Patent US1561264A successfully refreshed from Google Patents.
Patent US6669679B1 successfully refreshed from Google Patents.
US6669679B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-recoil catheter
Assignee: ACIST Medical Systems Inc
•
Filing: 2000-01-07
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Granted: 2003-12-30
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Expires: 2020-01-07
Abstract
Abstract A design is disclosed for a catheter assembly used during interventional and/or diagnostic procedures. The catheter includes a plurality of openings that allow for controlled fluid flow as the fluid exits the lumen of the catheter and can be inserted into the vascular system over a guidewire. As a result, the openings balance the fluid forces and, thereby, stabilize the distal tip to accommodate a wide range of injection parameters. The particular design of the catheter assembly of the present invention also reduces and/or eliminates recoil of the catheter tip during high volume injections, such as those associated with coronary or ventricular angiography.
Inventors
- 👤 Steven Savage
- 👤 Greg Brucker
- 👤 Douglas J. Duchon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:04
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A method for performing a medical procedure comprising: providing a catheter having a proximal end and a distal end having a size in the range of approximately 0 to 4 French, said distal end having an opening; introducing said catheter into a patient; introducing a fluid into the patient at a flow rate in the range of approximately 0 to 40 ml/sec without failure to said catheter; and balancing forces acting on said catheter resulting from the introduction of fluid flow by variably restricting the fluid flow through the opening at the distal end of said catheter according to said flow rate and by directing fluid in a retrograde direction out of a plurality of openings in a wall of said catheter.
Claim 2
Independent Claim
122 words
A method for performing a medical procedure comprising: providing a catheter having a proximal end and a distal end having a size in the range of approximately 0 to 4 French, said distal end having an opening; introducing said catheter into a patient; introducing a fluid into the patient at a flow rate in the range of approximately 0 to 40 ml/sec without failure to said catheter; and balancing forces acting on said catheter resulting from the introduction of fluid flow by variably restricting the fluid flow through the opening at the distal end of said catheter according to said flow rate and by directing fluid in a retrograde direction out of a plurality of openings in a wall of said catheter.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein the step of balancing forces results in said forces being balanced in both axial and radial directions.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein the step of balancing forces results in a substantially zero cumulative fluid force vector in all directions.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein the step of balancing forces prevents undesirable movement of the tip of said catheter.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein the step of balancing forces prevents dislodgment of said catheter from a blood vessel in said patient.
Claim 7
Dependent Claim
15 words
The method of claim 1 wherein the distal end of said catheter comprises elastic material.
Claim 8
Dependent Claim
25 words
The method of claim 6 wherein said elastic material allows the opening at the distal end to perform said variable restriction of said fluid flow.
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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) | 2006-12-29 | 2007-06-30 | 2007-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-12-29 | 2011-06-30 | 2011-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-12-29 | 2015-06-30 | 2015-12-30 | $7700.00 | Window Closed / Lapsed |