US5545149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of catheter segment attachment
Assignee: Medtronic Inc
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Filing: 1994-05-02
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Granted: 1996-08-13
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Expires: 2014-05-02
Abstract
Abstract A therapeutic catheter and used in percutaneous transluminal coronary angioplasty with the catheter comprising a shaft (5) a soft tip assembly. The assembly consists of a transition tube (15), a soft tip tube (20), and plug tube (25). The assembly is surrounded by a shrink wrap means. An infrared source (45) is applied to the interface of the shaft (5) and transition tube (15) with the heat being propagated to the transition tube (15) and the soft tip tube (20). The transition tube (15) is formed of materials having a tensile strength of at least 150% of the materials comprising the soft tip tube (20).
Inventors
- 👤 David S. Brin
- 👤 Peter A. Lunn
- 👤 Stuart R. MacDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/001; A61M25/0043; A61M25/0045; A61M25/0054; A61M25/0067; A61M25/0068; A61M25/0069; B; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/66; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/114; B29C66/1142; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/53; B29C66/532; B29C66/5324; B29C66/53241; B29C66/63; B29C66/70; B29C66/73; B29C66/731; B29C66/7315; B29C66/73151; B29C66/73152; B29C66/737; B29C66/7371; B29C66/73715; B29C66/80; B29C66/82; B29C66/826; B29C66/8264; A61M25/005; A61M25/0053; B29C65/1403; B29C65/1412; B29C66/534; B29C66/5344; B29C66/71; B29C66/739; B29C66/7392; B29K; B29K2995/00; B29K2995/0037; B29K2995/007; B29L; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
175 words
A catheter comprising: (a) an elongated shaft having an inner diameter, a proximal end and a distal end, the shaft defining at least one lumen, the shaft having a lubricous liner coating the inner diameter of the shaft; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft, the transition tube being generally free of the lubricous liner; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube, the tip tube being free of the lubricous liner; and (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube.
Claim 2
Dependent Claim
175 words
A catheter comprising: (a) an elongated shaft having an inner diameter, a proximal end and a distal end, the shaft defining at least one lumen, the shaft having a lubricous liner coating the inner diameter of the shaft; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft, the transition tube being generally free of the lubricous liner; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube, the tip tube being free of the lubricous liner; and (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube.
Claim 3
Dependent Claim
14 words
A catheter according to claim 1 wherein the shaft consists of 75D durometer tubing.
Claim 4
Dependent Claim
15 words
A catheter according to claim 1 wherein the transition tube is approximately 2.5 mm long.
Claim 5
Dependent Claim
19 words
A catheter according to claim 1 wherein the transition tube is made of 65D Durometer polyurethane loaded with radiopacifier.
Claim 6
Dependent Claim
27 words
A catheter according to claim 1 wherein the transition tube is selected from a group of thermoplastic elastomers having a tensile strength of at least 45 Mpa.
Claim 7
Dependent Claim
24 words
A catheter according to claim 1 wherein the tip tube is approximately 0.5 cm long with a tolerance of plus or minus 1 min.
Claim 8
Dependent Claim
23 words
A catheter according to claim 1 wherein the tip tube is made of a clear polymer to which titanium dioxide has been added.
Claim 9
Dependent Claim
43 words
A catheter according to claim 1 having an elongated plug tube having a proximal end and a distal end, the plug tube defining at least one lumen, the proximal end of the plug tube affixed to the distal end of the tip tube.
Claim 10
Dependent Claim
19 words
A catheter according to claim 8 wherein the plug tube consists of approximately 2.5 mm of 75D Durometer tubing.
Claim 11
Dependent Claim
89 words
A catheter according to claim 8 wherein a mandrel extends into the distal end of the lumen of the plug tube and exits the proximal end of the lumen of the plug tube, then extends into the distal end of the lumen of the tip tube and exits the proximal end of the lumen of the tip tube, then extends into the distal end of the transition tube and exits the proximal end of the transition tube, and extends into the distal end of the lumen of the shaft.
Claim 12
Dependent Claim
29 words
A catheter according to claim 10 wherein the mandrel extends approximately 15.2 cm beyond the distal end of the shaft and is shaped to closely fit within the shaft.
Claim 13
Dependent Claim
15 words
A catheter according to claim 10 wherein the mandrel consists of TEFLON® coated stainless steel.
Claim 14
Dependent Claim
24 words
A catheter according to claim 1 wherein the distal end of the shaft blends and flows with the proximal end of the transition tube.
Claim 15
Dependent Claim
25 words
A catheter according to claim 1 wherein the distal end of the transition tube blends and flows with the proximal end of the tip tube.
Claim 16
Dependent Claim
25 words
A catheter according to claim 8 wherein the distal end of the tip tube blends and flows with the proximal end of the plug tube.
Claim 17
Dependent Claim
48 words
A catheter according to claim 8 wherein a mandrel extends longitudinally through the shaft lumen, the transition tube lumen, the tip tube lumen and the plug tube lumen and wherein the mandrel, plug tube, tip tube and transition tube are enclosed within a tube of heat shrink material.
Claim 18
Dependent Claim
15 words
A catheter according to claim 16 wherein the heat shrink tubing is 10 cm long.
Claim 19
Dependent Claim
186 words
A catheter comprising: (a) an elongated shaft having an inner diameter a proximal end and a distal end, the shaft defining at least one lumen, the shaft having a reinforcement member embedded at least partially within the shaft and a lubricious liner coating the inner diameter of the shaft; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft, the transition tube being generally free of the lubricious liner; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube, the tip tube being free of the lubricious liner; and (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube.
Claim 20
Dependent Claim
186 words
A catheter comprising: (a) an elongated shaft having an inner diameter a proximal end and a distal end, the shaft defining at least one lumen, the shaft having a reinforcement member embedded at least partially within the shaft and a lubricious liner coating the inner diameter of the shaft; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft, the transition tube being generally free of the lubricious liner; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube, the tip tube being free of the lubricious liner; and (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube.
Claim 21
Dependent Claim
14 words
A catheter according to claim 18 wherein the reinforcement member comprises a wire braid.
Claim 22
Dependent Claim
142 words
A catheter comprising: (a) an elongated shaft having a proximal end and a distal end, the shaft defining at least one lumen; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the up tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube; and (d) the elongated transition tube being formed of 65D Durometer polyurethane that has a tensile strength of at least 150% of that of the elongated tip tube.
Claim 23
Dependent Claim
142 words
A catheter comprising: (a) an elongated shaft having a proximal end and a distal end, the shaft defining at least one lumen; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the up tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube; and (d) the elongated transition tube being formed of 65D Durometer polyurethane that has a tensile strength of at least 150% of that of the elongated tip tube.
Claim 24
Dependent Claim
19 words
A catheter comprising: a transition tube according to claim 20 wherein the transition tube is loaded with a radiopacifier.
Claim 25
Dependent Claim
190 words
A catheter comprising: (a) an elongated shaft having a proximal end and a distal end, the shaft defining at least one lumen; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube; (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube; and (e) an elongated plug tube having a proximal end and a distal end, the plug tube defining at least one lumen, the proximal end of the plug tube being affixed to the distal end of the tip tube, the plug tube consisting of approximately 2.5 mm of 75D Durometer tubing.
Claim 26
Dependent Claim
190 words
A catheter comprising: (a) an elongated shaft having a proximal end and a distal end, the shaft defining at least one lumen; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube; (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube; and (e) an elongated plug tube having a proximal end and a distal end, the plug tube defining at least one lumen, the proximal end of the plug tube being affixed to the distal end of the tip tube, the plug tube consisting of approximately 2.5 mm of 75D Durometer tubing.
Claim 27
Dependent Claim
220 words
A catheter comprising: (a) an elongated shaft having a proximal end and a distal end, the shaft defining at least one lumen; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube; (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube; (e) an elongated plug tube having a proximal end and a distal end, the plug tube defining at least one lumen, the proximal end of the plug tube being affixed to the distal end of the tip tube; and (f) a mandrel extending longitudinally through the shaft lumen, the transition tube lumen, the tip tube lumen and the plug tube lumen and wherein the mandrel, plug tube, tip tube and transition tube are enclosed within a tube of heat shrink material.
Claim 28
Dependent Claim
220 words
A catheter comprising: (a) an elongated shaft having a proximal end and a distal end, the shaft defining at least one lumen; (b) an elongated transition tube having a proximal end and a distal end, the transition tube defining at least one lumen, the proximal end of the transition tubing being affixed to the distal end of the shaft; (c) an elongated tip tube having a proximal end and a distal end, the tip tube defining at least one lumen, the proximal end of the tip tube being affixed to the distal end of the transition tube and the tip tube being made of materials having a lower melt temperature than the transition tube; (d) the elongated transition tube being formed of materials having a tensile strength of at least 150% of the materials comprising the elongated tip tube; (e) an elongated plug tube having a proximal end and a distal end, the plug tube defining at least one lumen, the proximal end of the plug tube being affixed to the distal end of the tip tube; and (f) a mandrel extending longitudinally through the shaft lumen, the transition tube lumen, the tip tube lumen and the plug tube lumen and wherein the mandrel, plug tube, tip tube and transition tube are enclosed within a tube of heat shrink material.
Claim 29
Dependent Claim
15 words
A catheter according to claim 23 wherein the heat shrink tubing is 10 cm long.
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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) | 1999-08-13 | 2000-02-12 | 2000-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-13 | 2004-02-12 | 2004-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-13 | 2008-02-12 | 2008-08-13 | $7700.00 | Window Closed / Lapsed |