Retaining structure in implantation tool and implantation tool

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a retaining structure in an implantation tool, which comprises a shell, a push injection part and a retaining part, the push shooting piece is located in the shell and connected with the shell in a buckled mode, and the push shooting piece is provided with a first position buckled on the shell and a second position released and moved from the shell; the retaining piece is positioned in the shell; a rotation driving part is arranged in the shell, corresponds to the retaining part and is used for driving the retaining part to rotate after the pushing and shooting part is released and moved, so that the retaining part and the pushing and shooting part are staggered, and the pushing and shooting part is limited to move back from the second position to the first position through the retaining part. Meanwhile, the invention further provides an implanting tool. According to the retaining structure in the implanting tool and the implanting tool, the processing and manufacturing difficulty can be reduced, and the retreating of the pushing and shooting piece can be more stably limited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an anti-backout structure in an implantation tool and the implantation tool. BACKGROUND

[0002] The dynamic implantable continuous blood glucose monitoring system is a system for monitoring blood glucose index of human body, and can realize real-time dynamic monitoring of blood glucose by sending a sensor into subcutaneous tissue of human body. The dynamic implantable continuous blood glucose monitoring system can continuously monitor blood glucose data in the body by implanting a sensor once and connecting through Bluetooth, thereby saving the pain of pricking with a traditional blood glucose meter and making up for the cumbersome operation that the traditional blood glucose meter can only monitor blood glucose once.

[0003] For the dynamic implantable continuous blood glucose monitoring system, an implantation tool for implanting a sensor is one of the indispensable devices, and the sensor can be simply and quickly implanted on the human body through the implantation tool.

[0004] The implantation tool in the prior art usually comprises a shell, a push member, a launcher, a sensor and an implantation needle, the push member is buckled and installed in the shell, and the launcher, the sensor and the implantation needle are all arranged on the push member. When a user uses the implantation tool, the push member is unbuckled from the shell, a driving spring drives the push member to move, so that the push member drives the launcher, the sensor and the implantation needle to move synchronously. When the push member moves to a certain distance, the implantation needle pierces into the patient's body, so that the sensor is sent into the subcutaneous tissue of the human body.

[0005] In order to avoid secondary use of the implantation tool and consider safety, the implantation tool in the prior art is provided with a spring arm on the push member. When the push member is unbuckled from the shell and moves to a certain distance, the spring arm is unfolded outward, is blocked by a structure on the shell, and thus the push member is limited to return to the initial position, so as to avoid secondary use of the implantation tool, and also avoid exposure of the implantation needle after use of the implantation tool, so as to improve safety and avoid subsequent injury.

[0006] However, in the prior art, the scheme of arranging the spring arm on the push member has a sliding resistance and friction force from the beginning of movement of the push member, so that the size precision of the spring arm is required to be high. However, the thickness of the spring arm cannot be too large, and if the return force of the spring arm is too large, the spring arm will be deformed, so that the injury protection function is lost. SUMMARY

[0007] The prior art limits the back-off of the pushing member by setting an elastic arm on the pushing member, which has the technical problems of high dimensional accuracy requirement, high processing difficulty, easy deformation of the elastic arm under stress, poor effect of limiting the back-off of the pushing member, and still existing safety hazards. The present application provides a back-off limiting structure in an implant tool, which is provided with a back-off limiting piece, and a rotating driving piece for driving the back-off limiting piece to rotate is arranged on the shell. When the pushing member is moved after being released, the rotating driving piece can drive the back-off limiting piece to rotate, so that the back-off limiting piece is misaligned with the pushing member, thereby limiting the back-off of the pushing member through the misaligned back-off limiting piece. Through such structure, the elastic arm for back-off limiting on the pushing member is no longer needed, thereby reducing the processing difficulty. In addition, the back-off of the pushing member is limited by the misaligned back-off limiting piece, which can withstand greater back-off force, and can better ensure the limitation of the back-off of the pushing member.

[0008] A back-off limiting structure in an implant tool, comprising a shell, a pushing member, and a back-off limiting piece. The pushing member is located in the shell and is snap-connected with the shell. The pushing member has a first position of being snap-connected on the shell and a second position of being moved after being released from the shell. The back-off limiting piece is located in the shell. A rotating driving piece is arranged in the shell and corresponds to the back-off limiting piece, so as to drive the back-off limiting piece to rotate after the pushing member is moved after being released, so that the back-off limiting piece is misaligned with the pushing member, and the back-off of the pushing member from the second position to the first position is limited by the back-off limiting piece.

[0009] Preferably, the back-off limiting piece is snap-connected with the pushing member, and an elastic piece is arranged between the back-off limiting piece and the pushing member, which is used to drive the back-off limiting piece to move back from the second position to the first position. The rotating driving piece is used to drive the back-off limiting piece to rotate when the back-off limiting piece moves back.

[0010] Preferably, a rotating structure cooperating with the rotating driving piece is arranged on the back-off limiting piece. One of the rotating structure and the rotating driving piece is a slope structure, and the other is a bone block which can slide along the slope structure.

[0011] Preferably, the rotating structure is a slope structure, the back-off limiting piece comprises a cap seat and a cap head arranged on the top of the cap seat, the cap head is symmetrically provided with two cap heads, and the two cap heads are respectively provided with the slope structure, and the bone block corresponds to the slope structure one by one.

[0012] Preferably, a cooperation structure is arranged between the retreat-stop member and the push member, the cooperation structure comprising a vertical guide slot and a retreat-stop rib matched with the guide slot, the guide slot being arranged on one of the retreat-stop member and the push member, and the retreat-stop rib being arranged on the other one of the retreat-stop member and the push member. When the retreat-stop member is buckled on the push member, the retreat-stop rib is inserted into the guide slot. When the retreat-stop member moves back, the retreat-stop rib slides out of the guide slot, and the rotation driving member drives the retreat-stop member to rotate so that the retreat-stop rib and the guide slot are dislocated.

[0013] Preferably, the guide slot or the retreat-stop rib is arranged on the outer periphery of the retreat-stop member.

[0014] Preferably, a guide circular groove is arranged in the housing to guide the rotation of the retreat-stop member, and the rotation driving member is arranged on the groove wall of the guide circular groove.

[0015] Preferably, a driving button arranged on the housing is provided with a positioning boss, which is used to limit the rotation of the retreat-stop member after the retreat-stop member is driven to rotate by the rotation driving member.

[0016] Preferably, the retreat-stop member is a needle cap of an implantation tool, which is used to drive a needle of the implantation tool to retreat, and the elastic member is a needle-retreating spring.

[0017] An implantation tool, which comprises the retreat-stop structure, the transmitter, the sensor and the implantation needle of the implantation tool as described in any one of the above. The transmitter is detachably mounted on the push member. The sensor is arranged on the transmitter. The implantation needle is arranged on the push member and passes through the sensor.

[0018] Compared with the prior art, the stop-retreating structure in the implantation tool provided by the application comprises a shell, a pushing piece and a stop-retreating piece; the pushing piece is located in the shell and is buckled with the shell, the pushing piece has a first position buckled on the shell and a second position after being moved off the buckle of the shell; the stop-retreating piece is located in the shell; a rotating driving piece is arranged in the shell, and the rotating driving piece is arranged corresponding to the stop-retreating piece to drive the stop-retreating piece to rotate after the pushing piece is moved off the buckle, so that the stop-retreating piece is dislocated with the pushing piece, and the pushing piece is limited from moving back from the second position to the first position by the stop-retreating piece. The stop-retreating structure in the implantation tool drives the stop-retreating piece to rotate, so that the stop-retreating piece is dislocated with the pushing piece, and the pushing piece is blocked by the stop-retreating piece, and the pushing piece is limited from moving back. Such stop-retreating structure can bear greater back-moving force and can more stably limit the back-moving of the pushing piece. In addition, the elastic arm for stopping back-moving does not need to be arranged on the pushing piece through such structure, so that the processing and manufacturing difficulty can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 A top view of the stop-retreating structure in the implantation tool provided by an embodiment; Figure 2 A sectional view along the direction A-A shown in the figure (the pushing piece and the stop-retreating piece are not moved off the buckle); Figure 1 A sectional view along the direction A-A shown in the figure (the pushing piece and the stop-retreating piece are not moved off the buckle); Figure 3 A sectional view along the direction A-A shown in the figure (the pushing piece and the stop-retreating piece are not moved off the buckle); Figure 1 A sectional view along the direction A-A shown in the figure (the pushing piece and the stop-retreating piece are not moved off the buckle); Figure 4 A perspective structural schematic view of the stop-retreating piece provided by an embodiment; Figure 5 A perspective structural schematic view of the pushing piece provided by an embodiment; Figure 6 A perspective structural schematic view of the stop-retreating piece and the pushing piece provided by an embodiment (after the stop-retreating piece and the pushing piece are separated, and before the stop-retreating piece is rotated); Figure 7 A perspective structural schematic view of the stop-retreating piece and the pushing piece provided by an embodiment (after the stop-retreating piece and the pushing piece are separated, and after the stop-retreating piece is rotated); Figure 8 A perspective view of the shell according to an embodiment is shown in FIG. 1. Figure 9 A perspective view of the stop structure in the implanting tool according to an embodiment is shown in FIG. 2. Figure 10 A perspective view of the implanting tool according to an embodiment is shown in FIG. 3. Figure 9 A partial enlarged view of the B area shown in FIG. 4. Figure 11 A top view of the driving button, the shell and the stopper after being partially cut according to an embodiment is shown in FIG. 5. Figure 12 A top view of the implanting tool according to an embodiment is shown in FIG. 6. Figure 13 A sectional view along the direction of C-C (when not in use) according to an embodiment is shown in FIG. 7. Figure 12 A sectional view along the direction of C-C (after use) according to an embodiment is shown in FIG. 8. Figure 14 Figure 12 A sectional view along the direction of C-C (after use) according to an embodiment is shown in FIG. 9. Explanation of reference signs: The stop structure 100 in the implanting tool, the shell 10, the rotating driving member 11, the limiting arm 12, the guiding circular groove 13, the groove wall 131, the driving button 14, the positioning boss 141, the driving spring 15, the pushing member 20, the clamping spring arm 21, the stopper bone 22, the stopper 30, the rotating structure 31, the guide groove 32, the cap seat 33, the cap head 34, the positioning block 341, the stepped portion 342, the elastic member 40, the needle pressing tube 50, the helical groove 51, the conversion tube 60, the insertion block 61. The transmitter 200. The sensor 300. The implanting needle 400. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that when an element is referred to as being "mounted on", "fixed on" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] ​It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to assist understanding of the content disclosed in the present specification, to be understood and read by those skilled in the art, and are not intended to limit the conditions under which the present application can be implemented, and therefore do not have technical significance. Any modification of structure, change of proportional relationship, or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, shall still fall within the scope of the technical content disclosed by the present application.

[0024] The present application provides a retreat prevention structure in an implantation tool, which comprises a shell, a pushing member and a retreat prevention member; the pushing member is located in the shell and is snap-connected with the shell, the pushing member has a first position of being snapped on the shell and a second position after being moved out of snap connection with the shell; the retreat prevention member is located in the shell; a rotation driving member is arranged in the shell and is arranged corresponding to the retreat prevention member, so as to drive the retreat prevention member to rotate after the pushing member is moved out of snap connection, so that the retreat prevention member is dislocated with the pushing member, and the retreat prevention member is used to limit the pushing member from moving back from the second position to the first position. The retreat prevention structure in the implantation tool drives the retreat prevention member to rotate, so that the retreat prevention member is dislocated with the pushing member, and the pushing member is blocked by the retreat prevention member, and the retreat prevention of the pushing member is limited. Such retreat prevention structure can withstand greater retreat force and can more stably limit the retreat of the pushing member. In addition, the elastic arm for retreat prevention does not need to be arranged on the pushing member through such structure, so that the manufacturing difficulty can be reduced.

[0025] Please refer to Figures 1 to 7 In an embodiment, a retreat prevention structure 100 in an implantation tool is provided, which is mainly used to solve the problems of poor effect of limiting the retreat of the pushing member in the implantation tool in the prior art and greater manufacturing difficulty. The retreat prevention structure 100 in the implantation tool is provided with a retreat prevention member, which is driven to rotate after the pushing member is moved out of snap connection, so that the retreat prevention member and the pushing member are dislocated with each other, and the retreat prevention member is used to block the pushing member, so as to limit the retreat of the pushing member.

[0026] The retreat-stop structure 100 in the implant tool comprises a housing 10, a push member 20 and a retreat-stop member 30. The push member 20 is located in the housing 10 and is snap-connected with the housing 10. The push member 20 has a first position in which the push member 20 is snap-connected with the housing 10, and a second position in which the push member 20 is moved from the housing 10 after being unsnapped. It is to be noted that the "snap" in the embodiment refers to the connection between one component and another component through corresponding snap structures, and the two components can be separated from each other in the corresponding state. The first position is the position of the push member 20 when the implant tool is not used, and at this time the push member 20 is snap-connected with the housing 10. The second position is the position of the push member 20 after the implant tool is used, and at this time the push member 20 has been unsnapped from the housing 10 and is moved a certain distance under the drive of the drive spring. For example, as shown in Figure 2 and Figure 3 , the first position is the position of the push member 20 in Figure 2 , and the second position is the position of the push member 20 in Figure 3 .

[0027] The retreat-stop member 30 is located in the housing 10. The housing 10 is provided with a rotation drive member 11 corresponding to the retreat-stop member 30. The rotation drive member 11 is arranged in the housing 10 corresponding to the retreat-stop member 30, so that when the retreat-stop member 30 is in a specific position state, the rotation drive member 11 can contact the retreat-stop member 30, thereby controlling the position state of the retreat-stop member 30. The rotation drive member 11 is used to drive the retreat-stop member 30 to rotate after the push member 20 is unsnapped and moved, so that the retreat-stop member 30 is dislocated from the push member 20, thereby limiting the push member 20 from moving back from the second position to the first position.

[0028] That is, the rotation drive member 11 drives the retreat-stop member 30 to rotate only after the push member 20 is unsnapped and moved from the housing 10. The rotation drive member 11 drives the retreat-stop member 30 to rotate by a certain angle, so that the retreat-stop member 30 is dislocated from the push member 20 in the circumferential direction, and the retreat-stop member 30 interferes with the push member 20, thereby blocking the push member 20 by the retreat-stop member 30, so that the push member 20 cannot move back to the first position. For example, as shown in Figure 3 , the retreat-stop member 30 is used to block and limit the push member 20 from moving back upward.

[0029] The retreat of the pushing member 20 is limited by the retreat prevention member 30, which can avoid the secondary use of the implant tool, and also avoid the exposure of the implant needle after use, avoid the subsequent misoperation, and improve the safety.

[0030] It can be understood that the prior art implant tool limits the retreat of the pushing member through the elastic arm on the pushing member. When the implant tool is not used, the elastic arm is in the retracted state under the extrusion of the inner wall of the shell. After the implant tool is used, the elastic arm will be unfolded outward after the pushing member moves a certain distance, so that the elastic arm can be blocked by the structure on the shell to limit the retreat of the pushing member. However, the elastic arm has a sliding resistance and friction from the start of the movement of the pushing member, which has a high requirement for the size accuracy of the elastic arm, resulting in a high difficulty in processing and manufacturing. In addition, the size of the elastic arm cannot be too thick, resulting in a small force that the elastic arm can withstand. If the retreat force of the elastic arm is too large, the elastic arm will be deformed, the elastic arm will lose the limiting effect on the pushing member, and the implant tool will lose the misoperation protection function.

[0031] The retreat structure 100 in the implant tool provided in the embodiment can reduce the difficulty in processing and manufacturing by adopting the rotating driving member 11 to cooperate with the retreat prevention member 30, driving the retreat prevention member 30 to rotate, making the retreat prevention member 30 and the pushing member 20 mutually dislocated, thereby blocking the pushing member 20. The retreat prevention member 30 can also withstand a larger retreat force, which can better ensure the retreat of the pushing member 20, and the overall structure will not affect the normal use of the implant tool.

[0032] Preferably, in an embodiment, the retreat prevention piece 30 is buckled to the pushing piece 20, and an elastic piece 40 is arranged between the retreat prevention piece 30 and the pushing piece 20, which is used to drive the retreat prevention piece 30 to move back from the second position to the first position, and the rotating driving piece 11 is used to drive the retreat prevention piece 30 to rotate when the retreat prevention piece 30 moves back. Wherein, the elastic piece refers to a component made of elastic material, which can be deformed under external force, and can restore the initial state after the external force is reduced or eliminated. That is, in this embodiment, the power is provided by the elastic piece 40 to drive the retreat prevention piece 30 to move, and in the process of moving the retreat prevention piece 30, the retreat prevention piece 30 is driven to rotate by the rotating driving piece 11, so that the retreat prevention piece 30 rotates. Wherein, moving back from the second position to the first position only refers to the direction of movement, that is, the elastic piece 40 is used to drive the retreat prevention piece 30 to move back from the direction of the second position to the direction of the first position (as shown in Figure 3 , moving back upwards), and the elastic piece 40 is not limited to driving the retreat prevention piece 40 back to the first position, but can move beyond the first position. In the initial state, the retreat prevention piece 30 is buckled to the pushing piece 20, at this time the elastic piece 40 is in a compressed state, and when the pushing piece 20 is buckled to move to the second position, the retreat prevention piece 30 moves synchronously with the pushing piece 20, and when moving to a certain distance, the elastic piece 40 begins to stretch, thereby driving the retreat prevention piece 30 to move back, so that the retreat prevention piece 30 is separated from the pushing piece 20. After the retreat prevention piece 30 moves back a certain distance, the rotating driving piece 11 will contact the retreat prevention piece 30, so that the retreat prevention piece 30 rotates, so that the retreat prevention piece 30 is dislocated from the pushing piece 20, and the retreat prevention piece 30 blocks the pushing piece 20 from above to limit the retreat of the pushing piece 20. Of course, in other embodiments, the setting position and specific connection structure of the retreat prevention piece 30 can be selected according to actual needs, and it is not necessary to buckle the retreat prevention piece 30 on the pushing piece 20 and drive it by the elastic piece 40, as long as the retreat prevention piece 30 is driven to rotate by the rotating driving piece 11 when the pushing piece 20 is buckled to move, so that the retreat of the pushing piece 20 can be limited by the retreat prevention piece 30. In this embodiment, by buckling the retreat prevention piece 30 on the pushing piece 20 and driving it by the elastic piece 40, the reliability of the position of the retreat prevention piece 30 when the implantation tool is not used can be improved, and the movement and rotation of the retreat prevention piece 30 can also be stably driven.

[0033] Please refer to Figure 13 and Figure 14 , specifically, in one embodiment, the push element 20 is provided with a buckle elastic arm 21, the retreat stopper 30 is arranged at the inner side of the buckle elastic arm 21, the push element 20 buckles the retreat stopper 30 on the push element 20 through the buckle elastic arm 21, and compresses the elastic element 40. When the push element 20 is at the first position, the outer side of the buckle elastic arm 21 is pressed by the limiting arm 12 on the shell 10, so that the buckle elastic arm 21 cannot swing outward, thereby stably buckling the retreat stopper 30 on the push element 20 and stably compressing the elastic element 40. When the push element 20 is buckled and moved by a certain distance, the buckle elastic arm 21 is separated from the limiting arm 12, so that the outward swing of the buckle elastic arm 21 is no longer limited, at this time the elastic element 40 drives the retreat stopper 30 to retreat, presses the buckle elastic arm 21 to swing outward, so that the retreat stopper 30 is buckled from the push element 20. When the retreat stopper 30 moves to a certain distance, the rotation driving element 11 guides the retreat stopper 30 to rotate, so that the retreat stopper 30 is dislocated with the push element 20 in the circumferential direction, thereby allowing the retreat stopper 30 to block the push element 20 from above. Due to the blocking of the retreat stopper 30, the force applied from below the push element 20 cannot drive the push element 20 to retreat.

[0034] Please continue to refer to Figures 1 to 7 , preferably, in one embodiment, the retreat stopper 30 is provided with a rotation structure 31 matched with the rotation driving element 11, wherein one of the rotation structure 31 and the rotation driving element 11 is a slope structure, and the other is a bone block which can slide along the slope structure. That is, when the rotation structure 31 is a slope structure, the rotation driving element 11 is a bone block; when the rotation structure 31 is a bone block, the rotation driving element 11 is a slope structure. In this embodiment, through the cooperation between the bone block and the slope structure, the power of the elastic element 40 driving the retreat stopper 30 to move can be used to drive the retreat stopper 30 to rotate, without the need to additionally apply a rotating power to the retreat stopper 30. When the elastic element 40 drives the retreat stopper 30 to retreat, the rotation structure 31 on the retreat stopper 30 contacts the rotation driving element 11, and the bone block slides along the slope structure to guide the retreat stopper 30 to rotate, thereby converting the linear movement of the retreat stopper 30 into movement while rotating.

[0035] Specifically, in an embodiment, the rotating driving member 11 is a bone block fixedly arranged in the shell 10, and the rotating structure 31 is a slope structure arranged on the retreat-stop member 30. Through this structure design, the manufacturing difficulty can be reduced, and the shell 10 only needs to be additionally provided with a bone block, without the need of additionally providing a protruding slope structure.

[0036] Specifically, in an embodiment, the rotating structure 31 is arranged on the top of the retreat-stop member 30, so as to reduce the manufacturing difficulty, and also to enable the retreat-stop member 30 to be contacted with the rotating driving member 11 earlier, and to ensure that the retreat-stop member 30 can be rotated by the elasticity of the elastic member 40.

[0037] Preferably, in an embodiment, a plurality of rotating structures 31 are sequentially and spacedly arranged along the circumference of the retreat-stop member 30, and each rotating structure 31 is correspondingly provided with one rotating driving member 11. Through the cooperation of the plurality of rotating structures 31 and the plurality of rotating driving members 11 arranged along the circumference, when the retreat-stop member 30 is rotated, the force received by the retreat-stop member 30 can be more stable. Specifically, in an embodiment, two rotating structures 31 are arranged on the retreat-stop member 30, and two rotating driving members 11 are correspondingly arranged on the shell 10.

[0038] Preferably, in an embodiment, a cooperation structure is arranged between the retreat prevention member 30 and the pushing member 20, which cooperation structure comprises a vertical guide groove 32 and a retreat prevention bone 22 matched with the guide groove 32, the guide groove 32 is arranged on one of the retreat prevention member 30 and the pushing member 20, and the retreat prevention bone 22 is arranged on the other one of the retreat prevention member 30 and the pushing member 20. That is, when the guide groove 32 is arranged on the retreat prevention member 30, the retreat prevention bone 22 is arranged on the pushing member 20; when the guide groove 32 is arranged on the pushing member 20, the retreat prevention bone 22 is arranged on the retreat prevention member 30. When the retreat prevention member 30 is buckled on the pushing member 20, the retreat prevention bone 22 is inserted into the guide groove 32. The rotation driving member 11 is used to drive the retreat prevention member 30 to rotate when the retreat prevention bone 22 slides out of the guide groove 32 after the retreat prevention member 30 moves back, so that the retreat prevention bone 22 and the guide groove 32 are misaligned with each other. That is, in an embodiment, after the elastic member 40 drives the retreat prevention member 30 to move back, the retreat prevention member 30 and the pushing member 20 move relatively, and then the rotation driving member 11 contacts the retreat prevention member 30 after the retreat prevention bone 22 exits the guide groove 32. Through the arrangement of the guide groove 32 and the retreat prevention bone 22, the retreat prevention member 30 and the pushing member 20 can be circumferentially positioned, so that the retreat prevention member 30 and the pushing member 20 need to be aligned circumferentially to be inserted relatively; in addition, the retreat prevention bone 22 can block the pushing member 20 when the retreat prevention member 30 rotates.

[0039] Preferably, in an embodiment, the guide groove 32 or the retreat prevention bone 22 is arranged on the outer periphery of the retreat prevention member 30, so that the manufacturing difficulty can be further reduced.

[0040] Specifically, in an embodiment, the retreat prevention member 30 comprises a cap seat 33 and a cap head 34 arranged on the top of the cap seat 33, the guide groove 32 is arranged on the outer periphery of the cap seat 33, and the rotation structure 31 is arranged on the cap head 34.

[0041] In an embodiment, the cap head 34 is symmetrically arranged with two cap heads 34, and the two cap heads 34 are respectively arranged with the inclined surface structure. More specifically, one side surface of the cap head 34 is beveled, so as to form an inclined surface, which is the inclined surface structure. The bone blocks in the shell 10 correspond to the inclined surface structure one by one.

[0042] Specifically, in an embodiment, the guide groove 32 is arranged on the outer periphery of the cap seat 33, and the retreat prevention bone 22 is arranged on the pushing member 20.

[0043] Please refer to 2、 Figure 3And Figure 8 Preferably, in an embodiment, a guide circular groove 13 is arranged in the shell 10 to guide the rotation of the retreat-stop piece 30, and the rotation driving piece 11 is arranged on the groove wall 131 of the guide circular groove 13. Through the arrangement of the guide circular groove 13, when the rotation driving piece 11 contacts the retreat-stop piece 30, the retreat-stop piece 30 can be better guided to rotate, avoiding the retreat-stop piece 30 from yawing. When the retreat-stop piece 30 is moved by a certain distance, a part (specifically, a part of the cap head 34) of the retreat-stop piece 30 will enter the guide circular groove 13, and when the rotation driving piece 11 contacts the rotation structure 31, the rotation driving piece 11 will generate resistance to the retreat-stop piece 30, promoting the retreat-stop piece 30 to rotate, and the groove wall 131 of the guide circular groove 13 will correspondingly abut against and limit the outer wall (specifically, the outer wall of the cap head 34) of the retreat-stop piece 30, so that the retreat-stop piece 30 can only rotate and cannot yaw laterally, ensuring the stability of the rotation process and also ensuring the accuracy of the subsequent position of the retreat-stop piece 30. Through the arrangement of the guide circular groove 13 in the shell 10, the rotation can be guided, and the overall processing difficulty can be reduced.

[0044] Preferably, in an embodiment, the retreat-stop piece 30 is a needle cap for driving the implantation needle to retreat in the implantation tool, and the elastic piece 40 is a needle-retreating spring. That is, in this embodiment, the retreat-stop piece 30 and the elastic piece 40 are not additional structures newly added in the implantation tool, but structures improved by using the existing structures in the implantation tool, specifically, the structure for retracting the needle in the implantation tool is improved, so that the needle cap in the needle-retracting structure of the implantation tool can not only retract the needle but also stop the needle. Of course, in other embodiments, the retreat-stop piece 30 can be an additional component or other component in the structure for retracting the needle in the implantation tool, as long as it can achieve the retreat-stop function. Through this structure design, this embodiment does not need to additionally increase new structure components in the implantation tool, can simplify the overall structure in the implantation tool, does not need to additionally arrange components to occupy the space in the implantation tool, is conducive to the design of the internal structure of the implantation tool, and also makes the overall structure of the implantation tool more compact and simple.

[0045] Please refer to Figure 4 , Figure 9 and Figure 10, preferably, in an embodiment, the retreat-stop structure 100 in the implant tool further comprises a needle pressing tube 50 and a conversion tube 60, the needle pressing tube 50 is used to connect with the implant needle, the conversion tube 60 is connected with the retreat-stop piece 30, and the conversion tube 60 is used to drive the needle pressing tube 50 to unlock and move back. When the elastic piece 40 drives the retreat-stop piece 30 to move back, since the conversion tube 60 is connected with the retreat-stop piece 30, the conversion tube 60 will also move back together, and the conversion tube 60 will unlock the needle pressing tube 50 in the process of moving back, and then drive the needle pressing tube 50 to move, since the implant needle 400 is connected with the needle pressing tube 50, the implant needle 400 will also move back synchronously, so as to realize the automatic needle extraction of the implant needle 400.

[0046] Specifically, in an embodiment, the needle pressing tube 50 is provided with a spiral groove 51, and the conversion tube 60 is provided with an insertion block 61, which is inserted into the spiral groove 51. When the conversion tube 60 moves, the insertion block 61 moves along the spiral groove 51, thereby driving the needle pressing tube 50 to rotate, so as to unlock the needle pressing tube 50, and then the conversion tube 60 drives the needle pressing tube 50 to move for needle extraction.

[0047] Specifically, in an embodiment, the conversion tube 60 is buckled on the retreat-stop piece 30, and the conversion tube 60 is provided with a buckle elastic arm. More specifically, in an embodiment, the top inside of the cap head 34 is provided with a positioning block 341, and the bottom inside of the cap head 34 is provided with a stepped portion 342. The positioning block 341 is used for positioning when the conversion tube 60 is assembled, and in the assembly, the conversion tube 60 can be inserted into the retreat-stop piece 30 from bottom to top, and then positioned by the positioning block 341. The stepped portion 342 is beneficial for the retreat-stop piece 30 to drive the conversion tube 60 to move back.

[0048] Please refer to Figure 11 , preferably, in an embodiment, the driving button 14 on the shell 10 is provided with a positioning boss 141, which is used to limit the retreat-stop piece 30 from rotating back after being driven to rotate by the rotating driving piece 11. When the retreat-stop piece 30 is driven to rotate by the rotating driving piece 11, the positioning boss 141 limits the retreat-stop piece 30, thereby preventing the retreat-stop piece 30 from further rotating, so as to stabilize the position of the retreat-stop piece 30 and ensure the retreat-stop piece 30 to limit the pushing piece 20. For example, as shown in Figure 11As shown, when the rotating driving member 11 drives the cap head 34 to rotate through the rotating structure 31, the rotating driving member 11 is located at the front side of the cap head 34 in the circumferential direction, and the positioning boss 141 is located at the rear side of the cap head 34, so that the cap head 34 can be restricted to rotate clockwise through the rotating driving member 11, and the cap head 34 can be restricted to rotate counterclockwise through the positioning boss 141, so that the stopper 30 cannot rotate again after rotating, thereby ensuring the stability of the position of the stopper 30 and ensuring that the stopper 30 can stably block the pushing member 20.

[0049] Specifically, in an embodiment, the positioning boss 141 is symmetrically provided with two, and the two positioning bosses 141 are provided corresponding to the two cap heads 34.

[0050] Please refer to Figures 12 to 14 Meanwhile, in an embodiment, an implant tool is also provided, which includes the stopper structure 100, the transmitter 200, the sensor 300, and the implant needle 400 in the implant tool. The transmitter 200 is detachably installed on the pushing member 20, the sensor 300 is provided on the transmitter 200, and the implant needle 400 is provided on the pushing member 20 and penetrates through the sensor 300.

[0051] Specifically, in an embodiment, the implant tool is an implant tool applied in a dynamic implantable continuous blood glucose monitoring system.

[0052] Specifically, in an embodiment, the pressing needle tube 50 is connected with the implant needle 400, and the pressing needle tube 50 is rotationally locked on the transmitter 200. Rotational locking means that a component is fastened on another component through rotation, so that the component and the other component are locked and connected with each other through forward rotation of the component, and the component and the other component are unlocked through reverse rotation of the component. Rotational locking can adopt any required structure, such as a threaded structure or a rotating hanging table structure. In an embodiment, the pressing needle tube 50 and the transmitter 200 adopt a rotating hanging table structure to realize rotational locking.

[0053] In an embodiment, the specific use principle of the implanting tool is as follows: after pressing the driving button 14 on the shell 10, the pusher 20 is released from the shell 10, and then the pusher 20 is moved under the driving of the driving spring 15, when the pusher 20 moves to a certain distance, the implanting needle 400 pierces the skin to send a part of the sensor 300 into the subcutaneous tissue of the human body; then, the elastic member 40 drives the retreat stopper 30 to move back, the movement back of the retreat stopper 30 synchronously drives the conversion tube 60, and the conversion tube 60 drives the needle pressing tube 50 to rotate reversely first, so that the needle pressing tube 50 is unlocked from the launcher 200; then the elastic member 40 drives the retreat stopper 30, the conversion tube 60, the needle pressing tube 50 and the implanting needle 400 to move back synchronously by the elastic force, and the implanting needle 400 is automatically extracted from the human body; when the rotating structure 31 on the retreat stopper 30 contacts with the rotating driving member 11, the retreat stopper 30 rotates, and the guide groove 32 is separated from the retreat bone 22 when the retreat stopper 30 is about to rotate, and when the retreat stopper 30 is separated from the pusher 20, the implanting needle 400 is also completely separated from the human body, so that the rotating movement of the retreat stopper 30 does not harm the human body; when the movement of the retreat stopper 30 stops, the retreat stopper 30 generates a certain back-off height difference (at this time, the needle head of the implanting needle 400 is completely above the bottom end surface of the pusher 20), and the back-off height difference limits the back-off distance of the pusher 20. Since the retreat stopper 30 and the pusher 20 are circumferentially misaligned, when the pusher 20 is back-off, the pusher 20 can only back-off to the bottom end surface of the retreat stopper 30 and cannot move upward any more, so that the implanting needle 400 is completely received in the upper part of the pusher 20 and does not expose, thereby avoiding subsequent injuries.

[0054] The above only describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the inventive concept, and these improvements are within the protection scope of the present application.

Claims

1. A retreat prevention structure in an implantation tool, characterized in that, The device comprises a shell, a pushing member and a retreat-preventing member. The pushing member is located in the shell and is buckled with the shell. The retreat-preventing member is located in the shell. The shell is provided with a rotating driving member corresponding to the retreat-preventing member.

2. The retreat prevention structure in an implant tool according to claim 1, characterized in that The rotating driving member drives the retreat-preventing member to rotate when the pushing member is unbuckled, so that the retreat-preventing member is dislocated with the pushing member, and the retreat-preventing member limits the pushing member from moving back from the second position to the first position. The retreat-preventing member is buckled with the pushing member, and an elastic member is arranged between the retreat-preventing member and the pushing member.

3. The retreat prevention structure in an implant tool according to claim 1, characterized in that The rotating driving member drives the retreat-preventing member to rotate when the retreat-preventing member moves back.

4. The retreat prevention structure in an implant tool according to claim 3, characterized in that The retreat-preventing member is provided with a rotating structure matched with the rotating driving member.

5. The retreat prevention structure in an implant tool according to claim 1, characterized in that One of the rotating structure and the rotating driving member is a slope structure, and the other is a bone block that can slide along the slope structure. The rotating structure is a slope structure, and the retreat-preventing member comprises a cap seat and a cap head arranged on the top of the cap seat. The cap head is symmetrically provided with two cap heads, and each of the cap heads is provided with the slope structure.

6. The retreat prevention structure in an implant tool according to claim 5, characterized in that The retreat-preventing member and the pushing member are provided with a matching structure.

7. The retreat prevention structure in an implant tool according to claim 1, characterized in that The matching structure comprises a vertical guide groove and a retreat-preventing bone matched with the guide groove.

8. The retreat prevention structure in an implant tool according to claim 1, characterized in that The guide groove is arranged on one of the retreat-preventing member and the pushing member, and the retreat-preventing bone is arranged on the other.

9. The retreat prevention structure in an implant tool according to any one of claims 1 to 8, characterized in that The retreat-preventing bone is inserted into the guide groove when the retreat-preventing member is buckled on the pushing member.

10. An implantation tool, characterized by The rotating driving member drives the retreat-preventing member to rotate when the retreat-preventing bone slides out of the guide groove when the retreat-preventing member moves back. The guide groove or the retreat-preventing bone is arranged on the outer periphery of the retreat-preventing member. The shell is provided with a guide circular groove for guiding the retreat-preventing member to rotate. The driving button on the shell is provided with a positioning boss for limiting the retreat-preventing member from rotating back after being driven to rotate by the rotating driving member. The retreat-preventing member is a needle cap for driving an implanting needle to retreat in an implanting tool. The device comprises a retreat-preventing structure in an implanting tool, a transmitter, a sensor and an implanting needle. The transmitter is detachably mounted on the pushing member. The sensor is arranged on the transmitter. The implanting needle is arranged on the pushing member and passes through the sensor. The device comprises a retreat-preventing structure in an implanting tool, a transmitter, a sensor and an implanting needle. The transmitter is detachably mounted on the pushing member. The sensor is arranged on the transmitter. The implanting needle is arranged on the pushing member and passes through the sensor.

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