Triggering device, defibrillation electrode and wearable defibrillator

Abstract

The utility model relates to a triggering device, a defibrillation electrode and a wearable defibrillator, the triggering device comprises a bottle opening support, a hot melting assembly and a gas storage bottle filled with compressed gas, the bottle opening support is fixedly connected to a bottle opening of the gas storage bottle, a gas outlet channel is arranged in the bottle opening support, and the gas outlet channel is communicated with an inner cavity of the gas storage bottle; the hot melting assembly is fixedly installed on the bottle opening support and used for blocking the air outlet channel. The hot melting assembly comprises a hot melting block and an electric heating piece, the electric heating piece comprises a heating end and a connector end which are connected, and the heating end is embedded in the hot melting block; the joint end extends out of the hot melting block; the defibrillation electrode comprises the trigger device. The wearable defibrillator comprises the defibrillation electrode. According to the triggering mode of the triggering device, the electric heating piece is electrified to melt the hot melting block, then compressed air in the air storage bottle can be released, pressure is provided for gel injection through the compressed air, safety is high, and triggering is stable. The defibrillation electrode and the wearable defibrillator have the same technical effects as those of the trigger device.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to a triggering device, defibrillation electrodes, and a wearable defibrillator. Background Technology

[0002] For high-risk individuals experiencing sudden cardiac death, multiple clinical studies have confirmed that implantable cardioverter-defibrillators (ICDs) can reduce the rate of sudden cardiac death. However, most patients do not meet the indications for ICD implantation. These patients mainly fall into two categories: first, those who are aware of their risk of sudden cardiac death, such as after coronary artery revascularization, newly diagnosed acute myocardial infarction, or ischemic heart disease, but do not meet the indications for ICD implantation; and second, patients with clear indications for ICD use but also contraindications for ICD implantation, such as active infection or unclear prognosis. Wearable cardioverter-defibrillators (WCDs) are primarily suitable for patients at risk of sudden cardiac death who, for various reasons, have not been able to immediately have an ICD implanted.

[0003] Wearable defibrillators (WCDs) work by delivering a high-voltage electric shock to the heart, controlling the energy to defibrillate and restore normal heartbeat. However, because they are worn continuously, dry skin or insufficient contact area between the electrodes and the patient's skin can lead to excessively high impedance. This can cause arcing or localized high temperatures at the electrode-patient contact point, potentially burning the patient's skin and resulting in insufficient defibrillation energy, leading to ineffective defibrillation and secondary injury. To reduce the impedance between the defibrillator electrodes and the patient's skin, the electrodes contain a gel and a triggering device. The triggering device applies pressure to expel the gel. Current triggering methods use a chemical reaction between substances to generate high-pressure gas, which then pressurizes the gel to expel it. This triggering method is highly dangerous and unstable. Utility Model Content

[0004] The first objective of this invention is to provide a triggering device that addresses the problem that the gel ejection triggering method in existing wearable defibrillators, which involves generating high-pressure gas through a chemical reaction between substances to compress the gel and eject it, is highly dangerous and unstable. The second objective of this invention is to provide a defibrillation electrode. The third objective of this invention is to provide a wearable defibrillator.

[0005] To achieve the aforementioned primary objective, the technical solution adopted by this utility model is as follows:

[0006] A triggering device includes a bottle neck support, a heat fusion assembly, and a gas storage cylinder containing compressed gas. The bottle neck support is fixedly connected to the bottle neck of the gas storage cylinder, and the bottle neck support has a gas outlet channel that communicates with the inner cavity of the gas storage cylinder. The heat fusion assembly is fixedly installed on the bottle neck support to block the gas outlet channel. The heat fusion assembly includes a heat fusion block and an electric heating element. The electric heating element includes a heating end and a connector end connected to each other. The heating end is embedded inside the heat fusion block, and the connector end extends out of the heat fusion block.

[0007] The present invention, employing the aforementioned technical solution, provides pressure for gel ejection through compressed gas. The triggering method is as follows: current is applied to the connector of the electric heating element, which heats the fused block, causing it to melt and opening the gas outlet channel. Compressed gas from the gas cylinder is then released through this channel. Compared to the existing wearable defibrillator's gel ejection triggering method, which uses a chemical reaction between substances to generate high-pressure gas to compress the gel and eject it, resulting in a high risk factor and unstable triggering, the present invention uses an electric heating element to melt the fused block, releasing compressed air from the gas cylinder. This provides pressure for gel ejection through compressed gas, improving safety and making the triggering more stable.

[0008] Furthermore, the bottle neck support includes a first end and a second end, the first end being fixedly connected to the bottle neck of the gas storage bottle; the bottle neck support has a receiving cavity, and the first end and the second end are respectively provided with a first vent hole and a second vent hole, the first vent hole, the receiving cavity and the second vent hole being sequentially connected to form the venting channel; the hot-melt assembly is fixedly disposed in the receiving cavity to seal the first vent hole and / or the second vent hole; the receiving cavity is provided in the bottle neck support to accommodate the hot-melt assembly, and the bottle neck support with this structure can provide protection for the hot-melt assembly.

[0009] Furthermore, the bottle neck support includes a fixed cap and an air outlet, with the first air outlet and the second air outlet respectively disposed on the air outlet and the fixed cap; the fixed cap is threadedly connected to one end of the air outlet, and the two together form the receiving cavity; the hot-melt assembly is pressed and fixed between the fixed cap and the air outlet; by setting the bottle neck support as a threaded fixed cap and air outlet, the connection is firm and reliable, and the hot-melt assembly is easy to disassemble and assemble.

[0010] Furthermore, the hot-melt assembly also includes a cap-shaped fixing support member, the top of which has a through hole; the hot-melt block is embedded in the fixing support member, and the connector end extends out of the through hole; the top of the cap of the fixing support member abuts against the fixing cover, and the through hole communicates with the second vent hole; a first sealing ring in a compressed state is provided between the bottom of the cap of the fixing support member and the vent, and the inner hole of the first sealing ring communicates with the first vent hole; the fixing support member can protect the hot-melt block from being damaged by pressure, and the first sealing ring can form a seal between the fixing support member and the vent hole to prevent gas leakage from the gas storage cylinder.

[0011] Furthermore, the bottle neck bracket is threadedly connected to the bottle neck of the gas storage cylinder. The bottle neck bracket has a pointed head. During the threaded connection of the bottle neck bracket to the bottle neck, the pointed head breaks through the sealing plate at the bottle neck, thereby connecting the inner cavity of the gas storage cylinder and the gas outlet channel. With this configuration, the gas storage cylinder can be manufactured separately during production. A sealing plate is provided at the bottle neck of the gas storage cylinder to prevent gas leakage. At the same time, the hot-melt assembly is installed after the bottle neck bracket and threadedly connected to the gas storage cylinder as a whole. There will be no gas leakage problem during the threaded connection process. This facilitates the automated production of gas storage cylinders, reduces production difficulty and instability in the production process.

[0012] Furthermore, a second sealing ring in a compressed state is provided between the bottle mouth support and the bottle mouth of the gas storage bottle; the first sealing ring can form a seal between the bottle mouth support and the bottle mouth to prevent gas leakage from the gas storage bottle.

[0013] To achieve the second objective, the present invention adopts the following technical solution:

[0014] A defibrillation electrode includes the aforementioned triggering device.

[0015] Furthermore, it also includes a reaction chamber; the reaction chamber comprises an outer cavity, an inner plate, and a bottom plate connected sequentially from top to bottom. Multiple independent deformable capsule cavities are fixed on the inner plate, and an opening is provided below any capsule cavity on the inner plate. Conductive gel is placed inside each capsule cavity. A gel outlet is provided on the bottom plate at a position corresponding to each capsule cavity, and a sealing film is provided on the gel outlet. The outer cavity, inner plate, and all capsule cavities together form a sealed cavity, and a triggering device is located within the cavity. When the triggering device is activated, compressed gas from the gas cylinder is released into the cavity. The gas compresses the capsule cavity, which in turn compresses the sealing film on the bottom plate, causing the sealing film to detach from the gel outlet and the conductive gel to spray out. Simultaneously, the reaction chamber occupies a small space, providing a better user experience for patients.

[0016] To achieve the third objective, this utility model adopts the following technical solution:

[0017] A wearable defibrillator includes a defibrillator main unit and the aforementioned defibrillation electrodes, wherein the defibrillation electrodes are electrically connected to the defibrillator main unit.

[0018] Compared with existing technologies, the advantages of this invention are as follows: the triggering method of the triggering device is to melt the hot melt block by energizing the electric heating element, which releases the compressed air in the gas cylinder. The compressed gas provides pressure for gel spraying, which improves safety and makes the triggering more stable; it is easy to automate the production of the gas cylinder, reducing the production difficulty and instability in the production process; the reaction chamber in the defibrillator occupies little space, which makes the patient's user experience better; the defibrillator and wearable defibrillator also have the same technical effects as the aforementioned triggering device. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the triggering device;

[0020] Figure 2 This is a cross-sectional view of the hot melt assembly;

[0021] Figure 3 This is a schematic diagram of the reaction chamber.

[0022] Figure 4 This is an exploded view of the reaction chamber;

[0023] Figure 5 This is a cross-sectional view of the structure in which the triggering device is installed in the reaction chamber.

[0024] The markings in the diagram are: 1-Triggering device, 11-Fixed cover, 111-Second vent, 12-Hot melt assembly, 121-Fixed support, 122-Electric heating element, 123-Hot melt block, 13-First sealing ring, 14-Vent nozzle, 141-First vent, 142-Pointed tip, 15-Second sealing ring, 16-Gas storage bottle, 2-Reaction chamber, 21-Outer chamber, 22-Inner plate, 23-Bottom plate, 231-Glue outlet, 24-Sealing film, 25-Capsule cavity. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0027] Example 1: This example provides a triggering device, such as... Figures 1-2As shown, the device includes a bottle neck support, a heat fusion assembly 12, and a gas storage cylinder 16 containing compressed gas. The bottle neck support is fixedly connected to the bottle neck of the gas storage cylinder 16, and the bottle neck support has an outlet channel that communicates with the inner cavity of the gas storage cylinder 16. The heat fusion assembly 12 is fixedly installed on the bottle neck support to block the outlet channel. The heat fusion assembly 12 includes a heat fusion block 123 and an electric heating element 122. The electric heating element 122 includes a heating end and a connector end connected to each other. The heating end is embedded inside the heat fusion block 123, and the connector end extends out of the heat fusion block 123.

[0028] The bottle neck support includes a first end and a second end. The first end is fixedly connected to the bottle neck of the gas storage bottle 16. The bottle neck support has a receiving cavity. The first end and the second end are respectively provided with a first vent hole 141 and a second vent hole 111. The first vent hole 141, the receiving cavity and the second vent hole 111 are connected in sequence to form a gas outlet channel. The hot melt assembly 12 is fixedly installed in the receiving cavity to seal the first vent hole 141 and / or the second vent hole 111.

[0029] The method of forming the bottle neck support with the above structure is not limited. In this embodiment, the bottle neck support with the above structure is formed by two parts fixedly connected together. Specifically, the bottle neck support includes a fixed cover 11 and an air outlet 14. The first air outlet 141 and the second air outlet 111 are respectively provided on the air outlet 14 and the fixed cover 11. The fixed cover 11 is threaded to one end of the air outlet 14, and the two together form a receiving cavity. The hot melt assembly 12 is pressed and fixed between the fixed cover 11 and the air outlet 14.

[0030] The hot melt assembly 12 also includes a cap-shaped fixing support 121, with a through hole on the top of the cap; the hot melt block 123 is embedded in the fixing support 121, with the connector end extending out of the through hole; the top of the cap of the fixing support 121 abuts against the fixing cover 11, and the through hole communicates with the second vent 111; a first sealing ring 13 in a compressed state is provided between the bottom of the cap of the fixing support 121 and the vent 14, and the inner hole of the first sealing ring 13 communicates with the first vent 141; in order to make it easier for the connector end to be connected to the external wire, the connector end is configured to extend upward out of the second vent 111;

[0031] The bottle neck support is threadedly connected to the bottle neck of the gas storage cylinder 16. The bottle neck support is provided with a pointed head 142. During the process of the bottle neck support being threadedly connected to the bottle neck, the pointed head 142 breaks through the sealing sheet at the bottle neck, so that the inner cavity of the gas storage cylinder 16 and the gas outlet channel are connected. A second sealing ring 15 in a compressed state is provided between the bottle neck support and the bottle neck of the gas storage cylinder 16.

[0032] The fixed support 121 can be a plastic structural component with good mechanical properties, such as PP or PC, used to accommodate the electric heating element 122 and the hot melt block 123. The electric heating element 122 can be a ceramic heating element, resistance heating wire, or other parts that can be heated to a certain temperature in a short time, used for rapid heating to cause the seal to fail and achieve the purpose of venting. The hot melt block 123 can be a material such as hot melt adhesive or structural adhesive, which will have its internal structure destroyed by heat. The heat-induced destruction of the sealing structure will open the vent and achieve the purpose of venting. The first sealing ring 13 can be made of materials such as fluororubber, silicone rubber, or nitrile rubber, and plays a sealing role after being compressed. The fixed cover 11 can be a metal structural component used to thread with the vent nozzle 14. The gas cylinder is designed to be sealed with a metal nozzle 14, which connects to the heat-sealed part while opening the cylinder, thus sealing and storing the compressed gas inside. The second sealing ring 15 can be made of fluororubber, silicone rubber, nitrile rubber, etc., and is used to seal the compressed gas after the cylinder is punctured by the tip 142 of the nozzle 14. The gas storage cylinder 16 can be a lightweight and high-strength gas cylinder made of aluminum alloy. The gas storage cylinder 16 can be manufactured and filled in a professional factory using automated equipment. It is used to store compressed gas, which can be one of the following: carbon dioxide, nitrogen, argon, etc. It is flame-retardant, non-toxic, environmentally friendly, and inexpensive and readily available.

[0033] Assembly instructions:

[0034] The electric heating element 122 is embedded inside the fixed support 121 using a heat-melting block 123 to form a heat-melting assembly 12. The heat-melting assembly 12 is then pressed against the first sealing ring 13 and fixed to one end of the gas outlet 14 using a fixing cap 11, compressing the first sealing ring 13 by 20%-40% to seal the internal compressed gas. The other end of the assembled gas outlet 14 can be connected to the gas storage bottle 16, with a second sealing ring 15 placed in between. During installation, the gas outlet of the gas storage bottle 16 will first compress the second sealing ring 15 to achieve a seal. After this, the pointed tip 142 of the gas outlet 14 will puncture the gas storage bottle 16 and release gas. The compressed gas is sealed and stored in the sealed area formed by the gas cylinder 16, the outlet 14, the second sealing ring 15, the fixed cover 11, the heat fusion assembly 12, and the first sealing ring 13. The gas cylinder 16 can be manufactured and filled by automated equipment in a professional factory. The installation and assembly of the gas cylinder 16 with the outlet 14, the second sealing ring 15, the fixed cover 11, the heat fusion assembly 12, and the first sealing ring 13 can be completed in a regular production workshop. The installation process is simple and convenient, which greatly improves the production efficiency and reduces the instability of the gas cylinder 16 during the production process.

[0035] The present invention, employing the aforementioned technical solution, provides pressure for gel ejection through compressed gas. The triggering method is as follows: current is applied to the connector of the electric heating element 122, which heats the fused block 123. The fused block 123 melts, opening the gas outlet channel, allowing the compressed gas in the gas storage cylinder 16 to be released through the outlet channel. Compared to the existing wearable defibrillator's gel ejection triggering method, which uses a chemical reaction between substances to generate high-pressure gas to compress the gel and eject it, resulting in a high risk factor and unstable triggering, the present invention uses an electric heating element to melt the fused block, releasing the compressed air in the gas storage cylinder. This provides pressure for gel ejection through compressed gas, improving safety and making the triggering more stable. Furthermore, it facilitates automated production of the gas storage cylinder, reducing production difficulty and instability during the production process.

[0036] Example 2: A defibrillation electrode, including the aforementioned triggering device 1, and further including a reaction chamber 2; as... Figures 3-5 As shown, the reaction chamber 2 includes an outer chamber 21, an inner plate 22, and a bottom plate 23 connected sequentially from top to bottom. Multiple independent deformable capsule cavities 25 are fixed on the inner plate 22. An opening is provided on the inner plate 22 below any capsule cavity 25. Conductive gel is provided inside the capsule cavity 25. A gel outlet 231 is provided on the bottom plate 23 at a position corresponding to each capsule cavity 25. A sealing film 24 is provided on the gel outlet 231. The outer chamber 21, the inner plate 22, and all the capsule cavities 25 together form a sealed chamber. The triggering device 1 is located in the chamber.

[0037] The outer cavity 21, inner plate 22, capsule cavity 25 and bottom plate 23 can be made of PET, PVC, PE and other materials by plastic welding process, or they can be bonded by adhesive. The sealing film 24 is sealed and bonded to the bottom plate 23 by adhesive, hot pressing and other methods. It is designed to be opened when a certain gas pressure is reached, and to maintain a good seal at other times.

[0038] Example 3: A wearable defibrillator includes a defibrillator main unit and the aforementioned defibrillation electrodes, which are electrically connected to the defibrillator main unit.

[0039] When in use, the defibrillator main unit sends a signal to control the electric heating pad 122 to heat up rapidly, causing the sealing structure of the heat fusion assembly 12 to open, releasing the compressed gas in the gas storage bottle 16, increasing the overall pressure of the reaction chamber 2; releasing the gel stored in the capsule chamber 25, reducing the impedance between the defibrillator electrode and the human skin, and preventing the patient from being burned by the electric arc or local high temperature at the contact point between the electrode and the patient due to excessive impedance.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trigger device, characterized by: The bottle mouth support, the hot melt assembly (12) and the gas cylinder (16) containing compressed gas, the bottle mouth support is fixedly connected to the bottle mouth of the gas cylinder (16), the bottle mouth support is provided with a gas outlet channel, the gas outlet channel is communicated with the inner cavity of the gas cylinder (16); the hot melt assembly (12) is fixedly installed on the bottle mouth support and is used for plugging the gas outlet channel; the hot melt assembly (12) comprises a hot melt block (123) and an electric heating sheet (122), the electric heating sheet (122) comprises a heating end and a joint end connected with each other, the heating end is embedded in the hot melt block (123), and the joint end extends out of the hot melt block (123).

2. The trigger device of claim 1, wherein: The bottle mouth support comprises a first end and a second end, the first end is fixedly connected with the bottle mouth of the gas cylinder (16); the bottle mouth support is provided with a containing cavity, the first end and the second end are respectively provided with a first gas outlet hole (141) and a second gas outlet hole (111), the first gas outlet hole (141), the containing cavity and the second gas outlet hole (111) are sequentially communicated to form the gas outlet channel; the hot melt assembly (12) is fixedly arranged in the containing cavity and is used for plugging the first gas outlet hole (141) and / or the second gas outlet hole (111).

3. The trigger device of claim 2, wherein: The bottle mouth support comprises a fixed cover (11) and a gas outlet nozzle (14), the first gas outlet hole (141) and the second gas outlet hole (111) are arranged on the gas outlet nozzle (14) and the fixed cover (11) respectively; the fixed cover (11) is threadedly connected to one end of the gas outlet nozzle (14), and the fixed cover (11) and the gas outlet nozzle (14) form the containing cavity; the hot melt assembly (12) is tightly fixed between the fixed cover (11) and the gas outlet nozzle (14).

4. The trigger device of claim 3, wherein: The hot melt assembly (12) further comprises a cap-shaped fixed support (121), a through hole is formed in the top of the fixed support (121); the hot melt block (123) is embedded in the fixed support (121), and the joint end extends out of the through hole; the top of the fixed support (121) abuts against the fixed cover (11), and the through hole is communicated with the second gas outlet hole (111); the first sealing ring (13) in a compressed state is arranged between the bottom of the fixed support (121) and the gas outlet nozzle (14), and the inner hole of the first sealing ring (13) is communicated with the first gas outlet hole (141).

5. The trigger device of claim 1, wherein: The bottle mouth support is threadedly connected with the bottle mouth of the gas cylinder (16), the bottle mouth support is provided with a sharp head (142), and in the process that the bottle mouth support is threadedly connected to the bottle mouth, the sharp head (142) breaks the sealing sheet at the bottle mouth, so that the inner cavity of the gas cylinder (16) is communicated with the gas outlet channel.

6. The trigger device of claim 5, wherein: The second sealing ring (15) in a compressed state is arranged between the bottle mouth support and the bottle mouth of the gas cylinder (16).

7. A defibrillation electrode characterized by: The trigger device (1) of any one of claims 1-6 is comprised.

8. The defibrillation electrode of claim 7, wherein: It also includes a reaction cavity (2); the reaction cavity (2) includes an outer cavity (21), an inner plate (22) and a bottom plate (23) connected in turn from top to bottom, a plurality of independent deformable capsule cavities (25) are fixed on the inner plate (22), an opening is arranged below any capsule cavity (25) on the inner plate (22), and a conductive gel is arranged inside the capsule cavity (25); a glue outlet (231) is arranged on the bottom plate (23) at a position corresponding to each capsule cavity (25), and a sealing film (24) is arranged on the glue outlet (231); the outer cavity (21), the inner plate (22) and all the capsule cavities (25) form a closed cavity, and the trigger device (1) is arranged in the cavity.

9. A wearable defibrillator comprising a defibrillator host, characterized by: It also includes the defibrillation electrode of any one of claims 7-8, which is electrically connected with the defibrillation instrument host.

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