发明名称 |
CURVED ULTRASONIC BLADE HAVING A TRAPEZOIDAL CROSS SECTION |
摘要 |
A curved ultrasonic blade including a concave top surface, a convex bottom surface and a central ridge running along the concave top surface is described. In a curved blade according to the present invention the blade has a cross section which is substantially trapezoidal. The blade edges may be sharp or blunt and the convex bottom surface has a width of at least two times the width of the central ridge and, preferably, three times the width of the central ridge. A balanced ultrasonic instrument including a curved blade having a trapezoidal cross section is also described. A balanced ultrasonic surgical instrument according to the present invention includes an ultrasonic transmission rod which is connected to the curved blade by a balance portion which includes first and second balance asymmetries designed to compensate for the imbalances induced by asymmetry of the curved blade. |
申请公布号 |
CA2276309(A1) |
申请公布日期 |
1999.12.29 |
申请号 |
CA19992276309 |
申请日期 |
1999.06.25 |
申请人 |
ETHICON ENDO-SURGERY, INC. |
发明人 |
BEAUPRE, JEAN M. |
分类号 |
B26D7/08;A61B17/32;A61B18/00 |
主分类号 |
B26D7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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