Reciprocation pump and a dialysis apparatus equipped with the reciprocation pump
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F04B-023/06
A61M-001/16
A61M-001/14
F04B-003/00
F04B-009/02
F04B-043/02
F04B-053/02
F04B-013/02
출원번호
US-0479687
(2012-05-24)
등록번호
US-9885348
(2018-02-06)
우선권정보
JP-2009-266395 (2009-11-24)
발명자
/ 주소
Suzuki, Hiroaki
출원인 / 주소
Nikkiso Company Limited
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A reciprocation pump has a supply liquid-side sub-pumping chamber arranged adjacent to the supply liquid-side pumping chamber at an external side. A waste liquid-side sub-pumping chamber is arranged adjacent to the waste liquid-side pumping chamber at an external side. A rod extends through the supp
A reciprocation pump has a supply liquid-side sub-pumping chamber arranged adjacent to the supply liquid-side pumping chamber at an external side. A waste liquid-side sub-pumping chamber is arranged adjacent to the waste liquid-side pumping chamber at an external side. A rod extends through the supply liquid-side sub-pumping chamber, the supply liquid-side pumping chamber, the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber. The rod is connected to the reciprocation mechanism and the driving source to transmit a driving force of the driving source to the reciprocation mechanism. Sealing members are arranged, respectively, in walls through which the rod extends to partition the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber as well as the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber.
대표청구항▼
1. A reciprocation pump comprising: a supply liquid-side pumping chamber for supplying a liquid from a source to an objective apparatus;a waste liquid-side pumping chamber for discharging a waste liquid discharged from the objective apparatus to the outside;a reciprocation mechanism reciprocating be
1. A reciprocation pump comprising: a supply liquid-side pumping chamber for supplying a liquid from a source to an objective apparatus;a waste liquid-side pumping chamber for discharging a waste liquid discharged from the objective apparatus to the outside;a reciprocation mechanism reciprocating between the supply liquid-side pumping chamber and the waste liquid-side pumping chamber, the reciprocating motion of the reciprocation mechanism performing suction and discharge of the liquid to and from the supply liquid-side pumping chamber as well as suction and discharge of the waste liquid to and from the waste liquid-side pumping chamber;a driving source for driving the reciprocation mechanism;the reciprocation pump with the supply liquid-side pumping chamber and the waste liquid-side pumping chamber adapted to supply the liquid from the source to the objective apparatus and to discharge the waste liquid from the objective apparatus to the outside;a supply liquid-side sub-pumping chamber arranged adjacent to the supply liquid-side pumping chamber at an external side wherein liquid passes in series between the supply liquid-side chamber and the supply liquid-side sub-pumping chamber and into the objective apparatus;a one way check valve between the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber;a waste liquid-side sub-pumping chamber arranged adjacent to the waste liquid-side pumping chamber at an external side wherein waste liquid passes in series between the waste liquid-side sub-pumping chamber and the waste liquid-side pumping chamber to discharge to the outside;a one way check valve between the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber;a rod extending through the supply liquid-side sub-pumping chamber, the supply liquid-side pumping chamber, the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber, the rod connected to the reciprocation mechanism and the driving source to transmit a driving force of the driving source to the reciprocation mechanism;diaphragms, respectively, mounted on the distal end and the proximal end of the rod, the diaphragms form the supply liquid-side sub-pumping chamber and the waste liquid-side sub-pumping chamber, respectively, the diaphragms secured in a sealed manner by a peripheral edge fit into the reciprocating pump, the diaphragms displaced by the rod to vary the volume in their respective sub-pumping chamber; andsealing members arranged, respectively, in walls through which the rod extends to partition the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber as well as the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber. 2. The reciprocation pump of claim 1, wherein the liquid is supplied to the objective apparatus through both the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber, and the waste liquid is discharged to the outside through both the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber. 3. The reciprocation pump of claim 1, wherein the reciprocation mechanism comprises a plunger formed on the rod to form the supply liquid-side pumping chamber and the waste liquid-side pumping chamber, and a central sealing member is arranged between the supply liquid-side pumping chamber and the waste liquid-side pumping chamber at a position substantially at a reciprocating center of the plunger to seal the supply liquid-side pumping chamber from the waste liquid-side pumping chamber. 4. The reciprocation pump of claim 1, wherein the reciprocation mechanism comprises a diaphragm mounted on the rod to form the supply liquid-side pumping chamber and the waste liquid-side pumping chamber. 5. The reciprocation pump of claim 1, wherein the objective apparatus is a blood purification apparatus and the liquid is dialysate. 6. A dialysis apparatus equipped with the reciprocation pump of claim 5. 7. A reciprocation pump comprising: a housing;a supply liquid-side pumping chamber for supplying a liquid from a source to an objective apparatus, the supply liquid-side pumping chamber in the housing;a waste liquid-side pumping chamber for discharging a waste liquid discharged from the objective apparatus to the outside, the waste liquid-side pumping chamber in the housing;a reciprocation mechanism reciprocating between the supply liquid-side pumping chamber and the waste liquid-side pumping chamber in the housing, a member on the reciprocation mechanism in the housing separating the supply liquid side pumping chamber from the waste liquid side pumping chamber, the reciprocating motion of the reciprocation mechanism, via the member, performing suction and discharge of the liquid to and from the supply liquid-side pumping chamber as well as suction and discharge of the waste liquid to and from the waste liquid-side pumping chamber;a driving source for driving the reciprocation mechanism;the reciprocation pump with the supply liquid-side pumping chamber and the waste liquid-side pumping chamber adapted to supply the liquid from the source to the objective apparatus and to discharge the waste liquid from the objective apparatus to the outside;a supply liquid-side sub-pumping chamber arranged in series with and adjacent to the supply liquid-side pumping chamber at an external side;a waste liquid-side sub-pumping chamber arranged in series with and adjacent to the waste liquid-side sub-pumping chamber at an external side;a one way check valve between the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber;a one way check valve between the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber;a rod extending through the supply liquid-side sub-pumping chamber, the supply liquid-side pumping chamber, the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber, the rod connected to the reciprocation mechanism and the driving source to transmit a driving force of the driving source to the reciprocation mechanism;diaphragms, respectively, mounted on the distal end and the proximal end of the rod, the diaphragms form the supply liquid-side sub-pumping chamber and the waste liquid-side sub-pumping chamber, respectively, the diaphragms secured in a sealed manner by a peripheral edge fit into the reciprocating pump, the diaphragms displaced by the rod to vary the volume in their respective sub-pumping chamber; andsealing members arranged, respectively, in walls through which the rod extends to partition the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber as well as the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber. 8. The reciprocation pump of claim 7, wherein the reciprocation member comprises a plunger formed on the rod to form the supply liquid-side pumping chamber and the waste liquid-side pumping chamber, and a central sealing member is arranged between the supply liquid-side pumping chamber and the waste liquid-side pumping chamber at a position substantially at a reciprocating center of the plunger to seal the supply liquid-side pumping chamber from the waste liquid-side pumping chamber.
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