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WO1992019163A1 - Support pour lame - Google Patents

Support pour lame Download PDF

Info

Publication number
WO1992019163A1
WO1992019163A1 PCT/GB1992/000794 GB9200794W WO9219163A1 WO 1992019163 A1 WO1992019163 A1 WO 1992019163A1 GB 9200794 W GB9200794 W GB 9200794W WO 9219163 A1 WO9219163 A1 WO 9219163A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
arms
holder according
finger
fingers
Prior art date
Application number
PCT/GB1992/000794
Other languages
English (en)
Inventor
William John Hoskin
Original Assignee
Micra Developments Limited
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 Micra Developments Limited filed Critical Micra Developments Limited
Publication of WO1992019163A1 publication Critical patent/WO1992019163A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3209—Incision instruments
    • A61B17/3211—Surgical scalpels, knives; Accessories therefor
    • A61B17/3213—Surgical scalpels, knives; Accessories therefor with detachable blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades

Definitions

  • the present invention relates no blade holders.
  • Cutting tools such as scalpels used for surgery and knives used by artists, model markers, and engineers often comprise a holder into which replaceable blades can be mounted.
  • the holder comprises a head portion projecting from the end of a handle portion.
  • the head portion is in the form of an elongate rib having guide grooves in opposite flanks.
  • the scalpel blade has a central slot of enlarged width at one end which is stepped down to a narrower width at the other end. In operation the wider portion of the slot is fitted over the rib and the blade is slid towards the handle to cause the sides of the narrower portion of the slot to engage the guide grooves.
  • a blade holder comprising a pair of arms each terminating in a finger, the arms being pivotally interconnected so that the fingers can be angularly displaced from a position in which the end portions thereof are laterally spaced, to a position on which they are superimposed one upon the other, the facing surfaces of the end portions when superimposed being sufficiently spaced to
  • Figure 1 is a plan view of the blade holder open ready to receive a blade
  • Figure 2 is a plan view of the blade holder closed with the blade loaded therein;
  • Figure 3 is a plan view of the lower arm of the blade holder
  • Figure 4 is a plan view of the lower arm of the blade holder with a blade resting thereon;
  • Figure 5 is a side elevation of the lower arm of Figure 3;
  • Figure 6 is a side elevation of the blade holder closed (to an enlarged scale);
  • Figure 7 is an under plan view of the handle end of the upper arm of the blade holder of Figure 1;
  • Figure 8 is a fragmentary view of a modified version of the two arms of the blade holder.
  • FIG. 2 shows a surgical scalpel comprising a surgical blade 2 and a blade holder 4.
  • the blade holder 4 as shown more clearly in Figure 1, comprises a
  • the two arms have a generally similar profile and can be moved between a closed position in which the two arms lie one on top of the other and an open position in which the two arms adopt a cruciform configuration in the manner of a pair of open scissors.
  • Each arm 6 and 8 has an elongate handle portion 6A and 8A to one side of the pivot 10 and a slender finger portion 6B and 8B to the other side of the pivot
  • the surface of the finger 6B which faces the finger 8B (when the two fingers are superimposed) is planar, while the facing surface of finger 8B is stepped. Upstanding from the stepped surface are two posts, a small diameter post 12 and a large diameter post 14. The stepped surface can be more clearly seen in Figure 5. As shown when moving in a direction away from the pivot 10 towards the end of the finger 8B there is a step 16, the surface then slopes downwardly at an angle of at least 1 ⁇ 4o and preferably 1 ⁇ 2° towards the large diameter post 14.
  • the handle portions 8A and 6A are provided with respective recesses 8C and 6C on opposite sides so that by squeezing the holder 4 from opposite sides in the regions of the recesses, the two handle portions can be moved from the superimposed state (see Figure 2), to a slightly open state.
  • the surface of the handle portion 8A which faces the handle portion 6A (when the two handle portions are superimposed) has a part-spherical recess 20 with
  • the facing surface of the handle portion 6A (see Figure 7) has a part- spherical projection 26 which is arranged to engage one or other of two grooves 22 and 24 of converging cross- section and be guided into the recess 20 during closure of the two arms 6 and 8.
  • a surgical blade 2 is placed on the stepped portion of the finger 8B (see Figure 4).
  • the blade has a cutting edge 30 and a central slot 32.
  • the slot 32 is narrower towards the cutting edge 30 and wider at the opposite end.
  • the width of the slot at the narrow end just exceeds the diameter of the small diameter post 12 and the width of the slot at the wider end, just exceeds the diameter of the large diameter post 14.
  • the height of the posts 14 and 12 is smaller than the thickness of the blade 2, and the blade 2 because of the sloping portion 18, slopes slightly downwardly towards the cutting edge.
  • the finger 6B wipes across the upper surface of the blade.
  • the projection 26 engages one of the grooves 22 or 24 and is guided into the recess 22.
  • the diameters of the projection 26 and the recess 20 are such that the handle portions 6A and 8A are moved apart at their distal ends, and in so doing, introduce a bending moment in the arm 8, which, because it is thinner than arm 6, flexes away from the arm 6 (see Figure 6). This causes the finger 8B to bend and press against the blade 2 so that the blade is deformed out of its plane against its own resilience.
  • the facing surfaces of the fingers may be roughened or treated with a hard material, such as tungsten carbide.
  • the rough material, such as tungsten carbide serves both to improve the grip on the blade, is wear resistant and resists relative movement between the arms of the blade holder when they are closed.
  • the two arms 6 and 8 are imprisoned by a rivet.
  • the two arms are separable and can be locked together in a pivotal manner with the aid of a keyhole slot 40 in the arm 8 and a headed screw 42 or other projection in the arm 6. In this manner proper sterilisation of the knife holder can take place.
  • the knife holder can be made of plastics, stainless steel, titanium or aluminium.
  • the profile of the facing surface need not have a sloping surface as
  • the term 'slotted blade' is intended to encompass any blade including an opening which can be engaged by locating means on the facing surface (usually a pin) to locate the blade in position but allow the blade to flex slightly. In practice most of such blades will have an elongate slot as illustrated since there are many of these commercially available.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)

Abstract

Support pour lames chirurgicales, (4) possédant une paire de bras (6, 8) reliée par un pivot (10) et se terminant chacun par un doigt (6B, 8B). L'un des doigts (8B) posséde un paire de tétons de positionnement (12, 14) permettant de positionner une lame perforée (2) sur sa surface. Lorsque l'on ferme les deux doigts par un mouvement en ciseau, la lame (2) se retrouve coincée entre les deux doigts (6B, 8B). Une lame (26) agit sur les deux bras (8, 6) au niveau de leurs extrémités distales de façon à les écarter l'un de l'autre suivant une direction normale au déplacment angulaire précédant la superposition des doigts. Les surfaces en vis-à-vis sont profilées de telle sorte que lorsqu'elles se cambrent l'une vers l'autre, suite au déplacement des extrémités distales des bras en éloignement l'un de l'autre, elles provoquent le fléchissement de la lame assurant ainsi une meilleure prise de celle-ci.
PCT/GB1992/000794 1991-05-01 1992-04-30 Support pour lame WO1992019163A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9109347A GB2255926A (en) 1991-05-01 1991-05-01 Blade holder.
GB9109347.6 1991-05-01

Publications (1)

Publication Number Publication Date
WO1992019163A1 true WO1992019163A1 (fr) 1992-11-12

Family

ID=10694235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000794 WO1992019163A1 (fr) 1991-05-01 1992-04-30 Support pour lame

Country Status (3)

Country Link
AU (1) AU1671492A (fr)
GB (1) GB2255926A (fr)
WO (1) WO1992019163A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103027728A (zh) * 2012-12-11 2013-04-10 张菊芳 毛发移植小针刀
WO2013159183A1 (fr) * 2012-04-26 2013-10-31 Kanigan Ryan Scalpel de sécurité
EP3372358B1 (fr) 2017-03-10 2021-07-21 The Gillette Company LLC Manche de rasoir

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060387A (en) * 1990-11-13 1991-10-29 Becton, Dickinson And Company Blade handle
GB2296213A (en) * 1994-12-19 1996-06-26 Microsurgical Equipment Ltd Blade holder
US8291601B2 (en) 2005-04-01 2012-10-23 Pankaj Kehr Reusable metal blade handle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE38984C (de) * H. HAERTEL in Breslau Lösbare Griffbefestigung für chirurgische und ärztliche Instrumente
DE100852C (fr) *
DE52071C (de) * FR. DRÖLL in Mannheim Zerlegbarer Griff für chirurgische Instrumente
DE435537C (de) * 1926-10-14 Gustav Goldman Messer mit auswechselbarer Klinge
US2191276A (en) * 1936-12-21 1940-02-20 Joseph A Gardner Knife
US2276928A (en) * 1939-05-11 1942-03-17 Edward A Christoph Cutting tool and holder
US3685152A (en) * 1970-08-25 1972-08-22 Irving Gish Razor blade holder
GB1413679A (en) * 1972-10-17 1975-11-12 Jra Steel Processing Ltd Cutting blade holders
EP0128711A2 (fr) * 1983-06-13 1984-12-19 The Stanley Works Outil coupant

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE38984C (de) * H. HAERTEL in Breslau Lösbare Griffbefestigung für chirurgische und ärztliche Instrumente
DE100852C (fr) *
DE52071C (de) * FR. DRÖLL in Mannheim Zerlegbarer Griff für chirurgische Instrumente
DE435537C (de) * 1926-10-14 Gustav Goldman Messer mit auswechselbarer Klinge
US2191276A (en) * 1936-12-21 1940-02-20 Joseph A Gardner Knife
US2276928A (en) * 1939-05-11 1942-03-17 Edward A Christoph Cutting tool and holder
US3685152A (en) * 1970-08-25 1972-08-22 Irving Gish Razor blade holder
GB1413679A (en) * 1972-10-17 1975-11-12 Jra Steel Processing Ltd Cutting blade holders
EP0128711A2 (fr) * 1983-06-13 1984-12-19 The Stanley Works Outil coupant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159183A1 (fr) * 2012-04-26 2013-10-31 Kanigan Ryan Scalpel de sécurité
GB2515701A (en) * 2012-04-26 2014-12-31 Scalpel Innovation Inc Safety scalpel
GB2515701B (en) * 2012-04-26 2019-01-09 Scalpel Innovation Inc Safety scalpel
CN103027728A (zh) * 2012-12-11 2013-04-10 张菊芳 毛发移植小针刀
EP3372358B1 (fr) 2017-03-10 2021-07-21 The Gillette Company LLC Manche de rasoir

Also Published As

Publication number Publication date
GB9109347D0 (en) 1991-06-26
GB2255926A (en) 1992-11-25
AU1671492A (en) 1992-12-21

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