EP0541249B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Ultrasonic handpiece

Assignee: Surgical Design Corp

•

Filing: 1992-10-08

•

Granted: 1996-07-03

•

Expires: 2012-10-08

📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract An ultrasonic handpiece incorporating a transducer of the magnetostrictive type in which a stack of laminations (20) is divided into two groups and at least one liquid supply tube (26) extends at least part way along the length of the lamination in the space (22) between the two groups. A further tube (28) supplies irrigation liquid to the interior of the handpiece from which it passes through a sleeve (104) embracing the handpiece tip. An elastomeric sleeve (90) embraces part of handpiece body to prevent cavitation in the irrigation liquid and consequent loss of power. The end of the tip (40) is hollow and belled (44) to direct ultrasonic energy radiated from the internal wall of the hollow end at material against which the tip is placed. <IMAGE> <IMAGE>

Inventors

👤 Igor Strukel

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-10-28 03:49

CPC Classifications

A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745; B; B06; B06B; B06B1/00; B06B1/02; B06B1/08; B06B1/085; A61B; A61B17/00; A61B17/22; A61B17/22004; A61B2017/22005; A61B2017/22007; A61B2017/22009; A61B17/32; A61B17/320068; A61B2017/320084

Claims Analysis

Total Claims: 5

Claim 1

Independent Claim 100 words

A handpiece for directing ultrasonic energy at an object, comprising: a transducer (16,20) for converting electrical energy into vibrations at an ultrasonic frequency; a transition body (60) for transmitting the vibrational energy to a detachable tip member (40), the body having in it at least one passage (28P) for conveying an irrigation liquid to the tip member; and characterised by a sleeve (90) of elastomeric material embracing the tip end (72) of the transition body (60), and an external shell (86) spaced outwardly of the sleeve to define therebetween a passage (91) in fluid communication with the irrigation passage (28P).

Claim 2

Dependent Claim 39 words

A handpiece as claimed in Claim 1, in which the tip member (40) is hollow, having its interior in fluid communication with one of the conduits (26) in the housing through a passage (26P) in the transition body (60).

Claim 3

Dependent Claim 79 words

A handpiece as claimed in Claim 2, in which the transition body has part (72) of its length embraced by a sleeve (90) of elastomeric material, in which the transition body supports a shell (86) encircling the sleeve and forming with it a fluid-flow passage in communication with a conduit (28) in the housing through a passage (28P) in the transition body, whereby for part of its length the transition body is mechanically insulated from the said fluid-flow passage.

Claim 4

Dependent Claim 50 words

A handpiece as claimed in Claim 1 or 3, in which one end of the sleeve (90) extends beyond the respective end of the transition body (60) and is adapted to be in fluid-tight contact with an outer surface of the tip member (40) when in position on the handpiece.

Claim 5

Dependent Claim 82 words

A handpiece as claimed in any preceding claim, in which the other end of the transition body (60) is detachably connected to a housing (12) for the transducer, the housing including at least one conduit (26,28) for liquid, the or each conduit being secured at one end to a support (67) able to be clamped to one end of the transition body, with the interior of the or each conduit in fluid communication with a respective passage (28P,26P) in the transition body.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag

Select Category

Notes (Optional)