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Needleless syringe with prefilled cartridge

A needle-free injection and cartridge technology, which can be used in syringes, ampoule syringes, hypodermic instruments, etc., can solve problems such as difficulty in precision

Inactive Publication Date: 2005-06-22
BIOJECT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

and the introduction of air can make it difficult to achieve this precision

Method used

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  • Needleless syringe with prefilled cartridge
  • Needleless syringe with prefilled cartridge
  • Needleless syringe with prefilled cartridge

Examples

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Embodiment Construction

[0039] The embodiment of Fig. 1-10

[0040] The objects of the invention are best achieved when the invention takes the form of the embodiment shown in Figures 1-10. First, description will be made with reference to those drawings. Shown generally at 10 is a cartridge / nozzle assembly, wherein the cartridge may be prefilled with a liquid injection. The assembly includes: a cartridge 12, which in a preferred embodiment is formed from reinforced glass; and a nozzle 14, which in a preferred embodiment is formed from a high-strength thermoplastic, and The thermoplastic is typically polycarbonate. The nozzle 14 is of a conventional design, except that the rear (or left in FIG. 1 ) includes a plurality of evenly spaced feet 16 . In the illustrated embodiment, four such feet are included, positioned at 90 degree intervals around the nozzle, two of which are shown in dashed lines in FIG. 1 . Alternatively, three or even two such feet can be used.

[0041] With the cartridge 12 i...

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PUM

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Abstract

The invention provides a cartridge and nozzle assembly (10) having a nozzle (14) with a valve-receiving portion including a plurality of channels to facilitate flow of injectate to the nozzle orifice. Specifically, the assemb ly includes a cartridge (12) having a plunger (24) disposed at a rearward end thereof, with an inner portion having a throat (21) at a forward portion thereof, the cartridge further including a generally laterally extending interface surface.

Description

technical field [0001] This application is a continuation-in-part of Serial No. 09 / 207,398 filed December 8,1998. The present invention relates to a needle-free injection system comprising a prefilled cartridge. Background technique [0002] One of the current problems inherent in the packaging of liquid parenteral drugs is that there are insufficient data on the biocompatibility of the interaction between those drugs and thermoplastic containers. Although plastics are commonly used in many injection devices, most parenteral drugs cannot be exposed to most plastics except for a short period immediately prior to injection. This is because the drug or injection may chemically react with the plastic, or cause the substances in the plastic to dissolve into the injection, thereby producing impurities in the drug. Such exposure to plastic containers may lead to degradation of the drug during prolonged storage periods. For these reasons, the pharmaceutical industry generally avo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/30A61M
CPCA61M5/30A61M5/2053A61M5/286A61M2005/287A61M2005/3106A61M2005/3132
Inventor S·兰多J·M·博尼卡托
Owner BIOJECT