Medicine adding assembly and infusion device comprising same

Abstract

The utility model provides a medicine adding assembly and an infusion device comprising the same. The medicine adding assembly is connected to the end of the catheter and comprises a sealing piece, a medicine adding pipe, a fixing base and an annular fixing structure, one end of the medicine adding pipe is clamped in the catheter, the other end of the medicine adding pipe is connected with the fixing base, the fixing base is located outside the end of the catheter, and the diameter of the fixing base is larger than that of the medicine adding pipe. The medicine adding assembly further comprises an annular fixing structure, the annular fixing structure is provided with a first hole channel and a second hole channel which are communicated, the first hole channel is arranged on the outer side of the end of the catheter in a sleeving mode, and the inner diameter of the first hole channel is smaller than the outer diameter of the fixing base. The second hole channel is arranged on the outer side of the fixing base in a sleeving mode, and the length of the second hole channel in the axial direction of the medicine adding pipe is larger than that of the fixing base in the axial direction of the medicine adding pipe. The annular fixing structure is used for avoiding the situation that the medicine adding pipe and the fixing base are difficult to hold due to the too small size and protecting the fixing base from being polluted before and after medicine adding.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument field, especially a kind of dosing subassembly and infusion device comprising it. BACKGROUND

[0002] In prior art, infusion device includes infusion bag, one outlet of infusion bag is connected to infusion tube, another outlet is connected to one end of catheter, and the other end of catheter is provided with dosing subassembly. When it is necessary to supplement medicine, medical staff inserts the needle of syringe into dosing subassembly, and pushes medicine into infusion bag through catheter, and then pulls out syringe after adding medicine.

[0003] However, in actual use, the following problems occur: the volume of dosing member is too small, which makes it difficult for medical staff to hold, and the outside end of dosing member is easily contaminated; further, dosing member is easily repeatedly used unconsciously, and the needle of syringe may be inserted into the part of dosing member too close to the side wall during dosing, which may cause injury, etc. SUMMARY

[0004] The utility model solves the technical problem that the dosing member is difficult to hold and the outside end is easily contaminated in prior art, and provides a dosing subassembly and infusion device comprising the same.

[0005] The utility model solves the above technical problem by the following technical scheme:

[0006] A dosing subassembly is connected to the end of catheter, and the dosing subassembly comprises a sealing member, a dosing tube, a fixing seat and an annular fixing structure, one end of the dosing tube is clamped in the inside of the catheter, the other end of the dosing tube is connected to the fixing seat, the fixing seat is located outside the end of the catheter, the diameter of the fixing seat is greater than the diameter of the dosing tube, and the sealing member is clamped in the fixing seat:

[0007] The annular fixing structure has a first hole and a second hole in communication, the first hole is sleeved on the outside of the end of the catheter, and the inner diameter of the first hole is smaller than the outer diameter of the fixing seat;

[0008] The second hole is sleeved on the outside of the fixing seat, and the length of the second hole along the axial direction of the dosing tube is greater than the length of the fixing seat along the axial direction of the dosing tube.

[0009] In the technical scheme, the annular fixing structure is used to increase the overall volume of the dosing subassembly, so as to avoid the difficulty in holding due to the small volume of the dosing tube and the fixing seat; at the same time, the annular fixing structure is annularly arranged on the outside of the fixing seat through the first hole and the second hole, so as to form protection and avoid the contamination of the fixing seat before and after dosing, which affects the quality of the medicine in the catheter.

[0010] Preferably, the medicine adding assembly further comprises a first protection structure, which is used for closing the second hole.

[0011] In the technical solution, the second hole and the fixing seat can be further prevented from being polluted before and after medicine adding.

[0012] Preferably, the first protection structure comprises a rod-shaped part and a ring-shaped part, both of which are hollow, and the diameter of the rod-shaped part is smaller than that of the ring-shaped part.

[0013] One side of the ring-shaped part is clamped in the second hole.

[0014] The other side of the rod-shaped part is connected to the other side of the ring-shaped part, and the rod-shaped part is arranged at the middle part of the ring-shaped part, and the other end of the rod-shaped part is sealed.

[0015] In the technical solution, before the needle is inserted into the first protection structure, the connecting part of the rod-shaped part and the ring-shaped part is broken, and the needle is inserted into the hole formed after the breaking, so that the needle is guided when being inserted into the first protection structure, and is more accurately inserted into the fixing seat, the possibility of deviation is reduced, the needle is effectively prevented from being obliquely inserted into the catheter, and the change before and after the breaking is obvious, so that the medicine adding assembly can be prevented from being repeatedly used.

[0016] Preferably, the connecting part of the rod-shaped part and the ring-shaped part is provided with a notch.

[0017] In the technical solution, the connecting part of the rod-shaped part and the ring-shaped part can be broken along the notch.

[0018] Preferably, the notch is a ring-shaped groove arranged along the outer periphery of the rod-shaped part; and / or,

[0019] The notch is a plurality of grooves arranged at intervals along the outer periphery of the rod-shaped part.

[0020] In the technical solution, the connecting part of the rod-shaped part and the ring-shaped part can be completely broken along the notch.

[0021] Preferably, one side of the ring-shaped part is clamped between the inner wall of the second hole and the outer wall of the fixing seat.

[0022] In the technical solution, the ring-shaped part can be further fixed.

[0023] Preferably, the medicine adding assembly further comprises a second protection structure, which is used for closing the second hole.

[0024] One end of the second protection structure is rotatably connected to the annular fixing structure, and the second protection structure can be rotated to a position clamped on the inner wall of the second hole.

[0025] In the technical solution, the second protection structure can protect the second hole and the fixing seat from being polluted after the medicine is injected.

[0026] Preferably, the inner wall of the second hole is uniformly provided with a plurality of protrusions corresponding to the position of the second protection structure.

[0027] In the technical solution, the stability of the second protection structure when clamped on the second hole can be improved.

[0028] Preferably, along the axial direction of the medicine adding pipe, and from one end of the fixing seat to the end far away from the fixing seat, the diameter of the medicine adding pipe gradually decreases; and / or,

[0029] The medicine adding pipe and the fixing seat are integrally formed.

[0030] In the technical solution, the diameter of the medicine adding pipe gradually decreases, so that the end of the medicine adding pipe is less likely to scratch the inner wall of the catheter when the catheter is bent, and the needle can be better guided. The medicine adding pipe and the fixing seat are integrally formed, so that the stability of the fixing seat is improved, and the connection between the medicine adding pipe and the fixing seat is less likely to fall off to expose the end of the catheter.

[0031] A transfusion device comprises the medicine adding assembly.

[0032] In the technical solution, the transfusion device can prevent the medicine inside the transfusion device from being polluted.

[0033] The positive progress effect of the utility model lies in:

[0034] The annular fixing structure is used to increase the overall size of the medicine adding assembly, so that the medicine adding pipe and the fixing seat are less likely to be too small to be held. Meanwhile, the annular fixing structure is arranged outside the fixing seat through the first hole and the second hole, so that the fixing seat is protected from being polluted before and after the medicine is added, and the quality of the medicine inside the catheter is affected. The transfusion device can prevent the medicine inside the transfusion device from being polluted. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is an exploded structural schematic view of the medicine adding assembly of one embodiment of the utility model.

[0036] Figure 2 It is an exploded structural schematic view of the medicine adding assembly of one embodiment of the utility model in use.

[0037] Figure 3 It is the stereogram structure schematic view of the use state of the dosing assembly of one embodiment of the utility model.

[0038] Figure 4 It is another direction's stereogram structure schematic view of the use state of the dosing assembly of one embodiment of the utility model.

[0039] Figure 5 It is the cross section structure schematic view of the use state of the dosing assembly of one embodiment of the utility model.

[0040] Figure 6 It is the step diagram of the dosing method of one embodiment of the utility model.

[0041] Explanation of reference signs:

[0042] Dosing assembly 1

[0043] Dosing pipe 11

[0044] Fixed seat 12

[0045] Annular fixed structure 13

[0046] First hole channel 131

[0047] Second hole channel 132

[0048] Convex part 133

[0049] First protection structure 14

[0050] Rod-shaped part 141

[0051] Annular part 142

[0052] Annular notch 143

[0053] Second protection structure 15

[0054] Sealing piece 16

[0055] Catheter 2 Specific implementation

[0056] The utility model will be explained more clearly and completely by a preferred embodiment and in combination with the drawings.

[0057] As Figures 1-5 shown, the embodiment provides a dosing assembly 1, which is connected to the end of a catheter 2, and the dosing assembly 1 comprises a sealing piece 16, a dosing pipe 11, a fixed seat 12 and an annular fixed structure 13, one end of the dosing pipe 11 is clamped in the inside of the catheter 2, the other end of the dosing pipe 11 is connected with the fixed seat 12, the fixed seat 12 is located outside the end of the catheter 2, the diameter of the fixed seat 12 is greater than the diameter of the dosing pipe 11, and the sealing piece 16 is clamped in the fixed seat 12.

[0058] The annular fixing structure 13 has a first hole 131 and a second hole 132 in communication, the first hole 131 is sleeved outside the end of the catheter 2, and the inner diameter of the first hole 131 is smaller than the outer diameter of the fixing seat 12.

[0059] The second hole 132 is sleeved outside the fixing seat 12, and the length of the second hole 132 along the axial direction A of the medicine adding pipe 11 is greater than the length of the fixing seat 12 along the axial direction A of the medicine adding pipe 11.

[0060] In this way, since the annular fixing structure 13 is used to increase the overall volume of the medicine adding assembly 1, it can be avoided that the medicine adding pipe 11 and the fixing seat 12 are too small in volume to be held; meanwhile, the annular fixing structure 13 is annularly arranged outside the fixing seat 12 through the first hole 131 and the second hole 132, so as to form protection and avoid the fixing seat 12 from being polluted before and after adding medicine, thereby affecting the quality of the medicine in the catheter 2.

[0061] In the embodiment, the medicine adding assembly 1 further comprises a first protection structure 14, and the first protection structure 14 is used to close the second hole 132. In this way, it can be further avoided that the second hole 132 and the fixing seat 12 are polluted before and after adding medicine.

[0062] In the embodiment, the first protection structure 14 comprises a rod-shaped part 141 and an annular part 142, both of which are hollow, the diameter of the rod-shaped part 141 is smaller than the diameter of the annular part 142, one side of the annular part 142 is clamped in the second hole 132, one side of the rod-shaped part 141 is connected to the other side of the annular part 142, the rod-shaped part 141 is arranged corresponding to the middle part of the annular part 142, and the other end of the rod-shaped part 141 is sealed. In this way, the connecting part of the rod-shaped part 141 and the annular part 142 is broken before the needle is inserted into the first protection structure 14, and the needle is inserted into the hole formed after the breakage, so that the needle is guided when being inserted into the first protection structure 14, and is more accurately inserted into the fixing seat 12, the possibility of deviation is reduced, the needle is effectively prevented from being obliquely inserted into the catheter 2, and meanwhile, the change before and after the breakage is obvious, so that the medicine adding assembly 1 can be avoided from being repeatedly used.

[0063] In the embodiment, the connecting part of the rod-shaped part 141 and the annular part 142 is provided with a notch 143. In this way, the connecting part of the rod-shaped part 141 and the annular part 142 can be broken along the notch 143.

[0064] In the embodiment, the notch 143 is an annular groove, and is arranged along the outer periphery of the rod-shaped part 141. In this way, the connecting part of the rod-shaped part 141 and the annular part 142 can be further completely broken along the notch 143. Of course, in other embodiments, the notch is provided as a plurality of grooves arranged along the outer periphery of the rod-shaped part, and similar effects can also be achieved.

[0065] In this embodiment, one side of the annular portion 142 is engaged between the inner wall of the second channel 132 and the outer wall of the fixing seat 12. This further secures the annular portion 142.

[0066] In this embodiment, the dosing assembly 1 further includes a second protective structure 15, which is used to seal the second channel 132. One end of the second protective structure 15 is rotatably connected to the annular fixing structure 13, and the second protective structure 15 can be rotated to a position where it is engaged with the inner wall of the second channel 132. In this way, the second protective structure 15 can protect the second channel 132 and the fixing seat 12 from contamination after dosing.

[0067] In this embodiment, four protrusions 133 are evenly distributed circumferentially on the inner wall of the second channel 132 corresponding to the position of the second protective structure 15. This increases the stability of the second protective structure 15 when it is engaged in the second channel 132. Of course, in other embodiments, the number and structure of the protrusions can be customized according to the shape of the second protective structure.

[0068] In this embodiment, along the axial direction A of the dosing tube 11, and from one end connected to the fixing seat 12 to the end away from the fixing seat 12, the diameter of the dosing tube 11 gradually decreases. This reduces the possibility of the end of the dosing tube 11 scratching the inner wall of the catheter 2 when the catheter 2 bends, and at the same time better guides the needle.

[0069] In this embodiment, the dosing tube 11 and the fixing seat 12 are integrally formed (similar to the structure of commercially available dosing components), which can improve the stability of the fixing seat 12 and prevent the connection between the dosing tube 11 and the fixing seat 12 from falling off, thus exposing the end of the catheter 2.

[0070] This embodiment also provides an infusion device, which includes the drug delivery component 1 as described above. This prevents contamination of the medication inside the infusion device.

[0071] like Figure 6 As shown, this embodiment also provides a dosing method, which uses the dosing component 1 as described above. The steps of the dosing method include:

[0072] S1. When manufacturing the infusion device, the drug delivery component 1 is pre-installed on the end of the catheter 2;

[0073] S2. When medication is needed, break the connection between the rod-shaped part 141 and the ring-shaped part 142 along the notch 143;

[0074] S3. Insert the needle into the hole formed after the break, until it penetrates the seal 16, and then insert it into the dosing tube to inject the drug.

[0075] S4. After the injection is completed, remove the needle and insert the second protective structure 15 into the second channel 132.

[0076] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A drug delivery assembly connected to the end of a catheter, characterized in that, The medicine adding assembly comprises a sealing member, a medicine adding tube, a fixing base and a ring-shaped fixing structure. One end of the medicine adding tube is clamped in the inside of the catheter, and the other end of the medicine adding tube is connected with the fixing base. The fixing base is located outside the end of the catheter, and the diameter of the fixing base is larger than the diameter of the medicine adding tube. The sealing member is clamped in the fixing base. The ring-shaped fixing structure has a first hole and a second hole in communication. The first hole is sleeved outside the end of the catheter, and the inner diameter of the first hole is smaller than the outer diameter of the fixing base. The second hole is sleeved outside the fixing base, and the length of the second hole along the axial direction of the medicine adding tube is larger than the length of the fixing base along the axial direction of the medicine adding tube.

2. The medicated assembly of claim 1, wherein, The medicine adding assembly further comprises a first protection structure for closing the second hole.

3. The medicated assembly of claim 2, wherein, The first protection structure comprises a rod-shaped part and a ring-shaped part, both of which are hollow. The diameter of the rod-shaped part is smaller than the diameter of the ring-shaped part. One side of the ring-shaped part is clamped in the second hole. One side of the rod-shaped part is connected to the other side of the ring-shaped part, and the rod-shaped part is arranged at the middle part of the ring-shaped part. The other end of the rod-shaped part is sealed.

4. The medicated assembly of claim 3, wherein, The connection part of the rod-shaped part and the ring-shaped part is provided with an indentation.

5. The medicated assembly of claim 4, wherein, The indentation is a ring-shaped groove arranged along the outer periphery of the rod-shaped part; and / or The indentation is a plurality of grooves arranged along the outer periphery of the rod-shaped part at intervals.

6. The medicated assembly of claim 3, wherein, One side of the ring-shaped part is clamped between the inner wall of the second hole and the outer wall of the fixing base.

7. The medicated assembly of claim 1, wherein, The medicine adding assembly further comprises a second protection structure for closing the second hole. One end of the second protection structure is rotatably connected to the ring-shaped fixing structure, and the second protection structure can be rotated to be clamped to the inner wall of the second hole.

8. The medicated assembly of claim 7, wherein, The inner wall of the second hole is uniformly distributed with a plurality of convex parts corresponding to the position of the second protection structure.

9. The medicated assembly of claim 1, wherein, Along the axial direction of the medicine adding tube, and from one end of the fixing base to the other end of the fixing base, the diameter of the medicine adding tube gradually decreases; and / or The medicine adding tube and the fixing base are integrally formed.

10. An infusion device, characterized by The medicine adding assembly comprises a catheter and the medicine adding assembly according to any one of claims 1-9.

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