US6036717A
Expired / Lapsed
US
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Embolectomy catheter
Assignee: Louisville Laboratories Inc
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Filing: 1998-06-23
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Granted: 2000-03-14
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Expires: 2018-06-23
Abstract
Abstract The present invention comprises an embolectomy catheter for the removal of an embolus within a vessel of a patient, including a catheter shaft having a distal end with a diametrically adjustable hinged compartment thereat. The catheter shaft has a proximal end with a handle attached thereon. A longitudinally displaceable cannula is connected to the distal end of the catheter shaft and to a slidable tab in the handle, to permit controlled adjustment of the diametric size of the hinged compartment arranged adjacent the distal end of the catheter when the slidable tab is moved relative to the handle, to allow a physician to open the compartment to any desired size relative to a patient's vessel. The compartment may then be pulled through the vessel via a pull on the handle, to collect any embolus therewithin.
Inventors
- 👤 William C. Mers Kelly
- 👤 David Y. Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61M; A61M25/00; A61M25/10; A61B17/22; A61B17/22031; A61B17/22032; A61B2017/22082; A61B90/00; A61B90/06; A61B2090/064; A61B90/39; A61M25/1002; A61M2025/1004; A61M2025/1043; A61M2025/109
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
86 words
An embolectomy catheter for the removal of an emboli within a vessel of a patient, comprising: a catheter shaft having a distal end with a diametrically adjustable hinged compartment thereat, said catheter shaft also having a proximal end; a handle attached to said proximal end of said shaft, and, a means for adjusting the diametric size of said hinged compartment arranged between said distal end of said catheter, and said handle, to enable said compartment to sweep any diameter body vessel as it is pulled therewithin.
Claim 2
Dependent Claim
86 words
An embolectomy catheter for the removal of an emboli within a vessel of a patient, comprising: a catheter shaft having a distal end with a diametrically adjustable hinged compartment thereat, said catheter shaft also having a proximal end; a handle attached to said proximal end of said shaft, and, a means for adjusting the diametric size of said hinged compartment arranged between said distal end of said catheter, and said handle, to enable said compartment to sweep any diameter body vessel as it is pulled therewithin.
Claim 3
Dependent Claim
42 words
The embolectomy catheter as recited in claim 1, wherein said handle also has a force sensing gauge thereon, to permit the amount of pull force being applied to said hinged compartment to be noted when pull tension is applied to said handle.
Claim 4
Dependent Claim
79 words
The embolectomy catheter as recited in claim 2, wherein said force sensing gauge includes a housing having indicators marked thereon, and a barrel member which is movably arranged about said housing wherein movement of said barrel member with respect to said housing permits indicators to be displayed indicating the amount of force pulling longitudinally on said handle, and hence the amount of force pulling longitudinally on said catheter shaft and said hinged compartment in a vessel being swept clear.
Claim 5
Dependent Claim
25 words
The embolectomy catheter as recited in claim 3, wherein a spring is arranged between said housing and said barrel member to provide a bias therebetween.
Claim 6
Dependent Claim
75 words
The embolectomy catheter as recited in claim 1, wherein said means for adjusting the diametric size of said hinged compartment includes an inner shaft, said inner shaft having a distal end which is attached to the distalmost end of said catheter shaft, said inner shaft having a proximal end which is attached to said handle to permit tension to be applied to said inner shaft, and hence effect a diametric change in said hinged compartment.
Claim 7
Dependent Claim
51 words
The embolectomy catheter as recited in claim 5, wherein said inner shaft is hollow, and said distal tip of said catheter shaft has a distal orifice thereat, said hollow inner shaft and said distal orifice being in communication with one another to permit a guide wire or medicaments to flow therethrough.
Claim 8
Dependent Claim
53 words
The embolectomy catheter as recited in claim 5, wherein an annular passageway is disposed between said inner shaft and said catheter shaft, to permit medicaments to be transmitted from a valve in said handle, to a discharge orifice in or adjacent to said hinged compartment in said distal end of said catheter shaft.
Claim 9
Dependent Claim
28 words
The embolectomy catheter as recited in claim 5, wherein said proximal end of said catheter shaft is attached to a longitudinally movable support member arranged in said handle.
Claim 10
Dependent Claim
47 words
The embolectomy catheter as recited in claim 8, wherein said support member has serrations on one side thereof to permit said support member to be locked into a longitudinally fixed position with respect to said handle, thus locking into a fixed position the diametrically adjustable hinged compartment.
Claim 11
Dependent Claim
34 words
The embolectomy catheter as recited in claim 9, wherein said support member has a bias member on one longitudinal side thereof, to permit said serrations on said support member to fixedly engage said handle.
Claim 12
Dependent Claim
32 words
The embolectomy catheter as recited in claim 1, wherein said catheter has a radiopaque marker band arranged distally of said hinged compartment to permit fluoroscopic locating and positioning of said hinged compartment.
Claim 13
Dependent Claim
35 words
The embolectomy catheter as recited in claim 1, wherein said catheter has a radiopaque marker band arranged proximally adjacent said hinged compartment to permit fluoroscopic locating and positioning of the distal tip of said catheter.
Claim 14
Dependent Claim
37 words
The embolectomy catheter as recited in claim 1, wherein said catheter has a radiopaque marker band arranged both proximally and distally of said hinged compartment to permit fluoroscopic confirmation of the diametric adjustment of said hinged compartment.
Claim 15
Independent Claim
143 words
A method for performing an embolectomy procedure so as to remove an embolus from the vessel of a patient, comprising the steps of: threading the distal end of an embolectomy catheter directly into the vessel of the patient or onto said guide wire which has been placed in the vessel of the patient, beyond the site of the embolus, said embolectomy catheter having a hinged compartment on its distal end, said embolectomy catheter having a proximal end with an adjustment means in a handle therein; positioning said adjustment means in said handle, so as to adjust the diameter of said hinged compartment to be compatible with the diameter of the vessel being treated; and withdrawing said catheter from the vessel by pulling longitudinally on said handle, to effect capture and removal of said embolus from the vessel by said diametrically expanded hinged compartment.
Claim 16
Independent Claim
143 words
A method for performing an embolectomy procedure so as to remove an embolus from the vessel of a patient, comprising the steps of: threading the distal end of an embolectomy catheter directly into the vessel of the patient or onto said guide wire which has been placed in the vessel of the patient, beyond the site of the embolus, said embolectomy catheter having a hinged compartment on its distal end, said embolectomy catheter having a proximal end with an adjustment means in a handle therein; positioning said adjustment means in said handle, so as to adjust the diameter of said hinged compartment to be compatible with the diameter of the vessel being treated; and withdrawing said catheter from the vessel by pulling longitudinally on said handle, to effect capture and removal of said embolus from the vessel by said diametrically expanded hinged compartment.
Claim 17
Dependent Claim
48 words
The method for performing an embolectomy procedure as recited in claim 14, including the step of: injecting a medicament in a luer fitting in said handle so as to be transmitted through an annular channel in said catheter and out a distal orifice thereof and into said vessel.
Claim 18
Dependent Claim
70 words
The method for performing an embolectomy procedure as recited in claim 15, incliding the steps of: arranging a barrel to be disposed radially about the proximal end of said handle; securing a spring between said adjustment means and said barrel, so as to be able to meter and control the tension being applied to said hingedly adjustable compartment, when said handle is pulled proximately by pulling proximately on said barrel.
Claim 19
Dependent Claim
47 words
The method for performing an embolectomy procedure as recited in claim 16, including the step of: applying a series of indicators on said handle so as to permit said tension to be viewed as a displacement of said barrel and said adjustment means relative to said indicators.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-14 | 2003-09-13 | 2004-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-14 | 2007-09-13 | 2008-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-14 | 2011-09-13 | 2012-03-14 | $7700.00 | Window Closed / Lapsed |