Implantation device for an analyte sensor

Abstract

The application provides an implanting device of an analyte sensor, comprising a shell, a sheath, a monitor support, a first elastic member, a guide needle support and a second elastic member. The sheath has a locking portion; the monitor support has a matching portion used for locking with the locking portion; the shell is used for abutting with the matching portion to release the locking of the matching portion and the locking portion; the first elastic member is installed between the sheath and the monitor support; the shell is used for abutting with the first elastic member before abutting with the matching portion; after the matching portion and the locking portion are released, the first elastic member can drive the monitor support to move towards the distal end; the second elastic member is arranged between the monitor support and the guide needle support, and is used for driving the guide needle support to move towards the proximal end after the guide needle support moves to a preset position. The implanting device of the analyte sensor provided by the application prevents the sheath from triggering the retraction of the guide needle support in advance, and improves the implanting success rate of the analyte sensor.

Description

TECHNICAL FIELD

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

[0002] Diabetes mellitus can cause coma, poisoning, neuropathy, cardiovascular and cerebrovascular complications and many other complications, so diabetic patients need to know whether their glucose level is within a safe range, but the traditional measurement method is cumbersome to use, has a deep incision, obvious pain and can only measure a single value, etc. Diabetic patients cannot know their glucose level in real time. In order to enable diabetic patients to know their glucose level in real time, some patients choose to wear an analyte sensor, which requires the use of an implanting device. The analyte sensor is inserted into the human body through the guide needle of the implanting device, so that the analyte sensor is in contact with the body fluid.

[0003] The analyte sensor is installed on the guide needle, and the monitor is installed on the monitor support of the implanting device. The monitor support is locked with the sheath before use by the user, and a spring is arranged between the sheath and the monitor support. When the user unlocks the monitor support, the monitor support can move towards the to-be-implanted part of the human body under the action of the spring. The monitor support can drive the guide needle on the guide needle support to penetrate into the human body, so as to penetrate the analyte sensor into the human body.

[0004] The guide needle needs to be retracted when it is implanted into the human body to a certain depth, that is, the guide needle support needs to be retracted when it moves to a preset position. The sheath is provided with an abutting structure for starting the retraction of the guide needle support. However, after the sheath and the monitor support are unlocked, the elastic force of the spring will cause the sheath to retract first relative to the shell outside the sheath, which changes the position of the abutting structure of the sheath, so that the guide needle support is started to retract by the abutting structure of the sheath before it moves to the preset position. This makes the guide needle retract before the analyte sensor is completely implanted into the human body, which increases the failure rate of implanting the analyte sensor. SUMMARY

[0005] The present application provides an implanting device of an analyte sensor, which can solve the problem that the sheath retracts before the guide needle support retracts, resulting in a high failure rate of implanting the analyte sensor.

[0006] To address the aforementioned technical problems, this application provides an implantation device for an analyte sensor, comprising a housing, a sheath, a monitor bracket, a first elastic element, a guide needle bracket, and a second elastic element. The sheath has a distal end and a proximal end disposed opposite to each other, the distal end being for contacting the implantation site on the human body; the sheath is movably connected to the housing, allowing the housing to move relative to the sheath toward the distal end; the sheath has a locking portion; the monitor bracket is used to mount a monitor; the monitor bracket has a mating portion for locking with the locking portion; the housing abuts against the mating portion to release the locking of the mating portion and the locking portion; the first elastic element is installed between the sheath and the monitor bracket; the housing abuts against the first elastic element before abutting against the mating portion, so that one end of the first elastic element abuts against the housing, and the second elastic element... The other end of an elastic member abuts against the monitor bracket; after the mating part and the locking part are unlocked, the first elastic member can drive the monitor bracket to move toward the distal end; the guide needle bracket is used to install the guide needle, and when the monitor bracket moves toward the distal end, it can drive the guide needle bracket to move toward the distal end; the second elastic member is disposed between the monitor bracket and the guide needle bracket, and the second elastic member is used to drive the guide needle bracket to move toward the proximal end after the guide needle bracket moves toward the distal end to a preset position; when the guide needle bracket moves toward the proximal end, it can abut against the sheath to push the sheath to move synchronously.

[0007] In one embodiment, the housing has an assembly cavity, at least a portion of the sheath is located in the assembly cavity and slidably connected to the housing, the assembly cavity has an opening on the side near the distal end, before the guide needle bracket pushes the sheath to move, the distal end of the sheath is located outside the assembly cavity through the opening, or the end face of the distal end of the sheath is flush with the opening; after the guide needle bracket pushes the sheath to move, the sheath can abut against the cavity wall near the proximal end of the assembly cavity, and the distal end of the sheath is located inside the assembly cavity.

[0008] In one embodiment, the sheath has a sliding channel that penetrates the sheath, and the monitor bracket can slide within the sliding channel; the monitor bracket has a mounting position, and the guide needle bracket is mounted in the mounting position; the proximal end has a first abutment and a locking part, the first abutment is disposed on the movement path of the guide needle bracket when it moves toward the proximal end, so as to abut against the guide needle bracket.

[0009] In one embodiment, the monitor bracket has a pushing part, and the guide needle bracket has a second abutting part. Before the mating part is unlocked, the second abutting part is located on the movement path of the pushing part. The pushing part is used to push the second abutting part when the monitor bracket moves toward the distal end. The sheath has a first unlocking part, which is used to release the push part from blocking the second abutting part after the guide needle bracket moves to a preset position.

[0010] In an embodiment, the monitor holder has a third abutting portion connected with the pushing portion in the circumferential direction, the first unlocking portion has a first inclined surface, and when the guide needle holder moves to the preset position towards the distal end, the third abutting portion can abut against and slide on the first inclined surface, and the first inclined surface is used to guide the third abutting portion, so that the third abutting portion drives the pushing portion to move out of the movement path of the second abutting portion.

[0011] In an embodiment, the sheath has an elastic stop portion, the pushing portion is spaced apart from the second abutting portion before the pushing portion abuts against the second abutting portion, the elastic stop portion limits the guide needle holder on the side of the guide needle holder close to the proximal end, and the second elastic member has an elastic restoring force towards the proxal end; the monitor holder has a first limiting portion, the first limiting portion is located outside the elastic stop portion before the pushing portion abuts against the second abutting portion, so as to limit the elastic stop portion, the first limiting portion is separated from the elastic stop portion after the pushing portion abuts against the second abutting portion, and the elastic stop portion is expanded towards the outside under the elastic force of the elastic stop portion, so as to move out of the movement path of the guide needle holder.

[0012] In an embodiment, the elastic stop portion has a second inclined surface, the guide needle holder has a third inclined surface, and the second inclined surface is used to abut against the third inclined surface, so as to limit the guide needle holder.

[0013] In an embodiment, the sheath has an annular outer wall and an annular inner wall, the annular outer wall is sleeved on the outer periphery of the annular inner wall; the monitor holder has a mounting portion, the mounting portion is located on the side of the annular inner wall away from the proximal end; the cooperation portion, the pushing portion and the first limiting portion are connected with the side of the mounting portion away from the distal end, and before the cooperation portion is unlocked, the cooperation portion and the pushing portion are located on the inner side of the annular inner wall, and the first limiting portion and the first elastic member are located between the annular outer wall and the annular inner wall; the annular inner wall is provided with the elastic stop portion and the first unlocking portion, and the first elastic member abuts against the mounting portion.

[0014] In an embodiment, the guide needle holder is located on the side of the mounting portion close to the proximal end, and the guide needle holder is located on the inner side of the pushing portion and the cooperation portion; the second elastic member is located between the mounting portion and the guide needle holder; the mounting portion is provided with a through hole for the guide needle to pass through the mounting portion, and the side of the mounting portion close to the distal end is used to mount the monitor.

[0015] In an embodiment, the proximal end has a top wall, the top wall is located on the side of the first elastic member away from the distal end, and the first elastic member is assembled between the top wall and the monitor holder; the top wall is provided with a notch penetrating through the top wall, the first elastic member is exposed to the notch, the shell has a fourth abutting portion, and the notch is used for the fourth abutting portion to pass through, so that the fourth abutting portion can abut against the first elastic member.

[0016] The application also provides an implanting device of an analyte sensor, which comprises a housing, a sheath, a monitor support, a first elastic member and a guide needle support. The housing has a second unlocking portion and a fourth abutting portion; the sheath has a distal end and a proximal end arranged oppositely, and the distal end is used for contacting a human body part to be implanted; the sheath is movably connected with the housing, so that the housing can move towards the distal end relative to the sheath; the sheath has a locking portion; the monitor support is used for mounting a monitor; the monitor support is mounted in the sheath, and the monitor support has a matching portion used for locking with the locking portion; the second unlocking portion is located on a side of the matching portion away from the distal end, and the second unlocking portion is used for abutting with the matching portion to release the locking between the matching portion and the locking portion; the first elastic member is mounted between the fourth abutting portion and the monitor support, the fourth abutting portion is located on a side of the first elastic member away from the distal end, and the fourth abutting portion is used for abutting with the first elastic member before the second unlocking portion abuts with the matching portion, so that the housing is subjected to the elastic restoring force of the first elastic member when moving towards the distal end; after the matching portion and the locking portion are released, the elastic restoring force of the first elastic member can drive the monitor support to move towards the distal end; and the guide needle support is used for mounting a guide needle, and the monitor support can drive the guide needle support to move towards the distal end.

[0017] In an embodiment, before the housing moves towards the distal end, the distance between the first elastic member and the fourth abutting portion is less than the distance between the second unlocking portion and the matching portion in the movement direction of the housing.

[0018] In an embodiment, the proximal end has a top wall, the top wall is located on a side of the first elastic member away from the distal end, and the first elastic member is assembled between the top wall and the monitor support; the top wall is provided with a gap penetrating through the top wall, the first elastic member is exposed to the gap, and the gap is used for allowing the fourth abutting portion to pass through, so that the fourth abutting portion can abut against the first elastic member.

[0019] In an embodiment, the fourth abutting portion comprises an abutting wall and a blocking portion, the number of the abutting walls is at least two, the at least two abutting walls are arranged at intervals along the circumferential direction of the first elastic member, the blocking portion is protruded on a side of the abutting wall away from the first elastic member, and the blocking portion is located on the inner side of the first elastic member in the radial direction of the first elastic member.

[0020] In an embodiment, the sheath has an annular outer wall and an annular inner wall, the annular outer wall is arranged at intervals on the outer periphery of the annular inner wall, the top wall is connected with a side of the annular outer wall away from the distal end and a side of the annular inner wall away from the distal end; the first elastic member is assembled between the annular outer wall and the annular inner wall to be sleeved on the outer periphery of the annular inner wall; and the gap between the annular outer wall and the annular inner wall is communicated with the gap.

[0021] In an embodiment, the number of the gap and the fourth abutting portion is at least two, the at least two gaps are arranged at intervals along the circumferential direction, and each fourth abutting portion is arranged opposite to each gap.

[0022] In an embodiment, the monitor holder has a pushing portion, the guide needle holder has a second abutting portion, the second abutting portion is located on the movement path of the pushing portion before the cooperation portion is unlocked, and the pushing portion is used to push the second abutting portion when the monitor holder moves towards the distal end.

[0023] In an embodiment, the sheath has an elastic stop portion; the pushing portion is spaced apart from the second abutting portion before the pushing portion abuts against the second abutting portion, the elastic stop portion limits the guide needle holder on the side close to the proximal end, the implanting device of the analyte sensor includes a second elastic member, the second elastic member is installed between the monitor holder and the guide needle holder, and the second elastic member has an elastic restoring force towards the proximal end; the monitor holder has a first limiting portion, the first limiting portion is located outside the elastic stop portion before the pushing portion abuts against the second abutting portion, so as to limit the elastic stop portion, the elastic stop portion has a second inclined surface, the guide needle holder has a third inclined surface, and the second inclined surface is used to abut against the third inclined surface, so as to limit the guide needle holder.

[0024] In an embodiment, the cooperation portion has a fourth inclined surface, the second unlocking portion has a fifth inclined surface, the shell can slide linearly relative to the sheath, the fourth inclined surface is used to abut against and slide relative to the fifth inclined surface, and the second unlocking portion drives the cooperation portion to move towards the direction of the radial outward, so as to release the locking of the cooperation portion and the locking portion.

[0025] In an embodiment, the cooperation portion includes an extension arm and a buckle block connected with each other, the buckle block has a fourth inclined surface on the side away from the extension arm, and the locking portion has an installation channel; when the cooperation portion is locked with the locking portion, the end of the extension arm close to the buckle block is located in the installation channel, the first abutting surface of the buckle block close to the extension arm abuts against the end surface of the locking portion away from the distal end, and the installation channel is located at the position of the radial outward of the first abutting surface.

[0026] The implanting device of the analyte sensor is provided with the first elastic member between the shell and the monitor support, the fourth abutting portion of the shell can abut against the first elastic member before the second unlocking portion abuts against the matching portion, that is, the fourth abutting portion abuts against the first elastic member before the monitor support and the sheath are unlocked; the force of the accidental touch is usually smaller than the elastic restoring force of the first elastic member, when the shell is accidentally touched to abut against the first elastic member, the elastic restoring force of the first elastic member can be used as resistance to resist the force of the accidental touch, the force of the accidental touch is not enough to overcome the elastic restoring force of the first elastic member to move the shell to the distal end, and when the shell abuts against the first elastic member, the second unlocking portion and the matching portion have not abutted against each other, that is, the first elastic member serves as the anti-accidental-touch part to provide resistance, which can prevent the unlocking of the matching portion, thereby achieving the anti-accidental-touch effect. When the user presses the shell and the pressing force of the user is greater than the elastic restoring force of the first elastic member, the shell can be driven to move to the distal end while abutting against the first elastic member, so that the second unlocking portion of the shell abuts against the matching portion, to release the locking of the matching portion and the locking portion, so that the monitor support can move to the distal end under the driving of the elastic restoring force of the first elastic member, and drive the guide needle support to move to the distal end, so that the guide needle can assist the analyte sensor to be implanted into the human body. The anti-trigger part of the implanting device of the analyte sensor in the application is the first elastic member, which does not need to be removed before use by the user, and does not bring unnecessary operation to the user. While having the anti-accidental-touch function, the user can directly press the shell for triggering when using, and the user operation is simple.

[0027] In the implanting device of the analyte sensor, the shell is the part pressed by the user to drive the shell to move relative to the sheath to release the locking of the monitor support and the sheath, and the shell will abut against the first elastic member in the sheath before unlocking the monitor support, so that when the monitor support and the sheath are unlocked, one end of the first elastic member abuts against the shell and the other end of the first elastic member abuts against the monitor support. Therefore, when the monitor support and the sheath are unlocked, the end of the first elastic member away from the monitor support abuts against the shell instead of the sheath, thereby preventing the problem that the first elastic member pushes the sheath to retract at the moment when the monitor support and the sheath are unlocked, so that the position of the sheath is relatively stable when the monitor support moves to the part to be implanted in the human body, preventing the sheath from triggering the guide needle support to retract in advance, and improving the success rate of implanting the analyte sensor. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure schematic diagram of the implanting device of the analyte sensor is provided for an embodiment of the application;

[0029] Figure 2 The cross-sectional view of the implanting device of the analyte sensor in the initial state is provided for an embodiment of the application;

[0030] Figure 3 A structural schematic view of a housing provided for an embodiment of the present application;

[0031] Figure 4 A structural schematic view of a sheath provided for an embodiment of the present application;

[0032] Figure 5 Another sectional view of the implanting device of the analyte sensor provided for an embodiment of the present application in an initial state;

[0033] Figure 6 A structural schematic view of the sheath, the monitor support, the guide needle support and the first elastic member provided for an embodiment of the present application in an initial state;

[0034] Figure 7 An exploded view of the monitor support, the guide needle support and the second elastic member provided for an embodiment of the present application;

[0035] Figure 8 Another structural schematic view of the sheath provided for an embodiment of the present application from another perspective;

[0036] Figure 9 A structural schematic view of the guide needle support and the monitor support provided for an embodiment of the present application;

[0037] Figure 10 An exploded view of the implanting device of the analyte sensor provided for an embodiment of the present application;

[0038] Figure 11 Still another sectional view of the implanting device of the analyte sensor provided for an embodiment of the present application in an initial state;

[0039] Figure 12 A structural schematic view of the implanting device of the analyte sensor provided for an embodiment of the present application when the guide needle support and the sheath are retracted completely;

[0040] Figure 13 A structural schematic view of the implanting device of the analyte sensor provided for an embodiment of the present application when the first unlocking portion and the third abutting portion abut;

[0041] Label: shell 10, second unlocking part 11, fifth inclined surface 111, fourth abutting part 12, abutting wall 121, blocking part 122, shell body 13, assembly cavity 131, opening 1311, sliding block 1312, protrusion 14, trigger part 15, sheath 20, distal end 21, proximal end 22, sliding rail 23, second limiting part 24, locking part 25, installation channel 251, first abutting part 252, top wall 26, notch 261, annular outer wall 27, sliding channel 271, sliding body 2711, channel opening 2712, annular inner wall 28, elastic stop part 29, second inclined surface 291, first unlocking part 200, first inclined surface 201, monitor support 30, sliding groove 31, matching part 32, fourth inclined surface 321, extension arm 322, buckle block 323, third abutting part 33, installation part 34, perforation 341, pushing part 35, first limiting part 36, installation site 361, first elastic member 40, guide needle support 50, second abutting part 51, third inclined surface 52, second elastic member 60, monitor 70, guide needle 80, needle cover 81, cover 90. DETAILED DESCRIPTION

[0042] The application will be further described below in conjunction with specific embodiments and accompanying drawings. Similar elements in different embodiments are similarly numbered. In the following embodiments, many details are described in order to provide a better understanding of the application. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or replaced by other elements, materials, methods. In some cases, some operations related to the application are not shown or described in the specification, in order to avoid the core part of the application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for those skilled in the art, according to the description in the specification and general technical knowledge in the art.

[0043] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate way to form various embodiments. At the same time, the steps or actions in the method description can also be sequentially adjusted or adjusted in a manner that those skilled in the art can easily see. Therefore, the order in the specification and the drawings is only for the purpose of clearly describing a certain embodiment, and does not mean that it is the necessary order, unless otherwise stated that a certain order must be followed.

[0044] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. Unless otherwise specified, "connection" and "coupling" in this application include direct and indirect connection (coupling).

[0045] The terms "parallel", "perpendicular" and the like are defined in relation to the current process level, rather than the absolute strict definition in the mathematical sense, and a small amount of deviation is allowed, and approximate parallel, approximate perpendicular and the like are also allowed. For example, A is parallel to B, which means that A is parallel to B or approximately parallel to B, and the included angle between A and B is between 0° and 10°. For example, A is perpendicular to B, which means that A is perpendicular to B or approximately perpendicular to B, and the included angle between A and B is between 80° and 100°. The orientation terms mentioned in the embodiments of the present application, such as "upper", "inner", "outer", "side" and the like, are only used with reference to the direction when the product is used, therefore, the orientation terms used are for better and clearer illustration and understanding of the embodiments of the present application, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0046] Most of the existing implant devices currently use button triggering. In order to avoid accidental triggering of the button, anti-triggering parts are added, which requires the user to disassemble the anti-mis-triggering parts before use, causing unnecessary operation for the user. The implant device for an analyte sensor provided by the present application can solve the problem of additional operation caused by the addition of anti-triggering parts.

[0047] Please refer to Figure 1 and Figure 2 , the present application provides an implant device for an analyte sensor (which can be referred to as an implant device), which comprises a shell 10, a sheath 20, a monitor support 30, a first elastic member 40 and a guide needle support 50. As shown in Figure 2 and Figure 3 , the shell 10 has a second unlocking portion 11 and a fourth abutting portion 12. Specifically, the shell 10 also has a shell body 13, and the shell body 13 of the shell 10 is provided with an assembly cavity 131. A part of the sheath 20 is located in the assembly cavity 131. The sheath 20 has a distal end 21 and a proximal end 22 arranged oppositely. The distal end 21 is used to contact the part of the human body where the analyte sensor is to be implanted (which can be referred to as the part of the human body to be implanted). The proximal end 22 is the end away from the part of the human body to be implanted. The second unlocking portion 11 and the fourth abutting portion 12 are arranged on the cavity wall of the assembly cavity 131 and located on the side of the assembly cavity 131 close to the proximal end 22.

[0048] The sheath 20 is movably connected with the shell 10, so that the shell 10 can move towards the distal end 21 relative to the sheath 20 when subjected to a pressing force towards the distal end 21. Specifically, the sheath 20 is slidably connected with the shell 10, as shown in Figure 3 and Figure 4As shown, one of the outer wall of the sheath 20 and the inner wall of the assembly cavity 131 is provided with a sliding block 1312, and the other is provided with a sliding rail 23, the sliding block 1312 cooperates with the sliding rail 23 to make the sheath 20 and the shell 10 slideably connected. Preferably, the sheath 20 and the shell 10 slide relative to each other in a straight line, that is, the sliding rail 23 is a straight sliding rail 23 to ensure the stability of the sliding between the sheath 20 and the shell 10, one end of the sliding rail 23 is close to the proximal end 22, and the other end of the sliding rail 23 is close to the distal end 21, specifically, the extension direction of the sliding rail 23 is parallel to the central axis of the sheath 20. As Figures 3-5 As shown, the second limiting portion 24 is provided on the outer wall of the sheath 20, and the inner wall of the assembly cavity 131 is provided with a protrusion 14, the second limiting portion 24 and the protrusion 14 are at least partially opposite to each other, and at least part of the second limiting portion 24 is stopped on the side of the protrusion 14 away from the distal end 21, to prevent the shell 10 from moving relative to the sheath 20 towards the side close to the proximal end 22.

[0049] As shown, Figure 2 and Figure 6 The monitor support 30 is installed in the sheath 20, and the side of the monitor support 30 towards the distal end 21 is used to install the monitor 70, specifically, as shown, Figure 7 and Figure 8 The sheath 20 is provided with a sliding channel 271 penetrating the proximal end 22 and the distal end 21 of the sheath 20, and the monitor support 30 is connected with the inner wall of the sliding channel 271. At least part of the monitor support 30 is located in the sliding channel 271, and the monitor support 30 can slide in the sliding channel 271 after being unlocked with the sheath 20, the monitor support 30 is provided with a sliding groove 31, and the inner wall of the sliding channel 271 is provided with a sliding body 2711, the sliding groove 31 cooperates with the sliding body 2711, and the sliding groove 31 is a straight sliding groove 31, so that the monitor support 30 and the sheath 20 can slide relative to each other in a straight line, to ensure the stability of the sliding between them.

[0050] As shown, Figure 2 and Figure 6The proximal end 22 of the sheath 20 has a locking portion 25, and the side of the monitor holder 30 close to the proximal end 22 has a matching portion 32 for locking with the locking portion 25, and when the matching portion 32 is locked with the locking portion 25, the monitor holder 30 and the sheath 20 cannot slide relative to each other, that is, the monitor holder 30 and the sheath 20 are relatively locked. The second unlocking portion 11 of the shell 10 is located on the side of the matching portion 32 away from the distal end 21, and when the shell 10 is not subjected to a pressing force, that is, when the implant device is in an initial state, the second unlocking portion 11 is spaced apart from the matching portion 32, and when the shell 10 is subjected to a pressing force, the shell 10 moves relative to the sheath 20 towards the distal end 21, so that the distance between the second unlocking portion 11 and the matching portion 32 gradually decreases until the second unlocking portion 11 abuts against the matching portion 32, and further pressing the shell 10 makes the shell 10 continue to move relative to the sheath 20 towards the distal end 21, so that the second unlocking portion 11 can release the locking of the matching portion 32 and the locking portion 25, and the monitor holder 30 and the sheath 20 can slide relative to each other.

[0051] The first elastic member 40 is installed between the fourth abutting portion 12 of the shell 10 and the monitor holder 30, and specifically, the first elastic member 40 can be a spring. The fourth abutting portion 12 is located on the side of the first elastic member 40 away from the distal end 21, and when the shell 10 is not subjected to a pressing force, one end of the first elastic member 40 abuts against the monitor holder 30, and the other end of the first elastic member 40 can abut against the sheath 20 or the fourth abutting portion 12. The fourth abutting portion 12 is used to abut against the first elastic member 40 before the second unlocking portion 11 abuts against the matching portion 32, and when the shell 10 is subjected to a pressing force, the shell 10 moves relative to the sheath 20 towards the distal end 21, so that the fourth abutting portion 12 abuts against the first elastic member 40, and the shell 10 continues to move relative to the sheath 20 towards the distal end 21, and at this time, the second unlocking portion 11 has not yet abutted against the matching portion 32, that is, the sheath 20 and the monitor holder 30 are relatively fixed, and the fourth abutting portion 12 compresses the first elastic member 40, so that when the shell 10 moves towards the distal end 21, the shell 10 is subjected to the elastic restoring force of the first elastic member 40, that is, the user needs to overcome the elastic restoring force of the first elastic member 40 to continue to move the shell 10 towards the distal end 21, and the shell 10 further moves towards the distal end 21 under the action of the pressing force until the second unlocking portion 11 abuts against the matching portion 32 to be unlocked, and then the sheath 20 and the monitor holder 30 can move relative to each other.

[0052] Before the user presses the housing 10, the locking part 32 is locked with the locking part 25, the second unlocking part 11 is spaced apart from the matching part 32, and the fourth abutting part 12 can or can not abut the first elastic member 40. After the user presses the housing 10, before the second unlocking part 11 abuts the matching part 32, the fourth abutting part 12 will first abut the first elastic member 40, so that before the matching part 32 is unlocked by the second unlocking part 11, the user needs to further press the housing 10 to overcome the elastic restoring force of the first elastic member 40, and further press the housing 10, and the matching part 32 will abut the second unlocking part 11, so that the matching part 32 and the locking part 25 are unlocked.

[0053] In an embodiment, in the initial state of the implanted device, i.e. before the housing 10 moves towards the distal end 21, the distance between the first elastic member 40 and the fourth abutting part 12 is smaller than the distance between the second unlocking part 11 and the matching part 32 in the direction of movement of the housing 10, wherein the distance between the first elastic member 40 and the fourth abutting part 12 can be zero or greater than zero, and the distance between the second unlocking part 11 and the matching part 32 is greater than zero. Thus, it can be ensured that after the housing 10 moves, the abutment between the first elastic member 40 and the fourth abutting part 12 precedes the abutment between the second unlocking part 11 and the matching part 32.

[0054] After the matching part 32 and the locking part 25 are unlocked, the elastic restoring force of the first elastic member 40 can drive the monitor bracket 30 to move relative to the sheath 20 towards the distal end 21. As shown in Figure 2 and Figure 9 The guide needle bracket 50 is arranged on the monitor bracket 30, and the monitor bracket 30 can drive the guide needle bracket 50 to move towards the distal end 21 during the movement of the monitor bracket 30 towards the distal end 21. The guide needle bracket 50 is used to mount the guide needle 80, and the analyte sensor can be arranged on the guide needle 80. The movement of the guide needle bracket 50 towards the distal end 21 can drive the guide needle 80 to move towards the distal end 21 until the guide needle 80 pierces the part of the human body to be implanted, so that the guide needle 80 successfully assists the analyte sensor to be inserted into the human body, so that the analyte sensor can contact the body fluid of the human body, and the monitor 70 can detect the glucose level of the user through the analyte sensor.

[0055] The implanting device of the analyte sensor sets the first elastic member 40 between the shell 10 and the monitor support 30, the fourth abutting part 12 of the shell 10 can abut against the first elastic member 40 before the second unlocking part 11 abuts against the matching part 32, that is, the fourth abutting part 12 abuts against the first elastic member 40 before the monitor support 30 is unlocked from the sheath 20; the force of the accidental touch is usually smaller than the elastic restoring force of the first elastic member 40, when the shell 10 is accidentally touched to make the shell 10 abut against the first elastic member 40, the elastic restoring force of the first elastic member 40 can be used as resistance to resist the force of the accidental touch, the force of the accidental touch is not enough to overcome the elastic restoring force of the first elastic member 40 to make the shell 10 move further to the distal end 21, and when the shell 10 abuts against the first elastic member 40, the second unlocking part 11 has not abutted against the matching part 32, that is, the first elastic member 40 is used as the anti-misoperation part to provide resistance to prevent the unlocking of the matching part 32, thereby achieving the anti-misoperation effect; when the user presses the shell 10, when the pressing force of the user is greater than the elastic restoring force of the first elastic member 40, the shell 10 can be driven to move to the side of the distal end 21 while abutting against the first elastic member 40, so that the second unlocking part 11 of the shell 10 abuts against the matching part 32, the locking between the matching part 32 and the locking part 25 is released, so that the monitor support 30 can move relative to the sheath 20, the monitor support 30 can be driven by the elastic restoring force of the first elastic member 40 to move to the distal end 21, and the guide needle support 50 is driven to move to the distal end 21, so that the guide needle 80 can assist the analyte sensor to be implanted into the human body, the anti-triggering part of the implanting device of the present application is the first elastic member 40, the user does not need to remove the anti-triggering part before use, which does not bring unnecessary operation to the user, and the anti-misoperation function makes the user directly press the shell 10 for triggering during use, which is simple and convenient for the user to operate.

[0056] In an embodiment, as shown in Figure 2 and Figure 3 the matching part 32 has a fourth inclined surface 321, and the second unlocking part 11 has a fifth inclined surface 111, the shell 10 can slide along a straight line relative to the sheath 20, the fourth inclined surface 321 is used to abut against and slide relative to the fifth inclined surface 111, the second unlocking part 11 drives the matching part 32 to move to the direction radially outward, so as to release the locking between the matching part 32 and the locking part 25.

[0057] In an embodiment, as shown in Figure 7 the matching part 32 comprises an extension arm 322 and a buckle block 323 connected with each other, one end of the extension arm 322 close to the proximal end 22 is connected with the buckle block 323, the monitor support 30 has a mounting part 34, and one end of the extension arm 322 close to the distal end 21 is connected with the mounting part 34. One side of the buckle block 323 away from the extension arm 322 has the fourth inclined surface 321, as shown in Figure 4 the locking part 25 has a mounting channel 251 inside, as shown inFigure 2 As shown, when the fitting part 32 is locked with the locking part 25, the end of the extension arm 322 close to the buckle block 323 is located in the installation channel 251, and the side of the buckle block 323 close to the extension arm 322 has a first abutting surface, which abuts with the end surface of the locking part 25 away from the distal end 21, so that the monitor support 30 cannot move towards the distal end 21 under the action of the first elastic member 40, and the installation channel 251 is located radially outward of the first abutting surface. After the second unlocking part 11 pushes the buckle block 323 to move towards the outside, the first abutting surface of the buckle block 323 moves towards the direction of the installation channel 251 until the first abutting surface is separated from the end surface of the locking part 25 away from the distal end 21 and is arranged opposite to the installation channel 251, so that the buckle block 323 is not limited by the locking part 25, and the buckle block 323 can pass through the installation channel 251, and the monitor support 30 can move towards the distal end 21 under the action of the first elastic member 40.

[0058] In an embodiment, as shown in Figure 2 , Figure 3 and Figure 7 , the monitor support 30 has a third abutting part 33, and the shell 10 has a trigger part 15. In the initial state of the implanted device, the trigger part 15 abuts with the side of the third abutting part 33 towards the proximal end 22 to further prevent the user from being mistaken, and when the user applies a pressing force to the shell 10, the trigger part 15 can push the third abutting part 33 to expand outwardly, so that the third abutting part 33 is separated from the movement path of the trigger part 15, and the shell 10 can move towards the distal end 21. When the third abutting part 33 abuts with the trigger part 15, the fourth abutting part 12 of the shell 10 can be spaced from the first elastic member 40, and when the user applies a pressing force, the shell 10 moves towards the distal end 21, so that the fourth abutting part 12 can abut with the first elastic member 40, and when the user further applies a pressing force, the shell 10 further moves towards the distal end 21, so that the second unlocking part 11 abuts with the fitting part 32.

[0059] As shown in Figure 2 and Figure 6As shown, in an embodiment, the proximal end 22 of the sheath 20 has a top wall 26, the first elastic member 40 is arranged between the top wall 26 and the monitor support 30, and the top wall 26 is located on the side of the first elastic member 40 away from the distal end 21. The top wall 26 is provided with a notch 261 penetrating the top wall 26, the first elastic member 40 is exposed to the notch 261, and the notch 261 is used for the fourth abutting part 12 to pass through so that the fourth abutting part 12 can abut the first elastic member 40. In this embodiment, before the shell 10 moves towards the distal end 21, the fourth abutting part 12 of the shell 10 can have a certain distance with the first elastic member 40, that is, the fourth abutting part 12 does not abut the first elastic member 40, and the two ends of the first elastic member 40 abut the top wall 26 and the monitor support 30 respectively. When the shell 10 moves towards the distal end 21 until the fourth abutting part 12 abuts the first elastic member 40, the user can overcome the elastic restoring force of the first elastic member 40 to further press the shell 10, so that the shell 10 pushes the first elastic member 40 to compress, so that the first elastic member 40 is separated from the top wall 26, and the user further presses the shell 10 until the second unlocking part 11 unlocks the fitting part 32 and the locking part 25, and the user completes the triggering process. By providing the notch 261 on the top wall 26, the fourth abutting part 12 can abut the first elastic member 40 installed in the sheath 20, so that the implantable device can realize the anti-misoperation function.

[0060] In an embodiment, as shown in Figure 2 and Figure 3 , the fourth abutting part 12 comprises an abutting wall 121 and a blocking part 122. The number of the abutting wall 121 is at least two, for example, in Figure 3 , the number of the abutting wall 121 is three. The at least two abutting walls 121 are arranged in a circumferential direction of the first elastic member 40. It should be noted that the circumferential direction, radial direction and axial direction described in the present application can refer to the circumferential direction, radial direction and axial direction of the first elastic member 40. The blocking part 122 is protruded on the side of the abutting wall 121 facing the first elastic member 40, the abutting wall 121 is used to abut the first elastic member 40, and the blocking part 122 is located on the inner side of the first elastic member 40 in the radial direction of the first elastic member 40. That is, when the abutting wall 121 abuts the first elastic member 40, the blocking part 122 is located on the inner side of the first elastic member 40, so as to ensure the stability of the abutment between the abutting wall 121 and the first elastic member 40, thereby ensuring the stability of the anti-misoperation function.

[0061] In an embodiment, as shown in Figure 2 , Figure 4 and Figure 8As shown, the sheath 20 has an annular outer wall 27 and an annular inner wall 28, the annular outer wall 27 is provided with a sliding channel 271, the annular outer wall 27 is spacedly sleeved on the outer periphery of the annular inner wall 28, that is, the annular inner wall 28 is located inside the sliding channel 271, the top wall 26 is connected to the side of the annular outer wall 27 and the side of the annular inner wall 28 away from the distal end 21; the first elastic member 40 is assembled between the annular outer wall 27 and the annular inner wall 28, so as to be sleeved on the outer periphery of the annular inner wall 28. The gap between the annular outer wall 27 and the annular inner wall 28 is communicated with the notch 261, so that the notch 261 can expose the first elastic member 40.

[0062] Further, as shown in Figure 2 and Figure 7 , the monitor support 30 has a mounting portion 34, which is arranged in the sliding channel 271 and located on the side of the annular inner wall 28 away from the proximal end 22. The fitting portion 32 is connected to the side of the mounting portion 34 away from the distal end 21, and before the fitting portion 32 is unlocked, the fitting portion 32 is located on the inner side of the annular inner wall 28, and the inner wall of the annular inner wall 28 close to the proximal end 22 is provided with a locking portion 25, which is locked with the fitting portion 32. Part of the structure of the mounting portion 34 is arranged opposite to the space on the inner side of the annular inner wall 28, and another part of the structure of the mounting portion 34 is arranged opposite to the gap between the annular inner wall 28 and the annular outer wall 27, so that the other part of the structure of the mounting portion 34 can abut against the first elastic member 40, that is, the first elastic member 40 can abut against the mounting portion 34.

[0063] In an embodiment, as shown in Figure 3 and Figure 4 , the number of notches 261 and fourth abutting portions 12 is at least two, and the at least two notches 261 are arranged in a spaced manner along the circumference, and each fourth abutting portion 12 is arranged opposite to each notch 261. As shown in Figure 6 , each notch 261 can expose different parts of the first elastic member 40 in the circumferential direction, so that each fourth abutting portion 12 can extend into the corresponding notch 261 to abut against different parts of the first elastic member 40 in the circumferential direction. Thus, the user can press the shell 10 with relatively uniform resistance at each position in the circumferential direction of the shell 10.

[0064] In an embodiment, as shown in Figure 2As shown, the implantation device also includes a guide needle 80. The assembly cavity 131 has an opening 1311 on the side near the distal end 21, and the sliding channel 271 has a channel opening 2712 on the side near the distal end 21. When the mating part 32 and the locking part 25 are locked, the guide needle 80 is located inside the sheath 20, and there is a gap between the guide needle 80 and the channel opening 2712. Thus, when the user initially places the distal end 21 of the sheath 20 against the implantation site on the human body, there will be a gap between the guide needle 80 and the implantation site on the human body; this prevents the guide needle 80 from contacting the skin when the sheath 20 is initially placed against the human body, thus preventing an unpleasant experience for the user.

[0065] In some embodiments, such as Figure 2 and Figure 10 As shown, the implantation device may further include a cap 90, which is disposed on the side of the housing 10 near the distal end 21 to close the opening 1311 of the housing 10 and the channel opening 2712 of the sliding channel 271 of the sheath 20, thereby protecting the various components within the sheath 20. The cap 90 may be detachably connected to the housing 10, for example, by means of a snap-fit ​​connection, a threaded connection, a magnetic connection, etc.

[0066] In one embodiment, such as Figure 2 and Figure 9 As shown, the monitor bracket 30 has a pushing part 35, which is connected to the side of the mounting part 34 away from the distal end 21. The pushing part 35 is located inside the annular inner wall 28. The guide needle bracket 50 has a second abutment part 51, which is located on the movement path of the pushing part 35. The pushing part 35 is used to push the second abutment part 51 when the monitor bracket 30 moves toward the distal end 21. That is, during the process of the monitor bracket 30 moving toward the distal end 21 under the action of the first elastic member 40, the pushing part 35 can abut against the second abutment part 51 on the side away from the distal end 21, and push the second abutment part 51 under the action of the first elastic member 40, so that the second abutment part 51 also moves toward the distal end 21. Thus, the guide needle 80 can be used to assist the insertion of the analyzer sensor into the human body.

[0067] In one embodiment, such as Figure 4 , Figure 6 and Figure 11 As shown, the sheath 20 has an elastic stop portion 29. Before the pushing portion 35 abuts against the second abutting portion 51, the pushing portion 35 and the second abutting portion 51 are spaced apart. The elastic stop portion 29 limits the guide needle holder 50 on the side of the guide needle holder 50 near the proximal end 22. The implantation device also includes a second elastic member 60, which is installed between the mounting portion 34 of the monitor holder 30 and the guide needle holder 50. A portion of the structure of the mounting portion 34 of the monitor holder 30 is located on the side of the second elastic member 60 facing the distal end 21. The second elastic member 60 has an elastic restoring force towards the proximal end 22.

[0068] As shown in Figure 7 and Figure 11 , the monitor support 30 has a first limiting portion 36, which is located outside the elastic stop portion 29 before the pushing portion 35 abuts against the second abutting portion 51, so as to limit the elastic stop portion 29 on the outside, and the elastic stop portion 29 has a spring force outwardly expanding under the limitation of the first limiting portion 36. The elastic stop portion 29 has a second inclined surface 291, and the guide needle support 50 has a third inclined surface 52, the second inclined surface 291 is used to abut against the third inclined surface 52, thereby the elastic stop portion 29 limits the guide needle support 50 so that the guide needle support 50 cannot move towards the proximal end 22. When the guide needle support 50 needs to move towards the proximal end 22, the third inclined surface 52 has a tendency to push the second inclined surface 291 towards the proximal end 22 and the outside, and the first limiting portion 36 limits the elastic stop portion 29 on the outside so that the elastic stop portion 29 cannot move towards the outside, thereby preventing the guide needle support 50 from moving towards the proximal end 22 at this time.

[0069] Thus, the guide needle support 50 has a tendency to move towards the proximal end 22 under the elastic restoring force of the second elastic member 60, but the elastic stop portion 29 abuts against the guide needle support 50 on the other side away from the second elastic member 60, so that the guide needle support 50 keeps the position unchanged under the action of the elastic stop portion 29 and the second elastic member 60 before the pushing portion 35 abuts against the second abutting portion 51.

[0070] As can be seen from Figure 2 , the guide needle 80 is provided with a needle sleeve 81, and the needle sleeve 81 has a part of structure exceeding the end face of the monitor support 30 towards the distal end 21, if the guide needle support 50 directly synchronously moves with the monitor support 30 when the cooperation portion 32 is unlocked with the locking portion 25, the needle sleeve 81 will hinder the monitor 70 from being attached to the human skin, therefore, the embodiment sets the elastic stop portion 29 and the second elastic member 60, after the cooperation portion 32 is unlocked with the locking portion 25, when the monitor support 30 starts to move towards the distal end 21, the guide needle support 50 keeps the position unchanged under the action of the elastic stop portion 29 and the second elastic member 60, until the monitor support 30 moves to the abutting position of the pushing portion 35 and the second abutting portion 51, at this time, the distal end 21 of the monitor support 30 is flush with the distal end 21 of the needle sleeve 81, the elastic restoring force of the first elastic member 40 is greater than the elastic restoring force of the second elastic member 60, thereby the pushing portion 35 can push the second abutting portion 51 to move towards the distal end 21, so that the monitor support 30 synchronously moves with the guide needle support 50.

[0071] As described in the background, the present application needs to solve the problem that the sheath 20 is retracted before the guide needle support 50 is retracted, resulting in a high failure rate of analyte sensor implantation. Based on this, the implantation device can include a shell 10, a sheath 20, a monitor support 30, a first elastic member 40, a guide needle support 50, and a second elastic member 60. The sheath 20 has a distal end 21 and a proximal end 22 arranged opposite to each other, and the distal end 21 is used to contact the implantation site of the human body. The sheath 20 is movably connected with the shell 10, so that the shell 10 can move towards the distal end 21 relative to the sheath 20. The sheath 20 has a locking portion 25. The monitor support 30 is used to install a monitor 70. The monitor support 30 has a matching portion 32, and the matching portion 32 is used to lock with the locking portion 25. The shell 10 is used to abut against the matching portion 32 to release the locking between the matching portion 32 and the locking portion 25. The first elastic member 40 is installed between the sheath 20 and the monitor support 30. The shell 10 is used to abut against the first elastic member 40 before abutting against the matching portion 32, so that one end of the first elastic member 40 abuts against the shell 10, and the other end of the first elastic member 40 abuts against the monitor support 30. After the matching portion 32 and the locking portion 25 are released, the first elastic member 40 can drive the monitor support 30 to move towards the distal end 21. The guide needle support 50 is used to install a guide needle 80, and the monitor support 30 can drive the guide needle support 50 to move towards the distal end 21 when moving towards the distal end 21. The specific description of each feature of the embodiments and the following embodiments can refer to the description of the above embodiments, and can be combined with any of the above embodiments to have the same features and achieve the same effect, which will not be repeated here.

[0072] The second elastic member 60 is arranged between the monitor support 30 and the guide needle support 50, and the second elastic member 60 is used to drive the guide needle support 50 to move towards the proximal end 22 after the guide needle support 50 moves to a preset position towards the distal end 21. When the guide needle support 50 moves to the preset position, the guide needle 80 should have assisted the analyte sensor to penetrate into the implantation site of the human body, and the surface of the monitor 70 towards the distal end 21 can have an adhesive member. The adhesive member of the monitor 70 is pasted on the implantation site of the human body. When the monitor support 30 and the guide needle support 50 move synchronously to the preset position of the guide needle support 50, the monitor support 30 can release the pushing of the guide needle support 50, so that the guide needle support 50 can move towards the proximal end 22 under the elastic restoring force of the second elastic member 60, while the monitor 70 and the analyte sensor remain on the implantation site of the human body under the action of the adhesive member.

[0073] When the guide needle support 50 moves towards the proximal end 22, it can abut against the sheath 20 to push the sheath 20 to move synchronously, so that the sheath 20 moves away from the implantation site of the human body, and the sheath 20 is retracted into the interior of the shell 10. The state that the sheath 20 is completely retracted into the interior of the shell 10 can refer to Figure 12 .

[0074] The implanting device, the shell 10 is the part pressed by the user to drive the shell 10 to move relative to the sheath 20 to release the lock of the monitor support 30 and the sheath 20, and the shell 10 will abut against the first elastic member 40 in the sheath 20 before abutting against the monitor support 30, so that when the monitor support 30 is unlocked with the sheath 20, one end of the first elastic member 40 abuts against the shell 10 and the other end of the first elastic member 40 abuts against the monitor support 30, thereby, when the monitor support 30 is unlocked with the sheath 20, the end of the first elastic member 40 away from the monitor support 30 abuts against the shell 10 instead of the sheath 20, thus preventing the problem that the first elastic member 40 pushes the sheath 20 to retract at the moment when the monitor support 30 is unlocked with the sheath 20, so that the position of the sheath 20 is relatively stable when the monitor support 30 moves towards the part to be implanted of the human body, preventing the sheath 20 from triggering the needle support 50 to retract in advance, so as to improve the success rate of implanting the analyte sensor, and the sheath 20 will not retract when the monitor support 30 moves towards the part to be implanted of the human body, but the sheath 20 is retracted by the needle support 50 after the needle support 50 is retracted, i.e. after the analyte sensor is implanted, so the timing of the sheath 20 retraction will not affect the implanting of the analyte sensor.

[0075] In addition, the sheath 20 is retracted when the needle support 50 is retracted, which can reduce the sound of the needle support 50 retracting into the shell 10, and the needle support 50 will not directly impact the shell 10 during the retraction process, but first abuts against the sheath 20 and is retracted into the shell 10 synchronously with the sheath 20, greatly reducing the sound of the needle support 50 retracting into the shell 10 and improving the user experience.

[0076] In an embodiment, as shown in Figure 2 the shell 10 is provided with an assembly cavity 131, at least part of the sheath 20 is located in the assembly cavity 131 and is in sliding connection with the shell 10, the assembly cavity 131 is provided with an opening 1311 on the side close to the distal end 21, and before the needle support 50 drives the sheath 20 to move, the distal end 21 of the sheath 20 is arranged outside the assembly cavity 131 through the opening 1311, or the end face of the distal end 21 of the sheath 20 is flush with the opening 1311. Figure 12 After the needle support 50 drives the sheath 20 to move, the sheath 20 can abut against the cavity wall of the assembly cavity 131 close to the proximal end 22, and the distal end 21 of the sheath 20 is located in the assembly cavity 131, i.e. the sheath 20 completes the process of retracting into the shell 10.

[0077] In an embodiment, as shown in Figure 2 the sheath 20 is provided with a sliding channel 271 penetrating through the sheath 20, and the monitor support 30 can slide in the sliding channel 271 after the cooperation part 32 and the locking part 25 are unlocked. Figure 6 andFigure 7 As shown, the monitor support 30 is provided with a mounting position 361, and the guide needle support 50 is mounted on the mounting position 361. The proximal end 22 of the sheath 20 is provided with a first abutting portion 252 and a locking portion 25. The first abutting portion 252 is arranged on a movement path of the guide needle support 50 when the guide needle support 50 moves towards the proximal end 22, so as to abut against the guide needle support 50. That is, the guide needle support 50 first moves independently towards the proximal end 22 relative to the sheath 20. After the guide needle support 50 moves to abut against the first abutting portion 252, the guide needle support 50 can push the first abutting portion 252 of the sheath 20, so that the guide needle support 50 and the sheath 20 are retracted synchronously. In an embodiment, the first abutting portion 252 and the locking portion 25 can be located on the inner side of the annular inner wall 28. In an embodiment, the first abutting portion 252 is arranged on the locking portion 25. Figure 6 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21.

[0078] As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 2 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 2 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 13 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 4 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 7 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 4 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 7 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 13 As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21.

[0079] As shown, the monitor support 30 is provided with a pushing portion 35, and the guide needle support 50 is provided with a second abutting portion 51. Before the cooperating portion 32 is unlocked, the second abutting portion 51 is located on a movement path of the pushing portion 35, and the pushing portion 35 is used to push the second abutting portion 51 when the monitor support 30 moves towards the distal end 21. Figure 6As shown, the sheath 20 has an elastic stop 29; before the pushing part 35 abuts against the second abutting part 51, the pushing part 35 is spaced from the second abutting part 51, the elastic stop 29 limits the guide needle holder 50 on the side close to the proximal end 22, and the second elastic member 60 has an elastic restoring force towards the proximal end 22; as shown, Figure 11 As shown, the monitor holder 30 has a first limiting part 36, which is located outside the elastic stop 29 before the pushing part 35 abuts against the second abutting part 51, so as to limit the elastic stop 29 to expand outwardly. In an embodiment, the elastic stop 29 has a second slope 291, and the guide needle holder 50 has a third slope 52, the second slope 291 is used to abut against the third slope 52, so as to limit the guide needle holder 50. The above process has been described in detail in the foregoing, and it needs to be explained that after the pushing part 35 abuts against the second abutting part 51, the first limiting part 36 moves downwardly to a position separated from the elastic stop 29, and the elastic stop 29 expands outwardly under the action of its own elastic restoring force, so as to be separated from the movement path of the guide needle holder 50, thereby preventing the elastic stop 29 from affecting the retraction of the guide needle holder 50 when the guide needle holder 50 moves towards the proximal end 22.

[0080] In an embodiment, as shown, Figure 2 As shown, the sheath 20 has an annular outer wall 27 and an annular inner wall 28, and the annular outer wall 27 is sleeved on the outer periphery of the annular inner wall 28; the monitor holder 30 has a mounting part 34, which is located on the side of the annular inner wall 28 away from the proximal end 22; as shown, Figure 2 and Figure 9 As shown, the cooperation part 32, the pushing part 35, the third abutting part 33 and the first limiting part 36 are connected to the side of the mounting part 34 away from the distal end 21. Among them, the cooperation part 32, the pushing part 35 and the third abutting part 33 are all elastic arm structures, one end of the elastic arm structure is connected to the mounting part 34, and the other end of the elastic arm structure extends towards the side away from the mounting part 34, so as to form an elongated arm, and the elongated structure enables the elastic arm structure to be offset towards the inner side or the outer side relative to the mounting part 34, so as to realize the unlocking function of each process. Before the cooperation part 32 is unlocked, the cooperation part 32, the pushing part 35 and the third abutting part 33 are all located on the inner side of the annular inner wall 28, the first limiting part 36 and the first elastic member 40 are located between the annular outer wall 27 and the annular inner wall 28, and the first elastic member 40 abuts on the mounting part 34. As shown, Figure 4 As shown, the annular inner wall 28 is provided with the elastic stop 29 and the first unlocking part 200.

[0081] In an embodiment, as shown, Figure 2 and Figure 7As shown, the guide needle holder 50 is located on the side of the mounting portion 34 near the proximal end 22, and is located inside the pushing portion 35, the mating portion 32, and the third abutment portion 33. The second elastic member 60 is located between the mounting portion 34 and the guide needle holder 50. The mounting portion 34 is provided with a through hole 341 for the guide needle 80 to pass through the mounting portion 34, and the side of the mounting portion 34 near the distal end 21 is used to mount the monitor 70.

[0082] like Figure 2 As shown, the movement and use of the implantation device are as follows: The user removes the cap 90 from the housing 10 and places the distal end 21 of the sheath 20 against the implantation site on the body. This is the initial state. The trigger part 15 of the housing 10 abuts against the proximal end 22 of the third abutment part 33. The second unlocking part 11 of the housing 10 is spaced apart from the mating part 32. The fourth abutment part 12 of the housing 10 is spaced apart from or abuts against the first elastic member 40. Figure 2 In the middle, the fourth abutting part 12 and the first elastic member 40 abut against each other, the first elastic member 40 abuts against the top wall 26 of the sheath 20, the mating part 32 and the locking part 25 are locked together, the elastic stop part 29 of the sheath 20 limits the guide needle bracket 50 on the side of the guide needle bracket 50 near the proximal end 22, the first elastic member 40 and the second elastic member 60 both have elastic restoring force, and the pushing part 35 is spaced apart from the second abutting part 51.

[0083] The user presses the housing 10 toward the distal end 21 of the sheath 20. The trigger part 15 pushes the third abutment part 33 outward, allowing the housing 10 to move downward toward the distal end 21. During the downward movement of the housing 10, the fourth abutment part 12 of the housing 10 first passes through the notch 261 of the sheath 20 and abuts against the first elastic member 40. The housing 10 continues to move downward, causing the first elastic member 40 to compress and separate from the top wall 26. Then, the housing 10 continues to move downward, and the second unlocking part 11 abuts against the mating part 32 to unlock the lock between the mating part 32 and the locking part 25. The user completes the triggering process.

[0084] After the locking between the mating part 32 and the locking part 25 is released, the monitor bracket 30 moves toward the distal end 21 under the action of the elastic restoring force of the first elastic member 40, while the guide needle bracket 50 remains in a fixed position under the action of the second elastic member 60 and the elastic stop part 29 until the monitor bracket 30 moves down to the point where the pushing part 35 abuts against the second abutting part 51, and the monitor bracket 30 drives the guide needle bracket 50 to move down synchronously.

[0085] like Figure 13As shown, when the monitor support 30 moves downward to abut against the first unlocking portion 200 and the third abutting portion 33, the first unlocking portion 200 pushes the third abutting portion 33 to offset towards the inner side, the third abutting portion 33 drives the pushing portion 35, so that the pushing portion 35 is separated from the second abutting portion 51, thereby releasing the restriction of the monitor support 30 on the guide needle support 50. At this time, the monitor 70 has been pasted on the human body, and the guide needle 80 has assisted the implantation of the analyte sensor into the human body. Under the action of the second elastic member 60, the guide needle support 50 moves and retracts towards the proximal end 22 side, as shown in Figure 6 As shown, when the guide needle support 50 moves to the proximal end 22 of the sheath 20, the guide needle support 50 pushes the first abutting portion 252 of the sheath 20, so that the guide needle support 50 and the sheath 20 are retracted synchronously. Finally, as shown in Figure 12 As shown, the sheath 20 and the guide needle support 50 are completely retracted into the housing 10, and the whole process of the implantation device assisting the analyte sensor to be implanted into the human body and retracted by the guide needle 80 is completed.

[0086] The above application of specific examples is used to illustrate the present application, which is only used to help understand the present application, and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. An implantation device for an analyte sensor, characterized by The application relates to a device for implanting a monitoring instrument into a human body, which comprises the following parts: a shell; a sheath, which has a distal end and a proximal end arranged oppositely, the distal end being used for contacting a part of the human body to be implanted; the sheath is movably connected with the shell, so that the shell can move towards the distal end relative to the sheath; the sheath has a locking part; a monitoring instrument support, which is used for mounting a monitoring instrument; the monitoring instrument support has a matching part, which is used for locking with the locking part; the shell is used for abutting against the matching part to release the locking between the matching part and the locking part; a first elastic member, which is mounted between the sheath and the monitoring instrument support; the shell is used for abutting against the first elastic member before abutting against the matching part, so that one end of the first elastic member abuts against the shell and the other end of the first elastic member abuts against the monitoring instrument support; after the matching part is released from the locking with the locking part, the first elastic member can drive the monitoring instrument support to move towards the distal end; a guide needle support, which is used for mounting a guide needle; when the monitoring instrument support moves towards the distal end, the guide needle support can be driven to move towards the distal end; and a second elastic member, which is arranged between the monitoring instrument support and the guide needle support; the second elastic member is used for driving the guide needle support to move towards the proximal end after the guide needle support moves towards the distal end to a preset position; when the guide needle support moves towards the proximal end, the guide needle support can abut against the sheath to push the sheath to move synchronously; the monitoring instrument support has a pushing part, the guide needle support has a second abutting part, the second abutting part is located on a movement path of the pushing part before the matching part is released from the locking, and the pushing part is used for pushing the second abutting part when the monitoring instrument support moves towards the distal end; the sheath has a first unlocking part, which is used for releasing the stop of the pushing part on the second abutting part after the guide needle support moves to the preset position; the monitoring instrument support has a third abutting part, which is connected with the pushing part in a circumferential direction, the first unlocking part has a first inclined surface, and when the guide needle support moves towards the distal end to the preset position, the third abutting part can abut against and slide on the first inclined surface, the first inclined surface is used for guiding the third abutting part, so that the third abutting part drives the pushing part to move out of the movement path of the second abutting part; the sheath has an elastic stop part; before the pushing part abuts against the second abutting part, the pushing part is spaced from the second abutting part, the elastic stop part limits the guide needle support on a side of the guide needle support close to the proximal end, and the second elastic member has an elastic restoring force towards the proximal end. The monitoring instrument support has a first limiting portion, which is located outside the elastic stop portion before the pushing portion and the second abutting portion abut, so as to limit the elastic stop portion, and which is separated from the elastic stop portion after the pushing portion and the second abutting portion abut, and the elastic stop portion is outwardly expanded under the elastic force of the elastic stop portion, so as to be separated from the movement path of the guide needle support.

2. The implantation device of an analyte sensor according to claim 1, characterized in that The shell is provided with an assembly cavity, at least part of the sheath is located in the assembly cavity and is in sliding connection with the shell, an opening is formed on one side of the assembly cavity close to the distal end, and the distal end of the sheath is arranged outside the assembly cavity through the opening before the guide needle support pushes the sheath to move, or the end surface of the distal end of the sheath is flush with the opening; after the guide needle support pushes the sheath to move, the sheath can abut against the cavity wall of the assembly cavity close to the proximal end, and the distal end of the sheath is located in the assembly cavity.

3. The implantation device of an analyte sensor according to claim 1, wherein, The sheath is provided with a sliding channel penetrating through the sheath, and the monitoring instrument support can slide in the sliding channel; the monitoring instrument support is provided with a mounting position, and the guide needle support is mounted on the mounting position; the proximal end is provided with a first abutting portion and the locking portion, and the first abutting portion is arranged on the movement path of the guide needle support when the guide needle support moves towards the proximal end, so as to abut against the guide needle support.

4. The implantation device of an analyte sensor according to claim 1, wherein, The elastic stop portion has a second inclined surface, the guide needle support has a third inclined surface, and the second inclined surface is used to abut against the third inclined surface to limit the guide needle support.

5. The implantation device of an analyte sensor according to claim 1, wherein, The sheath has an annular outer wall and an annular inner wall, the annular outer wall is sleeved on the outer periphery of the annular inner wall, the monitoring instrument support has a mounting portion, the mounting portion is located on one side of the annular inner wall away from the proximal end, the cooperation portion, the pushing portion and the first limiting portion are connected to one side of the mounting portion away from the distal end, and before the cooperation portion is unlocked, the cooperation portion and the pushing portion are located on the inner side of the annular inner wall, and the first limiting portion and the first elastic member are located between the annular outer wall and the annular inner wall; the annular inner wall is provided with the elastic stop portion and the first unlocking portion, and the first elastic member abuts against the mounting portion.

6. The implantation device of an analyte sensor according to claim 5, wherein, The guide needle support is located on one side of the mounting portion close to the proximal end, and the guide needle support is located on the inner side of the pushing portion and the cooperation portion; the second elastic member is located between the mounting portion and the guide needle support; the mounting portion is provided with a through hole, the through hole is used for the guide needle to pass through the mounting portion, and one side of the mounting portion close to the distal end is used for mounting a monitoring instrument.

7. The implantation device of an analyte sensor according to claim 1, wherein, The proximal end has a top wall, the top wall is located on one side of the first elastic member away from the distal end, the first elastic member is assembled between the top wall and the monitoring instrument support, the top wall is provided with a notch penetrating through the top wall, the first elastic member is exposed to the notch, the shell has a fourth abutting portion, the notch is used for the fourth abutting portion to pass through, so that the fourth abutting portion can abut against the first elastic member.

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