Various shapes are used for endoscope insertion tubes. These can be circular, noncircular, bent, or working channel. Learn what each shape is used for and how it functions. You can also get an idea of what type of insertion tube is best for your specific body region. The next article will discuss the differences among these types of insertion tubes. We’ll also discuss the differences between circular and noncircular cross-sections.
Variations in https://www.smarttechmed.com/product-category/endoscope-accessories/insertion-tube/ shape
The insertion tube can be of different shapes. Its major axis can be circular or noncircular. The outer perimeter may be circular or noncircular. The bending portion of the tube may be curved or elongated. The insertion tube’s shape is a key element for successful insertion. Some of the shapes of endoscope insertion tubes are described in the following paragraphs.
Non-circular cross-section
The non-circular cross-section of an https://www.smarttechmed.com/product-category/endoscope-replacement-parts/video-heads-buttons/ allows the physician to see a different part of the body with greater precision. This shape is derived from the shape of the body region it is used to view. There are four major non-circular cross-sections of the endoscope insertion tube. Each of these shapes reflects the anatomy and function of the affected body part.
Bending section
The bending portion of the endoscope insertion tube is made of either an elongated or noncircular material. The elongate portion may be made of a single vertebra or may be made of multiple vertebrae that are bent at 90 degrees. The noncircular section of the insertion tube is also called the bending tip. In addition, the bending tip is often made of a different material than the elongated section.
Working channel
A common endoscope insertion tube includes a bending section. It is capable of curling in any direction and is controlled by four angulation wires located along the insertion tube’s length. They are attached to the tip at four different positions. When pulled at the 12 o’clock position, the bending section will curl up. Pulling at the three o’clock position will deflect the tip to the right, while the other wires will bend the tip to the left and the right.
Sheath
Sheaths for endoscope insertion tubes are designed to isolate the flexible inserted tube from the external environment and give it semi-rigid bending characteristics. Endoscopic sheaths are generally composed of a body 36, shape-retaining member 38, and compliant tube 40. The body and shape-retaining member are connected to openings in the distal end of the sheath.
