CA2276309A1 - Curved ultrasonic blade having a trapezoidal cross section - Google Patents

Curved ultrasonic blade having a trapezoidal cross section Download PDF

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Publication number
CA2276309A1
CA2276309A1 CA002276309A CA2276309A CA2276309A1 CA 2276309 A1 CA2276309 A1 CA 2276309A1 CA 002276309 A CA002276309 A CA 002276309A CA 2276309 A CA2276309 A CA 2276309A CA 2276309 A1 CA2276309 A1 CA 2276309A1
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CA
Canada
Prior art keywords
blade
section
curved
width
trapezoidal cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002276309A
Other languages
French (fr)
Other versions
CA2276309C (en
Inventor
Jean M. Beaupre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ethicon Endo Surgery Inc
Original Assignee
Ethicon Endo Surgery Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ethicon Endo Surgery Inc filed Critical Ethicon Endo Surgery Inc
Publication of CA2276309A1 publication Critical patent/CA2276309A1/en
Application granted granted Critical
Publication of CA2276309C publication Critical patent/CA2276309C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • A61B2017/320074—Working tips with special features, e.g. extending parts blade
    • A61B2017/320077—Working tips with special features, e.g. extending parts blade double edge blade, e.g. reciprocating

Abstract

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.
CA002276309A 1998-06-29 1999-06-25 Curved ultrasonic blade having a trapezoidal cross section Expired - Lifetime CA2276309C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/106,415 1998-06-29
US09/106,415 US6309400B2 (en) 1998-06-29 1998-06-29 Curved ultrasonic blade having a trapezoidal cross section

Publications (2)

Publication Number Publication Date
CA2276309A1 true CA2276309A1 (en) 1999-12-29
CA2276309C CA2276309C (en) 2008-02-26

Family

ID=22311299

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002276309A Expired - Lifetime CA2276309C (en) 1998-06-29 1999-06-25 Curved ultrasonic blade having a trapezoidal cross section

Country Status (7)

Country Link
US (6) US6309400B2 (en)
EP (1) EP0970659B1 (en)
JP (1) JP2000041991A (en)
AU (2) AU764781B2 (en)
CA (1) CA2276309C (en)
DE (1) DE69933514T2 (en)
ES (1) ES2274604T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110811770A (en) * 2018-08-14 2020-02-21 北京锐诺医疗技术有限公司 Ultrasonic knife conduction rod and ultrasonic knife

Families Citing this family (667)

* Cited by examiner, † Cited by third party
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