Sensor implant device

Abstract

The present invention provides a sensor implantation device, comprising a housing, a first elastic member, a second elastic member, a pushing assembly and a return pin assembly, wherein the housing comprises an opening, and the first elastic member, the second elastic member, the pushing assembly and the return pin assembly are all mounted on the housing; the pushing assembly comprises a sensor accommodating portion, and the pushing assembly pushes the main body of the sensor in the sensor accommodating portion to the surface of human skin through the opening under the driving of the first elastic member, and the flexible needle is implanted into the human skin by the guide member; the return pin assembly comprises a clamping portion for clamping the guide member, and the return pin assembly separates the guide member clamped by the clamping portion from the main body of the sensor attached to the skin surface under the driving of the second elastic member. The present invention has a stable structure and reduces the possibility of failure when wearing a dynamic blood glucose sensor.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to a sensor implantation device. Background Art

[0002] Diabetes is a common metabolic endocrine disease caused by a lack of insulin or other receptor abnormalities in the human body. It is characterized by high blood sugar and is a worldwide epidemic disease. Its incidence has been rising significantly in recent years. Long-term high blood sugar leads to chronic damage and dysfunction of various tissues, especially the eyes, kidneys, heart, blood vessels, and nerves.

[0003] Glucose testing is very important for diabetic patients. Through glucose testing, it can be determined when to inject insulin to lower the glucose level in the body, or to supplement glucose to bring the glucose level to normal. A dynamic blood glucose sensor is a detection instrument that can collect human blood glucose data and is widely used in glucose testing for diabetic patients. In a dynamic blood glucose sensor, the blood glucose value in the body fluid is converted into an electrical signal through a sensor probe implanted under the skin, and the electrical signal is stored, recorded, and output.

[0004] In existing dynamic blood glucose sensors, the sensor probe usually uses a metal needle. However, the hardness of the metal needle is usually relatively large. Since it needs to be kept under the skin for a long time, it often causes patients to feel a foreign body and is uncomfortable to wear. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a sensor implantation device for implanting a soft probe into a human body in order to solve the problem that the sensor probe is uncomfortable to wear.

[0006] The technical solution of the present invention to solve the above technical problems is to provide a sensor implantation device, wherein the sensor comprises a main body, a flexible needle and a guide member, and the sensor implantation device comprises a housing, a first elastic member, a second elastic member, a pushing assembly and a return needle assembly, wherein the housing comprises an opening, and the first elastic member, the second elastic member, the pushing assembly and the return needle assembly are all mounted on the housing;

[0007] The pushing assembly includes a sensor accommodating portion, and the pushing assembly pushes the main body of the sensor in the sensor accommodating portion to the surface of human skin through the opening under the driving of the first elastic member, and the flexible needle is implanted into the human skin through the guide member;

[0008] The back needle assembly includes a clamping portion for clamping the guide member, and the back needle assembly is driven by the second elastic member to separate the guide member clamped by the clamping portion from the main body of the sensor attached to the skin surface.

[0009] As a further improvement of the present invention, the housing has a first guide member and a first buckle position, the pushing assembly includes a first pushing member and a second pushing member, and the sensor accommodating portion is located at the tail end of the first pushing member; the housing has a second guide member in or on the first pushing member, and the first guide member and the second guide member are both arranged along the axial direction of the housing;

[0010] The first pushing member has an elastic hook, and the first pushing member is installed in the housing in a manner that the head end cooperates with the first guide member and the elastic hook is buckled with the first buckle position; the first elastic member is respectively in contact with the housing and the first pushing member;

[0011] The second pushing member is assembled to the second guide member in such a way that at least a portion of the second pushing member protrudes from the housing, and when the second pushing member is pushed to move along the second guide member to a preset position, the elastic hook of the first pushing member is driven to disengage from the first buckle position, and the first elastic member pushes the first pushing member to move along the first guide member, thereby pushing the main body of the sensor of the sensor accommodating part to the surface of human skin.

[0012] As a further improvement of the present invention, the first pushing member includes a first columnar portion and a first disc-shaped portion located at the tail end of the first columnar portion, and the elastic hook protrudes from the outer periphery of the first columnar portion;

[0013] The first elastic member is composed of a first spring, and when the first pushing member is assembled to the housing, the first columnar portion cooperates with the first guide member, and the first spring is sleeved on the first columnar portion in a manner that both ends thereof are respectively in contact with the housing and the first disc-shaped portion.

[0014] As a further improvement of the present invention, a first annular protrusion is formed on the inner wall of the shell, and the plane where the first annular protrusion is located is perpendicular to the axial direction of the shell, and the first buckle position is formed by the inner edge of the first annular protrusion;

[0015] The first disc-shaped portion has a plurality of vertical rods surrounding the first column-shaped portion and respectively parallel to the first column-shaped portion. The free end of each vertical rod is formed with a hook portion facing the first disc-shaped portion. The elastic hook is composed of a plurality of vertical rods and hook portions.

[0016] As a further improvement of the present invention, the second pushing member is cylindrical in shape as a whole, and an extrusion portion corresponding to the elastic hook is formed on the second pushing member;

[0017] The second pushing member is assembled to the first pushing member in a manner that it is partially sleeved on the outer periphery of the first pushing member and the bottom protrudes out of the opening of the outer shell, and the second guide member is constituted by the first pushing member. When the portion of the second pushing member protruding out of the opening of the outer shell is pushed and retracted into the outer shell, the extrusion portion drives the elastic hook of the first pushing member to disengage from the first buckle position.

[0018] As a further improvement of the present invention, the inner wall of the shell is formed with a second annular protrusion and a third annular protrusion, and the planes where the second annular protrusion and the third annular protrusion are located are respectively perpendicular to the axial direction of the shell;

[0019] The outer periphery of the second pushing member has a flange, and the plane where the flange is located is perpendicular to the axial direction of the shell; when the second pushing member is installed on the second guide component, the flange cooperates with the second annular protrusion and the third annular protrusion to limit the range of movement of the second pushing member.

[0020] As a further improvement of the present invention, a sliding groove is formed on the first pushing member, and the opening of the sliding groove faces the opening of the shell, and the central axis of the sliding groove is in the same direction as the central axis of the shell; the return pin assembly includes a third pushing member, a limiting member and a third elastic member, and the clamping portion is located on the third pushing member;

[0021] The outer surface of the third pushing member is provided with a slot perpendicular to the axial direction of the housing, the limiting member is provided with an embedded portion adapted to the slot, the third pushing member and the second elastic member are respectively installed in the sliding cavity of the first pushing member, and the second elastic member is respectively in contact with the first pushing member and the third pushing member;

[0022] The limiting member is installed to the first pushing member in a manner that the embedded portion is embedded in the slot, and the third elastic member is installed to the limiting member in a manner that the third elastic member is respectively abutted against the first pushing member and the limiting member, and when the second pushing member is pushed to move to a preset position along the second guide member, the third elastic member pushes the embedded portion of the limiting member to disengage from the slot of the third pushing member, so that the third pushing member moves in a direction away from the opening of the shell under the drive of the second elastic member.

[0023] As a further improvement of the present invention, the third pushing member includes an outer cylindrical portion and an inner column portion, the inner column portion is located inside the outer cylindrical portion, and the inner column portion is connected to the end of the outer cylindrical portion, and the clamping portion is formed at one end of the inner column portion facing the opening of the outer shell; the second elastic member is composed of a second spring, the second spring is sleeved on the inner column portion, and one end of the second spring abuts against the connection between the inner column portion and the outer cylindrical portion, and the other end of the second spring abuts against the sensor accommodating portion.

[0024] As a further improvement of the present invention, the sensor accommodating portion is independent of the first pushing member, and the sensor accommodating portion includes a second disc-shaped portion and a second columnar portion connected to the back side of the second disc-shaped portion, the second disc-shaped portion accommodates the sensor through a recess on the front side, and the second columnar portion is movably connected to the third pushing member.

[0025] As a further improvement of the present invention, the third elastic member is composed of a third spring, the second pushing member includes an annular baffle, and the annular baffle has a notch; the limiting member includes an opening for the third pushing member to pass through and a mounting handle for mounting the third spring, the embedded portion is composed of an edge of the opening, and when the side of the limiting member away from the mounting handle abuts against the annular baffle of the second pushing member, the opening deviates from the center of the third pushing member and the embedded portion is embedded in the card slot on the third pushing member;

[0026] The third spring is sleeved on the mounting handle and respectively abuts against the limiting member and the first pushing member; when the second pushing member is pushed to move along the second guide member, the limiting member disengages from the notch of the annular baffle plate and is pushed by the third spring to disengage the embedded portion from the slot, and at the same time, the third pushing member moves with the guide member toward the direction away from the opening of the outer shell under the drive of the second elastic member.

[0027] The present invention has the following beneficial effects: the sensor and the flexible needle are implanted into the human body by driving the push assembly through the first elastic member, and the hard guide member is pulled out by driving the needle return assembly through the second elastic member, so that the dynamic blood glucose sensor with the flexible needle can be quickly worn. In addition, the structure of the present invention is stable, which reduces the possibility of failure when wearing the dynamic blood glucose sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the structure of a sensor implantation device provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the exploded structure of a sensor implantation device provided by an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the exploded structure of the pushing assembly and the return needle assembly in the sensor implantation device provided by an embodiment of the present invention;

[0031] Figure 4 is a schematic structural diagram of a first pushing member in a sensor implantation device provided in an embodiment of the present invention;

[0032] Figure 5 is a schematic structural diagram of a first pushing member in a sensor implantation device provided in an embodiment of the present invention;

[0033] Figure 6 is a schematic structural diagram of a first pushing member in a sensor implantation device provided in an embodiment of the present invention;

[0034] Figure 7 is a schematic structural diagram of a first pushing member in a sensor implantation device provided in an embodiment of the present invention;

[0035] Figure 8 is a schematic structural diagram of a first pushing member in a sensor implantation device provided in an embodiment of the present invention;

[0036] Fig. 9 is a schematic cross-sectional structure diagram of the sensor implantation device provided by an embodiment of the present invention before the sensor is implanted;

[0037] Fig.10 It is a schematic diagram of the cross-sectional structure of the sensor implantation device provided by an embodiment of the present invention after the sensor is implanted.

[0038] Description of Figure Numbers:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] like Figure 1-3 , is a schematic diagram of the structure of a sensor implantation device provided by an embodiment of the present invention, the sensor implantation device is used to wear a sensor 40 including a main body 41 and a flexible needle 43 on a human body, wherein at least a portion of the flexible needle 43 is implanted subcutaneously through a guide 42 on the sensor 40. In particular, the sensor 40 can be a device for dynamic blood glucose monitoring of a human body, and the structure of the sensor 40 can adopt conventional techniques in the art, which will not be described in detail here. Of course, in practical applications, the sensor 40 can also be a device for collecting other vital signs parameters of a human body.

[0044] In this embodiment, the sensor implantation device includes a housing 10, a first elastic member 51, a second elastic member 52, a push assembly 20 and a return pin assembly 30, one end of the housing 10 has an opening 14, and the first elastic member 51, the second elastic member 52, the push assembly 20 and the return pin assembly 30 are all installed on the housing 10. In one embodiment of the present invention, the housing 10 is assembled by a first shell 11, a second shell 12 and a third shell 13, wherein the first shell 11 and the second shell 12 are buckled together to form a substantially cylindrical housing main structure, the third shell 13 is fixed at one end of the housing main structure, and the other end of the housing main structure forms an opening 14. The area enclosed by the first shell 11, the second shell 12, the third shell 13 and the opening 14 constitutes a receiving cavity for installing the first elastic member 51, the second elastic member 52, the push assembly 20 and the return pin assembly 30. The above-mentioned first shell 11, second shell 12 and third shell 13 can be specifically made of hard plastic materials. Of course, in practical applications, the first shell 11, second shell 12 and third shell 13 can also be made of other hard materials, and their structures can also be adjusted as needed. For example, two or three of the first shell 11, second shell 12 and third shell 13 can be an integrated structure.

[0045] The pushing assembly 20 includes a sensor accommodating portion 24, which is used to load the sensor 40. After the sensor 40 is loaded, the sensor accommodating portion 24 and the sensor 40 are both located in the housing 10. The pushing assembly 20 can push the main body 41 of the sensor 40 in the sensor accommodating portion 24 to the surface of the human skin through the opening 14 under the drive of the first elastic member 51. In this process, at least a portion of the flexible needle 43 is implanted into the human skin under the guidance of the guide member 42. Specifically, the pushing assembly 20 can be made of hard plastic material or other hard materials.

[0046] The needle return assembly 30 includes a clamping portion 315 for clamping the guide member 42, and the needle return assembly 30 separates the guide member 42 clamped by the clamping portion 315 from the body 41 of the sensor 40 attached to the skin surface under the drive of the second elastic member 52, that is, after the pushing assembly 20 pushes the body 41 of the sensor 40 to the human skin surface and the guide member 42 implants the flexible needle 43 into the human skin, the needle return assembly 30 clamps the guide member 42 through the clamping portion 315 and pulls it off the body 41, thereby completing the implantation of the sensor 40. Specifically, the needle return assembly 30 can be made of hard plastic material or other hard materials.

[0047] The sensor implantation device drives the pushing assembly 20 through the first elastic member 51 to wear the main body 41 of the sensor 40 on the human body and implant the flexible needle 43 into the human body, and then drives the needle return assembly 30 through the second elastic member 52 to pull out the hard guide member 42, so that the dynamic blood glucose sensor with the flexible needle 43 can be quickly worn. In addition, the sensor implantation device has a stable structure, which reduces the possibility of failure when wearing the dynamic blood glucose sensor.

[0048] Combination Figure 2-4 As shown, in one embodiment of the present invention, Figure 1 The housing 10 in the embodiment has a first guide member 131 and a first buckle position 101a, and accordingly, the pushing assembly 20 includes a first pushing member 22 and a second pushing member 23, wherein the sensor accommodating portion 24 is located at the rear end of the first pushing member 22. In practical applications, the sensor accommodating portion 24 can be integrated with the first pushing member 22 or can be independent of the first pushing member 22. A second guide member 222a is also provided in the housing 10 or on the first pushing member 22, and both the first guide member 131 and the second guide member 222a are arranged along the axial direction of the housing 10, that is, along the direction in which the flexible needle 43 of the sensor 40 is implanted into the skin.

[0049] The first pushing member 22 has an elastic hook 223. Fig. 9 As shown, the first push member 22 is installed in the housing 10 in a manner that the head end cooperates with the first guide member 131 and the elastic hook 223 is locked with the first buckle position 101a; the first elastic member 51 abuts against the housing 10 and the first push member 22 respectively; the second push member 23 is assembled to the second guide member 222a in a manner that at least a part of it protrudes from the housing 10. Fig.10 As shown, when the second pushing member 23 is pushed to move to a preset position along the second guide member 222a, the elastic hook 223 of the first pushing member 22 is driven to disengage from the first buckle position 101a, and the first elastic member 51 pushes the first pushing member 22 to move along the first guide member 131, pushing the main body 41 of the sensor 40 of the sensor accommodating portion 24 to the surface of the human skin, and at the same time, the guide member 42 implants at least a portion of the flexible needle 43 into the human skin.

[0050] Preferably, the first pusher 22 includes a first columnar portion 221 and a first disc-shaped portion 222 located at the rear end of the first columnar portion 221, and the circumferential dimension of the first disc-shaped portion 222 is larger than the circumferential dimension of the first columnar portion 221, wherein the elastic hook 223 protrudes from the outer circumference of the first columnar portion 221. The first elastic member 51 is composed of a first spring, and when the first pusher 51 is assembled to the housing 10, the first columnar portion 221 cooperates with the first guide member 131, and the first spring is sleeved on the first columnar portion 221 in a manner that the two ends of the first spring are respectively in contact with the housing 10 and the first disc-shaped portion 222, and before the sensor 40 is implanted, the first spring is in a compressed state.

[0051] Accordingly, the first guide member 131 in the housing 10 is formed on the third shell 13 and is composed of a columnar body or a cylindrical body extending from the third shell 13 toward the opening 14, and the first guide member 131 also includes a plurality of outer ribs 132 protruding from the columnar body or the cylindrical body, and the plurality of outer ribs 132 are evenly distributed on the outer periphery of the first guide member 131. For example, in combination with Fig. 9 As shown, the first columnar portion 221 and the first guide member 131 are both cylindrical, and there is a gap between the end of the outer rib 132 facing the opening 14 and the outer wall of the first guide member 131, and the first columnar portion 221 is sleeved on the outer side of the first guide member 131 (the end of the first columnar portion 221 away from the first disc-shaped portion is embedded in the gap between the outer rib 132 and the outer wall of the first guide member 131), and the two ends of the first spring are respectively abutted against the outer rib 132 and the first disc-shaped portion 222 (the diameter of the outer peripheral surface of the outer rib 132 is larger than the diameter of the first spring).

[0052] Preferably, the inner wall of the housing 10 is formed with a first annular protrusion 101, and the plane where the first annular protrusion 101 is located is perpendicular to the axial direction of the housing 10, and the first buckle position 101a is formed by the inner edge of the first annular protrusion 101. Accordingly, the first disc-shaped portion 222 has a plurality of vertical rods 223a surrounding the first columnar portion 221 and respectively parallel to the first columnar portion 221, and the free end of each vertical rod 223a is formed with a hook portion 223b facing the first disc-shaped portion 222, and the hook portion 223b is facing away from the first columnar portion 221, and the elastic hook 223 is composed of a plurality of vertical rods 223a and hook portions 223b. The second pushing member 23 pushes the upper end of the vertical rod 223a (i.e., the end away from the first disc-shaped portion 222) toward the first columnar portion 221, so that the hook portion 223b is disengaged from the first buckle position 101a. Of course, in practical applications, the hook portion 223b may also be located at other positions along the length direction of the vertical rod 223a.

[0053] In particular, a wedge-shaped protrusion 223c can be further provided on the side of the vertical rod 223a facing away from the first columnar portion 221. The wedge-shaped protrusion 223c has an inclined surface facing the first disc-shaped portion 222. The second pushing member 23 pushes the vertical rod 223a along the inclined surface of the wedge-shaped protrusion 223c, thereby making it easier for the hook portion 223b at the upper end of the vertical rod 223a to disengage from the first buckle position 101a.

[0054] Preferably, the second pushing member 23 is cylindrical in shape as a whole and is sleeved on the outer side of the first disc-shaped portion 222 of the first pushing member 22. Figure 8 As shown, the second pusher 23 includes a cylindrical annular baffle 231, and the second pusher 23 is also formed with an extrusion portion 234 corresponding to the elastic hook 223. Specifically, the extrusion portion 234 is composed of a convex ring above the annular baffle 231, and the size of the convex ring is adapted to the size of the circumference of the vertical rod 223a. During assembly, the second pushing member 23 is assembled to the first pushing member 22 in a manner that it is partially sleeved on the outer periphery of the first pushing member 22 (the first columnar portion 221 and the vertical rod 223a of the first pushing member 22 are both inserted into the convex ring, and the first disc-shaped portion 222 is embedded in the annular baffle 231), and the bottom protrudes out of the opening 14 of the outer shell 10, and the second guide member 222a is formed by the vertical edge of the first disc-shaped portion 222 of the first pushing member 22. When the portion of the second pushing member 23 protruding out of the opening 14 of the outer shell 10 is pushed and retracted into the outer shell 10 (that is, when the second pushing member 23 moves away from the opening 14), the extrusion portion 234 pushes the vertical rod 223a to disengage the hook portion 223b from the first buckle position 101a, so that the elastic hook 223 of the first pushing member 22 disengages from the first buckle position 101a.

[0055] Preferably, the inner wall of the housing 10 is formed with a second annular protrusion 102 and a third annular protrusion 103, and the planes where the second annular protrusion 102 and the third annular protrusion 103 are located are respectively perpendicular to the axial direction of the housing 10. Correspondingly, the outer periphery of the second pusher 23 has a flange 236, the plane where the flange 236 is located is perpendicular to the axial direction of the housing 10, and the outer diameter of the flange 236 is respectively larger than the inner diameter of the second annular protrusion 102 and the third annular protrusion 103, and smaller than the circumferential dimension of the inner wall of the housing 10. When the second pusher 23 is mounted on the second guide member, the axial range of movement of the second pusher 23 is limited by the flange 236 cooperating with the second annular protrusion 102 and the third annular protrusion 103. At the same time, the outer wall of the annular baffle 231 can also cooperate with the inner annular surface of the third annular protrusion 103, so as to guide the sliding direction of the second pusher 23 to a certain extent.

[0056] The first disc-shaped portion 222 of the first pushing member 22 can be installed below the second annular protrusion 102, that is, installed on the side of the second annular protrusion 102 facing the opening 14. In addition, a plurality of guide holes can be respectively provided on the first annular protrusion 101 and the second annular protrusion 102, and correspondingly, a plurality of guide columns 226 can be provided on the first pushing member 22, the bottom of the guide column 226 is connected to the first disc-shaped portion 222 and is parallel to the first columnar portion 2, and the cooperation between the guide column 226 and the guide hole can assist in guiding the movement direction of the first pushing member 22.

[0057] In one embodiment of the present invention, the first pushing member 22 and the sensor accommodating portion 24 are composed of independent components, wherein a sliding groove 225 is formed on the first pushing member 22, and the opening of the sliding groove 225 faces the opening 14 of the outer shell 10, and the central axis of the sliding groove 225 is in the same direction as the central axis of the outer shell 10.

[0058] Correspondingly, the return pin assembly 30 includes a third pusher 31, a stopper 33 and a third elastic member 34, and the third pusher 31 has a clamping portion 315 for clamping the guide member 42. The outer surface of the third pusher 31 is provided with a clamping groove 312 perpendicular to the axial direction of the housing 10, and the stopper 33 is provided with an embedding portion 331a adapted to the clamping groove 312. The third pusher 31 and the second elastic member 52 are respectively installed in the sliding groove 225 of the first pusher 22, and the second elastic member 52 is respectively in contact with the third pusher 31 and the sensor accommodating portion 24 (the second elastic member 52 is in a compressed state). The limiting member 33 is installed in the mounting cavity 222b at the bottom of the first pushing member 22 in such a manner that the embedded portion 331a is embedded in the card slot 312, and the third elastic member 34 is installed in the limiting member 33 in such a manner that the third elastic member 34 abuts against the first pushing member 22 and the limiting member 33 respectively (the elastic deformation direction of the third elastic member 34 is perpendicular to the axial direction of the housing 10), and when the second pushing member 23 is pushed to move to a preset position along the second guide member 222a, the third elastic member 34 pushes the embedded portion 331a of the limiting member 33 to disengage from the card slot 312 of the third pushing member 31, so that the third pushing member 31 moves in a direction away from the main body 41 of the sensor 40 under the drive of the second elastic member 52.

[0059] Preferably, if Figure 5As shown, the third pushing member 31 includes an outer cylindrical portion 311 and an inner column portion 313, wherein the slot 312 is located on the outer wall handle of the outer cylindrical portion 311 and is perpendicular to the axial direction of the third pushing member 31, the inner column portion 313 is located inside the outer cylindrical portion 311, and the inner column portion 313 is connected to the end of the outer cylindrical portion 311 (the end facing away from the opening 14), and the clamping portion 315 is formed at one end of the inner column portion 313 facing the opening 14 of the outer shell 10, for example, the inner column portion 313 is composed of a cylindrical surface divided by three axial gaps, and the inner side of the end of the inner column portion 313 facing the opening 14 has a protrusion, and the tail end of the guide member 42 is clamped by the protrusion.

[0060] The second elastic member 52 can be specifically composed of a second spring. During assembly, the second spring is sleeved on the inner column portion 313, and one end of the second spring abuts against the connection between the inner column portion 313 and the outer cylindrical portion 311, and the other end of the second spring abuts against the sensor accommodating portion 24, so that when the embedding portion 331a of the limiting member 33 disengages from the slot 312 of the third pushing member 31, the second spring pushes the third pushing member 31 clamping the tail end of the guide member 42 to move in a direction away from the opening 14, and the guide member 42 is pulled off the main body 41 of the sensor 40.

[0061] When the sensor accommodating portion 24 is independent of the first pushing member 22, the sensor accommodating portion 24 includes a second disk-shaped portion 242 and a second column-shaped portion 241 connected to the back of the second disk-shaped portion 242. The second disk-shaped portion 242 accommodates the sensor 40 through the recess 244 on the front side, and the second column-shaped portion 241 is movably connected to the third pushing member 31. A latching structure may be provided on the side wall of the recess 244 to prevent the sensor 40 in the recess 244 from falling off.

[0062] For example, Figure 7 As shown, the second columnar portion 241 may be cylindrical and matched with the third pushing member 31. The second columnar portion 241 has an opening at one end away from the second disc-shaped portion 242. The sensor accommodating portion 24 is movably connected to the third pushing member 31 in a manner that the second columnar portion 241 is inserted between the outer cylindrical portion 311 and the inner cylindrical portion 313 of the third pushing member 31, and the second spring is located between the inner cylindrical portion 313 and the second columnar portion 241. In addition, to facilitate the assembly of the sensor accommodating portion 24, a guide groove 314 may be provided on the outer cylindrical portion 311 of the third pushing member 31. Accordingly, the outer wall of the second columnar portion 241 of the sensor accommodating portion 24 may have a convex rib 243. Therefore, during assembly, the assembly guidance of the sensor accommodating portion 24 is achieved by embedding the convex rib 243 into the guide groove 314, thereby avoiding the axial assembly error of the sensor accommodating portion 24.

[0063] Preferably, the third elastic member 34 is composed of a third spring, and the annular baffle 231 of the second pushing member 23 has a notch 235. Figure 6As shown, the limiting member 33 includes a plate-like portion 331, an opening 333 located in the plate-like portion 331 and used for the third pushing member 31 to pass through, a mounting handle 332 located at one end of the plate-like portion 331 and used for mounting a third spring, and a tongue 334 located at one end of the plate-like portion 331 away from the mounting handle 332, wherein the embedded portion 331a is formed by the edge of the side of the opening 333 away from the mounting handle 332.

[0064] The above-mentioned stopper 33 can be installed in the installation cavity 222b at the bottom of the first disk-shaped part 222, and the protruding tongue 334 on the plate-shaped part 331 corresponds to the side hole 227 on the side wall of the installation cavity 222b, and the shape and size of the above-mentioned installation cavity 222b are adapted to the shape and size of the stopper 33. The side of the stopper 33 away from the installation handle 332 abuts against the annular baffle 231 of the second pushing member 23, the opening 333 of the stopper 33 deviates from the center of the third pushing member 31, and the embedding part 331a is embedded in the slot 312 on the third pushing member 31. The third spring is sleeved on the installation handle 332 and abuts against the plate-shaped part 331 and the inner wall of the installation cavity 222b respectively. When the second pushing member 23 is pushed to move along the second guide member 222a, the limiting member 33 disengages from the obstruction of the annular baffle 231 from the notch 235 of the annular baffle 231, and is pushed by the third spring to disengage the embedded portion 331a from the slot 312. At the same time, the third pushing member 31 is driven by the second elastic member 52 to move with the guide member 42 toward the direction away from the main body 41 of the sensor 40.

[0065] In one embodiment of the present invention, Fig. 9 , 10As shown in the figure, after the first pushing member 22 passes through the extrusion portion 234 at the top end of the second pushing member 23 through the first columnar portion 221, the top end is sleeved on the first guide member 131 of the third shell 13 and can move along the first guide member 131, and the annular baffle 231 of the second pushing member 23 is sleeved on the outer side of the first disc-mounted portion 222; the first elastic member 51 is sleeved on the first columnar portion 221, and the two ends of the first elastic member 51 are respectively against the outer rib 132 and the first disc-shaped portion 222 and are in a compressed state, and at the same time, the guide column 226 passes through the guide holes on the second annular protrusion 102 and the first annular protrusion 101; the limiting member 33 and the third elastic member 51 are sleeved on the first columnar portion 221, and the two ends of the first elastic member 51 are respectively against the outer rib 132 and the first disc-shaped portion 222 and are in a compressed state. At the same time, the guide column 226 passes through the guide holes on the second annular protrusion 102 and the first annular protrusion 101; The elastic member 34 is installed in the installation cavity 222b at the bottom of the first disc-shaped portion 222. The upper portion of the third push member 31 passes through the opening 333 on the stop member 33 and is installed in the sliding groove 225 of the first push member 22. The embedded portion 331a of the stop member 34 is embedded in the slot 312 on the third push member 31. After the second elastic member 52 is sleeved on the second columnar portion 241 of the sensor accommodating portion 24, it is inserted between the outer cylindrical portion 311 and the inner columnar portion 313 of the third push member 31 along with the second columnar portion 241. The two ends of the second elastic member 52 are respectively against the third push member 31 and the sensor accommodating portion 24 and are in a compressed state. When the sensor implant device leaves the factory, the lower portion of the annular baffle 231 of the second push member 23 protrudes from the opening 14 of the housing 10.

[0066] Furthermore, in order to prevent the second pusher 23 from retracting into the housing 10 during transportation and movement of the sensor implantation device, one or more outer hooks 232 facing away from the opening 14 may be provided on the outer wall of the annular baffle 231, and the outer hooks 232 may hook the edge of the opening 14 to prevent the annular baffle 231 from moving axially. When the sensor 40 is loaded into the recess 244 of the sensor receiving portion 24, the outer hooks 232 may be pushed to move toward the central axis of the housing 10 and disengage from the edge of the opening 14, and the annular baffle 231 may be moved in the direction away from the opening 14 by a short distance (less than the distance for the elastic hook 223 to disengage from the first buckle position 101a, for example, 1 mm), so as to facilitate the subsequent sensor implantation. Furthermore, when the sensor 40 is loaded into the recess 244 of the sensor receiving portion 24, the tail end of the guide member 42 is clamped into the clamping portion 315 of the third pusher 31 under pressure. In particular, in order to facilitate the outer hook 232 to disengage from the edge of the opening 14, the outer hook 232 may have an inclined surface.

[0067] When the sensor is implanted into the human body (the sensor 40 has been loaded into the sensor implantation device), the lower edge of the annular baffle 231 of the second pushing member 23 is first attached to the surface of the skin of the part to be implanted in the human body, and the central axis of the shell 10 is kept perpendicular to the skin surface, and then the shell 10 is pushed downward to retract the annular baffle 231 into the opening 14 of the shell 10; as the shell 10 moves downward (i.e., moves toward the skin surface), the elastic hook 223 on the first pushing member 22 is pushed by the squeezing portion 234 on the second pushing member 23 and disengages from the first buckle position 101a; at this time, the first elastic member 51 pushes the first pushing member 22, the sensor accommodating portion 24, the third pushing member 31, The second elastic member 52, the limiting member 33 and the sensor 40 move rapidly toward the skin surface, and the flexible needle 43 of the sensor 40 follows the guide member 42 and is inserted into the skin. Furthermore, the limiting member 33 is driven by the third elastic member 3, and its tongue 334 is guided by the side hole 227 of the first disc-shaped portion 222 and disengaged from the notch 235 of the annular baffle 231. At the same time, the embedded portion 331a on the limiting member 33 is disengaged from the slot 312 of the third pushing member 31. The third pushing member 31 is driven by the second elastic member 52 and moves rapidly along the lowering direction of the back opening 14, and pulls the guide member 42 off the main body 41 of the sensor 40. The flexible needle 43 is retained in the skin, and the sensor implantation is completed. Fig.10 shown.

[0068] In addition, in order to prevent the main body 41 of the sensor 40 from following the movement when the guide member 42 is pulled out, an inner hook 233 can be set on the inner side of the annular baffle 231. The inner hook 233 has a hook portion facing away from the opening 14 and an inclined surface facing the opening 14. The inner hook 233 can hook the main body 41 of the sensor 40 when the third pushing member 31 is extended, so as to prevent the main body 41 from following the guide member 42 to extend upward.

[0069] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A sensor implantation device, the sensor comprising a main body, a flexible needle and a guide, characterized in that: The sensor implantation device comprises a housing, a first elastic member, a second elastic member, a pushing assembly and a return pin assembly, the housing comprises an opening, and the first elastic member, the second elastic member, the pushing assembly and the return pin assembly are all mounted on the housing; The pushing assembly includes a sensor accommodating portion, and the pushing assembly pushes the main body of the sensor in the sensor accommodating portion to the surface of human skin through the opening under the driving of the first elastic member, and the flexible needle is implanted into the human skin through the guide member; The return needle assembly includes a clamping portion for clamping the guide member, and the return needle assembly is driven by the second elastic member to separate the guide member clamped by the clamping portion from the main body of the sensor attached to the skin surface; The housing has a first guide member and a first buckle position, the pushing assembly includes a first pushing member and a second pushing member, and the sensor accommodating portion is located at the tail end of the first pushing member; the housing has a second guide member in or on the first pushing member, and the first guide member and the second guide member are both arranged along the axial direction of the housing; The first pushing member has an elastic hook, and the first pushing member is installed in the housing in a manner that the head end cooperates with the first guide member and the elastic hook is buckled with the first buckle position; the first elastic member is respectively in contact with the housing and the first pushing member; The second pushing member is assembled to the second guide member in a manner that at least a portion of the second pushing member protrudes from the housing, and when the second pushing member is pushed to move to a preset position along the second guide member, the elastic hook of the first pushing member is driven to disengage from the first buckle position, and the first elastic member pushes the first pushing member to move along the first guide member, so as to push the main body of the sensor of the sensor accommodating portion to the surface of human skin; A sliding groove is formed on the first pushing member, and the opening of the sliding groove faces the opening of the shell, and the central axis of the sliding groove is in the same direction as the central axis of the shell; the return needle assembly includes a third pushing member, a limiting member and a third elastic member, and the clamping portion is located on the third pushing member; The outer surface of the third pushing member is provided with a slot perpendicular to the axial direction of the housing, the limiting member is provided with an embedding portion adapted to the slot, the third pushing member and the second elastic member are respectively installed in the sliding cavity of the first pushing member, and the second elastic member is respectively in contact with the sensor accommodating portion and the third pushing member; The limiting member is installed to the first pushing member in a manner that the embedded portion is embedded in the slot, and the third elastic member is installed to the limiting member in a manner that the third elastic member is respectively abutted against the first pushing member and the limiting member, and when the second pushing member is pushed to move to a preset position along the second guide member, the third elastic member pushes the embedded portion of the limiting member to disengage from the slot of the third pushing member, so that the third pushing member moves in a direction away from the opening of the shell under the drive of the second elastic member.

2. The sensor implantation device according to claim 1, characterized in that: The first pushing member includes a first columnar portion and a first disc-shaped portion located at the tail end of the first columnar portion, and the elastic hook protrudes from the outer periphery of the first columnar portion; The first elastic member is composed of a first spring, and when the first pushing member is assembled to the housing, the first columnar portion cooperates with the first guide member, and the first spring is sleeved on the first columnar portion in a manner that both ends thereof are respectively in contact with the housing and the first disc-shaped portion.

3. The sensor implantation device according to claim 2, characterized in that: A first annular protrusion is formed on the inner wall of the shell, and the plane where the first annular protrusion is located is perpendicular to the axial direction of the shell, and the first buckle position is formed by the inner edge of the first annular protrusion; The first disc-shaped portion has a plurality of vertical rods surrounding the first column-shaped portion and respectively parallel to the first column-shaped portion. The free end of each vertical rod is formed with a hook portion facing the first disc-shaped portion. The elastic hook is composed of a plurality of vertical rods and hook portions.

4. The sensor implantation device according to claim 1, characterized in that: The second pushing member is cylindrical in shape as a whole, and is provided with an extrusion portion corresponding to the elastic hook; The second pushing member is assembled to the first pushing member in a manner that it is partially sleeved on the outer periphery of the first pushing member and the bottom protrudes out of the opening of the outer shell, and the second guide member is constituted by the first pushing member. When the portion of the second pushing member protruding out of the opening of the outer shell is pushed and retracted into the outer shell, the extrusion portion drives the elastic hook of the first pushing member to disengage from the first buckle position.

5. The sensor implantation device according to claim 1, characterized in that: The inner wall of the shell is formed with a second annular protrusion and a third annular protrusion, and the planes where the second annular protrusion and the third annular protrusion are located are respectively perpendicular to the axial direction of the shell; The outer periphery of the second pushing member has a flange, and the plane where the flange is located is perpendicular to the axial direction of the housing; When the second pushing member is mounted on the second guide component, the flange cooperates with the second annular protrusion and the third annular protrusion to limit the movable range of the second pushing member.

6. The sensor implantation device according to claim 1, characterized in that: The third pushing member includes an outer cylindrical portion and an inner column portion, the inner column portion is located inside the outer cylindrical portion, and the inner column portion is connected to the end of the outer cylindrical portion, and the clamping portion is formed at one end of the inner column portion facing the opening of the outer shell; the second elastic member is composed of a second spring, the second spring is sleeved on the inner column portion, and one end of the second spring abuts against the connection between the inner column portion and the outer cylindrical portion, and the other end of the second spring abuts against the sensor accommodating portion.

7. The sensor implantation device according to claim 1, characterized in that: The sensor accommodating portion is independent of the first pushing member, and includes a second disc-shaped portion and a second column-shaped portion connected to the back side of the second disc-shaped portion. The second disc-shaped portion accommodates the sensor through a recess on the front side, and the second column-shaped portion is movably connected to the third pushing member.

8. The sensor implantation device according to claim 1, characterized in that: The third elastic member is composed of a third spring, the second pushing member includes an annular baffle, and the annular baffle has a notch; the limiting member includes an opening for the third pushing member to pass through and a mounting handle for mounting the third spring, the embedding portion is composed of an edge of the opening, and when the side of the limiting member away from the mounting handle abuts against the annular baffle of the second pushing member, the opening deviates from the center of the third pushing member and the embedding portion is embedded in the slot on the third pushing member; The third spring is sleeved on the mounting handle and respectively abuts against the limiting member and the first pushing member; when the second pushing member is pushed to move along the second guide member, the limiting member disengages from the notch of the annular baffle plate and is pushed by the third spring to disengage the embedded portion from the slot, and at the same time, the third pushing member moves with the guide member toward the direction away from the opening of the outer shell under the drive of the second elastic member.

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