Percutaneous magnetic gastrostomy

• US 9,907,513 B2
• Filed: 05/03/2013
• Issued: 03/06/2018
• Est. Priority Date: 10/07/2008
• Status: Active Grant

• Current Assignee: BARD Access Systems Incorporated (Becton, Dickinson & Co)
• Original Assignee: BARD Access Systems Incorporated (Becton, Dickinson & Co)
• Inventors: Silverstein, Fred E.
• Primary Examiner(s): Lamprecht, Joel
• Application Number:
  US13/887,166
• Publication Number:
  US 20130317338A1
• Time in Patent Office: 1,768 Days
• Field of Search: 600407, 600424, 600427
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/003 Steerable
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/3407 including a base for support on the body
• CPC Class Codes: A61B 2034/107 Visualisation of planned trajectories or target regions
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2090/373 using light, e.g. by using optical scanners
• CPC Class Codes: A61B 2090/3954 magnetic, e.g. NMR or MRI
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 5/061 Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body A61B1/00158 takes precedence
• CPC Class Codes: A61B 5/062 using magnetic field
• CPC Class Codes: A61B 5/7405 using sound
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/0127 Magnetic means; Magnetic markers
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

A medical device system includes a needle having a tip including a permanent magnet, and a magnet sensing device including a plurality of sensors configured to detect the magnetic field of the permanent magnet. The magnet sensing device is operable to localize a position of the permanent magnet relative to the magnet sensing device and to indicate a path of the needle on a display.

Claims

1. A medical device system, comprising:

a needle having a tip including a permanent magnet; and

a magnet sensing device including a plurality of sensors configured to detect a magnetic field of the permanent magnet, the magnet sensing device operable to localize a position of the permanent magnet relative to the magnet sensing device and to indicate a path of the needle on a display.

2. The system according to claim 1, wherein the path is a three-dimensional projection.

3. The system according to claim 1, wherein the magnet sensing device includes an audible indicator operable to provide a representation of the position of the permanent magnet relative to the magnet sensing device.

4. The system according to claim 1, further comprising a light emitting element coupled to the magnet sensing device.

5. The system according to claim 4, wherein the light emitting element is configured to provide visible light with sufficient brightness to penetrate tissue of a body such that the light is visible from a location inside the body.

6. The system according to claim 4, wherein the magnet sensing device and the light emitting element are in physically separable housings.

7. The system according to claim 4, wherein the light emitting element is positioned on a face of the magnet sensing device, the light emitting element operable to confirm the position of the permanent magnet relative to the magnet sensing device.