Claims
- 1. A trocar comprising:
- an obturator having a piercing tip for pinking in tissue; and,
- a cannula comprising a spirally coiled wire wherein each coil of said wire is wound to be adjacent to a next coil of said wire thereby forming a tube shaped coil, said cannula having a proximal open end, for forming a passage in the pinked in tissue pinked in by the piercing tip, thereby enabling an insertion of one of an endoscope and a surgical tool into a body cavity.
- 2. The trocar according to claim 1, further comprising a housing mounted on the proximal open end of the cannula.
- 3. The trocar according to claim 1, further comprising a waterproof resin layer formed on one of a periphery and an inner perimeter of the cannula.
- 4. The trocar according to claim 2, wherein said housing includes seal means for closing an inlet nozzle formed on the housing.
Priority Claims (8)
Number |
Date |
Country |
Kind |
4-094472 |
Apr 1992 |
JPX |
|
4-094475 |
Apr 1992 |
JPX |
|
4-094477 |
Apr 1992 |
JPX |
|
4-095596 |
Apr 1992 |
JPX |
|
4-095597 |
Apr 1992 |
JPX |
|
4-095598 |
Apr 1992 |
JPX |
|
4-247978 |
Sep 1992 |
JPX |
|
4-329419 |
Dec 1992 |
JPX |
|
Parent Case Info
This application is a Continuation of application Ser. No. 08/045,354, filed Apr. 8, 1993.
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO04632 |
Mar 1993 |
WOX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
45354 |
Apr 1993 |
|