CN210963383U - Syringe - Google Patents

Abstract

The utility model relates to the technical field of medical instruments, in particular to a syringe. The syringe includes: a needle, a syringe, a first push rod, a first plug, a second push rod, a second plug and a first bellows sleeve; the first push rod and the second push rod are the same in sequence from outside to inside The shaft is inserted into the needle cylinder; the front end of the first push rod slidably passes through the installation hole of the second plug head and is connected with the first plug head; the front end of the second push rod passes through the installation hole of the tail end of the first push rod and connected with the second plug; the first bellows sleeve is connected between the tail of the syringe and the tail of the first push rod. The utility model improves the structure of the traditional syringe, and can effectively prevent the contamination of the inner wall of the syringe by arranging a foldable bellows sleeve. Moreover, by setting up a unique double-plug structure, the two can cooperate with each other to complete the suction action normally, and also realize the functions of filtering and discharging the air in the syringe by pushing the first plug. The structure is ingenious and the operation is convenient. .

Description

a syringe

technical field

The utility model relates to the technical field of medical instruments, in particular to a syringe.

Background technique

Currently, a syringe is a common medical device. The syringe is mainly composed of a syringe with a small hole at the front end and a matching piston core rod. When the core rod is pulled out, the liquid or gas is inhaled from the needle at the front end of the syringe, and the liquid or gas is squeezed out when the core rod is pushed in. . Syringe barrels can be either plastic or glass, and usually have a graduated indication of the volume of liquid in the syringe. However, there are the following problems in the clinical application process:

1. When the nurse dispenses medicine: If there is no standardized operation, hold the syringe core rod in the palm of the hand to extract the medicine, and then inject the medicine into the solution. When pushing the medicine, the polluted core rod returns to the syringe again to pollute the inner wall. When the contaminated syringe repeats the process of drawing medicine and pushing medicine, it has been contaminated since the second medicine liquid. In the clinic, one medicine can be used with one syringe, but because of the dosage requirements, one medicine often needs several medicines, so this kind of pollution exists in almost every dispensing process. Even though most hospitals can perform standard operations on a daily basis, in emergency, due to the urgency of time, nurses often take the medicine quickly as the criterion, grab a lot of core rods, and contaminate the medicine.

2. During standard operation, it is necessary to exhaust the air in the syringe and then inject the medicinal liquid into the sterile solution. However, in clinical practice, a lot of fluid dispensing work makes many nurses ignore this step of exhausting. Because it is difficult to be successful at one time when exhausting, you need to keep popping the bubbles to complete it, which wastes a lot of time. In this way, there is air in the prepared liquid, and bubbles will be generated when the injection speed is fast.

3. When extracting the liquid medicine from the glass safety device, sometimes there are glass fragments, but it is not easy for the nurse to detect it with the naked eye.

4. If there are very few flocs, sediments, etc. in the liquid medicine, careless nurses may ignore it and inject it directly into the human body or liquid medicine from a syringe.

5. When using a micro pump, the core rod in the syringe is exposed to the air for up to 24 hours. If the environment is not clean enough, there may be pollution.

6. If there is no way for medical staff or users to sanitize their hands or to ensure the safety and cleanliness of the environment under harsh environmental conditions such as large-scale social disasters and battlefields, the core rod exposed when extracting the medicinal solution is easily polluted. .

The information disclosed in this Background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Utility model content

The purpose of this utility model is to provide a syringe to solve the technical problems existing in the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions:

The utility model provides a syringe, which comprises: a needle, a syringe, a first push rod, a first plug, a second push rod, a second plug and a first bellows sleeve; the needle and the syringe connected; the first plug head and the second plug head are sequentially arranged inside the syringe barrel from bottom to top; the first plug head is provided with a number of filter holes, and the inside of each of the filter holes is provided with filter screen; the second plug head is provided with a mounting hole; the first push rod and the second push rod are coaxially inserted into the needle cylinder from the outside to the inside; the first push rod is along its axial direction A hollow rod cavity is provided, the front end of the first push rod slidably passes through the installation hole of the second plug head and is connected with the first plug head, and the center of the tail end of the first push rod is set There is a mounting hole; the front end of the second push rod passes through the mounting hole at the tail end of the first push rod and is connected to the second plug; the first bellows sleeve is connected to the tail of the syringe and the tail of the first plug, the first bellows sleeve is installed on the outer circumference of the first push rod and a gap is set between the first push rods, and the first bellows sleeve can Extending or shortening is performed within the moving stroke of the first push rod.

As a further technical solution, the first plug head includes: a concentrically arranged sealing ring, a rubber stopper holding part and a rubber stopper filter part; the rubber stopper filter part is provided with a number of filter holes; the rubber stopper retains The first push rod is fixedly connected with the rubber stopper holding part or the rubber stopper filter part.

As a further technical solution, the rubber stopper filter part of the rubber stopper filter part comprises: first filter holes arranged around and a second filter hole arranged in the center; the pore size of the first filter hole is larger than that of the second filter hole. The pore size of the filter pores.

As a further technical solution, the hardness of the rubber stopper holding portion is greater than the hardness of the rubber stopper filter portion.

As a further technical solution, the first push rod is provided with a first push-pull circular plate, and a center of the first push-pull circular plate is provided with a mounting hole.

As a further technical solution, the second push rod is provided with a second push-pull circular plate, and the second push-pull circular plate is located above the first push-pull circular plate.

As a further technical solution, the diameter of the second push-pull circular plate is smaller than the diameter of the first push-pull circular plate.

As a further technical solution, the upper end of the needle cylinder is provided with a connecting plate, and a first corrugated tube sleeve is connected between the connecting plate and the first push-pull circular plate.

As a further technical solution, a second bellows sleeve is arranged between the first push-pull circular plate and the second push-pull circular plate.

As a further technical solution, the first bellows sleeve and the second bellows sleeve are both transparent materials.

As a further technical solution, a vent hole and a one-way valve are arranged at the bottom of the syringe.

As a further technical solution, the filter hole includes a first expansion hole segment, an intermediate connection hole segment and a second expansion hole segment.

As a further technical solution, the second plug is a rubber plug structure.

As a further technical solution, a sealing ring is provided outside the second plug head.

Adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

The utility model improves the structure of the traditional syringe, and can effectively prevent the contamination of the inner wall of the syringe by arranging a foldable bellows sleeve, thereby preventing the contamination of the medicinal liquid. When the environment does not allow, such as the battlefield and other environments, even if the operator's hand hygiene is not up to standard, it will not contaminate the extracted liquid.

The utility model improves the structure of the traditional syringe. By arranging a unique double-plug structure, the two can cooperate with each other to normally complete the suction action, and can also filter and discharge the air in the syringe by pushing the first plug. function, ingenious structure and convenient operation.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the structural representation of the syringe provided by the first embodiment of the present invention;

2 is a front view of the first plug provided in Embodiment 1 of the present invention;

3 is a front view of another first plug provided in Embodiment 1 of the present utility model;

FIG. 4 is a schematic structural diagram of the syringe provided in the second embodiment of the present invention.

Icons: 1-The second push-pull circular plate; 2-The first push-pull circular plate; 3-The first corrugated tube sleeve; 4-Connecting plate; 5-The first push rod; 6-The second push rod; 7-The second plug 8-first plug; 9-needle; 10-filter part of rubber stopper; 11-seal ring; 12- rubber stopper holding part.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

Example 1

1 to 3, the present embodiment provides a syringe, which includes: a needle 9, a syringe, a first push rod 5, a first plug 8, a second push rod 6, a second plug 7 and The first bellows sleeve 3; the needle 9 is connected to the barrel; the first plug 8 and the second plug 7 are sequentially arranged inside the barrel from bottom to top; the first plug The head 8 is provided with a number of filter holes, and each of the filter holes is provided with a filter screen; the second plug head 7 is provided with a mounting hole; the first push rod 5 and the second push rod 6 come from the outside The first push rod 5 is provided with a hollow rod cavity along its axial direction, and the front end of the first push rod 5 slidably passes through the second plug 7 After the installation hole and connected with the first plug 8, the center of the tail end of the first push rod 5 is provided with a mounting hole; the front end of the second push rod 6 passes through the tail of the first push rod 5 The first bellows sleeve 3 is connected between the tail of the syringe and the tail of the first plug 8, and the first bellows The sleeve 3 is installed on the outer circumference of the first push rod 5 and a gap is set between the first push rods 5 , and the first bellows sleeve 3 can be extended within the moving stroke of the first push rod 5 . long or shortened.

It can be seen that the structure of the traditional syringe is improved by the utility model, and the contamination of the inner wall of the syringe is effectively prevented by arranging the foldable corrugated tube sleeve, thereby preventing the contamination of the medicinal liquid. When the environment does not allow, such as the battlefield and other environments, even if the operator's hand hygiene is not up to standard, it will not contaminate the extracted liquid. The utility model improves the structure of the traditional syringe. By setting a unique double-plug structure, the two can cooperate with each other to complete the suction action normally, and can also filter and remove the air in the syringe by pushing the first plug 8 The function of discharging is ingenious in structure and convenient in operation.

The working principle of the utility model is:

First, the liquid suction process: pull the first push rod 6 upward, and drive the first plug head 8 and the second plug head 7 to move upward at the same time, so that a negative pressure suction liquid is formed inside the syringe, and at the same time, the first bellows sleeve 3 Expand with the first putter 6 .

Second, the process of filtering and exhausting: inhale the medicinal liquid into the syringe, push the first push rod 6 downward alone, so that the first plug head 8 and the second plug head 7 are separated, and the first plug head 8 moves downward, The use of the filter holes carried by itself to realize the passage of the liquid medicine has both the function of filtering and the effect of discharging the air in the syringe without extruding the liquid medicine.

Third, the liquid injection process: the second push rod 6 is pushed downward alone, thereby driving the second plug head 7 to move downward to realize the liquid injection process.

In this embodiment, preferably, the first plug head 8 includes: a concentrically arranged sealing ring 11, a rubber stopper holding part 12 and a rubber stopper filter part 10; the rubber stopper filter part 10 is provided with a number of filter holes; The rubber stopper holding part 12 is integrally connected with the rubber stopper filter part 10 ; the first push rod 5 is fixedly connected with the rubber stopper holding part 12 or the rubber stopper filter part 10 .

In this embodiment, preferably, the rubber stopper filter part 10 of the rubber stopper filter part 10 comprises: first filter holes arranged around and second filter holes arranged in the center; The pore size of the second filter hole.

In this embodiment, preferably, the hardness of the rubber stopper holding part 12 is greater than the hardness of the rubber stopper filter part 10 .

In this embodiment, preferably, the first push rod 5 is provided with a first push-pull circular plate 2 , and an installation hole is provided in the center of the first push-pull circular plate 2 .

In this embodiment, preferably, the second push rod 6 is provided with a second push-pull circular plate 1 , and the second push-pull circular plate 1 is located above the first push-pull circular plate 2 .

In this embodiment, preferably, the diameter of the second push-pull circular plate 1 is smaller than the diameter of the first push-pull circular plate 2 .

In this embodiment, preferably, the upper end of the needle cylinder is provided with a connecting plate 4 , and a first corrugated tube sleeve 3 is connected between the connecting plate 4 and the first push-pull circular plate 2 .

In this embodiment, as a further technical solution, the second plug head 7 is a rubber plug structure.

In this embodiment, as a further technical solution, a sealing ring 11 is provided outside the second plug head 7 .

In this embodiment, as a further technical solution, the filter hole includes a first expansion hole segment, an intermediate connection hole segment and a second expansion hole segment.

Embodiment 2

4 , the second embodiment provides a syringe. This embodiment adds another technical solution for the bellows on the basis of the first embodiment. The technical features disclosed in the first embodiment are also applicable to In this embodiment, the disclosed technical features of the first embodiment will not be described repeatedly.

This embodiment provides a syringe, which includes: a needle 9, a syringe, a first push rod 5, a first plug 8, a second push rod 6, a second plug 7 and a first bellows sleeve 3; the The needle 9 is connected with the syringe; the first plug 8 and the second plug 7 are sequentially arranged inside the syringe from bottom to top; the first plug 8 is provided with a number of filter holes, The inside of each filter hole is provided with a filter screen; the second plug 7 is provided with a mounting hole; the first push rod 5 and the second push rod 6 are coaxially threaded through the In the syringe; the first push rod 5 is provided with a hollow rod cavity along its axial direction, and the front end of the first push rod 5 slidably passes through the installation hole of the second plug 7 and is connected with the first push rod 5. A plug head 8 is connected, and a mounting hole is provided in the center of the tail end of the first push rod 5; the front end of the second push rod 6 passes through the mounting hole at the tail end of the first push rod 5 and is connected to the Two plug heads 7 are connected; the first bellows sleeve 3 is connected between the tail of the syringe and the tail of the first plug 8, and the first bellows sleeve 3 is installed on the first pusher A gap is provided between the outer circumference of the rod 5 and the first push rod 5 , and the first bellows sleeve 3 can be extended or shortened within the movement stroke of the first push rod 5 .

In this embodiment, preferably, the first push rod 5 is provided with a first push-pull circular plate 2 , and an installation hole is provided in the center of the first push-pull circular plate 2 . The second push rod 6 is provided with a second push-pull circular plate 1 , and the second push-pull circular plate 1 is located above the first push-pull circular plate 2 . Preferably, the upper end of the needle cylinder is provided with a connecting plate 4 , and a first corrugated tube sleeve 3 is connected between the connecting plate 4 and the first push-pull circular plate 2 . A second bellows sleeve is arranged between the first push-pull circular plate 2 and the second push-pull circular plate 1 .

Further, in this embodiment, as a further technical solution, the first bellows sleeve 3 and the second bellows sleeve are both transparent materials.

In addition, in this embodiment, as a further technical solution, a vent hole and a one-way valve are provided at the bottom of the syringe. Specifically, above the syringe connecting needle 9, at the position on the "0" scale, an exhaust hole is provided, so that the air can be discharged without liquid, which is convenient for the nurse to quickly exhaust. The vent hole can be provided with a water-proof and breathable membrane, which can be used with a one-way valve. Above the vent hole, that is, near the "1ml", there is a filter screen, which can filter out glass debris or liquid impurities.

Adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

The utility model improves the structure of the traditional syringe, and can effectively prevent the contamination of the inner wall of the syringe by arranging a foldable bellows sleeve, thereby preventing the contamination of the medicinal liquid. When the environment does not allow, such as the battlefield and other environments, even if the operator's hand hygiene is not up to standard, it will not contaminate the extracted liquid.

The utility model improves the structure of the traditional syringe. By setting a unique double-plug structure, the two can cooperate with each other to complete the suction action normally, and can also filter and remove the air in the syringe by pushing the first plug 8 The function of discharging is ingenious in structure and convenient in operation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (10)

1. A syringe, characterized in that, comprising: a needle, a syringe, the first push rod, the first plug, the second push rod, the second plug and the first bellows sleeve; the needle is connected with the syringe; The first plug head and the second plug head are sequentially arranged inside the syringe barrel from bottom to top; the first plug head is provided with a number of filter holes, and each filter hole is provided with a filter screen inside ; The second plug head is provided with a mounting hole; the first push rod and the second push rod are sequentially coaxially threaded into the needle cylinder from the outside to the inside; the first push rod is provided with a A hollow rod cavity, the front end of the first push rod slidably passes through the installation hole of the second plug head and is connected with the first plug head, and the center of the tail end of the first push rod is provided with a mounting hole a hole; the front end of the second push rod passes through the mounting hole at the tail end of the first push rod and is connected with the second plug; The first bellows sleeve is connected between the tail of the syringe and the tail of the first plug, the first bellows sleeve is installed on the outer circumference of the first push rod, and the first push rod A gap is provided between the rods, and the first bellows sleeve can be extended or shortened within the moving stroke of the first push rod. 2. The syringe according to claim 1, wherein the first stopper head comprises: a concentrically arranged sealing ring, a rubber stopper holding part and a rubber stopper filter part; The rubber plug filter part is provided with several filter holes; The rubber stopper holding part is integrally connected with the rubber stopper filtering part; The first push rod is fixedly connected with the rubber stopper holding part or the rubber stopper filter part. 3. syringe according to claim 2, is characterized in that, the rubber stopper filter part of described rubber stopper filter part comprises: the first filter hole that is arranged around and the second filter hole that center is arranged; The pore size of the first filter hole is larger than the pore size of the second filter hole. 4 . The syringe according to claim 2 , wherein the hardness of the rubber stopper holding portion is greater than the hardness of the rubber stopper filter portion. 5 . 5 . The syringe according to claim 1 , wherein the first push rod is provided with a first push-pull circular plate, and a center of the first push-pull circular plate is provided with a mounting hole. 6 . 6 . The syringe according to claim 5 , wherein the second push rod is provided with a second push-pull circular plate, and the second push-pull circular plate is located above the first push-pull circular plate. 7 . 7. The syringe according to claim 6, wherein the diameter of the second push-pull circular plate is smaller than the diameter of the first push-pull circular plate. 8 . The syringe according to claim 7 , wherein a connecting plate is provided on the upper end of the barrel, and a first bellows sleeve is connected between the connecting plate and the first push-pull circular plate. 9 . 9 . The syringe according to claim 8 , wherein a second bellows sleeve is arranged between the first push-pull circular plate and the second push-pull circular plate. 10 . 10. The syringe according to claim 8, wherein the first bellows sleeve and the second bellows sleeve are both transparent materials.

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