CN219110627U - Adapter, medical device and central liquid supply system - Google Patents

Abstract

The present utility model relates to an adapter for connecting medical equipment to a central fluid supply system. The adapter comprises a pipette interface, a pipeline clamp, an interface connector, a sealing component and a quick-connect connector; the liquid suction pipe interface, the interface connector and the quick connecting joint are sequentially and fluidly connected to form a fluid passage; one end of the interface connector is fixed in the liquid suction pipe interface through a pipeline clamp; the seal assembly is disposed at the junction of the quick connect fitting and the interface connector for preventing leakage of fluid at the junction. The utility model also relates to a medical device having the adapter and a central fluid supply system having an adapter interface coupled to the adapter. The convenient interconnection and intercommunication of the medical equipment and the central liquid supply system for providing the therapeutic fluid which is prepared in a centralized way are realized.

Description

Adapter, medical device and central liquid supply system

Technical Field

The present utility model relates to an adapter for connecting a medical device to a central fluid supply system, and in particular to a medical device having such an adapter and a central fluid supply system having an adapter interface coupled to the adapter.

Background

Dialysis treatment is a clearance procedure that generally replaces the kidneys to remove toxic substances and metabolites and helps patients regulate fluid balance and electrolyte balance. Dialysis treatments include various types of dialysis procedures, such as hemodialysis and peritoneal dialysis; wherein hemodialysis is typically performed by using a hemodialysis machine. Traditional Hemodialysis (HD) generally uses diffusion to remove toxic substances and metabolic waste products from the patient's blood. By means of the dialyzer, the concentration gradient in the hollow fiber membranes in which the blood and the dialysate are exchanged results in diffusion of the substances. Whereas Hemodiafiltration (HDF) is a treatment modality that combines convective and diffusive clearance, for example, using a high-flux dialyzer, similar to traditional hemodialysis, providing diffusive clearance; on the basis, the device also uses a replacement liquid (also can be a dialysis liquid) to directly or indirectly supply to the extracorporeal circulation pipeline so as to realize the convection removal of toxin.

Whether a traditional hemodialysis treatment modality or a more advanced hemodiafiltration treatment modality is employed, it is desirable to provide a large volume of dialysate prepared from concentrate (concentrate or dry powder). For example, for a hospital or dialysis center, if it uses filled concentrate (i.e., an acidic solution for a liquid a and an alkaline solution for a liquid B) to prepare a dialysate for use in dialysis treatment, for example, 5L or 10L of filled concentrate is costly to transport, while requiring a large storage space for storing unused concentrate and storing the used concentrate tank; in addition, frequent handling of the concentrate tank also additionally occupies medical care resources, and increases the labor intensity of medical staff. For hospitals or dialysis centers using on-line dry powder barrels or bags, while transportation costs and storage space are reduced compared to using filled concentrate, the relatively high price of individual dry powder barrels or bags also faces the problem of occupying medical resources, such as requiring medical personnel to install the dry powder barrels or bags onto the hemodialysis machine prior to developing dialysis treatment, and to retrieve the used barrels or bags after completion of dialysis treatment, which is detrimental to optimizing medical resources for use in limited medical care for higher value dialysis treatment monitoring and patient care.

Accordingly, more and more hospitals or dialysis centers wish to employ or have already used a central liquid supply system (CDS) to save costs and to release healthcare resources. Common central fluid supply systems include various supplies for delivering concentrate or dialysate: a Central Dialysate Delivery System (CDDS), a means of providing centrally prepared dialysate directly to each hemodialysis machine, wherein concentrate a and B have been mixed with Reverse Osmosis (RO) water to prepare the desired dialysate; a Central Concentrate Delivery System (CCDS), a system that centrally provides concentrate a and B to each hemodialysis machine, respectively, after which the concentrate a and B are mixed with RO water inside the hemodialysis machine to prepare the desired dialysate.

In order to interconnect the central fluid supply system with the hemodialysis machine and to enable it to supply concentrate fluid a and B to the dialysis machine, it is often necessary to provide a CDS interface module inside the hemodialysis machine. However, not all hemodialysis machines on the market or in use are configured with CDS interface modules, which are generally relatively expensive if available to the device manufacturer, and the new setting of the CDS interface modules is economically more stressed for hospitals or dialysis centers, which is disadvantageous for the popularization and application of the central fluid supply system mode. For some dialysis machines, if the manufacturer does not provide the CDS interface module, or the optional CDS module cannot be directly installed on the dialysis machine, the water path system of the dialysis machine needs to be optimally designed, and the design is changed, so that the time and the labor are wasted and the cost is huge for the dialysis machine manufacturer.

In view of the foregoing, there is a need for a solution for enabling universal and convenient interconnection of medical devices (e.g., hemodialysis machines) to a central fluid supply system, while avoiding as much as possible the damage to the original equipment or its components and the potential risk of fluid leakage or disinfectant mixing into the central fluid supply system that may result.

Disclosure of Invention

The object of the present utility model is to overcome one of the aforementioned disadvantages of the prior art or other possible disadvantages of the prior art not mentioned herein, and to provide an adapter for connecting a medical device with a central fluid supply system, as well as a medical device with such an adapter and a central fluid supply system with an adapter interface coupled with such an adapter, thereby enabling a solution for conveniently providing a medical device with a centrally prepared therapeutic medical fluid.

According to one embodiment of the present utility model, there is provided an adapter for connecting medical equipment to a central fluid supply system, the adapter comprising a pipette interface, a tubing clamp, an interface connector, a seal assembly, and a quick connect fitting; the liquid suction pipe interface, the interface connector and the quick connecting joint are sequentially and fluidly connected to form a fluid passage; one end of the interface connector is fixed in the liquid suction pipe interface through a pipeline clamp; the seal assembly is disposed at the junction of the quick connect fitting and the interface connector for preventing leakage of fluid at the junction.

According to an alternative embodiment of the utility model, the end of the pipette interface remote from the interface connector is used for connecting a medical device, which through an adapter realizes a quick connection with the central fluid supply system.

According to an alternative embodiment of the utility model, at least one filter is arranged between the interface connector and the quick connect coupling.

According to an alternative embodiment of the present utility model, the line clamp further comprises a line clamp and a rivet.

According to an alternative embodiment of the utility model, the line clamp is coaxially arranged within the interior cavity of the pipette connector and is sleeved on the upper line of the interface connector.

According to an alternative embodiment of the utility model, the rivet penetrates the wall of the one side of the pipette interface, rests against the line clamp or penetrates the line clamp.

According to an alternative embodiment of the utility model, the rivet is a snap-on rivet which penetrates further into a pipe wall recess or hole in the upper pipe of the interface connector.

According to an alternative embodiment of the utility model, the seal assembly further comprises a wash chamber seal and an O-ring seal.

According to an alternative embodiment of the utility model, the cleaning chamber seal is arranged coaxially at the bottom of the pipette joint and is sleeved on the lower line of the interface connector and on the upper line of the quick connect coupling.

According to an alternative embodiment of the utility model, an O-ring seal is arranged in the cleaning chamber seal and rests against the upper pipe opening of the quick connect coupling.

According to another embodiment of the present utility model, there is provided a medical device comprising the adapter disclosed herein.

According to yet another embodiment of the present utility model, a central fluid supply system is provided that includes an adapter interface coupled with the adapter disclosed herein.

According to an alternative embodiment of the utility model, at least one filter is arranged between the adapter interface and the conduit of the central liquid supply system.

According to the exemplary embodiment provided by the utility model, the adapter not only realizes the quick interconnection and intercommunication between the dialysis machine and the central liquid supply system, but also does not need to additionally customize a CDS module or change the original waterway design scheme of the dialysis machine, and is economical, efficient, safe and reliable.

Drawings

FIG. 1 shows a schematic structural view of an adapter for connecting medical equipment to a central fluid supply system provided by the present utility model;

FIG. 2 shows a cross-sectional view of a preferred embodiment of an adapter provided in accordance with the present utility model;

FIG. 3 illustrates an exploded view of the adapter shown in FIG. 2;

FIG. 4 illustrates a quick connect fitting of an adapter employed by the present utility model in a disconnected state with a coupled mating interface; and

fig. 5 shows a state in which a quick-connect coupling of an adapter employed in the present utility model is connected to an adapter interface.

Detailed Description

Exemplary embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. For the sake of clarity and brevity, the actual embodiments are not limited to the features described in the specification. It should be noted that in the course of making improvements and modifications to any one of the practical embodiments, the process of making such improvements and modifications may be very complex and time consuming to achieve a particular objective, but are still conventional means for those skilled in the art having the benefit of this disclosure. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and detailed implementation modes and processes are given, but the protection scope of the present utility model includes but is not limited to the following embodiments.

As shown in fig. 1, the present utility model provides an adapter for quick connection of a medical device to a central fluid supply system, comprising a pipette interface 1, which pipette interface 1 is typically arranged to be connected to the medical device in order to draw the medical device with the fluid required for treatment. For the example of a dialysis machine, the pipette interface 1 is typically connected to a removable elongated concentrate suction tube to facilitate the withdrawal of concentrate from the dialysis fluid tank. In order to achieve a quick connection to the central liquid supply system, the pipette interface 1 according to the utility model is not equipped with a conventional elongate concentrate suction tube, the end of which remote from the interface connector is still connected to the medical device.

As shown in fig. 2, the adapter further comprises a pipeline clamp 2, a connector interface 3, a sealing assembly 4 and a quick connect coupling 5; wherein, the pipette interface 1, the interface connector 3 and the quick connection joint 5 are sequentially connected in fluid to form a fluid passage. According to a preferred embodiment of the utility model, the pipette interface 1, the interface connector 3 and the quick connect coupling 5 are coaxially arranged, thereby facilitating the simplification of the fluid path structure, while also facilitating the cleaning and sterilization of the path, etc.

One end of the interface connector 3 is fixed in the pipette interface 1 through the pipeline clamp 2; the sealing assembly 4 is arranged at the connection part of the quick connection joint 5 and the interface connector 3, and is used for preventing fluid from leaking at the connection part.

The line clamp 2 may be a clamp with threads or other type of engagement configuration to enable fastening of the port connector 3 within the pipette port 1.

In order to further optimize the structure of the pipe clamp provided by the present utility model and to simplify the manufacturing and assembling processes thereof, as shown in fig. 3, the pipe clamp 2 according to a preferred embodiment of the present utility model includes a pipe clamp 21 and a rivet 22. The pipeline clamp 21 is coaxially arranged in the inner cavity of the liquid suction pipe interface 1 and sleeved on the upper pipeline of the interface connector 3. The rivet 22 penetrates through the pipe wall at one side of the liquid suction pipe interface 1 and is abutted against the pipeline clamp 21 or penetrates through the pipeline clamp 21; preferably, the rivet 22 is a snap-in rivet.

According to one embodiment of the utility model, the pipe wall of the upper pipe of the mouthpiece 3 is provided with a groove or hole, and the snap-in rivet penetrates the pipe clamp 21 and penetrates further into the groove or hole of the upper pipe of the mouthpiece 3, thereby firmly fixing the pipette interface 1, the pipe clamp 21 and the mouthpiece 3 together.

Further in accordance with a preferred embodiment of the present utility model, the seal assembly 4 includes a purge cavity seal 41 and an O-ring seal 42. The cleaning cavity sealing member 41 is coaxially arranged at the bottom of the liquid suction pipe interface 1 and is sleeved on the lower pipeline of the interface connector 3 and the upper pipeline of the quick connection joint 5. The O-ring seal 42 is arranged in the cleaning chamber seal 41 and rests against the upper pipe opening of the quick connect coupling 5.

According to a preferred embodiment of the utility model, the quick connect coupling 5 is further provided with a seal on the lower pipe, preferably another O-ring seal, to provide a good seal when interconnection is achieved. The quick connect connector may be a commercially available component such as a PMC12 series quick connect connector (CPC quick coupling) manufactured by Wolftechnik Filtersysteme.

According to another embodiment of the present utility model, there is provided a medical device comprising an adapter as disclosed herein, such as a hemodialysis machine to which the adapter is attached or removably fitted.

According to the adapter provided by the utility model, the person skilled in the art knows that it is possible to install the adapter during the manufacture of the medical device or to carry out the assembly of the adapter on site after the distribution of the medical device to a hospital or dialysis centre; the operation is simple and easy, and no design change or additional damage is required for the original medical equipment. Furthermore, an interface can be provided on the medical device side, inside which at least one filter can be installed; for example, the filter is arranged between the interface connector 3 and the quick connect coupling 5 of the adapter. The optimized design with the at least one filter may prevent contaminants from entering the hemodialysis machine with concentrate or dialysate provided by the central fluid supply system. Those skilled in the art will recognize that this additional interface with a filter may also be provided between the tubing and the adapter at the medical device end to ensure that the concentrate or dialysate delivered to the dialysis machine is clean.

According to the adapter provided by the utility model, the person skilled in the art can further know that compared with the scheme of adding the CDS interface module to medical equipment (such as a hemodialysis machine), the manufacturing process, the installation difficulty and the manufacturing cost are far lower than those of the CDS interface module; in addition, the adapter provided by the utility model makes it possible that a hemodialysis machine which cannot directly install the CDS interface module can be simply and quickly connected to the CDS; and the connection to the CDS can be obtained without the need for destructive modification of the original concentrate pipette of the hemodialysis machine (e.g., shearing the concentrate pipette, etc.). More importantly, the scheme provided by the utility model can easily avoid the risk that disinfectant enters the CDS pipeline when the dialysis machine is disinfected because the original dialysis machine is not structurally modified at all. If the dialysis machine with the adapter does not need to be reconnected to the CDS, the adapter can be simply and quickly removed and the concentrate pipette can be reassembled on the pipette interface, allowing the dialysis machine to resume the solution of using the concentrate tank.

According to another embodiment of the present utility model, a central fluid supply system is provided that includes an adapter interface coupled with the adapter disclosed herein. As shown in fig. 4, when the lower end of the adapter provided by the utility model and located at the dialysis machine end, i.e. the quick connector 5 is a male connector, the adapter interface 6 provided at the central liquid supply system end is a female connector. The adapter interface 6 can be designed as a female connector which mates with the quick connector 5 by itself, or can be directly a commercially available component such as CPC quick connector (quick coupling) produced by Wolftechnik Filtersysteme company, so long as the two together form a set of quick connector, the male connector and the female connector can be connected or disconnected very quickly, thereby realizing convenient interconnection of the medical device and the central liquid supply system.

As shown in fig. 5, after the adapter (quick connect connector 5) at the dialysis machine end and the adapter interface 6 provided at the central fluid supply system end are connected together in a male-female manner to form a fluid path, the concentrate can pass through the fluid path, i.e. the central fluid supply system can supply concentrate prepared centrally to the dialysis machine during the dialysis treatment phase. In the whole treatment process, medical staff does not need to manually carry or replace a dialysis liquid barrel or manually replace a dry powder bag and the like. After the dialysis treatment is completed, the male and female interfaces of the adapter at the dialysis machine end and the adapter interface 6 arranged at the central liquid supply system end are disconnected, and at this time, the concentrated liquid can not pass through the fluid passage any more. The healthcare worker may then replace the disconnected adapter (male connector) with the flush chamber for cleaning, sterilization, etc. The automatic sealing can be realized based on the sealing design between the adapter at the dialysis machine end and the adapter interface 6 at the central liquid supply system end, which correspond to the male and female interfaces, so as to ensure no liquid leakage.

According to a preferred embodiment of the utility model, at least one three-way connector may be further provided between the adapter interface 6 and the tubing of the CDS to facilitate circulation of fluid and cleaning of the tubing within the tubing of the CDS at the adapter interface 6. According to a preferred embodiment of the utility model, at least one interface block can be arranged between the adapting interface 6 and the pipeline of the CDS, and the pipeline wiring can be simplified by adopting the design mode of the interface block. Furthermore, it is known to those skilled in the art that the filter may be mounted in the interface block in addition to being provided at the medical device end as described above; or filters are arranged in the dialysis machine end and the CDS interface block so as to ensure the quality safety of the conveyed concentrated solution or the dialyzate.

The structure of the adapter and the adapter interface 6 coupled thereto according to the present utility model is well known to those skilled in the art, and can be selectively applied to the centralized supply of the concentrated solutions a or B, or both. For example, when applied to a concentrated supply of concentrate A, the source of concentrate B is preferably an on-line dry powder bucket or a dry powder bag.

The adaptor provided by the present utility model and the adaptor interface 6 structure coupled thereto may be constructed as a standard interface design, that is to say it may provide a standard design for the interface of a centralized liquid supply system, so as to be compatible with the differentiated practices of different CDS manufacturers or customers.

It should be further noted that this embodiment describes the specific construction of the adapter and the adapter interface 6 coupled thereto provided by the present utility model by taking a dialysis machine and a central centralized liquid supply system as examples, but it is clear to those skilled in the art that the structure of the adapter and the adapter interface 6 coupled thereto provided by the present utility model is not limited to the field of dialysis machines, and any application scenario requiring centralized preparation of medical liquids or gases to medical devices may utilize the structure of the adapter and the adapter interface 6 coupled thereto taught by the present utility model, whether or not it is structurally fine-tuned or material-replaced or modified.

Although the present utility model has been described in detail based on the preferred embodiment, those skilled in the art will recognize that the scope of the claimed utility model is not limited to the preferred embodiment. Various changes and modifications to the embodiments described herein will be apparent to those skilled in the art, and it is intended to be included within the scope of the utility model as defined in the appended claims.

Claims (11)

1. An adapter for connecting a medical device with a central fluid supply system, characterized in that the adapter comprises a pipette interface (1), a line clamp (2), an interface connector (3), a sealing assembly (4) and a quick connect fitting (5); wherein, the liquid crystal display device comprises a liquid crystal display device,

the liquid suction pipe interface (1), the interface connector (3) and the quick connecting joint (5) are sequentially and fluidly connected to form a fluid passage;

one end of the interface connector (3) is fixed in the liquid suction pipe interface (1) through the pipeline clamp (2);

the sealing assembly (4) is arranged at the connection part of the quick connection joint (5) and the interface connector (3) and is used for preventing fluid from leaking at the connection part.

2. The adapter of claim 1 wherein the adapter is configured to receive the adapter,

one end of the liquid suction pipe interface (1) far away from the interface connector (3) is used for connecting medical equipment, and the medical equipment is quickly connected with the central liquid supply system through the adapter; and/or

At least one filter is arranged between the interface connector (3) and the quick connect coupling (5).

3. The adapter according to claim 1, characterized in that the line clamp (2) further comprises a line clamp (21) and a rivet (22).

4. An adapter according to claim 3, characterized in that the line clamp (21) is coaxially arranged in the inner cavity of the pipette interface (1) and is sleeved on the upper line of the interface connector (3).

5. An adapter according to claim 3 or 4, characterized in that the rivet (22) extends through a wall of the pipette interface (1) on one side, against the line clamp (21) or through the line clamp (21).

6. The adapter according to claim 5, characterized in that the rivet (22) is a snap-in rivet which penetrates further into a pipe wall groove or hole on the upper pipe of the interface connector (3).

7. The adapter according to any of claims 1 to 4, 6, wherein the sealing assembly (4) further comprises a wash chamber seal (41) and an O-ring seal (42).

8. The adapter of claim 7 wherein the adapter is configured to receive the adapter,

the cleaning cavity sealing piece (41) is coaxially arranged at the bottom of the liquid suction pipe interface (1) and sleeved on a lower pipeline of the interface connector (3) and an upper pipeline of the quick connection joint (5); and/or

The O-shaped sealing ring (42) is arranged in the cleaning cavity sealing piece (41) and abuts against the upper pipeline opening of the quick connection joint (5).

9. A medical device, characterized in that it comprises an adapter according to any one of claims 1 to 8.

10. A central liquid supply system, characterized in that it comprises an adapter interface (6) coupled with an adapter according to any of claims 1-8.

11. The central fluid supply system according to claim 10, wherein at least one filter is disposed between the adapter interface and a conduit of the central fluid supply system.

Images