Patent US8062258B2 successfully refreshed from Google Patents.
US8062258B2
Active / In Force
US
⏱️ 3.1 years remaining
Mechanical pump for removal of fragmented matter and methods of manufacture and use
Assignee: Covidien LP
•
Filing: 2009-12-15
•
Granted: 2011-11-22
•
Expires: 2029-12-15
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 21:01
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: 7
Claim 1
Independent Claim
101 words
A catheter comprising: an elongate catheter body having an internal lumen extending within the catheter body; an elongate tubular shaft extending within the catheter body lumen, the tubular shaft having an internal lumen extending within the tubular shaft, the shaft having an interior surface surrounding the shaft lumen; an impeller comprising a helical rotor element located on the interior surface of the shaft, such that rotation of the tubular shaft within the catheter body tends to transport material via the helical rotor element along and within the shaft lumen; and a macerator disposed at a distal end of the catheter body.
Claim 2
Dependent Claim
101 words
A catheter comprising: an elongate catheter body having an internal lumen extending within the catheter body; an elongate tubular shaft extending within the catheter body lumen, the tubular shaft having an internal lumen extending within the tubular shaft, the shaft having an interior surface surrounding the shaft lumen; an impeller comprising a helical rotor element located on the interior surface of the shaft, such that rotation of the tubular shaft within the catheter body tends to transport material via the helical rotor element along and within the shaft lumen; and a macerator disposed at a distal end of the catheter body.
Claim 3
Dependent Claim
34 words
The catheter of claim 1 , wherein the macerator is coupled to the elongate tubular shaft such that rotation of the elongate tubular shaft causes rotation of the macerator relative to the catheter body.
Claim 4
Dependent Claim
14 words
The catheter of claim 2 , further comprising an expansible cage surrounding the macerator.
Claim 5
Dependent Claim
25 words
The catheter of claim 3 , wherein the macerator is configured to engage at least a portion of an inner surface of the expansible cage.
Claim 6
Dependent Claim
54 words
The catheter of claim 1 , further comprising an additional helical rotor element located on an exterior surface of the tubular shaft such that rotation of the tubular shaft within the catheter body tends to transport material via the additional helical rotor element along and within the internal flow lumen of the catheter body.
Claim 7
Dependent Claim
25 words
The catheter of claim 1 , wherein the helical rotor element and the additional helical rotor element are oriented to flow material in different directions.
References Cited (Backward Citations)
US3320957A
Cited
US4621636A
Cited
US5597378A
Cited
US4665906A
Cited
US5002553A
Cited
US5024651A
Cited
US5306244A
Cited
US5334211A
Cited
US5443443A
Cited
US4819634A
Cited
US4842579A
Cited
US5653696A
Cited
US4842579B1
Cited
US4886490A
Cited
US4894051A
Cited
US5135531A
Cited
US4979939A
Cited
US4732154A
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
US5112292A
Cited
US4966604A
Cited
US5226909A
Cited
US5569277A
Cited
US5116352A
Cited
US5030201A
Cited
US5041093A
Cited
US5092844A
Cited
US5163910A
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
US5540707A
Cited
US5501694A
Cited
US5690641A
Cited
US5485042A
Cited
US5419774A
Cited
US5462529A
Cited
WO1995021576A1
Cited
US5507795A
Cited
US5643199A
Cited
WO1996001591A1
Cited
US5643229A
Cited
US5569284A
Cited
US5695507A
Cited
US5843031A
Cited
WO1996029941A1
Cited
US5876414A
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
US5947940A
Cited
US5947985A
Cited
US5954737A
Cited
WO1999044510A1
Cited
WO1999044542A2
Cited
US6001112A
Cited
US6090118A
Cited
US6036708A
Cited
WO2000041762A1
Cited
US6322572B1
Cited
US6702830B1
Cited
US7655016B2
Cited
US6454775B1
Cited
US6660014B2
Cited
US6945977B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2014-11-21 | 2015-05-23 | 2015-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2018-11-21 | 2019-05-23 | 2019-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2022-11-21 | 2023-05-23 | 2023-11-22 | $7700.00 | Window Closed / Lapsed |