CN201791158U - Positive pressure needle-less connecting piece - Google Patents
Positive pressure needle-less connecting piece Download PDFInfo
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- CN201791158U CN201791158U CN2010205306256U CN201020530625U CN201791158U CN 201791158 U CN201791158 U CN 201791158U CN 2010205306256 U CN2010205306256 U CN 2010205306256U CN 201020530625 U CN201020530625 U CN 201020530625U CN 201791158 U CN201791158 U CN 201791158U
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- valve seat
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- liquid inlet
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- 239000007788 liquid Substances 0.000 claims abstract description 155
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000005538 encapsulation Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000008280 blood Substances 0.000 abstract description 12
- 210000004369 blood Anatomy 0.000 abstract description 12
- 230000000474 nursing effect Effects 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract 2
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 208000001297 phlebitis Diseases 0.000 abstract 1
- 238000010992 reflux Methods 0.000 description 10
- 208000007536 Thrombosis Diseases 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001467 acupuncture Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 230000001141 propulsive effect Effects 0.000 description 2
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a positive pressure needle-less connecting piece which comprises a spring, a valve seat, a hollow valve shell and a valve column; the valve shell is sleeved on the outer side of the valve seat and is connected with the valve seat in a sealing way; the upper end of the valve shell is provided with a liquid inlet, the lower end of the valve seat is provided with a liquid outlet, a liquid flowing channel is arranged between the liquid inlet and the liquid outlet, and a vent hole is arranged at the bottom of the valve seat; the lower end of the valve column extends into the cavity of the valve seat, and the spring is arranged between the valve column and the bottom surface of the cavity of the valve seat; and the upper end and the lower end of the valve column are provided with an upper seal ring and a lower seal ring, and the lower seal ring separates the cavity of the valve seat into an inner cavity which is sealed to the liquid inlet and an outer cavity which is open to the liquid inlet. The positive pressure needle-less connecting piece compresses air to go out from the vent hole during injection, the pressure is reduced when the spring drives the valve column to rebound, a Luer joint is not popped up, so that the pain of a patient and the medical risk are reduced; and the connecting piece reduces a plurality of times of pipe sealing and flushing, reduces the nursing workload, improves the working efficiency, pushes the liquid medicine forwards when the joint is pulled out, prevents the liquid medicine from flowing back and returning blood, and reduces the pipe blockage rate and the phlebitis incidence rate.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of can prevent liquid return and blood that cooperates that transfusion device and syringe use and refluxes and can carry the malleation needleless connector of multiple liquid simultaneously.
Background technology
When existing remaining needle or inlying catheter use, adopt to connect threeway or calparine cap, need repeated multiple times washing pipe, tube sealing, not only increased nursing work load, also increased operational risk when using entry needle to puncture.Simultaneously also can increase phlebitic incidence rate.In practical operation, no matter be transfusion device or syringe, when remaining needle or inlying catheter withdraw from, the capital produces negative pressure and blood back, and forms thrombosis, prevent the generation of blood back, just must be when the withdraw of the needle while moving back feed liquor, require the nurse to have relatively abundanter 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 malleation 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 to reflux and formed thrombosis, reduce the plugging rate, and do not needed the reuse anticoagulant.But, more or less all there is defective in present positive pressure devices, as the unidirectional positive valve of disclosed positive-pressure type coupling assembling of Chinese patent literature CN201008703Y and CN201179271Y announcement, in actual use, the former spring is difficult to fixing and spring compression travel weak point, and the malleation amount is little; And the latter's spring one end also can occur the off normal phenomenon fixedly the time and causes spring and interior wall friction that resilience force is increased, and joint ejects easily when using non-screw socket syringe or transfusion device, cause transfusion to stop fluid loss, damage to sufferer, and the air in the infusion process between plunger and the valve seat cavity is compressed, make plunger bear bigger power, the probability of transfusion failure increases.
Summary of the invention
This utility model purpose is: a kind of malleation needleless 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 to reflux and formed thrombosis, reduce the plugging rate.
The technical solution of the utility model is: a kind of malleation needleless connector comprises valve casing, valve rod, spring, valve seat; Described valve casing, valve rod and valve seat are hollow structure, valve casing is set in the outside of valve seat, and be connected with valve base sealing, the upper end of described valve casing is provided with the liquid inlet, the lower end of valve seat is provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, described valve seat is provided with fixed leg, and the bottom of valve seat is provided with steam vent; Be provided with fixed leg in the described valve rod, the lower end of valve rod is stretched in the cavity of valve seat, and described spring is arranged between valve rod and the valve seat cavity floor, and its upper end is set on the last fixed leg of valve rod, and the lower end is set on the following fixed leg of valve seat; The top and bottom of described valve rod are respectively equipped with groove, and sealing ring and lower seal are housed respectively in the groove, and described lower seal is divided into the cavity of valve seat to the inner chamber of liquid inlet sealing and the exocoel of opening to the liquid inlet.
The further technical scheme of this utility model is: a kind of malleation needleless connector comprises valve casing, valve rod, spring, valve seat; Described valve casing, valve rod and valve seat are hollow structure, valve casing is set in the outside of valve seat, and be connected with valve base sealing, the upper end of described valve casing is provided with the liquid inlet, the lower end of valve seat is provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, described valve seat is provided with fixed leg, and the bottom of valve seat is provided with steam vent; Be provided with fixed leg in the described valve rod, the lower end of valve rod is stretched in the cavity of valve seat, and described spring is arranged between valve rod and the valve seat cavity floor, and its upper end is set on the last fixed leg of valve rod, and the lower end is set on the following fixed leg of valve seat; The top and bottom of described valve rod are respectively equipped with groove, and sealing ring and lower seal are housed respectively in the groove, and described lower seal is divided into the cavity of valve seat to the inner chamber of liquid inlet sealing and the exocoel of opening to the liquid inlet; Be provided with a cavity that is opened on its bottom surface in the described valve rod, the described fixed leg of going up is located on the cavity floor; Described valve seat bottom is provided with several voltage supply steam vent that air discharges that contracts, described valve seat bottom is provided with liquid-through hole, described liquid-through hole is arranged between liquid flow path and the described liquid outlet and with liquid flow path and liquid outlet and is connected, from the effusive liquid of liquid flow path by the outlet of liquid-through hole influent; The cavity floor of described valve seat is provided with fixed leg; The last sealing ring of described valve rod and the inwall of described liquid inlet are interference fit, are interference fit between the inwall of the cavity of lower seal and valve seat.
One of more detailed technical scheme of this utility model is: a kind of malleation needleless connector comprises valve casing, valve rod, spring, valve seat; Described valve casing, valve rod and valve seat are hollow structure, valve casing is set in the outside of valve seat, and be connected with valve base sealing, the upper end of described valve casing is provided with the liquid inlet, the lower end of valve seat is provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, described valve seat is provided with fixed leg, and the bottom of valve seat is provided with steam vent; Be provided with fixed leg in the described valve rod, the lower end of valve rod is stretched in the cavity of valve seat, and described spring is arranged between valve rod and the valve seat cavity floor, and its upper end is set on the last fixed leg of valve rod, and the lower end is set on the following fixed leg of valve seat; The top and bottom of described valve rod are respectively equipped with groove, and sealing ring and lower seal are housed respectively in the groove, and described lower seal is divided into the cavity of valve seat to the inner chamber of liquid inlet sealing and the exocoel of opening to the liquid inlet; Described valve casing is a two-port valve, and the outside, liquid inlet of described two-port valve is provided with male connection; Be provided with a cavity that is opened on its bottom surface in the described valve rod, the described fixed leg of going up is located on the cavity floor; Described valve seat bottom is provided with several voltage supply steam vent that air discharges that contracts, described valve seat bottom is provided with liquid-through hole, described liquid-through hole is arranged between liquid flow path and the described liquid outlet and with liquid flow path and liquid outlet and is connected, from the effusive liquid of liquid flow path by the outlet of liquid-through hole influent; The cavity floor of described valve seat is provided with fixed leg; The last sealing ring of described valve rod and the inwall of described liquid inlet are interference fit, are interference fit between the inwall of the cavity of lower seal and valve seat; The end face of described valve rod is an inclined-plane, and perhaps end face is provided with and is three salient points that equilateral triangle distributes; Between described valve casing and the valve seat sealing ring is housed, by heat seal or the supersonic thermal setting encapsulation of heating.
Two of the more detailed technical scheme of this utility model is: a kind of malleation needleless connector comprises valve casing, valve rod, spring, valve seat; Described valve casing, valve rod and valve seat are hollow structure, valve casing is set in the outside of valve seat, and be connected with valve base sealing, the upper end of described valve casing is provided with the liquid inlet, the lower end of valve seat is provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, described valve seat is provided with fixed leg, and the bottom of valve seat is provided with steam vent; Be provided with fixed leg in the described valve rod, the lower end of valve rod is stretched in the cavity of valve seat, and described spring is arranged between valve rod and the valve seat cavity floor, and its upper end is set on the last fixed leg of valve rod, and the lower end is set on the following fixed leg of valve seat; The top and bottom of described valve rod are respectively equipped with groove, and sealing ring and lower seal are housed respectively in the groove, and described lower seal is divided into the cavity of valve seat to the inner chamber of liquid inlet sealing and the exocoel of opening to the liquid inlet; Described valve casing is a three-way valve, the outside, liquid inlet of three-way valve is provided with male connection, the arm of three-way valve is connected with liquid flow path, and described arm upper end is provided with the 6:100 female Luer or the non-6:100 interface of standard, and described female Luer is equipped with the sealing end cap; Be provided with a cavity that is opened on its bottom surface in the described valve rod, the described fixed leg of going up is located on the cavity floor; Described valve seat bottom is provided with several voltage supply steam vent that air discharges that contracts, described valve seat bottom is provided with liquid-through hole, described liquid-through hole is arranged between liquid flow path and the described liquid outlet and with liquid flow path and liquid outlet and is connected, from the effusive liquid of liquid flow path by the outlet of liquid-through hole influent; The cavity floor of described valve seat is provided with fixed leg; The last sealing ring of described valve rod and the inwall of described liquid inlet are interference fit, are interference fit between the inwall of the cavity of lower seal and valve seat; The end face of described valve rod is an inclined-plane, and perhaps end face is provided with and is three salient points that equilateral triangle distributes; Between described valve casing and the valve seat sealing ring is housed, by heat seal or the supersonic thermal setting encapsulation of heating.
The utility model has the advantages that:
1. when this utility model was used for injector to inject or transfusion device transfusion, the 6:100 joint inserted in the valve casing, and valve rod is oppressed, spring is compressed simultaneously, valve rod moves forward, and cavity volume diminishes, and the part compressed air is discharged minimizing pressure from the steam vent of valve seat bottom and is easy to compression; Pressure reduces when spring drives the valve rod resilience, guarantee that the 6:100 joint can not ejected from valve casing, thereby alleviated the sufferer misery, reduced medical-risk, and fixed leg is spacing up and down for the both ends of the spring quilt, has avoided the spring off normal to cause spring and interior wall friction that resilience force is increased;
2. this utility model medi-spring is compressed by valve rod, and cavity volume diminishes, and it is big that the volume of the liquid flow path outside the inner chamber becomes; Spring drives the valve rod resilience, and it is big that cavity volume becomes, and the volume of the liquid flow path outside the inner chamber diminishes, thereby produces liquid in the valve to the propulsive normal pressure of liquid outlet, and medicinal liquid refluxes and blood back is prevented from;
3. this utility model has reduced repeated multiple times tube sealing, washing pipe program, alleviated nursing work load, improved work efficiency, and when transfusion device or syringe are extracted, can be pushed forward into medicinal liquid, avoid blood to reflux and formed thrombosis, reduced the plugging rate, also reduce phlebitic incidence rate, adopted the needleless operation simultaneously, reduced medical personnel's acupuncture risk.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further described:
Structural representation when Fig. 1 is in closed condition for embodiment one;
Structural representation when Fig. 2 is in open mode for embodiment one;
Structural representation when Fig. 3 is in closed condition for embodiment two;
Structural representation when Fig. 4 is in open mode for embodiment two;
Fig. 5 is the structural representation of valve rod in this utility model;
Fig. 6 is the structural representation of valve seat in this utility model.
Wherein: 1 is valve casing; 2 is valve rod; 3 is spring; 4 is valve seat; 5 is the liquid inlet; 6 is liquid outlet; 7 is liquid flow path; 8 is steam vent; 9 is sealing ring; 10 is last sealing ring; 11 is lower seal; 12 is inner chamber; 13 is exocoel; 14 is arm; 15 is female Luer; 16 is cavity; 17 is liquid-through hole; 18 are following fixed leg; 19 is the inclined-plane; 20 is last fixed leg.
The specific embodiment
Embodiment one: a kind of malleation needleless connector as shown in Figure 1 and Figure 2, comprises valve casing 1, valve rod 2, spring 3, valve seat 4.Described valve casing 1 is a three-way valve, and the arm 14 of described three-way valve is arranged on the side of valve casing 1, and described arm 14 upper ends are provided with the 6:100 female Luer 15 of standard, and described female Luer 15 is equipped with the sealing end cap.Only illustrate in the drawings can a plurality of arms be set according to the requirement of reality transfusion on valve casing 1 by an arm 14.Described valve casing 1 and valve seat 4 are hollow structure, and valve casing 1 is set in the outside of valve seat 4, and sealing ring 9 is housed between the two, and by heat seal or the supersonic thermal setting encapsulation of heating.The upper end of described valve casing 1 is provided with liquid inlet 5, and the upper end of liquid inlet 5 is provided with the external screw thread interface of standard.
As shown in Figure 5, the top and bottom of described valve rod 2 are respectively equipped with groove, and sealing ring 10 and lower seal 11 are housed respectively in the groove.Be provided with a cavity 16 that is opened on its bottom surface in the described valve rod 2, the bottom surface of cavity 16 is provided with fixed leg 20 on.The end face of described valve rod 2 is an inclined-plane 19, prevents to produce when malleation needleless connector is connected with external connector slippage.
As shown in Figure 6, described valve seat 4 is provided with one and is opened on its vertical cavity, and the bottom surface of described cavity is provided with fixed leg 18.The lower end of described valve rod 2 is stretched in the cavity of valve seat 4, and spring 3 is arranged between valve rod 2 and valve seat 4 cavity floor, and its upper end is set on the last fixed leg 20 of valve rod 2, and the lower end is set in down on the fixed leg 18.The bottom of valve seat 4 is provided with and makes inner chamber and extraneous two steam vents 8 that communicate, and the lower end of valve seat 4 is provided with liquid outlet 6, is provided with liquid flow path 7 between liquid inlet 5 and liquid outlet 6, and described liquid flow path 7 is connected with arm 14.Described valve seat 4 bottoms also are provided with liquid-through hole 17, described liquid-through hole 17 is arranged between liquid flow path 7 and the described liquid outlet 6 and with liquid flow path 7 and liquid outlet 6 and is connected, from the liquid inlet 5 and the liquid that flows into of arm 14 enter liquid flow path 7 backs by liquid-through hole 17 influents outlet 6, thereby can carry out the transfusion of multiple liquid simultaneously.
Embodiment two: a kind of malleation needleless connector as shown in Figure 3, Figure 4, comprises valve casing 1, valve rod 2, spring 3, valve seat 4.Described valve casing 1 is a two-port valve, and 5 outsides, liquid inlet of described two-port valve are provided with male connection.Described valve casing 1 and valve seat 4 are hollow structure, and valve casing 1 is set in the outside of valve seat 4, and sealing ring 9 is housed between the two, and by heat seal or the supersonic thermal setting encapsulation of heating.The upper end of described valve casing 1 is provided with liquid inlet 5, and the upper end of liquid inlet 5 is provided with the external screw thread interface of standard.
As shown in Figure 5, the top and bottom of described valve rod 2 are respectively equipped with groove, and sealing ring 10 and lower seal 11 are housed respectively in the groove.Be provided with a cavity 16 that is opened on its bottom surface in the described valve rod 2, the bottom surface of cavity 16 is provided with fixed leg 20 on.The end face of described valve rod 2 is an inclined-plane 19, prevents to produce when malleation needleless connector is connected with external connector slippage.
As shown in Figure 6, described valve seat 4 is provided with one and is opened on its vertical cavity, and the bottom surface of described cavity is provided with fixed leg 18.The lower end of described valve rod 2 is stretched in the cavity of valve seat 4, and spring 3 is arranged between valve rod 2 and valve seat 4 cavity floor, and its upper end is set on the last fixed leg 20 of valve rod 2, and the lower end is set in down on the fixed leg 18.The bottom of valve seat 4 is provided with and makes inner chamber and extraneous two steam vents 8 that communicate, and the lower end of valve seat 4 is provided with liquid outlet 6, is provided with liquid flow path 7 between liquid inlet 5 and liquid outlet 6, and described liquid flow path 7 is connected with arm 14.Described valve seat 4 bottoms also are provided with liquid-through hole 17, described liquid-through hole 17 is arranged between liquid flow path 7 and the described liquid outlet 6 and with liquid flow path 7 and liquid outlet 6 and is connected, from the liquid inlet 5 and the liquid that flows into of arm 14 enter liquid flow path 7 backs by liquid-through hole 17 influents outlet 6, thereby can carry out the transfusion of multiple liquid simultaneously.
In embodiment one and embodiment two, the upper surface of valve rod 2 also can be provided with equally distributed three salient points, described salient point is equilateral triangle and distributes, and sealing ring 10 and lower seal 11 are preferably the butterfly sealing ring on it, and sealing ring 9 is preferably O-ring seal; Steam vent 8 on the valve seat 4 can be provided with a plurality of according to actual needs; The interface of arm 14 upper ends also can be non-6:100 interface.
As Fig. 2, shown in Figure 4, when malleation needleless connector is in open mode, the upper end of valve rod 2 is pushed by external connector, valve rod 2 and then compression spring 3, compressed air in the inner chamber 12 of liquid inlet 5 sealings is discharged from steam vent 8, make valve rod 2 stressed reducing in the compression process, sealing ring 10 drops under the liquid inlet 5 on this moment, liquid flow path 7 in the valve is opened, medicinal liquid is 5 inputs from the liquid inlet, flow through liquid flow path 7 in the valve enters the liquid-through hole 17 of valve seat 4, then in liquid outlet 6 flows into valve seat 4 bottoms link to each other remaining needle or inlying catheter, realize finishing of infusion process, in this process, have a fraction of medicinal liquid and enter the exocoel of opening to liquid inlet 5 13.
As Fig. 1, as shown in Figure 3, when malleation needleless connector was in closed condition, spring 3 restored to the original state, and under the restoring force effect of spring 3, moved sealing liquid inlet 5 on the valve rod 2.At this moment, it is big that the volume of inner chamber 12 becomes, inner chamber 12 outer liquid flow path 7 volumes diminish, because the volume-variation of liquid flow path 7, generation promotes normal pressure from liquid residual in the valve to liquid outlet, make the medicinal liquids in the exocoel 13 continue to enter in the liquid-through hole 17 of valve seat 4, flow out from liquid outlet 6 then, avoided medicinal liquid like this because the caused medicinal liquid of negative pressure that produces when screwing out external connector refluxes even blood refluxes by liquid flow path 7.
When this utility model was used for injector to inject or transfusion device transfusion, the 6:100 female Luer was inserted in the valve casing 1, and valve rod 2 is oppressed, spring 3 is compressed simultaneously, valve rod 2 moves forward, inner chamber 12 smaller volume, and the part compressed air is discharged minimizing pressure from the steam vent 8 of valve seat 4 bottoms and is easy to compression; Pressure reduces when spring 3 drives valve rod 2 resiliences, guarantees that the 6:100 female Luer can not ejected from valve casing 1, thereby has alleviated the sufferer misery, has reduced medical-risk; This utility model medi-spring 3 is compressed by valve rod 2, inner chamber 12 smaller volume, and it is big that the volume of the liquid flow path 7 outside the inner chamber 12 becomes; Spring 3 drives valve rods 2 resiliences, and it is big that inner chamber 12 volumes become, and the volume of the liquid flow path 7 outside the inner chamber 12 diminishes, thereby produces liquid in the valve to the propulsive normal pressure of liquid outlet, and medicinal liquid refluxes and blood back is prevented from; This utility model has reduced repeated multiple times tube sealing, washing pipe program, alleviated nursing work load, improved work efficiency, and when transfusion device or syringe are extracted, can be pushed forward into medicinal liquid, avoid blood to reflux and formed thrombosis, reduced the plugging rate, also reduce phlebitic incidence rate, adopted the needleless operation simultaneously, reduced medical personnel's acupuncture risk.
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 (9)
1. a malleation needleless connector is characterized in that: comprise valve casing (1), valve rod (2), spring (3), valve seat (4); Described valve casing (1), valve rod (2) and valve seat (4) are hollow structure, valve casing (1) is set in the outside of valve seat (4), and be tightly connected with valve seat (4), the upper end of described valve casing (1) is provided with liquid inlet (5), the lower end of valve seat (4) is provided with liquid outlet (6), be provided with liquid flow path (7) between liquid inlet (5) and liquid outlet (6), described valve seat (4) is provided with fixed leg (18), and the bottom of valve seat (4) is provided with steam vent (8); Be provided with fixed leg on (20) in the described valve rod (2), the lower end of valve rod (2) is stretched in the cavity of valve seat (4), described spring (3) is arranged between valve rod (2) and valve seat (4) cavity floor, its upper end is set on the last fixed leg (20) of valve rod (2), and the lower end is set on the following fixed leg (18) of valve seat (4); The top and bottom of described valve rod (2) are respectively equipped with groove, sealing ring (10) and lower seal (11) are housed respectively in the groove, and described lower seal (11) is divided into the cavity of valve seat (4) to inner chamber (12) of liquid inlet (5) sealing and the exocoel of opening to liquid inlet (5) (13).
2. malleation needleless connector according to claim 1 is characterized in that: described valve casing (1) is a two-port valve, and the liquid inlet of described two-port valve (5) outside is provided with male connection.
3. malleation needleless connector according to claim 1, it is characterized in that: described valve casing (1) is a three-way valve, the outside, the liquid inlet of three-way valve (5) is provided with male connection, the arm of three-way valve (14) is connected with liquid flow path (7), described arm (14) upper end is provided with the 6:100 female Luer (15) or the non-6:100 interface of standard, and described female Luer (15) is equipped with the sealing end cap.
4. malleation needleless connector according to claim 1 is characterized in that: be provided with a cavity (16) that is opened on its bottom surface in the described valve rod (2), the described fixed leg (20) of going up is located on cavity (16) bottom surface.
5. malleation needleless connector according to claim 1, it is characterized in that: described valve seat (4) bottom is provided with several voltage supply steam vent (8) that air discharges that contracts, described valve seat (4) bottom is provided with liquid-through hole (17), described liquid-through hole (17) is arranged between liquid flow path (7) and the described liquid outlet (6) and with liquid flow path (7) and liquid outlet (6) and is connected, from the effusive liquid of liquid flow path (7) by liquid-through hole (17) influent outlet (6).
6. malleation needleless connector according to claim 1 is characterized in that: the cavity floor of described valve seat (4) is provided with fixed leg (18).
7. malleation needleless connector according to claim 1, it is characterized in that: the last sealing ring (10) of described valve rod (2) is an interference fit with the inwall of described liquid inlet (5), is interference fit between the inwall of the cavity of lower seal (11) and valve seat (4).
8. according to claim 1 or 4 described malleation needleless connectors, it is characterized in that: the end face of described valve rod (2) is an inclined-plane (19), and perhaps end face is provided with and is three salient points that equilateral triangle distributes.
9. malleation needleless connector according to claim 1 is characterized in that: between described valve casing (1) and the valve seat (4) sealing ring (9) is housed, by heat seal or the supersonic thermal setting encapsulation of heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205306256U CN201791158U (en) | 2010-09-16 | 2010-09-16 | Positive pressure needle-less connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205306256U CN201791158U (en) | 2010-09-16 | 2010-09-16 | Positive pressure needle-less connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201791158U true CN201791158U (en) | 2011-04-13 |
Family
ID=43846077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205306256U Expired - Lifetime CN201791158U (en) | 2010-09-16 | 2010-09-16 | Positive pressure needle-less connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201791158U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105496477A (en) * | 2016-01-16 | 2016-04-20 | 刘静 | Surgical operating instrument connecting piece |
| CN106668976A (en) * | 2016-12-28 | 2017-05-17 | 天津哈娜好医材有限公司 | Positive pressure joint for medical infusion and using method thereof |
| 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 |
| 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 |
-
2010
- 2010-09-16 CN CN2010205306256U patent/CN201791158U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105496477A (en) * | 2016-01-16 | 2016-04-20 | 刘静 | Surgical operating instrument connecting piece |
| CN106668976A (en) * | 2016-12-28 | 2017-05-17 | 天津哈娜好医材有限公司 | Positive pressure joint for medical infusion and using method thereof |
| 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 |
| 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 |
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