• Title, Summary, Keyword: Needle

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The Spark Voltage Characteristics of Needle Gaps (침단간극의 불꽃 전압특성)

  • 정성계
    • 전기의세계
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    • v.26 no.3
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    • pp.69-72
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    • 1977
  • The effects of sharpness of needle electode on the spark voltage in needle-plane and needle-needle spark gaps at atmospheric pressure was investigated experimentaly in this paper. As the sharpness of needle electrode increases, the spark voltage increases, and the rate of increase is greater in needle-needle electrode than in needle-plane gap. the effects of sharpness is greater in small gap length. These characteristics can be explained by the electric field strength at the needle tip depending on the sharpness of needle, electro-static capacity between the electrodes, and the polarity effect in needle-plane gap. These experimental results will be able to play an important roles on the design of needle-needle gap as high voltage measurement devices and of needle-plane gap as high voltage rectifier equipments.

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A study to identify an occupational hazards for hospital working health care providers from needle stick injury as an occupational hazards of health care providers in hospital and prevention (의료요원의 주사바늘 상해 실태와 예방대책을 위한 일 연구)

  • Han, Jung-Suk;Kang, Kyu-Sook;Kim, Hea-Sook
    • The Korean Nurse
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    • v.34 no.2
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    • pp.45-57
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    • 1995
  • A study .to identify an occupational hazards for hospital working health care providers from needle stick injury as an occupational hazards of health care providers in hospital and prevention A survey of 2430 health professionals (2184 nurses, 182 doctors, and 64 Lab technicians) was conducted to describe and provide information about 1) the experience of needle stick. 2) the number of needle stick, 3) the treatment after needle stick. 3) the situation of needle stick, 4) the report of needle stick, 5) the cause of needle stick, 6) the discard method of used needles, and 7) how to worry about getting infection disease after needle stick. Data were collected using questionnarires constructed by the authors and tested by a pilot study. Results of the study showed that 96.7% of the sample had an experience of needle stick (96.8% of the nurses, 96.7% of the doctors, and 92.2% of Lab technicians). Seventy seven percent of the sample experienced less than 10 needle sticks, 19% of the sample experienced 11 to 20 needle sticks, and the rest of the sample experienced more than 20 needle sticks. The situations where needle sticks occurred include intrvenous injection (36.5%), intramuscular injection (21.6%), blood withdraw (17.8%), and preparation(11.8%). The study showed that needle sticks (67.5%) usually occurred after client treatment. Health professionals used recapping method (55%) after they used needles. Needle sticks were predominantly caused by the carelessness of health professionals (61%), After needle sticks, 88.2% of the sample subjects treated needle sticks using disinfection technique by themselves. Most of health professionals (92.6%) did not report the accident. and 95.6% of them did not receive any test or further treatment. After needle sticks, 87.8% of nurses, 83.6% of doctors, and 96.6% of lab technicians worried about hepatitis infection. 'Health professionals also worried about AIDS infection, tetanus, venereal infection, and skin injury. These findings suggest that health professionals are at high-risk of needle stick and fail to report needle stick accidents. They should pay more attention to needle stick in order to avoid unwanted infection.

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Effects of Sewing Conditions for Knitted Fabric on the Heat Generation of Sewing Needle (재봉바늘의 열발생에 미치는 편성물봉제조건의 영향)

  • 이춘규
    • Journal of the Korean Home Economics Association
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    • v.24 no.3
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    • pp.59-67
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    • 1986
  • The heat of sewing needle is generated through the friction during the needle penetration into and withdrawal from fabrics. Therefore, effects of sewing condition for knitted fabric on the heat generation of needle was examined. The needle size was not the large influence factor of heat generation of needle but the needle point shape significantly affects needle temperature. And the super needle coated with fluoro resin had more effect on reducing the heat of needle. The decrease of sewing speed and the increase of stitch rate had more effect on the reduction in needle temperature. Also the Influence of a sewing thread on the needle temperature was very large compared with bare needle. As expected, an increase in the number of fabric layers result in higher needle temperature.

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Comparative Study of Needle Sensations in $ST_{36}$ and 6 Models with Quantifying Measurement System (정량적 측정 시스템을 이용한 족삼리와 6가지 모델의 침감 비교 연구)

  • Han, Ye Ji;Jo, Su Jeong;Son, Young Nam;Lee, Soo Yoon;Kim, Kap Sung;Lee, Seung Deok
    • Journal of Acupuncture Research
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    • v.30 no.5
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    • pp.87-94
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    • 2013
  • Objectives : In this study, we intended to make the foundation of the development of acupuncture tissue model as comparing the needle sensation of six kinds of tissue models and Zusanli ($ST_{36}$) with the needle force measurement system. Methods : When practitioners did twisting-rotating acupuncture needle manipulation after inserting the needle into six kinds of tissue models, they quantified the similarity sense to the sensation of Zusanli ($ST_{36}$) with the NRS (Numeric Rating scale). As needle force measurement system did twisting-rotating Acupuncture needle manipulation after inserting needle into Zusanli ($ST_{36}$) of human and six kinds of tissue models, it can calculate the coefficient of viscosity by measuring the torsion friction. We compare the NRS of practitioners' needle sensation to the coefficient of viscosity of needle force measurement systems. Result : As practitioners' NRS assessment to quantify needle sensation, apple and cucumber showed 70% similarity to Zusanli ($ST_{36}$). As needle force measurement system's coefficient of viscosity, apple and cucumber's coefficient of viscosity were similar to Zusanli ($ST_{36}$)'s. Conclusions : In this study, We compared the practitioners' needle sensation of Zusanli ($ST_{36}$) and six kinds of tissue models with needle force measurement system that can quantify the needle sensation. As the result, we concluded that practitioners' needle sensation is similar to measured needle sensation. It seems that the acupuncture practice model implementing the needle sensation to specific acupuncture points can be built based on the system in this study.

Effect of needle type on intravascular injection in transforaminal epidural injection: a meta-analysis

  • Kim, Jae Yun;Kim, Soo Nyoung;Park, Chulmin;Lim, Ho Young;Kim, Jae Hun
    • The Korean Journal of Pain
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    • v.32 no.1
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    • pp.39-46
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    • 2019
  • Background: Lumbosacral transforaminal epidural injection (TFEI) is an effective treatment for spinal disease. However, TFEI may have several types of complications, some of which can be attributed to intravascular injection. We reviewed studies to compare the intravascular injection rate among different needle types. Methods: We searched the literature for articles on the intravascular injection rate among different needle types used in TFEI. The search was performed using PubMed, MEDLINE, the Cochrane Library, EMBASE, and Web of Science. Results: A total of six studies comprising 2359 patients were identified. Compared with the Quincke needle, the Whitacre needle reduced the intravascular injection rate (OR = 0.57, 95% CI = [0.44-0.73], P < 0.001). However, compared with the Quincke needle, the Chiba needle did not reduce the intravascular injection rate (OR = 0.80, 95% CI = [0.44-1.45], P = 0.46). In one study, the intravascular injection rate using a blunt-tip needle was lower than that using a sharp needle. In another study, the Whitacre and the blunt-tip needle have similar intravascular injection rates, while, the catheter-extension needle showed a reduced intravascular injection rate. Conclusions: This meta-analysis showed that the Whitacre needle reduced the intravascular injection rate as compared with the Quincke needle, but failed to establish that the Chiba needle can decrease the intravascular injection rate in TFEI. Moreover, the blunt-tip needle can reduce the intravascular injection rate compared with the Quincke needle, and the catheter-extension needle can reduce the intravascular injection rate compared with the Whitacre and the blunt-tip needle.

Effect of Various Sewing Conditions on the Penetration Energy of Sewing Needle (봉제조건이 바늘의 관통 에너지에 미치는 영향)

  • 서정권;최영엽
    • Textile Science and Engineering
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    • v.33 no.1
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    • pp.76-82
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    • 1996
  • The Penetration force and energy Per cycle developed during needle Penetration into and withdrawal from a fabric were measured on a sewing machine attached penetration force detector. Five major variables considered were sewing speed, needle diameter, needle point shape, needle surface finish, and number of fabric plies. It was found that the sewing speed had little effect on the penetration energy in the range of actual sewing speed. The needle diameter significantly affected the penetration energy, but the needle size did not affect the heat of the needle. The heat rises as the needle diameter increases, however, the increase of the heat dissipation due to the heat conduction and heat convection did not show much difference in the needle temperature. The usage of medium ballpoint needle was effective in reducing the penetration energy according to the type of fabric and especially the usage of super needle distinctly lowered the penetration energy. As expected, the number of fabric plies were the most important factors influencing the penetration energy.

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Illustrations of the Nine Types of Needles based on Huangdi's Internal Classic Ling-shu

  • Kim, Hyo Jin;Lee, Kwang Ho;Yang, Gi Young
    • Journal of Acupuncture Research
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    • v.36 no.1
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    • pp.38-44
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    • 2019
  • Background: The phrase "Nine Needles" refers to the 9 types of acupuncture needles describing their shapes, sizes, and uses in Huangdi's Internal Classic Ling-shu. The aim of this study was to present 3D illustrations of the "Nine Types of Needles" based on Huangdi's Internal classic Ling-shu, taking into consideration the conformation and application of the Nine Needles. Methods: Sketches of the "Nine Needles" were based on references to those needles cited in Huangdi's Internal Classic Ling-shu, the Great Compendium of Acupuncture and Moxibustion, and the Golden Mirror of Medicine. The computer programs Creo 3.0, Keyshot 5, Adobe Photoshop CS5, and Adobe Illustrator CS5 were used for 3D modelling and visualization. Results: Based on a review of Huangdi's Internal Classic Ling-shu, illustrations of the Spade needle, Round-Pointed needle, Pressure needle, Sharp-Edged needle, Sword-Shaped needle, Round-Sharp needle, Fine needle, Long needle, and Large needle, 3D models were created. The Spade needle had a sharp, large head, the Round-Pointed needle had an egg-shaped tip, and the Pressure needle had a blunt head like a grain of millet. The Sharp-Edged needle had a sharp blade with a triangular edge for bloodletting. The Sword-Shaped needle resembled a sword. The Round-Sharp needle resembled a horse's tail. The Fine needle and the Long needle had sharp points and thin bodies. The Large needle had a cylindrical shaft and rounded tip. Conclusion: This study demonstrated that 3D illustrations could be generated for the Nine Needles according to the descriptions and figures provided in the ancient literature.

Studies on the Effect of Needle Temperature on the Sewability during Sewing(I) (봉제시 바늘의 온도가 가봉성에 미치는 영향에 관한 연구(I))

  • 서정권;최영엽
    • Textile Science and Engineering
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    • v.23 no.5
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    • pp.11-19
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    • 1986
  • The influences of machine factors and material factors on the needle temperature due to the frictional heat generation between fabric and needle during sewing was investigated and the heat losses of needle due to the convection heat transfer was discussed. It was found that the needle size had very little effect on the needle temperature but the mediumball point needle and super needle were effective in reducing heat generation. The approximate values of convection heat transfer coefficient of needles decrease with the increase in needle size. The sewing speed and number of fabric layers were apparently the largest influence of heat generation of needle. In the case of using sewing thread, the needle temperature was decreased remarkably.

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Contemporary Application of Roller Needle and Stamp Needle: A Patent Review (국내 특허 분석을 통한 롤러침 및 도장침의 현대적 활용)

  • Jeong, Seung-Yeon;Park, Ji-Yeun;Kim, Youn-Sub;Kim, Song-Yi
    • Korean Journal of Acupuncture
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    • v.36 no.3
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    • pp.139-149
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    • 2019
  • Objectives : A dermal needle is one of the therapeutic method by stimulating or tapping on the certain points of skin. Recently, roller or stamp-needle have been applied to various diseases in combination with microneedle technology. In this study, we analyzed the trend of roller and stamp-needle in Korean patent. Methods : Electronic search for Korean patent of roller or stamp needle was performed in Korea Intellectual Property Right Information Service database to April, 2019. Results : Sixty seven patents (51, roller-needle; 15, stamp-needle; 1, both types of needle) met the inclusion criteria. According to patent details, 34 of 67 patents were skin stimulation, 14 patents were intended to increase the efficiency of drug delivery through skin stimulation, 16 patents combined skin stimulation with technologies such as electrode or high frequency, and three patents applied both electrode or high frequency stimulation, and drug application as well as physical skin stimulation. Each of these patents aims to increase the efficiency of the needle manufacturing process (n=24), to facilitate the use of tools or to increase the efficiency of the technology (n=61), or to increase the technical skill of the needle itself (n=23). Conclusions : This study confirms that technological advances were being made by combining various types of stimuli to dermal needle and there have been attempts to expand the scope of drug delivery in terms of application of dermal needle. In the future, more research and development is needed in order to apply the dermal needle to modern technology.

A study of Literature review on the retaining needle (유침(留針)에 관한 문헌적(文獻的) 고찰(考察))

  • Park, Chun-ha;Kim, Jae-hong;Wu, Tung-sun;Park, Eun-ju;Shin, Jung-chul;Han, Sang-gyun;Yun, Yeu-chung;Cho, Myung-rae
    • Journal of Acupuncture Research
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    • v.20 no.1
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    • pp.85-96
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    • 2003
  • Objectives : We were studied the retaining needle to offer basic materials for the study of it. methods: To study the retaining needle, we were reviewed the ancient, the present text and the thesis. Results: 1. There are many ways form general acupuncture technique to needle-embedding therapy by the spending time of the retaining needle. 2. The method retaining needle is divided into Active method of the retaining needle(動留針法) and Passive methoid of the retaining needle(靜留針法) by the existence of Qi-promoting. 3. In case of Deficiency Syndrome, protracted discase, dolorific disorder, convulsive disorder, and Cold Syndrome, the spending time of the retaining needle takes longer, in case of Heat Syndrome and exterior Syndrome, the spending time of the retaining needle takes shorter. 4. In case of acute disease and attack of chronic disease, we can use Active methoid of the retaining needle(動留鍼法) with retaining needle for a long time, in case of chronic disease, we can use Passive methoid of the retaining needle(靜留針法). 5. In case of Young people, a man in the prime of life, and a people who can stand the stimulation of needle, we can make the spending time of the retaining needle be longer and use Active methoid of the retaining needle(動留針法), but in case of a baby and a weak people, we had better shorten the spending time of the retaining needle or not do it. 6. The spending time of the retaining needle must be shorter in spring and summer, must be longer in fall and winter. 7. The spending time of the retaining needle is various by acupuncture point. 8. When the spending time of the retaining needle is too longer, we can injure Vital-qi of a patient, otherwise in opposite situation, Pathogenic is stagnated so pathogenic stage is repeated.

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