RU2015151332A - COMBINED EXTRACTOR FOR DAMAGED BONE SCREWS - Google Patents

COMBINED EXTRACTOR FOR DAMAGED BONE SCREWS Download PDF

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Publication number
RU2015151332A
RU2015151332A RU2015151332A RU2015151332A RU2015151332A RU 2015151332 A RU2015151332 A RU 2015151332A RU 2015151332 A RU2015151332 A RU 2015151332A RU 2015151332 A RU2015151332 A RU 2015151332A RU 2015151332 A RU2015151332 A RU 2015151332A
Authority
RU
Russia
Prior art keywords
conical
sectional shape
cross
handle
working head
Prior art date
Application number
RU2015151332A
Other languages
Russian (ru)
Other versions
RU2642382C2 (en
Inventor
Евгений Валентинович Пашков
Михаил Иванович Калинин
Владимир Иванович Пахалюк
Николай Анатольевич Лозинский
Original Assignee
Федеральное государственное автономное образовательное учреждение высшего образования "Севастопольский государственный университет"
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 Федеральное государственное автономное образовательное учреждение высшего образования "Севастопольский государственный университет" filed Critical Федеральное государственное автономное образовательное учреждение высшего образования "Севастопольский государственный университет"
Priority to RU2015151332A priority Critical patent/RU2642382C2/en
Publication of RU2015151332A publication Critical patent/RU2015151332A/en
Application granted granted Critical
Publication of RU2642382C2 publication Critical patent/RU2642382C2/en

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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
    • A61B17/8872—Instruments for putting said fixation devices against or away from the bone
    • 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
    • A61B17/8891—Screwdrivers, spanners or wrenches holding the screw head at its periphery
    • 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
    • A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/44—Spanners; Wrenches of the chuck type

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (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)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Claims (1)

Комбинированный экстрактор для поврежденных костных шурупов, содержащий размещенные осесимметрично и последовательно соединенные между собой рукоятку для создания крутящего момента, стержневой переходник и рабочую головку в виде чашки с открытой наружу полостью конической формы, поверхность которой снабжена винтообразными выступами с конической формой поперечного сечения, образующими внутреннюю многозаходную резьбу с большим шагом, отличающийся тем, что в головке со стороны конической полости выполнены на одинаковых угловых расстояниях друг от друга и от винтообразных выступов радиальные пазы, в которых размещены с возможностью перемещения в осевом направлении фигурные пластины, установленные в радиальных пазах на конце цилиндрического стержня, размещенного в центральных отверстиях рабочей головки и трубчатого переходника, прикрепленного другим концом с помощью упругого гофрированного цилиндра (сильфона) к рукоятке и являющегося якорем электромагнита (соленоида) переменного тока, статор которого закреплен на фланце трубчатого переходника и содержит радиальные цилиндрические шпонки, образующие байонетное соединение с фигурными прорезами в цилиндрическом воротничке рукоятки, охватывающем по наружной образующей статор электромагнита, причем обращенные внутрь конической полости рабочей головки стороны фигурных пластин имеют угол наклона, равный углу наклона конической поверхности полости и снабжены режущими элементами в виде зубьев, аналогичных зубьям наружной однорядной шлицевой протяжки, форма поперечного сечения которых соответствует форме поперечного сечения винтообразных выступов.Combined extractor for damaged bone screws, containing an axisymmetrically arranged and serially connected handle for creating torque, a rod adapter and a working head in the form of a cup with a conical cavity open to the outside, the surface of which is provided with helical protrusions with a conical cross-sectional shape, forming an internal multi-pass thread with a large step, characterized in that in the head from the side of the conical cavity are made at the same angular races radial grooves from each other and from helical protrusions, in which curly plates are placed with the possibility of axial movement, mounted in radial grooves at the end of a cylindrical rod placed in the central holes of the working head and a tubular adapter attached to the other end by means of an elastic corrugated cylinder (bellows) to the handle and which is an anchor of an electromagnet (solenoid) of alternating current, the stator of which is fixed to the flange of the tubular adapter and contains a radial cylindrical dowels, forming a bayonet connection with figured slots in the cylindrical collar of the handle, covering the electromagnet stator along the outer forming stator, and the sides of the shaped plates facing the conical cavity of the working head have an angle of inclination equal to the angle of inclination of the conical surface of the cavity and are equipped with cutting elements in the form of teeth, similar to the teeth of the outer single-row spline broach, the cross-sectional shape of which corresponds to the cross-sectional shape of helical protrusions s.
RU2015151332A 2015-11-30 2015-11-30 Combined extractor for damaged bone screws RU2642382C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2015151332A RU2642382C2 (en) 2015-11-30 2015-11-30 Combined extractor for damaged bone screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2015151332A RU2642382C2 (en) 2015-11-30 2015-11-30 Combined extractor for damaged bone screws

Publications (2)

Publication Number Publication Date
RU2015151332A true RU2015151332A (en) 2017-06-05
RU2642382C2 RU2642382C2 (en) 2018-01-24

Family

ID=59031678

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2015151332A RU2642382C2 (en) 2015-11-30 2015-11-30 Combined extractor for damaged bone screws

Country Status (1)

Country Link
RU (1) RU2642382C2 (en)

Family Cites Families (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
WO1999056662A2 (en) * 1998-05-06 1999-11-11 Isola Implants, Inc. Broken bone screw extractor and method for extracting broken screws
RU2157132C1 (en) * 1999-07-13 2000-10-10 Кемеровская городская клиническая больница N 3 им.М.А. Подгорбунского Gear to set and remove bolt
RU2185798C2 (en) * 2000-07-26 2002-07-27 Научно-исследовательский центр Татарстана "Восстановительная травматология и ортопедия" Device for performing bone screw extraction
US20040158257A1 (en) * 2003-02-12 2004-08-12 Bonati Alfred O. Extractor tube for removing orthopaedic hardware
UA98224C2 (en) * 2010-11-01 2012-04-25 Севастопольский Национальный Технический Университет Extractor for threaded fragments of transpedicular screws

Also Published As

Publication number Publication date
RU2642382C2 (en) 2018-01-24

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Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20171225