Dialysate extraction device with projected collection port, mounted wall part and attachable connection member

Patent metadata

Field	Value
Publication number	US-9925119-B2
Application number	US-201414505561-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Apr 5, 2012
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A dialysate extraction device comprising a dialysate extraction means including an inlet port and an outlet port adapted to be connected to a flow path of fluid for flowing the fluid therethrough and a projected collection port for collecting the fluid flowing through the inlet and outlet port; a outer circumference wall part mounted on the dialysate extraction means so that it covers a projected end of the collection port and is projected therefrom; a connection member formed with a connection portion to be connected to the collection port and a fitting portion to be fitted into an inner circumference of the outer circumference wall part and adapted to extract the fluid through the collection port under a condition in which the connection portion is connected to the outer circumference wall part; and correction portions formed on the inner circumference of the outer circumference wall part for correcting position and attitude of the connection member relative to the collection port before a tip end of the connection member reaches the projected end of the collection port during insertion of the connection member into the outer circumference wall part.

First claim

What is claimed is:

1. A dialysate extraction device comprising:
a) a dialysate extraction means including:
i) an inlet port;
ii) an outlet port, wherein the inlet port and the outlet port are adapted to be connected to a flow path of fluid for flowing the fluid therethrough; and
iii) a projected collection port including a projected end, wherein the projected collection port is configured for collecting the fluid flowing through the inlet port and the outlet port;

b) an outer circumference wall part mounted on the dialysate extraction means so that the outer circumference wall part covers the projected end of the projected collection port and is projected therefrom;
c) a connection member including:
i) a connection portion, wherein the connection portion is adapted to be connected to the projected collection port; and
ii) a fitting portion that is adapted to be fitted into an inner circumference of the outer circumference wall part; and

the connection member is adapted to extract the fluid from the collection port under a condition in which the connection portion is connected to the outer circumference wall part;
d) correction portions formed on the inner circumference of the outer circumference wall part, wherein the correction portions correct position and attitude of the connection member relative to the projected collection port before a tip end of the connection member reaches the projected end of the projected collection port during insertion of the connection member into the outer circumference wall part.

2. The dialysate extraction device of claim 1 , wherein a length between the projected end of the projected collection port and a tip end of the outer circumference wall part is substantially same as or larger than a length between the tip end of the connection member and the fitting portion of the connection member.

3. The dialysate extraction device of claim 1 , wherein the correction portions are formed as tapered portions formed on the inner circumference of the outer circumference wall part.

4. The dialysate extraction device of claim 1 , wherein the fitting portion of the connection member comprises a seal member for sealing between the outer circumference of the connection member and the inner circumference of the outer circumference wall part.

5. The dialysate extraction device of claim 1 , wherein the dialysis extraction device further comprises an open/close member detachably mounted on the outer circumference wall part for opening and closing the projected collection port, and
wherein the projected collection port forms a guide path for guiding the fluid introduced through the inlet port toward the projected end of the projected collection port and a discharge path for discharging the fluid guided by the guide path toward the outlet port under a condition in which the open/close member is mounted on the outer circumference wall part.

6. The dialysate extraction device of claim 5 , wherein the open/close member is provided with a seal member for sealing between the outer circumference or the tip end face of the outer circumference wall part and the open/close member.

7. A blood purification apparatus comprising the dialysate extraction device of claim 1 .

8. A connection line having a tip end to which the connection member of claim 1 is connected.

9. The dialysate extraction device of claim 2 , wherein the correction portions are formed as tapered portions formed on the inner circumference of the outer circumference wall part.

10. The dialysate extraction device of claim 2 , wherein the fitting portion of the connection member comprises a seal member for sealing between the outer circumference of the connection member and the inner circumference of the outer circumference wall part.

11. The dialysate extraction device of claim 3 , wherein the fitting portion of the connection member comprises a seal member for sealing between the outer circumference of the connection member and the inner circumference of the outer circumference wall part.

12. The dialysate extraction device of claim 2 , wherein the dialysis extraction device further comprises an open/close member detachably mounted on the outer circumference wall part for opening and closing the projected collection port, and
wherein the projected collection port forms a guide path for guiding the fluid introduced through the inlet port toward the projected end of the projected collection port and a discharge path for discharging the fluid guided by the guide path toward the outlet port under a condition in which the open/close member is mounted on the outer circumference wall part.

13. The dialysate extraction device of claim 4 , wherein the dialysis extraction device further comprises an open/close member detachably mounted on the outer circumference wall part for opening and closing the projected collection port, and
wherein the projected collection port forms a guide path for guiding the fluid introduced through the inlet port toward the projected end of the projected collection port and a discharge path for discharging the fluid guided by the guide path toward the outlet port under a condition in which the open/close member is mounted on the outer circumference wall part.

14. The dialysate extraction device of claim 11 , wherein the dialysis extraction device further comprises an open/close member detachably mounted on the outer circumference wall part for opening and closing the projected collection port, and
wherein the projected collection port forms a guide path for guiding the fluid introduced through the inlet port toward the projected end of the projected collection port and a discharge path for discharging the fluid guided by the guide path toward the outlet port under a condition in which the open/close member is mounted on the outer circumference wall part.

15. A blood purification apparatus comprising the dialysate extraction device of claim 2 .

16. A blood purification apparatus comprising the dialysate extraction device of claim 3 .

17. A blood purification apparatus comprising the dialysate extraction device of claim 14 .

18. A connection line having a tip end to which the connection member of claim 2 is connected.

19. A connection line having a tip end to which the connection member of claim 13 is connected.

20. A connection line having a tip end to which the connection member of claim 17 is connected.

Assignees

• Nikkiso Co Ltd

Inventors

• Takahashi Masahiro
• Nakano Yusuke
• Ishizaki Fumihiko
• Edamura Hachiro
• Nimura Hiroshi

Classifications

• A61M1/3646

  Expelling the residual body fluid after use, e.g. back to the body · CPC title

• A61M1/3465

  using dialysate as substitution fluid · CPC title

• A61M1/342

  Adding solutions to the blood, e.g. substitution solutions (for preventing coagulation A61M1/3672) · CPC title

• A61M1/14 Primary

  Dialysis systems; Artificial kidneys; Blood oxygenators (semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00){; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis} · CPC title

• A61M1/1619

  Sampled collection of used dialysate, i.e. obviating the need for recovery of whole dialysate quantity for post-dialysis analysis · CPC title