CN213220067U - Injection needle and injector - Google Patents
Injection needle and injector Download PDFInfo
- Publication number
- CN213220067U CN213220067U CN202020607827.XU CN202020607827U CN213220067U CN 213220067 U CN213220067 U CN 213220067U CN 202020607827 U CN202020607827 U CN 202020607827U CN 213220067 U CN213220067 U CN 213220067U
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- China
- Prior art keywords
- needle
- liquid channel
- transparent tube
- tube
- filtration membrane
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses an injection needle and syringe, injection needle include the needle file and install the needle tubing on the needle file, are provided with liquid channel in the needle file, and the needle tubing is linked together with liquid channel, is provided with filtration membrane in the liquid channel, liquid channel's perisporium on have an annular step face, liquid channel in be provided with a clamping ring, a surface and the annular step face of filtration membrane sticiss the cooperation, another surface and the clamping ring of filtration membrane sticiss the cooperation. The utility model discloses make filtration membrane fixed firm.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically a syringe needle and syringe.
Background
The syringe generally includes a barrel, a piston slidably disposed in the barrel, a push rod connected to the piston, and an injection needle mounted at a front end of the barrel.
Because probably contain impurity in the injection medicine, so will set up filtration membrane on some syringe needles at present to after filtering the injection medicine, the rethread syringe needle is injected into the human body, however, present filtration membrane is fixed insecure, and filtration membrane easy compression deformation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an injection needle and an injector are provided, which enable a filtering membrane to be fixed firmly.
In order to solve the technical problem, the utility model provides an injection needle, it includes the needle file and installs the needle tubing on the needle file, is provided with liquid channel in the needle file, and the needle tubing is linked together with liquid channel, is provided with filtration membrane in the liquid channel, the perisporium of liquid channel on have an annular step face, liquid channel in be provided with a clamping ring, filtration membrane's a surface and annular step face sticiss the cooperation, filtration membrane's another surface and compression ring sticiss the cooperation;
the pressing ring is in interference fit with the peripheral wall of the liquid channel;
the liquid passage in be provided with a plurality of supporting shoe, a plurality of supporting shoe is evenly distributed around the axis circumference of needle tubing, the one end of a plurality of supporting shoe all is fixed mutually with the needle file, the other end of a plurality of supporting shoe all offsets with a surface towards the needle tubing of filtration membrane.
Preferably, the needle tube on fixed cover put a lantern ring, many spinal branchs vaulting pole around needle tube circumference evenly distributed, the one end of many spinal branchs vaulting pole all is connected with the lantern ring, the other end of many spinal branchs vaulting pole all is connected with the needle file.
Preferably, a transparent tube is arranged on the outer wall of the needle base, one end of the transparent tube is open, the other end of the transparent tube is closed, the open end of the transparent tube is fixed on the outer wall of the needle base, a through hole for communicating the inside of the transparent tube with the liquid channel is formed in the needle base, a piston and a pressure spring which can slide along the axis direction of the transparent tube are arranged in the transparent tube, one end of the pressure spring abuts against the closed end of the transparent tube, and the other end of the pressure spring abuts against a surface of the piston, which deviates from the through hole.
In order to solve the technical problem, the utility model provides an injector, it includes foretell syringe needle.
After the structure more than adopting, compared with the prior art, the utility model, have following advantage:
the utility model discloses an among the syringe needle, a surface and the annular step face of filtration membrane sticiss the cooperation, and another surface and the clamping ring of filtration membrane sticiss the cooperation, that is to say the clamping ring compresses tightly filtration membrane and fixes on annular step face to make filtration membrane fixed firm.
And support filter membrane through a plurality of supporting shoe to make filter membrane be difficult to the pressurized deformation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an enlarged view of the area a in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in figures 1 and 2, the injection needle of the utility model comprises a needle base 10 and a needle tube 20 arranged on the needle base 10, the needle tube 20 is arranged at the front end of the needle base 10, a liquid channel 11 is arranged in the needle base 10, the needle tube 20 is communicated with the liquid channel 11, a filtering membrane 30 is arranged in the liquid channel 11, the filtering membrane 30 is circular, the filtering membrane 30 is vertical to the axis of the liquid channel 11, the peripheral wall of the liquid channel 11 is provided with an annular step surface 12, a press ring 13 is arranged in the liquid channel 11, one surface of the filter membrane 30 is in press fit with the annular step surface 12, the other surface of the filter membrane 30 is in press fit with the press ring 13, namely the press ring 13 presses and fixes the filter membrane 30 on the annular step surface 12, so that the medicine filters impurities through the filtering membrane 30 when the medicine is injected, to prevent the impurities from being injected into the human body along with the medicine.
The press ring 13 is in interference fit with the peripheral wall of the liquid channel 11, so that the press ring 13 is fixed firmly, and the press ring 13 fixes the filter membrane 30 more firmly.
The liquid passage 11 in be provided with a plurality of supporting shoe 14, a plurality of supporting shoe 14 is cylindrical, the axis of each supporting shoe 14 all is parallel with the axis of needle tubing 20, a plurality of supporting shoe 14 is around the axis circumference evenly distributed of needle tubing 20, the one end of a plurality of supporting shoe 14 all is fixed mutually with needle file 10, the other end of a plurality of supporting shoe 14 all offsets with a surface towards needle tubing 20 of filtration membrane 30, thereby make a plurality of supporting shoe 14 form the supporting role to filtration membrane 30, in order to avoid filtration membrane 30 to receive liquid pressure and warp seriously.
The needle tubing 20 on the fixed cover put a lantern ring 40, many spinal branchs vaulting pole 50 around needle tubing 20 circumference evenly distributed, every spinal branchs vaulting pole 50 homogeneous phase sets up for the slope of needle tubing 20, the one end of many spinal branchs vaulting pole 50 all is connected with lantern ring 40, the other end of many spinal branchs vaulting pole 50 all is connected with needle file 10, like this, many spinal branchs vaulting pole 50 play the reinforcement effect to needle tubing 20 to avoid needle tubing 20 buckling deformation.
The outer wall of the needle base 10 is provided with a transparent tube body 70, one end of the transparent tube body 70 is open and the other end is closed, the open end of the transparent tube body 70 is fixed on the outer wall of the needle base 10, the axis of the transparent tube body 70 is perpendicular to the axis of the liquid channel 11, the needle base 10 is provided with a through hole 60 for communicating the inside of the transparent tube body 70 with the liquid channel 11, the transparent tube body 70 is internally provided with a piston 80 and a pressure spring 90 which can slide along the axis direction of the transparent tube body 70, one end of the pressure spring 90 is abutted against the closed end of the transparent tube body 70, and the other end of the pressure spring 90 is abutted against the surface of the piston 80 departing from the through hole 60, so that when injecting the medicine, the medicine in the liquid channel 11 can enter the transparent tube body 70 through the through hole 60, the medicine forms pressure on the piston 80, so that the piston 80 moves in the transparent tube body 70, and the liquid in the liquid channel 11 can be judged The body pressure.
The utility model also provides an injector, it includes cylinder, piston, push rod and foretell syringe needle, piston slidable sets up in the cylinder, and the push rod is connected with the piston, and the front end at the cylinder is installed to the syringe needle
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, but should not be construed as limiting the claims, and the present invention is not limited to the above-described embodiments, but may be modified in various ways. In summary, all changes that can be made within the scope of the independent claims of the present invention are within the scope of the present invention.
Claims (4)
1. An injection needle comprises a needle seat (10) and a needle tube (20) arranged on the needle seat (10), wherein a liquid channel (11) is arranged in the needle seat (10), the needle tube (20) is communicated with the liquid channel (11), and a filtering membrane (30) is arranged in the liquid channel (11), and is characterized in that an annular step surface (12) is arranged on the peripheral wall of the liquid channel (11), a pressing ring (13) is arranged in the liquid channel (11), one surface of the filtering membrane (30) is in pressing fit with the annular step surface (12), and the other surface of the filtering membrane (30) is in pressing fit with the pressing ring (13);
the pressing ring (13) is in interference fit with the peripheral wall of the liquid channel (11);
a plurality of supporting blocks (14) are arranged in the liquid channel (11), the supporting blocks (14) are evenly distributed around the axis of the needle tube (20) in the circumferential direction, one ends of the supporting blocks (14) are fixed with the needle seat (10), and the other ends of the supporting blocks (14) are abutted to the surface, facing the needle tube (20), of the filtering membrane (30).
2. The needle of claim 1, wherein the needle tube (20) has a sleeve ring (40) fixed thereon, the plurality of support rods (50) are evenly distributed around the circumference of the needle tube (20), one end of each of the plurality of support rods (50) is connected to the sleeve ring (40), and the other end of each of the plurality of support rods (50) is connected to the needle base (10).
3. The injection needle according to claim 2, wherein a transparent tube (70) is disposed on the outer wall of the needle holder (10), one end of the transparent tube (70) is open and the other end is closed, the open end of the transparent tube (70) is fixed on the outer wall of the needle holder (10), a through hole (60) for communicating the inside of the transparent tube (70) with the liquid channel (11) is disposed on the needle holder (10), a piston (80) and a compression spring (90) which can slide along the axial direction of the transparent tube (70) are disposed in the transparent tube (70), one end of the compression spring (90) abuts against the closed end of the transparent tube (70), and the other end of the compression spring (90) abuts against a surface of the piston (80) which deviates from the through hole (60).
4. A syringe comprising the injection needle of any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020607827.XU CN213220067U (en) | 2020-04-21 | 2020-04-21 | Injection needle and injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020607827.XU CN213220067U (en) | 2020-04-21 | 2020-04-21 | Injection needle and injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213220067U true CN213220067U (en) | 2021-05-18 |
Family
ID=75866910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020607827.XU Active CN213220067U (en) | 2020-04-21 | 2020-04-21 | Injection needle and injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213220067U (en) |
-
2020
- 2020-04-21 CN CN202020607827.XU patent/CN213220067U/en active Active
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