Injection device with automatic substance combination feature
An injection device, a technology of substances, applied in the direction of syringes, infusion sets, etc., can solve problems such as uncertainty, unsuitability for injection, extended waiting period, etc.
Active Publication Date: 2019-02-26
BECTON DICKINSON & CO
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- Description
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Problems solved by technology
Foaming medicaments are typically not suitable for injection, and thus, the manual reconstitution process presents the possibility of requiring extended waiting periods before administering a specific dose
Additionally, there may be uncertainty as to whether the substance is ready for injection
[0007] Another potential problem associated with manually actuated pen injectors is that the restitution process may be incomplete
Without proper controls, in some cases it is possible that individuals will not be able to fully reconstitute lyophilized or powdered dosage forms
In such cases, the efficacy of the incompletely reconstituted agent may be reduced or eliminated
Method used
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Embodiment Construction
[0031] Reference will now be made in detail to the embodiments of the present invention. Examples of these embodiments are shown in the accompanying drawings, in which corresponding reference numerals refer to corresponding elements throughout. The description of these embodiments explains the present invention by referring to the drawings.
[0032] figure 1 with 2 The diagram shows a pen-type injection device or syringe 20 used to automatically combine two substances. The syringe 20 has a body 24 which is adapted to fit in the hand of an individual and includes a lower body 28 and an upper body 32. The syringe 20 includes a distal, anterior, or anterior end 36 and a proximal, posterior, or posterior end 40. The viewing window 44 allows the individual to see the contents of the syringe before or after the injection. The example shown is a device used to deliver a single dose and is intended to be a single use device. Additionally, in the example shown, the syringe 20 is used f...
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The invention discloses an injection device with an automatic substance mixing characteristic. The injection device comprises a main body and a cylinder, wherein the cylinder is moveably arranged in the main body and comprises a first cavity for containing a first substance, a second cavity for containing a second substance, a first plug moveably arranged in the cylinder to isolate the first cavity from the second cavity, and a second plug moveably arranged in the cylinder to limit the end part of the second cavity; the device further comprises a needle hub seat which is moveably arranged in the main body; threads are arranged on the needle hub seat and used for connecting a pen-shaped needle with the injection device; the device further comprises a plunger moveably arranged in the main body, an offsetting component, a sleeve and an actuating button; the sleeve is offset by the offsetting component and transfers the offsetting force to the plunger; the actuating button moves along the radial direction relative to the main body, in order to selectively release the sleeve and drive the plunger to automatically mix the first substance with the second substance.
Description
[0001] The present invention is the division of an invention patent application whose international application date is May 19, 2011, the international application number is PCT / US2011 / 000897, the Chinese national application number is 201180071885.9, and the invention title is "injection device with automatic substance combination feature". Case application. Technical field [0002] Generally speaking, the present invention relates to an injection device used to dispense medicaments. More specifically, the present invention relates to a pen-type injection device that has an automatic feature that is used to perform an injection. Before combining at least two substances, for example, to reconstitute the lyophilized medicament. Background technique [0003] There are various syringes and injection devices on the market. A popular type of syringe is sometimes called a pen-type syringe because the body of the syringe is like a pen for writing. It has been proven that pen-type syrin...
Claims
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IPC IPC(8): A61M5/19A61M5/31
CPCA61M5/19A61M5/31A61M2005/3114
Inventor R·克罗嫩贝格
Owner BECTON DICKINSON & CO