CN107536711B - Combined cover - Google Patents
Combined cover Download PDFInfo
- Publication number
- CN107536711B CN107536711B CN201610472180.2A CN201610472180A CN107536711B CN 107536711 B CN107536711 B CN 107536711B CN 201610472180 A CN201610472180 A CN 201610472180A CN 107536711 B CN107536711 B CN 107536711B
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- China
- Prior art keywords
- cover
- valve core
- needle
- rubber plug
- shaped head
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000003814 drug Substances 0.000 abstract description 23
- 238000001802 infusion Methods 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 229930182555 Penicillin Natural products 0.000 description 3
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229940049954 penicillin Drugs 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- -1 and meanwhile Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229940126585 therapeutic drug Drugs 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
Landscapes
- Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
The present invention provides a combination cover comprising: the needle valve core is provided with a valve core upper cover and a valve core lower cover which are vertically connected, a valve core rubber plug is arranged between the valve core upper cover and the valve core lower cover, the valve core lower cover is provided with a needle-shaped head, a liquid flow channel is arranged in the needle-shaped head, a plurality of liquid flow holes communicated with the liquid flow channel are formed in the end part of the needle-shaped head, and the valve core rubber plug is provided with a cavity which is relatively communicated with the liquid flow channel; the connecting cover is internally provided with a sealing film, the valve core lower cover is hermetically arranged in the connecting cover, and the needle-shaped head is arranged opposite to the sealing film; and the outer cover is sleeved outside the upper cover of the valve core and is hermetically arranged on the connecting cover. The combined cover can realize needleless medicine adding and/or needleless medicine delivery, and has simple structure and convenient use.
Description
Technical Field
The present invention relates to a combination cap, and more particularly, to a needleless drug delivery and/or delivery combination cap for use in the field of medical devices.
Background
In the dispensing process before daily infusion, therapeutic drugs are required to be added into infusion bottles or bags, and the traditional method is as follows: the method comprises the steps of pumping out liquid in a large infusion package by using a disposable syringe with a steel needle, injecting the liquid into a penicillin bottle filled with powder, oscillating to dissolve the powder in the penicillin bottle, pumping the dissolved liquid into the syringe by using the disposable syringe with the steel needle after the powder in the penicillin bottle is completely dissolved, and then injecting the liquid in the syringe into an infusion bag or an infusion bottle.
When in transfusion, the disposable transfusion device with the steel needle or the plastic needle is used for puncturing the rubber gasket of the cover, so that the liquid in the large transfusion package can establish a passage through the steel needle or the plastic needle, and the liquid medicine is injected into a patient.
The large infusion package combined cover used at present can only use a traditional infusion set and a syringe, and needleless connection cannot be realized. When the traditional injector with the steel needle is used for adding medicine, the steel needle is required to repeatedly pierce the rubber gasket, so that rubber scraps of the gasket can fall into the medicine liquid, and meanwhile, medicine is added for many times, the rubber gasket is repeatedly pierced, and the leakage problem of a puncture part after medicine addition is also easily caused. In addition, when a nurse performs a dosing and puncturing operation, the steel needle of the syringe is easy to stab fingers of the nurse, and the health is threatened; in the operation process, in order to improve the efficiency and reduce the puncture resistance, a steel needle with a larger diameter is generally used, so that the problems of rubber scraps of the rubber gasket falling off and leakage of the puncture part are more easily caused; when the infusion is carried out, the steel needle or the plastic needle is also used for puncturing the rubber gasket in the combined cover, so that the rubber scraps fall off, particularly the plastic needle is thicker in diameter, the resistance is larger during puncturing, the infusion is inconvenient for nurses to use, and in the infusion process, the steel needle or the plastic needle can slide out of the combined cover gasket due to the action of external force, so that the rubber scraps fall off, particularly the plastic needle is pulled out, leakage can not be generated in time after the plastic needle is sealed, and the leaked liquid medicine can influence or damage a patient.
Accordingly, there is a need to provide a new combination cover that overcomes the above-described problems.
Disclosure of Invention
The invention aims to provide a combined cover which can realize needleless medicine adding and/or needleless medicine delivery and has simple structure and convenient use.
The above object of the present invention can be achieved by the following technical solutions:
the present invention provides a combination cover comprising:
The needle valve core is provided with a valve core upper cover and a valve core lower cover which are vertically connected, a valve core rubber plug is arranged between the valve core upper cover and the valve core lower cover, the valve core lower cover is provided with a needle-shaped head, a liquid flow channel is arranged in the needle-shaped head, a plurality of liquid flow holes communicated with the liquid flow channel are formed in the end part of the needle-shaped head, and the valve core rubber plug is provided with a cavity which is relatively communicated with the liquid flow channel;
the connecting cover is internally provided with a sealing film, the valve core lower cover is hermetically arranged in the connecting cover, and the needle-shaped head is arranged opposite to the sealing film;
and the outer cover is sleeved outside the upper cover of the valve core and is hermetically arranged on the connecting cover.
In a preferred embodiment, the upper end of the valve core upper cover is sealed and sleeved at the upper end of the valve core rubber plug, a slit notch is formed at the upper end of the valve core rubber plug, and the slit notch is communicated with the cavity.
In a preferred embodiment, the valve core lower cover is provided with a groove communicated with the liquid flow channel, the lower end of the valve core rubber plug is positioned in the groove, the upper end face of the valve core lower cover is provided with a ring convex part, and the lower end of the valve core upper cover is sleeved outside the ring convex part.
In a preferred embodiment, a sealing convex ring is formed on the outer edge of the upper end of the valve core lower cover, the needle-shaped head is integrally formed at the lower end of the sealing convex ring, and the sealing convex ring is in interference fit with the connecting cover.
In a preferred embodiment, the inner wall of the connecting cover is provided with a fastening part, and the sealing convex ring is fastened to the lower end of the fastening part in a state that the needle-shaped head pierces the sealing film.
In a preferred embodiment, the fastening part is a fastening convex ring convexly arranged on the inner wall of the connecting cover; or the buckling part is a plurality of buckling convex blocks, and the plurality of buckling convex blocks are convexly arranged on the inner wall of the connecting cover at intervals along the circumferential direction.
In a preferred embodiment, the upper end of the valve core upper cover is formed with an external thread section.
In a preferred embodiment, a rubber plug is arranged in the connecting cover, and the rubber plug is arranged at the upper end of the sealing film and is positioned at the lower end of the needle-shaped head.
In a preferred embodiment, the outer cover is provided with a breaking part and a connecting part, a connecting ring is formed on the outer edge of the upper end of the connecting cover, the connecting part is connected with the connecting ring in a welding way, and a frangible part is formed between the breaking part and the connecting part.
In a preferred embodiment, the sealing collar has a diameter greater than the inner diameter of the outer cap.
In a preferred embodiment, the inner diameter of the connecting portion is smaller than the inner diameter of the connecting cap.
The combined cover has the characteristics and advantages that: the needle type valve core of the combined cover can realize needleless medicine adding and/or needleless medicine delivery, the purpose of puncturing the rubber plug and/or the sealing film is realized through the needle-shaped head of the needle type valve core, meanwhile, the valve core rubber plug of the needle type valve core is extruded, so that a gap notch on the valve core rubber plug is opened to establish a liquid passage, and after the extrusion force acted on the valve core rubber plug is removed, the gap notch of the valve core rubber plug can be closed to seal the liquid passage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a combination cover according to the present invention.
Fig. 2 is a cross-sectional view taken along A-A of fig. 1.
Fig. 3 is a B-B cross-sectional view of fig. 1.
Fig. 4 is a perspective view of the combined cap of the present invention with the broken portion of the outer cap removed.
Fig. 5 is a C-C cross-sectional view of fig. 4.
Fig. 6 is a D-D cross-sectional view of fig. 4.
Fig. 7 is a perspective view of a needle valve cartridge of the combination cap of the present invention piercing a sealing membrane and a rubber stopper.
Fig. 8 is an E-E cross-sectional view of fig. 7.
Fig. 9 is a cross-sectional view taken along the direction F-F of fig. 7.
Fig. 10 is a perspective view of another embodiment of the combination cover of the present invention.
Fig. 11 is a G-G cross-sectional view of fig. 10.
Fig. 12 is an H-H cross-sectional view of fig. 10.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, the present invention provides a combination cover including a needle valve core 1, a connection cover 2, and an outer cover 3, wherein: the needle valve core 1 is provided with a valve core upper cover 11 and a valve core lower cover 12 which are vertically connected, a valve core rubber plug 13 is arranged between the valve core upper cover 11 and the valve core lower cover 12, the valve core lower cover 12 is provided with a needle-shaped head 121, a liquid flow channel 1211 is arranged in the needle-shaped head 121, a plurality of liquid flow holes 1212 communicated with the liquid flow channel 1211 are formed in the end part of the needle-shaped head 121, the valve core rubber plug 13 is provided with a cavity 131, and the cavity 131 is relatively communicated with the liquid flow channel 1211; a sealing film 21 is arranged in the connecting cover 2, the valve core lower cover 12 is hermetically arranged in the connecting cover 2, and the needle-shaped head 121 is arranged opposite to the sealing film 21; the outer cover 3 is sleeved outside the valve core upper cover 11 and is hermetically arranged on the connecting cover 2.
Specifically, the needle valve core 1 is composed of a valve core upper cover 11, a valve core lower cover 12 and a valve core rubber plug 13, and the needle valve core 1 is a core component of the invention and is a main component for realizing needleless medicine feeding and/or medicine delivery. In this embodiment, the valve core upper cover 11 is generally in the shape of a truncated cone with a reduced upper end, and an external thread section 111 is provided on the outer side of the reduced upper end of the valve core upper cover 11, and the external thread section 111 can be connected with a luer head or a luer connector with threads, so as to facilitate the adapting connection with the existing syringe, medicine mixer or infusion apparatus with the luer head or the luer connector.
The cartridge lower cover 12 includes a needle-shaped head 121 shaped like a general medical needle, the needle-shaped head 121 having a piercing tip through which the purpose of piercing a rubber stopper or a sealing film can be achieved; meanwhile, the needle-shaped head 121 can be designed to keep the clamping of the original rubber plug to the needle head of the puncture outfit. The needle-shaped head 121 has a fluid channel 1211, and a plurality of fluid holes 1212 are provided in the piercing tip of the needle-shaped head 121, and the fluid holes 1212 are in communication with the fluid channel 1211. In the present embodiment, the upper end of the valve cartridge lower cover 12 is formed with a groove 122, and the groove 122 communicates with the flow passage 1211 of the needle 121; further, a ring protrusion 123 is formed on the upper end surface of the valve body lower cover 12, and the lower end of the valve body upper cover 11 is fitted and connected to the outer side of the ring protrusion 123.
The valve core rubber plug 13 is in a round table cylinder shape with a necking upper end, a cavity 131 is arranged in the middle of the valve core rubber plug 13, the cavity 131 is communicated to the bottom of the valve core rubber plug 13, and the lower end of the valve core rubber plug 13 is inserted into the groove 122 of the valve core lower cover 12, so that the cavity 131 of the valve core rubber plug 13 is communicated with the liquid flow channel 1211 of the valve core lower cover 12 relatively up and down; the upper end of the valve plug 13 forms a necking section 132, the necking section 132 is inserted into the upper end necking part of the valve plug upper cover 11 in a sealing way, namely, the upper end of the valve plug upper cover 11 is sleeved with the necking section 132 at the upper end of the valve plug 13, and the upper end of the valve plug 13 and the upper end of the valve plug upper cover 11 form interference fit.
In this embodiment, a slit opening 133 is formed at the upper end of the spool rubber plug 13, and the slit opening 133 communicates with the cavity 131. Specifically, the upper neck portion 132 of the valve plug 13 is a solid portion, the slit opening 133 is a slit that is formed on the solid neck portion 132 and penetrates up and down, the slit opening 133 is a long narrow slit, which is located in the middle of the neck portion 132, the length of the slit opening 133 is smaller than the diameter of the neck portion 132, and two ends of the slit opening 133 do not penetrate through the outer periphery of the neck portion 132. In a state where the valve core rubber plug 13 is not used, the slit cut 133 is in a closed state due to the elastic action of the rubber plug itself, which can prevent the cavity 131 of the valve core rubber plug 13 from forming a communication state with the outside; in a state that the valve core rubber plug 13 is used, after the syringe, the medicine mixer or the infusion apparatus is connected to the external thread section 111 of the valve core upper cover 11 by screwing or is connected to the inner diameter of the valve core upper cover 11 by plugging, the inner diameter of the valve core upper cover 11 forms interference fit with a common syringe head, and the following will be described by taking a syringe as an example: the current syringe is provided with a common infusion apparatus with a luer lock structure and a common infusion apparatus without the luer lock structure, and after the syringe with the luer lock structure is connected with the valve core upper cover 11 in a spiral screwing mode, the syringe head of the syringe is in interference fit with the inner diameter of the valve core upper cover; for a common injector head, the common injector head needs to be manually inserted into the valve core upper cover 11 to form interference fit with the inner diameter of the valve core upper cover 11. At this time, the common injector head will squeeze the neck portion 132 of the valve plug 13, so that the slit cut 133 of the neck portion 132 opens to form a channel communicating with the cavity 131 for injection or infusion, and after the injector head is separated from the neck portion 132, the slit cut 133 of the neck portion 132 will be reclosed to form a sealing state due to the resilience of the valve plug 13 itself, so as to ensure that the liquid medicine does not leak and the cleanliness of the interior of the combined cover is ensured.
The connecting cover 2 is in a cylindrical shape, and is provided with a sealing film 21 therein, and when the lower end of the connecting cover 2 is welded with the joint 4 of the existing medical infusion bag or infusion bottle, the sealing film 21 can isolate the liquid medicine from the external air, thereby preventing the liquid medicine from being polluted. Further, a coupling ring 24 is formed at the upper outer edge of the coupling cap 2, and the coupling ring 24 is used to couple with the outer cap 3.
The outer cap 3 has a breaking portion 31 and a connecting portion 32, and a frangible portion 33 is formed between the breaking portion 31 and the connecting portion 32, wherein the frangible portion 33 may be an annular groove or a discontinuous groove disposed between the breaking portion 31 and the connecting portion 32, and the frangible portion 33 may facilitate breaking and separating the breaking portion 31 from the connecting portion 32. The outer cover 3 is sleeved on the outer side of the valve core upper cover 11 of the needle valve core 1 and is connected to the upper end of the connecting cover 2 in a sealing manner, and the inner diameter of the outer cover 3 is slightly larger than the outer diameter of the valve core upper cover 11 so that the outer cover and the valve core upper cover are matched. In the present embodiment, the connection portion 32 of the outer cap 3 is hermetically connected to the connection ring 24 of the connection cap 2 by welding, so that contamination of the inside of the combination cap can be prevented.
Before the combined cover is used, the outer cover 3 can play a role in sealing the needle valve core 1, so that the inside of a product is clean and sterile. In use, as shown in fig. 4 to 6, the broken portion 31 of the outer cap 3 needs to be twisted off from the connection portion 32 to expose the upper valve core cap 11 and the valve core rubber stopper 13 of the needle valve core 1 for connection with a syringe or the like, and when the broken portion 31 of the outer cap 3 is twisted off, the connection portion 32 of the outer cap 3 remains on the connection ring 24 of the connection cap 2.
The opening method of the outer cap 3 of the present invention is not limited to the twisting and breaking type, and the breaking portion 31 may be, for example, a pull ring type, a side pull ring type, or a pull folding type, etc., so long as it can be separated from the connecting portion 32, and various opening methods are possible, as long as it can seal the needle valve core 1 before use, is easy to open when in use, and retains the connecting portion 32 on the connecting cap 2 after opening, and plays a role of fixing.
The needle type valve core of the combined cover can realize needleless medicine feeding and/or needleless medicine delivery, the needle-shaped head 121 of the needle type valve core 1 can realize the purpose of puncturing a rubber plug and/or a sealing film, meanwhile, the valve core rubber plug 13 of the needle type valve core 1 is extruded to open a slit notch 133 on the valve core rubber plug 13 to establish a liquid passage, and after the extrusion force on the valve core rubber plug 13 is removed, the slit notch 133 of the valve core rubber plug 13 can be closed to seal the liquid passage.
In one embodiment of the present invention, the upper end outer edge of the lower valve core cover 12 is formed with a sealing convex ring 124, the needle-shaped head 121 is integrally formed at the lower end of the sealing convex ring 124, and the sealing convex ring 124 is in interference fit with the connecting cover 2.
Specifically, the needle valve core 1 is clamped on the inner peripheral wall of the connecting cover 2 by the sealing convex ring 124 during assembly, that is, the diameter of the sealing convex ring 124 is required to be larger than the inner diameter of the connecting cover 2, so that the valve core lower cover 12 of the needle valve core 1 can be stably arranged in the connecting cover 2.
In addition, the diameter of the sealing convex ring 124 is larger than the inner diameter of the outer cap 3, that is, the inner diameter of the outer cap 3 is smaller than the inner diameter of the connecting cap 2, so that the connecting portion 32 remained on the connecting ring 24 of the connecting cap 2 can play a role in fixing the needle valve core 1 after the broken portion 31 of the outer cap 3 is separated from the connecting portion 32, and the connecting portion 32 can abut against the sealing convex ring 124 to prevent the sealing convex ring 124 from falling out of the connecting cap 2.
Further, in the present invention, as shown in fig. 7 to 9, the inner wall of the connection cap 2 is provided with a locking portion 22, the lower cap 12 of the needle valve 1 is sealingly connected to the upper portion of the connection cap 2, the needle-shaped head 121 is located above the sealing film 21, and the sealing collar 124 is locked to the lower end of the locking portion 22 after the needle-shaped head 121 pierces the sealing film 21 of the connection cap 2.
Specifically, in an embodiment of the present invention, the fastening portion 22 may be a fastening convex ring protruding on the inner wall of the connection cover 2; or in another embodiment, the fastening portion 22 is a plurality of fastening protrusions, and the fastening protrusions are protruded on the inner wall of the connection cover 2 at intervals along the circumferential direction.
When the needle valve core 1 is pushed into the connecting cover 2 under the action of external force, the needle-shaped head 121 of the valve core lower cover 12 of the needle valve core 1 pierces the sealing film 21 in the connecting cover 2 to establish a liquid passage, at this time, when the sealing convex ring 124 of the valve core lower cover 12 falls to the lower end of the buckling part 22 along with the falling of the needle valve core 1, the buckling part 22 can prop against the sealing convex ring 124 to ensure that the needle valve core 1 compresses the sealing film 21, preventing the sealing convex ring 124 from channeling upwards, so as to fix the position of the needle valve core 1 in the piercing state, thus avoiding the leakage caused by the movement of the needle valve core 1.
In an embodiment of the present invention, a rubber plug 23 may be further disposed in the connection cover 2, and the rubber plug 23 is disposed at the upper end of the sealing film 21 and at the lower end of the needle-shaped head 121. When the needle valve core 1 is used, the rubber plug 23 is pierced firstly under the action of external force, and then the sealing film 21 of the connecting cover 2 is pierced, and the rubber plug 23 has the significance that the needle valve core 1 can be tightly combined with the needle valve core 1 to form a seal for liquid in the container, so that the liquid can not leak.
According to an embodiment of the present invention, as shown in fig. 10 to 12, in another example of the combination cap of the present invention, in this example, the connection cap 2 of the combination cap may be replaced by a connector 4 in the prior art, the lower valve cap 12 of the needle valve 1 is sealed and inserted into the connector 4, the connection portion 32 of the outer cap 3 is welded and connected to the connection ring 43 at the outer edge of the upper end of the connector 4, and a sealing film 41 and/or a rubber plug 42 are required to be disposed in the connector 4, so as to separate the liquid medicine from the needle valve 1, thereby preventing the occurrence of pollution to the liquid medicine. In addition, a fastening portion 44 may be disposed on the inner wall of the connector 4, and the structure of the fastening portion 44 is the same as the structure, the working principle and the effect of the fastening portion 22 of the connection cover 2, which are not described herein.
The foregoing is merely a few embodiments of the present invention and those skilled in the art may make various modifications or alterations to the embodiments of the present invention in light of the disclosure herein without departing from the spirit and scope of the invention.
Claims (8)
1. A combination cover, the combination cover comprising:
The needle valve core is provided with a valve core upper cover and a valve core lower cover which are vertically connected, a valve core rubber plug is arranged between the valve core upper cover and the valve core lower cover, the valve core lower cover is provided with a needle-shaped head, a liquid flow channel is arranged in the needle-shaped head, a plurality of liquid flow holes communicated with the liquid flow channel are formed in the end part of the needle-shaped head, and the valve core rubber plug is provided with a cavity which is relatively communicated with the liquid flow channel;
the connecting cover is internally provided with a sealing film, the valve core lower cover is hermetically arranged in the connecting cover, and the needle-shaped head is arranged opposite to the sealing film;
the outer cover is sleeved outside the upper cover of the valve core and is hermetically arranged on the connecting cover;
the valve core lower cover is provided with a groove communicated with the liquid flow channel, and the lower end of the valve core rubber plug is positioned in the groove; the upper end of the valve core upper cover is sleeved at the upper end of the valve core rubber plug, a gap notch is formed at the upper end of the valve core rubber plug, and the gap notch is communicated with the cavity; the outer edge of the upper end of the valve core lower cover is provided with a sealing convex ring, the needle-shaped head is integrally formed at the lower end of the sealing convex ring, and the sealing convex ring is in interference fit with the connecting cover; the inner wall of the connecting cover is provided with a clamping part, and the sealing convex ring is clamped at the lower end of the clamping part in the state that the needle-shaped head pierces the sealing film.
2. The combination cover according to claim 1, wherein an annular protrusion is formed on an upper end surface of the valve core lower cover, and a lower end of the valve core upper cover is sleeved outside the annular protrusion.
3. The combination cover according to claim 1, wherein the fastening part is a fastening convex ring protruding on the inner wall of the connecting cover; or the buckling part is a plurality of buckling convex blocks, and the plurality of buckling convex blocks are convexly arranged on the inner wall of the connecting cover at intervals along the circumferential direction.
4. The combination cover of claim 1, wherein the upper end of the valve core upper cover is formed with an external thread section.
5. The combination cover of claim 1, wherein a rubber plug is provided in the connection cover, and the rubber plug is provided at the upper end of the sealing film and at the lower end of the needle-shaped head.
6. The combination cover as set forth in claim 1, wherein the outer cover has a breaking portion and a connecting portion, a connecting ring is formed at an outer edge of an upper end of the connecting cover, the connecting portion is welded to the connecting ring, and a frangible portion is formed between the breaking portion and the connecting portion.
7. The combination cover of claim 1, wherein the sealing collar has a diameter greater than an inner diameter of the outer cover.
8. The combination cover of claim 6, wherein the connecting portion has an inner diameter smaller than an inner diameter of the connecting cover.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610472180.2A CN107536711B (en) | 2016-06-24 | 2016-06-24 | Combined cover |
| PCT/CN2017/081052 WO2017219745A1 (en) | 2016-06-24 | 2017-04-19 | Combined cap |
| BR112018076896A BR112018076896A2 (en) | 2016-06-24 | 2017-04-19 | cover set. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610472180.2A CN107536711B (en) | 2016-06-24 | 2016-06-24 | Combined cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107536711A CN107536711A (en) | 2018-01-05 |
| CN107536711B true CN107536711B (en) | 2024-05-31 |
Family
ID=60783777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610472180.2A Active CN107536711B (en) | 2016-06-24 | 2016-06-24 | Combined cover |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN107536711B (en) |
| BR (1) | BR112018076896A2 (en) |
| WO (1) | WO2017219745A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113877644B (en) * | 2021-10-11 | 2022-11-15 | 北京梓晶生物科技有限公司 | Micro-fluidic device for realizing valve opening and closing |
| CN114557886A (en) * | 2022-01-21 | 2022-05-31 | 宁波汉科医疗器械有限公司 | Needleless connector and medicine adding assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004209278A (en) * | 2002-08-06 | 2004-07-29 | Fukai Kogyo Kk | Syringe connection port |
| CN204744978U (en) * | 2015-07-09 | 2015-11-11 | 四川科伦药业股份有限公司 | Polypropylene infusion bag convenient to flowing back |
| CN205948043U (en) * | 2016-06-24 | 2017-02-15 | 雷诺丽特恒迅包装科技（北京）有限公司 | Combined cap |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ548279A (en) * | 2003-12-18 | 2009-02-28 | Halkey Roberts Corp | Needleless access vial |
| CN2902282Y (en) * | 2006-04-20 | 2007-05-23 | 刘会臣 | Sealed type dosage transfusion bottle |
| US7967797B2 (en) * | 2009-05-19 | 2011-06-28 | Nexus Medical, Llc | Intravascular valve component with improved valve positioning |
| US8277424B2 (en) * | 2009-07-17 | 2012-10-02 | Pan Hsiu-Feng | Needle-less syringe adapter |
| WO2014143584A1 (en) * | 2013-03-14 | 2014-09-18 | Pharmajet Inc. | Vial adapter for a needle-free syringe |
| US9211231B2 (en) * | 2013-03-14 | 2015-12-15 | Carefusion 303, Inc. | Vial adapter for side engagement of vial cap |
| CN204972248U (en) * | 2015-07-17 | 2016-01-20 | 四川科伦药业股份有限公司 | Slidingtype polypropylene infusion bag's combined cover |
-
2016
- 2016-06-24 CN CN201610472180.2A patent/CN107536711B/en active Active
-
2017
- 2017-04-19 BR BR112018076896A patent/BR112018076896A2/en not_active Application Discontinuation
- 2017-04-19 WO PCT/CN2017/081052 patent/WO2017219745A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004209278A (en) * | 2002-08-06 | 2004-07-29 | Fukai Kogyo Kk | Syringe connection port |
| CN204744978U (en) * | 2015-07-09 | 2015-11-11 | 四川科伦药业股份有限公司 | Polypropylene infusion bag convenient to flowing back |
| CN205948043U (en) * | 2016-06-24 | 2017-02-15 | 雷诺丽特恒迅包装科技（北京）有限公司 | Combined cap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107536711A (en) | 2018-01-05 |
| BR112018076896A2 (en) | 2019-03-26 |
| WO2017219745A1 (en) | 2017-12-28 |
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