CA2338359A1 - Food intake restriction device - Google Patents

Food intake restriction device Download PDF

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Publication number
CA2338359A1
CA2338359A1 CA002338359A CA2338359A CA2338359A1 CA 2338359 A1 CA2338359 A1 CA 2338359A1 CA 002338359 A CA002338359 A CA 002338359A CA 2338359 A CA2338359 A CA 2338359A CA 2338359 A1 CA2338359 A1 CA 2338359A1
Authority
CA
Canada
Prior art keywords
reservoir
fluid
servo
hydraulic
energy
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
Application number
CA002338359A
Other languages
French (fr)
Other versions
CA2338359C (en
Inventor
Peter Forsell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obtech Medical AG
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2338359A1 publication Critical patent/CA2338359A1/en
Application granted granted Critical
Publication of CA2338359C publication Critical patent/CA2338359C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Abstract

A food intake restriction device for forming a stoma opening in the stomach or esophagus of a patient comprises an elongated restriction member (2), forming means for forming the elongated restriction member into at least a substantially closed loop around the stomach or esophagus, said loop defining a restriction opening, and an adjustment means for adjusting the restriction member in said loop to change the size of the restriction opening. The device further comprises implantable hydraulic operation means (6, 8) provided for operating the adjustment means in a non-invasive manner, and an implantable reservoir (4) containing a predetermined amount of hydraulic fluid. The hydraulic operation means are adapted to operate the adjustment means by using the hydraulic fluid of the reservoir.

Claims (44)

1. A food intake restriction device for forming a stoma opening in the stomach or esophagus of a patient, the device comprising an elongated restriction member (2), forming means for forming the elongated restriction member into at least a substantially closed loop around the stomach or esophagus, said loop defining a restriction opening (3), and an adjustment means (5) for adjusting the restriction member in said loop to change the size of the restriction opening, characterised in that implantable hydraulic operation means (6,8;10;12;10,14;76-86) are provided for operating the adjustment means (5) in a non-invasive manner, and that an implantable reservoir (4;10;16) containing a predetermined amount of hydraulic fluid is provided, the hydraulic operation means being adapted to operate the adjustment means by using the hydraulic fluid of the reservoir.
2. The device according to claim 1, wherein the adjustment means comprises an expandable cavity (5) in the restriction member (2), the size of the restriction opening (3) being reduced upon expansion of the cavity and increased upon contraction of the cavity, and the hydraulic operation means (6,8;10;12;10,14;76-86) are adapted to distribute hydraulic fluid from the reservoir (4;10;16) to expand the cavity, and to distribute hydraulic fluid from the cavity to the reservoir to contract the cavity, to thereby control the size of the restriction opening.
3. The device according to claim 2, wherein the reservoir (10) defines a chamber (42;64) for said predetermined amount of fluid and the hydraulic operation means are adapted to change the size of the chamber.
4. The device according to claim 3, wherein the hydraulic operation means comprises first and second wall portions (48;66) of the reservoir (10), which are displaceable relative to each other to change the size of the chamber (42;64) of the reservoir.
5. The device according to claim 4, wherein the first and second wall portions (66) of the reservoir are designed to be displaceable relative to each other by manual manipulation thereof.
6. The device according to claim 4, wherein the first and second wall portions of the reservoir (10) are displaceable relative to each other by magnetic means, hydraulic means, or electric control means.
7. The device according to claim 4, wherein the hydraulic operation means are adapted to distribute fluid from the reservoir (10) to the cavity (5) of the restriction member (2) in response to a predetermined first displacement of the first wall portion (48;66) of the reservoir relative to the second wall portion of the reservoir and to distribute fluid from the cavity to the reservoir in response to a predetermined second displacement of the first wall portion relative to the second wall portion.
8. The device according to claim 2, wherein the hydraulic operation means comprise an activatable pump (6,12) adapted to pump fluid between the reservoir (4) and the cavity (5) of the restriction member (2).
9. The device according to claim 8, wherein the pump comprises a first activation member for activating the pump to pump fluid from the reservoir (4) to the cavity (5) of the restriction member (2) and a second activation member for activating the pump to pump fluid from the cavity to the reservoir.
10. The device according to claim 9, wherein the first and second activation members are operable by manual manipulation thereof .
11. The device according to claim 9, wherein at least one of the activation members is adapted to operate when subjected to an external pressure exceeding a predetermined magnitude.
12. The device according to claim 9, wherein at least one of the first and second activating members are operable by magnetic means, hydraulic means, or electric control means.
13. The device according to claim 1, wherein the restriction member is non-inflatable, and the adjustment means is adapted to mechanically adjust the restriction member in said loop.
14. The device according to claim 2, wherein the hydraulic operation means comprise a servo means (10,14;44,50-56;76-86).
15. The device according to claim 14, wherein the hydraulic operation means comprise first and second wall portions of the reservoir (16;40;62;78), and the servo means (10,14;44,50-56;80-86) is adapted to provide relative displacement between the first and second wall portions of the reservoir to charge the size of the chamber of the reservoir.
16. The device according to claim 15, wherein the servo means comprises magnetic means, or electric means.
17. The device according to claim 15, wherein the servo means comprises hydraulic means (10,14, 76-86).
18. The device according to claim 17, wherein the servo means comprises a servo reservoir defining a chamber containing servo fluid, and the hydraulic operation means comprise first and second wall portions of the servo reservoir, which are displaceable relative to each other to change the size of the chamber of the servo reservoir.
19. The device according to claim 18, wherein the first and second wall portions of the servo reservoir are designed to be displaceable relative to each other by manual manipulation thereof.
20. The device according to claim 18, wherein the first and second wall portions of the servo reservoir are displaceable relative to each other by magnetic means, hydraulic means, or electric control means.
21. The device according to claim 14, wherein the servo means comprises a servo reservoir (14) and a fluid supply reservoir (10) connected in a closed system and containing a further predetermined amount of fluid.
22. The device according to claim 21, wherein the fluid supply reservoir (10) defines a chamber for the further predetermined amount of fluid and the hydraulic operation means are adapted to change the size of the chamber and thereby control the amount of fluid in the servo reservoir (14).
23. The device according to claim 22, wherein the fluid supply reservoir (10) comprises first and second wall portions, which are displaceable relative to each other to change the size of the chamber of the fluid supply reservoir.
24. The device according to claim 23, wherein the fluid supply reservoir (10) increases the amount of fluid in the servo reservoir (14) in response to a predetermined first displacement of the first wall portion of the fluid supply reservoir relative to the second wall portion of the fluid supply reservoir and decreases the amount of fluid in the servo reservoir in response to a predetermined second displacement of the first wall portion of the fluid supply reservoir relative to the second wall portion of the fluid supply reservoir.
25. The device according to any one of claims 1-24, further comprising a wireless remote control means (44,126,132-144) for non-invasively controlling the hydraulic operation means (6,8;10;12;10,14;76-86).
26. The device according to claim 25, wherein the remote control means (44,126,132-144) comprises separate signal transmitting means (132,136) and implantable signal receiving means (134,138).
27. The device according to claim 26, wherein the signal receiving means (134,138) comprises a control unit (138) adapted to control the hydraulic operation means (6,8;10;12;10,14;76-86) in response to signals received from the signal transmitting means (132, 136).
28. The device according to claim 27, further comprising an implantable energizer unit (136) for providing energy to energy consuming components of of the device implanted in the patient.
29. The device according to claim 28, further comprising an implantable motor (44) for operating the hydraulic operation means (6,8;10;12;10,14;76-86).
30. The device according to claim 29, wherein the control unit (138) is adapted to power the motor (44) with energy provided by the energizer unit (136) in response to signals received from the signal transmitting means (132,136).
31. The device according to claim 28, wherein the energizer unit (126) is adapted to transfer energy from the signals, as they are transmitted to the signal receiving means (134,138), into electric energy.
32. The device according to any of the preceding claims, wherein the forming means is adapted to form the restriction member (2) into a loop having a predetermined size.
33. The device according to claim 25, wherein the remote control means (44,126,132-144) comprises means for wireless transfer of energy from outside the patient's body to energy consuming implantable components of the device.
34. The device according to claim 33, further comprising an implantable motor (44) for operating the hydraulic operation means (6;8;10;12;10,14;76-86), said means for wireless transfer of energy being adapted to directly power the motor with transferred energy.
35. The device according to claim 34, wherein the energy transferred by said means for transfer of energy comprises wave signals.
36. The device according to claim 34, wherein the energy transferred by said means for transfer of energy comprises an electric field or a magnetic field.
37. The device according to claim 1, wherein the adjustment means (5) is adapted to change the size of the restriction opening (3) such that the outer circumferential confinement surface of the restriction member (2) is changed.
38. The device according to claim 1, wherein the adjustment means (5) is adapted to change the size of the restriction opening (3) such that the outer circumferential confinement surface of the restriction member (2) is unchanged.
39. The device according to claim 26, wherein the signal transmitting means (132,136) and signal receiving means (134,138) are adapted to transmit and receive signals in the form of digital pulses.
40. The device according to claim 39, wherein the digital pulses comprise a magnetic field or an electric field.
41. The device according to any of claims 26 and 27, wherein the signal transmitting means (132,136) and signal receiving means (134,138) are adapted to transmit and receive wave signals.
42. The device according to claim 41, wherein the wave signals comprise electromagnetic waves, sound waves or carrier waves for remote control signals.
43. The device according to any of claims 28,31,33-36, wherein the energizer unit (136) is adapted to transfer the energy from the signals into direct or alternating current.
44. The device according to claim 25, wherein the remote control means (44,126,132-144) is capable of obtaining information on the size of the restriction opening (3) and to command the adjustment means (5) to adjust the restriction member (2) in response to obtained information.
CA002338359A 1998-08-13 1999-08-12 Food intake restriction device Expired - Lifetime CA2338359C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/133,322 1998-08-13
US09/133,322 US6460543B1 (en) 1998-08-13 1998-08-13 Non-injection port food intake restriction device
PCT/SE1999/001367 WO2000009049A1 (en) 1998-08-13 1999-08-12 Food intake restriction device

Publications (2)

Publication Number Publication Date
CA2338359A1 true CA2338359A1 (en) 2000-02-24
CA2338359C CA2338359C (en) 2009-12-15

Family

ID=22458042

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002338359A Expired - Lifetime CA2338359C (en) 1998-08-13 1999-08-12 Food intake restriction device

Country Status (11)

Country Link
US (2) US6460543B1 (en)
EP (3) EP1554997B1 (en)
AT (2) ATE293415T1 (en)
AU (1) AU746371B2 (en)
BR (1) BR9912794A (en)
CA (1) CA2338359C (en)
DE (2) DE69924851T2 (en)
DK (1) DK1105075T3 (en)
ES (1) ES2239458T3 (en)
MX (1) MXPA01000598A (en)
WO (1) WO2000009049A1 (en)

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