IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0728162
(2012-12-27)
|
공개번호 |
US-0118961
(2013-05-16)
|
우선권정보 |
DE-10224750.1 (2002-06-04) |
발명자
/ 주소 |
- GmbH, FRESENIUS MEDICAL CARE DEUTSCHLAND
|
출원인 / 주소 |
- FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
A dialysis machine that includes a valve member having a deformable area configured to deform outwardly away when pressurized fluid is introduced into the valve member. The valve member is configured so that, when a dialysis fluid cassette is disposed in a cassette compartment of the dialysis machin
A dialysis machine that includes a valve member having a deformable area configured to deform outwardly away when pressurized fluid is introduced into the valve member. The valve member is configured so that, when a dialysis fluid cassette is disposed in a cassette compartment of the dialysis machine and pressurized fluid is introduced into the valve member, the deformable area obstructs a fluid channel of the dialysis fluid cassette to control dialysis fluid flow therethrough.
대표청구항
▼
1. A dialysis system, comprising: a dialysis machine having a cassette compartment configured to receive a dialysis fluid cassette that comprises a fluid channel formed between a base and a flexible membrane that is attached to the base, the cassette compartment being configured such that the membra
1. A dialysis system, comprising: a dialysis machine having a cassette compartment configured to receive a dialysis fluid cassette that comprises a fluid channel formed between a base and a flexible membrane that is attached to the base, the cassette compartment being configured such that the membrane of the dialysis fluid cassette is positioned adjacent a machine block of the dialysis machine when the dialysis fluid cassette is disposed in the cassette compartment of the dialysis machine;a valve member at least partially disposed in a recess defined by the machine block, the valve member being substantially aligned with a portion of the fluid channel of the dialysis fluid cassette when the dialysis fluid cassette is disposed in the cassette compartment of the dialysis machine, the valve member comprising a deformable area configured to deform outwardly when pressurized fluid is introduced into the valve member,wherein the valve member is configured so that the deformable area obstructs the fluid channel of the dialysis fluid cassette to control dialysis fluid flow therethrough when the dialysis fluid cassette is disposed in the cassette compartment of the dialysis machine and pressurized fluid is introduced into the valve member. 2. The dialysis system of claim 1, wherein the dialysis machine further comprises a pressurized air source fluidly connected to the valve member such that pressurized air can be delivered from the pressurized air source to the valve member. 3. The dialysis system of claim 1, wherein the dialysis machine further comprises a vacuum source fluidly connected to the valve member such that vacuum pressure can be applied to the valve member by the pressurized air source to move the deformable area of the valve member from an outwardly deformed position to an undeformed or an inwardly deformed position. 4. The dialysis system of claim 1, wherein the dialysis machine further comprises an inflatable pad capable of pressing the dialysis fluid cassette against the machine block. 5. The dialysis system of claim 1, wherein the dialysis machine comprises a door that, when closed, cooperates with the machine block to define the cassette compartment. 6. The dialysis system of claim 1, wherein, when the dialysis fluid cassette is disposed in the cassette compartment, the flexible membrane of the dialysis fluid cassette is substantially parallel to an adjacent face of the machine block. 7. The dialysis system of claim 1, wherein the valve member comprises a valve body defining a pressure passage and a sealing cap disposed at a first end of the valve body such that the sealing cap closes off the pressure passage at the first end of the valve body, the sealing cap forming the deformable area, which is configured to deform outwardly away from the valve body when pressurized fluid is introduced into the pressure passage of the valve body. 8. The dialysis system of claim 7, wherein the sealing cap has a radially inwardly directed projection configured to prevent direct contact of the valve body with the deformable area of the sealing cap. 9. The dialysis system of claim 7, further comprising a fastening component coupled to a second end of the valve body opposite the first end, the fastening component configured to abut the machine block to secure the valve member to the machine block. 10. The dialysis system of claim 7, wherein the sealing cap is detachable from the valve body. 11. The dialysis system of claim 1, wherein the dialysis system is a hemodialysis system. 12. The dialysis system of claim 1, wherein the dialysis system further comprises the dialysis fluid cassette. 13. The dialysis system of claim 12, wherein dialysate flows through the fluid channel of the dialysis fluid cassette during operation of the dialysis system. 14. The dialysis system of claim 13, wherein blood flows through the fluid channel of the dialysis fluid cassette during operation of the hemodialysis system. 15. The dialysis system of claim 12, wherein the base is rigid. 16. The dialysis system of claim 12, wherein the base defines a recessed region and comprises raised rims extending outward from a planar surface of the base along edges of the recessed region, the raised rims configured to contact the flexible membrane when the flexible membrane is pressed against the base to form the fluid channel between the flexible membrane and the recessed region of the base. 17. The dialysis system of claim 12, wherein the base and the flexible membrane form a pump chamber therebetween, and the pump chamber is connected to the fluid channel such that operation of the valve member can control fluid flow to or from the pump chamber. 18. A dialysis system, comprising: a dialysis machine having a cassette compartment configured to receive a dialysis fluid cassette that comprises a plurality of fluid channels formed between a base and a flexible membrane that is attached to the base, the cassette compartment being configured such that the membrane of the dialysis fluid cassette is positioned adjacent a machine block of the dialysis machine when the dialysis fluid cassette is disposed in the cassette compartment of the dialysis machine;a plurality of valve members at least partially disposed in recesses defined by the machine block, each of the valve members being substantially aligned with a portion of one of the fluid channels of the dialysis fluid cassette when the dialysis fluid cassette is disposed in the cassette compartment of the dialysis machine, each of the valve members comprising a deformable area configured to deform outwardly when pressurized fluid is introduced into the valve member, wherein each valve member is configured so that the deformable area obstructs the aligned portion of the fluid channel of the dialysis fluid cassette when the dialysis fluid cassette is disposed in the cassette compartment of the dialysis machine and pressurized fluid is introduced into the valve member such that the plurality of valve members can be operated to control fluid flow through the dialysis fluid cassette. 19. The dialysis system of claim 18, wherein the dialysis machine further comprises a pressurized air source fluidly connected to each valve member such that pressurized air can be delivered from the pressurized air source to each valve member. 20. The dialysis system of claim 18, wherein the dialysis machine further comprises a vacuum source fluidly connected to each valve member such that vacuum pressure can be applied to each valve member by the vacuum source to move the deformable area of each valve member from an outwardly deformed position to an undeformed or an inwardly deformed position. 21. The dialysis system of claim 18, further comprising the dialysis fluid cassette. 22. The dialysis system of claim 21, wherein a plurality of pump chambers are formed between the base and the flexible membrane of the dialysis fluid cassette, and the dialysis machine comprises a plurality of pumps, each of the pumps being aligned with one of the pump chambers, and each of the fluid channels being connected to one or more of the pump chambers such that the pumps can be operated to force dialysis fluid through the fluid channels of the dialysis fluid cassette.
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