US7655016B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical pump for removal of fragmented matter and methods of manufacture and use
Assignee: Covidien LP
•
Filing: 2004-03-09
•
Granted: 2010-02-02
•
Expires: 2024-03-09
Abstract
Abstract Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body and a clearing element for preventing buildup of materials at the opening of the catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. The clearing element may comprise a free end of a structure near the distal end of the catheter body for disrupting clot, wherein the free end of the structure extends into the distal opening of the catheter body to break up materials as the impeller is rotated. Alternatively, the clearing element may comprise a cutting member disposed at the distal opening of the catheter body.
Inventors
- 👤 Denise M. Demarais
- 👤 Stephen A. Leeflang
- 👤 Michael A. Evans
- 👤 Gwendolyn A. Watanabe
- 👤 John C. Tanner, III
- 👤 Christian S. Eversull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:13
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61M29/00; A61M29/02; A61B2017/00681; A61B2017/00685; A61B17/320758; A61B2017/320775
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A circulation catheter comprising: a catheter body having a proximal end, a distal end, and a lumen therebetween, the lumen forming a distal opening at the distal end of the catheter body; a macerator at the distal end of the catheter body, wherein the macerator is self-expandable; an expansible cage surrounding the macerator; an impeller rotatably disposed in the lumen of the catheter body to aspirate materials generated by the macerator from the distal end to the proximal end of the catheter body; and a clearing element disposed at the distal opening of the catheter body between the macerator and the impeller to prevent the materials from accumulating at the distal opening.
Claim 2
Dependent Claim
112 words
A circulation catheter comprising: a catheter body having a proximal end, a distal end, and a lumen therebetween, the lumen forming a distal opening at the distal end of the catheter body; a macerator at the distal end of the catheter body, wherein the macerator is self-expandable; an expansible cage surrounding the macerator; an impeller rotatably disposed in the lumen of the catheter body to aspirate materials generated by the macerator from the distal end to the proximal end of the catheter body; and a clearing element disposed at the distal opening of the catheter body between the macerator and the impeller to prevent the materials from accumulating at the distal opening.
Claim 3
Dependent Claim
22 words
A circulation catheter as in claim 1 wherein the macerator is configured to engage at least a portion of the expansible cage.
Claim 4
Dependent Claim
49 words
A circulation catheter as in claim 1 , the impeller comprising a helical rotor having a distal end and a proximal end extending at least partially over an outer surface of a shaft, wherein a distal portion of the shaft extends beyond the distal opening of the catheter body.
Claim 5
Dependent Claim
58 words
A circulation catheter as in claim 3 , wherein the macerator comprises a distal end and a proximal end, and wherein the distal end of the macerator is fixed to the distal end of the shaft, and wherein the proximal end of the macerator extends into the distal opening of the catheter body to form the clearing element.
Claim 6
Dependent Claim
34 words
A circulation catheter as in claim 3 , wherein the rotor comprises a helical coil, and wherein the distal end of the helical coil is unattached to the shaft to form the clearing element.
Claim 7
Dependent Claim
26 words
A circulation catheter as in claim 3 , wherein the clearing element comprises a cutting member coupled to the impeller at or near the distal opening.
Claim 8
Dependent Claim
17 words
A circulation catheter as in claim 6 , wherein the cutting member is attached to the macerator.
Claim 9
Dependent Claim
17 words
A circulation catheter as in claim 6 , wherein the cutting member is attached to the shaft.
Claim 10
Dependent Claim
18 words
A circulation catheter as in claim 6 , wherein the cutting member is attached to the helical rotor.
Claim 11
Dependent Claim
50 words
A circulation catheter as in any of claims 4 - 6 , wherein the shaft is rotated to induce aspiration through the catheter body lumen, and wherein the clearing element spins relative to the catheter body to clear the distal opening of the catheter body as the shaft is rotated.
Claim 12
Dependent Claim
21 words
A circulation catheter as in claim 1 , wherein the macerator expands and collapses in response to expansion of the cage.
References Cited (Backward Citations)
US3320957A
Cited
US4621636A
Cited
US5597378A
Cited
US4665906A
Cited
US4842579B1
Cited
US5653696A
Cited
US5306244A
Cited
US5334211A
Cited
US5024651A
Cited
US4819634A
Cited
US4842579A
Cited
US4732154A
Cited
US5443443A
Cited
US4886490A
Cited
US4894051A
Cited
US5135531A
Cited
US4979939A
Cited
US5002553A
Cited
US4926858A
Cited
US4646736A
Cited
US4681106A
Cited
US4737153A
Cited
US4771774A
Cited
US5041082A
Cited
US4762130A
Cited
US4883458A
Cited
US4923462A
Cited
US4857046A
Cited
US5047040A
Cited
US4895166A
Cited
US5423799A
Cited
US4957482A
Cited
US5007896A
Cited
US4966604A
Cited
US5569277A
Cited
US5226909A
Cited
US5116352A
Cited
US5030201A
Cited
US5041093A
Cited
US5163910A
Cited
US5092844A
Cited
US5180376A
Cited
US5616149A
Cited
US5078722A
Cited
US5330484A
Cited
US5100423A
Cited
US5569275A
Cited
US5192268A
Cited
US5129910A
Cited
US5630806A
Cited
US5766191A
Cited
US5632755A
Cited
US5571122A
Cited
US5501694A
Cited
US5540707A
Cited
US5485042A
Cited
US5690641A
Cited
US5419774A
Cited
US5462529A
Cited
WO1995021576A1
Cited
US5643199A
Cited
WO1996001591A1
Cited
US5643229A
Cited
US5569284A
Cited
US5695507A
Cited
US5843031A
Cited
US5876414A
Cited
WO1996029941A1
Cited
US5873882A
Cited
US5795322A
Cited
US5556408A
Cited
US5681335A
Cited
US5688234A
Cited
US5928186A
Cited
US6066158A
Cited
US5972019A
Cited
WO1998038929A1
Cited
US5899850A
Cited
US5911734A
Cited
US5904698A
Cited
US5947985A
Cited
US5954737A
Cited
WO1999044510A1
Cited
WO1999044542A2
Cited
US6001112A
Cited
US6090118A
Cited
US6036708A
Cited
WO2000041762A1
Cited
US6322572B1
Cited
US6702830B1
Cited
US6660014B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2013-02-01 | 2013-08-03 | 2014-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-02-01 | 2017-08-03 | 2018-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-02-01 | 2021-08-03 | 2022-02-02 | $7700.00 | Window Closed / Lapsed |