CN105212932B - A kind of intelligent organizational separating operation instrument that can detect bio-electrical impedance - Google Patents
A kind of intelligent organizational separating operation instrument that can detect bio-electrical impedance Download PDFInfo
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- CN105212932B CN105212932B CN201510755805.1A CN201510755805A CN105212932B CN 105212932 B CN105212932 B CN 105212932B CN 201510755805 A CN201510755805 A CN 201510755805A CN 105212932 B CN105212932 B CN 105212932B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011889 copper foil Substances 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
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- 239000011094 fiberboard Substances 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract 4
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- 238000001514 detection method Methods 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 8
- 239000003365 glass fiber Substances 0.000 description 5
- 238000002847 impedance measurement Methods 0.000 description 5
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- 206010020751 Hypersensitivity Diseases 0.000 description 1
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
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Abstract
Description
技术领域technical field
本发明涉及一种手术器械，特别是涉及一种能够检测生物电阻抗的智能组织分离手术器械，属于医疗器械的技术领域。The invention relates to a surgical instrument, in particular to an intelligent tissue separation surgical instrument capable of detecting bioelectrical impedance, belonging to the technical field of medical instruments.
背景技术Background technique
生物电阻抗检测技术是一种利用生物组织的电阻抗特性及其变化规律提取与人体生理、病理状况相关的生物医学信息的检测技术。这种检测技术通常需要借助至少两个电极向被检测的组织施加微弱的交流电流或电压信号,从而根据施加电流或电压大小及相位计算复阻抗,最后根据不同的应用目标获取相关的生理和病理信息。生物电阻抗检测技术具有无创、可重复使用、成本低、操作简单和检测速度快的优点。Bioelectrical impedance detection technology is a detection technology that uses the electrical impedance characteristics of biological tissues and its changing rules to extract biomedical information related to human physiological and pathological conditions. This detection technology usually needs to apply a weak alternating current or voltage signal to the detected tissue by means of at least two electrodes, so as to calculate the complex impedance according to the magnitude and phase of the applied current or voltage, and finally obtain relevant physiological and pathological parameters according to different application goals. information. Bioelectrical impedance detection technology has the advantages of non-invasive, reusable, low cost, simple operation and fast detection speed.
手术中医生通常利用视觉和触觉信息并结合术前影像数据对组织进行识别，完成钝性分离，缝合打结等操作。在实际手术中，这些信息不足以使得医生准确判断被其他组织覆盖的重要神经和血管的位置，这就影响对血管和神经的分离操作，不准确的分离会造成医疗事故。During the operation, doctors usually use visual and tactile information combined with preoperative image data to identify tissues, complete blunt dissection, suturing and knotting and other operations. In actual surgery, this information is not enough to allow doctors to accurately judge the positions of important nerves and blood vessels covered by other tissues, which affects the separation of blood vessels and nerves, and inaccurate separation will cause medical accidents.
中国专利200610161085.7公开了一种生物电阻抗测量电极，可以保证电极与被测体表紧密接触,避免电极自被测体上移动、松开或脱落的情况,有效地提高了生物电阻抗测量时测量值的准确性与可重复性。Chinese patent 200610161085.7 discloses a bioelectrical impedance measurement electrode, which can ensure that the electrode is in close contact with the measured body surface, avoiding the movement, loosening or falling off of the electrode from the measured body, and effectively improving the bioelectrical impedance measurement. Accuracy and repeatability of values.
中国专利2011100231553公开了一种用于生物电阻抗检测技术的同心圆式金属体表电极及其制造方法，可以有效降低金属体表电极与人体皮肤的接触阻抗,提高生物电阻抗检测技术的测量精度。Chinese patent 2011100231553 discloses a concentric metal body surface electrode for bioelectrical impedance detection technology and its manufacturing method, which can effectively reduce the contact impedance between the metal body surface electrode and human skin, and improve the measurement accuracy of bioelectrical impedance detection technology .
这些发明专利侧重于研究体表电极，由于结构的复杂性和生物相容性等原因不能将其用于手术中识别体内组织的场合。These invention patents focus on the research of body surface electrodes, which cannot be used to identify internal tissues during surgery due to structural complexity and biocompatibility.
发明内容Contents of the invention
本发明目的是解决现有手术器械或体表电极无法在术中识别体内组织生物电阻抗的问题，将生物电阻抗测量技术用于术中组织的识别，提供一种能够检测生物电阻抗的智能组织分离手术器械，达到提高手术安全性的目的。The purpose of the present invention is to solve the problem that the existing surgical instruments or body surface electrodes cannot identify the bioelectrical impedance of tissues in the body during the operation, use the bioelectrical impedance measurement technology for the identification of the tissue during the operation, and provide a smart device capable of detecting bioelectrical impedance. Tissue separation surgical instruments to achieve the purpose of improving surgical safety.
本发明提供的能够检测生物电阻抗的智能组织分离手术器械，包括检测电极，连接导线，阻抗分析仪和脚踏板，检测电极和脚踏板通过连接导线与阻抗分析仪连接，所述的检测电极包括两层玻璃纤维板，两层玻璃纤维板中间电镀两条用于传导电流的平行铜箔，纤维板之间的缝隙由医用粘合剂封堵，检测电极的尖端为一个倾斜表面，倾斜表面上焊接两个不锈钢半球体，两个不锈钢半球体分别与一条铜箔电连接，检测电极的另一端通过电连接器及导线与阻抗分析仪连接。The intelligent tissue separation surgical instrument capable of detecting bioelectrical impedance provided by the present invention includes a detection electrode, a connecting wire, an impedance analyzer and a foot pedal, and the detection electrode and the foot pedal are connected to the impedance analyzer through a connecting wire, and the detection The electrode consists of two layers of glass fiber boards. Two parallel copper foils are plated in the middle of the two layers of glass fiber boards to conduct current. The gap between the fiber boards is sealed by medical adhesive. The tip of the detection electrode is an inclined surface, which is welded on the inclined surface. Two stainless steel hemispheres, the two stainless steel hemispheres are respectively electrically connected to a piece of copper foil, and the other end of the detection electrode is connected to the impedance analyzer through an electrical connector and wires.
所述检测电极的倾斜表面尖端的前缘为圆弧形。The front edge of the tip of the inclined surface of the detection electrode is arc-shaped.
本发明的优点和积极效果：Advantage and positive effect of the present invention:
本发明具有无创、廉价、安全、无毒害、操作智能和信息丰富等特点。The invention has the characteristics of non-invasive, cheap, safe, non-toxic, intelligent operation, rich information and the like.
附图说明Description of drawings
图1是能够检测生物电阻抗的智能组织分离手术器械示意图。Fig. 1 is a schematic diagram of an intelligent tissue separation surgical instrument capable of detecting bioelectrical impedance.
图2是检测电极俯视图。Fig. 2 is a top view of the detection electrode.
图3是检测电极侧视图。Fig. 3 is a side view of a detection electrode.
图中，1检测电极，2连接导线，3阻抗分析仪，4脚踏板，5不锈钢半球体，6玻璃纤维板，7铜箔，8电连接器。In the figure, 1 is a detection electrode, 2 is a connecting wire, 3 is an impedance analyzer, 4 is a pedal, 5 is a stainless steel hemisphere, 6 is a glass fiber board, 7 is copper foil, and 8 is an electrical connector.
具体实施方式Detailed ways
手术器械如图1所示，包括检测电极1，连接导线2，阻抗分析仪3和脚踏板4。The surgical instrument is shown in FIG. 1 , including a detection electrode 1 , a connecting wire 2 , an impedance analyzer 3 and a pedal 4 .
检测电极1如图2和3所示，其长度为200mm，由厚度为1mm的两层玻璃纤维板6中间电镀两条宽度为1mm间距为3mm厚度为0.02mm且相互平行的铜箔7组成(纤维板之间的缝隙由医用粘合剂封堵)，检测电极的左端是一个倾斜表面，用于接触待检测的组织，右端引出电连接器8，连接阻抗分析仪3。Detecting electrode 1 is as shown in Figure 2 and 3, and its length is 200mm, is that two layers of glass fiber boards 6 that thickness is 1mm are plated two copper foils 7 that width is 1mm spacing is 3mm and thickness is 0.02mm and is made up of parallel to each other (fiber boards) The gap between them is blocked by medical adhesive), the left end of the detection electrode is an inclined surface, which is used to contact the tissue to be detected, and the right end leads out to an electrical connector 8, which is connected to the impedance analyzer 3.
如图2和3所示，检测电极1尖端的倾斜表面上焊接两个不锈钢半球体5，两个不锈钢半球体分别与其中的一条铜箔电连接，半球体直径1.5mm，球表面电镀金，厚度不小于0.01mm。两个半球体球心距离等于两条铜箔间的距离。检测电极1的尖端能够保证在检测电阻抗的同时对组织进行钝性分离操作，同时倾斜表面尖端部位的前缘为圆弧形，圆弧半径为0.3mm，这能够保证不损伤组织。手术中用焊接半球体的一侧接触需要识别和分离的组织，根据采集的电阻抗值判断组织类型，进而决定是否继续钝性分离操作。As shown in Figures 2 and 3, two stainless steel hemispheres 5 are welded on the inclined surface of the tip of the detection electrode 1, and the two stainless steel hemispheres are electrically connected to one of the copper foils respectively. The thickness is not less than 0.01mm. The distance between the centers of the two hemispheres is equal to the distance between the two copper foils. The tip of the detection electrode 1 can ensure the blunt separation operation on the tissue while detecting the electrical impedance. At the same time, the front edge of the tip of the inclined surface is arc-shaped with a radius of 0.3mm, which can ensure that the tissue will not be damaged. During the operation, one side of the welding hemisphere is used to contact the tissue that needs to be identified and separated, and the tissue type is judged according to the collected electrical impedance value, and then it is decided whether to continue the blunt separation operation.
检测电极1所采用的玻璃纤维板6在人体内理化性能稳定，具有很强的耐腐蚀性，不会释放重金属离子产生毒性或导致人体的过敏反应。金是生物相容性最好的金属,不与人体组织起任何反应。The glass fiber plate 6 used in the detection electrode 1 has stable physical and chemical properties in the human body, has strong corrosion resistance, and will not release heavy metal ions to cause toxicity or cause allergic reactions in the human body. Gold is the most biocompatible metal and does not react with human tissues.
连接导线2为屏蔽双绞线，每股线截面积不小于0.5mm2。The connecting wire 2 is a shielded twisted pair, and the cross-sectional area of each strand is not less than 0.5mm2.
阻抗分析仪3检测生物电阻抗的频率范围是200kHz-2MHz，可由医生设定，检测误差不大于1％。电阻抗值的采样频率为不低于5Hz，所加电流强度不高于1mA。由于该手术器械是医生手持操作，人的手臂不可避免的存在生理性颤抖，所以显示的电阻抗测量值是0.5秒内数据的平均值。The frequency range of the impedance analyzer 3 for detecting bioelectrical impedance is 200kHz-2MHz, which can be set by a doctor, and the detection error is not greater than 1%. The sampling frequency of the electrical impedance value is not lower than 5Hz, and the applied current intensity is not higher than 1mA. Since the surgical instrument is operated by the doctor's hand, the human arm inevitably trembles physiologically, so the displayed electrical impedance measurement value is the average value of the data within 0.5 seconds.
阻抗测量功能的开启由脚踏板4控制。踩下脚踏板4后，阻抗分析仪3通过电极的两个半球体向组织提供高频微弱电流，达到测量组织电阻抗的目的。松开脚踏板后，阻抗分析仪3停止工作。The opening of the impedance measurement function is controlled by the foot pedal 4 . After stepping on the pedal 4, the impedance analyzer 3 provides high-frequency weak current to the tissue through the two hemispheres of the electrode, so as to achieve the purpose of measuring the electrical impedance of the tissue. After the pedal is released, the impedance analyzer 3 stops working.
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| CN100584269C (en) * | 2006-12-05 | 2010-01-27 | 重庆博恩富克医疗设备有限公司 | A bioelectrical impedance measurement electrode and measurement method |
| CN101716073B (en) * | 2009-12-09 | 2011-07-20 | 中国科学院半导体研究所 | Invasive inclined needle skin-painless dry electrode device for recording electro-physiological signals for long term |
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