Device for non-invasive measurement of fluid pressure in an adjustable restriction device

• US 7,699,770 B2
• Filed: 02/24/2005
• Issued: 04/20/2010
• Est. Priority Date: 02/24/2005
• Status: Expired due to Fees

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Perry, Lauren S., Hassler, William L. Jr., Holscher, Russell L.
• Primary Examiner(s): Lacyk; John P
• Application Number:
  US11/065,410
• Publication Number:
  US 20060189888A1
• Time in Patent Office: 1,881 Days
• Field of Search: 128897-899, 600 29- 32, 600/37, 600/593, 604 27- 28, 604/909, 606139-141, 606/157, 606201-203, 606/213, 606/228, 606/151, 607/41
• US Class Current: 600/37
• CPC Class Codes: A61B 17/12009 Implements for ligaturing other than by clamps or clips, e.g. using a loop with a slip knot
• CPC Class Codes: A61B 17/1355 Automated control means therefor
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61F 5/0003 Apparatus for the treatment of obesity; Anti-eating devices surgical instruments or methods for treatment of obesity, devices specially adapted therefor A61B17/00; hollow or tubular parts of organs A61F2/04
• CPC Class Codes: A61F 5/0053 remotely adjustable
• CPC Class Codes: A61M 2039/0226 having means for protecting the interior of the access site from damage due to the insertion of a needle
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 2205/3327 Measuring
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3523 using telemetric means
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

A restriction system, such as an adjustable gastric band, for forming a restriction in a patient and non-invasively communicating pressure data regarding the restriction to an external monitor. The system includes a restriction device for implantation in a patient to form a restriction. The system further includes an implanted port connected to the restriction device. The port contains a working fluid for affecting the size of the restriction. The system further includes a pressure sensing system in communication with the working fluid for measuring the pressure of the working fluid and transmitting pressure measurement data to an external monitor.

Claims

1. A method for forming a restriction in a patient and non-invasively communicating pressure data regarding the restriction to an external monitor, the system comprising:

a. implanting a restriction device in a stomach of a patient to form a restriction therein, implanting a port within the patient and connecting said port to said restriction device, said port containing a working fluid for affecting the size of the restriction, and a pressure sensing system in communication with said working fluid;

b. affecting the size of the restriction by changing the volume of liquid within said device;

c. passing a liquid through said restriction device and measuring pressure spikes in said restriction device, and transmitting pressure readings to an external module, visually depicting the loading of said restriction device against peristaltic motion of the stomach during and after the passing of said liquid; and

d. measuring a size of said restriction applied by said restriction device.

2. The method according to claim 1 further including the step of non-invasively communicating the measured pressure to an external monitor.

3. The method according to claim 1 wherein said step of affecting the size of the restriction by changing the volume of liquid within said device comprises the step of using a needle to inject or withdraw fluid from an implanted injection port.