US5520680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing an animal organ by facilitating the atrophy thereof
Assignee: Tufts Medical Center Inc
•
Filing: 1995-06-22
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Granted: 1996-05-28
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Expires: 2015-06-22
Abstract
Abstract A method is provided for facilitating the atrophying of a tonsil or adenoid ("organ") to cause the gradual removal thereof from the patient. A laser is positioned adjacent the organ, the wavelength for the laser being in the 700 nm to 1100 nm range and having energy sufficient to cause coagulation of blood in at least a significant number of the organ vessels over a period of several minutes, but not so much energy as to kill significant tissue of the organ or to cause significant damage to tissue adjacent to the organ. The laser is then turned on to irradiate the organ with laser energy and the entire exposed area of the organ is painted or otherwise irradiated. Irradiation continues until a selected condition of the organ, tissue adjacent the organ and/or laser source occurs. The organ may be cooled, for example by irrigation, during irradiation, and the organ may be insulated from surrounding tissue and/or an exogenous chromophore may be applied to the organ, the former to minimize damage to surrounding tissue and the latter to enhance absorption of laser energy by the organ.
Inventors
- 👤 Stanley M. Shapshay
- 👤 Michail M. Pankratov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:54
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B17/00; A61B17/24; A61B17/26
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
162 words
A method for facilitating the atrophy of a tonsil organ or an adenoid organ, which organ contains blood filled vessels to cause the gradual removal of the organ, the method comprising the steps of: positioning a source of laser energy having a wavelength in the 700 nm to 1100 nm range adjacent to, but not touching the organ, the laser having an energy sufficient to cause coagulation of blood in at least a significant number of the organ vessels over a period of several minutes, but not so much energy as to kill significant tissue of the organ or to cause significant damage to tissue adjacent the organ on which the laser might spuriously impinge; irradiating the organ with laser energy from the source; monitoring at least one selected parameter of at least one of the organ, tissue adjacent the organ and the laser source; and terminating irradiation on the detection of a selected condition for the monitored at least one parameter.
Claim 2
Independent Claim
162 words
A method for facilitating the atrophy of a tonsil organ or an adenoid organ, which organ contains blood filled vessels to cause the gradual removal of the organ, the method comprising the steps of: positioning a source of laser energy having a wavelength in the 700 nm to 1100 nm range adjacent to, but not touching the organ, the laser having an energy sufficient to cause coagulation of blood in at least a significant number of the organ vessels over a period of several minutes, but not so much energy as to kill significant tissue of the organ or to cause significant damage to tissue adjacent the organ on which the laser might spuriously impinge; irradiating the organ with laser energy from the source; monitoring at least one selected parameter of at least one of the organ, tissue adjacent the organ and the laser source; and terminating irradiation on the detection of a selected condition for the monitored at least one parameter.
Claim 3
Dependent Claim
43 words
A method as claimed in claim 1 wherein at least one of the selected parameters is color of the organ, and wherein the selected condition is the color of the organ becoming at least slightly blanched over substantially all of said exposed area.
Claim 4
Dependent Claim
41 words
A method as claimed in claim 1 wherein at least one of the selected parameters is temperature of surrounding tissue, and wherein the selected condition is the temperature reaching a selected value above which damage to the surrounding tissue might occur.
Claim 5
Dependent Claim
62 words
A method as claimed in claim 1 wherein at least one of the selected parameters is temperature of the organ, and wherein the selected condition is the temperature of the organ reaching a value at which at least one of coagulation for said at least a significant number of the organ vessels should occur and significant damage to the organ might occur.
Claim 6
Dependent Claim
51 words
A method as claimed in claim 1 wherein at least one of the selected parameters is time of irradiation by the laser source; and wherein the selected condition is the irradiation being performed for a period sufficient for coagulation of said at least significant number of the organ vessels to occur.
Claim 7
Dependent Claim
15 words
A method as claimed in claim 1 including the step cooling the organ during irradiation.
Claim 8
Dependent Claim
26 words
A method as claimed in claim 6 wherein said cooling step includes the step of irrigating the organ with a saline solution during the irradiation step.
Claim 9
Dependent Claim
26 words
A method as claimed in claim 1 including the step performed at some time prior to the irradiation step of insulating surrounding tissue from the organ.
Claim 10
Dependent Claim
32 words
A method as claimed in claim 8 wherein said insulating step includes the step of injecting a saline solution adjacent to the organ at the junction between the organ and surrounding tissue.
Claim 11
Dependent Claim
30 words
A method as claimed in claim 1 including the step performed at some time prior to the irradiation step of administering a local anesthetic to the organ and surrounding tissue.
Claim 12
Dependent Claim
38 words
A method as claimed in claim 1 including the step performed at some time prior to the irradiation step of applying to the organ an exogenous chromophore which efficiently absorbs energy at the wavelength of said laser energy.
Claim 13
Dependent Claim
37 words
A method as claimed in claim 11 wherein the laser source includes a diode laser operated at a wavelength in the 785 nm to 815 nm range, and wherein the exogenous chromophore is indocyanine green (ICG) dye.
Claim 14
Dependent Claim
24 words
A method as claimed in claim 1 wherein the energy of the laser source is in a range from 5 watts to 15 watts.
Claim 15
Dependent Claim
42 words
A method as claimed in claim 1 wherein the positioning step includes the step of passing the distal end of an optical fiber connected at its proximal end to a laser through a patient's mouth to a position adjacent the selected organ.
Claim 16
Dependent Claim
21 words
A method as claimed in claim 1 wherein said irradiation step is performed over the entire exposed area of the organ.
Claim 17
Dependent Claim
39 words
A method as claimed in claim 15 wherein said irradiation step includes the step of moving the source relative to the organ during irradiation to paint the entire area of the organ which is exposed to the laster source.
Claim 18
Dependent Claim
33 words
A method as claimed in claim 1 wherein the method is repeated at least once for a given organ, there being at least a selected time interval between each performance of the method.
Claim 19
Dependent Claim
40 words
A method as claimed in claim 1 including the steps of monitoring the atrophying of the organ at intervals after the termination step, and repeating the method if the organ is found not to be atrophying at the desired rate.
References Cited (Backward Citations)
US5207668A
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US4737628A
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US5188633A
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US5242437A
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US5380317A
Cited
US5207672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |