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Fascia cutting knife for round window excitation type artificial middle ear implantation operation

A cutting knife and ear implantation technology, applied in ear treatment and other directions, can solve the problems of insecurity, damage to the round window membrane 202, poor support of the actuator 110, etc., and achieve accurate fascia thickness, accurate control, and accurate cutting The effect of fascia

Active Publication Date: 2022-06-07
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the implantation process, the thickness of the fascia 201 is controlled by the doctor based on subjective feeling, and the thickness of the fascia 201 is very important in the implantation process of the actuator 110. If the thickness of the fascia 201 is too thin, it will cause the actuator 110 to support The degree is poor and cannot provide stable support for the patient. If the thickness of the fascia 201 is too thick, there will be a risk of damaging the round window membrane 202
In addition, during the implantation process, the thickness of the fascia 201 that needs to be cut is at the mm level, and it is difficult and unsafe to control only by the doctor's subjective feeling
[0008] Second, during the implantation process of the actuator 110, the initial pressure of the actuator 110 acting on the round window membrane 202 cannot be controlled
However, at present, during the clinical implantation of the actuator 110, it is impossible to evaluate the initial pressure of the actuator 110 on the round window membrane 202

Method used

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  • Fascia cutting knife for round window excitation type artificial middle ear implantation operation
  • Fascia cutting knife for round window excitation type artificial middle ear implantation operation
  • Fascia cutting knife for round window excitation type artificial middle ear implantation operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see image 3 , a fascia cutting knife for round window excitation type artificial middle ear implantation operation, including cutting knife 304 , adjusting device 303 , locking device 301 and housing 302 . see Figure 4 , the cutting knife 304 includes the main cutting knife 402 and the auxiliary cutting knife 403; the gap between the main cutting knife 402 and the auxiliary cutting knife 403 at the cutting end 401 is equal to the sum of the gap of the measuring end 405 and the thickness of the tail of the measuring end 405; the cutting knife 304 is provided with The measuring end 405 and the cutting end 401; the main cutting knife 402 is in the shape of a hat as a whole, one end is the measuring end 405, its tail is shrunk into a thin cuboid, the other end is the cutting end 401, and one side is provided with a blade; the main cutting knife 402 An adjusting hole 404 is opened in the middle to facilitate the passage of the adjusting device 303;

[0043] see Figure ...

Embodiment 2

[0050] see Figure 9 , Figure 10 and Figure 11 , Replace the adjusting block I501, adjusting bolt 504, upper casing I701 and lower casing I702 in the first embodiment with adjusting shaft 1001, adjusting cap 1002, adjusting gear shaft 1003, adjusting block II1004, and upper casing II1101 and lower case II1102.

[0051] see Figure 10 , the adjustment device 303 includes an adjustment shaft 1001 , a left spring 502 , a right spring 503 , an adjustment cap 1002 , an adjustment gear shaft 1003 and an adjustment block II 1004 . The adjusting cap 1002 is a cylinder with a rough cylindrical surface, which is convenient for clinicians to rotate, and one side is provided with a cylindrical hole and a key-like structure; one side of the adjusting gear shaft 1003 is provided with a key groove 1005 to cooperate with the adjusting cap 1002, and the other side is provided with a gear 1006 and an adjusting block The upper rack groove 1007 of II is matched; the adjusting block II 1004 ...

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Abstract

The invention relates to a fascia cutting knife for a round window excitation type artificial middle ear implantation operation. The fascia cutting knife comprises a cutting knife body, an adjusting device, a locking device and a shell. The cutting knife is provided with a measuring end and a cutting end, the measuring end is arranged between the actuator and the bone wall of the round window niche to measure the distance between the actuator and the bone wall of the round window niche, and the cutting end cuts fascia with the corresponding thickness based on the distance measured by the measuring end; the adjusting device and the cutting knives are assembled and arranged in the shell, and the adjusting device is used for accurately controlling the distance between the cutting knives. The locking device is connected with the shell and is arranged between the shell and the cutting knife to lock the position of the cutting knife so as to ensure that the cutting knife accurately cuts fascia; the shell provides supporting and protecting effects for other parts. In addition, the shell is transparent, and scales are marked on the surface of the shell to monitor the position of the auxiliary cutting knife so as to monitor the initial pressure. According to the fascia cutting knife, the function of monitoring the initial pressure of the actuator acting on the round window membrane is achieved, and in addition, the fascia needed for supporting the actuator can be accurately cut.

Description

technical field [0001] The invention relates to a medical instrument device for ear surgery, in particular to a fascia cutter used for a round window excitation type artificial middle ear implantation operation. Background technique [0002] As a common disease, hearing loss brings great inconvenience to human's daily life. Hearing impairment can be divided into conductive hearing impairment, sensorineural hearing impairment and mixed hearing impairment according to the different mechanisms of damage. For conductive hearing loss, most patients can have surgery to improve their hearing. For sensorineural hearing loss, there is still a lack of targeted treatment options, and traditional hearing aids are generally used to improve hearing. However, traditional hearing aids have problems such as small output gain (which cannot compensate for high-level hearing damage), clogging of the ear canal, and troublesome daily maintenance of the device. These problems cause many patients...

Claims

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Application Information

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IPC IPC(8): A61F11/20
Inventor 张瑞宁刘后广郝敬宾杨建华刘送永寇寅欣刘兆海刘耀松贺志恒赵航宇
Owner CHINA UNIV OF MINING & TECH