US5630823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fragmentation of a lung or heart embolus
Assignee: Cook Medical Technologies LLC
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Filing: 1995-06-02
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Granted: 1997-05-20
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Expires: 2015-06-02
Abstract
Abstract Method and apparatus for fragmentation of a lung embolus. The apparatus includes a catheter that is introduced over a guide wire to the site of the lung embolism in the vascular system of a patient. When the guide wire is withdrawn from the distal end segment of the catheter, the distal end segment bends back proximally. An opening in the bend of the catheter is in line with the central axis of the catheter when the distal end segment is in a curved configuration. The guide wire is then advanced to extend distally from the catheter opening past the embolism and stabilize the longitudinal position of the catheter in the blood vessel. The apparatus also includes a thread for pulling the bent distal end segment into a generally oval-shaped loop condition and stabilizing the loop about the embolism. The looped catheter is then rotated and moved longitudinally back and forth for mechanically destroying the embolism. To return the catheter to a straight condition, the rigid guide wire is withdrawn from the catheter, and a guide wire with a resilient J-tip is advanced to the distal end segment of the catheter. The J-tip guide wire follows the catheter past the catheter opening, thereby straightening the catheter for removal from the body. The apparatus optionally includes a handle or motor positioned at the proximal end of the apparatus.
Inventors
- 👤 Thomas Schmitz-Rode
- 👤 Rolf W. Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0041; A61B; A61B17/00; A61B17/22; A61B17/221; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61B17/320758; A61B2017/320733
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
An apparatus for fragmentation of a lung or heart embolus, comprising: a torsionally stable catheter (1) having a distal end and a proximal end and a guide wire (2) located within the lumen of the catheter, wherein the distal end of the catheter (1) has a preformed bend (6), said catheter having sufficient rigidity to retain said preformed bend, which is controllable with guide wire (2) wherein an opening is located in the distal end of the catheter (1) in the side of the catheter away from said bend and which is in line with a longitudinal central axis of the catheter (1) in order that the rotation of the catheter will result in the fragmentation of an embolus.
Claim 2
Independent Claim
119 words
An apparatus for fragmentation of a lung or heart embolus, comprising: a torsionally stable catheter (1) having a distal end and a proximal end and a guide wire (2) located within the lumen of the catheter, wherein the distal end of the catheter (1) has a preformed bend (6), said catheter having sufficient rigidity to retain said preformed bend, which is controllable with guide wire (2) wherein an opening is located in the distal end of the catheter (1) in the side of the catheter away from said bend and which is in line with a longitudinal central axis of the catheter (1) in order that the rotation of the catheter will result in the fragmentation of an embolus.
Claim 3
Dependent Claim
32 words
An apparatus according to claim 1 wherein a free end of the bend (6) points towards the central axis of the catheter (1) and that the bend forms an oval loop (6).
Claim 4
Dependent Claim
42 words
An apparatus according to claim 2 wherein a small diameter (d) of the loop (6) is approximately 7 to 10 mm and a big diameter (D) of the loop (6) is two or three times as big as the small diameter (d).
Claim 5
Dependent Claim
36 words
An apparatus according to claim 1 wherein openings (5) are arranged in the distal end segment of the catheter (1), the diameter of said openings being smaller than the cross section of the guide wire (2).
Claim 6
Dependent Claim
36 words
An apparatus according to claim 2 wherein openings (5) are arranged in the distal end segment of the catheter (1), the diameter of said openings being smaller than the cross section of the guide wire (2).
Claim 7
Dependent Claim
36 words
An apparatus according to claim 3 wherein openings (5) are arranged in the distal end segment of the catheter (1), the diameter of said openings being smaller than the cross section of the guide wire (2).
Claim 8
Dependent Claim
63 words
An apparatus according to claim 1 wherein a thread (7), one end of which protrudes from the proximal end of the catheter, is passed through the catheter (1), leaves at the distal end of the catheter (1), is introduced again in the catheter (1) through an opening (8) and protrudes likewise with its other end from the proximal end of the catheter (1).
Claim 9
Dependent Claim
63 words
An apparatus according to claim 2 wherein a thread (7), one end of which protrudes from the proximal end of the catheter, is passed through the catheter (1), leaves at the distal end of the catheter (1), is introduced again in the catheter (1) through an opening (8) and protrudes likewise with its other end from the proximal end of the catheter (1).
Claim 10
Dependent Claim
63 words
An apparatus according to claim 3 wherein a thread (7), one end of which protrudes from the proximal end of the catheter, is passed through the catheter (1), leaves at the distal end of the catheter (1), is introduced again in the catheter (1) through an opening (8) and protrudes likewise with its other end from the proximal end of the catheter (1).
Claim 11
Dependent Claim
63 words
An apparatus according to claim 4 wherein a thread (7), one end of which protrudes from the proximal end of the catheter, is passed through the catheter (1), leaves at the distal end of the catheter (1), is introduced again in the catheter (1) through an opening (8) and protrudes likewise with its other end from the proximal end of the catheter (1).
Claim 12
Dependent Claim
63 words
An apparatus according to claim 5 wherein a thread (7), one end of which protrudes from the proximal end of the catheter, is passed through the catheter (1), leaves at the distal end of the catheter (1), is introduced again in the catheter (1) through an opening (8) and protrudes likewise with its other end from the proximal end of the catheter (1).
Claim 13
Dependent Claim
63 words
An apparatus according to claim 6 wherein a thread (7), one end of which protrudes from the proximal end of the catheter, is passed through the catheter (1), leaves at the distal end of the catheter (1), is introduced again in the catheter (1) through an opening (8) and protrudes likewise with its other end from the proximal end of the catheter (1).
Claim 14
Dependent Claim
18 words
The apparatus of claim 1 further comprising a handle (9) positioned at a proximal end of the catheter.
Claim 15
Dependent Claim
18 words
The apparatus of claim 1 further comprising a motor (10) positioned at a proximal end of the catheter.
References Cited (Backward Citations)
US1207479A
Cited
US4405314A
Cited
US4740195A
Cited
US4747840A
Cited
US5037403A
Cited
US5330484A
Cited
US5312357A
Cited
EP0549458A1
Cited
US5352198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-19 | 2000-11-18 | 2001-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-19 | 2004-11-18 | 2005-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-19 | 2008-11-18 | 2009-05-20 | $7700.00 | Window Closed / Lapsed |