Ophthalmic precise injector

A precise, ophthalmic technology, applied in the field of medical devices, can solve the problems of incomplete elimination of residues, poor sealing and sliding performance, and not simple structure, and achieves reduction of liquid residues, good sliding performance and sealing performance, and simple structure. Effect

Active Publication Date: 2020-01-14
SHANGHAI KANGDELAI ENTERPRISE DEV GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The former has poor sealing and sliding performance due to the combination of plastic and plastic; the latter has a simple structure and a more complicated production process.
After the syringe is injected with liquid, there

Method used

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Example Embodiment

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the specific embodiments thereof will be described in detail below with reference to the accompanying drawings:

[0032] see Figure 1 to Figure 11 , the preferred embodiment of the present invention, an ophthalmic precision injector, comprising a jacket 1 and a mandrel 2 inserted therein, the mandrel 2 is divided into two sections, the front section 21 of the mandrel and the back of the mandrel respectively Section 22, the rear end of the front section 21 of the core rod and the front end of the rear section 22 of the core rod are connected together by the radial dovetail structure 3.

[0033] see again image 3 and Figure 4 , the radial dovetail groove structure 3 includes a shaft rod 31, a dovetail tenon 32, a shaft hole 33 matched with the shaft rod and a dovetail groove 34 matched with the dovetail tenon; the shaft rod 31 is arranged at the rear end...

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Abstract

The invention discloses an ophthalmic precise injector. The ophthalmic precise injector comprises a jacket and a core rod inserted in the jacket. The core rod is divided into two sections, namely an anterior core rod section and a posterior core rod section. The rear end of the anterior core rod section is connected to the front end of the posterior core rod section through a radial dovetail joint-groove structure. The radial dovetail groove structure includes a shaft rod, a dovetail joint, shaft holes in fit with the shaft rod and a dovetail groove in fit with the dovetail joint. The front end of the anterior core rod section is provided with an annular protrusion that is coaxial to the core rod. An axial section of the annular protrusion is of an arc shape protruding outwardly. The rearend of the posterior core rod section is provided with a press handle for pushing and pulling the core rod. The posterior core rod section is provided with a clamp ring near to the press handle. The ophthalmic precise injector of the invention has good sliding performance and sealing performance, no liquid residue in case of liquid injection, convenient processing and use, high safety and reliability.

Description

technical field [0001] The invention relates to an ophthalmic precision injector, which belongs to the field of medical instruments. Background technique [0002] Currently on the market for disposable syringes, there are two types of seals between the core rod and the jacket. One is to use a plastic core rod to cooperate with the jacket, and the other is to install or combine injection molding ring or sheet on the core rod. The rubber sealing ring cooperates with the jacket to realize. The former has poor sealing and sliding properties due to the combination of plastic and plastic; the latter has a simple structure and a more complicated production process. After the syringe injects the liquid, there will be residual liquid in the syringe jacket and the cone head with these two sealing forms. The low residual syringes on the market can only reduce the residual amount but cannot completely eliminate the residual liquid. The ophthalmic syringe market required a syringe with...

Claims

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Application Information

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IPC IPC(8): A61F9/00A61F9/007
CPCA61F9/0008A61F9/00736
Inventor 靳湾湾张宇刘华龙
Owner SHANGHAI KANGDELAI ENTERPRISE DEV GRP CO LTD
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