WO1993014720A1 - Method and apparatus particularly useful for treating osteoporosis - Google Patents
Method and apparatus particularly useful for treating osteoporosis Download PDFInfo
- Publication number
- WO1993014720A1 WO1993014720A1 PCT/US1993/000338 US9300338W WO9314720A1 WO 1993014720 A1 WO1993014720 A1 WO 1993014720A1 US 9300338 W US9300338 W US 9300338W WO 9314720 A1 WO9314720 A1 WO 9314720A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bone
- unfocussed
- shock waves
- wave generator
- shock
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
Definitions
- the present invention relates to a method and apparatus particularly useful for treating osteoporosis.
- Osteoporosis is a bone disorder which affects middle and old age people, especially women. It is characterized by an abnormal loss of bone tissue, and consequently by a decrease in the density of the bone. The reduction in bone density reduces the strength of the bone such as to make the afflicted person susceptible to easy fracture, particularly of the pelvis (hip), spine, femoral neck, and forearm.
- Osteoporosis affects millions of elderly people. In the USA, it affects about one out of every four women over the age of 45, and half of all women over the age of 60. Each year approximately 200,000 persons break a hip because of osteoporosis. It is therefore one of the major causes for prolonged hospitalization of the elderly; and resulting complications, particularly from hip fracture, constitute a frequent cause of death in the USA.
- a method of increasing the density and strength of the bone, particularly for preventing or treating osteoporosis comprising subjecting the bone to unfocussed compressional shock waves.
- Such unfocussed shock waves thus produce dynamic repetitive loading of the bone. This increases the mean bone density, and thereby strengthens the bone against fracture.
- the unfocussed shock waves are applied to the bone at an intensity of 50-500 atmospheres, and in the form of substantially planar,
- the unfocussed shock waves are applied by a point-source shock wave generator located at the focal point of a paraboloidal reflector which reflects the shock waves to form a substantially planar, unfocussed wavefront. More particularly, in the described preferred embodiment the shock waves are generated by a spark gap, preferably an electrical spark gap.
- shock waves are generated by an area-source shock wave generator, particularly an electromagnetic device.
- the shock waves may be generated by the same types of shock wave generators as are used in lithotripters, namely devices designed to fragment upper urinary tract stones, gallstones, etc., by focussing shock waves on the stones.
- the shock waves may be of substantially the same duration and rate as in lithotripters, except that instead of applying shock waves in a focussed condition, in the present invention the shock waves are applied in an unfocussed condition so as to repetitively and dynamically load a substantial area of the bone being treated.
- the invention also provides apparatus for increasing the density and strength of the bone, particularly for preventing or treating osteoporosis, in accordance with the above method.
- Fig. 1 diagrammatically illustrates one form of apparatus constructed in accordance with the present invention
- Fig. 2 is an enlarged view of the main parts of the apparatus of Fig. 1 involved in the treatment of bone in accordance with the present invention.
- Fig. 3 is a view similar to that of Fig. 2 but illustrating a variations in the apparatus.
- the apparatus illustrated in Fig. 1, and therein designated 2 may basically be a known lithotripter apparatus used for fragmenting stones, e.g., kidney stones, except that the shock waves produced are in an unfocussed condition rather than in a focussed condition as in a lithotripter.
- the apparatus 2 is preferably mounted on wheels 4 to make it mobile and thereby to facilitate its application to any desired bone of a patient 6, such as the pelvis or femur exhibiting osteoporosis.
- the treatment is effected by a shock wave generator, generally designated 8, projecting from one side of the apparatus 2 and adapted to be coupled to the bone being treated by an acoustical coupling 10.
- the unfocussed shock waves are applied via the acoustic coupler 10 as substantially planar, unfocussed wavefronts covering a relatively large area of the bone being treated, e.g., an area of from 10 to
- the unfocussed shock wave generator 8 is shown as including a spark gap 12 at the focal point of a paraboloidal reflector 1 .
- a reflector when the shock wave generator is located at its focal point, reflects the shock waves in a "collimated" (unfocussed) form to produce a substantial planar, unfocussed wavefront.
- Reflector 14 thus reflects the shock waves to form a substantially planar, unfocussed wavefront, which are propagated through the acoustical coupler 10, as indicated by lines 16.
- Fig. 2 The construction illustrated in Fig. 2, including a paraboloidal reflector 14 with the spark gap 12 located at its focal point, it is to be clearly distinguishes from a conventional lithotripter producing a focussed shock wave.
- the conventional lithotripter uses an ellipsoidal reflector with the shock wave generator located at one focal point thereof, so that the generated shock waves are focussed at the second focal point of the ellipsoidal reflector where the kidney stone, or other object to be fragmented, is located.
- the acoustical coupler 10, through which the generated shock waves are coupled to the patient, may also be of the type used in lithotripters.
- the acoustic coupler 10 includes a flexible envelope 18 containing a coupling liquid 20, such as water.
- a suitable acoustic gel may be provided where the envelope contacts the patient to effect good acoustic coupling to the patient.
- the acoustic coupler 10 directly contacts the flesh 22 of the patient.
- the patient's flesh has substantially the same density as the water 20 (or other liquid) used in the acoustic coupler 10, so that the generated unfocussed shock wave propagates through it in substantially the same form as through the acoustic coupler 10.
- the bone 24 of the subject is of a substantially different density from that of either the flesh 22 or the liquid 20 in the acoustic coupler 10, and therefore the unfocussed shock waves apply a compressional force against the bone 24. It wil thus be seen that the repetitve application of the unfocussed shock waves to the patient's skin will subject, the bone 24 to dynamic repetitive loads. Such loads increase the mean bone density of the bone 24, and thereby strengthen the treated bone against the possibility of fracture.
- the shock wave generator 8 is of the spark gap type. It is supplied by a high voltage generator 26 including a capacitor 28 (or bank of capacitors) charged by a high voltage source 30 and periodically discharged by a switch 32 to apply the high voltage to the spark plug 12 in the shock wave generator 8.
- the apparatus illustrated in Fig. 1 further includes a control panel, schematically indicated by box 34, and a water system, schematically illustrated by box 36, for supplying water to the acoustic coupler 10.
- a point-source type shock wave generator for generating the unfocussed shock waves as illustrated in Figs. 1 and 2
- an area-source type shock wave generator such as one that includes an electromagnetic device for generating the shock waves. Examples of such electromagnetic-type shock wave generators are described in US Patents 4,674,505, 4,796,608 and 4,782,821.
- Such an electromagnetic-type shock wave generator is schematically illustrated in Fig. 3.
- Fig. 3 See FIG. 3.
- the shock wave generator, therein designed 108 includes an electromagnetic device 112, such as a flat pancake coil, which is energized by a bank of capacitors 128 charged by a high voltage source 130 and periodically discharged through the electromagnetic device 112 by the closing of an electrical switch 132.
- the apparatus illustrated in Fig. 3 also includes an acoustical coupler 110 for propagating the generated shock waves in an unfocussed condition via the patient's flesh 122 to the patient's bone 124, in the same manner as described above with respect to Figs. 1 and 2.
- Other types of shock wave generators, as used in lithotripter devices may also be used in the present method, except of course the generated shock waves are applied in an unfocussed condition to the bone, rather than in a focussed condition.
- the shock wave generator could also be of the piezoelectric crystal type, as described for example in US Patent 4,617,931.
- the shock waves may be generated and applied for the same durations and at the same frequencies as in the conventional lithotripters.
- the unfocussed shock waves preferably are applied over a relatively large surface of the bone to be treated
- the intensity of the shock waves may be from 50-500 atmospheres.
- Each shock wave is of a duration of a few microseconds, as in a conventional lithotripter, and is preferably applied at a frequency of 1-10 shock waves per second, for a period of
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/256,542 US5529572A (en) | 1992-01-24 | 1993-01-21 | Method and apparatus particularly useful for treating osteoporosis |
JP5513269A JPH07503161A (en) | 1992-01-24 | 1993-01-21 | Methods and devices useful in treating osteoporosis |
EP93904498A EP0623013A4 (en) | 1992-01-24 | 1993-01-21 | Method and apparatus particularly useful for treating osteoporosis. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL100750 | 1992-01-24 | ||
IL10075092A IL100750A (en) | 1992-01-24 | 1992-01-24 | Apparatus particularly useful for treating osteoporosis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993014720A1 true WO1993014720A1 (en) | 1993-08-05 |
Family
ID=11063304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1993/000338 WO1993014720A1 (en) | 1992-01-24 | 1993-01-21 | Method and apparatus particularly useful for treating osteoporosis |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0623013A4 (en) |
JP (1) | JPH07503161A (en) |
AU (1) | AU3583393A (en) |
IL (1) | IL100750A (en) |
WO (1) | WO1993014720A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998057707A1 (en) * | 1997-06-17 | 1998-12-23 | Ferton Holding | Medical instrument for treating biological tissue |
WO2000045893A1 (en) | 1999-02-07 | 2000-08-10 | Medispec Ltd. | Pressure-pulse therapy apparatus for treatment of tissue |
US6755796B2 (en) | 1999-02-07 | 2004-06-29 | Medispec Ltd. | Pressure-pulse therapy apparatus |
EP1502626A1 (en) * | 1997-06-17 | 2005-02-02 | Ferton Holding SA | Medical device for treating biological tissues |
DE102005056904A1 (en) * | 2005-11-29 | 2007-05-31 | Switech Medical Ag | Shock wave producer, has parabolic reflector arranged such that it transforms shock waves generated by shock wave generator into parallel shockwaves, which are radiated parallely from generator |
EP3285661A4 (en) * | 2015-04-24 | 2018-12-05 | Sanuwave, Inc. | Tissue disinfection with acoustic pressure shock waves |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007126115A1 (en) * | 2006-05-02 | 2007-11-08 | Kagoshima University | Prevention apparatus and prevention system of osteoporotic change |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4890603A (en) * | 1987-11-09 | 1990-01-02 | Filler William S | Extracorporeal shock wave lithotripsy employing non-focused, spherical-sector shock waves |
US4905671A (en) * | 1988-01-11 | 1990-03-06 | Dornier Medizintechnik Gmbh | Inducement of bone growth by acoustic shock waves |
US4905672A (en) * | 1985-12-14 | 1990-03-06 | Dornier Medizintechnik Gmbh | Thromboses formation by means of shock waves |
US5003965A (en) * | 1988-09-14 | 1991-04-02 | Meditron Corporation | Medical device for ultrasonic treatment of living tissue and/or cells |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR8107560A (en) * | 1981-11-19 | 1983-07-05 | Luiz Romariz Duarte | ULTRASONIC STIMULATION OF BONE FRACTURE CONSOLIDATION |
DE3328051A1 (en) * | 1983-08-03 | 1985-02-14 | Siemens AG, 1000 Berlin und 8000 München | DEVICE FOR CONTACTLESS CRUSHING OF CONCRETE |
DE3709404A1 (en) * | 1987-03-21 | 1988-11-10 | Schubert Werner | Treatment device |
BG46024A1 (en) * | 1987-05-19 | 1989-10-16 | Min Na Narodnata Otbrana | Method and device for treatment of bone patology |
-
1992
- 1992-01-24 IL IL10075092A patent/IL100750A/en not_active IP Right Cessation
-
1993
- 1993-01-21 EP EP93904498A patent/EP0623013A4/en not_active Withdrawn
- 1993-01-21 JP JP5513269A patent/JPH07503161A/en active Pending
- 1993-01-21 AU AU35833/93A patent/AU3583393A/en not_active Abandoned
- 1993-01-21 WO PCT/US1993/000338 patent/WO1993014720A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4905672A (en) * | 1985-12-14 | 1990-03-06 | Dornier Medizintechnik Gmbh | Thromboses formation by means of shock waves |
US4890603A (en) * | 1987-11-09 | 1990-01-02 | Filler William S | Extracorporeal shock wave lithotripsy employing non-focused, spherical-sector shock waves |
US4905671A (en) * | 1988-01-11 | 1990-03-06 | Dornier Medizintechnik Gmbh | Inducement of bone growth by acoustic shock waves |
US5003965A (en) * | 1988-09-14 | 1991-04-02 | Meditron Corporation | Medical device for ultrasonic treatment of living tissue and/or cells |
Non-Patent Citations (1)
Title |
---|
See also references of EP0623013A4 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998057707A1 (en) * | 1997-06-17 | 1998-12-23 | Ferton Holding | Medical instrument for treating biological tissue |
EP1502626A1 (en) * | 1997-06-17 | 2005-02-02 | Ferton Holding SA | Medical device for treating biological tissues |
WO2000045893A1 (en) | 1999-02-07 | 2000-08-10 | Medispec Ltd. | Pressure-pulse therapy apparatus for treatment of tissue |
US6755796B2 (en) | 1999-02-07 | 2004-06-29 | Medispec Ltd. | Pressure-pulse therapy apparatus |
US7311678B2 (en) | 1999-02-07 | 2007-12-25 | Medispec Ltd. | Pressure-pulse therapy apparatus |
DE102005056904A1 (en) * | 2005-11-29 | 2007-05-31 | Switech Medical Ag | Shock wave producer, has parabolic reflector arranged such that it transforms shock waves generated by shock wave generator into parallel shockwaves, which are radiated parallely from generator |
EP3285661A4 (en) * | 2015-04-24 | 2018-12-05 | Sanuwave, Inc. | Tissue disinfection with acoustic pressure shock waves |
US10569106B2 (en) | 2015-04-24 | 2020-02-25 | Sanuwave, Inc. | Tissue disinfection with acoustic pressure shock waves |
Also Published As
Publication number | Publication date |
---|---|
EP0623013A1 (en) | 1994-11-09 |
IL100750A0 (en) | 1992-09-06 |
JPH07503161A (en) | 1995-04-06 |
AU3583393A (en) | 1993-09-01 |
EP0623013A4 (en) | 1995-08-09 |
IL100750A (en) | 1996-01-31 |
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