CN216877460U - Needleless injector for pre-filling - Google Patents
Needleless injector for pre-filling Download PDFInfo
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- CN216877460U CN216877460U CN202123048146.8U CN202123048146U CN216877460U CN 216877460 U CN216877460 U CN 216877460U CN 202123048146 U CN202123048146 U CN 202123048146U CN 216877460 U CN216877460 U CN 216877460U
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Abstract
A needle-free injector for pre-filling is characterized in that one end of an injector tube is a liquid outlet end, an injector push rod is arranged at the other end of the injector tube, a rubber piston is arranged at the end part of the injector push rod in the injector tube, the injector tube and the injector push rod are arranged on a support, a protective cap is arranged at the liquid outlet end of the injector tube, liquid medicine is filled in the injector tube, a first positioning boss and a first clamping groove are machined on the outer side wall of one end, close to the injector push rod, of the injector tube, a second clamping groove and a second positioning boss are machined on the injector push rod, protective frames are arranged on the first clamping groove and the second clamping groove and fix the injector tube and the injector push rod, and the first positioning boss on the injector tube and the second positioning boss on the injector push rod are clamped on the support. The utility model does not need to be matched with a needle head and a converter for use, so that the patient can realize quick injection, and meanwhile, the liquid medicine is dispersed and distributed in the body after the patient is injected, thereby improving the absorption efficiency.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a needle-free injector for pre-filling.
Background
For patients who need to be treated by injecting medicines every day, such as patients with diabetes and the like, most of the patients adopt a method of needle injection; despite the development of needleless injection, each injection requires, for elderly patients, particularly elderly patients of an advanced age: firstly, introducing the medicine into a needleless injector (a needleless injection ampoule bottle) from a medicine storage bottle for storing the medicine through a transfer mechanism with a needle, secondly, controlling the accurate dosage of the introduced medicine liquid, thirdly, removing air in the injector after the medicine introduction is finished, and fourthly, installing the needleless injector (the needleless injection ampoule bottle) into an injection mechanism after the air exhaust is finished; the steps seem to be a continuous careless action, but actually are delicate operation actions, but the eyesight of the middle-aged and the elderly patients, especially the elderly patients with the older ages, is mostly not good, the delicate actions are much more flexible, the steps are an action which can not be completed by the middle-aged and the elderly patients, and the middle-aged and the elderly patients need an injection mode which is simpler and more convenient to operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the conventional needleless injector and provide the needleless injector for pre-filling, which has the advantages of reasonable design, small volume and simplicity in operation.
The technical scheme for solving the technical problems is as follows: the utility model provides a needleless injector for prefilling, the one end of syringe pipe is for going out the liquid hole end, the other end is provided with the syringe push rod, and the tip that is located syringe intraductal syringe push rod is provided with rubber piston, its characterized in that: the injection device comprises an injection tube, an injection push rod, a protective cap, a first clamping groove, a second positioning boss, a protection frame, a first positioning boss and a second positioning boss, wherein the injection tube and the injection push rod are arranged on a support, the protective cap is arranged at the liquid outlet end of the injection tube, liquid medicine is filled in the injection tube, the first positioning boss and the first clamping groove are machined on the outer side wall of one end, close to the injection push rod, of the injection tube, the second clamping groove and the second positioning boss are machined on the injection push rod, the protection frame is arranged on the first clamping groove and the second clamping groove, the injection tube and the injection push rod are fixed through the protection frame, and the first positioning boss on the injection tube and the second positioning boss on the injection push rod are clamped on the support.
As a preferable technical scheme, the liquid outlet hole of the injector tube is formed by connecting a first circular truncated cone-shaped hole, a second circular truncated cone-shaped hole and a cylindrical injection micropore which are coaxial from inside to outside into a whole, the inner diameter of the large end of the first circular truncated cone-shaped hole is the same as the inner diameter of the tube body of the injector tube, the inner diameter of the small end of the first circular truncated cone-shaped hole is the same as the inner diameter of the large end of the second circular truncated cone-shaped hole, and the inner diameter of the small end of the second circular truncated cone-shaped hole is the same as the inner diameter of the cylindrical injection micropore.
As a preferred technical scheme, the length of the cylindrical micropores is 2-4 mm, and the inner diameter of the cylindrical micropores is 0.1-0.2 mm.
As a preferable technical scheme, the protective cap is a rubber cap, a sealing groove matched with the liquid outlet end of the syringe tube is formed in the inner end face of the protective cap, uniformly distributed convex blocks are arranged in the circumferential direction on the inner side wall, a circumferential mounting groove is formed in the outer side wall of the liquid outlet end of the syringe tube, the convex blocks of the protective cap are buckled in the mounting groove of the syringe tube, and the liquid outlet end of the syringe tube extends into the sealing groove of the protective cap.
As a preferred technical solution, the rubber piston has a structure that: one end is a conical body, the middle part is a sealing brush ring, the other end is a cylindrical body connected with the injector push rod, the diameter of the large end of the conical body is the same as the outer diameter of the sealing brush ring, and the outer diameter of the sealing brush ring is the same as the outer diameter of the cylinder.
As an optimized technical scheme, the inner diameter of the syringe tube body is 3-6 mm, and the wall thickness is 2.5-3 mm.
The utility model has the following beneficial effects:
the liquid outlet hole is formed by connecting a first circular truncated cone-shaped hole, a second circular truncated cone-shaped hole and a cylindrical injection micropore which are coaxial from inside to outside, the use of a needle head and a converter is not needed, a patient can realize quick injection, and meanwhile, liquid medicine is dispersed and distributed in the body after the patient injects the liquid medicine, so that the absorption efficiency is improved. The utility model has the advantages of small volume, simple operation and strong practicability.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a schematic structural view of the stent 3 of the present invention.
Fig. 4 is a schematic structural view of the protection frame 4 of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and examples, but the present invention is not limited to the embodiments described below.
Example 1
In fig. 1 to 4, the needleless injector for pre-filling of the present embodiment is formed by connecting a protection cap 1, an injector tube 2, a support 3, a protection frame 4, an injector push rod 5 and a rubber piston 6,
the support 3 is provided with an injector tube 2 and an injector push rod 5, one end of the injector tube 2 is a liquid outlet end, the other end is provided with the injector push rod 5, the inner diameter of the tube body of the injector tube 2 is 5mm, the wall thickness is 2.7mm, the liquid outlet hole of the injector tube 2 is formed by connecting a first circular truncated cone-shaped hole, a second circular truncated cone-shaped hole and a cylindrical injection micropore which are coaxial from inside to outside, the inner diameter of the large end of the first circular truncated cone-shaped hole is the same as the inner diameter of the tube body of the injector tube 2, the inner diameter of the small end of the first circular truncated cone-shaped hole is the same as the inner diameter of the large end of the second circular truncated cone-shaped hole, the inner diameter of the small end of the second circular truncated cone-shaped hole is the same as the inner diameter of the cylindrical injection micropore, the length of the cylindrical injection micropore is 3mm, the inner diameter is 0.15mm, the liquid outlet end of the injector tube 2 is provided with a protective cap 1 made of rubber, the inner end face of the injector tube 1 is provided with a sealing groove matched with the liquid outlet end of the injector tube 2, and evenly distributed convex blocks are arranged in the circumferential direction on the inner side wall, the outer side wall of the liquid outlet end of the injector tube 2 is processed with a circumferential mounting groove, a convex block of the protective cap 1 is buckled in the mounting groove of the injector tube 2, the liquid outlet end of the injector tube 2 extends into a sealing groove of the protective cap 1 and is used for sealing the liquid outlet hole of the injector tube 2, the injector tube 2 is pre-filled with liquid medicine, a rubber piston 6 is arranged at the end part of an injector push rod 5 in the injector tube 2, the front end of the rubber piston 6 is a conical body, the middle part of the rubber piston is a sealing brush ring, the rear end of the rubber piston is a cylindrical body connected with the injector push rod 5, the diameter of the large end of the conical body is the same as the outer diameter of the sealing brush ring, the outer diameter of the sealing brush ring and the outer diameter of the cylindrical body are the same as the inner diameter of the injector tube 2, the tail end of the injector push rod 5 is in a gourd shape and is used for connecting with an injection mechanism, a first positioning boss 2-1 and a first clamping groove are processed on the outer side wall of one end of the injector tube 2 close to the injector push rod 5, the middle part of the syringe push rod 5 is provided with a second clamping groove, the tail end of the syringe push rod 5 is provided with a second positioning boss, the first clamping groove and the second clamping groove are provided with a protective frame 4, the protective frame 4 is used for fixing the syringe tube 2 and the syringe push rod 5 to prevent the syringe push rod 5 in transportation from shifting and spraying out liquid medicine, and the first positioning boss 2-1 on the syringe tube 2 and the second positioning boss 5-1 on the syringe push rod 5 are respectively clamped on the bracket 3 to prevent the syringe tube 2 and the syringe push rod 5 from shaking in transportation.
Because the liquid medicine of the utility model is prepackaged in the syringe tube 2, during injection, take down the support 3 and the fender bracket 4 to install the utility model on the injection mechanism, then take down the protective cap 1 to expose the injection micropore, press the switch of the injection mechanism, the injection mechanism pushes the syringe push rod 5, the syringe push rod 5 pushes the rubber piston 6, the rubber piston 6 pushes the liquid medicine to pass through the injection micropore rapidly, enter the body in a spray shape, finish the injection process, take down the syringe, discard and finish the operation.
Example 2
In this embodiment, install syringe pipe 2 and syringe push rod 5 on the support 3, syringe pipe 2 one end is the liquid outlet end, syringe push rod 5 is installed to the other end, the internal diameter of syringe pipe 2 body is 3mm, the wall thickness is 2.5mm, the liquid outlet hole of syringe pipe 2 is from inside to outside by coaxial first round platform hole, the second round platform hole, cylindrical injection micropore constitutes as an organic whole, the main aspects internal diameter in first round platform hole is the same with the body internal diameter of syringe pipe 2, the tip internal diameter is the same with the main aspects internal diameter in second round platform hole, the tip internal diameter in second round platform hole is the same with the internal diameter in cylindrical injection micropore, cylindrical injection micropore's length is 2mm, the internal diameter is 0.1 mm. The other components and the connection relationship of the components are the same as those in embodiment 1.
Example 3
In this embodiment, install syringe pipe 2 and syringe push rod 5 on the support 3, syringe pipe 2 one end is the liquid outlet end, syringe push rod 5 is installed to the other end, the internal diameter of syringe pipe 2 body is 6mm, the wall thickness is 3mm, the liquid outlet of syringe pipe 2 is from inside to outside by coaxial first round platform shape hole, second round platform hole, cylindrical injection micropore constitutes as an organic whole, the main aspects internal diameter in first round platform shape hole is the same with the body internal diameter of syringe pipe 2, the tip internal diameter is the same with the main aspects internal diameter in second round platform hole, the tip internal diameter in second round platform hole is the same with the internal diameter in cylindrical injection micropore, cylindrical injection micropore's length is 4mm, the internal diameter is 0.2 mm. The other components and the connection relationship of the components are the same as those in embodiment 1.
Claims (6)
1. The utility model provides a needleless injector for prefilling, the one end of syringe pipe (2) is provided with syringe push rod (5) for going out liquid hole end, the other end, and the tip that is located syringe push rod (5) in syringe pipe (2) is provided with rubber piston (6), its characterized in that: the injection syringe comprises a syringe tube (2) and a syringe push rod (5), wherein the syringe tube (2) and the syringe push rod (5) are arranged on a support (3), a protective cap (1) is arranged at the liquid outlet end of the syringe tube (2), liquid medicine is filled in the syringe tube (2), a first positioning boss (2-1) and a first clamping groove are processed on the outer side wall of one end, close to the syringe push rod (5), of the syringe tube (2), a second clamping groove and a second positioning boss (5-1) are processed on the syringe push rod (5), a protective frame (4) is arranged on the first clamping groove and the second clamping groove, the syringe tube (2) and the syringe push rod (5) are fixed by the protective frame (4), and the first positioning boss (2-1) on the syringe tube (2) and the second positioning boss (5-1) on the syringe push rod (5) are clamped on the support (3).
2. The needle-free syringe for prefilling of claim 1, wherein: the liquid outlet hole of the injector pipe (2) is formed by connecting a first circular truncated cone-shaped hole, a second circular truncated cone-shaped hole and a cylindrical injection micropore which are coaxial from inside to outside into a whole, the inner diameter of the large end of the first circular truncated cone-shaped hole is the same as the inner diameter of the pipe body of the injector pipe (2), the inner diameter of the small end of the first circular truncated cone-shaped hole is the same as the inner diameter of the large end of the second circular truncated cone-shaped hole, and the inner diameter of the small end of the second circular truncated cone-shaped hole is the same as the inner diameter of the cylindrical injection micropore.
3. The needle-free syringe for prefilling of claim 2, wherein: the length of the cylindrical micropores is 2-4 mm, and the inner diameter of the cylindrical micropores is 0.1-0.2 mm.
4. The needle-free syringe for prefilling of claim 1, wherein: the protective cap (1) is a rubber cap, a sealing groove matched with the liquid outlet end of the injector tube (2) is formed in the inner end face of the protective cap (1), uniformly distributed convex blocks are arranged in the circumferential direction on the inner side wall, a circumferential mounting groove is machined in the outer side wall of the liquid outlet end of the injector tube (2), the convex blocks of the protective cap (1) are buckled in the mounting groove of the injector tube (2), and the liquid outlet end of the injector tube (2) extends into the sealing groove of the protective cap (1).
5. The needleless injector for pre-filling according to claim 1, characterized in that said rubber piston (6) is structured as follows: one end is a conical body, the middle part is a sealing brush ring, the other end is a cylindrical body connected with a syringe push rod (5), the diameter of the large end of the conical body is the same as the outer diameter of the sealing brush ring, and the outer diameter of the sealing brush ring is the same as the outer diameter of the cylinder.
6. The needle-free syringe for prefilling of claim 1, wherein: the inner diameter of the syringe tube (2) body is 3-6 mm, and the wall thickness is 2.5-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123048146.8U CN216877460U (en) | 2021-12-07 | 2021-12-07 | Needleless injector for pre-filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123048146.8U CN216877460U (en) | 2021-12-07 | 2021-12-07 | Needleless injector for pre-filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216877460U true CN216877460U (en) | 2022-07-05 |
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ID=82205096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123048146.8U Active CN216877460U (en) | 2021-12-07 | 2021-12-07 | Needleless injector for pre-filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216877460U (en) |
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2021
- 2021-12-07 CN CN202123048146.8U patent/CN216877460U/en active Active
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