Insulin injection needle capable of automatically withdrawing needle head

Abstract

The utility model belongs to the field of insulin injection pens, and particularly relates to an insulin injection needle capable of automatically withdrawing a needle head, which comprises an injection pen, the injection pen is provided with an insertion opening, an insertion groove, a movable groove and an adjusting cavity, the adjusting cavity is provided with a traction cavity, the adjusting cavity is provided with a push rod, and the push rod is provided with a push block. According to the insulin injection needle capable of automatically withdrawing the needle head, the arc block is assembled on the push rod, the fixed block is assembled on the push rod, the telescopic spring is assembled on the push rod, and the clamping rod is assembled on the push rod. And meanwhile, the needle head is very thin, and a screw cap on the needle head is not easy to exert force when being twisted, so that the needle head is easy to prick a hand, and the use safety is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to insulin injection pen field, specifically is a kind of insulin injection needle of automatic needle retraction. BACKGROUND

[0002] Insulin injection pen is a kind of insulin injection and injector two-in-one device, specially designed disposable needle superfine ultra-short, pain is very light, it is convenient to use and carry, can be quickly and accurately completed injection process at any time and place, it is divided into replaceable pen refill insulin injection pen and non-replaceable pen refill insulin special filling injection pen.The replaceable pen refill insulin injection pen can be reused, but the pen refill needs to be replaced once used up;Insulin special filling injection pen is a kind of disposable injection device with pre-set insulin pen refill, without replacing pen refill, discard after use.

[0003] But the existing insulin injection pen still has the following problems in the process of using:

[0004] The needle head of the existing insulin injection needle is connected with the needle cylinder by screw thread structure, and it needs to be twisted for half a day when disassembling the needle head after injection, which causes disassembly inconvenience, and the needle head is very thin, and it is not easy to exert force when twisting the cap on the needle head, so the needle head is easy to be pricked into hand, affecting use safety, so it is necessary to provide a kind of insulin injection needle with automatic needle retraction for the existing insulin injection field. UTILITY MODEL CONTENT

[0005] In order to make up for the deficiencies of the prior art, the needle head of the existing insulin injection needle is connected with the needle cylinder by screw thread structure, and it needs to be twisted for half a day when disassembling the needle head after injection, which causes disassembly inconvenience, and the needle head is very thin, and it is not easy to exert force when twisting the cap on the needle head, so the needle head is easy to be pricked into hand, affecting use safety, so the utility model provides a kind of insulin injection needle with automatic needle retraction.

[0006] The utility model solves the technical scheme that it adopts: a kind of insulin injection needle with automatic needle retraction, including injection pen, the one end of injection pen is provided with spigot, the one end of injection pen is provided with multiple insertion slot, insertion slot is located the outside of spigot, the surface of injection pen is provided with movable slot, the inside of injection pen is provided with multiple adjusting cavities, adjusting cavity is located between insertion slot and movable slot, the one end of adjusting cavity is provided with traction cavity, traction cavity is located the side of insertion slot, the movable assembly of push rod is all equipped on adjusting cavity, the one end of push rod is all fixedly equipped with push block, the other end of push rod is all fixedly equipped with arc block, arc block is located the side of injection pen, the fixed assembly of fixed block is all equipped on push rod, the stretchable spring of push rod is all equipped, the both ends of stretchable spring are respectively fixedly equipped with fixed block and the inner wall of adjusting cavity, the fixed assembly of clamping rod is all equipped on push block, clamping rod movable penetrates into insertion slot.

[0007] As preferred, the inner wall bottom surface of the movable slot is fixedly provided with a plurality of mounting pipes, one end of each of the mounting pipes is movably provided with a movable rod, one end of the movable rod moves inside the mounting pipe, the top of the plurality of movable rods is fixedly provided with a movable ring, the mounting pipe and the movable rod are provided with an elastic spring, and two ends of the elastic spring are fixedly provided with the movable ring and the bottom surface of the movable slot.

[0008] As preferred, the movable ring is fixedly provided with a plurality of extension rods, one end of each of the extension rods is fixedly provided with a connecting rod, one end of each of the connecting rods is fixedly provided with an operating block, one end of each of the operating blocks is provided with a curved surface, and the side surface and the curved surface of the operating block are sequentially and respectively attached to the arc block.

[0009] As preferred, the top surface of the movable slot is provided with a traction groove, the surface of the injection pen is provided with a moving groove, the moving groove is communicated with the traction groove, the movable ring is fixedly provided with a mounting block, the mounting block is movably provided with the traction groove, the mounting block is fixedly provided with a pushing block, and the pushing block is movably provided with the moving groove.

[0010] As preferred, the movable slot of the injection pen is inserted with a plug, the plug is fixedly provided with an assembling block, the assembling block is attached to one end of the injection pen, the assembling block is fixedly provided with an injection needle, the assembling block is fixedly provided with a plurality of clamping blocks, each of the clamping blocks is provided with a clamping hole, each of the clamping blocks is located outside the plug, the clamping block is inserted into the plug, and the clamping rod is inserted into the clamping hole of the clamping block.

[0011] As preferred, the injection pen is clamped with a pen cap, and the assembling block and the injection needle are located inside the pen cap.

[0012] The utility model discloses the beneficial effect lies in:

[0013] The utility model discloses through pushing the pushing block, make the pushing block on the moving groove drive mounting block move on the traction groove, and the mounting block drive movable ring moves on the movable slot, make the movable rod one end all moves inside the mounting pipe, and the movable rod contracts, and the movable ring drive the connecting rod on the extension rod moves, and the connecting rod drive operating block moves, make the curved surface and the side surface of operating block sequentially and respectively with arc block attach, and the arc block is stressed, and the push rod drive push block moves, and the telescopic spring stretches, and the push block drive clamping rod is far away from the plug, and through the clamping block corresponding with the plug is inserted, when loosening the pushing block, under the elasticity, make the clamping rod corresponding with the clamping hole of the clamping block is inserted, increase the stability between the injection pen and the injection needle on the assembling block, and the dismounting effect is improved, and the pen cap is clamped with the injection pen, and the assembling block and the injection needle are located inside the pen cap, and the carrying is convenient. DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below only show some of the embodiments of the present application, and are 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 are within the scope of protection of the present application.

[0015] Figure 1 The insulin injection needle structure schematic diagram of the automatic needle head retraction of the present application;

[0016] Figure 2 The cross-sectional structure schematic diagram of the insulin injection needle of the automatic needle head retraction of the present application;

[0017] Figure 3 The cross-sectional structure schematic diagram of the insulin injection needle of the present application;

[0018] Figure 4 The cross-sectional structure schematic diagram of the automatic needle head retraction of the present application.

[0019] In the drawings:

[0020] 10, injection pen; 11, socket; 12, slot; 13, movable slot;

[0021] 20, assembly block; 21, injection needle head; 22, pen cap; 23, insertion block;

[0022] 30, clamping block; 31, clamping hole; 32, adjusting cavity; 33, traction cavity;

[0023] 40, push rod; 41, push block; 42, arc block; 43, fixed block;

[0024] 50, telescopic spring; 51, clamping rod; 52, mounting tube; 53, movable rod;

[0025] 60, movable ring; 61, elastic spring; 62, extension rod; 63, connecting rod;

[0026] 70, operation block; 71, traction slot; 72, moving slot; 73, mounting block;

[0027] 80, actuating block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and are 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 are within the scope of protection of the present application.

[0029] The following detailed description of the application will be made in connection with the drawings described below Figure 1 —4 to make further detailed description of the present application,

[0030] Embodiments of the present application disclose an insulin injection needle capable of automatically retracting a needle head. Referring to Figure 1 and Figure 2 and Figure 4An insulin injection needle with automatic needle withdrawal includes an injection pen 10. One end of the injection pen 10 has a socket 11, and the other end has multiple slots 12 located outside the socket 11. The surface of the injection pen 10 has a movable groove 13. The interior of the injection pen 10 has multiple adjustment chambers 32 located between the slots 12 and the movable grooves 13. Each adjustment chamber 32 has a traction chamber 33 at one end, located on one side of the slot 12. Each adjustment chamber 32 is movably fitted with a push rod 40. One end of each push rod 40 is fixedly fitted with a push block 41, and the other end of each push rod 40 is fixedly fitted with an arc block 42 located on the injection pen. On one side of 10, a fixing block 43 is fixedly mounted on each push rod 40. A telescopic spring 50 is fixedly mounted between the fixing block 43 and the inner wall of the adjusting cavity 32. Each push rod 40 is mounted inside the telescopic spring 50. Each push block 41 is fixedly mounted with a locking rod 51, which movably passes through the slot 12. Multiple mounting tubes 52 are fixedly mounted on the bottom surface of the inner wall of the movable groove 13. A movable rod 53 is movably mounted on one end of each mounting tube 52. One end of the movable rod 53 moves inside the mounting tube 52. A movable ring 60 is fixedly mounted on the top of each movable rod 53. A spring spring 61 is fixedly mounted between the movable ring 60 and the bottom surface of the movable groove 13. The mounting tubes 52 The movable rod 53 is assembled inside the elastic spring 61. Multiple extension rods 62 are fixedly mounted on the movable ring 60. A connecting rod 63 is fixedly mounted to one end of each extension rod 62. An operating block 70 is fixedly mounted to one end of each connecting rod 63. One end of each operating block 70 has an arc surface. The side and arc surface of the operating block 70 sequentially abut against the arc block 42. A traction groove 71 is provided on the top surface of the movable groove 13. A moving groove 72 communicating with the traction groove 71 is provided on the surface of the injection pen 10. A mounting block 73 that moves within the traction groove 71 is fixedly mounted on the movable ring 60. A toggle block 80 that moves within the moving groove 72 is fixedly mounted on the mounting block 73. Pushing the actuating block 80 causes the actuating block 80 on the moving slot 72 to move the mounting block 73 on the traction slot 71. The mounting block 73 causes the movable ring 60 to move on the moving slot 13, causing one end of the movable rod 53 to move inside the mounting tube 52. The movable rod 53 retracts, and the movable ring 60 causes the connecting rod 63 on the extension rod 62 to move. The connecting rod 63 causes the operating block 70 to move, so that the arc surface and side surface on the operating block 70 successively fit with the arc block 42. The arc block 42 is subjected to force, and the push rod 40 causes the push block 41 to move. The telescopic spring 50 is stretched, and the push block 41 causes the locking rod 51 to move away from the slot 12.

[0031] Reference Figure 1 - Figure 3The movable slot 13 on the injection pen 10 is inserted with the insertion block 23, the insertion block 23 is fixedly assembled with the assembling block 20, the assembling block 20 is attached to one end of the injection pen 10, the assembling block 20 is fixedly assembled with the injection needle 21, the assembling block 20 is fixedly assembled with a plurality of clamping blocks 30, the clamping blocks 30 are all provided with clamping holes 31, the clamping blocks 30 are all located outside the insertion block 23, the clamping blocks 30 are inserted into the insertion slot 12 in correspondence, the clamping rod 51 is inserted into the clamping holes 31 on the clamping blocks 30 in correspondence, the pen cap 22 is clamped on the injection pen 10, the assembling block 20 and the injection needle 21 are both located inside the pen cap 22, the clamping blocks 30 are inserted into the insertion slot 12 in correspondence, at this time, the clamping rod 51 is inserted into the clamping holes 31 on the clamping blocks 30 in correspondence, the stability between the injection pen 10 and the injection needle 21 on the assembling block 20 is increased, the pen cap 22 is clamped on the injection pen 10, the assembling block 20 and the injection needle 21 are both located inside the pen cap 22, and the pen cap 22 is convenient to carry.

[0032] Working principle: push the driving block 80, so that the driving block 80 drives the mounting block 73 to move on the traction groove 71, the mounting block 73 drives the movable ring 60 to move on the movable slot 13, one end of the movable rod 53 is moved in the inside of the mounting pipe 52, the movable rod 53 is contracted, the movable ring 60 drives the connecting rod 63 on the extension rod 62 to move, the connecting rod 63 drives the operation block 70 to move, so that the arc surface and the side surface on the operation block 70 are attached to the arc block 42 in turn, the arc block 42 is stressed, the push rod 40 drives the push block 41 to move, the extension spring 50 is stretched, the push block 41 drives the clamping rod 51 to move away from the insertion slot 12, the clamping blocks 30 are inserted into the insertion slot 12 in correspondence, at this time, the driving block 80 is loosened, under the action of the elastic force, the clamping rod 51 is inserted into the clamping holes 31 on the clamping blocks 30 in correspondence, the stability between the injection pen 10 and the injection needle 21 on the assembling block 20 is increased, the injection pen 10 is convenient to disassemble and assemble, the disassembly and assembly effect is improved, the pen cap 22 is clamped on the injection pen 10, the assembling block 20 and the injection needle 21 are both located inside the pen cap 22, and the pen cap 22 is convenient to carry.

[0033] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. An insulin injection needle that automatically retracts the needle tip, characterized by: The utility model provides an injection pen (10) is provided with the socket (11) one end, and the injection pen (10) is provided with a plurality of slots (12) one end, and the slot (12) is located the outside of socket (11), and the surface of injection pen (10) is provided with the movable slot (13), and the inside of injection pen (10) is provided with a plurality of adjusting cavities (32), and the adjusting cavity (32) is located between the slot (12) and movable slot (13), and the one end of adjusting cavity (32) is provided with the traction cavity (33) all, and the traction cavity (33) is located the one side of slot (12), and the push rod (40) of movable assembly is all equipped on adjusting cavity (32), and the one end of push rod (40) is all fixedly assembled with push block (41), and the other end of push rod (40) is all fixedly assembled with arc block (42), and arc block (42) is located the one side of injection pen (10), and the fixed block (43) of fixed assembly is all equipped on push rod (40), and the retractable spring (50) is all equipped on push rod (40), and the both ends of retractable spring (50) are fixedly assembled with fixed block (43) and the inner wall of adjusting cavity (32) respectively, and the clamping rod (51) of fixed assembly is all equipped on push block (41), and clamping rod (51) movable penetrates into slot (12).

2. An automatic needle retraction insulin injection needle according to claim 1, wherein: The inner wall bottom surface of movable slot (13) is fixedly assembled with a plurality of installation tubes (52), one end of installation tube (52) is movably assembled with movable rod (53), one end of movable rod (53) moves in the inside of installation tube (52), the top of a plurality of movable rods (53) is fixedly assembled with movable ring (60), installation tube (52) and movable rod (53) are equipped with elastic spring (61), and the both ends of elastic spring (61) are fixedly assembled with movable ring (60) and the bottom surface of movable slot (13) respectively.

3. An automatic needle retraction insulin injection needle according to claim 2, wherein: The movable ring (60) is fixedly assembled with a plurality of extension rods (62), one end of extension rod (62) is fixedly assembled with connecting rod (63), one end of connecting rod (63) is fixedly assembled with operating block (70), one end of operating block (70) is provided with arc surface, and the side surface and arc surface of operating block (70) are sequentially and respectively attached to arc block (42).

4. An automatic needle retraction insulin injection needle according to claim 3, wherein: The top surface of movable slot (13) is provided with traction groove (71), the surface of injection pen (10) is provided with moving groove (72), moving groove (72) communicates with traction groove (71), movable ring (60) is fixedly assembled with mounting block (73), mounting block (73) is movably assembled with traction groove (71), mounting block (73) is fixedly assembled with knob (80), and knob (80) is movably assembled with moving groove (72).

5. The automatic needle retraction insulin injection needle of claim 1, wherein: The movable slot (13) on the injection pen (10) is inserted with an insertion block (23), the insertion block (23) is fixedly provided with an assembly block (20), the assembly block (20) is attached to one end of the injection pen (10), the assembly block (20) is fixedly provided with an injection needle (21), the assembly block (20) is fixedly provided with a plurality of clamping blocks (30), the clamping blocks (30) are all provided with clamping holes (31), the clamping blocks (30) are all located on the outer side of the insertion block (23), the clamping blocks (30) are correspondingly inserted with the insertion slot (12), and the clamping rods (51) are correspondingly inserted with the clamping holes (31) on the clamping blocks (30).

6. An automatic needle retraction insulin injection needle according to claim 5, wherein: The injection pen (10) is clamped with a pen cap (22), and the assembly block (20) and the injection needle (21) are both located on the inner side of the pen cap (22).

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