CN110384858B - Transfusion closed joint for preventing leakage of liquid medicine or body fluid - Google Patents
Transfusion closed joint for preventing leakage of liquid medicine or body fluidDownload PDFInfo
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- CN110384858B CN110384858BCN201810348547.9ACN201810348547ACN110384858BCN 110384858 BCN110384858 BCN 110384858BCN 201810348547 ACN201810348547 ACN 201810348547ACN 110384858 BCN110384858 BCN 110384858B
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- sleeve
- opening
- elastic valve
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1072—Tube connectors; Tube couplings with a septum present in the connector
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Translated fromChinese
Description
Technical Field
The invention relates to a liquid medicine injector, in particular to a joint respectively arranged on a medicine bottle or a human body end catheter and a needle-free infusion joint of an injector needle head or an infusion catheter.
Background
The liquid medicine syringe is used for injecting liquid medicine into a patient, the traditional liquid medicine syringe is provided with a needle head, the liquid medicine in the syringe can be injected into the patient through the needle head, but the needle head is easy to puncture articles or even injure medical care personnel, and therefore, a needle-free liquid medicine syringe without the needle head is developed at present. When the needle-free liquid medicine injector is used for replenishing liquid medicine, the needle-free liquid medicine injector is connected with a medicine bottle through a connector, and then the injector can extract the liquid medicine in the medicine bottle.
The connector generally includes a first connecting member and a second connecting member. The first connecting component is used for connecting an injector or a transfusion tube, the second connecting component is used for connecting a medicine bottle or a human body end catheter, and the first connecting component and the second connecting component are detachably connected and fixed. An elastic plug and a moving part are arranged in the first connecting component. The elastic plug selectively blocks the opening of the first connecting assembly connected with the second connecting assembly. The moving piece is kept against the elastic plug, and the moving piece selectively protrudes out of the first connecting assembly. When the first connecting assembly and the second connecting assembly are used, the second connecting assembly pushes against the moving piece to cause the moving piece to move and push the elastic plug to move, so that the elastic plug does not block the opening of the first connecting assembly any more, and the first connecting assembly and the second connecting assembly are communicated.
However, after the connector is used, when the first connecting assembly and the second connecting assembly are separated by half in the separation process of the first connecting assembly and the second connecting assembly, the distance between the second connecting assembly and the first connecting assembly is increased, and the second connecting assembly still pushes against the moving member to make the first connecting assembly unsealed, so that the liquid medicine can continuously flow to the space between the second connecting assembly and the first connecting assembly, and the first connecting assembly and the second connecting assembly can be sealed respectively until the first connecting assembly and the second connecting assembly are completely separated. Therefore, there is a liquid medicine residue at the openings of the first connecting component and the second connecting component, especially when the first connecting component and the second connecting component need to be separated temporarily during the transfusion process, a plurality of liquid medicines are left outside. The residual liquid medicine may contact with air to volatilize or directly contact with human body, and the liquid medicine itself may deteriorate or become harmful substance to cause infection of human body. In other words, the spilled liquid medicine is a potential hazard to the user.
In view of the above, a better solution is proposed, which is a problem to be solved in the art.
Disclosure of Invention
The invention mainly aims to provide an infusion closed connector capable of preventing liquid medicine or body fluid from leaking, and after the infusion closed connector is used, the liquid medicine is prevented from remaining on the outer surface of the needle-free infusion closed connector.
To achieve the above objects, the needle-free transfusion closed connector proposed by the present invention has one end detachably connected to a syringe or a transfusion tube and the other end detachably connected to a medicine bottle or a human body end conduit for communicating the syringe and the medicine bottle or the transfusion tube and the human body end conduit; the transfusion closed type joint comprises:
the first connecting component is detachably connected to the injector or the infusion tube and is communicated with the injector or the infusion tube; the first connecting assembly has:
a first sleeve having a first end, a second end, and a first channel formed therein; the first end of the first sleeve is detachably connected to the injector; the first channel penetrates through the first sleeve, extends from the first end of the first sleeve to the second end of the first sleeve and is communicated with the injector, and a first opening is formed at the second end of the first sleeve by the first channel;
a first elastic valve disposed in the first passage and tending to seal the first opening; and
a second connecting assembly detachably connected to the medicine bottle or the human body end conduit, communicated with the medicine bottle or the human body end conduit, and detachably connected to the first connecting assembly; the second connecting assembly has:
a second sleeve having a first end, a second end, and a second channel formed therein; the first end of the second sleeve is detachably connected to the medicine bottle, and the second end of the second sleeve is detachably connected to the second end of the first sleeve; the second channel penetrates through the second sleeve, extends from the first end of the second sleeve to the second end of the second sleeve and is communicated with the medicine bottle, and a second opening is formed at the second end of the second sleeve by the second channel;
the connecting part is positioned in the second channel and is provided with at least one lateral through hole, the lateral through hole penetrates through the side wall of the connecting part and is communicated with the inside of the connecting part, and the lateral through hole is adjacent to a closed end of the connecting part;
a second elastic valve disposed in the second passage and tending to seal the second opening;
when the first connecting assembly is connected with the second connecting assembly, the first sleeve pushes against the second elastic valve, so that the second elastic valve moves relative to the connecting portion to enable at least one lateral through hole of the connecting portion to be exposed out of the second elastic valve, and meanwhile, the closed end of the connecting portion pushes against the first elastic valve, so that the first opening is opened, and the first connecting assembly is communicated with the second connecting assembly.
Therefore, the present invention has an advantage in that the first elastic valve disposed in the first sleeve of the first connection assembly tends to seal the first opening of the first sleeve, thereby preventing the liquid medicine remaining in the first connection assembly from leaking. Meanwhile, the second elastic valve arranged in the second sleeve of the second connecting component enables the second elastic valve to tend to seal the second opening, so that the residual liquid medicine in the second connecting component can be prevented from leaking. Through the structure, the needle-free transfusion closed connector can reduce the chance of liquid medicine contacting air, and liquid medicine cannot be remained on the surfaces of the first connecting assembly and the second connecting assembly to breed bacteria, so that the transfusion process is more sanitary and safer. Therefore, the residual amount of the liquid medicine is small after the medicine bottle is used, and the amount of the liquid medicine left outside the medicine bottle is reduced to the minimum after the medicine bottle is used for extracting proper dose from precious chemotherapy medicines, so that the waste of medical resources can be reduced as much as possible, and medical wastes can also be reduced.
In the above-mentioned closed connector for preventing the leakage of the liquid medicine or the body fluid, the connecting portion further has a protruding column which is located at the closed end of the connecting portion and protrudes from the end surface of the closed end along the length direction of the connecting portion.
In the above-described transfusion closing type connector for preventing the leakage of the liquid medicine or the body fluid, the first elastic valve has a disk body portion formed with a plurality of communication holes for communicating both ends of the first passage; and a plug column which is fixedly arranged on the disc body part and selectively seals the first opening.
In the above-mentioned closed type joint for preventing the leakage of the liquid medicine or the body fluid, the plug is an elastic column, and can be deformed by the pushing of the connecting portion, thereby opening the first opening.
In the above-described infusion-sealing type connector for preventing leakage of medical solution or body fluid, the stopper cylinder is formed with a necked-down section.
In the above-mentioned infusion closed type connector for preventing the leakage of the liquid medicine or the body fluid, the first sleeve is further formed with a positioning groove surrounding the first passage; and the first elastic valve is also provided with a positioning part which is annularly arranged on the plug column, one end of the positioning part is connected with the disk body part, and the other end of the positioning part is arranged in the positioning groove.
In the above-mentioned closed joint for preventing the leakage of the liquid medicine or the body fluid, the first sleeve further forms a containing groove surrounding the first channel, and the containing groove and the plug column are respectively located at two sides of the tray body; the first elastic valve is also provided with a flexible part, one end of the flexible part is connected with the disk body part, and the other end of the flexible part is contained in the containing groove; the flexible portion can be deformed by the connection portion pushing against the plug post, thereby opening the first opening.
Drawings
Fig. 1 is a cross-sectional view illustrating a first connecting member and a second connecting member according to a first embodiment of the present invention when they are combined.
Fig. 2 is a cross-sectional view of the joint in combination with the first embodiment of the present invention.
Fig. 3 is a cross-sectional view of the first connecting element and the second connecting element separated according to the first embodiment of the present invention.
Fig. 4 is a cross-sectional view of a second connecting element according to the first embodiment of the present invention after being separated.
Fig. 5 is a schematic cross-sectional view of another aspect of the second connecting assembly according to the first embodiment of the invention.
Fig. 6 is an enlarged view of the first connecting assembly according to the first embodiment of the present invention.
Fig. 7 is an enlarged view of another aspect of the first connecting element according to the first embodiment of the invention.
Fig. 8 is an enlarged view of a first connecting assembly according to a second embodiment of the present invention.
Fig. 9 is an enlarged view of a first connecting assembly according to a third embodiment of the present invention.
Fig. 10 is a cross-sectional view of a first connecting element according to a third embodiment of the invention after being combined.
Fig. 11 is an enlarged view of a first connecting assembly according to a fourth embodiment of the present invention.
FIG. 12 is a schematic view of a second connector assembly according to the present invention including a connecting tube portion.
FIG. 13 is another schematic view of the present invention.
Description of reference numerals:
10first connection assembly 11 first sleeve
11afirst sleeve member 11b second sleeve member
111first channel 112 positioning slot
12 firstelastic valve 122 plug
20second connecting assembly 21 second sleeve
21athird sleeve part 21b fourth sleeve part
211second channel 22 connection
223third passage 23 second elastic valve
24 third elastomeric valve A Syringe
And B, medicine bottles.
Detailed Description
Please refer to fig. 1, fig. 2, and fig. 6. The invention provides a needle-free transfusion closed connector for preventing liquid medicine from leaking, one end of the needle-free transfusion closed connector is detachably connected with a syringe A, and the other end of the needle-free transfusion closed connector is detachably connected with a medicine bottle B so as to communicate the syringe A and the medicine bottle B. The needle-free transfusion closed type connector has a first connectingassembly 10 and a second connectingassembly 20.
Thefirst coupling assembly 10 is removably coupled to and communicates with a syringe a. The first connectingelement 10 has afirst sleeve 11 and a firstelastic valve 12.
Thefirst sleeve 11 is formed with a first end, a second end, and afirst channel 111, and is optionally formed with apositioning groove 112 and/or a receiving groove. The first end of thefirst sleeve 11 is detachably connected to the syringe a, for example, by screwing or engaging. Thefirst passage 111 extends through thefirst sleeve 11, extends from the first end of thefirst sleeve 11 to the second end of thefirst sleeve 11, and communicates with the syringe a. Thefirst channel 111 forms afirst opening 1110 at the second end of thefirst sleeve 11. Thepositioning slot 112 is located in thefirst sleeve 11, and is annularly disposed in thefirst channel 111 and communicated with thefirst channel 111. In this embodiment, thefirst sleeve 11 may have afirst sleeve member 11a and asecond sleeve member 11b, thefirst sleeve member 11a is detachably disposed on the syringe a, and thesecond sleeve member 11b is fixedly disposed on thefirst sleeve member 11 a. In other words, thefirst sleeve part 11a forms a first end of thefirst sleeve 11, while thesecond sleeve part 11b forms a second end of thefirst sleeve 11. Thefirst channel 111 is disposed through thefirst sleeve member 11a and thesecond sleeve member 11b, and thefirst opening 1110 is formed on thesecond sleeve member 11 b.
The firstelastic valve 12 is disposed in thefirst passage 111 and tends to seal thefirst opening 1110. The firstelastic valve 12 has adisk body 121 and aplug 122, and optionally has apositioning portion 123 and a flexingportion 124B (see fig. 9 and the third embodiment). Thedisc body portion 121 is sandwiched between the first andsecond sleeve members elastic valve 12 is positioned. Thetray body 121 may have elasticity and be formed with a plurality ofcommunication holes 1211 to communicate both ends of thefirst channel 111. Theplug 122 is fixedly disposed on thebody portion 121 and received in thesecond sleeve member 11b to selectively seal thefirst opening 1110. Specifically, theplug post 122 may be resilient and may optionally be formed with a necked-downsection 1220. The necked-down segment 1220 is located on the side of theplug 122 to allow theplug 122 to deflect more upon application of a force, thereby positively opening thefirst opening 1110 upon deflection of theplug 122.
The following are specific embodiments of thefirst sleeve 11 and the first elastic valve 12:
as shown in fig. 6, in the first embodiment, thesecond sleeve member 11b of thefirst sleeve 11 has apositioning slot 112, and the firstelastic valve 12 has apositioning portion 123. Thepositioning slot 112 surrounds not only thefirst channel 111 but also theplug 122. Thepositioning groove 112 may be concavely formed on the inner wall surface of thesecond sleeve member 11b and extend along the length direction of thefirst channel 111. Thepositioning portion 123 also surrounds theplug column 122, and one end thereof is connected to thedisk body portion 121, and the other end thereof is positioned in thepositioning groove 112. The firstelastic valve 12 can be held by thepositioning portion 123 to be held at the center of thefirst passage 111 after being reset.
In this embodiment, theplug post 122 is resilient and is formed with a necked-downsection 1220, but may be formed without the necked-downsection 1220 as shown in FIG. 7. The necked-down segment 1220 may comprise a notch formed in the sidewall of theplug post 122 such that the width of the necked-down segment 1220 is less than the width of the remainder of the plug post. Preferably, the notch of the necked-down segment 1220 is attached adjacent to thebody portion 121. In this embodiment, thepositioning portion 123 is in a sleeve shape and is accommodated and fixed in thepositioning groove 112, but in other embodiments, thepositioning portion 123 may be a convex rib or a convex column, and the like, as long as it can be fixed with thepositioning groove 112. Thefirst sleeve 11a and thesecond sleeve 11b clamp the fixeddisk portion 121, thepositioning portion 123 is disposed in thepositioning groove 112, and theplug 122 has elasticity, so that thefirst opening 1110 can be opened when theplug 122 is stressed, and thefirst opening 1110 can be restored to seal again when theplug 122 is not stressed.
As shown in fig. 8, in the second embodiment, thefirst sleeve 11 also has apositioning slot 112A, and the firstelastic valve 12 also has apositioning portion 123A. Thepositioning groove 112A is also recessed in the inner wall surface of thefirst passage 111, but extends in a direction perpendicular to the longitudinal direction of thefirst passage 111. Thepositioning portion 123A may have an extendingwall 1231A and arib 1232A. Theextension wall 1231A may be sleeve-shaped and surround theplug post 122. One end of the extendingwall 1231A is fixedly disposed on thedisc portion 121, and the protrudingrib 1232A protrudes from the other end of the extendingwall 1231A along a direction perpendicular to the length direction of thefirst channel 111, so that thedisc portion 121 can be accommodated and fixedly disposed in thepositioning groove 112A. The length of theplug post 122 may be longer in embodiments with theextended wall 1231A as compared to embodiments without theextended wall 1231A, and thus the degree of deflection of theplug post 122 may be greater after a force is applied, thereby positively opening thefirst opening 1110 after the deflection of theplug post 122.
As shown in fig. 9 and 10, in the third embodiment, thefirst sleeve 11 further has apositioning slot 112B and a receivingslot 113B, and the firstelastic valve 12 has apositioning portion 123B and a flexingportion 124B. Thepositioning slot 112B, thepositioning portion 123B and theplug column 122 of the present embodiment are similar to those of the first embodiment, and therefore, are not described in detail. The receivinggroove 113B is disposed around thefirst channel 111 and is communicated with thefirst channel 111, and the receiving groove and theplug column 122 are respectively located at two sides of thetray body 121. One end of theflexible portion 124B is connected to thetray portion 121, and the other end is received in the receivinggroove 113B. In this embodiment, theplug 122 may optionally have no elasticity, so the firstelastic valve 12 moves theplug 122 by deforming the flexingportion 124B, thereby opening thefirst opening 1110. In other embodiments, thefirst sleeve 11 may have only the receivinggroove 113B without thepositioning groove 112B, and the firstelastic valve 12 has the flexingportion 124B without thepositioning portion 123B.
As shown in fig. 11, in the fourth embodiment, thefirst sleeve 11 has apositioning groove 112C, and thepositioning groove 112C is recessed in the inner wall surface of thefirst channel 111, but extends along a direction perpendicular to the length direction of thefirst channel 111. The firstelastic valve 12 may not have the positioning portion and the flexing portion, but thedisk body portion 121 is formed with thering groove 1212C. Specifically, thedisk body 121 is accommodated and fixed in thepositioning groove 112C, and thering groove 1212C may be formed on the upper side and the lower side of thedisk body 121 correspondingly, and thedisk body 121 has elasticity. Therefore, when theplug post 122 is forced, theplug post 122 and thedisc portion 121 will both flex, thereby reliably opening thefirst opening 1110 after theplug post 122 flexes. In addition, in the present embodiment, thedisk portion 121 may not be formed with the ring groove, and theplug post 122 may not be formed with the necked-down section. In other words, the upper and lower surfaces of thedisk body 121 may be parallel, and theplug column 122 may be a right circular cylinder.
The first embodiment is described below as an example.
Please refer to fig. 1 to fig. 4 again. Thesecond coupling assembly 20 is detachably coupled to and communicates with the medicine bottle B, and is detachably coupled to thefirst coupling assembly 10. The second connectingassembly 20 has asecond sleeve 21, a connectingportion 22, a secondelastic valve 23, and optionally a thirdelastic valve 24.
Thesecond sleeve 21 is formed with a first end, a second end, and asecond channel 211. The first end of thesecond sleeve 21 is detachably coupled to the medicine bottle B, and the second end of thesecond sleeve 21 is detachably coupled to the second end of thefirst sleeve 11. Thesecond channel 211 extends through thesecond sleeve 21 from the first end of thesecond sleeve 21 to the second end of thesecond sleeve 21 and communicates with the vial B, and thesecond channel 211 forms asecond opening 2110 at the second end of thesecond sleeve 21. In this embodiment, thesecond sleeve 21 may have athird sleeve 21a and a fourth sleeve 21B, thethird sleeve 21a is detachably connected to the second sleeve 11B of thefirst sleeve 11, the fourth sleeve 21B is fixedly arranged on thethird sleeve 21a, and the fourth sleeve 21B is detachably connected to the medicine bottle B. In other words, thethird sleeve part 21a forms a first end of thesecond sleeve 21 and thefourth sleeve part 21b forms a second end of thesecond sleeve 21. Thesecond channel 211 passes through thethird sleeve 21a and thefourth sleeve 21b, and thesecond opening 2110 is formed on thethird sleeve 21 a.
The connectingportion 22 is located in thesecond channel 211, and in the present embodiment, is movably disposed in thesecond channel 211. The connectingportion 22 is formed with anopen end 221, aclosed end 222, and athird passage 223. Thethird passage 223 is disposed in the connectingportion 22 and extends from theopen end 221 to theclosed end 222. Theclosed end 222 of the connectingportion 22 is selectively exposed and is formed with at least one lateral throughhole 224. The lateral throughhole 224 penetrates through the sidewall of the connectingportion 22 and communicates with thethird channel 223, and the lateral throughhole 224 is adjacent to theclosed end 222, so that the lateral throughhole 224 is selectively exposed along with theclosed end 222.
In the present embodiment, the connectingportion 22 may further have aconvex pillar 225. The protrudingcolumn 225 is located on theclosed end 222 and protrudes from an end surface of theclosed end 222 along a length direction of the connectingportion 22.
A secondelastomeric valve 23 is disposed within thesecond passage 211 and selectively seals thesecond opening 2110. The secondelastic valve 23 has afirst sealing portion 231 and a firstcircumferential portion 232. Thefirst sealing portion 231 is located at thesecond opening 2110 of thesecond sleeve 21, and the outer periphery of thefirst sealing portion 231 selectively seals against and abuts thesecond opening 2110. Thefirst sealing portion 231 is formed with a firstelastic opening 2310, and the firstelastic opening 2310 is selectively sleeved on the side wall of the connectingportion 22, or the firstelastic opening 2310 is automatically closed.
One end of the firstcircumferential portion 232 is disposed on thefirst sealing portion 231, and the other end abuts against the connectingportion 22. In the present embodiment, the firstcircumferential portion 232 is integrally formed by connecting thefirst seal portion 231; in other embodiments, the firstperipheral portion 232 and thefirst sealing portion 231 may be two independent elements, and the firstperipheral portion 232 pushes against thefirst sealing portion 231. The firstcircumferential portion 232 has elasticity, so that thefirst sealing portion 231 is located at thesecond opening 2110, and thus thefirst sealing portion 231 seals thesecond opening 2110 and the firstelastic opening 2310 is closed by itself.
The thirdelastic valve 24 is disposed in thesecond passage 211 and selectively blocks thesecond passage 211. In this embodiment, thethird sleeve 21a and thefourth sleeve 21b clamp and fix the thirdelastic valve 24. The thirdelastic valve 24 has asecond sealing portion 241 and optionally a secondperipheral portion 242. Thesecond sealing portion 241 is located in thesecond channel 211, and an outer peripheral edge of thesecond sealing portion 241 is sealed and abutted against an inner side surface of thesecond channel 211. Thesecond sealing portion 241 is formed with a secondelastic opening 2410, and the secondelastic opening 2410 is selectively sleeved on the connectingportion 22 and can be closed by itself to block thesecond channel 211.
One end of the secondcircumferential portion 242 is provided to thesecond seal portion 241, and the other end abuts against theconnection portion 22. In the present embodiment, the second ringperipheral portion 242 is integrally formed by connecting to thesecond seal portion 241; in other embodiments, the secondannular portion 242 and thesecond sealing portion 241 may be two independent elements, and the secondannular portion 242 pushes against thesecond sealing portion 241. Thesecond ring periphery 242 has elasticity, so thesecond sealing portion 241 can make theclosed end 222 of the connectingportion 22 tend to be held adjacent to thesecond opening 2110 of thesecond passage 211, and make the connectingportion 22 not pass through thesecond sealing portion 241.
Please refer to fig. 5. In another aspect of the second connectingassembly 20D of the present invention, it is similar to the second connecting assembly 20 (please compare fig. 4), except that in the second connectingassembly 20D, the connectingportion 22D is fixed to thesecond sleeve 21D, so that the connectingportion 22D cannot move relative to thesecond sleeve 21D. On the other hand, in this other aspect, the second connectingassembly 20D does not have the third elastic valve, but only has the secondelastic valve 23D, and the secondelastic valve 23D is also disposed around the connectingportion 22D and selectively seals thesecond opening 2110 of thesecond sleeve 21D. Therefore, the number of parts in the second connectingassembly 20D can be reduced, and the manufacturing process can be simplified and speeded.
With the above structure, before dispensing the liquid medicine, the first connectingassembly 10 is separated from the second connectingassembly 20, and then the first connectingassembly 10 is fixed on the syringe a and the second connectingassembly 20 is fixed on the medicine bottle B. At this time, under the elastic force of the firstelastic valve 12, theplug 122 of the firstelastic valve 12 seals thefirst opening 1110 of thefirst sleeve 11, thereby blocking thefirst passage 111 of thefirst sleeve 11, so that any medical fluid cannot flow into thefirst connection assembly 10 through thefirst opening 1110.
Meanwhile, under the action of the elastic force of the secondelastic valve 23, thefirst sealing portion 231 of the secondelastic valve 23 is located in thesecond opening 2110 of thesecond sleeve 21, and the connectingportion 22 does not pass through the firstelastic port 2310 of thefirst sealing portion 231, so that the firstelastic port 2310 is closed, and any medical fluid cannot flow into thesecond sleeve 21 from thesecond opening 2110. Meanwhile, the protrudingcolumn 225 of the connectingportion 22 is aligned with the firstelastic opening 2310, or can be accommodated in the firstelastic opening 2310, but does not expand the firstelastic opening 2310.
On the other hand, under the action of the self-elasticity of the thirdelastic valve 24, the secondannular portion 242 of the thirdelastic valve 24 pushes against the connectingportion 22, so that theclosed end 222 of the connectingportion 22 tends to be held adjacent to thesecond opening 2110 of thesecond passage 211, and the connectingportion 22 does not penetrate through the secondelastic opening 2410 of thesecond sealing portion 241 of the thirdelastic valve 24, so that the secondelastic opening 2410 is closed, and no liquid medicine can pass through the thirdelastic valve 24.
The first connectingmember 10 may then be connected to the second connectingmember 20. When the first connectingassembly 10 is connected to the second connectingassembly 20, thefirst sleeve 11 pushes the secondelastic valve 23, for example, the sidewall of thefirst channel 111 pushes thefirst sealing portion 231 of the secondelastic valve 23 to press the firstcircumferential portion 232 of the secondelastic valve 23 to flex, so that thefirst sealing portion 231 moves along the connectingportion 22 and opens the firstelastic opening 2310 to move downward along the outer side surface of the connectingportion 22, so that theclosed end 222 of the connectingportion 22 and the lateral throughhole 224 adjacent to theclosed end 222 are exposed out of thefirst sealing portion 231. And theconnection part 22 can more easily penetrate into the firstelastic port 2310 by theconvex pillar 225.
Since theconnection portion 22 is movable and is simultaneously pushed by the secondelastic valve 23 and the thirdelastic valve 24, when thefirst sleeve 11 is pushed against the secondelastic valve 23, the secondelastic valve 23 is pushed against theconnection portion 22, and theconnection portion 22 is pushed against the thirdelastic valve 24, so that the thirdelastic valve 24 is deflected and deformed, and theconnection portion 22 moves toward the medicine bottle B. Specifically, the connectingportion 22 moves to the openingend 221 of the connectingportion 22 to penetrate through the secondelastic port 2410, thereby communicating thesecond passage 211 with thethird passage 223.
On the other hand, when the first connectingassembly 10 is connected to the second connectingassembly 20, the exposed connectingportion 22 passes through thefirst opening 1110 and extends into thefirst passage 111 of thefirst sleeve 11, and pushes against the firstelastic valve 12, so that the firstelastic valve 12 is deflected and deformed to open thefirst opening 1110. Specifically, when the connectingportion 22 extends into thefirst channel 111, theboss 225 pushes against the firstelastic valve 12, so that the firstelastic valve 12 is deformed to open thefirst opening 1110. For example, as in the first embodiment, theplug post 122 of the firstelastic valve 12 can be deflected by being pushed by the connectingportion 22, and thefirst opening 1110 can be opened even if thedisk body portion 121 of the firstelastic valve 12 remains in place; or as in the fourth embodiment, the flexing portion 124 of the firstresilient valve 12 can deform as the connectingportion 22 pushes against theplug 122, causing theplug 122 to move in the direction of the syringe a, opening thefirst opening 1110. When thefirst opening 1110 is opened, thefirst passage 111 and thethird passage 223 are communicated with each other.
At this point, thefirst channel 111, thesecond channel 211 and thethird channel 223 are communicated with each other, so that the liquid medicine in the medicine bottle B can flow into the syringe a through the medicine bottle B, thesecond channel 211, thethird channel 223 and thefirst channel 111 in sequence.
When the infusion is completed, in the process of separating thefirst connection assembly 10 from thesecond connection assembly 20 again, the sidewall of thefirst channel 111 will move out of thesecond channel 211 slowly, and thefirst sealing portion 231 of the secondelastic valve 23 will move towards thefirst connection assembly 10 and continuously abut against the periphery of thefirst opening 1110 of thefirst channel 111, while theconnection portion 22 is retained in the firstelastic opening 2310 of thefirst sealing portion 231, so that the distance between thefirst channel 111 and thesecond channel 211 will not increase in the separation process.
When the first connectingassembly 10 is further separated from the second connectingassembly 20, thefirst sealing portion 231 is continuously moved toward the first connectingassembly 10 and covers the lateral throughhole 224 of the connectingportion 22, thereby isolating thefirst passage 111 and thethird passage 223. Subsequently, thefirst sealing portion 231 covers the protrudingpillar 225, so that the protrudingpillar 225 no longer abuts against theplug pillar 122. At this time, theconnection portion 22 is completely covered by thefirst sealing portion 231, and the firstelastic port 2310 is completely closed; the firstelastic valve 12 is no longer forced to return to its original shape, so that thefirst opening 1110 can be sealed.
Then, as the sidewall of thefirst channel 111 continues to move out of thesecond channel 211, thefirst sealing portion 231 also continues to move toward thesecond opening 2110. When the sidewall of thefirst channel 111 is completely moved out of thesecond channel 211, thefirst sealing part 231 is also moved to thesecond opening 2110 and seals thesecond opening 2110; at this time, the first connectingassembly 10 is completely separated from the second connectingassembly 20. Therefore, the medical fluid remaining in thefirst sleeve 11 does not flow out through thefirst opening 1110, and no medical fluid remains outside thefirst sleeve 11. Meanwhile, the thirdelastic valve 24 separates the two ends of thesecond channel 211 after being restored, so as to increase the sealing performance inside the second connectingassembly 20 and prevent the liquid medicine from flowing into thesecond sleeve 21 from the medicine bottle B.
Therefore, during the separation of thefirst connection assembly 10 and thesecond connection assembly 20, thefirst sealing portion 231 covers the lateral throughhole 224 first, so that the medical fluid does not flow into thefirst channel 111 through the lateral throughhole 224 any more. Then, thefirst sealing portion 231 covers the protrudingpillar 225 and the protrudingpillar 225 is separated from the firstelastic valve 12, so that the firstelastic valve 12 seals thefirst opening 1110, and thus the liquid medicine does not flow back to the second connectingassembly 20 from thefirst opening 1110. In the process of continuing the separation, thefirst sealing portion 231 continuously abuts against the sidewall of thefirst channel 111, so that no gap is formed between thefirst sealing portion 231 and thefirst opening 1110 to contain the liquid medicine. Therefore, when thefirst connection module 10 and thesecond connection module 20 are completely separated, thefirst sealing portion 231 seals thesecond opening 2110, so that thefirst opening 1110 and thesecond opening 2110 are not left with liquid medicine.
Please refer to fig. 12 and fig. 13. The invention can be used for connecting an injector and a medicine bottle, and can also be used for connecting an infusion bag C1 and a human body. Specifically, two ends of an infusion tube C2 are respectively communicated with the infusion bag C1 and thefirst connection module 10, so that the infusion bag C1 is communicated with thefirst connection module 10. Similarly, a human body end catheter D has a needle (not shown) at one end and asecond connector assembly 20 at the other end. The infusion tube C2 can directly connect the infusion bag C1 with the first connecting module 10 (as shown in fig. 12), or can be serially connected with a shunt head C3 (as shown in fig. 13) to input two kinds of liquid medicines simultaneously. Further, as shown in fig. 1, if not used for connecting a vial, the lower end of the second connectingunit 20 may not be formed with a screw part but with a connectingtube part 25E, and a plurality of connectingtube parts 25E may be formed to simultaneously connect a plurality of body-side guide tubes D.
In summary, the two ends of the needle-free transfusion closed connector of the present invention can be connected to a syringe a and a medicine bottle B respectively, so that the medicine liquid in the medicine bottle B can be introduced into the syringe a through the needle-free transfusion closed connector of the present invention. After the liquid medicine is delivered, thefirst connection assembly 10 and thesecond connection assembly 20 of the needle-free transfusion closed connector of the present invention can be separated, and the firstelastic valve 12 disposed in thefirst sleeve 11 of thefirst connection assembly 10 makes the firstelastic valve 12 tend to seal thefirst opening 1110 of thefirst sleeve 11, so that the liquid medicine remaining in thefirst connection assembly 10 can be prevented from leaking. Meanwhile, the secondelastic valve 23 disposed in thesecond sleeve 21 of thesecond connection assembly 20 makes the secondelastic valve 23 tend to seal thesecond opening 2110, so that the liquid medicine remaining in thesecond connection assembly 20 can be prevented from leaking. By the sealing method of sealing thefirst opening 1110 and then sealing thesecond opening 2110, the needle-free transfusion closed connector of the invention can reduce the chance of the liquid medicine contacting the air, and the surfaces of the first connectingassembly 10 and the second connectingassembly 20 do not have the chance of remaining the liquid medicine and contacting the human body, thereby ensuring that the transfusion process is more sanitary and safer. Therefore, the residual amount of the liquid medicine after the use of the invention is small, and the amount of the liquid medicine left outside the medicine bottle B is reduced to the minimum after the medicine bottle B of the precious chemotherapy medicine is extracted with proper dose, thereby reducing the waste of medical resources as much as possible and reducing medical wastes.
Claims (7)
1. An infusion closed joint for preventing leakage of liquid medicine or body fluid, one end of which is detachably connected to a syringe or an infusion tube, and the other end of which is detachably connected to a medicine bottle or a human body end conduit so as to communicate the syringe and the medicine bottle or the infusion tube and the human body end conduit; the transfusion closed type joint comprises:
the first connecting component is detachably connected to the injector or the infusion tube and is communicated with the injector or the infusion tube; the first connecting assembly has:
a first sleeve having a first end, a second end, and a first channel formed therein; the first end of the first sleeve is detachably connected to the injector; the first channel penetrates through the first sleeve, extends from the first end of the first sleeve to the second end of the first sleeve and is communicated with the injector, and a first opening is formed at the second end of the first sleeve by the first channel;
a first elastic valve disposed in the first passage and tending to seal the first opening; and
a second connecting assembly detachably connected to the medicine bottle or the human body end conduit, communicated with the medicine bottle or the human body end conduit, and detachably connected to the first connecting assembly; the second connecting assembly has:
a second sleeve having a first end, a second end, and a second channel formed therein; the first end of the second sleeve is detachably connected to the medicine bottle, and the second end of the second sleeve is detachably connected to the second end of the first sleeve; the second channel penetrates through the second sleeve, extends from the first end of the second sleeve to the second end of the second sleeve and is communicated with the medicine bottle, and a second opening is formed at the second end of the second sleeve by the second channel;
the connecting part is positioned in the second channel and is provided with at least one lateral through hole, the lateral through hole penetrates through the side wall of the connecting part and is communicated with the inside of the connecting part, and the lateral through hole is adjacent to a closed end of the connecting part;
a second elastic valve disposed in the second passage and tending to seal the second opening;
when the first connecting assembly is connected with the second connecting assembly, the first sleeve pushes against the second elastic valve, so that the second elastic valve moves relative to the connecting portion to enable at least one lateral through hole of the connecting portion to be exposed out of the second elastic valve, and meanwhile, the closed end of the connecting portion pushes against the first elastic valve, so that the first opening is opened, and the first connecting assembly is communicated with the second connecting assembly.
2. The closed type joint for infusion of claim 1, wherein the connection portion further comprises a protrusion protruding from an end surface of the closed end along a length direction of the connection portion.
3. The transfusion closing type connector preventing leakage of medical solution or body fluid according to claim 1 or 2, wherein the first elastic valve has:
a disc body formed with a plurality of communication holes to communicate both ends of the first passage; and
a plug fixed to the disk body and selectively sealing the first opening.
4. The joint of claim 3, wherein the plug is a resilient cylinder and is deformed by the connection portion, thereby opening the first opening.
5. The administration-blocking type adaptor for preventing leakage of medical liquid or body fluid according to claim 4, wherein the plunger is formed with a necked-down section.
6. The infusion lock type connector preventing leakage of medical solution or body fluid according to claim 4, wherein:
the first sleeve is also provided with a positioning groove which surrounds the first channel; and
the first elastic valve also has a positioning part which is arranged around the plug column, and one end of the positioning part is connected with the disk body part, and the other end is arranged in the positioning groove.
7. The infusion lock type connector preventing leakage of medical solution or body fluid according to claim 3, wherein:
the first sleeve is also provided with a containing groove which surrounds the first channel, and the containing groove and the plug column are respectively positioned at two sides of the dish body part; and
the first elastic valve is also provided with a flexible part, one end of the flexible part is connected with the disk body part, and the other end of the flexible part is contained in the containing groove; the flexible portion can be deformed by the connection portion pushing against the plug post, thereby opening the first opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810348547.9ACN110384858B (en) | 2018-04-18 | 2018-04-18 | Transfusion closed joint for preventing leakage of liquid medicine or body fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810348547.9ACN110384858B (en) | 2018-04-18 | 2018-04-18 | Transfusion closed joint for preventing leakage of liquid medicine or body fluid |
Publications (2)
| Publication Number | Publication Date |
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| CN110384858A CN110384858A (en) | 2019-10-29 |
| CN110384858Btrue CN110384858B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810348547.9AActiveCN110384858B (en) | 2018-04-18 | 2018-04-18 | Transfusion closed joint for preventing leakage of liquid medicine or body fluid |
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| CN (1) | CN110384858B (en) |
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|---|---|
| CN110384858A (en) | 2019-10-29 |
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