IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0706735
(2007-02-15)
|
등록번호 |
US-7472805
(2009-01-06)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
7 |
초록
▼
A disposable pump cartridge for use in conjunction with a pump driver characterized in the disposable pump unit containing a pair of piston pumps and inlet and outlet valves positioned at one end of each piston. The piston pump has a pair of pistons arranged for reciprocal motion and which are retai
A disposable pump cartridge for use in conjunction with a pump driver characterized in the disposable pump unit containing a pair of piston pumps and inlet and outlet valves positioned at one end of each piston. The piston pump has a pair of pistons arranged for reciprocal motion and which are retained by a retainer adjacent the inlet and outlet valves during transit.
대표청구항
▼
What is claimed is: 1. A disposable pump comprising: a pump section having two pump barrels each having a piston therein, said pistons having means for releasably connecting said pistons to a non-disposable pump drive for driving said pistons of said disposable pump cartridge; and a valving chamber
What is claimed is: 1. A disposable pump comprising: a pump section having two pump barrels each having a piston therein, said pistons having means for releasably connecting said pistons to a non-disposable pump drive for driving said pistons of said disposable pump cartridge; and a valving chamber having a fluid inlet for connection to a source of fluid to be pumped, a fluid outlet through which pumped fluid is expelled from said pump cartridge, a pump inlet chamber intermediate and connecting said fluid inlet to said pump barrels via inlet valves thereof, and a pump outlet chamber intermediate and connecting said pump barrels to said fluid outlet via outlet valves thereof, wherein said pump section and said valving chamber comprise a single unitary cartridge. 2. A disposable pump cartridge according to claim 1, wherein said valving chamber further comprises a diluent inlet to said pump outlet chamber downstream of said outlet valves and upstream of said pump outlet such that, in use, a diluent is introduced into the fluid being pumped prior to the fluid issuing from said pump outlet. 3. A disposable pump cartridge according to claim 2, wherein said valving chamber further comprises a mixing means in said pump outlet chamber between said diluent inlet and said pump outlet through which the fluid being pumped and the diluent pass and mix therein, such that a substantially homogeneous mixture issues from said pump outlet. 4. A disposable pump cartridge according to claim 1, wherein each of said pump barrels includes retention means arranged to retain each said piston in a position adjacent each said piston's associated inlet and outlet valves during transit. 5. A disposable pump cartridge according to claim 1 wherein said outlet valves are positioned in end faces of said pump barrels. 6. A disposable pump cartridge according to claim 5 wherein each said outlet valve comprises a check valve. 7. A disposable pump cartridge according to claim 1 wherein said inlet and outlet valves are in end faces of said pump barrels and in use of said pump cartridge said inlet valves are positioned below said outlet valves. 8. A disposable pump cartridge according to claim 7 wherein each said inlet valve comprises a check valve. 9. A disposable pump cartridge for use with a non-disposable pump drive, the cartridge comprising: two pump barrels each having an associated piston therein, said pistons having means for connecting them to a drive means for driving the pistons of the disposable pump cartridge, a fluid inlet for connection to a source of fluid to be pumped, said fluid inlet leading to two inlet valves each leading into one of the two barrels, two outlet valves each leading from one of said two barrels to a pump outlet, and retention means arranged to retain the pistons in a position adjacent the inlet and outlet valves during transit, wherein the retention means comprises one or more protrusions on one of the barrel and piston of each associated barrel and piston which retain the piston in the position adjacent the inlet and outlet valves. 10. A disposable pump cartridge according to claim 9, wherein the protrusions are on inner surfaces of the barrels and the retention means further comprises grooves on the piston which interact with the protrusions. 11. A disposable pump cartridge according to claim 9, wherein the retention means further comprises a recess in a face of each piston and the protrusions are on end faces of the barrels containing the inlet and outlet valves and interface with the recesses in the faces of the pistons. 12. A disposable pump cartridge according to claim 9, wherein each said barrel is a plastics moulding and the protrusions are integral to that moulding. 13. A disposable pump cartridge according to claim 9, wherein the retention means further comprises a groove on the inner surface of each barrel which interact with one or more protrusions on the pistons to retain the pistons in the position adjacent the inlet and outlet valves. 14. A disposable pump cartridge according to claim 13, wherein the piston is a plastics molding and the protrusion is integral to the plastics molding. 15. A unitary disposable pump cartridge for use with a non-disposable pump drive, said cartridge comprising: two pump barrels each having a piston therein, said pistons having means for releasably connecting said pistons to the non-disposable pump drive for driving said pistons of said disposable pump cartridge, said releasably connecting means accommodating convenient attachment of said pistons to the non-disposable pump drive for use of said disposable pump cartridge in pumping fluid from a supply of the fluid, and convenient detachment of said pistons from the non-disposable pump drive for replacement of said disposable pump cartridge with another disposable pump cartridge upon replacement of the supply of the fluid, a fluid inlet for connection to a source of fluid to be pumped, said fluid inlet leading to two inlet valves each leading into one of said two barrels, and two outlet valves each leading from one of said two barrels to a pump outlet. 16. A unitary disposable pump cartridge for use with a non-disposable pump drive, said cartridge comprising: two pump barrels each having a piston therein, said pistons having means for releasably connecting said pistons to the non-disposable pump drive for driving said pistons of said disposable pump cartridge, said releasably connecting means accommodating convenient attachment of said pistons to the non-disposable pump drive for use of said disposable pump cartridge in pumping fluid from a supply of the fluid, and convenient detachment of said pistons from the non-disposable pump drive for replacement of said disposable pump cartridge with another disposable pump cartridge upon replacement of the supply of the fluid, a fluid inlet for connection to a source of fluid to be pumped, said fluid inlet leading to two inlet valves each leading into one of said two barrels, and two outlet valves each leading from one of said two barrels to a pump outlet, wherein said pump cartridge substantially comprises plastics injection molding. 17. In combination, a fluid container and a disposable pump cartridge coupled to said fluid container for pumping fluid from said container, said disposable pump cartridge comprising a fluid inlet coupled to fluid in said container, a fluid outlet, two pump barrels each having a piston therein, two inlet valves fluid coupled to said fluid inlet and each leading to one of said two barrels, two outlet valves fluid coupled to said fluid outlet and each leading from one of said two barrels, said pistons having means for releasably connecting said pistons to a non-disposable pump drive for driving said pistons of said disposable pump cartridge, said releasably connecting means accommodating convenient attachment of said pistons to the non-disposable pump drive for operation of said disposable pump cartridge to pump fluid from said container, and convenient detachment of said pistons from the non-disposable pump drive for discard of said disposable pump cartridge and container upon exhaustion of the fluid in said container and replacement of the same with another disposable pump cartridge and fluid container.
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