CA2507088A1 - Thermodynamically driven reversible infuser pump for use as a remotely controlled gastric band - Google Patents
Thermodynamically driven reversible infuser pump for use as a remotely controlled gastric band Download PDFInfo
- Publication number
- CA2507088A1 CA2507088A1 CA002507088A CA2507088A CA2507088A1 CA 2507088 A1 CA2507088 A1 CA 2507088A1 CA 002507088 A CA002507088 A CA 002507088A CA 2507088 A CA2507088 A CA 2507088A CA 2507088 A1 CA2507088 A1 CA 2507088A1
- Authority
- CA
- Canada
- Prior art keywords
- accumulator
- propellant
- implantable device
- volume
- implantable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- TVDKOTDHERTXGU-ISGFRBBESA-N CC[C@@H](CCCNC)/C=C\C Chemical compound CC[C@@H](CCCNC)/C=C\C TVDKOTDHERTXGU-ISGFRBBESA-N 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
- A61F2/0031—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra
- A61F2/0036—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra implantable
- A61F2/004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra implantable inflatable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0001—Means for transferring electromagnetic energy to implants
- A61F2250/0002—Means for transferring electromagnetic energy to implants for data transfer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/005—Gastric bands
- A61F5/0053—Gastric bands remotely adjustable
Abstract
An implantable artificial sphincter system provides long-term adjustment via transcutaneous energy transfer (TET), minimizing invasive adjustment through adding or removing fluid via a syringe. An infuser device provides bi-directional fluid transfer via a flexible conduit to a sphincter band, such as a gastric band, by a combination of thermodynamic actuation and a piezo-electrically disengaged drum brake assembly that thereby achieves a desirable small volume device. A propellant within a propellant cavity surrounds a metal bellows accumulator biased at body temperature to either expand or collapse the bellows accumulator with the opposite direction of movement effected by a thermal element that heats in combination with a negatively-biased propellant or cools in combination with a positively-biased propellant. A drum brake assembly locks the metal bellows accumulator in place between adjustments by thermodynamic actuation by activating piezo-electric stack actuators that disengage calipers from a brake drum attached to the bellows accumulator.
Claims (27)
1. An implantable device, comprising:
a sealed case;
an accumulator encompassed by the case and operably configured for selective movement between a first volume and a second volume;
a propellant in a cavity defined in the sealed case outside of the accumulator, the propellant having a liquid phase and a gas phase at body temperature that exerts a pressure bias upon the accumulator; and a heat flux element operably configured to adjust temperature in the cavity to reverse the bias upon the accumulator.
a sealed case;
an accumulator encompassed by the case and operably configured for selective movement between a first volume and a second volume;
a propellant in a cavity defined in the sealed case outside of the accumulator, the propellant having a liquid phase and a gas phase at body temperature that exerts a pressure bias upon the accumulator; and a heat flux element operably configured to adjust temperature in the cavity to reverse the bias upon the accumulator.
2. The implantable device of claim 1, wherein the propellant exerts a negative gauge pressure at body temperature urging the accumulator to an expanded condition, the heat flux element comprising a heating element.
3. The implantable device of claim 2, wherein the propellant comprises a flurocarbon.
4. The implantable device of claim 2, wherein the heating element comprises an inductive element heated by induced eddy currents.
5. The implantable device of claim 2, wherein the heating element comprises a resistive element.
6. The implantable device of claim 1, wherein the propellant exerts a positive gauge pressure at body temperature urging the accumulator to a collapsed condition, the heat flux element comprising a cooling element.
7. The implantable device of claim 6, wherein the propellant comprises a flurocarbon.
8. The implantable device of claim 6, wherein the cooling element comprises a Peltier effect cooling element.
9. The implantable device of claim 1, wherein the an accumulator includes a portion moved between a first and second position to selectively vary a contained fluid volume, the implantable device further comprising:
a contact surface external to the accumulator and connected to the movable portion for bi-directional movement;
a braking member proximally positioned and biased into braking contact with the contact surface; and a brake actuator operably configured to deflect the braking member from braking contact with the contact surface.
a contact surface external to the accumulator and connected to the movable portion for bi-directional movement;
a braking member proximally positioned and biased into braking contact with the contact surface; and a brake actuator operably configured to deflect the braking member from braking contact with the contact surface.
10. The implantable device of claim 9, wherein the brake actuator comprises a piezoelectric stack actuator.
11. The implantable device of claim 1, further comprising:
a sensor disposed in the enclosure and operably configured to measure thermoactuation of the accumulator; and a controller responsive to the sensor and operably configured to activate the heat flux member.
a sensor disposed in the enclosure and operably configured to measure thermoactuation of the accumulator; and a controller responsive to the sensor and operably configured to activate the heat flux member.
12. The implantable device of claim 11, wherein the sensor comprises a temperature sensor, the controller further operably configured to relate a sensed temperature to an estimated accumulator volume.
13. The implantable device of claim 11, wherein the sensor comprises a position sensor operably configured to sense movement of the accumulator.
14. An implantable apparatus, comprising:
a hydraulically inflatable therapeutic member; and an implantable device, comprising:
a sealed case, an accumulator in fluid communication with the hydraulically inflatable therapeutic member, encompassed by the case and operably configured for selective movement between a first volume and a second volume, a propellant in a cavity defined in the sealed case outside of the accumulator, the propellant having a liquid phase and a gas phase at body temperature that exerts a pressure bias upon the accumulator, and a heat flux element operably configured to adjust temperature in the cavity to reverse the bias upon the accumulator.
a hydraulically inflatable therapeutic member; and an implantable device, comprising:
a sealed case, an accumulator in fluid communication with the hydraulically inflatable therapeutic member, encompassed by the case and operably configured for selective movement between a first volume and a second volume, a propellant in a cavity defined in the sealed case outside of the accumulator, the propellant having a liquid phase and a gas phase at body temperature that exerts a pressure bias upon the accumulator, and a heat flux element operably configured to adjust temperature in the cavity to reverse the bias upon the accumulator.
15. The implantable apparatus of claim 14, wherein the propellant exerts a negative gauge pressure at body temperature urging the accumulator to an expanded condition, the heat flux element comprising a heating element.
16. The implantable apparatus of claim 15, wherein the propellant comprises a flurocarbon.
17. The implantable apparatus of claim 15, wherein the heating element comprises one selected from a group consisting of an inductive element heated by induced eddy currents, a Peltier effect element, and a resistive element.
18. The implantable apparatus of claim 14, wherein the propellant exerts a positive gauge pressure at body temperature urging the accumulator to a collapsed condition, the heat flux element comprising a cooling element.
19. The implantable apparatus of claim 16, wherein the propellant comprises a flurocarbon.
20. The implantable apparatus of claim 16, wherein the cooling element comprises a Peltier effect cooling element.
21. The implantable apparatus of claim 14, wherein an accumulator includes a portion moved between a first and second position to selectively vary a contained fluid volume, the implantable device further comprising:
a contact surface external to the accumulator and connected to the movable portion for bi-directional movement;
a braking member proximally positioned and biased into braking contact with the contact surface; and a brake actuator operably configured to deflect the braking member from braking contact with the contact surface.
a contact surface external to the accumulator and connected to the movable portion for bi-directional movement;
a braking member proximally positioned and biased into braking contact with the contact surface; and a brake actuator operably configured to deflect the braking member from braking contact with the contact surface.
22. The implantable apparatus of claim 21, wherein the brake actuator comprises a piezoelectric stack actuator.
23. The implantable apparatus of claim 14, wherein the hydraulically inflatable therapeutic member comprises an artificial sphincter band operably configured for encircling a bodily lumen and including a fluid bladder inwardly disposed to adjust an inner diameter thereof in response to a stored volume of fluid.
24. The implantable apparatus of claim 23, wherein the artificial sphincter band comprises a gastric band.
25. The implantable apparatus of claim 14, wherein the hydraulically inflatable therapeutic member comprises an exteriorly adjustable member.
26. An implantable device, comprising:
a sealed case;
an accumulator encompassed by the case and operably configured for selective movement between a first volume and a second volume;
a propellant in a cavity defined in the sealed case outside of the accumulator, the propellant having a liquid phase and a gas phase at body temperature that exerts a negative gauge pressure upon the accumulator;
a heating element operably increases temperature in the cavity to exert a positive gauge pressure upon the accumulator;
a volume braking mechanism operably configured to lock the cylindrical bellows accumulator at a current volume; and an adjustment control operably configured to activate the heating element and to release the volume braking mechanism to dispense fluid and to release the volume braking mechanism to draw fluid.
a sealed case;
an accumulator encompassed by the case and operably configured for selective movement between a first volume and a second volume;
a propellant in a cavity defined in the sealed case outside of the accumulator, the propellant having a liquid phase and a gas phase at body temperature that exerts a negative gauge pressure upon the accumulator;
a heating element operably increases temperature in the cavity to exert a positive gauge pressure upon the accumulator;
a volume braking mechanism operably configured to lock the cylindrical bellows accumulator at a current volume; and an adjustment control operably configured to activate the heating element and to release the volume braking mechanism to dispense fluid and to release the volume braking mechanism to draw fluid.
27. The implantable device of claim 26, wherein the adjustment control further comprises a secondary coil for receiving transcutaneous energy transfer for powering operation of the implantable device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/857,315 US7351240B2 (en) | 2004-05-28 | 2004-05-28 | Thermodynamically driven reversible infuser pump for use as a remotely controlled gastric band |
| US10/857,315 | 2004-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2507088A1 true CA2507088A1 (en) | 2005-11-28 |
| CA2507088C CA2507088C (en) | 2012-10-30 |
Family
ID=34941499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2507088A Expired - Fee Related CA2507088C (en) | 2004-05-28 | 2005-05-11 | Thermodynamically driven reversible infuser pump for use as a remotely controlled gastric band |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7351240B2 (en) |
| EP (1) | EP1600119B1 (en) |
| JP (1) | JP4969798B2 (en) |
| CN (1) | CN1714758B (en) |
| AU (1) | AU2005201894B2 (en) |
| BR (1) | BRPI0502118A (en) |
| CA (1) | CA2507088C (en) |
| MX (1) | MXPA05005713A (en) |
| RU (1) | RU2005116200A (en) |
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| MXPA05005713A (en) | 2005-11-30 |
| BRPI0502118A (en) | 2006-01-24 |
| EP1600119A1 (en) | 2005-11-30 |
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| AU2005201894B2 (en) | 2011-05-12 |
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