Rapid insufflation drug compartment
AssigneeUniversity Technologies International Inc.
InventorsHenry Duff, Daniel Roach
Life of this patent
Estimating the term…
Abstract
Subcutaneous injection of gas into a body causes insufflation of a cavity, which is followed by infusion of a fluid into the cavity. The fluid preferably carries an active agent, for example a dissolved gas or solute. The method may include iontophoresis of the cavity to enhance diffusion of the active agent into target tissue. Additional steps may be employed to monitor needle tip location to avoid causing damage to an organ by coming into contact with the needle tip or by injecting a gas into a blood vessel.
Claims33
A method of treating an animal, the method comprising the steps of:
- injecting a harmless gas into an interstitial space of the animal to create an artificial compartment within the animal;
- and
- infusing a solution into the artificial compartment.
A method of treating an animal having a tumour, the method comprising the steps of:
- injecting a harmless gas into the tumour to create an artificial compartment within the tumour;
- and
- infusing a solution into the artificial compartment.
An apparatus for insufflation of tissue, the apparatus comprising:
- a catheter having a needle tip;
- a first flow line connected to the cathether, the first flow line being connected to a source of pressurized gas and having a gas flow regulator;
- a second flow line connected to the catheter, the second flow line being connected to a liquid source and having a liquid flow regulator;
- and
- a needle tip locator for locating the needle tip of the catheter within animal tissue to prevent damage to an organ.
A closed conduit pneumatic flow path, comprising:
- a source of pressurized gas;
- a compartment in animal tissue formed by expansion and delamination of tissue by the pressurized gas;
- a flow line leading from the source of pressurized gas to a catheter having a needle tip located within the compartment;
- and
- a needle tip locator for locating the needle tip within the compartment.
Dependencies are inferred from the claim text.