Femoral condyle drilling direction indicating device

Abstract

The utility model relates to a femoral condyle drilling direction indicating device. Belongs to the technical field of medical instruments. The femoral condyle drilling direction indicating device comprises a drilling sleeve, a pointing needle catheter and a connecting arm, the drilling sleeve, the pointing needle catheter and the connecting arm are connected into an integrated structure, the drilling sleeve and the pointing needle catheter are coaxial on the same straight line, the inner diameter of the drilling sleeve is 0.2 cm, and the inner diameter of the pointing needle catheter is 0.12 cm. When the device is used, a drilling rod is sleeved with the drilling sleeve of the device, a drilling point is selected by the drill bit, the kirschner wire 5 with the diameter of 0.12 cm is inserted into the pointing needle guide pipe, the needle point is always in contact with the skin of the lateral condyle of the femur, the direction of the drilling rod is adjusted to enable the kirschner wire needle point to move to an expected drill bit skin outlet point, and an expected hole channel can be drilled by keeping drilling in the direction. The femur condyle drilling direction indicating device can indicate the femur lateral condyle drilling direction in real time in an anterior cruciate ligament reconstruction operation, deviation between the actual drilling direction and the expected drilling direction is avoided, and the one-time drilling success rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to a femoral condyle drilling direction indicating device. BACKGROUND

[0002] In the anterior cruciate ligament reconstruction surgery, it needs to drill from inside to outside on the inner surface of the femoral condyle. When drilling by hand, the actual drilling direction often deviates from the expected drilling direction, and repeated correction of drilling not only prolongs the operation time, but also increases the bone destruction of the condyle, and even affects the subsequent ligament fixation and operation quality. SUMMARY

[0003] The utility model discloses a kind of auxiliary instruments that can indicate the drilling direction from inside to outside on the inner surface of the femoral condyle in the anterior cruciate ligament reconstruction surgery in real time. Deviation between actual drilling direction and expected drilling direction is avoided, drilling success rate is improved, and operation time is shortened. To solve the above technical problems, the technical scheme provided by the utility model is: a femoral condyle drilling direction indicating device, including drilling sleeve, pointing needle catheter and connecting arm;Its characterized in that: the drilling sleeve, pointing needle catheter, all are cylindrical tubular, the connecting arm is "concave" plate, including drilling sleeve end arm, pointing needle catheter end arm and horizontal connection part;The femoral condyle drilling direction indicating device is the integrated structure that drilling sleeve, pointing needle catheter and "concave" connecting arm are connected, drilling sleeve, pointing needle catheter are coaxial on a straight line, drilling sleeve is 5cm long, outer diameter is 0.5cm, inner diameter is 0.2cm, pointing needle catheter is 3cm long, outer diameter is 0.5cm, inner diameter is 0.12cm, "concave" connecting arm is 0.2cm thick, drilling sleeve end arm, pointing needle catheter end arm are all 1cm wide, 7cm long, horizontal connection part is 1cm wide, 28cm long.

[0004] The femoral condyle drilling direction indicating device provided by the utility model can indicate drilling direction in real time when drilling from inside to outside on the inner surface of the femoral condyle, avoid deviation between actual drilling direction and expected drilling direction, improve drilling success rate, and shorten operation time. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1 It is the overall structure schematic diagram of the utility model.

[0006] Figure 2 It is the working state schematic diagram. DETAILED DESCRIPTION

[0007] The utility model is through following technical scheme to realize invention purpose: according to the anatomical form of femoral condyle, combining the operation requirement of drilling from inside to outside on the inner surface of the femoral condyle, design and manufacture this instrument, such as Figure 1As shown, the femoral condyle drilling direction indicator device is an integrated structure consisting of a drilling sleeve 1, a pointing needle catheter 2 and a "concave" connecting arm 3 made of stainless steel. The drilling sleeve and the pointing needle catheter are coaxial in a straight line. The drilling sleeve is 5 cm long, with an outer diameter of 0.5 cm and an inner diameter of 0.2 cm. The pointing needle catheter is 3 cm long, with an outer diameter of 0.5 cm and an inner diameter of 0.12 cm. The "concave" connecting arm is 0.2 cm thick. The end arms of the drilling sleeve and the pointing needle catheter are both 1 cm wide and 7 cm long. The cross-connection is 1 cm wide and 28 cm long.

[0008] like Figure 2 As shown, based on the integrated structure of the aforementioned drilling sleeve 1, the directional needle catheter 2 and the "concave" connecting arm 3, the drilling sleeve and the directional needle catheter are coaxial on a straight line, which ensures that the bone drill 4 passing through the drilling sleeve 1 is naturally on the same straight line as the directional Kirschner wire 5 passing through the directional needle catheter 2. This is a key design of the present invention.

[0009] During surgery, the device's drilling cannula is placed over a 0.2cm diameter drill rod. After the drill bit selects a drilling point on the inner surface of the lateral femoral condyle, a 0.12cm diameter Kirschner wire is inserted into the directional needle guide. The Kirschner wire slides within the directional needle guide, ensuring that the needle tip always touches the skin of the lateral femoral condyle. This is another key design feature of the utility model. By adjusting the drill rod's direction so that the directional Kirschner wire tip reaches the desired drill bit exit point, maintaining this orientation, the desired hole can be drilled.

[0010] The device is easy to manufacture and is economical and practical.

Claims

1. A femoral condyle drilling direction indicator device, comprising a drilling cannula, a pointing needle catheter, and a connecting arm; characterized in that: The drilling sleeve and the pointing needle catheter are both cylindrical tubes, and the connecting arm is in the shape of a "concave" plate, including a drilling sleeve end arm, a pointing needle catheter end arm and a cross-connecting part; the femoral condyle drilling direction indicator device is an integrated structure connected by a drilling sleeve, a pointing needle catheter and a "concave" connecting arm. The drilling sleeve and the pointing needle catheter are coaxial on a straight line. The drilling sleeve is 5 cm long, with an outer diameter of 0.5 cm and an inner diameter of 0.2 cm. The pointing needle catheter is 3 cm long, with an outer diameter of 0.5 cm and an inner diameter of 0.12 cm. The "concave" connecting arm is 0.2 cm thick. The drilling sleeve end arm and the pointing needle catheter end arm are both 1 cm wide and 7 cm long. The cross-connecting part is 1 cm wide and 28 cm long.

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