Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of and apparatus for navigating medical devices in body lumens

a technology for navigating medical devices and lumens, which is applied in the field of navigating medical devices in body lumens, can solve the problems of increasing the risk of patients, fatigue of physicians, and difficulty in steering a medical device remotely with a guide wire, and achieves the effect of convenient, quick and easy positioning of a catheter

Inactive Publication Date: 2007-01-25
GARIBALDI JEFFREY M +1
View PDF99 Cites 131 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides methods and apparatuses for magnetically guiding a medical device through a lumen in the body. This involves using a magnet on the end of a guide wire and an externally applied magnetic field to orient the magnet in the body lumen. The guide wire and catheter combination can be introduced into a body lumen through a natural or surgically formed opening, and the guide wire can be advanced through the body lumen by manipulating the magnetic field or by pushing the guide wire. The catheter can be advanced over the guide wire, and the magnet can be withdrawn through the lumen of the catheter for treatment purposes. The methods and apparatuses of this invention facilitate quick, easy, and accurate positioning of a catheter or other medical device via a body lumen."

Problems solved by technology

It is a difficult and tedious process to steer a medical device remotely with a guide wire since the orientation of the guide wire is difficult to control.
Thus, these procedures can be prolonged, which increases the risk to the patient and fatigues the physician.
However, the magnet in this proposed device is attached to the catheter which can impair the ability to control the magnet.
Moreover, there is no provision for removing the magnet and leaving the catheter or other medical device in place.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of and apparatus for navigating medical devices in body lumens
  • Method of and apparatus for navigating medical devices in body lumens
  • Method of and apparatus for navigating medical devices in body lumens

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0032] A guide wire and magnet combination constructed according to the principles of this invention is indicated generally as 20 in FIG. 1. The guide wire and catheter combination 20 comprises a guide wire 22 and a catheter 24. The guide wire 22 comprises a wire 26, which is preferably made of nitinol, which is highly flexible and resists kinking, although the guide wire could be made of some other suitable material. A magnet 28 is mounted on the distal end 30 of the wire 26. This magnet may either be a permanent magnet or a permeable magnetic material. A permanent magnet is easier to orient under the application of a magnetic field, as described below, but a permeable magnetic material is easier to pull under the application of a magnetic field.

[0033] In the preferred embodiment, the magnet 28 is made of NdFeB (neodymium-iron-boron) or samarium cobalt and is sized to respond to the magnetic field that will be applied to orient the guide wire 22 in the body lumen and to be retracte...

second embodiment

[0059] A guide wire and catheter combination constructed according to this invention is indicated generally as 400 in FIGS. 15 and 16. The guide wire and catheter combination 400 comprises guide wire 402 and catheter 404. The guide wire 402 comprises a wire 406, preferably made of nitinol, which is highly flexible and resists kinking, although the guide wire could be made of some other suitable material. A magnet 408 is mounted on the distal end 410 of the wire 406. This magnet may either be a permanent magnet or a permeable magnetic material. A permanent magnet is easier to orient under the application of a magnetic field, as described below, but a permeable magnetic material is easier to pull under the application of a magnetic field.

[0060] In the preferred embodiment, the magnet 408 is made of NdFeB (neodymium-iron-boron) or samarium cobalt and is sized to respond to the magnetic field that will be applied to move the guide wire 402 through the body lumen. The magnet 408 is prefe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A guide wire combined with a catheter or medical device for moving through a body lumen to a desired position in the body with the aid of an applied magnetic field. The guide wire is provided with a magnet on its distal end that can be oriented or oriented and moved by the application of a magnetic field to the magnet. A catheter or other medical device can be advanced over the guide wire. Once the medical device is in its desired position, the magnet can be withdrawn through the lumen of the catheter. Alternatively, a guide wire with a magnet on its distal end can be docked at the distal end of a catheter or medical device and can be oriented, or oriented and moved by the application of a magnetic field.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is a continuation in part of PCT application Serial No. PCT / US98 / 02835 filed Feb. 17, 1998.FIELD OF THE INVENTION [0002] This invention relates to a method of, and apparatus for, navigating medical devices in body lumens, such as in blood vessels, the trachea, the gastrointestinal tract, or the urinary tract. BACKGROUND OF THE INVENTION [0003] Many diagnostic and therapeutic medical procedures require navigating a medical device to a particular location through lumens in the body. For example, procedures such as cardiac catheterizations and interventional neuroradiology procedures involve the introduction of medical devices through the arteries; bronchoscopies involve the introduction of medical devices through the trachea; endoscopies and colonoscopies involve the introduction of instruments through the gastrointestinal tract; and urethroscopies involve the introduction of medical devices through the urinary tract. [000...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): A61M31/00A61M5/178A61M25/00
CPCA61M25/0127A61M2025/09083A61M2025/09075A61M25/09
Inventor GARIBALDI, JEFFREY M.BLUME, WALTER M.
Owner GARIBALDI JEFFREY M