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US 5,545,149 AGranted
Method of catheter segment attachment
AssigneeMedtronic, Inc.
InventorsDavid S. Brin, Peter A. Lunn, Stuart R. MacDonald
Life of this patent
Estimating the term…
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).
Claims24
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.
2 more elements
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.
2 more elements
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.
2 more elements
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.
3 more elements
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.
4 more elements
Dependencies are inferred from the claim text.