Fig. 4, and as shown in Figure 1 to Figure 3,12 outsides, liquid inlet of described valve casing 1 are provided with male connection 14, so that valve casing 1 is connected with external connector.When described valve casing 1 is three-way valve, valve casing 1 one sides have the arm 15 that is communicated with main channel 11, described arm 15 upper ends are provided with 6:100 female Luer 16 or the needleless joint 17 of standard, be connected with external connector for the ease of arm 15, the mouth of pipe outer wall of described arm 15 also is provided with nipple 14.
Extremely shown in Figure 7 such as Fig. 1, the concrete structure of the main channel 11 of valve casing described in this utility model 1 and be with valve rod 3 matching relationships: have in the main channel 11 of described valve casing 1 and top bar 111 and get out of a predicament or an embarrassing situation 112, it is the first endoporus 113 that valve casing 1 is positioned at the bore portion of topping bar more than 111, valve casing 1 top bar 111 and the interior bore portion of getting out of a predicament or an embarrassing situation between 112 be the second endoporus 114, it is the 3rd endoporus 115 that valve casing 1 is positioned at the bore portion of getting out of a predicament or an embarrassing situation below 112, the diameter of above-mentioned the second endoporus 114 is greater than the diameter of the first endoporus 113 and less than the diameter of the 3rd endoporus 115, described liquid inlet 12 is positioned at the first endoporus 113 upper ends, described guiding gutter 13 is distributed on the inwall of the 3rd endoporus 115, when this positive pressure needle-free connector is in closed condition, the post 31 of described valve rod 3 is positioned at the first endoporus 113 and the second endoporus 114, the resilient sleeve 32 of valve rod 3 is positioned at the 3rd endoporus 115, when described valve rod 3 is subjected to external connector pushing and after the compression, its upper end moves down into described the second endoporus 114 places, to guarantee that valve rod 3 upper surfaces tilt rear and valve casing 1 inwall forms flow-guiding channel 4.
The upper end of the post 31 of described valve rod 3 has an acclivitous sealing strip 311 of circle and the downward-sloping sealing strip 311 of a circle at least, valve rod 3 cooperates by two or more sealing strip 311 two-way inner wall sealings with the first endoporus 113, and is extremely shown in Figure 10 such as Fig. 8.
Sealing means between described valve casing 1 and the valve seat 2 has a lot, as the sealing of heating, adhesive seal, interference sealing and 5 sealings of installation sealing ring.
The shape of above-mentioned valve rod 3 can be varied, can be Ω type, corrugated tube shape or coniform such as the resilient sleeve 32 of valve rod 3, such as Fig. 8 to shown in Figure 10.
Among the present embodiment figure, described valve seat 2 bottoms are provided with Plug Division 25, described liquid outlet 5 is arranged in this Plug Division 25, and 25 periphery is provided with a circle inserting groove 24 to described valve seat in the Plug Division, and the valve seat 2 of this kind structure is to be connected by inserting mode with remaining needle or inlying catheter.Certainly, also can hickey be set in valve seat outer ring section, so that valve seat 2 is threaded with remaining needle or inlying catheter.
Such as Fig. 1, Fig. 3, Fig. 4 and shown in Figure 6, when the positive pressure needle-free connector is in open mode, valve rod 3 is pushed downwards by external connector, arc opening 34 compressions, valve rod 3 upper surfaces are tilted, valve rod 3 moves down, compressed air in valve rod 3 lower lumen 33 is discharged from steam vent 22, so that valve rod 3 stressed reducing in the compression process, this moment, valve rod inclined plane, 3 upper end and valve casing 1 inwall formed flow-guiding channel 4, and medicinal liquid is 4 inputs from the liquid inlet, the drainage trough 14 of flowing through, enter the liquid-through hole 12 of valve seat 3, then in liquid outlet 5 flows into valve seat 3 bottoms link to each other remaining needle or inlying catheter, realize finishing of infusion process.
Such as Fig. 2, Fig. 5 and shown in Figure 7, when the positive pressure needle-free connector is in closed condition, valve rod 2 restores to the original state, under the restoring force effect of valve rod 3 inner chambers 33, move on the valve rod 3 and seal with liquid inlet 12, at this moment, it is large that the volume of the inner chamber 33 of valve rod 3 becomes, volume between valve rod 3 and the valve casing 1 diminishes, because the volume-variation of flow-guiding channel 4 produces the normal pressure that valve casing 1 interior residual liquid is promoted to liquid outlet 21, medicinal liquid continues to enter in the liquid-through hole 23 of valve seat 2 by guiding gutter 13, then flow out from liquid outlet 21, avoided like this medicinal liquid because the caused medicinal liquid of negative pressure that produces when screwing out external connector refluxes even blood backflow.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, this utility model can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within this utility model scope required for protection.
Claims (5)
1. positive pressure needle-free connector, it is characterized in that: comprise the valve casing (1) that has at least a main channel (11), be sealedly attached to the valve seat (2) of valve casing (1) bottom, and be arranged on valve rod (3) in valve casing (1) main channel (11), the upper port of described valve casing (1) main channel (11) is liquid inlet (12), the lower end of valve seat (2) is provided with liquid outlet (21), have some axial diversion grooves (13) on the inwall of middle and lower part, described valve casing (1) main channel (11), described valve rod (3) top is solid post (31), the bottom is for having the resilient sleeve (32) of inner chamber (33) and lower ending opening, the inwall interference fit of the upper end of described valve rod (3) and liquid inlet (12), the lower end of valve rod (3) and valve seat (2) are tightly connected, described valve seat (2) is provided with a plurality of steam vents (22) that are communicated with the inner chamber (33) of valve rod (3), described valve seat (2) is provided with liquid-through hole (23), described liquid-through hole (23) is arranged between guiding gutter (13) and the liquid outlet (21) and with guiding gutter (13) and liquid outlet (21) and is connected, one side of described valve rod (3) post (31) is provided with arc opening (34), when the positive pressure needle-free connector is in open mode, valve rod (3) is pushed downwards by external connector, arc opening (34) compression, valve rod (3) upper surface is tilted form flow-guiding channel (4) with valve casing (1) inwall, medicinal liquid is (12) input from the liquid inlet, the flow-guiding channel (4) of flowing through, guiding gutter (13), liquid-through hole (23) is rear in liquid outlet (21) flows into valve seat (2) bottom links to each other remaining needle or inlying catheter, and then realizes infusion process.
2. a kind of positive pressure needle-free connector according to claim 1, it is characterized in that: described valve casing (1) is two-port valve, the outside, liquid inlet (12) of described valve casing (1) is provided with male connection (14).
3. a kind of positive pressure needle-free connector according to claim 1, it is characterized in that: described valve casing (1) is three-way valve, the outside, liquid inlet (12) of valve casing (1) is provided with male connection (14), valve casing (1) one side has the arm (15) that is communicated with main channel (11), and described arm (15) upper end is provided with 6:100 female Luer (16) or the needleless joint (17) of standard.
4. according to claim 1 and 2 or 3 described a kind of positive pressure needle-free connectors, it is characterized in that: have in the main channel (11) of described valve casing (1) and top bar (111) and get out of a predicament or an embarrassing situation (112), it is the first endoporus (113) that valve casing (1) is positioned at (111) the above bore portion of topping bar, it is the second endoporus (114) that valve casing (1) is positioned at the bore portion of topping bar (111) and getting out of a predicament or an embarrassing situation between (112), it is the 3rd endoporus (115) that valve casing (1) is positioned at (112) the following bore portion of getting out of a predicament or an embarrassing situation, the diameter of above-mentioned the second endoporus (114) is greater than the diameter of the first endoporus (113) and less than the diameter of the 3rd endoporus (115), described liquid inlet (12) is positioned at the first endoporus (113) upper end, described guiding gutter (13) is distributed on the inwall of the 3rd endoporus (115), when this positive pressure needle-free connector is in closed condition, the post (31) of described valve rod (3) is positioned at the first endoporus (113) and the second endoporus (114), the resilient sleeve (32) of valve rod (3) is positioned at the 3rd endoporus (115), when described valve rod (3) is subjected to external connector pushing and after the compression, its upper end moves down into described the second endoporus (114) and locates, to guarantee that valve rod (3) upper surface tilts rear and valve casing (1) inwall forms flow-guiding channel (4).
5. a kind of positive pressure needle-free connector according to claim 4, it is characterized in that: the upper end of the post (31) of described valve rod (3) has a circle acclivitous sealing strip (311) and the downward-sloping sealing strip (311) of a circle at least, and valve rod (3) cooperates by the two-way inner wall sealing with the first endoporus (113) of these two or more sealing strips (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270229 CN202751639U (en) | 2012-06-08 | 2012-06-08 | Positive-pressure and pin-free connection piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270229 CN202751639U (en) | 2012-06-08 | 2012-06-08 | Positive-pressure and pin-free connection piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202751639U true CN202751639U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220270229 Expired - Lifetime CN202751639U (en) | 2012-06-08 | 2012-06-08 | Positive-pressure and pin-free connection piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202751639U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103751878A (en) * | 2014-01-27 | 2014-04-30 | 王亚娟 | Positive-pressure and non-needle connecting piece |
| CN104353148A (en) * | 2014-11-25 | 2015-02-18 | 上海康德莱企业发展集团医疗器械有限公司 | Positive-pressure joint for needleless medicated transfusion |
| CN105169519A (en) * | 2015-10-28 | 2015-12-23 | 苏州鱼跃医疗科技有限公司 | Positive-pressure needle-free connecting piece |
| CN105999470A (en) * | 2016-07-02 | 2016-10-12 | 河南驼人贝斯特医疗器械有限公司 | Needleless positive-pressure type indwelling needle |
| WO2017016093A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection cap |
| WO2017016095A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection t-type connector device |
| WO2017016094A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection precision infusion set upper cover device |
| CN107626037A (en) * | 2016-07-18 | 2018-01-26 | 蔡溪进 | Pressure-fired exempts from pin medical connector |
| CN107837459A (en) * | 2017-12-11 | 2018-03-27 | 江苏苏云医疗器材有限公司 | Autobarotropy formula band gas discharge connector |
| CN108295374A (en) * | 2013-03-13 | 2018-07-20 | 康尔福盛303公司 | The zero reflux main-valve door with small priming volume |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN109999264A (en) * | 2019-04-26 | 2019-07-12 | 台州安融医疗器械有限公司 | Medical unidirectional positive pressure trident |
| CN111569183A (en) * | 2020-05-14 | 2020-08-25 | 郑孝祥 | Infusion apparatus with air-flow-preventing and blood-return functions for department of pediatrics |
| US11033726B2 (en) | 2013-03-14 | 2021-06-15 | Carefusion 303, Inc. | Needleless connector with support member |
| CN113558974A (en) * | 2020-12-07 | 2021-10-29 | 刘云虎 | Positive and negative pressure non-needle glue valve joint |
| CN114082040A (en) * | 2021-10-12 | 2022-02-25 | 杭州美克恒辉实业有限公司 | Infusion needleless connector with positive pressure elastic valve |
-
2012
- 2012-06-08 CN CN 201220270229 patent/CN202751639U/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295374A (en) * | 2013-03-13 | 2018-07-20 | 康尔福盛303公司 | The zero reflux main-valve door with small priming volume |
| CN108295374B (en) * | 2013-03-13 | 2020-11-17 | 康尔福盛303公司 | Zero-return female valve with small priming volume |
| US11602626B2 (en) | 2013-03-13 | 2023-03-14 | Carefusion 303, Inc. | Needleless connector with compressible valve |
| US11730944B2 (en) | 2013-03-14 | 2023-08-22 | Carefusion 303, Inc. | Needleless connector with support member |
| US11033726B2 (en) | 2013-03-14 | 2021-06-15 | Carefusion 303, Inc. | Needleless connector with support member |
| CN103751878B (en) * | 2014-01-27 | 2016-03-16 | 王亚娟 | Positive pressure needle-free connector |
| CN103751878A (en) * | 2014-01-27 | 2014-04-30 | 王亚娟 | Positive-pressure and non-needle connecting piece |
| CN104353148B (en) * | 2014-11-25 | 2016-10-05 | 上海康德莱企业发展集团医疗器械有限公司 | A kind of Needleless dosing transfusion positive-pressure joint |
| CN104353148A (en) * | 2014-11-25 | 2015-02-18 | 上海康德莱企业发展集团医疗器械有限公司 | Positive-pressure joint for needleless medicated transfusion |
| WO2017016093A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection cap |
| WO2017016095A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection t-type connector device |
| WO2017016094A1 (en) * | 2015-07-29 | 2017-02-02 | 佳承精工股份有限公司 | Positive pressure needle-free injection precision infusion set upper cover device |
| CN105169519A (en) * | 2015-10-28 | 2015-12-23 | 苏州鱼跃医疗科技有限公司 | Positive-pressure needle-free connecting piece |
| CN105999470A (en) * | 2016-07-02 | 2016-10-12 | 河南驼人贝斯特医疗器械有限公司 | Needleless positive-pressure type indwelling needle |
| CN107626037A (en) * | 2016-07-18 | 2018-01-26 | 蔡溪进 | Pressure-fired exempts from pin medical connector |
| CN107837459A (en) * | 2017-12-11 | 2018-03-27 | 江苏苏云医疗器材有限公司 | Autobarotropy formula band gas discharge connector |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN109999264A (en) * | 2019-04-26 | 2019-07-12 | 台州安融医疗器械有限公司 | Medical unidirectional positive pressure trident |
| CN109999264B (en) * | 2019-04-26 | 2023-11-03 | 台州安融医疗器械有限公司 | Medical unidirectional positive pressure three-fork |
| CN111569183A (en) * | 2020-05-14 | 2020-08-25 | 郑孝祥 | Infusion apparatus with air-flow-preventing and blood-return functions for department of pediatrics |
| CN113558974A (en) * | 2020-12-07 | 2021-10-29 | 刘云虎 | Positive and negative pressure non-needle glue valve joint |
| CN114082040A (en) * | 2021-10-12 | 2022-02-25 | 杭州美克恒辉实业有限公司 | Infusion needleless connector with positive pressure elastic valve |
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Address after: 215122 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee after: SUZHOU LINHUA MEDICAL INSTRUMENT CO., LTD. Address before: 215122 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee before: Linhua Medical Appliances Co., Ltd., Suzhou |
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| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
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| CX01 | Expiry of patent term |