Neurosurgical apparatus and methods
AssigneeNeurochase Limited
InventorsSteven Streatfield Gill, Maxwell Roy Woolley, Thomas Gill
Life of this patent
Estimating the term…
Abstract
A neurosurgical kit includes a catheter and a guide tube. The catheter includes a distal section of tubing having a distal end with a port or ports for delivering fluid to a target site within the brain. The distal section of tubing has an outer diameter that is smaller than an internal diameter of the guide tube. The catheter and guide tube are arranged such that, when the catheter is inserted into the guide tube to locate the port or ports at the target site, a recess is provided in a distal end section of the guide tube between the guide tube and the distal section of tubing of the catheter.
Claims15
A neurosurgical method comprising inserting a guide tube having a guide tube opening in a distal end thereof into a brain such that the guide tube cores a section of brain tissue;
- inserting a catheter that comprises an indication and a distal section of tubing having a distal end with a port or ports for delivering fluid to a target site within the brain into the guide tube to locate the port or ports at the target site, wherein a recess is in a distal end section of the guide tube between the guide tube and the distal section of tubing of the catheter that passes through the recess to locate the port or ports at the target site, an open end of the recess is defined by the guide tube opening, a closed end of the recess is contained within the distal end section of the guide tube, and the indication indicates an extent of the catheter that should be inserted into the guide tube;
- locating the port or ports at the target site in the brain;
- and
- arranging the catheter and guide tube such that
- the catheter is inserted into the guide tube to the extent indicated by the indication and such that the catheter passes through the brain tissue cored by the guide tube,
- the recess is in the distal end section of the guide tube between the guide tube and the distal section of tubing of the catheter, and
- the port or ports are located at the target site in the brain.
A neurosurgical method comprising
- inserting a guide tube having a guide tube opening in a distal end thereof into a brain such that the guide tube cores a section of brain tissue;
- inserting a catheter comprising an indication and a distal section of tubing of the catheter having a distal end with a port or ports for delivering fluid to a target site within the brain into the guide tube such that the port or ports are located at the target site in the brain;
- wherein
- the distal section of tubing of the catheter has an outer diameter that is smaller than an internal diameter of the guide tube and is located to provide a recess in a distal end portion of the guide tube between the guide tube and the distal section of tubing of the catheter,
- an open end of the recess is defined by a guide tube opening and a closed end of the recess is contained within the distal end portion of the guide tube,
- the indication indicates an extent of the catheter inserted into the guide tube to locate the port or ports at the target site in the brain, and
- the catheter is inserted into the guide tube to the extent indicated by the indication such that the catheter passes through the brain tissue cored by the guide tube so that the recess is in the distal end portion of the guide tube between the guide tube and the distal section of tubing of the catheter while the port or ports are located at the target site in the brain.
A neurosurgical method comprising
- cutting a guide tube to a required length such that the guide tube has a guide tube opening in a distal end thereof;
- inserting the guide tube into a brain such that that the guide tube cores a section of brain tissue;
- and
- inserting a catheter comprising an indication and a distal section of tubing of the catheter having a distal end with a port or ports for delivering fluid to a target site within a brain into the guide tube such that the catheter passes through the brain tissue cored by the guide tube, the distal section of tubing of the catheter having an outer diameter that is smaller than an internal diameter of the guide tube, wherein
- the indication indicates an extent of the catheter that should be inserted into the guide tube to locate the port or ports at the target site in the brain and simultaneously provides a recess in a distal end section of the guide tube between the guide tube and the distal section of tubing of the catheter, the indication being adjustable along a length of the catheter, and
- an open end of the recess is defined by a guide tube opening and a closed end of the recess is contained within the distal end section of the guide tube.
Dependencies are inferred from the claim text.