Bidirectional empty needle
An empty needle and syringe technology, applied in hypodermic injection devices, pumping systems, wound drainage devices, etc., can solve the problems of high manufacturing cost and high cost of patient treatment
Inactive Publication Date: 2016-12-14
陈宇
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0003] The effect of the existing negative pressure device is better, but the manufacturing cost is high, so that the treatment cost of the patient is higher
Method used
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Embodiment Construction
[0017] The present invention provides a two-way empty needle, which includes a syringe 1 , a negative pressure tube 2 and a liquid discharge tube 3 connected to the syringe 1 . The negative pressure pipe 2 is equipped with a first one-way valve 4 for controlling the fluid entering the interior of the syringe 1 along the negative pressure pipe, and the discharge pipe 3 is provided with a second one-way valve for controlling the fluid to be discharged from the syringe along the discharge pipe 5; and the pull rod 6 embedded in the syringe and sealingly sliding therewith.
[0018] For example, when the two-way empty needle of the present invention is applied to the negative pressure device technical field for drawing the liquid at the patient's wound, the negative pressure tube 2 and the wound site form a sealing system, and then pull the pull rod 6, due to the connection between the pull rod and the syringe The inner wall is sealed and can slide inside it, so that a negative pres...
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The invention discloses a bidirectional empty needle. The bidirectional empty needle comprises a needle cylinder, a negative pressure pipe, a drain pipe and a pull rod, wherein the negative pressure pipe and the drain pipe are communicated with the needle cylinder, a first one-way valve for controlling fluid to enter the needle cylinder along the negative pressure pipe is installed on the negative pressure pipe, a second one-way valve for controlling fluid to be drained out of the needle cylinder along the drain pipe is arranged on the drain pipe, and the pull rod is embedded into the needle cylinder and slides in the needle cylinder in a sealed mode. As the negative pressure pipe and the drain pipe communicated with the needle cylinder are arranged on the needle cylinder, the two one-way valves are used for controlling flowing direction of the fluid, the negative pressure pipe can only be introduced into a negative pressure pipe, the fluid in the negative pressure pipe can only be drained through the drain pipe, the two one-way valves different in direction make negative pressure formed in the negative pressure pipe, and the fluid can be drained through the drain pipe conveniently.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a bidirectional empty needle. Background technique [0002] Negative pressure wound therapy technology is a technology suitable for wound treatment, which can promote wound healing. Negative pressure acts on the cell membrane to expand and distort it. The cell is considered damaged, and the information of damage is transmitted to the nucleus. Through signal conversion, it causes the cell to secrete pre-healing growth factors, including vascular proliferation factors, thereby stimulating the tissue to produce more Neovascularization. Negative pressure suction absorbs the exudate from the wound surface, helps establish the liquid balance of the wound surface, provides a moist environment, removes necrotic tissue, reduces the number of bacteria on the wound surface, reduces edema, increases wound blood flow, and increases capillary filling. [0003] The effect of the exist...
Claims
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IPC IPC(8): A61M1/00A61M27/00
CPCA61M1/0023A61M27/00A61M1/74A61M1/81A61M1/84
Inventor 陈宇
Owner 陈宇