WO2017162809A1 - Instrument, en particulier instrument chirurgical - Google Patents

Instrument, en particulier instrument chirurgical Download PDF

Info

Publication number
WO2017162809A1
WO2017162809A1 PCT/EP2017/056961 EP2017056961W WO2017162809A1 WO 2017162809 A1 WO2017162809 A1 WO 2017162809A1 EP 2017056961 W EP2017056961 W EP 2017056961W WO 2017162809 A1 WO2017162809 A1 WO 2017162809A1
Authority
WO
WIPO (PCT)
Prior art keywords
force
instrument
lever arm
pivot point
lever
Prior art date
Application number
PCT/EP2017/056961
Other languages
German (de)
English (en)
Inventor
Bernhard Spitznagel
Original Assignee
Karl Klappenecker Gmbh & Co.Kg
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 Karl Klappenecker Gmbh & Co.Kg filed Critical Karl Klappenecker Gmbh & Co.Kg
Publication of WO2017162809A1 publication Critical patent/WO2017162809A1/fr

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
    • A61B17/8863—Apparatus for shaping or cutting osteosynthesis equipment by medical personnel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06—Joints
    • B25B7/10—Joints with adjustable fulcrum
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B17/00—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact
    • B26B17/02—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact with jaws operated indirectly by the handles, e.g. through cams or toggle levers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2947—Pivots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/02—Hand-operated metal-shearing devices
    • B23D29/023—Hand-operated metal-shearing devices for cutting wires

Definitions

  • the invention relates to an instrument, in particular a surgical instrument, according to the preamble of claim 1.
  • GB 139 528 A discloses a pair of pliers.
  • the pliers include a handle portion and a pressure lever, wherein the pressure lever is pivotally connected via a pin to the handle portion.
  • the pliers further include a lever which is also pivotally fixed to the handle.
  • Corresponding sections of handle and lever form the Mouth of the forceps.
  • the pressure lever works with the lever to close the jaw.
  • WO 2014 195 295 A1 likewise discloses a pair of pliers having a gripping part and a pressure lever which is pivotably mounted relative to the gripping part. Furthermore, a mouth is disclosed consisting of two jaw parts. The first jaw part is provided here on the handle part. The second jaw part, however, is arranged on a lever arm, which can be acted upon by the pressure lever with pressure.
  • a pair of pliers according to WO 2014 195 295 A1 is simple in construction and easy to handle. At the same time it allows a high translation or power transmission.
  • the arrangement of pressure lever, handle part and lever arm makes it possible to transmit a high force on the jaws on a workpiece to be machined.
  • the transmission of force in a pair of pliers according to WO 2014 195 295 A1 takes place largely loss-free, in particular without friction losses. This is made possible by eliminating fixed connections inside the pliers.
  • the forceps according to WO 2014 195 295 A1 can be used in particular in the field of surgery and has already proven itself in this area. However, there are limits to your application. This applies in particular if it is used for cutting or bending implants or the like, in particular if the implants have a large diameter and / or are made of a hard material. Object of the invention
  • the object of the present invention is to provide an instrument, in particular a surgical instrument, which is simple in construction and can be operated with one hand and which converts the force of the human hand into the greatest possible force, which is transmitted to a workpiece to be machined by means of the jaw part can.
  • the instrument comprises a grip part and a pressure lever, wherein the pressure lever is movably mounted relative to the grip part.
  • an instrument according to the present invention is a surgical instrument which is used for example for bending, embossing, punching or cutting. This may be thought of, for example, surgical forceps, scissors, clamps or the like. As will be shown below, can also be thought of spreading instruments.
  • the pressure lever and the handle part preferably have gripping surfaces. Such gripping surfaces include, for example notches, which are modeled on the anatomy of human fingers, so that pressure lever and handle are easy and safe to use. It may also be intended to provide rings for receiving fingers.
  • the instrument further comprises a lever arm which is movably mounted relative to the handle part about a pivot point or pivot point is.
  • the bearing between the pressure lever and the handle part does not have to be identical to the bearing between the lever arm and the handle part.
  • the relative to each other movably mounted instrument components are preferably rotatably or pivotally mounted.
  • a movement performed by at least one of the instrument components during the intended use is thus preferably carried out as a rotary or pivoting movement.
  • this movement is about a pivot or pivot point as a fixed or substantially fixed pivot point.
  • the instrument thus comprises a pressure lever, which is rotatably or pivotally mounted relative to the handle part about a pivot point or pivot point.
  • the instrument comprises a lever arm, which is mounted so as to be rotatable or pivotable relative to the handle part about a pivot point or pivot point.
  • Each of the instrument components movably mounted relative to each other preferably includes a portion or means that may cooperate with a device or portion on the corresponding instrument component. These sections or devices determine the movements that the instrument components may perform relative to each other when used as intended.
  • portions of the instrument components interact with each other in such a way that Pressure lever and / or lever arm are movably mounted relative to the handle part, without the instrument components for this have additional facilities.
  • the handle part a guide or a guide device is formed, which only allows certain movements of the instrument components relative to each other in the assembled state.
  • a guide device may be a limitation, a backdrop, a rail or the like.
  • the handle part may comprise a housing in which the guide means are arranged.
  • cooperating sections and devices of the instrument components, which determine the relative movements are arranged within the housing.
  • the sections or devices reversibly interconnect the instrument components.
  • corresponding sections or devices are the parts of a joint, so for example, joint socket and condyle in question.
  • a joint for example a pivot joint, a hinge or the like
  • a bolt, a rivet, a pin, a screw or another guide element can be used as the pivot point or axis of rotation.
  • it can be thought of a combination of bolts or pins and corresponding receptacle or corresponding guide.
  • a corresponding sections or devices are also a concave recording and a complementary, so for example, convex designed counterpart into consideration. Recording and counterpart are not firmly connected to each other, ie there is no bolt, pin, rivet or the like.
  • a pivot point is usually present, which is substantially the fulcrum of a Torsion corresponds, ie essentially remains in the same place and only rotates in a relative movement of the instrument components.
  • the corresponding sections are not determined by a bolt, rivet or pin in the pivot point to each other, but by the arrangement of all parts of the instrument in the assembled state.
  • the instrument components may additionally be limited by limiting elements in your freedom of movement and / or your degrees of freedom of movement.
  • the pivot point is thus understood, for example, as a point corresponding to the pivot point of a joint in a joint-like arrangement.
  • the relatively movably mounted instrument components are reversible, i. detachable, interconnected. But it can also be thought of a permanent connection.
  • a joint socket encloses a joint head such that both can not separate.
  • a hinge whose components can not be separated.
  • a portion of the grip part is formed as a first jaw part and a portion of the lever arm is formed as a second jaw part.
  • Jaw parts are well known from the prior art, all known jaw parts and all combinations of two jaw parts are used in an instrument according to the present invention.
  • the mouth comprises two relatively movable parts or sections, which are selected according to the intended use of the instrument.
  • both parts are corresponding, ie
  • jaws serve to grip, hold or manipulate tissue, organs or parts thereof, sutures, stents, implants, cables, electrodes or other materials such as molding, bending, embossing, cutting or the like ,
  • both jaw parts are identical and / or complementary.
  • it may be thought of as having two cutting or shear surfaces which together form a cutting tool, such as a surgical scissors.
  • a jaw part may also be a section of the grip part or of the lever arm which can receive a cutting or shear surface in order to form a ready-to-use jaw part.
  • Such an arrangement has the advantage that the same instrument can be used for different purposes. For example, the same instrument, depending on the choice of tool halves, serve either as a pair of scissors or pliers.
  • the instrument is arranged such that the pressure lever acts on the lever arm with force when the pressure lever is moved relative to the handle part in order to move the second jaw part relative to the first jaw part.
  • the lever arm is acted upon by the pressure lever when the pressure lever moves to the lever arm, in particular by pivoting or rotating, for example by squeezing the handle part and pressure lever in the human hand.
  • the pressure lever transmits the force exerted on it directly to the lever arm when it moves towards the handle part by both parts touching each other during the movement at least temporarily.
  • the pressure lever indirectly transmits force to the lever arm, for example by immediately transmitting force to another element, which in turn transmits force directly to the lever arm. In such a case, the pressure lever indirectly transmits force to the lever arm.
  • the jaw parts move towards one another when the grip part and pressure lever are compressed.
  • the instrument is a spreader or the like, then the jaw parts move away from each other when the grip part and pressure lever are compressed.
  • the instrument further comprises means for displacing the pivot point, which is adapted to displace the pivot point of the lever arm.
  • the handle part comprises a guide, in which the lever arm is releasably secured by a pin or bolt and thus stored.
  • the leadership in this case allows both the rotational or pivotal movement of the lever arm and a movement to be performed for the displacement of the pivot point or pivot point.
  • the means for displacing the pivot point determines the position of a pin-side portion of the lever arm within the guide.
  • the device for shifting the rotational or pivot point may be a substantially wedge-shaped slide. This slider can infinitely adjust the rotation or pivot point. However, steps may also be provided on the slide, which permit only discrete positions of the slide relative to the pin or pin, so that the rotation or pivot point can be moved into predetermined positions.
  • the means for shifting the center of gravity or be a wedge-shaped slide, which itself has a guide within which the rotary or pivot point is mounted.
  • the slider is movable in this case only in one direction relative to the handle part.
  • the displacement of the pivot point of the lever arm affects the kinematics of the instrument.
  • an opening width of the mouth ie a spacing of the jaw parts from one another, is influenced.
  • a spreader the distance between the jaws is changed accordingly.
  • the instrument is substantially configured as described in WO 2014 195 295 A1 under "Problem solving" on pages 3 to 9, but with small Modifications as described below.
  • the instrument is configured substantially as described in WO 2014 195 295 A1 on pages 10 to 16, but with small modifications as described below.
  • the device for shifting the pivot or pivot point may be a slide, in particular a step valve.
  • the device for displacing the pivot or pivot point can be subjected to force in the direction of the mouth, for example by a force storage element, in particular by a spring strand.
  • the means for translating the pivot point may be reciprocable between a retracted position and an advanced position.
  • the force of the power storage element is adapted to move the means for moving the pivot point to the advanced position.
  • the handle part may comprise a guide for guiding the lever arm, which may cooperate with a guide element, which is in operative connection with the lever arm, wherein the guide element can be brought into at least one raised and at least one lowered position within the guide.
  • the guide element may be a bolt, a pin, an undercut or the like.
  • the means for displacing the pivot point may transmit the force provided by the force storage element to the lever arm such that the guide element is brought into the raised position. This is preferably done by moving the means for moving the pivot point to the advanced position. It may be provided a biasing means which biases the lever arm in the direction of the pressure lever.
  • Such biasing means may be arranged to apply a force to the lever arm such that the second jaw member moves away from the first jaw member, and the guide member is acted upon by a force acting toward the lowered position.
  • Such a biasing device may be, for example, a leaf spring.
  • the biasing means may be configured to simultaneously bias the journal-side portion of the lever arm within the guide toward the means for translating the pivot point.
  • the force provided by the force storage element results in a force acting on the guide element
  • the force transmitted by the biasing means such as the leaf spring
  • the force provided by the force storage element, resulting in a force acting on the guide member may outweigh the force transmitted from the biasing means to the guide member.
  • the instrument may further be provided with a locking means to lock the means for moving the pivot point. Preferably, this locking takes place in the retracted position.
  • Figure 1 a pair of pliers 1 according to an embodiment of the present invention with closed housing cover 8; in Figures 2 to 5 are each a partially sectioned side view of the forceps 1 of Figure 1 with retracted stage slide 21; in the figures 5 to 7 are each a partially sectioned side view of the pliers 1 of Figure 1 with advanced stepped slide 21; in the figures 8 to 16 individual components of the forceps 1 according to the figures 1 to 7, respectively in side view and plan view.
  • Figure 1 shows the pliers 1 with mounted housing cover 8.
  • the housing cover 8 is connected to mounting portions with the handle part 2, for example via screws or the like.
  • a pressure lever 3 and a handle part 2 can be seen, as well as an actuating element 26 of the step valve 21st
  • the pressure lever 3 and the handle part 2 gripping surfaces 37 are formed.
  • first jaw part 7.1 and a second jaw part 7.2 can be seen, which are each equipped with a tool element 16.1, 16.2.
  • Figure 1 shows the pliers 1 in the closed state, the jaw parts 7.1, 7.2 are also approximated to each other we the pressure lever 3 and the handle part. 2
  • the jaws 7.1, 7.2 and the gripping surfaces 37 are substantially opposite each other. If there is talk of the mouth side or the handle side, the direction along a longitudinal axis L to the jaw parts 7.1, 7.2 or the grip surfaces 37 is always essentially meant.
  • Figure 2 shows the pliers 1 in the open state, the jaws 7.1, 7.2 are removed from each other and the mouth thus opened. Furthermore, the pressure lever 3 is removed from the grip part 2.
  • the step slider 21 is in the retracted state, the actuator 26 is located within the recess 24 at the griff gloveem end.
  • Figure 2 numerous details of the pliers 1 can be seen. These will be explained below with reference to FIGS. 8 to 16.
  • the pressure lever 3 on the mouth side, a driver 35 and a convex counterpart 36 are integrally formed.
  • the handle part 2 has a receptacle 14.1 for a tool element 16.1, 16.2 and a concave receptacle 1 1 for the convex counterpart 36 and a receptacle 38 for the step slider 21 and a recess 24 for the actuating portion 26th
  • the handle part 2 further comprises a guide 23 for a pin 29 of a lever arm 4.
  • the lever arm 4 comprises a receptacle 14.2 for a tool element 16.1, 16.2 and a concave receiving 20 for a rolling element 5.
  • the lever arm 4 further comprises a web 30 and a Protrusion 22.
  • the gripping part 2 furthermore comprises a hook-in recess 12 for receiving a first end section 31 of a leaf spring 6.
  • the handle part 2 further comprises fastening portions 28 for fastening the housing cover 8, for example by means of screws.
  • the fastening sections 28 may be bores, for example threaded bores.
  • the grip part 2 comprises a closed channel 10 on the mouth side. Furthermore, a rolling body 5 can be seen in FIG. Furthermore, turning or pivot points 13.1, 13.2 can be seen.
  • FIG. 3 shows the pliers 1 according to FIG. 1 in the semi-closed state.
  • FIG. 4 shows the pliers 1 according to FIG. 1 in the closed state.
  • FIGS. 5 to 7 differ from FIGS. 2 to 4 only insofar as the step slider 21 is located within the recess 24 at its end on the maul beginnerem and thus in an advanced position. Further, the pin 29 is in a raised position within the guide 23rd
  • the pin 29 is in Figures 2 to 4 in a lowered position and the step slider 21 is in a retracted position.
  • FIGS. 8 to 16 show further details of the components of the pliers 1.
  • FIG. 8 shows the tool element 16.1 for use in the receptacle 14.1.
  • the tool element 16. 1 comprises a fastening section 28, for example a bore or the like, in order to be fixed in the receptacle 14. 1 of the grip part 2.
  • FIG. 10 shows the step valve 21. Here, steps 25.1, 25.2, 25.3 can be seen and a Rast istselement 27 and the actuating portion 26th
  • FIG. 1 the tool element 16.2 for use in the receptacle 14.2 of the lever arm 4.
  • the tool element 16.2 includes a mounting portion 28, for example, a bore or the like, to be set in the receptacle 14.2 of the lever arm 4.
  • Figure 12 shows the leaf spring 6, wherein the first end portion 31 and the second end portion 32 can be seen. The end portions 31, 32 are bent.
  • FIG. 14 shows the housing cover 8, which comprises a first delimiting element 33 and a second delimiting element 34.
  • the mode of operation of the device according to the invention is explained as follows: In order to set the pliers 1 into the ready state, the components 16. 1, 16. 2, 8, 21, 6, 4, 8 shown in FIGS , 3, 2 assembled as shown in Figures 2 to 7.
  • the implant is placed in the mouth, i. placed between the jaws 7.2, 7.1 or between the tool elements 16.1, 16.2 used in the receptacles 14.1, 14.2.
  • the step valve 21 is in the retracted state, the actuator 26 is thus located within the recess 24 at the griff gloveem end.
  • the step valve 21 is in this case biased in the direction of the mouth towards or acted upon by a force.
  • an unillustrated spring strand can be provided.
  • the stage slider is further equipped with a locking means, also not shown, which allows the surgeon to lock the step slider 21 when it is in the retracted state.
  • the locking means can for example, interact with the Rast michselement 27 or partially formed by him.
  • the second end portion 32 of the leaf spring 6 exerts a force on the projection 22 of the lever arm 4.
  • the lever arm 4 is therefore moved upwards at the mouth-side portion, i. essentially in the direction of the concave receptacle 1 1, pressed. Since in turn the rolling element 5 is in the concave seat 20 and this is in direct contact both with the lever arm 4 and with the pressure lever 3, the force transmitted by the leaf spring 6 via the projection 22 on the lever arm 4 via the rolling element. 5 passed to the pressure lever 3. Since the convex counterpart 36 of the pressure lever 3 is in the concave seat 1 1, the pressure lever 3 can not move upwards. The force of the leaf spring 6 thus causes the convex counterpart 36 of the pressure lever 3 is pressed into the concave seat 1 1 and the pressure lever 3 is thus determined.
  • the projection 22 is disposed on the mouth-side portion of the lever arm 4 such that the force transmitted from the leaf spring 6 to the projection 22 results in a torque, wherein the pivot point is located substantially at the bottom of the concave seat 20.
  • the torque causes a handle-side portion, and thus in particular the pin 29 of the lever arm 4 down, i. in the direction of the Ein fatigueausappelung 12, are biased.
  • the pivot point 13.1 of the lever arm 4 within the guide 23 is always at the lowest, i. the Ein fatigueausappelung 12 nearest point.
  • FIGS. 5 to 7 A sequence or movement corresponding to the sequence of FIGS. 2 to 4 is shown in FIGS. 5 to 7. Compared to Figures 2 to 4, only the step slider 21 has advanced, so that the pivot point 13.1 of the lever arm 4 upwards, i. away from the Ein vonausströmung 12, is displaced. Of course, the guide 23 is designed so that the step slider 21 can extend through it in the longitudinal direction L.
  • the forceps 1 can be operated with one hand and allows the surgeon to edit implants that could previously only be edited with longer instruments with a correspondingly longer lever arm 4.
  • the pliers 1 is compact, in particular, pressure lever 3 and handle part 2 are designed to be so short that they can be operated with one hand. However, this forceps 1 can still apply the high force for processing an implant by distributing them over several strokes.
  • the implant or the like to be processed is introduced into the mouth and the locking means, not shown, of the stepped slide 21 is released.
  • the spring strand not shown, bias the step slider, wherein this is acted upon in the direction of the mouth out with a force.
  • the key figures of the spring strand and the leaf spring 6 are selected so that the force exerted by the leaf spring 6 on the lever arm 4 torque pushes the handle side portion of the lever arm 4 always down and in particular the pin 29 always in the lowest, i. the Ein fatigueaus Principleung 12 next-pressing position suppressed.
  • the force of the spring strand is selected so that the force acting on the step slider 21 towards the mouth force overcomes the torque caused by the leaf spring 6 and the step slider 21 pushes the pin 29 within the guide 23 upwards when in maul Wenner direction, ie moved towards the mouth too.
  • the movement of the step slider 21 in the jaw-side direction and the resulting rotational or pivotal movement of the lever arm 4, when the pin 29 moves upward within the guide 23, is usually limited by the implant located in the mouth. If the pin 29 moves upward within the guide 23, then the lever arm 4 makes a pivoting movement about a pivot point substantially at the base of the concave seat 20, so that ultimately the second jaw part 7.2 moves towards the first jaw part 7.1.
  • the force acting on the step slider 21 from the spring strand and, as described above, transmitted to the second jaw part 7.2 is capable of doing so Usually not to deform, bend or even cut the implant. Therefore, the pivoting movement of the lever arm 4 described above and caused by the step slider 21 is limited by the opening width 39 of the mouth, which corresponds to the diameter of the implant located in the mouth.
  • the mouth closes after release of the locking means, not shown, of the stepped slide 21 so far that the tool elements 16.1, 16.2 rest on the implant to be processed.
  • the smaller the diameter of the implant the further the step slider 21 moves towards the mouth after release of the locking means.
  • the step valve 21 can also remain in the position shown in FIG. 2 after the locking means has been released.
  • the step slider 21 can also move a little way in the jaw-side direction, so that the pin 29 comes to rest, for example, on the middle stage 25.2.
  • the surgeon presses the pliers 1, so moves the pressure lever 3 as in the figures 2 to 4 and 5 to 7 shown on the handle part 2 to.
  • the mouth closes partially or its opening width 39 decreases.
  • the driver 35 causes the rolling element 5 to move so that it assumes a position corresponding to FIGS. 2 and 5 respectively.
  • the driver 35 presses during the opening process on the upper, i. the concave receptacle 1 1 lying, portion of the rolling body 5 to this in the handle-side direction, i. on the gripping surfaces 37 to move. If the forceps 1 were compressed with the pin 29 lying on the middle step 25.2 of the step slider 21 and if the implant to be machined was cut or compressed or deformed so that its diameter to be machined decreases, then the step slider 21 is replaced by a jaw-side Direction acting force of the spring strand, not shown, moves in the direction of the mouth, as described in detail above. The pin 29 then comes to rest at the end of the opening process on the third stage 25.3.
  • the surgeon can squeeze the pliers 1 again.
  • the surgeon can apply the forceps 1, for example, to the implant to be machined by placing it inside the mouth.
  • the locking means of the step slider 21 is released and the surgeon performs several strokes successively or pushes the pliers 1 together several times and thus cuts or bends the implant to be processed with the power of all performed strokes without the surgeon further settings on the forceps. 1 must make.
  • the pliers 1, a stroke distribution by a variable translation ready. The force required to machine an implant or the like is distributed over several strokes.
  • the pliers 1 can be made more compact, because it is not necessary, according to the lever law long lever arms, ie a long pressure lever 3 and a long handle part 2 to provide.
  • the pliers 1 can be operated comfortably with one hand. It can also be made lighter and due to the lower weight better in the hand. Furthermore, thus also saves material.
  • the web 30 serves to reinforce the lever arm 4. By this does not bend when using the pliers 1. If the lever arm 4 is moved in the bent state, unwanted friction occurs between the lever arm 4 and the first limiting element 33 when the lever arm 4 is bent around the concave receptacle 20 in such a way that pins 29 and receptacle 14.2 approach each other.
  • the web 30 serves as a stabilizing device to stiffen the lever arm 4 functionally.
  • the leaf spring 6 can also act on the lever arm 4 in a different way than by the second end portion 32.
  • the projection 22 may be replaced by another device, for example by a notch or the like, or by another suitable return means which can move the rolling element 5 in the desired position when the forceps 1 opens.
  • a device may be provided which replaces the torque transmitted by the leaf spring 6 to the lever arm 4.
  • a spring or the like may be provided which downwardly locks the handle-side section of the lever arm 4 and in particular the pin 29, ie in the direction of the hook-in recess 12. suppressed.
  • the web 30 may be replaced by another stabilization device.
  • any means is suitable, which stiffen the lever arm 4 functionally.
  • By selecting a particularly low-bending, but usually expensive material can also be dispensed with the web 30 without the function of the forceps 1 suffers. If it is dispensed with the web 30 is generally only to be feared that, for example, between the first limiting element 33 and the lever arm 4 to undesirable friction, when the lever arm 4 moves. If the web is dispensed with, then it is not necessary to have two rolling elements 5, because the concave mount 20 is not divided into two, as can be seen in FIG. Both the guide 23 and the pin 29 can be replaced by other suitable means. It is only necessary to ensure that the selected devices cooperate as described above for pin 29 and guide 23.
  • the pin 29 or a corresponding suitable device should be movable within the guide 23 or the corresponding suitable device only in one direction.
  • the pin 29 or the corresponding suitable device should be rotatable in any position about the pivot point 13.1.
  • Additional or alternatively to the gripping surfaces 37, rings or the like may be provided. It may also be intended to other known devices for the handling of such instruments, in particular of pliers.
  • the step valve 21 may have more or fewer stages 25 according to the purpose of use.
  • pin 29 and guide 23 is also conceivable for a continuous design, so that the slide is continuously displaceable along the longitudinal axis L.
  • another suitable guide element can be used.
  • An inclination or a gradient of the step valve can also be adapted to the purpose of use.
  • the steps 25 could themselves be designed with a slope.
  • any means can be used which is able to bias the step slider 21 as described.
  • the leaf spring 6 can be replaced by one or more suitable means, which bias the mouth-side portion of the lever arm 4 upwards in the direction of the concave seat 1 1 and the handle-side portion of the lever arm 4 down in the direction of the bottom of the guide 23 and can bias substantially in the direction of the Ein vonströmströmung 12 out. According to a simple embodiment, it is also possible to dispense with a means which pretensions the handle-side section downwards.
  • a closed channel 40 can be seen, which extends through which of the step shifter 21 in the mouth-side direction.
  • This closed channel 40 can be replaced by other suitable means.
  • the second limiting element 34 of the housing cover 8 may be sufficient for fixing the step slider 21 within the handle part 2.
  • the attachment portions 28 for fixing the housing cover 8 on the handle part 2 and fixing the tool elements 16.1, 16.2 on the receptacles 14.1, 14.2 may be replaced by suitable means. If the fastening sections 28 are designed as a threaded bore, this has the advantage that the pliers 1 can be easily dismantled by means of a screwdriver and can thus be easily cleaned.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Forests & Forestry (AREA)
  • Ophthalmology & Optometry (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne un instrument (1) comportant une partie formant poignée (2) et un levier de pression (3) qui est monté de façon mobile par rapport à la partie formant poignée (2), et un bras de levier (4) qui est monté de façon mobile par rapport à la partie formant poignée (2) autour d'un point d'articulation ou d'un point pivot (13), une section de la partie formant poignée (2) étant formée comme première partie formant mâchoire (7,1) et une partie du bras de levier (4) étant formée comme deuxième partie formant mâchoire (7,2), l'instrument (1) étant conçu de telle sorte que la levier de pression (3) agit sur le bras de levier (4) avec une force, quand le levier de pression (3) est déplacé par rapport à la partie formant poignée, (2) afin de déplacer la deuxième partie formant mâchoire (7,2) par rapport à la première partie formant mâchoire (7,1), caractérisé par un dispositif (21) pour déplacer le point d'articulation ou le point pivot (13), qui est conçu pour déplacer le point d'articulation ou point pivot (13) du bras de levier (4).
PCT/EP2017/056961 2016-03-24 2017-03-23 Instrument, en particulier instrument chirurgical WO2017162809A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016105637.5 2016-03-24
DE102016105637.5A DE102016105637B3 (de) 2016-03-24 2016-03-24 Instrument, insbesondere Chirurgisches Instrument

Publications (1)

Publication Number Publication Date
WO2017162809A1 true WO2017162809A1 (fr) 2017-09-28

Family

ID=58410322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/056961 WO2017162809A1 (fr) 2016-03-24 2017-03-23 Instrument, en particulier instrument chirurgical

Country Status (2)

Country Link
DE (1) DE102016105637B3 (fr)
WO (1) WO2017162809A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022105626A1 (de) 2022-03-10 2023-09-14 Kavo Dental Gmbh Instrumentenkopf mit hebelmechanismus zum spannen eines behandlungswerkzeugs

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB139528A (en) 1918-05-10 1920-03-11 George Hutchinson Improvements in cutting and shearing tools
US3572192A (en) * 1968-05-10 1971-03-23 Stanley M Juras Squeeze type tools
US3793914A (en) * 1972-06-14 1974-02-26 H Helms Vise grip pliers
EP1414357A1 (fr) * 2002-06-01 2004-05-06 Karl Storz GmbH & Co. KG Instrument medical de prise et de maintien
WO2010005437A1 (fr) * 2008-07-10 2010-01-14 Paul Caravello Dispositifs de coupe ou de prise réglables utilisant un composé
WO2014195295A1 (fr) 2013-06-04 2014-12-11 Karl Klappenecker Gmbh & Co.Kg Pince
US20150047208A1 (en) * 2013-08-19 2015-02-19 Amitai Holenberg Double fulcrum tool

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118528C2 (de) * 1991-06-06 1993-10-07 Esser Franz Dipl Ing Fh Schneidwerkzeug für gärtnerische Zwecke
TW201302394A (zh) * 2011-07-12 2013-01-16 Ming-Jie Wu 萬能鉗

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB139528A (en) 1918-05-10 1920-03-11 George Hutchinson Improvements in cutting and shearing tools
US3572192A (en) * 1968-05-10 1971-03-23 Stanley M Juras Squeeze type tools
US3793914A (en) * 1972-06-14 1974-02-26 H Helms Vise grip pliers
EP1414357A1 (fr) * 2002-06-01 2004-05-06 Karl Storz GmbH & Co. KG Instrument medical de prise et de maintien
WO2010005437A1 (fr) * 2008-07-10 2010-01-14 Paul Caravello Dispositifs de coupe ou de prise réglables utilisant un composé
WO2014195295A1 (fr) 2013-06-04 2014-12-11 Karl Klappenecker Gmbh & Co.Kg Pince
US20150047208A1 (en) * 2013-08-19 2015-02-19 Amitai Holenberg Double fulcrum tool

Also Published As

Publication number Publication date
DE102016105637B3 (de) 2017-06-22

Similar Documents

Publication Publication Date Title
DE10102089C1 (de) Chirurgisches Instrument
EP1222903B1 (fr) Instrument chirurgical pour implanter une prothèse intervertébrale
DE10327230B4 (de) Distraktor sowie Valve und Griffelement für einen Distraktor
EP1941975B1 (fr) Pince de serrage destinée au serrage d'outils
EP2082837B1 (fr) Pince à sertir
DE19832798C1 (de) Anlegegerät für eine Knochenplatten-Fixiereinrichtung
DE102008012011B3 (de) Zangenkopf
EP2249715B1 (fr) Instrument chirurgical démontable
DE102006012754A1 (de) Chirurgisches Instrument
EP3012923A1 (fr) Pince de pression
DE3709067A1 (de) Medizinisches, insbesondere chirurgisches instrument
EP1306064A1 (fr) Instrument destiné à implanter une prothèse intervertébrale
EP3136990B1 (fr) Partie mâchoire pour un instrument chirurgical à tige tubulaire
DE4115937A1 (de) Chirurgisches schneideinstrument
DE10136964A1 (de) Chirurgisches Instrument
EP1488749A1 (fr) Dispositif médical
DE202008017199U1 (de) Chirurgischer Raspelgriff und chirurgische Raspel
DE102016105637B3 (de) Instrument, insbesondere Chirurgisches Instrument
DE19906360A1 (de) Chirurgisches Rohrschaftinstrument
EP1055487A1 (fr) Pince avec machoires paralleles
DE19747043C2 (de) Endoskopisches Instrument
EP2926746B1 (fr) Instrument chirurgical
DE4223162A1 (de) Greifvorrichtung zum Greifen chirurgischer Instrumente
EP1411842B1 (fr) Instrument chirurgical servant a pincer et a couper
EP3003176B1 (fr) Pince

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17713261

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17713261

Country of ref document: EP

Kind code of ref document: A1