EP2299909A1 - Vorrichtung zum bestimmen der stabilität eines kniegelenks - Google Patents
Vorrichtung zum bestimmen der stabilität eines kniegelenksInfo
- Publication number
- EP2299909A1 EP2299909A1 EP09768946A EP09768946A EP2299909A1 EP 2299909 A1 EP2299909 A1 EP 2299909A1 EP 09768946 A EP09768946 A EP 09768946A EP 09768946 A EP09768946 A EP 09768946A EP 2299909 A1 EP2299909 A1 EP 2299909A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- knee joint
- lower leg
- stability
- measuring sensor
- sensor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 134
- 238000012545 processing Methods 0.000 claims abstract description 58
- 230000001133 acceleration Effects 0.000 claims abstract description 42
- 238000005259 measurement Methods 0.000 claims abstract description 39
- 210000001699 lower leg Anatomy 0.000 claims description 95
- 210000000689 upper leg Anatomy 0.000 claims description 35
- 210000004417 patella Anatomy 0.000 claims description 10
- 230000010354 integration Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 235000015243 ice cream Nutrition 0.000 claims 1
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 43
- 238000002405 diagnostic procedure Methods 0.000 description 20
- 238000004364 calculation method Methods 0.000 description 7
- 206010065433 Ligament rupture Diseases 0.000 description 6
- 210000002414 leg Anatomy 0.000 description 6
- 210000003041 ligament Anatomy 0.000 description 6
- 210000002303 tibia Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 210000000838 condylus lateralis tibialis Anatomy 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 210000003127 knee Anatomy 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 208000005137 Joint instability Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000001264 anterior cruciate ligament Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000011326 mechanical measurement Methods 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 210000001698 popliteal fossa Anatomy 0.000 description 1
- 210000002967 posterior cruciate ligament Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1121—Determining geometric values, e.g. centre of rotation or angular range of movement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1071—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring angles, e.g. using goniometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1124—Determining motor skills
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4528—Joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6828—Leg
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0219—Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6831—Straps, bands or harnesses
Definitions
- the invention relates to a device for determining the stability of a knee joint with at least one non-contact measuring sensor.
- the cruciate ligaments of the human knee joint stabilize the femur (femur) against the tibia (tibia). Like all ligaments in the human body, they can only absorb tensile forces. To stabilize the knee joint, there are therefore two cruciate ligaments that run in opposite directions.
- the anterior cruciate ligament is severed during a cruciate ligament rupture (cruciate ligament tear)
- it can no longer absorb any tensile forces.
- the posterior cruciate ligament can not absorb compressive forces, the knee joint becomes unstable.
- it is possible to move the tibia by pulling further in the "forwards" direction with respect to the femur than is possible with a healthy knee joint.
- Methods for studying the stability of a knee joint are mainly used for pre- and postoperative diagnostics in the context of the treatment of cruciate ligament ruptures.
- the knee joint to be diagnosed is held at a flexion angle of the knee joint of about 30 ° in a lying patient, and the therapist grasps the lower leg with both hands in such a way that both of his index fingers are in the popliteal fossa He pulls his lower leg forward and, depending on how the lower leg is displaceable with respect to the thigh, a partial rupture or a complete rupture of the cruciate ligament can be diagnosed.
- the front drawer test differs from the Lachmann test mainly in that the knee joint to be diagnosed is examined at a flexion angle of about 90 ° the postponement between the thigh and lower leg is called “drawer travel” designated ⁇ net.
- the so-called “pivot shift test” which is also known as a spin-slip test or subluxation test, is used to diagnose the knee joint in the event of a suspected tear or anterior injury.
- the Pivot Shift Test is also used for therapy after a novel "double-bundle operation" due to a cruciate ligament rupture, in which the rotational stability of the knee joint is restored.
- the therapist presses the lower leg of the patient lying down with one hand downwards while performing an internal rotation of the lower leg.
- the test is considered positive if the upper tibial plateau (tibialis) slips backward.
- the therapist perceives a sudden snapping, in which the lateral femoral condyle protrudes forward in relation to the lateral tibial condyle. This phenomenon is also partly visible from the outside.
- Lachmann, front-drawer or pivot-shift tests performed by a therapist have the disadvantage that the examination results are purely subjectively dependent on the therapist's assessment and on his experience.
- the Lachmann test described above is verified using a knee-holding device and an X-ray machine.
- this method has the disadvantage that a significant radiation exposure for the patient occurs.
- Magnetic resonance tomography is also used to verify the diagnostic procedures. Magnetic resonance tomographs are, however, usually too expensive for routine diagnostics in small surgical ambulances or practices and require considerable space and technical effort.
- arthro- meters devices for instrumental measurement, so-called arthro- meters, are used to determine the stability of a knee joint with the aid of the Lachmann test known.
- a manually applied force for ventral translation of the tibia is mechanically exerted compared to the patella of the knee joint.
- the measurement results are determined purely mechanically using the device and displayed on scales.
- the use of such devices is partial
- US Pat. No. 4,583,555 relates to a device for mechanical measurement of the displaceability of a lower leg relative to the associated knee joint in the Lachmann test.
- the document US 4,649,934 relates to a device for measuring the mobility of a knee joint comprising a dental chair with a built 20 force gauge.
- the document DE 39 25 014 A1 relates to a device for testing the stability of a knee joint with a holding device comprising two articulated sub-plates and a computer-aided ultrasound device, which is pressed into the soft parts of a clamped knee joint.
- the document DE 197 01 838 A1 relates to a device for determining the stability of a knee joint with two distance sensors designed as linear potentiometers.
- Document DE 36 36 843 A1 relates to a device for determining the stability of a knee joint comprising a chair with a seat surface that is deeply recessed to fix the pelvis.
- a device for determining the stability of a knee joint with a measuring sensor, which can be attached via a fastening device to a knee joint associated lower leg, wherein the measuring sensor for measuring an acceleration in at least one direction at a
- Movement of the lower leg is formed, and wherein a processing device for processing measured values of the measuring sensor is provided to close from the processed measurements on the stability of the knee joint.
- a statement as to the stability of the knee joint can be made by means of the only one measuring sensor, which is attached to a knee joint associated with the lower leg via a fastening device, and the processing device for processing the measured values of the measuring sensor to be hit.
- This simple structure with only a few components, the handling of the device is much easier.
- the therapist does not have to manipulate any element of the device and thus has his or her hands free for the diagnostic procedure.
- the processing device for processing measured values of the measuring sensor can be a computer having a computer program for evaluating the measurement results, a storage device for storing the measurement results and a display for displaying the measurement results and evaluating the measurement results.
- the measuring sensor for measuring an acceleration and / or angular velocity in at least one direction during a movement of the lower leg is preferably an inertial sensor.
- An inertial sensor determines orientation and position changes based on an inertial navigation system (INS). In this case, the eige ⁇ ne location, position and speed of the sensor is determined without a reference to the external environment is required.
- the inertial sensor may include acceleration sensors and gyroscopes, so-called gyroscopes, for all three spatial directions.
- the rotation rate sensors determine angular velocities about a rotation axis during a movement.
- the inertial sensor can determine the accelerations in three spatial directions and the angular velocities around three spatial axes. From the determined acceleration and angular velocity values, a position change of the inertial sensor can be calculated.
- Inertial sensors have the advantage that they are robust, do without infrastructure or reference values and are insensitive to shadowing and interference.
- the at least one direction during a movement of the lower leg is preferably a direction of movement of the lower leg during flexion and extension of the knee joint and a direction substantially perpendicular to the extension direction of the lower leg.
- the direction may be a direction of movement of the lower leg in the Lachmann test.
- a length of the path of movement of the lower leg can be determined by calculation with the aid of double integration of the acceleration value.
- the movement path may in particular be the initially defined drawer path.
- the integration of the acceleration values can take place from a certain acceleration value. This can be advantageous in order to exclude from the evaluation acceleration which can not be attributed to the diagnostic procedure.
- a value of the acceleration and a reference value processing o ⁇ beitungsvoriques may determine a flexion angle of the knee joint.
- the reference value may be, for example, a flex angle of 180 ° with the leg extended.
- the flexion angle it can be assumed that the patient lies on a horizontal plane, for example a couch, when the knee is bent.
- the calculation can also be based on the fact that the lower leg and the thigh have the same length. So can about that between the thigh, lower leg and bearing surface formed equilateral triangle of flexion angle of the knee joint can be calculated.
- Such a calculation of the flexion angle of the knee joint eliminates the need for a separate determination of the flexion angle with a manual angle measuring device during the execution of a diagnostic procedure.
- the Lachmann or the Pivot Shift test must be performed at certain flexion angles of the knee joint.
- the therapist may be constantly, i. During the diagnosis, and without any additional measures, monitor whether the knee joint is bent at the desired angle or adjust the flexion angle of the knee joint accordingly.
- the calculated or stored in the processing device flexion angle can also be used in a later evaluation of the measurement results to distinguish between different performed at the knee joint diagnostic procedures, such as a transition from Lachmann to pivot-shift test.
- the processing device may be further configured to determine extremes of a plurality of acceleration values as the lower leg moves. From the extremes of the acceleration values can be inferred in particular in the pivot-shift test for instability of the knee joint. Experiments have shown that especially from the acceleration peaks, characteristics of an unstable knee joint, especially when compared with a healthy knee joint, can be recognized.
- the processing device may also be configured to determine a rotational angle of the lower leg during a rotational movement of the lower leg.
- the angular velocity can be determined with a rotation of the lower leg by means of a rotation rate sensor or a gyroscope of the measuring sensor and calculated by simple integration of the angular velocity of the rotation angle.
- the determination of the angle of rotation of the lower leg can be used in particular in the pivot shift test to determine whether the lower leg has been rotated to a desired angle of rotation. It is also conceivable that the angular velocity and / or the angular acceleration during a rotational movement of the lower leg in the processing device to evaluate or to calculate and display in order to draw conclusions about the rotational stability of the knee joint can.
- the device for determining the stability of a knee joint may further comprise a second measuring sensor, which can be attached to a knee joint associated thigh via a second fastening device, wherein the second measuring sensor is designed to measure an acceleration in at least one direction during a movement of the thigh.
- the second measuring sensor may also be an inertial sensor.
- an even more accurate determination of the stability of the knee joint is possible on account of the additional acceleration or angular velocity values.
- the second measuring sensor can determine accelerations in three spatial directions and angular velocities about three spatial axes. These measurements can be used by the knee joint stability analyzer.
- an even more accurate determination of the flexion angle of the knee joint can be carried out than with only one measuring sensor, in which the calculation of the flexion angle takes into account a reference value.
- the object of the present invention is also achieved by a device for determining the stability of a knee joint with a contactless measuring sensor which can be attached to a lower leg associated with the knee joint via a fastening device, wherein the non-contact measuring sensor measures a distance between the non-contact Measuring sensor and a reference point in a movement of the lower leg is formed, and wherein a processing device for processing measured values of the measuring sensor is provided to close from the processed measurements on the stability of the knee joint.
- the use of a non-contact measuring sensor for measuring a distance has the advantage that a device for determining the stability of a knee joint can be provided with a simple structure, which simplifies the handling of the device.
- the non-contact measuring sensor may comprise a laser sensor, an ultrasonic sensor and / or an infrared sensor.
- Such non-contact measuring sensors have the advantage that only the sensors and no essential additional components for distance measurement are necessary. This reduces the complexity of the device.
- the reference point can be located on the knee joint to be examined. Preferably, the reference point is located centrally on the kneecap of the knee joint. The reference point can also be located on the upper part of the knee joint! or on the treatment table.
- the position of the lower leg or the tibia with the non-contact measuring sensor fixedly attached thereto is relative to the stationary knee joint, i. As the kneecap changes, so does the distance between the non-contact measurement sensor and the reference point. Consequently, the distance between the measuring sensor and the reference point can be determined in a simple and precise manner with the aid of the contactless measuring sensor.
- the attachment device is preferably designed to position the non-contact measurement sensor a short distance above the knee joint, i. especially the kneecap, or the knee joint associated thigh holds. As a result, the distance between the measuring sensor and the reference point during a movement of the thigh, for example in the Lachmann or the pivot shift test, can be determined.
- the fastening device extends substantially parallel to the running direction of the lower leg. This embodiment is advantageous because in most diagnostic methods, such as the Lachmann or the pivot shift test, the lower leg is moved and the Befest Trentsvorrich ⁇ tion thus parallel to the movement of the lower leg follows.
- the fastening device comprises at least one retaining shell with closure means for fastening the retaining shell to the lower leg.
- closure means for fastening the retaining shell to the lower leg.
- the fastening device comprises two holding shells, which can be fastened by means of closure means on the lower leg. Since the anatomy of different lower legs differs, the closure means is preferably designed such that the holding cup can be fixedly attached to it regardless of the shape of the lower leg.
- the measured values of the measuring sensors are transmitted wirelessly, by cable or via a storage medium to the processing device. Since the therapist must grasp the lower leg or thigh when carrying out the diagnostic procedures, a connection via cable between the measuring sensor and the processing device would complicate the implementation of the diagnostic procedures.
- the measuring sensor preferably measures a plurality of measured values over time.
- the plurality of measured values over time are transmitted to and evaluated by the processing device.
- a statement regarding the stability of the knee joint can be made, in particular in the case of the Lachmann or the pivot shift test.
- the measured values over time can be used for a comparison of the knee to be diagnosed with a healthy knee joint.
- the processing device forms an average of the measured values over a predetermined time interval. By the averaging can be suppressed measurement errors. Other smoothing methods can also be used.
- the movement of the lower leg is preferably a translatory and / or a rotational movement of the lower leg.
- the device is further configured to determine the translational stability in a sagittal plane and / or the rotational stability about an axis in the horizontal plane of the knee joint.
- the device according to the present invention is thus able to determine both a translational stability of the knee joint, for example in the Lachmann test, and a rotational stability of the knee joint, for example in the pivot shift test. Consequently, according to the present invention, only one device is necessary for carrying out a plurality of diagnostic methods on a knee joint.
- a system for determining the stability of a knee joint with a device for determining the stability of a knee joint with a measuring sensor for measuring an acceleration in at least one direction during a movement of the lower leg and a device for determining the stability of a knee joint a non-contact measuring sensor, for example a laser sensor solved.
- a non-contact measuring sensor for example a laser sensor solved.
- one of the devices may be used as a reference measuring device for the other device.
- One of the devices can also be used to calibrate the other devices.
- the measurement results of the two devices can be compared in order to make a statement regarding the accuracy of a device can.
- FIG. 1 shows a schematic representation of a device according to the invention for determining the stability of a knee joint with an inertial sensor
- Figure 2 is a schematic representation of the measuring directions on a thigh and a lower leg
- FIG. 3 a schematic representation of a device 5 according to the invention for determining the stability of a knee joint with two inertial sensors
- Figure 4 is a schematic representation of an inventive device for determining the stability of a knee joint with a laser sensor.
- the present invention is not limited to use in the Lachmann or Pivot Shift test.
- the present invention can be used in any diagnostic method in which the lower leg and / or the upper leg is moved.
- FIG. 1 shows a schematic representation of a human leg with a device according to the invention for determining the stability of a knee joint. With the device shown, both the translational stability and the rotational stability of a knee joint can be determined.
- the leg comprises a thigh 10, a knee joint 11 to be diagnosed and a lower leg 12.
- An inertial sensor 14 is fastened to the lower leg 12 by means of a fastening device 16. Furthermore, a processing device 18 is provided for processing the measured values of the inertial sensor 14.
- the processing device 18 comprises a display 20, a storage device 22 o and a processing logic 24.
- the lower leg 12 In the Lachmann test, the lower leg 12 is moved in the direction z relative to the thigh 10. The acceleration of the movement of the lower leg 12 in the direction z is measured by the inertial sensor 14 and the measured values are transmitted to the processing device 18 by cable or wirelessly. The path of movement of the lower leg 12 relative to the thigh 10 is the drawer path. In the pivot shift test, the lower leg 12 is rotated in the direction of rotation v and bent. The inertial sensor 14 determines the angular velocity of the rotation. The measured values are transmitted from the inertial sensor 14 to the processing device 18. Further acceleration and angular velocity values may be measured by the inertial sensor 14 and transmitted to the processing device 18. In order not to hinder the implementation of the diagnostic methods, the measured values are transmitted wirelessly from the inertial sensor 14 to the processing device 18.
- the received measured values are stored in the memory device 22 and processed by a processing logic 24.
- the processing logic 24 determines, with the aid of a two-fold integration of the measured acceleration values, the displacement path traveled by a movement of the lower leg 12 relative to the thigh 10 and the knee joint 11, respectively. Due to the displacement path, it can be concluded in the Lachmann test whether a translational instability of the knee joint is present.
- the movement of the lower leg 12 can be both a translatory and a rotational movement of the lower leg 12.
- a rotational instability of the knee joint 11 can be inferred.
- the sudden snap in the pivot shift test in which the lateral femoral condyle jumps forward with respect to the lateral tibial condyle, is evident from a sudden change in acceleration and acceleration and sudden rotation.
- the processing logic 24 may also determine the angle of rotation during a rotation of the lower leg 12 by simply integrating the angular velocity value.
- the rotation angle can be displayed in the display 22 during the execution of Diagnostizier ⁇ procedure so that it provides an aid in rotation of the leg 12 during the execution of the pivot-shift tests the therapist.
- the processing logic 24 can also determine the bending angle ⁇ of the knee joint 11 between the Calculate thigh 11 and lower leg 12.
- the calculation can take into account an initial angle ⁇ of 180 ° with an extension of the knee joint 11 and the substantially same length of thigh 10 and lower leg 12.
- the calculation can be made by assuming an equilateral triangle in which the thigh 10 and the lower leg 12 form the same sides of the triangle.
- All measured and calculated values are stored in the memory device 22 along with a timestamp. All values can also be displayed in the lo display 20.
- the therapist may, during the performance of the diagnostic procedure, determine whether the knee joint is flexed at the flexion angle recommended for the particular test.
- the measurements displayed on the display 20 can be analyzed over time. Thus, it can also be determined from maximum acceleration values whether the rotational stability of the knee joint 11 is impaired. This determination can also be made automatically by the processing logic 24. In order to simplify the illustration of the analysis results or to reduce measurement errors, the processing logic 24 can furthermore perform averaging of the measured values.
- the measurements can be performed both on the knee joint to be diagnosed and on the other (healthy) knee joint.
- the measured values of the two knee joints are stored in the storage device 22, processed by the processing logic 24 and then displayed in the display 20 for comparison.
- the therapist can easily determine whether the knee joint to be diagnosed is unstable. 5
- the processing logic 24 can also be designed such that it automatically analyzes the measured values and notifies the therapist via the display 20 whether a Instability of the knee joint is present or to what degree the knee joint is unstable.
- the inertial sensor 14 is fixedly connected to the fastening device 16.
- the inertial sensor 14 can be attached directly or via a connecting element (not shown) to the fastening device 16.
- the fastening device 16 comprises one or two shell elements (not shown) which can be fixedly attached to the lower leg by means of a tightenable crepe or hook and loop fastener (not shown). Due to the fixed connection of the fastening device 14 to the lower leg 12, it is ensured that the inertial sensor 14 does not deliver false measurement results due to proper movements.
- the fastening device 16 may also comprise a Velcro tape to which the inertial sensor 14 is attached.
- FIG. 2 shows a schematic representation of the measurable variables and measuring directions determinable on a thigh and a lower leg.
- FIG. 2 shows the coordinates of an inertial navigation system, in each case on the lower leg 12 and the thigh 10.
- the accelerations in the directions Xi, yi and Zi can be determined. Furthermore, the inertial sensor can determine the angular velocities in the rotational directions ⁇ i, ⁇ i and Y 1 .
- the inertial sensor may include three accelerometers and three gyroscopes.
- the same measured values, ie accelerations in the directions X 2 , y 2 and z 2 and angular velocities in the directions of rotation ⁇ 2 , ⁇ 2 and ⁇ 2 can also be determined with the aid of another inertial sensor (not shown) attached to the thigh 10. All measured values determined by the inertial sensors can be transmitted to the processing device 18 shown in FIG. 1 and further processed there.
- the embodiment according to FIG. 3 shows a schematic representation of a device according to the invention for determining the stability of a knee joint with two inertial sensors.
- the embodiment according to FIG. 3 differs from the embodiment according to FIG. 1 in that a second inertial sensor 28 is provided.
- the same elements have the same reference numerals in FIGS. 1 and 3, and it will be omitted below to describe these elements again.
- the second inertial sensor 28 is fixedly attached to the thigh 10 by means of a fastening device 30.
- the inertial sensor 28 corresponds to the inertial sensor 14 and measures acceleration values and angular velocities during an i5 translational and / or rotational movement of the lower leg 12, which also has effects on the movement of the thigh 10.
- the inertial sensor 28 transmits its measured values wirelessly to the processing device 18.
- the processing logic 24 prepares
- the memory device 22 stores the measured values and the display 20 displays the processed measured values.
- the fastening device 30 for fastening the second inertial sensor 28 to the thigh 10 may be formed just like the fastening device 16 for fastening the first inertial sensor 14.
- the fastening device 16 is attached to the lateral and / or medial tibial plateau and the medial tibial shaft.
- the attachment device 30 [Ri] is preferably attached laterally and / or medially above the condyles.
- FIG. 4 shows a schematic representation of a device according to the invention for determining the stability of a knee joint 11 with a laser sensor 40, which is attached to the lower leg 12 via a fastening device 16, 42, 44.
- the same elements as in FIG. 1 are again identified by the same reference symbols, and a description of these elements will be omitted below.
- the laser sensor 40 is provided for determining a distance a between the laser sensor 40 and a reference point. In particular, the distance a during a movement of the lower leg 12 is determined.
- the i5 reference point is the kneecap of the knee joint 11.
- the laser sensor 40 is fixedly attached to the lower leg 12 by means of two holding struts 42, 44 arranged substantially at right angles to one another and two holding shells 16 placed around the lower leg 12.
- the support strut 42 is here
- the retaining strut 44 extends substantially parallel to the extension direction of the lower leg 12. At one end of the retaining strut 44 of the laser sensor 40 is attached. With the aid of the fastening device 16, 42, 44, the laser sensor 40 is fixed in a small
- the small distance a may initially be about 10 cm apart.
- the measured values of the distance a between the laser sensor 40 and the kneecap of the knee joint 11 are wirelessly transmitted 46 from the laser sensor 40 to the processing device 18.
- the 35 measured values are processed by the processing logic 24, stored in the storage device 22 and displayed by the display 20.
- the measurement can also take place during a rotation of the lower leg 12, for example in the pivot shift test.
- a rotation instability can also be detected.
- the sudden snap in the pivot shift test in which the lateral femoral condyle jumps forward in relation to the lateral tibial condyle, can be recognized from a sudden change in the measured values, ie the distance a.
- the measurements can be performed on the knee to be diagnosed and the other. Measured values stored in the memory device 22 can then be compared and evaluated. In particular, the measurements may be displayed in an opposing manner in the display 20.
- the processing device 18 can also be designed such that it automatically analyzes the measured values and notifies the therapist on the display 20 whether instability of the knee joint exists or to what degree the knee joint is unstable.
- the present invention is not limited to laser sensors.
- any type of non-contact measuring sensors such as e.g. Ultrasonic sensors or infrared sensors are used.
- Use of cameras, markers, potentiometers, magnetic field sensors, strain gauges, liquid displacement measurement, capacitive and / or inductive measurement is also possible instead of or in addition to the laser sensor or inertial sensor.
- a device may comprise both an inertial sensor and a laser sensor.
- the devices according to the present invention have the advantage that in a simple way accurate statements regarding the stability of a knee joint, especially in a cruciate ligament tear or before or after an operation of a cruciate ligament, can be made.
- the devices for determining the stability of a knee joint according to the present invention are small, easy to handle and inexpensive devices with few components, which can be used in any smaller medical office or ambulance.
- the devices for improving the chances of recovery after a double-bundle knee joint surgery in which the rotational stability of the knee joint is restored, can be used.
- the wireless transmission of the measured values between the measuring sensor and the processing device does not impair the performance of the diagnostic methods.
- both hands of the therapist can be used in the diagnostic procedure.
- the results could also be displayed directly on the device.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Physiology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Rheumatology (AREA)
- Geometry (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008030534A DE102008030534A1 (de) | 2008-06-27 | 2008-06-27 | Vorrichtung zum Bestimmen der Stabilität eines Kniegelenks |
PCT/EP2009/004417 WO2009156097A1 (de) | 2008-06-27 | 2009-06-18 | Vorrichtung zum bestimmen der stabilität eines kniegelenks |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2299909A1 true EP2299909A1 (de) | 2011-03-30 |
Family
ID=40943645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09768946A Withdrawn EP2299909A1 (de) | 2008-06-27 | 2009-06-18 | Vorrichtung zum bestimmen der stabilität eines kniegelenks |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110213275A1 (de) |
EP (1) | EP2299909A1 (de) |
JP (1) | JP2011525394A (de) |
DE (1) | DE102008030534A1 (de) |
WO (1) | WO2009156097A1 (de) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004112610A2 (en) | 2003-06-09 | 2004-12-29 | Vitruvian Orthopaedics, Llc | Surgical orientation device and method |
US7559931B2 (en) | 2003-06-09 | 2009-07-14 | OrthAlign, Inc. | Surgical orientation system and method |
EP2136715B1 (de) * | 2007-04-19 | 2014-06-25 | Mako Surgical Corp. | Implantationsplanung anhand von erfassten gelenkbewegungsinformationen |
ES2683029T3 (es) | 2008-07-24 | 2018-09-24 | OrthAlign, Inc. | Sistemas para el reemplazo de articulaciones |
US20100137871A1 (en) | 2008-09-10 | 2010-06-03 | OrthAlign, Inc. | Hip surgery systems and methods |
US9364291B2 (en) * | 2008-12-11 | 2016-06-14 | Mako Surgical Corp. | Implant planning using areas representing cartilage |
AU2009100486A6 (en) * | 2009-05-23 | 2010-03-18 | Warren, Hayley Ms | HALO Disc |
US8876739B2 (en) * | 2009-07-24 | 2014-11-04 | Oregon Health & Science University | System for clinical assessment of movement disorders |
US8118815B2 (en) | 2009-07-24 | 2012-02-21 | OrthAlign, Inc. | Systems and methods for joint replacement |
US10869771B2 (en) | 2009-07-24 | 2020-12-22 | OrthAlign, Inc. | Systems and methods for joint replacement |
AU2011341678B2 (en) * | 2010-01-21 | 2014-12-11 | OrthAlign, Inc. | Systems and methods for joint replacement |
JP5644312B2 (ja) * | 2010-09-21 | 2014-12-24 | 大日本印刷株式会社 | 歩行状態表示システム |
EP2814392A4 (de) * | 2012-02-14 | 2015-09-30 | Univ California | Vorrichtung und verfahren zur quantifizierung der stabilität des kniegelenks |
EP2849683A4 (de) | 2012-05-18 | 2015-11-25 | Orthalign Inc | Vorrichtungen und verfahren zur kniearthroplastie |
US9649160B2 (en) | 2012-08-14 | 2017-05-16 | OrthAlign, Inc. | Hip replacement navigation system and method |
AU2013344326B2 (en) * | 2012-11-09 | 2018-07-26 | Dorsavi Pty Ltd | Method and apparatus for monitoring deviation of a limb |
DE102012111411B4 (de) * | 2012-11-26 | 2021-06-24 | Fior & Gentz Gesellschaft für Entwicklung und Vertrieb von orthopädietechnischen Systemen mbH | Verfahren zum automatisierten Unterstützen der Herstellung eines Negativmodells, das als Hilfsmittel zur Anfertigung eines orthopädietechnischen Hilfsmittels dient |
CN103431866B (zh) * | 2013-08-28 | 2015-04-22 | 新乡医学院 | 一种测量仰卧举腿的方法及装置 |
WO2015128845A1 (en) * | 2014-02-27 | 2015-09-03 | Valeo Luigi | System for measuring laxity of a joint |
JP6297407B2 (ja) * | 2014-05-16 | 2018-03-20 | 住友理工株式会社 | 角度センサ装置 |
WO2015188867A1 (de) * | 2014-06-12 | 2015-12-17 | Gaia Ag | Analyse und bewertung der qualität von körperbewegungen |
JP6108627B2 (ja) * | 2014-09-26 | 2017-04-05 | アニマ株式会社 | 膝関節回旋の解析装置 |
DE102015100795A1 (de) * | 2015-01-20 | 2016-07-21 | Jürgen Höher | Einrichtung zum Vermessen eines Gelenks |
US10363149B2 (en) | 2015-02-20 | 2019-07-30 | OrthAlign, Inc. | Hip replacement navigation system and method |
EP3270781A1 (de) * | 2015-03-19 | 2018-01-24 | Meloq AB | Verfahren und vorrichtung zur messung anatomischer winkel |
CN107613866B (zh) * | 2015-03-23 | 2021-12-17 | 合意骨科有限公司 | 用于监视矫形植入物和康复的***和方法 |
US11684260B2 (en) | 2015-03-23 | 2023-06-27 | Tracpatch Health, Inc. | System and methods with user interfaces for monitoring physical therapy and rehabilitation |
US11272879B2 (en) | 2015-03-23 | 2022-03-15 | Consensus Orthopedics, Inc. | Systems and methods using a wearable device for monitoring an orthopedic implant and rehabilitation |
EP3282947B1 (de) * | 2015-04-14 | 2020-09-02 | INESC TEC - Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência | Handgelenksteifigkeitsbewertungsvorrichtung zur verwendung in der tiefenhirnstimulationschirurgie |
US11484254B2 (en) * | 2015-11-20 | 2022-11-01 | RoboDiagnostics LLC | Floating patella sensor, knee stabilizer with same and robotic knee testing apparatus with same |
US10463279B2 (en) * | 2016-02-19 | 2019-11-05 | Trustees Of Dartmouth College | Movement monitoring systems and methods |
JP6478936B2 (ja) * | 2016-03-17 | 2019-03-06 | 株式会社東芝 | 行動推定装置、行動推定方法及び行動推定プログラム |
CN105996991B (zh) * | 2016-04-29 | 2019-04-26 | 北京三十四科技有限公司 | 膝关节功能稳定性评价***及评价方法 |
FR3052654B1 (fr) * | 2016-06-16 | 2018-07-27 | Sysnav | Procede d'estimation de l'orientation relative entre tibia et femur |
ES2593096B2 (es) * | 2016-10-10 | 2017-05-09 | Universidad Politécnica de Madrid | Soporte para fijar al cuerpo de un usuario un dispositivo |
EP3576610A4 (de) * | 2017-02-01 | 2021-04-14 | Consensus Orthopedics, Inc. | System und verfahren zur überwachung der physiotherapie und rehabilitation von gelenken |
US11172874B2 (en) | 2017-03-08 | 2021-11-16 | Strive Orthopedics, Inc. | Sensors and a method for evaluation of characteristics of human joints and for diagnosis of joint ailments |
CA3056382A1 (en) | 2017-03-14 | 2018-09-20 | OrthAlign, Inc. | Hip replacement navigation systems and methods |
EP3595550A4 (de) | 2017-03-14 | 2020-12-30 | OrthAlign, Inc. | Systeme und verfahren zum messen und ausgleich von weichgewebe |
GB2574074B (en) | 2018-07-27 | 2020-05-20 | Mclaren Applied Tech Ltd | Time synchronisation |
CN109259769A (zh) * | 2018-09-26 | 2019-01-25 | 华蓥市铜堡初级中学 | 一种用于腿部角度测量的角度传感器 |
CN111374635B (zh) * | 2018-12-29 | 2023-02-10 | 西安思博探声生物科技有限公司 | 一种膝关节运动信息的处理设备和*** |
GB2588236B (en) | 2019-10-18 | 2024-03-20 | Mclaren Applied Ltd | Gyroscope bias estimation |
CN114727777A (zh) * | 2019-11-18 | 2022-07-08 | 3M创新有限公司 | 使用颜色感测的关节和肢体监测***和方法 |
GB2586526B (en) * | 2019-12-20 | 2021-08-11 | Digital & Future Tech Limited | System and method for monitoring body movement |
US10863928B1 (en) | 2020-01-28 | 2020-12-15 | Consensus Orthopedics, Inc. | System and methods for monitoring the spine, balance, gait, or posture of a patient |
US20230380755A1 (en) * | 2020-10-23 | 2023-11-30 | Osaka University | Joint evaluation apparatus, method, and storage medium |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4583555A (en) | 1983-01-03 | 1986-04-22 | Medmetric Corporation | Knee ligament testing system |
US4649934A (en) | 1985-06-07 | 1987-03-17 | Faro Medical Technologies, Inc. | Joint laxity measurement |
DE3636843A1 (de) | 1986-10-29 | 1987-05-27 | Rudolf Dipl Phys Proescholdt | Messgeraet zur bestimmung vorderer und hinterer schubladen am menschlichen kniegelenk in verschiedenen rotationsstellungen des unterschenkels und in verschiedenen beugestellungen |
DE3925014A1 (de) | 1989-07-27 | 1991-01-31 | Joachim Dr Med Grifka | Verfahren zur pruefung der stabilitaet von gelenken, insbesondere kniegelenken des menschlichen koerpers und haltegeraet zur durchfuehrung des verfahrens |
NL9200721A (nl) * | 1992-04-21 | 1993-11-16 | Gatso Special Prod Bv | Inrichting voor het beproeven van een gewricht. |
GB9422007D0 (en) * | 1994-11-01 | 1994-12-21 | Beacon Jonathan P | An orthopaedic measurement and display system |
JPH09229667A (ja) * | 1996-02-28 | 1997-09-05 | Imeeji Joho Kagaku Kenkyusho | 回転関節構造物の動作計測装置および方法 |
DE19701838A1 (de) * | 1997-01-21 | 1998-07-23 | Albert Prof Dr Gollhofer | Meßanordnung zur Bestimmung der Schubladenverschiebung |
US6522266B1 (en) * | 2000-05-17 | 2003-02-18 | Honeywell, Inc. | Navigation system, method and software for foot travel |
US6561991B2 (en) * | 2000-12-19 | 2003-05-13 | The Research Foundation Of The State University Of New York (Suny) | Non-invasive method and system of quantifying human postural stability |
DE20118040U1 (de) | 2001-11-06 | 2003-01-09 | Richter, Lutz, 02791 Oderwitz | Gelenkdiagnoseset |
JP2003319920A (ja) * | 2002-04-30 | 2003-11-11 | Og Giken Co Ltd | 関節運動機能評価装置及び評価方法 |
JP4350394B2 (ja) * | 2003-03-04 | 2009-10-21 | マイクロストーン株式会社 | 変形性膝関節症の判定装置 |
DE102004055234B4 (de) * | 2004-11-16 | 2014-01-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Bestimmen wenigstens eines charakteristischen Punktes eines orthopädisch zu vermessenden Gelenks |
DE102004057933A1 (de) * | 2004-12-01 | 2006-06-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und eine Vorrichtung zum Navigieren und Positionieren eines Gegenstands relativ zu einem Patienten |
JPWO2006085387A1 (ja) * | 2005-02-08 | 2008-06-26 | 高樹 長宗 | 非侵襲性動体解析システム及びその使用方法 |
EP1922010A2 (de) * | 2005-05-02 | 2008-05-21 | Smith & Nephew, Inc. | System und verfahren zur bestimmung der tibiarotation |
US7753862B2 (en) * | 2005-07-13 | 2010-07-13 | Thomas P. Branch | Apparatus and method for evaluating ligaments |
-
2008
- 2008-06-27 DE DE102008030534A patent/DE102008030534A1/de not_active Ceased
-
2009
- 2009-06-18 EP EP09768946A patent/EP2299909A1/de not_active Withdrawn
- 2009-06-18 US US13/001,065 patent/US20110213275A1/en not_active Abandoned
- 2009-06-18 WO PCT/EP2009/004417 patent/WO2009156097A1/de active Application Filing
- 2009-06-18 JP JP2011515172A patent/JP2011525394A/ja active Pending
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2009156097A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102008030534A1 (de) | 2009-12-31 |
WO2009156097A1 (de) | 2009-12-30 |
JP2011525394A (ja) | 2011-09-22 |
US20110213275A1 (en) | 2011-09-01 |
WO2009156097A8 (de) | 2010-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2299909A1 (de) | Vorrichtung zum bestimmen der stabilität eines kniegelenks | |
EP1742583B1 (de) | Einrichtung zum erfassen einer kraft-weg-kennlinie eines oder mehrerer bänder | |
EP2092907B1 (de) | Lageberechnung von Körperteilen unter Berücksichtigung der anatomischen Symmetrie | |
EP3644852B1 (de) | Messverfahren und vorrichtung zur bestimmung der längenverhältnisse, der position und/oder des bewegungsradius der unteren extremitäten eines bettpflichtigen patienten | |
EP3068331B1 (de) | Chirurgische referenzierungsvorrichtung und chirurgisches navigationssystem | |
DE102007024708B4 (de) | Vorrichtung und Verfahren zur Bestimmung der mechanischen Beinachse eines Oberschenkelknochens | |
AT515976B1 (de) | Vorrichtung zum Erfassen von Tremor | |
van Amstel et al. | Skin Displacement as fascia tissue manipulation at the lower back affects instantaneously the flexion-and extension spine, pelvis, and hip range of motion | |
WO2009007332A2 (de) | Verfahren zum ermitteln von für die charakterisierung von gelenkbewegungen relevanten informationen | |
DE102012111426B4 (de) | Vorrichtung zur Messung einer Tibiaverschiebung | |
DE102007031946A1 (de) | Verfahren zum Ermitteln von für die Charakterisierung von Gelenkbewegungen relevanten Informationen | |
DE60209933T2 (de) | Dynamometer und zugehöriges auswertungsverfahren | |
DE102019131703B4 (de) | Vorrichtung zur durchführung einer individuellen bewegungsanalyse und -therapie eines patienten | |
EP3912555B1 (de) | Verfahren zur bestimmung des rotationspunktes eines kniegelenkes, verfahren zur herstellung einer kniegelenksendoprothese oder einer kniegelenksübergreifenden orthese und vorrichtung zur durchführung eines verfahrens zur bestimmung des rotationspunktes eines kniegelenkes | |
DE102004019590A1 (de) | Verfahren zur kernspintomographischen Messung dynamischer Signale | |
WO2023046926A1 (de) | Medizintechnisches system und verfahren | |
DE102011088606A1 (de) | Vorrichtung zur Bestimmung zumindest eines Gelenkwinkels und/oder einer Beweglichkeit eines Gelenks einer Person | |
DE19617981C1 (de) | Vorrichtung zum Messen der Verschiebbarkeit des Unterschenkelknochens parallel zu sich selbst relativ zum Oberschenkelknochen im Bereich eines Kniegelenkes | |
Osman et al. | Motion Analysis for Deep Tendon Reflex | |
WO2023218039A1 (de) | Vorrichtung und verfahren zur standardisierung der achsausrichtung und -position von kinematikdaten bezüglich eines körpergelenks eines patienten | |
EP2186477B1 (de) | Nichtinvasiver Sensor zur Untersuchung des Bewegungsapparates von Menschen oder Tieren | |
EP3030188A1 (de) | System zur rekonstruktion symmetrischer körperteile | |
DE202015009964U1 (de) | Einrichtung mit Bewegungssensor zum Vermessen eines Gelenks | |
DE102021111917A1 (de) | Vorrichtung und Verfahren zur Ermittlung mindestens eines Mobilitätsparameters eines Lebewesens, sowie Verwendung einer Bilderfassungs- und einer Ermittlungseinrichtung | |
DE202015009965U1 (de) | Einrichtung und Kalibrierauflage zum Vermessen eines Gelenks |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20101214 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BORT, WOLFGANG Inventor name: SCHNEIDER, URS Inventor name: BOOS, RONALD Inventor name: MARQUARDT, GERHARD |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BORT GMBH |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BOOS, RONALD Inventor name: SCHNEIDER, URS Inventor name: BORT, WOLFGANG Inventor name: MARQUARDT, GERHARD |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20170413 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20170824 |