US6623495B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percutaneous material removal device tip
Assignee: Edwards Lifesciences Corp
•
Filing: 2001-01-18
•
Granted: 2003-09-23
•
Expires: 2021-01-18
Abstract
Abstract A catheter-based material removal device includes an elongated tube having a distal material removal tip thereon. The material removal tip includes a one- or two-piece housing affixed to the tube, and a rotating member therein. The rotating member includes a screw thread for coarsely chopping material received within the housing and an outwardly projecting flange for finely chopping the material. The housing includes at least one shearing member located axially adjacent the outwardly projecting flange. The shearing member has a relatively small circumferential size and a shearing edge that removes any material buildup on the axially-facing surface of the flange. Two shearing members may be provided, one each on both the proximal and distal sides of the flange. There may be three flanges restrained within a groove formed with the housing. The shearing members are located adjacent to the groove and may have the shape of teeth, with arcuate inner faces spanning an included angle through the center of the housing of about 25 degrees. The shearing member on the housing extends inward from a lumen wall and the shearing edge thereon has a radially oriented portion and a curvilinear portion blending into tangency with the lumen wall. In another embodiment, the rotatable member of the invention includes grinding means for grinding the material prior to the contact of the material with the shearing member. An article of manufacture, comprising packaging material and the device of the invention contained within the packaging material is also taught.
Inventors
- 👤 Thomas R. Findlay, III
- 👤 James R. Madonia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B2017/00681; A61B2017/00685; A61B2017/320004; A61B2017/320775; A61B2217/00; A61B2217/002; A61B2217/005
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
87 words
A material removal tip for a catheter-mounted device, comprising: a rotatable member having a body and at least one circumferentially spaced outwardly projecting shearing member having a shearing edge; and a generally tubular housing sized to receive said rotatable member, said housing including at least one stationary shearing member having a shearing edge, the stationary shearing member located axially adjacent said rotating shearing member for shearing material received in said housing between said adjacent rotating and stationary shearing members and reduce the clogging propensity of said material.
Claim 2
Dependent Claim
87 words
A material removal tip for a catheter-mounted device, comprising: a rotatable member having a body and at least one circumferentially spaced outwardly projecting shearing member having a shearing edge; and a generally tubular housing sized to receive said rotatable member, said housing including at least one stationary shearing member having a shearing edge, the stationary shearing member located axially adjacent said rotating shearing member for shearing material received in said housing between said adjacent rotating and stationary shearing members and reduce the clogging propensity of said material.
Claim 3
Dependent Claim
21 words
The device of claim 1 , wherein said stationary shearing member is located distally with respect to said rotating shearing member.
Claim 4
Dependent Claim
21 words
The device of claim 1 , wherein said stationary shearing member is located proximally with respect to said rotating shearing member.
Claim 5
Dependent Claim
22 words
The device of claim 3 , further including a second stationary shearing member located distally with respect to said rotating shearing member.
Claim 6
Dependent Claim
74 words
The device of claim 1 , wherein said housing includes proximal and distal sections, said distal section defining a first lumen for closely receiving said rotatable member, said proximal section defining a second lumen coaxial with said first lumen, and a larger annular groove formed between said first and second lumens for receiving said rotatable shearing members and axially restricting movement of said rotatable member, said stationary shearing member being located adjacent said groove.
Claim 7
Dependent Claim
28 words
The device of claim 5 , wherein said stationary shearing member is located distally with respect to said rotatable shearing members and projects inwardly from said first lumen.
Claim 8
Dependent Claim
28 words
The device of claim 5 , wherein said stationary shearing member is located proximally with respect to said rotatable shearing members and projects inwardly from said second lumen.
Claim 9
Dependent Claim
28 words
The device of claim 5 , further including a second shearing member located distally with respect to said rotatable shearing members and projecting inwardly from said first lumen.
Claim 10
Dependent Claim
42 words
The device of claim 5 , wherein said housing is formed in one piece, and said rotatable shearing members are cantilevered with respect to said body of said rotatable member to enable said rotatable shearing members to be snap-fit into said groove.
Claim 11
Dependent Claim
23 words
The device of claim 5 , wherein said proximal and distal sections of said housing are separate pieces with said groove defined therebetween.
Claim 12
Dependent Claim
20 words
The device of claim 10 , wherein said stationary shearing member is formed on said distal section of said housing.
Claim 13
Dependent Claim
20 words
The device of claim 10 , wherein said stationary shearing member is formed on said proximal section of said housing.
Claim 14
Dependent Claim
41 words
The device of claim 12 , further including a second stationary shearing member, wherein a first said stationary shearing member is formed on said proximal section and said second stationary shearing member is formed on said distal section of said housing.
Claim 15
Dependent Claim
24 words
The device of claim 1 , wherein said stationary shearing member has a shearing edge defined by a perpendicular corner on said shearing member.
Claim 16
Dependent Claim
40 words
The device of claim 14 , wherein said stationary shearing member extends radially from a lumenal wall of said housing, and said shearing edge has a radially oriented portion and a curvilinear portion transitioning into tangency with said lumenal wall.
Claim 17
Dependent Claim
43 words
The device of claim 1 , wherein said stationary shearing member extends radially inward into close proximity with said body of said rotatable member to define a gap, wherein said gap is more than zero and less than about 0.254 mm (0.01 inches).
Claim 18
Dependent Claim
43 words
The device of claim 1 , wherein said stationary shearing member extends radially inward into close proximity with said body of said rotatable member to define a gap, wherein said gap is more than zero and less than about 0.0254 mm (0.001 inches).
Claim 19
Dependent Claim
43 words
The device of claim 1 , wherein said stationary shearing member extends radially inward into close proximity with said body of said rotatable member to define a gap, wherein said gap is more than zero and less than about 0.0127 mm (0.0005 inches).
Claim 20
Dependent Claim
48 words
The device of claim 1 having at least about a plurality of said stationary and said rotatable shearing members, wherein said stationary shearing members extend radially inward into close proximity with said bodies of said rotatable members to define shearing planes for simultaneous coarse, medium and fine cutting.
Claim 21
Dependent Claim
18 words
The device of claim 1 having a total preselected diameter effective for use in a preselected body lumen.
Claim 22
Dependent Claim
14 words
The device of claim 20 wherein said preselected body lumen is a blood vessel.
Claim 23
Dependent Claim
18 words
The device of claim 20 wherein said preselected body lumen is a lumen for the passage of bile.
Claim 24
Dependent Claim
18 words
The device of claim 20 wherein said preselected body lumen is a lumen for the passage of urine.
Claim 25
Dependent Claim
14 words
The device of claim 20 wherein said preselected body lumen is a gastrointestinal lumen.
Claim 26
Dependent Claim
14 words
The device of claim 20 wherein said preselected body lumen is a lymph vessel.
Claim 27
Dependent Claim
27 words
The device of claim 1 , further comprising a lumen, wherein said lumen is adapted to transport a medically useful agent for release at a predetermined time.
Claim 28
Dependent Claim
14 words
The device of claim 26 , wherein said release is accomplished using pumping means.
Claim 29
Dependent Claim
24 words
The device of claim 27 , wherein said pumping means is selected from the group consisting of gas pressure, mechanical pressure, and liquid pressure.
Claim 30
Dependent Claim
16 words
The device of claim 26 , wherein said medically useful agent is an x-ray contrast agent.
Claim 31
Dependent Claim
15 words
The device of claim 26 , wherein said medically useful agent is a thrombolytic agent.
Claim 32
Dependent Claim
16 words
The device of claim 26 , wherein said medically useful agent is a viral vector agent.
Claim 33
Dependent Claim
14 words
The device of claim 26 , wherein said medically useful agent is an enzyme.
Claim 34
Dependent Claim
80 words
The device of claim 1 , wherein said rotatable member includes grinding means for grinding said material prior to said contact of said material with said shearing member, wherein said grinding means include at least one abrasive surface fabricated from at least one abrasive material selected from the group consisting of ceramics, diamond, quartz, silicon carbide, aluminum oxide, boron carbide, boron nitride, tungsten carbide, titanium nitride, titanium surfaces with a file-like surface, and stainless steel surfaces with a file-like surface.
Claim 35
Dependent Claim
33 words
The device of claim 33 , wherein said rotatable member includes a grinder rotor having at least a first said abrasive surface, and said housing includes at least a second said abrasive surface.
Claim 36
Dependent Claim
19 words
The device of claim 33 , wherein said at least one abrasive surface includes at least one cutting flute.
Claim 37
Dependent Claim
48 words
The device of claim 1 , wherein portions of said outwardly projecting shearing member and said stationary shearing member are coated with at least one material selected from the group consisting of ceramics, diamond, quartz, silicon carbide, aluminum oxide, boron carbide, boron nitride, tungsten carbide and titanium nitride.
Claim 38
Dependent Claim
46 words
The device of claim 1 , wherein said outwardly projecting shearing member and said stationary shearing member are fabricated from at least one material selected from the group consisting of ceramics, diamond, quartz, silicon carbide, aluminum oxide, boron carbide, boron nitride, tungsten carbide and titanium nitride.
Claim 39
Dependent Claim
35 words
The device of claim 1 , wherein said rotatable member and said generally tubular housing are constructed substantially of at least one material selected from the group consisting of stainless steel, titanium, and acrylic plastic.
Claim 40
Dependent Claim
15 words
The device of claim 1 , wherein said generally tubular housing is a one-piece housing.
Claim 41
Dependent Claim
27 words
The device of claim 1 , wherein said generally tubular housing is fabricated from at least two pieces, wherein said pieces are joined by means for joining.
Claim 42
Dependent Claim
26 words
The device of claim 40 , wherein said means for joining are selected from the group consisting of welds, adhesives, press-fitting and mechanical means for interlocking.
Claim 43
Dependent Claim
51 words
An article of manufacture, comprising packaging material and the device of claim 1 contained within said packaging material, wherein said device is effective for use in a preselected body lumen; and said packaging material includes a label that indicates that said device is effective for use in said preselected body lumen.
Claim 44
Dependent Claim
34 words
The article of manufacture of claim 42 , further comprising at least one item selected from the group consisting of guidewires, introducers, containers, catheters, angioplasty balloons, stents, medicinal agents, medical syringes, and instructional material.
Claim 45
Dependent Claim
33 words
The article of manufacture of claim 43 , wherein said instructional material is at least one device selected from the group consisting of printed materials, CD disks, magnetic data storage disks, and videotapes.
Claim 46
Dependent Claim
98 words
A material removal tip for a catheter-mounted device, comprising: a rotatable member having a body and at least one circumferentially spaced outwardly projecting shearing member; a generally tubular housing sized to receive the rotatable member, said housing including at least one stationary shearing member located axially adjacent said rotatable shearing member for shearing material received in said housing between said adjacent rotating and stationary shearing members and reduce the clogging propensity of said material; and wherein the rotatable member further includes grinding means for grinding said material prior to said contact of said material with said shearing member.
Claim 47
Dependent Claim
98 words
A material removal tip for a catheter-mounted device, comprising: a rotatable member having a body and at least one circumferentially spaced outwardly projecting shearing member; a generally tubular housing sized to receive the rotatable member, said housing including at least one stationary shearing member located axially adjacent said rotatable shearing member for shearing material received in said housing between said adjacent rotating and stationary shearing members and reduce the clogging propensity of said material; and wherein the rotatable member further includes grinding means for grinding said material prior to said contact of said material with said shearing member.
Claim 48
Dependent Claim
102 words
A material removal tip for a catheter-mounted device, comprising: a rotatable member having a body and at least one circumferentially spaced outwardly projecting shearing member; a generally tubular housing having an internal lumen defining an internal abrasive surface, the housing being sized to receive the rotatable member, said housing including at least one stationary shearing member located axially adjacent said rotatable shearing member for shearing material received in said housing between said adjacent rotating and stationary shearing members and reduce the clogging propensity of said material; and a grinder rotor having a second abrasive surface located substantially within the tubular housing lumen.
Claim 49
Dependent Claim
102 words
A material removal tip for a catheter-mounted device, comprising: a rotatable member having a body and at least one circumferentially spaced outwardly projecting shearing member; a generally tubular housing having an internal lumen defining an internal abrasive surface, the housing being sized to receive the rotatable member, said housing including at least one stationary shearing member located axially adjacent said rotatable shearing member for shearing material received in said housing between said adjacent rotating and stationary shearing members and reduce the clogging propensity of said material; and a grinder rotor having a second abrasive surface located substantially within the tubular housing lumen.
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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) | 2006-09-22 | 2007-03-24 | 2007-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-09-22 | 2011-03-24 | 2011-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-09-22 | 2015-03-24 | 2015-09-23 | $7700.00 | Window Closed / Lapsed |