Patent ID: 8337203

Claim:
A mobile suction unit for extracting fluid and debris from an oral cavity of a patient, said mobile suction unit comprising: a portable body; a deformably non-resilient appendage connected to said body; and a dental instrument connected to said deformably non-resilient appendage; wherein said deformably non-resilient appendage is selectively bent from a non-tensioned shape to a curvilinear tensioned shape in such a manner that said deformably non-resilient appendage indefinitely retains said curvilinear tensioned shape while said dental instrument is adapted to be positioned within the patient oral cavity; wherein said deformably non-resilient appendage comprises: an internal conduit having a proximal end in fluid communication with said body and further having a distal end in fluid communication with said dental instrument, said internal conduit remaining capable of transferring fluid and debris therein while said deformably non-resilient appendage is disposed at said curvilinear tensioned shape; wherein said deformably non-resilient appendage comprises: a first deformable sheath directly engaged about an outer surface of said internal conduit, said first deformable sheath extending along an entire longitudinal length of said internal conduit; wherein said first deformable sheath includes a plurality of first spaced grooves formed therein and concentrically disposed about said internal conduit; wherein said deformably non-resilient appendage further comprises: a second deformable sheath directly engaged about an outer surface of said first deformable sheath, said second deformable sheath extending along an entire longitudinal length of said first deformable sheath; wherein said second deformable sheath includes a plurality of second spaced grooves formed therein and concentrically disposed about said internal conduit; wherein said first and second spaced grooves are concentrically juxtaposed along a longitudinal length of said internal conduit, each of said second spaced grooves having a width defined along the longitudinal length of said deformably non-resilient appendage; wherein selected portions of said width are respectively increased and decreased as said second sheath is bent to said curvilinear tensioned shape; wherein said second deformable sheath further comprises: a plurality of tongues statically interfitted within said first spaced grooves respectively, wherein said tongues exert a shear force directed away from a fulcrum axis about which said appendage is bent such that said first deformable sheath is restricted from returning to said non-tensioned shape; wherein said first deformable sheath remains intercalated between said second deformable sheath and said outer surface of said internal conduit; wherein said second sheath is prohibited from disengaging said first sheath and maintains continuous direct contact with said first sheath.