Researchers have developed a new type of contraceptive that could make birth control more accessible and easier to use. This innovative approach involves a self-administered injectable contraceptive that works similarly to traditional implants.
A contraceptive implant is a small, flexible rod that is placed under the skin and releases hormones to prevent pregnancy for several years. While it is highly effective, getting the implant requires minor surgery, which can be a barrier for many women. The new self-injectable option aims to address this issue.
The team published their findings in a study in the journal Nature Chemical Engineering. This new method could provide a long-lasting and reliable contraceptive option, especially for women who don’t have easy access to healthcare facilities. It could also be adapted for other long-term medications, like those used for HIV treatment.
The technology involves using tiny crystals that form an implant once injected. These crystals are designed to slowly release the hormone levonorgestrel over time, making it effective for months or even years.
Vivian Feig, a mechanical engineer at Stanford University and co-author of the study, shared that the goal is to offer women various contraceptive options that are easy to administer and suitable for use in developing regions.
Currently, there are birth control shots available that patients can self-administer. However, these require injections every three months and are not as effective as implants. The new design combines the convenience of self-administered shots with the long-lasting effectiveness of implants.
One of the challenges with similar self-injectable technologies has been the need for larger needles, which can be painful. The researchers’ formula uses smaller needles due to the tiny size of the crystals and the liquid compound used, making injections easier and more comfortable.
Giovanni Traverso, a senior author of the study, noted the importance of needle size and liquid viscosity for making these injections more comfortable for patients. The team worked to create a formula that minimizes bruising and bleeding while still being easy to inject.
Additionally, the researchers can adjust the mixture to control how quickly the medication is released, allowing for personalized dosing for different contraceptive needs and other therapeutic uses.
While this self-injectable contraceptive has not yet undergone clinical trials, the research shows promising potential for more effective and convenient long-term medication options in the future.
