Tube pump

Inactive Publication Date: 2005-03-31
JAPAN SERVO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] A first object of the present invention is to provide a tube pump that can increase structural str

Problems solved by technology

Since the tube pump sends liquid by deforming the elastic tube, the tube tends to deteriorate, which requires frequent exchange of the tube.
However, since the elastic tube is pinched between one roller and the internal surface of the tube pump, it takes much expense in time and effort to exchange the tube even if the rotor portion stops.
However, since the tube pump disclosed in the above publication divides the semicircular internal surface to which large pressure is applied by the rotation of the rotor portion in operation into two portions, it is difficult to keep structural strength.
Therefore, the movable and fixed casings are formed from metal, which increases the cost of the tube pump in comparison wi

Method used

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Examples

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Embodiment Construction

[0034] Hereinafter, a tube pump of an embodiment according to the present invention will be described with reference to the drawings. Initially, an example of the use of the tube pump of the embodiment will be described according to FIG. 9.

[0035]FIG. 9 shows the entire construction of artificial dialysis equipment 2 that employs the tube pump 1 of the embodiment as a blood pump. The artificial dialysis equipment 2 is provided with the tube pump 1, a dialyzer 3, first and second chambers 4 and 5. The equipment 2 is incorporated in an extracorporeal circulation path of a patient P. In addition, the reference F in FIG. 9 indicates a cover sheet put on the body of the patient P.

[0036] Blood collected from the arm of the patient P is drawn by the tube pump 1 through the tube and is pressurized to send to the first chamber 4. The blood that is temporally accumulated in the first chamber 4 is sent to the dialyzer 3. The dialyzer 3 dialyzes and filters the blood with using a dialyzate sol...

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PUM

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Abstract

The tube pump includes a base that holds a drive shaft; a rotor portion that rotates with the driving shaft, the rotor portion having a pair of rollers; a casing having a U-shaped internal surface along which an elastic tube is arranged, the casing being mounted on the base so that the casing can slide with respect to the base in a direction parallel to the linear portions; a cover that is rotatably mounted on the casing; a moving mechanism including a rack that is formed on the base and a pinion that is fixed to the rotation shaft of the cover. The moving mechanism moves the casing to the operating position where the roller deforms the elastic tube when the cover closes, and the moving mechanism moves the casing to the exchange position where the roller comes apart from the elastic tube when the cover opens.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a tube pump that deforms an elastic tube by rotating rollers to send out liquid in the elastic tube. Especially the present invention relates to a tube pump mounted on artificial dialysis equipment etc. that enables easy attachment and removal of the elastic tube. [0003] 2. Prior Art [0004] This kind of tube pump is disclosed in Japanese unexamined patent publication No. Hei 6-218042, for example. The tube pump disclosed in the publication is provided with a casing body having a semicircular internal surface, a drive shaft located at the center of the semi-circle and a rotor portion that rotates with the drive shaft. The rotor portion has a pair of rollers whose rotation axes are decentered from the drive shaft. For operation, arrange an elastic tube along the internal surface of the casing body and rotate the rotor portion to deform the elastic tube with compression between the inte...

Claims

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Application Information

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IPC IPC(8): F04C5/00A61M1/10F04B43/12
CPCF04B43/1284A61M1/1037A61M60/113A61M60/279A61M60/37
Inventor SHIBASAKI, MASANORI
Owner JAPAN SERVO CO LTD
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