1. Precautions in use The hard tube endoscope is not damaged during the operation. Although it will touch and bump with human tissues such as muscles, mucous membranes, bones, etc., these bumps are slight and will not cause peeks. The mirror is damaged because it is only for observation, not the point of force of other instruments. However, when using other instruments, especially for clamps and scissors with large bite force, please note that the front end of the lens tube should not protrude into the occlusal area of the instrument to avoid accidental injury to the lens tube. When using such instruments, sometimes the doctor stretches the speculum very close to the tissue in order to see the structure of the occlusal area. When the instrument is engaged, the speculum does not return and the speculum is accidentally injured. Such accidents can be avoided by paying attention to the occlusion of the instrument during the operation of the scope.
Some surgical speculums are used in the sheath. When replacing other angle goggles or inserting and removing instruments, attention should be paid to the action being light and the unavailability is too strong. Especially in the process of inserting and pulling the speculum, when the resistance is not pulled, the cause should be carefully searched. If necessary, it should be taken together with the sheath tube. Do not use brute force. When the speculum is combined with laser vaporization, high-frequency electric cutting, microwave and other optoelectronic techniques for surgery, the distance between the front end of the speculum and the treatment point should be noted to ensure that the front end of the speculum is not electrically shocked or cauterized. When using these instruments for the first time, the surgeon should practice repeatedly to grasp the relationship between the object distance and the actual object distance in the speculum image, and confirm the closest distance between the front end of the speculum and the treatment point, so that it can be used freely in actual surgery. A planer has been widely used in the clinical operations of otolaryngology and orthopedics to remove diseased tissue. The cutter head is sharp, the hardness is high, the rotation speed is fast, and the torque is large. If the endoscope is cut, the sight glass will be damaged. In such surgery, pay attention to adjusting the speed of flushing and attracting, and ensure that the speculum image is clear and not obscured by blood stains at any time. The rotating part of the control head is always within the observation range of the speculum. When the operation range is large, it should be stopped first. The cutter head rotates, then moves the sight glass, and then moves the cutter head under the sight glass monitoring, and then starts the planing after reaching the appropriate part. When it is felt that the planer is working abnormally or the illumination is suddenly lowered, it may be damaged and should be replaced in time to avoid further damage. Generally important surgery, there should be a set of spare speculum and key equipment, which can be easily replaced when the problem is found; if the angle is not suitable for use with a speculum or an unsuitable device, it is easy to cause damage to the speculum.
2. How to maintain a rigid endoscope The rigid endoscope should be kept in a special counter and placed in a special box with a soft sponge or polyurethane foam. All speculum and surgical instruments should be placed neatly and tidy. Do not overlap and overlap. After the cover is closed, the internal scope and instruments will not collide with each other during handling. Since the endoscope's lens tube is very thin, it will be bent and deformed due to crushing, bumping, bending, landing, etc., resulting in lens damage or optical axis shift, resulting in unclear or unusable images, so take it out of the box. Or put into the tube endoscope, should be flat with both hands, gently remove or put in, should not lift a section. When the speculum is moved in a rigid container such as a tray, be careful to place it separately from other instruments. Do not over-bounce to avoid collision with the speculum. A desiccant should be provided in the box to keep the box dry.
Ordinary hard tube endoscopes are not resistant to high temperature and high pressure, mainly because the encapsulant will deteriorate and deform at high temperatures, and the speculum will open the water, so it can not be disinfected by high temperature and high pressure methods such as boiling and high pressure steam. Most of the hard endoscope damage is caused by inadvertent maintenance, bumping, landing, etc. There are also problems with the packaging glue, packaging technology, and packaging structure of individual manufacturers, which cause the phenomenon of water injecting and opening of the speculum, which can be repaired. Although the rigid endoscope is a delicate medical device, it is not prone to problems in normal clinical surgery or observation. As long as it is used properly, carefully maintained, and carefully maintained, doctors can use it with confidence, and rigid endoscopes will also maximize their benefits.