Self-injection device

A technology of injection needle and delivery device, which is applied in the safety mechanism of patch-like infusion or self-injection device, in the field of patch-like, self-contained substance infusion or self-injection device, and can solve problems such as failure and patient discomfort

Inactive Publication Date: 2012-10-24
BECTON DICKINSON & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second modality includes infusion pump therapy, which requires purchasing an expensive pump that lasts about three years
Unfortunately, however, many of these devices suffer from disadvantages including: patient discomfort (due to the gauge and / or length of the injection needle used), differences between the substance delivered and the materials used in the construction of the infusion set. compatibility and interaction between devices, and possible failure in case of incorrect actuation by the patient (e.g. "wet" injection due to premature actuation of the device)
Difficulties have also been encountered in manufacturing and in controlling the penetration depth of the needle, especially when short and / or fine gauge injection needles are used
There have also been ongoing concerns about the potential for needle stick injuries to those in contact with the devices used

Method used

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Examples

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Embodiment Construction

[0039] Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments illustrate the invention by referring to the figures.

[0040] Embodiments of the invention described below can be used as a convenient, patch-like infusion or self-injection device 100 to deliver to a patient a predicted dose of a substance, such as a liquid drug or medicament, over a period of time or all at once. The device is preferably supplied to the end user in a pre-filled state, ie the drug or medicament is already in the reservoir of the device. Although the patch-like infusion or self-injection device 100 (e.g., figure 1 shown in ) can be employed by the patient and / or caregiver, but for convenience the user of the device is hereinafter referred to as the "patient". Additionally, for convenience, terms such as "vertical" and "horizontal" ...

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PUM

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Abstract

A drug delivery device (500), including a body (504) having a needle opening (508) and a reservoir (164, 176) disposed therein for containing a medicament, and an injection needle (152) for penetrating the skin of a patient, the needle (152) providing a path for the medicament between the reservoir (164, 176) and the patient, and selectively protruding from the body (504) through the needle opening (508). The device (500) also includes safety means (576, 548, 552, 532, 512) for automatically retracting the needle (152) within the body (504) and covering the needle opening (508) upon removal of the device (500) from the patient.

Description

technical field [0001] The present invention generally relates to a substance delivery device having improved patient convenience and ease of use, and an improved safety mechanism. The present invention also generally relates to patch-like, self-contained substance infusion or self-injection devices that can be used to deliver a variety of substances or drugs to a patient. More specifically, the present invention relates to safety mechanisms for patch-like infusion or self-injection devices. Background technique [0002] Many people, such as those suffering from conditions such as diabetes, use some form of infusion therapy, such as daily insulin infusions, to maintain tight control of their blood sugar levels. Currently, in the insulin infusion therapy example, there are two main modes of daily insulin therapy. The first mode includes syringes and insulin pens. These devices are simple and inexpensive to use, but they require needle pricks with each injection, typically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M31/00
CPCA61M5/326A61M2005/1426A61M5/1454A61M37/0015A61M2005/325A61M2005/3284A61M2005/14252A61M2037/0023A61M5/14248
Inventor B·彼得森R·桑德埃格C·辛德里奇
Owner BECTON DICKINSON & CO
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