NL2032484B1 - System for measuring a depth of a bore drilled in a bone - Google Patents

System for measuring a depth of a bore drilled in a bone Download PDF

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Publication number
NL2032484B1
NL2032484B1 NL2032484A NL2032484A NL2032484B1 NL 2032484 B1 NL2032484 B1 NL 2032484B1 NL 2032484 A NL2032484 A NL 2032484A NL 2032484 A NL2032484 A NL 2032484A NL 2032484 B1 NL2032484 B1 NL 2032484B1
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Netherlands
Prior art keywords
drill
attachment
drilling
reference surface
bone
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NL2032484A
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Dutch (nl)
Inventor
Kölling Bart
Baltus Laurensz Schornagel Justus
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Slam Ortho B V
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Priority to NL2032484A priority Critical patent/NL2032484B1/en
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Publication of NL2032484B1 publication Critical patent/NL2032484B1/en

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    • 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
    • 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
    • A61B17/1622—Drill handpieces
    • 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
    • A61B17/16—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
    • 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
    • A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
    • 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
    • A61B2090/062—Measuring instruments not otherwise provided for penetration depth

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

Abstract

System for measuring a depth of a bore drilled in a bone in a drilling direction during surgery, wherein the system comprises a contactless distance sensor and an attachment, the attachment 5 comprising a reference surface, arranged to face the distance sensor, and a connection mechanism configured to detachably arrange the attachment onto a surgical instrument, such as a drill bit for drilling the bore in the bone or a drill guide for guiding such a drill bit during drilling, wherein the distance sensor is arranged to measure a distance between the sensor and the reference surface in a measuring direction during drilling, the distance representing the depth of the bore in the bone.

Description

System for measuring a depth of a bore drilled in a bone
The present invention relates to a system for measuring a depth of a bore drilled in a bone during surgery, for example orthopaedic surgery, trauma surgery, neurosurgery or dental surgery.
During plate osteosynthesis, for instance, screws are placed in a broken bone by an orthopaedic or trauma surgeon to fix the bone fracture with a plate fixed to all bone fragments with the screws to interconnect the fragments. The screws are to be accurately inserted to a correct depth.
The international patent application with publication No. WO 2019/134942 discloses a system for measuring a depth of a bore drilled in a bone during surgery, wherein the system comprises a contactless distance sensor which measures a distance with electromagnetic waves emitted parallel to the drilling direction and reflected by a surface, wherein the distance sensor is arranged to produce a signal for determining the depth of the bore based on the reflected waves. In this system, the waves may be reflected on any surface. However, it is often challenging to obtain accurate and/or useful data. For instance, it may be underivable from the data what surface has been used as the reflecting surface. Furthermore. the surface may not be sufficiently reflective and/or the waves may be scattered, such that the reflected waves are insufficiently received by the sensor for obtaining useful data, for instance when the emitted wave is mainly reflected at an inconvenient angle. For example, the bore may be drilled in an area with soft tissue which is affected by the drilling and the bone topography, and other external objects affecting the reflected wave, may vary.
As a consequence, tissue of a patient typically does not provide a reliable reference surface.
The known system may be used in combination with a drill sleeve for guiding the drill during operation, wherein the drill sleeve is provided with a flange having a reflective surface for reflecting electromagnetic signals of the distance sensor. Such a drill sleeve generally serves to prevent the drill bit from damaging surrounding tissue and/or to guide the drill bit during drilling.
However, a disadvantage of the known system is that an experienced surgeon may have to switch from a surgical instrument known to the surgeon to a surgical instrument having a reflective surface that the surgeon has not yet used before. In fact, even if the surgeon would feel comfortable with switching to surgical instruments having such a reflective surface, these surgical instruments may differ in dimension and configuration so that the various instruments may not provide a consistent reference surface, as a result of which still no useful distance measurement data can be obtained.
Furthermore, during surgery the flange having the reflective surface may be, at times, obstructive to the surgeon, who may then be urged to switch to a drill sleeve without a flange. Moreover, often the drill sleeve is threaded at a distal end thereof and screwed into the plate that is to be implanted, which complicates switching to a flangeless drill sleeve even further.
A further disadvantage is that, when removing the drill bit from the drill guide, blood or other material dripping from the drill bit may stain the reflective surface. The staining may affect the accuracy of the distance measurement data.
It is an object of the present invention, among other objects, to provide an improved system wherein the aforesaid drawbacks are at least partially alleviated.
Thereto, a system for measuring a depth of a bore drilled in a bone in a drilling direction during surgery is provided, wherein the system comprises a contactless distance sensor and an attachment, the attachment comprising a reference surface, arranged to face the distance sensor, and a connection mechanism configured to detachably arrange the attachment onto a surgical mstrument, such as a drill bit for drilling the bore in the bone or a drill guide for guiding such a drill bit during drilling, wherein the distance sensor is arranged to measure a distance between the sensor and the reference surface in a measuring direction during drilling, the distance representing the depth of the bore in the bone.
By allowing the attachment to be detachably arranged onto a surgical instrument, the connection mechanism enables the reference surface to be removed when the reference surface is not required and/or when the reference surface is obstructive to the surgeon. Furthermore, the attachment can be universally applied in combination with any already existing surgical instrument, including the instruments already known to the surgeon. This has the advantage that the surgeon can continue to use the same surgical instrument with or without the attachment.
According to a further preferred embodiment of the system, the system further comprises a drill bit and at least one of a drill bit unit and a drilling machine for driving the drill bit into the bone, the drill bit unit comprising a component housing and the drill bit. Preferably, the distance sensor is arranged on the one of the drilling machine and the drill bit unit, preferably in the component housing thereof. The system may thus comprise a drill bit unit comprising the distance sensor and a drill bit for drilling the bore in the bone, and/or a drilling machine provided with the distance sensor. In particular when arranging the distance sensor stationary relative to the drilling machine or the drill bit, movement of the drill drilling into the bone would result in displacement of the distance sensor relative to the reference surface. This change of the distance between the sensor and the reference surface is representative for the drilling depth.
According to a preferred embodiment of the system, the distance sensor is arranged to emit an electromagnetic wave, wherein the system is arranged to direct the electromagnetic wave in the measuring direction for measuring the distance, wherein the reference surface is arranged to reflect the electromagnetic wave, wherein the distance sensor is further arranged to receive the reflected electromagnetic wave and to produce a signal based on the received electromagnetic wave, the signal representing the distance. This way, useful data related to the depth of the bore can be obtained. The distance between the sensor and the reference surface may be calculated on the basis of the reflection angle, the phase or time difference and/or the intensity of the received wave.
More generally, the reference surface is preferably arranged to reflect electromagnetic waves.
Preferably, the reference surface, specifically the material thereof, has predetermined reflective, absorptive and/or scattering properties in accordance with the distance sensor, specifically the waves emitted thereby, to ensure that useful and reliable distance measurement data can be obtained.
It is to be appreciated that the term “electromagnetic wave” includes any electromagnetic pulse suitable for a distance measurement when emitted by the distance sensor. More in general, the distance sensor herein may be arranged to emit any wave for measuring the distance, including waves other than electromagnetic waves, such as an acoustic wave.
According to a preferred embodiment, the attachment is provided with a through hole extending through the reference surface for receiving a drill bit therethrough and to allow axial movement of the drill bit relative to the reference surface for drilling the bore in the bone. Preferably, the attachment is arranged to limit any movement of the drill bit relative to the reference surface other than the axial movement through the through hole. This way, the position and/or orientation of the reference surface with respect to the sensor can be stabilised.
According to an embodiment wherein the attachment is to be arranged onto a drill guide, the connection mechanism preferably comprises a clamp arranged for releasably clamping onto the drill guide. Preferably, the clamp is adjustable for clamping drill guides of different sizes. The clamp may comprise, ¢.g.. a spring, a magnet or a gripping member, although various alternative connection mechanisms can be envisaged.
When the attachment is arranged onto a drill guide, the connection mechanism can prevent the attachment, in particular the reference surface, from moving relative to the drill guide, particularly in an axial direction. As such, the distance can be accurately measured. Prior to surgery, the attachment is arranged onto the drill guide. During drilling of the drill bit into the bone, the attachment is stationary relative to the drill guide such that the distance sensor moves towards the attachment. Based on the decrease in distance between the attachment and the distance sensor, the drilling depth can be calculated.
It is however preferred, according to an alternative embodiment, that the attachment 1s to be arranged onto the drill bit. According to that embodiment, the connection mechanism preferably comprises a clamp arranged for releasably clamping onto the drill bit received by the through hole.
Consequently, the attachment may rotate together with the drill bit during drilling. The clamp may comprise, €.g., a spring, a magnet or an elastic gripping member.
A particular advantage of the embodiment wherein the attachment is to be arranged onto a drill bit is that the reference surface can be placed close to the drill bit, which minimises obstructions during drilling. That is. by arranging the attachment onto the drill bit, the attachment can rotate together with the drill bit and does not obstruct the drilling such as when the position or orientation of the drill bit is varied.
Furthermore, in case the reference surface is fixed to the drill guide, blood or other material dripping from the drill bit may stain the reference surface when removing the drill bit from the drill guide. whereas in case the attachment with the reference surface is arranged onto the drill bit, staining of the reference surface is prevented since the attachment is removed from the drill guide together with the drill bit.
More in general, for reliable distance measurement data it is preferred if positional stability of the attachment, specifically the reference surface, with respect to the distance sensor and the bone is ensured by the connection mechanism attaching the attachment onto the drill bit or the drill guide.
Specifically, it can be ensured that the reference surface remains perpendicular to the measuring direction and/or the drill bit. Additionally, the connection mechanism facilitates the convenient detachment of the attachment from the surgical instrument at times when the reference surface may not be required and may get in the way of the surgeon. Furthermore, the connection mechanism allows the attachment to be detachably arranged onto a variety of existing surgical instruments, such that a single attachment can be universally applied in combination with the variety of instruments.
It is then further preferred if the clamp comprises a resilient member arranged for urging the clamp into clamping engagement with the drill bit, wherein the resilient member is arranged to allow axial movement of the drill bit relative to the reference surface. This way, the attachment can be 5 clamped onto the drill bit both in a sufficiently secure manner, to prevent the attachment from fully sliding off the drill bit, and in a sufficiently flexible manner such that the attachment can be pushed and slidably moved along the drill bit. In other words, the connection mechanism holds onto the drill bit while allowing axial movement of the attachment over the drill bit when a force is applied to the attachment, for instance by the surgeon during attachment of the attachment onto the surgical instrument or by the drill guide during drilling.
A further advantage of the attachment arranged onto the drill bit is then that, whenever the reference surface is temporarily unrequired, instead of removing the attachment from the drill bit, the attachment can simply be pushed over the drill bit towards the drill holding the drill bit, such that the attachment does not form an obstruction.
Furthermore, due to the resilient member the attachment can be clamped onto drill bits of varying diameter, which enhances efficiency. To illustrate, a single attachment may be sized to be arranged onto any drill bit with a diameter between 2 and 4 millimetres. Another attachment may be sized to be arranged onto any drill bit with a diameter between 4 and 6 millimetres, such that only two attachment sizes cover a diameter range of 2 to 6 millimetres. A bearing may be used to facilitate sliding of the attachment over the drill bit.
In that context, the attachment preferably further comprises a bearing surface arranged for slidably contacting a drill guide for guiding the drill bit in the drilling direction during drilling. Prior to surgery, the attachment may be arranged onto the drill bit such that, when the drill bit is inserted into a drill guide, the bearing surface rests against the drill guide. During drilling of the drill bit into the bone, the attachment contacts the drill guide, and the bearing surface is pushed by the drill guide such that the attachment slides along the drill bit towards the distance sensor. As the attachment is pushed over the drill bit by the drill guide, the reference surface provides the distance sensor with a measuring point that is temporarily fixed in the axial direction. Based on the distance travelled by the attachment along the drill bit, the drilling depth can be calculated. Since the attachment may rotate together with the drill bit relative to the drill guide, it is preferred that the bearing surface allows the attachment to slide against the drill guide upon rotation to prevent excessive wear of the attachment and/or drill guide and enhance durability thereof.
According to a further preferred embodiment, the reference surface is arranged perpendicular to the measuring direction and/or the drilling direction of the drill guide. This ensures that the wave hits the reference surface perpendicularly. Preferably, the measuring direction is parallel to the drilling direction. More specifically, the reference surface is preferably arranged perpendicular to the direction in which the through hole extends. In this manner, accurate and useful distance measurements can be obtained.
According to a further preferred embodiment, the reference surface is flat. A flat reference surface results in more accurate distance measurements.
According to a further preferred embodiment, the reference surface is circular. Accordingly, it is ensured that the wave can be reflected by the reference surface, including when the attachment is arranged onto the drill bit and rotates together with the drill bit, or when the distance sensor rotates together with the drill bit.
According to another aspect, an attachment is provided, wherein the attachment comprises a reference surface and a connection mechanism configured to detachably arrange the attachment onto a surgical instrument, such as a drill bit for drilling the bore in the bone in a drilling direction or a drill guide for guiding such a drill bit during drilling. Preferably the attachment is an attachment according to any one of the attachments described above.
The attachment can be used in combination with a contactless distance sensor as described above, wherein the reference surface is arranged to face the distance sensor, wherein the distance sensor is arranged to measure a distance between the sensor and the reference surface in a measuring direction during drilling, the distance representing the depth of the bore in the bone.
The attachment may be reusable, recyclable or disposable, i.¢., for single use purposes. Especially when the attachment is to be reused, the attachment is to be durably manufactured, since the attachment is to be sterilised for reuse. Furthermore, during surgery, the attachment may be exposed to large forces, high pressure and/or high temperature. Thereto, the attachment 1s preferably made from a resistant material for withstanding such possibly harsh circumstances.
More specifically, the attachment may be made from metal, any suitable synthetic material, or a combination thereof. E.g., the attachment may be manufactured by injection-moulding.
The invention is hereinafter further elucidated with reference to the attached drawings, wherein: - Figure 1 shows a drill system for drilling a bore in a bone during surgery:
- Figures 2A-B show an embodiment of a system for measuring a depth of the bore, wherein the system comprises an attachment; - Figures 3A-6B show variants of the attachment shown in Figures 2A-B; - Figures 7A-B show an alternative embodiment of the bore depth measuring system shown in Figures 2A-B; - Figures 8A-9 show variants of the attachment shown in Figures 7A-B.
Figures 1, 2B and 7A each depict a system 10 for drilling a bore in a bone 7 and measuring a depth of the bore during surgery, for example orthopaedic surgery, trauma surgery, neurosurgery or dental surgery. The system 10 comprises a drill 5 comprising a drill chuck 6 holding a drill bit unit 1 comprising a drill bit 3, mounted in the drill chuck 6. and a component housing 4 extending around the drill bit 3 and encapsulating components of the drill bit unit 1, such as a sensor for obtaining data, a processor for processing the data, a transmitter for transmitting the data, a power source, a controller, and other electronic components, insofar they are mounted in the drill bit unit.
The system 10 further comprises a drill sleeve 8 for guiding the drill bit 3 during operation, wherein the drill sleeve 8 is provided with a handle 81 to be held by the surgeon. The drill sleeve 8 further serves to prevent the drill bit 3 from damaging surrounding tissue during drilling.
As shown in Figures 2B and 7A, the drill 5 is provided with a contactless distance sensor 12.
Alternatively, the component housing 4 of the drill bit unit 1 may be provided with the distance sensor 12 as indicated in Figure 1. The system 10 further comprises an attachment 2. As shown in
Figure 2A, the attachment 2 is provided with a through hole 20 receiving the drill bit 3 therethrough to arrange the attachment 2 onto the drill bit 3 prior to surgery. The attachment 2 comprises a connection mechanism 21, described in more detail below. The attachment 20 further comprises a circular flange 22 around the through hole 20. The flange 22 has a flat reflective reference surface 23 facing the distance sensor 12. The through hole 20 extends perpendicularly through the reference surface 23 to ensure that the reference surface 23 remains perpendicular to the drill bit 3.
The distance sensor 12 is arranged to measure a distance between the sensor 12 and the reference surface 23 during drilling, the distance representing the depth of the bore in the bone 7. Thereto, the distance sensor 12 emits a pulse in a measuring direction parallel to the drilling direction, wherein the pulse is reflected by the reference surface 23 of the attachment 20. The reflected pulse is received by the distance sensor 12 to calculate the distance between the sensor 12 and the reference surface 23 based on, e.g., the phase or time difference and/or the intensity of the reflected pulse.
The connection mechanism 21 comprises axially extending resilient clamping members 211 extending from the flange 22, which are arranged around the through hole 20 for clamping onto the drill bit 3 inserted into the through hole 20. The resilient members 211 allow some axial movement of the drill bit 3 relative to the reference surface 23. This way, the attachment 2 can be clamped onto the drill bit 3 both in a sufficiently secure manner, to prevent the attachment 2 from sliding off the drill bit 3. and in a sufficiently flexible manner such that the attachment 2 can be pushed and slidably moved along the drill bit 3. In other words, the resilient members 211 hold onto the drill bit 3 while allowing axial movement of the attachment 2 over the drill bit 3 when a force is applied to the attachment 2, for instance during attachment of the attachment 2 onto the drill bit 3 or by the drill sleeve 8 during drilling as explained as follows.
The attachment 2 further comprises a bearing surface 24 which, when the drill bit 3 is inserted into the drill sleeve 8 as shown in Figure 2B, rests against the proximal end of the drill sleeve 8. During drilling of the drill bit 3 into the bone 7, the bearing surface 24 is pushed by the drill sleeve 8 such that the attachment 2 slides along the drill bit 3 towards the distance sensor 12. Based on the distance travelled by the attachment 2 as the attachment 2 is pushed along the drill bit 3, the drilling depth can be calculated.
Figures 3A-B represent a variant of the attachment 2, wherein the leaflike resilient clamping members 211 protrude from the flange 22 towards a free end of the members 211. Figures 4A-B represent another variant of the attachment 2, wherein the clamping members 211 are made resilient by helically arranging the members 211 with helically extending slots therebetween.
Figures 5A-B represent a further variant of the attachment 2, wherein a pair of cooperating leaf springs 211 are arranged on either side of the drill bit 3 extending through the through hole 20 to laterally clamp onto the drill bit 3. Whereas, in the above variants, the attachment 2 is arranged onto the drill bit 3 by longitudinally inserting the drill bit 3 into the through hole 20, Figures 6A-B represent yet another variant of the attachment, wherein the connection mechanism 21 comprises a gripping member 212 arranged around the through hole 20 and provided with a slot opening 210 extending from the through hole 20 radially outwards for laterally inserting the drill bit 3 into the through hole 20. The gripping member 212 is further provided with tangentially spaced radial incisions 213 to provide the gripping member 212 with flexibility in the tangential direction to facilitate laterally inserting and gripping the drill bit 3.
Whereas the attachment 2 in Figures 2A-6B is to be arranged onto the drill bit 3, Figure 7A depicts the system 10 for drilling a bore in a bone 7 and measuring a depth of the bore during surgery wherein the attachment 2 is instead to be arranged onto the drill sleeve 8. As shown in Figure 7B, the connection mechanism 21 of the attachment 2 comprises a clamp 214 for laterally clamping onto the drill sleeve 8. When the attachment 2 is arranged onto the drill sleeve 8. the connection mechanism 8 prevents the attachment 2 from moving relative to the drill sleeve 8. As such, during dnlling of the drill bit 3 into the bone 7, the attachment 2 is stationary relative to the drill sleeve 8 such that the distance sensor 12 moves towards the reference surface 23 on the attachment 2. Based on the decrease in distance between the reference surface 23 and the distance sensor 12. the drilling depth can be calculated.
Figures 8A-C represent a variant of the attachment 2, wherein the attachment 2 is arranged onto the proximal end of the drill sleeve 8, instead of clamped onto the sleeve 8 laterally. The connection mechanism 21 engages both the handle 81 and the tubular part 80 of the drill sleeve 8. Figure 9 represents another variant of the attachment, wherein the connection mechanism 21 engages only the handle 81.
The figures and the above description serve to illustrate specific embodiments of the invention and do not limit the scope of protection defined by the following claims.

Claims (16)

ConclusiesConclusions 1. Systeem voor het meten van een diepte van een boring die in een bot wordt geboord in een boorrichting tijdens een operatie, waarbij het systeem een contactloze afstandssensor en een opzetstuk omvat. waarbij het opzetstuk een referentieoppervlak, dat is ingericht om naar de afstandssensor gericht te zijn, en een verbindingsmechanisme omvat dat is ingericht om het opzetstuk losneembaar aan te brengen op een chirurgisch instrument, zoals een boor voor het in het bot boren van de boring of een boorgeleider voor het geleiden van een dergelijke boor tijdens het boren, waarbij de afstandssensor is ingericht om een afstand tussen de sensor en het referenticoppervlak te meten in een meetrichting tijdens het boren, waarbij de afstand de diepte van de boring in het bot vertegenwoordigt.CLAIMS 1. System for measuring a depth of a bore drilled in a bone in a drilling direction during surgery, the system comprising a non-contact distance sensor and an attachment. wherein the attachment comprises a reference surface adapted to face the distance sensor and a connecting mechanism adapted to detachably mount the attachment on a surgical instrument, such as a drill for drilling the bore into the bone or a drill guide for guiding such a drill during drilling, wherein the distance sensor is designed to measure a distance between the sensor and the referentic surface in a measuring direction during drilling, wherein the distance represents the depth of the drilling in the bone. 2. Systeem volgens conclusie 1, waarbij het opzetstuk is voorzien van een doorgaand gat dat zich door het referentieoppervlak uitstrekt voor het daardoorheen opnemen van een boor en om beweging van de boor ten opzichte van het referentieoppervlak in de axiale richting van de boring voor het in het bot boren van de boring toe te laten.2. System according to claim 1, wherein the attachment is provided with a through hole extending through the reference surface for receiving a drill therethrough and for movement of the drill relative to the reference surface in the axial direction of the bore for drilling. to allow blunt drilling of the bore. 3. Systeem volgens conclusie 2, waarbij het verbindingsmechanisme een klem omvat die is ingericht voor het losneembaar klemmen op de door het doorgaande gat opgenomen boor.3. System according to claim 2, wherein the connecting mechanism comprises a clamp that is designed for releasable clamping on the drill received by the through hole. 4. Systeem volgens conclusie 3. waarbij de klem een veerkrachtig orgaan omvat dat is ingericht voor het in klemmende aangrijping met de boorkop brengen van de klem, waarbij het veerkrachtige orgaan is ingericht om axiale beweging van de boor ten opzichte van het referentieoppervlak toe te laten.4. System according to claim 3, wherein the clamp comprises a resilient member adapted to bring the clamp into clamping engagement with the drill bit, the resilient member being adapted to allow axial movement of the drill relative to the reference surface . 5. Systeem volgens conclusie 4, waarbij het opzetstuk verder een contactvlak omvat dat is ingericht om schuifbaar in aanraking te komen met een boorgeleider voor het tijdens het boren in de boorrichting geleiden van de boor.5. System according to claim 4, wherein the attachment further comprises a contact surface that is designed to slide into contact with a drill guide for guiding the drill in the drilling direction during drilling. 6. Systeem volgens een van de voorgaande conclusies, waarbij het referenticoppervlak cirkelvormig is.6. System according to any of the preceding claims, wherein the referentic surface is circular. 7. Systeem volgens cen van de voorgaande conclusies, waarbij de afstandssensor is ingericht om een elektromagnetische golf uit te zenden, waarbij het systeem is mgericht om de elektromagnetische golf te richten in de meetrichting voor het meten van de afstand, waarbij het referentieoppervlak is ingericht om de elektromagnetische golf te reflecteren, waarbij de afstandssensor verder is ingericht om de gereflecteerde elektromagnetische golf te ontvangen en om een signaal te produceren op basis van de ontvangen elektromagnetische golf, waarbij het signaal de afstand vertegenwoordigt. 7. System according to any of the preceding claims, wherein the distance sensor is designed to emit an electromagnetic wave, wherein the system is designed to direct the electromagnetic wave in the measuring direction for measuring the distance, wherein the reference surface is designed to to reflect the electromagnetic wave, wherein the distance sensor is further arranged to receive the reflected electromagnetic wave and to produce a signal based on the received electromagnetic wave, the signal representing distance. 8 Systeem volgens een van de voorgaande conclusies, waarbij het referenticoppervlak vlak is en loodrecht op de meetrichting is opgesteld.8 System according to any of the preceding claims, wherein the referentic surface is flat and is arranged perpendicular to the measuring direction. 9. Systeem volgens cen van de voorgaande conclusies, waarbij de meetrichting evenwijdig 1s aan de boorrichting.9. System according to any of the preceding claims, wherein the measuring direction is parallel to the drilling direction. 10. Systeem volgens een van de voorgaande conclusies, waarbij het systeem verder een boor omvat en ten minste één van een booreenheid en een boormachine voor het in het bot drijven van de boor, waarbij de booreenheid een componentbehuizing en de boor omvat.System according to any of the preceding claims, wherein the system further comprises a drill and at least one of a drill unit and a drill machine for driving the drill into the bone, wherein the drill unit comprises a component housing and the drill. 11. Systeem volgens conclusie 10, waarbij de afstandssensor is aangebracht op de ene van de booreenheid en de boormachine.11. System according to claim 10, wherein the distance sensor is arranged on one of the drilling unit and the drilling machine. 12. Opzetstuk voor gebruik in een systeem voor het meten van een diepte van een boring die in een bot wordt geboord tijdens een operatie volgens een van de voorgaande conclusies, waarbij het opzetstuk een referentieoppervlak en een verbindingsmechanisme omvat dat is ingericht om het opzetstuk losneembaar aan te brengen op een chirurgisch instrument, zoals een boor voor het in het bot boren van de boring of een boorgeleider voor het geleiden van een dergelijke boor tijdens het boren.12. Attachment for use in a system for measuring a depth of a bore drilled in a bone during an operation according to any of the preceding claims, wherein the attachment comprises a reference surface and a connecting mechanism adapted to detachably attach the attachment to be applied to a surgical instrument, such as a drill for drilling the bore into the bone or a drill guide for guiding such a drill during drilling. 13. Opzetstuk volgens conclusie 12, waarbij het verbindingsmechanisme een klem omvat die is ingericht voor het losneembaar klemmen op de boorgeleider.13. Attachment according to claim 12, wherein the connecting mechanism comprises a clamp that is designed for releasable clamping on the drill guide. 14. Opzetstuk volgens conclusie 12 of 13, waarbij het referentieoppervlak vlak is en loodrecht op de boorrichting van de boorgeleider 1s opgesteld.14. Attachment according to claim 12 or 13, wherein the reference surface is flat and arranged perpendicular to the drilling direction of the drilling guide 1s. 15. Opzetstuk volgens conclusie 12, 13 of 14, waarbij het referentieoppervlak is ingericht om elektromagnetische golven te reflecteren.15. Attachment according to claim 12, 13 or 14, wherein the reference surface is designed to reflect electromagnetic waves. 16. Opzetstuk volgens ten minste conclusie 12, waarbij het opzetstuk is voorzien van een doorgaand gat dat zich door het referentieoppervlak uitstrekt voor het daardoorheen opnemen van een boor en om axiale beweging van de boor ten opzichte van het referentieoppervlak voor het in het bot boren van de boring toe te laten.16. Attachment according to at least claim 12, wherein the attachment is provided with a through hole extending through the reference surface for receiving a drill therethrough and for axial movement of the drill relative to the reference surface for drilling into the bone. to allow the drilling.
NL2032484A 2022-07-14 2022-07-14 System for measuring a depth of a bore drilled in a bone NL2032484B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017083992A1 (en) * 2015-11-16 2017-05-26 Ao Technology Ag Surgical power drill including a measuring unit suitable for bone screw length determination
WO2019134942A1 (en) 2018-01-08 2019-07-11 Slam Ortho B.V. A system and a drill bit for drilling a bore in a bone and measuring a depth of the bore during surgery
US20210307764A1 (en) * 2018-07-31 2021-10-07 Synthes Gmbh Surgical Instrument

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017083992A1 (en) * 2015-11-16 2017-05-26 Ao Technology Ag Surgical power drill including a measuring unit suitable for bone screw length determination
WO2019134942A1 (en) 2018-01-08 2019-07-11 Slam Ortho B.V. A system and a drill bit for drilling a bore in a bone and measuring a depth of the bore during surgery
US20210307764A1 (en) * 2018-07-31 2021-10-07 Synthes Gmbh Surgical Instrument

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