Burr hole ring with catheter for use as an injection port
AssigneeMedtronic, Inc.
InventorMichael D. Baudino
Life of this patent
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Abstract
A burr hole ring with a catheter for use as an injection port comprises a modified burr hole ring adapted to engage the skull at a burr hole drilled therein. The interior of the burr hole ring defines a fluid reservoir that may be accessed by a needle or stylet inserted through a septum positioned over the top of the burr hole ring. The reservoir is in fluid communication with the central lumen of a catheter. The assembly comprises a fluid flow path suitable for the transfer of fluids to or from selected location at, near or within the brain. A filter layer may be provided to prevent contamination of the drug infusion site.
Claims29
An apparatus for securing a catheter within a burr hole through a patient's skull, comprising:
- a housing member configured to be mechanically coupled to said skull proximate said burr hole, said housing member including a generally interior portion, said interior portion being in fluid communication with said catheter;
- a septum selectively coupleable to said housing to isolate said interior portion of said housing from a location exterior to said patient's skull, said septum selectively penetrable to provide fluid communication from said location exterior to said skull and said interior portion of said housing member, said septum having a top,
- wherein said septum and said housing member each include a stylet guiding means comprising an aperture for providing access by a stylet into said catheter.
An apparatus for securing a catheter within a burr hole through a patient's skull, comprising:
- a housing member configured to mechanically engage the surfaces of said skull defining said burr hole, said housing forming a fluid reservoir, said housing including a connection portion configured to mechanically engage a catheter assembly;
- and
- a septum configured to provide selective access to said fluid reservoir from a location exterior to said patient's skull, said septum having a top,
- wherein said septum and said housing member each include a stylet guiding means comprising an aperture for providing access by a stylet into said catheter.
An apparatus for providing fluid access with a patient's brain through a burr hole, comprising:
- a burr hole cap assembly engageable with said patient's skull, said burr hole cap assembly comprising a catheter coupled to a fluid exit of a burr hole cap, said catheter extending into said patient's brain, said burr hole ring comprising a fluid chamber and a filter chamber in a fluid path between said fluid chamber and said fluid exit;
- a filter element within said filter chamber;
- and
- a septum generally isolating said fluid chamber from a location exterior to said patient's skull while allowing penetration by a needle, said septum having a top,
- wherein said septum and said burr hole cap each include a stylet guiding means comprising an aperture for providing access by a stylet into said catheter.
A housing member engageable with a patient's skull, said housing member including a first fluid reservoir within said patient's skull, comprising:
- a second fluid reservoir at a second location within the patient's body;
- and
- a filtering layer within a fluid flow path between said first and second fluid reservoirs, said filtering layer adapted to prevent contaminants within contaminated fluid following the fluid flow path from one reservoir to the other reservoir from passing from the one reservoir to the other reservoir.
An apparatus for providing fluid access with a patient's brain through a burr hole, comprising:
- a burr hole cap assembly engageable with said patient's skull, said burr hole cap assembly comprising a catheter coupled to a fluid exit of a burr hole cap, said catheter extending into said patient's brain, said burr hole ring comprising a fluid chamber and a filter chamber in a fluid path between said fluid chamber and said fluid exit;
- a filter element within said filter chamber;
- and
- a septum generally isolating said fluid chamber from a location exterior to said patient's skull while allowing penetration by a needle,
- a porous needle stop surface located, at least in part, between said fluid chamber and said filter chamber.
Dependencies are inferred from the claim text.