Curved connection unit for connecting a patient to a medical device

A fluid guiding system comprising a fluid guiding component comprising:

• a device-side fluid guiding unit;
• and
• a connection unit, the connection unit comprising:
• a hollow patient-side connection piece for connecting a patient-side fluid guiding unit, which is connectable to the patient-side coupling unit;
• a hollow device-side connection piece for connecting a device-side fluid guiding unit, which is connectable to the medical device;
• a port piece comprising a straight tube segment and a bent surface element with a bent surface and with a passage opening, wherein the passage opening is arranged in the bent surface of the bent surface element and occupies at most half of the bent surface of the bent surface element;
• and
• a hollow central piece with two ends, wherein the central piece comprises a curved tube segment with a wall, wherein one end of the central piece is fluid-tight connected to the patient-side connection piece and another end of the central piece is fluid-tight connected to the device-side connection piece, wherein:
• the hollow patient-side connection piece hollow device-side connection piece and the curved tube segment provide a curved flow passage;
• the port piece is insertable into a receiving opening of the central piece such that the bent surface of the bent surface element forms a part of the wall of the curved tube segment;
• the straight tube segment of the port piece and the central piece together provide a straight flow passage, which is interrupted by the bent surface element of the inserted port piece, passes through the passage opening and continues in the interior of the patient-side connection piece;
• the device-side connection piece of the connection unit is configured to be fluid-tight connectable to the device-side fluid guiding unit;
• and
• the device-side fluid guiding unit is configured to be fluid-tight connectable to a medical device.

A connection unit process for a connection unit comprising:

• a hollow patient-side connection piece for connecting a patient-side fluid guiding unit, which is connectable to a patient-side coupling unit;
• a hollow device-side connection piece for connecting a device-side fluid guiding unit, which is connectable to the medical device;
• a port piece comprising a straight tube segment and a bent surface element with a bent surface and with a passage opening, wherein the passage opening is arranged in the bent surface of the bent surface element and occupies at most half of the bent surface of the bent surface element;
• and a hollow central piece with two ends, wherein the central piece comprises a curved tube segment with a wall, wherein one end of the central piece is fluid-tight connected to the patient-side connection piece and another end of the central piece is fluid-tight connected to the device-side connection piece, wherein:
• the hollow patient-side connection piece hollow device-side connection piece and the curved tube segment provide a curved flow passage;
• the port piece is insertable into a receiving opening of the central piece such that the bent surface of the bent surface element forms a part of the wall of the curved tube segment;
• and the straight tube segment of the port piece and the central piece together provide a straight flow passage, which is interrupted by the bent surface element of the inserted port piece, passes through the passage opening and continues in the interior of the patient-side connection piece, the process comprising the steps of:
• manufacturing the port piece;
• manufacturing the hollow patient-side connection piece;
• manufacturing the hollow device-side connection piece;
• manufacturing the central piece such that the wall of the central piece has the receiving opening;
• inserting the port piece into the receiving opening such that the bent surface element of the port piece closes the receiving opening;
• and
• fluid-tight connecting the central piece to the hollow patient-side connection piece and fluid-tight connecting the central piece the hollow device-side connection piece.