• 제목/요약/키워드: Infusion tube

검색결과 27건 처리시간 0.029초

이식형 약물 주입 장치용 마이크로 튜브 펌프 (Micro Tube Pump for an Implantable Drug Infusion Device)

  • 백두진;박준우;이덕희;이철한;홍소영;조영호
    • 한국유체기계학회 논문집
    • /
    • 제11권1호
    • /
    • pp.40-45
    • /
    • 2008
  • This paper proposes a tube pump composed of small-sized cams and followers for an implantable intrathecal drug infusion device. Each followers is driven by a cam and liquid is discharged by a sequential reciprocal motion of the followers. The advantage of this structure is that it allows the pump to be clean and valveless. To design a small-sized, low power pump some analysis were performed to determine the design parameters of the cam, follower and the tube. To verify the feasibility of the experiment, a prototype was manufactured and its operating characteristics were investigated. Experimental results were in accordance with the expected results obtained from analysis.

Non-PVC(폴리올레핀) 수액용 튜브 내면에서의 약물흡착 거동 - PVC 및 PU 수액튜브와의 비교 (Drug Adsorption Behavior of Polyolefin Infusion Tube Compared to PVC and PU)

  • 박강훈;박창규;박종;전승호;방사익;김지흥;정동준
    • 폴리머
    • /
    • 제38권3호
    • /
    • pp.333-337
    • /
    • 2014
  • PVC 재질로 만들어진 기존의 수액백과 튜브는 가소제인 DEHP(diethylhexyl phthalate)를 함유하고 있어 정맥 주사 시에 가소제의 용출과 약물 흡착이라는 심각한 취약점을 내재하고 있다. 본 연구에서는 폴리올레핀 재질로 만들어진 non-PVC 수액튜브(가소제 미포함)를 개발하고, 이들 튜브 내면에서의 약물 흡착 거동을 기존의 PVC 및 PU 재질의 수액 튜브와 비교 검토하므로써, 수액 주사 시 약물 흡착으로 인한 약효 감소 효과를 최소화 가능한 방안을 도출하고자 한다. 4가지의 non-PVC 수액튜브는 폴리에틸렌(PE), 폴리프로필렌(PP), syndiotactic 1,2-폴리부타 다이엔(PB)과 스타이렌-에틸렌(SE)의 공중합 탄성체를 사용하여 압출하여 제조하였으며, 이들은 기존의 PVC 수액튜브의 기계적 특성과 동등한 물성을 나타내었다. 아울러 제조된 폴리올레핀 재질의 4가지 수액튜브들은 기존의 PVC 및 PU 재질의 수액튜브 대비 우수한 약물흡착 방지 효과를 나타내었다. 따라서 이들은 약물흡착 방지용 수액튜브뿐 아니라 DEHP의 용출 위험이 배제된 안전한 수액튜브로서 임상 적용 가능할 것이다.

저체온 환자 치료에서 정맥주입 수액의 열손실을 막는 간단한 방법에 관한 고찰 (A Simple and Easy Method to Prevent Intravenous Fluid Heat Loss in Hypothermia)

  • 이선화;최윤희;이동훈
    • Journal of Trauma and Injury
    • /
    • 제26권4호
    • /
    • pp.255-260
    • /
    • 2013
  • Purpose: For the treat hypothermia patients, active warming might be needed. In most emergency departments, IV warm saline infusion is used for treatments. However, during IV warm saline infusion, heat loss from the warm saline may occur and aggravate hypothermia. Thus, in this study, we conducted an experiment on conserving heat loss from warm saline by using a simple method. Methods: Four insulation methods were used for this study. 1) wrapping the set tube for the administration of the IV fluid with a cotton bandage, 2) wrapping the set tube for the administration of the IV fluid with a cotton bandage with aluminum foil, 3) wrapping the warm saline bag and tube with a cotton bandage, and 4) wrapping the warm saline bag and tube with a cotton bandage with aluminum foil. Intravenous fluid was preheated to a temperature between $38-40^{\circ}C$. The temperatures of the saline bag temperature and the distal end of the IV administration set were measured every ten minutes for an hour. The infusion rate was 1000 cc/hr, and to obtain an accurate infusion rate, we used an infusion pump. Results: The mean initial temperature of the saline bag was $39.11^{\circ}C$. An hour later, the fluid temperature at the distal end of the fluid temperature ranged from $39.11^{\circ}C$ to $34.3^{\circ}C$. Without any insulation, the initial temperature of the pre-heated warm saline, $39^{\circ}$ had decreased to $34.8^{\circ}C$ after having been run through the 170-cm-long IV administration tube, and after 1-hour, the temperature was $29.63^{\circ}C$. As we expected, heat loss was prevented most by wrapping both the saline bag and the IV administration set with a cotton bandage and aluminum foil. Conclusion: Wrapping both the saline bag and the IV administration set with a cotton bandage and aluminum foil can prevent heat loss during IV infusion in Emergency departments.

능동형 근육펌프 구조의 수액 주입 펌프 개발에 관한 연구 (A Study on the Development of a Infusion Pump based on an Active Muscle Pump)

  • 이정환;이상엽;이정은;안인석
    • 한국산업융합학회 논문집
    • /
    • 제25권3호
    • /
    • pp.443-449
    • /
    • 2022
  • In this study, in order to improve the disadvantages of the environmental error of the infusion set that performs infusion therapy in the existing clinical practice and to maximize the user's convenience by miniaturizing the existing infusion pump system, the structure of the muscle pump of the human vein was imitated. As a double check valve method, a method for preventing the backflow of fluid and discharging a constant fluid in one direction by external pressure was proposed. The proposed bio-mimic muscle pump uses a check valve that controls the flow of fluid in one direction and a silicone tube with elasticity, and a chamber is constructed. A peristaltic pump for applying intermittent pressure to the tube chamber was constructed using a multi-cam structure roller. In order to verify the performance of the proposed pump, optimization was performed while changing the number of multi-cam rollers and adjusting the speed of the roller driving motor, and the reproducibility of the instantaneous discharge amount and the continuous discharge amount of the pump was compared and tested. The performance of the muscle pump proposed in this study was verified through experiments that it can inject up to 1L of fluid within 12 hours, and that it is possible to inject the fluid with an accuracy of ±0.1ml. Real-time monitoring of the fluid injection volume through the bio-mimic muscle pump proposed in this study not only increases the convenience of the administrator, but also provides a precise fluid administration environment to more patients at a low cost, and additionally applies bubble detection and occlusion detection technology If so, it is believed that a safer medical environment can be provided to patients.

광센서 점적계를 이용한 정맥내 주입률 조절기의 개발 (Development of an IV Infusion Rate Regulator Using Optical Drip Rate Meter)

  • 양윤석;김희찬
    • 대한의용생체공학회:학술대회논문집
    • /
    • 대한의용생체공학회 1998년도 추계학술대회
    • /
    • pp.127-128
    • /
    • 1998
  • It is necessary to maintain constant intravenous (IV) infusion rate. While infusion pump is able to control infusion rate with great accuracy, its rather large size and weight make it difficult for patients to move around. The most commonly used infusion device is gravity IV infusion set with its administration chamber being clamped according to the observed drip rate. In this case it may be easier and more accurate to maintain IV rate to given value if we automate the drip-counting process and tube-clamping work by electronic devices. We calculated volume infusion rate of specific fluid using optical drip rate meter which we had developed. To regulate fluid flow rate, we equipped the rate meter which we had developed with a miniaturized clamping apparatus using DC motor. Also, we Implemented drip detection and clamp control algorithm with PIC16C73 $\mu$-controller (Microchip). This system provides user interface through LCD display and key buttons.

  • PDF

개에서 Propofol 점적투여율 변화가 심혈관계에 미치는 영향 (Cardiovascular Effects of Propofol Infused for Maintenance of Anesthesia in Dogs)

  • 권영삼;장광호;장환수;박현정;임재현;오태호;엄기동;장인호
    • 한국임상수의학회지
    • /
    • 제19권2호
    • /
    • pp.199-203
    • /
    • 2002
  • Cardiovascular effects of propofol, were assessed after premedication with xylazine(1.0 mUkg, IM) under oxygen supply(200 ml/kg/min) via a endotracheal tube. Twelve adult mixed-breed dogs were divided into four groups; 0.2(Group 1), 0.4(Group 2), 0.6(Group 3) and 0.8 mg/kg/min(Group 4) of propofol respectively. Arterial blood pressure and electrocardiogram were monitored with a physiograph after an arterial catheter was inserted into the femoral artery. pH, arterial carbon dioxide tension($PaCO_2$and arterial oxygen tension($PaO_2$) were evaluated with arterial blood collected through the inserted catheter. Diastolic arterial pressure, systolic arterial pressure and mean arterial pressure were decreased slightly in Group I IIand III, but decreased significantly in Group IV. They were increased rapidly after stopping propofol infusion in Group IV pH was maintained in normal range in Group I, II and m, but was decreased in proportion to time passing in Group IV. $PaCO_2$ was increased significantly only in Group IV but $PaO_2$ was maintained in normal range in all groups Although heart rate was recorded in normal range for 90 minutes, arythmia was noted after stopping propofol infusion in all groups. It was concluded that propofol depressed the cardiovascular system in proportion to infusion dosage, and 0.8 mg/kg/min of propofol infusion rate was not appropriated in canine anesthesia with xylazine premedication.

Study on bubble detection sensor for safe sap and blood injection

  • Yun, Young Gi;Lee, Hoo Young;Park, Koo Rack
    • 한국컴퓨터정보학회논문지
    • /
    • 제22권9호
    • /
    • pp.149-154
    • /
    • 2017
  • The infusion of fluid and blood is necessary in the ward, operating room, recovery room, neonatal room, etc. for nutrition and blood supply to the patient, but air bubbles generated during infusion of fluid and blood circulate along the artery or vein. Serious illnesses occur and there is also a risk of death. In this paper, we propose a medical bubble detection system, a bubble detection system, a bubble detection alarm system, and a communication method in order to develop a safer fluid and blood injection system in the existing system, which is detected by a medical staff monitoring system or an ultrasonic bubble detection sensor In this study, infrared rays are transmitted to a tube through a tube for injecting fluid or blood into a patient, infrared rays transmitted by an infrared ray emitting section are received, and the amount of light is measured in real time. Based on the data, we study how to detect and analyze the presence of bubbles in fluid and blood.

병원 성인 환자의 경관급식에 관한 연구 (A Study on Tube Feeding Practices of Adult In-patients)

  • 한경희
    • Journal of Nutrition and Health
    • /
    • 제25권7호
    • /
    • pp.668-683
    • /
    • 1992
  • To evaluate the current practices of the tube feeding and the status of tube feeding patient 76 adult in-patients at 6 hospitals located in Seoul and Chung-buk province were examined through reviewing patient charts observing patients and interviewing patients nurses dietitians patients' family or care-givers. The results were as follows : 1) An average age of the patients was 54.5 years with 41% over 60 years old. Patients with decreased mental status dysphagia esophageal obstruction and respiratory problem were fed by tubes. 2) The range of duration of tube feeding is between 4 days and 6 years. Most patients were received formula through nasogastric tube(89.5%) while 7.9% of gastrostomy and 2.6% of jejunostomy. Administration method for formula were bolus feeding regardless of the route of formula delivery. 3) Mean total calories received for men were 1590 kcal and 1450 kcal for female. Mean volume per meal was 282m, l and mean frequency of feeding was 5.68 while mean feeding interval 3$\frac{1}{4}$ hours and mean rate of infusion 68.4ml/min. All patients received hospital-blenderi-zed formula as the major source of nutrition. Home-blenderized formula and commercial formula as a supplement were used 35%, 13.2% respectively. 4) Thirty-eight percent of patients was hypoalbuminemia and 61% was at the moderate level of deficiency in hemoglobin. 5) Complications associated with tube feeding were diarrhea (22.4%) constipation(21.1%) vomiting(11.8%) and so on. 6) Serum albumin levels of patients who have complications associated with tube feeding were significantly lower than those of patients without complications In planning a tube feeding regimen the type of a formula must be integrated with both a delivery system and a protocol for administering the tube feeding. the multidisciplinary effort required to deliver enteral therapy is essential to improve current practices used at hospitals.

  • PDF

병원가정간호사업 운영 현황 및 서비스 만족도에 관한 연구 (A Study for the Present Conditions and the Service Satisfaction with Hospital Home Care Service)

  • 홍춘실;오경옥;박미영;심희숙;차영남
    • 가정∙방문간호학회지
    • /
    • 제8권2호
    • /
    • pp.121-134
    • /
    • 2001
  • The purpose of this study were to analyze the home care services and to evaluate the client's satisfaction with the home care services provided by home care service center in the C hospital. The data were collected by reviewing charts of 128 home care clients who were receiving home care services at C hospital from October 1997 to September 2000. The subjects for satisfaction of home care service were 20 clients from July 10 to September 30, 2000. The tool for measurement of present condition of home care service was developed by the researchers. The satisfactions of the home care services were measured by using the instrument developed by Im(997). The data were analyzed by using the SPSS/PC+. The results of this study were as followings : 1. Majority of the subjects was female(61.7%). The average of age was 63.5 years. The service has been used mostly by the elderly 60 years of age or older(71.1%). The economic level of most of subjects was in middle class(94.5%). 2. Majority of the subject had a cancer(55.4%), following stroke(25.0%). The average duration of disease for the subjects was 31 months. The average time of hospitalization for the subjects was 3.3 times. The duration of hospitalization was 10$\sim$30 days(26.6%), 30$\sim$60 days(23.4%) and above of the 210 days(9.4%). 3. Most of the subjects used his/her doctor (47.7%), as a consultant, following his/her nurse (28.1%), other patients or their family (21.9%). Most of reasons for a consultation were supportive management(Infusion or medication, 60.94%), following tube management(L-tube or T-tube, 25%), Foley catheter management (15.63%) etc. 4. 28 types of nursing diagnoses were used by the home care service. The nursing diagnosis altered nutrition: less than body requirement were used mostly by the home care service, following risk for infection, impaired skin integrity, impaired swallowing, ineffective airway clearance altered comfort: pain, impaired physical mobility. By the human-response pattern, exchanging(63.2%), moving(7.5%), feeling(10.4%), knowing(5.2%), communicating (2.6%), relating(0.5%) perceiving(0.4%) and choosing(0.3%). There were 42 nursing intervention types were performed by the home care service. By the NIC(nursing intervention classification. McCloskey. Bulech. 1996). physiologic: complex (30.3%) was the most, safety(28.3%), behavioral(20.0%), physiologic: basic(10.8%) and health system(1.7%). Observation or assessment was the most nursing intervention performed by the home care service. following IV infusion. vital sign observation. infusion management and fluid-electrolyte balance management. 5. The level of client's satisfaction with provided home care services showed considerably high(2.67/ 3).

  • PDF

Extensive Tension Pneumocephalus Caused by Spinal Tapping in a Patient with Basal Skull Fracture and Pneumothorax

  • Lee, Seung-Hwan;Koh, Jun-Seok;Bang, Jae-Seung;Kim, Myung-Chun
    • Journal of Korean Neurosurgical Society
    • /
    • 제45권5호
    • /
    • pp.318-321
    • /
    • 2009
  • Tension pneumocephalus may follow a cerebrospinal fluid(CSF) leak communicating with extensive extradural air. However, it rarely occurs after diagnostic lumbar puncture, and its treatment and pathophysiology are uncertain. Tension pneumocephalus can develop even after diagnostic lumbar puncture in a special condition. This extremely rare condition and underlying pathophysiology will be presented and discussed. The authors report the case of a 44-year-old man with a basal skull fracture accompanied by pneumothorax necessitating chest tube suction drainage, who underwent an uneventful lumbar tapping that was complicated by postprocedural tension pneumocephalus resulting in an altered mental status. The patient was managed by burr hole trephination and saline infusion following chest tube disengagement. He recovered well with no neurologic deficits after the operation, and a follow-up computed tomography (CT) scan demonstrated that the pneumocephalus had completely resolved. Tension pneumocephalus is a rare but serious complication of lumbar puncture in patients with basal skull fractures accompanied by pneumothorax, which requires continuous chest tube drainage. Thus, when there is a need for lumbar tapping in these patients, it should be performed after the negative pressure is disengaged.