CN216061308U - Accurate quantitative syringe of bacterin - Google Patents
Accurate quantitative syringe of bacterin Download PDFInfo
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- CN216061308U CN216061308U CN202122043400.9U CN202122043400U CN216061308U CN 216061308 U CN216061308 U CN 216061308U CN 202122043400 U CN202122043400 U CN 202122043400U CN 216061308 U CN216061308 U CN 216061308U
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- inner cylinder
- liquid medicine
- piston head
- cylinder
- injection
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Abstract
The utility model relates to the technical field of medical instruments, and discloses an accurate quantitative vaccine injector, which comprises: the injection device comprises an inner cylinder, an injection rod and a quantitative part, wherein one end of the inner cylinder is provided with an injection needle communicated with the inner cylinder; one end of the injection rod is fixedly provided with a piston head, the piston head is in sealing contact with the inner cylinder, and the injection rod can drive the piston head to make reciprocating linear movement in the inner cylinder and extract liquid medicine to the inner cylinder through the injection needle or inject the liquid medicine from the inner cylinder to the outside; when the inner cylinder extracts the liquid medicine through the injection needle to reach the specified liquid medicine or the inner cylinder injects the liquid medicine through the injection needle to reach the specified liquid medicine, the quantifying component is used for stopping the piston head from sliding in the inner cylinder and increasing the pushing force or the pulling force of the injection rod to enable the piston head to continuously slide in the inner cylinder; the precise quantitative vaccine injector provided by the utility model is convenient for medical staff to draw and inject liquid medicine precisely and quantitatively when the medical staff uses the patient or the patient injects the liquid medicine by himself.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an accurate quantitative vaccine injector.
Background
Be used for vaccination usually all to need accurate ration, but current syringe ration injection needs medical personnel to control through the scale on the syringe, but medical personnel when tired, probably inaccurate to the observation of scale, unable accurate ration injection to influence the bacterin injection effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an accurate quantitative vaccine injector, which aims to solve the problems in the prior art and is convenient for medical staff to accurately and quantitatively extract and inject liquid medicine when the medical staff uses a patient or the patient injects the liquid medicine by himself.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides an accurate quantitative injector of vaccine, comprising: one end of the inner cylinder is provided with an injection needle communicated with the inner cylinder; the injection rod is fixedly provided with a piston head at one end, the piston head is in sealing contact with the inner cylinder, and the injection rod can drive the piston head to make reciprocating linear movement in the inner cylinder and extract liquid medicine to the inner cylinder through the injection needle or inject the liquid medicine from the inner cylinder to the outside; and the quantitative component is used for stopping the piston head from sliding in the inner barrel and enabling the piston head to continuously slide in the inner barrel by increasing the pushing force or the pulling force of the injection rod when the inner barrel extracts the liquid medicine through the injection needle to reach the specified liquid medicine or the inner barrel injects the liquid medicine through the injection needle to reach the specified liquid medicine.
Preferably, the dosing member comprises an annular groove and an annular protrusion;
the inner wall surface of the inner cylinder is provided with the annular groove, and the circumferential surface of the piston head is provided with the annular bulge matched with the annular groove; the annular groove is arranged at a designated position, so that when the piston head moves in the inner barrel to the annular protrusion is embedded into the annular groove, designated liquid medicine is just extracted or injected in the inner barrel.
Preferably, the number of the annular grooves is set to one; when the inner cylinder extracts liquid medicine, the piston head moves to the annular bulge to be embedded into the annular groove, and quantitative extraction is completed.
Preferably, the number of the annular grooves is set to be a plurality, and the plurality of the annular grooves are arranged at intervals along the axial direction of the inner cylinder.
Preferably, the edges of the annular groove and the annular protrusion are sloped.
Preferably, the annular bulge is made of medical silicon rubber, and the inner cylinder is made of medical polypropylene.
Preferably, the injection needle further comprises an outer cylinder, the outer cylinder is coaxially sleeved on the outer peripheral surface of the inner cylinder, one end of the outer cylinder is a necking section, and the injection needle head is used for extending out of the outer cylinder through the necking section; the outer barrel is made of dark materials, and a transparent observation window is formed in the outer barrel.
Preferably, the outer cylinder is connected with the inner cylinder in an axial sliding mode.
Preferably, the inner wall surface of the outer cylinder is provided with a sliding groove arranged along the axial direction, and the outer wall surface of the inner cylinder is fixedly provided with a sliding block which can slide in the sliding groove so as to enable the outer cylinder and the inner cylinder to slide relatively.
Preferably, the outer wall surface of the inner cylinder is provided with a sliding groove arranged along the axial direction, the outer wall surface of the outer cylinder is fixedly provided with a sliding block, and the sliding block can slide in the sliding groove to enable the outer cylinder and the inner cylinder to slide relatively.
Compared with the prior art, the utility model has the following technical effects:
the utility model provides an accurate quantitative injector of vaccine, which pushes a piston head to slide in an inner cylinder through an injection rod, so that the inner cylinder absorbs or injects liquid medicine through an injection needle, and when the amount of liquid medicine absorbed in the inner cylinder reaches the specified amount of liquid medicine for one-time injection, a quantitative part stops the piston head from sliding in the inner cylinder, so that the sliding resistance of the piston head in the inner cylinder is increased; if the injection is carried out, the sliding limitation of the quantitative component on the piston head is removed by only increasing the pushing force on the injection rod, and if the liquid medicine is continuously sucked, the sliding limitation of the quantitative component on the piston head is removed by increasing the pulling force on the injection rod; when the inner barrel absorbs the liquid medicine for multiple injections, when the first injection reaches the specified liquid medicine, the quantitative part stops the piston head from sliding in the inner barrel, so that the sliding resistance of the piston head in the inner barrel is increased, and if the second injection is carried out, the thrust on the injection rod is increased to remove the sliding limitation of the quantitative part on the piston head; therefore, the utility model completes the accurate quantitative injection of the liquid medicine by the change of the acting force applied to the injection rod by the user.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of an injection rod and a piston head according to one embodiment;
FIG. 2 is a front view of the inner barrel provided in accordance with one embodiment;
FIG. 3 is a schematic structural diagram of an inner barrel according to an embodiment;
FIG. 4 is a front view of the outer barrel according to the first embodiment;
FIG. 5 is a right side view of the outer barrel according to the first embodiment;
fig. 6 is a schematic structural diagram of an inner cylinder according to the second embodiment.
Icon: 1-precise quantitative injector of vaccine; 11-an inner cylinder; 111-an annular groove; 112-a chute; 12-an injection needle; 13-an injection rod; 14-a piston head; 141-an annular projection; 15-outer cylinder; 151-a necking section; 152-a transparent viewing window; 153-slide block.
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.
The utility model aims to provide an accurate quantitative vaccine injector, which solves the problems in the prior art and is convenient for medical staff or patients to accurately quantify liquid medicine during self-injection.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
The present embodiment provides a precise quantitative vaccine injector 1, please refer to fig. 1-3, which includes an inner cylinder 11, an injection rod 13 and a quantitative component; one end of the inner cylinder 11 is provided with an injection needle 12 communicated with the inner cylinder 11; one end of the injection rod 13 is fixedly provided with a piston head 14, the piston head 14 is in sealing contact with the inner cylinder 11, and the injection rod 13 can drive the piston head 14 to do reciprocating linear movement in the inner cylinder 11 and draw liquid medicine to the inner cylinder 11 through the injection needle 12 or inject the liquid medicine outwards from the inner cylinder 11; when the inner barrel 11 extracts the liquid medicine through the injection needle 12 to reach the specified liquid medicine or the inner barrel 11 injects the liquid medicine through the injection needle 12 to reach the specified liquid medicine, the quantitative component is used for stopping the piston head 14 from sliding in the inner barrel 11, and the piston head 14 can continuously slide in the inner barrel 11 by increasing the pushing force or the pulling force of the injection rod 13.
The piston head 14 is pushed to slide in the inner barrel 11 through the injection rod 13, so that the inner barrel 11 sucks or injects liquid medicine through the injection needle 12, and when the liquid medicine sucking amount in the inner barrel 11 reaches the specified primary liquid medicine injection amount, the quantitative part stops the piston head 14 from sliding in the inner barrel 11, so that the sliding resistance of the piston head 14 in the inner barrel 11 is increased; if the injection is carried out, the sliding limitation of the piston head 14 by the quantitative component is removed by increasing the pushing force on the injection rod 13, and if the liquid medicine is continuously sucked, the sliding limitation of the piston head 14 by the quantitative component is removed by increasing the pulling force on the injection rod 13; the syringe provided by the embodiment senses the change of the force applied to the injection rod 13 by a user so as to complete the accurate quantitative injection of the liquid medicine.
In an alternative of this embodiment, it is preferable that the quantitative means includes an annular groove 111 and an annular projection 141; referring to fig. 1 and 3, an annular groove 111 is formed on the inner wall surface of the inner cylinder 11, and an annular protrusion 141 adapted to the annular groove 111 is formed on the circumferential surface of the piston head 14; the annular groove 111 is disposed at a designated position, specifically, the annular groove 111 can be disposed at 0.5ml or 1.0ml according to the requirement of injecting the liquid medicine, so that when the piston head 14 moves in the inner cylinder 11 to the annular protrusion 141 is inserted into the annular groove 111, the inner cylinder 11 can just extract the designated liquid medicine amount.
In the alternative of this embodiment, preferably, referring to fig. 3, the number of the annular grooves 111 is set to one; when the liquid medicine is extracted from the inner barrel 11, the piston head 14 moves to the annular protrusion 141 to be embedded into the annular groove 111, and quantitative extraction is completed; the annular groove 111 can be arranged at 0.5ml or 1.0ml according to the requirement of liquid medicine injection, when the annular protrusion 141 on the piston head 14 is embedded into the annular groove 111, the liquid medicine amount in the inner barrel 11 reaches the specified liquid medicine amount, and when the liquid medicine injection is carried out, the pushing force on the injection rod 13 is increased, so that the annular protrusion 141 slides out of the annular groove 111, and the injection is carried out.
In the alternative of this embodiment, it is preferable that the edges of the annular groove 111 and the annular protrusion 141 are sloped; the annular protrusion 141 can slide out of the annular groove 111 conveniently, and the annular protrusion 141 is prevented from being stuck in the annular groove 111.
In the alternative of this embodiment, it is preferable that the annular protrusion 141 is made of medical silicone rubber, which is soft material to facilitate the sliding seal of the piston head 14 in the inner tube 11; the inner cylinder 11 is made of medical polypropylene; has good biocompatibility and is convenient for auxiliary observation by transparent materials.
In an alternative of this embodiment, please refer to fig. 4 and 5, it is preferable that the injection needle further includes an outer cylinder 15, the outer cylinder 15 is coaxially sleeved on the outer circumferential surface of the inner cylinder 11, one end of the outer cylinder 15 is a necking section 151, and the injection needle 12 is configured to extend out of the outer cylinder 15 through the necking section 151; the outer cylinder 15 is made of a dark material, so that the needle-sick phenomenon of a patient is relieved to a certain extent; and the outer cylinder 15 is provided with a transparent observation window 152, which is convenient for a user to observe whether bubbles are completely discharged when the inner cylinder 11 sucks the liquid medicine.
In the alternative of this embodiment, it is preferable that the outer cylinder 15 is axially slidably connected to the inner cylinder 11, and the injection needle 12 can be temporarily received in the outer cylinder 15 after the medical fluid in the inner cylinder 11 is completely withdrawn or before the syringe is unsealed, so as to provide a certain protection effect.
Further, as to the manner of the sliding connection, specifically:
mode one (not shown): the inner wall surface of the outer cylinder 15 is provided with a sliding groove which is arranged along the axial direction, the outer wall surface of the inner cylinder 11 is fixedly provided with a sliding block, and the sliding block can slide in the sliding groove to enable the outer cylinder 15 and the inner cylinder 11 to slide relatively.
The second method comprises the following steps: referring to fig. 2 and 5, the outer wall surface of the inner cylinder 11 is provided with a sliding slot 112 arranged along the axial direction, the inner wall surface of the outer cylinder 15 is fixedly provided with a sliding block 153, and the sliding block 153 can slide in the sliding slot 112 to enable the outer cylinder 15 and the inner cylinder 11 to slide relatively.
The number of the sliding grooves 112 and the number of the sliding blocks 153 may be more than one, for example, 4, and the sliding grooves and the sliding blocks may be uniformly distributed in the circumferential direction.
Example two
The precise quantitative vaccine injector 1 provided in this embodiment is different from the first embodiment only in that: the number of the annular grooves 111 is multiple, and the plurality of annular grooves 111 are arranged at intervals along the axial direction of the inner cylinder 11; specifically, referring to fig. 6, the number of the annular grooves 111 can be set to 2, and the two annular grooves 111 can be located at 0.5ml and 1ml, which is suitable for the situation that multiple times of quantitative injection is needed, when the inner barrel 11 has absorbed the liquid medicine amount for multiple times of injection, when the first time of injection reaches the specified liquid medicine amount, the annular protrusion 141 of the piston head 14 is embedded in the annular groove 111 and stops sliding in the inner barrel 11, so that the sliding resistance of the piston head 14 in the inner barrel 11 is increased, and if the second time of injection is performed, the thrust on the injection rod 13 is increased to remove the sliding limitation of the quantitative component on the piston head 14; thus, the present embodiment can accomplish multiple precise injections of a liquid medicine by the user sensing the change of the force applied to the injection rod.
The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (10)
1. An accurate quantitative syringe of bacterin which characterized in that: the method comprises the following steps:
an inner cylinder (11), wherein one end of the inner cylinder (11) is provided with an injection needle (12) communicated with the inner cylinder (11);
the injection rod (13), one end of the injection rod (13) is fixedly provided with a piston head (14), the piston head (14) is in sealing contact with the inner cylinder (11), and the injection rod (13) can drive the piston head (14) to make reciprocating linear movement in the inner cylinder (11) and extract liquid medicine to the inner cylinder (11) through the injection needle (12) or inject the liquid medicine outwards from the inner cylinder (11); and
the quantitative component is used for stopping the piston head (14) from sliding in the inner barrel (11) when the inner barrel (11) extracts the liquid medicine through the injection needle (12) and the liquid medicine is injected into the inner barrel (11) through the injection needle (12) and reaches the specified liquid medicine, and the piston head (14) can continuously slide in the inner barrel (11) by increasing the pushing force or the pulling force of the injection rod (13).
2. The precise vaccine quantifying syringe according to claim 1, wherein: the dosing member comprises an annular groove (111) and an annular protrusion (141);
the inner wall surface of the inner cylinder (11) is provided with the annular groove (111), and the circumferential surface of the piston head (14) is provided with the annular bulge (141) matched with the annular groove (111); the annular groove (111) is arranged at a designated position, so that when the piston head (14) moves in the inner barrel (11) until the annular protrusion (141) is embedded in the annular groove (111), a designated liquid medicine amount is just extracted or injected in the inner barrel (11).
3. The precise vaccine dosing syringe of claim 2, wherein: the number of the annular grooves (111) is set to be one; when liquid medicine is extracted from the inner cylinder (11), the piston head (14) moves to the annular protrusion (141) to be embedded into the annular groove (111), and the liquid medicine is extracted quantitatively.
4. The precise vaccine dosing syringe of claim 2, wherein: the number of the annular grooves (111) is set to be a plurality, and the annular grooves (111) are arranged at intervals along the axial direction of the inner barrel (11).
5. The precise vaccine dosing syringe of claim 2, wherein: the edges of the annular groove (111) and the annular bulge (141) are slope surfaces.
6. The precise vaccine dosing syringe of claim 2, wherein: the annular bulge (141) is made of medical silicon rubber, and the inner cylinder (11) is made of medical polypropylene.
7. The precise vaccine quantifying syringe according to claim 1, wherein: the injection needle further comprises an outer cylinder (15), the outer cylinder (15) is coaxially sleeved on the outer peripheral surface of the inner cylinder (11), one end of the outer cylinder (15) is a necking section (151), and the injection needle (12) is used for extending out of the outer cylinder (15) through the necking section (151); the outer cylinder (15) is made of dark materials, and a transparent observation window (152) is formed in the outer cylinder (15).
8. The precise vaccine dosing syringe of claim 7, wherein: the outer cylinder (15) is connected with the inner cylinder (11) in a sliding mode along the axial direction.
9. The precise vaccine quantifying syringe according to claim 8, wherein: the inner wall surface of the outer cylinder (15) is provided with a sliding groove which is arranged along the axial direction, the outer wall surface of the inner cylinder (11) is fixedly provided with a sliding block, and the sliding block can slide in the sliding groove to enable the outer cylinder (15) and the inner cylinder (11) to slide relatively.
10. The precise vaccine quantifying syringe according to claim 8, wherein: the outer wall surface of the inner cylinder (11) is provided with a sliding groove (112) which is arranged along the axial direction, the inner wall surface of the outer cylinder (15) is fixedly provided with a sliding block (153), and the sliding block (153) can slide in the sliding groove (112) to enable the outer cylinder (15) and the inner cylinder (11) to slide relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122043400.9U CN216061308U (en) | 2021-08-27 | 2021-08-27 | Accurate quantitative syringe of bacterin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122043400.9U CN216061308U (en) | 2021-08-27 | 2021-08-27 | Accurate quantitative syringe of bacterin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216061308U true CN216061308U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122043400.9U Active CN216061308U (en) | 2021-08-27 | 2021-08-27 | Accurate quantitative syringe of bacterin |
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| Country | Link |
|---|---|
| CN (1) | CN216061308U (en) |
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2021
- 2021-08-27 CN CN202122043400.9U patent/CN216061308U/en active Active
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