CN217219773U

CN217219773U - Novel self-service hypodermic syringe based on electroactive polymer driver

Info

Publication number: CN217219773U
Application number: CN202121442325.7U
Authority: CN
Inventors: 李毅; 孙博; 冯徐鑫; 郭明飞; 李研彪
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-08-19
Anticipated expiration: 2031-06-28

Abstract

Novel self-service hypodermic syringe based on electroactive polymer driver, including the driver, the amplifier, syringe needle subassembly and cartridge bag subassembly, the amplifier, the syringe needle subassembly is installed respectively in the cartridge bag subassembly, the driver is connected with the amplifier, the amplifier is connected with the syringe needle subassembly, amplify the drive displacement of driver through the amplifier, so that pierce through amplifier drive syringe needle subassembly, thereby it is internal to make the syringe needle subassembly inject the medicine in the cartridge bag subassembly to the user, the injection process singlehanded can be accomplished, can effectively avoid partial syringe needle phobia and lack the psychological disorder of the user of injection experience, small in structure, the user of being convenient for uses.

Description

Novel self-service hypodermic syringe based on electroactive polymer driver

Technical Field

The utility model belongs to the technical field of the syringe, concretely relates to novel self-service hypodermic syringe based on electroactive polymer driver.

Background

Subcutaneous injection refers to the injection of a medicinal fluid into the subcutaneous tissue. The common injection sites are the upper arm and the lateral side of the thigh. Subcutaneous injection is an important form of direct administration, is slow and slow compared to intravenous injection, and is suitable for drugs which are required to reach the drug effect quickly and avoid blood dilution and cannot or cannot be orally taken, such as insulin, recombinant erythropoietin and the like.

At present, most of medicines are injected by manual operation of professional medical staff, but medicines such as insulin need to be injected by patients independently due to frequent administration for a long time. Most patients have certain psychological disorder to injection on the premise of not being trained, and part of patients with needle point phobia cannot finish injection autonomously due to psychological fear.

The patent with the application number of 201811530534.X discloses a gel driver, which comprises a plurality of gel layers, wherein metal electrodes are arranged between the gel layers, each metal electrode comprises an anode plate and a cathode plate, and the anode plates and the cathode plates are arranged in a staggered manner; and a plurality of wire holes are formed in one side of each of the anode plate and the cathode plate, the wire holes of the anode plate/the cathode plate are consistent in direction, and the wires are used for respectively connecting the anode plate or the cathode plate in series from the bottom end to the top end through the wire holes. The invention has the advantages that the overall structure is small and the weight is light through the matching of the conducting wire and the conducting wire hole, and the stability of the multilayer gel driver is greatly improved through the reinforcement of the conducting wire, so that the mobility and the operability are enhanced, and the packaging technology is greatly improved; the gel driver is combined to provide injection power for the hypodermic syringe, so that the injection psychological barrier of a patient can be relieved.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a novel self-service hypodermic syringe based on an electroactive polymer driver,

in order to solve the technical problems, the utility model adopts the technical proposal that,

novel self-service hypodermic syringe based on electroactive polymer driver, including driver, amplifier, syringe needle subassembly and cartridge bag subassembly, amplifier, syringe needle subassembly are installed respectively in the cartridge bag subassembly, and the driver is connected with the amplifier, and the amplifier is connected with the syringe needle subassembly, amplifies the drive displacement of driver through the amplifier to in impale the cartridge bag subassembly through amplifier drive syringe needle subassembly.

Furthermore, the medicine package assembly comprises a sleeve, a solution chamber and a solution bag, the solution bag is fixedly arranged in the solution chamber, the solution chamber is fixedly arranged in the sleeve, the needle head assembly is slidably arranged in the sleeve, and the needle head assembly is positioned above the solution chamber.

Furthermore, the solution chamber comprises an upper liquid chamber and a lower liquid chamber, the upper liquid chamber is connected with the lower liquid chamber in a sliding mode, an upper through hole is formed in the upper liquid chamber, a lower through hole is formed in the lower liquid chamber, and the upper through hole and the lower through hole are coaxially arranged.

Further, the needle assembly comprises a transmission platform and a needle, the needle is fixedly mounted on the transmission platform, the transmission platform is connected with the sleeve in a sliding mode, and the amplifier is connected with the transmission platform in a rotating mode.

Furthermore, the outside cover of syringe needle is equipped with reset spring, and reset spring is connected with transmission platform, solution chamber respectively.

Furthermore, the needle head comprises a needle head base and a needle tube, the needle tube is fixedly arranged on the needle head base, and a liquid inlet hole is formed in the side wall of the needle tube.

Furthermore, the amplifier comprises a V-shaped connecting rod and a connecting rod, the V-shaped connecting rod comprises a first rod piece and a second rod piece, the first rod piece is fixedly connected with the second rod piece, the second rod piece is rotatably connected with the needle head assembly through the connecting rod, and the first rod piece is matched with the amplifier.

Furthermore, a fixed shaft is rotatably arranged at the joint of the first rod piece and the second rod piece and is fixedly connected with the sleeve.

Further, the driver includes gel driving piece, liftout piece, drive sleeve and power head, and the gel driving piece is installed in the drive sleeve, and power head fixed mounting is in one side tip of drive sleeve, and is connected with the gel driving piece, liftout piece and gel driving piece looks adaptation.

Furthermore, the ejection piece comprises an elastic column, an ejection plate and a push rod, the push rod and the elastic column are respectively and fixedly connected to the end faces of the two sides of the ejection plate, the ejection plate is clamped in the driving sleeve through the elastic column, and the push rod is rotatably provided with a roller.

Furthermore, the self-service hypodermic syringe still includes angle adjusting part, and the cartridge bag subassembly is installed on angle adjusting part with adjustable, and angle adjusting part includes angle scale and fixation clamp, and the fixation clamp rotates and installs on the angle scale.

The utility model has the advantages that the injector adopts the flexible driver as the power source, and the special nonlinear output force can avoid the damage of the rigid force of the traditional rigid driver to the subcutaneous tissues of the human body; the hidden needle head can avoid the psychological burden of the patient caused by the needle head and the process that the needle head punctures the human body to the maximum extent; the design of the spring clamp can completely release the other hand of the patient, when in use, the spring clamp is used for clamping part of tissues and then the top button is pressed down to complete injection, so that the patient can complete injection by one hand at the shoulder and other parts.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic half-section view of fig. 1.

Fig. 3 is a schematic deployment view of the syringe.

Fig. 4 is a schematic view of the structure of the needle.

Fig. 5 is a schematic view of the structure of the V-shaped link.

Reference numerals are as follows: the device comprises a driver 1, an amplifier 2, a needle assembly 3, a medicine package assembly 4, a sleeve 5, a solution chamber 6, a solution bag 7, an upper liquid chamber 8, a lower liquid chamber 9, an upper through hole 10, a transmission platform 12, a needle 13, a reset spring 14, a needle base 15, a needle tube 16, a liquid inlet hole 17, a V-shaped connecting rod 18, a connecting rod 19, a first rod piece 20, a second rod piece 21, a fixing shaft 22, a gel driving piece 23, an ejection piece 24, a driving sleeve 25, a power head 26, an elastic column 27, an ejection plate 28, a push rod 29, a roller 30, an angle plate 31, a fixing clamp 32, a guide strip 33, a fixing pin 34, an adjusting groove 35, a clamping groove 36 and a roller groove 37.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Novel self-service hypodermic syringe based on electroactive polymer driver, including driver 1, amplifier 2, syringe needle subassembly 3 and cartridge bag subassembly 4, amplifier 2, syringe needle subassembly 3 is installed respectively in cartridge bag subassembly 4, driver 1 is connected with amplifier 2, amplifier 2 is connected with syringe needle subassembly 3, enlarge the drive displacement of driver 1 through amplifier 2, so that pierce through amplifier 2 drive syringe needle subassembly 3 cartridge bag subassembly 4, thereby make syringe needle subassembly 3 inject the medicine in the cartridge bag subassembly to the user internal, the injection process singlehanded can be accomplished, can effectively avoid partial syringe needle fear syndrome and the psychological disorder of the user who lacks the injection experience, the structure is small and exquisite, be convenient for the user to use.

The medicine package assembly 4 comprises a sleeve 5, a solution chamber 6 and a solution bag 7, the sleeve 5 is fixedly connected with the driver 1, the solution bag 7 is fixedly installed in the solution chamber 6, the solution chamber 6 is fixedly installed in the sleeve 5, the needle assembly 3 is slidably installed in the sleeve 5, and the needle assembly 3 is located above the solution chamber 6, so that the needle assembly 3 can conveniently pierce through the solution bag 7, and the medicine can be conveniently injected into the body of a user.

The solution chamber 6 comprises an upper solution chamber 8 and a lower solution chamber 9, the upper solution chamber 8 is in sliding connection with the lower solution chamber 9, an upper through hole 10 is formed in the upper solution chamber 8, a lower through hole is formed in the lower solution chamber 9, the upper through hole 10 and the lower through hole are coaxially arranged, the upper solution chamber 8 is smaller in diameter and smaller than one half of the lower solution chamber 9 compared with the lower solution chamber 9, and injection in the solution bag can be extruded out of the two solution chambers to the maximum extent.

The syringe needle subassembly 3 includes transmission platform 12 and syringe needle 13, and syringe needle 13 fixed mounting is on transmission platform 12, transmission platform 12 and sleeve 5 sliding connection, and amplifier 2 rotates with transmission platform 12 to be connected, and in this embodiment, the shaping has a gib block 33 in the sleeve 5, and is corresponding, and the shaping has the guide way on the transmission platform 12 lateral wall, is convenient for lead the removal of transmission platform 12, prevents that transmission platform 12 from taking place to twist reverse.

The outside cover of syringe needle 13 is equipped with reset spring 14, and reset spring 14 is connected with transmission platform 12, solution chamber 6 respectively, and syringe needle 13 resets after the completion of the injection of being convenient for, when transmission platform drove the syringe needle downstream, leaves the certain distance between the beginning and the reset spring, and transmission platform does not exert pressure through reset spring to last solution chamber. After the needle head enters a human body for a certain distance, the transmission platform compresses the reset spring to apply pressure to the upper solution chamber, the upper solution chamber and the lower solution chamber together extrude a solution bag in the solution chamber, the liquid inlet groove in the needle head is just communicated with the solution bag, and injection in the solution bag enters subcutaneous tissues of the human body through the liquid inlet groove under the action of pressure to complete injection.

The needle 13 includes a needle base 15 and a needle tube 16, the needle tube 16 is fixedly mounted on the needle base 15, a liquid inlet hole 17 is formed on the side wall of the needle tube 16, and the medicine in the solution chamber 6 flows into the needle tube 16 through the liquid inlet hole 17, so that the medicine is injected into the user.

The amplifier 2 comprises a V-shaped connecting rod 18 and a connecting rod 19, the V-shaped connecting rod 18 comprises a first rod piece 20 and a second rod piece 21, the first rod piece 20 is fixedly connected with the second rod piece 21, the second rod piece 21 is rotatably connected with the needle assembly 3 through the connecting rod 19, the first rod piece 20 is matched with the amplifier 2, and the effective length of the first rod piece 20 (the distance between the connecting position of the driver 1 and the first rod piece 20 and the connecting position of the first rod piece 20 and the second rod piece 21) is smaller than the length of the second rod piece 21, so that the driving displacement of the driver 1 can be amplified conveniently.

The joint of the first rod piece 20 and the second rod piece 21 is rotatably provided with a fixed shaft 22, the fixed shaft 22 is fixedly connected with the sleeve 5, and the joint of the first rod piece 20 and the second rod piece 21 is fixed, so that the V-shaped connecting rod 18 can amplify the driving displacement.

The driver 1 comprises a gel driving part 23, an ejection part 24, a driving sleeve 25 and a power head 26, wherein the gel driving part 23 is arranged in the driving sleeve 25, the power head 26 is fixedly arranged at the end part of one side of the driving sleeve 25 and is connected with the gel driving part 23, the ejection part 24 is matched with the gel driving part 23, and the PVC gel driver is electrified to contract, and the characteristic of power failure recovery provides power for the puncture of the needle head. When the PVC gel actuator is de-energized, the PVC gel actuator returns to push the displacement amplification means to transmit force to the needle via the ejector member 24.

Ejector member 24 includes elastic column 27, liftout plate 28 and push rod 29, elastic column 27 fixed connection respectively are at the both sides terminal surface of liftout plate 28, and liftout plate 28 passes through elastic column 27 card and establishes in drive sleeve 25, rotate on the push rod 29 and install gyro wheel 30, through the setting of gyro wheel 30, are convenient for reduce the frictional force of ejector member 24 and first member 20 to improve the life of this syringe.

In order to ensure that the roller 30 can stably drive the V-shaped link 18 to rotate, a roller groove 37 is formed on the first rod 20, and the roller 30 is matched with the roller groove 37.

The self-service hypodermic syringe still includes angle adjusting part, and cartridge bag subassembly 4 is installed on angle adjusting part through the adjustable of fixed pin 34, and angle adjusting part includes angle scale 31 and fixation clamp 32, and the fixation clamp 32 rotates and installs on angle scale 31, fixes this syringe on the human body through mount 32, adjusts the angle of syringe through angle scale 31.

Forming on the angle scale 31 has adjustment tank 35 and joint groove 36, and joint groove 36 is connected with adjustment tank 35, and fixed pin 34 can slide in adjustment tank 35, carries out angle modulation, and joint groove 36 is used for fixing fixed pin 34, prevents that the injection ware from taking place relative rotation in the injection process.

In this embodiment, be equipped with the button in the power head 26, power and pressure boost module, before the use, press the top button, the output voltage pressure boost of pressure boost module with lithium battery power to certain size makes gel driving piece 23 shrink, treat that syringe needle, solution room etc. install the back, loosen the button, drive unit's reply pierces certain degree of depth via displacement amplifier 2 promotion preceding syringe needle, when pricking a certain degree of depth, the solution of solution room receives the extrusion and gets into human subcutaneous tissue with its inside solution via the hole on syringe needle upper portion. After the injection is finished, the button is pressed again, and the spring on the solution chamber enables the needle head to be separated from the human body. The injection is complete.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the terms corresponding to the reference numerals in the figures are used more herein, the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any one of the additional limitations of the present invention.

Claims

1. Novel self-service hypodermic syringe based on electroactive polymer driver, which is characterized by comprising a driver (1), an amplifier (2), a needle assembly (3) and a medicine package assembly (4), wherein the amplifier (2) and the needle assembly (3) are respectively installed in the medicine package assembly (4), the driver (1) is connected with the amplifier (2), the amplifier (2) is connected with the needle assembly (3), the driving displacement of the driver (1) is amplified through the amplifier (2), so that the medicine package assembly (4) is pierced through the amplifier (2) by driving the needle assembly (3), the driver (1) comprises a gel driving piece (23), an ejection piece (24), a driving sleeve (25) and a power head (26), the gel driving piece (23) is installed in the driving sleeve (25), and the power head (26) is fixedly installed at the end part of one side of the driving sleeve (25), and is connected with the gel driving part (23), the ejecting part (24) is matched with the gel driving part (23), and the amplifier (2) is connected with the ejecting part (24).

2. The novel auto-hypodermic syringe based on an electroactive polymer driver according to claim 1, wherein the drug pack assembly (4) comprises a sleeve (5), a solution chamber (6) and a solution bag (7), the solution bag (7) is fixedly mounted in the solution chamber (6), the solution chamber (6) is fixedly mounted in the sleeve (5), the needle assembly (3) is slidably mounted in the sleeve (5), and the needle assembly (3) is located above the solution chamber (6).

3. The novel auto-hypodermic syringe based on electroactive polymer driver according to claim 2, wherein the solution chamber (6) comprises an upper chamber (8) and a lower chamber (9), the upper chamber (8) is slidably connected with the lower chamber (9), the upper chamber (8) is formed with an upper through hole (10), the lower chamber (9) is formed with a lower through hole, and the upper through hole (10) and the lower through hole are coaxially arranged.

4. The novel auto-hypodermic syringe based on an electroactive polymer driver according to claim 2, wherein the needle assembly (3) comprises a drive platform (12) and a needle (13), the needle (13) is fixedly mounted on the drive platform (12), the drive platform (12) is slidably connected to the sleeve (5), and the amplifier (2) is rotatably connected to the drive platform (12).

5. The novel auto-hypodermic syringe based on electroactive polymer actuator as claimed in claim 4, wherein the needle (13) comprises a needle base (15) and a needle tube (16), the needle tube (16) is fixedly mounted on the needle base (15), and the side wall of the needle tube (16) is formed with an inlet opening (17).

6. The novel autoinjector based on the electroactive polymer driver of claim 2, wherein the amplifier (2) comprises a V-shaped link (18) and a connecting rod (19), the V-shaped link (18) comprises a first rod (20) and a second rod (21), the first rod (20) is fixedly connected with the second rod (21), the second rod (21) is rotatably connected with the needle assembly (3) through the connecting rod (19), and the first rod (20) is adapted to the amplifier (2).

7. The novel auto-hypodermic syringe based on electroactive polymer driver according to claim 6, wherein the joint of the first lever (20) and the second lever (21) is rotatably mounted with a fixing shaft (22), and the fixing shaft (22) is fixedly connected with the sleeve (5).

8. The novel autoinjector based on the electroactive polymer driver as claimed in claim 7, wherein the ejector (24) comprises an elastic column (27), an ejector plate (28) and a push rod (29), the push rod (29) and the elastic column (27) are respectively and fixedly connected to two side end faces of the ejector plate (28), the ejector plate (28) is clamped in the drive sleeve (25) through the elastic column (27), and a roller (30) is rotatably mounted on the push rod (29).

9. The novel autoinjector based on electroactive polymer drive as claimed in claim 7, further comprising an angle adjustment assembly on which the drug pack assembly (4) is adjustably mounted, the angle adjustment assembly comprising an angle scale (31) and a fixing clip (32), the fixing clip (32) being rotatably mounted on the angle scale (31).