Shock absorber for injection devices

A technology of injection device and buffer, which is applied in the direction of syringes, ampoule syringes, automatic injectors, etc., and can solve problems such as user discomfort, affecting user experience, and broken syringes

Active Publication Date: 2021-02-02
SANOFI SA
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shock can cause syringe breakage, component deformation, and "kickback" that can affect user experience
This may cause discomfort to the user, or even cause the injection to not be performed correctly
This is especially a problem when there is an initial gap between the plunger and stopper (for example, in underfilled syringes)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shock absorber for injection devices
  • Shock absorber for injection devices
  • Shock absorber for injection devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 A schematic example of an injection device with a buffer is shown.

[0032] Injection device 100 includes a medicament container 102 for holding a medicament 104 . In some embodiments, the medicament container 102 forms part of a syringe (eg, for a one-shot device). In other embodiments, the medicament container 102 forms part of an auto-injector. In this case, the medicament container 102 may be a consumable part of the auto-injector that can be replaced as needed. In the illustrated embodiment, the walls of the medicament container 102 are substantially cylindrical. In general, medicament containers can have different cross-sectional shapes. In the following description, the medicament container 102 will generally be described as a medicament cartridge. However, other examples of medicament container 102 may alternatively be used.

[0033] The injection device 1 further comprises a needle 106 via which the medicament 104 can be expelled from the medicam...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present application relates to shock absorbers for injection devices. According to a first aspect, this specification discloses an injection device comprising: a medicament container; a stopper translatably disposed within the medicament container; and a plunger rod comprising: a plunger rod body; and a shock absorber, wherein the plunger rod is operable to displace the stopper; and wherein the shock absorber contacts the stopper during displacement of the stopper by the plunger rod, thereby reducing an impact force between the plunger rod and the stopper.

Description

technical field [0001] The present application relates to buffers for injection devices. More specifically, the present application relates to bumpers for reducing the impact of a plunger contacting a bung during an injection event. Background technique [0002] During an injection event using an injection device, initial contact between the plunger and bung in the injection device may cause a shock to the injection device. Shock can cause syringe breakage, component deformation, and "kickback," which can affect the user experience. This may cause discomfort to the user, or even cause the injection to not be performed correctly. This is especially a problem when there is an initial gap between the plunger and stopper (eg, in an underfilled syringe). Contents of the invention [0003] According to a first aspect, the specification discloses an injection device comprising: a medicament container; a bung translatably disposed within the medicament container; and a plunger ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/315A61M5/20F16F9/32
CPCF16F9/3228A61M5/20A61M5/31501A61M5/31515A61M2005/2086A61M2005/31508A61M2005/3151A61M2205/0216A61M5/24A61M2005/2477A61M2005/3143
Inventor U·达斯巴赫H·拉韦特兰R·威尔逊J·布拉德福德T·肯普W·蒂姆斯A·拉巴特·罗切库斯特
Owner SANOFI SA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap