Subcutaneous implant device

Abstract

The present invention relates to a subcutaneous implant device, comprising an applicator, an implant seat, a slider, a sensor seat, a needle seat, an implant needle, a sensor, a base, a driving device, and a releasing device. One end of the implant seat is provided with an implant hole; the slider is slidably mounted in the implant seat and is located on one side of the implant hole; the sensor seat is movably mounted on one end of the slider; the needle seat is mounted on the slider; the implant needle is fixed on the needle seat and movably inserted into the sensor seat; the sensor is mounted in the implant needle, and the connecting plate of the sensor is mounted on the sensor seat; the base is movably inserted into the implant hole, and a fixing device arranged opposite to the sensor seat is provided on the base, and the applicator is fixed to the bottom of the base; the driving device is mounted on the implant seat, the driving device is connected to the slider, and is used to drive the slider to drive the sensor and implant needle to be implanted into the human body, and to push the base out of the implant hole; the releasing device is mounted on the implant seat and is connected to the driving device, and is used to release the driving device. The device has a simple structure and a good user experience.

Description

Technical Field

[0001] The present invention relates to a device for implanting a sensor subcutaneously, in particular to a subcutaneous implantation device. Background Art

[0002] Subcutaneous implantable sensors are used for subcutaneous analyte measurement or transcutaneous monitoring. These sensors, typically based on electrochemical or optical sensors, measure and analyze target analytes in subcutaneous tissue fluid to determine their presence or concentration. These sensors are implanted subcutaneously at the target site, enabling continuous, real-time monitoring and periodically uploading data to a host computer or cloud server via an external transmitter.

[0003] Typical subcutaneous implantable sensors, such as continuous glucose monitoring sensors, are implanted beneath the skin to continuously measure glucose concentration and changes in the interstitial fluid. When glucose in the interstitial fluid diffuses around the sensor, the sensor's transducer-sensitive cells convert the glucose concentration into an electrical signal for digital acquisition. This data is then processed using a specific algorithm and displayed as glucose concentration.

[0004] Currently, more and more continuous blood glucose sensors have abandoned the rigid steel needle form and adopted thin-film flexible microneedle sensors based on flexible substrates. The advantages of this type of flexible sensor are obvious. It can provide users with a better user experience. In particular, after implantation, the flexible microneedle can bend to a certain extent with the user's limb movement, which can greatly reduce physical damage to the implant site and greatly alleviate the user's foreign body sensation. However, due to the softness of this type of flexible microneedle sensor, its own strength cannot sustain the force to penetrate the skin during the implantation process, resulting in it being unable to be directly implanted in the subcutaneous area. The implanter and implantation method previously suitable for rigid steel needle sensors are no longer applicable. Therefore, how to implant flexible sensors subcutaneously is an urgent problem to be solved. Summary of the Invention

[0005] To solve the above problems, the present invention provides a subcutaneous implant device with fast implantation and withdrawal speed, stable angle, and simple structure. The specific technical solution is as follows:

[0006] 14. The implantation device of claim 13, wherein the implantation hole is formed on one end of the implantation seat; the slider is slidably mounted in the implantation seat and is located on one side of the implantation hole; the sensor seat is movably mounted on one end of the slider; the needle seat is mounted on the slider and is located on the top of the sensor seat; the implantation needle is fixed on the needle seat and movably inserted into the sensor seat; the sensor is mounted in the implantation needle, and the connecting plate of the sensor is mounted on the sensor seat; the base is movably inserted into the implantation hole, the base is provided with a fixing device arranged opposite to the sensor seat, and the implantation device is fixed to the bottom of the base; the driving device is mounted on the implantation seat, the driving device is connected to the slider, and is used to drive the slider to drive the sensor and the implantation needle to be implanted into the human body and to push the base out of the implantation hole; and the releasing device is mounted on the implantation seat and connected to the driving device to release the driving device.

[0007] Preferably, a sliding groove is provided on the implant seat, the sliding groove is located at one end of the implant hole and is communicated with the implant hole; the slider is slidably inserted in the sliding groove, and a guide seat is provided on the slider, and the guide seat is slidably inserted on the sliding groove.

[0008] Preferably, the driving device includes: a driving seat, an eccentric shaft is provided on the driving seat, the eccentric shaft is movably inserted in the driving groove, the driving groove is provided on the slider, and the driving groove is perpendicular to the moving direction of the slider; a coil spring, one end of the coil spring is connected to the driving seat; a winding seat, the winding seat is rotatably mounted on the driving seat and connected to the other end of the coil spring, a pawl is provided on the winding seat, and the pawl is arranged opposite to the ratchet provided on the implant seat; and a handle, the handle is mounted on the winding seat and is located outside the implant seat.

[0009] Furthermore, it also includes: a pressure cover, which is fixed on the rotating shaft at the top of the winding seat, and the rotating shaft is rotatably installed in the rotating hole of the implant seat, and the winding seat and the pressure cover are respectively located on both sides of the rotating hole.

[0010] A slot is provided on the top of the winding seat, and an insert block matching the slot is provided on the handle. The insert block is movably inserted into the slot, and the insert block and the slot are used for the handle to drive the winding seat to rotate.

[0011] Preferably, the release device includes: a release seat, which is rotatably mounted on the implant seat and is located on one side of the drive seat, a plurality of locking grooves are provided in an annular array on the bottom of the release seat, a release shaft is provided on the top of the release seat, and a plurality of release blocks and positioning blocks are provided in an annular array on the release shaft, the positioning block is located between the release block and the release seat, and the positioning block and the release block are staggered; a release switch, the release switch is slidably inserted on the implant seat and the release shaft, and a plurality of release limit blocks and anti-rotation blocks are provided on the release switch, the release limit block is movably inserted between adjacent release blocks or positioning blocks, and the anti-rotation block is movably inserted in the anti-rotation groove of the implant seat; and a locking block, the locking block is provided on one side of the drive seat and movably inserted in the locking groove; when the release limit block is located on one side of the release block or the positioning block, the locking block is inserted in the locking groove, and when the release limit block moves from the release block to the positioning block, the release seat rotates, and the locking block leaves the locking groove and is reinserted into the locking groove after rotating one circle.

[0012] Wherein, the release switch is provided with an anti-falling block, and the anti-falling block is located inside the implant seat.

[0013] Preferably, one end of the slider is provided with at least two first movable buckles symmetrically arranged, and the sensor base is movably mounted on the first movable buckles; the base is provided with a fixing groove and a fixing buckle, and the fixing groove and the fixing buckle are used to fix the sensor base.

[0014] Furthermore, the slider is symmetrically provided with no less than two second movable buckles, and the needle seat is mounted on the second movable buckles.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The subcutaneous implant device provided by the present invention has a simple structure, few parts, low cost, fast implantation and withdrawal speed, stable implantation angle, and is not likely to bring out the sensor when the needle is withdrawn. It is easy to operate and provides a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of a subcutaneous implant device;

[0018] Figure 2 is a side view of a subcutaneous implantable device;

[0019] Figure 3 is a cross-sectional view of a subcutaneous implant device;

[0020] Figure 4 This is an exploded view of a subcutaneous implant device;

[0021] Figure 5 It is a partial structural diagram of the release device and the drive device;

[0022] Figure 6 It is a structural diagram of the drive seat;

[0023] Figure 7 It is a structural diagram of the winding seat;

[0024] Figure 8 It is a structural diagram of the release seat;

[0025] Figure 9 It is a structural diagram of the release switch;

[0026] Figure 10 It is a structural diagram of the slider with the sensor seat and needle seat installed;

[0027] Figure 11 It is a schematic diagram of the exploded structure of the needle seat, implant needle, sensor, and sensor seat;

[0028] Figure 12 It is a structural diagram of the base;

[0029] Figure 13 It is a schematic diagram of the structure of the base, sensor, sensor seat and patch when implanted into the human body. DETAILED DESCRIPTION

[0030] The present invention will now be further described with reference to the accompanying drawings.

[0031] like Figures 1 to 13 As shown, a subcutaneous implant device includes an applicator 87, an implant seat, a slider 2, a sensor seat 84, a needle seat 83, an implant needle 82, a sensor 86, a base 81, a driving device and a releasing device.

[0032] The implant seat is a shell, including an upper cover 11 and a lower cover 12, and the upper cover 11 and the lower cover 12 are connected by screws. A release hole 17 and a rotation hole 19 are provided on the top of the upper cover 11. The release hole 17 is provided with a plurality of anti-rotation grooves 18, and the anti-rotation grooves 18 are arranged along the axis of the release hole 17. A ratchet 10 is provided at the bottom of the rotation hole 19, and the ratchet 10 is arranged in a ring array. A sliding groove 13 and a positioning shaft 16 are provided on the lower cover 12. A connecting seat 14 is provided at one end of the lower cover 12. An implant hole 15 is provided on the connecting seat 14. The implant hole 15 is located at one end of the sliding groove 13, and the implant hole 15 is communicated with the sliding groove 13. The base 81 is movably inserted into the implant hole 15. The positioning shaft 16 is located at the other end of the sliding groove 13.

[0033] The patch 87 is fixed to the bottom of the base 81 .

[0034] The slider 2 is provided with a guide seat 21, which slides into the sliding groove 13 to guide the slider 2 and limit the position of the slider 2 so that the slider 2 can only move back and forth along the axis of the sliding groove 13. The guide seat 21 is provided with a drive groove 22, which is a waist-shaped groove. The length direction of the drive groove 22 is perpendicular to the movement direction of the slider 2.

[0035] One end of the slider 2 is symmetrically provided with a first movable buckle 23 and a second movable buckle 24. The second movable buckle 24 is located above one side of the first movable buckle 23. The sensor base 84 is movably mounted on the first movable buckle 23, and the needle base 83 is movably mounted on the second movable buckle 24. The second movable buckle 24 facilitates replacement of the needle base 83, allowing the subcutaneous implant device to be reused.

[0036] Implant needle 82 is a C-shaped needle with an opening. It is fixed to needle holder 83. Sensor 86 is provided with a connecting plate 861, which is equipped with contacts for connecting to a detector that detects relevant data in the human body (e.g., blood glucose concentration). Sensor 86 is removably inserted into implant needle 82 and connected to connecting plate 861 through the opening in implant needle 82. Sensor holder 84 is provided with a mounting slot 841, into which connecting plate 861 is mounted via a sealing gasket 85.

[0037] The base 81 is provided with a fixing groove 811 and a fixing buckle 812 . The fixing groove 811 matches the sensor base 84 . When the sensor base 84 is inserted into the fixing groove 811 , the fixing buckle 812 is clamped on the sensor base 84 . The fixing groove 811 and the fixing buckle 812 fix the sensor base 84 .

[0038] The drive device includes a drive seat 3, a coil spring 41, a winding seat 5, a handle 43, and a pressure cover 42. A locking block 31 is provided on one side of the drive seat 3. A spring slot 32 is provided on the drive seat 3. The coil spring 41 is movably inserted into the spring slot 32. One end of the coil spring 41 is fixed to a fixed slot 35 on one side of the drive seat 3. An eccentric shaft 33 is provided at the bottom of the drive seat 3. The eccentric shaft 33 is movably inserted into the drive slot 22. A winding shaft 51 is provided on the winding seat 5. The winding shaft 51 is rotatably mounted on the drive seat 3 and fixedly connected to the other end of the coil spring 41. A pawl 52 is provided on the outer circumference of the winding seat 5. The pawl 52 is elastically arranged. A rotating shaft 53 is provided on the top of the winding seat 5. The rotating shaft 53 is rotatably mounted in the rotating hole 19. The pressure cover 42 is fixed to the top of the rotating shaft 53 by screws. The winding seat 5 and the pressure cover 42 are respectively located on both sides of the rotating hole 19. The pressure cover 42 and the winding shaft 51 limit the axial movement of the rotating shaft 53. The pawl 52 engages with the ratchet teeth 10. A slot 54 is provided at the top of the winding shaft 51. The handle 43 is equipped with an insert 431 that matches the slot 54. The insert 431 is movably inserted into the slot 54. The handle 43 is inserted outside the seat. The insert 431 and slot 54 allow the handle 43 to drive the winding seat 5 to rotate. The slot 54 is a cross slot, and the insert 431 is a cross block.

[0039] The release device includes a release seat 7, a release switch 6, and a locking block 31. The bottom of the release seat 7 is provided with a positioning hole 72 and a plurality of locking grooves 71. The plurality of locking grooves 71 are arranged in a circular array around the positioning hole 72, and the locking block 31 is movably inserted into the locking groove 71. The positioning hole 72 is rotatably mounted on the positioning shaft 16. The top of the release seat 7 is provided with a release shaft 73. The release shaft 73 is provided with a plurality of release blocks 74 and positioning blocks 75 in a circular array. The positioning blocks 75 are located between the release blocks 74 and the release seat 7, and the positioning blocks 75 are staggered with the release blocks 74. The release switch 6 is slidably inserted into the release hole 17 and the release shaft 73. The release switch 6 is provided with a plurality of release limit blocks 61 and anti-rotation blocks 62. The release limit blocks 61 are movably inserted between adjacent release blocks 74 or positioning blocks 75. The anti-rotation blocks 62 are movably inserted into the anti-rotation grooves 18, and the anti-rotation blocks 62 correspond one-to-one with the anti-rotation grooves 18. Anti-dropout blocks 63 are symmetrically provided on both sides of the bottom of the release switch 6 . The anti-dropout blocks 63 are located at the bottom of the release hole 17 to prevent the release switch 6 from being pulled out of the release hole 17 .

[0040] When the release limit block 61 is located on one side of the release block 74 or the positioning block 75, the locking block 31 is inserted into the locking groove 71. When the release limit block 61 moves from the release block 74 to the positioning block 75, the release seat 7 rotates, and the locking block 31 leaves the locking groove 71 and rotates one circle before being reinserted into the locking groove 71.

[0041] In the initial state, the release switch 6 is in the inserted state, the release limit block 61 is inserted on one side of the positioning block 75, and the locking block 31 is inserted in the locking groove 71. The anti-drop block 63 limits the withdrawal position of the release switch 6. When the release switch 6 is used, it is necessary to pull out the release switch 6. When the release switch 6 is pulled out, the release limit block 61 slides from the positioning block 75 to the release block 74. At this time, the release seat 7 rotates a small angle, which is the angle between the positioning block 75 and the release block 74. At this time, the release seat 7 rotates to the release position, the locking block 31 is still confined in the locking groove 71, and the release limit block 61 is located on one side of the release block 74. When the release switch 6 is pressed, the release limit block 61 slides from the release block 74 to the positioning block 75, and the release seat 7 continues to rotate at an angle, which is still the angle between the release block 74 and the positioning block 75. At this time, the locking block 31 slides out of the locking groove 71, and the driving seat 3 rotates one circle before the locking block 31 is reinserted into the locking groove 71, and the locking block 31 is confined in the locking groove 71.

[0042] When the release switch 6 is in the depressed state, it is safer and prevents misoperation.

[0043] During use, the release switch 6 is first pressed downward, then the insert 431 on the handle 43 is inserted into the slot 54 of the winding shaft 51. The handle 43 is then rotated clockwise to tighten the coil spring 41. Once the coil spring 41 is fully tightened, the handle 43 is removed. Because the locking block 31 on the drive base 3 is inserted into the locking slot 71, and the release stop 61 on the release switch 6 is movably inserted into one side of the positioning block 75, the drive base 3 cannot rotate. The release switch 6 is then pulled upward, and the release stop 61 moves from the positioning block 75 to the release block 74. The release base 7 rotates to the release position, and the connecting base 14 is pressed into the implantation position on the human body. The patch 87 is then attached to the human body. The release switch 6 is then pressed downward, and the drive base 3 rotates one revolution under the action of the coil spring 41. The slider 2, under the action of the eccentric shaft 33 and the drive slot 22, completes the implantation and withdrawal operations. When the drive base 3 drives the slider 2 downward via the eccentric shaft 33 and drive slot 22, the slider 2 drives the sensor base 84 and needle holder 83 to rapidly move toward the base 81. The implant needle 82 drives the sensor 86 to pierce the patch 87 and the skin, implanting it into the human body. The sensor base 84 is inserted into the fixing slot 811, and the fixing buckle 812 secures the sensor base 84. The slider 2 then returns under the action of the eccentric shaft 33 and drive slot 22. The sensor base 84 disengages the first movable buckle 23, and the needle holder 83 drives the implant needle 82 back. Because the implant needle 82 has an opening, the sensor 86 remains in the human body during the implant needle 82's return.

[0044] The release of coil spring 41 is very fast, resulting in a very short insertion and removal time, ensuring a good implant experience. Furthermore, due to the rapid needle removal and the location of sensor 86 within implant needle 82, sensor 86 is less likely to be dislodged during needle removal, resulting in a high implant success rate. The semi-open design of implant needle 82 allows needle 82 to avoid the rear connection of sensor 86 during removal after implantation, allowing for smooth needle removal without dislodging sensor 86.

[0045] The overall structure is simple and compact, with few parts, low cost, easy operation, and can be reused. Different coil springs can be set according to different groups of people to provide different implantation speeds, providing a good user experience.

[0046] A subcutaneous implantable device utilizes the resilience of a coil spring to achieve automatic insertion and removal. Its compact structure and simple principle reduce manufacturing complexity and save costs. It is also repositionable, enabling repeated implantation and reducing operational costs. The spring's elastic force can be adjusted, allowing for targeted implantation for different skin types. This ensures successful implantation and rapid needle removal, minimizing pain in the recipient and achieving a seamless implant.

[0047] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily devise other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the claims of the present invention.

Claims

1. A subcutaneous implant device comprising a patch (87), characterized in that Also includes: An implant seat, one end of which is provided with an implant hole (15); A slider (2), the slider (2) being slidably mounted in the implant seat and located on one side of the implant hole (15); A sensor seat (84), the sensor seat (84) being movably mounted on one end of the slider (2); A needle seat (83), the needle seat (83) being mounted on the slider (2) and located on top of the sensor seat (84); An implantation needle (82), the implantation needle (82) being fixed on the needle seat (83) and being movably inserted into the sensor seat (84); A sensor (86), wherein the sensor (86) is installed in the implant needle (82), and a connecting plate (861) of the sensor (86) is installed on the sensor seat (84); A base (81), the base (81) is movably inserted into the implantation hole (15), the base (81) is provided with a fixing device arranged opposite to the sensor seat (84), and the patch (87) is fixed to the bottom of the base (81); A driving device, the driving device being mounted on the implant seat and connected to the slider (2), and being used to drive the slider (2) to drive the sensor (86) and the implant needle (82) to be inserted into the human body, and to withdraw the implant needle (82) to implant the sensor (86) into the human body; and a release device, the release device being mounted on the implant seat and connected to the drive device, and being used to release the drive device; The driving device comprises: A driving seat (3), wherein an eccentric shaft (33) is provided on the driving seat (3), and the eccentric shaft (33) is movably inserted into a driving groove (22), wherein the driving groove (22) is provided on the slider (2), and the driving groove (22) is perpendicular to the moving direction of the slider (2); a coil spring (41), one end of the coil spring (41) being connected to the drive seat (3); A winding seat (5), the winding seat (5) is rotatably mounted on the driving seat (3) and connected to the other end of the coil spring (41), the winding seat (5) is provided with a pawl (52), and the pawl (52) is arranged opposite to the ratchet (10) provided on the implant seat; and A handle (43), the handle (43) being mounted on the winding seat (5) and located outside the implant seat; The release device comprises: A release seat (7), the release seat (7) is rotatably mounted on the implant seat and is located on one side of the drive seat (3), a plurality of locking grooves (71) are provided in an annular array at the bottom of the release seat (7), a release shaft (73) is provided at the top of the release seat (7), a plurality of release blocks (74) and positioning blocks (75) are provided in an annular array on the release shaft (73), the positioning block (75) is located between the release block (74) and the release seat (7), and the positioning block (75) and the release block (74) are staggered; A release switch (6), the release switch (6) is slidably inserted on the implant seat and the release shaft (73), and a plurality of release limit blocks (61) and anti-rotation blocks (62) are provided on the release switch (6), the release limit blocks (61) are movably inserted between adjacent release blocks (74) or positioning blocks (75), and the anti-rotation blocks (62) are movably inserted in the anti-rotation groove (18) of the implant seat; and A locking block (31), the locking block (31) being arranged on one side of the driving seat (3) and being movably inserted into the locking groove (71); When the release limit block (61) is located on one side of the release block (74) or the positioning block (75), the locking block (31) is inserted into the locking groove (71). When the release limit block (61) moves from the release block (74) to the positioning block (75), the release seat (7) rotates, and the locking block (31) leaves the locking groove (71), rotates one circle, and is then reinserted into the locking groove (71).

2. A subcutaneous implant device according to claim 1, characterized in that: The implant seat is provided with a sliding groove (13), the sliding groove (13) is located at one end of the implant hole (15) and communicates with the implant hole (15); the slider (2) is slidably inserted into the sliding groove (13), the slider (2) is provided with a guide seat (21), and the guide seat (21) is slidably inserted into the sliding groove (13).

3. A subcutaneous implant device according to claim 1, characterized in that: Also includes: A pressure cover (42) is fixed on a rotating shaft (53) at the top of the winding seat (5), and the rotating shaft (53) is rotatably mounted in the rotating hole (19) of the implant seat. The winding seat (5) and the pressure cover (42) are respectively located on both sides of the rotating hole (19).

4. A subcutaneous implant device according to claim 1, characterized in that: A slot (54) is provided on the top of the winding seat (5), and an insert block (431) matching the slot (54) is provided on the handle (43). The insert block (431) is movably inserted into the slot (54). The insert block (431) and the slot (54) are used for the handle (43) to drive the winding seat (5) to rotate.

5. A subcutaneous implant device according to claim 1, characterized in that: An anti-dropout block (63) is provided on the release switch (6), and the anti-dropout block (63) is located inside the implant seat.

6. A subcutaneous implant device according to any one of claims 1 to 5, characterized in that: One end of the slider (2) is provided with at least two first movable buckles (23) symmetrically arranged, and the sensor seat (84) is movably mounted on the first movable buckles (23); A fixing groove (811) and a fixing buckle (812) are provided on the base (81), and the fixing groove (811) and the fixing buckle (812) are used to fix the sensor seat (84).

7. A subcutaneous implant device according to claim 6, characterized in that: No less than two second movable buckles (24) are symmetrically provided on the slider (2), and the needle seat (83) is mounted on the second movable buckles (24).

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