Analyte sensor implantation device

Abstract

The application relates to the technical field of medical equipment, in particular to an analyte sensor implanting device. The analyte sensor implanting device comprises a shell assembly, a monitor frame, a monitor and a guide needle frame, the monitor frame is movably installed in the shell assembly; the monitor is installed on the monitor frame by means of adsorption and / or adhesion and / or interference fit; the monitor comprises an analyte sensor; the guide needle frame is arranged on the monitor frame, and a guide needle is assembled on the guide needle frame; the guide needle is used for puncturing the skin to implant the analyte sensor; since the monitor of the analyte sensor implanting device is installed on the monitor frame by means of adsorption and / or adhesion and / or interference fit, buckles do not need to be arranged on the monitor, and grooves matched with the buckles also do not need to be arranged on the monitor, the monitor is not easy to be separated from the skin of a user after being scraped after the monitor is separated from the monitor frame, and normal use of the user is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to an analyte sensor implantation device. BACKGROUND

[0002] Traditional blood glucose measurement methods are cumbersome, have deep incisions, obvious pain, and can only measure a single value. Diabetic patients cannot know their own glucose levels in real time. In order to know their glucose levels in real time, some patients choose to wear analyte sensors. Analyte sensors need to use sharp objects (introduction needles) of implantation devices to insert analyte sensors into the human body so that the analyte sensors are in contact with body fluids.

[0003] Existing implantation devices mostly include a needle helper and a monitor. The monitor is usually connected to the needle helper by a buckle. This requires a groove on the shell assembly of the monitor to cooperate with the buckle or the buckle to be arranged on the shell assembly. Since the monitor needs to be left on the skin of a user, the groove or the buckle on the monitor is easily scratched to make the monitor come off the skin of the user, thereby affecting the normal use of the user. SUMMARY

[0004] The present application provides an analyte sensor implantation device for improving the problem that the current monitor is easily scratched off the skin of a user due to the buckle connection with the needle helper.

[0005] In a first aspect, an analyte sensor implantation device is provided in an embodiment, comprising:

[0006] a shell assembly;

[0007] a monitor rack movably mounted in the shell assembly;

[0008] a monitor mounted on the monitor rack by adsorption and / or adhesion and / or interference fit; the monitor comprises an analyte sensor;

[0009] a guide needle rack arranged on the monitor rack;

[0010] and a guide needle assembled on the guide needle rack; the guide needle is used to pierce the skin to implant the analyte sensor;

[0011] the monitor comprises an applicator for applying to the skin; when the monitor and the monitor rack are separated under the action of an external force, the adhesive force between the applicator and the skin can make the monitor stay on the skin through the applicator.

[0012] Further, in an embodiment, the monitor is mounted on the monitor rack at least by magnetic adsorption.

[0013] Further, in an embodiment, the monitor is fixed on the monitor rack by a magnet, and the monitor comprises a battery, and the battery comprises a battery shell capable of being attracted to the magnet.

[0014] Further, in an embodiment, the monitor and the monitor rack have a first magnetic attraction force, and a direction of the first magnetic attraction force is the same as or opposite to a direction in which the guide needle penetrates the skin; and / or the monitor and the monitor rack have a second magnetic attraction force, and a direction of the second magnetic attraction force forms an angle greater than 0 degrees and less than 180 degrees with the direction in which the guide needle penetrates the skin.

[0015] Further, in an embodiment, the monitor is installed on the monitor rack at least by the action of electrostatic adsorption.

[0016] Further, in an embodiment, the monitor is fixed on the monitor rack by an electrostatic film, and the electrostatic film comprises an electrostatic adsorption surface and a glue surface, the glue surface is bonded to the monitor rack, and the electrostatic adsorption surface is adsorbed to the monitor, and a glue force of the glue surface is greater than an electrostatic adsorption force of the electrostatic adsorption surface.

[0017] Further, in an embodiment, the monitor is adhered to the monitor rack by glue.

[0018] Further, in an embodiment, the monitor is bonded to the monitor rack by double-sided adhesive tape, and the double-sided adhesive tape has a first glue surface and a second glue surface, the first glue surface is bonded to the monitor rack, and the second glue surface is bonded to the monitor; a bonding force of the first glue surface is greater than a bonding force of the second glue surface, so that the double-sided adhesive tape remains on the monitor rack after the monitor and the monitor rack are separated.

[0019] Further, in an embodiment, the monitor is installed on the monitor rack at least by the action of vacuum adsorption; the monitor rack has a monitor rack adsorption surface and a vacuum channel, and an opening at one end of the vacuum channel is on the monitor rack adsorption surface, and the analyte sensor implanting device comprises a sealing plug for sealing the vacuum channel.

[0020] Further, in an embodiment, the monitor rack comprises a locking structure for locking the shell assembly to the monitor rack; the shell assembly comprises an unlocking portion for contacting the locking structure to unlock; and the analyte sensor implanting device further comprises:

[0021] an implanting elastic member for applying an implanting elastic force to the monitor rack, and the implanting elastic force is used to drive the monitor rack to move towards the human body after the locking structure is unlocked.

[0022] The monitor frame further comprises a blocking structure, which blocks the guide needle frame in a direction away from the human body, so that the monitor frame can drive the guide needle frame to move in a direction close to the human body;

[0023] The shell assembly comprises a releasing structure; when the monitor frame moves to implant the analyte sensor into the human body by the guide needle, the releasing structure releases the blocking of the guide needle frame by the blocking structure;

[0024] and a needle-retraction elastic member, which is used to apply a needle-retraction elastic force to the guide needle frame, so that the guide needle frame is driven to retract the guide needle after the blocking of the guide needle frame by the blocking structure is released;

[0025] When the guide needle frame is driven by the needle-retraction elastic member to move in a direction to retract the guide needle, the guide needle frame releases the sealing of the sealing plug.

[0026] Further, in an embodiment, the sealing plug is installed on the guide needle frame, and when the guide needle frame is driven by the needle-retraction elastic member to retract the guide needle, the sealing plug is pulled out of the vacuum channel by the guide needle frame.

[0027] Further, in an embodiment, the monitor is installed on the monitor frame at least by interference fit.

[0028] Further, in an embodiment, the monitor is interference-fitted with the monitor frame through the peripheral wall surface.

[0029] According to the analyte sensor implantation device of the above-mentioned embodiments, since the monitor of the analyte sensor implantation device is installed on the monitor frame by relying on adsorption and / or adhesion and / or interference fit, no buckle needs to be arranged on the monitor, and no groove suitable for the buckle needs to be arranged, and after the monitor is separated from the monitor frame, it is not easy to be separated from the skin of the user after being scratched, which is convenient for normal use of the user. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the analyte sensor implantation device in an embodiment;

[0031] Figure 2 is a sectional view along Figure 1 A-A in the figure;

[0032] Figure 3 is a sectional view of the analyte sensor implantation device in another perspective in an embodiment;

[0033] Figure 4Structure diagram of analyte sensor implant device with protective cover and sensor cap removed for one embodiment;

[0034] Figure 5 Structure diagram of analyte sensor implant device with cover hidden for one embodiment;

[0035] Figure 6 Structure diagram of monitor rack and guide needle rack assembly for one embodiment;

[0036] Figure 7 Structure diagram of monitor rack with monitor vacuum suction for one embodiment;

[0037] Figure 8 Structure diagram of monitor rack with monitor electrostatic film adhesion for one embodiment.

[0038] Figure 9 Structure diagram of analyte sensor implant device with monitor and needle guide separated for one embodiment.

[0039] Corresponding feature name list of the reference numerals in the drawings: 1, monitor; 11, analyte sensor; 12, applicator; 13, battery; 2, needle guide; 20, shell assembly; 21, cover; 211, pressing end; 212, opening; 213, unlocking portion; 2131, unlocking arm; 214, release structure; 215, release arm; 2151, release arm slope; 22, mounting member; 221, release structure; 2211, release protrusion; 2212, protrusion slope; 2213, protrusion guide slope; 222, rack stop structure; 23, monitor rack; 231, locking structure; 2311, locking arm; 2312, hook; 2313, hook slope; 232, stop structure; 2321, bracket spring arm; 23211, bracket spring arm slope; 23212, inclined section; 23213, contact portion; 23214, contact slope; 23215, protrusion; 2322, stop portion; 233, rack body; 234, magnet; 235, monitor rack suction surface; 236, vacuum channel; 24, implant spring member; 25, guide needle rack; 251, jaw; 252, plug hole; 26, guide needle; 261, needle handle; 27, unlocking cover release structure; 28, needle return spring member; 29, protective cover; 210, sensor cap; 2101, plug; 2102, electrostatic film; 2103, cap; 3, skin.

[0040] Explanation of bracketed reference numerals in the drawings: In the bracketed reference numerals in the drawings, the feature referred to by the reference numeral in the bracket is both the feature represented by the number in the bracket and the feature represented by the number outside the bracket. DETAILED DESCRIPTION

[0041] The application will be described in further detail below with specific reference being made to the drawings. Like elements are referred to with like reference numerals throughout the various figures in the drawings. In the following description, numerous specific details are described to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the application can be practiced without these specific details. In other instances, well-known structures have not been described in detail in order to avoid obscuring the application. In the following description, the terms "couple" and "coupled" refer to an operational connection between two elements, where the elements are not necessarily directly connected to one another but are connected indirectly through one or more intermediary elements.

[0042] In addition, features, operations, or steps described in the specification can be performed in any suitable order unless otherwise specified and any order is implied by the specification described herein. Furthermore, some of the features, operations, or steps can be optional.

[0043] The serial numbers of components used herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" in the application, unless otherwise specified, include direct connection, indirect connection, and contact connection (coupling) and the like.

[0044] In one embodiment, referring to Figures 1 to 9 , the analyte sensor implanting device includes a monitor 1 and a needle helper 2, the monitor 1 includes an analyte sensor 11. The monitor 1 can be an instrument for monitoring physiological parameters of a human body.

[0045] The needle helper 2 is used to insert the analyte sensor 11 of the monitor 1 into the human body, and the analyte sensor 11 usually needs to be implanted into the human body with the help of a guide needle 26. The monitor 1 and the analyte sensor 11 can adopt any feasible existing structure, such as the analyte sensor 11 can be a sensor for detecting blood glucose of a human body, and the monitor 1 can be an instrument for monitoring blood glucose of a human body.

[0046] The needle helper includes a shell assembly 20, a monitor rack 23 movably mounted in the shell assembly 20, a guide needle rack 25 arranged on the monitor rack 23, and a guide needle 26 assembled on the guide needle rack 25, the guide needle 26 is used to pierce the skin to implant the analyte sensor 11.

[0047] The monitor 1 is installed on the monitor rack 23 by adsorption and / or adhesion and / or interference fit. The monitor 1 includes an applicator 12 for applying to the skin. When the monitor 1 is separated from the monitor rack 23 under the action of an external force, the adhesive force between the applicator 12 and the skin 3 can enable the monitor 1 to remain on the skin 3 through the applicator 12.

[0048] Generally, after the analyte sensor 11 is implanted in the human body, the needle remover 2 needs to be removed. In this application, the force between the monitor 1 and the monitor rack 23 can satisfy the following conditions: when the needle remover 2 is removed, the applicator and the skin will not be separated, and the applicator and the monitor will also not be separated, and the monitor 1 can remain on the skin through the applicator 12.

[0049] In one embodiment, the adhesive force between the applicator 12 and the skin 3 is greater than the force between the monitor 1 and the monitor rack 23, and the monitor 1 remains on the skin of the human body after the monitor 1 and the monitor rack 23 are separated. Of course, considering the factor of gravity, on the basis of being able to achieve the monitor remaining on the skin of the human body after the needle remover is removed, the adhesive force between the applicator 12 and the skin 3 can also be equal to or less than the force between the monitor 1 and the monitor rack 23.

[0050] In one embodiment, the applicator 12 is an applicator glue, and the applicator 12 is attached to the skin by adhesion.

[0051] Since the monitor 1 of the analyte sensor implantation device is fixed to the monitor rack 23 by adsorption or adhesion, no buckle needs to be provided on the monitor 1, and no groove compatible with the buckle needs to be provided. After the monitor 1 and the monitor rack 23 are separated, it is not easy to be separated from the skin of the user, which is convenient for the normal use of the user.

[0052] In one embodiment, the monitor 1 has a bonding surface, and the monitor 1 is installed on the monitor rack 23 by adsorption and / or adhesion and / or interference fit through the bonding surface. In one embodiment, the bonding surface can be a plane, a smooth curved surface, or partially a plane and partially a smooth curved surface. In one embodiment, the smooth curved surface is an outward convex curved surface.

[0053] Regarding the installation method of the monitor 1 and the monitor rack 23, in one embodiment, please refer to Figure 3 , the monitor 1 is installed on the monitor rack 23 by magnetic adsorption.

[0054] It should be understood that the installation method by magnetic adsorption includes various cases:

[0055] In one embodiment, the monitor 1 and the monitor holder 23 have a first magnetic attraction force, the direction of the first magnetic attraction force is the same as or opposite to the direction in which the guide needle 26 penetrates the skin, and the monitor 1 is attached to the monitor holder 23 by adsorption.

[0056] In another embodiment, the monitor 1 and the monitor holder 23 have a second magnetic attraction force, the direction of the second magnetic attraction force forms an angle greater than 0 degrees and less than 180 degrees with the direction in which the guide needle 26 penetrates the skin. For example, when the angle between the direction of the second magnetic attraction force and the direction in which the guide needle 26 penetrates the skin is 90 degrees, and the direction in which the guide needle 26 penetrates is vertical, the second magnetic attraction force is used to provide pressure between the monitor 1 and the monitor holder 23, and the monitor 1 and the monitor holder 23 will not separate under the action of friction. Specifically, in one embodiment, please refer to Figure 3 and Figure 9 The monitor holder 23 is fixed with a magnet 234, and the monitor 1 includes a battery 13, which includes a battery shell that can be attracted to the magnet 234. After the applicator 12 is adhered to the human skin 3, the adhesion of the applicator 12 is relatively large, and when the needle remover 2 is pulled out, the monitor 1 and the monitor holder 23 are separated. In one embodiment, the battery shell is made of a ferromagnetic material that can be attracted by the magnet.

[0057] The magnet 234 is fixed on the monitor holder 23 by magnetic attraction, and the battery is attracted by the magnet 234, so that the monitor 1 is fixed to the monitor holder 23. At the same time, because the monitor 1 has the applicator 12 at the bottom, after the monitor 1 is adhered to the skin 3, the adhesion of the applicator 12 can separate the monitor 1 from the monitor holder 23 when the needle remover is pulled out. In one embodiment, the adhesion of the applicator 12 is greater than the attraction of the magnet 234.

[0058] In another embodiment, the monitor 1 includes an instrument magnet, which is attracted to the magnet 234 to fix the monitor 1 to the monitor holder 23. Of course, in some other embodiments, the monitor 1 can be provided with an instrument magnet, and the monitor holder 23 can be provided with a magnetic member that can be attracted to the instrument magnet.

[0059] In addition to the magnetic attraction method, an electrostatic adsorption method can also be used. In one embodiment, please refer to Figure 8 The monitor 1 is electrostatically adsorbed on the monitor holder 23.

[0060] Specifically, in one embodiment, please refer to Figure 8 The monitor 1 is fixed to the monitor holder 23 by the electrostatic film 2102, the electrostatic film 2102 includes an electrostatic adsorption surface and an adhesive surface, the electrostatic film 2102 is fixed to the monitor holder 23 by the adhesive surface, and the monitor 1 is fixed by the electrostatic adsorption surface, the adhesive force of the adhesive surface is greater than the electrostatic adsorption force of the electrostatic adsorption surface.

[0061] The electrostatic film 2102 is attached to the monitor holder 23, with the adhesive surface attached to the monitor holder 23 and the electrostatic adsorption surface attached to the monitor 1. The monitor 1 is attached to the skin 3 with the applicator 12, and the adhesive force of the applicator 12 can separate the monitor 1 from the monitor holder 23 when the needle remover 2 is removed.

[0062] When the monitor 1 is separated from the monitor holder 23, the electrostatic film 2102 is also separated from the monitor 1 and remains on the monitor holder 23. In one embodiment, the adhesive force of the applicator 12 is greater than the adhesive force of the adhesive surface of the electrostatic film 2102 and also greater than the electrostatic adsorption force of the electrostatic adsorption surface of the electrostatic film 2102.

[0063] In addition to the magnetic attraction and electrostatic adsorption methods, an adhesive method can also be used. In one embodiment, the monitor 1 is attached to the monitor holder 23 by an adhesive.

[0064] Specifically, in one embodiment, the monitor 1 is attached to the monitor holder 23 by a double-sided adhesive, which has a first adhesive surface and a second adhesive surface. The first adhesive surface is attached to the monitor holder 23, and the second adhesive surface is attached to the monitor 1. The adhesive force of the first adhesive surface is greater than that of the second adhesive surface, so that when the monitor 1 is separated from the monitor holder 23, the double-sided adhesive remains on the monitor holder 23.

[0065] Using the strong and weak adhesive principle, after the monitor 1 is attached to the skin 3, the first adhesive surface is attached to the monitor holder 23, and the second adhesive surface is attached to the monitor 1. When the monitor 1 is separated from the monitor holder 23, the second adhesive surface is also separated from the monitor 1, so that the double-sided adhesive remains on the monitor holder 23. In one embodiment, the adhesive force of the applicator 12 is greater than the adhesive force of the first adhesive surface and also greater than the adhesive force of the second adhesive surface.

[0066] In addition to the above methods, in one embodiment, referring to Figure 7 the monitor 1 is fixed to the monitor holder 23 by vacuum adsorption. The monitor 1 is adsorbed to the monitor holder 23 by vacuum. The monitor holder 23 has a vacuum channel 236, and one end of the vacuum channel 236 is located on the monitor holder adsorption surface 235. The analyte sensor implantation device includes a sealing plug 2101 that blocks the vacuum channel 236. When the guide needle holder 25 is driven to move in the direction of withdrawing the guide needle 26, the sealing of the sealing plug 2101 is released, the vacuum adsorption between the monitor 1 and the monitor holder 23 is eliminated, and the monitor 1 and the monitor holder 23 can be separated.

[0067] In one embodiment, referring to Figure 7In some other embodiments, a cavity can be formed between the monitor and the monitor holder, and the monitor can be adsorbed on the monitor holder after the cavity is vacuumized.

[0068] Specifically, the seal of the sealing plug 2101 can be released by user operation or by other parts of the needle helper 2. For example, in one embodiment, please refer to Figures 2 to 7 The monitor holder 23 comprises a locking structure 231 for locking the shell assembly 20 and the monitor holder 23. Before the analyte sensor 11 implanting device is used, the relative position of the shell assembly 20 and the monitor holder 23 is locked and cannot move relative to each other. When the analyte sensor 11 needs to be implanted into the human body, the locking structure 231 needs to be unlocked. The analyte sensor implanting device further comprises an implanting elastic member for applying an implanting elastic force to the monitor holder 23, and a needle retracting elastic member. The implanting elastic force is used to drive the monitor holder 23 to move towards the human body after the locking structure is unlocked. The monitor holder 23 has an initial position and an implanting position in the active stroke. In the initial position, the monitor holder 23 is locked by the locking structure 231. In the implanting position, the guide needle 26 can implant the analyte sensor 11 into the human body. The implanting elastic member 24 is used to apply an implanting elastic force to the monitor holder 23. The implanting elastic force is used to drive the monitor holder 23 to move towards the implanting position after the locking structure 231 is released.

[0069] The shell assembly 20 comprises an unlocking part 213 for contacting the locking structure 231 to release the locking effect on the monitor holder 23. The unlocking part 213 is used to contact the locking structure 231 to release the locking effect of the locking structure 231 on the monitor holder 23, so that the monitor holder 23 moves towards the distal end under the elastic force of the implanting elastic member 24, i.e. moves towards the human body relative to the mounting member 22.

[0070] The monitor holder 23 further comprises a blocking structure 232 for blocking the guide needle holder 25 in the direction away from the human body, so that the monitor holder 23 can drive the guide needle holder 25 to move towards the human body when moving towards the implanting position, and further drive the guide needle to move into the human body.

[0071] The shell assembly 20 further comprises a releasing structure 221 for releasing the blocking of the guide needle holder 25 by the blocking structure 232 when the monitor holder 23 moves to the implanting position and the guide needle 26 implants the analyte sensor 11 into the human body. The needle retracting elastic member 28 is used to apply a needle retracting elastic force to the guide needle holder 25. The needle retracting elastic force drives the guide needle holder 25 to retract the guide needle 26 after the blocking of the guide needle holder 25 by the blocking structure 232 is released.

[0072] When the guide needle holder 25 is driven by the needle retraction elastic member 28 to move in the direction of withdrawing the guide needle 26, the guide needle holder 25 releases the seal of the sealing plug 2101.

[0073] Further, in an embodiment, referring to Figure 7 the sealing plug 2101 is installed on the guide needle holder 25, and when the guide needle holder 25 is driven by the needle retraction elastic member 28 to withdraw the guide needle 26, the sealing plug 2101 is pulled out of the vacuum channel 236 by the guide needle holder 25.

[0074] Specifically, in an embodiment, the guide needle holder 25 has a sealing plug hole 252, which is a variable-diameter hole, and the sealing plug 2101 has a cap 2103 at one end, which is in the large-diameter section of the sealing plug hole 252, and the guide needle holder 25 is stopped by the cap 2103, so that when the guide needle holder 25 withdraws the guide needle 26, the sealing plug 2101 can be pulled out.

[0075] Regarding the way to achieve vacuum adsorption, in an embodiment, the sealing plug 2101 is inserted into the needle cylinder to vacuum the gap between the monitor and the monitor holder. In an embodiment, the gap between the monitor and the monitor holder can also be vacuumed by setting a vacuum pipeline, and a one-way valve can be provided on the vacuum pipeline to prevent air leakage. In order to improve the effect of vacuum adsorption, in an embodiment, a sealing ring can be provided on the monitor holder adsorption surface 235 of the monitor holder to prevent air leakage.

[0076] In addition to the above-mentioned ways, in an embodiment, the monitor 1 is installed on the monitor holder 23 by interference fit. At this time, the monitor relies on the friction between the monitor and the monitor holder to remain fixed.

[0077] Specifically, in an embodiment, the monitor 1 is interference-fitted with the monitor holder 23 through the outer peripheral wall surface. Further, the monitor 1 is interference-fitted with the monitor holder 23 through the outer peripheral wall surface.

[0078] In an embodiment, in order to facilitate assembly, an elastic member is provided on the monitor, and the monitor is interference-fitted with the monitor holder through the elastic member, which deforms more when interference-fitted, making it easier to install. In some other embodiments, an elastic member can also be provided on the monitor holder to interference-fit with the monitor. In an embodiment, the elastic member is an elastic sleeve. Specifically, the elastic sleeve can be a rubber sleeve.

[0079] In some other embodiments, the monitor 1 and the monitor holder 23 can be fixed by any two or more of the following ways: magnetic adsorption, electrostatic adsorption, adhesive adhesion, and interference fit.

[0080] For the convenience of understanding the analyte sensor implantation device, the structure of the analyte sensor implantation device is described below. It should be understood that the mounting structure of the monitor 1 and the monitor rack 23 in the present application can be used not only for the analyte sensor implantation device described in the present application, but also for the analyte sensor implantation devices in the prior art or in the future, as long as the monitor 1 and the monitor rack 23 in the analyte sensor implantation device need to be fixed together first, and then separated after the monitor 1 is attached to the skin.

[0081] In an embodiment, please refer to Figures 2 to 6 The needle helper adopts a locking structure 231 to lock the monitor rack 23 and the shell assembly 20. After the locking structure 231 is unlocked by the unlocking part 213, under the elastic force of the implantation elastic member 24, the monitor rack 23 moves towards the human body. Under the action of the blocking structure 232, the monitor rack 23 can drive the guide needle rack 25 to move and make the guide needle 26 pierce into the human body, so as to realize the implantation of the analyte sensor 11 into the human body. Compared with the current manual pressing force control of the implantation depth of the guide needle 26, the piercing of the guide needle 26 is completed by the elastic force of the implantation elastic member 24, which reduces the requirement for manual operation force. After the guide needle 26 pierces into the human body in place, the release structure 221 on the shell assembly 20 can exert a force on the blocking structure 232 to release the blocking action of the blocking structure 232 on the guide needle rack 25. In this way, the guide needle rack 25 can move away from the human body under the action of the needle retraction elastic member 28, and then the guide needle 26 is extracted from the human body. Under the action of the implantation elastic member 24, the guide needle 26 can be inserted in place, and the release structure 221 can stably release the blocking structure 232, thereby reducing the operation difficulty of the operator.

[0082] In an embodiment, please refer to Figures 2 to 4 The needle retraction elastic member 28 is between the guide needle rack 25 and the monitor rack 23 and is always in a compressed state. In an embodiment, the implantation elastic member 24 is between the mounting part and the monitor rack 23 and is always in a compressed state. In an embodiment, the needle retraction elastic member 28 and the implantation elastic member 24 are both spiral springs. The spiral spring structure is simple and convenient to install.

[0083] In an embodiment, the release structure 221 releases the blocking of the guide needle rack 25 by the blocking structure 232 by exerting a force on the blocking structure 232. In some other embodiments, the release structure 221 can also limit the blocking structure 232. When the limitation is released, the blocking structure 232 can be automatically released by its own elastic force or under the action of the force of other components.

[0084] Further, in an embodiment, please refer to Figures 2 to 5At least part of the stop structure 232 is an elastic structure, which elastically deforms after the action force of the releasing structure 221 is removed, and the stop of the guide needle holder 25 is released. The stop structure 232 is an elastic structure, which is more convenient for the releasing structure 221 to release the stop of the guide needle holder 25 by the stop structure 232.

[0085] Regarding the form of the stop structure 232, in one embodiment, please refer to Figure 6 The stop structure 232 includes a bracket elastic arm 2321 and a stop portion 2322 on the bracket elastic arm 2321, and the stop portion 2322 is used to stop the guide needle holder 25.

[0086] Regarding the form of the stop structure 232, in one embodiment, please refer to Figure 6 The monitor holder 23 includes a holder body 233, one end of the bracket elastic arm 2321 is a free end that can move when the bracket elastic arm 2321 is deformed, and the other end is a connecting end connected to the holder body 233.

[0087] Regarding the form of the stop structure 232, in one embodiment, please refer to Figures 2 to 6 The releasing structure 221 deforms the bracket elastic arm 2321 by applying an action force to the bracket elastic arm 2321, so as to release the stop relationship between the stop portion 2322 and the guide needle holder 25. In some other embodiments, in addition to using the bracket elastic arm 2321, the stop structure 232 can also include a rigid bracket and an elastic piece fixed on the rigid bracket, the elastic piece stops the guide needle holder 25, and the stop structure 232 releases the stop of the elastic piece by deforming the elastic piece. In some other embodiments, the stop structure 232 can also be other forms in addition to the elastic structure, and the stop structure 232 can include a movable locking tongue, which stops the guide needle holder 25, and the stop relationship between the locking tongue and the guide needle holder 25 is released after the locking tongue is retracted by the releasing structure 221.

[0088] Further, in one embodiment, please refer to Figures 3 to 6 The direction in which the guide needle 26 penetrates into the human body is a first direction, the bracket elastic arm 2321 extends along the first direction, and the bracket elastic arm 2321 includes a contact portion 23213, which has a contact slope surface 23214 used to contact the releasing structure 221, and the releasing structure 221 deforms the bracket elastic arm 2321 by abutting against the contact slope surface 23214. Specifically, in one embodiment, the bracket elastic arm 2321 includes a straight arm and a protrusion 23215 on the straight arm, the straight arm extends along the first direction, the protrusion 23215 is on one side of the straight arm, and the contact slope surface 23214 is on the protrusion 23215. In some other embodiments, in addition to using the straight arm, the bracket elastic arm 2321 can also use other types in other forms, such as a curved elastic arm or an inclined elastic arm.

[0089] Regarding the releasing structure 221, in an embodiment, please refer to Figure 2 and Figure 4 The releasing structure 221 includes a releasing protrusion 2211 on the shell assembly 20, the releasing protrusion 2211 has a protrusion slope surface 2212 for cooperating with the contact slope surface 23214 to make the bracket elastic arm 2321 elastically deform in a direction away from the releasing protrusion 2211.

[0090] Further, in an embodiment, the proximal end of the needle holder 2 is the operation end, and the distal end is the human body contact end for contacting the human body. It should be noted that the distal end and the proximal end in the present application are described based on the operator's operation position, wherein the proximal end is the end close to the operator, and the distal end is the end away from the operator.

[0091] In an embodiment, please refer to Figures 2 to 5 The proximal end of the bracket elastic arm 2321 is the free end, and the distal end of the bracket elastic arm 2321 is the connecting end. The stop portion 2322 is close to the contact portion 23213 and away from the connecting end. When the bracket elastic arm 2321 deforms, the stop portion 2322 away from the connecting end can make the stop portion 2322 have a larger range of motion and be easier to release the stop of the guide needle holder 25. In some other embodiments, the stop portion 2322 can also be composed of the contact portion 23213.

[0092] Specifically, in an embodiment, please refer to Figure 5 and Figure 6 In order to facilitate the design of the structure, the bracket elastic arm 2321 has a set width, and the contact portion 23213 and the stop portion 2322 are arranged apart along the circumference of the monitor holder 23 or connected. In some other embodiments, the contact portion 23213 and the stop portion 2322 can also be arranged side by side along the circumference of the monitor holder 23 only, and in the extension direction of the bracket elastic arm 2321, the contact portion 23213 and the stop portion 2322 are at the same position.

[0093] In an embodiment, please refer to Figure 2 The shell assembly 20 includes the mounting member 22 and the shell 21, the proximal end of the shell 21 is the pressing end 211 for pressing operation, and the distal end has the opening 212 for facing the human body. The mounting member 22 and the monitor holder 23 are movably assembled in the shell 21. The unlocking portion 213 is on the shell 21, and the releasing structure 221 is on the mounting member 22 and / or the shell 21.

[0094] In an embodiment, please refer to Figures 2 to 5The mounting member 22 is movably assembled in the housing 21. The monitor rack 23 is movably assembled on the mounting member 22. The monitor rack 23 is provided with an unlocking shell retaining structure 27 for exerting a retaining force on the housing 21 to retain the position of the housing 21. In some other embodiments, the unlocking shell retaining structure 27 can also be on the mounting member 22. In some other embodiments, the number of the unlocking shell retaining structure 27 can be more than two, part of which is on the mounting member 22 and part of which is on the monitor rack 23.

[0095] The housing 21 is provided with a retaining release structure 221 which is in contact with the unlocking shell retaining structure 27 after the housing 21 is pressed to overcome the retaining force of the unlocking shell retaining structure 27 on the housing 21, so that the unlocking portion 213 can unlock the locking structure 231. The retaining force is selected to a reasonable range according to the pressing force of the housing 21. The unlocking shell retaining structure 27 releases the retaining of the housing 21 after the housing 21 is pressed and the retaining force is overcome, which can prevent accidental touch.

[0096] In one embodiment, please refer to Figure 2 The unlocking shell retaining structure 27 is at the proximal end of the monitor rack 23. In this way, the unlocking shell retaining structure 27 and the housing 21 can interact with each other. In some other embodiments, the unlocking shell retaining structure 27 can also be arranged at the distal end of the housing 21.

[0097] The stop structure 232 includes a bracket spring arm 2321 and a stop portion 2322 on the bracket spring arm 2321, and the stop portion 2322 is used to stop the guide needle rack 25. The monitor rack 23 includes a rack body 233. One end of the bracket spring arm 2321 is a free end which can move when the bracket spring arm 2321 is deformed, and the other end is a connecting end connected to the rack body 233.

[0098] The release structure 221 deforms the bracket spring arm 2321 by exerting a force on the bracket spring arm 2321 to release the stop relationship between the stop portion 2322 and the guide needle rack 25. The bracket spring arm 2321 forms at least part of the unlocking shell retaining structure 27. The bracket spring arm 2321 extends from the distal end to the proximal end of the monitor rack 23, and the bracket spring arm 2321 retains the position of the housing 21 by abutting against the housing 21. The housing 21 deforms the bracket spring arm 2321 by pressing, and releases the abutting relationship between the bracket spring arm 2321 and the housing 21.

[0099] In one embodiment, please refer to Figures 2 to 5 The bracket spring arm 2321 extends from the distal end to the proximal end of the monitor rack 23, and the bracket spring arm 2321 retains the position of the housing 21 by abutting against the housing 21. In some other embodiments, in addition to the bracket spring arm 2321, the unlocking shell retaining structure 27 can also use a spring sheet.

[0100] Further, in one embodiment, referring to Figure 2 The releasing structure 214 includes a releasing arm 215, which is inside the housing 21 and extends from the proximal end of the housing 21 to the distal end of the housing 21. The distal end of the releasing arm 215 abuts against the proximal end of the bracket arm 2321. Both the distal end of the releasing arm 215 and the proximal end of the bracket arm 2321 have a slope. The slope of the distal end of the releasing arm 215 is a releasing arm slope 2151, and the slope of the proximal end of the bracket arm 2321 is a bracket arm slope 23211. Both the releasing arm slope 2151 and the bracket arm slope 23211 are used to guide the bracket arm 2321 to deform after the housing 21 is pressed, release the abutting relationship between the releasing arm 215 and the bracket arm 2321, and thus release the holding effect of the unlocking shell holding structure 27. In one embodiment, the releasing arm 215 is a rigid arm. In some other embodiments, both the bracket arm 2321 and the releasing arm 215 are elastic arms.

[0101] In some other embodiments, only the distal end of the releasing arm 215 has the releasing arm slope 2151, and the proximal end of the bracket arm 2321 has a flat surface that contacts the releasing arm slope 2151, and the flat surface is perpendicular to the direction of movement of the monitor bracket 23. In some other embodiments, only the proximal end of the bracket arm 2321 has the bracket arm slope 23211. It should be noted that the slope in the present application refers to a surface with a certain slope in the direction of movement of the monitor bracket 23, which can be an inclined surface, a convex surface, or a concave surface.

[0102] In one embodiment, referring to Figures 2 to 6 The bracket arm 2321 bends and deforms to the first side of the bracket arm 2321 when the abutting relationship with the housing 21 is released, and bends and deforms to the second side of the bracket arm 2321 when the blocking relationship with the guide needle bracket 25 is released. The first side and the second side are opposite sides of the bracket arm 2321.

[0103] Specifically, in one embodiment, referring to Figures 2 to 6 The bracket arm 2321 includes an inclined section 23212, and one end surface of the inclined section 23212 is the bracket arm slope 23211. The bracket arm slope 23211 is used to abut against the releasing structure 221 after the housing 21 is pressed, so that the bracket arm 2321 deforms.

[0104] In one embodiment, referring to Figure 2In the direction from the distal end to the proximal end of the bracket elastic arm 2321, the inclined section 23212 gradually inclines to the distal end of the holding release arm 215. Thus, when the holding release arm 215 is pressed against the inclined section 23212 to press the slope 23211 of the bracket elastic arm, a greater force is required to elastically deform the bracket elastic arm 2321, thereby releasing the holding of the bracket elastic arm 2321 on the shell 21.

[0105] In an embodiment, referring to Figure 2 , in order to facilitate the release of the locking of the monitor rack 23, the minimum force required by the holding release structure 214 to release the holding of the unlocking shell holding structure 27 on the shell 21 is the first force, and the minimum force required by the unlocking part 213 to release the locking of the locking structure 231 on the monitor rack 23 is the second force, the first force is greater than the second force. Thus, the anti-misoperation effect can be improved, and the monitor rack 23 can be more smoothly unlocked, and the overall operation is more smooth.

[0106] In some other embodiments, according to actual needs, the first force can also be less than or equal to the second force.

[0107] In an embodiment, referring to Figure 2 and Figure 5 , the number of the unlocking shell holding structure 27 is at least two, the number of the holding release structure 214 is at least two, and the number of the unlocking part 213 is at least two. The holding release structure 214 and the unlocking part 213 are arranged alternately in the circumferential direction of the shell 21. Specifically, in an embodiment, the number of the holding release arm 215 is two or more, the unlocking part 213 is the unlocking arm 2131, the unlocking arm 2131 extends from the proximal end of the shell 21 to the distal end of the shell 21, the number of the unlocking arm 2131 is two or more, and the unlocking arm 2131 and the holding release arm 215 are arranged alternately in the circumferential direction of the shell 21.

[0108] Further, in an embodiment, referring to Figure 2 , the unlocking arm 2131 extends from the proximal end of the shell 21 to the distal end of the shell 21, the unlocking arm 2131 releases the locking by pressing against the locking structure 231, and the length of the unlocking arm 2131 is not less than the length of the holding release arm 215. Thus, the pressing relationship between the holding release arm 215 and the bracket elastic arm 2321 is released, and the unlocking arm 2131 is unlocked to the locking structure 231.

[0109] Further, in an embodiment, referring to Figure 2 and Figure 5The locking structure 231 comprises a locking arm 2311 extending from the distal end of the monitor rack 23 to the proximal end, and the proximal end of the locking arm 2311 is provided with a hook 2312. The hook 2312 is clamped on the mounting member 22 to lock the monitor rack 23 and the mounting member 22. The unlocking portion 213 deforms the locking arm 2311 by abutting against the hook 2312 to separate the hook 2312 from the mounting member 22.

[0110] Specifically, please refer to Figure 2 In order to facilitate the unlocking of the hook 2312, the hook 2312 is provided with a hook slope surface 2313, and the end of the unlocking arm 2131 is provided with an unlocking arm slope surface. Through the cooperation of the unlocking arm slope surface and the hook slope surface 2313, the hook 2312 can be separated from the mounting member 22 by applying a force to the hook 2312.

[0111] Further, in an embodiment, please refer to Figures 2 to 5 The mounting member 22 is sleeve-shaped, and the monitor rack 23 is installed in the mounting member 22, and the mounting member 22 can guide the monitor rack 23 to move linearly. In this way, the rotation of the monitor rack 23 can be prevented, and the movement of the monitor rack 23 is smoother.

[0112] In an embodiment, please refer to Figures 2 to 5 The mounting member 22 is sleeve-shaped, and under the action of the needle returning elastic member 28, the guide needle rack 25 and the monitor rack 23 can be pre-assembled to form a pre-assembled body, the pre-assembled body is inserted into the mounting member 22 from the distal end of the mounting member 22, and the implanting elastic member 24 is press-fitted between the monitor rack 23 and the mounting member 22.

[0113] Further, in an embodiment, please refer to Figure 5 and Figure 6 The number of the bracket elastic arms 2321 is at least two, and in the direction from the distal end to the proximal end of the bracket elastic arms 2321, the inclined sections 23212 gradually incline to the center line where the guide needle 26 is located. In this way, the bracket elastic arms 2321 can be conveniently inserted into the mounting member 22.

[0114] In order to further facilitate the installation of the monitor rack 23, in an embodiment, please refer to Figure 2 The relief 2211 has a relief guide slope surface 2213 in addition to the relief slope surface 2212, and the relief guide slope surface 2213 is arranged opposite to the relief slope surface 2212. In this way, when the monitor rack 23 is installed in the mounting member 22, the relief guide slope surface 2213 can guide the bracket elastic arms 2321 to be inserted into the mounting member 22.

[0115] Further, in an embodiment, please refer to Figure 2 and Figure 5The shell assembly 20 has a needle rack stop structure 222 for stopping the guide needle rack 25 to define the maximum stroke of the guide needle rack 25 moving towards the operating end. In this way, the moving range of the guide needle rack 25 can be defined as required.

[0116] Specifically, in one embodiment, after the lock between the monitor rack 23 and the shell assembly 20 is released, the monitor rack 23 moves towards the human body. At this time, the stop structure 232 does not contact the guide needle rack 25 until the monitor rack 23 moves a first distance. Then, the stop structure 232 stops the guide needle rack 25, driving the guide needle rack 25 to move towards the distal end. This movement can be suitable for the case where the needle handle 261 of the guide needle 26 is relatively long, and the needle handle 261 still protrudes from the monitor 1 after passing through the monitor 1. The side of the monitor 1 towards the human body is provided with an applicator 12. After the analyte sensor 11 is implanted into the human body by the guide needle 26, the applicator 12 contacts the skin 3 of the human body, fixing the monitor 1 to the skin 3 of the human body. When the guide needle 26 penetrates into the human body, if the needle handle 261 of the guide needle 26 protrudes from the side of the monitor 1 towards the human body, the needle handle 261 of the guide needle 26 will be in contact with the skin 3 of the human body, affecting the adhesion of the monitor 1 to the human body. In order to better adhere the monitor 1 to the skin 3 of the human body, in one embodiment, the length of the first distance is equal to the length of the needle handle 261 protruding from the monitor 1, or the first distance is greater than the length of the needle handle 261 protruding from the monitor 1. In this way, when the guide needle 26 is inserted into the human body, the needle handle 261 is flush with the side of the monitor 1 towards the human body or is retracted into the monitor 1 by a distance.

[0117] Further, in one embodiment, referring to Figure 3 and Figure 6 When the monitor rack 23 is in the initial position, although the stop structure 232 of the monitor rack 23 does not stop the guide needle rack 25, the needle return spring 28 is still in the compressed state and is between the guide needle rack 25 and the monitor rack 23. In this way, the guide needle rack 25 is not easy to shake and has better stability. Due to the stopping effect of the needle rack stop structure 222, the guide needle rack 25 and the stop structure 232 of the monitor rack 23 remain in a state of being spaced apart and not in contact.

[0118] Specifically, in one embodiment, referring to Figure 3 and Figure 6 The needle rack stop structure 222 stops the guide needle rack 25, so that the needle return spring 28 remains in the compressed state. In one embodiment, the needle rack stop structure 222 is a stop block. In some other embodiments, the needle rack stop structure 222 can also be a stop step or a stop groove, etc.

[0119] In one embodiment, referring to Figures 2 to 6The sensor cap 210 can be installed on the needle handle 261 through the monitor 1. The sensor cap 210 can be installed on the needle handle 261 through screwing, clamping, magnetic attraction or any other feasible way. The sensor cap 210 can protect the monitor 1 and the analyte sensor 11.

[0120] The shell assembly 20 includes a protective cover 29, and the sensor cap 210 is installed on the part of the guide needle frame 25 through the monitor 1. The protective cover 29 is fixed on the shell 21. The shell 21 has an opening 212, and the protective cover 29 is installed at the opening 212.

[0121] In one embodiment, the anti-misoperation function can be achieved by unlocking the shell holding structure 27, and the user does not need to disassemble the anti-misoperation part, which is more convenient for the user to use. The shell 21 of the needle helper acts as a key, and no separate key part needs to be added, which reduces the manufacturing cost. At the same time, the area of the shell 21 is larger than that of the separate key, which is more convenient for the user to use.

[0122] In one embodiment, please refer to Figure 2 The guide needle frame 25 has a clamping jaw 251, and the clamping jaw 251 clamps the needle handle 261 of the guide needle 26.

[0123] In one embodiment, please refer to Figures 1 to 6 The implantation process of the analyte sensor implantation device is as follows:

[0124] When the analyte sensor 11 needs to be implanted into the human body, the protective cover 29 of the analyte sensor implantation device is opened, the sensor cap 210 is disassembled, the opening 212 of the shell 21 is directed to the position of the human body where the sensor needs to be implanted, pressure is applied to the pressing end 211 of the shell 21, the holding release structure 214 of the shell 21 is in contact with the unlocking shell holding structure 27, the holding force of the unlocking shell holding structure 27 on the shell 21 is overcome, the holding effect of the unlocking shell holding structure 27 on the shell 21 is released, and the unlocking part 213 can unlock the locking structure 231.

[0125] After the monitor frame 23 is unlocked, it moves towards the human body under the action of the implanting elastic member 24. The stop structure 232 stops the guide needle frame 25 in the direction away from the human body, so that when the monitor frame 23 moves towards the implanting position, it can drive the guide needle frame 25 and the guide needle 26 to move in the direction close to the human body, and then drive the guide needle to move in the direction of penetrating into the human body, so that the guide needle 26 implants the analyte sensor 11 into the human body. After the analyte sensor 11 is implanted into the human body, the guide needle 26 implants the analyte sensor 11 into the human body, the releasing structure 221 releases the force applied to the stop structure 232, the stop structure 232 releases the stop of the guide needle frame 25, and the guide needle frame 25 and the monitor frame 23 can move relatively. Under the action of the needle withdrawing elastic member 28, the guide needle 26 is withdrawn from the human body. After the implanting of the analyte sensor 11 is completed, the needle helper 2 is removed by operating the shell 21. Under the action of the patch member 12, the monitor 1 is separated from the monitor frame 23, and the monitor 1 adhered to the surface of the human body can monitor the parameters of the human body in real time.

[0126] The above application of specific examples is used to illustrate the present application, and is used to help understand the present application, and does not limit the present application. According to the idea of the present application, those skilled in the art can make several simple deductions, deformations or substitutions.

Claims

1. An analyte sensor implantation device, characterized by, The application relates to an analyte sensor implanting device, comprising: a shell assembly; a monitor rack movably mounted in the shell assembly; a monitor mounted on the monitor rack by suction; the monitor comprises an analyte sensor; a guide needle rack arranged on the monitor rack; a guide needle assembled on the guide needle rack; the guide needle is used for puncturing the skin to implant the analyte sensor; the monitor comprises an adhesive patch used for being attached to the skin; when the monitor is separated from the monitor rack under external force, the adhesive force between the adhesive patch and the skin can enable the monitor to be left on the skin through the adhesive patch; the monitor is mounted on the monitor rack at least by the action of vacuum suction; the monitor rack has a monitor rack suction surface and a vacuum channel; one end of the vacuum channel is arranged on the monitor rack suction surface; the analyte sensor implanting device comprises a sealing plug for sealing the vacuum channel; the monitor rack comprises a locking structure for locking the shell assembly and the monitor rack; the shell assembly comprises an unlocking part for unlocking the locking structure; the analyte sensor implanting device further comprises: an implanting elastic member for applying an implanting elastic force to the monitor rack; the implanting elastic force is used for driving the monitor rack to move towards the human body after the locking structure is unlocked; the monitor rack further comprises a stop structure for stopping the guide needle rack in a direction away from the human body, so that the monitor rack can drive the guide needle rack to move towards the human body; the shell assembly comprises a releasing structure; the releasing structure releases the stop of the guide needle rack by the stop structure when the monitor rack moves to the state that the analyte sensor is implanted into the human body by the guide needle; a needle retracting elastic member for applying a needle retracting elastic force to the guide needle rack; the needle retracting elastic force drives the guide needle rack to retract the guide needle after the stop of the guide needle rack by the stop structure is released; when the guide needle rack is driven by the needle retracting elastic member to move in the direction of retracting the guide needle, the guide needle rack releases the sealing of the sealing plug.

2. The analyte sensor implantation device of claim 1, wherein, the sealing plug is mounted on the guide needle rack; when the guide needle rack is driven by the needle retracting elastic member to retract the guide needle, the sealing plug is pulled out of the vacuum channel by the guide needle rack.

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