A therapeutic probe for treating tissue using focused ultrasonic waves, including a transducer formed by a plurality of ultrasonic sources distributed over an emission surface to focus the ultrasonic waves into a first focal area (Z 1) established in a focal plane (Pf), the emission surface having, within a profile plane (P p), two concave curve segments (s 1) which have a finite length, and which are symmetrical relative to a plane of symmetry (A 1) or to an axis of symmetry, each concave curve segment (s 1) has an acoustic axis (a) passing through the center of curvature and the middle of said concave curve segment (s 1), said emission surface being created either by rotating one of the concave curve segments (s 1) around the axis of symmetry or by translating both curve segments (s 1) in a direction perpendicular to the profile plane (P p) containing said curve segments, characterized in that: - within the profile plane (P p), the two concave curve segments (s 1) follow arcs of first (E 1) and second (E 2) non-coincident circles that intersect each other, one of the concave curve segments (s 1) following the arc of the first circle, that arc being situated within the second circle, while the other of the two concave curve segments (s 1) follows the arc of the second circle, the said arc being situated inside the first circle, - each curve segment (s 1) has an acoustic axis (a) intersecting the axis of symmetry or the plane of symmetry (A 1) between the first focal area (Z 1) and the emission surface, the acoustic axes (a) being separated from each other, at the first focal area (Z 1), by a separating distance (D e) comprised between 1 and 50 mm, such that the beams of the emission surface intersect to create a second focal area (Z 2) that is located and situated between the first focal area (Z 1) and the emission surface, and separated from the focal plane (Pf), - the emission surface includes an inner edge (8 1) whereof the symmetrical parts extending on either side of the axis of symmetry or plane of symmetry (A 1) are separated from each other by an inner distance (D i) comprised between 10 and 120 mm allowing the second focal area to be positioned away from the emission surface. - within the profile plane (P p), the two concave curve segments (s 1) follow arcs of first (E 1) and second (E 2) non-coincident circles that intersect each other, one of the concave curve segments (s 1) following the arc of the first circle, that arc being situated within the second circle, while the other of the two concave curve segments (s 1) follows the arc of the second circle, the said arc being situated inside the first circle, - each curve segment (s 1) has an acoustic axis (a) intersecting the axis of symmetry or the plane of symmetry (A 1) between the first focal area (Z 1) and the emission surface, the acoustic axes (a) being separated from each other, at the first focal area (Z 1), by a separating distance (D e) comprised between 1 and 50 mm, such that the beams of the emission surface intersect to create a second focal area (Z 2) that is located and situated between the first focal area (Z 1) and the emission surface, and separated from the focal plane (Pf), - the emission surface includes an inner edge (8 1) whereof the symmetrical parts extending on either side of the axis of symmetry or plane of symmetry (A 1) are separated from each other by an inner distance (D i) comprised between 10 and 120 mm allowing the second focal area to be positioned away from the emission surface.