Introducer sheath and puncture tool for the introduction and placement of a catheter in tissue
AssigneeMinnetronix, Inc.
InventorsEmily Rolfes Meyering, Elizabeth Scheurer, Aaron McCabe
Life of this patent
Estimating the term…
Abstract
Disclosed embodiments include methods and devices for introducing a sheath into a human or animal subject. Some embodiments include a puncture tool that may simultaneously deliver a sheath and a needle to a desired anatomical location. The needle may be removed and the sheath may be used to define a space that may be used to conduct a procedure.
Claims20
A medical device comprising
- a handle;
- a needle having a proximal end releasably connected to a distal end of the handle by a fastener;
- a sheath disposed around the needle, a proximal end of the sheath releasably connected to the distal end of the handle by the fastener;
- and
- a barrier disposed around the sheath and the needle, having a proximal zone and a distal zone connected by a covering.
A method for performing a procedure at a surgical site of a human or animal subject, comprising:
- receiving a medical device comprising:
- a handle;
- a needle releasably connected to the handle;
- a sheath disposed around the needle and releasably connected to the handle;
- a barrier disposed around the sheath and the needle, the barrier being in a collapsed configuration and having a proximal zone attached to the proximal end of the sheath and a distal zone connected to the proximal zone by a covering;
- deploying the barrier to an expanded configuration;
- attaching the distal zone to a tissue near the surgical site;
- inserting the sheath and the needle into the surgical site at substantially the same time using the same action;
- releasing the needle from the handle;
- removing the needle from the surgical site;
- and
- performing a procedure through the sheath.
A method for removing a volume of cerebrospinal fluid (CSF) from a subarachnoid space of human or animal subject, comprising:
- receiving a medical device comprising:
- a handle comprising a port;
- a needle releasably connected to the handle, the needle having a curved tip;
- an expandable, braided sheath disposed around the needle, the sheath releasably connected to the handle using a Luer fitting, and in fluid connection with the port;
- and
- a barrier disposed around the sheath and the needle, the barrier being in a collapsed configuration and having a proximal zone attached to the proximal end of the sheath and a distal zone connected to the proximal zone by a covering;
- expanding the barrier to an expanded configuration;
- attaching the distal zone to a tissue near the surgical site;
- inserting the sheath and the needle into the subarachnoid space at substantially the same time;
- withdrawing the needle from the sheath;
- and
- collecting CSF from the subarachnoid space through the port.
Dependencies are inferred from the claim text.