WO2007144033A1 - Dispositif formant ciseaux - Google Patents

Dispositif formant ciseaux Download PDF

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Publication number
WO2007144033A1
WO2007144033A1 PCT/EP2007/001787 EP2007001787W WO2007144033A1 WO 2007144033 A1 WO2007144033 A1 WO 2007144033A1 EP 2007001787 W EP2007001787 W EP 2007001787W WO 2007144033 A1 WO2007144033 A1 WO 2007144033A1
Authority
WO
WIPO (PCT)
Prior art keywords
cut
blade
cutting
scissor device
blades
Prior art date
Application number
PCT/EP2007/001787
Other languages
German (de)
English (en)
Inventor
Michael Hauser
Original Assignee
Dannoritzer Medizintechnik Gmbh & Co. Kg
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 Dannoritzer Medizintechnik Gmbh & Co. Kg filed Critical Dannoritzer Medizintechnik Gmbh & Co. Kg
Publication of WO2007144033A1 publication Critical patent/WO2007144033A1/fr

Links

Classifications

    • 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
    • A61B17/3201—Scissors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1604—Chisels; Rongeurs; Punches; Stamps
    • A61B17/1606—Chisels; Rongeurs; Punches; Stamps of forceps type, i.e. having two jaw elements moving relative to each other
    • A61B17/1608—Chisels; Rongeurs; Punches; Stamps of forceps type, i.e. having two jaw elements moving relative to each other the two jaw elements being linked to two elongated shaft elements moving longitudinally relative to each other

Definitions

  • the invention is based on a scissor device according to the preamble of claim 1.
  • shear devices with two blades, each having a cut surface.
  • the cutting surfaces of the blades of the scissors device are aligned so that the two cutting surfaces are arranged when cutting within different levels, the differing levels include an angle.
  • the invention is in particular the object of providing a scissor device according to the invention, which is advantageous nachschleifbar, with a comfortable cutting property. It is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims. Advantages of the invention
  • the invention is based on a scissors device, in particular for medical purposes, with two blades, each having a cut surface.
  • the cut surfaces are aligned parallel to each other, whereby particularly comfortable cutting properties can be achieved for an operator of the scissor device.
  • the scissor device forms a surgical cutting tool, which allows in particular with the parallel aligned cut surfaces a straight, guillotine-like cut, so that a clean and pinch-free cutting, especially in surgical procedures, can be achieved.
  • the cutting edge of the scissor device can be extended by the parallel aligned cut surfaces, since the cut edges partially regrind themselves when using the scissors device.
  • the cut edges can be reground particularly easily and easily along an entire length of the parallel aligned cut surface.
  • a cutting surface is understood to mean a surface of a blade which is arranged along a cutting edge of the scissor device and, in a closed operating state of the scissor device, faces a surface of a further blade and touches it in at least one point.
  • At least one blade has a hook-like shape, whereby the object to be cut in a structurally simple manner in the region of Cutting edges can be kept.
  • this can be achieved if at least one cutting edge is arranged at least partially along the hook-like formation.
  • the escape of an object to be cut, such as the escape of blood vessels, muscle fibers, etc., along the cutting edge can be avoided by the hook-like formation of at least one of the cut edges.
  • the hook-like formation is formed by a bow-shaped formation, whereby a particularly gentle treatment by an operator of the scissor device can be achieved.
  • the arc-like shape results in a corner-free blade and / or cutting edge, through which injuries, such as bruising of blood vessels, can be avoided.
  • an arc-shaped formation is to be understood to mean a formation of a blade, wherein the formation in a cutting position of the scissor device forms a surface framed by both blades and / or cutting edges.
  • both blades are preferably provided with a hook-like formation, it is possible in a particularly advantageous manner to achieve holding on both sides of an object to be cut. In particular, escape of the object to be cut, such as a blood vessel, along the cutting edge can be avoided, and thus the cutting process can be made more comfortable for an operator of the scissor device.
  • the scissors device has at least one cutting position in which the two cut surfaces form two points of intersection.
  • a particularly high cutting comfort of the scissor device can be achieved by producing a guillotine-like cut which tapers from both sides onto a center of the cut edge.
  • an intersection is to be understood as a point in which the two edges, which are each covered by a blade, touch one another.
  • At least one of the cut surfaces has two substantially parallel, arcuately shaped edges, whereby the cut surfaces have almost the same width along their main extension direction and thus the cutting properties along the cut surfaces or the cut edges remain almost the same.
  • two edges are to be understood as substantially parallel edges, which have almost the same distance along their extension directions, wherein the distance along the extension directions preferably by a maximum of 15%, advantageously by a maximum of 10% and more preferably by a maximum of 5% compared to a middle Distance between the two edges differs from each other.
  • a support surface is understood to mean a partial region of a blade surface. the one which is connected to the other blade surface by a perpendicular to the blade surfaces of the two blades aligned axis of rotation.
  • At least a portion of a blade surface of at least one blade is step-like, whereby particularly good sliding properties of an object to be cut in a cutting operation on the cut surfaces and / or the cut edges can be achieved. Due to the step-like formation only portions of the blade during a cutting operation with the object to be cut in contact, so that thereby the friction between the object to be cut and the blade or the friction between the two cutting surfaces can be minimized.
  • At least one step-like extension comprises one of the cut surface, whereby the friction between the object to be cut and the blade or between the two blades can be reduced to a region of the cut surfaces in a particularly advantageous manner.
  • the blade surfaces and the cut surface are formed substantially parallel, so that in addition to a low-friction sliding property of an object to be cut or between the two cutting surfaces during a cutting operation along the blade surface also an advantageous Stability of the scissor device can be achieved.
  • an alignment of the blade surface and the cutting surface is to be understood as being essentially parallel and has an angle of preferably less than 15 °, advantageously less than 8 ° and particularly advantageously less than 3 °, enclosed by the blade surface and the cutting surface.
  • Fig. 1 is a schematic representation of a scissor device, Fig. 2.
  • the scissor device of Figure 1 in one
  • Fig. 3 is a section through the scissor device
  • FIG. 2 and FIG. 4 a scissor device from FIG. 1 in a further cutting position.
  • FIG. 1 shows a surgical cutting tool for medical purposes formed by a scissors device with a scissors main body 46 and two blades 10, 12.
  • the scissors main body 46 comprises on a side facing away from the blades 10, 12 a cylindrical receiving region 48 which is for receiving the scissor device a not shown operating device for operating the scissor device is used.
  • the two blades 10, 12 are connected by a bolt-shaped axis of rotation 50 together.
  • the axis of rotation 50 is aligned perpendicular to a main extension direction 52 of the main body of the scissors 46 and perpendicular to a thickness 54, 56 of the two blades 10, 12.
  • the two blades 10, 12 each have a blade surface 38, 40 and a bearing surface 34, 36, wherein the blade surfaces 38, 40 and the bearing surfaces 34, 36 on a respectively side of the blade 10, 12 facing the blade 10, 12 are arranged ( Figures 1, 2 and 4).
  • the bearing surfaces 34, 36 are aligned parallel to each other, so that the two blades 10, 12 abut against each other at the two bearing surfaces 34, 36. Perpendicular to the two bearing surfaces 34, 36 of the blades 10, 12, the bolt-shaped axis of rotation 50 passes through the bearing surfaces 34, 36th
  • the blade 10 is integrally formed on the main scissors body 46 along its main extension direction 52 ( Figures 2 and 4).
  • the scissors main body 46 comprises a recess 58 whose main extension surface is parallel to the support surface 34 of the blade 10 formed on the scissors main body 46.
  • the recess 58 together with a U-shaped border 60 surrounding the recess 46 of the main scissors body 46, forms a receiving area for receiving the second blade 12 (FIG. 1).
  • the bolt-shaped axis of rotation 50 extends perpendicular to two parallel and opposite surfaces of the U-shaped border 60 of the recess 58 through this.
  • a perpendicular to the main extension surface of the recess 58 oriented thickness 64 of the recess 58 is dimensioned so that the introduced into the recess 58 blade 12 is rotatable perpendicular to the rotation axis 50 free of play.
  • the blades 10, 12 each include the support surface 34, 36 and the blade surface 38, 40, wherein the blade surface 38, 40 has a cutting surface 14, 16 ( Figures 1, 2 and 4).
  • the cut surfaces 14, 16 of the two blades 10, 12 are aligned parallel ( Figure 3), so that so that a straight, guillotine-like cut is achieved.
  • the cut surfaces 14, 16 are arranged with the respectively of the blade 10, 12 bearing surfaces 34, 36 within a plane.
  • the two blades 10, 12 have in the region of the blade surface 38, 40 each have a hook-like shape 18, 20, wherein the hook-like formation 18, 20 is formed by an arc-like shape ( Figures 2 and 4).
  • the cut surfaces 14, 16 are integrally formed along a main extension direction 66 of the blade surfaces 38, 40.
  • the cut surfaces 14, 16 are arranged in the region of one side of the blade surfaces 38, 40 facing the other blade 10, 12.
  • the cut surfaces 14, 16 of the two blades 10, 12 are arranged along the hook-like formation 18, 20, so that thereby an object to be cut, in particular blood vessels, muscle fibers, etc., by means of the hook-like formation 18, 20 when cutting by the scissor device is recorded.
  • the cut surfaces 14, 16 are thereby delimited along the main extension direction 66 of the blade surfaces 38, 40 by a respective cut edge 22, 24 and a parallel edge 30, 32, so that the cut edge 22, 24 is arranged along the hook-like formation 18, 20 ,
  • the cut edges 22, 24 of the two blades 10, 12 are arranged on the cut surfaces 14, 16 so that they form an opening angle 68 in the open state of the scissor device, in which an object to be cut can be introduced (Figure 2).
  • the blades 10, 12 or the parallel cut surfaces 14, 16 along the cutting edges 22, 24 are formed by the arc-like shape so that when closing the scissors device from a certain opening angle, a cutting position is reached at which the cut edges 22, 24 in two points of intersection 26, 28 touch, as shown in Figure 4.
  • an object to be cut is cut on both sides along the cut edges 22, 24 during the closing of the scissor device in guillotine-like fashion by the parallel aligned cut surfaces 14, 16.
  • an escape of an object to be cut forward can be avoided by the arc-shaped
  • Blades 10, 12 limit a space required for escape.
  • the blade surfaces 38, 40 of the two blades 10, 12 are formed stepwise perpendicular to the main extension directions 66 of the blades 10, 12.
  • a step-like extension 42, 44 extends along the cutting edge 22, 24 and in this case encompasses the region of the cut surface 14, 16 (FIGS. 1 to 4).
  • the blade surface 38, 40 and the cut surface 14, 16 of a blade 10, 12 are therefore aligned parallel and stepped offset.
  • the thickness 54, 56 of the blade 10, 12 in the region of the cut surface 14, 16 is greater than the thickness 54, 56 of the blade 10, 12 in the region of the remaining blade surface 38, 40 ( Figure 2). Due to the step-like shaping of the blade 10, 12, the cut surfaces 14, 16 of the blade surfaces 38, 40 form a contact plane during cutting, the blade surfaces 38, 40 of the respective blade 10, 12 being arranged at a distance from this contact plane, so that during cutting the frictional forces between the cut surfaces 14, 16 and between one to cutting object and the cut surfaces 14, 16 and the blade surfaces 38, 40 are reduced to a minimum.

Landscapes

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

Abstract

La présente invention concerne un dispositif formant ciseaux, en particulier à usage médical, pourvu de deux lames (10, 12), présentant chacune une surface de coupe (14, 16). Les surfaces de coupe (14, 16) s'étendent parallèlement l'une par rapport à l'autre.
PCT/EP2007/001787 2006-06-13 2007-03-02 Dispositif formant ciseaux WO2007144033A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006027299.4 2006-06-13
DE200610027299 DE102006027299A1 (de) 2006-06-13 2006-06-13 Scherenvorrichtung

Publications (1)

Publication Number Publication Date
WO2007144033A1 true WO2007144033A1 (fr) 2007-12-21

Family

ID=38163663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/001787 WO2007144033A1 (fr) 2006-06-13 2007-03-02 Dispositif formant ciseaux

Country Status (2)

Country Link
DE (1) DE102006027299A1 (fr)
WO (1) WO2007144033A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2360729A1 (de) * 1973-12-06 1975-06-12 Wendel Dr Ing Eberhard Verfahren zur herstellung einer handschere und nach diesem verfahren hergestellte schere
DE3607907C1 (de) * 1986-03-10 1987-08-13 Andreas Dr-Ing Gerve Schneidwerkzeug
FR2605545A1 (fr) * 1986-10-22 1988-04-29 Gautier Jean Perfectionnements aux instruments travaillant par cisaillement
US5486189A (en) * 1990-10-05 1996-01-23 United States Surgical Corporation Endoscopic surgical instrument

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061167B (en) * 1979-10-26 1982-12-22 Wiltshire Cutlery Co Pty Scissors
DE8528824U1 (de) * 1985-10-10 1985-11-21 NIKO Nippert Maschinenbau, 7580 Bühl Handschere mit druckmittelbetriebenem Antrieb
DE19626069A1 (de) * 1996-06-28 1998-01-08 Heiss Josef Medizintech Elektrisch beheizbare Schere

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2360729A1 (de) * 1973-12-06 1975-06-12 Wendel Dr Ing Eberhard Verfahren zur herstellung einer handschere und nach diesem verfahren hergestellte schere
DE3607907C1 (de) * 1986-03-10 1987-08-13 Andreas Dr-Ing Gerve Schneidwerkzeug
FR2605545A1 (fr) * 1986-10-22 1988-04-29 Gautier Jean Perfectionnements aux instruments travaillant par cisaillement
US5486189A (en) * 1990-10-05 1996-01-23 United States Surgical Corporation Endoscopic surgical instrument

Also Published As

Publication number Publication date
DE102006027299A1 (de) 2007-12-20

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