WO2012065309A1 - 可显示渗出液体积与粘稠度关系图的负压伤口治疗系统 - Google Patents

可显示渗出液体积与粘稠度关系图的负压伤口治疗系统 Download PDF

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Publication number
WO2012065309A1
WO2012065309A1 PCT/CN2010/078910 CN2010078910W WO2012065309A1 WO 2012065309 A1 WO2012065309 A1 WO 2012065309A1 CN 2010078910 W CN2010078910 W CN 2010078910W WO 2012065309 A1 WO2012065309 A1 WO 2012065309A1
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Prior art keywords
viscosity
exudate
volume
wound
negative pressure
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PCT/CN2010/078910
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English (en)
French (fr)
Inventor
隗刚
郑灿阳
菅冀祁
Original Assignee
惠州市华阳多媒体电子有限公司
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Application filed by 惠州市华阳多媒体电子有限公司 filed Critical 惠州市华阳多媒体电子有限公司
Priority to PCT/CN2010/078910 priority Critical patent/WO2012065309A1/zh
Publication of WO2012065309A1 publication Critical patent/WO2012065309A1/zh

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Classifications

    • A61F13/05
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/98Containers specifically adapted for negative pressure wound therapy
    • A61M1/982Containers specifically adapted for negative pressure wound therapy with means for detecting level of collected exudate
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284Electromagnetic waves
    • G01F23/292Light, e.g. infrared or ultraviolet
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296Acoustic waves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00Drainage appliance for wounds or the like, i.e. wound drains, implanted drains

Definitions

  • Negative pressure wound treatment system capable of showing the relationship between exudate volume and viscosity
  • the invention relates to the technical field of negative pressure wound treatment equipment, in particular to a negative pressure wound treatment system capable of displaying a relationship between volume and viscosity of exudate. Background technique
  • Negative pressure wound therapy equipment called “Native” in the United States, is called NPWT. Its principle is to promote wound healing by applying negative pressure to the wound. According to the clinical results of the United States in the past 10 years, the device has a good healing effect on various acute and chronic wound treatments.
  • a negative pressure wound treatment system includes a negative pressure wound treatment device, a wound site kit, and a container for collecting exudate at the wound (herein referred to as a collection bottle).
  • the wound part is used to close the wound and create a negative pressure space.
  • Negative pressure wound therapy equipment is used to create the required negative pressure for the wound, consisting of a negative pressure source and a controller. Referring to Figure 1, a common negative pressure wound treatment system is shown.
  • a negative pressure wound treatment device 8 Within the dashed box is a negative pressure wound treatment device 8; reference numeral 1 is the skin tissue surrounding the human wound; the filler 2 at the wound covers the wound of the human body; a wound closure 3 is placed above the filler 2 at the wound to close the wound
  • the wound filler 2 is connected to the liquid collecting bottle 5 through the connecting tube 4, thereby guiding the exudate from the wound into the liquid collecting bottle 5, and collecting the exudate from the wound through the collecting bottle 5, and collecting the liquid collecting bottle
  • the other end of 5 is connected to the negative pressure source 6, and the negative pressure source 6 provides a negative pressure to supply the wound exudate to the liquid collecting bottle 5; the negative pressure source 6 is connected to a controller 7, which is negatively controlled by the controller 7.
  • the pressure source 6 achieves control.
  • Wound exudate is a body fluid that accumulates in the wound and has many physiological causes for its formation.
  • exudate management is one of the important topics in modern wound care research.
  • Modern wound care for the study of exudate mainly focused on two aspects, one aspect of the research involves the volume-time relationship of exudate, the color of the exudate, the transparency, and the viscosity of the exudate and other key physical parameters; Another aspect relates to various physiological and chemical parameters such as the composition and function of the exudate.
  • the negative pressure wound treatment system of the present invention which can display the relationship between the volume and the viscosity of the exudate includes:
  • Liquid collection bottle collecting wound exudate
  • the negative pressure wound treatment device is composed of a negative pressure source and a controller, and provides a negative pressure for the liquid collection bottle; a wound kit, which fills and closes the wound, and communicates with the liquid collection bottle through a connecting tube;
  • a wound exudate management device for detecting the volume and viscosity of the wound exudate in the liquid collecting bottle; and an arithmetic unit, generating a correspondence diagram of a volume and a viscosity according to the volume and viscosity data obtained by the detection;
  • the operation unit further matches the detected volume data with a preset alarm value, and sends an alarm signal when the matching is successful; and further includes an alarm device, and alarms according to the alarm signal.
  • the operation unit further matches the detected viscosity data with a preset alarm value, and sends an alarm signal when the matching is successful; and further includes an alarm device, and alarms according to the alarm signal.
  • the operation unit further matches the detected viscosity data and volume data with respective preset alarm values, and if any matching is successful, sends an alarm signal; and further includes an alarm device, according to the alarm signal Call the police.
  • the wound exudate management device comprises a wound exudate volume detecting device, comprising:
  • a transmitting unit that emits an electromagnetic wave or an acoustic wave signal to the liquid collecting bottle
  • the receiving unit receives the electromagnetic wave or sound wave signal reflected or refracted by the liquid collecting bottle; and the volume detecting control unit determines whether there is a wound exudate at the position of the exudate volume detecting device according to whether the receiving unit receives the electromagnetic wave or the acoustic wave signal.
  • the wound exudate volume detecting device is disposed on a transmission mechanism, and the transmission mechanism is coupled to a driving mechanism, and the wound exudate volume detecting device is in the transmission mechanism under the action of the driving mechanism and the transmission mechanism
  • the upper liquid collecting bottle moves vertically.
  • the operation unit further calculates a flow rate of the wound exudate according to a volume change of the wound exudate per unit time, and matches the flow rate with a predetermined flow rate level to obtain a level corresponding to the flow rate, and the display The interface also displays flow data and grades of wound exudate.
  • the wound exudate management device comprises a wound exudate viscosity detecting device for detecting the viscosity of the wound exudate, and the wound exudate viscosity detecting device comprises:
  • the viscosity detection control unit calculates the viscosity of the wound exudate based on the received viscosity signal.
  • the arithmetic unit matches the budgeted wound exudate consistency to a predetermined viscosity level to obtain a grade corresponding to the viscosity.
  • the arithmetic unit also calculates an average value of the viscosity of the wound exudate per unit time.
  • the corresponding relationship between the wound exudate volume and the viscosity is a matrix diagram
  • the transverse or longitudinal direction indicates the viscosity of the wound exudate
  • the longitudinal or lateral direction indicates the volume of the wound exudate
  • the display interface further displays an alarm signal.
  • the alarm device emits light and/or sound upon an alarm.
  • the display interface is an LED interface or an LCD interface.
  • the negative pressure wound treatment system of the present invention for detecting the volume and viscosity of exudate and showing the relationship thereof, for setting the wound exudate management device for detecting the volume and viscosity of the exudate in the liquid collection bottle
  • a volume and viscosity are generated by a computing unit to generate a corresponding relationship diagram
  • the display interface displays a corresponding relationship between the volume and the viscosity of the wound exudate. Therefore, the medical staff can directly view the display interface, thereby obtaining the wound.
  • volume and viscosity of the detected wound exudate are respectively matched with a predetermined grade, the volume and the viscosity are graded, and the grades are divided into a relationship matrix, and the medical staff can More intuitively by looking at the relationship matrix of exudate volume and viscosity Figure, to understand the treatment of the wound, for the phenomenon of wound deterioration, convenient for medical staff to deal with.
  • FIG. 1 is a schematic structural view of a conventional negative pressure wound treatment system
  • FIG. 2 is a schematic view showing the structure of a preferred embodiment of a negative pressure wound treatment system capable of detecting the volume and viscosity of exudate and showing a relationship between the exudates;
  • Figure 3 is a schematic view of the optical path of part A of Figure 2;
  • Figure 4 is a schematic diagram of the optical path when there is no wound exudate in a certain portion of the liquid collecting bottle in the preferred embodiment
  • Figure 5 is a schematic diagram of the optical path when there is a transparent wound exudate somewhere in the collecting bottle in the preferred embodiment
  • a matrix of the relationship between volume and viscosity displayed by the display interface is shown in the preferred embodiment.
  • the relevant reference numerals are as follows:
  • the wound exudate volume detecting device 9 is sleeved on a screw thread 10 whose center line extends vertically along the liquid collecting bottle, and the center line of the screw rod 10 is parallel to the vertical direction of the liquid collecting bottle 5;
  • the device 9 includes: a transmitting unit 91 that emits electromagnetic waves or ultrasonic signals to the liquid collecting bottle 5, and is disposed at one side of the liquid collecting bottle 5; the receiving unit 92 receives electromagnetic waves or ultrasonic signals refracted by the liquid collecting bottle 5, and the transmitting unit 91 Relatively disposed on the other side of the liquid collecting bottle 5 so as to receive no electromagnetic wave or ultrasonic signal passing through the refraction at the position of the liquid collecting bottle 5; the detecting control unit, according to whether the receiving unit The electromagnetic wave or the ultrasonic signal is received for judgment, and if not, the wound exudate is determined at the position of the wound exudate volume detecting device.
  • the electromagnetic wave used in the wound exudate volume detecting device is infrared rays.
  • visible light, ultraviolet light, laser light or other electromagnetic signals may be used, and ultrasonic waves, infrasound waves or other acoustic signals may be used.
  • the wound exudate volume detecting device 9 is restrained in the circumferential direction of the center line of the screw shaft 10, and can only move in the direction of the center line of the screw shaft 10; one end of the screw rod 10 is connected to the motor 11, and the motor 11 is driven. Next, the screw 10 rotates about its center line, thereby driving the wound exudate volume device 9 to move down the center line of the screw rod 10, and detecting whether the corresponding position of the liquid collection bottle 5 has liquid.
  • the screw rod 10 can also be replaced by any other transmission mechanism such as: gear set, belt, and leather wheel; as long as the wound exudate volume detecting device 9 can be moved in the vertical direction with respect to the liquid collecting bottle 5, The purpose of detecting the amount of liquid in the corresponding position of the liquid collection bottle 5 can be achieved.
  • the wound exudate volume detecting device 9 in this embodiment drives the wound exudate volume detecting device 9 up and down by the screw 10 when the motor 11 is in operation.
  • the exudate volume detecting device 9 determines that the position at this time corresponds to the liquid level, and then determines the liquid of the liquid collecting bottle 5 according to the stroke of the motor.
  • the surface height is calculated to calculate the amount of wound exudate in the liquid collection bottle 5.
  • the transmitting unit 91 emits infrared rays S1, which are oscillated through the side wall 51 of the liquid collecting bottle 5 into the inner region 52 of the liquid collecting bottle 5, and then from the other side of the side wall 51 of the liquid collecting bottle 5.
  • the receiving unit 92 receives the infrared ray IR that is refracted, and another portion of the infrared ray is reflected into the reflected light S2.
  • FIG. 4 is a schematic diagram of the optical path when there is no wound exudate at the corresponding position in the liquid collecting bottle, and the infrared light path when there is no exudate at the liquid collecting bottle 5 between the transmitting unit 91 and the receiving unit 92 is shown below.
  • ⁇ , ⁇ , ⁇ , ⁇ be infrared rays incident on the outer surface of the outer casing of the liquid collecting bottle 5, into the outer casing of the liquid collecting bottle 5, and onto the inner surface of the outer casing of the liquid collecting bottle 5, and when injected into the inner cavity of the liquid collecting bottle 5, infrared rays and The angle between the normals.
  • be the angle formed by the point where the infrared rays are incident on the outer surface of the casing 5 and the line connecting the points from the inner surface to the center line of the section of the liquid collection bottle 5.
  • Set the liquid bottle 5 with a radius of R and a wall thickness of h.
  • liquid bottle 5 have a refractive index of nl and a refractive index of about 1 in air.
  • the angle ⁇ between the infrared ray S11 incident on the outer surface of the outer casing of the liquid collecting bottle 5 and the infrared ray S13 emitted from the inner surface is mainly caused by the incident point of the infrared ray on the outer surface of the outer casing of the liquid collecting bottle 5 and the emission from the inner surface.
  • the deflection determination of the arc normal at two points can be approximated:
  • the angle between the infrared ray S12 incident on the inner surface of the liquid collection bottle 5 and the infrared ray S13 on the outer surface of the outer casing of the liquid collection bottle 5 is also ⁇ .
  • the infrared ray S11 incident on the outer surface of the outer casing of the liquid collecting bottle 5 is substantially parallel to the infrared ray S13 on the outer surface of the outer casing of the liquid collecting bottle 5.
  • the receiving unit 92 and the transmitting unit 91 are disposed on the same horizontal line, and the receiving unit can receive the refracted infrared rays to judge that there is no oozing liquid.
  • FIG. 5 shows that the corresponding position in the liquid collecting bottle has oozing out.
  • the angle between the incident and outgoing rays can be about 15.8.
  • the receiving unit 92 does not receive infrared light, and therefore, it can be judged that there is wound exudate in the liquid collecting bottle 5.
  • the position of the receiving unit 92 is set so that it receives the emitted light in the absence of wound exudate of the liquid collecting bottle 5, and cannot be received in the case where the liquid collecting bottle 5 has wound exudate. By emitting light, the liquid position in the liquid collection bottle 5 can be judged, and the liquid volume in the liquid collection bottle 5 can be calculated.
  • the controller 7 in this embodiment further includes an arithmetic unit for calculating the flow rate of the wound exudate according to the volume and time of the wound exudate, and the display interface can also selectively display the data of the wound exudate flow.
  • Wound exudate flow rate can be in milliliters per second (mL/s), milliliters per minute (mL/Min), milliliters per hour (mL/H), liters per second (L/S), liters per minute (L/Min) ), expressed in any of l/h (L/H).
  • the receiving unit 92 when there is no liquid at the position where the wound exudate volume detecting device 9 is located in the liquid collecting bottle 5, the receiving unit 92 can receive the electromagnetic wave signal or the acoustic wave signal at the wound exudate volume detecting module 9 When the liquid is in position, the receiving unit 92 cannot receive the electromagnetic wave signal or the acoustic wave signal; further, when the receiving unit 92 does not receive the electromagnetic wave signal or the acoustic wave signal, it is judged that the position of the wound exudate volume detecting device 9 is stagnant. liquid. According to the above description, it is also possible to determine in the opposite manner that the position of the wound exudate volume detecting means 9 is stagnant.
  • the receiving unit 92 can receive the electromagnetic wave signal or the acoustic wave signal in the wound.
  • the receiving unit 92 cannot receive the electromagnetic wave signal or the acoustic wave signal, and according to the receiving unit 92, Whether the electromagnetic wave signal or the acoustic wave signal is received, it is judged that the position of the wound exudate volume detecting device 9 is stagnant with liquid, so as to achieve the purpose of detecting the amount of liquid in the collecting bottle 5.
  • the wound exudate viscosity detecting device 13 detects the viscosity of the wound exudate
  • the wound exudate viscosity detecting device comprises: a sensor, comprising a transmitting unit and a receiving unit, for detecting wound exudation The viscosity signal of the liquid; the wound exudate viscosity detection control unit calculates the viscosity of the wound exudate based on the received viscosity signal. The larger the electromagnetic wave or sound wave signal received by the receiving unit of the sensor, the smaller the viscosity of the wound exudate, so the wound exudate detecting device receives the wound exudate at the position of the liquid collecting bottle.
  • the value of the electromagnetic wave signal received by the unit is the largest, and the maximum value of the electromagnetic wave signal corresponds to the minimum value of the viscosity of the wound exudate 100.
  • the electromagnetic wave signal is the smallest, and the minimum value of the electromagnetic wave signal is related to the wound.
  • the maximum value of the viscosity of the exudate is 100.
  • the viscosity detection control unit further calculates wound exudation based on the received viscosity signal
  • the transport unit calculates the average of the multiple sets of viscosity data per unit time, and matches the average viscosity value with a preset viscosity level to obtain the level corresponding to the viscosity data.
  • the preset viscosity level is: According to the wound exudate viscosity detecting device, the viscosity value is in the range of 0 to 100, and is divided into three levels of high, medium and low, and each level is evaluated. According to its light weight, it is represented by a number. The specific classification is shown in Table 1:
  • the arithmetic unit also calculates the flow rate of the wound exudate according to the volume change of the wound exudate per unit time, and matches the flow rate with a predetermined flow rate level to obtain a level corresponding to the flow rate.
  • the preset flow rate is divided into:
  • the wound exudate volume per unit time is divided into three levels of high, medium and low, and each level is represented by a number according to its light weight. The specific classification is shown in Table 2:
  • the flow rate is judged to be low, and the value 1 is quantified
  • the flow rate is determined to be intermediate, and the value is quantified
  • the flow rate is judged to be high, and the value 1 is quantified.
  • the arithmetic unit in the embodiment generates a correspondence according to the flow data, the flow rate level, the flow level quantized value, the viscosity data, the viscosity level, and the viscosity level.
  • the diagram is a matrix diagram. Referring to FIG. 6, this figure is a corresponding diagram of the volume and viscosity of the wound exudate generated by the graph generation unit and displayed on the display interface 12, which is a matrix diagram. A matrix of the relationship between the volume and viscosity of the wound exudate is used to indicate whether the wound treatment is proceeding properly. The condition of the wound treatment is evaluated by the matrix of the relationship between the volume of exudate and the viscosity of Fig. 6, and some subjective thoughts on the evaluation of exudate can be reduced.
  • a matrix diagram provides a numerical method for producing a volumetric and viscous relationship that is related to the volume and consistency of the exudate. Grades one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one, one
  • the value calculated by the relationship matrix is 2 or 4
  • the green part a is displayed in the relationship matrix, indicating that the wound treatment is normal.
  • the negative pressure wound treatment device is normally used, and the alarm device does not emit an alarm sound or light.
  • the negative pressure wound treatment device issues a warning signal, and the LCD display interface displays Warning message, alarm - LED warning light also displays yellow warning light and sounds an alarm.
  • the red part c is displayed in the relationship matrix diagram, indicating that the wound treatment is abnormal, the wound is seriously infected, and the wound treatment needs to be performed in time.
  • the alarm signal is sent, the LCD interface displays the alarm information, and the alarm - LED alarm light simultaneously displays the red warning light and sounds an alarm.
  • the display interface is an LED display interface.
  • other display interfaces such as an LCD interface, are also available.
  • the negative pressure wound treatment system capable of detecting the volume and viscosity of the wound exudate and showing the relationship thereof, in use, realizes the wound through the matrix diagram of the relationship between the volume and the viscosity of the wound exudate.

Description

可显示渗出液体积与粘稠度关系图的负压伤口治疗系统 技术领域
本发明涉及负压伤口治疗设备技术领域, 尤其涉及一种可显示渗出液 体积与粘稠度关系图的负压伤口治疗系统。 背景技术
负压伤口治疗设备, 美国称为 Negative— Pressure— Wound— Therapy— Devices , 筒称为 NPWT, 其原理为通过对伤口处施加负压, 来促进伤口的愈合。 根 据美国近 10年来的临床表明,该设备对各种急慢性的伤口处理有着良好的 愈合效果。
一般地, 负压伤口治疗系统包括负压伤口治疗设备、 伤口处套件以及 用来收集伤口处渗出液的容器(这里称此容器为集液瓶)。 其中, 伤口处套 件用于封闭伤口, 制造负压空间。 负压伤口治疗设备用于创造出所需要的 伤口负压, 由一个负压源与一个控制器组成。 参见图 1 , 图中所示为一种 常见负压伤口治疗系统。 虚线框内为负压伤口治疗设备 8; 附图标记 1为 人体伤口周围皮肤组织; 伤口处填充物 2将人体伤口处覆盖; 在伤口处填 充物 2的上方设置伤口封闭物 3 ,将伤口封闭,伤口填充物 2通过连接管 4 连接到集液瓶 5上, 从而将来自伤口的渗出液导引至集液瓶 5中, 通过集 液瓶 5收集来自伤口的渗出液, 集液瓶 5的另一端与负压源 6连接, 由负 压源 6提供负压, 为伤口渗出液流至集液瓶 5提供动力; 负压源 6连接一 控制器 7, 由控制器 7对负压源 6实现控制。
伤口渗出液是在伤口处积留的体液, 其形成有着很多生理原因。 在伤 口处理中, 渗出液管理是现代伤口护理研究的重要课题之一。 现代伤口护 理对于渗出液的研究, 主要集中两个方面, 一个方面的研究涉及渗出液体 积 -时间关系, 渗出液颜色、 透明度, 以及渗出液粘稠度等关键的物理参数 上; 另外一个方面是关于渗出液的组成和功能等各种生理化学参数上。 但 在现有技术中, 仍由医护人员定期直接查看渗出液的体积, 并记录渗出液 体积随时间的变化, 直接通过外观查看渗出液的粘稠度, 比较主观, 给医 护人员的研究造成很大不便。 目前, 针对伤口渗出液的各物理参数与对应 的生理意义研究结论如下表:
Figure imgf000004_0001
在抽取伤口周围的渗出液、 分泌物等过程中, 可能会发生感染、 出血, 损伤周围的血管、 淋巴管、 神经等组织的并发症。 因此, 在护理过程中, 必须注意观察渗出液的各种物理参数, 以便能从中发现问题并及时处理。 但在现有技术中, 仍由医护人员定期直接查看渗出液, 而且观测结果也无 法量化, 从而会影响工作效率, 此外, 还会导致在两次查看的间隔里出现 的危险情况不能及时得到处理,而医护人员如果不停地观测渗出液的变化, 会影响其工作效率, 在实践中也不太现实。 发明内容
本发明的目的在于, 提供一种可显示渗出液体积与粘稠度关系图的负 压伤口治疗系统, 能够检测集液瓶内伤口渗出液的体积和粘稠度, 并显示 伤口渗出液的体积和粘稠度的关系图, 为医护人员的观测及研究工作提供 方便。
为解决上述技术问题, 本发明的一种可显示渗出液体积与粘稠度关系 图的负压伤口治疗系统, 包括:
集液瓶, 收集伤口渗出液;
负压伤口治疗设备, 由负压源和控制器组成, 为集液瓶提供负压; 伤口套件, 填充并封闭伤口, 通过连接管与集液瓶连通;
还包括:
伤口渗出液管理装置, 检测集液瓶内伤口渗出液的体积和粘稠度; 运算单元, 根据检测得到的体积和粘稠度数据, 生成一体积和粘稠度 的对应关系图;
显示界面, 显示体积和粘稠度的对应关系图。
优选地, 所述运算单元还将检测得到的体积数据与预设报警值进行匹 配, 匹配成功时发出报警信号; 还包括一报警器, 根据报警信号报警。
优选地, 所述运算单元还将检测得到的粘稠度数据与预设报警值进行 匹配, 匹配成功时发出报警信号; 还包括一报警器, 根据报警信号报警。
优选地, 所述运算单元还将检测得到的粘稠度数据、 体积数据分别与 各自的预设报警值进行匹配, 如任一匹配成功, 则发出报警信号; 还包括 一报警器, 根据报警信号报警。
优选地, 所述伤口渗出液管理装置包括伤口渗出液体积检测装置, 包 括:
发射单元, 向集液瓶发射电磁波或声波信号;
接收单元, 接收经过集液瓶反射或折射的电磁波或声波信号; 体积检测控制单元, 根据接收单元是否接收到电磁波或声波信号判断 渗出液体积检测装置所在位置处是否有伤口渗出液。
优选地, 所述伤口渗出液体积检测装置设置在一传动机构上, 所述传 动机构连接一驱动机构, 在驱动机构及传动机构的作用下, 所述伤口渗出 液体积检测装置在传动机构上沿集液瓶竖向移动。 优选地, 所述运算单元还根据单位时间内伤口渗出液的体积变化运算 出伤口渗出液的流量, 并将流量与预定的流量等级进行匹配, 得出该流量 对应的等级, 所述显示界面还显示伤口渗出液的流量数据及等级。
优选地, 所述伤口渗出液管理装置包括伤口渗出液粘稠度检测装置, 检测伤口渗出液的粘稠度, 所述伤口渗出液粘稠度检测装置包括:
传感器, 用于检测伤口渗出液的粘稠度信号;
粘稠度检测控制单元, 根据接收到的粘稠度信号运算出伤口渗出液的 粘稠度。
优选地, 所述运算单元将预算出的伤口渗出液粘稠度与预先设定的粘 稠度等级进行匹配, 得出该粘稠度对应的等级。
优选地, 所述运算单元还运算出单位时间内伤口渗出液粘稠度的平均 值。
优选地, 所述伤口渗出液体积与粘稠度的对应关系图为矩阵图, 横向 或纵向表示伤口渗出液的粘稠度大小, 纵向或横向表示伤口渗出液的体积 大小。
优选地, 所述显示界面还显示报警信号。
优选地, 所述报警装置在报警时发出光和 /或声音。
优选地, 所述显示界面为 LED界面或 LCD界面。
本发明的可检测渗出液体积与粘稠度并显示其关系图的负压伤口治疗 系统, 由于设置伤口渗出液管理装置, 用于检测集液瓶内渗出液的体积及 粘稠度, 然后通过一运算单元将体积及粘稠度生成一对应关系图, 而后显 示界面显示伤口渗出液的体积和粘稠度的对应关系图, 因此, 医护人员可 以直接观看显示界面, 从而获知伤口渗出液体积和粘稠度的对应关系图, 便于进一步研究;
进一步地, 将检测到的伤口渗出液的体积和粘稠度, 分别与预定的等 级进行匹配, 将体积和粘稠度都进行分级, 将其分成的等级形成一关系矩 阵图, 医护人员可以更加直观地通过查看渗出液体积和粘稠度的关系矩阵 图, 了解伤口的治疗情况, 对于伤口恶化的现象, 方便医护人员及时处理。 附图说明
图 1是现有负压伤口治疗系统的结构示意图;
图 2是本发明可检测渗出液体积与粘稠度并显示之间关系图的负压伤 口治疗系统一优选实施例的结构示意图;
图 3是图 2中 A部分的光路示意图;
图 4是优选实施例中集液瓶某处无伤口渗出液时的光路原理图; 图 5是优选实施例中集液瓶某处有透明伤口渗出液时的光路原理图; 图 6是优选实施例中显示界面显示的体积和粘稠度的关系矩阵图。 图中, 有关附图标记如下:
1 伤口, 2 伤口填充物, 3 伤口封闭物, 4一连接管, 5—集液瓶, 51 集液瓶侧壁, 52—集液瓶内部区域, 6—负压源, 7—控制器, 8—负压 伤口治疗设备, 9 伤口渗出液体积检测装置, 91一发射单元, 92^妻收单 元, 10 丝杆, 11 电机, 12—显示界面; 13—伤口渗出液粘稠度检测装 置, 14一报警器。 具体实施方式
为使本发明的内容更加清楚, 以下结合附图, 通过具体的实施例对本 发明的可检测并显示渗出液体积的负压伤口治疗系统进行详细说明。
参见图 2, 本实施例中的可检测并显示渗出液体积的负压伤口治疗系 统包括: 集液瓶 5 , 用于收集伤口渗出液; 负压伤口治疗设备 8, 包括负压 源 6和控制器 7;伤口套件,用于填充伤口并封闭伤口,包括伤口填充物 2、 伤口封闭物 3 , 伤口填充物 2通过连接管 4与集液瓶 5连通; 集液瓶 5与 负压源 6连通, 由负压源为其提供负压, 使伤口渗出液流入集液瓶 5中; 伤口渗出液管理装置包括伤口渗出液体积检测装置 9以及伤口渗出液粘稠 度检测装置 13; 运算单元(图中未示出), 根据检测得到的体积和粘稠度 数据,生成一对应关系图; 显示界面 12 ,显示体积和粘稠度的对应关系图; 所述运算单元将检测得到的体积和 /或粘稠度数据分别与各自相应的预设 报警值进行匹配, 在体积和 /粘稠度数据达到预设的报警值时发出报警信 号, 还包括一报警器 14, 根据报警信号报警。
其中, 伤口渗出液体积检测装置 9套在一中心线沿集液瓶竖向延伸的 丝杆 10上, 丝杆 10的中心线与集液瓶 5的竖向平行; 伤口渗出液体积检 测装置 9包括: 发射单元 91 , 向集液瓶 5发射电磁波或超声波信号, 设置 在集液瓶 5的一侧; 接收单元 92, 接收经过集液瓶 5折射的电磁波或超声 波信号, 与发射单元 91相对地设置在集液瓶 5的另一侧, 使之在集液瓶 5 此处位置无渗出液时, 刚好接收到经过穿透折射的电磁波或超声波信号; 检测控制单元, 根据接收单元是否接收到电磁波或超声波信号进行判断, 若否, 则判断伤口渗出液体积检测装置所在位置处有伤口渗出液。
其中, 本实施例中伤口渗出液体积检测装置采用的电磁波为红外线, 作为另外的实施方式, 也可采用可见光、 紫外线、 激光或其他电磁信号, 可以采用是超声波、 次声波或其他声波信号。
其中,伤口渗出液体积检测装置 9在丝杆 10中心线周向方向上受到约 束, 仅能够在丝杆 10中心线方向上移动; 丝杆 10的一端与电机 11连接, 在电机 11的驱动下, 丝杆 10绕其中心线旋转, 从而带动伤口渗出液体积 装置 9沿丝杆 10中心线上下移动,对集液瓶 5相应位置是否具有液体进行 检测。
其中, 丝杆 10也可由其他传动机构如: 齿轮组、 皮带、 皮轮中的任一 种替代; 只要使伤口渗出液体积检测装置 9能够相对于集液瓶 5在竖向方 向移动, 就可以实现检测集液瓶 5相应位置液体量的目的。
本实施例中的伤口渗出液体积检测装置 9 , 当电机 11工作时, 通过丝 杆 10带动伤口渗出液体积检测装置 9上下运动。接收单元在能与不能探测 到红外信号间跳转时, 则可以通过渗出液体积检测装置 9确定此时所处位 置对应于液面, 然后再根据马达的行程, 确定集液瓶 5的液面高度, 从而 计算出集液瓶 5内伤口渗出液的量。
以下对本实施例中渗出液体积检测装置 9的工作原理进行说明。
参见图 3 , 发射单元 91发出红外线 S1 , 经过集液瓶 5的侧壁 51—侧 穿透折射进入集液瓶 5内部区域 52 , 然后再从集液瓶 5的侧壁 51另一侧 射出, 接收单元 92接收到穿透折射过来的红外线 SI , 另一部分红外光线 经反射成反射光线 S2。
参见图 4, 图 4为集液瓶中相应位置无伤口渗出液时的光路示意图, 下面对发射单元 91、 接收单元 92之间的集液瓶 5该处无渗出液时的红外 线光路做进一步分析:
设 α, β , γ, Θ分别为红外线射到集液瓶 5外壳外表面、 射入集液瓶 5 外壳、射到集液瓶 5外壳内表面、射入集液瓶 5内腔时红外线与法线夹角。 设 δ为红外线射入集液瓶 5外壳外表面的点及从内表面射出点分别与集液 瓶 5剖面中心点连线之间形成的夹角。 设集液瓶 5半径为 R、 壁厚为 h。
设集液瓶 5外壳折射率为 nl , 空气中折射率约为 1 , 由折射定律: sina = nlsinp- nlsiny=sine, 贝' J α θ。 同理可得 θ,=α,。 Θ与 θ,是等腰 三角形两底角, 故0=0,, 贝' J α=θ=θ,=α,。
由此, 则射入集液瓶 5外壳外表面的红外线 S11与从内表面射出的红 外线 S13间夹角 ε主要由红外线在集液瓶 5外壳外表面的射入点及从内表 面射出的射出点两点处圆弧法线的偏转决定, 可近似写作:
ε= δ ~ h tanp/R=h/R tan[arcsina I nl]
射入集液瓶 5内表面的红外线 S12与射出集液瓶 5外壳外表面的红外 线 S13间的夹角亦为 δ。红外线 S11与红外线 S13间夹角应为 2£=25 2h/R tan(arcsina / nl)。
当 h«R, δ可忽略不计, 射入集液瓶 5外壳外表面的红外线 S11与射 出集液瓶 5外壳外表面的红外线 S13基本平行。
因此,如图 4所示,接收单元 92与发射单元 91设置在同一水平线上, 接收单元能够接收到经过折射的红外线, 判断出此处无渗出液。
同理, 可对发射单元 91、 接收单元 92之间的集液瓶 5该处有透明渗 出液时的红外线光路做进一步分析, 参见图 5 , 图 5为集液瓶中相应位置 有渗出液时的光路图:
设伤口渗出液折射率为 η2 , 则由折射定律:
sina = n2 sinB = n2 sinB' = sina'。
射入集液瓶 5外壳外表面的红外线 S11与从内表面射出的红外线 S 12 间夹角 ε:
ε = (α-θ) +δ =[a-arcsin(sina / η2 ) ]+δ - [a-arcsin(sina / η2 )] + h/R tan(arcsina / nl);
当 h«R, δ可忽略不计, 夹角 ε: ε a-arcsin(sina I n2 );
红外线 Sl l与红外线 S13间夹角应为: 2ε 2 [a-arcsin(sina / n2 )] ; 示例:当 α=30。即 π/6弧度, 并假设渗出液折射率与水相近,为 η2=1.33。 则红外线 Sl l与红外线 S 13间夹角应为: 2ε 0.276弧度, 即 15.8。。
即集液瓶 5中此处有伤口渗出液时, 入射、 出射光线间夹角可产生约 15.8。的变化。 因此, 参见图 5 , 接收单元 92接收不到红外光线, 因此, 可 以判断集液瓶 5中此处有伤口渗出液。
利用此特性,通过接收单元 92的位置设置,使之在集液瓶 5无伤口渗 出液情况下恰好接收到出射光线, 而在集液瓶 5有伤口渗出液的情况下无 法接收到该出射光线, 可以判断集液瓶 5内液体位置, 进而计算出集液瓶 5内液体体积。
本实施例中的控制器 7还包括一运算单元, 根据伤口渗出液的体积及 时间, 运算出伤口渗出液流量, 显示界面还可选择性地显示伤口渗出液流 量数据。 伤口渗出液流量可以以毫升 /秒(mL/S )、 毫升 /分钟(mL/Min )、 毫升 /小时 (mL/H )、 升 /秒(L/S )、 升 /分钟(L/Min )、 升 /小时 ( L/H ) 中 的任一种来表示。
本实施例中, 在集液瓶 5内、 伤口渗出液体积检测装置 9所在的位置 无液体时,使接收单元 92能够接收到电磁波信号或声波信号,在伤口渗出 液体积检测模块 9所在的位置有液体时,使接收单元 92不能接收到电磁波 信号或声波信号;进而,在接收单元 92未接收到电磁波信号或声波信号时, 判断伤口渗出液体积检测装置 9所在的位置是滞有液体。 根据上述描述, 也可以用相反的方式确定伤口渗出液体积检测装置 9所在的位置是滞有液 体。 比如, 在电磁波信号或声波信号能够穿过集液瓶 5及液体时, 在伤口 渗出液体积检测装置 9所在的位置有液体时,使接收单元 92能够接收到电 磁波信号或声波信号,在伤口渗出液体积检测装置 9所在的位置无液体时, 使接收单元 92不能接收到电磁波信号或声波信号, 再根据接收单元 92是 否接收到电磁波信号或声波信号, 判断伤口渗出液体积检测装置 9所在的 位置是滞有液体, 以实现检测集液瓶 5内液体量的目的。 另外, 还可以根 据接收到的电磁波信号或声波信号的信号强弱的不同, 判断伤口渗出液体 积检测装置 9所在的位置是滞有液体, 等等。
其中, 伤口渗出液粘稠度检测装置 13 , 检测伤口渗出液的粘稠度, 该 伤口渗出液粘稠度检测装置包括: 传感器, 包括发射单元及接收单元, 用 来检测伤口渗出液的粘稠度信号; 伤口渗出液粘稠度检测控制单元, 根据 接收到的粘稠度信号运算出伤口渗出液的粘稠度。 由于传感器的接收单元 接收到的电磁波或声波信号越大, 伤口渗出液的粘稠度越小, 所以伤口渗 出液检测装置对应在集液瓶的位置处没有伤口渗出液时, 其接收单元接收 到的电磁波信号值最大, 将此电磁波信号最大值与伤口渗出液粘稠度最小 值 100对应, 接收单元完全接收不到电磁波信号时, 电磁波信号最小, 将 此电磁波信号最小值与伤口渗出液粘稠度的最大值 100对应, 检测时, 可 以将实际检测到的电磁波信号值与最大值及最小值对比, 即可获知其对应 的伤口渗出液粘稠度值。
其中, 该粘稠度检测控制单元还根据接收到的粘稠度信号运算出伤口 渗出
液的粘稠度。 运输单元计算单位时间内多组粘稠度数据的平均值, 并 将粘稠度平均值与预先设定的粘稠度等级进行匹配, 得出该粘稠度数据对 应的等级。 其中, 预先设定的粘稠度等级为: 根据伤口渗出液粘稠度检测 装置, 将粘稠度的值在 0 ~ 100范围内, 分成高、 中、 低三个等级评价, 并 且每级根据其轻重用一数字表示, 具体分级如表 1 :
表 1 等级匹配条件 等级 等级量化
(粘稠度的大小)
0-40 低 1
40-70 中 3
70-100 高 5 表 1中的分级方式解释如下:
当检测到的伤口渗出液粘稠度的平均值在 0 ~ 40之间,则判断为低级, 赋予数值 1量化;
当检测到的伤口渗出液的粘稠度的平均值在 40 ~ 70之间,则判断为中 级, 赋予数值 3量化;
当检测到的伤口渗出液的粘稠度的平均值在 70 ~ 100之间, 则判断为 高级, 赋予数值 5量化。
其中, 运算单元还根据单位时间内伤口渗出液的体积变化运算出伤口 渗出液的流量, 并将流量与预定的流量等级进行匹配, 得出该流量对应的 等级。 其中, 预先设定的流量等级分为: 将单位时间内的伤口渗出液体积 分成高、 中、 低三个等级评价, 并且每级根据其轻重用一数字表示, 具体 分级如表 2:
表 2
Figure imgf000012_0001
表 2中的分级方式解释如下:
若检测得到每 24小时伤口渗出液的体积小于 5立方厘米,则判定流量 为低级, 赋予数值 1量化;
若检测得到每 24小时伤口渗出液的体积在 5立方厘米到 10立方厘米 之间, 则判定流量为中级, 赋予数值 3量化;
若检测得到每 24小时伤口渗出液的体积大于 10立方厘米, 则判断流 量为高级, 赋予数值 1量化。
本实施例中的运算单元, 根据上述流量数据、 流量等级、 流量等级量 化数值以及粘稠度数据、 粘稠度等级、 粘稠度等级量化数值, 生成一对应 关系图, 该图为一矩阵图, 参见图 6, 此图即为图表生成单元生成的、 显 示界面 12显示的伤口渗出液的体积和粘稠度的对应关系图, 为一矩阵图。 此伤口渗出液的体积和粘稠度关系的矩阵图, 用来指示伤口治疗是否正常 进行。 通过图 6的渗出液体积和粘稠度的关系矩阵图, 来评价伤口治疗的 情况, 可以减少一些对渗出液评价的主观想法。
本实施例中的体积与粘稠度对应关系图一矩阵图提供了一种用来产生 一种与渗出液体积和粘稠度都相关的数值方法, 其将体积和粘稠度的三个 等级一一高、 中、 低分别赋予 5、 3、 1的数值进行量化, 通过量化后的体 积和粘稠度的分级, 将测得的体积和粘稠度的数值相加, 以便于医护人员 根据伤口渗出液体积和粘稠度的关系矩阵图,了解到目前伤口的治疗情况, 从而进行相应的处理。
以下对伤口渗出液的体积和粘稠度的关系矩阵图进行举例说明: 当通过关系矩阵图计算出来的数值为 2或 4时, 即关系矩阵图中显示 绿色部分 a, 说明伤口治疗情况正常进行, 该负压伤口治疗设备正常使用, 报警器不会发出报警声音或灯光。
当通过关系矩阵图计算出来的数值为 6时, 即关系矩阵图中显示黄色 部分 b, 说明伤口治疗情况有异常, 伤口可能受到感染; 此时负压伤口治 疗设备发出警告信号, LCD显示界面显示警告信息,报警器—— LED报警 灯也同时显示黄色警示光并发出报警声音。
当通过关系矩阵图计算出来的数值为 8或 10时,即关系矩阵图中显示 红色部分 c, 说明伤口治疗情况异常, 伤口受到严重感染, 需要及时进行 伤口处理。 发出报警信号, LCD界面显示报警信息, 报警器—— LED报警 灯同时显示红色警示光并发出报警声音。
其中, 显示界面为 LED显示界面。 当然, 也可选用其他显示界面, 如 LCD界面。
本实施例中的可检测伤口渗出液体积与粘稠度并显示其关系的负压伤 口治疗系统, 在使用时, 通过伤口渗出液的体积和粘稠度的关系矩阵图, 实现对伤口渗出液的管理, 当出现伤口恶化, 受到严重感染时, 及时提醒 医护人员进行相应应急处理。 以上仅是本发明的优选实施方式, 应当指出的是, 上述优选实施方式 不应视为对本发明的限制, 本发明的保护范围应当以权利要求所确定的范 围为准。 对于本技术领域的技术人员来说, 在不脱离本发明的精神和范围 内, 还可以做出若干改进和润饰, 这些改进和润饰也应视为本发明的保护 范围。

Claims

权 利 要 求
1、一种可显示渗出液体积与粘稠度关系图的负压伤口治疗系统,包括: 集液瓶, 收集伤口渗出液;
负压伤口治疗设备, 由负压源和控制器组成, 为集液瓶提供负压; 伤口套件, 填充并封闭伤口, 通过连接管与集液瓶连通;
其特征在于, 还包括:
伤口渗出液管理装置, 检测集液瓶内伤口渗出液的体积和粘稠度; 运算单元, 根据检测得到的体积和粘稠度数据, 生成一体积和粘稠度 的对应关系图;
显示界面, 显示体积和粘稠度的对应关系图。
2、如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述运算单元还将检测得到的体积数据与预设报 警值进行匹配, 匹配成功时发出报警信号; 还包括一报警器, 根据报警信 号报警。
3、如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述运算单元还将检测得到的粘稠度数据与预设 报警值进行匹配, 匹配成功时发出报警信号; 还包括一报警器, 根据报警 信号报警。
4、如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述运算单元还将检测得到的粘稠度数据、 体积 数据分别与各自的预设报警值进行匹配, 如任一匹配成功, 则发出报警信 号; 还包括一报警器, 根据报警信号报警。
5、如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述伤口渗出液管理装置包括伤口渗出液体积检 测装置, 包括:
发射单元, 向集液瓶发射电磁波或声波信号;
接收单元, 接收经过集液瓶反射或折射的电磁波或声波信号; 体积检测控制单元, 根据接收单元是否接收到电磁波或声波信号判断 渗出液体积检测装置所在位置处是否有伤口渗出液。
6、如权利要求 5所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述伤口渗出液体积检测装置设置在一传动机构 上, 所述传动机构连接一驱动机构, 在驱动机构及传动机构的作用下, 所 述伤口渗出液体积检测装置在传动机构上沿集液瓶竖向移动。
7、如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述运算单元还根据单位时间内伤口渗出液的体 积变化运算出伤口渗出液的流量, 并将流量与预定的流量等级进行匹配, 得出该流量对应的等级, 所述显示界面还显示伤口渗出液的流量数据及等 级。
8、如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述伤口渗出液管理装置包括伤口渗出液粘稠度 检测装置, 检测伤口渗出液的粘稠度, 所述伤口渗出液粘稠度检测装置包 括:
传感器, 用于检测伤口渗出液的粘稠度信号;
粘稠度检测控制单元, 根据接收到的粘稠度信号运算出伤口渗出液的 粘稠度。
9、如权利要求 8所述的可显示渗出液体积与粘稠度关系图的负压伤口 治疗系统, 其特征在于, 所述运算单元将预算出的伤口渗出液粘稠度与预 先设定的粘稠度等级进行匹配, 得出该粘稠度对应的等级。
10、 如权利要求 8所述的可显示渗出液体积与粘稠度关系图的负压伤 口治疗系统, 其特征在于, 所述运算单元还运算出单位时间内伤口渗出液 粘稠度的平均值。
11、 如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤 口治疗系统, 其特征在于, 所述伤口渗出液体积与粘稠度的对应关系图为 矩阵图, 横向或纵向表示伤口渗出液的粘稠度大小, 纵向或横向表示伤口 渗出液的体积大小。
12、 如权利要求 2~4任一项所述的可显示渗出液体积与粘稠度关系图 的负压伤口治疗系统, 其特征在于, 所述显示界面还显示报警信号。
13、 如权利要求 2~4任一项所述的可显示渗出液体积与粘稠度关系图 的负压伤口治疗系统, 其特征在于, 所述报警装置在报警时发出光和 /或声 音。
14、 如权利要求 1所述的可显示渗出液体积与粘稠度关系图的负压伤 口治疗系统, 其特征在于, 所述显示界面为 LED界面或 LCD界面。
PCT/CN2010/078910 2010-11-19 2010-11-19 可显示渗出液体积与粘稠度关系图的负压伤口治疗系统 WO2012065309A1 (zh)

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