Needle free N-jector™

Needle free N-jector™ is the brand name for our Needle-Free jet injectors. The “N” stands for needle free, and the products are similar in material design and jet propulsion mechanics.

PREJEX is a company with both a pre-filled, single-use, totally disposable Needle free N-jector, and the repeated-use “N-jector-Multi” shown above and as described below.

New products in the final stages of R&D include:
⦁ A Needle free N-jector repetitive dosing technology that does not require re-loading an ampule or using a reset box, and uses a “drug reservoir” similar to needle-containing insulin pens but with not needle.  There is no transfer of medicine, no disposal hazards, no sterilization required, repeated dosing from the same device, cost effective and competitive.
⦁  A Needle free N-jector “pen” unit that is narrow, like ballpoint pen, and contains a pre-filled glass vial within the stainless steel jet injector unit.
⦁ A Needle free N-jector “trocar” for the administration of drugs, biologics and gene therapy molecules deep within the body using “shockwave technology” to deliver the therapeutics inside of cells and tissues of the body.

PREJEX - Disposable with cap 3

The Needle free N-jector is a single-use device that comes with either a drug filled ampule, filled to the correct dose with a physician-prescribed medicine or a sterile-packed empty ampule to be filled by the patient, the caregiver, or a pharmacist for a single dose administration of a drug, biologic or vaccine.
The volume of the Drug Solution can be from 0.05 ml to 0.30 ml, providing a large range of dosing (milligrams of drug) to occur.

The device is light-weight and easy to handle for self-administration. It can be stored refrigerated or at room temperature for long periods of time so it can be shipped cross-country. It can be thrown in the trash after the dose is administered as it contains no biohazardous needles. The drug pre-filled N-jector can be picked up at the pharmacy or delivered right to the patient at home.  This convenience factor should promote patient-friendly dosing and improved compliance.

For the fertility use, a carton of seven (7) pre-filled N-jector-IVF is delivered to the women for the induction of ovulation.  The Drug Solution will be follicle stimulating hormone (FSH) or FSH containing luteinizing hormone (LH). The dose of the FSH and/or FSH+LH will be prescribed by a doctor and filled by a pharmacist. A doctor may prescribe either 7 days or 14 days of nightly dosing, so if the Rx is for 14 days, the patient would receive 2 cartons of the 7 N-jector-IVF.

For ED, facial cosmetic use, human growth hormone, or less frequent dosing (once a week or once a month), a single pack or multi-pack carton is available and will be prescribed as such.

The use of needle-free injectors such as the Needle free N-jector product lines are reimbursed by Medicare, Medicaid, CMS and other Governmental organizations in the U.S., Europe, and elsewhere.

Company Addresses:

Prejex R&D

Bennigsenstrasse 14
12159 Berlin

Prejex International

Churerstrasse 47
8808 Pfäffikon

Prejex Holding S.A.

11 Rue de l’Industrie
8399 Windhof Koerich


Prejex Components


Prejex offers (pre)fillable sterile disposable ampules for injecting doses of 0.5 ml or less per injection.
These special ampules are made of a proprietary inert material which allows them to be used for long term storage of medication in situations where shelf life is required. The pre-filled ampules are filled at the Pharmaceutical company’s filling and packaging facility, this to the customer specifications, with special ampule filling equipment available from Prejex.

The reusable Needle free N-jector™

PREJEX - Reusable Spanner Closed Top 1

The reusable Needle free N-jector