US20130344453A1 - Fuhrungselement und vorrichtung zum einbringen einer knochenbohrung - Google Patents

Fuhrungselement und vorrichtung zum einbringen einer knochenbohrung Download PDF

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US20130344453A1
US20130344453A1 US13/884,188 US201113884188A US2013344453A1 US 20130344453 A1 US20130344453 A1 US 20130344453A1 US 201113884188 A US201113884188 A US 201113884188A US 2013344453 A1 US2013344453 A1 US 2013344453A1
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Prior art keywords
guide element
hollow body
hole
inlet opening
working
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Abandoned
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US13/884,188
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English (en)
Inventor
Klaus Eder
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Jeder GmbH
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Jeder GmbH
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Publication of US20130344453A1 publication Critical patent/US20130344453A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/176—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the jaw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0046—Dental lasers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • A61C8/0092—Implanting tools or instruments for sinus lifting

Definitions

  • the invention relates to a guide element according to the preamble of claim 1 and a device for penetrating extension of a blind hole introduced into hard tissue, in particular into the jaw bone, according to claim 15 .
  • Sinus lift means an operation in which the mucosa of the maxillary sinus or sinus membrane or Schneider's membrane is partially detached and lifted to create a space between the bone and the mucosa of the maxillary sinus.
  • an autologous bone for example from the tuber maxillae, the linea obliqua, the chin region or from the hip crest (bone replacement materials, bone graft) or a synthetic bone replacement material, for example bone replacement material of the brand Bio-Oss® from the company Gottlich AG, often mixed with autologous bone, is then introduced. This material is intended to convert into bone within 6 months, to ensure a solid base for an implant.
  • the conventional approach for a sinus lift is to prepare a mucoperiostal flap, buccally in the region of the molars, and to mill an oval window into the thus exposed bone, without damaging the underlying mucosa of the maxillary sinus.
  • the oval bone disc which his attached to the mucosa of the maxillary sinus is then carefully pushed in the direction of the maxillary sinus, wherein the mucosa of the maxillary sinus is carefully detached from the bone around the window using special instruments. Because the mucosa of the maxillary sinus is very fragile, comparable to the chorion of an egg, this procedure has to be performed very carefully because of the risk of damaging the mucosa of the maxillary sinus.
  • the space which is thus created in the maxillary sinus is then filled with the bone replacement material and the buccal window is covered with a film.
  • the film is made of an absorbable material such as a membrane of the brand Bio-Gide® of the company Geistlich AG.
  • the mucoperiostal flap is densely sutured up.
  • This method is relatively invasive and causes stress to the patient due to strong swelling and discoloration up to 10 days, and may also involve pain.
  • This surgical procedure is often also referred to as “open” or “classical” sinus lift.
  • the implants can be inserted at the same time of the sinus lift (one time sinus lift). The implants can be exposed to full load only after solidification of the bone replacement material. When the residual bone height is too thin, the insertion of the implants is performed in a second procedure about 6-8 months after the sinus lift (second sinus lift).
  • a newer method is the so called crestal sinus lift which does not require folding open of the bone plate.
  • Access to the maxillary sinus is enabled from the jaw crest.
  • the oral mucosa is punched through up to the bone by means of a specially provided punch (Jesch's punch) and a blind hole is milled into the bone up to just below the mucosa of the maxillary sinus with a cylindrical milling machine.
  • the punch used for this automatically lifts the mucosal disc from the bone and creates a central through hole for the further bore or milling.
  • the bore is milled below the bony sinus floor generally antral i.e., starting from the crest by means of a cylindrical milling tool for example with a diameter of 3.5 to about 1 mm, wherein the bone thickness is previously measured by means of X-ray. Because the mucosa of the maxillary sinus must not be damaged by the milling tool, the jaw bone must not be fully drilled through with the milling tool, so that at the bottom of the blind hole a thin bone plate remains, against the backside of which the mucosa of the maxillary sinus rests.
  • this thin bone plate is then carefully pushed in the direction of the maxillary sinus with a cylindrical instrument, so that it is pushed in the direction of the maxillary sinus along with the mucosa of the maxillary sinus which is attached above the bone disc to the top of the bone disc.
  • This “puncturing” of the bone disc is a critical point for the procedure because an excessive pushing-in of the bone disc leads to the mucosa of the maxillary sinus being lifted tent-shape and being tensioned, which may lead to damage to the mucosa of the maxillary sinus.
  • the mucosa of the maxillary sinus is then carefully lifted, and the bone replacement material is then introduced into the newly created free space via the bore.
  • the implant is then anchored mostly directly in the bore.
  • WO 2010/048648 A1 Such an advantageous means is known from WO 2010/048648 A1, where a device is described which has a tubular body with a distal working opening and an entry opposite the working opening, which entry is closed by a sealing element which is traversed by a shaft of a working tool, e.g. of a milling tool.
  • a connection for applying an internal pressure is arranged on the tubular body.
  • the tubular body is sealingly inserted into a blind hole which was previously introduced into the jaw bone, wherein the distal working opening rests against the end of the blind hole thereby mostly sealing the inner space.
  • the working medium inside the tubular body preferably NaCl solution, can now be pressurized via the connection, for example by means of a syringe connected to the connection.
  • the bone disc which remains between the blind hole and the maxillary sinus is milled off in the region of the working opening.
  • the overpressure in the interior of the tubular body causes the working medium to enter through the free opening and to push the sinus membrane located there behind away from the bone and with this out of the working area of the working tool and out the zone of danger.
  • the discharge of the working medium causes the pressure to decrease which indicates the perforation of the bone and also prevents an excessive bloating of the sinus membrane.
  • Such a device is safe to operate, and excellent surgical result with minimal risk to the mucosa of the maxillary sinus can be achieved with such a device.
  • a certain disadvantage is that cleaning of the device is relatively costly and difficult.
  • it is very difficult to clean the thin connection channel via which the pressure medium is supplied into the tubular body or the pressure chamber, thoroughly enough so that no contaminations remain.
  • each reuse of medical equipment or products in the field of surgery bears certain infection risks for the patient and any contamination can lead to health problems, disease or even death of the patient.
  • This object is solved by creating a guide element which is especially configured according to the characterizing features of claim 1 .
  • This guide element according to the invention can be arranged as cost saving exchangeable component on the surgical device and can be used as expendable single use item.
  • the guide element is particularly suited, shaped and configured to be arranged on a device for penetrating extension of a blind hole introduced into hard tissue, in particular the jaw bone.
  • a device for penetrating extension of a blind hole introduced into hard tissue, in particular the jaw bone.
  • a device includes a hollow body which forms an internal pressure chamber and has a distal working opening and an inlet opening opposite the working opening. This device essentially also corresponds to the device known from WO 2010/048648 A1.
  • the guide element according to the invention is insertable into the inlet opening of the device with a form fit, whereby the device can be sealingly closed by inserting the guide element.
  • the guide element also has a through hole through which a shaft of a working tool, for example a milling tool can be passed and inserted into the hollow body of the device there underneath.
  • a connection for supply of a working medium is provided in the guide element for establishing the required internal pressure in the chamber. This pressure serves for pushing away the sinus membrane after perforating the bone.
  • the guide element ensures that when applied correctly, a pressure chamber can be formed in the first place or a sufficient pressure can be built up.
  • the pressure medium is also supplied exclusively via or through the guide element, in contrast to the device of WO 2010/048648, in which the pressure medium is supplied via a fixed, lateral connection socket which directly enters into the pressure chamber and is difficult to clean. Beside these two functions, the guide element also ensures that the shaft of the working tool is sealingly inserted into the blind hole and at the same time can be moved to remove the remaining floor plate.
  • a significant advantage is that the guide element can be exchanged, and after the intended use can be detached and discharged, which increases the safety of the surgical procedure and strongly decreases the risk of infection for the patient.
  • the guide element can thus be manufactured, distributed and stored as separate, aseptically packaged component similar to a syringe or syringe needle and is removed from the packaging just prior to the surgery and connected to the surgical instruments, and disposed after use.
  • Such a disposal of the device of WO 2010/048648 would not be advisable, because this is an expensive precision component made of stainless steel. In this way, it is also ensured that a possible expiration date is observed or not exceeded and the operational safety is ensured.
  • the guide element causes a pressure tight and essentially fluid tight closure of the inlet opening. Even though certain minor leakiness and/or leakage of pressure medium is tolerable, the required buildup of pressure and the maintenance of this pressure can be significantly better achieved when the guide element closes the inlet opening as tight as possible. A decrease in pressure which occurs when perforating the bone can also be detected better, faster and more reliably, and the milling tool can be stopped in time.
  • the through hole of the guide element causes a pressure tight and essentially fluid tight support and guiding of the shaft, also in order to achieve the internal pressure in the pressure chamber of usually about 2 to 2.5 Bar in the first place and then maintain this pressure.
  • the through hole has to be configured so that at least one advance movement, drive and/or control movement of the shaft is ensured for example a rotation, a circular movement and/or an axial forward movement of the shaft when removing the floor plate of the blind hole, without significantly negatively affecting the sealing properties.
  • a sealing element for example an O-sealing is arranged inside the through hole for further sealing the shaft.
  • a sealing element for example an O-sealing
  • the sealing element functions as shaft sealing and has to seal the rotating shaft without excessively limiting its freedom of movement. This requires a relatively high quality of the sealing element and leads to a fast wear of the sealing element.
  • sealing element one-piece or in one part in particular as sterilisable, disposable plastic injection-molded part, has the advantage that it can be manufactured easily and cost effectively and ensures a contamination free working.
  • the through hole is arranged in a disc-shaped head region of the guide element, preferably centered, and the connection is configured as socket for connecting a tube line and preferably extends radially outwardly.
  • an inner channel which is closed from all sides can be formed in the guide element, which channel connects the connection with an outlet opening which leads into the inlet opening.
  • the channel extends separate from the through hole over its entire extent.
  • first subsection of the channel which is proximate to the connection, extends perpendicular to the central longitudinal axis of the through hole, and a second adjoining subsection of the channel is essentially parallel to the central longitudinal axis of the through hole. In this way, the channel can be worked into the guide element very easily for example also by subsequent borings.
  • a preferably cylindrical projection is formed on the side of the guide element which faces the inlet opening, and is preferably surrounded by a sealing element, for example an O-ring.
  • a tapered, frustrum-shaped sleeve which is open at its bottom is formed on the side of the guide element which faces toward the inlet opening, which sleeve is traversed centrally by the through hole. This extends the through hole and enhances the sealing effect, and the guiding of the shaft.
  • the sleeve rests slightly closer and more sealingly against the shaft than the reaming portion of the through hole.
  • the sleeve in particular its front most distal section, thus contributes the most to the sealing and embraces the shaft particularly closely and tightly.
  • the other sections of the through hole also seal well over their entire length but a certain play remains between the shaft and the inner surface of the through hole. This allows the shaft to slightly move radially, advantageously supported by flexible material properties of the guide element which allow for a certain distortion. Due to its small material thickness the sleeve is slightly more flexible anyway and permits tumbling movements of the shaft. With this, the sleeve improves the tightness as well as the movability of the milling tool.
  • the sleeve is formed on the cylindrical projection and the greater diameter of the sleeve is preferably smaller than the diameter of the projection.
  • the guide element is inserted into the surgical instrument with a rotating and pivoting movement, it is advantageous when the bottom side of the guide element which faces the inlet opening is smooth and planar, which enables an easy pivoting of the guide element.
  • the invention relates to a device or a surgical instrument for penetrating extension of a blind hole introduced into hard tissue, in particular into the jaw bone.
  • This device includes a working tool for example a milling tool, the guide element according to the invention and a hollow body which forms a pressure chamber.
  • This hollow body has a preferably cylindrical inner hollow space with a distal working opening and an inlet opening opposite the working opening. The inlet opening is closed with the guide element, further, a shaft of the working tool is passed through or can be passed through the through hole and can be inserted into the hollow space of the hollow body.
  • a tube line for introducing a fluid working medium for generating an internal pressure in the pressure chamber can be connected to the connection of the guide element.
  • the drill head of the milling tool is significantly smaller than the blind hole and has a small-surfaced tip which may be strongly curved. This ensures a punctiform peroration of the bone plate which reduces the risk for the sinus membrane. In this way, the fluid can already flow through the small initial opening before the drill head breaks through with its entire diameter and would come into contact with the sinus membrane. A large-surface initial perforation of the bone plate, as would be the case with flat drill heads, is not advantageous.
  • Advantageous embodiments of this device provide for example that the guide element closes the inlet opening, and with this the pressure chamber, pressure tight and essentially fluid tight and a preferably constant pressure of at least 2 bar can be achieved inside the pressure chamber.
  • the shaft is supported and guided in the through hole in a pressure tight and essentially fluid tight manner and a preferably constant pressure of at least 2 bar can be reached inside the pressure chamber, however, at the same time at least an advance movement, drive movement, and/or control movement of the shaft for example a rotation, a circulating motion and/or an axial advance movement of the shaft is ensured.
  • this allows reaching and maintaining the pressure required for pushing away the sinus membrane, at simultaneous retention of the movability of the working tool.
  • a very easy handling can be achieved in that a handle element is arranged on the hollow body. With this, the surgeon or dentist can securely place the hollow body in the blind hole and remove the hollow body again.
  • a constructively advantageous and easy to use embodiment is achieved in that the guide element is arranged in a recessed region on the distal end of the handle element.
  • the tube line extends in a, as the case may be with fixing elements provided in the handle element formed groove, it is ensured that the tube line is supported securely and space effectively and a bending or unintended tearing off from the connection is not possible.
  • a latching through hole can be formed preferably in the border surface of the recessed region, into which latching through hole the corresponding latching element of the guide element can be clicked and the guide element can be fixed in this position, wherein the engagement occurs in particular by a rotating and pivoting of the guide element by about 30° to 50° with the through hole as rotation axis.
  • the uppermost portion of the hollow body which is to be inserted into the blind hole can be configured conical.
  • the conical region can be pressed into the blind hole by applying manual force. This is advantageous in particular when a handle extension is provided which impedes a rotation of the instrument which has been inserted into the bore in the mouth region.
  • the rotation of the instrument can serve for screwing the instrument into the bore.
  • a self cutting thread can be provided on the hollow body in the region which is to be introduced into the blind hole. This ensures a secure fit of the hollow body in the bore and improves the sealing against to the inner walling of the bore.
  • a flange which can be provided on the outside of the hollow body and can be adjusted along the hollow body and detachably fixed to the hollow body, has a conical sealing attachment which reaches between the hollow body and the walling of the blind hole. This flange is pressed against the oral mucosa with the cone and then fixed for example by means of an Allen screw, thereby also closing this end of the pressure chamber pressure tight.
  • an elastic bellow can be arranged between the guide element and the working tool.
  • the working tool is a rotatingly driven working tool for example a milling tool, or a rotation-free working tool, for example an ultrasound osteotome or a laser cutting device.
  • a rotatingly driven working tool for example a milling tool
  • a rotation-free working tool for example an ultrasound osteotome or a laser cutting device.
  • Such working tools are described in detail in WO 2010/048648 A1 and are hereby incorporated by reference into the present application.
  • rotation-free means that the working tool and the sealing element contact one another essentially without the occurrence of relative velocities, because the working tool does not rotate about its main axis.
  • a rotating shaft does not have to be sealed by means of a rotation shaft sealing, which lowers the stress on the sealing element.
  • the working tool can be a piezoelectric surgical instrument, preferably an ultrasound ostetome which operates in a range between 20 and 200 micrometers.
  • the working tool can be a laser cutting tool which has preferably a pulsed CO2-Laser or a solid-state laser, wherein the wavelength of the laser is preferably adjusted to the absorption characteristics of the bone tissue and can be coupled with an endoscope.
  • the milling tool can be connected with a manual or automatic control unit via the connection. This enables an exact regulation and control of the internal pressure, wherein the perforation of the bone can be immediately recognized by way of the decrease in pressure and the milling tool can be switched off if necessary.
  • additional vibrations preferably pressure-free ultrasound vibrations can be introduced into the system or the working medium in order to accelerate detachment of the sinus membrane.
  • the diameter of the shaft decreases toward the drill head with at least one step.
  • the partial section of the shaft which lies in the region of the pressure chamber has a smaller diameter than the partial section of the shaft which lies sealingly in the region of the through hole. In this way, the shaft is sealingly supported in the through hole, however, a pressure chamber of sufficient size remains and the shaft has sufficient mobility to allow removal of the remaining bone plate as completely as possible.
  • the invention also relates to a set including the guide element according to the invention and a tube line for connection to the guide element and optionally a syringe for generating the required internal pressure, wherein the guide element and the tube line as well as the syringe are sterilized and aseptically packaged in a closed container, preferably a plastic bag. This facilitates storage and handling and ensures contamination free working.
  • FIG. 1 shows the guide element according to the invention in a perspective view obliquely from above.
  • FIG. 2 shows the guide element according to FIG. 1 in a view oblique from below.
  • FIG. 3 shows the entire device with the guide element according to the invention, the hollow body and a working tool.
  • FIG. 4 to 7 show stepwise the preparation and assembly of the device.
  • FIG. 4 shows the insertion of the guide element into the hollow body.
  • FIG. 5 shows the pivoting of the inserted guide element.
  • FIG. 6 shows the device after the latching engagement with of the guide element.
  • FIG. 7 shows a cross section through the device with inserted shaft of the working tool at the time point of perforation of the working tool through the bone plate.
  • FIG. 1 shows a particularly preferred exemplary embodiment of the guide element 100 according to the invention in an oblique view from above.
  • the here shown guide element 100 is formed by a sterilizable polymer, as it is known in the field of medical technology.
  • the guide element is configured one-piece or as one part and is produced by means of injection molding. However, sealings and bores can be performed subsequently.
  • a cylindrical through hole 101 is formed centrally, which completely traverses the guide element 100 .
  • the shaft 5 of a working tool 6 for example a milling tool is passed through this through hole 101 .
  • the diameter of the through hole 101 is slightly greater than the diameter of the shaft 5 of the working tool 6 , so that the milling tool 5 , 6 remains movable in the hollow body 1 , and working medium can flow around the milling tool 5 , 6 .
  • connection 108 Adjoining this head region 110 is a connection 108 in the form of a socket for fastening a tube line 111 which is not shown in this Figure.
  • the tube line 11 is inserted into this socket.
  • the connection 108 extends radially and outwardly from the center of the through hole 101 , and the central longitudinal axis lies in the plane of the disc-shaped head region 110 which plane is oriented parallel to the surface.
  • a projecting nose 109 Adjacent to the connection 108 , a projecting nose 109 is formed, which extends tangentially from the head region 110 parallel to the connection 108 and protrudes height wise as well as longitudinally over the connection 108 .
  • the nose 109 serves on one hand for securing the connection of the tube line 111 and for better grip during pivoting.
  • a slightly downwardly offset, projecting latching element 107 is molded with which the guide element 100 can be reversibly fastened to the device.
  • a cylindrical elevation which is arranged around the through hole 101 can be formed on the topside of the guide element 100 , in particular for improving the guiding and the tightness.
  • FIG. 2 shows the guide element 100 from the opposite side obliquely from below.
  • the bottom surface 106 of the guide element 100 which bottom surface 106 faces the bone 24 during operation, is smooth and planar, which ensures a good slideability and rotatablility and pivotability.
  • a cylindrical projection 104 is formed in the head region 110 , and is surrounded by a sealing element 4 in the form of an O-ring which is retracted in a groove. With this, the guide element 100 is form fittingly inserted into the device, as described in the following Figures.
  • An upwardly tapered frustrum-shaped sleeve 105 is molded on the projection 104 .
  • the greatest diameter on the base of the sleeve 105 is about 30 to 40% smaller than the diameter of the cylindrical projection 104 .
  • the cylindrical projection 104 and the sleeve 105 are arranged concentrically around the central longitudinal axis of the through hole 101 and are traversed in their center by the through hole 101 .
  • a channel 102 which is closed from all sides and is located completely inside the guide element 101 , extends from the connection 108 and connects the connection with the outlet opening 103 .
  • the outlet opening 103 leads out at the bottom surface of the cylindrical projection 104 adjacent the sleeve 105 and ensures introduction of the fluid working- or pressure medium, in most cases physiological saline solution, into the inlet opening 3 of the device.
  • the channel 102 is separated from the through hole 101 along its entire extent.
  • the channel 102 has a first subsection which is near the connection 108 and has an initial greater diameter, and is oriented perpendicular and radially relative to the longitudinal axis of the through hole 101 . The diameter of the channel 102 then decreases and the channel turns at a right angle.
  • This adjoining second subsection extends essentially parallel to the central longitudinal axis of the through hole 101 . In this way, the channel 102 can be formed constructively simple in the one-piece guide element, for example by two subsequent bores.
  • FIG. 3 shows the device according to the invention in a perspective view.
  • This exemplary and not limiting device for penetrating extension of a blind hole in the jaw bone 24 includes a working tool 6 in the form of a milling tool 6 , and the guide element 100 described above which is fixedly connected with a hollow body 1 .
  • the hollow body 1 is arranged on a handle element 112 which has the shape of a flat small rod.
  • the guide element 100 is arranged in a recessed region 113 on the front end of the handle element 112 .
  • the hollow body 1 has an essentially cylindrical inner space 12 , a distal working opening 2 , and an inlet opening 3 opposite the working opening 2 . Through this inlet opening 3 the pressure medium as well as the shaft 5 of the working tool 6 is inserted into the hollow space 12 of the hollow body 1 .
  • the hollow body 1 is essentially constructed as the tubular body described in WO 2010/048648.
  • the formed pressure chamber 7 can either be located completely inside the hollow body 1 , when the working opening 2 is sealingly flush with the bottom of the blind hole. However, the pressure chamber 7 can also extend up to a region outside the actual hollow body 1 , which is delimited by the walling of the blind hole and the conical sealing unit or the flange 11 . During operation, both these features have a sealing effect and complement each other in order to maintain the system as pressure tight and fluid tight as possible.
  • the inlet opening 3 on the other end of the pressure chamber 7 is closed in a pressure tight and fluid tight manner by the tightly and form fittingly inserted guide element 100 .
  • the shaft 5 is already inserted and traverses the through hole 101 , however, it does not yet exit through the working opening 2 , and is thus not yet operational.
  • the tube line 111 is already connected, thus enabling supply of pressure medium into the inside of the hollow body 1 .
  • the tube line 11 extends in a recessed groove 114 which is configured as handle element 112 . This groove is bent meander-shaped at two points in order to fasten the tube on these fixing elements 117 .
  • the tube line 111 can lead to a syringe or to a manual or automatic pressure control unit, with which the pressure can be introduced and controlled.
  • FIGS. 4 to 7 show the stepwise preparation of the device for the procedure:
  • the guide element 100 is already connected with the tube line 111 however, not yet attached to the hollow body 1 .
  • the recessed region 113 can be recognized in which the guide element 100 is arranged.
  • the inlet opening 3 is arranged, which defines the access to the inner hollow space 12 of the hollow body 1 .
  • the inlet opening 3 is initially very wide and configured cylindrical in a first section up to a stop or a circumferential stop surface 119 which has a decreased diameter relative to the through hole 101 .
  • the inlet opening 3 is tapered downwardly conically and forms a funnel shaped hollow region. Inside the hollow body 1 extends the essentially cylindrical hollow space 12 up to the working opening 2 .
  • the guide element 100 is already form fittingly and sealingly inserted into the inlet opening 2 with the projection 104 .
  • the guide element 100 is then rotated or pivoted by about 30° to 40° in the direction of the arrow, until the connection 108 essentially points toward the start of the groove 114 . Practically, the pivoting is carried out by gripping and applying pressure on the nose 109 .
  • the latching element 107 can be latchingly engaged in a form fitting and force fitting manner into the corresponding latching recess 115 in the handle element 112 , more specifically into the vertical border surface of the recessed region 113 , thereby fixing the guide element 100 in position.
  • FIG. 7 shows a cross section through the device with inserted shaft 5 of the working tool 6 during a sinus lift at the time point when the working tool 6 perforates the bone plate of the haw bone 24 of the upper jaw.
  • FIG. 7 shows the device in its spatially correct positioning in practice relative to the patient.
  • a blind hole is introduced into the jaw bone 24 in a prior procedure starting from the jaw crest, wherein an approximately 1 mm deep bone plate remains between the end of the blind hole and the maxillary sinus 25 . This is necessary in order to prevent damage to the mucosa of the maxillary sinus 26 which rests against the jaw bone 24 in the maxillary sinus 25 .
  • the hollow body 1 is sealingly inserted into the prepared blind hole, until the working opening 2 abuts the bone plate.
  • the hollow body 1 stands still during the procedure, is fixed in position and can even be screwed in.
  • the flange 10 is shifted on the tube body 1 towards the jaw bone 24 , so that the conical sealing portion 11 which is arranged on the flange 10 is strongly pushed against the oral mucosa 27 at the outer border of the blind hole, and the blind hole is sealed.
  • a cofferdam can also be used inside the pressure chamber 7 . Inside the pressure chamber 7 , a hydrostatic pressure of about 0.5 to 3 bar can then be established.
  • the working medium in the pressure chamber 7 serves simultaneously for dissipating heat generated by the milling and as lubricant for the rotating shaft 5 .
  • Small amounts of working medium which can leak along the rotating shaft 5 do not pose a problem for the functionality of the device, because the pressure of the working medium can be maintained in the pressure chamber 7 via the connection 108 .
  • Good sealing properties are nevertheless very advantageous because the pressure decrease at the moment of perforation of the bone plate can be more readily recognized when the pressure chamber is sealed tight.
  • the shaft 5 of the working tool 6 is inserted through the through hole 101 and the inlet opening 3 into the inside of the hollow body 1 .
  • the diameter of the shaft 5 is configured to decrease toward the tip.
  • the diameter of the shaft 5 decreases in the region of the entry point of the inlet opening 3 by about one quarter.
  • sufficient space remains between the shaft 5 and the inner surface of the hollow space 12 to form the pressure chamber 7 and to provide sufficient freedom of movement for the milling tool to perform tumbling movements.
  • the diameter decreases again by one quarter.
  • the outermost tip or the drill head of the milling tool 6 or the shaft 5 is relatively strongly curved or essentially configured puncitform in order to ensure as much as possible a puncitform, small-surface perforation through the bone plate.
  • the shaft 5 traverses the through hole 101 , the inlet opening 3 and the inner hollow space 21 of the hollow body 1 completely and exits through the working opening 2 , so that the remaining bone plate can be worked on.
  • the distal region of the shaft 5 with smaller diameter can be guided through the through hole 101 relatively easily, the rear region with greater diameter then comes to sit form fittingly in the through hole 101 .
  • the shaft 5 thus sealingly rests against the inner surface of the through hole 101 in this region or is additionally also sealed, guided and supported in the region of the cylindrical projection 104 and the sleeve 105 .
  • an additional sealing for example an O-ring can also be provided however, this is not the case in the present exemplary embodiment.
  • the shaft 5 is movable axially, i.e., upwards and downwards according to the arrow, which is required especially in the case of rotating milling tools 6 in order to achieve the necessary forward advance for milling through the bone plate in the jaw bone 24 .
  • This rotating movement is also possible when using a working tool with a shaft 5 which rotates about its own axis.
  • the shaft 5 is nevertheless supported fluid tight and pressure tight especially in the region of the sleeve 105 , and a sufficient pressure can be built up in the pressure chamber 7 when the hollow body 1 is sealingly inserted into the blind hole.
  • the working medium for example a physiological saline solution
  • the working medium for example a physiological saline solution
  • the rinsing medium flows outside along the sleeve 105 and along the shaft 5 into the inner space 12 or the pressure chamber 7 .
  • the milling tool 6 in FIG. 7 is then progressively moved further downward, so that the milling head exits at the lower end through the working opening 2 and touches the floor plate, wherein the advance of the shaft 5 or the milling tool 6 is very slow, for example about 1 mm/min.
  • the pressurized working medium immediately exits through this minimal opening and the sinus membrane 26 is immediately pushed out of the zone of danger away from the drill head and slightly detached from the jaw bone 24 , before the drill head can fully traverse the opening. This corresponds to the situation shown in FIG. 7 .
  • the milling tool is then turned off and the sinus membrane 26 is further detached as known from WO 2010/048648 in order to increase the space for the bone replacement material, for example by additional supply of pressure medium and as the case may be, by introducing vibrations.
  • the shaft 5 can remain in the through hole 101 as sealing element for the time being.
  • the shaft 5 can also be removed and the through hole 101 can be sealingly closed by inserting a stopper. This allows to further exert pressure or to maintain the pressure constant.
  • vibrations for example ultrasound vibrations
  • the guide element 100 is gripped at the nose 109 and pivotally rotated in the opposite direction indicated by the arrow in FIG. 5 .
  • a continuously increasing outer border 116 is formed, which interacts with the bottom surface 106 , forces the guide element 100 upwards during the pivoting and eventually lifts the guide element 100 out of the inlet opening 3 .
  • the guide element 100 is distributed as sterilized and aseptically packaged disposable item or medical product either by itself or combined with the tube line 111 . Just prior to starting the procedure, the surgeon or dentist can tear open the packaging and remove the guaranteed contamination-free guide element 100 and the tube unit 111 , fasten the same to the hollow body 1 and arrange the working tool correspondingly.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Otolaryngology (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Surgical Instruments (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US13/884,188 2010-11-09 2011-09-30 Fuhrungselement und vorrichtung zum einbringen einer knochenbohrung Abandoned US20130344453A1 (en)

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ATA1839/2010 2010-11-09
ATA1839/2010A AT510402B1 (de) 2010-11-09 2010-11-09 Führungselement und vorrichtung zum einbringen einer knochenbohrung
PCT/AT2011/000406 WO2012061854A1 (de) 2010-11-09 2011-09-30 Führungselement und vorrichtung zum einbringen einer knochenbohrung

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US15/391,367 Expired - Fee Related US10080625B2 (en) 2010-11-09 2016-12-27 Guide element and device for creating a hole in a bone

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EP (1) EP2637596B8 (de)
JP (1) JP5868415B2 (de)
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CN110507437A (zh) * 2019-08-23 2019-11-29 雅客智慧（北京）科技有限公司 牙科种植体窝洞制备系统及窝洞制备方法
CN112168384A (zh) * 2020-10-30 2021-01-05 深圳市速航科技发展有限公司 一种复合运动模式的根管治疗装置
CN113662691A (zh) * 2021-03-16 2021-11-19 梁光强 一种上颌窦内提升工具盒

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JP6423585B2 (ja) * 2012-10-01 2018-11-14 株式会社インプラントデント 歯科用インプラント埋設穴形成補助装置
KR101645090B1 (ko) * 2014-07-24 2016-08-12 김래회 임플란트 시술기구
KR101851521B1 (ko) 2015-09-15 2018-04-24 정재봉 위치 결정용 가이더를 구비한 오스테오톰 셋트
IL243401A (en) * 2015-12-29 2017-12-31 Zion Karmon Ben Instruments and methods for lifting Schneider membrane
CN107496041B (zh) * 2017-08-08 2020-07-31 青岛市中心医院 一种口腔种植牙可重构导板
RU186276U1 (ru) * 2018-04-13 2019-01-15 Алексей Евгеньевич Яблоков Устройство для подготовки и забора аутокостнопластического материала, содержащего пептиды памяти и обогащенного концентрированным кровяным свертком с prp-фактором, для осуществления направленной костной регенерации или восстановительной костной пластики
JP2022502099A (ja) * 2018-06-25 2022-01-11 アンジェラス インダストリア デ プロデュトス オドントロジコス エスィ/アーAngelus Industria De Produtos Odontologicos S/A 歯根管系における注入システム及びその使用方法
EP3905982B1 (de) * 2019-01-04 2024-04-17 Viax Dental Technologies LLC Zahnpräparationssystem mit seitlichen zinken zur begrenzung der dreidimensionalen bewegung
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CN114948280B (zh) * 2022-05-13 2023-02-03 四川大学 一种牙科用的钻针可变定位装置及定位方法

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US20120257936A1 (en) * 2011-04-07 2012-10-11 Marcus Abboud Depth stop
US8720037B2 (en) * 2011-04-07 2014-05-13 Marcus Abboud Method for making a dental guide channel
US20160184051A1 (en) * 2013-08-26 2016-06-30 Elos Medtech Timmersdala Ab Dental surgery device
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CN112168384A (zh) * 2020-10-30 2021-01-05 深圳市速航科技发展有限公司 一种复合运动模式的根管治疗装置
CN113662691A (zh) * 2021-03-16 2021-11-19 梁光强 一种上颌窦内提升工具盒

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AT510402A4 (de) 2012-04-15
KR101901380B1 (ko) 2018-09-27
IL226269A0 (en) 2013-07-31
CN103260542B (zh) 2017-04-05
JP2014500744A (ja) 2014-01-16
AT510402B1 (de) 2012-04-15
BR112013011569A2 (pt) 2016-08-09
ZA201303901B (en) 2018-12-19
AU2011326346B2 (en) 2016-04-21
KR20140044766A (ko) 2014-04-15
US10080625B2 (en) 2018-09-25
US20170105812A1 (en) 2017-04-20
RU2013126188A (ru) 2014-12-20
EP2637596A1 (de) 2013-09-18
AU2011326346A1 (en) 2013-06-27
JP5868415B2 (ja) 2016-02-24
WO2012061854A1 (de) 2012-05-18
CN103260542A (zh) 2013-08-21
EP2637596B1 (de) 2018-03-28
EP2637596B8 (de) 2018-05-23
IL226269B (en) 2018-05-31
RU2558451C2 (ru) 2015-08-10

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