CN220495269U - Rotary pressing telescopic structure and injection device - Google Patents

Abstract

The utility model provides a rotary pressing telescopic structure and an injection device, which comprise a sleeve and a rotary pressing rod, wherein the rotary pressing rod is embedded in the sleeve, a stepped clamping groove is formed in the sleeve, a convex column is fixedly connected to the rotary pressing rod, and the convex column can be mutually clamped with each step of the stepped clamping groove to lock the rotary pressing rod. The convex column moves in the stepped clamping groove in a stepped manner, so that the quantitative conveying of the liquid medicine is further carried out. The rotary pressing telescopic structure and the injection device can carry out multi-dose liquid medicine conveying in vaccination work, are safe and sanitary, are simple to assemble, small in size and low in cost, and have high economical efficiency.

Description

Rotary pressing telescopic structure and injection device

Technical Field

The utility model relates to the field of medical equipment, in particular to a rotary pressing telescopic structure and a quantitative administration injection device, and more particularly relates to a quantitative injection device for atomization administration.

Background

One way of very effective against respiratory diseases is by nebulization, by which the liquid medicine is nebulized so that the liquid medicine can directly act on the respiratory tract to produce a better effect. In vaccination, the vaccine can also be nebulized, which is a way of direct action on the respiratory tract compared to traditional intramuscular injection, to produce mucosal immunity.

Prior art devices for the nebulisation of vaccines have involved continuous dispensers (patent publication number CN 217663410U) adapted to syringes, which in use require the syringe to be assembled in the dispenser before the liquid is sucked up, which dispenser is to be used with a nebulizer holder.

In addition, the pre-encapsulated vaccine adopts a mode of quantitatively filling liquid medicine, so that infection or secondary pollution in vaccination can be reduced. The vaccination needs quantitative vaccine liquid medicine, and when a non-professional user uses a prefilled syringe to perform vaccine injection, the user is difficult to determine the injection quantity and can not accurately inject the corresponding vaccine liquid medicine. Too little vaccination with the vaccine solution does not produce sufficient amounts of antibodies in the vaccinator, and if the vaccine solution is excessive, side effects may be aggravated in the patient.

Disclosure of Invention

In view of the above drawbacks of the prior art, the present utility model aims to provide a rotary pressing telescopic structure and an injection device, wherein the rotary pressing telescopic structure is convenient to operate, simple in structure, and safe and sanitary, and the injection device can perform quantitative administration, so that the problems that in the prior art, the vaccine liquid medicine delivery needs to be quantified and the vaccine atomization adapting device in the prior art is inconvenient to use can be solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a rotatory telescopic structure that presses, including sleeve pipe 1 and rotatory pressing rod 2, rotatory pressing rod 2 is embedded to be installed in sleeve pipe 1, is provided with echelonment draw-in groove on the sleeve pipe 1, and rotatory pressing rod 2 is last fixedly connected with projection, and the projection can lock rotatory pressing rod with every level of ladder draw-in groove each other. The rotary pressing rod stretches and contracts through the clamping of the convex column and the stepped clamping groove.

Further, the rotary pressing rod 2 comprises a rotary section and a pressing section, the two parts are fixedly connected, and the convex column is fixedly connected to the rotary section.

Further, the top of the rotary pressing rod is provided with threads. Can be used for skid resistance during the use process.

The sleeve 1 comprises an upper part and a lower part, the upper half section is provided with a ladder-shaped clamping groove which is matched with a convex column of the rotary section of the rotary pressing rod, the lower half section of the sleeve wraps the pressing section of the rotary pressing rod, and the port is provided with an internal thread. The lower half section of the sleeve wraps the pressing section of the rotary pressing rod, so that the rotary pressing rod can drive and press the pre-encapsulated vaccine preparation.

Further, a channel is connected to the stepped slot of the sleeve, so that the convex column can reach the stepped slot through the channel.

Further, a prismatic table is arranged at the top of the sleeve, and a protective sleeve is detachably arranged to limit the position of the convex column; the further protective sleeve is mounted in a rotary snap-in manner.

Furthermore, in the step-shaped clamping groove of the sleeve 1, each step has the same height and the corresponding liquid medicine amount is the same, the liquid outlet amount delivered by each pressing is 0.05-0.5mL, and preferably, the liquid medicine amount delivered by each pressing is 0.1-0.2mL; more preferably, the amount of drug solution delivered per compression is 0.1ml. The ladder-shaped clamping grooves of the sleeve 1 can ensure that the telescopic lengths of the rotary pressing rods are the same each time through the ladder with the same height.

Further, the number of steps of the stepped clamping groove of the sleeve 1 is 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15. The number of steps being indicative of the degree to which the rotary pressing bar is retractable relative to the sleeve, i.e. indicative of the rotary pressing structure

The utility model provides an injection device which comprises the rotary pressing telescopic structure and a liquid storage cavity.

More preferably, the top port of the liquid storage cavity 4 is provided with external threads which can be matched with the external threads of the sleeve. The rotary pressing rod is clamped with different clamping grooves of the sleeve, so that the rotary pressing rod moves downwards, the injection in the liquid storage cavity is driven to go out, and one dose of liquid medicine can be discharged after the rotary pressing rod rotates once.

Further, the inner diameter of the liquid storage cavity is 8-20mm, preferably 8.7mm. Can be matched with a standard prefilled medicine liquid bottle.

Further, the height of the liquid storage cavity is 30-70mm. Can be used for receiving standard prefilled medicine liquid bottles.

Further, the bottom of the liquid storage cavity is provided with a liquid outlet, and the inner diameter of the liquid outlet is smaller than the diameter of the cavity of the liquid storage cavity. The liquid storage port can be in interference fit with the built-in liquid medicine bottle, and the position of the liquid medicine bottle is fixed.

Further, the injection device is also provided with a spring 5, the spring 5 is movably arranged between the liquid storage cavity and the rotary pressing rod, and the diameter of the spring is smaller than that of the liquid storage cavity and the rotary pressing rod. The rotary pressing rod is in an initial state, and the distance between the rotary pressing rod and the liquid medicine bottle of the liquid storage cavity is the same as the length of the spring in the initial state. The pressure of the rotary pressing rod on the spring in the initial state is equal to the resistance of the rubber plug in the liquid medicine bottle, and the spring is compressed along with the downward movement of the rotary pressing rod, so that the pressure of the spring is greater than the resistance of the rubber plug in the liquid medicine bottle, and the rubber plug is pushed to perform injection.

Further, be provided with transparent observation area in the stock solution chamber, further, be provided with the scale mark in the observation area. The residual amount of the liquid medicine in the Karsch bottle can be observed.

Further, the injection device comprises a liquid outlet means 7, preferably a needle. The vaccine liquid medicine is injected into the atomizing device through the injection device, and the vaccine liquid medicine is atomized.

The beneficial effects of the utility model are as follows: 1. by using the rotary pressing telescopic structure, on one hand, the vaccination work of multiple people can be carried out, the vaccination time is saved, and the whole process is safe and sanitary; on the other hand, by using the rotary pressing telescopic structure in which the boss and the stepped engaging groove are matched with each other, quantitative pressing can be performed. 2. Through the injection device in this application, can control liquid medicine ration play liquid, the liquid storage chamber uses the prefilled vaccine in the injection device, can guarantee the safety sterility of liquid medicine, and after the liquid medicine injection is accomplished, can resume rotatory pressing telescopic structure through being provided with the spring in the injection device. 3. The injection device in the application is simple to assemble, small in occupied space, low in cost and high in economical efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a rotary compression telescoping structure;

FIG. 2 is a schematic view of a protrusion and a stepped slot of a rotary pressing telescopic structure;

FIG. 3 is a schematic view of an injection device;

FIG. 4 is a cross-sectional view of the injection device after assembly;

FIG. 5 is a schematic diagram illustrating assembly of the spring and reservoir with the rotary compression bar in the injection device;

FIG. 6 is a schematic illustration of the connection between a prefilled vial and a reservoir outlet port in an injection device;

reference numerals: 1. a sleeve; 2. rotating the pressing rod; 3. a protective sleeve; 4. a liquid storage cavity; 5. a spring; 6. prefilled type liquid medicine bottle; 7. a liquid outlet device; 8. and (5) a convex column.

Detailed Description

In order to make the technical content of the present utility model more clearly understood, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Example 1

Referring to fig. 1-3, the utility model provides a technical scheme that: the rotary pressing telescopic structure comprises a rotary pressing rod 2 and a sleeve 1, wherein the rotary pressing rod 2 is arranged in the sleeve 1. The rotary pressing rod 2 is divided into two parts, namely a rotary section and a pressing section, wherein a convex column 8 is fixedly connected to the rotary section, the top end of the rotary section is a rotary operation area, and anti-skidding patterns are arranged in the operation area, so that the hand skidding can be prevented. The pressing section is fixedly connected with the rotating section, and the cross section diameter of the pressing section is slightly smaller than that of the rotating section.

The sleeve 1 is divided into an upper section and a lower section, and the two sections are integrated. The upper half section is provided with a step-shaped clamping groove which is clamped with the upper convex column 8 of the rotating section of the rotating pressing rod, and the convex column 8 can move in the step-shaped clamping groove, so that the change of the relative position between the rotating pressing rod 2 and the sleeve 1 is realized. The lower half section of the sleeve has smooth surface, the bottom is provided with internal threads, and the sleeve can be in threaded connection with other containers. The top of the sleeve is provided with a prismatic table, and the protective sleeve 3 is detachably installed, so that the convex column is prevented from sliding out of the sleeve.

The step-shaped clamping groove on the sleeve is provided with 5, 10 or 15 steps, namely the sleeve can be pressed down for 5, 10 or 15 times, and the steps are arranged to be the same in height, so that equal-amount telescopic delivery can be performed.

The sleeve 1 corresponds to the rotary pressing rod 2, a channel is connected to the stepped clamping groove of the sleeve, the convex column 8 reaches the stepped clamping groove through the channel, the convex column is clamped with the stepped clamping groove, the position between the whole sleeve 1 and the rotary pressing rod 2 is locked, and the protective sleeve 3 is mounted to the sleeve terrace by means of rotary clamping. The operation area of the rotary pressing rod is rotated anticlockwise or clockwise, so that the position of the convex column in the stepped clamping groove is moved in a stepped mode, and the rotary pressing structure stretches.

Example 2

Referring to fig. 1-6, the utility model provides a technical scheme that: an injection device comprising a rotary pressing structure as in embodiment 1, a reservoir 4, a tapping means 7 and a spring 5. The inner diameter of the liquid storage cavity 4 is 8.7mm, the height is 50mm, the inside is hollow, and a pre-filling and sealing type liquid medicine bottle 6 (such as a vaccine pre-filling and sealing card type bottle) can be placed. The top of the liquid storage cavity 4 is provided with external threads which are in threaded connection with the sleeve 1 in the rotary pressing structure. The cavity in the liquid storage cavity 4 is transparent and is provided with scale marks, so that the liquid outlet amount of the pre-filling and sealing type liquid medicine bottle 6 in the liquid storage cavity 4 can be observed. The bottom of the liquid storage cavity 4 is a liquid outlet end, wherein the liquid outlet port is arranged at the center of the liquid storage cavity 4, the diameter of the liquid outlet port is smaller than that of the liquid storage cavity 4, the inside of the liquid outlet port is in interference fit with a conventional prefilled liquid medicine bottle, and the outside of the liquid outlet port is detachably spliced with a needle head of the liquid outlet device 7.

The spring 5 is movably arranged between a pressing section in the rotary pressing rod 2 and the prefilled type liquid medicine bottle 6 of the liquid storage cavity 4, and in an initial state, the pressure of the pressing section to the spring 5 is equal to the resistance of a rubber plug in the liquid medicine bottle 6, and the spring 5 is compressed along with the downward movement of the rotary pressing rod 2, so that the pressure of the spring 5 is larger than the resistance of the rubber plug in the prefilled type liquid medicine bottle. The diameter of the spring is smaller than that of the pressing section and is smaller than that of the rubber plug in the prefilled medicine liquid bottle 6, so that the spring can be extruded through the driving of the pressing section, the pressing section is guaranteed to press the prefilled medicine liquid bottle 6 in the liquid storage cavity 4, and liquid medicine in the pressing section is driven to go out. The sleeve 1 in the rotary pressing telescopic structure is provided with a clamping groove with 15 steps, so that 15 doses of liquid medicine can be conveyed. By providing the spring 5, the resilience of the rotary pressing rod 2 can be supplemented, and the repeated use of the injection device is ensured. The working principle of the utility model is as follows: when the injection device is used, firstly, the injection device is assembled, firstly, the prefilled medicine liquid bottle 6 is internally arranged in the liquid storage cavity 4, and is inserted into a liquid outlet port of the liquid storage cavity 4 in an interference fit mode. Then, the rotary pressing rod 2 is installed from the upper end of the sleeve 1, the sleeve and the rotary pressing rod 2 are fixed in position through mutual clamping of the convex column 8 and the clamping groove, and the protective sleeve 3 is installed at the upper end of the sleeve 1 in a rotary clamping mode so as to prevent the convex column 8 from sliding out. The spring 5 is arranged between the rest of the filling and sealing type liquid medicine bottle 6 of the liquid storage cavity 4 and the pressing section of the rotary pressing rod 2. Finally, the needle is inserted outside the liquid outlet port of the injection device through the threaded connection between the sleeve 1 and the liquid storage cavity 4, and then the whole injection device is assembled.

When the device is used, the operation area of the rotary pressing rod 2 is rotated anticlockwise to enable the convex column 8 to move stepwise, and the rotary pressing rod moves downwards to shrink by a certain height when rotating once, so that a dose of liquid medicine can be conveyed. And the height of each step is the same, so that the same output of each dose of liquid medicine can be ensured. The liquid storage cavity is transparent and is provided with scale marks, so that the residual quantity of the liquid medicine can be observed. The device is simple and convenient to assemble, and can ensure the accurate quantification of the inoculation amount of the liquid medicine and the same delivery amount of each dose of the liquid medicine. After the liquid medicine in the liquid storage cavity is conveyed, the liquid medicine can rebound through clockwise rotation, so that the injection device can be reused.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (15)

1. The rotary pressing telescopic structure is characterized by comprising a sleeve and a rotary pressing rod, wherein the rotary pressing rod is embedded in the sleeve, and the sleeve is provided with a stepped clamping groove; the rotary pressing rod is fixedly connected with a convex column, and the convex column can be mutually clamped and locked with each stage of step clamping groove.

2. The rotary compression telescopic structure according to claim 1, wherein the rotary compression bar comprises a rotary segment and a compression segment.

3. The rotary pressing telescopic structure according to claim 1, wherein the top of the rotary pressing bar is provided with threads.

4. The rotary pressing telescopic structure according to claim 1, wherein the sleeve comprises an upper section and a lower section, the upper section is provided with the step-shaped clamping groove, the step-shaped clamping groove is matched with the convex column of the rotary section of the rotary pressing rod, the lower section of the sleeve wraps the pressing section of the rotary pressing rod, and the port is provided with internal threads.

5. The rotary pressing telescopic structure according to claim 1, wherein a channel is connected to the stepped clamping groove of the sleeve, and the protruding column can reach the stepped clamping groove through the channel.

6. The rotary pressing telescopic structure according to claim 4, wherein a prismatic table is arranged at the top of the sleeve, and the prismatic table is detachably provided with a protective sleeve for limiting the position of the convex column.

7. The rotary compression telescoping structure of claim 1, wherein each step has the same height in the stepped catch of the sleeve.

8. The rotary pressing telescopic structure according to claim 1, wherein the number of steps of the stepped clamping groove of the sleeve is 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15.

9. An injection device comprising a rotary compression retraction structure according to any one of claims 1 to 8 and a reservoir.

10. An injection device according to claim 9, wherein the reservoir top port is provided with external threads matching the internal threads of the sleeve.

11. An injection device according to claim 9, wherein the reservoir has an inner diameter of 8-20mm.

12. The injection device of claim 9, wherein the reservoir bottom is provided with a fluid outlet port having an inner diameter less than the reservoir cavity diameter.

13. The injection device of claim 9, further comprising a spring disposed therein, the spring having a diameter smaller than the reservoir and the rotary compression bar compression section.

14. An injection device according to claim 9, wherein a transparent viewing area is provided in the reservoir.

15. The injection device of claim 9, further comprising a liquid outlet device.