Nautilus type orthopedic guider

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a nautilus type orthopedic guider. The nautilus type orthopedic guider is characterized in that the nautilus type orthopedic guider comprises a thick cylinder, a through central kirschner wire guide hole is formed in the center of the thick cylinder, and a plurality of peripheral kirschner wire guide holes with the same diameter are formed around the central kirschner wire guide hole; the included angle between the connecting lines of the centers of every two adjacent peripheral kirschner wire guide holes and the center of the central kirschner wire guide hole is 45 degrees, and the distances from the centers of the peripheral kirschner wire guide holes to the center of the central kirschner wire guide hole are sequentially increased. The arthroscope needle insertion positioning device is reasonable in structure, can effectively solve the problem of fixing failure caused by blindness and randomness of needle insertion positioning under the guidance of a plurality of peripheral guide holes, saves consumables, facilitates development of arthroscope surgery towards the precision and individuation direction, can greatly shorten the surgery time, and remarkably solves the existing problems in clinic.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments and orthopedic surgical instruments, and specifically relates to a nautilus-type orthopedic guide, which is an arthroscopic auxiliary instrument. Background Art

[0002] Arthroscopic technology is currently widely used in the treatment of joint diseases. This technology makes a tiny incision on the skin, places the arthroscope into the joint, and connects the camera and display equipment behind it. It can directly observe the morphology and lesions in the joint, and treat the diseases in the joint by using special instruments, thus avoiding many joint incisions. Arthroscopy is suitable for the diagnosis and treatment of many diseases such as meniscus injury of the knee, anterior and posterior cruciate ligament rupture, articular cartilage injury, loose bodies, osteoarthritis, inflammatory joints, pigmented villonodular synovitis, crystalline arthropathy, infectious arthritis and traumatic arthritis. Some patients can get up and move after anesthesia, which has obvious technical advantages compared with other treatment methods. At the same time, for the diagnosis of difficult joint diseases, arthroscopic surgery can often achieve immediate results.

[0003] At present, the development of arthroscopic auxiliary instruments is still imperfect, and tools for precise positioning and distance measurement under arthroscopy have yet to be developed. Especially when performing meniscus suturing, there is still a certain degree of blindness and randomness in the positioning of the needle, which can only be judged by the surgeon's feeling and experience, or completed under the rough estimation of the arthroscopic probe hook. These factors may cause the positioning guide needle to not be introduced to the correct position and angle, which brings great difficulties to the implantation of the fixed anchor, and may cause multiple attempts to insert the positioning guide needle. This not only greatly prolongs the operation time, but may even cause additional damage to the patient during multiple positioning, and may make the fixed anchor unable to be fixed or unable to be stably fixed. Utility Model Content

[0004] The utility model aims to provide a nautilus-type orthopedic guide for arthroscopic auxiliary positioning and fixation, which has reasonable structure, convenient operation and good working effect.

[0005] The technical solution of the utility model is:

[0006] A nautilus-type orthopedic guide comprises a thick cylindrical body, wherein a through central Kirschner wire guide hole is provided at the center of the thick cylindrical body, and a plurality of peripheral Kirschner wire guide holes with the same diameter are arranged around the central Kirschner wire guide hole, wherein the angle between the center of two adjacent peripheral Kirschner wire guide holes and the center of the central Kirschner wire guide hole is 45°, and the distances from the centers of the plurality of peripheral Kirschner wire guide holes to the center of the central Kirschner wire guide hole increase successively.

[0007] Preferably, the number of the peripheral Kirschner wire guide holes is 8.

[0008] Preferably, the distances from the centers of the multiple peripheral Kirschner wire guide holes to the center of the central Kirschner wire guide hole increase sequentially, including: the distance between the nearest peripheral Kirschner wire guide hole and the central Kirschner wire guide hole is 3.5 mm, and then increases by 0.5 mm, until the distance between the farthest peripheral Kirschner wire guide hole and the central Kirschner wire guide hole is 7 mm.

[0009] Preferably, the diameter of the cross section of the rough cylinder is 20 mm.

[0010] Preferably, the diameters of the central Kirschner wire guide hole and the peripheral Kirschner wire guide hole are both 2.5 mm.

[0011] Preferably, the length of the thick cylinder is 4 cm.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] The utility model has a reasonable structure. Under the guidance of multiple peripheral guide holes, it can effectively solve the fixation failure caused by blindness and randomness of needle positioning, saving consumables. The introduction of peripheral guide holes with different spacings reflects a highly integrated design concept, avoiding the confusion caused by too many operating table positioners, and helping arthroscopic surgery to develop in the direction of precision and personalization. The guide can directly use the arthroscopic surgical approach without adding additional trauma, simplifying the surgical method, greatly shortening the operation time, effectively reducing the operator's learning curve, and significantly solving existing problems in clinical practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the Nautilus-type orthopedic guide of the utility model.

[0015] Figure 2 It is a cross-sectional schematic diagram of the Nautilus-type orthopedic guide of the utility model.

[0016] Figure 3 This is a real-object photo of the Nautilus-type orthopedic guide of the utility model.

[0017] Figure 4 The utility model is a schematic diagram of the nautilus-type orthopedic guide used for suturing a meniscus posterior root injury.

[0018] In the figure: 11-thick cylinder 11; 12-central K-wire guide hole 12; 13-peripheral K-wire guide hole 13; 21-knee joint (transverse position); 22-meniscus body; 23-meniscus root injury; 24-Nautilus orthopedic guide; 25-positioning guide pin; 26-arthroscopic camera; 27 arthroscopic lens. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below through specific embodiments and drawings.

[0020] In one embodiment of the utility model, a nautilus-type orthopedic guide is provided. Figure 1 As shown, it includes a thick cylinder 11 and a channel passing through the thick cylinder. A central Kirschner wire guide hole 12 is provided in the center of the thick cylinder. Eight peripheral Kirschner wire guide holes 13 with the same diameter are arranged around the central Kirschner wire guide hole. Among the eight peripheral Kirschner wire guide holes, the angle between the center of two adjacent peripheral Kirschner wire guide holes and the center of the central Kirschner wire guide hole is 45°. The distance from the center of the peripheral Kirschner wire guide hole to the center of the central Kirschner wire guide hole varies. The nearest peripheral Kirschner wire guide hole is 3.5mm away from the central Kirschner wire guide hole, and then increases by 0.5mm until the distance from the farthest peripheral Kirschner wire guide hole to the central Kirschner wire guide hole is 7mm. The diameter of the cross section of the guide is 20mm, the diameter of the central Kirschner wire guide hole and the peripheral Kirschner wire guide hole are both 2.5mm, and the length of the guide is 4cm.

[0021] In the orthopedic guide of the utility model, the arrangement of the guide holes of the Kirschner wire is extremely similar to the shell of the nautilus (a kind of marine snail creature), so the orthopedic guide is called a nautilus-type orthopedic guide to vividly describe the hole distribution characteristics of the orthopedic guide.

[0022] The arthroscopically assisted screw-type orthopedic guide of the utility model can be used for suturing the meniscus posterior root injury by bone tunnel technique. The bone tunnel technique is one of the methods for suturing in the whole joint. In 2006, Raustol first used this method to suturing the medial meniscus posterior root injury, and later it was used exclusively for the lateral meniscus posterior root injury, radial tear of the meniscus body, and tear of the meniscus popliteal tendon area. The method of using the arthroscopically assisted screw-type orthopedic guide of the utility model in the suturing process in this example is: conventionally establish a knee arthroscopic surgical approach, scrape the cartilage at the stop point after confirming the injury under arthroscopy, and use the screw-type orthopedic guide of the utility model to drill a channel at the meniscus root bone bridge under arthroscopic monitoring in the auxiliary approach (a single bone tunnel or a double bone tunnel method can be adopted according to the condition), and the peripheral Kirschner wire guide hole of the guide is used for precise positioning during the operation. After the bone tunnel is drilled, the meniscus root is sutured by a round needle mattress method, and the suture is fixed to the anteromedial bone bridge of the tibial plateau. Intraoperative positioning is an essential part of meniscus suturing. The utility model introduces peripheral guide holes with different intervals, which can make the surgical purpose clear and shorten the operation time. Figure 4The figure is a schematic diagram of the nautilus-type orthopedic guide of the utility model used for suturing the posterior root injury of the meniscus. The figure shows a transverse knee joint 21, a meniscus body 22 and a meniscus root injury 23. A positioning guide pin 25 is installed on the nautilus-type orthopedic guide 24 of the utility model. Under the monitoring of the camera 26 and the lens 27 of the arthroscope, the nautilus-type orthopedic guide 24 is used for positioning to achieve the suturing of the posterior root injury of the meniscus.

[0023] The utility model device is mainly used for precise positioning and fixation in auxiliary arthroscopic surgery. Arthroscopic treatment of meniscus injury, anterior cruciate ligament injury, syndesmotic ligament injury, etc. often requires positioning to accurately insert implants (or internal fixators). By using the guide of the utility model, the original surgical incision can be used during the operation to assist in precise arthroscopic positioning. Under the guidance of multiple peripheral guide holes, it can effectively solve the fixation failure caused by blindness and randomness of needle positioning. The introduction of peripheral guide holes with different spacings reflects a highly integrated design concept, avoids the confusion caused by too many operating table positioners, helps arthroscopic surgery develop in the direction of precision and personalization, greatly shortens the operation time, effectively reduces the operator's learning curve, and significantly solves existing problems in clinical practice. It is an auxiliary arthroscopic positioning and fixation device with broad application prospects.

[0024] The specific embodiments of the utility model disclosed above are intended to help understand the content of the utility model and implement it accordingly. Those skilled in the art can understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the utility model. The utility model should not be limited to the contents disclosed in the embodiments of this specification, and the scope of protection of the utility model shall be based on the scope defined in the claims.

Claims

1. A Nautilus-type orthopedic guide, characterized in that: It comprises a thick cylinder, the center of which is provided with a through central Kirschner wire guide hole, and a plurality of peripheral Kirschner wire guide holes with the same diameter are arranged around the central Kirschner wire guide hole, the angle between the center of two adjacent peripheral Kirschner wire guide holes and the line connecting the center of the central Kirschner wire guide hole is 45°, and the distances from the centers of the plurality of peripheral Kirschner wire guide holes to the center of the central Kirschner wire guide hole increase successively.

2. The Nautilus orthopedic guide according to claim 1, characterized in that: The number of the peripheral Kirschner wire guide holes is 8.

3. The Nautilus orthopedic guide according to claim 1, characterized in that: The distances from the centers of the multiple peripheral Kirschner wire guide holes to the center of the central Kirschner wire guide hole increase sequentially, including: the nearest peripheral Kirschner wire guide hole is 3.5 mm away from the central Kirschner wire guide hole, and then increases by 0.5 mm until the farthest peripheral Kirschner wire guide hole is 7 mm away from the central Kirschner wire guide hole.

4. The Nautilus orthopedic guide according to claim 1, characterized in that: The diameter of the cross section of the rough cylinder is 20 mm.

5. The Nautilus orthopedic guide according to claim 1, characterized in that: The diameters of the central Kirschner wire guide hole and the peripheral Kirschner wire guide hole are both 2.5 mm.

6. The Nautilus orthopedic guide according to claim 1, characterized in that: The length of the thick cylinder is 4 cm.

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