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DE202005011010U1 - Screw driver for inner multi-angled screw has shaft enclosed by sleeve and split at distal end with outer multi-facet head for clamping action as sleeve is turned relative to shaft - Google Patents

Screw driver for inner multi-angled screw has shaft enclosed by sleeve and split at distal end with outer multi-facet head for clamping action as sleeve is turned relative to shaft Download PDF

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Publication number
DE202005011010U1
DE202005011010U1 DE200520011010 DE202005011010U DE202005011010U1 DE 202005011010 U1 DE202005011010 U1 DE 202005011010U1 DE 200520011010 DE200520011010 DE 200520011010 DE 202005011010 U DE202005011010 U DE 202005011010U DE 202005011010 U1 DE202005011010 U1 DE 202005011010U1
Authority
DE
Germany
Prior art keywords
shaft
sleeve
split
polygonal
screw
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.)
Expired - Lifetime
Application number
DE200520011010
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German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE200520011010 priority Critical patent/DE202005011010U1/en
Publication of DE202005011010U1 publication Critical patent/DE202005011010U1/en
Priority to DE202005019646U priority patent/DE202005019646U1/en
Priority to CA2614779A priority patent/CA2614779C/en
Priority to JP2008520709A priority patent/JP5657202B2/en
Priority to EP06775687A priority patent/EP1910034A2/en
Priority to PCT/DE2006/001185 priority patent/WO2007006282A2/en
Priority to US11/988,512 priority patent/US8347768B2/en
Priority to AU2006269089A priority patent/AU2006269089B2/en
Priority to CN2006800253371A priority patent/CN101253025B/en
Priority to US13/735,439 priority patent/US8770068B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/008—Allen-type keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/101—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for hand-driven screw-drivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Surgical Instruments (AREA)
  • Dental Prosthetics (AREA)

Abstract

The screw driver has a sleeve (18) which holds the shaft (10) and screws with same. The distal region of the shaft is formed split in the outer multi-facet head (16) in a plane of symmetry. The two split halves of the shaft have opposite run-up inclines. The sleeve has a run-up ring (22) acting on the inclines so that when the sleeve is turned relative to the shaft the split halves of the shaft are sheared away from each other jamming the internal multi-facet recess (10) with the multi angled head (16). The shaft is split parallel to two planar faces of the multi-angle.

Description

Die Erfindung betrifft einen Schraubendreher für eine Innenmehrkantschraube mit einem Schaft und einem der Innenmehrkantausnehmung der Innenmehrkantschraube entsprechend ausgebildeten Außenmehrkantkopfs, insbesondere zur Verwendung in Zusammenhang mit der chirurgischen Einbringung eines Implantates in den Körper eines Menschen.The The invention relates to a screwdriver for a polygonal screw with a shank and one of the internal polygonal recess of the polygonal screw appropriately designed outer polygonal head, in particular for use in connection with the surgical Insertion of an implant into the body of a human.

Beispielsweise bei der Implantation einer an einem Knochen festzuschraubenden Schiene werden üblicherweise Mehrkantschrauben verwendet, die mit einem Schraubendreher zusammenwirken, dessen Kopf als in die Innenmehrkantausnehmung der Schraube eingreifenden Außenmehrkantkopfs versehen ist. Dabei ist es von Bedeutung, dass die Innenmehrkant schraube vor dem Einschrauben an dem Kopf des Schraubendrehers so geregelt ist, dass diese nicht von diesem abfallen kann.For example during implantation of a screwed to a bone rail become common Polygonal screws used, which interact with a screwdriver whose Head as engaging in the internal polygon recess of the screw Exterior polygon head provided is. It is important that the polygon socket screw before screwing on the head of the screwdriver so regulated is that it can not fall away from this.

Aus der WO 03/106110 A1 ist ein derartiger mit einer Innenkantschraube zusammenwirkender Schraubendreher bekannt, dessen Schaft mit einer Nut versehen ist, über die ein aus dem Außenmehrkantkopf austretendes Sicherungselement gesteuert werden kann. Dieser Schraubendreher ist insofern nachteilig, als er in der Herstellung aufwendig ist und aufgrund seiner relativ komplexen Ausbildung schwer zu sterilisieren ist, was insbesondere bei medizinischen Anwendungen von erheblicher Bedeutung ist.Out WO 03/106110 A1 is such with an inner socket screw cooperating screwdriver known, whose shaft with a groove is over the one from the outer polygonal head emerging fuse element can be controlled. This screwdriver is disadvantageous in that it is expensive to manufacture and difficult to sterilize due to its relatively complex design is, in particular in medical applications of considerable Meaning is.

Der Erfindung liegt damit die Aufgabe zugrunde, einen Schraubendreher zu schaffen, der einfach aufgebaut und herstellbar ist.Of the Invention is therefore the object of a screwdriver to create, which is simple and manufacturable.

Erfindungsgemäß wird diese Aufgabe gelöst durch einen Schraubendreher mit den Merkmalen des Anspruchs 1, die Unteransprüche geben bevorzugte Ausgestaltungen der Erfindung an.According to the invention this Task solved by a screwdriver with the features of claim 1, the dependent claims preferred embodiments of the invention.

Die Erfindung wird im Folgenden gelöst durch einen Schraubendreher mit den Merkmalen des Anspruchs 1 bzw. des Anspruchs 2 , die Unteransprüche geben bevorzugte Ausgestaltungen der Erfindung an.The Invention is solved by a screwdriver with the features of claim 1 and of Claim 2, the dependent claims indicate preferred embodiments of the invention.

Die Erfindung wird im Folgenden anhand einer Zeichnung erläutert. Dabei zeigt:The Invention will be explained below with reference to a drawing. there shows:

1 eine Innenmehrkantschraube sowie das distale Ende eines Schafts mit Außenmehrkantkopf, 1 an internal polygonal screw and the distal end of a shaft with external polygonal head,

2 eine bei Verwendung auf den Schaft aufgeschobener Hülse, und 2 a sleeve pushed on the shaft when in use, and

3 eine 1 entsprechende Darstellung bei einer Verdrehung um 90°. 3 a 1 corresponding representation at a rotation of 90 °.

Der gezeigte Schraubendreher dient zum Halten und Drehen einer Innenmehrkantschraube 10. Der Schraubendreher besteht aus einem Schaft 12 und einem das distale Ende des Schafts 12 bildenden Außenmehrkantkopf 16, der der Innenmehrkantausnehmung 14 der Innenmehrkantschraube 10 komplementär entspricht.The screwdriver shown serves to hold and turn an internal polygonal screw 10 , The screwdriver consists of a shaft 12 and one the distal end of the shaft 12 forming outer polygonal head 16 , the inner polygon recess 14 the inner polygonal screw 10 complementary corresponds.

Auf den Schaft 12 ist eine mit dieser schraubenden Hülse 18 aufgesetzt (in 2 ist die Hülse neben dem Schaft angeordnet dargestellt).On the shaft 12 is one with this screwing sleeve 18 put on (in 2 the sleeve is shown arranged next to the shaft).

Der distale Bereich des Schafts mit dem Außenmehrkantkopf 16 ist in einer Symmetrieebene, die parallel zu zwei Planflächen des Mehrkants liegt, gespalten ausgebildet.The distal area of the stem with the external polygonal head 16 is formed split in a plane of symmetry parallel to two faces of the polygon.

Die beiden gespaltenen Hälften des Schafts 12 sind miteinander gegenüberliegend angeordneten Anlaufschrägen versehen, die Hülse 18 mit einem auf die Anlaufschrägen 20 wirkenden Anlaufring 22 versehen. Bei einem Verdrehen der Hülse relativ zu dem Schaft werden die gespaltenen Hälften des Schafts 12 unter Bewirkung eines Verklemmens der Innenmehrkantausnehmung 10 des Mehrkantkopfs 14 weggeschert. Bei einem Verdrehen der Hülse 18 derart, dass sich der Anlaufring 22 wieder von der Anlaufschräge 20 entfernt, kehren die gespaltenen Hälften des Außenmehrkantkopfs aufgrund der Elastizität des Materials wieder in die Ausgangsposition zurück.The two split halves of the shaft 12 are arranged opposite each other arranged run-on slopes, the sleeve 18 with one on the run-on slopes 20 acting stop ring 22 Mistake. Upon rotation of the sleeve relative to the shaft, the split halves of the shaft become 12 causing jamming of the internal polygon recess 10 of the polygonal head 14 sheared away. When turning the sleeve 18 such that the stop ring 22 again from the run-up slope 20 removed, the split halves of the outer polygon head return due to the elasticity of the material back to the starting position.

Bei einem alternativen Ausführungsbeispiel (nicht gezeigt) ist der distale Bereich des Schafts 12 mit dem Außenmehrkantkopf 16 in entsprechender Weise in einer Symmetrieebene gespalten ausgebildet. Die eine Hälfte des Spaltes ist zu der anderen Hälfte des Spaltes um wenige Winkelgrad (bei fehlender Belastung) verschert. Die beiden Hälften richten sich bei Einführen des gespaltenen Außenmehrkantkopfs in die Innenmehrkantausnehmung der Schraube 10 aus und verklemmen sich mit dieser aufgrund der Elastizität des Materials des Außenmehrkantkopfs.In an alternative embodiment (not shown), the distal portion of the shaft is 12 with the outer polygonal head 16 formed in a corresponding manner split in a plane of symmetry. One half of the gap is deviated to the other half of the gap by a few angular degrees (in the absence of load). The two halves align themselves with insertion of the split outer polygonal head into the internal polygonal recess of the screw 10 from and jam with this due to the elasticity of the material of the outer polygonal head.

Der gespaltene distale Bereich des Schafts kann (nicht gezeigt) gespalten ausgebildet sein.Of the split distal portion of the shaft can split (not shown) be educated.

Claims (4)

Schraubendreher für eine Innenmehrkantschraube (10) mit einem Schaft (12) und einem der Innenmehrkantausnehmung (14) der Innenmehrkantschraube (10) komplementär entsprechend ausgebildeten Außenmehrkantkopf (16), dadurch gekennzeichnet, dass eine den Schaft (10) aufnehmende, mit diesem schraubende Hülse (18) vorgesehen ist, der distale Bereich des Schafts (12) mit dem Außenmehrkantkopfes (16) in einer Symmetrieebene gespalten ausgebildet ist, die beiden gespaltenen Hälften des Schafts (12) mit einander gegenüberliegend angeordneten Anlaufschrägen (20) versehen sind und die Hülse (18) mit einem auf die Anlaufschrägen (20) wirkenden Anlaufring (22) versehen ist; wobei bei einem Verdrehen der Hülse (18) relativ zum Schaft (12) die gespaltenen Hälften des Schafts (12) unter Bewirkung eines Verklemmens der Innenmehrkantausnehmung (10) mit dem Mehrkantkopf (14) von einander weg geschert werden.Screwdriver for a polygonal screw ( 10 ) with a shaft ( 12 ) and one of the internal polygonal recess ( 14 ) of the inner polygonal screw ( 10 ) complementarily shaped outer polygonal head ( 16 ), characterized in that a shaft ( 10 ) receiving, with this screwing sleeve ( 18 ), the distal portion of the shaft ( 12 ) with the outside polygonal head ( 16 ) is split in a plane of symmetry, the two split halves of the shaft ( 12 ) with oppositely arranged run-on slopes ( 20 ) and the sleeve ( 18 ) with one on the run-on slopes ( 20 ) acting stop ring ( 22 ) is provided; wherein upon rotation of the sleeve ( 18 ) relative to the shaft ( 12 ) the split halves of the shaft ( 12 ) causing a jamming of the internal polygonal recess ( 10 ) with the polygonal head ( 14 ) are sheared away from each other. Schraubendreher für eine Innenmehrkantschraube mit den Merkmalen des Oberbegriffs des Anspruchs 1, dadurch gekennzeichnet, dass der distale Bereich des Schafts (12) mit dem Außenmehrkantkopfes (16) in einer Symmetrieebene gespalten ausgebildet ist und die eine Hälfte des Spaltes zu der anderen Hälfte des Spaltes um wenige Winkelgrad bei fehlender Belastung verschert ist und die beiden Hälften sich bei Einführen in den Innenmehrkantausnehmung der Schraube elastisch ausrichten und sich mit diesem Verklemmen.Screwdriver for a polygonal screw with the features of the preamble of claim 1, characterized in that the distal portion of the shaft ( 12 ) with the outer polygonal head ( 16 ) is formed split in a plane of symmetry and the one half of the gap to the other half of the gap by a few angular degrees is forgiven in the absence of load and the two halves align elastically when inserted into the internal polygonal recess of the screw and with this jamming. Schraubendreher nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass der Schaft (10) parallel zu zwei Planflächen des Mehrkants gespalten sind.Screwdriver according to claim 1 or claim 2, characterized in that the shaft ( 10 ) are split parallel to two flat surfaces of the polygon. Schraubendreher nach Anspruch 1, dadurch gekennzeichnet, dass der gespaltete distale Bereich des Schafts (12) austauschbar ist.Screwdriver according to claim 1, characterized in that the split distal region of the shaft ( 12 ) is interchangeable.
DE200520011010 2005-07-13 2005-07-13 Screw driver for inner multi-angled screw has shaft enclosed by sleeve and split at distal end with outer multi-facet head for clamping action as sleeve is turned relative to shaft Expired - Lifetime DE202005011010U1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE200520011010 DE202005011010U1 (en) 2005-07-13 2005-07-13 Screw driver for inner multi-angled screw has shaft enclosed by sleeve and split at distal end with outer multi-facet head for clamping action as sleeve is turned relative to shaft
DE202005019646U DE202005019646U1 (en) 2005-07-13 2005-12-16 Screwdriver for an internal profile screw
CN2006800253371A CN101253025B (en) 2005-07-13 2006-07-08 Screwdriver for an inner profile screw
EP06775687A EP1910034A2 (en) 2005-07-13 2006-07-08 Screwdriver for an inner profile screw
JP2008520709A JP5657202B2 (en) 2005-07-13 2006-07-08 Screwdriver for screws with internal profile
CA2614779A CA2614779C (en) 2005-07-13 2006-07-08 Screwdriver for an inner profile screw
PCT/DE2006/001185 WO2007006282A2 (en) 2005-07-13 2006-07-08 Screwdriver for an inner profile screw
US11/988,512 US8347768B2 (en) 2005-07-13 2006-07-08 Screwdriver for an inner profile screw
AU2006269089A AU2006269089B2 (en) 2005-07-13 2006-07-08 Screwdriver for an inner profile screw
US13/735,439 US8770068B2 (en) 2005-07-13 2013-01-07 Screwdriver for an inner profile screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520011010 DE202005011010U1 (en) 2005-07-13 2005-07-13 Screw driver for inner multi-angled screw has shaft enclosed by sleeve and split at distal end with outer multi-facet head for clamping action as sleeve is turned relative to shaft

Publications (1)

Publication Number Publication Date
DE202005011010U1 true DE202005011010U1 (en) 2005-09-29

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Family Applications (1)

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DE200520011010 Expired - Lifetime DE202005011010U1 (en) 2005-07-13 2005-07-13 Screw driver for inner multi-angled screw has shaft enclosed by sleeve and split at distal end with outer multi-facet head for clamping action as sleeve is turned relative to shaft

Country Status (2)

Country Link
CN (1) CN101253025B (en)
DE (1) DE202005011010U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107242900B (en) * 2017-07-12 2018-12-21 武永刚 Orthopaedics internal fixation screw extractor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779494A (en) * 1987-04-21 1988-10-25 New Concepts Screwdriver having screw gripping feature
CN2080444U (en) * 1990-11-10 1991-07-10 江苏省滨海县石化机械配件厂 Locking type screwdriver
GB2389551B (en) * 2002-06-13 2005-09-21 Martin Philcox Screw driver with holding feature for socket head screws

Also Published As

Publication number Publication date
CN101253025B (en) 2012-03-14
CN101253025A (en) 2008-08-27

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20051103

R150 Term of protection extended to 6 years

Effective date: 20080910

R151 Term of protection extended to 8 years
R151 Term of protection extended to 8 years

Effective date: 20111130

R082 Change of representative

Representative=s name: MAIWALD PATENTANWALTSGESELLSCHAFT MBH, DE

Representative=s name: MAIWALD PATENTANWALTS- UND RECHTSANWALTSGESELL, DE

R152 Term of protection extended to 10 years
R152 Term of protection extended to 10 years

Effective date: 20130819

R071 Expiry of right