Connection element and connecting device for tubes

A connection element for tubes for medical use, comprising:

• a main body defining at least one fluid passage between a first opening and a second opening, said second opening being positioned at a first distance from said first opening, said main body being configured to be attachable to an end of a first tube, said main body having an outer body of essentially tubular configuration and a core fixed to the outer body;
• a shut-off element made of an elastically deformable material, said shut-off element being at least partly housed inside the main body, to allow or prevent fluid communication between said first and second openings of the main body, said shut-off element comprising:
• a fixing portion engaged on the main body,
• an intermediate portion extending from said fixing portion, said intermediate portion having a longitudinal axis of symmetry and being axially deformable, and
• a sealing portion extending from the intermediate portion and configured to be moved, at least between a first operating condition, in which the sealing portion shuts off the first opening and prevents said fluid communication between the first and second openings, and a second operating condition in which the sealing portion is positioned at a second distance from the first opening to allow fluid communication between said first and second openings,
• at least said intermediate portion of the shut-off element being configured to deform symmetrically during the transition from said first operating condition to said second operating condition,
• said core of the main body extending coaxially with the shut-off element in a radially inward position with respect to said outer body, said core further having an attachment portion for the fixing portion of the shut-off element to engage with, and a tubular expansion at an axially opposite end from said attachment portion and from said shut-off element, and
• said main body further defining, in combination with said shut-off element, a fluid channel having an axial-symmetric configuration with respect to said longitudinal axis of symmetry of the intermediate portion, both in said second operating condition and in said first operating condition, the fluid channel comprising:
• a distal portion extending between said shut-off body and said outer body,
• a proximal portion extending inside said tubular expansion, and
• a joining portion between said distal and proximal portions of said fluid channel, said joining portion extending through an intermediate section of the core between said tubular expansion and said attachment portion, said distal portion having a radial dimension greater than the proximal portion, and said joining portion having openings formed on said intermediate section, said openings converging progressively towards said proximal portion of the fluid channel.

A connection element for tubes for medical use, comprising:

• a main body defining at least one fluid passage between a first opening and a second opening, said second opening being positioned at a first distance from said first opening, said main body being configured to be attachable to an end of a first tube, said main body having an outer body of essentially tubular configuration and a core fixed to and extending inside the outer body;
• a shut-off element made of an elastically deformable material, said shut-off element being at least partly housed inside the main body, to allow or prevent fluid communication between said first and second openings of the main body, said shut-off element comprising:
• a fixing portion engaged on the main body,
• an intermediate portion extending from said fixing portion, said intermediate portion having a longitudinal axis of symmetry and being axially deformable, and
• a sealing portion extending from the intermediate portion and configured to be moved, at least between a first operating condition, in which the sealing portion shuts off the first opening and prevents said fluid communication between the first and second openings, and a second operating condition in which the sealing portion is positioned at a second distance from the first opening to allow fluid communication between said first and second openings,
• at least said intermediate portion of the shut-off element being configured to deform symmetrically during the transition from said first operating condition to said second operating condition,
• said core of the main body having an attachment portion for the fixing portion of the shut-off element to engage with, and
• said outer body of the main body having a lateral surface, the lateral surface presenting at least a through window, the outer body externally carrying a grip body having at least a radial protrusion passing through said through window, the radial protrusion engaging with an annular recess present on the core and joining the external body to the core of the main body.

A connecting device for tubes for medical use, comprising a connection element having:

• a main body defining at least one fluid passage between a first opening and a second opening, said second opening being positioned at a first distance from said first opening, said main body being configured to be attachable to an end of a first tube;
• a shut-off element made of an elastically deformable material, said shut-off element being at least partly housed inside the main body, to allow or prevent fluid communication between said first and second openings of the main body, said shut-off element comprising:
• a fixing portion engaged on the main body;
• an intermediate portion extending from said fixing portion, said intermediate portion having a longitudinal axis of symmetry and being axially deformable;
• and
• a sealing portion extending from the intermediate portion and configured to be moved, at least between a first operating condition, in which the sealing portion shuts off the first opening and prevents said fluid communication between the first and second openings, and a second operating condition in which the sealing portion is positioned at a second distance from the first opening to allow fluid communication between said first and second openings;
• at least said intermediate portion of the shut-off element being configured to deform symmetrically during the transition from said first operating condition to said second operating condition;
• said connecting device further comprising an auxiliary connection element configured to connect to a terminal portion of a second tube and configured to be engaged removably on the main body of said connection element to provide fluid communication between the first tube and the second tube, said auxiliary connection element having an auxiliary main body defining at least one auxiliary fluid passage, said auxiliary main body having a coupling portion that mates with said outer body, and a male element emerging from a base of said coupling portion,
• said male element being configured to push said sealing portion of the shut-off member from said second operating condition to said first operating condition, said male element being having an axial-symmetric configuration with an axis of symmetry aligned with that of said intermediate portion, when the connection element and auxiliary connection element are in mutual engagement, said male element further having a collar with lateral ports arranged symmetrically with respect to said axis of symmetry of the male element, for a fluid to pass through.