Helmet Fixing And Structure Design Reserch Of Digital Display For The Sengstaken-Blakemore Tube

Background and Study Aims:Hepatic cirrhosis is a kind of common disease and it can appear a variety of complications.The most common,also the most dangerous complication of the hepatic cirrhosis is the esophageal and gastric varice,which can lead to uncontrolled hemorrhagic shock,high mortality and the situation is very urgent.In 1950,the sengstaken-blakemore tube was created by Sengstaken and Blakemore,which mainly uses balloon,s physical oppression role on esophageal and gastric varice directly.It has been more than 60 years up to now.Following the development of endoscopic variceal sclerotherapy,interventional operation,surgical operation as the like,thus the patients who are bearing massive hemorrhage leading by esophageal and gastric varice will have a reduced mortality.The Sengstaken-blakemore tube is the preferred emergency and effective rescue measures,especially in the acute stage of esophageal and gastric varices hemorrhage caused by cirrhotic portal hypertension.For the patients who are bearing massive hemorrhage and unable to maintain blood volume effectively,Sengstaken-blakemore tube,s effect is remarkable.It can create opportunities for further endoscopic treatment orsurgery.It has simple structures,convenient to use and the hemostatic effect is exact,thus it is widely used in clinical treatment.It is fixed by suspension method,blocked nose and tape.The disadvantages are tension and pressure,s numbers are unable to real-time monitored.In the process of using,patients are very uncomfortable and painful.At the same time,it has many unsafe factors.The inherent drawbacks are obvious to all.Based on this,this paper presents a new design method for Sengstaken-blakemore tube.By using tension sensor,pressure sensor to Sengstaken-blakemore tube,it realizes the digital display of the tension and pressure.It adopts the helmet fixing,avoids the negative impact of suspension method,blocked nose and reduces patients,pain in the process of treatment.Helmet fixing and digital display of the sengstakenblakemore tube uses manual inflatable balloon and can switch to different inflatable balloon,conveniently and quickly.It changes the tradition that Sengstaken-blakemore tube depends on the syringe and hemostatic forceps for esophageal balloon and gastric balloon.Methods:1.Aiming at the deficiencies and weaknesses of the traditional Sengstaken-blakemore tube,s fixing method and structure design,we research and develop the pressure sensor,tension sensor,the channel selection switches,manual inflatable balloon,helmet etc,thus we completed the Helmet Fixing and Digital Display for the Sengstaken-Blakemore tube,s prototype production.All of these we cooperate with college of mechanical science and engineering of Jilin university.2.We test the instrumen's pressure sensor and tension sensor,s working state by abserving screen whether is light,whether they are in working conditions in 48 hours,the channel selection switch and the Inflatable balloon whether is matched,whether tension adjusting device is in condition.(1)The instrument is connected well according to the connection steps,we observe the instrument,s screens that the pressure sensor and the tension sensor corresponding can or not be light.(2)Similarly,the instrument is connected well according to the connection steps,we observe the pressure sensor and the tension sensor,s display screen whether is in working condition or not respectively at 0 h,6h,12 h,18 h,24 h,30 h and 36 h,42 h,48 h.(3)We turn the channel selection switch to gastric balloon pathway and then pump using manual Inflatable balloon for the balloon.At the same time,we observe and record whether the pressure sensor,s display screen is in working condition and which balloon is inflatable.Similarly,we turn the channel selection switch to esophageal balloon pathway and then pump for the balloon.At the same time,we observe and record whether the pressure sensor,s display screen is in working condition and which balloon is inflatable.(4)Pulling tension adjustment and applying different pulling force,we observe whether the tension sensor is variational.After it is locked,whether the number that we wanted is constant.Rusults1.Based on the traditional Sengstaken-Blakemore tube,we innovate and design the Helmet Fixing.Between the ear plate and the helmet,the ear plate and the box body,they are adjustive,which are convenient to doctors and patients.2.The tension sensor and the pressure sensor are both in working condition when they are under the condition of electricity,even within 48 hours continuously.3.If we choose the channel selection switch to gastric balloon pathway,the rusult is only the gastric balloon is inflatable.In the same way,If we choose the channel selection switch to esophageal balloon pathway,only the esophageal balloon is inflatable samely.Two cases,tension sensor are both in working conditions.4.Pulling tension adjustment device and applying different force,the tension sensor,s number will change with it.Conlutions1.It uses hemiting fixing and avoiding the bad influences that suspension type and the nose fixed can bring to the patients.It can relieve the pain in the process of treatment and it is convenient to use.2.Helmet Fixing and Digital Display for the Sengstaken-Blakemore tube can monitor the tension and the pressure.From perspective of the time,it can meet the needs of clinical treatment.3.The channel selection switch can pump for the balloon respectively and it is convenient and quick.4.Pulling tension adjustment device,we can set the tension value.