WO2017182030A1 - Tournevis - Google Patents

Tournevis Download PDF

Info

Publication number
WO2017182030A1
WO2017182030A1 PCT/DE2017/100268 DE2017100268W WO2017182030A1 WO 2017182030 A1 WO2017182030 A1 WO 2017182030A1 DE 2017100268 W DE2017100268 W DE 2017100268W WO 2017182030 A1 WO2017182030 A1 WO 2017182030A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
sleeve
threaded portion
screwdriver
spring element
Prior art date
Application number
PCT/DE2017/100268
Other languages
German (de)
English (en)
Inventor
Peter Witte
Original Assignee
Peter Witte
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 Peter Witte filed Critical Peter Witte
Priority to DE112017002085.9T priority Critical patent/DE112017002085A5/de
Publication of WO2017182030A1 publication Critical patent/WO2017182030A1/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
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • A61B17/8886—Screwdrivers, spanners or wrenches holding the screw head
    • A61B17/8888—Screwdrivers, spanners or wrenches holding the screw head at its central region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head

Definitions

  • the invention relates to a screwdriver for a screw with an inner profile having screw head drive, wherein the screwdriver has a blade with a blade tip arranged at one end with a in the inner profile of the screwdriver
  • Screw enkopfantriebs usable outer profile, and spaced from the blade tip outer threaded portion; a sleeve receiving the sleeve with a threaded with the arranged on the blade male threaded portion
  • Such a screwdriver is known in particular from DE 20 2005019 646 Ul, wherein such a screwdriver is used especially in medical technology for screwing implants.
  • the sleeve is first removed from the screwdriver blade and sterilized in these disassembled screwdriver.
  • the sleeve is prepared by screwing the sleeve on a further, the above-mentioned working thread upstream thread for adoption by the doctor performing the operation of a specialist nurse in the surgical service.
  • the screws of the sleeve remains on the working thread
  • the object of the invention is therefore to provide a screwdriver of the type mentioned, its handling in the preparation and implementation of a
  • Screwdriver requiring operation is simplified.
  • the basic idea of the invention is to replace the first thread, which is only required for the preliminary connection of sleeve and screwdriver blade, by a spring, whose radially outward-acting force from the sleeve during insertion
  • a screwdriver for a screw with an inner profile having screw enkopfantrieb having a blade with a blade tip disposed at one end with an insertable into the inner profile of the screw enkopfantrieb s outer profile, and spaced from the blade tip outer threaded portion ; a sleeve receiving the sleeve with a threaded with the arranged on the blade male threaded portion
  • Internally threaded portion and means formed by means disposed on the blade and / or sleeve for effecting jamming of the outer profile of the blade tip in the internal profile of the screw head drive by screwing the sleeve on the blade towards the male threaded portion, one between the male threaded portion and the blade tip of the blade arranged spring element is provided, which extends in the relaxed state on the inner diameter of the male threaded portion and upon sliding of the sleeve on the blade caused by the female threaded portion of the sleeve, radially acting on the spring element force in its radial extent up to a maximum of the inner diameter of the male thread portion is set displaceable, wherein the distance between the male threaded portion and the spring element at least the length of
  • the spring element may be designed to extend parallel to the longitudinal axis of the blade and / or at least partially surround the circumference of the screwdriver blade. In addition, preferably, a plurality of on the circumference of
  • Screwdriver blade arranged spring elements may be provided, which are particularly preferably arranged symmetrically on the circumference of the screwdriver blade.
  • Screwdriver-mediated torque limiting device ie an automatic torque-switching safety clutch (a so-called torque limiter or “torque limiter”) has.
  • Fig. 2 is a sectional detail view of a particularly preferred designed
  • Fig. 1 shows a portion of a particularly preferred trained screwdriver blade according to the invention.
  • the screwdriver blade 10 has at its one (not shown) handle of the
  • Thread portion 12 is disposed adjacent to a predetermined distance is a spring element 14, which extends in its relaxed state shown in Fig. 1 over the radial circumference of the inner diameter of the male threaded portion 12 addition.
  • the spring element 14 has an outwardly directed curved surface and is set up in such a way that a force acting radially on the spring element 14 displaces the spring element 14 in the direction of the axis of the screwdriver blade 10, to such an extent that the spring element 14 maximally extends to the plane the inner diameter of the
  • Externally threaded portion 12 extends radially.
  • FIG. 2 shows a sectional detailed view of a particularly preferred embodiment
  • Screwdriver in a condition prepared for operation.
  • the screwdriver 100 has the illustrated in Fig. 1 screwdriver blade 10, a on the screwdriver blade 10 from the side of the (not shown) blade tip (in the picture from the right) plugged sleeve 20 and (left) a handle, not shown from cut on.
  • the sleeve 20 has an internally threaded portion 22, the inner diameter of which is smaller than the outer diameter of the screwdriver blade 14 provided with the spring element 14.
  • the spring element 14 can happen - both when pushing the sleeve 20 on the blade 10 and when removing the sleeve 20 of the blade 10th
  • the female threaded portion 22 comes to lie in a space between the spring element 14 and the male threaded portion 12 of the screwdriver blade 10.
  • the spring element 14 presses the female threaded portion 22 against the male threaded portion 12, so that the elements immediately after
  • Plugging can be engaged by the surgeon.
  • the distance between the spring element 14 and the male threaded portion 12 of the screwdriver blade 10 is thus interpreted according to the length of the female threaded portion 22 of the sleeve.
  • the elements of the screwdriver 100 can be dimensioned so that the spring element 14 presses the sleeve 20 when pushed onto the blade 10 after passing the spring element 14 by lateral pressure on the female threaded portion 22 to the male threaded portion 12 of the blade 10.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Neurology (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne un tournevis (100) comprenant un élément élastique (14) qui est agencé entre la section à filetage extérieur (12) et la pointe de la lame (10), qui s'étend à l'état détendu sur la totalité du diamètre intérieur de la section à filetage extérieur (10) et qui est conçu pour, lors de l'insertion de la douille (20) sur la lame (10), pouvoir être comprimé dans son étendue radiale au maximum jusqu'au diamètre intérieur de la section à filetage extérieur (12) par une force générée par la section à filetage intérieur (22) de la douille (20), exercée radialement sur l'élément élastique (14). La distance entre la section à filetage extérieur (12) et l'élément élastique (14) correspond au moins à la longueur de la section à filetage intérieur (22) de la douille (20), de sorte que l'élément élastique (14) doit être dépassé par la section à filetage intérieur (22) de la douille (20) lors de l'insertion de la douille (20) sur la lame (10) ou lors du retrait de la douille (20) de la lame (10). 
PCT/DE2017/100268 2016-04-21 2017-04-06 Tournevis WO2017182030A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017002085.9T DE112017002085A5 (de) 2016-04-21 2017-04-06 Schraubendreher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016102114.6 2016-04-21
DE202016102114.6U DE202016102114U1 (de) 2016-04-21 2016-04-21 Schraubendreher

Publications (1)

Publication Number Publication Date
WO2017182030A1 true WO2017182030A1 (fr) 2017-10-26

Family

ID=56364412

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/100268 WO2017182030A1 (fr) 2016-04-21 2017-04-06 Tournevis

Country Status (2)

Country Link
DE (2) DE202016102114U1 (fr)
WO (1) WO2017182030A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3711681A1 (fr) 2019-03-20 2020-09-23 Medizin-Mechanik-Nord GmbH Système de verrouillage pouvant être précontraint

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389913A (en) 1981-03-03 1983-06-28 Gilbert Drouin Screw extractor
DE10042424A1 (de) * 2000-08-30 2002-03-28 Aesculap Ag & Co Kg Schraubendreher für Knochenschrauben
US20050092142A1 (en) * 2003-10-30 2005-05-05 J&M Innovative Products, Llc Split-tip screwdriver with protective sleeve
DE202005019646U1 (de) 2005-07-13 2006-03-16 Witte, Peter Schraubendreher für eine Innenprofilschraube
US20120247284A1 (en) * 2011-03-28 2012-10-04 Synthes Usa, Llc Interlock driving instrument

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389913A (en) 1981-03-03 1983-06-28 Gilbert Drouin Screw extractor
DE10042424A1 (de) * 2000-08-30 2002-03-28 Aesculap Ag & Co Kg Schraubendreher für Knochenschrauben
US20050092142A1 (en) * 2003-10-30 2005-05-05 J&M Innovative Products, Llc Split-tip screwdriver with protective sleeve
DE202005019646U1 (de) 2005-07-13 2006-03-16 Witte, Peter Schraubendreher für eine Innenprofilschraube
WO2007006282A2 (fr) * 2005-07-13 2007-01-18 Peter Witte Tournevis pour vis a profil interieur
US20120247284A1 (en) * 2011-03-28 2012-10-04 Synthes Usa, Llc Interlock driving instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3711681A1 (fr) 2019-03-20 2020-09-23 Medizin-Mechanik-Nord GmbH Système de verrouillage pouvant être précontraint
DE102019107198A1 (de) * 2019-03-20 2020-09-24 Medizin-Mechanik-Nord GmbH Vorspannbares Verriegelungssystem
DE102019107198B4 (de) * 2019-03-20 2021-01-21 Medizin-Mechanik-Nord GmbH Vorspannbares Verriegelungssystem
US11484977B2 (en) 2019-03-20 2022-11-01 Peter Witte Pretensionable locking system

Also Published As

Publication number Publication date
DE202016102114U1 (de) 2016-06-16
DE112017002085A5 (de) 2019-01-10

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