CN113117181B - 集成型闭环人工胰腺 - Google Patents

集成型闭环人工胰腺 Download PDF

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Publication number
CN113117181B
CN113117181B CN202010870569.9A CN202010870569A CN113117181B CN 113117181 B CN113117181 B CN 113117181B CN 202010870569 A CN202010870569 A CN 202010870569A CN 113117181 B CN113117181 B CN 113117181B
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infusion
insulin
module
electrode
artificial pancreas
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CN113117181A (zh
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杨翠军
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Medtrum Technologies Inc
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Medtrum Technologies Inc
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Abstract

本发明公开了一种集成型闭环人工胰腺,包括:检测模块,检测模块包括至少两个电极;程序模块用于获取包括用户每天输注的胰岛素量数据,程序模块还被导入每日胰岛素总量算法和当前胰岛素输注量算法;输注模块,输注模块与程序模块相连;输注管,输注管为胰岛素输注通道,电极设置于输注管的管壁,根据当前胰岛素输注量数据,程序模块控制输注模块输注胰岛素,胰岛素经输注管流向体内。一次在同一位置穿刺即可完成检测和输注。

Description

集成型闭环人工胰腺
技术领域
本发明主要涉及医疗器械领域,特别涉及一种集成型闭环人工胰腺。
背景技术
糖尿病主要是人体胰腺功能异常导致的代谢类疾病,糖尿病为终身疾病,目前医疗技术尚无法根治糖尿病,只能通过稳定血糖来控制糖尿病及其并发症的发生和发展。正常的人体胰腺可自动监测人体的血液葡萄糖含量的变化,并自动分泌所需的胰岛素。目前,用于稳定血糖的医疗设备的工作方式为:通过植入人体皮下组织的葡萄糖传感器,实时动态监测人体血糖变化;再通过植入人体皮下组织的软管,可连续24小时向人体皮下组织精确输注胰岛素。
目前,检测设备与输注设备互相连接,通过程序模块的处理,检测设备与输注设备组成人工胰腺,输注设备根据检测设备的数据,自动给药。在程序模块计算胰岛素输注量时,每日胰岛素总量(Total Daily Dose,TDD)是一个重要的参数,且决因素有很多,如身体状况、生理状况等。因此,准确获得TDD数值至关重要。
但是,现有的设备需要在人体皮肤表面多处穿刺分别放置传感器探头和输注管。即使目前有一些设备能够将传感器探头和输注管集成在一个设备中,但是还需要在不同的位置分别穿刺,增加了用户感染的风险。同时,还需要手动输入身体状况参数,不能准确获得TDD的数值,导致当前胰岛素输注量不准确,用户体验较差。
因此,现有技术亟需一种在一个位置穿刺即可同时完成检测和输注目的,且能准确计算当前胰岛素输注量的集成型闭环人工胰腺。
发明内容
本发明实施例公开了一种集成型闭环人工胰腺,输注管上设置多个电极,输注管本身作为输注通道并设置有检测电极。一次在一个位置穿刺,即可完成血糖检测和胰岛素输注,降低了用户感染的风险。同时,该人工胰腺能够准确计算每日胰岛素总量(TDD)的数值和当前胰岛素输注量,增强用户体验。
本发明公开了一种集成型闭环人工胰腺,包括:检测模块,检测模块用于检测血糖参数,检测模块包括至少两个电极;与检测模块相连接的程序模块,程序模块用于获取包括用户每天输注的胰岛素量数据,程序模块还被导入每日胰岛素总量算法和当前胰岛素输注量算法,其中,根据用户每天输注的胰岛素量数据,每日胰岛素总量算法用于计算每日胰岛素总量;根据血糖参数数据、用户每天输注的胰岛素量数据或者每日胰岛素总量数据,当前胰岛素输注量算法用于计算当前胰岛素输注量;输注模块,输注模块与程序模块相连,输注模块包括作为胰岛素输注通道的输注管,电极设置于输注管的管壁,根据当前胰岛素输注量数据,程序模块控制输注模块输注胰岛素。
根据本发明的一个方面,电极设置于输注管管壁外表面或者设置于输注管管壁中。
根据本发明的一个方面,电极设置于输注管皮下部分管壁外表面,输注管管壁外表面还设置有与电极电连接的电极导线。
根据本发明的一个方面,输注管包括内层管和至少一层外层管,外层管设置于内层管的外部,内层管用于输注胰岛素。
根据本发明的一个方面,至少一个电极设置于内层管外壁与最外层的外层管之间。
根据本发明的一个方面,输注管被安装至工作位置时,位于内层管管壁外表面的电极完全裸露在皮下组织液中,或者被外层管全部或部分覆盖。
根据本发明的一个方面,当位于内层管管壁外表面的电极被外层管全部或者部分覆盖时,外层管的管壁材料为渗透膜或者半渗透膜。
根据本发明的一个方面,电极包括工作电极和辅助电极,工作电极和辅助电极的数量分别为一个或多于一个。
根据本发明的一个方面,多个电极组成一个或多个电极组合,每个电极组合包括工作电极与辅助电极,检测模块使用一个或多个电极组合检测血糖参数。
根据本发明的一个方面,程序模块包括手动输入界面或者自动检测子模块,用于获取用户每天输注的胰岛素量数据,获取方法包括:通过手动输入界面,用户将每天输注的胰岛素量数据手动输入至程序模块;或者自动检测子模块自动检测,存储并计算用户每天输注的胰岛素量数据。
根据本发明的一个方面,用户每天输注的胰岛素量数据包括每天输注的胰岛素总量数据,或者不同时间段所输注的大剂量和基础量数据,或者临时基础量和矫正大剂量数据,或者在不同事件发生后,输注模块的输注数据。
根据本发明的一个方面,每日胰岛素总量为每日胰岛素总量算法通过计算前两天或者前更多天每天输注的胰岛素总量数据而得到,每日胰岛素总量为每天输注的胰岛素总量数据的平均值或者中位数,且每日胰岛素总量为当前胰岛素输注量算法的一个变量因子。
根据本发明的一个方面,每日胰岛素总量算法的变量因子包括身体活动状况、生理状况、心理状况、进食状况中的一种或多种。
根据本发明的一个方面,身体活动状况包括普通身体伸展、运动锻炼或者睡眠,且身体活动状况为当前胰岛素输注量算法的一个变量因子。
根据本发明的一个方面,还包括用于自动检测用户的身体活动运动传感器,运动传感器设置于检测模块、程序模块或者输注模块中。
根据本发明的一个方面,运动传感器包括三轴加速度传感器或者陀螺仪。
根据本发明的一个方面,检测模块、程序模块和输注模块相连接组成一个整体结构,并粘贴在皮肤的同一位置。
与现有技术相比,本发明的技术方案具备以下优点:
本发明公开的集成型闭环人工胰腺中,至少两个电极设置于输注管管壁。输注管同时起到电极检测和胰岛素输注的作用,一次在一个位置穿刺,即可完成血糖检测和胰岛素输注,降低了用户感染的风险。其次,程序模块被导入每日胰岛素总量算法和当前胰岛素输注量算法,根据当前胰岛素输注量算法的计算结果,程序模块控制输注模块输注当前所需剂量的胰岛素。程序模块被导入每日胰岛素总量算法和当前胰岛素输注量算法,单独或者结合使用检测数据、用户每天输注的胰岛素量数据和每日胰岛素总量数据,计算所得的当前胰岛素输注量将更准确。
进一步的,当位于内层管管壁外表面的电极被外层管全部或者部分覆盖时,外层管的管壁材料为渗透膜或者半渗透膜。采用渗透膜或者半渗透膜的管壁只能允许特定分析物透过,减弱其它物质的干扰,提高分析物参数的检测准确性,同时也灵活选择电极的位置设计。
进一步的,多个电极组成一个或多个电极组合,每个电极组合包括工作电极与辅助电极,检测模块选择一个或多个电极组合检测血糖参数。一方面,当一个电极组合出现故障,检测模块可以根据情况选择其他电极组合进行检测,确保体液信号的检测过程不间断。另一方面,检测模块可以选择多个电极组合同时工作,将同一时刻同一参数的多组数据进行统计分析,提高血糖参数的检测准确性,使程序模块发出更准确的输注信号。
进一步的,程序模块包括手动输入界面或者自动检测子模块,用于获取用户每天输注的胰岛素量数据,获取方法包括:通过手动输入界面,用户将每天输注的胰岛素量数据手动输入至程序模块;或者自动检测子模块自动检测,存储并计算用户每天输注的胰岛素量数据。手动输入界面或者自动检测子模块可单独使用,或者两者结合使用,增强用户使用设备的灵活性。再者,在手动输入界面和自动检测子模块结合使用的前提下,自动检测的数据与手动输入数据可以被结合对比,程序模块可实时调整算法,使得计算结果更准确。
进一步的,身体活动状况包括普通身体伸展、运动锻炼或者睡眠。人工胰腺可将普通活动、运动和睡眠区别开,使得人工胰腺更精细化地控制血糖水平。
进一步的,运动传感器设置于检测模块、程序模块或者输注模块中。运动传感器设置于人工胰腺的模块中能够尽可能提高人工胰腺的集成度,减小设备的体积,增强用户体验。
进一步的,运动传感器包括三轴加速度传感器或者陀螺仪。三轴加速度传感器或者陀螺仪能够更准确感应到身体的活动强度、活动方式或者身体姿态,最终使输注量的计算结果更准确。
进一步的,检测模块、程序模块和输注模块相连接组成一个整体结构,并粘贴在皮肤的同一位置。三个模块连接成一个整体并粘贴在同一位置,用户皮肤粘贴设备的数量将减少,进而减弱因粘贴较多设备对用户活动伸展的干扰;同时,也有效解决了分离设备之间无线通信不畅的问题,进一步增强用户体验。
附图说明
图1为根据本发明一个实施例集成型闭环人工胰腺模块关系示意图;
图2为根据本发明一个实施例集成型闭环人工胰腺的输注管位于工作位置的剖面示意图;
图3a-图3b为根据本发明一个实施例输注管上设置两个电极的局部纵向剖面图;
图4a-图4c为根据本发明另一个实施例输注管和两个电极的局部纵向剖面图;
图5为根据本发明又一个实施例输注管上设置三个电极的局部纵向剖面图;
图6为根据本发明再一个实施例输注管包括内层管和外层管的的局部纵向剖面图。
具体实施方式
如前所述,现有技术的设备在维持体液参数稳定时,检测和输注分开进行,需要在人体表面多处穿刺,增大用户痛感的同时,也增加了用户感染的风险。同时,还需要手动输入身体状况参数,不能准确获得TDD的数值,导致当前胰岛素输注量不准确,用户体验较差。
经研究发现,造成上述问题的原因为:传感器检测设备和胰岛素输注设备为两个独立的单元。或者即使两者集中在一体结构上,也会在体表形成多个穿刺位置。且每日胰岛素总量的算法不够完善,计算方式单一。
为了解决该问题,本发明提供了一种集成型闭环人工胰腺,输注管本身作为输注通道并设置有检测电极,一次一个位置穿刺即可实现检测和输注的目的。同时,该人工胰腺能够准确计算每日胰岛素总量(TDD)的数值和当前胰岛素输注量,增强用户体验。
现在将参照附图来详细描述本发明的各种示例性实施例。应理解,除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不应被理解为对本发明范围的限制。
此外,应当理解,为了便于描述,附图中所示出的各个部件的尺寸并不必然按照实际的比例关系绘制,例如某些单元的厚度、宽度、长度或距离可以相对于其他结构有所放大。
以下对示例性实施例的描述仅仅是说明性的,在任何意义上都不作为对本发明及其应用或使用的任何限制。这里对于相关领域普通技术人员已知的技术、方法和装置可能不作详细讨论,但在适用这些技术、方法和装置情况下,这些技术、方法和装置应当被视为本说明书的一部分。
应注意,相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义或说明,则在随后的附图说明中将不需要对其进行进一步讨论。
图1为本发明实施例集成型闭环人工胰腺模块关系示意图。
本发明实施例公开的集成型闭环人工胰腺主要包括检测模块100、程序模块101与输注模块102。
检测模块100用于连续检测用户实时血糖水平参数。一般的,检测模块100为连续葡萄糖检测仪(Continuous Glucose Monitoring,CGM),可以实时检测血糖值,并监控血糖变化,将实时血糖数据发送至程序模块101。
程序模块101用于控制检测模块100与输注模块102的工作。因此,程序模块101分别与检测模块100和输注模块102相连接(在这里,相连接包括常规的电连接或者无线连接)。
输注模块102包含输注胰岛素所必备的机械结构,且受程序模块101控制,下文将详细叙述。根据程序模块101发出的当前胰岛素输注量数据,输注模块102向用户体内输注当前所需的胰岛素。同时,输注模块102的输注状态也能够实时反馈到程序模块101中。
本发明的实施例并不限制检测模块100、程序模块101与输注模块102具体的位置以及连接关系,只要能够满足前述的功能条件即可。
在本发明实施例中,三者互相电连接而组成一个整体结构。因此,三者粘贴在用户皮肤的同一个位置,下文将详细叙述。三个模块连接成一个整体并粘贴在同一位置,用户皮肤粘贴设备的数量将减少,进而减弱因粘贴较多设备对用户活动伸展的干扰;同时,也有效解决了分离设备之间无线通信不畅的问题,进一步增强用户体验。
在这里,需要说明的是,本发明实施例的程序模块101还可以包括多个子模块。根据子模块的功能,不同的子模块可分别设置于人工胰腺内部的不同部位,在这里并不作具体限制,只要能够满足程序模块101的控制条件即可。
在本发明的实施例中,程序模块101还用于获取包括用户每天输注的胰岛素量数据。一般的,对于人工胰腺,用户当前所需的胰岛素量与历史每天输注的胰岛素量密切关联。具体的,在本发明实施例中,用户每天输注的胰岛素量数据包括每天输注的胰岛素总量(d)数据,或者不同时间段输注的胰岛素大剂量和基础量数据,或者临时基础量和矫正大剂量数据,或者在特定事件发生后,输注模块102的输注量数据。
程序模块101包括手动输入界面(未示出)或者自动检测子模块(未示出)。用户通过单独使用手动输入界面,或者单独使用自动检测子模块,或者将两者结合使用,程序模块101可获取用户的身体状况数据。单独使用手动输入界面或者使用自动检测子模块,或者两者结合使用,增强用户使用设备的灵活性。
如在本发明的一个实施例中,根据医生的指导并借助于手动输入界面,用户可将此前每天输注的胰岛素量数据手动输入至程序模块101。在本发明的另一个实施例中,程序模块101已经存储记录用户此前胰岛素的输注数据。通过自动检测子模块,程序模块101能够自动获取并计算用户每天输注的胰岛素量数据。优选的,在本发明实施例中,用户将手动输入界面和自动检测子模块结合使用。此时,自动检测的数据与手动输入数据可以被结合对比,使程序模块101实时调整算法,以获得更准确的计算结果。
在本发明的其他实施例中,通过手动输入界面,用户还可以输入其他信息,如将进餐信息、运动锻炼信息、睡眠信息、身体状况信息手动输入至程序模块101,在这里并不做具体限制。
一般的,使用人工胰腺的目的在于稳定血糖水平,即需要向用户体内输注合适量的胰岛素。而当前胰岛素输注量与每日胰岛素总量(Total Daily Dose,TDD)密切关联,TDD为当前胰岛素输注量的重要影响因素。因此,程序模块101被导入每日胰岛素总量TDD算法和当前胰岛素输注量算法,分别用于计算TDD和当前胰岛素输注量。
当前胰岛素输注量算法用于计算当前身体所需的胰岛素量。在本发明的实施例中,当前胰岛素输注量的影响因素也有很多,如身体活动状况、TDD等均为其变量因子。具体的,在本发明实施例中,TDD为当前胰岛素输注量算法的一个变量因子。因此,TDD越准确,或者人工胰腺能够越准确感知用户的身体活动状况,当前胰岛素输注量也会越准确。而TDD可由每日胰岛素总量TDD算法通过对每天输注的胰岛素总量(d)计算得到。同时,程序模块101单独或者结合使用检测数据、用户每天输注的胰岛素量数据和每日胰岛素总量数据以计算当前胰岛素输注量。
影响TDD的因素较多,且大部分与用户身体状况有关。因此,在本发明实施例中,每日胰岛素总量(TDD)算法的变量因子包括用户的身体活动状况、生理状况、心理状况、进食状况中的一种或多种。
在这里,用户的生理状况包括体重、性别、年龄、疾病情况、生理期等中的一种或多种。
用户的心理状况包括愤怒、恐惧、低落、高亢、激动等情绪状况。
用户的身体活动状况包括普通身体伸展、运动锻炼或者睡眠。人工胰腺可将普通活动、运动和睡眠区别开,使得人工胰腺更精细化地控制血糖水平。
TDD是每日胰岛素总量算法通过计算前两天或者前更多天每天输注的胰岛素总量(d)数据而得到。具体的,在本发明实施例中,TDD是每日胰岛素总量算法通过计算前7天的每天输注的胰岛素总量(d)数据而得到。优选的,TDD为用户每天输注的胰岛素总量(d)数据的平均值。
在本发明的一个实施例中,如果d7、d6、...、d2、d1分别表示用户在前第7天、前第6天、...、前天和昨天的每天输注的胰岛素总量(d)数据,则:
TDD=(d7+d6+...+d2+d1)/7
即,TDD为用户每天输注的胰岛素总量(d)的算数平均值。
由于越接近当前时间,每天输注的胰岛素总量(d)的数据越接近实际TDD。因此,在本发明的另一个实施例中,TDD算法还赋予dn不同的权重γn,如对应权重为γ7、γ6、...、γ2、γ1,则:
TDD=γ7d76d6+...+γ2d21d1
即,TDD为每天输注的胰岛素总量(d)的加权平均值。
需要说明的是,本发明实施例并不限制dn数据的统计方法。在本发明的再一个实施例中,可以采用前7天每天输注的胰岛素总量(d)中位数的方法确定TDD数值。在本发明的又一个实施例中,还可以先剔除dn的最大值和最小值,再进行平均化处理。本发明的又一个实施例引入了方差或者标准差,舍弃误差较大的点,再进行平均化处理。本发明的其他实施例还可以采用加权平均结合滑动数据框的方法,使得TDD的计算结果更准确。
在这里,需要说明的是,滑动数据框是指选择如连续5天的数据作为一个数据框进行数据统计,并根据时间的推移,数据框整体向后推移若干天,但仍然保持包括连续5天的数据。滑动数据框的具体统计方法请参考前文所述,在此不再赘述。
如前所述,身体活动状况会影响TDD与当前胰岛素输注量。因此,集成型闭环人工胰腺还包括运动传感器(未示出)。运动传感器用于自动检测用户的身体活动,程序模块101可接收身体活动状况信息。运动传感器能够自动且准确地感应用户的身体活动状态,并将活动状态参数发送至程序模块101,使得每日胰岛素总量或当前胰岛素输注量的计算结果更准确,增强用户体验。同时,运动传感器设置于人工胰腺的模块中能够尽可能提高人工胰腺的集成度,减小设备的体积,增强用户体验。
运动传感器设置于检测模块100、程序模块101或者输注模块102中。优选的,在本发明实施例中,运动传感器设置于程序模块101中。
需要说明的是,本发明实施例并不限制运动传感器的数量、以及多个运动传感器的设置位置,只要能够满足运动传感器感知用户活动状况的条件即可。
运动传感器包括三轴加速度传感器或者陀螺仪。三轴加速度传感器或者陀螺仪能够更准确感应到身体的活动强度、活动方式或者身体姿态,最终使输注量的计算结果更准确。优选的,在本发明实施例中,运动传感器为三轴加速度传感器和陀螺仪的结合。
图2为本发明实施例人工胰腺的剖面图,人工胰腺为一体结构。
在本发明实施例中,人工胰腺内部包括输入端121和输出端122。输入端121用于接收血糖参数信号,输出端122用于传输来自程序模块101的输注指令至输注模块。因此,输入端121、输出端122分别与检测模块100、程序模块101相连接。输入端121包括电连接区121a和121b。在工作状态下,电连接区与电极或电极导线电连接,以接收参数信号。在本发明的其他实施例中,根据电极数量,输入端121还可以包括更多个电连接区。
在本发明实施例人工胰腺的使用过程中,输注管130和输入端121会发生相对滑动,因此,输入端121设置为弹性件。选用弹性件保证输注管130和输入端121之间过盈配合,以避免电接触不良。弹性件包括:导电胶条、定向导电的导电硅胶、导电环、导电球等。当电极数量比较多时,电连接区相对密集,此时可根据不同的结构设计,弹性件可以选择上述中的一种或者多种组合。在这里,输注管130包括输注软管或者输注钢针。或者输注管130由输注软管与输注钢针互相连接而组成。
在本发明实施例中,当输注管130被安装至工作位置时,安装装置150进入人工胰腺内,其顶部与人工胰腺壳体成为一体结构,如图2所示。
在本发明的其他实施例中,输注管130上还包括有与输入端121相连接的电接触区140。如图2所示,输注管130的一端刺入皮下(图2中输注管实线部分示意),另一端(图2中输注管虚线部分示意)与输注模块102出口相连通,进而建立了胰岛素从输注模块102到人体组织液的流通通道。同时,电接触区140与输入端121的电连接区互相接触,实现检测模块100和电接触区140之间的电连接。
在本发明实施例中,还包括用于将人工胰腺贴在皮肤表面的医用胶布160,以将程序模块101、输注模块102、检测模块100和输注管130作为一个整体粘贴在皮肤上。
图3a-图3b为输注管130包括两个电极的局部纵向剖面图。
在本发明的实施例中,人工胰腺包括至少两个检测分析物参数的电极,且电极设置于输注管130管壁,如图3a所示。不同电极在虚线框140位置与电连接区电连接。输注管130的管腔131用于输注胰岛素。
在本发明实施例中,电极设置于输注管130管壁外表面,如电极171和电极172。一般的,电极171和电极172之间互相绝缘。电极171和电极172分别直接与输入端的电连接区121a和121b电连接,将血糖参数信息以电信号形式传入检测模块100,如图3b所示。这种设计减少了人工胰腺穿刺皮肤的位置,一次在同一个位置穿刺,即可完成分析物检测和胰岛素输注,降低了用户感染的风险。
需要说明的是,在本发明实施例中,电极171和电极172的一部分位于皮下组织液中,一部分位于体外,实现电信号直接在电极上传输。下文其它实施例中类似的电极设置具备同样的功能,后续不再详述。
在本发明实施例中,人工胰腺只有两个电极,电极171为工作电极,电极172为辅助电极。在本发明的另一个实施例中,电极171为辅助电极,电极172为工作电极。辅助电极为对电极。
在本发明的其他实施例中,输注管130表面还可以设置更多个电极,多个电极互相电绝缘。
图4a-图4c为本发明另一个实施例的输注管130的局部纵向剖面图。
需要说明的是,本发明所有实施例中的电极或者电极导线均涂覆或镀在输注管130上,但为了便于标记和叙述,电极导线或电极与输注管将在图中分离示出,下文的相关结构图示与此处的方式相同,后续不再赘述。
在本发明实施例中,输注管130管壁132的外表面设置有电极271和272。其中,电极271直接和电连接区121a电连接,类似图3a中的电极171。电极272设置于输注管130的前端部,电极272通过电极导线2720与电连接区121b电连接。电极272位于输注管130皮下部分管壁外表面,而电极271的一部分位于组织液中,另一部分位于体外。此时,电极272与电连接区121b间接电连接,并将参数信息发送至检测模块100。
本发明实施例对电极272的形状不做具体限制。如电极272可以为环形,电极272环绕在输注管130前端部,如图4b所示。此时,电极272与电极271之间设置有绝缘层。如图4c所示,在本发明的又一个实施例中,电极271和电极272均设置于输注管130的前端部,即设置于皮下部分的管壁外表面。管壁132的外表面还设置有分别与电极271和电极272电连接的电极导线2710和电极导线2720。输入端的电连接区121a、121b分别与电极导线2710、电极导线2720电连接。因此,电极271、电极272与输入端为间接电连接,同样可以将体液参数信号传入检测模块100。检测时,电极271、电极272均位于皮下组织液。
图4c中的电极272设置为环形,且环绕在部分管壁132的外表面。电极271、电极272还可以有其它形状,这里不做具体限制。
图5为本发明又一个实施例设置三个电极的输注管130的局部纵向剖面图。
在本发明实施例中,输注管130上设置三个电极:电极371、电极372和电极373。电极371、电极372和电极373分别设置在管壁132的外表面。同样的,管壁132的表面还设置有分别与电极372、电极373电连接的电极导线3720、3730。同样的,管壁132外表面也设置有与电极371电连接的电极导线,但为了简化标记而未示出。电极371的电极导线、电极导线3720和电极导线3730分别与输入端电连接区121a、121b、121c电连接,进而实现输入端与各个电极电连接。三个电极的形状可以有多种,这里不作具体限制。
在本发明实施例中,为了简化电连接区的设计,输入端的弹性件为导电硅胶或者导电环。在硅胶中掺杂不同的元素,可以实现其定向导电,如水平方向导电,竖直方向不导电。这样设计,即使121a和121c接触相邻,两者之间也是相互绝缘。而电连接区121b可以使用导电胶条或者导电球等,这里不做具体限制。
在本发明实施例中,电极371为工作电极,电极372和电极373均为辅助电极。此时,电极371与电极372或与电极373可组成不同电极组合,即两个电极组合共用一个电极,如共用电极371。检测模块100可选择不同的电极组合检测血糖参数信息。形成电极组合后,一方面,当一个工作的电极组合出现故障,检测模块100可以根据情况选择其他电极组合进行检测,确保体液信号的检测过程不间断。另一方面,检测模块100可以选择多个电极组合同时工作,将同一时刻同一参数的多组数据进行统计分析,提高分析物参数的准确性,使程序模块101输出更准确的胰岛素输注信号。
在本发明的另一个实施例中,电极371、电极372和电极373中包括一个辅助电极和两个工作电极,同样可根据实际需求进行任意选定,在这里并不做具体限制。
在本发明的一个实施例中,电极371为工作电极,电极372、373均为辅助电极,且辅助电极372、373分别作为对电极、参比电极使用,进而组成三电极体系。同样的,根据实际需求,三个电极可以任意选定,在这里并不做具体限制。
本发明的其它实施例还可以设置更多个电极。电极中包括多个工作电极和多个辅助电极。此时,每个电极组合包括工作电极和辅助电极,因此,多个电极可以组成多个电极组合。根据需求,检测模块100可以选择一个或多个电极组合对血糖参数进行检测。
图6为本发明又一个实施例的输注管130包括内层管170和外层管180的局部纵向剖面图。
在本发明实施例中,输注管130包括内层管170和套在内层管170外壁的外层管180。设置多层管壁,输注管130的强度增加,便于穿刺。另外,外层管180的管壁材料可根据需要进行选择,如其管壁只能允许特定分析物透过,减弱其它物质的干扰,提高分析物参数的检测准确性。
内层管170的管腔131作为胰岛素输注通道,输注管130管壁包括内层管管壁和外层管管壁。电极472设置于内层管170管壁外侧。电极471设置于外层管180管壁的外表面。此时,电极472设置于输注管130的管壁中,即电极472嵌入外层管180和内层管170之间。
在本发明实施例中,电极472可以被外层管180部分覆盖(如图6所示),或者被外层管180全部覆盖。电极472通过电极导线4720与电连接区121b电连接。电极471通过电极导线4710与电连接区121a电连接。当电极472被外层管180部分覆盖或者全部覆盖时,外层管180管壁材料为渗透膜或者半渗透膜。这样的选择能够便于血糖透过外层管180管壁,被电极检测到,进而在不影响检测的情况下,提高电极位置设计的灵活性。
在本发明的另一个实施例中,电极471和电极472均设置于输注管130的管壁中,即电极471和电极472均嵌入内层管170和外层管180之间,且被外层管180完全覆盖。此时,外层管180的材料如上文所述,分析物均可透过外层管180被电极检测到。
需要说明的是,在本发明的其他实施例中,内层管170外侧还可以设置更多层外层管。且如上文所述,输注管130上可以设置更多个电极。根据实际需要,不同的电极可以设置于不同的外层管之间。且至少一个电极设置于内层管管壁与最外层的所述外层管管壁之间。
除了将电极嵌入输注管130管壁内,本发明的一些实施例还可以减小图6中外层管180的长度,从而将设置于内层管170外表面的电极472直接裸露在组织液中。此时,外层管180前端和内层管170前端进入组织液的距离不同。
综上所述,本发明公开了一种集成型闭环人工胰腺,输注管本身作为输注通道并设置有检测电极,一次一个位置穿刺即可实现检测和输注的目的。同时,该人工胰腺能够准确计算每日胰岛素总量(TDD)的数值和当前胰岛素输注量,增强用户体验。
虽然已经通过示例对本发明的一些特定实施例进行了详细说明,但是本领域的技术人员应该理解,以上示例仅是为了进行说明,而不是为了限制本发明的范围。本领域的技术人员应该理解,可在不脱离本发明的范围和精神的情况下,对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (18)

1.一种集成型闭环人工胰腺,其特征在于,包括:
检测模块,所述检测模块用于连续检测实时血糖水平参数,所述检测模块包括至少两个电极;
与所述检测模块相连接的程序模块,所述程序模块用于获取包括用户每天输注的胰岛素量数据,所述程序模块还被导入每日胰岛素总量算法和当前胰岛素输注量算法,其中,根据用户每天输注的胰岛素量数据,所述每日胰岛素总量算法用于计算每日胰岛素总量;根据所述实时血糖水平参数、用户每天输注的胰岛素量数据或者所述每日胰岛素总量,所述当前胰岛素输注量算法用于计算当前胰岛素输注量,所述每日胰岛素总量为所述当前胰岛素输注量算法的一个变量因子;和
输注模块,所述输注模块与所述程序模块相连接,所述输注模块包括作为胰岛素输注通道的输注管,所述电极设置于所述输注管的管壁,根据所述当前胰岛素输注量,所述程序模块控制所述输注模块输注胰岛素;
输入端,所述输入端与所述检测模块和所述程序模块相连接,用于接收参数信号,所述输入端能够与所述输注管相对滑动,所述输入端为弹性件且与所述输注管之间过盈连接,所述输入端包括电连接区,所述输注管包括电接触区,在工作状态下所述电连接区和所述电接触区相接触;
输出端,所述输出端与所述检测模块和所述程序模块相连接,用于传输来自所述程序模块的输注指令至所述输注模块。
2.根据权利要求1所述的集成型闭环人工胰腺,其特征在于,所述电极设置于所述输注管管壁外表面或者设置于所述输注管管壁中。
3.根据权利要求2所述的集成型闭环人工胰腺,其特征在于,所述电极设置于所述输注管皮下部分管壁外表面,所述输注管管壁外表面还设置有与所述电极电连接的电极导线。
4.根据权利要求2所述的集成型闭环人工胰腺,其特征在于,所述输注管包括内层管和至少一层外层管,所述外层管设置于所述内层管的外部,所述内层管用于输注胰岛素。
5.根据权利要求4所述的集成型闭环人工胰腺,其特征在于,至少一个所述电极设置于所述内层管管壁与最外层的所述外层管管壁之间。
6.根据权利要求5所述的集成型闭环人工胰腺,其特征在于,设置于所述内层管管壁外表面的所述电极完全裸露在皮下组织液中,或者被所述外层管全部或部分覆盖。
7.根据权利要求6所述的集成型闭环人工胰腺,其特征在于,当位于所述内层管管壁外表面的所述电极被所述外层管全部或者部分覆盖时,所述外层管的管壁材料为渗透膜或者半渗透膜。
8.根据权利要求1所述的集成型闭环人工胰腺,其特征在于,所述电极包括工作电极和辅助电极,所述工作电极和所述辅助电极的数量分别为一个或多于一个。
9.根据权利要求8所述的集成型闭环人工胰腺,其特征在于,多个所述电极组成一个或多个电极组合,每个电极组合包括所述工作电极与所述辅助电极,所述检测模块使用一个或多个所述电极组合检测血糖参数。
10.根据权利要求1所述的集成型闭环人工胰腺,其特征在于,所述程序模块包括手动输入界面或者自动检测子模块,所述程序模块获取用户每天输注的胰岛素量数据的方法包括:
通过所述手动输入界面,用户将每天输注的胰岛素量数据手动输入至所述程序模块;或者
所述自动检测子模块自动检测,存储并计算用户每天输注的胰岛素量数据。
11.根据权利要求10所述的集成型闭环人工胰腺,其特征在于,用户每天输注的胰岛素量数据包括每天输注的胰岛素总量数据,或者不同时间段所输注的大剂量和基础量数据,或者临时基础量和矫正大剂量数据,或者在不同事件发生后,所述输注模块的输注数据。
12.根据权利要求11所述的集成型闭环人工胰腺,其特征在于,所述每日胰岛素总量为所述每日胰岛素总量算法通过计算前两天或者前更多天每天输注的胰岛素总量数据而得到,所述每日胰岛素总量为每天输注的胰岛素总量数据的平均值或者中位数。
13.根据权利要求11所述的集成型闭环人工胰腺,其特征在于,所述每日胰岛素总量算法的变量因子包括身体活动状况、生理状况、心理状况、进食状况中的一种或多种。
14.根据权利要求13所述的集成型闭环人工胰腺,其特征在于,所述生理状况包括体重、性别、年龄、疾病、生理期中的一种或多种。
15.根据权利要求13所述的集成型闭环人工胰腺,其特征在于,所述身体活动状况包括普通身体伸展、运动锻炼或者睡眠,且所述身体活动状况为所述当前胰岛素输注量算法的一个变量因子。
16.根据权利要求1所述的集成型闭环人工胰腺,其特征在于,还包括用于自动检测用户的身体活动运动传感器,所述运动传感器设置于所述检测模块、所述程序模块或者所述输注模块中。
17.根据权利要求16所述的集成型闭环人工胰腺,其特征在于,所述运动传感器包括三轴加速度传感器或者陀螺仪。
18.根据权利要求1所述的集成型闭环人工胰腺,其特征在于,所述检测模块、所述程序模块和所述输注模块相连接组成一个整体结构,并粘贴在皮肤的同一位置。
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