Airtight applicator

Abstract

The utility model discloses an airtight applicator which is helpful for preventing gas from directly entering the applicator to influence a probe of a medical instrument and reducing gas permeation into the applicator through a shell material of the applicator, thereby being helpful for prolonging the shelf life of the medical instrument. The airtight applicator is used for applying an implantable medical device to a human body and comprises a shell part, an exposed movable part and a detachable part, the shell part is provided with an upper opening and a lower opening, the exposed movable part is arranged on the upper opening, the exposed movable part moves relative to the shell part during application operation, and the detachable part is arranged on the shell part. The detachable part is detachably arranged at the lower opening, the upper opening is sealed between the shell part and the exposed movable part through an upper sealing structure, and the lower opening is sealed between the shell part and the detachable part through a lower sealing structure.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an airtight applicator. Background Art

[0002] Body fluid testing is a commonly used medical testing method. Many medical devices for testing body fluids need to be implanted into the skin using an applicator, and the probe of the medical device comes into contact with the body fluid to detect and transmit signals. For example, when using a medical device for continuous glucose monitoring (CGM), the detection probe needs to pierce the skin with the help of a guide needle and be implanted subcutaneously. The guide needle is then removed, leaving the probe part subcutaneously for blood glucose testing. This implantation process requires the assistance of an applicator for the medical device.

[0003] All or part of the medical device is usually installed inside the applicator before leaving the factory, that is, the medical device is fixed inside the applicator and provided to the user. When the user uses it, by applying thrust to the applicator or triggering the trigger switch of the applicator, the applicator will push the medical device to the user's skin. During this process, the guide needle of the medical device pierces the skin and enters the subcutaneous tissue with the probe. When the medical device is close to the skin and the probe has reached the corresponding position, the applicator stops pushing forward and releases the medical device. The internal structure of the applicator removes the guide needle from the skin and detaches from the medical device, thus completing the above-mentioned implantation process.

[0004] Figure 1A It is a schematic diagram of the structure of a medical device for body fluid detection in the prior art; Figure 1B yes Figure 1A Schematic diagram of the disassembled state of the medical device shown. Figure 1A and Figure 1B As shown, the medical device 2 is mainly composed of three parts: an integrated guide needle 21, a device body 22, and a probe 23. The integrated guide needle 21 passes through the device body and wraps around the probe 23. During the implantation process, the probe 23 is implanted subcutaneously, and then the guide needle 21 is withdrawn by itself, leaving the probe 23 subcutaneously.

[0005] FIG. 2A to FIG. 2C Schematic diagram of the structure of an applicator in the prior art (the sealing structure in the embodiment of the present invention is also added). Generally speaking, the applicator usually has a built-in fixed component, a built-in moving component, and a driver, wherein the built-in fixed component is connected to the built-in moving component before the applicator is triggered, the built-in moving component is used to move the medical device from the inside of the applicator to the skin, and the driver is used to provide a driving force for the movement of the built-in moving component. For the needle withdrawal action, at the later stage of the implantation process, after the moving seat brings the medical device to the skin, the elastic arm 150 on the moving seat (see Fig.9A ) without inner housing retaining ring 130 blocking (see Figure 8C ), opens upward under the elastic force of the needle withdrawal spring, and the needle withdrawal seat detaches upward due to the force of the needle withdrawal spring, taking away the guide needle; then the applicator can be removed, leaving the medical device on the skin. The above is the basic operating principle of the applicator in the prior art.

[0006] During the storage of existing applicators, air can flow into medical devices; however, for some probes, if they are in contact with air for a long time during the long shelf life, the substances used for detection on the probes will change in physical properties, resulting in malfunction or failure. For example, oxygen or water vapor will gradually change the enzyme or membrane on the probe, resulting in poor or no detection effect. Therefore, a new applicator is needed. Utility Model Content

[0007] In view of this, the utility model proposes an airtight applicator, which helps prevent gas from directly entering the applicator and affecting the medical device probe, and reduces the penetration of gas into the applicator through the applicator shell material, thereby helping to improve the shelf life of the medical device.

[0008] The utility model provides the following technical solutions:

[0009] An airtight applicator is used to apply an implantable medical device to a human body, the applicator comprising a shell component, an exposed movable component, and a detachable component, wherein the shell component has an upper opening and a lower opening, the exposed movable component is arranged at the upper opening, the exposed movable component moves relative to the shell component during an application operation, the detachable component is arranged at the lower opening in a detachable manner, the upper opening is sealed between the shell component and the exposed movable component by an upper sealing structure, and the lower opening is sealed between the shell component and the detachable component by a lower sealing structure.

[0010] Optionally, the upper sealing structure includes an upper annular sealing groove and an upper sealing ring; the shell component has a sealing side wall, which surrounds the upper opening of the shell component; the outer circumference or inner circumference of the exposed movable component is in contact with the sealing side wall; the upper annular sealing groove is arranged on the sealing side wall, or on the outer circumference or inner circumference of the exposed movable component; the upper sealing ring is arranged in the upper annular sealing groove, and the upper sealing ring is squeezed when the two are in contact, thereby forming a seal for the upper opening between the shell component and the exposed movable component.

[0011] Optionally, the exposed movable part is a button, which is used to trigger the applying operation when pressed by an external force.

[0012] Optionally, the lower sealing structure includes a lower annular sealing groove and a lower sealing ring; the outer circumferential surface of the detachable component and the inner wall of the lower opening of the shell component are in contact with each other and one of them is provided with the lower annular sealing groove, or the inner circumferential surface of the detachable component or the outer wall of the lower opening of the shell component are in contact with each other and one of them is provided with the lower annular sealing groove; the lower sealing ring is arranged in the lower annular sealing groove, and the lower sealing ring is squeezed when they are in contact with each other, thereby forming a seal for the lower opening between the shell component and the detachable component.

[0013] Optionally, the detachable component and the shell component are connected by threads.

[0014] Optionally, the detachable component is a bottom cover for covering the lower opening.

[0015] Optionally, the cross-sections of the upper sealing ring and the lower sealing ring are circular, and the material is EPDM rubber.

[0016] Optionally, the shell component, the exposed movable component, and the detachable component are made of plastic.

[0017] Optionally, the plastic is polypropylene.

[0018] Optionally, the shell component is a housing of the applicator.

[0019] Optionally, anti-tampering labels are pasted on the side surfaces of the shell component and the side surfaces of the bottom cover, and the anti-tampering labels can increase the connection force between the outer shell and the bottom cover; a weak portion is provided in the middle of the anti-tampering label, and when the outer shell and the bottom cover are subjected to opposite torques, the anti-tampering label is torn off at the weak portion, so that the portion originally pasted on the side surface of the outer shell continues to remain on the side surface of the outer shell; and the portion originally pasted on the side surface of the bottom cover continues to remain on the side surface of the bottom cover.

[0020] Optionally, it also includes a built-in fixing component, a built-in moving component, and a driver, wherein: the built-in fixing component is connected to the built-in moving component before the applicator is triggered; the built-in moving component is used to move the medical device from the inside of the applicator to the skin, and the driver is used to provide driving force for the movement of the built-in moving component.

[0021] Optionally, the built-in fixed component is an inner shell; the built-in moving component is a moving seat; the driver is a driving spring; the inner shell has at least one cantilever with a buckle position, which is used to hook the moving seat by the buckle position before the applicator is triggered; the moving seat has at least two rotary arms for clamping medical devices; the driving spring is located between the inner shell and the moving seat.

[0022] Optionally, a pressing surface is provided on the button, and the pressing surface is exposed to the applicator; at least one trigger rib is also provided under the button; after the bottom cover is removed, when the pressing surface is pressed downward by external force, the trigger rib moves downward and can contact the cantilever of the inner shell; the button continues to move downward, and the force is applied to force the cantilever to open laterally, and when the cantilever buckle no longer hooks the moving seat, the moving seat is pushed downward by the driving spring.

[0023] Optionally, the pressing surface is provided with a pressing mark for the user to identify the pressing position so as to provide the external force.

[0024] Optionally, at least one anti-touch rib is provided on the bottom cover; a lower support arm is provided below the trigger rib; an outer support rib is provided on the periphery of the arm of the inner shell; when the bottom cover and the outer shell are connected, the inner side of the anti-touch rib blocks the outer support rib, thereby preventing the cantilever of the inner shell from opening, and the upper end of the anti-touch rib blocks the lower support arm, thereby preventing the trigger rib from triggering downward.

[0025] Optionally, a gas absorbing component is provided in the bottom cover.

[0026] According to the technical solution of the utility model, the periphery of the applicator is composed of an outer shell component, an exposed movable component, and an exposed detachable component; a movable sealing structure is provided between the outer shell component and the exposed movable component, and between the outer shell component and the exposed detachable component, so as to form an overall airtightness of the periphery. The outer shell component is an outer shell, the exposed movable component is a button, the exposed detachable component is a bottom cover, an upper sealing structure is provided between the outer shell and the button, and a lower sealing structure is provided between the outer shell and the bottom cover, which together form an overall seal of the periphery to prevent gas from directly entering the applicator and affecting the medical device. In addition, the utility model is provided with an anti-mis-triggering structure, which can ensure that the applicator will not be triggered unnecessarily due to vibration, impact, and accidental touching of the button as long as the bottom cover is not opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] For the purpose of illustration and not limitation, the present invention will now be described according to its preferred embodiments, in particular with reference to the accompanying drawings, in which:

[0028] Figure 1A It is a schematic diagram of the structure of a medical device for body fluid detection in the prior art;

[0029] Figure 1B yes Figure 1A a schematic diagram of the exploded state of the medical device shown;

[0030] FIG. 2A to FIG. 2C is a schematic diagram of the structure of an applicator in the prior art;

[0031] Figure 3AIt is a schematic diagram of the main structure of the applicator in the embodiment of the utility model;

[0032] Figure 3B It is a schematic diagram of the exploded state of the main components of the applicator in the embodiment of the utility model;

[0033] Figure 4A It is a schematic diagram of the first sealing method of the embodiment of the utility model;

[0034] Figure 4B and Figure 4C They are schematic diagrams of an upper sealing structure and a lower sealing structure of a first sealing method in an embodiment of the utility model;

[0035] Figure 5A It is a schematic diagram of a second sealing method of an embodiment of the utility model;

[0036] Figure 5B and Figure 5C They are schematic diagrams of an upper sealing structure and a lower sealing structure of a second sealing method in an embodiment of the utility model;

[0037] Fig. 6A is a schematic diagram of the appearance of the applicator in the embodiment of the utility model;

[0038] Figure 6B This is a schematic diagram of the state where the housing and the bottom cover of the applicator in the embodiment of the utility model are separated

[0039] Figure 7 It is a schematic diagram of the structure of the key in the embodiment of the utility model;

[0040] FIG. 8A to FIG. 8C is a schematic diagram of the inner shell structure of the applicator in the embodiment of the utility model;

[0041] Fig.9A and Fig. 9B It is a schematic diagram of the structure of the moving seat of the applicator in the embodiment of the utility model;

[0042] FIG. 10A to FIG. 10C is a schematic diagram of the implantation process of the applicator according to the embodiment of the utility model;

[0043] FIG. 11A to FIG. 11C It is a schematic diagram of the anti-mistriggering structure of the applicator according to an embodiment of the utility model.

[0044] In the figure: 1, applicator; 10, label; 11, shell; 111, upper opening; 112, lower opening; 113, elastic side wall of shell; 114, airtight side wall of shell; 115, sealed side wall of shell; 116, rubber ring groove of shell; 12, button; 121, button pressing surface; 122, pressing mark; 123, trigger rib; 1231, trigger inclined surface; 124, lower support arm of button; 125, rubber ring groove of button; 126, sealed side wall of button; 13, inner shell; 130, inner shell retaining ring; 131, inner shell cantilever; 1311, deformation inclined surface; 1312, inner shell cantilever Buckle position; 132, outer supporting ribs of inner shell; 14, needle withdrawal seat; 15, moving seat; 150, elastic arm; 151, hanging buckle surface of moving seat; 152, swing arm of moving seat; 1521, swing arm hook; 16, bottom cover; 161, anti-touch ribs of bottom cover; 1611, inner blocking surface of bottom cover; 1612, upper blocking surface of bottom cover; 162, elastic side wall of bottom cover; 163, sealing side wall of bottom cover; 171, upper sealing ring; 172, lower sealing ring; 181, push spring; 182, needle withdrawal spring; 19, aspirator; 2, medical device; 21, guide needle; 22, device body; 23, probe. DETAILED DESCRIPTION

[0045] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Figure 3A Schematic diagram of the main structure of the applicator in the embodiment of the utility model. Figure 3A As shown, the applicator 1 is in an assembled state, with a medical device 2 arranged inside. Figure 3B is a schematic diagram of the exploded state of the main components of the applicator in the embodiment of the utility model, from Figure 3B You can see the shape of each part.

[0046] The applicator 1 is airtight, and the peripheral parts play a sealing role. The peripheral parts mainly include a shell part, an exposed movable part and a detachable part. Figure 3A and Figure 3B The outer shell 11, the button 12 and the bottom cover 16 in the applicator 1 are provided with the button 12 at the upper opening 111 of the outer shell 11 due to the functional requirements of the applicator 1, the lower opening 112 of the outer shell 11 is used to place the medical device 2, and the bottom cover 16 covers the lower opening 112. The peripheral component also includes an upper sealing structure between the outer shell 11 and the button 12, and a lower sealing structure between the outer shell 11 and the bottom cover 16.

[0047] In addition, as the main function of the applicator 1, to apply the medical device 2 to the skin, it is also necessary to have an inner shell 13 for positioning; a moving seat 15 for driving the medical device 2 to the skin and then releasing it; a needle withdrawal seat 14 for taking away the guide needle after the implantation is completed; and a push spring 181 and a needle withdrawal spring 182 for providing implantation power and needle withdrawal power respectively. In addition, a gas absorption component can be provided in the bottom cover 16, and the gas absorption component contains a getter 19, which plays the role of absorbing water vapor or oxygen inside the applicator 1.

[0048] Figure 4A It is a schematic diagram of the first sealing method of the implementation mode of the utility model. Figure 4B and Figure 4C They are schematic diagrams of the upper sealing structure and the lower sealing structure of the first sealing method of the embodiment of the utility model. In the first sealing method, the sealing structure is an elastic tapered side wall sealing structure on the component itself, which is described in detail below.

[0049] The upper sealing structure includes a full circle of elastic side walls on the shell 11. The elastic side walls 113 of the shell have a certain taper. The key 12 also has a corresponding full circle of key sealing side walls 126, which also have a taper. The shell 11 and the key 12 are assembled as shown in the figure and form an interference fit. When the two are pressed against each other, the elastic side walls 113 of the shell will deform and open, but will tightly press the key sealing side walls 126, thereby achieving sealing.

[0050] The entire circle of elastic side walls of the lower sealing structure are on the bottom cover 16, such as the bottom cover elastic side wall 162 in Figure 3, which is also tapered. The outer shell 11 has a corresponding entire circle of tapered outer shell airtight side wall 114. The bottom cover elastic side wall 162 and the outer shell airtight side wall 114 form an interference fit. After the two are pressed against each other, the bottom cover elastic side wall 162 is deformed and tightly attached to the outer shell airtight side wall 114 to achieve sealing.

[0051] Figure 5A It is a schematic diagram of a second sealing method in an embodiment of the present utility model. Figure 5B and Figure 5C They are schematic diagrams of an upper sealing structure and a lower sealing structure of a second sealing method in an embodiment of the present utility model.

[0052] In the upper sealing structure, the key 12 has a full circle of key rubber ring groove 125, the upper sealing ring 171 is placed inside, and the housing 11 has a corresponding full circle of housing sealing side wall 115; the upper sealing ring 171 is an elastic rubber O-ring, which is squeezed by the key 12 and the housing 11 to achieve sealing. In the lower sealing structure, the housing 11 has a full circle of housing rubber ring groove 116, the lower sealing ring 172 is placed inside, and the bottom cover 16 has a corresponding full circle of bottom cover sealing side wall 163; the lower sealing ring 172 is an elastic rubber O-ring, which is squeezed by the housing 11 and the bottom cover 16 to achieve sealing.

[0053] The material selection for the applicator is explained below. Although it is a complete peripheral sealing structure, first of all, the molecular volume of gas molecules, such as water vapor, is very small; and the peripheral components are injection-molded plastic parts. Although the plastic is sealed on a macro level, the molecular gaps at the micro level are still relatively large, and the gas molecules will slowly penetrate. The air permeability of different plastics corresponding to various gases varies greatly. For example, for water vapor and oxygen, the air permeability of different plastic materials is shown in the following table. In the application scenarios of the implementation mode of the utility model, water vapor has the greatest impact on medical devices. It is necessary to select a material with a low moisture permeability, and then consider the mechanical properties and process performance. Therefore, in the implementation mode of the utility model, the preferred material for the applicator is polypropylene PP.

[0054]

[0055] In addition, in the rubber ring sealing structure at the microscopic level, there are gaps between the molecules of the rubber ring itself and between the rubber ring and the plastic for gas molecules to penetrate through, so the material of the rubber ring is also related to the air permeability of the sealing structure; low air permeability and low friction are required, so the preferred rubber ring material is EPDM material.

[0056] Selecting appropriate plastic materials and rubber ring materials can significantly reduce the air permeability; however, if the shelf life is relatively long, the accumulated air permeability is still considerable enough to affect the medical device probe, and a getter needs to be placed inside the applicator 1. In the embodiment of the utility model, the probe impact mainly comes from moisture, so a getter 19 is placed, and the preferred desiccant filled therein is a molecular sieve polymer.

[0057] The applicator can only be triggered when in use and cannot be triggered by mistake in other circumstances. The applicator 1 in the embodiment of the utility model has measures to prevent false triggering. On the one hand, a label with a weak portion is used, which plays a role similar to a seal to remind the user that the product has been opened and there is a possibility of false triggering; on the other hand, a structure to prevent false triggering is used, which is described in detail below.

[0058] Fig. 6A is a schematic diagram of the appearance of the applicator in the embodiment of the utility model, Figure 6BSchematic diagram of the shell and bottom cover of the applicator in the embodiment of the utility model are separated. In the embodiment of the utility model, the shell 11 and the bottom cover 16 of the applicator 1 are screwed together, and a label 10 for anti-disassembly is attached to the outside of the shell 11 and the bottom cover 16. Half of the label 10 is on the side of the shell 11, and half is on the side of the bottom cover 16. At the same time, it is bonded to the shell 11 and the bottom cover 16. The label 10 is also designed with an easy-to-tear opening as a weak part, such as a row of holes similar to those on a stamp, so that the label 10 is more likely to break from the middle when the shell 11 and the bottom cover 16 have relative movement. Due to the friction between the threads of the shell 11 and the bottom cover 16 and the bonding force of the label 10, the shell 11 and the bottom cover 16 of the applicator 1 are prevented from loosening during transportation and storage or when the user touches them.

[0059] When in use, the user needs to exert a certain force to unscrew the bottom cover 16 from the outer shell 11; at this time, the label 10 is also broken from the middle due to the design of easy tearing, half of which is left on the side of the outer shell 11 and the other half is left on the side of the bottom cover 16. The anti-tampering label 10 also gives the user a strong indication. If the label 10 is intact and not damaged, it means that the product is brand new and unopened; if the label 10 is damaged or broken or not aligned up and down, it means that the applicator product has been used or the seal has failed, and it cannot be used again.

[0060] More importantly, in terms of preventing false triggering, the exposed button 12 is used as the triggering component of the applicator 1. It is necessary to prevent the user from accidentally touching the button 12 and causing triggering when the bottom cover 16 is not opened but the user does not intend to use it; or the vibration and impact during transportation cause the displacement of the button 12 and cause false triggering. For this reason, a double anti-early triggering structure is designed in the embodiment of the utility model. For easy understanding, the triggering mechanism of the applicator is first explained.

[0061] The applicator is triggered by the button 12 , the inner shell 13 , and the moving seat 15 . Figure 7 It is a schematic diagram of the structure of the key in the implementation mode of the utility model. FIG. 8A to FIG. 8C is a schematic diagram of the inner shell structure of the applicator in the embodiment of the utility model, wherein Fig. 8A A perspective view showing the inner shell 13 in a top view, Figure 8B shows a longitudinal section of the inner shell 13, Figure 8C The internal structure of the inner shell 13 is shown. Fig.9A and Fig. 9B is a schematic diagram of the structure of the moving seat of the applicator in the embodiment of the utility model, wherein Fig.9A A perspective view showing a top view of the sports seat 15 is shown. Fig. 9B Shows Fig.9A The visible structure when looking up in this state is the structure at the bottom of the sports seat 15 .

[0062] The starting surface triggered by the button 12 is the button pressing surface 121, which is also the surface exposed outside the outer shell 11; in order to facilitate user identification, there is also a pressing mark 122 on the button pressing surface 121. The force and action pressed on the button pressing surface 121 will be transmitted to the trigger ribs 123 on both sides of the button 12, and each trigger rib 123 has a trigger slope 1231 at the end. The trigger slope 1231 keeps a certain distance from the inner shell 13 when the button 12 is not pressed down. When the button 12 is pressed down, it will contact the deformed slope 1311 on the inner shell cantilever 131. If the button 12 is pressed down, the inner shell cantilever 131 will rotate outward with the upper root as the axis, so that the inner shell cantilever buckle 1312 below the inner shell cantilever 131 will also open outward (horizontally in the figure).

[0063] FIG. 10A to FIG. 10C This is a schematic diagram of the implantation process of the applicator of the present invention. The black arrows in the figure indicate the movement direction of each component. When performing normal use, i.e. implantation, the bottom cover 16 needs to be opened first. FIG. 10A to FIG. 10C The various states Fig. 10A The user starts to press button 12 to reach the initial state. Fig. 10B State, that is, the button 12 moves downward, presses the inner shell cantilever 131 to rotate and open, and then reaches Fig. 10C In the state, the moving seat 15 is released, and the push spring 181 pushes the moving seat 15 to implant the medical device 2. The black arrow in the figure represents the direction of movement of the component. The following is an explanation in conjunction with the specific structure.

[0064] In the initial state, the moving seat 15 with the medical device 2 is hooked by the inner shell cantilever 131, and the moving seat buckle surfaces 151 on both sides are just hooked by the inner shell cantilever buckle positions 1312; and between the inner shell 13 and the moving seat 15 is a push spring 181. In the initial state, because of the obstruction of the inner shell cantilever 131, the moving seat 15 is under force but remains in a fixed position. When triggered, the inner shell cantilever 131 opens, and the inner shell cantilever buckle position 1312 is separated from the moving seat buckle surface 151. The moving seat 15 is triggered and released under the pushing force of the push spring 181, and performs implantation movement toward the skin, and the guide needle 21 of the medical device 2 with the probe 23 is implanted subcutaneously.

[0065] The above is the normal triggering and implanting process, which is based on the premise of opening the bottom cover 16. Before opening the bottom cover 16, a safety structure must be designed to ensure that the moving seat is in the initial position; under normal circumstances, whether it is vibration or impact or the button 12 is pressed, it should not cause triggering, that is, it should not cause the moving seat 15 to escape from the hook of the inner shell cantilever 131. Therefore, in the bottom cover 16, the embodiment of the utility model proposes to set two bottom cover anti-touch ribs 161, which have two functions: the first is to prevent false triggering due to vibration and impact, and this function is achieved by the bottom cover inner blocking surface 1611 of the bottom cover anti-touch rib 161; the second is to prevent false triggering due to mistaken pressing of the button 12, and this function is achieved by the bottom cover upper blocking surface 1612 of the bottom cover anti-touch rib 161. The following is combined with Fig.11A and Fig. 11B Please explain.

[0066] FIG. 11A to FIG. 11C It is a schematic diagram of the anti-mistriggering structure of the applicator according to an embodiment of the utility model. Fig.11A The internal structure of the bottom cover is shown. Fig. 11B The figure shows the state where the outer supporting rib 132 of the inner shell cooperates with the inner blocking surface 1611 of the bottom cover. Fig. 11C The state where the support arm 124 under the key and the blocking surface 1612 on the bottom cover cooperate with each other is shown. Fig. 11B As shown, when the bottom cover 16 is not opened, the bottom cover inner blocking surface 1611 on the bottom cover anti-touch rib 161 blocks the inner shell outer supporting rib 132 on the inner shell cantilever 131, so that the inner shell cantilever 131 cannot be rotated outward to open, thereby preventing vibration and impact from causing the inner shell cantilever 131 to open and release the motion seat 15. Fig. 11C As shown, the lower support arm 124 of the key is blocked by the upper blocking surface 1612 of the bottom cover anti-touch rib 161, so the key 12 cannot be pressed and cannot be triggered. Only after the bottom cover 16 is opened, the state where the inner blocking surface 1611 of the bottom cover blocks the outer support rib 132 of the inner shell, and the state where the upper blocking surface 1612 of the bottom cover blocks the lower support arm 124 of the key is released, can the applicator 1 be triggered and used normally.

[0067] According to the technical solution of the embodiment of the utility model, the periphery of the applicator is composed of a shell component, an exposed movable component, and an exposed detachable component; a movable sealing structure is provided between the shell component and the exposed movable component, and between the shell component and the exposed detachable component, so as to form an overall airtightness of the periphery. The shell component is a shell, the exposed movable component is a button, the exposed detachable component is a bottom cover, an upper sealing structure is provided between the shell and the button, and a lower sealing structure is provided between the shell and the bottom cover, which together form an overall seal of the periphery to prevent gas from directly entering the applicator and affecting the medical device. The upper sealing structure and the lower sealing structure can have two movable airtight modes, an elastic tapered side wall sealing structure or an elastic sealing ring structure, and an elastic sealing ring structure is preferred.

[0068] The applicator in the embodiment of the utility model, while being sealed, also needs to reduce the gas permeability through penetration. For the outer shell, buttons, and bottom cover, plastic materials with low air permeability must be selected. If the purpose is to reduce moisture permeability, PP material is preferred. For the upper and lower sealing structures, the sealing ring is preferably an O-ring, and the material is preferably EPDM rubber. In addition, an anti-premature triggering structure is provided in the applicator, and anti-touch ribs are provided on the bottom cover. When the bottom cover is not opened, the anti-touch ribs can prevent the cantilever of the inner shell from opening to avoid false triggering due to vibration and impact, and can also prevent the button from being pressed in advance, thereby avoiding the applicator from being triggered due to accidental touching of the button.

[0069] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An airtight applicator for applying an implantable medical device to a human body, the applicator comprising a shell component, an exposed movable component, and a detachable component, wherein: The shell component has an upper opening and a lower opening, the exposed movable component is arranged at the upper opening, the exposed movable component moves relative to the shell component during the application operation, and the detachable component is detachably arranged at the lower opening, characterized in that: The upper sealing structure is used to seal the upper opening between the shell component and the exposed movable component, and the lower sealing structure is used to seal the lower opening between the shell component and the detachable component.

2. The applicator according to claim 1, characterized in that The upper sealing structure comprises an upper annular sealing groove and an upper sealing ring; The shell member has a sealed side wall, and the sealed side wall surrounds the upper opening of the shell member; The outer circumference or inner circumference of the exposed movable part is in contact with the sealing side wall; The upper annular sealing groove is arranged on the sealing side wall, or on the outer peripheral surface or inner peripheral surface of the exposed movable part; The upper sealing ring is arranged in the upper annular sealing groove, and when the upper sealing ring is fitted, it is squeezed to form a seal for the upper opening between the shell component and the exposed movable component.

3. The applicator according to claim 1 or 2, characterized in that The exposed movable part is a button, which is used to trigger the applying operation when pressed by an external force.

4. The applicator according to claim 1, characterized in that The lower sealing structure comprises a lower annular sealing groove and a lower sealing ring; The outer circumferential surface of the detachable component and the inner wall of the lower opening of the shell component are fitted together and one of them is provided with the lower annular sealing groove, or the inner circumferential surface of the detachable component or the outer wall of the lower opening of the shell component are fitted together and one of them is provided with the lower annular sealing groove; The lower sealing ring is arranged in the lower annular sealing groove, and when the two parts are fitted together, the lower sealing ring is squeezed to form a seal for the lower opening between the shell part and the detachable part.

5. The applicator according to claim 1 or 4, characterized in that The detachable component is connected to the shell component by threaded connection.

6. The applicator according to claim 3, characterized in that The detachable component is a bottom cover, which is used to cover the lower opening.

7. The applicator according to claim 2, characterized in that The cross section of the upper sealing ring is circular and the material is EPDM rubber.

8. The applicator according to claim 4, characterized in that The cross section of the lower sealing ring is circular and the material is EPDM rubber.

9. An applicator according to claim 1, 2 or 4, characterized in that The shell component, the exposed movable component, and the detachable component are made of plastic.

10. The applicator according to claim 9, characterized in that The plastic is polypropylene.

11. The applicator according to claim 6, characterized in that The shell member is the outer shell of the applicator.

12. The applicator according to claim 11, characterized in that Anti-tampering labels are attached to the side surfaces of the shell component and the bottom cover, and the anti-tampering labels can increase the connection force between the shell and the bottom cover; A weak portion is provided in the middle of the anti-tampering label. When the outer shell and the bottom cover are subjected to opposite torques, the anti-tampering label is torn at the weak portion, so that the portion originally pasted on the side of the outer shell continues to remain on the side of the outer shell; the portion originally pasted on the side of the bottom cover continues to remain on the side of the bottom cover.

13. The applicator of claim 11, wherein: Also includes a built-in fixed component, a built-in moving component, and a driver, wherein: The built-in fixed component is connected to the built-in moving component before the applicator is triggered; The built-in moving component is used to move the medical device from the inside of the applicator to the skin, and the driver is used to provide a driving force for the movement of the built-in moving component.

14. The applicator of claim 13, wherein: The built-in fixing component is an inner shell; The built-in moving part is a moving seat; The driver is a driving spring; The inner shell has at least one cantilever with a buckle position, which is used to hook the moving seat by the buckle position before the applicator is triggered; the moving seat has at least two rotary arms for clamping the medical device; the driving spring is located between the inner shell and the moving seat.

15. The applicator of claim 14, wherein: The button is provided with a pressing surface, and the pressing surface is exposed to the applicator; At least one trigger rib is also provided below the button; After the bottom cover is removed, when the pressing surface is pressed down by external force, the trigger rib moves downward and can contact the cantilever of the inner shell; the button continues to move downward, and the force is applied to force the cantilever to open horizontally. When the cantilever buckle no longer hooks the moving seat, the moving seat is pushed downward by the driving spring.

16. The applicator of claim 15, wherein: The pressing surface is provided with a pressing mark for the user to identify the pressing position so as to provide the external force.

17. The applicator of claim 16, wherein: The bottom cover is provided with at least one anti-touch rib; A lower support arm is provided below the trigger rib; The outer periphery of the arm of the inner shell is provided with an outer supporting rib; When the bottom cover is connected to the outer shell, the inner side of the anti-touch rib blocks the outer support rib, thereby preventing the cantilever of the inner shell from opening, and the upper end of the anti-touch rib blocks the lower support arm, thereby preventing the trigger rib from triggering downward.

18. The applicator of claim 6, wherein: A gas absorbing component is arranged in the bottom cover.

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