Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00064—Constructional details of the endoscope body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00163—Optical arrangements
  • A61B1/00188—Optical arrangements with focusing or zooming features
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00002—Operational features of endoscopes
  • A61B1/00057—Operational features of endoscopes provided with means for testing or calibration
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00064—Constructional details of the endoscope body
  • A61B1/00071—Insertion part of the endoscope body
  • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
  • A61B1/00096—Optical elements
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00064—Constructional details of the endoscope body
  • A61B1/0011—Manufacturing of endoscope parts
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00131—Accessories for endoscopes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00147—Holding or positioning arrangements
  • A61B1/00158—Holding or positioning arrangements using magnetic field
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
  • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
  • G02B23/2476—Non-optical details, e.g. housings, mountings, supports
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/18—Mechanical movements
  • Y10T74/18568—Reciprocating or oscillating to or from alternating rotary

Definitions

• the invention relates to an actuator, in particular a bistable actuator, for a surgical instrument, in particular an endoscope, with a sliding tube for receiving a rotor and a rotor arranged in the sliding tube. Furthermore, the invention relates to a rotor positioning key for a rotor of a, in particular bistable, actuator.
• an endoscope with a distally disposed lens is known, the image of which passes an image relay to the proximal end and which has at least one optical element such as a lens group, in the direction of the optical axis for focusing and / or changing the focal length is displaceable by a micro-drive, wherein the micro-drive comprises at least one rotationally symmetrical axially movable sleeve which surrounds and receives the lenses or the optical element of the movable lens group, and wherein the sleeve consists of a permanently magnetic material, and in a magnetic field
• CONFIRMATION COPY is movable, which is generated by a coil assembly. To move and hold the sleeve, an electromagnetic field is constantly generated.
• an endoscope with a distally radiating illumination device for a body cavity part to be observed and an image guide is known, from which the illuminated image is recorded via an axially adjustable objective and fed to an eyepiece or a camera, the objective for at least two image sharpness settings by electromagnetic influencing a serving as an anchor lens mount from one position to another position relative to the distal end of an image guide is adjustable.
• the two positions is caused by a permanently applied electromagnetic field and the other position by the action of a spring.
• DE 10 2011 006 814 A1 describes an electromagnetic actuator for a surgical or medical instrument, in particular an endoscope.
• the object of the invention is to improve the handling of an actuator for a surgical instrument in a simple manner.
• an actuator in particular bistable actuator, for a surgical instrument, in particular endoscope, with a sliding tube for receiving a rotor and a runner arranged in the sliding tube, which is further developed in that the sliding tube at one end a receiving cavity for a runner positioning key , wherein the receiving cavity is designed such that after positioning of the rotor position n ists sayls in the receiving cavity and after a rotation of the rotor positioning key in the receiving cavity of the rotor positioning key is releasably fixed.
• the invention is based on the idea that using a rotor positioning key, which can be arranged in the receiving cavity of the sliding tube, the stroke of a rotor in the sliding tube of the actuator can be adjusted in a simple manner, since in cooperation of the receiving cavity with the rotor positioning key, the rotor positioning key at the end is held by the sliding tube, wherein the stroke of the rotor is determined by the thickness of the key head of the rotor positioning key.
• a fixed spacer element is provided when adjusting the travel of the rotor.
• the pivoting gate has a function of a rotary guide device for the rotor positioning key.
• the electromagnetic actuator has a stator and a displaceable rotor.
• the rotor is inside a sliding tube.
• the runner himself points in one embodiment. at least partially a paramagnetic and / or ferromagnetic material, wherein the rotor can be displaced from a first position to a second position by application of an electromagnetic field.
• the rotor is held in a first position by a permanent magnetic field and held by moving to a second position in the second position by a permanent magnetic field.
• an embodiment of the actuator is characterized in that the receiving cavity has a stop for the rotor positioning key.
• the receiving cavity of the sliding tube is complementary in shape and / or functionally matched to the contour of a key head of the rotor positioning key.
• the receiving cavity has a non-round and / or star-shaped, in particular polygonal or polygonal, cross-sectional contour.
• the rotor positioning key In cooperation of the rotation of the slider slide and the rotor positioning key, which is arranged and rotated in the receiving cavity of the sliding tube, and due to the shape and functionally complementary design of the receiving cavity and cooperating with the receiving cavity key head of the rotor positioning key is provided in a simple manner as a stop position, an end position of the rotor in the sliding tube.
• the rotor positioning key is rotated about its axis in the designated rotational backdrop after placement in the receiving cavity, whereby due to the cantilevered shape of the key head, the key head of the rotor positioning key at a defined distance between the stop in the sliding tube and the end surface of the rotor positioning key for adjusting the stroke length of the Rotor is fixed in the sliding tube.
• the rotor in the sliding tube After insertion and rotation of the rotor positioning key the rotor in the sliding tube, possibly together with a stopper or the like, in the sliding tube, with force against the abutment surface of the fixed key head, which faces the rotor pressed.
• a stopper with the sliding tube e.g. connected or joined by a gluing process or the like.
• the rotor positioning key is rotated back in the receiving cavity in the rotating backdrop and removed from the receiving cavity, so that space for the stroke of the rotor in the sliding tube is created.
• a runner positioning key for a runner of a, in particular bistable, actuator of a surgical instrument, in particular an endoscope, wherein the runner positioning key is releasably fixable in a sliding tube of the actuator and in a rotating link, in particular the receiving cavity, rotatable.
• the sliding tube of the actuator is designed as described above.
• the runner positioning key preferably has an end widened key head for placement and insertion into the receiving cavity of the slide tube or in the provided for the rotor positioning key rotation and a key shank for rotating the runner positioning key, preferably in the rotating backdrop on.
• the key head of the runner positioning key is non-round and / or star-shaped, in particular polygonal-like.
• FIG. 3 schematically shows a perspective view of a rotor positioning key according to the invention in a perspective view
• Fig. 4 is a plan view of an N side of the sliding tube with rotor positioning key disposed therein.
• Fig. 1 shows a schematic sectional view through a part of an endoscope with an actuator.
• the actuator may be arranged in a shaft, not shown, of an endoscope.
• the shaft of the endoscope would be arranged in Fig. 1 around the actuator, with a diameter which is slightly larger than the outer diameter of the distal end 18 of the sliding tube eleventh
• the sliding tube 1 which may be made of a metal or plastic, in which case it is important that this consists of non-magnetic materials, serves as a guide of the axially displaceable rotor 10.
• the slider 10 formed as a movable element may for example have a lens 13, which is part of a lens which also has lenses 14 and 15 which are incorporated in a fixed holding member 12 and are held accordingly.
• the fixed holding member 12 is fixed in the sliding tube 1 1 and defines a stop 16.
• the further stop 17 to the distal end is also defined by the sliding tube 1 1 by a collar inside.
• FIG. 1 is a rotationally symmetrical structure in which an axially displaceable rotor 10 is provided.
• the axially displaceable rotor 10 can be moved from a proximal position in Fig. 1 to the left to the stop 17 in a distal position.
• the displaceable element 10 is formed as a type of sleeve, in particular made of a soft magnetic material, such as e.g. a ferromagnetic material, or has this material.
• the slidable rotor 10 may still have a friction-reducing coating on the surface, which is arranged to the inner wall of the sliding tube 1 1.
• the runner 10 which is axially displaceable in the sliding tube 1 1, has a distal pole piece and a proximal pole shoe, which cooperate with the magnetic field of the permanent magnets 20 and 21, which are formed as rings and are arranged rotationally symmetrically about the longitudinal axis of the electromagnetic actuator.
• a first intermediate part 22 and a second intermediate part 23 of paramagnetic or ferromagnetic material are provided, which are also formed with pole shoes or as pole pieces.
• the first intermediate part 22 and the second intermediate part 23 can also be in one piece, thus forming a single intermediate part.
• a coil 24 is provided, which is surrounded to the outside by the first intermediate part 22 and the second intermediate part 23 and is surrounded inwardly to the interruption by the sliding tube 1 1 of paramagnetic and / or ferromagnetic material of the movable rotor 10.
• the stator 19 of the electromagnetic actuator essentially consists of the two permanent magnet rings 20 and 21, the two intermediate parts 22 and 23 and the coil 24.
• Fig. 2 shows schematically in a perspective view of an end portion of the sliding tube 1 1, wherein the sliding tube 1 1 at the illustrated end has a receiving cavity 30.
• the receiving cavity 30 has a non-round shaped inner contour as a rotational backdrop, wherein the receiving cavity 30 cooperates with the contour of a rotor positioning key.
• the receiving cavity 30 has for this purpose on its circumference recesses 32 and undercuts 34 for the rotary gate, which are arranged at regular intervals in the circumferential direction of the sliding tube 1 1.
• the undercuts 34 form after insertion of a Läuferposition réelles slaughterls in the receiving cavity 30 rear stops or outside stops for the rotor positioning key.
• the circumferentially alternately arranged recesses 32 and undercuts 34 are arranged uniformly in the circumferential direction. In one embodiment, the recesses 32 and the undercuts 34 may be arranged irregularly in the circumferential direction.
• Fig. 3 is a schematic representation of a perspective view of a rotor positioning key 40 for the rotational backdrop of the receiving cavity is shown.
• the runner positioning key 40 has a rotatable shaft 42, at the end of a widened key head 44 is arranged.
• the key head 44 is star-shaped or star-shaped.
• the insertable into the receiving cavity key head 44 has a thickness d, which corresponds to the adjustment of a rotor in the sliding tube 1 1 the stroke length of the rotor in the sliding tube 1 1.
• the rotor positioning key 40 is inserted in the receiving cavity 30, wherein after the rotor positioning key 40 is arranged in the receiving cavity 30, the rotor positioning key 40 is rotated.
• the rotor positioning key 40 is releasably fixed to adjust the stroke length of a rotor inside the slider tube 1 1.
• the key head 44 has a non-circular outer contour, wherein the outer contour of the key head 44 is formed star-shaped, wherein the shape of the key head 44 is complementary to the shape of the recess 32 and the undercuts 34 of the receiving cavity 30 and the rotational backdrop of the receiving cavity formed.
• the runner and a stopper arranged in the sliding tube 44 are then pressed with force against the outer contact surface of the key head 44 facing the runner, so that subsequently the stopper is connected to the sliding tube, for example by gluing. Thereafter, the runner positioning key 40 becomes turned back and removed from the receiving cavity 30. This results in between the rotor and the open or open end of the sliding tube 1 1 space for the stroke of the rotor in the interior of the sliding tube 1 first
• Fig. 4 is a schematic side view of the arrangement of the key head 44 in the receiving cavity 30 in the rotated state or fixed state of the rotor positioning key 40 is shown.
• the tongue-like projections of the key head 34 are arranged behind the undercuts 34 of the receiving cavity 30.
• the receiving cavity 30 has three contact points or support points for the rotor positioning key 40.
• a stop plane or contact plane for the key head 44 is provided using the three support points.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Optics & Photonics (AREA)
• Biomedical Technology (AREA)
• General Health & Medical Sciences (AREA)
• Veterinary Medicine (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Public Health (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• Radiology & Medical Imaging (AREA)
• Biophysics (AREA)
• Pathology (AREA)
• Astronomy & Astrophysics (AREA)
• General Physics & Mathematics (AREA)
• Manufacturing & Machinery (AREA)
• Endoscopes (AREA)
• Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

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Citations (5)

Family Cites Families (24)

• 2012
  • 2012-10-23 DE DE102012219354.5A patent/DE102012219354A1/de not_active Withdrawn
• 2013
  • 2013-10-07 WO PCT/EP2013/003006 patent/WO2014063782A1/de not_active Ceased
  • 2013-10-07 CN CN201380055193.4A patent/CN104736039B/zh not_active Expired - Fee Related
  • 2013-10-07 JP JP2015538320A patent/JP6246820B2/ja not_active Expired - Fee Related
• 2015
  • 2015-04-23 US US14/694,488 patent/US10285572B2/en not_active Expired - Fee Related

Patent Citations (5)

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