Patent US6171318B1 successfully refreshed from Google Patents.
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Patent US6702830B1 successfully refreshed from Google Patents.
US6702830B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical pump for removal of fragmented matter and methods of manufacture and use
Assignee: Covidien LP
•
Filing: 2000-06-09
•
Granted: 2004-03-09
•
Expires: 2020-06-09
Abstract
Abstract Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. Optionally, in the case of a tubular shaft, a second helical rotor may be provided within the shaft lumen in order to induce flow in opposite or in the same direction as induced by the outer helical rotor. Catheters may further comprise structures near their distal ends for disrupting clot, and are preferably introduceable over guidewires where the helical rotors are rotated directly over the guidewire. The catheters may include two or more impellers or impellers having two or more rotors in order to provide for circulation of materials at a target site within a patient body lumen.
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
2026-10-23 11:23
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M29/00; A61M29/02; A61B2017/00681; A61B2017/00685
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
56 words
An over-the-wire material transport catheter comprising: a catheter body having a proximal end, a distal end, and a lumen therebetween; and an impeller rotatably disposed in the lumen of the catheter body, said impeller including a tubular shaft having a central guidewire lumen and a helical rotor extending at least partially over an exterior surface thereof.
Claim 2
Dependent Claim
56 words
An over-the-wire material transport catheter comprising: a catheter body having a proximal end, a distal end, and a lumen therebetween; and an impeller rotatably disposed in the lumen of the catheter body, said impeller including a tubular shaft having a central guidewire lumen and a helical rotor extending at least partially over an exterior surface thereof.
Claim 3
Dependent Claim
15 words
A catheter as in claim 1 , wherein the material capture device comprises a macerator.
Claim 4
Dependent Claim
15 words
A catheter as in claim 2 , further comprising an expansible cage surrounding the macerator.
Claim 5
Dependent Claim
26 words
A catheter as in 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
66 words
A selective infusion-aspiration catheter comprising: a catheter body having a proximal end, a distal end, and a lumen therebetween; an impeller rotatably disposed in the lumen of the catheter body; and a driver coupleable to the impeller to selectively rotate said impeller in a first direction to induce aspiration through the catheter body lumen or in a second direction to induce infusion through the catheter body.
Claim 7
Dependent Claim
66 words
A selective infusion-aspiration catheter comprising: a catheter body having a proximal end, a distal end, and a lumen therebetween; an impeller rotatably disposed in the lumen of the catheter body; and a driver coupleable to the impeller to selectively rotate said impeller in a first direction to induce aspiration through the catheter body lumen or in a second direction to induce infusion through the catheter body.
Claim 8
Dependent Claim
22 words
A catheter as in claim 5 , further comprising a material capture device disposed at the distal end of the catheter body.
Claim 9
Dependent Claim
16 words
A catheter as in claim 6 , wherein the material capture device comprises a funnel structure.
Claim 10
Dependent Claim
15 words
A catheter as in claim 6 , wherein the material capture device comprises a macerator.
Claim 11
Dependent Claim
16 words
A catheter as in claim 8 , wherein further comprising an expansible cage surrounding the macerator.
Claim 12
Dependent Claim
26 words
A catheter as in claim 9 , wherein the macerator is configured to engage at least a portion of an inner surface of the expansible cage.
Claim 13
Dependent Claim
21 words
A catheter as in claim 5 , wherein the distal end of the catheter body is substantially free from surrounding structure.
Claim 14
Dependent Claim
73 words
A circulation catheter comprising: a catheter body having a proximal end, a distal end, and at least one lumen therebetween; a first impeller arranged in a lumen of the catheter body to aspirate materials from the distal end to the proximal end of the catheter body; and a second impeller arranged in a lumen of the catheter body to infuse materials from the proximal end to the distal end of the catheter body.
Claim 15
Dependent Claim
73 words
A circulation catheter comprising: a catheter body having a proximal end, a distal end, and at least one lumen therebetween; a first impeller arranged in a lumen of the catheter body to aspirate materials from the distal end to the proximal end of the catheter body; and a second impeller arranged in a lumen of the catheter body to infuse materials from the proximal end to the distal end of the catheter body.
Claim 16
Dependent Claim
35 words
A catheter as in claim 12 , wherein the first impeller is disposed in a first lumen of the catheter body and the second impeller is disposed in a second lumen of the catheter body.
Claim 17
Dependent Claim
30 words
A catheter as in claim 13 , wherein the first and second impellers each comprise a shaft having a helical rotor extending at least partially over an exterior surface thereof.
Claim 18
Dependent Claim
51 words
A catheter as in claim 12 , further comprising a tubular shaft, wherein the first impeller comprises a first helical rotor extending at least partially over an exterior of the shaft and the second impeller comprises a second helical rotor extending at least partially over an inner surface of the lumen.
Claim 19
Dependent Claim
22 words
A catheter as in claim 12 , further comprising a material capture device disposed at the distal end of the catheter body.
Claim 20
Dependent Claim
16 words
A catheter as in claim 16 , wherein the material capture device comprises a funnel structure.
Claim 21
Dependent Claim
15 words
A catheter as in claim 16 , wherein the material capture device comprises a macerator.
Claim 22
Dependent Claim
16 words
A catheter as in claim 18 , wherein further comprising an expansible cage surrounding the macerator.
Claim 23
Dependent Claim
26 words
A catheter as in claim 19 , wherein the macerator is configured to engage at least a portion of an inner surface of the expansible cage.
Claim 24
Dependent Claim
21 words
A catheter as in claim 16 , wherein the distal end of the catheter body is substantially free from surrounding structure.
Claim 25
Independent Claim
97 words
A method for transporting materials between a target site in a body lumen of a patient, and a location external to the patient, said method comprising: introducing a distal end of a catheter to the target site over a guidewire; and rotating a first impeller over a guidewire within a lumen of the catheter to transport material between the distal and a proximal end of the catheter including the step of selectively rotating the first impeller to transport material from the proximal end of the catheter through the catheter lumen to the distal end of the catheter.
Claim 26
Independent Claim
97 words
A method for transporting materials between a target site in a body lumen of a patient, and a location external to the patient, said method comprising: introducing a distal end of a catheter to the target site over a guidewire; and rotating a first impeller over a guidewire within a lumen of the catheter to transport material between the distal and a proximal end of the catheter including the step of selectively rotating the first impeller to transport material from the proximal end of the catheter through the catheter lumen to the distal end of the catheter.
Claim 27
Dependent Claim
27 words
A method as in claim 22 , wherein the impeller is selectively rotated to transport material from the distal end to the proximal end of the catheter.
Claim 28
Dependent Claim
27 words
A method as in claim 23 , further comprising applying a vacuum to the lumen of the catheter to assist in transporting material from the distal end.
Claim 29
Dependent Claim
37 words
A method as in claim 22 , further comprising delivering the material to be transported to the catheter lumen under pressure to assist in transporting material through the catheter lumen to the distal end of the catheter.
Claim 30
Dependent Claim
36 words
A method as in claim 22 , wherein the impeller is selectively rotated to infuse material to the body lumen at one time and selectively rotated to aspirate material from the body lumen at another time.
Claim 31
Dependent Claim
59 words
A method as in claim 22 , further comprising rotating a second impeller in the catheter body to selectively transport material from the proximal end of the catheter to the distal end of the catheter simultaneously with the transport of material to the proximal end from the distal end of the catheter, wherein a circulation of material is established.
Claim 32
Dependent Claim
42 words
A method as in claim 27 , wherein the first and second impellers are counterwound helical rotors mounted on a tubular member, with one rotor on the interior of the tubular member and one rotor on the exterior of the tubular member.
Claim 33
Dependent Claim
17 words
A kit comprising: a catheter; and instructions for use setting forth the method of claim 22 .
Claim 34
Dependent Claim
12 words
A kit as claim 29 , further comprising a motor drive unit.
Claim 35
Independent Claim
78 words
A method for selectively infusing and aspirating material between a target site in a body lumen of a patient, and a location external to the patient, said method comprising: introducing a distal end of a catheter to the target site; rotating an impeller within a lumen of the catheter in a first direction to aspirate material from the target site; and rotating the impeller within the lumen in a second direction to infuse material to the target site.
Claim 36
Independent Claim
78 words
A method for selectively infusing and aspirating material between a target site in a body lumen of a patient, and a location external to the patient, said method comprising: introducing a distal end of a catheter to the target site; rotating an impeller within a lumen of the catheter in a first direction to aspirate material from the target site; and rotating the impeller within the lumen in a second direction to infuse material to the target site.
Claim 37
Dependent Claim
17 words
A kit comprising: a catheter; and instructions for use setting forth the method of claim 31 .
Claim 38
Dependent Claim
13 words
A kit as in claim 32 , further comprising a motor drive unit.
Claim 39
Independent Claim
68 words
A method for infusing and aspirating material through a target site in a body lumen of a patient, said method comprising: introducing a distal end of a catheter to the target site; rotating a first impeller within a lumen of the catheter to transport material to the target site; and rotating a second impeller within a lumen of the catheter to transport material away from the target site.
Claim 40
Independent Claim
68 words
A method for infusing and aspirating material through a target site in a body lumen of a patient, said method comprising: introducing a distal end of a catheter to the target site; rotating a first impeller within a lumen of the catheter to transport material to the target site; and rotating a second impeller within a lumen of the catheter to transport material away from the target site.
Claim 41
Dependent Claim
21 words
A method as in claim 34 , wherein the first and second impellers are located in separate lumens within the catheter.
Claim 42
Dependent Claim
22 words
A method as in claim 34 , wherein the first and second impellers are located in the same lumen within the catheter.
Claim 43
Dependent Claim
81 words
A method as in claim 36 , wherein the first and second impellers comprise a flexible inner tube having a first helical rotor formed over an outer surface of the tube and a second helical rotor formed over an inner luminal surface of the tube, wherein the first and second helical rotors are counterwound so that rotation of the inner tube in one direction cause flow in one direction over the tube and flow in an opposite direction through the tube.
Claim 44
Dependent Claim
17 words
A kit comprising: a catheter, and instructions for use setting forth the method of claim 34 .
Claim 45
Dependent Claim
13 words
A kit as in claim 38 , further comprising a motor drive unit.
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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) | 2007-03-09 | 2007-09-08 | 2008-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-09 | 2011-09-08 | 2012-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-09 | 2015-09-08 | 2016-03-09 | $7700.00 | Window Closed / Lapsed |