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Medical device for delivering at least one fluid from medical device

A medical device and fluid technology, applied in other medical devices, infusion sets, pressure infusion, etc., can solve problems such as leakage, achieve precise dose accuracy, improve dose accuracy, and reduce the risk of overdose administration.

Active Publication Date: 2014-10-01
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But such valves cannot prevent leakage of the medical device in use, because when the pressure acting on the fluid is maintained by the electromechanical device during use, the valve is only held at the closing pressure of the valve.
Small changes in environmental conditions such as temperature or air pressure can again easily lead to leaks

Method used

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  • Medical device for delivering at least one fluid from medical device
  • Medical device for delivering at least one fluid from medical device
  • Medical device for delivering at least one fluid from medical device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0069] Fig. 1 shows a schematic diagram of different states of an exemplary embodiment of a method according to the invention performed by an exemplary embodiment of a medical device according to the invention. The medical device 1 comprises a reservoir 2 containing a fluid 4 in the form of a medicament or pharmaceutical agent 4 . The reservoir has an outlet 6 through which the fluid 4 can be discharged. In order to increase the pressure in the fluid 4 and thus direct the fluid 4 out of the reservoir 2 , the plug 8 may apply pressure to the fluid 4 . The plug 8 is in contact with a piston 10 capable of transmitting to the plug 8 the movement of an electromechanical device 12 in the form of an electric motor. Of course, it is also possible to provide Figure 5 The gear device or piston rod described in the example. The motor 12 is controlled by a control unit 14 at a connection 16 . The control unit 14 may be, for example, a microprocessor or a dedicated motor driver. The ...

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Abstract

The invention relates to a medical device for delivering at least one fluid. The technical problem of preventing after-dripping and at the same time improving the safety and the dose accuracy of a medical device is solved by a medical device comprising a reservoir (2), a bung (8), a piston (10), an electromechanical device (12) and a control unit (14). The reservoir, the bung, the piston and the electromechanical device controlled by the control unit are arranged such that the electromechanical device are instructed to move the bung via a piston over a predetermined distance and a fluid is ejectable from the reservoir by an advancing movement of the bung. Furthermore, the control unit is configured such that, after a dwell time following the advancing movement of the piston, the piston is retractable by the electromechanical device, wherein the control unit is configured sucht that, within the dwell time, the electromechanical device is moved with a second forward movement.

Description

technical field [0001] The present invention relates to medical devices and methods for delivering at least one fluid from a medical device. More particularly, the present patent application relates to a medical device for delivering at least one pharmaceutical agent from a reservoir, in particular two pharmaceutical agents from separate reservoirs. Such pharmaceutical agents may include first and second agents. The medical device includes a dose setting mechanism for delivering a pharmaceutical agent automatically or manually by a user. [0002] The medical device may be an injector, such as a hand-held injector, especially a pen injector, ie of the type that provides administration by injection of medicament from one or more multi-dose cartridges. In particular, the invention relates to such syringes in which the user can set the dose. Background technique [0003] The pharmaceutical agent may be contained in two or more multi-dose reservoirs, containers or packages eac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/19A61M5/20
CPCA61M2005/14208A61M5/31546A61M2005/3128A61M5/31573A61M2005/31588A61M2005/3126A61M5/31583A61M2205/8212A61M5/19A61M2005/3152A61M5/14216A61M2205/3365A61M2205/502A61M5/1407A61M5/20A61M5/24
Inventor D·莫尔
Owner SANOFI AVENTIS DEUT GMBH
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