US5328472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter with flexible side port entry
Assignee: Medtronic Inc
•
Filing: 1992-07-27
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Granted: 1994-07-12
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Expires: 2012-07-27
Abstract
Abstract An improved balloon catheter is disclosed which is comprised of two jacketed spring coils placed end-to-end and joined by a linking element which contains a lumen communicating between the inflation lumens formed by the two spring coils. A side port entry to a guidewire lumen, which extends through the distal coil to the distal end of the catheter, is located in the transition region formed by the linking element. The linking element may include two polyimide tubes or may be a multilumen insert. The catheter is stiffened by a core wire which is bonded directly to the spring coils. A catheter comprised of a single spring coil with a side port entry in the coil is also disclosed, and a method and apparatus for crimping the coil to create the entry.
Inventors
- 👤 Thomas A. Steinke
- 👤 Leonard F. Briggs
- 👤 Garry E. Rupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0043; A61M2025/0063; A61M25/01; A61M2025/0183; A61M25/0009; A61M25/0054; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49842; Y10T29/49844
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
82 words
A catheter comprising: a spring coil shaft and having an inflation lumen; a side port; a distal and proximal end; a balloon located generally at the distal end of the shaft, the balloon having a distal end and a proximal end; and a guidewire lumen extending from the spring coil shaft distal end to the side port, said guidewire lumen adapted to receive a guidewire in a sliding fit, wherein the distal end of the balloon is sealed to the inflation lumen.
Claim 2
Dependent Claim
82 words
A catheter comprising: a spring coil shaft and having an inflation lumen; a side port; a distal and proximal end; a balloon located generally at the distal end of the shaft, the balloon having a distal end and a proximal end; and a guidewire lumen extending from the spring coil shaft distal end to the side port, said guidewire lumen adapted to receive a guidewire in a sliding fit, wherein the distal end of the balloon is sealed to the inflation lumen.
Claim 3
Dependent Claim
14 words
A catheter according to claim 1 and wherein the shaft is jacketed with polyethylene.
Claim 4
Dependent Claim
52 words
A catheter according to claim 1 and wherein the spring coil shaft is formed of two spring coils placed end to end with a transition region therebetween, said transition region formed of a flexible tube, the side port entry located in the transition region, and each spring coil having an inflation lumen.
Claim 5
Dependent Claim
31 words
A catheter according to claim 3 and wherein the flexible tube located within the transition region defines an inflation lumen in fluid communication with the inflation lumens of the two coils.
Claim 6
Dependent Claim
17 words
A catheter according to claim 4 and wherein two flexible tubes are located within the transition region.
Claim 7
Dependent Claim
25 words
A catheter according to claim 3 and wherein a core wire extending through the inflation lumen of the shaft is affixed to the two coils.
Claim 8
Dependent Claim
40 words
A catheter according to claim 1 and further comprising a first flexible tube sealed into the spring coil shaft adjacent the side port and said first flexible tube in fluid communication with the inflation lumen in the spring coil shaft.
Claim 9
Dependent Claim
48 words
A catheter according to claim 7 and further comprising a second flexible tube sealed into the spring coil shaft parallel to the first tube and the tubes are formed of polyimide, said second flexible tube being in fluid communication with the inflation lumen in the spring coil shaft.
Claim 10
Dependent Claim
153 words
A catheter body comprising: a distal tubular member having a longitudinal distal inflation lumen throughout and a longitudinal inner guidewire lumen throughout; a proximal tubular member, the proximal tubular member being formed of a jacketed spring coil and having a longitudinal proximal inflation lumen throughout; and a transition region formed of a flexible tube and having at least one flexible transition inflation lumen allowing the distal inflation lumen and the proximal inflation lumen to be in fluid communication, the distal and proximal inflation lumens being placed end to end and the transition region being affixed to the proximal tubular member and to the distal tubular member; a side port entry in the transition region from which the guidewire lumen exits to the catheter exterior; and a seal surrounding the transition inflation lumen and filling the transition region to seal the side port from the distal inflation lumen and from the proximal inflation lumen.
Claim 11
Dependent Claim
153 words
A catheter body comprising: a distal tubular member having a longitudinal distal inflation lumen throughout and a longitudinal inner guidewire lumen throughout; a proximal tubular member, the proximal tubular member being formed of a jacketed spring coil and having a longitudinal proximal inflation lumen throughout; and a transition region formed of a flexible tube and having at least one flexible transition inflation lumen allowing the distal inflation lumen and the proximal inflation lumen to be in fluid communication, the distal and proximal inflation lumens being placed end to end and the transition region being affixed to the proximal tubular member and to the distal tubular member; a side port entry in the transition region from which the guidewire lumen exits to the catheter exterior; and a seal surrounding the transition inflation lumen and filling the transition region to seal the side port from the distal inflation lumen and from the proximal inflation lumen.
Claim 12
Dependent Claim
134 words
A catheter body comprising: a distal tubular member having a longitudinal distal inflation lumen throughout and a longitudinal inner guidewire lumen throughout; a proximal tubular member, the proximal tubular member being formed of a jacketed spring coil and having a longitudinal proximal inflation lumen throughout; and a transition region formed of a flexible tube and having at least one flexible transition inflation lumen allowing the distal inflation lumen and the proximal inflation lumen to be in fluid communication, the distal and proximal inflation lumens being placed end to end and the transition region being affixed to the proximal tubular member and to the distal tubular member; a side port entry in the transition region from which the guidewire lumen exits to the catheter exterior; and wherein the transition region includes a second flexible tube.
Claim 13
Dependent Claim
134 words
A catheter body comprising: a distal tubular member having a longitudinal distal inflation lumen throughout and a longitudinal inner guidewire lumen throughout; a proximal tubular member, the proximal tubular member being formed of a jacketed spring coil and having a longitudinal proximal inflation lumen throughout; and a transition region formed of a flexible tube and having at least one flexible transition inflation lumen allowing the distal inflation lumen and the proximal inflation lumen to be in fluid communication, the distal and proximal inflation lumens being placed end to end and the transition region being affixed to the proximal tubular member and to the distal tubular member; a side port entry in the transition region from which the guidewire lumen exits to the catheter exterior; and wherein the transition region includes a second flexible tube.
Claim 14
Dependent Claim
16 words
A catheter according to claim 10 and wherein the transition inflation lumen is formed of polyimide.
Claim 15
Dependent Claim
140 words
A catheter body comprising: a distal tubular member having a longitudinal distal inflation lumen throughout and a longitudinal inner guidewire lumen throughout; a proximal tubular member, the proximal tubular member being formed of a jacketed spring coil and having a longitudinal proximal inflation lumen throughout; and a transition region formed of a flexible tube and having at least one flexible transition inflation lumen allowing the distal inflation lumen and the proximal inflation lumen to be in fluid communication, the distal and proximal inflation lumens being placed end to end and the transition region being affixed to the proximal tubular member and to the distal tubular member; a side port entry in the transition region from which the guidewire lumen exits to the catheter exterior; and further comprising a core wire affixed to each of the distal and proximal tubular members.
Claim 16
Dependent Claim
140 words
A catheter body comprising: a distal tubular member having a longitudinal distal inflation lumen throughout and a longitudinal inner guidewire lumen throughout; a proximal tubular member, the proximal tubular member being formed of a jacketed spring coil and having a longitudinal proximal inflation lumen throughout; and a transition region formed of a flexible tube and having at least one flexible transition inflation lumen allowing the distal inflation lumen and the proximal inflation lumen to be in fluid communication, the distal and proximal inflation lumens being placed end to end and the transition region being affixed to the proximal tubular member and to the distal tubular member; a side port entry in the transition region from which the guidewire lumen exits to the catheter exterior; and further comprising a core wire affixed to each of the distal and proximal tubular members.
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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) | 1997-07-11 | 1998-01-10 | 1998-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-11 | 2002-01-10 | 2002-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-11 | 2006-01-10 | 2006-07-12 | $7700.00 | Window Closed / Lapsed |