How it works

A valve, placed once. Switched when you choose.

Choice is a mechanical valve inside a small stent. One is placed in each fallopian tube, where it meets the uterus.

Investigational device. Not approved or available for use in any market.

Rendering of the uterus and fallopian tubes, with a Choice valve at the start of each tube

Rendering for illustration. Valve shown enlarged for visibility.

01Placement

Through the cervix, under direct vision.

Choice is specifically designed to be placed and removed without pain, in an outpatient procedure and without incisions. Our own 1.2 mm endoscope lets the gynaecologist see inside the fallopian tube while placing the valve.

The Choice endoscope next to the tip of a pencil — The Choice endoscope, next to the tip of a pencil.

Choice valve closed, seen from the side and looking through the tube: the passage is fully blocked — Closed: side view and looking through the tube

Choice valve open, seen from the side and looking through the tube: the passage is free — Closed: side view and looking through the tube

02The valve

Open or closed, without power.

The valve is bistable: it stays open or closed without any energy. Closed, it is designed to keep sperm and egg apart. Open, the tube is designed to work as before.

03Switching and removal

Designed to be reversed.

The first version, Choice ONE, is switched with the same 1.2 mm endoscope used for placement, in a short outpatient procedure. A later version, Choice TWO, is being designed for wireless switching. Choice is also designed to be removable. Removal still has to be demonstrated in clinical studies.

Rendering of a Choice valve inside the fallopian tube

The valve in place in a fallopian tube, all the way round. Rendered from the CAD model.

04Specifications

Choice ONE, in development.

The Choice valve next to the tip of a ballpoint pen.

Length: About 15 mm
Diameter: 1.6 mm
Materials: Nitinol stent, ceramic housing. One metal.
Actuation: Bistable mechanism. Stays open or closed without power.
Placement: Endoscopic, outpatient, with a 1.2 mm endoscope.
Switching: Endoscopic, outpatient, with the same 1.2 mm endoscope (ONE). Wireless switching in design (TWO).
Removal: Designed to be removable without pain. To be demonstrated clinically.
Status: Investigational. Not approved for use.

Are you a gynaecologist or hysteroscopist?

We work with clinicians in the Netherlands, Europe and the US on study design and placement. We would like to hear from you.

Get in touch