Medical instrument for the multidirectional atomising of a fluid into a cavity of a body, and tool therefor

A tool (1) for a medical instrument, configured for multidirectional atomization of a fluid into a cavity of a body, comprising:

• a shaft (2) with a lumen (7);
• a nozzle head (3) having nozzles (4, 5), including at least two lateral nozzles (4) and a distal nozzle (5),
• wherein the nozzle head (3) is arranged on a distal end (1′) of the tool (1),
• wherein the distal nozzle is arranged on a distal end face (3′) of the nozzle head (3),
• wherein each nozzle has a nozzle opening (4′, 5′),
• wherein each nozzle opening (4′, 5′) is fluidically connected to the lumen (7) via a distributor cylinder (10);
• and
• a cap (6), the cap (6) being releasably arranged around the nozzle head (3),
• wherein the cap has a respective through opening (6′) for each of the nozzles (4, 5),
• wherein each respective through opening (6′) is positioned over the respective nozzle opening (4′, 5′) of the respective nozzle (4, 5) and formed to allow a discharge of a stream of the fluid to be atomized,
• wherein each respective through opening (6′) has a diameter that is smaller than a diameter of the respective nozzle (4, 5) positioned under the respective through opening (6′),
• wherein the nozzle head (3) is cylindrical and tapers over a shoulder (13) on an end facing the shaft (2) and forms a hollow-cylindrical receiving section (12), and
• wherein a pin (11) is received in the lumen (7), and
• wherein a gap provides a fluid path for the fluid between an outer circumference of the pin and an inner circumference of the shaft (2),
• wherein, on an end facing the nozzle head (3), the pin (11) has a section (14) with a tapered outer circumference, and
• wherein the hollow-cylindrical receiving section (12) of the nozzle head (3) extends into the shaft (2) and surrounds at least a portion of the section (14) with the tapered outer circumference of the pin (11).

A medical instrument for multidirectional atomization of a fluid into a cavity of a body, comprising:

• a handle (22);
• a fluid source (23);
• and
• a tool configured to be releasably connected to the handle (22) and to be fluidically connected to the fluid source (23),
• wherein the tool comprises
• a shaft (2) with a lumen (7);
• a nozzle head (3) having nozzles (4, 5), including at least two lateral nozzles (4) and a distal nozzle (5),
• wherein the nozzle head (3) is arranged on a distal end (1′) of the tool (1),
• wherein the distal nozzle is arranged on a distal end face (3′) of the nozzle head (3),
• wherein each nozzle has a nozzle opening (4′, 5′),
• wherein each nozzle opening (4′, 5′) is fluidically connected to the lumen (7) via a distributor cylinder (10);
• and
• a cap (6), the cap (6) being releasably arranged around the nozzle head (3),
• wherein the cap has a respective through opening (6′) for each of the nozzles (4, 5),
• wherein each respective through opening (6′) is positioned over the respective nozzle opening (4′, 5′) of the respective nozzle (4, 5) and formed to allow a discharge of a stream of the fluid to be atomized,
• wherein each respective through opening (6′) has a diameter that is smaller than a diameter of the respective nozzle (4, 5) positioned under the respective through opening (6′),
• wherein the nozzle head (3) is cylindrical and tapers over a shoulder (13) on an end facing the shaft (2) and forms a hollow-cylindrical receiving section (12), and
• wherein a pin (11) is received in the lumen (7), and
• wherein a gap provides a fluid path for the fluid between an outer circumference of the pin and an inner circumference of the shaft (2),
• wherein, on an end facing the nozzle head (3), the pin (11) has a section (14) with a tapered outer circumference, and
• wherein the hollow-cylindrical receiving section (12) of the nozzle head (3) extends into the shaft (2) and surrounds at least a portion of the section (14) with the tapered outer circumference of the pin (11).