Hydraulic gastric band with collapsible reservoir
First Claim
1. A self-regulating gastric band system, comprising:
- a gastric band having an inflatable member;
a fill tube having a fill tube lumen in fluid communication with the inflatable member;
a reservoir having a reservoir lumen separate from the inflatable member and the fill tube lumen and being positioned longitudinally along and adjacent a substantial portion of the fill tube lumen, and being in fluid communication with the fill tube lumen and configured to hold a fluid;
a pump coupled between the reservoir and the inflatable member and configured to transfer the fluid between the reservoir and the inflatable member through the fill tube lumen;
a sensor coupled to the inflatable member and configured to sense an instantaneous pressure of the fluid in the inflatable member; and
a controller coupled to the pump and receptive to the sensor and configured to receive stored pressure data and automatically control the transfer of the fluid between the reservoir and the inflatable member through the fill tube lumen based on a comparison between the stored pressure data and the instantaneous pressure of the fluid in the inflatable member.
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Accused Products
Abstract
A self-regulating gastric band apparatus for adjusting stoma size. The apparatus includes an adjustable gastric band that has an inner ring expanding with injected fluid. A band adjustment assembly is provided for implanting with the gastric band that includes a sensor for sensing fluid pressure in the inner ring. The band adjustment assembly further includes a pump assembly connected to the expandable inner ring 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 being set to maintain pressure variations below a predefined variation limit generally corresponding with satiated fill volumes for a particular patient and implanted band. An elongated fluid reservoir may extend along a substantial part of a fill tube. A balloon-like expandable fluid reservoir in fluid communication with the pump assembly may store a volume of the fluid for adjusting the volume of fluid in the lumen. A protective outer sheath may be provided around the exterior of an expandable fluid reservoir in both a first, deflated state, and a second, inflated state of the reservoir.
621 Citations
15 Claims
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1. A self-regulating gastric band system, comprising:
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a gastric band having an inflatable member; a fill tube having a fill tube lumen in fluid communication with the inflatable member; a reservoir having a reservoir lumen separate from the inflatable member and the fill tube lumen and being positioned longitudinally along and adjacent a substantial portion of the fill tube lumen, and being in fluid communication with the fill tube lumen and configured to hold a fluid; a pump coupled between the reservoir and the inflatable member and configured to transfer the fluid between the reservoir and the inflatable member through the fill tube lumen; a sensor coupled to the inflatable member and configured to sense an instantaneous pressure of the fluid in the inflatable member; and a controller coupled to the pump and receptive to the sensor and configured to receive stored pressure data and automatically control the transfer of the fluid between the reservoir and the inflatable member through the fill tube lumen based on a comparison between the stored pressure data and the instantaneous pressure of the fluid in the inflatable member. - View Dependent Claims (2, 3, 4, 5)
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6. A self-regulating gastric band system, comprising:
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a gastric band having an inflatable member disposed around an inner periphery thereof; a fill tube having a fill tube lumen in fluid communication with the inflatable member; a reservoir having a reservoir lumen separate from the inflatable member and the fill tube lumen and being positioned longitudinally along and adjacent a substantial portion of the fill tube lumen, and being in fluid communication with the fill tube lumen and configured to store a fluid; a pump coupled between the reservoir and the inflatable member and configured to transfer the fluid between the reservoir and the inflatable member through the fill tube lumen; a sensor capable of receiving stored pressure data and configured to sense an instantaneous pressure of the fluid in the inflatable member and output an adjustment signal based on a comparison between the instantaneous pressure of the fluid in the inflatable member and the stored pressure data; and a controller coupled to the pump and receptive to the sensor and configured to automatically control the transfer of the fluid between the reservoir and the inflatable member through the fill tube lumen using the adjustment signal received from the sensor. - View Dependent Claims (7, 8, 9)
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10. A self-regulating gastric band system, comprising:
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a gastric band having an inflatable member; a fill tube having a fill tube lumen in fluid communication with the inflatable member; a reservoir having a reservoir lumen separate from the inflatable member and the fill tube lumen and being positioned longitudinally along and adjacent a substantial portion of the fill tube lumen, and being in fluid communication with the fill tube lumen and configured to store a fluid; a pump coupled between the reservoir and the inflatable member and configured to transfer the fluid between the reservoir and the inflatable member through the fill tube lumen; a sensor configured to sense an instantaneous parameter of the gastric band; and a controller coupled to the pump and receptive to the sensor and configured to receive stored parameter data and automatically control the transfer of the fluid between the reservoir and the inflatable member through the fill tube lumen based on a comparison between the stored parameter data and the instantaneous parameter of the gastric band. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification