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Medication injection device with automatic needle retraction following injection

一种注射装置、药物的技术，应用在注射器、自动注射器、皮下注射器械等方向，能够解决装置使用不方便、体积庞大等问题，达到易于操作和使用的效果

Inactive Publication Date: 2018-11-09
ELI LILLY & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some automatic drug injection devices are bulky, making the device inconvenient to use

Method used

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  • Medication injection device with automatic needle retraction following injection
  • Medication injection device with automatic needle retraction following injection
  • Medication injection device with automatic needle retraction following injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] now refer to figure 1 with figure 2 , shows two views of an automatic drug injection device, generally designated 20 . When the trigger assembly of the device 20 is operated, the needled syringe of the device 20 is automatically driven downwards so that its injection needle protrudes beyond the bottom end 27 of the device housing to penetrate the user. The device then proceeds to inject automatically, ie, without further action by the user, the drug contents of the syringe pass through the needle, after which the syringe is automatically retracted, causing the needle to return into the housing.

[0030] The device 20 includes an outer housing 22 in which the working components of the device are operatively disposed. The outer housing 22 is formed from an upper portion 24 and a lower portion 26 . The housing upper part 24 is formed by two identical, cooperating half-shells 28, 28', which are fixedly joined together. The housing lower part 26 is also formed from two ...

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PUM

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Abstract

An automatic medication injection device comprises a driver (95), a retractor (190, 230) and a blocking member (180). Upon device triggering the driver is shifted proximally to move a device syringe,expel medication from the syringe0, and then to disengage itself from the syringe plunger. The driver and the blocking member have a complementary camming configuration by which the blocking member, during the driver shifting, is automatically rotated from a first rotational orientation to a second rotational orientation. The blocking member blocks retraction of the retractor when disposed in thefirst rotational orientation, and permits retraction of the retractor when disposed in the second rotational orientation, which retractor retraction withdraws the device syringe from an injecting position to a retracted position.

Description

technical field [0001] The present invention relates to a drug injection device, and more particularly to an automatic drug injection device that automatically retracts a needle after injection. Background technique [0002] Patients with many different medical conditions often have to inject medications. Various devices have been proposed to facilitate these injections. One type of device is an automatic drug injection device. Devices of this type typically include a trigger assembly that, when operated by the user, causes the device to automatically insert the needle of the syringe into the user, the needle being disposed within the device housing prior to triggering, and the device then A dose of medicine is automatically injected through an inserted needle. [0003] While potentially useful, some automatic drug injection devices do suffer from one or more disadvantages. For example, some known automatic drug injection devices require the user to pull the device away ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/20
CPCA61M5/326A61M2005/206A61M2005/2073A61M5/2033A61M2005/2013
Inventor N·T·冈萨雷斯G·A·马塞尔曼L·J·尼尔森D·E·王
Owner ELI LILLY & CO
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