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 fluid Download PDFInfo
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- CN110384858B CN110384858B CN201810348547.9A CN201810348547A CN110384858B CN 110384858 B CN110384858 B CN 110384858B CN 201810348547 A CN201810348547 A CN 201810348547A CN 110384858 B CN110384858 B CN 110384858B
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- sleeve
- opening
- elastic valve
- channel
- connecting assembly
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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
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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
- A61M2039/1072—Tube connectors; Tube couplings with a septum present in the connector
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- General Health & Medical Sciences (AREA)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides an infusion closed connector for preventing liquid medicine or body fluid from leaking, which is provided with a first connecting component and a second connecting component. The first connecting assembly has a first sleeve defining a first opening and a first elastomeric valve tending to seal the first opening. The second connecting component is provided with a second sleeve and a second elastic valve, the second sleeve forms a second opening, and the second elastic valve is inclined to seal the second opening. The first opening of the first sleeve is prone to be sealed through the first elastic valve, and the second opening is prone to be sealed through the second elastic valve, so that residual liquid medicine in the injector and infusion catheter connecting assembly, the medicine bottle and the human body end connecting assembly can be prevented from leaking outwards, and the bidirectional sealing device can be used for preventing the liquid medicine from leaking outwards when the medicine is added or the connection and the pulling-out are carried out after the medicine is infused.
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:
10 first connection assembly 11 first sleeve
11a first sleeve member 11b second sleeve member
111 first channel 112 positioning slot
12 first elastic valve 122 plug
20 second connecting assembly 21 second sleeve
21a third sleeve part 21b fourth sleeve part
211 second channel 22 connection
223 third 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 connecting assembly 10 and a second connecting assembly 20.
The first coupling assembly 10 is removably coupled to and communicates with a syringe a. The first connecting element 10 has a first sleeve 11 and a first elastic valve 12.
The first sleeve 11 is formed with a first end, a second end, and a first channel 111, and is optionally formed with a positioning groove 112 and/or a receiving groove. The first end of the first sleeve 11 is detachably connected to the syringe a, for example, by screwing or engaging. The first passage 111 extends through the first sleeve 11, extends from the first end of the first sleeve 11 to the second end of the first sleeve 11, and communicates with the syringe a. The first channel 111 forms a first opening 1110 at the second end of the first sleeve 11. The positioning slot 112 is located in the first sleeve 11, and is annularly disposed in the first channel 111 and communicated with the first channel 111. In this embodiment, the first sleeve 11 may have a first sleeve member 11a and a second sleeve member 11b, the first sleeve member 11a is detachably disposed on the syringe a, and the second sleeve member 11b is fixedly disposed on the first sleeve member 11 a. In other words, the first sleeve part 11a forms a first end of the first sleeve 11, while the second sleeve part 11b forms a second end of the first sleeve 11. The first channel 111 is disposed through the first sleeve member 11a and the second sleeve member 11b, and the first opening 1110 is formed on the second sleeve member 11 b.
The first elastic valve 12 is disposed in the first passage 111 and tends to seal the first opening 1110. The first elastic valve 12 has a disk body 121 and a plug 122, and optionally has a positioning portion 123 and a flexing portion 124B (see fig. 9 and the third embodiment). The disc body portion 121 is sandwiched between the first and second sleeve members 11a and 11b, whereby the first elastic valve 12 is positioned. The tray body 121 may have elasticity and be formed with a plurality of communication holes 1211 to communicate both ends of the first channel 111. The plug 122 is fixedly disposed on the body portion 121 and received in the second sleeve member 11b to selectively seal the first opening 1110. Specifically, the plug post 122 may be resilient and may optionally be formed with a necked-down section 1220. The necked-down segment 1220 is located on the side of the plug 122 to allow the plug 122 to deflect more upon application of a force, thereby positively opening the first opening 1110 upon deflection of the plug 122.
The following are specific embodiments of the first sleeve 11 and the first elastic valve 12:
as shown in fig. 6, in the first embodiment, the second sleeve member 11b of the first sleeve 11 has a positioning slot 112, and the first elastic valve 12 has a positioning portion 123. The positioning slot 112 surrounds not only the first channel 111 but also the plug 122. The positioning groove 112 may be concavely formed on the inner wall surface of the second sleeve member 11b and extend along the length direction of the first channel 111. The positioning portion 123 also surrounds the plug column 122, and one end thereof is connected to the disk body portion 121, and the other end thereof is positioned in the positioning groove 112. The first elastic valve 12 can be held by the positioning portion 123 to be held at the center of the first passage 111 after being reset.
In this embodiment, the plug post 122 is resilient and is formed with a necked-down section 1220, but may be formed without the necked-down section 1220 as shown in FIG. 7. The necked-down segment 1220 may comprise a notch formed in the sidewall of the plug 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 the body portion 121. In this embodiment, the positioning portion 123 is in a sleeve shape and is accommodated and fixed in the positioning groove 112, but in other embodiments, the positioning portion 123 may be a convex rib or a convex column, and the like, as long as it can be fixed with the positioning groove 112. The first sleeve 11a and the second sleeve 11b clamp the fixed disk portion 121, the positioning portion 123 is disposed in the positioning groove 112, and the plug 122 has elasticity, so that the first opening 1110 can be opened when the plug 122 is stressed, and the first opening 1110 can be restored to seal again when the plug 122 is not stressed.
As shown in fig. 8, in the second embodiment, the first sleeve 11 also has a positioning slot 112A, and the first elastic valve 12 also has a positioning portion 123A. The positioning groove 112A is also recessed in the inner wall surface of the first passage 111, but extends in a direction perpendicular to the longitudinal direction of the first passage 111. The positioning portion 123A may have an extending wall 1231A and a rib 1232A. The extension wall 1231A may be sleeve-shaped and surround the plug post 122. One end of the extending wall 1231A is fixedly disposed on the disc portion 121, and the protruding rib 1232A protrudes from the other end of the extending wall 1231A along a direction perpendicular to the length direction of the first channel 111, so that the disc portion 121 can be accommodated and fixedly disposed in the positioning groove 112A. The length of the plug post 122 may be longer in embodiments with the extended wall 1231A as compared to embodiments without the extended wall 1231A, and thus the degree of deflection of the plug post 122 may be greater after a force is applied, thereby positively opening the first opening 1110 after the deflection of the plug post 122.
As shown in fig. 9 and 10, in the third embodiment, the first sleeve 11 further has a positioning slot 112B and a receiving slot 113B, and the first elastic valve 12 has a positioning portion 123B and a flexing portion 124B. The positioning slot 112B, the positioning portion 123B and the plug column 122 of the present embodiment are similar to those of the first embodiment, and therefore, are not described in detail. The receiving groove 113B is disposed around the first channel 111 and is communicated with the first channel 111, and the receiving groove and the plug column 122 are respectively located at two sides of the tray body 121. One end of the flexible portion 124B is connected to the tray portion 121, and the other end is received in the receiving groove 113B. In this embodiment, the plug 122 may optionally have no elasticity, so the first elastic valve 12 moves the plug 122 by deforming the flexing portion 124B, thereby opening the first opening 1110. In other embodiments, the first sleeve 11 may have only the receiving groove 113B without the positioning groove 112B, and the first elastic valve 12 has the flexing portion 124B without the positioning portion 123B.
As shown in fig. 11, in the fourth embodiment, the first sleeve 11 has a positioning groove 112C, and the positioning groove 112C is recessed in the inner wall surface of the first channel 111, but extends along a direction perpendicular to the length direction of the first channel 111. The first elastic valve 12 may not have the positioning portion and the flexing portion, but the disk body portion 121 is formed with the ring groove 1212C. Specifically, the disk body 121 is accommodated and fixed in the positioning groove 112C, and the ring groove 1212C may be formed on the upper side and the lower side of the disk body 121 correspondingly, and the disk body 121 has elasticity. Therefore, when the plug post 122 is forced, the plug post 122 and the disc portion 121 will both flex, thereby reliably opening the first opening 1110 after the plug post 122 flexes. In addition, in the present embodiment, the disk portion 121 may not be formed with the ring groove, and the plug post 122 may not be formed with the necked-down section. In other words, the upper and lower surfaces of the disk body 121 may be parallel, and the plug 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. The second coupling assembly 20 is detachably coupled to and communicates with the medicine bottle B, and is detachably coupled to the first coupling assembly 10. The second connecting assembly 20 has a second sleeve 21, a connecting portion 22, a second elastic valve 23, and optionally a third elastic valve 24.
The second sleeve 21 is formed with a first end, a second end, and a second channel 211. The first end of the second sleeve 21 is detachably coupled to the medicine bottle B, and the second end of the second sleeve 21 is detachably coupled to the second end of the first sleeve 11. The second channel 211 extends through the second sleeve 21 from the first end of the second sleeve 21 to the second end of the second sleeve 21 and communicates with the vial B, and the second channel 211 forms a second opening 2110 at the second end of the second sleeve 21. In this embodiment, the second sleeve 21 may have a third sleeve 21a and a fourth sleeve 21B, the third sleeve 21a is detachably connected to the second sleeve 11B of the first sleeve 11, the fourth sleeve 21B is fixedly arranged on the third sleeve 21a, and the fourth sleeve 21B is detachably connected to the medicine bottle B. In other words, the third sleeve part 21a forms a first end of the second sleeve 21 and the fourth sleeve part 21b forms a second end of the second sleeve 21. The second channel 211 passes through the third sleeve 21a and the fourth sleeve 21b, and the second opening 2110 is formed on the third sleeve 21 a.
The connecting portion 22 is located in the second channel 211, and in the present embodiment, is movably disposed in the second channel 211. The connecting portion 22 is formed with an open end 221, a closed end 222, and a third passage 223. The third passage 223 is disposed in the connecting portion 22 and extends from the open end 221 to the closed end 222. The closed end 222 of the connecting portion 22 is selectively exposed and is formed with at least one lateral through hole 224. The lateral through hole 224 penetrates through the sidewall of the connecting portion 22 and communicates with the third channel 223, and the lateral through hole 224 is adjacent to the closed end 222, so that the lateral through hole 224 is selectively exposed along with the closed end 222.
In the present embodiment, the connecting portion 22 may further have a convex pillar 225. The protruding column 225 is located on the closed end 222 and protrudes from an end surface of the closed end 222 along a length direction of the connecting portion 22.
A second elastomeric valve 23 is disposed within the second passage 211 and selectively seals the second opening 2110. The second elastic valve 23 has a first sealing portion 231 and a first circumferential portion 232. The first sealing portion 231 is located at the second opening 2110 of the second sleeve 21, and the outer periphery of the first sealing portion 231 selectively seals against and abuts the second opening 2110. The first sealing portion 231 is formed with a first elastic opening 2310, and the first elastic opening 2310 is selectively sleeved on the side wall of the connecting portion 22, or the first elastic opening 2310 is automatically closed.
One end of the first circumferential portion 232 is disposed on the first sealing portion 231, and the other end abuts against the connecting portion 22. In the present embodiment, the first circumferential portion 232 is integrally formed by connecting the first seal portion 231; in other embodiments, the first peripheral portion 232 and the first sealing portion 231 may be two independent elements, and the first peripheral portion 232 pushes against the first sealing portion 231. The first circumferential portion 232 has elasticity, so that the first sealing portion 231 is located at the second opening 2110, and thus the first sealing portion 231 seals the second opening 2110 and the first elastic opening 2310 is closed by itself.
The third elastic valve 24 is disposed in the second passage 211 and selectively blocks the second passage 211. In this embodiment, the third sleeve 21a and the fourth sleeve 21b clamp and fix the third elastic valve 24. The third elastic valve 24 has a second sealing portion 241 and optionally a second peripheral portion 242. The second sealing portion 241 is located in the second channel 211, and an outer peripheral edge of the second sealing portion 241 is sealed and abutted against an inner side surface of the second channel 211. The second sealing portion 241 is formed with a second elastic opening 2410, and the second elastic opening 2410 is selectively sleeved on the connecting portion 22 and can be closed by itself to block the second channel 211.
One end of the second circumferential portion 242 is provided to the second seal portion 241, and the other end abuts against the connection portion 22. In the present embodiment, the second ring peripheral portion 242 is integrally formed by connecting to the second seal portion 241; in other embodiments, the second annular portion 242 and the second sealing portion 241 may be two independent elements, and the second annular portion 242 pushes against the second sealing portion 241. The second ring periphery 242 has elasticity, so the second sealing portion 241 can make the closed end 222 of the connecting portion 22 tend to be held adjacent to the second opening 2110 of the second passage 211, and make the connecting portion 22 not pass through the second sealing portion 241.
Please refer to fig. 5. In another aspect of the second connecting assembly 20D of the present invention, it is similar to the second connecting assembly 20 (please compare fig. 4), except that in the second connecting assembly 20D, the connecting portion 22D is fixed to the second sleeve 21D, so that the connecting portion 22D cannot move relative to the second sleeve 21D. On the other hand, in this other aspect, the second connecting assembly 20D does not have the third elastic valve, but only has the second elastic valve 23D, and the second elastic valve 23D is also disposed around the connecting portion 22D and selectively seals the second opening 2110 of the second sleeve 21D. Therefore, the number of parts in the second connecting assembly 20D can be reduced, and the manufacturing process can be simplified and speeded.
With the above structure, before dispensing the liquid medicine, the first connecting assembly 10 is separated from the second connecting assembly 20, and then the first connecting assembly 10 is fixed on the syringe a and the second connecting assembly 20 is fixed on the medicine bottle B. At this time, under the elastic force of the first elastic valve 12, the plug 122 of the first elastic valve 12 seals the first opening 1110 of the first sleeve 11, thereby blocking the first passage 111 of the first sleeve 11, so that any medical fluid cannot flow into the first connection assembly 10 through the first opening 1110.
Meanwhile, under the action of the elastic force of the second elastic valve 23, the first sealing portion 231 of the second elastic valve 23 is located in the second opening 2110 of the second sleeve 21, and the connecting portion 22 does not pass through the first elastic port 2310 of the first sealing portion 231, so that the first elastic port 2310 is closed, and any medical fluid cannot flow into the second sleeve 21 from the second opening 2110. Meanwhile, the protruding column 225 of the connecting portion 22 is aligned with the first elastic opening 2310, or can be accommodated in the first elastic opening 2310, but does not expand the first elastic opening 2310.
On the other hand, under the action of the self-elasticity of the third elastic valve 24, the second annular portion 242 of the third elastic valve 24 pushes against the connecting portion 22, so that the closed end 222 of the connecting portion 22 tends to be held adjacent to the second opening 2110 of the second passage 211, and the connecting portion 22 does not penetrate through the second elastic opening 2410 of the second sealing portion 241 of the third elastic valve 24, so that the second elastic opening 2410 is closed, and no liquid medicine can pass through the third elastic valve 24.
The first connecting member 10 may then be connected to the second connecting member 20. When the first connecting assembly 10 is connected to the second connecting assembly 20, the first sleeve 11 pushes the second elastic valve 23, for example, the sidewall of the first channel 111 pushes the first sealing portion 231 of the second elastic valve 23 to press the first circumferential portion 232 of the second elastic valve 23 to flex, so that the first sealing portion 231 moves along the connecting portion 22 and opens the first elastic opening 2310 to move downward along the outer side surface of the connecting portion 22, so that the closed end 222 of the connecting portion 22 and the lateral through hole 224 adjacent to the closed end 222 are exposed out of the first sealing portion 231. And the connection part 22 can more easily penetrate into the first elastic port 2310 by the convex pillar 225.
Since the connection portion 22 is movable and is simultaneously pushed by the second elastic valve 23 and the third elastic valve 24, when the first sleeve 11 is pushed against the second elastic valve 23, the second elastic valve 23 is pushed against the connection portion 22, and the connection portion 22 is pushed against the third elastic valve 24, so that the third elastic valve 24 is deflected and deformed, and the connection portion 22 moves toward the medicine bottle B. Specifically, the connecting portion 22 moves to the opening end 221 of the connecting portion 22 to penetrate through the second elastic port 2410, thereby communicating the second passage 211 with the third passage 223.
On the other hand, when the first connecting assembly 10 is connected to the second connecting assembly 20, the exposed connecting portion 22 passes through the first opening 1110 and extends into the first passage 111 of the first sleeve 11, and pushes against the first elastic valve 12, so that the first elastic valve 12 is deflected and deformed to open the first opening 1110. Specifically, when the connecting portion 22 extends into the first channel 111, the boss 225 pushes against the first elastic valve 12, so that the first elastic valve 12 is deformed to open the first opening 1110. For example, as in the first embodiment, the plug post 122 of the first elastic valve 12 can be deflected by being pushed by the connecting portion 22, and the first opening 1110 can be opened even if the disk body portion 121 of the first elastic valve 12 remains in place; or as in the fourth embodiment, the flexing portion 124 of the first resilient valve 12 can deform as the connecting portion 22 pushes against the plug 122, causing the plug 122 to move in the direction of the syringe a, opening the first opening 1110. When the first opening 1110 is opened, the first passage 111 and the third passage 223 are communicated with each other.
At this point, the first channel 111, the second channel 211 and the third 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, the second channel 211, the third channel 223 and the first channel 111 in sequence.
When the infusion is completed, in the process of separating the first connection assembly 10 from the second connection assembly 20 again, the sidewall of the first channel 111 will move out of the second channel 211 slowly, and the first sealing portion 231 of the second elastic valve 23 will move towards the first connection assembly 10 and continuously abut against the periphery of the first opening 1110 of the first channel 111, while the connection portion 22 is retained in the first elastic opening 2310 of the first sealing portion 231, so that the distance between the first channel 111 and the second channel 211 will not increase in the separation process.
When the first connecting assembly 10 is further separated from the second connecting assembly 20, the first sealing portion 231 is continuously moved toward the first connecting assembly 10 and covers the lateral through hole 224 of the connecting portion 22, thereby isolating the first passage 111 and the third passage 223. Subsequently, the first sealing portion 231 covers the protruding pillar 225, so that the protruding pillar 225 no longer abuts against the plug pillar 122. At this time, the connection portion 22 is completely covered by the first sealing portion 231, and the first elastic port 2310 is completely closed; the first elastic valve 12 is no longer forced to return to its original shape, so that the first opening 1110 can be sealed.
Then, as the sidewall of the first channel 111 continues to move out of the second channel 211, the first sealing portion 231 also continues to move toward the second opening 2110. When the sidewall of the first channel 111 is completely moved out of the second channel 211, the first sealing part 231 is also moved to the second opening 2110 and seals the second opening 2110; at this time, the first connecting assembly 10 is completely separated from the second connecting assembly 20. Therefore, the medical fluid remaining in the first sleeve 11 does not flow out through the first opening 1110, and no medical fluid remains outside the first sleeve 11. Meanwhile, the third elastic valve 24 separates the two ends of the second channel 211 after being restored, so as to increase the sealing performance inside the second connecting assembly 20 and prevent the liquid medicine from flowing into the second sleeve 21 from the medicine bottle B.
Therefore, during the separation of the first connection assembly 10 and the second connection assembly 20, the first sealing portion 231 covers the lateral through hole 224 first, so that the medical fluid does not flow into the first channel 111 through the lateral through hole 224 any more. Then, the first sealing portion 231 covers the protruding pillar 225 and the protruding pillar 225 is separated from the first elastic valve 12, so that the first elastic valve 12 seals the first opening 1110, and thus the liquid medicine does not flow back to the second connecting assembly 20 from the first opening 1110. In the process of continuing the separation, the first sealing portion 231 continuously abuts against the sidewall of the first channel 111, so that no gap is formed between the first sealing portion 231 and the first opening 1110 to contain the liquid medicine. Therefore, when the first connection module 10 and the second connection module 20 are completely separated, the first sealing portion 231 seals the second opening 2110, so that the first opening 1110 and the second 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 the first connection module 10, so that the infusion bag C1 is communicated with the first connection module 10. Similarly, a human body end catheter D has a needle (not shown) at one end and a second 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 connecting unit 20 may not be formed with a screw part but with a connecting tube part 25E, and a plurality of connecting tube 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, the first connection assembly 10 and the second connection assembly 20 of the needle-free transfusion closed connector of the present invention can be separated, and the first elastic valve 12 disposed in the first sleeve 11 of the first connection assembly 10 makes the first elastic valve 12 tend to seal the first opening 1110 of the first sleeve 11, so that the liquid medicine remaining in the first connection assembly 10 can be prevented from leaking. Meanwhile, the second elastic valve 23 disposed in the second sleeve 21 of the second connection assembly 20 makes the second elastic valve 23 tend to seal the second opening 2110, so that the liquid medicine remaining in the second connection assembly 20 can be prevented from leaking. By the sealing method of sealing the first opening 1110 and then sealing the second 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 connecting assembly 10 and the second connecting assembly 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 |
|---|---|---|---|
| CN201810348547.9A CN110384858B (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 |
|---|---|---|---|
| CN201810348547.9A CN110384858B (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 |
| CN110384858B true CN110384858B (en) | 2021-05-18 |
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| CN201810348547.9A Active CN110384858B (en) | 2018-04-18 | 2018-04-18 | Transfusion closed joint for preventing leakage of liquid medicine or body fluid |
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| CN110384858A (en) | 2019-10-29 |
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