Method of using intramedullary catheter
First Claim
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1. A method of passing fluid to and from the vascular system of a patient through bone, comprising the steps of:
- providing a device having an elongated, tubular conduit with threads extending the length of said conduit, and a head with an overlying silicone elastomer attached to one end of said conduit;
drilling a bore into the bone;
implanting said device into said bore with the conduit in operable communication with the marrow of said bone;
injecting fluid through said elastomer and into the conduit for delivery through the conduit into the bone marrow and transport to the vascular system;
repeating the injecting step for repetitive, relatively long term delivery of fluid to the patient'"'"'s vascular system;
withdrawing fluid through said elastomer and from the conduit for drawing fluid from the bone marrow; and
repeating the withdrawing step for repetitive, relatively long term drawing of fluid from the patient'"'"'s vascular system.
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Abstract
A method and device for use in delivering or withdrawing fluid to or from the vascular system of bone marrow, wherein a tubular conduit is inserted into bone and fluid is delivered or withdrawn to or from a reservoir through a seal means surrounding a head attached to one end of the conduit in communication with bone marrow at the opposite end of the conduit. Access to bone marrow is achieved by implanting an improved intramedullary catheter of the present device within a bone and creating a reusable passage via a conduit placed between bone marrow and the outer surface of bone or skin.
180 Citations
9 Claims
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1. A method of passing fluid to and from the vascular system of a patient through bone, comprising the steps of:
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providing a device having an elongated, tubular conduit with threads extending the length of said conduit, and a head with an overlying silicone elastomer attached to one end of said conduit; drilling a bore into the bone; implanting said device into said bore with the conduit in operable communication with the marrow of said bone; injecting fluid through said elastomer and into the conduit for delivery through the conduit into the bone marrow and transport to the vascular system; repeating the injecting step for repetitive, relatively long term delivery of fluid to the patient'"'"'s vascular system; withdrawing fluid through said elastomer and from the conduit for drawing fluid from the bone marrow; and repeating the withdrawing step for repetitive, relatively long term drawing of fluid from the patient'"'"'s vascular system. - View Dependent Claims (2, 3, 4, 5)
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6. A method of passing fluid to or from the bone marrow of a patient, comprising the steps of:
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providing a device having an elongated, tubular conduit with cutting threads extending the length of said conduit, and a head with an overlying sealing membrane attached to one end of said conduit and a cutting tip attached to the opposite end of said conduit; placing an elongated tool over said head; screwing a portion of said device into said bone in response to rotating movement of said tool; and placing a needle through said sealing membrane to pass fluid to or from said bone marrow. - View Dependent Claims (7, 8, 9)
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Specification