Integrated needle assisting device

Abstract

The integrated needle assisting device comprises a needle assisting unit and a medicine storage unit, the needle assisting unit comprises a needle feeding assembly and a triggering assembly, the needle feeding assembly comprises a movable needle base, the triggering assembly comprises a rotating piece, the rotating piece is located on the peripheral side of the movable needle base, and a groove matched with the movable needle base in shape is formed in the rotating piece. The movable needle seat slides back and forth in the groove to drive a needle tube assembly on the movable needle seat to move, and the needle tube assembly is communicated with a medicine storage assembly in the medicine storage unit; the rotating part is arranged to be matched with the movable needle base, when the rotating part is adjusted and the groove in the rotating part corresponds to the movable needle base, the movable needle base is inserted into the rotating part to drive the needle tube assembly to move to achieve needle assisting, and the needle tube assembly is connected with the medicine storage assembly to achieve medicine feeding. Based on the arrangement, needle assisting can be achieved only by adjusting to drive the rotating piece to rotate, the operation difficulty of a user is reduced, the learning cost is reduced, the needle assisting efficiency is high, and therefore damage to equipment or the user caused by misoperation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of needle assisting, in particular to an integrated needle assisting device. Background Art

[0002] Due to imbalanced lifestyle and eating habits, endocrine disorders or lack of exercise, the relative proportions of various hormones may be disrupted, which will affect the normal secretion of the pancreas and may lead to diabetes. In the endocrinology department, patients will cooperate with doctors to inject insulin to maintain blood sugar stability, and medical staff will use insulin pens to inject insulin into the patient's subcutaneous tissue.

[0003] The injection site of insulin is generally chosen in the abdomen because the belly is rich in fat and the pain is not strong. However, the existing insulin pens lack auxiliary adjustment devices to ensure the correct injection of insulin during needle insertion. It is easy for medical staff or patients to control the insertion angle of the insulin pen by themselves and it is easy to get it wrong. The operation requirements are relatively strict and the learning cost is high. It is easy to damage the equipment or even the operator himself due to misoperation. In addition, the existing needle aid is separated from the drug reservoir, and there are many consumables. The large size is not convenient for daily carrying, and the external pipeline is at risk of being folded and blocked during the patient's wearing, which is not conducive to patient use. Utility Model Content

[0004] In view of the shortcomings of the prior art, an integrated needle-assisting device is proposed, which solves the problems in the above-mentioned background technology that the existing needle-assisting methods are mostly manual insertion or the needle-assisting device is separated from the medicine reservoir, with numerous consumables, complicated operation, and not conducive to patient use.

[0005] In order to achieve the above purpose, the utility model proposes the following technologies to achieve it:

[0006] An integrated needle-assisting device includes a needle-assisting unit and a medicine storage unit. The needle-assisting unit includes a needle feeding assembly and a trigger assembly. The needle feeding assembly includes a movable needle seat. The trigger assembly includes a rotating part. The rotating part is located on the peripheral side of the movable needle seat. A groove matching the shape of the movable needle seat is provided on the rotating part. The movable needle seat slides back and forth in the groove to drive the needle tube assembly on the movable needle seat to move. The needle tube assembly is connected to the medicine storage assembly in the medicine storage unit.

[0007] Furthermore, the movable needle seat includes a top plate, and first limiting mechanisms are relatively arranged on both sides of the top plate, and second limiting mechanisms matching the first limiting mechanisms are relatively arranged on both sides inside the rotating member, and the sliding of the movable needle seat in the rotating member is achieved through the cooperation of the first limiting mechanism and the second limiting mechanism.

[0008] Furthermore, the first limiting mechanism includes a limiting block, one side of which is set as a first inclined surface, and the second limiting mechanism includes a stopper, which is provided with a second inclined surface matching the first inclined surface, and a receiving groove matching the shape of the limiting block is formed between the stoppers.

[0009] Furthermore, the needle tube assembly includes a liquid delivery mechanism and a retention mechanism, the liquid delivery mechanism includes a first needle fixed on a movable needle seat, the retention mechanism is sleeved on the periphery of the first needle and slidably connected to the first needle, and a clamping mechanism matching the retention mechanism is provided on the peripheral side of the retention mechanism, and the clamping mechanism is installed on the base.

[0010] Furthermore, the indwelling mechanism includes an indwelling catheter and an indwelling catheter seat, the indwelling catheter is fixed on the indwelling catheter seat and is sleeved on the periphery of the first needle, the indwelling catheter seat is provided with a clamping block, and the clamping mechanism includes a fixing platform fixed on the base, and the fixing platform is provided with a clamping groove matching the clamping block.

[0011] Furthermore, the liquid delivery mechanism also includes a second needle and a catheter, the drug storage assembly includes a drug storage container, the second needle is inserted into the movable needle seat, the second needle is respectively connected to the first needle and the catheter, the catheter is connected to the drug storage container through a third needle, and the catheter is installed in a catheter direction groove opened on the base.

[0012] Furthermore, the needle-assisting unit also includes a guide assembly, which includes a guide shell, a guide column and a guide groove. The guide shell is arranged on the outer shell, the movable needle seat is slidably connected in the guide shell, the guide column is arranged in the guide shell, and the guide groove is arranged on the fixed platform. The guide column and the guide groove are respectively located on the inner side and the outer side of the movable needle seat.

[0013] Furthermore, the trigger unit also includes a positioning assembly, which includes a ratchet and a pawl, wherein the ratchet is arranged on the rotating member, and the pawl is rotatably connected to the base and is arranged on the peripheral side of the ratchet. When the pawl is engaged with the ratchet, the rotating member is clamped and positioned to limit the reverse rotation of the rotating member.

[0014] Furthermore, the trigger unit also includes a driving component, which includes a connecting column and a driving block. The connecting column is fixed on the rotating part, the connecting column passes through the shell and is slidably connected to the shell, the connecting column is clamped on the driving block, the driving block is rotatably connected to the shell, and the rotating driving block drives the rotating part to rotate in the shell through the connecting column.

[0015] Furthermore, a silicone pad is provided in the fixing platform, a silicone pad is clamped in the silicone pad, a through hole is opened at the bottom of the silicone pad, the indwelling catheter passes through the silicone pad and the through hole as the movable needle seat moves, and the silicone pad is clamped on the peripheral side of the indwelling catheter.

[0016] Compared with the prior art, the comprehensive effects brought by the utility model include:

[0017] (1) A rotating member is arranged to cooperate with a movable needle seat, and the relative position of the movable needle seat and the rotating member is changed by adjusting the rotating member. When the groove on the rotating member corresponds to the movable needle seat, the movable needle seat is inserted into the rotating member to drive the needle tube assembly to move to achieve needle assistance, and the needle tube assembly is connected to the drug storage assembly to achieve drug delivery. Based on the above arrangement, needle assistance can be achieved by simply adjusting the rotating member to drive the rotating member to rotate, which reduces the user's operating difficulty and learning cost, and has a high needle assistance efficiency, thereby avoiding damage to the equipment or the user caused by misoperation.

[0018] (2) The needle-assisting unit and the drug storage unit are arranged in the same housing to achieve integration, thereby avoiding the separation of the needle-assisting device and the drug liquid pump body, which results in a larger volume, reducing the overall volume of the needle-assisting device, and facilitating daily carrying by users; at the same time, the above arrangement allows the drug delivery pipeline to be protected by the housing, avoiding the external placement of the pipeline to be easily affected by the environment, resulting in damage that affects normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the exploded structure of the integrated needle-assisting device according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the needle-assisting unit of the embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the movable needle seat in an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the movable needle seat in an embodiment of the utility model when viewed from above;

[0024] Figure 6 This is a schematic diagram of the structure of the rotating part of the embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the top view of the rotating member of the embodiment of the utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the housing of an embodiment of the utility model when viewed from the bottom;

[0027] Fig. 9This is a schematic diagram of the external structure of the housing of an embodiment of the utility model;

[0028] Fig.10 This is a schematic diagram of the local structure of the initial state of the embodiment of the utility model;

[0029] Fig.11 for Fig.10 Schematic diagram of the structure at A in the middle;

[0030] Fig.12 This is a schematic diagram of the partial internal structure of the embodiment of the utility model in the initial state;

[0031] Fig.13 This is a schematic diagram of the local structure of the needle-assisting state of the embodiment of the utility model;

[0032] Fig.14 This is a schematic diagram of the partial internal structure of the embodiment of the utility model in the needle-assisting state;

[0033] Fig.15 This is a schematic diagram of the local structure of the embodiment of the utility model in the needle-retracting state;

[0034] Fig.16 It is a schematic diagram of the partial internal structure of the embodiment of the utility model in the needle closing state.

[0035] Legend: 1. Shell; 2. Base; 3. Moving needle seat; 4. Rotating part; 5. Limit block; 6. Stop block; 7. First needle; 8. Indwelling catheter; 9. Indwelling catheter seat; 10. Clamping block; 11. Fixed platform; 12. Second needle; 13. Catheter; 14. Third needle; 15. Guide column; 16. Guide groove; 17. Guide shell; 18. Ratchet; 19. Paw; 20. Connecting column; 21. Driving block; 22. Silicone pad seat; 23. Silicone pad; 24. Spring; 25. Transition hole. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the utility model.

[0037] In this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "top", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0038] like Figures 1 to 16 As shown, the integrated needle-assisting device includes a needle-assisting unit and a medicine storage unit. The needle-assisting unit includes a needle feeding assembly and a trigger assembly. The needle feeding assembly includes a movable needle seat 3. The trigger assembly includes a rotating member 4. The rotating member 4 is located on the peripheral side of the movable needle seat 3. A groove matching the shape of the movable needle seat 3 is provided on the rotating member 4. The movable needle seat 3 slides back and forth in the groove to drive the needle tube assembly on the movable needle seat 3 to move. The needle tube assembly is connected to the medicine storage assembly in the medicine storage unit.

[0039] The rotating member 4 is arranged to cooperate with the movable needle seat 3, and the rotating member 4 is adjusted so that the rotating member 4 rotates under the movable needle seat 3, thereby changing the relative position of the movable needle seat 3 and the rotating member 4. When the groove on the rotating member 4 corresponds to the movable needle seat 3, the movable needle seat 3 is inserted into the rotating member 4 to drive the needle tube assembly to move to realize needle assistance, and the needle tube assembly is connected to the medicine storage assembly to realize medicine delivery. Through the above arrangement, it is only necessary to adjust and drive the rotating member 4 to rotate to realize needle assistance, thereby reducing the operation difficulty and learning cost of the user, and the needle assistance efficiency is high during use, thereby avoiding damage to the equipment or the user caused by misoperation.

[0040] Specifically, the needle-assisting unit and the medicine storage unit are arranged in the same shell 2 to achieve integration, avoiding the separation of the needle-assisting device and the medicine pump body resulting in a larger volume, reducing the overall volume of the needle-assisting device, and facilitating daily carrying by users; at the same time, the above-mentioned arrangement enables the medicine delivery pipeline to be protected by the shell 2, avoiding the external pipeline being easily affected by the environment, resulting in damage affecting normal use.

[0041] Preferably, the bottom of the rotating member 4 is configured as a turntable, which is hooked by a buckle on the base 2 so that the turntable and the rotating member 4 can rotate but cannot move up and down, thereby limiting the position of the rotating member 4.

[0042] In the integrated needle-assisting device of this embodiment, the movable needle seat 3 includes a top plate, and a first limiting mechanism is relatively arranged on both sides of the top plate. A second limiting mechanism matching the first limiting mechanism is relatively arranged inside the rotating member 4, and the sliding of the movable needle seat 3 in the rotating member 4 is achieved through the cooperation of the first limiting mechanism and the second limiting mechanism.

[0043] A second limiting mechanism is set to limit the first limiting mechanism, thereby indirectly realizing the limiting of the movable needle seat 3 by the rotating member 4. When the bottom surface of the first limiting mechanism abuts against the top surface of the second limiting mechanism, the movable needle seat 3 is located above the rotating member 4, and the movable needle seat 3 does not move. When the rotating member 4 rotates to the point where the first limiting mechanism and the second limiting mechanism intersect, the first limiting mechanism and the second limiting mechanism are engaged, and the movable needle seat 3 is inserted into the rotating member 4, driving the needle tube assembly to move to achieve needle assistance.

[0044] Specifically, a spring 24 is arranged between the shell 1 and the movable needle seat 3. When the movable needle seat 3 is located above the rotating member 4, the spring 24 is compressed and contracts. When the first limiting mechanism on the movable needle seat 3 and the second limiting assembly on the rotating member 4 are interlaced, the limiting structure below the movable needle seat 3 is lost, and the elastic force generated by the compression of the spring 24 is released to push the movable needle seat 3 to move into the rotating member 4, thereby realizing needle assistance and mechanically triggering the needle assistance, reducing the patient's fear of holding the needle and the pain of improper force.

[0045] In the integrated needle-assisting device of this embodiment, the first limiting mechanism includes a limiting block 5, one side of which is set as a first inclined surface, and the second limiting mechanism includes a stopper 6, which is provided with a second inclined surface matching the first inclined surface, and a receiving groove matching the shape of the limiting block 5 is formed between the stoppers 6.

[0046] By setting a first inclined surface and a second inclined surface, the rotational movement of the rotating part 4 is converted into an upward movement of the moving needle seat 3 through the cooperation of the two inclined wedge surfaces. When the rotating part 4 is rotated to the point where the groove corresponds to the moving needle seat 3, the moving needle seat 3 slides into the rotating part 4, driving the needle tube assembly to move for needle assistance. The first inclined surface fits with the second inclined surface. After needle assistance is completed, the rotating part 4 continues to be rotated to drive the stopper 6 to rotate. The second inclined surface cooperates with the first inclined surface. The stopper 6 applies a vertical force to the limit block 5 through the second inclined surface, pushing the limit block 5 to move upward and slide out of the rotating part 4, thereby achieving needle retraction. The above-mentioned setting realizes the resetting action after needle assistance, and the operation is simple.

[0047] Specifically, Figure 4 and Figure 5 As shown, the limit block 5 is in an arc shape, and the two sides of the limit block 5 along the arc direction are respectively set as a vertical surface and a first inclined surface, and the first inclined surface of one limit block 5 extends to the vertical surface of another limit block 5 and is perpendicular to the vertical surface; Figure 6 and Figure 7As shown, the stopper 6 is in an arc shape as a whole, and the top surface of the stopper 6 includes a supporting portion and a fitting portion connected to each other. The supporting portion is arranged as a plane, and is against the bottom surface of the limit block 5 to support the limit block 5. The fitting portion is inclined to form a second inclined surface, and the inclination angle of the second inclined surface is the same as that of the first inclined surface, so as to ensure the degree of fit when the moving needle seat 3 slides into the rotating member 4, thereby smoothly pushing the moving needle seat 3 to slide out of the rotating member 4 to achieve reset.

[0048] Preferably, the side edge of the top plate is arranged to have the same inclined structure as the first inclined surface, and the inclined structure fits with the second inclined surface to further improve the fit.

[0049] In the integrated needle-assisting device of this embodiment, the needle tube assembly includes a liquid delivery mechanism and a retention mechanism. The liquid delivery mechanism includes a first needle 7 fixed on the movable needle seat 3. The retention mechanism is sleeved on the periphery of the first needle 7 and is slidably connected to the first needle 7. A clamping mechanism matching the retention mechanism is provided on the peripheral side of the retention mechanism, and the clamping mechanism is installed on the base 2.

[0050] Through the above structure, the movable needle seat 3 slides downward into the rotating member 4, driving the first needle 7 and the retention mechanism to move, and the retention mechanism is clamped into the clamping mechanism on the base 2 to fix the position, thereby achieving a retention effect. When the movable needle seat 3 slides upward out of the rotating member 4, it drives the first needle 7 and the retention mechanism to slide relative to each other to increase the length of the liquid delivery tube, and delivers the medicine through the retention mechanism.

[0051] In the integrated needle-assisting device of this embodiment, the retention mechanism includes a retention catheter 8 and a retention catheter seat 9, the retention catheter 8 is fixed on the retention catheter seat 9 and is sleeved on the periphery of the first needle 7, the retention catheter seat 9 is provided with a clamping block 10, and the clamping mechanism includes a fixing platform 11 fixed on the base 2, and the fixing platform 11 is provided with a clamping groove matching the clamping block 10.

[0052] Specifically, the indwelling catheter seat 9 is in a truncated cone shape, and the clamping block 10 is arranged below the indwelling catheter seat 9 and two of them are arranged relatively. A receiving groove matching the shape of the indwelling catheter seat 9 is opened on the top of the fixing platform 11, and the clamping groove is arranged below the receiving groove. A protrusion is arranged between the clamping groove and the receiving groove to clamp and limit the clamping block 10; through the above arrangement, when the moving needle seat 3 drives the indwelling mechanism to move, the clamping block 10 is blocked by the protrusion and shrinks inwardly, so as to be clamped into the clamping groove to fix the indwelling mechanism. Two clamping blocks 10 are arranged so that the clamping blocks 10 have enough space to shrink and realize clamping.

[0053] In the integrated needle-assisting device of this embodiment, the liquid delivery mechanism also includes a second needle 12 and a catheter 13, the drug storage assembly includes a drug storage container, the second needle 12 is inserted into the movable needle seat 3, the second needle 12 is respectively connected to the first needle 7 and the catheter 13, the catheter 13 is connected to the drug storage container through a third needle 14, and the catheter 13 is installed in a catheter direction groove opened on the base 2.

[0054] The above-mentioned arrangement realizes the transportation of the drug solution from the drug reservoir to the first needle 7, and a catheter direction groove is provided to limit the catheter 13 to prevent the catheter 13 from moving in the shell 1 and causing the pipeline to be bent, affecting the infusion; the second needle 12 is inserted into the moving needle seat 3 from the side where the limit block 5 is provided on the moving needle seat 3 to prevent the setting of the second needle 12 from affecting the fitting effect of the first inclined surface and the second inclined surface; preferably, the catheter 13 uses a hose to facilitate the end connected to the second needle 12 to move up and down smoothly with the moving needle seat 3.

[0055] Further preferably, an avoidance groove is provided on the rotating part 4, and the avoidance groove corresponds to the position of the second needle 12. When the movable needle seat 3 slides into the rotating part 4, the second needle 12 slides into the avoidance groove to avoid interference and damage to the second needle 12. The above arrangement reduces the overall height of the movable needle seat 3, thereby reducing the volume of the needle-assisting device and improving portability; one side of the avoidance groove is inclined, and the inclination angle is the same as the inclination angle of the first inclined surface, to ensure that when the needle is retracted, the rotating part 4 is rotated to allow the second needle 12 to slide out along the avoidance groove.

[0056] In the integrated needle-assisting device of this embodiment, the needle-assisting unit also includes a guide assembly, which includes a guide column 15 and a guide groove 16. A guide shell 17 is provided on the outer shell 1, and the movable needle seat 3 is slidably connected in the guide shell 17. The guide column 15 is provided in the guide shell 17, and the guide groove 16 is provided on the fixed platform 11 on the base 2. The guide column 15 and the guide groove 16 are respectively located on the inner side and the outer side of the movable needle seat 3.

[0057] A guide assembly is provided to guide the movable needle seat 3, so as to ensure that the movable needle seat 3 can slide back and forth smoothly in the housing 1, and assist and close the needle. The shape of the guide shell 17 matches the movable needle seat 3, and a sleeve matching the cylindrical block on the top of the movable needle seat 3 is provided at the center of the guide shell 17. A plurality of guide posts 15 protruding toward the center are provided on the inner wall of the guide shell 17, corresponding to the position of the guide groove 16 on the outer side of the limit block 5 of the movable needle seat 3, so as to avoid the movable needle seat 3 from rotating in the guide shell 17 due to friction when the rotating member 4 is rotated; a fixed platform 11 and a guide groove 16 on the outer side of the fixed platform 11 are provided, so as to cooperate with the guide post 15 on the inner side of the limit block 5 of the movable needle seat 3, so as to guide the movable needle seat 3 when the movable needle seat 3 slides into the rotating member 4, and when the rotating member 4 is rotated to close the needle, the guide post 15 cooperates with the guide groove 16 to avoid driving the movable needle seat 3 to rotate, so as to achieve the change of the height position of the movable needle seat 3 through the cooperation of the inclined surface.

[0058] Specifically, the distance between the guide shell 17 and the fixed platform 11 is less than the height of the limit block 5, ensuring that the movable needle seat 3 cooperates with at least one set of guide mechanisms when sliding up and down, thereby playing an effective guiding role and preventing the movable needle seat 3 from rotating; an opening is set on the side of the guide shell 17, corresponding to the second needle 12, to avoid motion interference of the second needle 12 when the movable needle seat 3 slides in the guide shell 17.

[0059] In the integrated needle-assisting device of this embodiment, the trigger unit also includes a positioning assembly, which includes a ratchet 18 and a pawl 19. The ratchet 18 is arranged on the rotating member 4, and the pawl 19 is rotatably connected to the base 2 and is arranged on the peripheral side of the ratchet 18. When the pawl 19 is engaged with the ratchet 18, the rotating member 4 is clamped and positioned to limit the reverse rotation of the rotating member 4.

[0060] A ratchet 18 and a pawl 19 are provided. When the rotating member 4 rotates, the ratchet 18 is driven to rotate, and the pawl 19 is pushed to rotate and engage with the ratchet 18 , so as to position the rotating member 4 and prevent the rotating member 4 from rotating in the opposite direction.

[0061] Specifically, the pawl 19 is rotatably mounted on the base 2 via a pawl fixing column, the pawl 19 is connected to a tension spring, and the tension spring is mounted on the base 2 via a tension spring fixing column, and limiting columns are arranged on both sides of the end of the pawl 19 .

[0062] In the integrated needle-assisting device of this embodiment, the trigger unit also includes a driving component, which includes a connecting column 20 and a driving block 21. The connecting column 20 is fixed on the rotating member 4, and the connecting column 20 passes through the shell 1 and is slidably connected to the shell 1. The connecting column 20 is clamped on the driving block 21, and the driving block 21 is rotatably connected to the shell 1. The rotating driving block 21 drives the rotating member 4 to rotate in the shell 1 through the connecting column 20.

[0063] Specifically, the driving block 21 is in the shape of a key, and the guide shell 17 protrudes from the outer shell 1 to form a circular boss. The driving block 21 is rotatably connected to the outer side of the boss. The driving block 21 is connected to the rotating member 4 through the connecting column 20 and rotates around the same axis. The driving block 21 rotates around the boss, driving the connecting column 20 and the rotating member 4 to rotate, thereby realizing the up and down sliding of the moving needle seat 3; a transition hole 25 is provided on the outer shell corresponding to the rotation trajectory of the connecting column 20, and the transition hole 25 is arc-shaped. The driving block 21 is set in a key shape, which is convenient for rotating the driving block 21 and adjusting it conveniently, further reducing the difficulty of operation.

[0064] In the integrated needle-assisting device of this embodiment, a silicone pad 22 is provided in the fixed platform 11, and a silicone pad 23 is clamped in the silicone pad 22. A through hole is opened at the bottom of the silicone pad 22. The indwelling catheter 8 moves with the moving needle seat 3 and passes through the silicone pad 22 and the through hole. The silicone pad 23 is clamped on the surrounding side of the indwelling catheter 8.

[0065] A silicone pad 22 and a silicone pad 23 are provided to cushion the movable needle seat 3, thereby increasing stability and preventing vibration caused by collision from causing the needle tube assembly to tilt, thereby affecting use; no hole is opened on the silicone pad 23, but a hole is opened on the silicone pad 22; the first needle 7 and the indwelling catheter 8 pierce the silicone pad 23, and when the needle is assisted, the silicone pad 23 rebounds and holds the first needle 7 and the indwelling catheter 8 tightly, thereby playing a sealing role.

[0066] To facilitate subsequent description and understanding, the needle assisting process can be divided into three states according to the relative position of the movable needle seat 3: initial state - needle assisting state - needle retracting state. The present application will be described below according to the three different states.

[0067] Initial state: Figure 2 , Figure 3 , Figure 10-12 The spring 24 is located between the housing 1 and the movable needle seat 3, the upper surface of the rotating member 4 is against the lower surface of the movable needle seat 3, so that the spring 24 is fully compressed and stored, and the indwelling catheter 8 is installed in the indwelling catheter seat 9, and the upper surface of the indwelling catheter seat 9 is against the movable needle seat 3.

[0068] Needle assist status: Fig.13 , Fig.14The user drives the rotating member 4 to rotate by rotating the driving block 21. After rotating 60° counterclockwise, the upper surface of the rotating member 4 no longer presses against the lower surface of the moving needle seat 3, and the spring 24 releases the stored force to push the moving needle seat 3 to move vertically downward. The moving needle seat 3 drives the first needle 7 and the indwelling catheter 8 to insert into the skin, and the indwelling catheter seat 9 is stuck in the fixed platform 11 of the base 2 to complete the needle assistance. During the falling process of the moving needle seat 3, the guide column 15 of the guide shell 17 cooperates with the guide groove 16 on the moving needle seat 3 to prevent it from rotating. At this time, along the front side of the rotation direction, the ratchet 18 on the rotating member 4 just contacts with the pawl 19, preparing for the subsequent needle collection.

[0069] Needle closing state: Fig.15 , Fig.16 , the user continues to rotate the driving block 21 90° to complete the needle retraction. During the rotation process, the ratchet 18 on the rotating member 4 will toggle the pawl 19 installed on the base 2 every time it rotates 7.5°. The pawl 19 returns to its original position under the action of the tension spring, and the ratchet 18 is clamped to prevent the rotating member 4 from reversing; at the same time, during the rotation process, the second inclined surface on the rotating member 4 will squeeze the first inclined surface of the moving needle seat 3 to make the moving needle seat 3 move upward until the moving needle seat 3 is completely lifted, and the lower surface of the moving needle seat 3 is again against the upper surface of the rotating member 4; the guide column 15 on the moving needle seat 3 cooperates with the guide groove 16 on the base 2 to prevent it from being unable to move upward, and the first needle 7 is lifted together with the moving needle seat 3, but because the indwelling catheter 8 is installed in the indwelling catheter seat 9 and the indwelling catheter seat 9 is stuck in the fixing platform 11, the indwelling catheter 8 cannot move and is retained in the user's skin.

[0070] Preferably, the length of the first needle 7 is greater than the distance between the bottom of the movable needle seat 3 and the base 2 in the initial state, to ensure that after the first needle 7 is retracted, the first needle 7 does not completely detach from the indwelling catheter 8, and its front end portion remains in the indwelling catheter 8, replacing the pipeline to transport liquid medicine. The liquid medicine in the medicine reservoir flows into the patient's body through the third needle 14, the catheter 13, the second needle 12, the first needle 7, and the indwelling catheter 8.

[0071] Preferably, after the needle is retracted, the 12 ratchet teeth 18 on the rotating member 4 have passed the pawl 19, and the last ratchet tooth 18 is in contact and engaged with the pawl 19. At the same time, the connecting column 20 reaches the tail end of the transition hole 25 on the housing 1. At this time, the rotating member 4 is locked and cannot rotate anymore, thereby ensuring the stable retention of the indwelling catheter 8 and achieving smooth drug delivery.

[0072] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "rotation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0073] Although the embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated needle-assisting device, characterized in that: It includes a needle-assisting unit and a medicine storage unit. The needle-assisting unit includes a needle-feeding assembly and a trigger assembly. The needle-feeding assembly includes a movable needle seat. The trigger assembly includes a rotating part. The rotating part is located on the peripheral side of the movable needle seat. A groove matching the shape of the movable needle seat is provided on the rotating part. The movable needle seat slides back and forth in the groove to drive the needle tube assembly on the movable needle seat to move. The needle tube assembly is connected to the medicine storage assembly in the medicine storage unit.

2. The integrated needle-assisting device according to claim 1, characterized in that: The movable needle seat includes a top plate, and first limiting mechanisms are relatively arranged on both sides of the top plate. Second limiting mechanisms matching the first limiting mechanisms are relatively arranged on both sides of the interior of the rotating member. The sliding of the movable needle seat in the rotating member is achieved by the cooperation of the first limiting mechanism and the second limiting mechanism.

3. The integrated needle-assisting device according to claim 2, characterized in that: The first limiting mechanism includes a limiting block, one side of which is set as a first inclined surface, and the second limiting mechanism includes a stopper, which is provided with a second inclined surface matching the first inclined surface, and a receiving groove matching the shape of the limiting block is formed between the stoppers.

4. The integrated needle-assisting device according to claim 1, characterized in that: The needle tube assembly includes a liquid delivery mechanism and a retention mechanism. The liquid delivery mechanism includes a first needle fixed on a movable needle seat. The retention mechanism is sleeved on the periphery of the first needle and slidably connected to the first needle. A clamping mechanism matching the retention mechanism is provided on the peripheral side of the retention mechanism, and the clamping mechanism is installed on the base.

5. The integrated needle-assisting device according to claim 4, characterized in that: The indwelling mechanism includes an indwelling catheter and an indwelling catheter seat, the indwelling catheter is fixed on the indwelling catheter seat and is sleeved on the periphery of the first needle, the indwelling catheter seat is provided with a clamping block, and the clamping mechanism includes a fixing platform fixed on the base, and the fixing platform is provided with a clamping groove matching the clamping block.

6. The integrated needle-assisting device according to claim 4, characterized in that: The liquid delivery mechanism also includes a second needle and a catheter, the drug storage assembly includes a drug storage container, the second needle is inserted into the movable needle seat, the second needle is respectively connected to the first needle and the catheter, the catheter is connected to the drug storage container through a third needle, and the catheter is installed in a catheter direction groove opened on the base.

7. The integrated needle-assisting device according to claim 1, characterized in that: The needle-assisting unit also includes a guide assembly, which includes a guide shell, a guide column and a guide groove. The guide shell is arranged on the outer shell, and the movable needle seat is slidably connected in the guide shell. The guide column is arranged in the guide shell, and the guide groove is arranged on the fixed platform. The guide column and the guide groove are respectively located on the inner side and the outer side of the movable needle seat.

8. The integrated needle-assisting device according to claim 1, characterized in that: The trigger unit also includes a positioning assembly, which includes a ratchet and a pawl. The ratchet is arranged on the rotating member, and the pawl is rotatably connected to the base and is arranged on the peripheral side of the ratchet. When the pawl is engaged with the ratchet, the rotating member is clamped and positioned to limit the reverse rotation of the rotating member.

9. The integrated needle-assisting device according to claim 1, characterized in that: The trigger unit also includes a driving assembly, which includes a connecting column and a driving block. The connecting column is fixed on the rotating member, the connecting column passes through the shell and is slidably connected to the shell, the connecting column is clamped on the driving block, the driving block is rotatably connected to the shell, and the rotating driving block drives the rotating member to rotate in the shell through the connecting column.

10. The integrated needle-assisting device according to claim 5, characterized in that: A silicone pad is arranged in the fixing platform, a silicone pad is clamped in the silicone pad, a through hole is opened at the bottom of the silicone pad, the indwelling catheter moves with the moving needle seat and passes through the silicone pad and the through hole, and the silicone pad is clamped on the peripheral side of the indwelling catheter.

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