Surgical Needle

Patent metadata

Field	Value
Publication number	US-2022125476-A1
Application number	US-202017427229-A
Country	US
Kind code	A1
Filing date	Feb 6, 2020
Priority date	Feb 7, 2019
Publication date	Apr 28, 2022
Grant date	—

Abstract

A surgical needle is configured to detect whether a distal tip of the surgical needle perforates or ends up in an undesirable location, or detect whether the distal tip of the surgical needle has accessed a desired location. The surgical needle includes a hub and a body connected to the hub. The body has a hollow core and includes a sharp-pointed tip at a distal end. A first electrode is formed by the sharp-pointed tip of the body. At least a second electrode is provided around the body. The first and second electrodes are connected to a wired connector that can be plugged into an external sensing system. The external sensing system can monitor impedance, electrical parameters, or other parameters.

First claim

What is claimed is:

1 . A surgical needle comprising:
a hub; a body connected to the hub, wherein the body has a hollow core, wherein the body is made of conductive material, wherein the body includes a sharp-pointed tip at a distal end; an outer coating provided on a portion of an outer surface of the body, wherein the outer coating is non-conductive; a first electrode formed by the sharp-pointed tip of the body, wherein the outer coating is not provided on the first electrode; and at least a second electrode provided around the outer coating.

2 . The surgical needle of claim 1 further comprising an inner coating provided on at least a portion of an inner surface of the body inside the hollow core of the body.

3 . The surgical needle of claim 1 or 2 , wherein the body comprises a sharp-pointed extension attached to a tube.

4 . A surgical needle comprising:
a hub; a body connected to the hub, wherein the body has a hollow core, wherein the body includes a sharp-pointed extension that is made of conductive material, wherein the body includes a first tube made of a non-conductive material that is attached to the sharp-pointed extension; a first electrode formed by the sharp-pointed extension; and at least a second electrode provided around the tube.

5 . The surgical needle of claim 4 wherein the first tube is connected to the hub.

6 . The surgical needle of claim 4 further comprising a second tube connected between the first tube and the hub.

7 . The surgical needle of claim 6 wherein the second tube is made of a conductive material.

8 . The surgical needle of claim 6 wherein the second tube is made of a non-conductive material.

Assignees

• Texas Heart Inst
• Bayor College Of Medecine

Inventors

• Ganapathy Anand
• Burkland David
• Post Allison
• Greet Brian
• Razavi Mehdi
• John Mathews

Classifications

• A61B17/3478

  Endoscopic needles, e.g. for infusion (biopsy needles A61B10/0233; catheters with injection needles A61M25/0067) · CPC title

• A61B5/068

  using impedance sensors · CPC title

• A61B5/0538 Primary

  invasively, e.g. using a catheter · CPC title

• A61B17/3403 Primary

  Needle locating or guiding means · CPC title

• A61B2017/00247

  Making holes in the wall of the heart, e.g. laser Myocardial revascularization · CPC title