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WO2025112021A1 - Installation pour marqueurs de positionnement - Google Patents

Installation pour marqueurs de positionnement Download PDF

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Publication number
WO2025112021A1
WO2025112021A1 PCT/CN2023/135764 CN2023135764W WO2025112021A1 WO 2025112021 A1 WO2025112021 A1 WO 2025112021A1 CN 2023135764 W CN2023135764 W CN 2023135764W WO 2025112021 A1 WO2025112021 A1 WO 2025112021A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping plates
implementations
installation
clamping
slide
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.)
Pending
Application number
PCT/CN2023/135764
Other languages
English (en)
Inventor
Shuhao Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fu Jen Catholic University
Original Assignee
Fu Jen Catholic University
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 Fu Jen Catholic University filed Critical Fu Jen Catholic University
Priority to PCT/CN2023/135764 priority Critical patent/WO2025112021A1/fr
Publication of WO2025112021A1 publication Critical patent/WO2025112021A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00477—Coupling
    • 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
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3904—Markers, e.g. radio-opaque or breast lesions markers specially adapted for marking specified tissue
    • A61B2090/3916—Bone tissue
    • 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
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3991—Markers, e.g. radio-opaque or breast lesions markers having specific anchoring means to fixate the marker to the tissue, e.g. hooks

Definitions

  • the present disclosure generally relates to an installation for a positioning marker and, more particularly, to an installation for a positioning marker that is flexibly adjusted to accommodate surgical tools with different shapes, sizes, and specifications.
  • the positioning markers play a crucial role. It is necessary to securely affix the positioning markers at specific points to provide accurate guidance when performing a location marker.
  • currently available positioning markers cannot adapt flexibly to surgical tools with various specifications, significantly reducing convenience in use. Therefore, enhancing the flexibility of fixation devices for positioning markers while maintaining stable fixation is an important issue in the art.
  • some implementations of the present disclosure may provide an installation for securing a positioning marker onto various surgical tools.
  • the installation may be flexibly adjusted to accommodate surgical tools with different shapes, sizes, and specifications, ensuring a more secure attachment of the positioning markers to the surgical tools.
  • an installation for a positioning marker includes: a plurality of clamping plates, configured to that every clamping plate is structurally separated from each other, and by bringing together every two clamping plates to clamp a surgical tool that is required to be installed the positioning marker; a tightness adjustment module, configured to be coupled to the plurality of clamping plates for adjusting a distance between every two clamping plates; and a plurality of engaging grooves, configured between every two clamping plates for accommodating the surgical tool.
  • the installation further includes a containment module disposed between every two clamping plates, for containing the plurality of engaging grooves and adjusting positions of the plurality of engaging grooves between every two clamping plates.
  • the containment module further includes a slide groove and a slide element, wherein the slide element be used for containing the plurality of engaging grooves and may further include a slide block coupled to the slide groove to adjust the positions of the plurality of engaging grooves between every two clamping plates.
  • the installation may include two clamping plates, and one end of the two clamping plates may be coupled together as a central angle of a sector, allowing the two clamping plates to rotate along the end to approach each other for clamping the surgical tool.
  • the tightness adjustment module may include a nut and a bolt, and the distance between every two clamping plates or the two clamping plates may be adjusted by rotating the nut along the bolt.
  • one end of the bolt may penetrate through a perforation of every two clamping plates or one of the two clamping plates and then is assembled with the nut.
  • the tightness adjustment module may further include a fixing pin for restricting a range of rotating the nut along the bolt.
  • the installation may further include a marker mounting module, wherein the marker mounting module may be disposed on every two clamping plates or one of the two clamping plates or may be coupled to an installation structure of every two clamping plates or one of the two clamping plates.
  • the marker mounting module may further include a universal joint, and a mounting head may be disposed at one end of the universal joint for being coupled to the installation structure.
  • the other end of the universal joint may be coupled to the positioning marker.
  • the installation of the present disclosure may secure a positioning marker onto surgical tools, without being restricted by the specific tools defined in different medical systems.
  • the fixation may be achieved by adjusting the parallel distance or opening angle of every two clamping plates.
  • it may only require arranging a standardized installation structure on the surgical tools, allowing for easy placement and replacement of the installation to secure the positioning markers.
  • the installation of the present disclosure greatly enhances convenience and flexibility in use.
  • FIG. 1 is a perspective view of an installation, in accordance with an implementation of the present disclosure.
  • FIG. 2 is an exploded view of the installation, in accordance with the implementation of the present disclosure shown in FIG. 1.
  • FIG. 3 is a top view of the installation, in accordance with the implementation of the present disclosure shown in FIG. 1.
  • FIG. 4 is a side view of the installation, in accordance with the implementation of the present disclosure shown in FIG. 1.
  • FIG. 5 is an exploded view of a marker mounting module, in accordance with an implementation of the present disclosure.
  • FIG. 6 is an exploded view of the marker mounting module, in accordance with the implementation of the present disclosure shown in FIG. 5.
  • FIG. 7 is a perspective view of an installation, in accordance with another implementation of the present disclosure.
  • FIG. 8 is an exploded view of the installation, in accordance with the implementation of the present disclosure shown in FIG. 7.
  • FIG. 9 is a perspective view of an installation, in accordance with another implementation of the present disclosure.
  • Coupled used in the description of the disclosure is defined as connected, directly or indirectly through intervening components and is not necessarily limited to physical connections.
  • the present disclosure is generally related to an installation for a positioning marker and, more particularly, to an installation that secures the positioning marker onto any kinds of surgical tools (such as bone screws or surgical knives) .
  • the installation may comprise a tightness adjustment module and a plurality of engaging grooves, allowing the installation to be flexibly adjusted to accommodate surgical tools with varying shapes, sizes, and specifications, ensuring a more stable attachment of the positioning marker to the surgical tools.
  • the installation of the present disclosure may be utilized in medical systems, including surgical navigation systems, medical image recognition systems, or other systems that require the installation of positioning markers such as visual markers, to assist in accurately and securely installing and fixing the positioning markers in specific positions, allowing for more precise tracking and positioning of individual body parts or surgical instruments used during the operation. This is beneficial for pre-operative planning, intraoperative tracking, and post-operative observation.
  • the visual marker may be a one-dimensional barcode or a two-dimensional barcode, such as a QR code or PDF 417.
  • the installation of the present disclosure may be used in surgical navigation systems for procedures such as hip replacement surgery, knee replacement surgery, corrective osteotomy for malunion of an arm bone, distal femoral and proximal tibial osteotomy, peri-acetabular osteotomy, elbow ligament reconstruction, knee ligament reconstruction, ankle ligament reconstruction, shoulder acromioclavicular joint reconstruction, total shoulder replacement, reverse shoulder replacement, total ankle arthroplasty.
  • the installation of the present disclosure may be used in surgical navigation systems based on augmented reality (AR) , virtual reality (VR) , or mixed reality (MR) .
  • AR augmented reality
  • VR virtual reality
  • MR mixed reality
  • At least one positioning marker needs to be installed on an individual's pelvis as a reference point.
  • the pelvic bone drilling tools may be used for the purpose, allowing the individual's pelvis to be tracked as a reference point even when in motion.
  • the installation of the present disclosure may assist in securely attaching the positioning marker to the pelvic bone drilling tool.
  • a surgical tool consisting of two bone screws is often used for installation.
  • the distance between the two bone screws may vary depending on the individual, and the specifications of the bone screws themselves, such as the shape and size, may also differ. Therefore, the installation of the present disclosure may be flexibly adjusted to accommodate different scenarios of bone drilling tool usage.
  • FIG. 1 is a perspective view of an installation, in accordance with an implementation of the present disclosure
  • FIG. 2 is an exploded view of the installation, in accordance with the implementation of the present disclosure.
  • the installation 100 of the present disclosure may be used in conjunction with two bone screws (P1, P2) to secure the positioning marker in place, thus firmly affixing the positioning marker at a specific point (such as the individual's pelvis) .
  • the installation 100 of the present disclosure may be generally shaped like a long plate, with either the long side or short side roughly parallel to the bone screws (P1, P2) to clamp and secure the two bone screws (P1, P2) . It is preferred for the short side to be roughly parallel to the two bone screws (P1, P2) .
  • the installation 100 of the present disclosure may take on any shape, such as a flat rectangle, a flat trapezoid, or a flat circle, as long as it is capable of clamping and securing the two bone screws (P1, P2) .
  • the installation 100 of the present disclosure may include: at least two clamping plates (111, 112) , a tightness adjustment module (121, 122, 123) , and a plurality of engaging grooves (131, 132) .
  • each of the at least two clamping plates (111, 112) may be structurally separable from each other, and every two clamping plates may be brought close to each other to clamp the two bone screws (P1, P2) , thereby compressing and securing the two bone screws (P1, P2) .
  • the installation 100 may include two clamping plates, which may simultaneously clamp the two bone screws (P1, P2) by bringing the two clamping plates close to each other.
  • the installation 100 may include three clamping plates, and the two of them may be brought close to another one to separately clamp the two bone screws (P1, P2) .
  • the installation 100 may include four clamping plates, and they may be paired up to be brought close to each other to separately clamp the two bone screws (P1, P2) .
  • the overall shape of the at least two clamping plates (111, 112) may be roughly long and plate-like, with either the long side or the short side roughly parallel to the bone screws (P1, P2) , so as to clamp and secure the two bone screws (P1, P2) .
  • the overall shape of the at least two clamping plates may take on any shape, such as a flat rectangle, a flat trapezoid, or a flat circle, as long as they are capable of clamping and securing the two bone screws (P1, P2) .
  • the shapes and sizes of the at least two clamping plates may be similar or dissimilar, as long as they are capable of clamping and securing the two bone screws (P1, P2) .
  • the tightness adjustment module (121, 122, 123) may be coupled to the at least two clamping plates (111, 112) to adjust the distance between the clamping plates in pairs, allowing to adjust the tightness of the clamping plates when clamping the two bone screws (P1, P2) for clamping and securing the two bone screws (P1, P2) between the clamping plates.
  • the tightness adjustment module (121, 122, 123) may be implemented in the form of threaded fasteners. More specifically, the tightness adjustment module (121, 122, 123) may include a bolt 122 and a cooperated nut 121, allowing the distance between the at least two clamping plates (111, 112) to be adjusted by rotating the nut along the bolt.
  • the tightness adjustment module (121, 122, 123) may further include a fixing pin 123 to restrict the range of rotating the nut 121 along the bolt 122, thereby preventing excessive rotation that leads to the separation of the nut 121 from the bolt 122.
  • the fixing pin 123 may be structurally separable from the bolt 122. More specifically, the fixing pin 123 may be assembled onto the bolt 122 only after the bolt 122 and the nut 121 are assembled together.
  • the tightness adjustment module may be implemented in the form of other fasteners, such as adjustable (including segmented adjustment) pins or rivets.
  • one end of the bolt 122 may be coupled to one side of a clamping plate 112, and the other end may penetrate through a perforation 124 of the other clamping plate 111 before being assembled with the nut 121.
  • the distance between the two clamping plates (111, 112) may be adjusted by rotating the nut 121 along the bolt 122, so as to compress and secure the two bone screws (P1, P2) between the two clamping plates (111, 112) .
  • the fixing pin 123 may be disposed at the other end of the bolt 122 (closer to the clamping plate 112) .
  • the fixing pin 123 may be assembled on the bolt 122 after the other end of the bolt 122 is passed through the perforation 124 of the clamping plate 111 and then assembled with the nut 121.
  • the tightness adjustment module may be implemented in the form of two or more sets of threaded fasteners and may be used in conjunction with at least two clamping plates.
  • two sets of threaded fasteners may be used in conjunction with two clamping plates to adjust the distance between the two clamping plates on different sides separately; two sets of threaded fasteners may be used in conjunction with three clamping plates to adjust the distance between two clamping plates and another clamping plate separately; or two sets of threaded fasteners may be used in conjunction with four clamping plates to adjust the distance between two pairs of clamping plates separately.
  • the installation 100 of the present disclosure may further include a plurality of engaging grooves (131, 132) configured between the at least two clamping plates (111, 112) to accommodate the two bone screws (P1, P2) , making the two bone screws (P1, P2) not easy to move or shake when they are compressed and secured between the clamping plates (111, 112) .
  • the plurality of engaging grooves (131, 132) may be configured on at least one of the clamping plates (111, 112) , and each engaging groove may be connected to each other or spaced apart from each other by a predetermined distance.
  • the plurality of engaging grooves (131, 132) may be configured on additional containment elements, which may be coupled to at least one of the at least two clamping plates (111, 112) .
  • the plurality of engaging grooves (131, 132) may be elongated grooves that match the bone screws (P1, P2) , so that when the bone screws (P1, P2) are clamped, the parts in contact with the installation 100 of the present disclosure may be accommodated in the plurality of engaging grooves (131, 132) to restrict the range of movement of the bone screws (P1, P2) and achieve fixation.
  • the plurality of engaging grooves (131, 132) may be elongated grooves that are generally parallel to the long side or short side of the clamping plates (111, 112) , so as to be generally parallel to the bone screws (P1, P2) .
  • the plurality of engaging grooves (131, 132) may be elongated grooves that penetrate through their long side or short side, meaning that the length of the elongated groove is preferably equal to the long side or short side of the clamping plates (111, 112) .
  • the plurality of engaging grooves (131, 132) may be disposed along the two long sides or along the two short sides of the clamping plates (111, 112) to flexibly adjust the position of the bone screws (P1, P2) between the clamping plates (111 and 112) .
  • the plurality of engaging grooves (131, 132) may be configured generally parallel to each other.
  • the plurality of engaging grooves (131, 132) may be elongated grooves that are generally parallel to and penetrate through the short side of the clamping plates (111, 112) .
  • the elongated grooves formed by the plurality of engaging grooves (131, 132) may be recessed inward from one side of the clamping plate, which is used for clamping, with various cylinders or prisms, such as a rectangular prism, or a trapezoidal prism, preferably a triangular prism.
  • the elongated grooves formed by the plurality of engaging grooves (131, 132) are recessed inward from one side of the clamping plate, which is used for clamping, with a triangular prism shape, preferably a right-angled triangular prism, and more preferably an isosceles right-angled triangular prism.
  • a triangular prism shape preferably a right-angled triangular prism, and more preferably an isosceles right-angled triangular prism.
  • the elongated grooves formed by the plurality of engaging grooves (131, 132) may be isosceles right-angled triangular prisms recessed inward from one side of the clamping plate 112 used for clamping, and the height of the base triangle (i.e., the depth of the recess) may be 1.28 to 1.92 mm, preferably 1.6 mm.
  • the engaging grooves (131, 132) and the clamping plate 111 may form a three-point fixation on the bone screws (P1, P2) , thereby achieving a stable clamping effect.
  • the plurality of engaging grooves may be disposed on one or two of the paired clamping plates (111, 112) , especially on the side of the clamping plates (111, 112) used for clamping the bone screws (P1, P2) . More specifically, the plurality of engaging grooves may be disposed only on one clamping plate 111 or one clamping plate 112; or the plurality of engaging grooves may be disposed on two clamping plates (111, 112) , and the engaging grooves disposed on the clamping plate 111 and the engaging grooves disposed on the clamping plate 112 may correspond to each other or not correspond to each other.
  • the installation 100 of the present disclosure may further include a containment module (141, 142, 143, 144, 151, 152) disposed between the at least two clamping plates (111, 112) , and the plurality of engaging grooves (131, 132) may be disposed on the containment module.
  • the containment module (141, 142, 143, 144, 151, 152) may be used to flexibly adjust the position of the plurality of engaging grooves (131, 132) between the at least two clamping plates (111, 112) , to match the positions of the two bone screws (P1, P2) in different usage scenarios. In this case, only two engaging grooves (131, 132) corresponding to the two bone screws (P1, P2) may be provided.
  • the center-to-center distance between the two engaging grooves (131, 132) may be flexibly adjusted to be 17-37 mm; for example, when the overall shape of the at least two clamping plates (111, 112) are generally shaped like a long plate and clamp the bone screws (P1, P2) with short side roughly parallel to the bone screws (P1, P2) , the two engaging grooves (131, 132) may move along the long side of the clamping plates (111, 112) to flexibly adjust to any range between the two short sides.
  • the containment module (141, 142, 143, 144, 151, 152) may be implemented in a slide track assembly. More specifically, the containment module (141, 142, 143, 144, 151, 152) may include one or more slide grooves (141, 142) and one or more slide elements (151, 152) , and the one or more slide elements (151, 152) may include one or more slide blocks (143, 144) corresponding to the one or more slide grooves (141, 142) .
  • the one or more slide blocks (143, 144) may be slightly engaged with the one or more slide grooves (141, 142) , and may slide freely within them to adjust the position of the one or more slide blocks (143, 144) .
  • the one or more slide blocks (143, 144) may be detachably engaged with the one or more slide grooves (141, 142) .
  • the two ends of the one or more slide grooves (141, 142) may be additionally provided with protrusions to prevent the one or more slide blocks (143, 144) from disengaging when sliding.
  • the one or more slide blocks (143, 144) may slide within the range set by the one or more slide grooves (141, 142) to adjust their positions.
  • the length of the one or more slide blocks (143, 144) may be smaller than the length of the slide grooves (141, 142) , allowing the slide blocks (143, 144) to effectively adjust their positions when sliding within the slide track grooves.
  • the length of the one or more slide blocks (143, 144) may be configured in proportion to the length of the slide grooves (141, 142) at a ratio of 0.05 to 0.67 to optimize the sliding range of the slide blocks while ensuring structural stability.
  • the length of the one or more slide grooves (141, 142) may be configured between 15 to 40 millimeters to ensure effective sliding space without making the overall component too large and heavy.
  • the length of the slide blocks (143, 144) may be configured between 2 to 10 millimeters to ensure stability in engaging with the slide track grooves, while avoiding the issues of too small sliding range or excessive sliding friction.
  • the one or more slide grooves (141, 142) may be disposed on one of the paired clamping plates (111, 112) , for example, on clamping plate 111 or clamping plate 112, and the plurality of engaging grooves (131, 132) may be disposed on the one or more slide elements (151, 152) .
  • each of the slide elements (151, 152) may be equipped with the one or more engaging grooves.
  • the clamping plates (111, 112) are generally shaped like a long plate
  • the one or more slide grooves (141, 142) may be disposed on the clamping plates (111, 112) at positions equidistant from the upper and lower edges of their long or short sides.
  • a plurality of slide elements may be used with a single slide groove, and the single slide groove may be disposed on one clamping plate and used in conjunction with another one or more clamping plates.
  • the single slide groove may be disposed on one clamping plate and used with another clamping plate and two sets of threaded fasteners.
  • the length of the single slide groove may be roughly equal to or slightly smaller than the length of the clamping plate.
  • the single slide groove may be disposed on one clamping plate and used with two additional clamping plates and two sets of threaded fasteners. In this case, the length of the single slide groove may be roughly equal to or slightly smaller than the length of the clamping plate.
  • the plurality of slide elements may be used with multiple slide grooves, and the multiple slide grooves may be disposed on one clamping plate and used in conjunction with another one or more clamping plates.
  • the multiple slide grooves may be simultaneously disposed on one clamping plate and used with another one or more clamping plates and one or more sets of threaded fasteners.
  • the multiple slide grooves may be structurally separated by each set of threaded fasteners. In this case, the length of the multiple slide grooves may be roughly equal to or slightly smaller than half the length of the clamping plate.
  • the plurality of engaging grooves (131, 132) may be simultaneously disposed on one of the paired clamping plates, as well as on one slide element.
  • the plurality of engaging grooves may be directly disposed on one side (for example, the right or left side) of clamping plate 111 or clamping plate 112, and on the other side, the engaging grooves may be disposed using a containment module that allows for adjustable sliding. That is, one bone screw P1 may be clamped within the plurality of engaging grooves directly disposed on the clamping plate, while another bone screw P2 may be clamped using the containment module.
  • the length of the multiple slide grooves may be roughly equal to or slightly smaller than half the length of the clamping plate.
  • the one or more slide grooves (141, 142) may be elongated grooves roughly parallel to the long side or short side of the clamping plates (111, 112)
  • the one or more slide elements (151, 152) may be cylinders or prisms roughly perpendicular to the one or more slide grooves (141, 142) , such as a rectangular prism, or a trapezoidal prism, allowing the one or more engaging grooves to be elongated grooves roughly parallel to the long side or short side of the clamping plates (111, 112) when disposed on the one or more slide elements (151, 152) .
  • the height of the cylinders or prisms formed by the one or more slide elements may be equal to or different from the long side or short side of the clamping plates (111, 112) . In some implementations, the height of the cylinders or prisms formed by the one or more slide elements may be greater or smaller than the long side or short side of the clamping plates (111, 112) .
  • the one or more slide blocks (143, 144) may be protrusions that extend outward from the side that contacts one clamping plate, and the plurality of engaging grooves (131, 132) may be disposed on the other side relative to the side that contacts one clamping plate.
  • the height of the engaging groove may be equal to the height of the cylinders or prisms.
  • FIG. 4 is a side view of the installation, in accordance with the implementation of the present disclosure shown in FIG. 1, when the height of the cylinders or prisms formed by the one or more slide elements (151, 152) is greater than the long side or short side of the clamping plates (111, 112) , the cylinders or prisms may be recessed from the side that contacts one clamping plate to relatively form the one or more slide blocks (143, 144) and protrusions at both ends that may engaged contacted with the clamping plate, thereby increasing the clamping force between the one or more slide elements (151, 152) and the clamping plate, making it less likely for the slide grooves (141, 142) and slide blocks (143, 144) to detach or separate when assembled together.
  • the protrusions may serve as convenient points for the user to grip when adjusting the slide elements (151, 152) .
  • the plurality of engaging grooves (131, 132) may be disposed on the other side relative to the side that contacts one clamping plate, and the height of the engaging grooves may be equal to the height of the cylinders or prisms.
  • the one or more slide grooves (141, 142) may form elongated grooves with an opening (also referred to herein as a neck) where the width is smaller than the overall groove width. More specifically, the one or more slide grooves (141, 142) may be elongated grooves with an overall width of 4 to 6 millimeters and an inwardly recessed depth of 2.4 to 3.6 millimeters from the side of a clamping plate, and may form an opening with a width of 1.6 to 2.4 millimeter near the side of the clamping plate.
  • the one or more slide grooves may form elongated grooves with an overall width of 5 millimeters and an inwardly recessed depth of 3 millimeters from the side of a clamping plate; the head to neck may be a ratio of 100% ⁇ 20%within the 3 millimeters, for example, with the head being 1.6 millimeters and the neck being 1.4 millimeters; and may form an opening with a width of 2 millimeter near the side of the clamping plate.
  • the dimensional difference created by the elongated grooves with an opening narrower than the overall groove width makes it less likely for the one or more slide grooves (141, 142) and the one or more slide blocks (143, 144) to detach and separate when assembled together, and also allows the slide blocks (143, 144) to slide smoothly in the slide grooves (141, 142) without getting stuck.
  • the one or more slide blocks (143, 144) may form a structure where the front is wider than the back along the direction from the side contacting a clamping plate to the side not in contact to match the slide grooves with a smaller opening width. More specifically, the one or more slide blocks (143, 144) may roughly form blocks with a head width greater than the neck width, allowing them to slightly engage in the slide grooves (141, 142) with a smaller opening width and slide freely to adjust the positions of the one or more slide blocks (143, 144) .
  • the slide blocks (143, 144) may be blocks with an overall width of 3.76 to 5.64 millimeters, and the head width thereof may be 3.76 to 5.64 millimeters, and the neck width thereof may be 1.59 to 2.39 millimeters to match the slide grooves with smaller opening widths.
  • the head and neck of the slide blocks (143, 144) may have different thicknesses to correspond to the recess depth and opening of the aforementioned slide grooves.
  • the head thickness may be 0.96 to 1.44 millimeters
  • the neck thickness may be 1.36 to 2.04 millimeters, resulting in an overall thickness of the slide blocks of 2.32 to 3.48 millimeters.
  • the one or more slide blocks (143, 144) may form blocks with an overall width of 4.7 millimeters, where the head width is 4.7 millimeters, the neck width is 2.0 millimeters, the head thickness is 1.7 millimeters, and the neck thickness is 1.2 millimeters.
  • This type of blocks with a wider front and narrower back in conjunction with the slide grooves with a smaller opening width allows the slide blocks to slide freely in the slide grooves before being tightly locked with the tightness adjustment module (121, 122, 123) , and when they are tightly locked together, the friction between the slide elements (151, 152) and the contact surface of the clamping plate is increased, allowing the slide elements to be more securely fixed on the clamping plate. Additionally, due to force transfer, the stress on the slide blocks may be reduced, thus preventing deformation and prolonging the lifespan of the slide blocks.
  • the positioning markers used for pelvic positioning may be integrally formed on one of the clamping plates of the installation 100.
  • FIG. 5 is an exploded view of a marker mounting module, in accordance with an implementation of the present disclosure
  • FIG. 6 is an exploded view of the marker mounting module, in accordance with the implementation.
  • the installation 100 of the present disclosure may further include a marker mounting module 410 for coupling the positioning marker to one of the clamping plates.
  • the marker mounting module may include a universal joint 411, one end of which may include a mounting head 412, and the other end may be coupled to the positioning marker.
  • the marker mounting module 410 may further include a marking element 413 for adhering or engraving the positioning marker, and the marking element 413 may be coupled to the other end of the universal joint 411.
  • the marking element 413 may be coupled to the universal joint 411 in the form of a universal joint.
  • one end of the marking element 413 coupled to the universal joint 411 may be a sphere, and the other end of the universal joint 411 may be a hollow cylinder large enough to accommodate part or all of the sphere, allowing the sphere to rotate freely inside.
  • the sphere may be firmly secured in a specific position by multiple screws (411A, 411B) penetrating through the side wall of the hollow cylinder, preventing the positioning marker from easily shifting with movement.
  • the marking element 413 may form a sphere with a radius of 7.9 millimeters to be coupled to one end of the universal joint 411, while the other end of the universal joint 411 may form a hollow cylinder with an inner diameter of 16 millimeters, an outer diameter of 22 millimeters, and a thickness of 3.0 millimeters, to accommodate part or all of the sphere.
  • two screws (411A, 411B) may be used to penetrate through the hollow cylinder formed at the other end of the universal joint 411 to secure the sphere formed by the marking element 413, where the two screws (411A, 411B) may be the same or different.
  • both screws (411A, 411B) may have a shaft diameter of M5 and a length of 10 millimeters.
  • the other end of the marking element 413 may be used for adhering or engraving the positioning marker and may be implemented in the form of a cube, a cuboid, a triangular trapezoid, or the like.
  • the positioning marker may be adhered or engraved on five faces of the cube to increase the likelihood of identification and tracking.
  • the marking element 413 may further include a marking shaft 4131 and a marking carrier 4132; where one end of the marking shaft 4131 may be coupled to the universal joint 411 and may form the aforementioned sphere; the marking carrier 4132 may be removably coupled to the other end of the marking shaft 4131, and used for adhering or engraving the positioning marker, allowing for replacement of any positioning markers by disassembling the marking carrier 4132.
  • the at least two clamping plates may further include an installation structure 161, which correspond to the mounting head 412 in structure and may be tightly coupled together.
  • the installation structure 161 may be configured with its center point located at the center or either end of one of the at least two clamping plates, allowing the user to operate more conveniently.
  • the installation structure 161 and the mounting head 412 may be implemented in a tenon-and-mortise structure. More specifically, the installation structure 161 may be a cylinder or prism, such as a rectangular prism, or straight cylinder, while the mounting head 412 may be a structure complementary to the cylinder or prism, such as a rectangular prism hole or a straight cylinder hole.
  • the mounting head 412 may be a cylinder or prism, while the installation structure 161 may be a structure complementary to the cylinder or prism.
  • the mounting head 412 may be a hexagonal prism, and the installation structure 161 may be a structure complementary to the hexagonal prism, such as a hexagonal prism hole. Assembling with a hexagonal prism structure not only provides sufficient stability when coupling the marker mounting module 410 to the clamping plate, but also reduces the likelihood of breakage at the coupling site, and the interlocking of hexagonal prism structures prevents vertical or rotational displacement due to movement during surgery.
  • the height of the hexagonal prism may be 5.6 to 8.4 millimeters, and each side length of the bottom surface may be HEX 4.8 to 6.0. In another more preferred implementation, the height of the hexagonal prism may be 7 millimeters, and each side length of the bottom surface may be HEX 5.0. In another preferred implementation, the depth range of the hexagonal prism hole may be 5 to 15 millimeters to optimize the stability when coupling.
  • At least one positioning marker needs to be installed on an acetabular cup impactor to track the position of the acetabular cup impactor in real-time, thereby improving the accuracy of the surgery.
  • other surgical tools such as positioning marker registration pointer may also be needed to assist in surgical navigation.
  • the installation of the present disclosure may assist in securely fastening the positioning marker to these surgical tools.
  • these surgical tools may have different shapes, sizes, and specifications, and the same type of surgical tool from different manufacturers may also have different specifications. Therefore, the installation of the present disclosure may be flexibly adjusted to accommodate the surgical tools with different specifications or from different manufacturers.
  • FIG. 7 is a perspective view of an installation, in accordance with another implementation of the present disclosure
  • FIG. 8 is an exploded view of the installation, in accordance with the implementation of the present disclosure.
  • the installation 200 of the present disclosure may be used in conjunction with a surgical tool P3 that is partially or entirely shaped like a columnar to secure the positioning marker in place, thus firmly affixing the positioning marker at a specific point (such as the acetabular cup impactor or the positioning marker registration pointer) .
  • the installation 200 of the present disclosure may be generally shaped like a long plate, with either the long side or short side roughly parallel to the long axis of the surgical tool P3 to clamp and secure the surgical tool P3. It is preferred for the short side to be roughly parallel to the long axis of the surgical tool P3.
  • the installation 200 of the present disclosure may take on any shape, such as a flat rectangle, a flat trapezoid, or a flat circle, as long as it is capable of clamping and securing the surgical tool P3.
  • the installation 200 of the present disclosure may include: two clamping plates (211, 212) , a tightness adjustment module (221, 222, 223) , and a plurality of engaging grooves (231, 232) .
  • the two clamping plates (211, 212) may be structurally separate from each other, and one end of the two clamping plates (211, 212) may be coupled together as a central angle of a sector, allowing the two clamping plates (211, 212) to rotate along the central angle, thereby approaching each other to compress and secure the surgical tool P3 for clamping the surgical tool P3.
  • the overall shape of the two clamping plates (211, 212) may be roughly long and plate-like, with either the long side or the short side roughly parallel to the long axis of the surgical tool P3, so as to clamp and secure the surgical tool P3.
  • the overall shape of the two clamping plates (211, 212) may take on any shape, such as a flat rectangle, a flat trapezoid, or a flat circle, as long as they are capable of clamping and securing the surgical tool P3.
  • the shapes and sizes of the two clamping plates may be similar or dissimilar, as long as they are capable of clamping and securing the surgical tool P3.
  • the thickness of the two clamping plates (211, 212) may be at least 6 millimeters, to more effectively transmit the clamping force when the surgical tool P3 is clamped and secured by the two clamping plates (211, 212) .
  • the installation 200 of the present disclosure may further include a pivot module (271, 272, 273) to couple one end of the two clamping plates (211, 212) together, and allow them to rotate along the central angle of the sector formed by the coupled end to adjust the opening range of the two clamping plates (211, 212) .
  • the pivot module (271, 272, 273) may include a first hole 271 disposed at one end of the clamping plate 211, a second hole 272 disposed at one end of the clamping plate 221, and a pivot 273 penetrating through both the first hole 271 and the second hole 272.
  • the pivot 273 is penetrated through both the first hole 271 and the second hole 272 to couple the two clamping plates (211, 212) together, allowing them to rotate along the coupled end to adjust the distance between the two clamping plates (211, 212) .
  • first hole 271 and the second hole 272 may be generally cylindrical holes, and the pivot 273 may be generally cylindrical in shape.
  • the first hole 271 and the second hole 272 may each be a single cylindrical hole, and the first hole 271 may be staggered vertically from the second hole 272, and thus, when they are aligned and assembled with the pivot 273, the two clamping plates (211, 212) may still have sufficient contact area to clamp the surgical tool P3.
  • the first hole 271 may be a single cylindrical hole, and the second hole 272 may consist of two separate cylindrical holes, and the first hole 271 may be disposed between the two cylindrical holes formed by the second hole 272, and thus, when they are aligned and assembled with the pivot 273, the two clamping plates (211, 212) are more securely coupled together, while still have sufficient contact area to clamp the surgical tool P3.
  • the tightness adjustment module (221, 222, 223) may be coupled to the two clamping plates (211, 212) to adjust the distance between the two clamping plates (211, 212) , allowing to adjust the tightness of the clamping plates when clamping the surgical tool P3 for clamping and securing the surgical tool P3 between the two clamping plates (211, 212) .
  • the tightness adjustment module (221, 222, 223) may be implemented in the form of threaded fasteners. More specifically, the tightness adjustment module (221, 222, 223) may include a bolt 222 and a cooperated nut 221, allowing the distance between the two clamping plates (211, 212) to be adjusted by rotating the nut along the bolt.
  • the tightness adjustment module (221, 222, 223) may further include a fixing pin 223 to restrict the range of rotating the nut 221 along the bolt 222, thereby preventing excessive rotation that leads to the separation of the nut 221 from the bolt 222.
  • the fixing pin 223 may be structurally separable from the bolt 222. More specifically, the fixing pin 223 may be assembled onto the bolt 222 only after the bolt 222 and the nut 221 are assembled together.
  • the tightness adjustment module may be implemented in the form of other fasteners, such as adjustable (including segmented adjustment) pins or rivets.
  • one end of the bolt 222 may be coupled to one side of a clamping plate 212, and the other end may penetrate through a perforation 224 of the other clamping plate 211 before being assembled with the nut 221.
  • one end of the bolt 222 may penetrate through a perforation 225 of a clamping plate 212, and the other end may penetrate through the perforation 224 of another clamping plate 211 before being assembled with the nut 221.
  • the distance between the two clamping plates (211, 212) may be adjusted by rotating the nut 221 along the bolt 222, so as to compress and secure the surgical tool P3 between the two clamping plates (211, 212) .
  • the fixing pin 223 may be disposed at the other end of the bolt 222 (closer to the clamping plate 212) . In some implementations, the fixing pin 223 may be assembled on the bolt 222 after the other end of the bolt 222 is passed through the perforation 224 of the clamping plate 211 and then assembled with the nut 221.
  • the size of the perforation 224 may be equal to or different from the size of the perforation 225.
  • the perforation 224 may be a long-stripped hole formed along the short side or long side of the clamping plate 211, allowing the bolt 222 to slide between the long-stripped hole to provide different levels of tension on the surgical tool P3 when clamped by the two clamping plates (211, 212) .
  • the overall opening distance between the two clamping plates (211, 212) may be increased to at least 10 millimeters to accommodate the surgical tool P3 with different sizes, and by increasing the effective thread length of the bolt 222 may further increase the range of the overall opening distance between the two clamping plates (211, 212) .
  • the installation 200 of the present disclosure may further include one or more engaging grooves (231, 232) configured between the two clamping plates (211, 212) to accommodate the surgical tool P3, making the surgical tool P3 not easy to move or shake when they are compressed and secured between the clamping plates (211, 212) .
  • the one or more engaging grooves (231, 232) may be elongated grooves that match the surgical tool P3, so that when the surgical tool P3 are clamped, the parts in contact with the installation 200 of the present disclosure may be accommodated in the one or more engaging grooves (131, 132) .
  • the one or more engaging grooves (231, 232) may be elongated grooves that are generally parallel to the long side or short side of the two clamping plates (211, 212) , and preferably, the elongated grooves that penetrate through their long side or short side, meaning that the length of the elongated groove is preferably equal to the long side or short side of the two clamping plates (211, 212) .
  • the more engaging grooves (231, 232) may be configured generally parallel to each other.
  • the one or more engaging grooves may be disposed on one or two of the two clamping plates (211, 212) , especially on the side of the two clamping plates (211, 212) used for clamping the surgical tool P3. More specifically, the one or more engaging grooves may be disposed only on one clamping plate 211 or one clamping plate 212; or the one or more engaging grooves may be disposed on both two clamping plates (211, 212) , and the engaging grooves disposed on the clamping plate 211 and the engaging grooves disposed on the clamping plate 212 may correspond to each other or not correspond to each other.
  • the two clamping plates may further include an installation structure 261 that corresponds to the mounting head 412 in structure and may be coupled together to assemble the universal joint 411 on the two clamping plates.
  • the installation structure 261 has a similar composition and structure to the previously mentioned installation structure 161, so it is not repeated herein.
  • the installation structure 363 may be directly disposed on a surgical tool P4 such as an acetabular cup impactor or a positioning marker registration pointer.
  • the positioning marker may be fixed on the surgical tool P4 through the mounting head 412 of the universal joint 411.
  • the installation structure 363 has a similar composition and structure to the previously mentioned installation structures 161 and 261, so it is not repeated herein.
  • the present disclosure achieves an optimal balance between stability and lightweight design by optimizing the structure or proportions of each component.
  • the installation of the present disclosure may secure a positioning marker onto surgical tools, without being restricted by the specific tools defined in different medical systems.
  • the fixation may be achieved by adjusting the parallel distance or opening angle of every two clamping plates.
  • it may only require arranging a standardized installation structure on the surgical tools, allowing for easy placement and replacement of the installation to secure the positioning markers.
  • the installation of the present disclosure greatly enhances convenience and flexibility in use.

Landscapes

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

Abstract

L'invention concerne une installation pour marqueurs de positionnement. L'installation comprend : une pluralité de plaques de serrage, configurées pour que chaque plaque de serrage soit structurellement séparée l'une de l'autre, et en rapprochant toutes les deux plaques de serrage pour serrer un outil chirurgical qui doit être installé le marqueur de positionnement; un module de réglage d'étanchéité, configuré pour être couplé à la pluralité de plaques de serrage pour ajuster une distance entre chaque paire de plaques de serrage; et une pluralité de rainures de mise en prise, configurées entre chaque paire de plaques de serrage pour recevoir l'outil chirurgical.
PCT/CN2023/135764 2023-12-01 2023-12-01 Installation pour marqueurs de positionnement Pending WO2025112021A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/135764 WO2025112021A1 (fr) 2023-12-01 2023-12-01 Installation pour marqueurs de positionnement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/135764 WO2025112021A1 (fr) 2023-12-01 2023-12-01 Installation pour marqueurs de positionnement

Publications (1)

Publication Number Publication Date
WO2025112021A1 true WO2025112021A1 (fr) 2025-06-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/135764 Pending WO2025112021A1 (fr) 2023-12-01 2023-12-01 Installation pour marqueurs de positionnement

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WO (1) WO2025112021A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221419A (en) * 1977-02-19 1980-09-09 Keith Riley Gripping devices
US20160242934A1 (en) * 2015-02-20 2016-08-25 OrthAlign, Inc. Hip replacement navigation system and method
DE102015104223A1 (de) * 2015-03-20 2016-09-22 Aesculap Ag Medizinisches Instrument
CN215080500U (zh) * 2021-05-14 2021-12-10 湖南品伟生物科技有限公司 一种医用骨科夹板机构
CN114431958A (zh) * 2022-02-08 2022-05-06 上海电气集团股份有限公司 人体跟踪装置
CN116066703A (zh) * 2023-01-30 2023-05-05 北京玛格纳科技有限公司 示踪器的锁紧装置及示踪器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221419A (en) * 1977-02-19 1980-09-09 Keith Riley Gripping devices
US20160242934A1 (en) * 2015-02-20 2016-08-25 OrthAlign, Inc. Hip replacement navigation system and method
DE102015104223A1 (de) * 2015-03-20 2016-09-22 Aesculap Ag Medizinisches Instrument
CN215080500U (zh) * 2021-05-14 2021-12-10 湖南品伟生物科技有限公司 一种医用骨科夹板机构
CN114431958A (zh) * 2022-02-08 2022-05-06 上海电气集团股份有限公司 人体跟踪装置
CN116066703A (zh) * 2023-01-30 2023-05-05 北京玛格纳科技有限公司 示踪器的锁紧装置及示踪器

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