• 대한의용생체공학회:의공학회지
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• 제17권4호
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• pp.491-498
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• 1996

The development of a compact two-wavelength Nd:YAG laser for dental and ENT applications is presented. The Nd:YAG resonator generates either 1.06$\mu$m or 1.32$\mu$m. The wavelength selection is made at the control panel. The Nd:YAG laser parameters at 1.06$\mu$m are ; the maximum pulse duration of 150$\mu$s, repetition rates of I-100Hz, and the maximum average power of 25W. At 1.32$\mu$m, the pulse duration is the same where the repetition rates and the maximum average power are I-30Hz and lOW respectively. High voltage power supply consists of a simmer module and two identical high voltage DC converters. In order to make a complete medical laser system, an optical fiber delivery unit, foot pedal and water spray handpiece are also developed. The wavelength selection is reliable since no movement of optical or mechanical components is required. The high voltage power supply is compact, easy to be maintained and applicable for other laser systems due to its modular design.

• Journal of Preventive Medicine and Public Health
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• 제54권1호
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• pp.81-84
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• 2021

The delivery of high-quality antenatal care is a perennial global concern for improving maternal and neonatal outcomes. Antenatal care is currently provided mainly on a one-to-one basis, but growing evidence has emerged to support the effectiveness of group antenatal care. Providing care in a small group gives expectant mothers the opportunity to have discussions with their peers about certain issues and concerns that are unique to them and to form a support system that will improve the quality and utilization of antenatal care services. The aim of this article is to promote group antenatal care as a means to increase utilization of healthcare.

• The Korean Journal of Pain
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• 제12권1호
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• pp.101-107
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• 1999

Background : In order to improve the quality of life of dying patients, they need to receive not only the physical, psychological, social, and spiritual care, but also systematic and continuous care to die with dignity. However, no adequate medical services are available for these terminal cancer patients. We studied their behavior patterns of health care utilization to understand more of their medical and social needs. Methods : We investigated 108 bereaved families through the telephone interview with structured questionnaires. They were randomly selected through the retrospective chart review of the terminal patients who passed away due to cancer. Results : Most of the terminal cancer patients received their care from proper medical services including admission to hospital (45.4%), outpatient clinic (22.2%), emergency room (16.7%), and oriental medicine (12.0%). But during the terminal phase of their illness, 32.4% of patients never received medical care including oriental medicine, and 28.7% received alterative natural care. 26 bereaved families (24.1%) pointed out the indifference of medical staff as a problem receiving proper hospital care, and 22 (20.4%) emphasized emotional strain of their helplessness with the patients' suffering as a problem of caring at home. Over 90% suggested availability of continuous care, hospice care, home care, and 24 hour telephone service to be improved. Conclusions : Due to various reasons, adequate medical care is not delivered to the terminal cancer patients in our present medical system. These problems can be approached with the establishment of proper education and medical delivery system. The role of comprehensive medical specialty cannot be overly emphasized to accomplish this most effectively.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1992년도 추계학술대회
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• pp.157-160
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• 1992

표면에 여러 가지 기능성기를 가지는 microspheres는 immunoassay, drug delivery system, cell separation등 의용공학분야에 응용이 기대되고 있다. 이들 분야의 응용을 위하여 유화제를 사용하지 않으면서, 기존의 회분식, 반회분식, seed 중합법등의 문제점을 극복한 two stage shot growth technique올 개발하여 여러 가지 기능성기가 표면에 도입된 microspheres를 제조하였으며, 응용의 전단계로서 이들 microspheres에 대한 모델 단백질(BSA)의 흡착실험을 pH, 기능 성기의 종류와 양, BSA농도를 변수로 행하여 최대 흡착량을 보이는 조건을 결정하였다.

• 한국임상약학회지
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• 제13권2호
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• pp.82-90
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• 2003

Dopamine is an effective pressor for the treatment of shock and hypotension when patients do not respond to plasma volume expansion. Two dopamine intravenous delivery systems are currently available in Korea. The objective of this study was to compare dopamine premixed with prefilled system in terms of supply costs (preparation costs + personnel time), contamination rates and convenience. Time-and-motion studies were conducted to determine the time and costs associated with preparation and administration of the two systems. They were analyzed and compared by Mann-Whitney test. To evaluate the contaminaton rates of the two systems, both systems were prepared in an open environment similar to that of practical situations. Premixed and compounded solutions were then filtered by $0.22{\mu}m$ membrane filters, which were cultured at $37^{\circ}C$ for 10 days and their contents were visually checked for bacterial contamination. The convenience of the two systems was compared by itemized user assessments on preparation, dose calculation, admixture, administration and disposal of waste matters. They were analyzed by Wilcoxon's signed rank test and 100 part percentage. It was found that the preparation costs $(mean{\pm}SD)$ for premixed and prefilled systems were $271.70\pm293.55\;Won$ (Korean currency) and $1521.04\pm510.63\;Won$, respectively. The preparation time $(mean{\pm}SD)$ for premixed system was $68.10\pm35.69\;sec.$ while at for prefilled system was $154.03\pm50.06\;sec.$ (n=59 each, p<0.001). No bacterium was observed in the samples of both systems (n=20, each). User assessments indicated that the premixed system was more convenient than the prefilled system except for the item of dose calculation (n=24, p<0.001). Subjective evaluations have proven that the use of the dopamine premixed system resulted in increased efficiency of intravenous preparation by allowing personnel to devote more time to other labor-intensive duties and lower total medical costs.

• 한국의학물리학회지:의학물리
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• 제23권2호
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• pp.123-126
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• 2012

혈액조사기의 정기적 정도관리를 위하여 일일, 월간 및 년간점검 항목을 개발하였다. 일일점검은 육안으로 기본적 작동을 점검하고, 월간과 년간점검은 자체 제작한 기구(유리선량계 지그)를 사용하여 조사 콘테이너에 대한 선량평가를 수행하도록 하였다. 본 연구에서 도출한 항목들은 임상적 차원에서 실용적이라고 평가한다.

• Journal of Pharmaceutical Investigation
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• 제39권2호
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• pp.111-115
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• 2009

The pharmacokinetics of cyclosporin A (CsA) after single and multiple oral dosing of new CsA self-micro-emulsifying drug delivery system (SMEDDS) in dogs were estimated. A single dose study was performed following a two-way crossover design against six dogs with reference SMEDDS. For a multiple dose study, three dogs were allocated for each drug, and 100 mg of drug was administered daily for 6 days. Whole blood concentration of CsA was analyzed by radio-immunoassay. Both drug showed identical blood concentration profiles in both studies, and no statistical difference was detected in pharmacokinetic parameters. The relative bioavailabilities of test SMEDDS were 91.4% and 89.1%, respectively, in the single dose study and the last day of multiple dose study. Especially, multiple dose study proved the good relationship between C-0/C-2 and AUC for reference SMEDDS, which is an indispensable part of therapeutic drug monitoring. These results suggest newly formulated CsA SMEDDS possibly shows identical pharmacokinetics and pharmacodynamic behaviors in clinical trials.

• 한국인구학
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• 제4권1호
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• pp.23-35
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• 1981

Health policy is directed to equity in the provision of primary care for rural people before the year of 2, 000. This study aimed to define and identify the need for physician's care by using empirical data, and suggested an alternative of the primary care delivery system in rural areas to the government. 1. Twenty percent of the study population wanted to obtain any form of medical care services. : 9.3 percent of the population was in need for physician's care; 15 percent of the need was met by physicians, while 85 percent remained unmet at the time of survey in 1979. 2. For meeting all the need for physician's primary care, 2.9 annual physician visits per capita are demanded. An alternative, which was devised in some favourable way at reasonable cost in rural settings, was suggested. It was to deploy the physician extender such as community health practitioner in the infrastructure of the health care delivery system, whose supervision is provided by physician, based on experience of the KHDI health demonstration project. 3. One physician, two community health practitioners and two community health aides should be assigned in distant locations for meeting all the estimated need for physician's primary care for 10, 000 rural underserved residents.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 추계학술대회
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• pp.180-183
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• 1997

In this paper, we present the Tele-consulting system of radiology, which uses the communication network as asymetric satellite data communication system. The asymetric satellite data communication system uses receive-only satellite links or data delivery and PSTN(Public Switched Telephone Network) modem or N-ISDN(Integrate Services Digital Network) for communication. The satellite communication linking shows the very high-speed performance than 28.8kbps modem linking. The satellite linking is 5 - 10 times aster than the modem linking. Consequently, we get the conclusion that our system is suitable or tele-radiology and telemedicine.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제7권1호
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• pp.69-76
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• 2001

It is generally said that primary health care is the base of health delivery system. But in Korea, the primary care have not performed its roles well. To resolve these problems, the government has elaborate some policy measures. One of them is 'Attending Hospital System'. The purposes of this study are to understand Attending Hospital System and to anticipate the change of general hospital and clinic by this regulation.