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CN-224220514-U - Multifunctional injector convenient to use

CN224220514UCN 224220514 UCN224220514 UCN 224220514UCN-224220514-U

Abstract

The application discloses a convenient-to-use multifunctional injector which comprises an injector needle cylinder, a piston capable of reciprocating in the needle cylinder, a piston rod capable of pulling the piston to move and a needle head, and is characterized in that a filtering device is arranged on the needle cylinder, a first end of the filtering device is communicated with an outlet end of the needle head, a second end of the filtering device is communicated with an inner cavity of the needle cylinder, a filtering body and a liquid passing channel arranged beside the filtering body are arranged in the filtering device, a first one-way valve is arranged at the first end of the liquid passing channel and is communicated with the outlet end of the needle head, a second one-way valve is arranged at the second end of the liquid passing channel and is communicated with the inner cavity of the needle cylinder, and a third one-way valve is arranged at the first end of the filtering body and is communicated with the outlet end of the needle head.

Inventors

  • LI BING
  • XU RONG
  • CHENG SHIQUAN
  • SHEN YILING
  • HUANG XUDONG

Assignees

  • 厦门医学院

Dates

Publication Date
20260512
Application Date
20250402

Claims (6)

  1. 1. The multifunctional injector comprises an injector needle cylinder, a piston capable of reciprocating in the needle cylinder, a piston rod and a needle, wherein the piston rod and the needle are capable of pulling the piston to move, and the multifunctional injector is characterized in that a filtering device is arranged on the needle cylinder, the first end of the filtering device is communicated with the outlet end of the needle, the second end of the filtering device is communicated with the inner cavity of the needle cylinder, a filtering body and a liquid passing channel arranged beside the filtering body are arranged in the filtering device, the first end of the liquid passing channel is provided with a first one-way valve and is communicated with the outlet end of the needle, the second end of the liquid passing channel is provided with a second one-way valve and is communicated with the inner cavity of the needle cylinder, the second end of the filtering body is provided with a fourth one-way valve and is communicated with the inner cavity of the needle cylinder, the first one-way valve and the second one-way valve are arranged in the same direction, the injection liquid can only flow from the first end to the second end of the liquid passing channel, and the third one-way valve and the fourth one-way valve are arranged in the same direction, and the injection liquid can only flow from the second end of the filtering body to the first end.
  2. 2. The portable multifunctional syringe of claim 1, wherein the first check valve, the second check valve, the third check valve and the fourth check valve each comprise an annular body and a plurality of valve leaves arranged on a first end of a through opening of the annular body, the outer ends of the valve leaves are close to each other to realize channel closure, and the outer ends of the valve leaves are far away from each other to realize channel smoothness.
  3. 3. The portable multi-functional injector of claim 1, wherein the fluid passage has two sets, each set having a third check valve and a fourth check valve.
  4. 4. The multifunctional injector convenient to use according to claim 1, wherein an exhaust mechanism is arranged between the filtering device and the outlet end of the needle head, the exhaust mechanism comprises an exhaust channel communicated with the outlet end of the needle head, a pontoon which can float and sink along with the quantity of injection liquid is arranged at the inlet end of the exhaust channel, and a lever and a sealing pad which is fixed on the free end of the lever and used for sealing the exhaust channel.
  5. 5. The multifunctional injector convenient to use according to claim 4, wherein the sealing gasket is provided with an inner extension pipe at the position where the exhaust channel is blocked, the outer peripheries of the inner extension pipe, the sealing gasket and the lever are sleeved with springs, and the floating pontoon drives the sealing gasket to block the opening and the closing of the port of the inner extension pipe, so that the exhaust channel is blocked and opened.
  6. 6. The convenient-to-use multifunctional injector of claim 1, wherein a pressing sheet is arranged at the tail end of the piston rod, and a telescopic plastic hose sleeved on the periphery of the piston rod is connected between the pressing sheet and the tail part of the needle cylinder.

Description

Multifunctional injector convenient to use Technical Field The utility model relates to a hospital injector, in particular to a multifunctional injector convenient to use. Background The syringe is quite widely used in the medical industry, the demand of the syringe is increased year by year along with the continuous development of medical industry in China, and the traditional syringe has a simple structure, but the operation process of a nurse is complicated, the exhaust is required for many times, and the chips cannot be prevented from entering liquid medicine, so that medical accidents are easy to cause. The patent CN206566585U with the filter for sample liquid is searched at present and comprises a cylinder body with scales and a piston core rod matched with the cylinder body, wherein a needle filter is arranged at the liquid outlet end of the cylinder body, the cylinder body is provided with a suction pipe for injecting sample liquid into the inner cavity of the cylinder body, the outer side wall of the cylinder body is provided with a liquid adding port communicated with the inner cavity of the cylinder body, and the suction pipe injects sample liquid into the inner cavity of the cylinder body through the liquid adding port. In addition, the Chinese patent 'an exhaust blood taking needle' bulletin number CN111528865B is searched, the automatic exhaust needle comprises a needle cylinder, a coarse ventilation pipeline, a fine ventilation pipeline, a blood taking control device and a needle core which are sequentially arranged from outside to inside, wherein the blood taking control device comprises a transverse limiting part, a directional locking part and a positioning bearing part, the transverse limiting part is arranged on the inner side wall of the positioning bearing part and is matched with the needle core in a clamping manner, the positioning locking part is arranged on the lower half part of the positioning bearing part, and in a locking state, the positioning bearing part locks and the needle core to form, the automatic exhaust needle cylinder fills the blank of automatic air of the needle cylinder, meets the requirements of clinical and scientific research laboratories and the like, but cannot realize the filtration of injection and avoid the problem that a piston rod is easy to be polluted. Disclosure of utility model In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a convenient-to-use multifunctional syringe, which can realize filtration of injection and avoid easy pollution of a piston rod. The utility model is realized by the following technical scheme: The multifunctional injector comprises an injector needle cylinder, a piston capable of reciprocating in the needle cylinder, a piston rod and a needle, wherein the piston rod and the needle are capable of pulling the piston to move, and the multifunctional injector is characterized in that a filtering device is arranged on the needle cylinder, the first end of the filtering device is communicated with the outlet end of the needle, the second end of the filtering device is communicated with the inner cavity of the needle cylinder, a filtering body and a liquid passing channel arranged beside the filtering body are arranged in the filtering device, the first end of the liquid passing channel is provided with a first one-way valve and is communicated with the outlet end of the needle, the second end of the liquid passing channel is provided with a second one-way valve and is communicated with the inner cavity of the needle cylinder, the second end of the filtering body is provided with a fourth one-way valve and is communicated with the inner cavity of the needle cylinder, the first one-way valve and the second one-way valve are arranged in the same direction, the injection liquid can only flow from the first end to the second end of the liquid passing channel, and the third one-way valve and the fourth one-way valve are arranged in the same direction, and the injection liquid can only flow from the second end of the filtering body to the first end. Preferably, the first check valve, the second check valve, the third check valve and the fourth check valve all comprise an annular body and a plurality of valve leaves arranged at the first end of the opening of the annular body, the outer ends of the valve leaves are close to each other to realize channel closure, and the outer ends of the valve leaves are far away from each other to realize channel smoothness. Preferably, the liquid passing channel has two groups, and each group is provided with a third one-way valve and a fourth one-way valve. Preferably, an exhaust mechanism is arranged between the filtering device and the outlet end of the needle head, the exhaust mechanism comprises an exhaust channel communicated with the outlet end of the needle head, a pontoon which can float and sink along with the quantity of injection is arrange