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3D printing personalized anterior cruciate ligament reconstruction tibial tunnel positioner and preparation method thereof

An anterior cruciate ligament, 3D printing technology, applied in medical science, surgery and other directions, to achieve the effect of simple operation, improved surgical efficiency, and strong popularization

Pending Publication Date: 2019-09-03
FIRST AFFILIATED HOSPITAL OF KUNMING MEDICAL UNIV
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Problems solved by technology

We have done a lot of research on the ACL three-dimensional model and virtual surgery in the early stage, and developed a 3D printed personalized anterior cruciate ligament reconstruction femoral tunnel positioner, which has been successfully applied in clinical operations, enabling arthroscopic ACL reconstruction surgery The positioning accuracy of the femoral tunnel is significantly improved, but we found that there is still a lack of a device for accurately and quantitatively positioning the tibial tunnel, so we developed a 3D printed personalized tibial tunnel locator for anterior cruciate ligament reconstruction, which is suitable for personalized anterior cruciate ligament reconstruction. cruciate ligament reconstruction, anterior cruciate ligament revision

Method used

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  • 3D printing personalized anterior cruciate ligament reconstruction tibial tunnel positioner and preparation method thereof
  • 3D printing personalized anterior cruciate ligament reconstruction tibial tunnel positioner and preparation method thereof
  • 3D printing personalized anterior cruciate ligament reconstruction tibial tunnel positioner and preparation method thereof

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the examples.

[0051] Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be considered as limiting the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification. The parts and instruments used are those whose manufacturers are not indicated, and they are all conventional products that can be obtained through purchase.

[0052] 1 Three-dimensional modeling of knee joint ACL before operation

[0053] (1) Before operation, CT and MRI examinations were performed on both knee joints in straight position, and the images were stored in DICOM format on the workstation and burned to CD-ROM (MRI: use 1.5T or 3.0T nuclear magnetic...

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Abstract

The invention relates to a 3D printing personalized anterior cruciate ligament reconstruction tibial tunnel positioner and a preparation method thereof, which belong to the technical field of an arthroscopic surgery. The positioner is personalized according to the preoperative CT and MRI data of a patient, and printing and molding can be quickly performed by a 3D printer, and the anterior cruciateligament tunnel can be accurately positioned through a minimally invasive surgical incision of an arthroscope. The positioner includes a bone fitting portion, a slotted positioning tube and a slot cover: the bone fitting portion adopts contact fit positioning design of a tibial tuberosity and a tibia inner side, and a positioning point of the positioning tube is personalized according to the patient's preoperative three-dimensional reconstruction data, the side of the positioning tube has a notch to facilitate the removal of the positioner after a Kuntscher needle is inserted, and a baffle plate fits with the notch of the positioner to reduce the Kirkner needle insertion error. The personalized anterior cruciate ligament reconstruction tibial tunnel positioner structure is simple and novel, and is suitable for personalized anterior cruciate ligament reconstruction and anterior cruciate ligament revision.

Description

technical field [0001] The invention belongs to the technical field of arthroscopic surgery, in particular to a 3D printed personalized anterior cruciate ligament reconstruction tibial tunnel locator and a preparation method thereof. Background technique [0002] Anterior cruciate ligament (ACL) injury is a common sports injury, which can lead to instability of the knee joint, often accompanied by damage to the meniscus and articular cartilage, and can lead to traumatic arthritis and accelerated joint degeneration in the advanced stage. changes, affecting the patient's quality of life. Arthroscopic ACL reconstruction is the best option for restoring knee function. [0003] Only reconstruction close to the actual anatomical position of the ACL can restore the anatomical structure and function of the knee joint to the greatest extent. ACL anatomical reconstruction is to perform functional reconstruction according to the anatomical characteristics of the ACL, so as to restore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61B17/00
CPCA61B17/00A61B17/56A61B2017/564A61B2017/568
Inventor 李彦林余洋韩睿何川王国梁蔡国锋
Owner FIRST AFFILIATED HOSPITAL OF KUNMING MEDICAL UNIV
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