Study on development of needle scope system for the arthroscopic sorgery of the temporomandibular joint.

自1974年以来，我们一直在研究临时性关节疾病的应用病理学外科。通过这项研究，我们开发了一个新设计的外科手术系统，这个原型是1.7毫米的外部直径，视野的角度是空气中60度，水中45度。每个外炮组的有效长度为90毫米或50毫米，该设备最重要的实现使其能够在同一个弧形镜中使用两种不同大小的外炮：圆形单光外炮（外部直径2.0毫米）和一个全双光外炮（3.8 x2.0）。使用内部指南针，使用一种内部指南针，可以很容易地替换为一种单一的光线外的炮弹。此设备可能不仅用于诊断病理学，但也用于病理学外科。在具体情况下，它是一个用于外科设备插入的孔，使之能够并行插入的设备。这使得它很容易一直观察到外科设备的先进边缘和操纵，因此可以得到很大的改善。

We have been studying applicational arthroscopic surgery for temporomandibular joint diseases since 1974. And through this study we have develoved a newly designed system of surgical arthroscopy.this prototype has an external diameter of 1.7 mm. The angle of vision is 60゜ in air and 45゜ in water. The effective length with the outer cannula set on is either 90 mm or 50 mm. The most important achievement of this device is that it enables the usage of two types of different-sized outer cannula in the same arthroscope: a round single-lumen outer cannula (external diameter 2.0 mm) and an oval double-lumen outer cannula (3.8x 2.0). The single-lumen outer cannula can easily be replaced with the double-lumen outer cannula by using an internal guiding needle. this device can be used not only for diagnostic arthroscopy but also for arthroscopic surgery.In particular, it has a hole for surgical device insertion which enable parallel insertion of device. This makes it easy to always observe the advancing edge of surgicaldevice and the manipvlation can therefore be greatly improved.