US-12616784-B2 - Online dry powder A-and-dry powder B dispensing device for blood purification

US12616784B2US 12616784 B2US12616784 B2US 12616784B2US-12616784-B2

Abstract

An online dry powder A-and-dry powder B dispensing device for blood purification has a casing, two connecting slide blocks movably connected in the casing. A machine interface is respectively provided on the connecting slide blocks and a preparation interface is respectively provided on two opposite faces of the two connecting slide blocks. A connector is detachably connected to the casing. A dry powder container A and a dry powder container B are respectively in communication with the connector via a pipeline. The dry powder A and the dry powder B are simultaneously or separately connected to a hemodialysis machine for online preparation of concentrated solutions. When a dry powder mechanism is removed, the cleaning and disinfection function of the machine is available for cleaning and disinfecting channels and the interfaces in the dispensing mechanism.

Inventors

Guangyong Gao
Guikang YE
Jin Tong
Mingzhong LAI
Junquan ZHOU
Yuan Liu

Assignees

SWS HEMODIALYSIS CARE CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20220616
Priority Date: 20220126

Claims (9)

1 . An online dry powder A-and-dry powder B dispensing device for blood purification, characterized by comprising a casing ( 1 ), wherein two connecting slide blocks ( 2 ) are movably connected in the casing ( 1 ), the two connecting slide blocks ( 2 ) are oppositely disposed, a machine interface ( 21 ) is respectively provided on the connecting slide blocks ( 2 ), a preparation interface ( 22 ) is respectively provided on two opposite faces of the two connecting slide blocks ( 2 ), and the preparation interfaces ( 22 ) on the two connecting slide blocks ( 2 ) correspond in position; further comprising a connector ( 3 ) detachably connected to the casing ( 1 ), wherein the connector ( 3 ) is located between the two connecting slide blocks ( 2 ), one side, facing the two connecting slide blocks ( 2 ), of the connector ( 3 ) is respectively provided with a consumable interface ( 31 ), and the consumable interface ( 31 ) matches the position of the preparation interface ( 22 ) on the corresponding side; and further comprising a dry powder container A ( 4 ) and a dry powder container B ( 5 ), wherein the dry powder container A ( 4 ) and the dry powder container B ( 5 ) are respectively in communication with the connector ( 3 ) via a pipeline.
2 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 1 , characterized in that a flip cover ( 11 ) is rotatably connected to an upper end of the casing ( 1 ), the flip cover ( 11 ) is connected to a push block ( 6 ) by means of a push mechanism, and the push block ( 6 ) is connected to the connecting slide block ( 2 ) at the corresponding position by means of a first linkage ( 8 ) for pushing the connecting slide block ( 2 ) at the corresponding position to move.
3 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 2 , characterized in that a return spring ( 62 ) is provided between the push block ( 6 ) and the connecting slide block ( 2 ) at the corresponding positions.
4 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 2 , characterized in that the push mechanism comprises a push rod ( 71 ) and two second linkages ( 72 ), wherein one end of the push rod ( 71 ) is hinged to the flip cover ( 11 ), and the other end thereof is hinged to the two second linkages ( 72 ); one end of one second linkage ( 72 ) is hinged to the push rod ( 71 ), and the other end thereof is hinged to the casing ( 1 ); and one end of the other second linkage ( 72 ) is hinged to the push rod ( 71 ), and the other end thereof is hinged to the push block ( 6 ).
5 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 2 , characterized by further comprising a locking mechanism, wherein the locking mechanism comprises a rotary shaft ( 91 ) rotatably provided on the flip cover ( 11 ), a fixture block ( 92 ), a shifting block ( 93 ) and a torsional spring ( 94 ) are provided on the rotary shaft ( 91 ); one end of the torsional spring ( 94 ) is compressed on the shifting block ( 93 ), and the other end thereof is compressed on the flip cover ( 11 ); and a groove ( 12 ) is provided in the casing ( 1 ) to engage with the fixture block ( 92 ).
6 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 1 , characterized in that two machine interfaces ( 21 ) and two preparation interfaces ( 22 ) are disposed on each of the connecting slide blocks ( 2 ), one in and one out respectively; and two consumable interfaces ( 31 ) are disposed on the side, facing the two connecting slide blocks ( 2 ), of the connector ( 3 ), one in and one out, respectively.
7 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 1 , characterized in that an open groove is provided in the casing ( 1 ) and the connector ( 3 ) is able to be fit into the open groove.
8 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 2 , characterized in that the casing ( 1 ) is also provided with a guide mechanism, and the push block ( 6 ) is in sliding engagement with the guide mechanism.
9 . The online dry powder A-and-dry powder B dispensing device for blood purification according to claim 1 , characterized in that a guide groove ( 23 ) is respectively provided in the two opposite faces of the two connecting slide blocks ( 2 ) in the vertical direction, and the side, facing the two connecting slide blocks ( 2 ), of the connector ( 3 ) is respectively provided with a guide rib ( 32 ) to engage with the guide groove ( 23 ).

Description

TECHNICAL FIELD The present invention relates to the technical field of medical instruments, in particular to an online dry powder A-and-dry powder B dispensing device for blood purification. BACKGROUND Dialysis treatment needs to be performed with dialysate, which is a fluid for solute exchange with blood on either side of a dialysis membrane during hemodialysis. A plurality of substances contained in the dialysate would react chemically to produce precipitation (mostly calcium carbonate), so they are usually divided into a component A and a component B before being prepared into the dialysate, to be specific, they are divided into a concentrated solution A and a concentrated solution B, which are separately sucked into a dialysis machine and mixed with reverse osmosis water to prepare the dialysate immediately before any treatment; The concentrated solution B is slightly alkaline according to pH value and prone to growing bacteria. The bacterial growth is effectively inhibited when the concentrated solution B is prepared in dry powder. In addition, to facilitate transportation and storage, the component A and the component B are normally made into dry powder, namely, dry powder A and dry powder B, and the reverse osmosis water is added to prepare the concentrated solutions immediately before use. The preparation processes of the dialysate are formulated as follows: dialysate=(concentrated solution A+reverse osmosis water)+(concentrated solution B+reverse osmosis water), concentrated solution A=dry powder A+reverse osmosis water, and concentrated solution B=dry powder B+reverse osmosis water. There are two ways for dialysate dispensing: one is to prepare the concentrated solution A and the concentrated solution B separately and then use them in the dialysis machine, and the other is to prepare the concentrated solution A separately and prepare the concentrated solution B online with the dry powder B. There is no device that prepares the concentrated solution A and the concentrated solution B online with the dry powder A and the dry powder B synchronously. SUMMARY To overcome the shortcomings of the prior art, the present invention provides an online dry powder A-and-dry powder B dispensing device for blood purification. In order to achieve the above-mentioned objective, the present invention provides the following solutions: An online dry powder A-and-dry powder B dispensing device for blood purification, which includes a casing, wherein two connecting slide blocks are movably connected in the casing, the two connecting slide blocks are oppositely disposed, a machine interface is respectively provided on the connecting slide blocks, a preparation interface is respectively provided on two opposite faces of the two connecting slide blocks, and the preparation interfaces on the two connecting slide blocks communicate with each other when the flip cover is closed; further includes a connector detachably connected to the casing, wherein the connector is located between the two connecting slide blocks, one side, facing the two connecting slide blocks, of the connector is respectively provided with a consumable interface, and the consumable interface matches the position of the preparation interface on the corresponding side;further includes a dry powder container A and a dry powder container B, wherein the dry powder container A and the dry powder container B are respectively in communication with the connector via a pipeline. According to the above-mentioned solution, the dry powder A and the dry powder B are simultaneously or separately connected to a hemodialysis machine for online dialysate preparation. When the dialysate is prepared online, the connector is connected to the casing. In that case, the preparation interface is in communication with the consumable interface on the corresponding side, and the machine interface on the connecting slide block is communicated with the machine, so that the preparation mechanism is in communication with a dry powder mechanism to form a preparation passage; the reverse osmosis water in the machine enters the dry powder container A and the dry powder container B sequentially or separately after passing through the machine interface, the connecting slide block, the preparation interface, the consumable interface and the connector in order; and the concentrated solutions prepared in the dry powder container A and the dry powder container B enter the machine in the reverse direction of that of the reverse osmosis water, thus realizing simultaneously or separately online preparation of the concentrated solutions in the dry powder container A and the dry powder container B. Before cleaning and disinfection, the connector is disassembled from the casing, the two connecting slide blocks are moved towards each other and compressed together. In that case, the preparation interfaces on the two connecting slide blocks are in communication with one another to form a closed loop of