Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
  • A61B17/1613—Component parts
  • A61B17/1622—Drill handpieces
  • A61B17/1624—Drive mechanisms therefor
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
  • A61B17/1613—Component parts
  • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
  • A61B17/1617—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material with mobile or detachable parts
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
  • A61B17/1613—Component parts
  • A61B17/162—Chucks or tool parts which are to be held in a chuck
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
  • A61B17/1613—Component parts
  • A61B17/1626—Control means; Display units
• • 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
  • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
  • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
• • 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
  • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
• • 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
  • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
  • B25B23/141—Mechanical overload release couplings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
  • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
  • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
  • B25F5/02—Construction of casings, bodies or handles
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
  • A61B17/1613—Component parts
  • A61B17/1622—Drill handpieces
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
  • A61B2017/00407—Ratchet means

Definitions

• Tool holder for surgical drill with additional manual drive unit and surgical drill
• the invention relates to a tool receiving attachment for a medical, motor-driven machine tool such as surgical
• Drill which may also be referred to as a surgical screwdriver or can be used with a drive-side coupling for attachment to a (electric) motor torque-providing drive / motor, such as a prime mover with an electric motor and with a driven-side clutch / tool receiving chuck for receiving a Tool, such as a screwdriver, a drill or the like turning tools.
• a (electric) motor torque-providing drive / motor such as a prime mover with an electric motor and with a driven-side clutch / tool receiving chuck for receiving a Tool, such as a screwdriver, a drill or the like turning tools.
• bone screws are set in certain surgical procedures, for example.
• So-called pedicle screws which are used in spine surgery.
• a drilling must first be performed in order to then put in the hole drilled in the vertebra each screw.
• the bones / vertebrae to be treated are always brittle. It therefore requires a certain sensitivity to clean the hole clean and nondestructive / d.h. without damaging the vertebral body.
• the last phase of the drilling process and the last phase of the screwing process are critical. Until then, it takes a lot of rotational movement to create the hole and bring the screw deep enough, so that the risk of tearing out of the vertebral bone or over-tightening of the screw increases, especially in the final phase of drilling and screwing.
• Electromotive drive units are often used, ie drive machines with an electric motor, which are either supplied battery / accumulator depending on energy, or access via a cable to an external power supply.
• So-called spine wire feeds are already known, which are attachments for surgical drills which use a lever to perform a specific function. Through the machine a picking wire is guided. When the lever is pulled, the wire is clamped in the machine so that it passes through the
• Screw gun known, namely from US 8 786 233 B2, which belongs to the same family as EP 2 701 879 A1. It discloses an electric ratchet for a powered screwdriver. This known ratchet is constructed such that when a gas trigger is not actuated, the electronic ratchet is activated. On an additional control unit, the user can choose between a left and right-hand rotation, as well as a blocking in both directions.
• the ratchet is electrically designed / activated, which means that in order to ensure the blocking of the ratchet, such a high current flows in the machine that a strong heat development is to complain. Also missing is an acoustic feedback.
• A for example, for performing the drilling in the last
• Thread cutting used mechanical ratchet for example, as it is used in the last phase of the screws, is not present here. Due to the cable connection, the range / freedom of movement is severely limited. Furthermore, this system complains that a closed system is presented and accidental operation of the gas trigger during manual screwing leads to or leads to sudden penetration of the screw leads to a sudden further drilling. However, this is devastating in patient use.
• Screwdriver attachments are also known from other manufacturers, for example the "Synthes drill gun 510.01." An attachment can be placed on this drill gun, which reduces the output speed of the drill gun to approximately 300 rpm this
• Polyaxial screws are, for example, those screws which have a spherical screw head, which is enclosed by a housing, such that the housing is freely adjustable to the longitudinal axis of the screw.
• pedicle screws are formed.
• Pedicle screws / polyaxial screws as well as to be used in plate glands tool holder attachment available that eliminates the disadvantages described above or at least mitigates.
• the invention allows the applicant (surgeon) that a safe mechanical screwing is done. Also, the setting of the engine speed should be selectable so that the user can set the desired speed precisely.
• This task is accomplished by a tool holder with the features of
• the basic idea of the present invention is based on the fact that between the two clutches for connecting a motor to the one input clutch and for receiving / connecting a tool to the other
• Output clutch is a manually operable / handkraftbetätigbare drive unit is integrated in the form of a ratchet, which is by means of ratchet / manual actuator of the ratchet itself in a first operating position, in which the torque is transmitted from the input clutch, bypassing the ratchet function on the output clutch and in a second operating position can be brought, in which the two clutches are torque-separated and instead via the ratchet function of the
• Ratchet handle / manual actuator registered manual torque is transmitted to the output clutch.
• Machine is operated, such as operating the motor, pressing the tool on the bone to be drilled / screw to be screwed on the machine / the machine handle, etc. Also, thus safe operation is possible. Damage to the patient or the doctor is prevented. Precise use becomes possible. Concretely, it may be constructively provided to form the ratchet with two torque-transmitting elements (sleeves), each carrying a counter-acting teeth and depending on the manual selection
• ratchet output element can be alternately switched to function, so as to transmit a right- or left-acting torque transmission from a manual input member such as ratchet housing on a ratchet-output member such as output sleeve.
• a manual input member such as ratchet housing
• a ratchet-output member such as output sleeve.
• Torque transmission elements is a sort of selection member such as selector disc / - sleeve arranged, which can be manually adjusted so that it comes with each one of the torque-transmitting elements in operative engagement. Furthermore, the selection member can be adjusted via the ratchet-output member in its operation by means of the ratchet handle in a ratchet-disfunctional position in which the ratchet can no longer transmit manually introduced torque on the ratchet-output member, but at the same time the ratchet output member in this actuation position the two clutches directly torque-connects.
• selection member such as selector disc / - sleeve arranged, which can be manually adjusted so that it comes with each one of the torque-transmitting elements in operative engagement. Furthermore, the selection member can be adjusted via the ratchet-output member in its operation by means of the ratchet handle in a ratchet-disfunctional position in which the ratchet can no longer transmit manually introduced torque on the
• the ratchet-output member is a sleeve, which is a
• the Input clutch is engageable.
• the ratchet-output element has a kind entrainment such as driving pin or projection which acts on the aforementioned selection member of the ratchet and this takes on an adjustment of the ratchet-output member in the ratchet-disabled position in a position in which an operative engagement between the selection member and the two torque-transmitting elements of the ratchet is excluded. In this case, a torque transmission from the engine to the output clutch is enabled, but the ratchet function overridden.
• the selection component is forced into a position, eg resiliently in FIG it is selectively engageable with one of the two torque transmitting elements. In this case, a torque transmission from the engine to the output clutch is interrupted, but the ratchet function is put into effect.
• the handle can
• lever which is mounted on the housing of the ratchet to rotate it around the output shaft of the tool holder and so to enter a manual torque in the ratchet.
• the lever in
• Ratchet housing be supported and act on its ratchet interior projecting end of the ratchet-output member to move it axially and so set the two above-mentioned positions for a / put out of the ratchet function.
• the torque-generating drive unit (housing) provided with manual power is connected to or integrated with a ratcheting / judging device or a ratchet (inside the housing). Circumferential rotation within a limited working space, e.g. for loosening or tightening screw connections, then becomes efficient
• Ratsche or ratchet are used, for example.
• ratchet or ratchet of the manual drive unit is connected downstream, ie between the manual drive unit and the output-side clutch (Output clutch) is used. In this way, an efficient functioning can be achieved.
• Rataugeheit / Ratsch is designed as a mechanical ratchet.
• Direction selection unit is integrated so that an operation is possible only in electrical operation.
• the manual drive unit is connected to the manually accessible lever.
• the lever can then be configured Z-, N- or S-shaped.
• An advantageous embodiment is also characterized in that the torque limiting device between the drive-side clutch and the Ratsch adopted / Rat unit is arranged.
• the manual drive unit is connected to a disconnect clutch such that in the case of actuation of the manual drive unit, a motor torque transmission to the output-side clutch
• the invention also relates to a surgical drill or a surgical screwdriver with an electric motor, which is connected via the drive-side coupling of the tool receiving attachment according to the invention for torque introduction into this essay.
• the invention thus relates to a tool receiving attachment, in which the user can decide at any time by means of a manual operating mode without having to change the tool, to screw in the screw manually. He receives thereby a more direct feedback about the condition of the bone.
• a freely adjustable torque limiter which is effective only in the electrical mode, helps the user in choosing the right time from which he wants to manually turn. It can also be used as a safety function. Due to the free adjustability, a flexible adaptation to different areas of use is possible. Accidental adjustment is prevented by a locking mechanism.
• surgical drill allows. More specifically, implementation of a manual drive in a surgical drill attachment is achieved. An additional integration of a ratchet function is achieved. A change of the direction of rotation of the ratchet function is provided. A flowing or digital
• Switching between an electrical and manual mode of operation is enabled by a lever.
• the additional combination with a freely adjustable torque limiter which can be locked or infinitely variable, but can also do without a Nm scale, is an advantage.
• the implementation of this function is possible in a single essay.
• the attachment is coupled to the prime mover via the "Plug and Play” coupling, and at the distal end there is another “plug and play” coupling capable of receiving a screwdriving tool.
• the disengagement torque can be adjusted with electric drive. After adjusting the torque, the rotary handle can be locked. To assist the user in the application, the rotary handle can be screened.
• the lever By pulling the lever in the longitudinal direction of the tool receiving shaft, as already indicated above, the user can manually screw screws into the bone over the ratchet.
• the output is thus completely separated from the electric drive (motor), which additionally increases operating safety.
• the manual drive is implemented as an adjustable ratchet.
• the user can switch between left and right rotation.
• actuation is only possible in electrical operating mode.
• emphasis is placed on intuitive operation. Consequently, the implementation example, the front position of the control element corresponds to the clockwise, so the penetration of a screw.
• Fig. 1 is a side view of an inventive
• Fig. 2 shows a surgical drill according to the invention, also as
• Fig. 3 is a longitudinal sectional view through a drill according to the invention.
• FIG. 1 an inventive tool receiving attachment 1 is shown. It is provided for the surgical drill 2 shown in FIG. 2 and coupled there.
• the tool receiving attachment 1 has a drive-side clutch (input clutch) 3 for attaching a
• Drive unit 4 such as engine, engine-gear unit, etc. has.
• the drive-side clutch 3 is designed as a "plug-and-play clutch", ie it is a clutch without reconfiguration or a clutch which is free from a user-dependent readjustment
• Drive-side clutch 3 is present, at the distal end of a driven-side clutch (output clutch) 5 is present.
• the ratchet 7 consists of a housing as the manual drive unit 6, in which two sleeve-shaped torque transmission elements are rotatably received with the housing 6, of which held at least one torque-transmitting element axially displaceable with respect to the other torque-transmitting element is.
• Both torque-transmitting elements preferably have at one end face in each case a toothing to alternately and optionally depending on their relative axial position to each other with an intermediate / selection component in the form of an axially adjacent to the torque transmission elements disc or ring brought into mesh ,
• This relative axial position can be adjusted by means of a manually operable slide.
• the slider is coupled to one of the two torque transmission elements to move it axially.
• the at least one axially displaceable torque transmission element is brought into or out of mesh with the intermediate / selection component.
• the intermediate / selection component is also held axially displaceable and biased by a spring in the direction of the two intermediate / selection components.
• the teeth of the two torque transmission elements act in opposite directions, such that they can transmit a right or left torque and cause a freewheel in the other direction.
• a right-handed or left-acting torque can be transmitted from the manual drive unit 6 via the ratchet.
• the intermediate / selection component is further
• the ratchet-output element preferably has frontally a toothing, via which the ratchet-output element can come into torque-transmitting meshing engagement with an output element of the input-side clutch 3, depending on its axial position with respect to the shaft of the output-side clutch 5, to a torque from the engine to the output side To transfer clutch 5.
• the manual drive unit (housing) 6 is activated and driven by a lever 9.
• the lever 9 is designed in the manner of a crank and adapted to the size of a human hand. That the lever 9 is mounted in the housing 6 such that the housing 6 about this about the central axis of
• Tool holder pivotally mounted, as shown in Fig. 3.
• a protruding into the housing interior lever extension is coupled to the ratchet-output member so that it can be moved by pivoting the lever 9 in the axial direction.
• the ratchet output element has a drive in the form of a radial projection which acts directly or indirectly on the intermediate / selection component of the ratchet to this according to the axial movement of the ratchet-output element, if necessary
• Ratchet function is overridden. If, however, the ratchet output element via the lever 9 axially from the output element of
• the lever 9 receives two functions, namely
• Torque limiting device 10 available. This is manually adjustable, unlocked and locked, for example. Via a rotary handle.
• the rotary handle is provided with the reference numeral 1 1.
• Fig. 2 and Fig. 3 the complete structure of the surgical drill 2 is shown with inserted tool receiving attachment 1. There are two
• Drill 2 can be controlled / regulated.

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• Health & Medical Sciences (AREA)
• Surgery (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Dentistry (AREA)
• Biomedical Technology (AREA)
• Veterinary Medicine (AREA)
• Orthopedic Medicine & Surgery (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Mechanical Engineering (AREA)
• Surgical Instruments (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Manipulator (AREA)

Priority Applications (5)

Applications Claiming Priority (4)

Publications (2)

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• 2015
  • 2015-07-22 DE DE102015111877.7A patent/DE102015111877A1/de not_active Withdrawn
• 2016
  • 2016-07-06 JP JP2018502233A patent/JP2018520793A/ja active Pending
  • 2016-07-06 US US15/744,960 patent/US10702284B2/en active Active
  • 2016-07-06 EP EP16734715.2A patent/EP3324859B1/de active Active
  • 2016-07-06 ES ES16734715T patent/ES2914199T3/es active Active
  • 2016-07-06 WO PCT/EP2016/065988 patent/WO2017012877A2/de not_active Ceased
  • 2016-07-06 CN CN201680043019.1A patent/CN107847235B/zh active Active

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