WO2003090974A1 - Appareil adaptatif destine a introduire un dispositif filete dans une matiere telle qu'un tissu biologique - Google Patents

Appareil adaptatif destine a introduire un dispositif filete dans une matiere telle qu'un tissu biologique Download PDF

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Publication number
WO2003090974A1
WO2003090974A1 PCT/AU2003/000499 AU0300499W WO03090974A1 WO 2003090974 A1 WO2003090974 A1 WO 2003090974A1 AU 0300499 W AU0300499 W AU 0300499W WO 03090974 A1 WO03090974 A1 WO 03090974A1
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WO
WIPO (PCT)
Prior art keywords
threaded device
driving
values
sensed
shut
Prior art date
Application number
PCT/AU2003/000499
Other languages
English (en)
Inventor
Trevor C. Hearn
Karen J. Reynolds
Original Assignee
The Flinders University Of South Australia
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 The Flinders University Of South Australia filed Critical The Flinders University Of South Australia
Priority to JP2003587584A priority Critical patent/JP2005523174A/ja
Priority to EP03747068A priority patent/EP1551595A1/fr
Priority to CA002482760A priority patent/CA2482760A1/fr
Priority to AU2003227105A priority patent/AU2003227105A1/en
Publication of WO2003090974A1 publication Critical patent/WO2003090974A1/fr
Priority to US10/972,076 priority patent/US20050131415A1/en

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Classifications

    • 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
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
    • 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
    • A61B17/1613—Component parts
    • A61B17/1626—Control means; Display units
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • 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
    • 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00681—Aspects not otherwise provided for
    • A61B2017/00734—Aspects not otherwise provided for battery operated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/031—Automatic limiting or abutting means, e.g. for safety torque limiting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension

Definitions

  • This invention relates to a feedback-controlled driver, and particularly, but not exclusively, to a feedback-controlled rotary handpiece for anchoring threaded devices in material with variable properties.
  • Threaded implants are common in dental surgery for anchoring implants in the mandible or teeth. They are also common in Orthopaedic Surgery, where there are many applications in reconstructive procedures and injury repairs.
  • Bone screws are an important mechanical device used to stabilise and align bone fragments, or fix a bone plate to bone.
  • torque is applied to the screw so as to advance it into the bone until the head strikes the bone cortex or bone plate.
  • Further torque is converted into axial tension along the length ofthe screw, and compression between the fragments.
  • Over-tightening occurs when the compressive force between the head and the bone or bone plate results in failure of the threaded device or damage to the bone around the threaded device. Both scenarios result in the loss of fracture fixation and stability.
  • Over-tightening is an important issue because the optimal tightening a surgeon applies to a bone screw is an acquired skill, an intuitive feeling which is developed over years of training and experience.
  • the optimal torque which is applied depends on the patient's overall health, lifestyle and age but most importantly their bone density and strength which varies greatly between individuals.
  • One previously proposed apparatus for drilling bone and driving a screw into the bone comprises a drill and a screwdriver which is operated manually and requires that the user determine head contact by the "feel" of the screwdriver during the driving operation, and by observing the bone and the threaded device.
  • Such an apparatus requires great skill of the user in order to correctly "feel” the optimal torque, and is subject to over-tightening and thread-stripping of the host material, especially when used by inexperienced users.
  • Another type of previously proposed apparatus for tightening threaded devices into bone material is disclosed in U.S. Patent No. 4,359,906.
  • the apparatus includes a torque- limiting driver which requires a predetermined torque limit to be input to the apparatus so that it can be shut off when the predetermined torque limit is achieved.
  • any such torque or rotational angle-limiting apparatus which requires a predetermined setting is of limited use as the optimal torque (and optimal rotational angle of a threaded device) will vary greatly from case to case depending on such factors as quality of the host material, and quality and geometry of the threaded device.
  • a driver for driving a threaded device into bone is connected to an external display which provides additional feedback to the operator, but such an apparatus is limited by the constraints of connecting cables between the driver and the display, and operator attention.
  • the present invention seeks to eliminate or at least alleviate the uncertainty associated with a surgeon's intuitive feel and the actual torque he or she applies during screw insertion into a patient's bone.
  • an adaptive apparatus for driving a threaded device into material such as biological tissue
  • the apparatus including a rotating driving bit, a sensor for sensing during said driving a first quantity related to the material's properties, memory means for storing sensed values of said first quantity, and a feedback arrangement which processes the values sensed by the sensor in comparison to known data to characterise the material and to determine a shut-off condition at which safe and effective engagement of the threaded device in the material is achieved, wherein the feedback arrangement ceases rotation of said driving bit when said shut-off condition is achieved.
  • the processing ofthe values sensed by the sensor is performed continuously.
  • contact between a head ofthe threaded device and the material is automatically detected by the apparatus, and initial values of said first quantity are sensed prior to said contact. More preferably, said contact between the head of the threaded device and the material is detected by sensing said first quantity.
  • the apparatus includes a further sensor for sensing a second quantity, and subsequent values of said second quantity are stored in said memory means and are processed in combination with values of said first quantity and in comparison to known data to characterise the material and to determine said shut-off condition.
  • the apparatus includes a drill bit for drilling the material so that said threaded device can be driven into a hole formed by said drill bit.
  • the first-mentioned sensor senses said first quantity during said drilling to supplement values of said first quantity sensed during driving, and subsequent values of said first quantity sensed during said drilling are stored in said storage means during said drilling, and said feedback arrangement processes these values in comparison to known data to characterise the material and to determine said shut-off condition at which safe and effective engagement ofthe threaded device in the material is achieved.
  • the rotating driving bit is powered by a motor
  • the feedback arrangement processes the quantity or quantities sensed by the one or more sensors to control rotation of the motor to prevent over-tightening.
  • said first quantity is or is directly related to an amount of resistive torque exerted by the material on the threaded device.
  • the rotating driving bit is driven pneumatically, said first quantity is or is related to pressure, and control is effected by means of a regulator.
  • the second quantity is angular rotation of either the drilling or driving bit.
  • the first quantity may be axial force on the drilling or driving bit.
  • the second quantity may be axial displacement ofthe threaded device in the material.
  • the apparatus is self-contained and is portable in a hand-held form.
  • the threaded device is a screw.
  • the feedback arrangement characterises the material by comparing the magnitude of values of said first quantity, sensed prior to contact of the head of the threaded device on the surface ofthe material, to known data for different material types to isolate a relevant set of known data, and the shut-off condition is determined by ascertaining an expected failure threshold from the relevant set of known data and by applying a safety factor to the expected failure threshold.
  • a method of driving a threaded device into material such as biological tissue, said method including the steps of: driving the threaded device into said material by way of a rotating driving bit; sensing during said driving a first quantity related to material properties of the material; storing sensed values of said first quantity; processing the values sensed by the sensor in comparison to known data to characterise the material and to determine a shut-off condition at which safe and effective engagement ofthe threaded device in the material is achieved; and ceasing rotation of said driving bit when said shut-off condition is achieved.
  • the processing step is performed continuously.
  • said method further includes the steps of automatically detecting contact between a head of the threaded device and the surface of the material, and sensing initial values of said first quantity prior to said contact. More preferably, said method includes the step of automatically detecting contact between the head ofthe threaded device and the material by sensing said first quantity.
  • said method further includes the steps of sensing a second quantity, storing subsequent values of said second quantity, and processing values of said second quantity in combination with values of said first quantity and in comparison to known data to characterise the material and to determine said shut-off condition.
  • said method further includes the step of drilling said material so that said threaded device can be driven into a hole formed by said drilling step.
  • said method includes the steps of sensing subsequent values of said first quantity during said drilling to supplement values of said first quantity sensed during driving, storing these sensed values, and processing the values sensed during the drilling step in comparison to known data to characterise the material and to determine said shut- off condition at which safe and effective engagement ofthe threaded device in the material is achieved.
  • said first quantity is or is directly related to an amount of resistive torque exerted by the material on the threaded device.
  • said first quantity is the current of a motor operating the driving bit.
  • the rotating driving bit is driven pneumatically, said first quantity is or is related to pressure, and control is effected by means of a regulator.
  • the second quantity is angular rotation ofthe driving bit.
  • the first quantity may be axial force exerted by the material on the driving bit.
  • the second quantity may be axial displacement ofthe threaded device in the material.
  • the method further includes the steps of characterising the material by comparing the magnitude of values of said first quantity sensed prior to contact ofthe head of the threaded device on the surface of the material to known data for different material types to isolate a relevant set of known data, and determining the shut-off condition by ascertaining an expected failure threshold from the relevant set of known data and by applying a safety factor to the expected failure threshold.
  • the material is bone, hi one alternative embodiment, the material is wood. In another alternative embodiment, the material is synthetic (non-biological), hi yet a further alternative embodiment, the material is tooth material.
  • Figure 1 is a flow chart illustrating the basic components of an apparatus for driving a threaded device in accordance with the present invention
  • Figure 2 illustrates the type of signals to be detected by the apparatus of Figure 1;
  • Figure 3 is a diagrammatic side view of a portable drilling and driving handpiece of the apparatus of Figure 1, showing the arrangement ofthe internal components;
  • Figure 4 is a diagrammatic side view ofthe handpiece of Figure 3 in operation
  • FIG. 5 is a circuit diagram used in the apparatus of Figures 3 and 4;
  • Figure 6 is a graph of three example plots of Torque versus Time in tightening a 7.0mm screw to failure in polyurethane foam of density 0.3gm/cc;
  • Figure 7 is a graph of Torque versus Time in tightening a 7.0mm screw in polyurethane foam of density 0.3gm/cc, from a laboratory test of an adaptive tightening method in accordance with the present invention
  • Figure 8 is a graph of three example plots of Current versus Time in tightening a 7.0mm screw to failure in polyurethane foam of density 0.3gm/cc;
  • Figure 9 is a graph of Current versus Time in tightening a 7.0mm screw in polyurethane foam of density 0.3gm/cc, from a laboratory test of an adaptive tightening method in accordance with the present invention
  • Figure 10 is a graph of three example plots of Torque versus Time in tightening a 7.0mm screw to failure in polyurethane foam of density 0.2gm/cc;
  • Figure 11 is a graph of Torque versus Time in tightening a 7.0mm screw in polyurethane foam of density 0.2gm/cc, from a laboratory test of an adaptive tightening method in accordance with the present invention
  • Figure 12 is a graph of three example plots of Current versus Time in tightening a 7.0mm screw to failure in polyurethane foam of density 0.2gm/cc;
  • Figure 13 is a graph of Current versus Time in tightening a 7.0mm screw in polyurethane foam of density 0.2gm/cc, from a laboratory test of an adaptive tightening method in accordance with the present invention
  • Figure 14 is a graph of two example plots of Torque versus Time in tightening a bone screw to failure in cancellous bone
  • Figure 15 is a graph of Torque versus Time in tightening a bone screw in cancellous bone, from a laboratory test of an adaptive tightening method in accordance with the present invention
  • Figure 16 is a graph of two example plots of Current versus Time in tightening bone screw to failure in cancellous bone
  • Figure 17 is a graph of Current versus Time in tightening a bone screw in cancellous bone, from a laboratory test of an adaptive tightening method in accordance with the present invention.
  • Figure 18 contains two tables showing the results of further laboratory measurements testing an adaptive apparatus in accordance with the present invention in various host materials. Detailed Description of Preferred Embodiments
  • the adaptive apparatus comprises a motorised drill/driver 10 having sensors in the form of strain-gauge instrumented torque transducers 16 for detecting the amount of torque exerted by the drill/driver 10 on the bone material 12 (and thus the amount of torque exerted by the bone material 12 on the drill/driver 10).
  • the drill/driver has sensors in the form of motor current sensors 100.
  • the drill/driver 10 is also provided with sensors in the form of additional transducers 101 for detecting a rotational- angle of a removable drilling bit 20 or driving bit 22 connected to the drill/driver via a chuck 26.
  • the values of torque and rotational angle, sensed by sensors 16 and 101, respectively, are processed using signal conditioning units 105 and 104 respectively.
  • Conditioned signals representing torque 106 and rotational angle 107 are input to a microcontroller 102, and stored by memory means in the form of readable/writeable memory 24 in the microcontroller 102.
  • These conditioned signals 106 and 107 are processed by the microcontroller 102 in comparison to known experimental reference data or algorithms stored in the microcontroller 102 in order to characterise the bone material 12 in terms of qualities related to its functional density, such as qualities of stiffness and strength.
  • the known experimental data is in the form of quantitative relationships between, or algorithms relating, rotational angle, linear displacement, current, torque and screw type, and the comparison is done electronically using the microcontroller 102 with suitable software.
  • the known experimental data or algorithms may be updated by replacing the software loaded into the microcontroller 102, or by uploading updated data or algorithms used by the software.
  • the signal conditioning units 105 may be in the form of a specific component known as an Analog Devices 1B31, and the microcontroller 102 may be in the form of a Microchip PIC18F452.
  • the approach of contact of the head 15 of the threaded device 14 with the surface of the bone material 12 is determined by the microcontroller 102 from the conditioned rotational angle 107 and screw type 110 data.
  • Contact of the head 15 of the threaded device 14 on the bone material 12 is automatically detected by measuring the change in gradient of the torque curve using the microcontroller 102, as illustrated by "HC" (referring to Head Contact) in the examples shown in Figures 7, 11 and 15.
  • the processing is performed continuously, and the characterising of the bone material 12 is continuously updated.
  • the characterising of the bone material 12 is used to determine a shut-off condition at which safe and effective engagement ofthe threaded device 14 in the particular bone material 12 is achieved, the shut-off condition being in the form of a torque threshold value.
  • the shut-off condition may be in the form of a rotational angle threshold value, or a relationship between torque and rotational angle.
  • a feedback arrangement 32 is used to process the values of torque and rotational angle by way ofthe microprocessor 102 to calculate a dynamic torque value and a dynamic first derivative of torque with respect to rotational angle, and to compare this dynamic torque value and dynamic first derivative with the shut-off criterion and a head contact criterion, respectively.
  • a control system in the form of electronic circuitry containing a semiconductor switch 111 (for example a Motorola 2N3055A component) shuts off the power supply from the battery pack 36 to the drill/driver 10 to prevent over-tightening of the threaded device 14 within the bone material 12.
  • a semiconductor switch 111 for example a Motorola 2N3055A component
  • the sensed quantity is motor current 103 detected by a current sensor 100.
  • the current signal is used in the same way as the torque signal described in the above- described embodiment.
  • Contact of the head 15 of the threaded device 14 on the bone material 12 may be automatically detected by measuring the change in gradient of the current curve using the microcontroller 102, as illustrated by "HC" (referring to Head Contact) in the examples shown in Figures 9, 13 and 17.
  • the driving device is pneumatic
  • the sensed quantity is or is related to pressure
  • the shutoff condition is applied to a pneumatic regulator.
  • the host material is bone material
  • the host material may take other forms, such as the polyurethane foam as used in the experiments conducted to obtain the data represented in Figures 6 to 13.
  • FIG. 6-17 The process of adaptive tightening is illustrated with reference to Examples 1-6 shown in Figures 6-17.
  • Figures 6, 7, 10, 11, 14 and 15 show signals from a torque transducer in relation to time, as a threaded device is driven into host material, over three different experimental threaded device/host material combinations.
  • Figures 8, 9, 12, 13, 16 and 17 illustrate the same experimental combinations using current rather than torque.
  • Six materials have been tested: polyurethane foam of two densities (0.2 and 0.3 gm/cc), cancellous bone (0.9 gm/cc), cortical bone (2 gm/cc), balsawood and meranti.
  • Figures 6 and 10 show examples of the known torque reference data stored on the microprocessor 102 for polyurethane foam of two densities: 0.2 and 0.3 gm/cc. The data from three trials of overtightening a 7.0 mm cancellous screw to failure ofthe host material is shown for each of the two densities.
  • the torque curves 38 have characteristic features: (i) Ti, torque values in an initial region 40 of the torque curve 38 prior to contact of the head 15 ofthe threaded device 14 on the surface ofthe host material 12; (ii) HC (reference numeral 42), a sharp steepening ofthe torque curve 38 corresponding to engagement ofthe head 15 of the threaded device 14 with the surface of the host material 12; and (iii) Tmax (reference numeral 44), a peak torque value corresponding to failure of the sample host material 12 around the threaded device 14 thread.
  • Ti values ranging between 0.15 and 0.18 correspond to Tmax values between 0.6 and 0.75.
  • Ti values between 0.03 and 0.06 correspond to Tmax values between 0.28 and 0.3.
  • Figure 14 shows an example of known torque reference data stored on the microprocessor 102 for cancellous bone of density 0.9 gm/cc, having Ti values ranging between approximately 0.1 - 0.3, and Tmax values of 0.5 and 1 for the two curves 38a,38b shown.
  • Figures 7, 11 and 15 illustrate the actual adaptive tightening in the three materials from Figures 6, 10 and 14, using the data represented in Figures 6, 10 and 14 as reference data stored in the microprocessor 102.
  • the rotation signal together with the screw pitch identifies the region Ti prior to head contact.
  • Processed torque values taken during driving ofthe threaded device 14 into the host material 12, represented by plots 46, are compared with the stored reference torque data stored in the microprocessor represented by torque curves 38 of Figures 6, 10 and 14.
  • Torque values Ti taken in the initial region of torque measurement 48 prior to contact ofthe head 15 ofthe threaded device 14 on the surface of the host material 12 of approximately 0.17 in Figure 7 identify the material used as being 0.3 gm/cc foam by comparison with the torque reference data stored on the microprocessor 102, and in particular by comparison with the torque reference data represented by the torque curves 38 of Figure 6.
  • a safe shutoff condition in the form of a shutoff torque threshold is determined by using the known torque reference data for this material (ie. the data shown in Figure 6 in the present example) by calculating the interval corresponding to between 1/3 and 2/3 of the range between Ti and Tmax of Figure 6, and this shutoff condition is targeted.
  • shutoff torque threshold for 0.3 gm/cc foam corresponds to a range of processed values of torque of approximately 0.4 to 0.6.
  • the final value of torque obtained Topt is approximately 0.5, and is within the shutoff torque threshold range calculated.
  • Software stored on the microprocessor 102 continuously calculates the dynamic slope of the processed torque values, as represented by plot 46, with respect to time, by numerical differentiation.
  • a rapid increase in slope identifies contact of the head 15 of the threaded device 14 with the surface of the material 12, ie. head contact (HC) as indicated by reference numeral 50. This activates a condition of the system wherein the shutoff torque threshold has been determined and is sensed for until achieved.
  • the first sensed quantity is torque and the second sensed quantity is cu ⁇ ent.
  • both torque and current data may be used to characterise the host material, to determine the shut-off condition, and to control ceasing of rotation ofthe driving bit.
  • the results of further laboratory measurement in host materials of cortical bone, hardwood (meranti) and balsawood, using torque and current, are summarised in Figure 18 in Tables 1 and 2, respectively.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Surgical Instruments (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne un appareil adaptatif destiné à introduire par perçage un dispositif fileté dans une matière telle qu'un tissu biologique, cet appareil comprenant un foret de perçage rotatif, un détecteur destiné à détecter une première quantité associée aux propriétés de cette matière, une unité de mémoire servant à stocker les valeurs détectées de cette première quantité, ainsi qu'un dispositif de rétroaction traitant les valeurs détectées par le détecteur en comparaison avec des données connues afin de caractériser la matière et de déterminer une condition d'arrêt permettant une introduction sûre et efficace du dispositif fileté dans cette matière. Le dispositif de rétroaction interrompt la rotation du foret de perçage lorsque cette condition d'arrêt est atteinte. Dans un autre mode de réalisation, l'invention concerne un procédé destiné à introduire par perçage un dispositif fileté dans une matière telle qu'un tissu biologique, ledit procédé consistant à introduire par perçage le dispositif fileté dans ladite matière au moyen d'un foret de perçage rotatif, à détecter une première quantité associée aux propriétés de cette matière, à stocker les valeurs détectées de cette première quantité, à traiter les valeurs détectées par le détecteur en comparaison avec des données connues en vue de caractériser la matière et de déterminer une condition d'arrêt permettant une introduction sûre et efficace du dispositif fileté dans ladite matière, puis à interrompre la rotation du foret de perçage lorsque cette condition d'arrêt est atteinte.
PCT/AU2003/000499 2002-04-24 2003-04-24 Appareil adaptatif destine a introduire un dispositif filete dans une matiere telle qu'un tissu biologique WO2003090974A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2003587584A JP2005523174A (ja) 2002-04-24 2003-04-24 生体組織などの部材の中にねじ式デバイスを回すための適応装置
EP03747068A EP1551595A1 (fr) 2002-04-24 2003-04-24 Appareil adaptatif destine a introduire un dispositif filete dans une matiere telle qu'un tissu biologique
CA002482760A CA2482760A1 (fr) 2002-04-24 2003-04-24 Appareil adaptatif destine a introduire un dispositif filete dans une matiere telle qu'un tissu biologique
AU2003227105A AU2003227105A1 (en) 2002-04-24 2003-04-24 Adaptive apparatus for driving a threaded device into material such as biological tissue
US10/972,076 US20050131415A1 (en) 2002-04-24 2004-10-21 Adaptive apparatus for driving a threaded device into material such as a biological tissue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPS1951 2002-04-24
AUPS1951A AUPS195102A0 (en) 2002-04-24 2002-04-24 Adaptive apparatus for driving a threaded device into material such as biological tissue

Related Child Applications (1)

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US10/972,076 Continuation US20050131415A1 (en) 2002-04-24 2004-10-21 Adaptive apparatus for driving a threaded device into material such as a biological tissue

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WO2003090974A1 true WO2003090974A1 (fr) 2003-11-06

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EP (1) EP1551595A1 (fr)
JP (1) JP2005523174A (fr)
AU (1) AUPS195102A0 (fr)
CA (1) CA2482760A1 (fr)
WO (1) WO2003090974A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
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JP2007519479A (ja) * 2004-01-30 2007-07-19 ウォーソー・オーソペディック・インコーポレーテッド 器具類を最小化するように設計された解剖学的インプラントおよび外科的手技
WO2009061590A1 (fr) * 2007-11-05 2009-05-14 The Boeing Company Système combiné marquage et clé
EP2128734A1 (fr) * 2007-02-16 2009-12-02 Positec Power Tools (Suzhou) Co., Ltd. Procédé de commande d'un outil électrique et outil électrique réalisant le procédé de commande
US7704282B2 (en) * 2003-07-11 2010-04-27 Depuy Products, Inc. Orthopaedic element with self-contained data storage
EP2380704A1 (fr) * 2009-01-04 2011-10-26 Positec Power Tools (Suzhou) Co., Ltd. Procédé de commande pour un outil électrique et outil électrique qui exécute le procédé de commande
CN103976772A (zh) * 2014-05-27 2014-08-13 梁红所 自动停转式骨钻
US10206731B2 (en) 2013-07-19 2019-02-19 Pro-Dex, Inc. Torque-limiting screwdrivers
US10383674B2 (en) 2016-06-07 2019-08-20 Pro-Dex, Inc. Torque-limiting screwdriver devices, systems, and methods
US11090128B2 (en) 2018-08-20 2021-08-17 Pro-Dex, Inc. Torque-limiting devices, systems, and methods
US11279008B2 (en) 2018-07-05 2022-03-22 Stryker European Operations Holdings, LLC Automatic screw driver with screw cartridge

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WO2008052367A1 (fr) * 2006-10-31 2008-05-08 Ao Technology Ag Procédé et dispositif servant à mesurer la résistance mécanique locale d'un corps poreux
JP5775480B2 (ja) * 2012-03-27 2015-09-09 トヨタ自動車株式会社 ネジ締付方法及びネジ締付装置
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US7704282B2 (en) * 2003-07-11 2010-04-27 Depuy Products, Inc. Orthopaedic element with self-contained data storage
JP2007519479A (ja) * 2004-01-30 2007-07-19 ウォーソー・オーソペディック・インコーポレーテッド 器具類を最小化するように設計された解剖学的インプラントおよび外科的手技
US8881842B2 (en) 2007-02-16 2014-11-11 Positec Power Tools (Suzhou) Co., Ltd. Controlling method of electric tool and electric tool carrying out the controlling method
EP2128734A1 (fr) * 2007-02-16 2009-12-02 Positec Power Tools (Suzhou) Co., Ltd. Procédé de commande d'un outil électrique et outil électrique réalisant le procédé de commande
JP2015027733A (ja) * 2007-02-16 2015-02-12 ▲そ▼州宝▲し▼得▲でん▼▲どう▼工具有限公司 電気工具の制御方法及びこれを実行する電気工具
EP2128734A4 (fr) * 2007-02-16 2013-11-13 Positec Power Tools Suzhou Co Procédé de commande d'un outil électrique et outil électrique réalisant le procédé de commande
WO2009061590A1 (fr) * 2007-11-05 2009-05-14 The Boeing Company Système combiné marquage et clé
EP2380704A1 (fr) * 2009-01-04 2011-10-26 Positec Power Tools (Suzhou) Co., Ltd. Procédé de commande pour un outil électrique et outil électrique qui exécute le procédé de commande
EP2380704A4 (fr) * 2009-01-04 2013-10-30 Positec Power Tools Suzhou Co Procédé de commande pour un outil électrique et outil électrique qui exécute le procédé de commande
US9162331B2 (en) 2009-01-04 2015-10-20 Positec Power Tools (Suzhou) Co. Ltd. Electric tool and controlling method thereof
US10206731B2 (en) 2013-07-19 2019-02-19 Pro-Dex, Inc. Torque-limiting screwdrivers
CN103976772A (zh) * 2014-05-27 2014-08-13 梁红所 自动停转式骨钻
CN103976772B (zh) * 2014-05-27 2016-03-23 梁红所 自动停转式骨钻
US10383674B2 (en) 2016-06-07 2019-08-20 Pro-Dex, Inc. Torque-limiting screwdriver devices, systems, and methods
US11071575B2 (en) 2016-06-07 2021-07-27 Pro-Dex, Inc. Torque-limiting screwdriver devices, systems, and methods
US11890144B2 (en) 2016-06-07 2024-02-06 Pro-Dex, Inc. Torque-limiting screwdriver devices, systems, and methods
US11279008B2 (en) 2018-07-05 2022-03-22 Stryker European Operations Holdings, LLC Automatic screw driver with screw cartridge
US11090128B2 (en) 2018-08-20 2021-08-17 Pro-Dex, Inc. Torque-limiting devices, systems, and methods
US11882991B2 (en) 2018-08-20 2024-01-30 Pro-Dex, Inc. Torque-limiting devices, systems, and methods

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JP2005523174A (ja) 2005-08-04

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