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Syringe

A technology of syringes and couplers, which is applied in the field of syringes, can solve problems such as complexity and increased production costs of syringes, and achieve the effect of avoiding secondary use

Inactive Publication Date: 2007-11-07
J·施瓦茨比希
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of this, it requires relatively complex mechanical equipment, which undoubtedly increases the production cost of the syringe

Method used

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Embodiment Construction

[0021] The syringe shown in FIG. 1 is made of plastic to form a cylindrical barrel 10 , the front of which is contracted to form a port 12 . At the distal end of the barrel, there is an annular groove on its inner surface to form a self-locking device, located between the port 12 and the main body of the barrel 10 .

[0022] A disc-shaped piston 16 is at the end of the stem and slides within the cylindrical barrel.

[0023] As shown in FIG. 1, the needle tube 20 is located inside the barrel with the tip positioned therein and protected by the port. The rear of the needle tube 20 is in contact with the piston through a connection 22 . The coupler 22 consists of a needle end portion 24 and a piston end portion 26 . In Figure 1, these devices are in a freely connected state, and there is mutual thrust between the piston and the needle tube. When the piston is withdrawn, the force between the two disappears. This section of the connecting device 24 has an annular protrusion 28...

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Abstract

Disclosed is a method for starting a terminal by supporting a hard-wired start mode. The method comprises the steps of: receiving an execution command of the hard-wired start mode; reading by a CPU of the terminal a start code obtained by hardware in a hard-wired area within a modem chip and executing the read start code; copying by the CPU of the terminal a loader achieved by hardware in the hard-wired area within the modem chip into a memory area; downloading a new start code and a new loader from an exterior host by means of the copied loader and storing the downloaded start code and loader; and replacing an internal start code and a loader of a flash area with the downloaded start code and loader. In the method, when an internal start code of a terminal has been broken, or broken codes or unexpected codes have been downloaded to a start area while downloading a program using serial ports, for example, it is possible to download the start code again through entering a hard-wired start mode.

Description

technical field [0001] The invention relates to a syringe composed of a piston slidable in a syringe and a retractable needle tube. Background technique [0002] At present, the syringes used clinically to inject drugs and vaccines are disposable and destroyed after use, and it is ensured that they cannot be reused, so as to avoid various infections caused thereby. However, due to unprotected syringe needles there is still a risk of puncture injuries and infection during application and during its handling. To reduce this risk, it is common practice in syringe disposal to protect the needle with a needle cap. However, even such needle caps can cause puncture injuries in handling syringes. [0003] In practice, known syringe needles are elastic and require mechanical handling after the syringe is used. Because of this, it requires relatively complicated mechanical equipment, which undoubtedly increases the production cost of the syringe. However, for large numbers of vacc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32
CPCA61M5/322A61M2005/3224
Inventor J·施瓦茨比希
Owner J·施瓦茨比希
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