Methods and apparatuses for navigating the subaracnhnoid space
First Claim
1. A method of achieving intracranial access from an entry location in spinal subarachnoid space, comprising:
- introducing a guidewire into the spinal subarachnoid space;
introducing a device over the guidewire and into the spinal subarachnoid space;
advancing the device from the spinal subarachnoid space into the intracranial subarachnoid space;
introducing a penetration apparatus through the device;
puncturing pia mater within the intracranial space using the penetration apparatus;
advancing an electrode through the device and through the pia mater; and
placing the electrode on or in brain tissue.
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Accused Products
Abstract
A method of navigating a spinal subarachnoid space in a living being includes percutaneously introducing a device into the spinal subarachnoid space at an entry location. The device has a first passageway that is sized to slidably receive, and work with, at least a guidewire. The device can be a catheter or a sheath. The method can also include advancing the device within the spinal subarachnoid space at least more than 10 centimeters from the entry location. Alternatively, the method can include advancing the device within the spinal subarachnoid space to facilitate intracranial access with a second device introduced through the first passageway. Also disclosed is a device suited for attachment to a patient'"'"'s skin, such as a sheath, that includes an elongated member, a skin-attachment apparatus having a flexible skin-attachment flap, and a valve apparatus.
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Citations
20 Claims
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1. A method of achieving intracranial access from an entry location in spinal subarachnoid space, comprising:
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introducing a guidewire into the spinal subarachnoid space; introducing a device over the guidewire and into the spinal subarachnoid space; advancing the device from the spinal subarachnoid space into the intracranial subarachnoid space; introducing a penetration apparatus through the device; puncturing pia mater within the intracranial space using the penetration apparatus; advancing an electrode through the device and through the pia mater; and
placing the electrode on or in brain tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification