CN217987846U

CN217987846U - Anterior chamber puncture needle

Info

Publication number: CN217987846U
Application number: CN202221671637.XU
Authority: CN
Inventors: 张小艳; 谢立科
Original assignee: Ophthalmology Hospital Of China Traditional Chinese Science Medicine Institute
Current assignee: Ophthalmology Hospital Of China Traditional Chinese Science Medicine Institute
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-12-09
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses an anterior chamber puncture needle, including syringe needle (1) and injection syringe (2), syringe needle (1) sets firmly the tip of injection syringe (2), the two coaxial arrangement, sliding connection has syringe needle protective case (3) on injection syringe (2), syringe needle protective case (3) have two operating position, when being located first operating position, syringe needle (1) is located in syringe needle protective case (3), when being located second operating position, syringe needle protective case (3) are established completely on injection syringe (2). The utility model discloses have the syringe needle sheath, prevent accidental injury operator, and can realize once only letting liquid to normal intraocular pressure.

Description

Anterior chamber puncture needle

Technical Field

The utility model relates to a puncture needle, in particular to an anterior chamber puncture needle, belonging to the technical field of medical instruments.

Background

The 1ml syringe needle is thicker and longer, when the needle breaks through the corneal endothelium, the lens or the iris is easy to be damaged, and a longer puncture tunnel is possibly generated; the liquid can not be discharged to normal intraocular pressure by one puncture, and multiple punctures and intraocular pressure measurements are needed to reach the normal intraocular pressure value, so that the infection condition can occur.

The side puncture knife has large diameter, and a generated puncture opening is large, so that intraocular pressure is easy to suddenly drop after puncture, and even drops to a normal value, infection, retinal detachment, hyphema and the like can be caused; the lens and iris are easily damaged.

In addition, the injector or the side-through knife in the prior art is a sharp tool, which is easy to accidentally injure an operator and has no any protection measure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anterior chamber puncture needle to solve the technical problem among the prior art, it has the syringe needle sheath, prevents accidental injury operator, and can realize once only discharging to normal intraocular pressure.

The utility model provides an anterior chamber puncture needle, including syringe needle and syringe, the syringe needle sets firmly the tip of syringe, the two coaxial arrangement, sliding connection has syringe needle protective case on the syringe, syringe needle protective case has two operating position, when being located first operating position, the syringe needle is located in the syringe needle protective case, when being located the second operating position, syringe needle protective case overlaps completely and is established on the syringe.

In the anterior chamber puncture needle, preferably, the outer wall of the injection tube is provided with two guide rods symmetrically arranged relative to the axis of the injection tube, and the inner wall of the needle head protection sleeve is formed with a chute matched with the guide rods, wherein the chute is a through chute.

In the anterior chamber puncture needle, preferably, two limit grooves are formed on the top surfaces of the two guide rods, and two limit protrusions matched with the limit grooves are arranged in the sliding groove.

In the anterior chamber puncture needle, the injection tube and the needle head protection sleeve are preferably made of transparent plastic materials.

In the anterior chamber puncture needle, the length of the needle head is preferably 10mm-15mm, the inner diameter of the needle head is 0.15mm, and the outer diameter of the needle head is 0.33mm.

In the anterior chamber puncture needle, the volume of the injection tube is preferably 1ml, and the outer wall of the injection tube is provided with scales, and each scale represents 0.01 ml.

Compared with the prior art, the utility model relates to an anterior chamber puncture needle, its characterized in that: including syringe needle and syringe, the syringe needle sets firmly the one end at the syringe, and the two is coaxial arranges, and sliding connection has syringe needle protective case on the syringe, and syringe needle protective case has two operating position, and when being located first operating position, the syringe needle is located syringe needle protective case, when being located second operating position, and syringe needle protective case overlaps completely and establishes on the syringe. The utility model discloses a set up syringe needle protective case, can transfer it to first operating position when not using, can not cause the accidental injury to the user like this, only need when needs use with syringe needle protective case transfer to second operating position can.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of the reference numerals: the syringe needle comprises a syringe needle 1, an injection tube 2, a syringe needle protecting sleeve 3, a guide rod 4, a sliding groove 5, a limiting protrusion 6, a limiting groove 7 and scales 8.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The embodiment of the utility model provides a: as shown in fig. 1, an anterior chamber puncture needle comprises a needle head 1 and an injection tube 2, wherein the needle head 1 is fixedly arranged at one end of the injection tube 2, the needle head 1 and the injection tube 2 are coaxially arranged and are communicated with each other, the other end of the injection tube 2 is an open end, a needle head protective sleeve 3 is slidably connected onto the injection tube 2, the needle head protective sleeve 3 has two working positions, when the needle head 1 is positioned in the needle head protective sleeve 3 when the needle head is positioned in a first working position, and when the needle head protective sleeve 3 is positioned in a second working position, the needle head protective sleeve 3 is completely sleeved on the injection tube 2.

Referring to fig. 1, when not in use, the needle protecting sleeve 3 is located at the first working position, i.e. the state shown in the figure, and the needle 1 is located inside the needle protecting sleeve 3, so that the user is not accidentally injured, and when in need of use, the needle protecting sleeve 3 is slid rightwards, so that the needle protecting sleeve 3 is completely slid onto the injection tube 2, i.e. the second working position, and the needle 1 is completely exposed, so that the operator can perform puncture.

In a specific embodiment, two guide rods 4 are arranged on the outer wall of the injection tube 2 symmetrically with respect to the axis thereof, and a sliding groove 5 matched with the guide rods 4 is formed on the inner wall of the needle head protection sleeve 3, and the sliding groove 5 is a through groove. Through the setting of guide bar 4 and spout 5, can conveniently operate syringe needle protective sheath 3.

Further, all be formed with two spacing recesses 7 on the top surface of two guide bar 4, have two in the spout 5 with spacing recess 7 complex spacing arch 6. Set up spacing recess 7 and spacing arch 6 and can carry on spacingly to syringe needle protective sheath 3, make it can be fixed a position when removing to first operating position and second operating position, prevent its automatic movement.

Preferably, the syringe 2 and the needle protecting sleeve 3 are both made of transparent plastic. The length of the needle head 1 is 10mm-15mm, the inner diameter of the needle head 1 is 0.15mm, and the outer diameter is 0.33mm. The syringe 2 has a volume of 1ml, and the outer wall of the syringe 2 has graduations 8, each graduation 8 representing 0.01 ml.

The utility model can slowly reduce the intraocular pressure to 12mmHg-15mmHg during puncture by setting the sizes of the needle head 1 and the injection tube 2, the utility model can discharge liquid to normal intraocular pressure at one time, does not need to discharge liquid repeatedly to measure the intraocular pressure, and reduces the infection probability; the needle head is short and thin, can easily penetrate through the cornea and is not easy to damage the crystalline lens or iris.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims

1. An anterior chamber puncture needle, comprising: including syringe needle (1) and injection syringe (2), syringe needle (1) sets firmly the tip of injection syringe (2), the two is coaxial to be arranged, sliding connection has syringe needle protective sleeve (3) on injection syringe (2), syringe needle protective sleeve (3) have two operating position, when being located first operating position, syringe needle (1) is located in syringe needle protective sleeve (3), when being located the second operating position, syringe needle protective sleeve (3) are established completely on injection syringe (2).

2. The anterior chamber puncture needle according to claim 1, wherein: the syringe is characterized in that two guide rods (4) which are symmetrically arranged relative to the axis of the syringe are arranged on the outer wall of the syringe (2), a sliding groove (5) matched with the guide rods (4) is formed on the inner wall of the needle head protecting sleeve (3), and the sliding groove (5) is a through groove.

3. The anterior chamber puncture needle according to claim 2, wherein: two all be formed with two spacing recess (7) on the top surface of guide bar (4), have in spout (5) two with spacing protruding (6) of spacing recess (7) complex.

4. The anterior chamber puncture needle according to claim 3, wherein: the injection tube (2) and the needle head protective sleeve (3) are both made of transparent plastic materials.

5. An anterior chamber puncture needle according to any one of claims 1-4, wherein: the length of the needle head (1) is 10mm-15mm, the inner diameter of the needle head (1) is 0.15mm, and the outer diameter of the needle head is 0.33mm.

6. The anterior chamber needle of claim 5, wherein: the volume of the injection tube (2) is 1ml, scales (8) are arranged on the outer wall of the injection tube (2), and each scale (8) represents 0.01 ml.