{"id":14330,"date":"2020-04-09T09:48:32","date_gmt":"2020-04-09T07:48:32","guid":{"rendered":"https:\/\/mag.ebmpapst.com\/en\/?p=14330"},"modified":"2024-03-12T17:54:19","modified_gmt":"2024-03-12T16:54:19","slug":"customized-drive-solutions-for-medical-equipment","status":"publish","type":"post","link":"https:\/\/mag.ebmpapst.com\/en\/industries\/medical\/customized-drive-solutions-for-medical-equipment_14330\/","title":{"rendered":"Customized drive solu\u00adtions for medical equip\u00adment"},"content":{"rendered":"

Medical tech\u00adnology is a broad field and many of its appli\u00adca\u00adtions need drive systems, including dental chairs (Fig. 1) with their adjustable head\u00adrests, diag\u00adnostic equip\u00adment and CT scan\u00adners (Fig. 2), X-ray and phys\u00adical therapy equip\u00adment, lighting systems for oper\u00adating rooms, and auto\u00admated posi\u00adtioning units in oper\u00adating tables, stair lifts and the like. Such appli\u00adca\u00adtions often call for compact drives with rela\u00adtively low power that have to work very reli\u00adably and with high posi\u00adtioning accu\u00adracy.<\/p>\n

Dura\u00adbility, quiet oper\u00ada\u00adtion, a wide range of speeds and precise speed control are addi\u00adtional require\u00adments to be met. For such cases, users are well advised to use the config\u00adurable ECI-42 drives from drive specialist ebm-papst. The modular system for drives enables customers to put together customized vari\u00adants by combining various tested and vali\u00addated modules such as brakes, encoders, etc. (Fig. 3).<\/p>\n

42 mm motor, trans\u00admis\u00adsion, brake and encoder<\/h2>\n

Figure 1: Medical equip\u00adment often needs compact and rela\u00adtively low-powered drives, for example for various adjust\u00adments on dental chairs.<\/p><\/div><\/div>\n

A great deal of appli\u00adca\u00adtion exper\u00adtise is involved in the devel\u00adop\u00adment of compact, elec\u00adtron\u00adi\u00adcally commu\u00adtated, brush\u00adless internal rotor motors. This makes them perfect for use in medical equip\u00adment, and their users benefit from complete drive solu\u00adtions from a single source. High power density makes the drives very compact, which is helpful when designing equip\u00adment as it often enables more compact dimen\u00adsions.<\/p>\n

At the heart of all the config\u00adu\u00adra\u00adtions is a brush\u00adless, elec\u00adtron\u00adi\u00adcally commu\u00adtated internal rotor motor with a diam\u00adeter of 42 mm and stator lengths of 20 or 40 mm. It achieves output levels of around 45 or 90 watts at a nominal torque of 110 or 220\u2008mNm and a nominal speed of 4,000 rpm. Its effi\u00adciency rating is up to 80%. The motors come in stan\u00addard designs of 24 and 48 VDC safety extra-low voltage. Hall sensors for rotor posi\u00adtion detec\u00adtion are inte\u00adgrated, and the motor is actu\u00adated by an external, closed-loop controller. Inte\u00adgrated elec\u00adtronics modules with func\u00adtion\u00adality such as speed or posi\u00adtion control with optional bus inter\u00adface are already in devel\u00adop\u00adment.<\/p>\n

Trans\u00admis\u00adsion and brake modules for various require\u00adments<\/h2>\n

Figure 2: CT scan\u00adners need reli\u00adable and quiet drives to mini\u00admize noise emis\u00adsions.<\/p><\/div><\/div>\n

Various trans\u00admis\u00adsion modules are avail\u00adable to reduce the high speed of the internal rotor drives and bring the drive torque to an appro\u00adpriate level for the appli\u00adca\u00adtion. Along with plan\u00ade\u00adtary and spur gears with various reduc\u00adtion ratios, space-saving EtaCrown crown gear\u00adheads based on inno\u00adv\u00ada\u00adtive crown-gear tech\u00adnology can also be supplied, for example. The Noise\u00adless\u00adPlus 42 plan\u00ade\u00adtary gear\u00adhead guar\u00adan\u00adtees ultra-quiet oper\u00ada\u00adtion and with the Optimax 42 trans\u00admis\u00adsion (Fig. 4), there is now an extremely rugged, over\u00adload-proof one- or two-stage plan\u00ade\u00adtary gear\u00adhead with IP50 or even IP54 degree of protec\u00adtion that also works with the small 42 mm drives.<\/p>\n

If the appli\u00adca\u00adtion in ques\u00adtion demands holding or safety brakes for quick emer\u00adgency stop or, for example, to safely main\u00adtain the posi\u00adtion of lifting equip\u00adment in the event of a power supply failure, modules with perma\u00adnent-magnet or spring-oper\u00adated brakes can be added to the drive unit, ruling out risks for the patient. In this way, posi\u00adtions can also be held precisely and securely over longer periods for X-rays.<\/p>\n

Measuring posi\u00adtions with high-reso\u00adlu\u00adtion encoders<\/h2>\n

An encoder module can be inte\u00adgrated in the drive unit for precise posi\u00adtion measure\u00adment. Its magnetic incre\u00admental encoder works with a reso\u00adlu\u00adtion of 12 bits, which increases depending on the selected trans\u00admis\u00adsion solu\u00adtion so that a preci\u00adsion of up to 0.08 degrees can be achieved at the output shaft. Optional lower reso\u00adlu\u00adtions are also possible.<\/p>\n

Figure 3: The ECI-42 modular system for drives enables customers to put together customized vari\u00adants by combining various tested and vali\u00addated modules.<\/p><\/div><\/div>\n

In the next stage of devel\u00adop\u00adment, there will be an absolute multi-turn module (up to 17-bit reso\u00adlu\u00adtion in the single-turn and up to 32-bit in the multi-turn range). The rota\u00adtion counter works without batteries, instead using an energy-harvesting system based on the Wiegand effect so that the energy needed to store the rota\u00adtion infor\u00adma\u00adtion is gener\u00adated from a rotating magnetic field. That makes backup batteries, trans\u00admis\u00adsions and related main\u00adte\u00adnance work unnec\u00ades\u00adsary.<\/p>\n

Prac\u00adtical connec\u00adtors<\/h2>\n

Figure 4: With the Optimax 42, there is now an extremely rugged, over\u00adload-proof one- or two-stage plan\u00ade\u00adtary gear\u00adhead with IP50 or even IP54 degree of protec\u00adtion that also works with the small 42 mm drives.<\/p><\/div><\/div>\n

Customized 42 mm drives put together using ebm-papst\u2019s modular system for drives meet the require\u00adments for IP50 or IP54 degree of protec\u00adtion and provide a variety of options for elec\u00adtrical hookup. These include industry-stan\u00addard connec\u00adtors, in which the radial angled plug with bayonet connector can rotate and engages auto\u00admat\u00adi\u00adcally. An axial plug is avail\u00adable for space-crit\u00adical appli\u00adca\u00adtions; an alter\u00adna\u00adtive, preassem\u00adbled cable connec\u00adtion is also possible.<\/p>\n

The indus\u00adtrial-grade drives are ideal for prac\u00adti\u00adcally all medical equip\u00adment appli\u00adca\u00adtions that require energy-effi\u00adcient small drives. Thanks to defined preferred types, selected drive config\u00adu\u00adra\u00adtions can be deliv\u00adered within 48 hours, which means that sampling, for example, can be done very quickly. The drives can be config\u00adured and ordered via the online portal idt-config.ebmpapst.com.<\/p>\n","protected":false},"excerpt":{"rendered":"

Medical tech\u00adnology is a broad field and many of its appli\u00adca\u00adtions need drive systems, including dental chairs (Fig. 1) with their adjustable head\u00adrests, diag\u00adnostic equip\u00adment and CT scan\u00adners (Fig. 2), X-ray and phys\u00adical therapy equip\u00adment, lighting systems for oper\u00adating rooms, and auto\u00admated posi\u00adtioning units in oper\u00adating tables, stair lifts and the like. Such appli\u00adca\u00adtions often [\u2026]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[11,20],"tags":[],"class_list":["post-14330","post","type-post","status-publish","format-standard","hentry","category-medical","category-motors"],"acf":[],"_links":{"self":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/14330","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/comments?post=14330"}],"version-history":[{"count":3,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/14330\/revisions"}],"predecessor-version":[{"id":14338,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/14330\/revisions\/14338"}],"wp:attachment":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/media?parent=14330"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/categories?post=14330"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/tags?post=14330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}