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Fast-retractable type pressurizing injector

A syringe and quick-return technology, which is applied in the field of syringes, can solve the problems of unsatisfactory reliability, inconvenient use and operation, and imperfect manufacturing precision, and achieves excellent practical effects, simple structure and creative effects.

Inactive Publication Date: 2010-07-14
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used screw and rack syringes are not perfect in manufacturing accuracy, especially in reliability, and are not convenient to use and operate.
[0003] At present, there is no special syringe with good reliability, high precision, scientific production and easy use in heart surgery and joint replacement surgery.

Method used

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  • Fast-retractable type pressurizing injector

Examples

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Embodiment Construction

[0016] A quick-return pressurized syringe, comprising an injection tube 1, a sealing ring 2, a screw push rod 3, an inner cam sleeve 4, an upper split nut 5, a spring 6 and a lower split nut 7; the injection tube 1 is The main connection and functional parts, the front end of the injection tube 1 is the outlet, the screw push rod 3 is installed in the injection tube 1, the groove at the front end of the screw push rod is equipped with a sealing ring 2, and the sealing ring 2 is closely matched with the injection tube 1;

[0017] The rear end of the injection tube 1 is inlaid with an inner cam sleeve 4, the wall surface of the outer circumference of the inner cam sleeve 4 is fixedly connected with the inner wall of the injection tube 1, and the inner wall of the inner cam sleeve 4 is respectively symmetrically provided with a left boss 9 and a right boss 8 , the left and right bosses 9, 8 are integrated with the inner cam sleeve 4, the upper split nut 5 and the lower split nut 7...

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Abstract

The invention provides a fast-retractable type pressurizing injector. A spiral push rod is arranged in an injection tube, an inner cam sleeve is embedded at the back end of the injection tube, a left lug boss and a right lug boss are symmetrically arranged on the inner wall of the inner cam sleeve, an upper opening screw nut and a lower opening screw nut are arranged on the spiral push rod and are respectively arranged in the inner cam sleeve, the upper ends of the outer edges of the middle parts of the upper opening screw nut and the lower opening screw nut are respectively provided with an upper convex baffle and a lower convex baffle 11, the upper convex baffle and the lower convex baffle are respectively and correspondingly butted against the left lug boss and the right lug boss, both ends of the upper opening screw nut and the lower opening screw nut are respectively in butt joint, and springs are respectively arranged at the joints of both ends of the upper opening screw nut and the lower opening screw nut. The invention has the advantages of scientific and reasonable design, original effect, good practical effect and better development prospects, and is suitable for clinic application.

Description

technical field [0001] The invention relates to a syringe, in particular to a quick-return pressurized syringe. Background technique [0002] Bone cement syringes used for drug delivery in cardiac surgery or joint replacement surgery and orthopedic surgery are all special syringes. At present, this kind of special syringe adopts a screw and rack mechanism, which can realize the purpose of pressurized injection. Obviously, this kind of syringe not only requires high strength of materials, but also high manufacturing precision, and better reliability. However, the currently used screw and rack type syringes are not perfect in manufacturing accuracy, especially in reliability, and are also inconvenient to use and operate. [0003] At present, there is no special syringe with good reliability, high precision, scientific production and easy use in heart surgery and joint replacement surgery. Contents of the invention [0004] The object of the present invention is to provide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/31
Inventor 张斯萌张力文崔梦遥张辽远
Owner SHENYANG LIGONG UNIV
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