CN215653115U - Medical sterile syringe - Google Patents
Medical sterile syringe Download PDFInfo
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- CN215653115U CN215653115U CN202120653464.8U CN202120653464U CN215653115U CN 215653115 U CN215653115 U CN 215653115U CN 202120653464 U CN202120653464 U CN 202120653464U CN 215653115 U CN215653115 U CN 215653115U
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- cylinder
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Abstract
The utility model discloses a medical sterile injector which comprises a needle cylinder, a push rod and a piston. The needle cylinder comprises a main cylinder body and a conical cylinder, the conical cylinder is connected to one end of the main cylinder body, a containing cavity is formed in the main cylinder body, one end, far away from the conical cylinder, of the main cylinder body is provided with an opening, a conical cavity is formed in the conical cylinder and communicated with the containing cavity, a liquid outlet communicated with the conical cavity is further formed in one end, far away from the main cylinder, of the conical cylinder, and one end of a push rod extends into the containing cavity through the opening; the piston comprises a main body part and an extension part, the main body part is fixedly connected with the push rod, the extension part is connected to the surface of the main body part, which is far away from the push rod, and when the push rod moves towards the conical barrel, the extension part can extend into the conical cavity. The technical scheme of the utility model aims to optimize the structure of the medical sterile syringe and avoid the problem of waste of liquid medicine.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a medical sterile syringe.
Background
The medical sterile injector comprises a puncture needle, a syringe and a push rod, and is mainly used for clinical transfusion, vaccine injection, exhaust and other purposes. The existing medical sterile syringe has various problems in clinical use, for example, when a push rod is pushed in place during injection and liquid medicine pushing, part of liquid medicine still remains at the end of a syringe, and all the liquid medicine cannot be sent out, so that the liquid medicine is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a medical sterile syringe, aiming at optimizing the structure of the medical sterile syringe and avoiding the problem of waste of liquid medicine.
In order to achieve the above object, the present invention provides a medical sterile injector, comprising:
the needle cylinder comprises a main cylinder body and a conical cylinder, the conical cylinder is connected to one end of the main cylinder body, a containing cavity is formed inside the main cylinder body, one end, far away from the conical cylinder, of the main cylinder body is provided with an opening, a conical cavity is formed inside the conical cylinder and communicated with the containing cavity, and a liquid outlet communicated with the conical cavity is further formed at one end, far away from the main cylinder, of the conical cylinder;
one end of the push rod extends into the containing cavity through the opening; and
the piston is arranged in the containing cavity and comprises a main body part and an extension part, the main body part is fixedly connected with the push rod, the extension part is connected to the surface of the main body part, which deviates from the push rod, and when the push rod moves towards the conical barrel, the extension part can extend into the conical cavity.
In an embodiment of the present invention, a fixing column is convexly disposed at an end of the push rod, a fixing hole is concavely disposed in the main body, and the fixing column is inserted into the fixing hole.
In an embodiment of the present invention, a limiting table is further disposed at an end of the fixing column, and the limiting table abuts against and limits the hole wall of the fixing hole.
In an embodiment of the present invention, the main body portion and the extension portion are in a circular arc transition.
In an embodiment of the present invention, the surface of the main body portion is further convexly provided with an extrusion strip, the extrusion strip is circumferentially arranged along the main body portion, and the extrusion strip is abutted against the cavity wall of the cavity.
In an embodiment of the present invention, the number of the pressing strips is plural, and the plural pressing strips are arranged at intervals along an axial direction of the main body portion.
In one embodiment of the present invention, the syringe has a volume of 1 ml.
In an embodiment of the present invention, the medical sterile syringe further includes a puncturing assembly, a connecting cylinder is further disposed on a side wall surface of the main cylinder, the connecting cylinder is located on an outer side of the tapered cylinder, the puncturing assembly is detachably connected to the connecting cylinder, and the puncturing assembly is further communicated with the liquid outlet.
In an embodiment of the present invention, the puncture assembly includes a puncture needle and a base, the base is detachably connected to the connecting cylinder and the conical cylinder, and the puncture needle is fixedly connected to the base and is communicated with the liquid outlet.
The medical sterile injector in the technical scheme of the utility model comprises a syringe, a push rod and a piston. Wherein, the needle cylinder comprises a main cylinder body and a conical cylinder, and the conical cylinder is used for connecting the puncture needle. The push rod extends into the containing cavity through the opening end of the main cylinder body and is connected with the piston, and the push rod is matched with the main cylinder body to form a limiting structure. When the liquid medicine sucking device is used, the push rod drives the piston to move towards one end far away from the conical cylinder so as to suck liquid medicine into the containing cavity. During injection, the push rod drives the piston to move towards the conical cylinder, at the moment, at least part of the structure of the piston can also stretch into the conical cavity to be detained in the conical cavity to push the liquid medicine to the liquid outlet, so as to avoid the waste of the liquid medicine. Compared with the prior art, the medical sterile syringe in the technical scheme of the utility model can reduce the liquid medicine residue in the needle cylinder in the conical cavity, avoid the waste of the liquid medicine and is beneficial to clinical popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a medical sterile injector according to an embodiment of the present invention;
FIG. 2 is an exploded view of the sterile syringe of FIG. 1;
FIG. 3 is a cross-sectional view of a medical sterile injector of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 3.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Medical |
20 | |
| 10 | Needle cylinder | 23 | Fixing column |
| 11 | |
231 | Limiting table |
| 111 | Containing |
30 | Piston |
| 113 | Opening of the |
31 | |
| 13 | |
311 | |
| 131 | |
313 | |
| 133 | |
33 | |
| 15 | Connecting |
40 | |
| 151 | Buckling position | 41 | |
| 17 | Handle (CN) |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a medical sterile injector 100.
Referring to fig. 1 to 4, a medical sterile injector 100 according to an embodiment of the present invention includes:
the needle cylinder 10 comprises a main cylinder body 11 and a conical cylinder 13, the conical cylinder 13 is connected to one end of the main cylinder body 11, a containing cavity 111 is formed inside the main cylinder body 11, one end, far away from the conical cylinder 13, of the main cylinder body 11 is provided with an opening 113, a conical cavity 131 is formed inside the conical cylinder 13, the conical cavity 131 is communicated with the containing cavity 111, and a liquid outlet 133 communicated with the conical cavity 131 is further formed at one end, far away from the main cylinder body 11, of the conical cylinder 13;
the push rod 20, one end of the push rod 20 extends into the cavity 111 through the opening 113; and
the piston 30 is arranged in the accommodating cavity 111 and connected with the push rod 20, the piston 30 is abutted against the cavity wall of the accommodating cavity 111, and when the push rod 20 moves towards the conical cylinder 13, part of the structure of the piston 30 can extend into the conical cavity 131.
The medical sterile injector 100 according to the present invention includes a syringe 10, a plunger 20, and a piston 30. The syringe 10 comprises a main cylinder 11 and a conical cylinder 13, wherein the conical cylinder 13 is used for connecting a puncture needle. The push rod 20 extends into the cavity 111 through the opening 113 end of the main cylinder 11 to be connected with the piston 30, and the push rod 20 is matched with the main cylinder 11 to form a limiting structure. In use, the push rod 20 drives the piston 30 to move towards an end away from the tapered barrel 13, so as to suck the liquid medicine into the cavity 111. During injection, the push rod 20 drives the piston 30 to move towards the tapered barrel 13, and at the moment, at least part of the structure of the piston 30 can also extend into the tapered cavity so as to push the liquid medicine retained in the tapered cavity to the liquid outlet 133, thereby avoiding the waste of the liquid medicine. Compared with the prior art, the medical sterile syringe 100 in the technical scheme of the utility model can reduce the liquid medicine residue in the needle cylinder 10 in the conical cavity, thereby avoiding the waste of the liquid medicine and being beneficial to clinical popularization and use.
It should be noted that the medical sterile injector 100 according to an embodiment of the present invention can be used for injecting various vaccines, such as new coronary pneumonia vaccine, other infectious disease vaccines, and the like. Through the improvement of the structure of the piston 30, the vaccines can be injected into the body of a user, the amount of the vaccines is ensured, and the effectiveness of the vaccines is guaranteed.
Specifically, referring to fig. 1 to 4, in an embodiment of the present invention, the piston 30 includes:
a main body 31, wherein the main body 31 is fixedly connected with the push rod 20; and
an extension 33, wherein the extension 33 is connected to a surface of the main body 31 facing away from the push rod 20, and when the push rod 20 moves towards the tapered barrel 13, the extension 33 can extend into the tapered cavity 131.
In the technical solution of an embodiment of the present invention, the piston 30 may be made of rubber or a soft material such as silica gel. The main body 31 is adapted to the cavity 111, and the extension 33 is adapted to the tapered cavity. The main body portion 31 and the extension portion 33 are integrally connected. Further, the main body portion 31 and the extension portion 33 are in a circular arc transition, that is, the cross-sectional dimension of the junction between the main body portion 31 and the extension portion 33 gradually decreases from the main body portion 31 to the extension portion 33. In this way, the reliability of the connection between the main body 31 and the extension 33 can be ensured, and the matching degree between the piston 30 and the inner space of the cylinder 10 can be improved, and the liquid medicine in the cylinder 10 can be completely pushed to the liquid outlet 133. The taper between the tapered cylinder 13 and the main cylinder 11 is 6:100, and similarly, the taper between the extension 33 and the main body 31 is 6: 100. Thus, not only the strength of the syringe 10 is ensured, but also the residual liquid medicine in the syringe 10 is reduced.
Further, referring to fig. 3, a fixing column 23 is convexly disposed at an end portion of the push rod 20, a fixing hole 311 is concavely disposed in the main body portion 31, and the fixing column 23 is inserted into the fixing hole 311.
In the technical solution of an embodiment of the present invention, there are various ways of fixing the push rod 20 and the piston 30. For example, the end of the push rod 20 is convexly provided with a fixing column 23, the piston 30 is correspondingly provided with a fixing hole 311, and the fixing column 23 is inserted into the fixing hole 311 to fix the piston 30 at the end of the push rod 20. Further, the outer diameter of the fixing post 23 is matched with the inner diameter of the fixing hole 311, and in some embodiments, the outer diameter of the fixing post 23 is smaller than the inner diameter of the fixing hole 311, so that the piston 30 and the fixing seat are tightly matched, and the firmness of the piston 30 and the fixing post 23 is improved. Further, the tip of fixed column 23 still is equipped with spacing platform 231, and the external diameter of this spacing platform 231 is greater than the external diameter of fixed column 23, and when the surface of fixed column 23 was located in the cover of piston 30, spacing platform 231 can restrict the relative push rod 20 activity setting of piston 30 to promote the fixed fastness of piston 30 and push rod 20.
Further, referring to fig. 3, in an embodiment of the present invention, an extrusion strip 313 is further protruded from a surface of the main body 31, the extrusion strip 313 is circumferentially disposed along the main body 31, and the extrusion strip 313 is disposed in abutment with a cavity wall of the receiving cavity 111.
In the technical solution of an embodiment of the present invention, the arrangement of the squeeze strip 313 may increase a contact area between the piston 30 and an inner wall surface of the cavity 111, so as to ensure sealing performance of the piston 30 and prevent air in an environment from entering the cavity 111 through the opening 113. Meanwhile, the medical fluid in the chamber 111 can be prevented from leaking out through the gap between the piston 30 and the chamber wall of the chamber 111. In an embodiment, the number of the pressing strips 313 is multiple, and the plurality of pressing strips 313 are arranged at intervals along the axial direction of the main body 31. In this way, the reliability of the seal between the piston 30 and the cylinder 10 can be further increased.
Referring to fig. 1, in one embodiment of the present invention, the syringe 10 has a volume of 1 ml.
In the technical scheme of an embodiment of the present invention, the volume of the medical sterile syringe 100 is 1ml, and by improving the structure of the piston 30, the piston 30 can completely send out the liquid medicine in the cavity 111 and the conical cavity through the liquid outlet 133, so as to avoid the liquid medicine from being retained in the conical cavity, which causes waste of the liquid medicine. The liquid medicine is not wasted, so that the vaccine can be completely injected into the body of a user, and the epidemic prevention effect of the vaccine is ensured. Further, the main cylinder 11 may be transparent to facilitate observation of the amount of the liquid in the cavity 111 and operation of medical workers. Furthermore, the surface of the main cylinder 11 is provided with volume graduation lines to further help the medical work observe the residual medicament in the volume.
Referring to fig. 1 to 3, in an embodiment of the present invention, the medical sterile injector 100 further includes a piercing assembly, a connecting cylinder 15 is further disposed on a side wall surface of the main cylinder 11, the connecting cylinder 15 is located outside the conical cylinder 13, the piercing assembly is detachably connected to the connecting cylinder 15, and the piercing assembly is further communicated with the liquid outlet 133.
In the technical scheme of an embodiment of the utility model, the puncture assembly comprises a base 40 and a puncture needle, wherein the base 40 and the puncture needle are of an integrated structure. The base 40 is a plastic material, the puncture needle is a metal material, and the puncture needle can be embedded into an integral structure in the injection molding process of the base 40. The lateral wall of base 40 is equipped with buckle 41, and the lateral wall of connecting cylinder 15 is equipped with detains position 151, and base 40 and the cooperation of buckle 41 realize base 40 and the removable of cylinder 10 to be connected between realization puncture subassembly and the cylinder 10. In one embodiment, the spike assembly and the barrel 10 may also be removably connected by threads, not to be taken to mention.
Further, the base 40 is accommodated in the space between the connecting cylinder 15 and the tapered cylinder 13, so that the reliability of fixing the base 40 to the cylinder 10 can be improved. The end of the main cylinder 11 away from the conical cylinder 13 is further provided with a handle 17, so that a user can conveniently hold the main cylinder with a hand, medicine can be conveniently sucked into the accommodating cavity 111, the medicine in the accommodating cavity 111 can be conveniently pushed to the liquid outlet 133, and the injection efficiency is improved.
In an embodiment of the present invention, the puncture assembly includes a puncture needle and a base 40, the base 40 is detachably connected to the connecting cylinder 15 and the tapered cylinder 13, and the puncture needle is fixedly connected to the base 40 and is communicated with the liquid outlet 133.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A sterile medical injector, comprising:
the needle cylinder comprises a main cylinder body and a conical cylinder, the conical cylinder is connected to one end of the main cylinder body, a containing cavity is formed inside the main cylinder body, one end, far away from the conical cylinder, of the main cylinder body is provided with an opening, a conical cavity is formed inside the conical cylinder and communicated with the containing cavity, and a liquid outlet communicated with the conical cavity is further formed at one end, far away from the main cylinder, of the conical cylinder;
one end of the push rod extends into the containing cavity through the opening; and
the piston is arranged in the containing cavity and comprises a main body part and an extension part, the main body part is fixedly connected with the push rod, the extension part is connected to the surface of the main body part, which deviates from the push rod, and when the push rod moves towards the conical barrel, the extension part can extend into the conical cavity.
2. The medical sterile injector according to claim 1, wherein a fixing post is convexly provided at an end of the push rod, a fixing hole is concavely provided at the main body part, and the fixing post is inserted into the fixing hole.
3. The medical sterile injector according to claim 2, wherein the end of the fixing column is further provided with a limiting table, and the limiting table abuts against and limits the wall of the fixing hole.
4. A sterile medical injector according to claim 1, wherein said body portion and said extension portion are radiused.
5. The medical sterile injector according to claim 1, wherein a squeezing strip is further convexly arranged on the surface of the main body part, the squeezing strip is circumferentially arranged along the main body part, and the squeezing strip is abutted against the cavity wall of the cavity.
6. A sterile medical injector according to claim 5, characterized in that the number of said squeeze strips is plural, and plural said squeeze strips are provided at intervals in the axial direction of said main body portion.
7. The sterile syringe for medical use according to claim 1, wherein the syringe has a volume of 1 ml.
8. A sterile medical injector according to any of claims 1 to 7, characterized in that it further comprises a piercing assembly, the side wall of said main cylinder body further comprises a connecting cylinder, said connecting cylinder is located outside said conical cylinder, said piercing assembly is detachably connected with said connecting cylinder, and said piercing assembly is further communicated with said liquid outlet.
9. A sterile medical injector according to claim 8, wherein said spike assembly includes a spike and a base, said base being removably connected to said connector and said conical barrel, said spike being fixedly connected to said base and communicating with said fluid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120653464.8U CN215653115U (en) | 2021-03-31 | 2021-03-31 | Medical sterile syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120653464.8U CN215653115U (en) | 2021-03-31 | 2021-03-31 | Medical sterile syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215653115U true CN215653115U (en) | 2022-01-28 |
Family
ID=79969787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120653464.8U Active CN215653115U (en) | 2021-03-31 | 2021-03-31 | Medical sterile syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215653115U (en) |
-
2021
- 2021-03-31 CN CN202120653464.8U patent/CN215653115U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |