Soft bag medicine plug

Abstract

The utility model relates to a soft bag medicine plug which comprises a connector, the connector comprises a first circulation pipe and a second circulation pipe which are internally communicated, the first circulation pipe is inserted into a guide pipe of a soft bag, and the second circulation pipe is in butt joint with a nipple of an injector. A protective ring is arranged on the peripheral wall of the second runner pipe, and a containing space exists between the protective ring and the second runner pipe; a rubber plug is arranged at the end, away from the first runner pipe, of the second runner pipe and used for sealing the end, away from the soft bag, of the connector. A connecting ring is in threaded connection with the end, away from the first runner pipe, of the second runner pipe, the connecting ring is fixedly connected to the end, provided with the nipple, of the syringe barrel, the connecting ring is coaxially arranged on the outer side of the nipple, the distance between the connecting ring and the nipple is the thickness of the second runner pipe, and the nipple is inserted into the second runner pipe. The distance between the outer peripheral wall of the second runner pipe and the inner peripheral wall of the end, close to the injector, of the protection ring is consistent with the thickness of the connecting ring. According to the application, liquid medicine with high consistency can be conveniently added or extracted, and the sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a soft bag medicine plug. Background Art

[0002] An infusion bag is a soft bag used by hospitals to give infusions to patients. The infusion bag is heat-sealed around the perimeter with a non-PVC film to form an open bag body. A catheter (double tube or single tube) for injecting or extracting liquid medicine is then heat-welded to the opening of the bag body. The liquid medicine is added to the bag from the catheter or extracted from the bag through a syringe. Finally, a medicine plug is inserted into the opening of the catheter to seal it, forming a closed infusion environment.

[0003] In the related art, the medicine plug includes a connector, a rubber plug and an aluminum cover for circulating the medicine liquid. One end of the connector is inserted into the catheter of the soft bag, and the other end of the connector extends out of the catheter. The rubber plug is used to block the end of the connector outside the catheter. The aluminum cover is tightly pressed on the outside of the rubber plug, and a small hole is left in the middle of the aluminum cover. In the process of adding or extracting the medicine liquid, a syringe needs to be used in conjunction. The liquid outlet end of the syringe is a necked nipple, and a needle is tightly inserted in the nipple. After the needle passes through the small hole of the aluminum cover and the rubber plug in turn, the syringe is connected to the inside of the soft bag, and the medicine liquid can be added or extracted.

[0004] When the drug solution is relatively thick, if the needle is directly passed through the rubber stopper, the aperture of the through hole inside the needle is small, the fluidity of the drug solution is poor, and the drug solution is not easily added to or extracted from the soft bag through the needle, which is inefficient; if the aluminum cap and the rubber stopper are pulled out, the needle is removed from the syringe, and the nipple of the syringe is directly aligned with the connector to add and extract the drug solution, the sealing between the nipple of the syringe and the connector is poor, and there is a possibility of drug leakage. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a soft bag medicine plug.

[0006] The soft bag medicine plug provided in this application adopts the following technical solution:

[0007] A soft bag medicine plug comprises a connector, wherein the connector comprises a first flow tube and a second flow tube which are internally connected, wherein the first flow tube is inserted into a conduit of the soft bag, and the second flow tube is connected to a nipple of a syringe;

[0008] A protective ring is provided on the outer peripheral wall of the second flow tube, and there is a containing space between the protective ring and the second flow tube;

[0009] The end of the second circulation tube away from the first circulation tube is provided with a rubber plug, and the rubber plug is used to seal the end of the connector away from the soft bag;

[0010] A connecting ring is threadedly connected to the end of the second circulation tube away from the first circulation tube. The connecting ring is fixedly connected to the end of the syringe barrel provided with a nipple. The connecting ring is coaxially arranged on the outside of the nipple. The distance between the connecting ring and the nipple is the thickness of the second circulation tube. The nipple is inserted in the second circulation tube. The distance between the outer circumferential wall of the second circulation tube and the inner circumferential wall of the protective ring close to the end of the syringe is consistent with the thickness of the connecting ring.

[0011] By adopting the above technical solution, when it is necessary to add or extract liquid medicine, the rubber stopper is pulled out, the nipple of the syringe is inserted into the second circulation tube, the syringe is rotated until the connecting ring is threadedly connected to the second circulation tube, and then the first circulation tube connected to the medicine stopper of the syringe is inserted into the catheter of the soft bag, that is, the syringe and the soft bag are connected. Since the distance between the outer peripheral wall of the second circulation tube and the inner peripheral wall of the protective ring close to one end of the syringe is consistent with the thickness of the connecting ring, a good sealing environment can be achieved when the nipple of the syringe is directly aligned with the medicine stopper to avoid the possibility of leakage of the medicine. At this time, since no needle is used, the medicine flows through the nipple with a larger diameter, and even thick medicine can flow smoothly.

[0012] Preferably, the protective ring includes an inclined section and a vertical section, one end of the inclined section is fixedly connected to an end of the second flow tube close to the first flow tube, the other end of the inclined section is fixedly connected to the vertical section, and the inclined section is arranged to expand outward from a direction close to the first flow tube to a direction away from the first flow tube toward a direction away from the second flow tube.

[0013] Preferably, the rubber plug comprises a blocking portion and a limiting portion, the blocking portion is annular and is sandwiched between the second flow tube and the protective ring, the outer peripheral wall of the blocking portion is interference fit with the inner peripheral wall of the vertical section of the protective ring, the limiting portion is integrally formed on the top surface of the blocking portion, the outer peripheral wall of the top end of the vertical section of the protective ring is provided with a supporting ring edge, the outer peripheral wall of the limiting portion is flush with the outer peripheral wall of the supporting ring edge, and the bottom surface of the limiting portion is in contact with the top surface of the supporting ring edge;

[0014] The inner wall of the connecting ring is threadedly connected to the outer wall of the second flow pipe, and the outer wall of the connecting ring is in contact with the inner wall of the supporting ring edge.

[0015] Preferably, the outside of the rubber plug is connected to an aluminum cover, the inner top wall of the aluminum cover is connected to the top surface of the limiting portion, the inner peripheral wall of the aluminum cover is connected to the outer peripheral wall of the limiting portion, the length of the peripheral side wall of the aluminum cover is greater than the sum of the length of the limiting portion and the length of the supporting ring edge, and a through hole is opened in the center of the aluminum cover for the needle of the syringe to pass through.

[0016] By adopting the above technical solution, after the aluminum cover is placed on the protective ring, the sealing part of the rubber plug is inserted into the accommodating space, the limiting part and the supporting ring edge are interference fit, and the sealing part and the peripheral side wall of the aluminum cover clamp the supporting ring edge, thereby tightly sealing the medicine plug and preventing dust and impurities in the air from entering the second circulation tube.

[0017] Preferably, the inner circumferential wall of the rubber plug sealing portion abuts against the outer circumferential wall of the second flow tube, the outer circumferential wall of the rubber plug sealing portion abuts against the inner circumferential wall of the vertical section of the protective ring, and the inner top wall of the rubber plug limiting portion is in close contact with a side of the second flow tube away from the first flow tube.

[0018] By adopting the above technical solution, the sealing performance between the rubber plug and the second flow tube is improved.

[0019] Preferably, the inner peripheral wall of the second flow tube at one end away from the first flow tube is arranged to expand outwardly in a direction from close to the first flow tube to away from the first flow tube.

[0020] By adopting the above technical solution, it is convenient for the nipple of the syringe to be inserted into the second circulation tube.

[0021] Preferably, the outer peripheral wall of the first flow tube at one end away from the second flow tube is arranged to be inwardly contracted along a direction from close to the second flow tube to away from the second flow tube.

[0022] By adopting the above technical solution, it is convenient to insert the first circulation tube into the catheter of the soft bag.

[0023] Preferably, the outer peripheral wall of the rubber plug sealing portion at one end away from the limiting portion is arranged to be inwardly contracted along a direction from close to the limiting portion to away from the limiting portion.

[0024] By adopting the above technical solution, the rubber plug can be easily inserted into the accommodating space.

[0025] In summary, this application includes the following beneficial technical effects:

[0026] When it is necessary to add or extract liquid medicine, pull out the rubber stopper, insert the nipple of the syringe into the second circulation tube, rotate the syringe until the connecting ring is threadedly connected to the second circulation tube, and then insert the first circulation tube connected to the medicine stopper of the syringe into the catheter of the soft bag, so that the syringe and the soft bag are connected. Since the distance between the outer peripheral wall of the second circulation tube and the inner peripheral wall of the protective ring close to one end of the syringe is consistent with the thickness of the connecting ring, a good sealing environment can be achieved when the nipple of the syringe is directly aligned with the medicine stopper to avoid the possibility of leakage of the medicine. At this time, since no needle is used, the medicine flows through the nipple with a larger diameter, and even thick medicine can flow smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the overall structure of a soft bag medicine plug in an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure used to display the medicine plug in the embodiment of the present application.

[0029] Figure 3 It is a schematic cross-sectional structure diagram used to demonstrate the use of the medicine plug in conjunction with the catheter and the nipple in the embodiment of the present application.

[0030] Explanation of the reference numerals: 1. Connector; 11. First flow tube; 12. Second flow tube; 13. Protective ring; 131. Inclined section; 132. Vertical section; 133. Support ring edge; 2. Rubber plug; 21. Sealing portion; 22. Limiting portion; 3. Aluminum cover; 31. Through hole; 4. Catheter; 5. Nipple; 6. Connecting ring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a soft bag medicine plug.

[0033] Reference Figure 1-3 The soft bag medicine plug includes a connector 1, which includes a first flow tube 11 and a second flow tube 12 that are internally connected. The first flow tube 11 is inserted into the catheter 4 of the soft bag, and the second flow tube 12 is connected to the nipple 5 of the syringe.

[0034] A protective ring 13 is provided on the outer peripheral wall of the second flow tube 12, and there is an accommodation space between the protective ring 13 and the second flow tube 12. The protective ring 13 includes an inclined section 131 and a vertical section 132, one end of the inclined section 131 is fixedly connected to an end of the second flow tube 12 close to the first flow tube 11, and the other end of the inclined section 131 is fixedly connected to the vertical section 132, and the inclined section 131 is arranged to expand outward from the direction close to the first flow tube 11 to the direction away from the first flow tube 11 toward the direction away from the second flow tube 12.

[0035] The end of the second circulation tube 12 away from the first circulation tube 11 is provided with a rubber plug 2, and the rubber plug 2 is used to seal the end of the connector 1 away from the soft bag. The rubber plug 2 includes a sealing portion 21 and a limiting portion 22. The sealing portion 21 is annular and is sandwiched between the second circulation tube 12 and the protective ring 13. The outer peripheral wall of the sealing portion 21 is interference-fitted with the inner peripheral wall of the vertical section 132 of the protective ring 13. The limiting portion 22 is integrally formed on the top surface of the sealing portion 21. The outer peripheral wall of the top of the vertical section 132 of the protective ring 13 is provided with a supporting ring edge 133. The outer peripheral wall of the limiting portion 22 is flush with the outer peripheral wall of the supporting ring edge 133, and the bottom surface of the limiting portion 22 is in contact with the top surface of the supporting ring edge 133.

[0036] The outside of the rubber plug 2 is connected with an aluminum cover 3, the inner top wall of the aluminum cover 3 is connected to the top surface of the limiting portion 22, the inner peripheral wall of the aluminum cover 3 is connected to the outer peripheral wall of the limiting portion 22, and the length of the peripheral side wall of the aluminum cover 3 is greater than the sum of the length of the limiting portion 22 and the length of the supporting ring edge 133. After the aluminum cover 3 is placed on the protective ring 13, the sealing portion 21 of the rubber plug 2 is inserted into the accommodating space, the limiting portion 22 and the supporting ring edge 133 are interference fit, and the sealing portion 21 and the peripheral side wall of the aluminum cover 3 clamp the supporting ring edge 133, thereby tightly sealing the medicine plug to prevent dust and impurities in the air from entering the second flow tube 12.

[0037] A through hole 31 is provided in the center of the aluminum cover 3 for the needle of the syringe to pass through. When the viscosity of the liquid medicine is not high, the needle can be inserted into the nipple 5, and the liquid medicine can be added and extracted after the needle passes through the through hole 31 of the aluminum cover 3 and the rubber plug 2.

[0038] The inner circumferential wall of the sealing portion 21 of the rubber plug 2 abuts against the outer circumferential wall of the second flow tube 12, the outer circumferential wall of the sealing portion 21 of the rubber plug 2 abuts against the inner circumferential wall of the vertical section 132 of the protective ring 13, and the inner top wall of the limiting portion 22 of the rubber plug 2 is tightly attached to the side of the second flow tube 12 away from the first flow tube 11, thereby improving the sealing between the rubber plug 2 and the second flow tube 12.

[0039] A connecting ring 6 is threadedly connected to one end of the second circulation tube 12 away from the first circulation tube 11. The connecting ring 6 is fixedly connected to one end of the syringe barrel provided with a nipple 5. The connecting ring 6 is coaxially arranged on the outside of the nipple 5. The distance between the connecting ring 6 and the nipple 5 is the thickness of the second circulation tube 12. The nipple 5 is inserted into the second circulation tube 12. The outer peripheral wall of the nipple 5 fits with the inner peripheral wall of the second circulation tube 12. The distance between the outer peripheral wall of the second circulation tube 12 and the inner peripheral wall of the protective ring 13 close to one end of the syringe is consistent with the thickness of the connecting ring 6. The inner wall of the connecting ring 6 is threadedly connected to the outer wall of the second circulation tube 12, and the outer wall of the connecting ring 6 fits with the inner wall of the support ring edge 133.

[0040] When it is necessary to add or extract liquid medicine, pull out the rubber plug 2, insert the nipple 5 of the syringe into the second circulation tube 12, rotate the syringe until the connecting ring 6 is threadedly connected to the second circulation tube 12, and then insert the first circulation tube 11 connected to the medicine plug of the syringe into the catheter 4 of the soft bag, so that the syringe and the soft bag are connected. Since the distance between the outer peripheral wall of the second circulation tube 12 and the inner peripheral wall of the protective ring 13 close to one end of the syringe is consistent with the thickness of the connecting ring 6, a good sealing environment can be achieved when the nipple 5 of the syringe is directly aligned with the medicine plug to avoid the possibility of leakage of the medicine. At this time, since no needle is used, the medicine flows through the nipple 5 with a larger caliber, and even thick medicine can flow smoothly.

[0041] The inner peripheral wall of the second flow tube 12 at one end away from the first flow tube 11 is expanded outward from the direction close to the first flow tube 11 to the direction away from the first flow tube 11 , so as to facilitate the nipple 5 of the syringe to be inserted into the second flow tube 12 .

[0042] The outer peripheral wall of one end of the first circulation tube 11 away from the second circulation tube 12 is inwardly contracted from close to the second circulation tube 12 to away from the second circulation tube 12, so as to facilitate the insertion of the first circulation tube 11 into the conduit 4 of the soft bag.

[0043] The outer peripheral wall of the sealing portion 21 of the rubber plug 2 away from the limiting portion 22 is inwardly contracted along the direction from close to the limiting portion 22 to away from the limiting portion 22, so as to facilitate the insertion of the rubber plug 2 into the accommodating space.

[0044] The implementation principle of a soft bag medicine plug in the embodiment of the present application is:

[0045] When it is necessary to add or extract liquid medicine, pull out the rubber plug 2, insert the nipple 5 of the syringe into the second circulation tube 12, rotate the syringe until the connecting ring 6 is threadedly connected to the second circulation tube 12, and then insert the first circulation tube 11 connected to the medicine plug of the syringe into the catheter 4 of the soft bag, so that the syringe and the soft bag are connected. Since the distance between the outer peripheral wall of the second circulation tube 12 and the inner peripheral wall of the protective ring 13 close to one end of the syringe is consistent with the thickness of the connecting ring 6, a good sealing environment can be achieved when the nipple 5 of the syringe is directly aligned with the medicine plug to avoid the possibility of leakage of the medicine. At this time, since no needle is used, the medicine flows through the nipple 5 with a larger caliber, and even thick medicine can flow smoothly.

[0046] When the viscosity of the liquid medicine is not high, the needle can be inserted into the nipple 5, and the liquid medicine can be added or extracted after the needle passes through the through hole 31 of the aluminum cover 3 and the rubber plug 2.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A soft bag medicine plug, characterized in that: The invention comprises a connector (1), wherein the connector (1) comprises a first flow tube (11) and a second flow tube (12) which are internally connected, wherein the first flow tube (11) is inserted into a conduit (4) of a soft bag, and the second flow tube (12) is connected to a nipple (5) of a syringe; A protective ring (13) is provided on the outer peripheral wall of the second flow tube (12), and a containing space exists between the protective ring (13) and the second flow tube (12); A rubber plug (2) is provided at one end of the second circulation tube (12) away from the first circulation tube (11), and the rubber plug (2) is used to seal the end of the connector (1) away from the soft bag; A connecting ring (6) is threadedly connected to one end of the second flow tube (12) away from the first flow tube (11); the connecting ring (6) is fixedly connected to one end of the syringe barrel provided with a nipple (5); the connecting ring (6) is coaxially arranged on the outside of the nipple (5); the distance between the connecting ring (6) and the nipple (5) is the thickness of the second flow tube (12); the nipple (5) is inserted into the second flow tube (12); the distance between the outer peripheral wall of the second flow tube (12) and the inner peripheral wall of the protective ring (13) close to one end of the syringe is consistent with the thickness of the connecting ring (6).

2. The soft bag medicine plug according to claim 1, characterized in that: The protective ring (13) comprises an inclined section (131) and a vertical section (132); one end of the inclined section (131) is fixedly connected to an end of the second flow tube (12) close to the first flow tube (11); the other end of the inclined section (131) is fixedly connected to the vertical section (132); the inclined section (131) is arranged to expand outward from a direction close to the first flow tube (11) to a direction away from the first flow tube (11) and toward a direction away from the second flow tube (12).

3. The soft bag medicine plug according to claim 2, characterized in that: The rubber plug (2) comprises a blocking portion (21) and a limiting portion (22); the blocking portion (21) is annular and is sandwiched between the second flow tube (12) and the protective ring (13); the outer peripheral wall of the blocking portion (21) is interference-fitted with the inner peripheral wall of the vertical section (132) of the protective ring (13); the limiting portion (22) is integrally formed on the top surface of the blocking portion (21); the outer peripheral wall of the top end of the vertical section (132) of the protective ring (13) is provided with a supporting ring edge (133); the outer peripheral wall of the limiting portion (22) is flush with the outer peripheral wall of the supporting ring edge (133); and the bottom surface of the limiting portion (22) is in contact with the top surface of the supporting ring edge (133); The inner wall of the connecting ring (6) is threadedly connected to the outer wall of the second flow pipe (12), and the outer wall of the connecting ring (6) is in contact with the inner wall of the supporting ring edge (133).

4. The soft bag medicine plug according to claim 3, characterized in that: The outside of the rubber plug (2) is connected to an aluminum cover (3), the inner top wall of the aluminum cover (3) is connected to the top surface of the limiting portion (22), the inner peripheral wall of the aluminum cover (3) is connected to the outer peripheral wall of the limiting portion (22), the length of the peripheral side wall of the aluminum cover (3) is greater than the sum of the length of the limiting portion (22) and the length of the supporting ring edge (133), and a through hole (31) is opened in the center of the aluminum cover (3), and the through hole (31) is for the needle of the syringe to pass through.

5. The soft bag medicine plug according to claim 3, characterized in that: The inner peripheral wall of the sealing portion (21) of the rubber plug (2) abuts against the outer peripheral wall of the second circulation tube (12), the outer peripheral wall of the sealing portion (21) of the rubber plug (2) abuts against the inner peripheral wall of the vertical section (132) of the protective ring (13), and the inner top wall of the limiting portion (22) of the rubber plug (2) is in close contact with a side of the second circulation tube (12) away from the first circulation tube (11).

6. The soft bag medicine plug according to claim 1, characterized in that: The inner peripheral wall of the second flow tube (12) at one end away from the first flow tube (11) is arranged to expand outwards in a direction from close to the first flow tube (11) to away from the first flow tube (11).

7. The soft bag medicine plug according to claim 1, characterized in that: The outer peripheral wall of the first flow tube (11) at one end away from the second flow tube (12) is arranged to be inwardly contracted along a direction from approaching the second flow tube (12) to away from the second flow tube (12).

8. The soft bag medicine plug according to claim 3, characterized in that: The outer peripheral wall of the sealing portion (21) of the rubber plug (2) at one end away from the limiting portion (22) is arranged to be retracted inwardly along a direction from close to the limiting portion (22) to away from the limiting portion (22).

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