ESTER is a fully automatic, single-use device, particularly indicated for prostatic, hepatic, renal and mammary biopsies. Due to its particular features, specific technical aspects of this device have been patented.

FEATURES:

1. A single button that loads the cannula and the stylet.
With this system the device can be used with one hand, ensuring greater convenience and comfort, as well being able to use of the ultrasound
scan with the free hand.
2. Two possible firing buttons: one on the side and one on the back, which can be chosen by the doctor in relation to his/her specific manual
preference.
3. The fire can take place in two distinct alternatives, chosen by the Doctor:
3.1 Delay system: pressing the button lightly allows the stylet only to advance, thus exposing the sampling cavity out of the cannula.
Subsequently, pressing the button until it stops allows the cannula to advance forward. In this way the fire takes place through two
distinct actions and the time between one and the other is defined by the doctor.
3.2 Automatic system: pressing the button until it stops advances the stylet and the cannula simultaneously (the advancement time is
slightly out of phase, but the fire, in this case, takes place through a single action).
ESTER can be equipped with a coaxial needle (Introducer) to the device, recommended in biopsies with multiple samples (egg. mammarbiopsies).
ESTER is available in various versions:
– In the “Double Step” version: automatic and delay system
– In the “Single Step” version: automatic single shot.

SURGICAL TECHNIQUE:

1. LOADING: A single button that loads the cannula and the stylet.
Pressing the button once loads the cannula, and a second time loads the stylet.
2. INSERTION OF THE NEEDLE: The loaded needle is inserted in the selected point for biopsy.
3. EXPOSING OF THE SAMPLE CAVITY: The needle is ready for the biopsy procedure: two possible firing buttons, one on the side and one at the
back, and can be chosen by the doctor.
The fire can take place in two distinct alternatives:
Delay system: the selected button is pressed once lightly to advance the stylet and then the button is pressed until it stops to advance the cannula.
Automatic system: pressing the button until it stops moves the cannula and the stylet forward at the same time.
4. FIRE: The sample is collected inside the needle. Finish by gently extracting the needle from the tissues.
5. SAMPLE COLLECTION: To recover the material, repeat the loading procedure indicated in point 1, press the load button only once to uncover
the sample area. Then collect the sample for the laboratory exam.