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automatic injection device

An automatic injection and syringe technology, applied in the direction of automatic injectors, syringes, hypodermic injection equipment, etc., can solve problems such as impact, and achieve the effects of reducing production costs, improving reliability, and reducing the number of parts

Active Publication Date: 2016-04-06
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can result in a large shock that the user feels when the needle is inserted into the skin, and a large force that the user feels when the injection is triggered

Method used

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Experimental program
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Embodiment Construction

[0153] The term "slope joint" in this specification is a joint between two parts at least one of which has a slope that engages the other so that when the two parts are pushed against each other in the axial direction One of the two parts deflects sideways when in contact with each other, assuming that this part is not prevented from deflecting sideways.

[0154] Figure 1A and 1B Two longitudinal sections of the automatic injection device 1 are shown in different sections, which are rotated by approximately 90° relative to each other, the starting state of the automatic injection device 1 before the start of the injection. The automatic injection device 1 comprises a housing 2 . In the following, the frame 2 is generally considered to be fixed in position, so the movements of other components are described relative to the frame 2 . A syringe 3 with a hollow injection needle 4 , for example a Hypak syringe, is arranged on the proximal part of the automatic injection device 1...

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Abstract

The invention relates to an automatic injection device (1) for delivering doses of a liquid medicament (M), comprising: - a tubular frame (2) telescoping in an elongated frame (12); - a carrier subassembly, Comprising a tubular carrier (7) slidably arranged partly inside the frame (2) and inside the casing (12), the carrier (7) is adapted to accommodate a syringe (3) with a hollow injection needle (4) , a drive spring (8), and a plunger (9) for delivering the load of the drive spring (8) to the occluder (6) of the syringe (3), wherein the syringe (3) is lockable for use with the carrier (7) Combined axial translation; - control spring (19) arranged around the carrier (7); - needle insertion control mechanism (24) for coupling the control spring (19) proximally to the carrier (7) to advance it for needle insertion or coupling to the frame (2), wherein the needle insertion control mechanism (24) comprises a first collar (20) biased in the proximal direction (P) by a control spring, at least one of which The fifth clip (2.10) is arranged on one of the first collar (20) or the frame (2), initially adjacent to the other of the first collar (20) or the frame (2) block (20.7), wherein a ramped engagement between the fifth clip (2.10) and the carrier (7) is provided for outwardly deflecting the fifth clip ( 2.10), wherein the outward deflection of the fifth clip (2.10) and the translation of the carrier (7) in the proximal direction (P) are initially prevented by the casing (12) adjoining the fifth clip (2.10) externally, wherein the housing (12) is at least initially biased in the distal direction (D), wherein the housing (12) is arranged to translate relative to the frame (2) in the proximal direction (P) against the bias to an advanced position , thereby translating the second window (12.8) in the housing (12) outwards behind the fifth clip (2.10), thereby allowing an outward deflection to disengage the fifth clip (2.10) from the block (20.7) And allowing the first collar (20) to abut against the carrier (7) and push it under the load of the control spring (19).

Description

technical field [0001] The invention relates to an automatic injection device for administering doses of liquid medicaments according to the preamble of claim 1 . Background technique [0002] Administering injectables presents many risks and challenges, both psychologically and physically, for users and healthcare professionals. [0003] Injection devices (ie, devices capable of delivering medicament from a medicament container) typically fall into two types - manual devices and automatic injection devices. [0004] In manual devices, the user must provide mechanical energy to drive fluid through the needle. This is typically done with some form of button / plunger which the user must continuously depress during an injection. This solution has a number of drawbacks for the user. If the user stops pressing the button / plunger, the injection will also stop. This means that if the device is not used properly (ie the plunger is not fully depressed to its end position), the use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/20A61M5/32
CPCA61M2005/2073A61M2005/206A61M5/31501A61M5/3202A61M5/3204A61M5/3257A61M5/326A61M5/46A61M5/5086A61M2005/3247F04C2270/0421A61M5/2033A61M2005/208A61M2005/2013A61M2205/581A61M5/3157A61M2205/582Y10T403/32501A61M5/20A61M2205/583A61M5/2429A61M5/31511A61M5/3158
Inventor S.F.布里雷顿T.肯普R.伯内尔M.埃克曼
Owner SANOFI AVENTIS DEUT GMBH
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