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Injecting systems

A technology of injection system and syringe, applied in the field of injection system, can solve problems such as failure to monitor automatic jelly injection and failure to detect faults in time

Inactive Publication Date: 2004-02-04
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that the failure cannot be detected in time, because the automatic colloid injection of the patient cannot usually be monitored

Method used

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Examples

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Embodiment Construction

[0031] Figure 1 depicts an injection system 1 for the controlled injection of a substance 9, preferably a solvent for X-ray contrast, for radiological examinations. The injection system comprises a hand-operated injector 3 and a control unit 4 . The injector 3 is an injection syringe composed of a plunger 5 and a sleeve 7 .

[0032] The substance 9 to be injected is located in a volume (reservoir) formed by the plunger and the sleeve of the syringe 3 . The substance is injected intravenously through catheter 10 into patient 11 by pushing plunger 5 into sleeve 7 . The position of the plunger 5 thus determines the filling state of the cavity. A switch 12 is respectively fixed on the two travel points of the sleeve 7 of the syringe 3, and the switches are respectively connected with the control unit 4, and notify the control unit 4 that the plunger 5 has reached one of the two travel points and the cavity corresponding filling conditions. The switch 12 may for example be a ma...

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Abstract

An injector for radiation testing (1, 1A to 1C) equipped with manual operation type syringe (3, 3A, 3B or 3C) for manually infusing materials (9, 9B, 9C) to a patient (11) under control has an impaction condition detecting means (4, 12, 4A, 21, 17C and 31) for detecting the impaction conditions of a container (31) filled up with the materials (9, 9B, 9C) to be infused. In order to detect the impaction conditions, either directly measuring the volume of materials (9, 9B, 9C) occupied within the container (31) or indirectly measuring the position of the constituent part (5) of the injector (1, 1A to 1C) is possible and the position of the constituent part is correlated with the occupied volume.

Description

technical field [0001] The invention relates to an injection system for radiological examination using a hand-operated injector. Background technique [0002] In radiological examinations, it is often necessary to supply high-contrast media soluble in liquids. This so-called colloid injection (bolus injection) makes it possible to obtain a high contrast in the imaging of body tissue with a radiological examination device. In addition to improving the contrast, indications regarding, for example, disturbances of the blood-tissue boundaries can be obtained from the temporal sequence of the distribution of the high-contrast medium in the body tissue at a given time of colloid injection. The basis for the reproducibility and high quality of this technique is the timing, ie the timing from injection of the gelatin to the start of the measurement with the radiological examination device. In most cases, colloid injections are done manually by doctors using a syringe. The timing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/28A61B5/055A61B6/03A61M3/00A61M5/00A61M5/168
CPCA61M5/007A61M2205/3306A61M5/1684
Inventor 雷纳·库思
Owner SIEMENS AG
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