Patent US4237091A successfully refreshed from Google Patents.
EP0206331A2
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Apparatus for disintegrating calculus by underwater shock wave from outside human body
Assignee: Yachiyoda Sangyo Co Ltd
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Filing: 1986-06-25
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Granted: —
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Expires: 2006-06-25
Abstract
Abstract There is disclosed an apparatus for disintegrating a calculus (10) by underwater shock wave from outside a human body (8) of the type that there are provided a shock wave generation chamber (1) of which an inner surface is formed into a shape of a part of a pseudo-ellipsoid of revolution and which is filled with liquid (4), and a shock wave generation source (2) for generating shock wave at a first focus (f i ) of the pseudo-ellipsoid of revolution so that a calculus (10) in a human body (8) set at a second focus (f 2 ) of the pseudo-ellipsoid of revolution may be disintegrated by the generated shock wave. For an easy handling there is provided a flexible container (3) containing the liquid (4), and the shock wave generation chamber (1) is so positioned that the interior of the chamber (1) may be filled, through an open portion thereof, with the liquid (4) in the foregoing container (3).
Inventors
- 👤 Kazuyoshi Takayama
- 👤 Masaaki Kuwahara
- 👤 Shuzo Kimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 01:06
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/225; A61B17/2251; G; G10; G10K; G10K11/00; G10K11/004; G10K15/00; G10K15/04; G10K15/043; A61B2017/2253
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
An apparatus for disintegrating a calculus (10) by underwater shock wave from outside a human body(8)of the type that there are provided a shock wave generation chamber (1) of which an inner surface is formed into a shape of a part of a pseudo-ellipsoid of revolution and which is filled with liquid (4), and a shock wave generation source (2) for generating shock wave at a first focus (f 1 ) of the pseudo-ellipsoid of revolution so that a calculus (10) in a human body (8) set at a second focus (f 2 ) of the pseudo-ellipsoid of revolution may be disintegrated by the generatedshock wave, characterized in that there is provided a flexible container (3) containing the liquid (4), and the shock wave generation chamber (1) is so positioned that the interior of the chamber (1) may be filled, through an open portion thereof, with the liquid (4) in the foregoing container (3).
Claim 2
Independent Claim
154 words
An apparatus for disintegrating a calculus (10) by underwater shock wave from outside a human body(8)of the type that there are provided a shock wave generation chamber (1) of which an inner surface is formed into a shape of a part of a pseudo-ellipsoid of revolution and which is filled with liquid (4), and a shock wave generation source (2) for generating shock wave at a first focus (f 1 ) of the pseudo-ellipsoid of revolution so that a calculus (10) in a human body (8) set at a second focus (f 2 ) of the pseudo-ellipsoid of revolution may be disintegrated by the generatedshock wave, characterized in that there is provided a flexible container (3) containing the liquid (4), and the shock wave generation chamber (1) is so positioned that the interior of the chamber (1) may be filled, through an open portion thereof, with the liquid (4) in the foregoing container (3).
Claim 3
Dependent Claim
86 words
An apparatus as claimed in claim 1 , characterized in that at least either one of the human body (8) placed on a bed (12) and the shock wave generation chamber (1) is arranged to be movable upwards and downwards so that the flexible container (3) may be brought into contact with the human body (8) and, under this contact condition, the calculus (10) existing in the human body (8) may be set at the second focus (f 2 ) position of the pseudo-ellipsoid of revolution.
Claim 4
Dependent Claim
21 words
An apparatus as claimed in claim 1 or 2, characterized in that the shock wave generation source comprises a microexplosive (2).
Claim 5
Dependent Claim
30 words
An apparatus as claimed in claim 1 or 2, characterized in that the shock wave generation source comprises a spark gap (23) connected to a high voltage electric source (21).
Claim 6
Dependent Claim
30 words
An apparatus as claimed in claim 1 or 2, characterized in that the shock wave generation source comprises a supersonic wave generation element (26) connected to an electric source (24).
Claim 7
Dependent Claim
75 words
An apparatus as claimed in claim 1 or 2, characterized in that the shock wave generation source comprises a laser means (27), an optical fiber means (28) for transmitting a laser beam outputted from the laser means (27), and a focusing lens (29) for focusing the laser beam outputted from the optical fiber means (28) on the first focus position (f 1 ) of the pseudo-ellipsoid of revolution in the shock wave generation chamber (1).
Claim 8
Dependent Claim
63 words
An apparatus as claimed in claim 3, characterized in that a trigger means (13) for the microexplosive (2)cornprises an initiating explosive (14) which is in contact with the microexplosive (2), an optical fiber means (15) which is in contact, at its one end, with the initiating explosive (14), and a laser generation means connected to the other end of the optical fiber means.
Claim 9
Dependent Claim
69 words
An apparatus as claimed in claim 3, characterized in that a trigger means (13) for the microexplosive (2) comprises an initiating explosive (14) which is in contact with the microexplosive (2), an electric heater (16) embedded therein, an electric wire (17) which is connected, at its one end, to the electric heater (16), and a switch box having a dry battery electric source connected to the other end thereof.
Claim 10
Dependent Claim
89 words
An apparatus as claimed in claim 3, characterized in that a trigger means (13) for the microexplosive(2) comprises an initating explosive (14) adhered to the microexplosive (2) contained in an easily breakable casing (18), a triggering rod (19) which is applied, at its tapered forward end, to the initiating explosive (14), a receiving rod (20) for holding the casing (18) between the same and the triggering rod (19), and a striking means for giving a blow at a high speed to an outer end of the triggering rod (19).
References Cited (Backward Citations)
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