Self-regulating gastric band with pressure data processing
First Claim
1. A gastric band adjustment assembly for placement in a patient with an implantable gastric band, the band adjustment assembly comprising:
- a sensor for taking pressure readings of fluid in a lumen of an expandable portion of the gastric band;
a pump assembly connected to the lumen;
a controller for operating the pump assembly to adjust a volume of fluid in the lumen based on the pressure readings and a target pressure for the gastric band; and
a pressure adjusting module for processing the pressure readings and setting the target pressure based on the processing of the pressure readings;
wherein the processing of the pressure readings comprises determining pressure variations each comprising a difference between a maximum and a minimum pressure at first and second values for the volume of fluid, and wherein the target pressure corresponds to one of the first and second values for which the pressure variations are determined to be lower or for which the pressure variations are within an acceptable range based on data analysis of the pressure readings by the pressure adjusting module over multiple sets of the pressure readings, andwherein the setting of the target pressure comprises determining the pressure variations at the first value for the fluid volume are less than a maximum pressure variation value accessible to the pressure adjusting module, determining the pressure variations at the second value for the fluid volume are at least about the maximum pressure variation value, and setting the target pressure to correspond to the first value for the fluid volume.
9 Assignments
0 Petitions
Accused Products
Abstract
A self-regulating gastric band apparatus for adjusting stoma size is disclosed. The apparatus includes an adjustable gastric band that has an expandable portion containing a volume of fluid. A band adjustment assembly is provided for implanting with the gastric band that includes a sensor for sensing fluid pressure in the expandable portion. The band adjustment assembly further includes a pump assembly connected to the expandable portion and to a controller that can operate the pump assembly to adjust the volume of the fluid in the band based on the sensed fluid pressure. The band adjustment assembly includes memory storing an operating range relative to a target fluid pressure, and the pump assembly is operated to maintain the sensed band pressure within the operating range. The target pressure is set to maintain pressure variations below a predefined variation limit generally corresponding with satiated fill volumes for a particular patient and implanted band.
-
Citations
16 Claims
-
1. A gastric band adjustment assembly for placement in a patient with an implantable gastric band, the band adjustment assembly comprising:
-
a sensor for taking pressure readings of fluid in a lumen of an expandable portion of the gastric band; a pump assembly connected to the lumen; a controller for operating the pump assembly to adjust a volume of fluid in the lumen based on the pressure readings and a target pressure for the gastric band; and a pressure adjusting module for processing the pressure readings and setting the target pressure based on the processing of the pressure readings; wherein the processing of the pressure readings comprises determining pressure variations each comprising a difference between a maximum and a minimum pressure at first and second values for the volume of fluid, and wherein the target pressure corresponds to one of the first and second values for which the pressure variations are determined to be lower or for which the pressure variations are within an acceptable range based on data analysis of the pressure readings by the pressure adjusting module over multiple sets of the pressure readings, and wherein the setting of the target pressure comprises determining the pressure variations at the first value for the fluid volume are less than a maximum pressure variation value accessible to the pressure adjusting module, determining the pressure variations at the second value for the fluid volume are at least about the maximum pressure variation value, and setting the target pressure to correspond to the first value for the fluid volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A gastric band adjustment assembly for placement in a patient with an implantable gastric band, the band adjustment assembly comprising:
-
a sensor taking pressure readings for a volume of fluid in a lumen of an expandable portion of the gastric band; means for adjusting a stoma created by the band in the patient proximate to the lumen; a controller operating the adjusting means relative to the pressure readings and a target pressure for the gastric band; and a pressure adjusting module processing the pressure readings and setting the target pressure based on the processing of the pressure readings; wherein the processing of the pressure readings comprises determining pressure variations each comprising a difference between a maximum and a minimum pressure at first and second values for the volume of fluid, and wherein the target pressure corresponds to one of the first and second values for which the pressure variations are determined to be lower or for which the pressure variations are within an acceptable range based on data analysis of the pressure readings by the pressure adjusting module over multiple sets of the pressure readings, and wherein the setting of the target pressure comprises determining the pressure variations at the first value for the fluid volume are less than a maximum pressure variation value accessible to the pressure adjusting module, determining the pressure variations at the second value for the fluid volume are at least about the maximum pressure variation value, and setting the target pressure to correspond to the first value for the fluid volume. - View Dependent Claims (12, 13, 14, 15, 16)
-
Specification