Endocrinology department injection positioning device

Abstract

The application belongs to the technical field of medical apparatus and specifically discloses an injection positioning device for endocrinology department, which comprises a mounting ring and a lifting injection ring for clamping an injection pen, the lifting injection ring can be lifted along a limiting column vertically arranged on the mounting ring, a first compression spring for driving the lifting injection ring to descend is arranged between the mounting ring and the lifting injection ring, a force storage engagement mechanism for locking the lifting injection ring at a force storage position, a three-point pressing parallel trigger mechanism for sensing the contact state with the skin surface and a torque release mechanism for releasing the force storage engagement mechanism according to the state of the three-point pressing parallel trigger mechanism are further included. The force storage release mechanism with the conditional locking and triggering functions is arranged, and the locking state is released only when the device is pressed to be close to the skin and the axis of the injection pen is perpendicular to the skin, so that the force storage mechanism is triggered to drive the injection pen to complete the puncture action, and the intradermal injection risk caused by the angle inclination is eliminated.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically referring to an injection positioning device for endocrinology. Background Technology

[0002] In the treatment of endocrine disorders, injectable administration is a common and crucial method. Especially for the hundreds of millions of diabetic patients worldwide, insulin replacement therapy is central to controlling blood sugar levels and delaying complications. Long-term, high-frequency self-injection via an insulin pen has become an indispensable part of patients' daily blood sugar management. However, in current technological practices, this injection method, which relies entirely on the patient's manual operation, has inherent drawbacks that affect treatment efficacy and safety.

[0003] Firstly, with advancements in precision manufacturing processes, ultra-short needles (4mm or 5mm in length) designed to reduce patient discomfort during punctures have become the mainstream in clinical application. Extensive evidence-based medicine demonstrates that the effectiveness of these needles relies heavily on maintaining a perpendicular injection angle between the needle and the skin surface to ensure stable delivery of the medication to the target subcutaneous tissue layer. However, consistently achieving and confirming this perpendicular angle during self-administration is extremely difficult for patients. This challenge is exacerbated by visual errors and injections in areas that are difficult to observe, such as the thigh or posterior upper arm. If the injection angle is tilted, the effective puncture depth is drastically reduced due to geometric factors, easily leading to the incorrect injection of insulin into the dense intradermal layer instead of the subcutaneous layer. This incorrect injection path not only severely disrupts blood glucose control due to slow and incomplete absorption but can also cause local adipose tissue hyperplasia, forming nodules, resulting in severe pain, and even leakage of valuable medication due to excessive local pressure.

[0004] Secondly, self-injection itself poses a significant psychological challenge to patients. Needle phobia, the anticipation of pain, and the fear of failure often lead to muscle tension, hesitation, unstable force, or insufficient pressure at the moment of puncture. This prevents the needle from penetrating the skin decisively and cleanly in one go, causing the operator to subconsciously perform repeated, superficial, tentative punctures. This ineffective procedure not only greatly increases the patient's pain and psychological burden but also unnecessarily increases the risk of mechanical damage to the injection site and secondary infection. Summary of the Invention

[0005] To address the above issues, this invention provides an injection positioning device for endocrinology. By incorporating a power-release mechanism with conditional locking and triggering functions that works in conjunction with the injection pen, the device is only released when it is pressed firmly against the skin and the axis of the injection pen is perpendicular to the skin. This triggers the power-release mechanism to drive the injection pen to complete the puncture, fundamentally eliminating the risk of intradermal injection due to angle tilt and freeing the operator from the psychological burden of "having to exert force to insert the needle," thus achieving rapid, stable, and standardized puncture.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an injection positioning device for endocrinology, including a mounting ring and a lifting injection ring for holding an injection pen. The lifting injection ring can be raised and lowered along a limiting post vertically provided on the mounting ring. A first compression spring for driving the lifting injection ring to descend is provided between the mounting ring and the lifting injection ring. It also includes a power-accumulating locking mechanism for locking the lifting injection ring in a power-accumulating position, a three-point pressure parallel triggering mechanism for sensing the contact state with the skin surface, and a torque release mechanism for releasing the power-accumulating locking mechanism according to the state of the three-point pressure parallel triggering mechanism.

[0007] Furthermore, the energy storage engagement mechanism includes a locking shaft disposed on the lifting injection ring and capable of engaging and disengaging with a locking hole opened on the limiting post.

[0008] Furthermore, the three-point pressing parallel triggering mechanism includes three hollow pressing columns arranged in a circumferential array along the mounting ring and capable of sliding independently along the axial direction.

[0009] Furthermore, the torque release mechanism includes a rotating ring coaxially and rotatably mounted on the lifting injection ring. The rotating ring is braked by three hollow pressing columns and rotates after the brake is released to drive the locking shaft to disengage from the locking hole.

[0010] Furthermore, the limiting posts are arranged in a circumferential array of three along the axis of the mounting ring, the locking holes are vertically opened on the side of the limiting post facing the axis of the mounting ring, and the locking shaft is movably disposed in multiple fan-shaped channels opened on the lifting injection ring.

[0011] Furthermore, the power-accumulating locking mechanism also includes a base, a first tension spring, and an inclined plate. The base is fixed to the end of the locking shaft away from the locking hole. The first tension spring is connected between the base and the lifting injection ring and is used to drive the locking shaft to engage in the locking hole. The inclined plate is disposed on the base.

[0012] Furthermore, the three-point pressing parallel triggering mechanism also includes an inner shaft and a second compression spring. The inner shaft is vertically fixed to the lower side of the mounting ring. The hollow pressing column is sleeved on the inner shaft and can slide along its axial direction. The second compression spring is sleeved on the inner shaft and its two ends abut against the mounting ring and the hollow pressing column, respectively. The hollow pressing column is vertically engaged and slides through the ring wall of the lifting injection ring.

[0013] Furthermore, the torque release mechanism also includes a retaining rail, a trigger rod, a rotating seat, and a second tension spring. The retaining rail is fixed to the lower side of the lifting injection ring, and the rotating ring is rotatably mounted on the lower side of the lifting injection ring via the retaining rail. The rotating seat is mounted on the rotating ring, and the second tension spring is connected between the rotating seat and the retaining rail to provide the reset torque. The trigger rod is vertically mounted on the rotating ring. When the rotating ring rotates under the action of the reset torque, the trigger rod moves along a circumferential trajectory and actuates the inclined plate to drive the retaining shaft away from the retaining hole. The number of the second tension spring and the trigger rod is equal to the number of the limiting posts.

[0014] Furthermore, the swivel ring has three evenly staggered first sector-shaped holes and second sector-shaped holes arranged in a circular array along the axis. Both the first sector-shaped holes and the second sector-shaped holes allow the hollow pressing post to pass through. When the swivel ring is manually rotated to the torque storage position, the hollow pressing post is surrounded by the first sector-shaped holes. After the rotation lock is released, the swivel ring rotates back to its original position, so that after the trigger rod moves the inclined plate, the hollow pressing post is surrounded by the second sector-shaped holes.

[0015] Furthermore, a fan-shaped groove is provided in the middle of the hollow pressing column facing the axis of the mounting ring; when the hollow pressing column is in the initial position without being pressed, its unopened solid part can block the rotation of the rotating ring in the first fan-shaped hole; when the three hollow pressing columns are synchronously axially displaced so that the fan-shaped grooves on them are all at the same height as the outer edge of the rotating ring, the unopened edge of the rotating ring can rotate freely in the fan-shaped groove to achieve the locking release.

[0016] Furthermore, the torque release mechanism also includes an arc-shaped guide plate, which is fixed on the rail and used to guide the second tension spring along an arc-shaped path during its extension and contraction.

[0017] Furthermore, it also includes a clamping mechanism disposed on the lifting injection ring. The clamping mechanism includes multiple supports, a propulsion shaft, a retaining ring, and a rotating rod arranged in a circumferential array along the lifting injection ring. The supports are disposed on the outer ring wall of the lifting injection ring. The propulsion shaft is radially slidably engaged and inserted into the lifting injection ring, and its front end is provided with an arc-shaped clamping plate. The outer surface of the rear end of the propulsion shaft is provided with threads. The retaining ring is engaged and rotatably disposed on the support. The retaining ring is threadedly connected to the propulsion shaft. The rotating rod is used to drive the retaining ring to rotate so that the propulsion shaft generates radial displacement.

[0018] Furthermore, the lifting injection ring has three collars arranged in a circumferential array on its edge. The collars are slidably sleeved on the limiting post. The first compression spring is sleeved on the limiting post and its two ends abut against the mounting ring and the collar respectively. The locking shaft can vertically engage and penetrate through the junction of the lifting injection ring and the collar and extend into the collar.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows:

[0020] (1) This invention achieves forced vertical calibration of the injection angle by setting up a precise mechanical linkage mechanism, which fundamentally eliminates the risk of intradermal injection caused by angle tilt. The device is triggered by a three-point pressing parallel triggering mechanism. The three hollow pressing columns in the mechanism must be subjected to uniform pressure and produce equal axial displacement at the same time, so that the fan-shaped grooves on them are aligned with the ring body of the rotating ring at the same time, so as to release the locking of the torque release mechanism. This design cleverly transforms the geometric condition of "the device is parallel to the skin surface" into the only mechanical condition of "mechanism unlocking". Therefore, the injection action can only be triggered when the user presses the entire device vertically on the skin, ensuring that the injection pen perpendicular to the mounting ring can be punctured in the correct posture, ensuring that the drug solution is accurately delivered to the subcutaneous tissue, and significantly improving the effectiveness and safety of treatment.

[0021] (2) This invention liberates users from the psychological burden and operational uncertainty of having to exert force to complete the puncture through the energy storage and release mode, realizing fast, stable and standardized automatic puncture. Before injection, the user pre-compresses the first compression spring by pulling up the lifting injection ring, and the energy storage locking mechanism locks it, thereby pre-storing the energy required for puncture. During injection, the user's action is no longer a fearful and hesitant "puncture", but simply pressing the device down to fit the skin. Once the vertical condition is met, the energy storage locking mechanism is automatically released, and the powerful first compression spring instantly drives the lifting injection ring and injection pen to complete the puncture with a constant, rapid and standardized force and speed. This design not only greatly reduces the patient's pain and psychological fear, avoids repeated attempts and tissue damage caused by improper force, but also ensures that each puncture is crisp and clean, improving the standardization and comfort of the operation.

[0022] (3) The present invention has high versatility and compatibility and can be used with most standardized injection pens on the market. The clamping mechanism of the device is an adjustable universal fixed platform that can stably and reliably clamp the pen bodies of commercially available injection pens of different diameters. This design means that the device does not require any special design or modification of the existing injection pens. Users can directly put their own familiar injection pens into the device. This not only greatly reduces the threshold for use and additional costs, making it more convenient for patients, but also makes the present invention a seamless auxiliary tool that can be integrated into the existing treatment system. It has strong practicality, economy and wide market adaptability. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of an injection positioning device for endocrinology proposed in this invention.

[0024] Figure 2 This is an exploded structural diagram showing the positional relationship between the injection pen and the mounting ring of an injection positioning device for endocrinology proposed in this invention.

[0025] Figure 3 This is an exploded structural diagram showing the positional relationship between the hollow pressing column and the lifting injection ring of an injection positioning device for endocrinology proposed in this invention.

[0026] Figure 4 This is a schematic diagram of the structural relationship between the track and the rotating ring of an injection positioning device for endocrinology proposed in this invention.

[0027] Figure 5 This is a schematic diagram showing the positional relationship between the lifting injection ring and the clamping mechanism of an injection positioning device for endocrinology proposed in this invention.

[0028] Figure 6 This is a schematic diagram showing the structural relationship between the accumulating locking mechanism and the lifting injection ring of an injection positioning device for endocrinology proposed in this invention.

[0029] Figure 7 This is an exploded structural diagram showing the relationship between the torque release mechanism and the position of the lifting injection ring in an injection positioning device for endocrinology proposed in this invention.

[0030] Figure 8 for Figure 4 Enlarged view of section A in the middle.

[0031] Figure 9 This is a motion trajectory diagram of the trigger rod of an injection positioning device for endocrinology proposed in this invention.

[0032] Figure 10This is a motion trajectory diagram of the lifting injection ring of an injection positioning device for endocrinology proposed in this invention.

[0033] The components include: 1. Mounting ring; 11. Limiting post; 2. Lifting injection ring; 21. Collar; 22. First compression spring; 23. Fan-shaped channel; 3. Power storage locking mechanism; 31. Locking shaft; 32. Base; 33. First tension spring; 34. Locking hole; 35. Inclined plate; 4. Three-point pressing parallel triggering mechanism; 41. Inner shaft; 42. Hollow pressing post; 43. Second compression spring; 5. Torque release mechanism; 51. Locking rail; 52. Rotating ring; 521. First fan-shaped hole; 522. Second fan-shaped hole; 53. Trigger rod; 54. Fan-shaped groove; 55. Rotating seat; 56. Arc-shaped guide plate; 57. Second tension spring; 6. Clamping mechanism; 61. Support; 62. Push shaft; 63. Arc-shaped clamping plate; 64. Locking ring; 65. Rotating rod; 7. Injection pen.

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10As shown, this invention proposes an injection positioning device for endocrinology. Its overall frame consists of a mounting ring 1 and a lifting injection ring 2. The mounting ring 1 serves as a base, with three limiting posts 11 arranged vertically along a circumferential array on its lower side. The lifting injection ring 2 is used to indirectly hold the injection pen 7, and its edge is provided with three collars 21. The collars 21 are slidably sleeved on the limiting posts 11, so that the lifting injection ring 2 can rise and fall stably only along the axial direction of the limiting posts 11. On each limiting post 11, a first compression spring 22 is sleeved, with its two ends abutting against the lower surface of the mounting ring 1 and the upper surface of the collar 21, respectively. When the lifting injection ring 2 is pulled upward by an external force, the first compression spring 22 is compressed, thereby storing potential energy for subsequent injection puncture.

[0038] To lock the lifting injection ring 2 in the stored position after compressing the first compression spring 22, the present invention provides a stored locking mechanism 3. This mechanism includes three locking shafts 31, which are respectively movably disposed in three fan-shaped channels 23 opened on the lifting injection ring 2. They can vertically lock through the junction of the lifting injection ring 2 and the collar 21 and penetrate into the collar 21. Each limiting post 11 has a locking hole 34 in the middle of its side facing the axis of the mounting ring 1. When the lifting injection ring 2 is pulled up to the predetermined position, the front end of the locking shaft 31 can align with the locking hole 34 and lock into it. The rear end of the locking shaft 31 (the end away from the locking hole 34) is fixed with a base 32. A first tension spring 33 is connected between the base 32 and the lifting injection ring 2. The first tension spring 33 always provides a driving force to ensure that the locking shaft 31 can automatically and reliably lock into the locking hole 34 when aligned with it. The base 32 is also provided with an inclined plate 35, which will participate in the subsequent release action.

[0039] To sense the contact state between the device and the skin and determine whether it is perpendicular, the present invention provides a three-point pressing parallel trigger mechanism 4. This mechanism includes three hollow pressing columns 42 arranged in a circular array along the mounting ring 1. Specifically, three inner shafts 41 are vertically fixed on the lower side of the mounting ring 1. Each hollow pressing column 42 is sleeved on the corresponding inner shaft 41 and can slide independently along its axial direction. A second compression spring 43 is sleeved between the mounting ring 1 and each hollow pressing column 42 to push the hollow pressing column 42 to its initial extended position when it is not compressed. Each hollow pressing column 42 is vertically engaged and slides through the ring wall of the lifting injection ring 2, and its lower end face is used to directly contact the patient's skin.

[0040] To release the power-accumulating engagement mechanism 3 based on the state of the three-point pressing parallel trigger mechanism 4, this invention includes a torque release mechanism 5. The core component of this mechanism is a rotating ring 52, which is coaxially and rotatably mounted below the lifting injection ring 2 via three rails 51 fixed to the lower side of the ring 2. The rotating ring 52 has three rotating seats 55, each connected to a fixed rail 51 by a second tension spring 57, which provides a reset torque for the rotating ring 52. When the rotating ring 52 is manually rotated to the power-accumulating position, the second tension spring 57 is stretched, storing torsional potential energy. To guide the second tension spring 57 along a preset arc-shaped path during stretching and contraction, and to prevent interference with the injection pen 7 at the center of the device, an arc-shaped... Three trigger rods 53 are vertically arranged on the guide plate 56 and the rotating ring 52. They are located in the fan-shaped channel 23. When the rotating ring 52 rotates under the action of the reset torque, the trigger rods 53 will move along the circumferential trajectory and push the inclined plate 35 on the base 32 of the locking shaft 31 in the energy storage locking mechanism 3. Through the force conversion action of the inclined plate, the circumferential motion of the trigger rods 53 is converted into a linear motion that drives the locking shaft 31 radially away from the locking hole 34, thereby making it disengage from the locking hole 34. In order to save stroke and energy, the front end of the locking shaft 31 can be designed as a hemispherical shape. The trigger rods 53 only need to pull the locking shaft 31 out to the critical state where its hemispherical part is still in the locking hole 34. Subsequently, under the strong spontaneous thrust of the first compression spring 22, the locking shaft 31 can automatically and completely get rid of the restraint of the locking hole 34.

[0041] The locking and unlocking logic of the torque release mechanism 5 is achieved through the coordinated operation of the rotating ring 52 and the three hollow pressing posts 42. The rotating ring 52 has three evenly staggered first sector-shaped holes 521 and three second sector-shaped holes 522 arranged in a circular array along its axis. The first sector-shaped holes 521 and the second sector-shaped holes 522 are the same in shape and size. Their positional relationship is as follows: when the rotating ring 52 rotates a specific angle (60 degrees), the position of the first sector-shaped hole 521, which was originally aligned with the hollow pressing post 42, will be replaced by the second sector-shaped hole 522. Simultaneously, the center of each hollow pressing post 42, facing... On one side of the axis of the mounting ring 1, there are fan-shaped grooves 54. The relationship between them is as follows: When the body of the hollow pressing post 42 is located in the first fan-shaped hole 521 or the second fan-shaped hole 522, the hollow pressing post 42 can move freely axially without being blocked by the rotating ring 52. At this time, the body of the hollow pressing post 42 (the unopened solid part) will prevent the ring edge (non-opened part) of the rotating ring 52 from rotating. When the ring edge (non-opened part) of the rotating ring 52 is located in the fan-shaped groove 54 of the hollow pressing post 42, the rotating ring 52 can rotate freely without being blocked by the hollow pressing post 42.

[0042] To stably fix the injection pen 7 at the center of the device and make its axis perpendicular to the plane of the mounting ring 1, the present invention also provides a clamping mechanism 6. This mechanism includes multiple supports 61 arranged in a circumferential array along the outer ring wall of the lifting injection ring 2. The push shaft 62 is radially slidably engaged and inserted into the lifting injection ring 2. Its front end is provided with an arc-shaped clamping plate 63 to fit the pen body of the injection pen 7. The outer surface of the rear end of the push shaft 62 is provided with threads. A retaining ring 64 is rotatably engaged on the support 61 and threadedly connected to the threaded section of the push shaft 62. Since the push shaft 62 is constrained by the lifting injection ring 2 and can only slide radially and cannot rotate, when the retaining ring 64 is driven to rotate by the rotating rod 65, the push shaft 62 will generate a pure radial displacement (extend or retract) under the action of the threaded pair, thereby clamping or releasing the injection pen 7 and reliably self-locking.

[0043] The specific work process is as follows:

[0044] The first step is preparation and power accumulation. The operator first inverts the device or presses it onto a flat surface. The operator simultaneously presses the three hollow pressing posts 42, overcoming the elastic force of the second compression spring 43, until the fan-shaped grooves 54 on them are all at the same height as the outer edge of the rotating ring 52. At this point, the rotation lock of the rotating ring 52 is released. Then, the rotating ring 52 is manually rotated, overcoming the tension of the second tension spring 57, until the rotating seat 55 on it is blocked by the adjacent retaining rail 51, reaching the torque accumulation limit position. At this position, the column of the hollow pressing post 42 is exactly located within the first fan-shaped hole 521. At this point, the pressure on the hollow pressing posts 42 is released, and they... Under the action of the second compression spring 43, it resets and passes through the first sector hole 521, while its sector groove 54 moves to the bottom of the rotating ring 52. Since the solid part of the hollow pressing column 42 will block the rotation of the rotating ring 52, the rotating ring 52 is reliably locked in the torque storage state. Then, the operator manually pulls up the lifting injection ring 2 (and the rotating ring 52 below it) to compress the first compression spring 22 until the locking shaft 31 is heard or felt to be locked into the locking hole 34 on the limiting column 11 under the action of the first tension spring 33, completing the storage of puncture potential energy. At this time, the hollow pressing column 42 will not be moved due to its position.

[0045] The second step is installation and positioning. Insert the pre-dose injection pen 7 into the center of the mounting ring 1 until its needle part passes through the channel inside the lifting injection ring 2 and passes a fixed distance (to ensure the accuracy of subsequent puncture force and distance). Then, operate the rotating rod 65 one by one to drive the clamping mechanism 6, so that the arc-shaped clamping plate 63 firmly clamps the injection pen 7, ensuring that its axis is perpendicular to the mounting ring 1.

[0046] The third step is triggering and injection. The lower end of the entire device (i.e., the end faces of the three hollow pressing columns 42) is pressed vertically against the skin at the injection site. During the downward pressure, the hollow pressing columns 42 first contact the skin and begin to be compressed, moving upward relative to the lifting injection ring 2. The key point is that the force on the three hollow pressing columns 42 is uniform only when the device is completely perpendicular to the skin surface, and their axial displacement is synchronous and equal. The locking of the rotating ring 52 is completely released only when the three hollow pressing columns 42 move upward synchronously, causing their three fan-shaped grooves 54 to simultaneously reach and align with the outer edge of the rotating ring 52. If the device is tilted, the upward displacement of the three hollow pressing columns 42 will inevitably be different, and at least one of the hollow pressing columns 42's solid parts will continue to block the rotation of the rotating ring 52, thus preventing it from rotating. Once the vertical condition is met, the rotating ring 52 is released and rotates rapidly under the reset torque stored in the second tension spring 57. The trigger rod 53 on it moves accordingly and moves the inclined plate 35, pulling the locking shaft 31 out of the locking hole 34. The locking of the lifting injection ring 2 is instantly released. Under the strong thrust released by the first compression spring 22, the injection pen 7 moves downward quickly and stably, allowing its needle to complete a standard and clean subcutaneous puncture. At this time, the column of the hollow pressing column 42 is located in the rotated second sector hole 522. Therefore, the rotating ring 52 will not drive the hollow pressing column 42 to press down, so that the lifting injection ring 2 slides down relative to the hollow pressing column 42 to achieve puncture. After the puncture is completed, the operator manually presses the drug administration button at the end of the injection pen 7 to complete the drug injection.

[0047] The fourth step is resetting. After the injection is complete, remove the entire device from the skin, reverse the operation of each component, and reset it under the action of the springs. Then you are ready to perform the next injection.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0050] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An injection positioning device for endocrinology, comprising a mounting ring (1) and a lifting injection ring (2) for holding an injection pen (7), characterized in that: The lifting injection ring (2) can be raised and lowered along the limiting post (11) vertically provided on the mounting ring (1). A first compression spring (22) for driving the lifting injection ring (2) to descend is provided between the mounting ring (1) and the lifting injection ring (2). It also includes a power-saving locking mechanism (3) for locking the lifting injection ring (2) in the power-saving position, a three-point pressing parallel triggering mechanism (4) for sensing the contact state with the skin surface, and a torque release mechanism (5) for releasing the power-saving locking mechanism (3) according to the state of the three-point pressing parallel triggering mechanism (4). The power storage engagement mechanism (3) includes a locking shaft (31) disposed on the lifting injection ring (2) and capable of engaging and disengaging with the locking hole (34) opened on the limiting post (11). The three-point pressing parallel triggering mechanism (4) includes three hollow pressing columns (42) arranged in a circumferential array along the mounting ring (1) and capable of sliding independently along the axial direction. The torque release mechanism (5) includes a rotating ring (52) coaxially and rotatably mounted on the lifting injection ring (2). The rotating ring (52) is braked by three hollow pressing columns (42) and rotates after the brake is released to drive the locking shaft (31) to disengage from the locking hole (34).

2. The injection positioning device for endocrinology according to claim 1, characterized in that: The limiting post (11) is arranged in a circumferential array along the axis of the mounting ring (1). The locking hole (34) is vertically opened on the side of the limiting post (11) facing the axis of the mounting ring (1). The locking shaft (31) is movably arranged in multiple fan-shaped channels (23) opened on the lifting injection ring (2).

3. An injection positioning device for endocrinology according to claim 2, characterized in that: The power storage locking mechanism (3) also includes a base (32), a first tension spring (33) and an inclined plate (35). The base (32) is fixed to the end of the locking shaft (31) away from the locking hole (34). The first tension spring (33) is connected between the base (32) and the lifting injection ring (2) and is used to drive the locking shaft (31) to lock into the locking hole (34). The inclined plate (35) is provided on the base (32).

4. An injection positioning device for endocrinology according to claim 3, characterized in that: The three-point pressing parallel trigger mechanism (4) also includes an inner shaft (41) and a second compression spring (43). The inner shaft (41) is vertically fixed to the lower side of the mounting ring (1). The hollow pressing column (42) is sleeved on the inner shaft (41) and can slide along its axial direction. The second compression spring (43) is sleeved on the inner shaft (41) and its two ends abut against the mounting ring (1) and the hollow pressing column (42) respectively. The hollow pressing column (42) is vertically engaged and slides through the ring wall of the lifting injection ring (2).

5. An injection positioning device for endocrinology according to claim 4, characterized in that: The torque release mechanism (5) further includes a retaining rail (51), a trigger rod (53), a rotating seat (55), and a second tension spring (57). The retaining rail (51) is fixed to the lower side of the lifting injection ring (2). The rotating ring (52) is engaged and rotated on the lower side of the lifting injection ring (2) through the retaining rail (51). The rotating seat (55) is located on the rotating ring (52). The second tension spring (57) is connected between the rotating seat (55) and the retaining rail (51) and is used to provide the reset torque. The trigger rod (53) is vertically located on the rotating ring (52). When the rotating ring (52) rotates under the action of the reset torque, the trigger rod (53) moves along the circumferential trajectory and pushes the inclined plate (35) to drive the retaining shaft (31) away from the retaining hole (34). The number of the second tension spring (57) and the trigger rod (53) is equal to the number of the limiting post (11).

6. An injection positioning device for endocrinology according to claim 5, characterized in that: The swivel ring (52) has three evenly staggered first sector-shaped holes (521) and second sector-shaped holes (522) arranged in a circular array along the axis. Both the first sector-shaped holes (521) and the second sector-shaped holes (522) allow the hollow pressing post (42) to pass through. When the swivel ring (52) is manually rotated to the torque storage position, the hollow pressing post (42) is surrounded by the first sector-shaped hole (521). After the rotation lock is released, the swivel ring (52) rotates back to its original position, so that after the trigger rod (53) moves the inclined plate (35), the hollow pressing post (42) is surrounded by the second sector-shaped hole (522).

7. An injection positioning device for endocrinology according to claim 6, characterized in that: The hollow pressing post (42) has a fan-shaped groove (54) on the side facing the axis of the mounting ring (1) in the middle. When the hollow pressing post (42) is in the initial position without being pressed, its unopened solid part can block the rotation of the rotating ring (52) in the first fan-shaped hole (521). When the three hollow pressing posts (42) are axially displaced synchronously so that the fan-shaped grooves (54) on them are all at the same height as the outer edge of the rotating ring (52), the unopened edge of the rotating ring (52) can rotate freely in the fan-shaped groove (54) to achieve the locking release.

8. An injection positioning device for endocrinology according to claim 7, characterized in that: The torque release mechanism (5) also includes an arc-shaped guide plate (56), which is fixed on the rail (51) and is used to guide the second tension spring (57) in an arc-shaped path when it is stretched and contracted.

9. An injection positioning device for endocrinology according to claim 8, characterized in that: It also includes a clamping mechanism (6) provided on the lifting injection ring (2). The clamping mechanism (6) includes a plurality of supports (61), a propulsion shaft (62), a retaining ring (64) and a rotating rod (65) arranged in a circumferential array along the lifting injection ring (2). The supports (61) are provided on the outer ring wall of the lifting injection ring (2). The propulsion shaft (62) is radially slidably engaged and inserted into the lifting injection ring (2) and its front end is provided with an arc-shaped clamping plate (63). The outer surface of the rear end of the propulsion shaft (62) is provided with a thread. The retaining ring (64) is engaged and rotatably disposed on the supports (61). The retaining ring (64) is threadedly connected to the propulsion shaft (62). The rotating rod (65) is used to drive the retaining ring (64) to rotate so that the propulsion shaft (62) generates radial displacement.

10. An injection positioning device for endocrinology according to claim 9, characterized in that: The lifting injection ring (2) has three collars (21) arranged in a circumferential array on its edge. The collars (21) are slidably sleeved on the limiting post (11). The first compression spring (22) is sleeved on the limiting post (11) and its two ends abut against the mounting ring (1) and the collar (21) respectively. The locking shaft (31) can vertically engage and penetrate through the junction of the lifting injection ring (2) and the collar (21) and extend into the collar (21).

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