Blood purification apparatus

Patent metadata

Field	Value
Publication number	US-10471202-B2
Application number	US-201615343652-A
Country	US
Kind code	B2
Filing date	Nov 4, 2016
Priority date	May 13, 2014
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

The present teachings provide a blood purification apparatus in which inadvertent replacement of a container bag attached to a hanger portion can be avoided the blood purification apparatus including a holding device capable of holding a container bag that contains a liquid for blood purification treatment, such as dialysate, substitution fluid, or anticoagulant, the blood purification apparatus being capable of performing blood purification treatment using the liquid in the container bag, and the holding device including a hanger portion including an attachment portion to which the container bag can be attached, and movable between a use position and a replacement position, a measuring device capable of measuring the weight of the container bag held by the hanger portion, and a restricting device that restricts attachment and detachment of the container bag to and from the attachment portion when the hanger portion is in the use position.

First claim

The invention claimed is:

1. A blood purification apparatus comprising:
a holding device that holds a plurality of container bags containing a liquid for blood purification treatment, including a dialysate, substitution fluid, or anticoagulant, the blood purification apparatus configured to perform a blood purification treatment using the liquid in the at least one of the plurality of container bags based on control via a controller,
wherein the holding device includes:
a hanger portion including a plurality of attachment portions to which the plurality of container bags can be attached, the hanger portion being movable between a use position in which the plurality of container bags are used and a replacement position in which the plurality of container bags are replaced;
a load meter that measures a weight of the plurality of container bags held by the hanger portion; and
a restricting device that restricts attachment and detachment of the plurality of container bags to and from the plurality of attachment portions when the hanger portion is in the use position, wherein the restricting device is a shielding plate that covers and shields the plurality of attachment portions and restricts attachment and detachment of the plurality of container bags to and from the plurality of attachment portions; and

wherein the holding device includes a fixed main body portion that receives a shaft connected to the hanger portion so that the hanger portion pivots between the use position and the replacement position about an axis of the shaft.

2. The blood purification apparatus according to claim 1 , wherein the shielding plate is fixed to an apparatus main body and that covers and shields the plurality of attachment portions only when the hanger portion is in the use position.

3. The blood purification apparatus according to claim 2 , further comprising a position sensor that detects if the hanger portion is in the use position.

4. The blood purification apparatus according to claim 2 , further comprising a detecting device that detects if the hanger portion is in the use position, and wherein when, during the blood purification treatment, the detecting device does not detect that the hanger portion is in the use position, the controller stops the blood purification treatment by stopping the driving of the one or more peristaltic pumps of the blood purification apparatus and stopping measurement of the load meter.

5. The blood purification apparatus according to claim 2 , wherein the shielding plate comprises a substantially U-shaped body and a flange, and wherein the flange abuts the plurality of attachment portions in the use position to prevent removal of the plurality of container bags.

6. The blood purification apparatus according to claim 1 , wherein the shielding plate is attached to the hanger portion and that is movable between a first position in which the plurality of attachment portions are shielded and a second position in which the plurality of attachment portions are open, the shielding plate being movable from the first position to the second position only when the hanger portion is in the replacement position.

7. The blood purification apparatus according to claim 6 , further comprising a position sensor that detects if the hanger portion is in the use position.

8. The blood purification apparatus according to claim 6 , further comprising a detecting device that detects if the hanger portion is in the use position, and wherein when, during the blood purification treatment, the detecting device does not detect that the hanger portion is in the use position, the controller stops the blood purification treatment by stopping the driving of the one or more peristaltic pumps of the blood purification apparatus and stopping measurement of the load meter.

9. The blood purification apparatus according to claim 1 , further comprising a position sensor that detects if the hanger portion is in the use position.

10. The blood purification apparatus according to claim 9 , wherein when the position sensor detects that the hanger portion is not in the use position, a warning is output to a display of the blood purification apparatus.

11. The blood purification apparatus according to claim 9 , wherein when the position sensor detects that the hanger portion is not in the use position, a warning signal is output by a speaker, a warning light, or both.

12. The blood purification apparatus according to claim 1 , further comprising a detecting device that detects if the hanger portion is in the use position, and wherein when, during the blood purification treatment, the detecting device does not detect that the hanger portion is in the use position, the controller stops the blood purification treatment by stopping the driving of the one or more peristaltic pumps of the blood purification apparatus and stopping measurement of the load meter.

13. The blood purification apparatus according to claim 12 , wherein when, after the blood purification treatment is stopped, the detecting device detects that the hanger portion is in the use position, the blood purification treatment is resumed.

14. The blood purification apparatus according to claim 1 , wherein the blood purification apparatus comprises a first holding device and a second holding device, and the first holding device and the second holding device each are configured to hold separate container bags.

15. The blood purification apparatus according to claim 1 , wherein the restricting device is movable between a first position in which the plurality of attachment portions are shielded and a second position in which the plurality of attachment portions are unshielded.

16. The blood purification apparatus according to claim 15 , wherein the restricting device is only movable when the hanger portion is in the replacement position.

17. The blood purification apparatus according to claim 1 , wherein the hanger portion pivots between the use position and the replacement position by rotating the shaft within the main body portion about the axis of the shaft.

18. The blood purification apparatus according to claim 1 , wherein the shaft includes a protrusion that is detected by a position sensor when the hanger portion is in the use position, the position sensor being secured within the main body portion.

19. The blood purification apparatus according to claim 1 , wherein the hanger portion is a bar-like member and a first end of the hanger portion is attached to the shaft.

20. The blood purification apparatus according to claim 1 , wherein each of the plurality of attachment portions is a hook and the load meter is positioned near a proximal end of the hook where the hook is secured to the hanger portion.

Assignees

• Nikkiso Co Ltd

Inventors

• Mochizuki Hiroaki

Classifications

• A61M5/14

  Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor · CPC title

• A61M2205/3393

  by weighing the reservoir · CPC title

• A61M2205/18

  with alarm · CPC title

• A61M1/14

  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

• A61M5/1417

  Holders or handles for hanging up infusion containers · CPC title