WO2017182030A1 - Screwdriver - Google Patents
Screwdriver Download PDFInfo
- 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
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)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (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
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112017002085.9T DE112017002085A5 (en) | 2016-04-21 | 2017-04-06 | screwdriver |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202016102114.6U DE202016102114U1 (en) | 2016-04-21 | 2016-04-21 | screwdriver |
DE202016102114.6 | 2016-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017182030A1 true WO2017182030A1 (en) | 2017-10-26 |
Family
ID=56364412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2017/100268 WO2017182030A1 (en) | 2016-04-21 | 2017-04-06 | Screwdriver |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE202016102114U1 (en) |
WO (1) | WO2017182030A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3711681A1 (en) | 2019-03-20 | 2020-09-23 | Medizin-Mechanik-Nord GmbH | Pretensionable locking system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389913A (en) | 1981-03-03 | 1983-06-28 | Gilbert Drouin | Screw extractor |
DE10042424A1 (en) * | 2000-08-30 | 2002-03-28 | Aesculap Ag & Co Kg | Screw-driver has handle containing expander element with slide surface near shaft's free end, and side-opening groove |
US20050092142A1 (en) * | 2003-10-30 | 2005-05-05 | J&M Innovative Products, Llc | Split-tip screwdriver with protective sleeve |
DE202005019646U1 (en) | 2005-07-13 | 2006-03-16 | Witte, Peter | Screwdriver for an internal profile screw |
US20120247284A1 (en) * | 2011-03-28 | 2012-10-04 | Synthes Usa, Llc | Interlock driving instrument |
-
2016
- 2016-04-21 DE DE202016102114.6U patent/DE202016102114U1/en not_active Expired - Lifetime
-
2017
- 2017-04-06 DE DE112017002085.9T patent/DE112017002085A5/en active Pending
- 2017-04-06 WO PCT/DE2017/100268 patent/WO2017182030A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389913A (en) | 1981-03-03 | 1983-06-28 | Gilbert Drouin | Screw extractor |
DE10042424A1 (en) * | 2000-08-30 | 2002-03-28 | Aesculap Ag & Co Kg | Screw-driver has handle containing expander element with slide surface near shaft's free end, and side-opening groove |
US20050092142A1 (en) * | 2003-10-30 | 2005-05-05 | J&M Innovative Products, Llc | Split-tip screwdriver with protective sleeve |
DE202005019646U1 (en) | 2005-07-13 | 2006-03-16 | Witte, Peter | Screwdriver for an internal profile screw |
WO2007006282A2 (en) * | 2005-07-13 | 2007-01-18 | Peter Witte | Screwdriver for an inner profile screw |
US20120247284A1 (en) * | 2011-03-28 | 2012-10-04 | Synthes Usa, Llc | Interlock driving instrument |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3711681A1 (en) | 2019-03-20 | 2020-09-23 | Medizin-Mechanik-Nord GmbH | Pretensionable locking system |
DE102019107198A1 (en) * | 2019-03-20 | 2020-09-24 | Medizin-Mechanik-Nord GmbH | Pre-tensionable locking system |
DE102019107198B4 (en) * | 2019-03-20 | 2021-01-21 | Medizin-Mechanik-Nord GmbH | Pre-tensionable locking system |
US11484977B2 (en) | 2019-03-20 | 2022-11-01 | Peter Witte | Pretensionable locking system |
Also Published As
Publication number | Publication date |
---|---|
DE202016102114U1 (en) | 2016-06-16 |
DE112017002085A5 (en) | 2019-01-10 |
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