US5509910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of soft tip attachment for thin walled catheters
Assignee: Medtronic Inc
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Filing: 1994-05-02
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Granted: 1996-04-23
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Expires: 2014-05-02
Abstract
Abstract A catheter comprising a soft tip segment (5), a transition segment (11), and a shaft segment (3). The soft tip segment (5) has at least two ungular sections (6, 7) removed from the proximal end. The distal end of the transition segment (11) is bonded to the proximal end of the soft tip (5) segment. The transition segment (11) is comprised of materials having substantially higher tensile strength than the soft tip (5) segment. The distal end of the shaft (3) is bonded to the proximal end of the transition segment (11). The distal end of the shaft (3) has at least two ungular sections (2, 4) removed.
Inventors
- 👤 Peter A. Lunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:21
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/001; A61M25/0043; A61M25/0054; A61M25/0067; A61M25/0068; A61M25/0069; A61M25/008; A61M2025/0081
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
163 words
A catheter comprising: (a) an elongated soft tip segment having a proximal end and a distal end, the soft tip segment defining at least one lumen; (b) an elongated transition segment having a proximal end and a distal end, the transition segment defining at least one lumen, the distal end of the transition segment having at least one ungular section, the proximal end of the transition segment having at least one ungular section; (c) an elongated catheter shaft defining at least one lumen, the catheter shaft having a proximal end, a distal end, and a distal end portion, the distal end portion being shaped to mate with the proximal end of the transition segment, the distal end potion being bonded to the proximal end of the transition segment; and (d) the proximal end of the soft tip segment being shaped to mate with the distal end of the transition segment, the proximal end being bonded to the distal end of the transition segment.
Claim 2
Dependent Claim
163 words
A catheter comprising: (a) an elongated soft tip segment having a proximal end and a distal end, the soft tip segment defining at least one lumen; (b) an elongated transition segment having a proximal end and a distal end, the transition segment defining at least one lumen, the distal end of the transition segment having at least one ungular section, the proximal end of the transition segment having at least one ungular section; (c) an elongated catheter shaft defining at least one lumen, the catheter shaft having a proximal end, a distal end, and a distal end portion, the distal end portion being shaped to mate with the proximal end of the transition segment, the distal end potion being bonded to the proximal end of the transition segment; and (d) the proximal end of the soft tip segment being shaped to mate with the distal end of the transition segment, the proximal end being bonded to the distal end of the transition segment.
Claim 3
Dependent Claim
21 words
A catheter according to claim 1 wherein the distal end portion of the catheter shaft is approximately 2.0 mm in length.
Claim 4
Dependent Claim
17 words
A catheter according to claim 1 wherein the elongated transition segment is approximately 0.5 mm in length.
Claim 5
Dependent Claim
20 words
A catheter according to claim 1 wherein the elongated transition segment is composed of a 55D Shore durometer polyether-polyamide material.
Claim 6
Dependent Claim
17 words
A catheter according to claim 1 wherein the elongated tip segment is approximately 2.0 mm in length.
Claim 7
Dependent Claim
26 words
A catheter according to claim 1 wherein the elongated soft tip segment is composed of a blend of Shore 35D and Shore 55D durometer polyether-polyamide material.
Claim 8
Dependent Claim
23 words
A catheter according to claim 1 wherein the elongated catheter shaft is at least partially composed of a 70D Shore durometer polyether-polyamide material.
Claim 9
Dependent Claim
18 words
A catheter according to claim 1 wherein the distal end of the transition segment has two ungular sections.
Claim 10
Dependent Claim
19 words
A catheter according to claim 8 wherein the two ungular sections have an angle of approximately 60 degrees therebetween.
Claim 11
Dependent Claim
18 words
A catheter according to claim 1 wherein the proximal end of the transition segment has two ungular sections.
Claim 12
Dependent Claim
19 words
A catheter according to claim 10 wherein the two ungular sections have an angle of approximately 60 degrees therebetween.
Claim 13
Dependent Claim
173 words
A catheter comprising: (a) a transition segment having a proximal end, a distal end, a central longitudinal axis, and defining at least one lumen, the proximal end having two ungular sections, the distal end having two ungular sections, one of each of the ungular sections being oriented at 30 degrees relative to the central longitudinal axis, the ungular sections of the proximal end having an angle of 60 degrees therebetween, the ungular sections of the distal end having an angle of 60 degrees therebetween; (b) a catheter shaft having a distal end portion and defining at least one lumen, the distal end portion being shaped to mate with the proximal end of the transition segment, the distal end portion being bonded to the proximal end of the transition segment; and (c) a soft tip segment having a proximal end and defining at least one lumen, the proximal end being shaped to mate with the distal end of the transition segment, the proximal end being bonded to the distal end of the transition segment.
Claim 14
Dependent Claim
173 words
A catheter comprising: (a) a transition segment having a proximal end, a distal end, a central longitudinal axis, and defining at least one lumen, the proximal end having two ungular sections, the distal end having two ungular sections, one of each of the ungular sections being oriented at 30 degrees relative to the central longitudinal axis, the ungular sections of the proximal end having an angle of 60 degrees therebetween, the ungular sections of the distal end having an angle of 60 degrees therebetween; (b) a catheter shaft having a distal end portion and defining at least one lumen, the distal end portion being shaped to mate with the proximal end of the transition segment, the distal end portion being bonded to the proximal end of the transition segment; and (c) a soft tip segment having a proximal end and defining at least one lumen, the proximal end being shaped to mate with the distal end of the transition segment, the proximal end being bonded to the distal end of the transition segment.
Claim 15
Dependent Claim
19 words
The catheter according to claim 12 wherein the transition segment is comprised of a Shore 55D durometer polyether-polyamide material.
Claim 16
Dependent Claim
25 words
The catheter according to claim 12 wherein the soft tip segment is comprised of a blend of Shore 35D and Shore 55D durometer polyether-polyamide material.
Claim 17
Dependent Claim
22 words
The catheter according to claim 12 wherein the catheter shaft is at least partially comprised of a Shore 70D durometer polyether-polyamide material.
Claim 18
Dependent Claim
102 words
A catheter comprising: (a) a transition segment having a proximal end, a central longitudinal axis, and defining at least one lumen, the proximal end having two ungular sections, one of each of the ungular sections being oriented at 30 degrees relative to the central longitudinal axis, the ungular sections having an angle of 60 degrees therebetween; and (b) a catheter shaft having a distal end portion and defining at least one lumen, the distal end portion being shaped to mate with the proximal end of the transition segment, the distal end portion being bonded to the proximal end of the transition segment.
Claim 19
Dependent Claim
102 words
A catheter comprising: (a) a transition segment having a proximal end, a central longitudinal axis, and defining at least one lumen, the proximal end having two ungular sections, one of each of the ungular sections being oriented at 30 degrees relative to the central longitudinal axis, the ungular sections having an angle of 60 degrees therebetween; and (b) a catheter shaft having a distal end portion and defining at least one lumen, the distal end portion being shaped to mate with the proximal end of the transition segment, the distal end portion being bonded to the proximal end of the transition segment.
Claim 20
Dependent Claim
19 words
A catheter according to claim 16 wherein the transition segment is comprised of a Shore 55D durometer polyether-polyamide material.
Claim 21
Dependent Claim
23 words
A catheter according to claim 16 wherein the elongated catheter shaft is at least partially comprised of a 70D shore durometer polyether-polyamide material.
References Cited (Backward Citations)
US4283447A
Cited
US4899787A
Cited
US4540404A
Cited
US4563181A
Cited
US4531943A
Cited
US4551292A
Cited
US4921483A
Cited
US4886506A
Cited
US4863442A
Cited
US5078702A
Cited
WO1989009634A1
Cited
US4931037A
Cited
US5292311A
Cited
US5279596A
Cited
US5178158A
Cited
US5160559A
Cited
US5234416A
Cited
US5221270A
Cited
US5205830A
Cited
US5342383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-23 | 1999-10-23 | 2000-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-23 | 2003-10-23 | 2004-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-23 | 2007-10-23 | 2008-04-23 | $7700.00 | Window Closed / Lapsed |