
US Patent No: 5,275,611
Number of patents in Portfolio can not be more than 2000
Tension guide and dilator
Stats
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Jan 4, 1994
Issued date -
Jul 13, 1992
filing date -
07/913,129
serial no -
In Force
status
Importance
Abstract
A dilator assembly for forming and enlarging percutaneous penetrations into body cavities includes an elongate guide member and one or more elongate dilation members. The guide member includes a retractable anchor near its distal end so that an outward force or tension may be maintained on the body cavity wall as successfully larger dilators are introduced over the guide member. In this way, the alignment of the guide member is maintained along the initial penetration and the tendency for the wall of the body cavity to separate from and invaginate into the surrounding fascia is reduced. Alternatively, means may be provided for internally tensioning or stiffening the guide member so that the guide member will remain aligned and resist withdrawal, buckling, and kinking as a dilator or working catheter is introduced.
First Claim
Related Publications
International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,844,092 Catheter Y-connector with guidewire locking means | 91 | 1988 | |
| 5,002,558 Adjustable urethral catheter and method for treating obstructive prostatism | 76 | 1989 | |
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| 4,932,959 Vascular catheter with releasably secured guidewire | 130 | 1988 | |
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| 4,772,266 Catheter dilator/sheath assembly and method | 225 | 1987 | |
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| 4,581,025 Sheath | 141 | 1983 | |
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| 4,888,000 Apparatus for the insertion of catheters | 79 | 1988 | |
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| 4,737,141 Method of draining the maxillary sinus for the treatment of maxillary sinusitis | 73 | 1985 | |
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| 4,649,916 Stiffening probe and tensioning device therefor | 7 | 1984 | |
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| 4,798,593 Stiffening of probes | 18 | 1987 | |
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| 4,865,593 Splittable cannula | 98 | 1988 | |
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| 4,757,827 Steerable guidewire with deflectable tip | 102 | 1987 | |
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| 5,024,658 Method and device for the diagnosis and treatment of nasal diseases | 54 | 1989 | |
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| 4,502,482 Endotracheal tube complex | 108 | 1983 | |
| 4,654,028 Incision opening expansion holder for inosculation | 48 | 1986 | |
| 4,994,027 Percutaneous femoral bypass system | 72 | 1989 | |