Patent US2689814A successfully refreshed from Google Patents.
US5728129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distal atherectomy catheter
Assignee: American Biomed Inc
•
Filing: 1995-06-07
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Granted: 1998-03-17
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Expires: 2015-06-07
Abstract
Abstract A distal atherectomy catheter is disclosed for removing obstructions, plaque, stenosis, occlusions, or the like from an artery or coronary vessel. The catheter comprises a flexible, hollow catheter tube. A cutting element is located within a cylindrical housing mounted at the distal end of the catheter tube. The cutting element is connected to a hollow, flexible drive shaft concentrically located within the catheter tube. The cutting element housing includes a side opening window or port providing access to the interior of the housing. An idler shaft journaled about the drive shaft provides a non-rotating surface adjacent the cutting element. An annular return passage is defined between the catheter tube and the flexible drive shaft providing a discharge passage communicating with external aspirating means for collection of cuttings removed by the cutting element from the artery or coronary vessel. A guide wire may extend through the catheter tube and cutting element for guiding the catheter to the occluded site in a vessel. The drive cable is connected to a drive motor housed within a handle housing. The catheter tube and cutter housing are enclosed within a sheath extending from the distal end of the catheter to the handle housing.
Inventors
- 👤 David P. Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/320783; A61B17/22; A61B2017/22038; A61B2017/320004; A61B90/00; A61B90/08; A61B2090/0801; A61B2090/08021; A61B2217/00; A61B2217/002; A61B2217/005
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
145 words
An atherectomy catheter for removal of occlusive material in a blood vessel, tract, or cavity comprising: (a) a catheter tube; (b) a cutter head assembly attached to the distal end of said catheter tube; (c) a slidably adjustable sheath extending about and enclosing said catheter tube and said cutter head assembly; (d) a flexible, hollow drive shaft extending through said catheter tube; (e) a rotary cutter mounted within said cutter head assembly and connected to said flexible drive means; (f) power means connected to the end of said catheter tube for rotating said cutter within said cutter head assembly for excising material blocking the blood vessel; (g) an idler sleeve journaled about said drive shaft adjacent said rotary cutter; and (h) means connected to said catheter tube for evacuating the excised material from the blood vessel through said cutter head assembly and said catheter tube.
Claim 2
Dependent Claim
145 words
An atherectomy catheter for removal of occlusive material in a blood vessel, tract, or cavity comprising: (a) a catheter tube; (b) a cutter head assembly attached to the distal end of said catheter tube; (c) a slidably adjustable sheath extending about and enclosing said catheter tube and said cutter head assembly; (d) a flexible, hollow drive shaft extending through said catheter tube; (e) a rotary cutter mounted within said cutter head assembly and connected to said flexible drive means; (f) power means connected to the end of said catheter tube for rotating said cutter within said cutter head assembly for excising material blocking the blood vessel; (g) an idler sleeve journaled about said drive shaft adjacent said rotary cutter; and (h) means connected to said catheter tube for evacuating the excised material from the blood vessel through said cutter head assembly and said catheter tube.
Claim 3
Dependent Claim
46 words
The apparatus of claim 1 further including means cooperative with said cutter head assembly for moving said cutter head assembly laterally, and wherein a portion of said cutter head assembly includes a window opening for occlusive material to project therethrough for removal by said rotary cutter.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 including deflector means for laterally deflecting said cutter head assembly against the occlusive material blocking the blood vessel.
Claim 5
Dependent Claim
21 words
The apparatus of claim 1 wherein said rotary cutter has rearwardly facing cutting means for cutting material obstructing the blood vessel.
Claim 6
Dependent Claim
51 words
The apparatus of claim 1 wherein said cutter head assembly is generally cylindrical in shape centered along and around an axis of rotation therethrough, and said cutter head assembly includes an axial guide shaft for guiding said rotating cutter in reciprocating fashion forwardly and rearwardly thereof to form a cutting action.
Claim 7
Dependent Claim
22 words
The apparatus of claim 2 including means for adjusting the length of said window opening to accommodate obstructive materials of various lengths.
Claim 8
Dependent Claim
22 words
The apparatus of claim 2 including an enlarged aspiration channel formed by said sheath and said catheter tube adjacent said window opening.
Claim 9
Dependent Claim
34 words
The apparatus of claim 1 including a retaining collar mounted on said drive shaft spaced from each end of said idler sleeve for limiting axial movement of said idler shaft along said drive shaft.
Claim 10
Dependent Claim
17 words
The apparatus of claim 1 including detent sleeve means slidably connecting said sheath about said catheter tube.
Claim 11
Dependent Claim
19 words
The apparatus of claim 1 wherein said rotary cutter includes a rearward facing grinding surface embedded with diamond chips.
Claim 12
Dependent Claim
15 words
The apparatus of claim 1 wherein said rotary cutter includes rearward facing helical grinder segments.
Claim 13
Dependent Claim
15 words
The apparatus of claim 1 wherein said rotary cutter includes a rearward facing flutted surface.
Claim 14
Dependent Claim
17 words
The apparatus of claim 1 wherein said sheath includes a fiber optics lumen extending the length thereof.
Claim 15
Dependent Claim
20 words
The apparatus of claim 1 wherein said sheath includes a sonic array mounted about the distal end of said sheath.
Claim 16
Dependent Claim
159 words
An atherectomy catheter for removal of occlusive material in a blood vessel, tract, or cavity comprising: (a) a catheter tube; (b) a cutter head assembly attached to the distal end of said catheter tube; (c) a slidably adjustable sheath extending about and enclosing said catheter tube and said cutter head assembly; (d) a flexible, hollow drive shaft extending through said catheter tube; (e) a rotary cutter mounted within said cutter head assembly and connected to said flexible drive means; (f) power means connected to the end of said catheter tube for rotating said cutter within said cutter head assembly for excising material blocking the blood vessel; (g) an idler sleeve journaled about said drive shaft adjacent said cutter, said idler sleeve located between spaced stop collars mounted about said drive shaft; (h) detent sleeve means slidably connecting said sheath about said catheter tube; and (i) means connected to said catheter tube for evacuating excised material from the blood vessel.
Claim 17
Dependent Claim
159 words
An atherectomy catheter for removal of occlusive material in a blood vessel, tract, or cavity comprising: (a) a catheter tube; (b) a cutter head assembly attached to the distal end of said catheter tube; (c) a slidably adjustable sheath extending about and enclosing said catheter tube and said cutter head assembly; (d) a flexible, hollow drive shaft extending through said catheter tube; (e) a rotary cutter mounted within said cutter head assembly and connected to said flexible drive means; (f) power means connected to the end of said catheter tube for rotating said cutter within said cutter head assembly for excising material blocking the blood vessel; (g) an idler sleeve journaled about said drive shaft adjacent said cutter, said idler sleeve located between spaced stop collars mounted about said drive shaft; (h) detent sleeve means slidably connecting said sheath about said catheter tube; and (i) means connected to said catheter tube for evacuating excised material from the blood vessel.
Claim 18
Dependent Claim
17 words
The apparatus of claim 15 wherein said sheath includes a fiber optics lumen extending the length thereof.
Claim 19
Dependent Claim
20 words
The apparatus of claim 15 wherein said sheath includes a sonic array mounted about the distal end of said sheath.
References Cited (Backward Citations)
US3448741A
Cited
US3844272A
Cited
US3882872A
Cited
US3815604A
Cited
US3884238A
Cited
US3805793A
Cited
US3937222A
Cited
US4011869A
Cited
US4111207A
Cited
US4167943A
Cited
US4167944A
Cited
US4203444A
Cited
US4203444B1
Cited
US4323071A
Cited
US4323071B1
Cited
US4210146A
Cited
US4513745A
Cited
US4273128A
Cited
US4411055A
Cited
US4669649A
Cited
US4603694A
Cited
US4589414A
Cited
US4616652A
Cited
US4577629A
Cited
US4631052A
Cited
US4589412A
Cited
US4598710A
Cited
US4685458A
Cited
US4842579B1
Cited
US4842579A
Cited
US4926858A
Cited
US4979951A
Cited
US4781186A
Cited
US4678459A
Cited
US4651753A
Cited
US4662869A
Cited
US4616648A
Cited
US4747406A
Cited
US4661094A
Cited
US4681106A
Cited
US4650466A
Cited
US4772258A
Cited
US4646738A
Cited
USRE33569E
Cited
US4771774A
Cited
US4794931A
Cited
US4728319A
Cited
US4696667A
Cited
US4729763A
Cited
US4765332A
Cited
US4747821A
Cited
US4749376A
Cited
US4834729A
Cited
US4883458A
Cited
US4784636A
Cited
US4857045A
Cited
US4850354A
Cited
US4819635A
Cited
US4844064A
Cited
US4857046A
Cited
US5047040A
Cited
US5053044A
Cited
US4895560A
Cited
US4919133A
Cited
US5087265A
Cited
US5370651A
Cited
US4994067A
Cited
US5269793A
Cited
AU6155190A
Cited
US5100426A
Cited
US5071424A
Cited
US5100425A
Cited
US5085662A
Cited
US5423838A
Cited
US5074841A
Cited
US5084010A
Cited
US5092873A
Cited
US5409454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-16 | 2001-09-15 | 2002-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-16 | 2005-09-15 | 2006-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-16 | 2009-09-15 | 2010-03-17 | $7700.00 | Window Closed / Lapsed |