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Medical probe with fluid rotary joint

  • US 9,387,305 B2
  • Filed: 05/29/2012
  • Issued: 07/12/2016
  • Est. Priority Date: 05/27/2011
  • Status: Active Grant
First Claim
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1. A medical probe comprising:

  • an external sheath;

    a rotatable fluid conduit housed within said external sheath, said rotatable fluid conduit including an inner lumen; and

    a fluid rotary joint comprising;

    an outer housing including an external port, wherein a proximal portion of said external sheath is connected to a distal region of said outer housing;

    a rotatable insert having an inner channel, wherein said rotatable insert is housed within said outer housing and rotatable within said outer housing, and wherein a proximal portion of said rotatable fluid conduit is connected to said rotatable insert, such that said inner channel is in fluid communication with said inner lumen, and such that said rotatable fluid conduit rotates in unison with said rotatable insert;

    said external sheath defining an outer lumen, wherein said inner lumen is in fluid communication with said outer lumen at a location remote from a proximal portion of said rotatable fluid conduit;

    a secondary port in fluid communication with said outer lumen, wherein said secondary port is located in a proximal direction relative to a distal end of said rotatable fluid conduit, such that a direction of fluid flow in the outer lumen is opposite to a direction fluid flow in the inner lumen; and

    at least one seal between said rotatable insert and an inner surface of said outer housing;

    wherein said inner channel is in fluid communication with said external port under rotation of said rotatable fluid conduit; and

    wherein said rotatable insert is connectable to a rotational drive mechanism.

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