Sasidharan Aashish, David Ann, Gohil Amish, Gupta Ashish Kumar
Department of Plastic and Reconstructive Surgery, Christian Medical College and Hospital, Vellore, Tamil Nadu, India.
Department of Bioengineering, Christian Medical College and Hospital, Vellore, Tamil Nadu, India.
Indian J Plast Surg. 2015 Sep-Dec;48(3):293-6. doi: 10.4103/0970-0358.173128.
Keloids of the ear are common problems. Various treatment modalities are available for the treatment of ear keloids. Surgical excision with intralesional steroid injection along with compression therapy has the least recurrence rate. Various types of devices are available for pressure therapy. Pressure applied by these devices is uncontrolled and is associated with the risk of pressure necrosis. We describe here a simple and easy to use device to measure pressure applied by these clips for better outcome.
To devise a simple method to measure the pressure applied by various pressure clips used in ear keloid pressure therapy.
By using a force sensitive resistor (FSR), the pressure applied gets converted into voltage using electrical wires, resistors, capacitors, converter, amplifier, diode, nine-volt (9V) cadmium battery and the voltage is measured using a multimeter. The measured voltage is then converted into pressure using pressure voltage graph that depicts the actual pressure applied by the pressure clip.
The pressure applied by different clips was variable. The spring clips were adjustable by slight variation in the design whereas the pressure applied by binder clips and magnet discs was not adjustable.
The uncontrolled/suboptimal pressure applied by certain pressure clips can be monitored to provide optimal pressure therapy in ear keloid for better outcome.
耳部瘢痕疙瘩是常见问题。有多种治疗方式可用于耳部瘢痕疙瘩的治疗。手术切除联合病灶内注射类固醇以及压迫疗法的复发率最低。有多种类型的设备可用于压力治疗。这些设备施加的压力不受控制，且存在压力性坏死的风险。我们在此描述一种简单易用的设备，用于测量这些夹子施加的压力，以获得更好的治疗效果。
设计一种简单方法来测量耳部瘢痕疙瘩压力治疗中使用的各种压力夹所施加的压力。
通过使用力敏电阻（FSR），施加的压力利用电线、电阻器、电容器、转换器、放大器、二极管、九伏（9V）镉电池转换为电压，并使用万用表测量电压。然后利用描绘压力夹实际施加压力的压力 - 电压图将测得的电压转换为压力。
不同夹子施加的压力各不相同。弹簧夹可通过设计上的微小变化进行调节，而装订夹和磁碟施加的压力不可调节。
可以监测某些压力夹施加的不受控制/未达最佳的压力，以便在耳部瘢痕疙瘩治疗中提供最佳压力治疗，从而获得更好的治疗效果。
