CN203506845U - Safety type thorax puncture needle - Google Patents

Abstract

The utility model belongs to the technical field of medical puncture instruments related to the thorax, and provides a safe thoracentesis needle. Its main feature is that it includes a needle body, a needle seat is installed at the rear end of the needle body, and a section of external thread is arranged at the rear of the needle body. The front end of the body is curved and arc-shaped; it also includes a latex tube, which is composed of a front joint pipe, a rear joint pipe, a latex air bag, a one-way pressure valve, and a rotary valve. The front joint pipe and the rear joint pipe communicate with the latex air bag respectively , the one-way pressure valve is set inside the middle section of the front joint pipe, the rotary valve is set in the middle section of the rear joint pipe, the needle seat of the front joint pipe is connected, the rear joint pipe is connected with an adapter, and the adapter is provided with a syringe interface and a drainage tube interface . Compared with the prior art, the present invention can prevent the occurrence of idiopathic pulmonary complications in the process of thoracentesis, and has simple structure, convenient operation and strong practicability.

Description

A safety thoracentesis needle

technical field

The utility model belongs to the technical field of medical puncture instruments related to the thorax, and relates to a safe thoracentesis needle.

Background technique

Thoracentesis refers to a technique in which patients with pleural effusion or pneuma are extracted through a thoracentesis needle for the purpose of diagnosis and treatment of diseases. Complications of thoracentesis include pleural reaction, hemothorax, pneumothorax, puncture site bleeding, chest wall cellulitis, empyema, and air embolism. The causes of the above-mentioned complications are described as follows: hemothorax is mostly caused by puncturing intercostal arteries and veins; pneumothorax can be caused by air leakage due to the unclamped rubber tube, or it can also be caused by the patient’s severe coughing on the surface of the lung tissue during the puncture process. Scratched by the puncture needle; chest wall cellulitis and empyema are caused by bacterial infection caused by lax disinfection during puncture; pleural reaction can be caused by the puncture needle touching the pleura, and its clinical manifestations are chest tightness, chest pain, pale complexion, rapid heartbeat and headache. Dizziness and other discomfort. There are inevitable factors for the occurrence of the above-mentioned complications, but the defect in the design of the thoracentesis needle in the prior art is also one of the factors leading to the occurrence of the complications.

Existing thoracocentesis needle is made up of needle tube, needle base, sebific tube, and specifically one end of needle tube is a sharp needle, and the other end of needle tube is provided with needle base, and needle base is connected with sebific tube. The needle is pointed and inclined. During the puncture process, this puncture needle may cause the following injuries to the patient: (1) Its tip is exposed and sharp, which can easily damage the lung tissue, or damage the patient's intercostal blood vessels during the puncture process. , nerves and lung tissue; (2) The nipple of the syringe is not tightly connected to the rubber tube or the assistant loosens the clamp too early, which may cause air to enter the chest cavity; (3) After drawing 50ml each time, the rubber tube should be clamped to drain the liquid in the syringe (4) It is difficult to control the depth of needle insertion smoothly, and the operator's attention is slightly inattentive, which makes the needle body move back and forth in the chest cavity, increasing the risk of lung tissue damage. possibility.

Utility model content

The technical solution adopted by the utility model to solve the technical problem is to design a safety thoracentesis needle, including a needle body, a needle seat is installed at the rear end of the needle body, and a section of external thread is arranged at the rear of the needle body. , the length of this section of external thread is one-half of the length of the needle body, and the limit cover and the anti-retraction ring are sequentially threaded on this section of external thread from front to back, and the front end of the needle body is curved and arc-shaped; it also includes A latex tube, the latex tube is composed of a front joint pipe, a rear joint pipe, a latex airbag, a one-way pressure valve, and a rotary valve. The front joint pipe and the rear joint pipe are respectively arranged at the front and rear ends of the latex airbag and communicate with the latex airbag. The one-way pressure valve is set inside the middle section of the front joint pipe, the rotary valve is set in the middle section of the rear joint pipe, the head of the front joint pipe communicates with the needle seat, and the tail of the rear joint pipe is connected with an adapter, and the adapter is provided with a syringe interface and drainage tube interface.

When using, first place the limit cover and the anti-retraction ring near the needle seat, then open the rotary valve, and then hold the needle seat and align the needle body with the puncture site for puncture. Since the front end of the needle body is curved and arc-shaped, it can avoid Directly penetrate the patient's intercostal blood vessels or directly injure the patient's intercostal nerves and lung tissue. When the needle tip penetrates into the skin, squeeze the latex balloon with your hands to discharge the gas in the latex balloon from the open rotary valve. After the gas is discharged Close the rotary valve. At this time, the latex airbag cannot inhale gas from the needle tip and the side of the rotary valve is in a negative pressure state. It remains flat and continues to puncture carefully. When the needle tip pierces the parietal pleura, the latex airbag inhales gas or liquid from the needle tip. Airbag recovery, by observing the state of the latex airbag, even beginners can see that the needle has penetrated into the chest cavity, which is simple, convenient and safe. At the same time, because the front end of the needle body is curved and arc-shaped, the needle body staying in the chest cavity will not cause damage to the visceral pleura. For severe injuries, after the needle body penetrates into the predetermined depth, rotate the limit cover to touch the skin, and then tighten the anti-retraction ring against the limit cover, so as to prevent the needle body from accidentally deep piercing into the chest cavity, which is safer and more reliable. In the event of an accident, the rotary valve is closed at this time, and the one-way pressure valve ensures that no air can enter the chest cavity from the needle body, preventing the occurrence of pneumothorax. When it is necessary to extract fluid or gas accumulation, the syringe Or the drainage device is docked with the syringe interface or drainage tube interface on the adapter, and then the rotary valve can be opened to operate. The one-way pressure valve can also ensure that the accumulated gas or liquid will not flow back, which improves the work efficiency and is safer and more practical. When replacing the syringe, closing the rotary valve can ensure that no gas or liquid will enter or flow out after the syringe is pulled out, and the operation is convenient. In summary, the new type of safe thoracentesis needle can effectively prevent the occurrence of idiopathic pulmonary complications during thoracentesis, and has a simple structure, convenient operation, strong practicability, and is easy to be popularized and used in respiratory medicine.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a safe thoracentesis needle of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described, and its structure and advantage will be clearer.

Referring to Fig. 1, a safety thoracentesis needle includes a needle body 1, a needle seat 2 is installed at the rear end of the needle body 1, and a section of external thread 3 is arranged at the rear of the needle body 1, and the section of external thread 3 The length is one-half of the length of the needle body 1. On this section of the external thread 3, the limit cover 4 and the anti-retraction ring 5 are threaded sequentially from front to back. The front end of the needle body 1 is curved and arc-shaped; it also includes a Latex tube, this latex tube is made up of front joint pipe 6, rear joint pipe 7, latex air bag 8, one-way pressure valve 9, rotary valve 10, and front joint pipe 6 and rear joint pipe 7 are respectively arranged on the front and back sides of latex air bag 8 end and communicates with the latex air bag 8, the one-way pressure valve 9 is arranged inside the middle section of the front joint pipe 6, the rotary valve 10 is arranged at the middle section of the rear joint pipe 7, the head of the front joint pipe 6 communicates with the needle seat 2, and the rear joint pipe An adapter 11 is connected to the tail of the tube 7, and the adapter 11 is provided with a syringe interface 12 and a drainage tube interface 13.

Claims (1)

1. a safety type thoracentesis needle, comprise needle body, the rear end of needle body is provided with needle stand, it is characterized in that: at described needle body rear portion, be provided with one section of external screw thread, this section of externally threaded length is 1/2nd of needle body length, on this section of external screw thread, be threaded successively after go to limited location cover and anti-back circle, the front end of described needle body is crooked arc; Also comprise a latex tubing, this latex tubing is comprised of front connector pipe, rear junction block, latex balloon, one-way pressure valve, changeover valve, front connector pipe and rear junction block are separately positioned on the rear and front end of latex balloon and are communicated with latex balloon, one-way pressure valve is arranged on the inside in front connector pipe stage casing, changeover valve is arranged on the stage casing of rear junction block, the head of front connector pipe is communicated with needle stand, and the afterbody of rear junction block is connected with adaptor, and adaptor is provided with syringe interface and drainage tube interface.

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