Cartridge for peristaltic pump with a flexible tube, and peristaltic pump fitted with such a cartridge
First Claim
1. A cartridge for a peristaltic pump, of the type using a flexible tube to pump fluid, comprising a housing having at one end thereof a generally cylindrical raceway, a chamber, said raceway extending around at least a portion of said chamber, a plurality of cylindrical rollers disposed in said chamber and positioned to engage a flexible tube disposed in said raceway, said rollers each having a longitudinal axis with the axes of said rollers extending parallel to one another, said chamber having a central opening for receiving drive means for engaging and moving each said roller about an axis extending through said central opening whereby a said roller will deform a portion of the flexible tube in said raceway as a said roller is moved relative to a portion of said raceway, said chamber having a relative dimension such that with the drive means removed from said central opening, said rollers will be moved radially inwardly toward said axis of said opening of said chamber by the flexible tube to enable rapid and complete sterilization of the flexible tube.
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Accused Products
Abstract
The cartridge (7) is comprised of a housing (8) which comprises, in the vicinity of each of its ends, a cylindrical raceway (16, 17) against which are capable of applying and rolling bevel gears (9) which crush the flexible tube (2) located between both raceways. The bevel gears (9) are tubular and freely mounted inside the housing (8), within the concavity of the flexible tube, this housing comprising, at least on one side, a central opening (13) with a diameter large enough to enable the driving of the bevel gears either directly from a rotary disc (5) provided with planet gears (22) capable of engaging into the tubular bevel gears or from a shaft internally engaged between the tubular bevel gears.
112 Citations
9 Claims
- 1. A cartridge for a peristaltic pump, of the type using a flexible tube to pump fluid, comprising a housing having at one end thereof a generally cylindrical raceway, a chamber, said raceway extending around at least a portion of said chamber, a plurality of cylindrical rollers disposed in said chamber and positioned to engage a flexible tube disposed in said raceway, said rollers each having a longitudinal axis with the axes of said rollers extending parallel to one another, said chamber having a central opening for receiving drive means for engaging and moving each said roller about an axis extending through said central opening whereby a said roller will deform a portion of the flexible tube in said raceway as a said roller is moved relative to a portion of said raceway, said chamber having a relative dimension such that with the drive means removed from said central opening, said rollers will be moved radially inwardly toward said axis of said opening of said chamber by the flexible tube to enable rapid and complete sterilization of the flexible tube.
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2. A cartridge for a peristaltic pump, of the type using a flexible tube to pump fluid, comprising a housing having at one end thereof a generally cylindrical raceway, a chamber, said raceway extending around at least a portion of said chamber, a plurality of cylindrical rollers disposed in said chamber and positioned to engage a flexible tube disposed in said raceway, each said roller being a hollow tube and freely carried in said chamber of said housing, said chamber having a central opening for receiving drive means, said drive means comprising a central roller shaft mounted on a drive disc, said drive disc including a plurality of planetary shafts each for drivingly engaging a said hollow tube, said chamber having a dimension such that when said drive means is inserted in said central opening, said roller shaft will force said hollow tubes apart and when said drive means is removed from said opening of said chamber said hollow tubes will be moved radially inwardly toward said axis of said opening by said flexible tube to enable rapid and complete sterilization of the flexible tube.
Specification