US4955385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasound targeting system for shockwave lithotripsy
Assignee: CR Bard Inc
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Filing: 1989-02-06
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Granted: 1990-09-11
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Expires: 2009-02-06
Abstract
Abstract A procedure for targeting body cavity stones for shockwave treatment including positioning a target-defining catheter mounted balloon adjacent a stone, inflating the balloon with air, focusing a shockwave generator by ultrasound on the target balloon and area immediately adjacent thereto, and deflating the target balloon.
Inventors
- 👤 Michael L. Kvalo
- 👤 Culley C. Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:23
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/08; A61B8/0833; A61B17/00; A61B17/22; A61B17/225; A61B90/00; A61B90/39; A61B17/22004; A61B2090/3925
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
96 words
A method of targeting a stone within a body cavity by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; providing a catheter including a leading end with an inflatable balloon mounted thereat, introducing the leading end of the catheter and the balloon into the body cavity, positioning the balloon immediately adjacent the stone, inflating the balloon to define a target, ultrasonically locating the target and focusing a shockwave lithotriptor relative to the located target and on the stone to target the stone for emitted shockwaves, thereby enabling treatment of the stone.
Claim 2
Independent Claim
96 words
A method of targeting a stone within a body cavity by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; providing a catheter including a leading end with an inflatable balloon mounted thereat, introducing the leading end of the catheter and the balloon into the body cavity, positioning the balloon immediately adjacent the stone, inflating the balloon to define a target, ultrasonically locating the target and focusing a shockwave lithotriptor relative to the located target and on the stone to target the stone for emitted shockwaves, thereby enabling treatment of the stone.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein the step of providing a catheter with a balloon further comprises extending said balloon forward of the leading end of the catheter.
Claim 4
Dependent Claim
26 words
The method of claim 2 wherein the inflating step further comprises inflating said balloon with a fluid medium which defines a target highly visible with ultrasound.
Claim 5
Dependent Claim
16 words
The method of claim 3 wherein the inflating step further comprises inflating the balloon with air.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein the method further comprises the step of deflating said balloon after focusing said shockwave lithotriptor.
Claim 7
Dependent Claim
60 words
The method of claim 5 wherein said stone has a distal side and said balloon has a proximal side, and wherein the step of positioning said balloon further comprises positioning said balloon on the distal side of the stone and wherein the step of focusing said shockwave lithotriptor further comprises focusing said lithotriptor adjacent the proximal side of the balloon.
Claim 8
Dependent Claim
26 words
The method of claim 6 wherein said catheter is radiopaque and the step of positioning the balloon further comprises guiding the balloon to position by fluoroscopy.
Claim 9
Dependent Claim
25 words
The method of claim 6 wherein the method further comprises the step of selectively deflating and inflating the balloon to verify its location by ultrasound.
Claim 10
Dependent Claim
26 words
The method of claim 1 wherein the inflating step further comprises inflating said balloon with a fluid medium which defines a target highly visible with ultrasound.
Claim 11
Dependent Claim
36 words
The method of claim 9 wherein the step of positioning said balloon further comprises positioning the balloon to a predetermined side of the stone whereby said stone is in a known position relative to the balloon.
Claim 12
Independent Claim
70 words
A method of targeting a ureteral stone within the ureter by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; introducing an ultrasound target within the ureter, positioning the target immediately adjacent the stone, locating the target using ultrasound and focusing a non-invasive shockwave generator relative to the target and on the stone, whereby a focused shockwave can be directed to the stone for treatment thereof.
Claim 13
Independent Claim
70 words
A method of targeting a ureteral stone within the ureter by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; introducing an ultrasound target within the ureter, positioning the target immediately adjacent the stone, locating the target using ultrasound and focusing a non-invasive shockwave generator relative to the target and on the stone, whereby a focused shockwave can be directed to the stone for treatment thereof.
Claim 14
Dependent Claim
36 words
The method of claim 11 wherein the step of positioning said target further comprises positioning said target to a predetermined side of the stone whereby said stone is in a known position relative to the target.
Claim 15
Independent Claim
124 words
A method of targeting a stone within a body cavity by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; introducing an ultrasound target within the body cavity, positioning the target immediately adjacent the stone, locating the target using ultrasound and focusing a shockwave generator relative to the target, whereby a focused shockwave is directed to the stone, said stone having a distal side and said target having a proximal side; and wherein the step of positioning said target further comprises positioning said target on the distal side of the stone, whereby said stone is in a known position relative to the target, said step of focusing the shockwave generator further comprises focusing to the proximal side of the target.
Claim 16
Independent Claim
124 words
A method of targeting a stone within a body cavity by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; introducing an ultrasound target within the body cavity, positioning the target immediately adjacent the stone, locating the target using ultrasound and focusing a shockwave generator relative to the target, whereby a focused shockwave is directed to the stone, said stone having a distal side and said target having a proximal side; and wherein the step of positioning said target further comprises positioning said target on the distal side of the stone, whereby said stone is in a known position relative to the target, said step of focusing the shockwave generator further comprises focusing to the proximal side of the target.
Claim 17
Dependent Claim
89 words
A mehtod of targeting a stone within a body cavity by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; providing a catheter including a leading end with an ultrasound target thereat, introducing the leading end of the catheter and the target into the body cavity, positioning the target immediately adjacent the stone, ultrasonically locating the target and focusing a non-invasive shockwave lithotriptor relative to the located target and on the stone to target the stone for emitted shockwaves, thereby enabling treatment of the stone.
Claim 18
Dependent Claim
89 words
A mehtod of targeting a stone within a body cavity by ultrasound for treatment of the stone by shockwave lithotripsy comprising the steps of; providing a catheter including a leading end with an ultrasound target thereat, introducing the leading end of the catheter and the target into the body cavity, positioning the target immediately adjacent the stone, ultrasonically locating the target and focusing a non-invasive shockwave lithotriptor relative to the located target and on the stone to target the stone for emitted shockwaves, thereby enabling treatment of the stone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |