Needle assisting device for implanting analyte sensor and implanting device for analyte sensor

Abstract

The utility model relates to the technical field of medical equipment, in particular to a needle assisting device for implanting an analyte sensor and an analyte sensor implanting device. Due to the fact that in the process of implanting the analyte sensor, the implanting frame moves towards the human body relative to the movable stopping part under the action of the implanting elastic piece, after the analyte sensor is implanted, limitation of the movable stopping part of the implanting frame on the movable stopping part is relieved, and the movable stopping part can move under the action of the return pin elastic piece; the guide needle frame can overcome the stopping effect of the movable stopping part to move in the direction away from the human body, so that the guide needle retracts into the shell assembly. Due to the fact that the guide needle frame can overcome the stopping effect of the movable stopping part to retract into the shell assembly, the retraction amount of the guide needle is larger, and a user is not prone to being punctured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a needle helper for implanting an analyte sensor and an analyte sensor implanting device. BACKGROUND

[0002] Traditional blood glucose measurement methods are complicated, have deep incisions, obvious pain, and can only measure a single value, so 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 a sharp object (a guide needle) of an implanting device to insert the analyte sensor into the human body so that the analyte sensor is in contact with the body fluid. After the existing needle helper completes the needle insertion, the guide needle retracts a small amount, and the user is more likely to be pricked by the guide needle when pressing the needle helper after completing the needle insertion. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a needle helper for implanting an analyte sensor, which is used to improve the problem that the guide needle retracts a small amount after the needle insertion of the existing needle helper is completed, and the user is more likely to be pricked by the guide needle when pressing the needle helper after completing the needle insertion.

[0004] In addition, the purpose of the present application is also to provide an analyte sensor implanting device using the above-mentioned needle helper.

[0005] According to a first aspect, a needle helper for implanting an analyte sensor is provided in an embodiment, comprising:

[0006] a shell assembly;

[0007] an implanting frame movably mounted in the shell assembly; the implanting frame comprises a locking structure for locking the shell assembly and the implanting frame; the shell assembly comprises an unlocking part for contacting and unlocking the locking structure;

[0008] an implanting elastic member for driving the implanting frame to move towards the human body after the locking structure is unlocked;

[0009] a guide needle frame provided on the implanting frame; the implanting frame comprises a stop structure for stopping the guide needle frame, so that the implanting frame can drive the guide needle frame to move towards the human body;

[0010] a guide needle assembled on the guide needle frame; the shell assembly comprises an unlocking structure; when the implanting frame moves to the position where the analyte sensor is implanted into the human body by the guide needle, the stop of the guide needle frame by the stop structure is unlocked by the unlocking structure;

[0011] and a needle returning elastic member, which is capable of driving the guide needle frame to pull out the guide needle after the stop structure is released from the stop action on the guide needle frame;

[0012] The shell assembly has a movable stopper for preventing the guide needle frame from moving away from the human body; the implant frame has a stopper moving limiting part for limiting the movement of the movable stopper; after the analyte sensor is implanted into the human body by the guide needle, the movable stopper is released from the limitation of the stopper moving limiting part; the guide needle frame can move away from the human body under the action of the needle returning elastic member.

[0013] Further, in an embodiment, the movable stopper is an elastic structure, and the guide needle frame can elastically deform the movable stopper under the action of the needle returning elastic member, so as to overcome the stop action of the movable stopper.

[0014] Further, in an embodiment, the movable stopper includes a stopper elastic arm and a stopper protrusion on the stopper elastic arm, the stopper protrusion is used for stop cooperation with the guide needle frame to prevent the guide needle frame from moving away from the distal end, and the guide needle frame can elastically deform the stopper elastic arm under the action of the needle returning elastic member to release the stop action of the stopper protrusion.

[0015] Further, in an embodiment, the shell assembly includes a mounting sleeve, the mounting sleeve is located at the periphery of the guide needle frame, and the stopper elastic arm is located on the mounting sleeve.

[0016] Further, in an embodiment, the proximal end of the needle helper is an operation end, the distal end of the needle helper is used for being directed to the position to be implanted into the human body, the proximal end of the stopper elastic arm is a fixed end, the distal end of the stopper elastic arm is a free end, and the stopper protrusion is located at the distal end of the stopper elastic arm.

[0017] Further, in an embodiment, at least one of the stopper protrusion and the guide needle frame has a stop slope surface, the stop slope surface is used for guiding the movement of the movable stopper under the action of the needle returning elastic member.

[0018] Further, in an embodiment, the implant frame is a monitor frame, and the monitor frame has a monitor mounting structure for mounting a monitor.

[0019] Further, in an embodiment, the shell assembly includes a mounting sleeve and a pressing unlocking shell, at least part of the mounting sleeve is mounted in the pressing unlocking shell, the unlocking part is located on the pressing unlocking shell, and the locking structure is used for locking the mounting sleeve and the implant frame.

[0020] Further, in an embodiment, the releasing structure is configured to apply a force to the stop structure to release the stop of the stop structure to the guide needle holder, at least part of the stop structure is an elastic structure, the elastic structure is elastically deformed after the releasing structure applies the force to release the stop to the guide needle holder.

[0021] In a second aspect, an embodiment provides an analyte sensor implantation device, comprising a monitor and the needle helper as described in any embodiment of the first aspect, the monitor comprising an analyte sensor.

[0022] According to the above-mentioned embodiments of the needle helper for implanting an analyte sensor, the shell assembly of the needle helper has a movable stop portion, which can prevent the guide needle from moving away from the human body before the analyte sensor needs to be implanted, and after the implant holder drives the guide needle holder to move towards the human body so that the guide needle implants the analyte sensor into the human body, the stop relationship between the implant holder and the guide needle holder is released by the releasing structure, and under the action of the needle retraction elastic member, the guide needle holder can move away from the human body, so that the guide needle is withdrawn. During the implantation of the analyte sensor, the implant holder moves towards the human body relative to the movable stop portion under the action of the implant elastic member, and after the analyte sensor is implanted, the restriction of the blocking movable portion of the implant holder to the movable stop portion is released, the movable stop portion can move under the action of the needle retraction elastic member, and the guide needle holder can move away from the human body against the stop action of the movable stop portion, so that the guide needle is retracted into the shell assembly. Since the guide needle holder can move into the shell assembly against the stop action of the movable stop portion, the guide needle has a larger retraction amount and is less likely to injure the user. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic diagram of an analyte sensor implantation device according to an embodiment;

[0024] Figure 2 FIG. 2 is a sectional view of the analyte sensor implantation device according to an embodiment;

[0025] Figure 3 FIG. 3 is another sectional view of the analyte sensor implantation device according to an embodiment;

[0026] Figure 4 FIG. 4 is a structural schematic diagram of an implant holder and a guide needle holder of the analyte sensor implantation device according to an embodiment;

[0027] Figure 5 FIG. 5 is a structural schematic diagram of a mounting sleeve of the analyte sensor implantation device according to an embodiment;

[0028] Figure 6 FIG. 6 is a state diagram of the guide needle retracted into position in the analyte sensor implantation device according to an embodiment.

[0029] List of features corresponding to reference signs in the figures: 1, monitor; 11, analyte sensor; 12, adhesive sheet; 13, battery; 2, needle helper; 20, housing assembly; 200, stop slope; 21, press to unlock housing; 211, press end; 212, opening; 213, unlock portion; 2131, unlock arm; 214, release holding structure; 215, release holding arm; 2151, release holding arm slope; 22, mounting sleeve; 221, release structure; 2211, release protrusion; 2212, protrusion slope; 2213, protrusion guide slope; 222, movable stop portion; 2221, stop spring arm; 2222, stop protrusion; 23, implant holder; 231, locking structure; 2311, lock arm; 2312, hook; 2313, hook slope; 232, stop structure; 2321, support spring arm; 23211, support spring arm slope; 23212, inclined section; 23213, contact portion; 23214, contact slope; 23215, protrusion; 2322, stop portion; 233, holder body; 234, magnet; 235, movable blocking portion; 2351, slot; 24, implant spring; 25, guide needle holder; 251, clamping jaw; 26, guide needle; 261, needle handle; 27, unlock housing holding structure; 28, needle return spring; 29, protective cover; 210, sensor cap; 3, skin.

[0030] Explanation of bracketed reference signs in the figures: In the bracketed reference signs in the figures, the feature referred to by the reference sign is both the feature represented by the number within the brackets and the feature represented by the number outside the brackets. DETAILED DESCRIPTION

[0031] The application will be further described below in connection with the drawings. Like reference numerals in different embodiments designate like elements. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that some features, which are not necessarily the most important to the application, can be left out in different embodiments. In some cases, well-known features are not described in detail in order to avoid obscuring the application. Embodiments of the application are illustrated by way of example and not limitation in the figures of the accompanying drawings in which like references indicate similar elements.

[0032] In addition, features described in the specification, operations or characteristics can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be sequentially changed or adjusted in a manner that can be apparent to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0033] The serial numbers of the components in the specification, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in the present application include direct connection, indirect connection and contact connection (coupling) unless otherwise specified.

[0034] In one embodiment, referring to Figures 1 to 6 , 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 the human body.

[0035] The analyte sensor implanting device 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 the human body, and the monitor 1 can be an instrument for monitoring blood glucose of the human body.

[0036] In one embodiment, the proximal end of the needle helper 2 is the operating 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 operating position, wherein the proximal end is the end close to the operator's hand, and the distal end is the end away from the operator's hand.

[0037] In one embodiment, referring to Figures 1 to 6 , the needle helper 2 includes a shell assembly 20, an implanting frame 23, an implanting elastic member 24, a guide needle frame 25, a guide needle 26 arranged on the implanting frame 23, and a needle returning elastic member 28. The implanting frame 23 is movably mounted in the shell assembly 20, and the implanting frame 23 includes a locking structure 231 for locking the shell assembly 20 and the implanting frame 23. Before using the analyte sensor implanting device, the relative position of the implanting frame 23 and the shell assembly 20 is locked and cannot move relatively. When the analyte sensor 11 needs to be implanted into the human body, the locking structure 231 needs to be unlocked.

[0038] The shell assembly 20 comprises an unlocking portion 213 for contacting the locking structure 231 to unlock the locking structure 231 from the implant holder 23. The implant spring 24 is arranged to apply an implant force to the implant holder 23, and after the locking structure 231 is unlocked, the implant holder 23 is moved distally, i.e. towards the human body, under the force of the implant spring 24.

[0039] The implant holder 23 has an initial position and an implant position in its active stroke, in the initial position, the implant holder 23 is locked by the locking structure 231, and in the implant position, the guide needle 26 implants the analyte sensor 11 into the human body.

[0040] The implant holder 23 comprises a stop structure 232 for stopping the guide needle holder 25 from moving away from the human body, so that when the implant holder 23 is moved towards the implant position, the implant holder 23 can drive the guide needle holder 25 to move towards the human body, and in turn drive the guide needle 26 to move towards the human body.

[0041] The shell assembly 20 further comprises a release structure 221, the guide needle 26 is mounted on the guide needle holder 25, and when the implant holder 23 is moved to the implant position, the guide needle 26 implants the analyte sensor 11 into the human body, and the stop structure 232 is released by the release structure 221 from stopping the guide needle holder 25. The needle retraction spring 28 is arranged to apply a needle retraction force to the guide needle holder 25, and after the stop structure 232 is released from stopping the guide needle holder 25, the needle retraction spring 28 can drive the guide needle holder 25 to retract the guide needle 26.

[0042] The shell assembly 20 has a movable stop portion 222 for preventing the guide needle holder 25 from moving away from the human body. The implant holder 23 has a prevention active portion 235 for limiting the deformation of the movable stop portion 222, and for maintaining the stop relationship between the movable stop portion 222 and the guide needle holder 25. After the guide needle 26 implants the analyte sensor 11 into the human body, the prevention active portion 235 releases the limitation on the movable stop portion 222, and the guide needle holder 25 can move away from the human body against the stop of the movable stop portion 222 under the action of the needle retraction spring 28.

[0043] The shell assembly 20 of the needle helper 2 has a movable stop 222. Before the analyte sensor 11 is implanted, the movable stop 222 prevents the guide needle 26 from moving away from the human body. After the analyte sensor 11 is implanted by the implanting frame 23 driving the guide needle frame 25 towards the human body, the stop relationship between the implanting frame 23 and the guide needle frame 25 is released by the releasing structure 221. Under the action of the needle retracting elastic member 28, the guide needle frame 25 can move away from the human body, thereby retracting the guide needle 26. During the implantation of the analyte sensor 11, the implanting frame 23 moves towards the human body relative to the movable stop 222 under the action of the implanting elastic member 24. After the analyte sensor 11 is implanted, the movable stop 222 can move under the action of the needle retracting elastic member 28, and the guide needle frame 25 can move away from the human body to retract the guide needle 26.

[0044] The present application uses the implanting elastic member 24 to apply a force to complete the penetration of the guide needle 26, thereby reducing the requirement for manual force. The releasing structure 221 can stably release the stop structure 232, thereby reducing the difficulty of operation for the operator.

[0045] In one embodiment, please refer to Figure 1 and Figure 6 The guide needle frame 25 can move beyond the movable stop 222 to completely retract the guide needle 26 into the shell assembly 20. In some other embodiments, the guide needle frame 25 can also partially move beyond the movable stop 222 or not move beyond the movable stop 222.

[0046] It should be noted that the movable stop 222 in the present application not only includes a part that can be separated from the rest of the guide needle holder 25 and move independently, but also includes a part that is connected with the rest of the guide needle holder and moves through deformation or other ways. For example, in one embodiment, the movable stop 222 is a resilient structure, and the movable stop 222 generates movement through elastic deformation. The guide needle holder 25 can make the movable stop 222 elastically deform under the action of the needle return elastic member 28, so as to overcome the stop action of the movable stop 222. In some other embodiments, in addition to the resilient structure, the shell assembly 20 can also have a mounting hole, and the movable stop 222 is a slider movably mounted in the mounting hole. The slider is blocked by the blocking movement part 235, and the part of the slider that stops the guide needle holder 25 cannot retract into the mounting hole. After the blocking movement part 235 leaves the mounting hole, the part of the slider that stops the guide needle holder 25 can retract into the mounting hole, thereby removing the stop action on the guide needle holder 25.

[0047] In one embodiment, please refer to Figure 2 and Figure 5 The movable stop 222 includes a stop spring arm 2221 and a stop protrusion 2222 on the stop spring arm 2221. The stop protrusion 2222 is used for stop cooperation with the guide needle holder 25 to prevent the guide needle holder 25 from moving distally. The guide needle holder 25 can make the stop spring arm 2221 elastically deform under the action of the needle return elastic member 28 to remove the stop action of the stop protrusion 2222. In some other embodiments, the movable stop 222 can be a resilient metal sheet in addition to the stop spring arm 2221.

[0048] In one embodiment, please refer to Figure 2 The shell assembly 20 includes a mounting sleeve 22 and a pressing unlocking shell 21. At least part of the mounting sleeve 22 is mounted in the pressing unlocking shell 21, and the unlocking part 213 is on the pressing unlocking shell 21. The locking structure 231 is used for locking the mounting sleeve 22 and the implant holder 23. In one embodiment, the proximal end of the pressing unlocking shell 21 is a pressing end 211 for pressing operation, and the distal end has an opening 212 for facing the human body. The mounting sleeve 22 and the implant holder 23 are movably assembled in the pressing unlocking shell 21, and the release structure 221 is on the mounting sleeve 22. In one embodiment, please refer to Figure 6 After the analyte sensor 11 is implanted, the guide needle holder 25 returns under the action of the needle return elastic member 28 until it contacts the inner wall of the pressing unlocking shell 21.

[0049] In one embodiment, please refer to Figure 2 and Figure 3 The mounting sleeve 22 is on the periphery of the guide needle holder 25, and the stop spring arm 2221 is on the mounting sleeve 22. In some other embodiments, the stop spring arm 2221 can also be provided on the pressing unlocking shell 21.

[0050] In one embodiment, referring to Figures 2 to 4 , the needle returning elastic member 28 is between the needle guide frame 25 and the implant frame 23 and is always in a compressed state. In one embodiment, the implant elastic member 24 is between the mounting sleeve 22 and the implant frame 23 and is always in a compressed state. In one embodiment, both the needle returning elastic member 28 and the implant elastic member 24 are coil springs. The coil spring structure is simple and convenient to install.

[0051] In one embodiment, referring to Figure 2 and Figure 5 , the distal end of the needle helper is used to face the human body to be implanted, the proximal end of the stop elastic arm 2221 is a fixed end, the distal end of the stop elastic arm 2221 is a free end, and the stop protrusion 2222 is at the distal end of the stop elastic arm 2221. In some other embodiments, the stop elastic arm 2221 can also have a proximal end as a free end and a distal end as a fixed end, and in some other embodiments, the stop elastic arm 2221 can also extend along the circumference of the needle helper.

[0052] In one embodiment, referring to Figure 2 , at least one of the stop protrusion 2222 and the needle guide frame 25 has a stop slope 200, which is used to guide the elastic deformation of the stop elastic arm 2221 under the action of the needle returning elastic member 28. Under the guidance of the stop slope 200, the needle guide frame 25 can move more smoothly. In one embodiment, both the stop protrusion 2222 and the needle guide frame 25 have a stop slope 200. In some other embodiments, only the stop protrusion 2222 or only the needle guide frame 25 can have a stop slope.

[0053] In one embodiment, referring to Figure 2 and Figure 4 , the blocking movable part 235 has a slot 2351 for the stop elastic arm 2221 to be inserted along the extension direction of the needle guide 26, and after the stop elastic arm 2221 is inserted into the slot 2351, it is more stable, and the blocking movable part 235 has a better effect of preventing the stop elastic arm 2221 from deforming. In one embodiment, the blocking movable part 235 is L-shaped.

[0054] In one embodiment, the implant frame 23 is a monitor frame, and the monitor frame has a monitor mounting structure for mounting the monitor 1. In one embodiment, referring to Figure 2 and Figure 6 , the monitor mounting structure includes a magnet 234 fixed on the implant frame 23, and the monitor 1 includes a battery 13, which is adsorbed by the battery shell of the battery 13 and the magnet 234, so as to realize the fixation of the monitor 1 on the implant frame 23. After the adhesive sheet 12 is adhered to the human body, the adhesive force of the adhesive sheet 12 is greater than the magnetic force, and when the biosensor needle helper is pulled out, the monitor 1 is separated from the implant frame 23.

[0055] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 4 , the releasing structure 221 is used to apply force to the stop structure 232 to release the stop of the guide needle holder 25 by the stop structure 232, at least part of the stop structure 232 is an elastic structure, which is elastically deformed after the releasing structure 221 applies force to release the stop of the guide needle holder 25.

[0056] Further, in one embodiment, please refer to Figures 2 to 5 , at least part of the stop structure 232 is an elastic structure, which is elastically deformed after the releasing structure 221 applies force to release the stop of the guide needle holder 25. 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.

[0057] Regarding the form of the stop structure 232, in one embodiment, please refer to Figure 3 and Figure 4 , the stop structure 232 includes a bracket elastic arm 2321 and a stop portion 2322 on the bracket elastic arm 2321, the stop portion 2322 is used to stop the guide needle holder 25.

[0058] In one embodiment, please refer to Figure 3 and Figure 4 , the implant 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.

[0059] In one embodiment, please refer to Figures 2 to 5 , the releasing structure 221 deforms the bracket elastic arm 2321 by applying force to the bracket elastic arm 2321 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 in other forms other than the elastic structure, the stop structure 232 can include a movable locking tongue, which stops the guide needle holder 25, and the releasing structure 221 releases the stop relationship between the locking tongue and the guide needle holder 25 by retracting the locking tongue.

[0060] Further, in one embodiment, please refer to Figures 3 to 5The direction in which the guide needle 26 penetrates into the human body is a first direction, and the support spring arm 2321 extends along the first direction. The support spring arm 2321 comprises a contact portion 23213, and the contact portion 23213 has a contact slope surface 23214 for contacting the releasing structure 221. The releasing structure 221 deforms the support spring arm 2321 by abutting against the contact slope surface 23214. Specifically, in one embodiment, the support spring arm 2321 comprises a straight arm and a protrusion 23215 on the straight arm. The straight arm extends along the first direction, and the protrusion 23215 is on one side of the straight arm. The contact slope surface 23214 is on the protrusion 23215. In some other embodiments, the support spring arm 2321 can have other types of forms in addition to the straight arm, such as a curved spring arm or an inclined spring arm.

[0061] Regarding the releasing structure 221, in one embodiment, referring to Figures 2 to 4 the releasing structure 221 comprises 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 elastically deform the support spring arm 2321 away from the releasing protrusion 2211.

[0062] In one embodiment, referring to Figures 2 to 5 the proximal end of the support spring arm 2321 is a free end, and the distal end of the support spring arm 2321 is a connecting end. The stop portion 2322 is close to the contact portion 23213 and away from the connecting end. When the support spring arm 2321 is deformed, 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 formed by the contact portion 23213.

[0063] Specifically, in one embodiment, referring to Figure 4 In order to facilitate the design of the structure, the support spring arm 2321 has a set width, and the contact portion 23213 and the stop portion 2322 are arranged apart along the circumference of the implant 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 implant holder 23, and the contact portion 23213 and the stop portion 2322 are at the same position in the extension direction of the support spring arm 2321.

[0064] In one embodiment, referring to Figures 2 to 4The mounting sleeve 22 is movably assembled in the pressing unlocking shell 21. The implant frame 23 is movably assembled on the mounting sleeve 22. The unlocking shell retaining structure 27 is arranged on the implant frame 23. The unlocking shell retaining structure 27 is used to exert a retaining force on the pressing unlocking shell 21 to retain the position of the pressing unlocking shell 21. In some other embodiments, the unlocking shell retaining structure 27 can also be arranged on the mounting sleeve 22. In some other embodiments, the number of the unlocking shell retaining structure 27 can be more than two, part of which is arranged on the mounting sleeve 22 and part of which is arranged on the implant frame 23.

[0065] The pressing unlocking shell 21 has a retaining releasing structure 221. The retaining releasing structure 221 is in contact with the unlocking shell retaining structure 27 after the pressing unlocking shell 21 is pressed. The retaining releasing structure 221 is used to release the retaining force of the unlocking shell retaining structure 27 on the pressing unlocking shell 21 to enable the unlocking portion 213 to unlock the locking structure 231. The size of the retaining force is selected within a reasonable range according to the pressing force on the pressing unlocking shell 21. The unlocking shell retaining structure 27 releases the retaining of the pressing unlocking shell 21 after the pressing unlocking shell 21 is pressed and the retaining force is overcome. This can prevent accidental touch.

[0066] In one embodiment, please refer to Figure 2 and Figure 3 The unlocking shell retaining structure 27 is arranged at the proximal end of the implant frame 23. This facilitates the interaction between the unlocking shell retaining structure 27 and the pressing unlocking shell 21. In some other embodiments, the unlocking shell retaining structure 27 can also be arranged at the distal end of the pressing unlocking shell 21.

[0067] The stop structure 232 includes a bracket elastic arm 2321 and a stop portion 2322 arranged on the bracket elastic arm 2321. The stop portion 2322 is used to stop the guide needle frame 25. One end of the bracket elastic arm 2321 is a free end which can move when the bracket elastic arm 2321 is deformed. The other end is a connecting end which is connected to the frame body 233.

[0068] The releasing structure 221 deforms the bracket elastic arm 2321 by exerting a force on the bracket elastic arm 2321 to release the stop relationship between the stop portion 2322 and the guide needle frame 25. The bracket elastic arm 2321 forms at least part of the unlocking shell retaining structure 27. The bracket elastic arm 2321 extends from the distal end to the proximal end of the implant frame 23. The bracket elastic arm 2321 retains the position of the pressing unlocking shell 21 by abutting against the pressing unlocking shell 21. The pressing unlocking shell 21 deforms the bracket elastic arm 2321 by pressing the bracket elastic arm 2321 to release the abutting relationship between the bracket elastic arm 2321 and the pressing unlocking shell 21.

[0069] In one embodiment, please refer to Figures 2 to 4The bracket elastic arm 2321 extends from the distal end of the implant frame 23 to the proximal end, and the bracket elastic arm 2321 keeps the position of the pressing unlocking shell 21 by abutting against the pressing unlocking shell 21. In some other embodiments, the unlocking shell keeping structure 27 can also use elastic sheets in addition to the bracket elastic arm 2321.

[0070] Further, in one embodiment, referring to Figures 2 to 4 The keeping releasing structure 214 includes a keeping releasing arm 215, which is located in the pressing unlocking shell 21 and extends from the proximal end of the pressing unlocking shell 21 to the distal end of the pressing unlocking shell 21. The distal end of the keeping releasing arm 215 abuts against the proximal end of the bracket elastic arm 2321, and both the distal end of the keeping releasing arm 215 and the proximal end of the bracket elastic arm 2321 have a slope surface. The slope surface of the distal end of the keeping releasing arm 215 is a keeping releasing arm slope surface 2151, and the slope surface of the proximal end of the bracket elastic arm 2321 is a bracket elastic arm slope surface 23211. Both the keeping releasing arm slope surface 2151 and the bracket elastic arm slope surface 23211 are used to guide the bracket elastic arm 2321 to deform after the pressing unlocking shell 21 is pressed, release the abutting relationship between the keeping releasing arm 215 and the bracket elastic arm 2321, and thus release the keeping effect of the unlocking shell keeping structure 27. In one embodiment, the keeping releasing arm 215 is a rigid arm. In some other embodiments, both the bracket elastic arm 2321 and the keeping releasing arm 215 are elastic arms.

[0071] It should be noted that the slope surface in the present application refers to a surface with a certain slope in the direction of movement of the implant frame 23. The slope surface can be a slope surface, a convex surface, or a concave surface.

[0072] In one embodiment, referring to Figures 2 to 4 When the abutting relationship with the pressing unlocking shell 21 is released, the bracket elastic arm 2321 is bent and deformed to the first side of the bracket elastic arm 2321, and when the stopping relationship with the guide needle frame 25 is released, the bracket elastic arm 2321 is bent and deformed to the second side of the bracket elastic arm 2321. The first side and the second side are opposite sides of the bracket elastic arm 2321.

[0073] Specifically, in one embodiment, referring to Figures 2 to 4 The bracket elastic arm 2321 includes an inclined section 23212, and one end surface of the inclined section 23212 is the bracket elastic arm slope surface 23211. The bracket elastic arm slope surface 23211 is used to abut against the keeping releasing structure 221 after the pressing unlocking shell 21 is pressed, so that the bracket elastic arm 2321 is deformed.

[0074] In one embodiment, referring to Figures 2 to 4In 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 on the bracket elastic arm slope 23211 by pressing the pressing unlocking shell 21, a greater force is required to make the bracket elastic arm 2321 elastically deform, and then release the holding effect of the bracket elastic arm 2321 on the pressing unlocking shell 21.

[0075] In an embodiment, referring to Figure 2 and Figure 3 , in order to facilitate the release of the locking of the implant frame 23, the minimum force required by the holding release structure 214 to release the holding effect of the unlocking shell holding structure 27 on the pressing unlocking shell 21 is the first force, and the minimum force required by the unlocking part 213 to release the locking effect of the locking structure 231 on the implant frame 23 is the second force. The first force is greater than the second force. In this way, the anti-misoperation effect can be improved, and the implant frame 23 can be more smoothly unlocked, and the overall operation is more smooth.

[0076] In some other embodiments, according to actual needs, the first force can also be less than or equal to the second force.

[0077] In an embodiment, referring to Figure 2 and Figure 4 , 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 pressing unlocking 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 pressing unlocking shell 21 to the distal end of the pressing unlocking 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 pressing unlocking shell 21.

[0078] Further, in an embodiment, referring to Figure 2 and Figure 4 , the locking structure 231 includes the locking arm 2311, the locking arm 2311 extends from the distal end of the implant frame 23 to the proximal end, and the proximal end of the locking arm 2311 is provided with the hook 2312. The hook 2312 is clamped on the mounting sleeve 22 to achieve the locking of the implant frame 23 and the mounting sleeve 22. The unlocking part 213 deforms the locking arm 2311 by pressing against the hook 2312 to separate the hook 2312 from the mounting sleeve 22.

[0079] Specifically, referring to Figure 2 and Figure 4In order to conveniently unlock the clamping hook 2312, the clamping hook 2312 is provided with a clamping hook slope surface 2313, and the end of the unlocking arm 2131 is provided with an unlocking arm slope surface. Through cooperation between the unlocking arm slope surface and the clamping hook slope surface 2313, the clamping hook 2312 can be applied with a force to separate the clamping hook 2312 from the mounting sleeve 22.

[0080] Further, in an embodiment, please refer to Figures 2 to 4 The implant frame 23 is installed in the mounting sleeve 22, and the mounting sleeve 22 can guide the implant frame 23 to move linearly. In this way, the implant frame 23 can be prevented from rotating, and the implant frame 23 can move more smoothly.

[0081] In an embodiment, please refer to Figures 2 to 4 Under the action of the needle returning elastic member 28, the guide needle frame 25 and the implant frame 23 can be preassembled to form a preassembled body. The preassembled body is inserted into the mounting sleeve 22 from the distal end of the mounting sleeve 22 until the movable stop portion 222 is in contact with the guide needle frame 25. The implant elastic member 24 is press-fitted between the implant frame 23 and the mounting sleeve 22.

[0082] Further, in an embodiment, please refer to Figure 4 The number of the support elastic arms 2321 is at least two. In the direction from the distal end of the support elastic arm 2321 to the proximal end, the inclined section 23212 gradually inclines to the center line where the guide needle 26 is located. In this way, the support elastic arm 2321 can be conveniently inserted into the mounting sleeve 22.

[0083] In order to further facilitate the installation of the implant frame 23, in an embodiment, please refer to Figure 2 and Figure 3 The relief 2211 is provided with a relief guide slope surface 2213 in addition to the relief slope surface 2212. The relief guide slope surface 2213 is arranged opposite to the relief slope surface 2212. In this way, when the implant frame 23 is installed in the mounting sleeve 22, the relief guide slope surface 2213 can guide the support elastic arm 2321 to be inserted into the mounting sleeve 22.

[0084] Specifically, in an embodiment, please refer to Figures 2 to 4When the implant frame 23 is moved away from the shell assembly 20, the stop structure 232 of the implant frame 23 does not contact the guide needle frame 25 until the implant frame 23 is moved a first distance, and then the stop structure 232 stops the guide needle frame 25 and drives the guide needle frame 25 to move towards the distal end. This movement can be applied to the case where the needle handle 261 of the guide needle 26 is long, and the needle handle 261 still protrudes from the monitor 1 after passing through the monitor 1. The side of the monitor 1 facing the human body is provided with an adhesive piece 12, and after the guide needle 26 implants the analyte sensor 11 into the human body, the adhesive piece 12 contacts the skin 3 of the human body to fix the monitor 1 to the skin 3 of the human body. When the guide needle 26 is inserted into the human body, if the needle handle 261 of the guide needle 26 protrudes from the side of the monitor 1 facing the human body, the needle handle 261 of the guide needle 26 will be in contact with the skin 3 of the human body, which will affect the adhesion of the monitor 1 to the human body. In order to better fix 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, so that when the guide needle 26 is inserted into the human body, the needle handle 261 is flush with the side of the monitor 1 facing the human body or is retracted into the monitor 1 by a distance.

[0085] Further, in one embodiment, referring to Figures 2 to 4 , the guide needle frame 25 and the stop structure 232 of the implant frame 23 are kept in a state of being spaced apart and not in contact by the stop action of the movable stop portion 222. When the implant frame 23 is in the initial position, although the stop structure 232 of the implant frame 23 does not stop the guide needle frame 25, the needle return elastic member 28 is still in a compressed state and is between the guide needle frame 25 and the implant frame 23, so that the guide needle frame 25 is not easy to shake and has better stability.

[0086] In one embodiment, referring to Figures 2 to 6 , the needle handle 261 passing through the monitor 1 can be provided with a sensor cap 210, which can be installed on the needle handle 261 by any feasible means such as screwing, clamping, magnetic attraction, etc. The sensor cap 210 can protect the monitor 1 and the analyte sensor 11.

[0087] 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 passing through the monitor 1, and the protective cover 29 is fixed on the press-unlock shell 21. The press-unlock shell 21 has an opening 212, and the protective cover 29 is installed at the opening 212.

[0088] In one embodiment, the anti-mis-touch function is realized by unlocking the shell holding structure 27, without the need for the user to disassemble the anti-mis-touch part, which is more convenient for the user to use. The pressing unlocking shell 21 of the needle helper functions as a key, without the need for a separate key part, which reduces the manufacturing cost, and the area of the pressing unlocking shell 21 is larger than that of a separate key, which is more convenient for the user to use.

[0089] In one embodiment, referring to Figure 2 The guide needle holder 25 has a clamping jaw 251 that clamps the needle handle 261 of the guide needle 26.

[0090] In one embodiment, referring to Figures 1 to 6 The implantation process of the analyte sensor implantation device is as follows:

[0091] When it is necessary to implant the analyte sensor 11 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 pressing unlocking shell 21 is directed towards the position in the human body where the sensor needs to be implanted, pressure is applied to the pressing end 211 of the pressing unlocking shell 21, the holding release structure 214 of the pressing unlocking shell 21 is in contact with the unlocking shell holding structure 27, the holding force of the unlocking shell holding structure 27 on the pressing unlocking shell 21 is overcome, the holding of the unlocking shell holding structure 27 on the pressing unlocking shell 21 is released, and the unlocking part 213 can unlock the locking structure 231.

[0092] After the implantation holder 23 is unlocked, it moves towards the human body under the action of the implantation elastic member 24, the stop structure 232 stops the guide needle holder 25 in the direction away from the human body, so that when the implantation holder 23 moves towards the implantation position, it can drive the guide needle holder 25 and the guide needle 26 to move towards 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 restriction of the movable stop portion 222 by the movable portion 235 is released, the stop of the guide needle holder 25 by the stop structure 232 is released by the release structure 221, and the guide needle holder 25 and the implantation holder 23 can move relative to each other. Under the action of the needle withdrawal elastic member 28, the guide needle 26 is withdrawn from the human body, the guide needle holder 25 continues to move away from the human body after passing the movable stop portion 222, and the guide needle 26 is completely retracted into the shell assembly 20. After the implantation of the analyte sensor 11 is completed, the needle helper 2 is removed by operating the pressing unlocking shell 21, the monitor 1 is separated from the implantation holder 23 under the action of the adhesive sheet 12, and the monitor 1 is adhered to the surface of the human body to monitor the parameters of the human body in real time.

[0093] In one embodiment of the needle helper, the structure of the needle helper is the same as that of any one of the above-described embodiments, and will not be described again.

[0094] The above describes the present application by using specific examples, which is only used to help understand the present application and does not limit the present application. According to the idea of the present application, a person skilled in the art of the present application can make several simple deductions, deformations or substitutions.

Claims

1. A needle helper for implanting an analyte sensor, characterized by, The application relates to a needle insertion device, comprising: a housing assembly; an implant frame movably mounted in the housing assembly; the implant frame comprises a locking structure for locking the housing assembly and the implant frame; the housing assembly comprises an unlocking part for unlocking the locking structure; an implant elastic member for driving the implant frame to move towards a human body after the locking structure is unlocked; a guide needle frame arranged on the implant frame; the implant frame comprises a stop structure for stopping the guide needle frame, so that the implant frame can drive the guide needle frame to move towards the human body; a guide needle assembled on the guide needle frame; the housing assembly comprises an unlocking structure; when the implant frame moves to the position where the analyte sensor is implanted into the human body, the stop of the guide needle frame by the stop structure is released by the unlocking structure; and a needle retraction elastic member for driving the guide needle frame to retract the guide needle after the stop of the guide needle frame by the stop structure is released; the housing assembly has a movable stop part for preventing the guide needle frame from moving away from the human body; the implant frame has a stop preventing part for limiting the movement of the movable stop part; after the analyte sensor is implanted into the human body by the guide needle, the limitation of the movable stop part by the stop preventing part is released; the guide needle frame can move away from the human body under the action of the needle retraction elastic member.

2. The needle guide for implanting an analyte sensor of claim 1, wherein, the movable stop part is an elastic structure; the guide needle frame can make the movable stop part elastically deform under the action of the needle retraction elastic member, so as to overcome the stop action of the movable stop part.

3. The needle guide for implanting an analyte sensor of claim 2, wherein, the movable stop part comprises a stop elastic arm and a stop protrusion on the stop elastic arm; the stop protrusion is used for stopping the guide needle frame to prevent the guide needle frame from moving away from the human body; the guide needle frame can make the stop elastic arm elastically deform under the action of the needle retraction elastic member to release the stop action of the stop protrusion.

4. The needle guide for implanting an analyte sensor of claim 3, wherein, the housing assembly comprises a mounting sleeve; the mounting sleeve is arranged on the periphery of the guide needle frame; and the stop elastic arm is arranged on the mounting sleeve.

5. The needle guide for implanting an analyte sensor of claim 4, wherein, the proximal end of the needle insertion device is an operation end; the distal end of the needle insertion device is used for moving towards the position where the analyte sensor is implanted into the human body; the proximal end of the stop elastic arm is a fixed end; the distal end of the stop elastic arm is a free end; and the stop protrusion is arranged on the distal end of the stop elastic arm.

6. The needle guide for implanting an analyte sensor of claim 5, wherein, at least one of the stop protrusion and the guide needle frame has a stop slope surface for guiding the movement of the movable stop part under the action of the needle retraction elastic member.

7. The needle guide for implanting an analyte sensor of any one of claims 1-5, wherein, the implant frame is a monitor frame; the monitor frame has a monitor mounting structure for mounting a monitor.

8. The needle guide for implanting an analyte sensor of any one of claims 1-5, wherein, the housing assembly comprises a mounting sleeve and a pressing unlocking housing; at least part of the mounting sleeve is mounted in the pressing unlocking housing; the unlocking part is arranged on the pressing unlocking housing; and the locking structure is used for locking the mounting sleeve and the implant frame.

9. The needle guide for implanting an analyte sensor of any one of claims 1-5, wherein, The releasing structure is used to apply force to the stop structure to release the stop of the guide needle frame by the stop structure, at least part of the stop structure is an elastic structure, the elastic structure is elastically deformed after the releasing structure applies force, and the stop of the guide needle frame is released.

10. An analyte sensor implantation device, comprising: The device comprises a monitor and a needle helper according to any one of claims 1-9, and the monitor comprises an analyte sensor.

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