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Bone tunnel expander and preparation method of detachable adapter of bone tunnel expander

A technology of connectors and expanders, which is applied in the field of medical devices, can solve the problems that the anatomical imprint cannot be completely restored after surgery, and achieve the effects of restoring anatomical imprint, strong ligament resistance to traction, and promoting rehabilitation

Pending Publication Date: 2017-03-15
CHONGQING RONGAN MEDICAL APP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, 99.9% of the surgical tunnels were circular, but the original ligament imprint was oval, so the operation could not completely restore the original anatomical imprint

Method used

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  • Bone tunnel expander and preparation method of detachable adapter of bone tunnel expander
  • Bone tunnel expander and preparation method of detachable adapter of bone tunnel expander
  • Bone tunnel expander and preparation method of detachable adapter of bone tunnel expander

Examples

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Effect test

no. 1 example

[0033] Please refer to Figure 1-Figure 3 , the present embodiment provides a bone tunnel expander 100a, which includes a connecting head 110, a connecting body 120 and a handle part 130, and the connecting head 110 and the handle part 130 are respectively arranged at two ends of the connecting body 120. The cross section of the connecting head 110 is elliptical, and a connecting hole 114 is provided on the connecting head 110, and the connecting hole 114 is used for connecting with a guide pin perforated at the imprint of the anterior cruciate ligament.

[0034] The imprint of the anterior cruciate ligament refers to the imprint of the anterior cruciate ligament 161 at the femur, and the imprint is oval. Specifically, the anterior cruciate ligament 161 is located above the inner meniscus 162 and the outer meniscus 164, and the imprint of the anterior cruciate ligament 161 on the femur is oval. The oval cross-section of the connector 110 is sized to match the oval footprint o...

no. 2 example

[0051] Please refer to Figure 5 with Image 6 , the present embodiment provides a bone tunnel expander 100b, which has substantially the same structure as the bone tunnel expander 100a of the first embodiment, the difference between the two is that the scale 112 of the bone tunnel expander 100b of the present embodiment adopts a measuring grid 119 ways to set.

[0052] Specifically, the scale 112 includes a plurality of measuring grids 119 parallel to each other, and the width of each measuring grid 119 is 2-3 mm. The scale 112 is set as a plurality of measuring grids 119, compared with the method of only having an arc-shaped scale in Embodiment 1, it can be more beneficial to accurately measure the drilling depth during the operation, so that the operation can be performed more accurately.

[0053] In addition, in other embodiments, the connection body 120 and the handle part 130 may be configured to be detachably connected. Specifically, the thread connection method of t...

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Abstract

The invention discloses a bone tunnel expander and a preparation method of a detachable adapter of the bone tunnel expander and relates to the field of medical appliances. The bone tunnel expander comprises the adapter, a connecting body and a handle part, wherein the adapter and the handle part are separately arranged at two ends of the connecting body, the cross section of the adapter is elliptical, the elliptical size is matched with that of an elliptical anterior cruciate ligament mark at a thighbone, and a connecting hole which is used for being connected with a guide pin, which is used for perforating the anterior cruciate ligament mark position, is formed in a free end of the adapter. The adapter is in line with the anterior cruciate ligament mark of a human body, so that dissection marks can be restored to greater extent, and physiological restoration is achieved. The preparation method of the detachable adapter of the bone tunnel expander comprises the steps of measuring the size of the anterior cruciate ligament mark of a patient at the beginning of surgery and preparing the adapter of the bone tunnel expander through a 3D printing system. Customized detachable adapters which are in line with sizes of anterior cruciate ligament marks of patients can be manufactured through a 3D printing technique according to individual differences of the patients.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a preparation method of a bone tunnel expander and a detachable connector thereof. Background technique [0002] The anterior cruciate ligament (ACL) cannot heal naturally after injury, and the torn anterior cruciate ligament generally cannot be sutured again. Therefore, it is necessary to take a tendon from other parts of the patient's own leg and make a tunnel at the original mark of the anterior cruciate ligament. Use a bone tunnel expander to connect the guide pin to create a 3cm tunnel in the femur, and then open it with an electric drill to connect it to the femur and tibia for ligament reconstruction. In the past, 99.9% of the surgical tunnels were circular, but the original ligament imprint was oval, so the operation could not completely restore the original anatomical imprint. Contents of the invention [0003] The purpose of the present invention is to provide a bone t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/16
CPCA61B17/1604A61B17/1659A61B17/1675
Inventor 张华
Owner CHONGQING RONGAN MEDICAL APP CO LTD
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