WO2016008154A1 - 负压伤口治疗仪 - Google Patents
负压伤口治疗仪 Download PDFInfo
- Publication number
- WO2016008154A1 WO2016008154A1 PCT/CN2014/082499 CN2014082499W WO2016008154A1 WO 2016008154 A1 WO2016008154 A1 WO 2016008154A1 CN 2014082499 W CN2014082499 W CN 2014082499W WO 2016008154 A1 WO2016008154 A1 WO 2016008154A1
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- WIPO (PCT)
- Prior art keywords
- piezoelectric
- piece
- plate
- negative pressure
- valve structure
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
Definitions
- the present invention provides a negative pressure wound therapeutic apparatus, and more particularly to a negative pressure ring for providing and maintaining a wound. Negative pressure wound therapy device.
- the general decompression treatment system comprises a negative pressure wound treatment device, a decompression delivery tube and A dressing for covering a wound that provides and maintains a negative pressure environment at the wound.
- the inventors have felt that the above-mentioned deficiency can be improved, and the research is devoted to the application of the theory.
- the present invention is proposed to be reasonable in design and effective in improving the above-mentioned deficiency.
- the technical problem to be solved by the present invention is to provide a negative pressure wound therapeutic apparatus capable of achieving noiseless effect. fruit.
- the present invention provides a negative pressure wound treatment apparatus comprising: a piezoelectric valve junction
- the structure includes a piezoelectric elastic piece assembly and a first pole piece and a second respectively disposed on two sides of the piezoelectric elastic piece assembly a pole piece, the piezoelectric spring piece assembly comprising an elastic piece and a piezoelectric plate piece, the piezoelectric plate piece being stacked on the elastic piece
- the elastic piece is provided with a plurality of first air ports
- the first pole piece is provided with at least one second air port, the second air port Interconnecting with the first gas port
- a getter structure the getter structure is disposed at one side of the piezoelectric valve structure
- a micro control unit the piezoelectric valve structure is electrically connected to the micro control unit.
- the invention further provides a negative pressure wound treatment apparatus, comprising: a piezoelectric valve structure comprising a piezoelectric elastic piece assembly And a first pole piece and a second pole piece respectively disposed on two sides of the piezoelectric elastic piece assembly, the piezoelectric spring piece assembly package An elastic piece and a piezoelectric plate piece are stacked on one side of the elastic piece; a suction structure, the suction An air structure is disposed on one side of the piezoelectric valve structure; and a micro control unit electrically connected to the piezoelectric valve structure Micro control unit.
- the piezoelectric valve structure of the negative pressure wound therapeutic apparatus of the present invention comprises a piezoelectric elastic piece assembly and is respectively disposed on the piezoelectric elastic piece a first pole piece and a second pole piece on both sides of the component, the piezoelectric spring piece assembly comprises an elastic piece and a piezoelectric plate piece.
- the piezoelectric plate is stacked on one side of the elastic piece.
- the suction structure is disposed on one side of the piezoelectric valve structure.
- Figure 1 is a schematic view of a negative pressure wound therapeutic apparatus of the present invention
- FIG. 2 is a perspective view of the piezoelectric valve structure and the suction structure of the present invention
- FIG. 3 is an exploded perspective view of the piezoelectric valve structure and the suction structure of the present invention.
- FIG. 4 is an exploded perspective view showing the piezoelectric valve structure and the suction structure of the present invention at another angle;
- Figure 5 is a cross-sectional view showing the piezoelectric valve structure and the suction structure of the present invention.
- FIG. 6 is a schematic view showing the operation of the piezoelectric valve structure and the suction structure of the present invention.
- Figure 7 is a perspective exploded view of another embodiment of the piezoelectric valve structure and the getter structure of the present invention.
- FIG. 8 is a schematic view showing the operation of another embodiment of the piezoelectric valve structure and the suction structure of the present invention.
- Figure 9 is a perspective exploded view of still another embodiment of the piezoelectric valve structure and the getter structure of the present invention.
- Fig. 10 is a schematic view showing the operation of still another embodiment of the piezoelectric valve structure and the getter structure of the present invention.
- FIG. 1 is a schematic diagram of a negative pressure wound therapeutic apparatus according to the present invention.
- the therapeutic apparatus may include a piezoelectric valve structure, a getter structure, and a micro control unit (Micro Controller Unit: MCU) 3, a container 4 and a sensor 5.
- MCU Micro Controller Unit
- the piezoelectric valve structure 1 is electrically connected to the micro control unit 3 to control the piezoelectric valve junction by using the micro control unit 3
- the container 4 can be connected to the suction structure 2 by a delivery pipe or the container 4
- the delivery tube is connected with a dressing for covering the wound (not shown), and can be pumped by the piezoelectric valve structure 1 and the suction structure 2 Air to maintain the negative pressure environment at the wound, the container 4 can be used to collect liquid.
- This embodiment is further set a sensor 5, the sensor 5 is electrically connected to the micro control unit 3, the sensor 5 can also be electrically connected to the piezoelectric valve Structure 1.
- the sensor 5 can be inserted into the container 4 and can be used to detect the liquid level of the liquid in the container 4 when the liquid level reaches At a certain height, the operation of the piezoelectric valve structure 1 and the suction structure 2 can be stopped.
- the micro control unit 3 can be further electrically connected to a debug unit 6 to provide a debugging function.
- Negative pressure The wound treatment device can be further electrically connected with a power module 7, a power management module 8 and a display module 9, the power source
- the module 7 and the power management module 8 can be used to provide the power required by the negative pressure wound therapy apparatus, and the display module 9 is a liquid A crystal display or the like can be used to display various information such as the state of use.
- FIG. 2 is a perspective view of the piezoelectric valve structure and the suction structure of the present invention
- FIG. 3 and 4 is an exploded perspective view of the piezoelectric valve structure and the suction structure of the present invention
- FIG. 5 is a piezoelectric valve structure and suction of the present invention.
- FIG. 6 is a schematic view showing the operation of the piezoelectric valve structure and the suction structure of the present invention.
- the piezoelectric valve structure 1 may include a piezoelectric spring assembly 11 and are respectively disposed on the pressure A first pole piece 12 and a second pole piece 13 on both sides of the electric elastic piece assembly 11.
- this embodiment is directed to piezoelectric The detailed structural features of the valve structure 1 will be described.
- the piezoelectric elastic piece assembly 11 can include an elastic piece 111 and a piezoelectric plate piece 112, and the piezoelectric plate piece 112 can be Laminated on the side of the elastic piece 111 facing away from the air suction structure 2, wherein the piezoelectric plate piece 112 corresponds to the first and second poles
- the polarities of the sheets 12, 13 are set to match the suction direction of the getter structure 2, so the present invention does not limit the pressure.
- the elastic piece 111 is a sheet body having flexibility and swinging up and down, and A plurality of first ports 1111 are provided.
- the piezoelectric plate 112 is a plate made of a piezoelectric material (PZT material), and is stacked on the elastic piece 111. A side facing away from the suction structure 2, and the piezoelectric plate 112 does not cover the first ports 1111. With this, When the piezoelectric plate 112 drives the elastic piece 111 to oscillate up and down due to the piezoelectric effect, the piezoelectric elastic piece assembly 11 The getter structure 2 can be driven to perform gas transport.
- the thickness of the elastic piece 111 is preferably but not limited to 250 to 350.
- the thickness of the piezoelectric sheet 112 is preferably not limited to 0.08 to 0.15 mm.
- the first and second pole pieces 12, 13 are respectively a thin conductive sheet, wherein the first pole piece 12 can be disposed on the piezoelectric
- the elastic piece 111 of the elastic piece assembly 11 faces one side of the air suction structure 2, and is provided with at least one second air port 121, The two ports 121 are in communication with the first port 1111, and the second port 121 is located at an intermediate portion of the first pole piece 12.
- the second pole piece 13 may be disposed on a side of the piezoelectric elastic piece assembly 11 facing away from the air suction structure 2.
- the first A suitable gap can be formed between the pole piece 12 and the elastic piece 111 to facilitate the flow of the gas. Thickness of the first pole piece 12 The degree is preferably but not limited to 0.05 to 0.15 mm.
- the piezoelectric valve structure 1 may further include an insulating member 14 which may be made of an insulating material to achieve an insulating effect.
- the insulating member 14 is stacked on the elastic piece 111 and the second pole piece 13 In order to prevent the second pole piece 13 from being electrically connected to each other through the elastic piece 111 and the first pole piece 12.
- the first The pole piece 12 is a negative electrode piece
- the second pole piece 13 is a positive electrode piece, but the invention does not deal with the polarity of the pole piece.
- the shape and structure of the piezoelectric piece assembly 11, the first pole piece 12 and the second pole piece 13 can also be adapted. Change in actual demand.
- 5 to 200 are formed between the elastic piece 111 and the first pole piece 12
- the pitch of ⁇ m is preferably a pitch of 5 to 20 ⁇ m, and the manner in which the pitch is formed is not limited.
- the piezoelectric valve structure 1 may further include a back plate 15 disposed on the elastic piece 111 facing away from the air suction
- the back plate 15 may be made of an insulating material such as plastic, and the shape of the back plate 15 is substantially the same as the suction knot.
- One side (bottom side) of the structure 2 corresponds to the piezoelectric piece assembly 11, the first pole piece 12, and the second pole piece 13 Placed between the backing plate 15 and the suction structure 2.
- the back plate 15 is provided with at least one air outlet 151.
- Back plate 15 and suction knot The structure 2 is combined, and the bonding manner thereof may be locking, snapping, splicing, gluing, etc., and the invention is not limited.
- Backplane A suitable gap can be formed between the 15 and the elastic piece 111 to facilitate the flow of the gas.
- the piezoelectric valve structure 1 may further include a spacer 16 disposed on the elastic piece 111 and the first pole Between the sheets 12, a through hole 161 is defined in the middle of the spacer 16 to allow passage between the elastic piece 111 and the first pole piece 12.
- the through holes 161 are in communication with each other.
- a spacer 16 is disposed between the elastic piece 111 and the first pole piece 12, This spacing is formed between the elastic sheet 111 and the first pole piece 12.
- the getter structure 2 is disposed on one side (upper side) of the piezoelectric valve structure 1, and the gettering junction
- the structure 2 can include an upper cover 21 and an air inlet plate 22, wherein the upper cover 21 can be coupled to the back plate 15 of the piezoelectric valve structure 1.
- the combination may be a locking, a snapping, a splicing, a gluing, etc., and the present invention is not limited to the upper cover 21 It can be made of insulating materials such as plastic.
- the air inlet plate 22 is interposed between the upper cover 21 and the piezoelectric valve structure 1 to The suction structure 2 generates a function of a vacuum (vacuum).
- the thickness of the air inlet plate 22 is preferably but not limited to 0.3 to 1 mm.
- the upper cover 21 is a plate corresponding to the piezoelectric valve structure 1 and is mounted on one side of the piezoelectric valve structure 1 .
- an air inlet 211 is provided, and the upper cover 21 is usually additionally provided with a joint 212, which can be used for connecting the conveying pipe, and The first air inlet 211 can be opened inside the joint 212 to facilitate the introduction of gas into the duct through the duct and the joint 212 Air inlet 211.
- the upper cover 21 is disposed at a middle portion of a side surface of the air inlet plate 22 with a third air port 213. a plurality of first flow channels 214 are connected to the outer edge of the three gas ports 213, and the first flow channels 214 are outwardly extended.
- the flow path 214 communicates with the air inlet 211 through the third port 213.
- the air inlet plate 22 is disposed between the upper cover plate 21 and the piezoelectric valve structure 1 and is a thin plate piece.
- the sheet sheets are formed by superposing each other, or may be integrally formed, and the invention is not limited.
- the air inlet plate 22 faces the upper cover
- One side of the plate 21 is provided with a plurality of fourth ports 221, and the middle portion of the other side of the inlet plate 22 is provided with a fifth portion.
- a gas port 222, a plurality of second flow channels 223 are connected to the outer edge of the fifth gas port 222, and the second flow channels 223 are extended to the outer surface.
- the fourth air port 221 is connected to the fourth air port 221, and the fourth air ports 221 are respectively connected to the second flow channel 223.
- Five gas ports 222 Thereby, the gas can be respectively introduced from the fourth ports 221 and uniformly guided from the fifth port 222. Outputting a relatively concentrated airflow to supply a piezoelectric shrapnel assembly between the first and
- FIG. 6 is a piezoelectric valve of the present invention.
- FIG. 6 Schematic diagram of the structure and the structure of the getter structure, when the first and second pole pieces 12, 13 are turned on, the piezoelectric shrapnel assembly 11
- the piezoelectric plate 112 starts to oscillate before and after the elastic piece 111 to push the gas to flow.
- gas The body initially enters between the upper cover 21 and the air inlet plate 22 from the air inlet 211, and the gas will pass through the third gas of the upper cover plate 21.
- the port 213 flows to the first flow path 214, and then the gas enters the fourth gas port 221 of the air inlet plate 22, and the gas passes again.
- the fourth port 221 and the second channel 223 flow to the fifth port 222 and pass through the second port 121 of the first pole piece 12.
- the airflow passing through the second air port 121 sequentially passes through the first air port 1111 of the elastic piece 111 and the back plate 15
- the air outlet 151 is discharged outward.
- the suction structure 2 can connect the container 4 with a delivery tube and a dressing for covering the wound. Used to provide and maintain a negative pressure environment at the wound site.
- FIG. 7 and FIG. 8 are respectively a perspective exploded view of another embodiment of the piezoelectric valve structure and the getter structure of the present invention.
- Diagram and action diagram The difference between this embodiment and the above embodiment is only that the upper cover 21 is provided with an air inlet. 211.
- the air inlet plate 22 is provided with a sixth air port 224 corresponding to the air inlet 211.
- the gas is from the air inlet After entering the upper cover 21, the gas can pass directly through the fifth port 224 of the air inlet plate 22, and then flow downward to The second port 121 of the first pole piece 12 of the piezoelectric valve structure 1 and the manner in which the gas flows in the piezoelectric valve structure 1
- the embodiments are the same and will not be described again.
- FIG. 9 and FIG. 10 are respectively a perspective exploded view of another embodiment of the piezoelectric valve structure and the getter structure of the present invention.
- Diagram and action diagram The difference between this embodiment and the above embodiment is only that the upper cover 21 is provided with an air inlet. 211, and the air intake plate 22 of the above embodiment is deleted, so that the structure of the air suction structure 2 is further simplified. With this, After the gas enters the upper cover 21 from the air inlet 211, the gas can flow directly downward to the first pole of the piezoelectric valve structure 1.
- the second port 121 of the sheet 12, the gas flowing in the piezoelectric valve structure 1 is the same as the above embodiment, so it is no longer Narration.
- the piezoelectric valve structure of the present invention comprises a piezoelectric elastic piece assembly and one respectively disposed on two sides of the piezoelectric elastic piece assembly a first pole piece and a second pole piece, the piezoelectric spring piece assembly comprises an elastic piece and a piezoelectric plate piece, and the piezoelectric plate piece is arranged On one side of the elastic piece.
- the suction structure is disposed on one side of the piezoelectric valve structure.
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Abstract
一种负压伤口治疗仪，其包括压电阀结构（1）、吸气结构（2）以及微控制单元（3）。压电阀结构（1）包括压电弹片组件（11）及分别设置于压电弹片组件（11）之两侧的第一极片（12）及第二极片（13），压电弹片组件（11）包括弹性片（111）以及压电板片（112），压电板片（112）迭设于弹性片（111）的一侧，弹性片（111）设有数个第一气口（1111），第一极片设有至少一个第二气口（121），第二气口（121）与第一气口（1111）相互连通。吸气结构（2）设置于压电阀结构（1）的一侧，压电阀结构（1）电性连接于微控制单元（3）。藉此，共振频率可达到20kHz以上，能达到无噪音的效果。
Description
本发明在于提供一种负压伤口治疗仪，尤指一种用于提供并维持伤口处之负压环
境的负压伤口治疗仪。
随着医疗科技的提升，已发展出各种促进伤口治疗或愈合的疗法。其中临床研究
发现，于伤口组织部位提供减压环境可加速该伤口组织部位之新组织的生长，因此透
过减压方式用于创伤治疗的技术，被称作「负压组织治疗(Negative Pressure Wound
Therapy)」、「减压治疗」或「真空疗法」等，此类治疗提供许多效益，包括愈合更快
及肉芽组织之形成增加。一般减压治疗系统包含一负压伤口治疗仪、一减压输送管及
一用于覆盖伤口的敷件，提供并维持伤口处之负压环境。
习知的负压伤口治疗仪系以马达泵浦抽送空气，以维持伤口处之负压环境。惟，
马达泵浦在运作时会产生较大的噪音，尤其是在患者睡觉时，会严重的影响患者的睡
眠。
综上所述，本发明人有感上述缺失可改善，乃特潜心研究并配合学理之应用，终
于提出一种设计合理且有效改善上述缺失之本发明。
发明内容
本发明所要解决的技术问题，在于提供一种负压伤口治疗仪，能达到无噪音的效
果。
为了解决上述的技术问题，本发明提供一种负压伤口治疗仪，包括：一压电阀结
构，包括一压电弹片组件及分别设置于该压电弹片组件之两侧的一第一极片及一第二
极片，该压电弹片组件包括一弹性片以及一压电板片，该压电板片迭设于该弹性片的
一侧，该弹性片设有数个第一气口，该第一极片设有至少一第二气口，所述第二气口
与所述第一气口相互连通；一吸气结构，该吸气结构设置于该压电阀结构的一侧；以
及一微控制单元，该压电阀结构电性连接于该微控制单元。
本发明另提供一种负压伤口治疗仪，包括：一压电阀结构，包括一压电弹片组件
及分别设置于该压电弹片组件之两侧的一第一极片及一第二极片，该压电弹片组件包
括一弹性片以及一压电板片，该压电板片迭设于该弹性片的一侧；一吸气结构，该吸
气结构设置于该压电阀结构的一侧；以及一微控制单元，该压电阀结构电性连接于该
微控制单元。
本发明至少具有下列的优点：
本发明负压伤口治疗仪的压电阀结构包括一压电弹片组件及分别设置于压电弹片
组件之两侧的一第一极片及一第二极片，压电弹片组件包括一弹性片以及一压电板片，
压电板片迭设于弹性片的一侧。吸气结构设置于压电阀结构的一侧。藉此设计，共振
频率可达到20kHz以上，能达到无噪音的效果。
为使能更进一步了解本发明的特征及技术内容，请参阅以下有关本发明的详细说
明与附图，然而所附图式仅提供参考与说明用，并非用来对本发明加以限制者。
说明书附图用来提供对本发明的进一步理解，构成本发明的一部分，本发明的示
意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为本发明负压伤口治疗仪的示意图；
图2为本发明压电阀结构及吸气结构的立体图；
图3为本发明压电阀结构及吸气结构的立体分解图；
图4为本发明压电阀结构及吸气结构另一角度的立体分解图；
图5为本发明压电阀结构及吸气结构的剖视图；
图6为本发明压电阀结构及吸气结构的动作示意图；
图7为本发明压电阀结构及吸气结构另一实施例的立体分解图；
图8为本发明压电阀结构及吸气结构另一实施例的动作示意图；
图9为本发明压电阀结构及吸气结构又一实施例的立体分解图；
图10为本发明压电阀结构及吸气结构又一实施例的动作示意图。
符号说明
1 压电阀结构 11 压电弹片组件
111 弹性片 1111 第一气口
112 压电板片 12 第一极片
121 第二气口 13 第二极片
14 绝缘件 15 背板
151 出气口 16 隔片
161 透孔 2 吸气结构
21 上盖板 211 进气口
212 接头 213 第三气口
214 第一流道 22 进气板
221 第四气口 222 第五气口
223 第二流道 224 第六气口
3 微控制单元 4 容器
5 传感器 6 侦错单元
7 电源模块 8 电源管理模块
9 显示模块
需要说明的是，在没有明确限定或不冲突的情况下，本发明的各个实施例中的特
征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
[第一实施例]
请参阅图1，为本发明负压伤口治疗仪的示意图，本实施例提供一种负压伤口治
疗仪，可包括一压电阀结构1、一吸气结构2、一微控制单元(Micro Controller Unit：
MCU)3、一容器4及一传感器5。
该压电阀结构1电性连接于微控制单元3，以便利用微控制单元3控制压电阀结
构1及吸气结构2的运作。该容器4能以输送管或直接连接于吸气结构2，该容器4
另以输送管连接一用于覆盖伤口的敷件(图略)，能以压电阀结构1及吸气结构2抽送
空气，以维持伤口处之负压环境，该容器4则能用以收集液体。本实施例进一步设置
一传感器5，该传感器5电性连接于微控制单元3，该传感器5也可电性连接于压电阀
结构1。该传感器5可伸入容器4内，可用以侦测容器4内液体的液位，当液位到达
一定高度时，可停止压电阀结构1及吸气结构2的运作。
该微控制单元3可进一步的电性连接有一侦错单元6，以提供侦错功能。该负压
伤口治疗仪可进一步的电性连接有电源模块7、电源管理模块8及显示模块9，该电源
模块7及电源管理模块8可用以提供负压伤口治疗仪所需的电源，该显示模块9为液
晶显示器等，可用以显示使用状态等各种信息。
[第二实施例]
请参阅图2至图6，其中图2为本发明压电阀结构及吸气结构的立体图，图3及
图4为本发明压电阀结构及吸气结构的立体分解图，图5为本发明压电阀结构及吸气
结构的剖视图，图6为本发明压电阀结构及吸气结构的动作示意图。
如图2至图5所示，该压电阀结构1可包括一压电弹片组件11及分别设置于该压
电弹片组件11之两侧的一第一极片12及一第二极片13。以下，为本实施例针对压电
阀结构1的细部结构特征进行说明。
该压电弹片组件11可包括一弹性片111以及一压电板片112，该压电板片112可
迭设于该弹性片111背向吸气结构2的一侧，其中压电板片112对应于第一、第二极
片12、13的极性进行设置，以配合于吸气结构2的吸气方向，因此本发明并不限制压
电板片112的位置。该弹性片111为一具有可挠性而可上、下震动摆荡的片体，并且
设有数个第一气口1111。
该压电板片112为一由压电材料(PZT material)制成的板片，其迭设于该弹性片111
背向该于吸气结构2的一侧面，且该压电板片112并未覆盖该些第一气口1111。藉此，
当压电板片112因产生压电效应而带动弹性片111上、下震荡时，压电弹片组件11即
可驱动吸气结构2进行气体输送作用。弹性片111的厚度较佳但不限制为250至350
μm，压电板片112的厚度较佳但不限制为0.08至0.15mm。
该第一、第二极片12、13分别为一薄型导电片，其中第一极片12可设置于压电
弹片组件11的弹性片111朝向吸气结构2的一侧，并且设有至少一第二气口121，第
二气口121与第一气口1111相互连通，该第二气口121可位于第一极片12的中间部，
但不以此为限；第二极片13可设置于压电弹片组件11背向吸气结构2的一侧。第一
极片12与弹性片111之间可形成适当的间隙，以便于气体的流动。第一极片12的厚
度较佳但不限制为0.05至0.15mm。
该压电阀结构1可进一步包括一绝缘件14，其可由绝缘材料制成以达到绝缘效果，
但其绝缘方式并不以此为限。该绝缘件14迭设于该弹性片111以及该第二极片13之
间，以避免第二极片13透过弹性片111与第一极片12相互导通。在本实施例中，第
一极片12为一负极片，第二极片13为一正极片，但本发明并不针对极片的极性进行
限制，且上述压电弹片组件11、第一极片12及第二极片13的形状及构造，也可因应
实际需求而加以变化。在本实施例中，弹性片111与第一极片12之间形成有5至200
μm的间距，较佳为5至20μm的间距，该间距形成的方式并不限制。
该压电阀结构1可进一步包括一背板15，该背板15设置于弹性片111背向吸气
结构2的一侧，该背板15可由塑料等绝缘材料制成，该背板15的外形大致与吸气结
构2的一侧(底侧)相对应，使压电弹片组件11、第一极片12及第二极片13得以容
置于背板15与吸气结构2之间。该背板15设有至少一出气口151。背板15与吸气结
构2予以结合，其结合方式可为锁固、卡合、榫接、胶合等，本发明并不限制。背板
15与弹性片111之间可形成适当的间隙，以便于气体的流动。
该压电阀结构1可进一步包括一隔片16，该隔片16设置于弹性片111与第一极
片12之间，该隔片16中间设有一透孔161，使弹性片111与第一极片12之间可通过
透孔161而相互连通。在本实施例中，于弹性片111与第一极片12之间设置隔片16，
以使弹性片111与第一极片12之间形成该间距。
如图2至图5所示，该吸气结构2设置于压电阀结构1的一侧(上方)，该吸气结
构2可包括一上盖板21及一进气板22，其中该上盖板21可与压电阀结构1的背板15
结合，其结合方式可为锁固、卡合、榫接、胶合等，本发明并不限制，该上盖板21
可由塑料等绝缘材料制成。该进气板22夹设于上盖板21与压电阀结构1之间，以提
供吸气结构2产生负压(抽真空)的功能。进气板22的厚度较佳但不限制为0.3至1mm。
以下，为本实施例针对吸气结构2的细部结构特征进行说明。
该上盖板21为一外型对应于压电阀结构1的板片，其装设于压电阀结构1的一侧，
并设有一进气口211，该上盖板21通常另外设有一接头212，可用于连接输送管，而
第一进气口211可开设于接头212内部，以利于将气体经由输送管及接头212导入至
进气口211。该上盖板21朝向该进气板22的一侧面中间部设有一第三气口213，该第
三气口213外缘连接有数个第一流道214，且该些第一流道214向外延伸，该些第一
流道214透过第三气口213连通于进气口211。
该进气板22设置于上盖板21与压电阀结构1之间，其为一薄型板片，其可由数
片薄板相互迭加制成，也可为一体成型制成，本发明并不限制。该进气板22朝向上盖
板21的一侧面设有数个第四气口221，该进气板22的另一侧面的中间部设有一第五
气口222，该第五气口222外缘连接有数个第二流道223，且该些第二流道223向外延
伸连通于该些第四气口221，该些第四气口221分别透过该些第二流道223连通于第
五气口222。藉此，气体可分别从该些第四气口221导入，并统一从第五气口222导
出以产生一较集中的气流，以供给位于第一、第二极片12、13之间的压电弹片组件
11所需。
当第一、第二极片12、13未导通时，压电阀结构1及吸气结构2内各部气体皆呈
现平衡状态，在理想上没有因压力不均所产生的气流。请参阅图6，为本发明压电阀
结构及吸气结构的动作示意图，当第一、第二极片12、13导通时，压电弹片组件11
的压电板片112即开始带动弹性片111前、后震荡，以推动气体流动。具体而言，气
体一开始从进气口211进入上盖板21与进气板22之间，气体会从上盖板21的第三气
口213流至第一流道214，接着，气体会进入进气板22的第四气口221，气体再通过
第四气口221及第二流道223流至第五气口222，并穿过第一极片12的第二气口121。
接着，穿过第二气口121的气流会依序经过弹性片111的第一气口1111以及背板15
的出气口151向外排出。该吸气结构2能以输送管连接容器4及用于覆盖伤口的敷件，
用以提供并维持伤口处之负压环境。
[第三实施例]
请参阅图7及图8，分别为本发明压电阀结构及吸气结构另一实施例的立体分解
图及动作示意图。本实施例与上述实施例的差异仅在于，该上盖板21设有一进气口
211，该进气板22设有与进气口211相对应的一第六气口224。藉此，气体从进气口
211进入上盖板21后，气体即可直接通过进气板22的第五气口224，而后向下流动至
压电阀结构1的第一极片12的第二气口121，气体在压电阀结构1中流动的方式与上
述实施例相同，故不再赘述。
[第四实施例]
请参阅图9及图10，分别为本发明压电阀结构及吸气结构又一实施例的立体分解
图及动作示意图。本实施例与上述实施例的差异仅在于，该上盖板21设有一进气口
211，且将上述实施例的进气板22予以删除，使吸气结构2的构造更为简化。藉此，
气体从进气口211进入上盖板21后，气体即可直接向下流动至压电阀结构1的第一极
片12的第二气口121，气体在压电阀结构1中流动的方式与上述实施例相同，故不再
赘述。
本发明的压电阀结构包括一压电弹片组件及分别设置于压电弹片组件之两侧的一
第一极片及一第二极片，压电弹片组件包括一弹性片以及一压电板片，压电板片迭设
于弹性片的一侧。吸气结构设置于压电阀结构的一侧。藉此设计，共振频率可达到
20kHz以上，能达到无噪音的效果。
惟以上所述仅为本发明之较佳实施例，非意欲局限本发明的专利保护范围，故举
凡运用本发明说明书及图式内容所为的等效变化，均同理皆包含于本发明的权利保护
范围内，合予陈明。
Claims (12)
- 一种负压伤口治疗仪，其特征在于，包括：压电阀结构，包括压电弹片组件及分别设置于该压电弹片组件之两侧的第 一极片及第二极片，该压电弹片组件包括弹性片以及压电板片，该压电板片迭 设于该弹性片的一侧，该弹性片设有数个第一气口，该第一极片设有至少一个 第二气口，所述第二气口与所述第一气口相互连通；吸气结构，设置于该压电阀结构的一侧；以及微控制单元，该压电阀结构电性连接于该微控制单元。
- 根据权利要求1所述的负压伤口治疗仪，其中该第一极片设置于该压电弹片组 件的弹性片朝向该吸气结构的一侧，该第二极片设置于该压电弹片组件背向该 吸气结构的一侧。
- 根据权利要求1所述的负压伤口治疗仪，其中该压电阀结构包括绝缘件，该绝 缘件迭设于该弹性片以及该第二极片之间。
- 根据权利要求1所述的负压伤口治疗仪，其中该压电阀结构包括背板，该背板 设置于该弹性片背向该吸气结构的一侧，该背板设有至少一个出气口，该背板 与该吸气结构结合。
- 根据权利要求1所述的负压伤口治疗仪，其中该压电阀结构包括隔片，该隔片 设置于该弹性片与该第一极片之间，该隔片中间设有透孔。
- 根据权利要求1所述的负压伤口治疗仪，其中该吸气结构包括上盖板及进气板， 该上盖板与该压电阀结构结合，该进气板夹设于该上盖板与该压电阀结构之间， 该上盖板设有进气口。
- 根据权利要求6所述的负压伤口治疗仪，其中该上盖板朝向该进气板的一侧面 中间部设有第三气口，该第三气口外缘连接有数个第一流道，该些第一流道透 过该第三气口连通于该进气口。
- 根据权利要求7所述的负压伤口治疗仪，其中该进气板朝向该上盖板的一侧面 设有数个第四气口，该进气板的另一侧面的中间部设有第五气口，该第五气口 缘连接有数个第二流道，该些第四气口分别透过该些第二流道连通于该第五气 口。
- 根据权利要求6所述的负压伤口治疗仪，其中该进气板设有与该进气口相对应 的第六气口。
- 根据权利要求1所述的负压伤口治疗仪，其中该吸气结构包括上盖板，该上盖 板与该压电阀结构结合，该上盖板设有进气口。
- 根据权利要求1所述的负压伤口治疗仪，其中进一步包括容器及用于侦测该容 器内液体液位的传感器，该容器以输送管或直接连接于该吸气结构，该传感器 电性连接于该微控制单元。
- 一种负压伤口治疗仪，其特征在于，包括：压电阀结构，包括压电弹片组件及分别设置于该压电弹片组件之两侧的第 一极片及第二极片，该压电弹片组件包括弹性片以及压电板片，该压电板片迭 设于该弹性片的一侧；吸气结构，设置于该压电阀结构的一侧；以及微控制单元，该压电阀结构电性连接于该微控制单元。
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