SYRINGE DRIVE DEVICE AND SYRINGE DRIVE METHOD
1 Assignment
0 Petitions
Accused Products
Abstract
A syringe drive device 11 includes a fixing section 15 fixing an outer tube 14, a movable holder 16 holding a plunger 13, and a drive section 42 driving the holder 16 along an axis of the plunger to push and pull the plunger with respect to the outer tube 14. An internal pressure detector 18 has a positive pressure detection switch 63 detecting an internal pressure of a syringe 12. A determination section 41 determines issue of an alert when the holder 16 is stopped and the positive pressure detection switch 63 is ON. A display section 19 is lit to indicate the alert when the determination section 41 determines issue of the alert.
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Citations
13 Claims
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1-9. -9. (canceled)
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10. A method of driving a syringe that includes an outer tube fixing portion fixing an outer tube of the syringe, a holder holding a plunger of the syringe, and a drive portion driving the holder along an axis of the plunger to push and pull the plunger with respect to the outer tube, the method comprising:
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detecting whether the holder is driven or stopped; detecting an internal pressure of the syringe when the holder is stopped; and issuing an alert when the internal pressure of the syringe is not less than an alert value;
whereinwhether or not to issue the alert is determined after elapse of a predetermined standby period of time from the detection of the stopped state.
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11. A method of driving a syringe that includes an outer tube fixing portion fixing an outer tube of the syringe, a holder holding a plunger of the syringe, and a drive portion driving the holder along an axis of the plunger to push and pull the plunger with respect to the outer tube, the method comprising:
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detecting whether the holder is driven or stopped; detecting an internal pressure of the syringe when the holder is stopped; and issuing an alert when the internal pressure of the syringe is not less than an alert value;
whereinwhether or not to issue the alert is determined again after elapse of a predetermined standby period of time from the issue of the alert, and, when the internal pressure of the syringe is not less than the alert value in the repeated determination, the drive portion drives and moves the holder so as to pull the plunger out of the outer tube until the internal pressure of the syringe is reduced to be less than the alert value. - View Dependent Claims (12, 13)
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Specification