US5388590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter exchange device
Assignee: Medtronic Inc
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Filing: 1993-07-28
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Granted: 1995-02-14
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Expires: 2013-07-28
Abstract
Abstract The invention includes an exchange system, a guidewire anchoring means and a method of use for catheters exchangeable over a guidewire (55). The guidewire anchoring means restricts movement between the guidewire (55) and the anchoring means. The anchoring means comprises a shaft (35) with a longitudinal lumen (80) therethrough, the lumen (80) being in fluid communication with a balloon (25 or 30) disposed on the distal end of the shaft (35). A tubular split housing (5 or 10) surrounds the distal end of the shaft (35) and adheres to the balloon (25 or 30), the balloon (25 or 30) being sized to expand to a larger size than the inside diameter of the split housing (5 or 10). The inside diameter of the split housing (5 or 10) is sized to slidably receive a catheter, while the outside diameter of the split housing (5 or 10) is sized to slidably fit within a guide catheter (50 ).
Inventors
- 👤 John B. Horrigan
- 👤 Peter A. Lunn
- 👤 David S. Brin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0169
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
155 words
A catheter system comprising: (a) a guidewire; (b) a catheter having a lumen adapted to slidably receive the guidewire through the lumen; and (c) a guidewire anchoring means to restrict movement between the guidewire and the anchoring means, the anchoring means comprising: (i) a balloon; (ii) a shaft having a distal end and a proximal end; (iii) a longitudinal lumen throughout the shaft having the lumen being in fluid communication with the balloon, the balloon being disposed on the distal end of the shaft; (iv) a tubular split housing with a distal end and a proximal end, the housing having an inside diameter, the housing surrounding the distal end of the shaft, the balloon being adhered to the inside diameter of the housing, the balloon being sized to expand to a larger size than the inside diameter of the split housing, the inside diameter of the split housing being sized to slidably receive a catheter.
Claim 2
Dependent Claim
155 words
A catheter system comprising: (a) a guidewire; (b) a catheter having a lumen adapted to slidably receive the guidewire through the lumen; and (c) a guidewire anchoring means to restrict movement between the guidewire and the anchoring means, the anchoring means comprising: (i) a balloon; (ii) a shaft having a distal end and a proximal end; (iii) a longitudinal lumen throughout the shaft having the lumen being in fluid communication with the balloon, the balloon being disposed on the distal end of the shaft; (iv) a tubular split housing with a distal end and a proximal end, the housing having an inside diameter, the housing surrounding the distal end of the shaft, the balloon being adhered to the inside diameter of the housing, the balloon being sized to expand to a larger size than the inside diameter of the split housing, the inside diameter of the split housing being sized to slidably receive a catheter.
Claim 3
Dependent Claim
31 words
The catheter system of claim 1 wherein the housing is about 0.635 cm in length, with an outer diameter of about 0.165 cm and an inner diameter of about 0.14 cm.
Claim 4
Dependent Claim
15 words
The catheter system of claim 1 wherein the shaft is about 100 cm in length.
Claim 5
Dependent Claim
40 words
The catheter system of claim 1 wherein the balloon is disposed on the shaft and adhered to the housing using adhesive such as cyanoacrylate or epoxy and wherein the balloon is comprised of a biocompatible material including low density polyethylene.
Claim 6
Dependent Claim
38 words
The catheter system of claim 1 further comprising a split ring housing with a longitudinal slit in the housing, the slit being cut on an angle to the housing longitudinal axis and permitting the insertion of the catheter.
Claim 7
Dependent Claim
42 words
The catheter system of claim 5 wherein the slit has an angle with a range of approximately 35-55 degrees relative to the housing longitudinal axis and wherein the slit is at an angle of 45 degrees relative to the housing longitudinal axis.
Claim 8
Dependent Claim
42 words
The catheter system of claim 1 further comprising the housing having an opposed split, the split having, in order from the housing proximal end, a first segment, a second segment, and a third segment, the split permitting the insertion of a catheter.
Claim 9
Dependent Claim
53 words
The catheter system of claim 7 wherein the split of the first segment is made with a cut approximately 0.025 cm wide parallel to the longitudinal axis of the housing, the split of the first segment originating at the proximal end of the housing and running to approximately the midpoint of the housing.
Claim 10
Dependent Claim
42 words
The catheter system of claim 7 wherein the split of the second segment is made with a cut of approximately 0.127 cm wide running perpendicular to the housing longitudinal axis, from the midpoint to the opposite side of the opposed split housing.
Claim 11
Dependent Claim
49 words
The catheter system of claim 7 wherein the split of the third segment runs parallel to the housing longitudinal axis from the distal end of the second segment and continues to the distal end of the opposed split housing, the third segment having a width of approximately 0.025 cm.
Claim 12
Independent Claim
197 words
A method of exchanging catheters over a guidewire comprising the steps of: (a) providing a guidewire, a first catheter, a second catheter, and a guidewire anchoring means, the guidewire anchoring means having a shaft, a housing and a balloon, the shaft having a lumen therethrough, the lumen being in fluid communication with the balloon, the housing having a split therethrough, the housing having an inside diameter and the balloon being disposed upon the inside diameter of the housing; (b) advancing the guidewire to the desired location; (c) advancing a first catheter over the proximal end of the guidewire to the desired location; (d) pressing the proximal end of the first catheter through the split in the housing; (e) advancing the guidewire anchoring means over the first catheter past the distal end of the first catheter and over the guidewire; (f) inflating the balloon to a size that inhibits movement of the guidewire within the split housing; (g) withdrawing the first catheter from the body while leaving the guidewire anchoring means in place; (h) advancing the second catheter over the guidewire to the housing; (i) deflating the balloon; (j) withdrawing the guidewire anchoring means over the second catheter.
Claim 13
Independent Claim
197 words
A method of exchanging catheters over a guidewire comprising the steps of: (a) providing a guidewire, a first catheter, a second catheter, and a guidewire anchoring means, the guidewire anchoring means having a shaft, a housing and a balloon, the shaft having a lumen therethrough, the lumen being in fluid communication with the balloon, the housing having a split therethrough, the housing having an inside diameter and the balloon being disposed upon the inside diameter of the housing; (b) advancing the guidewire to the desired location; (c) advancing a first catheter over the proximal end of the guidewire to the desired location; (d) pressing the proximal end of the first catheter through the split in the housing; (e) advancing the guidewire anchoring means over the first catheter past the distal end of the first catheter and over the guidewire; (f) inflating the balloon to a size that inhibits movement of the guidewire within the split housing; (g) withdrawing the first catheter from the body while leaving the guidewire anchoring means in place; (h) advancing the second catheter over the guidewire to the housing; (i) deflating the balloon; (j) withdrawing the guidewire anchoring means over the second catheter.
Claim 14
Dependent Claim
118 words
A guidewire anchoring means comprising: (a) a balloon; (b) a shaft having a distal end and a proximal end; (c) the shaft having a longitudinal lumen therethrough, the lumen being in fluid communication with the balloon, the balloon being disposed on the distal end of the shaft; (d) a tubular split housing with a distal end and a proximal end, the housing having an inside diameter, the housing surrounding the distal end of the shaft the balloon being adhered to the inside diameter of the housing, the balloon being sized to expand to a larger size than the inside diameter of the split housing, the inside diameter of the split housing being sized to slidably receive a catheter.
Claim 15
Dependent Claim
118 words
A guidewire anchoring means comprising: (a) a balloon; (b) a shaft having a distal end and a proximal end; (c) the shaft having a longitudinal lumen therethrough, the lumen being in fluid communication with the balloon, the balloon being disposed on the distal end of the shaft; (d) a tubular split housing with a distal end and a proximal end, the housing having an inside diameter, the housing surrounding the distal end of the shaft the balloon being adhered to the inside diameter of the housing, the balloon being sized to expand to a larger size than the inside diameter of the split housing, the inside diameter of the split housing being sized to slidably receive a catheter.
Claim 16
Dependent Claim
32 words
The guidewire anchoring means of claim 12 wherein the housing is about 0.635 cm in length, with an outer diameter of about 0.165 cm and an inner diameter of about 0.14 cm.
Claim 17
Dependent Claim
16 words
The guidewire anchoring means of claim 12 wherein the shaft is preferably 100 cm in length.
Claim 18
Dependent Claim
41 words
The guidewire anchoring means of claim 12 wherein the balloon is disposed on the shaft and adhered to the housing using adhesive such as cyanoacrylate or epoxy and wherein the balloon is comprised of a biocompatible material including low density polyethylene.
Claim 19
Dependent Claim
39 words
The guidewire anchoring means of claim 12 further comprising a split ring housing with a longitudinal split in the housing, the split being cut on an angle to the housing longitudinal axis and permitting the insertion of the catheter.
Claim 20
Dependent Claim
43 words
The guidewire anchoring means of claim 16 wherein the slit has an angle with a range of approximately 35-55 degrees relative to the housing longitudinal axis and wherein the slit is at an angle of 45 degrees relative to the housing longitudinal axis.
Claim 21
Dependent Claim
43 words
The guidewire anchoring means of claim 12 further comprising the housing having an opposed split, the split having, in order from the housing proximal end, a first segment, a second segment, and a third segment, the split permitting the insertion of a catheter.
Claim 22
Dependent Claim
54 words
The guidewire anchoring means of claim 18 wherein the split of the first segment is made with a cut approximately 0.025 cm wide parallel to the longitudinal axis of the housing, the split of the first segment originating at the proximal end of the housing and running to approximately the midpoint of the housing.
Claim 23
Dependent Claim
41 words
The guidewire anchoring means of claim 18 wherein the split of the second segment is made with a cut of approximately 0.127 cm wide running perpendicular to the housing longitudinal axis, from the midpoint to the opposite side of the housing.
Claim 24
Dependent Claim
48 words
The guidewire anchoring means of claim 18 wherein the split of the third segment runs parallel to the housing longitudinal axis from the distal end of the second segment and continues to the distal end of the housing, the third segment having a width of approximately 0.025 cm.
References Cited (Backward Citations)
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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) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |