BS 7088-1989 Specification for pneumatic tourniquet equipment《充气式止血带装置规范》.pdf
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1、BRITISH STANDARD BS 7088:1989 Specification for Pneumatic tourniquet equipment UDC 615.47:615.815.616-089.811:621.8.033:661.91:620.1BS7088:1989 This British Standard, having been prepared under the directionof the Health Care Standards Policy Committee, waspublished under the authorityof the Board o
2、f BSI andcomes into effect on 30June1989 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference HCC/12 Draft for comment 87/53102 DC ISBN 0 580 17050 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted b
3、y the Health Care Standards Policy Committee (HCC/-) to Technical Committee HCC/12, upon which the following bodies were represented: Association of Anaesthetists of Great Britain and Ireland British Orthopaedic Association British Surgical Trades Association Incorporated Casualty Surgeons Associati
4、on Department of Health Scottish Health Services Amendments issued since publication Amd. No. Date of issue CommentsBS7088:1989 BSI 01-2000 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Cuffs 1 3 Hoses and connectors 1 4 Pressure gauges 1 5 Elapsed time indicator
5、2 6 Pressure source 2 7 Cuff pressure regulation 2 8 Mobile tourniquet equipment 2 9 Marking 2 10 Accompanying documents 3 Appendix A Recommendations on distribution of pressure under the cuff 4 Appendix B Test for construction of cuffs and performance of fastenings 4 Appendix C Test for leaks from
6、hoses and connectors 4 Appendix D Test to simulate exhaustion or interruption of the gas supply 4 Appendix E Test for indication of deflation 4 Appendix F Test for pressure compensation 4 Appendix G Stability of mobile tourniquet equipment 5 Table 1 Internal dimensions of inflatable bag, measured wh
7、en deflated 1 Table 2 Test for distribution of pressure 4 Publications referred to Inside back coverBS7088:1989 ii BSI 01-2000 Foreword This British Standard has been prepared under the direction of the Health Care Standards Policy Committee at the request of the Scottish Health Service. It is inten
8、ded to encourage the manufacture of safer tourniquet equipment. The main use of pneumatic tourniquet equipment is to maintain a blood-free field during limb surgery. It is also, however, used extensively as part of the Biers Block technique for intravenous analgesia of the limbs where the function o
9、f the tourniquet is to isolate the analgesic from the main circulation. Cuffs currently available have been shown to produce areas of low pressure which, if sited over a vein, facilitate the escape of anaesthetic into the blood circulation despite arterial occlusion. Attention is drawn to Appendix A
10、 of this British Standard, which recommends that manufacturers perform a test to determine the uniformity of pressure distribution on a dummy limb. The technical committee responsible for this British Standard was unable to include this test as a requirement because of lack of test data and lack of
11、agreement on suitable transducers. The technical committee intends, however, to carry out further studies and to convert the recommendations given in Appendix A into requirements, perhaps with modifications. A British Standard does not purport to include all the necessary provisions of a contract. U
12、sers of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 to 6, an inside back cover and
13、a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS7088:1989 BSI 01-2000 1 1 Scope This British Standard specifies constructional, safety and performance requirements fo
14、r pneumatic tourniquet equipment. It covers manually inflated tourniquets, such as those provided with rubber bulbs or piston pumps. It also covers powered tourniquets, such as those provided with an integral source of compressed or liquefied gas or a connection to an external supply of compressed g
15、as, either from a cylinder or from a piped medical gas supply in a hospital. It includes fully automatic tourniquet equipment which inflates the cuff to a set pressure and thereafter compensates for pressure losses, semi-automatic tourniquet equipment that inflates the cuff to a set pressure but doe
16、s not compensate for subsequent pressure losses, and non-automatic tourniquet equipment. It does not cover tourniquet equipment which includes an integral electrically driven air pump (see BS 5724-1). NOTEThe titles of the publications referred to in this standard are listed on the inside back cover
17、. 2 Cuffs 2.1 Size, designation and dimensions of inflatable bag The size, designation and dimensions shall be as given in Table 1. 2.2 Construction of cuff 2.2.1 Fastenings. When tested in accordance with Appendix B, none of the recorded pressures shall be lower than 97 kPa (730 mmHg) 1) . 2.2.2 St
18、rength. When tested in accordance with Appendix B, the materials of construction shall not tear, the seams shall not be damaged and the fastenings shall remain effective. Table 1 Internal dimensions of inflatable bag, measured when deflated 3 Hoses and connectors 3.1 Source supply hoses Hose assembl
19、ies intended to connect the equipment to a piped medical gas supply shall comply with the appropriate requirements of clause 15 of BS5682:1984 and shall terminate in a medical airprobe, 400 kPa, complying with 11.2 of BS5682:1984. 3.2 Cuff hoses 3.2.1 Hose assemblies intended to connect the cuffs to
20、 the equipment shall be either: a) permanently attached to the cuff; or b) connected to the cuff by locking connectors that are permanently attached to the hoses. The connectors shall not be Luer fittings. NOTEThe exclusion of Luer fittings is intended to prevent the use of sphygmomanometer cuffs wh
21、ich are not intended to be inflated above a pressure of 40 kPa (approximately 300 mmHg). 3.2.2 When tested in accordance with Appendix C, there shall be no escape of bubbles. 4 Pressure gauges 4.1 General Pressure gauges shall comply with BS 1780. Gauges shall have pointer stop pins, which shall be
22、positioned on the ungraduated portion of the dial. Gauges shall be graduated from 0 mmHg to750mmHg at intervals of 10 mmHg. The scale markings at 100 mmHg intervals shall be longer than those at 10 mmHg intervals and shall be numbered. 4.2 Cuff pressure gauges 4.2.1 A pressure gauge shall be provide
23、d to indicate the actual pressure in the cuff. If a facility for preselecting the cuff pressure is provided, it shall be by the use of either: a) a separate pressure gauge to indicate the selected pressure; or b) a spring-return switch on the cuff pressure gauge which permits the display of the sele
24、cted pressure during its period of operation only. NOTEThe provision of a single gauge to indicate both actual and selected pressures on equipment that does not comply with4.2.1 b) has led to accidents due to the cuff being mistakenly thought to be inflated. 4.2.2 With tourniquet equipment that is i
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