CN113663173A

CN113663173A - Painless insulin needle

Info

Publication number: CN113663173A
Application number: CN202110906301.0A
Authority: CN
Inventors: 孙洪荣; 郑枫
Original assignee: Shanghai Ace Medical Technology Co ltd
Current assignee: Shanghai Ace Medical Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-11-19
Anticipated expiration: 2041-08-09
Also published as: CN113663173B

Abstract

The invention belongs to the technical field of medical treatment, and discloses an painless insulin needle which comprises a holding rod, a push rod, a liquid storage tube and a needle seat, wherein a limiting cylinder is arranged inside the holding rod, a clamping plate is movably sleeved on the inner wall of the limiting cylinder, a limiting plate is fixedly arranged on the outer surface of the clamping plate, a connecting spring is fixedly connected to the top of the clamping plate, a driving ring is movably sleeved on the inner wall of the holding rod, an aligning groove is formed in the top of the driving ring, and a supporting mechanism is arranged at the bottom of the driving ring. According to the invention, the limiting plate and the driving ring are arranged, so that the limiting plate can be limited by extruding and deforming the driving ring and then enters the limiting groove, and the limiting plate is limited in the limiting groove while continuous injection is carried out, so that the clamping plate and the push rod are kept in the original position, therefore, a novice patient does not need to press the push rod constantly during injection, the injection of insulin is more stable, and the problem of insufficient insulin injection caused by hand loosening is avoided.

Description

Painless insulin needle

Technical Field

The invention belongs to the technical field of medical treatment, and particularly relates to a painless insulin needle.

Background

The insulin needle refers to an insulin syringe, which pushes insulin with a specified volume into the epithelial tissue of a human body in the form of injection to relieve the problem of high blood sugar of a diabetic patient.

At present, the diabetes mellitus patient is when using the insulin needle, can advance the insulin with the needle in the epithelial tissue then press the push rod that is located the insulin needle top and impel internally with insulin, to some new hands, can produce the mood of some nervous fear when using the insulin needle, and insulin needs the patient to continuously press the push rod about 10 seconds when injecting, because the push rod can install the spring because the reason of needs used repeatedly resets so that use next time admittedly, new hand this moment hand can produce the condition of becoming flexible, make the injection stable inadequately, cause the problem that the insulin injection quantity is not enough easily.

Before injecting insulin, need be perpendicular up with the syringe needle usually, play several stock solution chambeies down, then go up little stroke and press the push rod, go the air discharge of stock solution intracavity portion, because lack spacing measure, some novice often push out the insulin too much owing to lack the spacing and the feedback of debilitation when operating, cause the insulin extravagant.

The insulin needle is mostly disposable, therefore, some patients can mount the needle in the front of the insulin needle in advance, which causes a problem: the needle head is exposed to the outside and is easy to collide and damage; although the protective cover is usually additionally arranged at the front end of the needle head in the prior art, the protective cover is very troublesome to fix and has poor protective effect, and the protective cover is generally made of plastic and can be extruded and deformed when colliding, extruding or impacting, so that the needle head inside the protective cover is damaged.

Disclosure of Invention

The present invention is directed to provide a painless insulin needle to solve the above problems of the background art.

In order to achieve the above purpose, the invention provides the following technical scheme: a painless insulin needle comprises a holding rod, a push rod, a liquid storage tube and a needle seat, wherein a limiting cylinder is arranged inside the holding rod, a clamping plate is movably sleeved on the inner wall of the limiting cylinder, a limiting plate is fixedly arranged on the outer surface of the clamping plate, a connecting spring is fixedly connected to the top of the clamping plate, a driving ring is movably sleeved on the inner wall of the holding rod, an aligning groove is formed in the top of the driving ring, a supporting mechanism is arranged at the bottom of the driving ring, a rotating mechanism is fixedly arranged on the outer surface of the driving ring, a patient can drive the clamping plate and the limiting plate to move downwards while pressing the push rod to drive the connecting spring to stretch the connecting spring, on one hand, when insulin injection is carried out, the connecting spring which is continuously stretched provides upward reaction force for the clamping plate and the push rod, so that the hand of the patient receives upward reaction force, the limiting plate is driven to extrude the driving ring and deform the driving ring to be clamped into the limiting groove, the limiting plate is limited by the limiting groove, the clamping plate and the push rod can continue to inject the insulin without the need of manually pressing the push rod by the patient, so that labor is saved for a novice patient, and the design mainly aims at the novice patient; on the other hand, when carrying out the inside air escape operation of stock solution pipe, the top of push rod is perpendicular downward, then with the top of a bullet stock solution pipe for air among the stock solution pipe rebound, later upwards promote the push rod, when the push rod removed, connecting spring continuously carried out application of reaction force, made the patient receive certain limiting displacement when pushing away the push rod.

Preferably, the bottom of the holding rod is provided with a clamping groove, the inside of the clamping groove is movably clamped with a connecting ring, the bottom end of the connecting ring is fixedly connected with a liquid storage tube, the top of the liquid storage tube is hermetically sleeved with a sealing block, the push rod is movably sleeved inside a limiting cylinder, the inner wall of the limiting cylinder is provided with a moving groove, the inner wall of the clamping plate is fixedly connected with the outer surface of the push rod, the middle part of the driving ring is provided with a limiting groove, the supporting mechanism is movably sleeved on the inner wall of the holding rod and positioned at the bottom of the driving ring, the left side of the outer surface of the holding rod is provided with a resetting groove, the rear end of the resetting groove is provided with a spring groove, the rotating mechanism is positioned in the resetting groove and the spring groove, the other end of the connecting spring is fixedly connected with the holding rod, the bottom of the push rod is tightly attached to the top of the sealing block in an initial state, and sufficient transmission capacity is ensured by tight attachment to the sealing block when insulin injection is carried out, the push rod will drive cardboard and limiting plate downstream and tensile coupling spring, and the push rod after will finishing moving through the spacing groove is spacing, prevents that the push rod from leading to injection mechanism to extract internally because of reseing, causes the injection failure.

Preferably, the needle file is located the bottom of liquid storage tube, the inside fixed mounting stand pipe of needle file, the surface activity of needle file has cup jointed the outer protective housing, the inside activity of outer protective housing has cup jointed the injection head, and the injection head cup joints the surface at the needle file through nested form to for the injection head provides the protection, thereby prevent to cause the injection head to take place the damage because of colliding with, and the sealed effect of liquid storage tube has been realized to injection head cooperation needle file and stand pipe.

Preferably, the injection head passes through needle file and stand constitutes the connectivity structure, needle file and liquid storage tube adopt the mode of screw thread to be connected, and stand, injection head and needle file have constituted the connectivity structure to realized can directly pricking human skin and inject with the injection head when the outer protective housing is taken off, realized the rapid injection, and the outer protective housing can accomplish to cup joint rapidly after the injection head injects and reset and provide the protection for the injection head.

Preferably, the rotating mechanism comprises a driving block, a driving rod is fixedly installed at the rear end of the driving block, the other end of the driving rod is movably sleeved in the spring groove, the other end of the driving rod is fixedly connected with a return spring, the other end of the return spring is fixedly connected with the spring groove, after the insulin injection is finished, the push rod drives the clamping plate and the limiting plate to move to the designated position, the limiting plate is clamped in the limiting groove, when the limiting plate, the clamping plate and the push rod need to be reset, the driving block can be buckled by hand and the driving rod is driven to move, so that the driving rod moves in the spring groove and compresses the return spring, because drive piece and drive ring fixed connection, when the drive ring was rotated certain angle, the limiting plate just in time relative from top to bottom with adjusting the groove well, at this moment, the limiting plate alright through adjusting groove rebound well, under the drive of coupling spring with the guard ring shift up together and reset.

Preferably, the supporting mechanism includes lower support ring, the top fixed mounting of lower support ring has the bracing piece, the top fixed mounting of bracing piece has last supporting ring, go up supporting ring's top and drive ring fixed connection, supporting mechanism mainly provides the support for driving the ring, because driving the ring and be the ring structure, it cup joints for the activity on the inner wall of holding rod, needs supporting mechanism to provide the support of removal in-process for it, and simultaneously, can upwards pull the drive ring under the effect of coupling spring and cardboard when the limiting plate card advances the spacing groove, supporting mechanism just makes the drive ring can not be driven the rebound through the joint that self gravity is greater than the cooperation drive piece of coupling spring's tensile force this moment to the stability of driving the ring has been guaranteed.

Preferably, the number of the limiting plates and the number of the alignment grooves are four, the top sizes and the shapes of the limiting plates and the alignment grooves are matched, after the driving ring rotates forty-five degrees, the limiting plate can pass through the alignment groove from top to bottom, the limiting plate is reset after the completion of insulin injection due to the matching of the limiting plate and the alignment groove, so that the push rod can be reused, a patient can drive the driving block to drive the driving rod to move towards the inner part of the spring groove by backward wave, the return spring is compressed, and then the driving ring is driven to rotate, because of the action of the return spring, the maximum value of the rotation angle of the driving block is forty-five degrees, and the angle is just the included angle between the limiting plate and the aligning groove, after the driving ring finishes rotating, the limiting plate can just pass through the aligning groove upwards and move out of the limiting groove, and the driving rod and the driving block drive the driving ring to rotate and reset under the action of the reset spring, so that the next injection preparation is completed.

Preferably, the cross sectional shape of driving ring is the assembly of right trapezoid and L type, the right trapezoid part of driving ring is made by the block rubber, as shown in fig. 2, the limiting plate can contact the right trapezoid part of driving ring at the in-process that moves down at first to extrude driving ring and warp then the limiting plate just can block into the spacing groove, the top of limiting plate will upwards promote the top of spacing groove under the effect of spacing groove, but because the top of spacing groove is flat, make the limiting plate can't extrude deformation to it, thereby spacing the limiting plate in the spacing groove.

Preferably, the clamping plate is a combination of two internally and externally connected rings, the outer ring part of the clamping plate is located on the outer surface of the limiting cylinder, the inner ring part of the clamping plate is located on the inner wall of the limiting cylinder, the two parts connected with the ring parts are movably clamped inside the moving grooves, the moving grooves are two in number and are respectively distributed on the left side and the right side of the outer surface of the limiting cylinder, the clamping plate can keep the stability of the clamping plate to the maximum extent in the up-and-down moving process due to the design of the inner ring and the outer ring of the clamping plate, the clamping plate cannot transmit deflection and rotation due to the arrangement of the moving grooves, and the clamping plate can stably move up and down inside the push rod.

The invention has the following beneficial effects:

1. the invention realizes the function of stable injection by arranging the limiting cylinder, the clamping plate, the limiting plate, the connecting spring, the rotating mechanism and the like, the connecting spring is arranged to apply upward tensile force to the clamping plate which moves downwards under the driving of the push rod, so that the push rod is subjected to larger force when the pushing degree of the push rod is larger, thereby increasing the holding force of the patient to the holding rod and the push rod handle, preventing the holding rod from being held unstably during injection, the limiting plate and the driving ring are arranged, so that the limiting plate can be deformed by extruding the driving ring and then enters the limiting groove, the limiting plate is limited, while continuous injection is carried out, the limit plate is limited in the limit groove, so that the clamp plate and the push rod are kept still in the original position, therefore, a novice patient does not need to press the push rod constantly during injection, the insulin injection is more stable, and the phenomenon that the insulin injection amount is insufficient due to loose hands is avoided.

2. When the push rod upwards promoted sealed piece, make the push rod that reverses through being provided with connecting spring and received the tensile reaction force that comes from connecting spring, along with the removal of push rod and sealed piece, connecting spring is come more and more by tensile degree, make the reaction force that cardboard and push rod received bigger and bigger, the problem of having greatly avoided the novice patient to extrude the insulin in the stock solution pipe too big hard, because the migration distance of push rod is not big, make the limiting plate can not spacing in the spacing groove, just also need not to use slewing mechanism to reset.

3. The injection head is connected with the outer protective shell in a nesting mode, so that the outer protective shell is sleeved and clamped with the needle base before use, nesting of the interior of the needle base and the injection head is facilitated, the needle head can be protected from being damaged, the injection head is effectively protected in an idle state, and the protection performance of the device is effectively improved.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic front view of the structure of the present invention;

FIG. 3 is a schematic view in partial cutaway in elevation of the structure of the present invention;

FIG. 4 is a schematic illustration of the support mechanism, drive ring and rotation mechanism shown separated in accordance with the present invention;

FIG. 5 is a schematic diagram showing the push rod, the snap plate, the limiting plate and the connecting spring of the present invention in a separated state;

FIG. 6 is a schematic sectional top view of the structure of the present invention;

FIG. 7 is a front cut-away schematic view of a reservoir tube, a needle hub, an outer protective shell, a guide tube and an injection head of the present invention;

FIG. 8 is an enlarged view of the structure A shown in FIG. 2 according to the present invention.

In the figure: 1. a holding rod; 2. a push rod; 3. a card slot; 4. a needle seat; 5. a reset groove; 6. driving the block; 7. driving the rod; 8. a sealing block; 9. a liquid storage pipe; 10. a connecting ring; 11. a support mechanism; 111. a lower support ring; 112. a support bar; 113. an upper support ring; 12. a limiting cylinder; 13. a moving groove; 14. clamping a plate; 15. a limiting plate; 16. driving the ring; 17. a limiting groove; 18. aligning the groove; 19. a connecting spring; 20. an outer protective shell; 21. a spring slot; 22. a return spring; 23. a rotating mechanism; 24. a guide tube; 25. an injection head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 8, in the embodiment of the present invention, an insulin needle without pain comprises a holding rod 1, a push rod 2, a liquid storage tube 9 and a needle seat 4, a limiting cylinder 12 is arranged inside the holding rod 1, a clamping plate 14 is movably sleeved on an inner wall of the limiting cylinder 12, a limiting plate 15 is fixedly installed on an outer surface of the clamping plate 14, a connecting spring 19 is fixedly connected to a top of the clamping plate 14, a driving ring 16 is movably sleeved on an inner wall of the holding rod 1, an aligning groove 18 is formed on a top of the driving ring 16, a supporting mechanism 11 is arranged at a bottom of the driving ring 16, a rotating mechanism 23 is fixedly installed on an outer surface of the driving ring 16, a patient can drive the clamping plate 14 and the limiting plate 15 to move downward while pressing the push rod 2, and drive the connecting spring 19 to stretch, on the one hand, when insulin injection is performed, the connecting spring 19 which is continuously stretched provides an upward reaction force for the clamping plate 14 and the push rod 2, the hands of the patient are subjected to upward reaction force, the limiting plate 15 is driven to extrude the driving ring 16, the driving ring 16 is deformed and then clamped into the limiting groove 17, the limiting plate 15 is limited by the limiting groove 17, the clamping plate 14 and the push rod 2 can continue to inject insulin without the need of the patient to manually press the push rod 2, and therefore the patient is labor-saving for a novice patient, and the design is mainly for the novice patient; on the other hand, when carrying out the inside air discharge operation of liquid storage pipe 9, the top of push rod 2 is perpendicular down, then with the top of a bullet liquid storage pipe 9 of hand bullet for air among the liquid storage pipe 9 moves upwards, later upwards promotes push rod 2, and when push rod 2 removed, connecting spring 19 lasted the application of carrying out reaction force, makes the patient receive certain limiting displacement when pushing away push rod 2.

Wherein, the bottom of the holding rod 1 is provided with a clamping groove 3, the inner part of the clamping groove 3 is movably clamped with a connecting ring 10, the bottom end of the connecting ring 10 is fixedly connected with a liquid storage tube 9, the top of the liquid storage tube 9 is hermetically sleeved with a sealing block 8, a push rod 2 is movably sleeved inside a limiting cylinder 12, the inner wall of the limiting cylinder 12 is provided with a moving groove 13, the inner wall of a clamping plate 14 is fixedly connected with the outer surface of the push rod 2, the middle part of a driving ring 16 is provided with a limiting groove 17, a supporting mechanism 11 is movably sleeved on the inner wall of the holding rod 1 and positioned at the bottom of the driving ring 16, the left side of the outer surface of the holding rod 1 is provided with a reset groove 5, the rear end of the reset groove 5 is provided with a spring groove 21, a rotating mechanism 23 is positioned in the reset groove 5 and the spring groove 21, the other end of a connecting spring 19 is fixedly connected with the holding rod 1, the bottom of the push rod 2 is tightly jointed with the top of the sealing block 8 in an initial state, and the tight joint with the sealing block 8 ensures that the holding rod has enough transmission capability during insulin injection, the push rod 2 drives the clamping plate 14 and the limiting plate 15 to move downwards and stretch the connecting spring 19, the push rod 2 after the movement is completed is limited through the limiting groove 17, and the situation that the push rod 2 is pulled out of the injection mechanism due to resetting and injection failure is caused is prevented.

Wherein, needle file 4 is located the bottom of liquid storage tube 9, the inside fixed mounting stand pipe 24 of needle file 4, the surface activity of needle file 4 has cup jointed outer protective housing 20, the inside activity of outer protective housing 20 has cup jointed injection head 25, injection head 25 cup joints the surface at needle file 4 through nested form, thereby for injection head 25 provides the protection, thereby prevent to cause injection head 25 to take place the damage because of colliding with, and injection head 25 cooperation needle file 4 and stand pipe 24 have realized the sealed effect of liquid storage tube 9.

Preferably, the injection head 25 forms a communicating structure through the needle seat 4 and the guide tube 24, the needle seat 4 is connected with the liquid storage tube 9 in a threaded manner, and the guide tube 24, the injection head 25 and the needle seat 4 form the communicating structure, so that the injection head 25 can be directly punctured through the skin of a human body and injected when the outer protective shell 20 is taken off, rapid injection is realized, and the outer protective shell 20 can be rapidly sleeved and reset after the injection head 25 completes injection and provides protection for the injection head 25.

Wherein, the rotating mechanism 23 comprises a driving block 6, a driving rod 7 is fixedly installed at the rear end of the driving block 6, the other end of the driving rod 7 is movably sleeved inside a spring groove 21, the other end of the driving rod 7 is fixedly connected with a return spring 22, the other end of the return spring 22 is fixedly connected with the spring groove 21, after the insulin injection is completed, the push rod 2 drives the clamping plate 14 and the limiting plate 15 to move to the designated position, at the moment, the limiting plate 15 is clamped in a limiting groove 17, when the limiting plate 15, the clamping plate 14 and the push rod 2 need to be reset, the driving block 6 can be buckled by hand and the driving rod 7 is driven to move, so that the driving rod 7 moves inside the spring groove 21 and compresses the return spring 22, because the driving block 6 is fixedly connected with the driving ring 16, when the driving ring 16 is rotated for a certain angle, the limiting plate 15 is just opposite to the alignment groove 18 up and down, at the moment, the limiting plate 15 can move upwards through the alignment groove 18, moves up and returns with the outer protective shell 20 and the catch plate 14 under the drive of the connecting spring 19.

Wherein, supporting mechanism 11 includes lower support ring 111, the top fixed mounting of lower support ring 111 has bracing piece 112, supporting ring 113 is gone up to the top fixed mounting of bracing piece 112, go up supporting ring 113's top and drive ring 16 fixed connection, supporting mechanism 11 mainly provides the support for drive ring 16, because drive ring 16 is the ring structure, it cup joints for the activity on the inner wall of holding rod 1, it provides the support of removal in-process for it to need supporting mechanism 11, and simultaneously, can upwards pull drive ring 16 under the effect of coupling spring 19 and cardboard 14 when limiting plate 15 card advances spacing groove 17, supporting mechanism 11 just makes drive ring 16 can not be driven the rebound through the joint that self gravity is greater than coupling spring 19's tensile force cooperation drive piece 6 this moment, thereby the stability of driving ring 16 has been guaranteed.

Wherein, the number of the limiting plate 15 and the aligning groove 18 is four, the two are adaptive to the overlooking size and shape, after the driving ring 16 rotates forty-five degrees, the limiting plate 15 can pass through the aligning groove 18 from top to bottom, the limiting plate 15 is reset after the injection of insulin is completed by the matching of the limiting plate 15 and the aligning groove 18, so that the push rod 2 can be reused, a patient can drive the block 6 and drive the driving rod 7 to move towards the inside of the spring groove 21 by backward fluctuation, the reset spring 22 is compressed, then the driving ring 16 is driven to rotate, the maximum value of the rotation angle of the driving block 6 is forty-five degrees due to the action of the reset spring 22, the angle is just the included angle between the limiting plate 15 and the aligning groove 18, after the driving ring 16 rotates, the limiting plate 15 just can pass through the aligning groove 18 and move out of the limiting groove 17 upwards, and the driving rod 7 and the driving block 6 drive the driving ring 16 to rotate and reset under the action of the reset spring 22, thereby completing the next injection preparation.

Wherein, the sectional shape of drive ring 16 is the assembly of right trapezoid and L type, the right trapezoid part of drive ring 16 is made by the block rubber, as figure 2, limiting plate 15 can contact the right trapezoid part of drive ring 16 at the in-process that moves down at first, thereby extrude drive ring 16 and warp then limiting plate 15 just can block into spacing groove 17, limiting plate 15's top will upwards promote the top of spacing groove 17 under the effect of spacing groove 17, but because the top of spacing groove 17 is flat, make limiting plate 15 can't extrude it, thereby spacing limiting plate 15 in spacing groove 17.

Wherein, the cardboard 14 is the assembly of two inside and outside continuous rings, the excircle cyclic segment of cardboard 14 is located the surface of spacing section of thick bamboo 12, the inner circle cyclic segment of cardboard 14 is located the inner wall of spacing section of thick bamboo 12, the inside of the partial movable joint that two rings part link to each other is in the inside of shifting chute 13, the quantity of shifting chute 13 is two and distributes respectively in the left and right sides of spacing section of thick bamboo 12 surface, and the design of cardboard 14 inside and outside ring makes cardboard 14 can keep its self stability furthest at the in-process that reciprocates, through seting up shifting chute 13, make cardboard 14 unable transmission deflection and rotation, cardboard 14 can reciprocate steadily in the inside of push rod 2.

The working principle and the using process are as follows:

when preparing injection, the outer protective shell 20 is pulled out, the needle head part of the injection head 25 is exposed, the holding rod 1 is turned upside down, the needle head part of the injection head 25 is enabled to face upwards, then the upper half part of the liquid storage tube 9 is flicked by hand, air in the liquid storage tube 9 is enabled to move upwards, the push rod 2 is pushed upwards and the sealing block 8 is driven to move upwards, air in the liquid storage tube 9 is exhausted, at the moment, the connecting spring 19 is driven and stretched, therefore, the real-time limiting effect is generated on the push rod 2, and the push rod 2 is prevented from being pushed excessively by a patient;

during injection, the needle head of the injection head 25 faces the abdomen and is pricked downwards, then the thumb presses the push rod 2 and drives the sealing block 8 to move towards the inside of the liquid storage tube 9, so that insulin in the liquid storage tube 9 is pushed into the body, at the moment, the connecting spring 19 is stretched, the clamping plate 14 and the limiting plate 15 are driven to move towards the driving ring 16, the limiting plate 15 extrudes the driving ring 16 and enables the driving ring 16 to deform, then the limiting plate 15 is clamped into the limiting groove 17 so as to be limited, and after the injection time exceeds 10 seconds, the needle head of the injection head 25 can be pulled out;

after injection, cup joint outer protective housing 20 at the surface of needle file 4, stir drive piece 6 and drive rod 7 and remove for drive rod 7 moves and compresses reset spring 22 toward the inside of spring groove 21, and drive piece 6 drives drive rod 7 and drive ring 16 and rotates, makes to just right from top to bottom groove 18 and limiting plate 15, limiting plate 15 alright with upwards driving cardboard 14 and push rod 2 and reseing under connecting spring 19's effect through just groove 18.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a painless insulin needle, includes holding rod (1), push rod (2), liquid storage tube (9) and needle file (4), its characterized in that: the inside of holding rod (1) is provided with a spacing section of thick bamboo (12), cardboard (14) have been cup jointed in the inner wall activity of a spacing section of thick bamboo (12), the external fixed surface of cardboard (14) installs limiting plate (15), the top fixedly connected with connecting spring (19) of cardboard (14), the inner wall activity of holding rod (1) has been cup jointed and has been taken the rotating ring (16), it has just groove (18) to take the top of rotating ring (16) to have seted up, the bottom of taking rotating ring (16) is provided with supporting mechanism (11), the external fixed surface of taking rotating ring (16) installs slewing mechanism (23).

2. The painless insulin needle of claim 1, characterized in that: the bottom of the holding rod (1) is provided with a clamping groove (3), the inside of the clamping groove (3) is movably clamped with a connecting ring (10), the bottom end of the connecting ring (10) is fixedly connected with a liquid storage tube (9), the top of the liquid storage tube (9) is hermetically sleeved with a sealing block (8), the push rod (2) is movably sleeved inside a limiting cylinder (12), the inner wall of the limiting cylinder (12) is provided with a moving groove (13), the inner wall of the clamping plate (14) is fixedly connected with the outer surface of the push rod (2), the middle part of the driving ring (16) is provided with a limiting groove (17), the supporting mechanism (11) is movably sleeved on the inner wall of the holding rod (1) and is positioned at the bottom of the driving ring (16), the left side of the outer surface of the holding rod (1) is provided with a reset groove (5), the rear end of the reset groove (5) is provided with a spring groove (21), and the rotating mechanism (23) is positioned in the reset groove (5) and the spring groove (21), the other end of the connecting spring (19) is fixedly connected with the holding rod (1).

3. The painless insulin needle of claim 1, characterized in that: the needle stand (4) is located the bottom of liquid storage pipe (9), the inside fixed mounting stand pipe (24) of needle stand (4), the surface activity of needle stand (4) has cup jointed outer protective housing (20), the inside activity of outer protective housing (20) has cup jointed injection head (25).

4. The painless insulin needle of claim 3, characterized in that: the injection head (25) forms a communicating structure through the needle seat (4) and the guide tube (24), and the needle seat (4) is connected with the liquid storage tube (9) in a threaded mode.

5. The painless insulin needle of claim 2, characterized in that: slewing mechanism (23) are including driving piece (6), the rear end fixed mounting of driving piece (6) has driving pole (7), the other end activity of driving pole (7) is cup jointed in the inside of spring groove (21), the other end fixedly connected with reset spring (22) of driving pole (7), the other end and the spring groove (21) fixed connection of reset spring (22).

6. The painless insulin needle of claim 2, characterized in that: the supporting mechanism (11) comprises a lower supporting ring (111), a supporting rod (112) is fixedly mounted at the top of the lower supporting ring (111), an upper supporting ring (113) is fixedly mounted at the top of the supporting rod (112), and the top of the upper supporting ring (113) is fixedly connected with a driving ring (16).

7. The painless insulin needle of claim 1, characterized in that: limiting plate (15) and adjust the quantity of groove (18) and be four and overlook size and shape looks adaptation between them, drive ring (16) and rotate forty-five degrees back, limiting plate (15) can be from top to bottom through adjusting groove (18).

8. The painless insulin needle of claim 1, characterized in that: the section of the driving ring (16) is a combination of a right trapezoid and an L shape, and the right trapezoid part of the driving ring (16) is made of a rubber block.

9. The painless insulin needle of claim 2, characterized in that: the clamping plate (14) is a combination of two internally and externally connected rings, the outer ring part of the clamping plate (14) is positioned on the outer surface of the limiting cylinder (12), the inner ring part of the clamping plate (14) is positioned on the inner wall of the limiting cylinder (12), and the two parts connected with the ring parts are movably clamped in the movable groove (13).