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Caps for injection devices

A technology of injection device and injection barrel, which is applied in the cap field of injection device, and can solve problems such as cap removal

Active Publication Date: 2021-11-30
SANOFI AVENTIS DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the force required to hold the cap and body together can make it difficult for the patient to intentionally remove the cap from the body prior to injection, especially if the patient is elderly or infirm

Method used

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  • Caps for injection devices
  • Caps for injection devices
  • Caps for injection devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040]A drug delivery device as described herein may be configured to inject a medicament into a patient. For example, delivery can be subcutaneous, intramuscular or intravenous. Such devices may be operated by the patient or a caregiver, such as a nurse or physician, and may include various types of safety syringes, pen injectors or auto-injectors. Devices may include cartridge-based systems that require puncture of a sealed ampoule prior to use. The volume of medicament delivered with these various devices can range from about 0.5 ml to about 2 ml. Yet another device may include a large volume device ("LVD") or patch pump configured to adhere to the patient's skin for a period of time (e.g., about 5, 15, 30, 60, or 120 minutes) To deliver "large" volumes of medicament (typically about 2ml to about 10ml).

[0041] In combination with specific agents, the presently described devices can also be tailored to operate within required specifications. For example, the device can...

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PUM

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Abstract

The invention relates to a cap (21) of an injection device (20). The cap (21) comprises a needle shield (22) and a catheter (31). The needle shield (22) includes a body (24) having a recess (25) for receiving a portion of a needle barrel (18). The conduit (31 ) is movable from an initial position in which a part of the body (24) is located between the recess (25) and the conduit (31 ) to a cap removal position in which In the cap-removed position, the conduit (31 ) extends through the portion of the body (24) to be in fluid communication with the recess (25) to allow gas to enter the recess (25).

Description

technical field [0001] The present invention relates to a cap for an injection device, and to an injection device comprising said cap. Background technique [0002] Injection devices, such as auto-injectors, are known in the art for dispensing medicaments to injection sites in patients. Such injection devices typically comprise a body and a cap. A needle barrel is located in the body. A cap is removably attached to the body to shield the needle of the needle syringe. To dispense the medicament, the cap is first removed from the body to expose the needle. The needle is then inserted into the patient at the injection site to dispense the medication. [0003] It is important to retain the cap on the body with sufficient force to ensure that the cap cannot be accidentally removed from the body during transport and storage of the injection device. This ensures that the needle remains sterile and also prevents injury from sharp needles. However, the force required to hold th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32
CPCA61M5/3202A61M5/3204
Inventor P·诺伯M·罗D·蒂森
Owner SANOFI AVENTIS DEUT GMBH