Valved Catheter with Integrated Pressure Measurement Capabilities
Valve assemblies and valved catheters including pressure sensors, and related methods for treating patients, are disclosed. The valve assembly includes a valve member extending across a first lumen and includes a planar flexible member with an internal slit acting as a valve. The valve assembly further includes a pressure sensor located distally from the valve member and in fluid communication with the first lumen.
1 . A valve assembly for use with a catheter comprising:
a proximal end, a distal end in contact with the catheter, and a first lumen extending between said proximal and distal ends, said first lumen being in fluid communication with the catheter,
a valve member extending across said first lumen, said valve member comprising:
a planar flexible member comprising first and second valve portions separated from one another by an internal slit,
the first and second valve portions moving, when subjected to a fluid pressure of at least a predetermined threshold level, to a first open position so that material may flow distally through said valve member, through said first lumen, and into the catheter,
the first and second valve portions remaining substantially closed at all times when a fluid pressure exerted thereagainst is less than the threshold level to substantially prevent flow through said valve member; and
a pressure sensor located distally from said valve member.
2 . The valve assembly of claim 1 , further comprising a valve housing and a sensor housing, wherein said valve housing contains said first lumen and said valve member, and said sensor housing comprises said pressure sensor and a second lumen extending between said pressure sensor and said first lumen.
3 . The valve assembly of claim 2 , wherein said sensor housing is rotatable about said valve housing.
4 . The valve assembly of claim 3 , wherein when said sensor housing is rotated about said valve housing, it is moveable from a position in which said second lumen is in fluid communication with said first lumen to a position in which said second lumen is not in fluid communication with said first lumen.
5 . The valve assembly of claim 4 , wherein said sensor housing comprises a first contacting element and said valve housing comprises a second contacting element, said first and second contacting elements being configured to make contact during the rotation of said sensor housing about said valve housing to indicate that said sensor housing is in said position in which said second lumen is in fluid communication with said first lumen.
6 . The valve assembly of claim 2 , further comprising a pressure seal extending across said second lumen.
7 . The valve assembly of claim 1 , wherein said distal end of said assembly is insertable into the catheter.
8 . The valve assembly of claim 1 , further comprising an electrical connection between said pressure sensor and a voltage source.
9 . The valve assembly of claim 1 , further comprising a data connection between said pressure sensor and a user interface.
10 . A valve assembly for use with a catheter comprising:
a valve housing and a sensor housing;
said valve housing comprising:
a proximal end, a distal end in contact with the catheter, and a first lumen extending between said proximal and distal ends, said first lumen being in fluid communication with the catheter,
a valve member extending across said first lumen, said valve member comprising a planar flexible member comprising first and second valve portions separated from one another by an internal slit,
the first and second valve portions moving, when subjected to a fluid pressure of at least a predetermined threshold level, to a first open position so that material may flow distally through said valve member, through said first lumen, and into the catheter,
the first and second valve portions remaining substantially closed at all times when a fluid pressure exerted thereagainst is less than the threshold level to substantially prevent flow through said valve member;
said sensor housing comprising:
a pressure sensor located distally from said valve member, and
a second lumen extending between said pressure sensor and said first lumen.
11 . The valve assembly of claim 10 , wherein said sensor housing is rotatable about said valve housing.
12 . The valve assembly of claim 11 , wherein when said sensor housing is rotated about said valve housing, it is moveable from a position in which said second lumen is in fluid communication with said first lumen to a position in which said second lumen is not in fluid communication with said first lumen.
13 . The valve assembly of claim 12 , wherein said sensor housing comprises a first contacting element and said valve housing comprises a second contacting element, said first and second contacting elements being configured to make contact during the rotation of said sensor housing about said valve housing to indicate that said sensor housing is in said position in which said second lumen is in fluid communication with said first lumen.