CN219127629U

CN219127629U - Dry powder bag connector and dry powder bag

Info

Publication number: CN219127629U
Application number: CN202222617621.7U
Authority: CN
Inventors: 唐友洪; 匡卫文; 杨正根; 莫永强; 陈志豪; 陈校园
Original assignee: Guangzhou Kangsheng Biotechnology Co ltd
Current assignee: Guangzhou Kangsheng Biotechnology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-06-06
Anticipated expiration: 2032-09-29

Abstract

The utility model belongs to the technical field of dry powder bags, and provides a dry powder bag connector and a dry powder bag. The structure of utilizing the filtration pore prevents external impurity's entering, has avoided adopting filter core or filter disc the filter media can exist the risk of falling powder.

Description

Dry powder bag connector and dry powder bag

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a dry powder bag connector and a dry powder bag.

Background

Hemodialysis is one of the modes of kidney replacement therapy for patients with acute and chronic renal failure, and is to drain in-vivo blood to the outside of the body, exchange the blood with electrolyte solution with similar concentration in the body in a dialyzer, remove in-vivo metabolic waste, and maintain the balance of electrolyte and acid and alkali. Among them, dialysate is an important component of hemodialysis, and bicarbonate dialysate is now widely used. In order to reduce the packaging and transportation cost and save the storage space, most of the dialysis dry powder is clinically used, and when in use, the dialysis dry powder is dissolved into concentrated solution by dialysis water and then mixed according to a certain proportion for clinical application.

The dialysis powder needs to be prepared at present when in use, the burden of medical staff is increased, and the preparation environment and equipment need to reach a certain clean level, so that the online use of the B dry powder is firstly realized abroad. The on-line B dry powder is pre-assembled in the B dry powder bag and is connected with different hemodialysis machines through a structure provided with a connector, so that the direct on-line use of the hemodialysis dry powder is realized. The existing online B dry powder bag connector is used for preventing external impurities from entering a dialysis bag, meanwhile, powder is prevented from flowing backward or entering a dialysis machine, a filtering program is needed to be added to a water inlet hole and a water outlet hole of the connector respectively, for example, a water inlet filter element or a filter disc is added to a water inlet, however, the water inlet filter element or the filter disc and the water inlet are of relatively independent structures, the process flow is increased due to the structure of the filter element or the filter disc, and the filter element is formed by sintering polyolefin powder, so that the risk of powder falling exists.

Disclosure of Invention

In order to overcome the above drawbacks of the prior art, the present utility model is directed to a dry powder bag connector, which can solve the above problems of the prior art.

The technical scheme adopted for solving the technical problems is as follows:

a dry powder bag connector comprising:

the connector comprises a connector body, wherein the connector body is provided with a first liquid inlet part, a second liquid inlet part, a first liquid outlet part, a second liquid outlet part and a connecting part;

the first liquid inlet part and the first liquid outlet part are arranged on two sides of the connecting part, and the second liquid inlet part and the second liquid outlet part are arranged on the connecting part in a penetrating way;

the second liquid inlet part comprises a liquid inlet channel penetrating through the connecting part, the liquid inlet channel is provided with a filtering part, the filtering part is provided with a plurality of filtering holes, and the inner diameter size of the filtering holes gradually increases along the direction towards the connecting part.

Preferably, the filtering holes are in a strip slit structure, and the filtering holes are circumferentially arranged along the center of the filtering part.

Preferably, the filter holes are distributed annularly, radially or in parallel along the center of the filter part.

Preferably, the cross-section of the filter hole is trapezoidal, the width of the large end of the filter hole is 0.55mm to 0.65mm, and the width of the small end of the filter hole is 0.15mm to 0.25mm.

Preferably, the end face of the connector body, which is far away from the connecting part, is provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is communicated with the first liquid inlet part and the second liquid inlet part, the first liquid inlet part, the second liquid inlet part and the liquid inlet groove form a liquid inlet channel, the liquid outlet groove is communicated with the first liquid outlet part and the second liquid outlet part, and the first liquid outlet part, the second liquid outlet part and the liquid outlet groove form a liquid outlet channel.

Preferably, the end face of the connector body, which is far away from the connecting part, is provided with a convex upper seal welding part, and the upper seal welding part is arranged along the outer edge ends of the liquid inlet channel and the liquid outlet channel in a surrounding manner.

Preferably, the surface of the connecting part is provided with a plurality of convex neck seal welding parts, and the adjacent neck seal welding parts are arranged in parallel.

Preferably, the cross section of the connecting part is of a duckbill structure with a circular middle part and narrowed two ends.

Preferably, the filtering part and the liquid inlet channel are integrally formed.

The utility model also discloses a dry powder bag which comprises a bag body, wherein the dry powder bag connector is arranged on the bag body.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model aims at the problems that the filter element or the filter disc is additionally arranged in the traditional structure, and the risk of powder falling exists in the filter material with the structure, the filter part and the liquid inlet channel are integrally formed, and the filter part and the liquid inlet channel can be integrally formed when the connector body is subjected to injection molding, so that the filter element or the filter disc does not need to be additionally arranged in the traditional process flow, the production process is simplified, and the production cost is reduced. The structure of utilizing the filtration pore prevents external impurity's entering, has avoided adopting filter core or filter disc the filter media can exist the risk of falling powder.

The cross section of the filtering hole adopts a trapezoid structure, and the corresponding injection mold is of a trapezoid tooth structure, so that not only can the enough strength be ensured, but also the width of the slit can be accurately controlled, and the requirement of mass stable production can be met.

Compared with a polyolefin powder sintered filter element, the filter hole has the advantages that the contact area between the filter part and the liquid medicine is greatly reduced, and the release of harmful substances in the traditional filter element into the liquid medicine is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic top view of a dry powder bag connector according to the present utility model.

Fig. 2 is an enlarged schematic view of a mark a of fig. 1.

Fig. 3 is a schematic perspective view of a dry powder bag connector according to the present utility model.

Fig. 4 is a schematic front view of the dry powder bag connector of the present utility model.

Fig. 5 is a schematic bottom view of the dry powder bag connector of the present utility model.

Fig. 6 is an enlarged schematic view of the mark B of fig. 5.

FIG. 7 is a schematic cut-away view of the mark C-C of FIG. 5.

Fig. 8 is an enlarged schematic view of the symbol D of fig. 7.

Fig. 9 is another perspective view of a dry powder bag connector according to the present utility model.

Fig. 10 is a schematic structural view of a dry powder pouch of the present utility model.

Wherein:

1-bag body, 2-connector body, 3-first inlet portion, 4-second inlet portion, 5-first outlet portion, 6-second outlet portion, 7-connecting portion, 8-filter portion, 9-filtration pore, 10-inlet channel, 11-outlet channel, 12-upper seal welding portion, 13-neck seal welding portion, 14-pipe, 15-filter head.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. In addition, embodiments of the present application and features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, and the described embodiments are merely some, rather than all, embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Examples:

as shown in fig. 1-10, the embodiment provides a dry powder bag, which comprises a bag body 1, wherein a dry powder bag connector is arranged on the bag body 1;

a dry powder bag connector comprising:

the connector comprises a connector body 2, wherein the connector body 2 is provided with a first liquid inlet part 3, a second liquid inlet part 4, a first liquid outlet part 5, a second liquid outlet part 6 and a connecting part 7;

the first liquid inlet part 3 and the first liquid outlet part 5 are arranged on two sides of the connecting part 7, and the second liquid inlet part 4 and the second liquid outlet part 6 are arranged on the connecting part 7 in a penetrating way;

the second liquid inlet portion 4 includes the feed liquor passageway 10 that runs through in connecting portion 7, is equipped with filter unit 8 at feed liquor passageway 10, and filter unit 8 and feed liquor passageway 10 integrated into one piece set up, are equipped with a plurality of filtration pore 9 on the filter unit 8, and the internal diameter size of filtration pore 9 is along becoming progressively greater towards connecting portion 7 direction.

The filtering part 8 and the liquid inlet channel 10 are integrally formed, so that the connector body 2 can be integrally formed during injection molding, an additional filter element or a filter disc is not required to be additionally arranged in the traditional process flow, the production process is simplified, and the production cost is reduced; meanwhile, the traditional structure is that a filter element or a filter disc is additionally arranged, and the powder falling risk exists in the filter material with the structure, so that the filtering effect is affected. In this scheme, the structure of utilizing filtration pore 9 prevents external impurity's entering, has avoided adopting filter core or filter disc the filter media can exist the risk of falling powder.

In the present embodiment, the structure of the filter hole 9, specifically, the filter hole 9 is a long slit-shaped structure, and the filter hole 9 is circumferentially arranged along the center of the filter portion 8.

For the arrangement of the filter holes 9, specifically, the filter holes 9 are distributed in a ring shape, a radial shape or a parallel shape along the center of the filter portion 8.

As for the size of the filter hole 9, specifically, the cross-sectional shape of the filter hole 9 is trapezoidal, the width dimension of the large end of the filter hole 9 is 0.55mm to 0.65mm, and the width dimension of the small end of the filter hole 9 is 0.15mm to 0.25mm. Specifically, referring to fig. 8, the width dimension of the large end of the filter hole 9 is 0.6mm, and the width dimension of the small end of the filter hole 9 is 0.2mm. The section of the filtering hole adopts a trapezoid structure, and the corresponding injection mold is of a trapezoid tooth structure, so that not only can the enough strength be ensured, but also the width of the slit can be accurately controlled, and the requirement of mass stable production is met.

The structure of the filtering hole 9 has a trapezoid cross section shape, so that the dry powder in the dry powder bag is prevented from leaking outwards through the bottom of the filtering hole 9, and the effects of filtering liquid and avoiding the entry of external impurities are also achieved.

In this embodiment, for the structure of the connector body 2, the end surface of the connector body 2 far away from the connecting portion 7 is provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is communicated with the first liquid inlet portion 3 and the second liquid inlet portion 4, the liquid inlet channel 10 is formed by the first liquid inlet portion 3, the second liquid inlet portion 4 and the liquid inlet groove, the liquid outlet groove is communicated with the first liquid outlet portion 5 and the second liquid outlet portion 6, and the first liquid outlet portion 5, the second liquid outlet portion 6 and the liquid outlet groove form a liquid outlet channel 11.

Specifically, the end face of the connector body 2 far away from the connecting portion 7 is provided with a convex upper seal welding portion 12, and the upper seal welding portion 12 is circumferentially arranged along the outer edge ends of the liquid inlet channel 10 and the liquid outlet channel 11.

The upper seal welding part 12 is arranged in a convex shape and seals the outer edge ends of the liquid inlet channel 10 and the liquid outlet channel 11.

Specifically, the surface of the connecting portion 7 is provided with a plurality of convex neck seal welding portions 13, and the adjacent neck seal welding portions 13 are arranged in parallel.

Specifically, the cross section of the connecting part 7 is a duck bill structure with a circular middle part and narrowed two ends.

The connecting portion 7 is used for connecting the bag body 1, and is welded with the bag body 1 through the neck seal welding portion 13 for sealing connection.

In this embodiment, a conduit 14 is disposed in the bag body 1, one end of the conduit 14 is connected to the second liquid outlet portion 6 of the dry powder bag connector, and the other end is provided with a filter head 15. The bag body 1 is filled with hemodialysis B powder, dialysis water enters from the first liquid inlet part 3, flows downwards from top to bottom along the liquid inlet channel 10 and the second liquid inlet part 4, dissolves the hemodialysis B powder in the dialysis water to form hemodialysis B concentrated solution when flowing through the hemodialysis B powder filled in the bag body 1, and flows out of the hemodialysis B concentrated solution through the filter head 15, the guide pipe 14, the second liquid outlet part 6, the liquid outlet channel 11 and the first liquid outlet part 5. The above filter unit 8 prevents the entry of foreign substances by the structure of the filter hole 9, and also prevents the hemodialysis B powder in the bag 1 from leaking out through the bottom of the filter hole 9.

To sum up, the structure of this scheme has simplified production technology, has reduced manufacturing cost, has avoided adopting filter core or filter element time filter media to have the risk of falling powder. The filtration pore structure of this scheme is simple, compares in polyolefin powder sintering filter core, has reduced the area of contact of filtration part and liquid medicine by a wide margin, has reduced the harmful substance release of traditional filter core in the liquid medicine.

The present utility model is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical proposal of the present utility model.

Claims

1. A dry powder bag connector, comprising:

2. The dry powder bag connector of claim 1, wherein the filter holes are of an elongated slit-like configuration and are circumferentially disposed along a center of the filter portion.

3. The dry powder bag connector of claim 2, wherein the filter holes are distributed annularly, radially, or parallel along the center of the filter portion.

4. The dry powder bag coupling according to claim 2, wherein the cross-sectional shape of the filter hole is trapezoidal, the width dimension of the large end of the filter hole is 0.55mm to 0.65mm, and the width dimension of the small end of the filter hole is 0.15mm to 0.25mm.

5. The dry powder bag connector of claim 1, wherein the end face of the connector body, which is far away from the connecting portion, is provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is communicated with the first liquid inlet portion and the second liquid inlet portion, the liquid inlet channel is formed by the first liquid inlet portion, the second liquid inlet portion and the liquid inlet groove, the liquid outlet groove is communicated with the first liquid outlet portion and the second liquid outlet portion, and the first liquid outlet portion, the second liquid outlet portion and the liquid outlet groove are formed into the liquid outlet channel.

6. The dry powder bag connector of claim 5, wherein the end face of the connector body away from the connecting portion is provided with a convex upper seal welding portion, and the upper seal welding portion is circumferentially arranged along the outer edge ends of the liquid inlet channel and the liquid outlet channel.

7. The dry powder bag connector of claim 6, wherein the surface of the connecting portion is provided with a plurality of convex neck seal welding portions, and adjacent neck seal welding portions are arranged in parallel.

8. The dry powder bag connector of claim 7, wherein the cross section of the connecting portion is a duckbill structure with a circular middle portion and narrowed ends.

9. The dry powder bag connector of claim 1, wherein the filter portion is integrally formed with the inlet channel.

10. A dry powder bag, comprising a bag body, wherein the bag body is provided with a dry powder bag connector according to any one of claims 1-9.