32 results about "Thoracentesis" patented technology

The present subject matter relates to medical training methods and models. In one embodiment, the invention provides for devices and methods of training paracentesis procedures. In another embodiment, the subject matter provides for devices and methods of training thoracentesis procedures. In yet another embodiment, the present subject matter provides for a training methods and model for performing lumbar punctures.

The present invention provides thoracentesis systems composed of an insertion needle, a thoracentesis catheter with self-sealing valve, and a valve opening device which are utilized in the removal of fluid or gases from a pleural cavity. The insertion needle is utilized to insert the thoracentesis catheter into the pleural cavity. The thoracentesis catheter provides automatic closure of the flow path from the pleural cavity by automatic closure of the self-sealing valve upon removal of the insertion needle from the thoracentesis catheter. The self-sealing valve prevents drainage of fluid from the pleural cavity and introduction of air into the pleural cavity when the needle is withdrawn from the thoracentesis catheter and a valve opening device is not in place. A drainage flow path from the pleural cavity is established by insertion of a valve opening device into the self-sealing valve of the thoracentesis catheter, thus opening the self-sealing valve. With the self-sealing valve opened by a valve opening device, fluid or gases can be removed from the pleural cavity.

The invention described herein relates to an improved device for paracentesis procedures, such as thoracentesis. The device comprises a cannula assembly, valve assembly, and catheter assembly, wherein the cannula assembly is removably attached to the valve assembly, and the valve assembly is removably attached to the catheter assembly. The device can comprise an externally viewable indicator revealing the relative positions of the cannula assembly components. The device can further comprise a locking mechanism which controls the movement between cannula assembly components and is activated and deactivated by the coupling of the cannula assembly to the valve assembly. The device improves the precision and safety of its handling, and offers the practitioner several aspiration alternatives while maintaining separation of the internal and external patient environments.

A medical device for applying catheters, particularly for thoracentesis procedures, comprising a hollow supporting element which can be gripped ergonomically and accommodates a selector which is adapted to connect at least three openings defined in the supporting element, the first opening being functionally associated with a cannula adapted to be inserted in the body of a patient, the second opening and the third opening being able to be functionally associated respectively with two closure elements or with at least one of a syringe and a collection bag, a sharp-tipped needle being slidingly insertable in the cannula and having such a length as to pass through at least all of the cannula and protrude from it, the device further comprising a fourth opening defined in the supporting element on the side opposite the first opening for extraction or insertion of the sharp-tipped needle respectively from and into the cannula.

The invention discloses a thoracentesis guiding and positioning device for a respiratory department. The device comprises a fixing seat, a screw is installed in the middle part of the lower end of thefixing seat, and a clamping plate is arranged at the upper end of the screw. A supporting frame is installed in the middle part of the upper end of the fixing seat, and the top end of the supportingframe is provided with a cross frame. A drive shaft is installed in the middle of the cross frame, a rotating cam is mounted in the middle of the drive shaft, the lower end of the rotating cam is contacted with a lifting rod, a lifting plate is mounted at the bottom end of the lifting rod, and a fixing column is mounted in the middle of the lower end of the lifting plate. A pin is installed in themiddle of the fixing column, and a strap is installed on the outer side of the lower end of the fixing column. A guide disc is arranged in the middle of the lower end of the strap, and a drain tube is installed in the middle of the right end of the fixing column. The device achieves the function of guiding and positioning the pin, so that the pin can be accurately inserted into the thoracic cavity, a series of side effects caused by manual insertion of the pin by medical staff is avoided, and the operation difficulty of the medical operation is greatly reduced. At the same time, the device issimple to operate, high in reliability and capable of meeting the requirement for thoracentesis.

A highly-simulative fully-automatic thoracocentesis and closed drainage computer simulated standardized patient relates to the technical field of medical education equipment. The computer simulated standardized patient comprises a microcomputer controller, a simulated human body model, a simulated pneumothorax capsule, a simulated pleural effusion capsule, a breathing exercise simulator, a thorax closed drainage bottle transparent pipe water column fluctuation and fluctuation adjustment simulator, an automatic voice alarm device, a micro water pump, a water tank, a micro air pump, a half-lying bracket, and a fixed plate. The advantages are as follows: simulation is highly simulative and fully automatic; by operating the keyboard of the microcomputer controller, liquid and air can be injected into the thorax automatically, and simulated pleural effusion and simulated pneumothorax are formed automatically; breathing exercise is simulated automatically; the transparent pipe water column of the thorax closed drainage bottle can fluctuate up and down with the breathing rhythm, and the amplitude of fluctuation can be adjusted automatically; the alarm is raised by voice automatically when a thoracentesis needle is inserted at a wrong position; and the computer simulated standardized patient can be used to train and assess the thorax closed drainage and thoracocentesis skills of medical students and medical personnel, and can significantly improve the teaching effect.

A thoracentesis device (10) having a hypersensitive dual spring indication mechanism (16) (18) for alerting the user of any contact to internal body organs by the blunt tip distal end (32) of the thoracentesis device (10) once the device (210) has been inserted inside the patient's body. The thoracentesis device (10) includes a handle, an outer needle (30) having a longitudinal conduit (34) in fluid communication with a cavity (50) defined inside the handle (11). A spring loaded inner needle (28) is slide disposed inside the conduit (34) with the proximal portion of the inner needle (28) operably engaged with a large spring (22) that imparts a sufficient distal spring force to fully extend the blunt tip end (32) of the inner needle (28) beyond the sharp distal tip (54) of the outer needle (30).

The invention provides a simple and convenient thoracentesis apparatus. The apparatus comprises an outer sleeve, a puncture needle, and a two-way pushing part, wherein the inside of the outer sleeve is provided with a needle entrance channel, a liquid holding space and a pressure extraction space which are mutually independent, the puncture needle is arranged in the needle entrance channel in a slide manner, the inside of the needle entrance channel is provided with an anesthesia channel and a liquid extraction channel which are mutually independent, the anesthesia channel communicates with the liquid holding space, the liquid extraction channel communicates with the pressure extraction space, the two-way pushing part comprises a pushing block, a plug-pushing rod, a needle-pushing rod, a pressure extraction rod and a reverse part, the plug-pushing rod is connected with the pushing block and one end of the plug-pushing rod is located in the liquid holding space, the needle-pushing rod is connected with the pushing block and extends into the needle entrance channel and is connected with the puncture needle, the pressure extraction rod passes through the wall body of the outer sleevein a slide manner and one end of the pressure extraction rod is located in the pressure extraction space, the reverse part is installed on the outer sleeve and is located between the needle-pushing rod and the pressure extraction rod, and the reverse part is connected with the needle-pushing rod and the pressure extraction rod. The apparatus can simplify the steps of performing thoracentesis. Theinvention also provides a using method of the simple and convenient thoracentesis apparatus.

The invention discloses a thoracentesis seat, comprising support legs, a support frame, a seat mounted on the support legs and a backrest mounted on the support frame; the backrest is arranged above one side of the seat. The thoracentesis seat also comprises a lifting carrier plate for lifting the jaw of a human body; the lifting carrier plate is arranged above the backrest in lifting manner. Whenin use, the thoracentesis seat can keep a patient to sit in fixed posture for long time, the position of the patient is kept unchanged, deviation of a focus positioning mark is avoided, surgery can be performed quickly, accurately and safely by medical staff, and surgical risk is lowered. The thoracentesis seat also has the advantages of simple structure, ease of manufacture and low cost.

The pleural pressure indicator is a diagnostic device for use in the field where more sophisticated electronics are not permissible, though early detection of pneumothoraces relative to penetrating chest trauma is paramount to survival.When the device is used with the placement of a needle thoracentesis, it serves the user by indicating flow to and from the chest cavity. This indication is supportive of the user's diagnosis of the patients' respiratory condition.When a patient is suffering from a tension pneumothorax, positive air flow will be indicated by the device. The user can switch the check valve in the device flow path to manage intrathoracic pressure relief, therapeutically reducing the tension pneumothorax, increasing survivability.The pleural pressure indicator is a compact, portable, handheld device that is simple to operate, compatible with needles, catheters, and syringes and simple to read for a quick indication of a patient's condition.

The invention discloses a thoracentesis positioning device for respiratory physicians. The thoracentesis positioning device comprises a bed board, wherein stand columns are fixed to four corners at the bottom of the bed board through bolts, a first fixing block and a second fixing block are fixed to the bottom of the bed board through bolts, a first lead screw is built in the second fixing block,a fixing sleeve sleeves one end close to the first fixing block, of the first lead screw, and the fixing sleeve and the first fixing block are fixed through a bolt. Movable wheels can be rotated, so that the first lead screw rotates, a vertical rod is driven to move on one side of the bed board, and position adjustment in the horizontal direction can be performed; a hand wheel is rotated, so thatthe second lead screw rotates to drive a sliding sleeve to move, further, position adjustment in the width direction can be realized, and accurate determination of a puncturing position can be realized; and besides, when the thoracentesis positioning device is used, swaying is avoided, safety is improved, a user can rotate a third lead screw to enable a clamping block to slide in a movable groove,and a puncture needle device can be convenient to fix, dissemble and use.

A thoracentesis drainage needle having a side opening comprises a puncture needle core and a puncture sheath, wherein the left half part of the puncture needle core is a handle; the right half part of the puncture needle core is a long and narrow pinhead; the left end of the puncture sheath is a holding part; the right side of the holding part is a strip-shaped thin walled cylinder; and a side opening is arranged on one side of the periphery of the thin walled cylinder along the axial direction. The thoracentesis drainage needle solves the problems that the thoracentesis needle in the prior art is inconvenient to use and increases the patient pain. The thoracentesis drainage needle is fit for thoracentesis drainage.

The invention provides a thoracentesis chair, and relates to the field of medical instruments. The invention provides the thoracentesis chair. The thoracentesis chair comprises a chair back and a supporting assembly, wherein the chair back comprises a transverse rod and supporting seats, the supporting seats are connected to two ends of the transverse rod, and the transverse rod is arranged to be used for fixing the forearms and the head of a patient; and the supporting assembly comprises a supporting frame, the supporting end of each supporting seat is connected with the supporting frame, and the supporting frame is used for supporting the chair back on a bed. According to the thoracentesis chair provided by the invention, the defects of existing equipment are overcome, in daily work, a patient needs to leave a sickbed to a thoracentesis room and then sit on a large thoracentesis chair for thoracentesis, the process is very inconvenient for some elderly patients or critical patients, the patient is a burden, and a doctor cannot conveniently perform thoracentesis.

The invention relates to a thoracentesis device. All are first positioned by B-ultrasound, and then manually punctured by doctors based on experience. Because the thoracentesis is blocked by the ribs, it is necessary to choose to perform oblique puncture in the gap of the ribs. The thoracentesis equipment includes an operating table for patients to lie on and a B-ultrasound machine connected to the operating table. A real-time monitor is slid on the operating table. The B-ultrasound machine includes a host computer, an image data transmission line and a probe. , wherein one end of the image data transmission line is connected to the host, and the other end is connected to the input end of the real-time monitor; the probe is provided with a puncture groove, and the puncture groove is provided with a puncture needle hole at the bottom, and its groove shape is upward Gradually fan out. The invention integrates B-ultrasound positioning and real-time monitoring of the whole puncture process on a continuous operating platform through the modification of the probe structure, and is especially suitable for puncture at a thoracic cavity positioning angle.

The invention relates to thoracic cavity puncture equipment. Commonly, firstly, B-ultrasonic waves are adopted to carry out positioning; then a doctor carries out manual puncture according to experience. Due to blockage of ribs in the thoracentesis, inclined puncture needs to be carried out in gaps of the ribs. The thoracic cavity puncture equipment comprises an operation desk and a B-ultrasonic wave machine, wherein the operation desk is used for a patient to lie down; the B-ultrasonic wave machine is connected to the operation desk; a real-time monitor is arranged on the operation desk in a sliding manner; the B-ultrasonic wave machine comprises a host, an image data transmission line and a probe; one end of the image data transmission line is connected to the host, and the other end of the image data transmission line is connected with the input end of the real-time monitor; the probe is provided with a puncture groove; the bottom of the puncture groove is provided with a puncture needle position hole; the groove shape of the puncture groove gradually expands upwards in a sector shape. According to the invention, by transforming the probe structure and integrating B-ultrasonic wave positioning and real-time monitoring on the whole puncture process on one continuous operation desk, the thoracic cavity puncture equipment is particularly suitable for thoracic cavity positioning angle puncture.

The invention provides an automatic thoracentesis suction device which comprises a puncture needle. The automatic thoracentesis suction device is characterized in that a liquid-column pressure suction device is connected onto the puncture needle, is arranged vertically and is lower than the puncture needle. The automatic thoracentesis suction device has the advantages that the automatic thoracentesis suction device can be operated easily and conveniently and is convenient and sanitary, labor is saved, fatigue of operators is prevented owing to the fact that hydrops are automatically sucked under the negative pressure, the hydrops can be prevented from being contaminated, environments can be prevented from being polluted by the hydrops, and patients are prevented from being accidentally injured.

The invention discloses a thoracentesis stool with an adjusting function, which comprises a fixed base, a supporting cushion block assembly capable of moving up and down is arranged on the fixed base, an adjusting cushion capable of moving up and down is arranged on the fixed base, and expansion side cushion assemblies are symmetrically arranged on the two sides of the adjusting cushion. A linkage assembly is arranged between the expanding side cushion assembly and the adjusting cushion, the expanding side cushion assembly moves towards the outer side when the adjusting cushion ascends, the model size of the thoracentesis stool can be freely switched, the thoracentesis stool is suitable for being used by people with different body types, the width of the thoracentesis stool can be increased according to the rising of the height of the thoracentesis stool, and the thoracentesis stool is suitable for being used by people with different body types. And the back cushion can be proportionally lifted according to the lifting of the thoracentesis stool, and meanwhile, the thoracentesis stool is suitable for being used by people with small body types, medium body types and above body types, and is wide in application range.

The invention discloses a thoracic closed drainage tube for telescopic capsule locking thoracentesis. The thoracic closed drainage tube comprises a drainage tube water bottle; a water bottle left cover is arranged on the upper left side of the drainage tube water bottle, and a water bottle right cover is arranged on the right side; a communication tube is arranged on the upper left side of the water bottle left cover, and a lung access tube is arranged on the upper right side of the water bottle left cover; and a one-way valve is arranged above the water bottle right cover. The designed noveldrainage tube can use gravity to drain water in the patient's lungs like the traditional drainage tubes, and can use a pneumatic telescopic ball to actively drain the water in the patient's lungs. Theconventional drainage tube has a positional limitation and must be installed at a lower position than the patient, otherwise the conventional drainage tube cannot be used, but the novel drainage tubeis not affected by the position; when the patient has difficulty breathing, the pneumatic telescopic ball can also be used to help the patient breath; and the thoracic closed drainage tube is convenient and practical.

The invention discloses a double-channel thoracentesis needle, which comprises a main pipeline, a needle tube, a needle stretching device, an outer needle head, an inner needle head, a blocking deviceand a lateral passing pipeline, wherein the needle tube is connected with the main pipeline and the lateral passing pipeline; one end of the needle tube is connected with the outer needle head; the outer needle head is opposite to the main pipeline; the inner needle head is arranged inside the outer needle head; one end of the inner needle head is arranged in the needle tube; the needle stretching device and the blocking device are arranged on the side wall of the needle tube; the needle stretching device is connected with one end of the inner needle head; and the blocking device is matched with the inner needle head. After the double-channel thoracentesis needle is inserted into the thoracic cavity, the inner needle head is pushed out through the needle stretching device, so that the thoracentesis needle is convenient to use; in the insertion process, the use of the outer needle head cannot be affected; the blocking device is matched with the inner needle head, so that the inner needle head can be blocked by the blocking device to facilitate insertion and drawing of an injector; the problem of inconvenience of inserting and drawing the injector of an existing thoracentesis needleis solved; and the use safety is improved.

The invention relates to the technical field of medical instruments, in particular to a thoracocentesis draining device preventing a syringe needle from freely moving. The thoracocentesis draining device is composed of an injection syringe, a syringe cover, an operation cylinder, a pressing handle cylinder, an upper pressing handle, a lower pressing handle, an anti-skid cushion, a positioning ring and expansion supporting positioning frames. The syringe cover is arranged on the injection syringe in a sleeved mode, the operation cylinder is arranged on the syringe cover in a sleeved mode, the pressing handle cylinder is arranged on the operation cylinder in a sleeved mode, and the bottom end of the syringe cover is a positioning ring which is sleeved with the syringe cover into a whole. Each expansion supporting positioning frame is composed of an expansion supporting handle and an expansion supporting strip, wherein the expansion supporting strip is a circular arc metal strip, the upper surfaces of the two ends of the expansion supporting strip are respectively hinged to one end of the expansion supporting handle, and the other end of the expansion supporting handle is hinged to the bottom edge of the outer side wall of the operation barrel. By means of the thoracocentesis draining device, a puncture needle can vertically puncture into the inner wall of the chest, and the syringe needle is prevented from freely moving after puncturing into the chest.

The invention discloses a medical anti-pollution thoracentesis device. The device comprises an outer cannula (1) and an inner puncture needle (2), and the outer cannula (1) is a hollow tube with two closed ends; a needle tip puncture end of the inner puncture needle (2) is a front end, the rear end of the inner puncture needle (2) penetrates through the rear end surface of the outer cannula (1) and is arranged out of the outer cannula (1), and the front end of the inner puncture needle (2) is arranged in the outer cannula (1) and is in sliding contact with the outer cannula (1); the outer cannula (1) is internally provided with an empty cavity (3) and a disinfection solution cavity (4), the empty cavity (3) is close to the inner front end of the outer cannula (1), the disinfection solutioncavity (4) is close to the inner rear end of the outer cannula (1), and a middle clapboard (5) is arranged between the empty cavity (3) and the disinfection solution cavity (4). According to the technical scheme, the blood is blocked by a blood blocking stent, and therefore a clear surgical field is obtained; the structure is simple, and the blocking effect is good.

The invention discloses a thoracocentesis surgical robot based on CT or MRI image navigation. The thoracocentesis surgical robot comprises an arc support module, a three-direction translation module and an angle adjusting module. The arc support module adjusts the position of a puncture head on the exterior of the human body chest through transmission of an inner-tooth matching gear and achieves automatic locking through a clutch mechanism. The three-direction translation module is composed of three sets of spiral transmission mechanisms so that the puncture position can be adjusted. The angle adjusting module has three freedom degrees which are the needle feeding tendency freedom degree, the needle feeding angle freedom degree and the needle feeding motion freedom degree. The thoracocentesis surgical robot enables a mechanical arm to feed a needle from any position and any angle outside the chest, motion of the robot can be automatically adjusted, the locating precision is high, and speed is high.

The invention discloses a chair for thoracocentesis and PICC (Peripherally Inserted Central Catheter) maintenance, which comprises a chair seat and a backrest, chair legs are arranged on the chair seat and the backrest, a support plate is arranged on the chair seat, and a seat height adjusting part for adjusting the support height of the support plate is arranged between the support plate and the chair seat; a groove is formed in one side of the supporting plate, the bottom of the backrest is rotationally connected to the groove through an arranged connecting shaft, a supporting angle adjusting piece used for adjusting the supporting angle of the backrest is installed on the back face of the backrest, and a fixing plate used for supporting the bottom of the supporting angle adjusting piece is installed among the multiple chair legs; according to the chair for thoracocentesis and PICC maintenance, the spine forming mechanism is arranged on the front face of the backrest, the posture of a patient during thoracocentesis can be kept through the spine forming mechanism, meanwhile, the spine of the patient is in a bent state during thoracocentesis, and the chair is matched with a doctor to conduct thoracocentesis on the patient.

The invention relates to a thoracentesis negative pressure drainage device which belongs to the technical field of medical appliances. The thoracentesis negative pressure drainage device comprises a drainage container, a spring and a drainage tube which are arranged in the container, the drainage container comprises a first spherical cap body and a second spherical cap body, a first spring base isarranged on the inner wall of the first spherical cap body in a protrusive manner, a second spring base is arranged on the inner wall of the second spherical cap body in the protrusive manner, one end of the spring is arranged on the first spring base, the other end is arranged on the second spring base, at least one liquid inlet joint and a row of liquid discharge interfaces are arranged on thefirst spherical cap body, a cover and a tag are connected on the first spherical cap body or the second spherical cap body, and the drainage tube is adapted with the liquid inlet joint. The thoracentesis negative pressure drainage device has the advantages of improving the strength and avoiding the rupture; when in use, the spring can compact or release the whole body, thereby not triggering the phenomena of distortion and bulging; the operation is convenient and the selectivity is good; and the thoracentesis negative pressure drainage device can shorten the drainage time.

A thoracentesis device (10) having a hypersensitive dual spring indication mechanism (16) (18) for alerting the user of any contact to internal body organs by the blunt tip distal end (32) of the thoracentesis device (10) once the device (210) has been inserted inside the patient's body. The thoracentesis device (10) includes a handle, an outer needle (30) having a longitudinal conduit (34) in fluid communication with a cavity (50) defined inside the handle (11). A spring loaded inner needle (28) is slide disposed inside the conduit (34) with the proximal portion of the inner needle (28) operably engaged with a large spring (22) that imparts a sufficient distal spring force to fully extend the blunt tip end (32) of the inner needle (28) beyond the sharp distal tip (54) of the outer needle (30).

The invention relates to a medical nursing instrument which comprises a chair body. The chair body comprises a chair back and a seat plate, wherein the chair back is fixed at the rear end of the seatplate, the bottom of the seat plate is provided with a base for supporting the seat plate on the ground, the seat plate is foldably provided with a bed plate which can be unfolded along the front endof the seat plate, the bed plate is foldably arranged above the seat plate in a sliding manner, and a horizontal sliding track is arranged on the seat plate; the bed plate is slidingly matched on thehorizontal sliding track to achieve the sliding of the bed plate above the seat plate, the rear end of the bed plate is provided with a transitional connecting plate, the transitional connecting plateis provided with a slope surface which is in smooth transitional connection with the seat plate, supporting legs with casters are arranged on the bed plate, the chair back is hinged to the seat plateand can be turned to be horizontal towards the back of the seat plate, and rollers are arranged on the base. The medical nursing instrument can be used as a chair and unfolded into a bed, is better suitable for thoracentesis operation of patients, conveniently responds to emergency response of the patients and is convenient for patients to transfer.

The invention provides a medical thoracentesis device, which comprises a puncture cannula and a puncture needle. One end of the puncture cannula is provided with a first stopper; the outside of the puncture cannula is provided with a scale; the puncture needle is provided with a second stopper and a puncture handle. and the puncture part; the puncture handle is provided with a through hole; the puncture sleeve is sleeved on the end of the puncture needle away from the puncture handle. The puncture cannula is made of polypropylene material, which is easy to operate, less traumatic, improves the operation efficiency, reduces the pain of the patient, has good safety performance, and can control the length of the puncture needle inserted into the body.

The invention discloses a multi-functional medical rehabilitation system. The multi-functional medical rehabilitation system can be used by a patient suffering from fracture and spinal cord injury inthe whole course that the patient is hospitalized until leaving from the hospital and is even in family, and in the whole stage of treatment and rehabilitation of the patient, the multi-functional medical rehabilitation system can assist the patient to perform various daily activities, can assist medical workers to complete a series of operations, can also cooperate with medical personnel to perform operations including postural drainage, thoracentesis, chest cavity closed type drainage, phlegm discharging and the like, and besides, can cooperate with a functional training mode to promote therehabilitation of the patient. According to the multi-functional medical rehabilitation system disclosed by the invention, the angles, the postures and the heights of a rear back, a cushion, a first thigh mat, a second thigh mat, a first shank mat and a second shank mat can be controlled by a mobile phone APP or keys; a doctor or the patient can select appropriate four modes according to requirements, the patient can also accurately regulate the angles and the heights of the rear back, handrail brackets, the thigh pads and the shank pads according to own requirements, and the multi-functionalmedical rehabilitation system really achieves the purposes of being more humane, more comfortable and more convenient in design.

The invention discloses a multifunctional seat for thoracentesis comprising a seat body for thoracocentesis by a patient, wherein the seat body comprises a seat plate, seat legs and a backrest; the upper end of the backrest is provided with a lying plate for the double upper limbs of the patient to lie; one end of the lying plate is hinged to the backrest; the two sides of the lying plate are supported by hydraulic support rods; one end of each hydraulic support rod is hinged to the backrest; and the telescopic end of each hydraulic support rod is hinged to the lying plate. The lying plate isdisposed on the upper end of the backrest. When a medical worker performs thoracentesis on the patient, the patient faces the backrest and rides over the seat. The hydraulic support rods fold and openthe lying plate in order that the upper limbs of the patient lies on the lying plate. The multifunctional seat improves the comfort of the patient subjected to thoracentesis, reduces the labor intensity of the medical worker, and brings greater convenience to the thoracentesis for the medical worker.

The invention relates to a thoracentesis air-extraction device for treating pneumothorax. The air-extraction device includes a puncture needle, a warning tube and an air exhaust pipe; the puncture needle includes a needle core, a needle sheath and a needle base; the needle base is a right angle tee tube; a rubber soft plug is fixed inside the upper end of the straight tube of the needle base, andthe other end is fixedly connected to the needle sheath; the branch tubes are connected to the warning tube and the air exhaust pipe with soft tubes; the needle sheath is a plastic tube of which external diameter is gradually tapered from the head end to the tail end; the needle core penetrates into the rubber soft plug from the tail end of the needle seat and penetrates out from the needle sheath; the warning tube is a transparent tube, the bottom surface of the warning tube is provided with a small round tube connecting needle seat, the other end of the warning tube is open, and an elastic silicone membrane is fixed inside the warning tube; the air exhaust pipe is a hollow cylindrical tube, and small round tubes are fixed on the two ends of the air exhaust pipe, wherein the small round tube on one end is connected to the needle seat, and the small round tube on the other end is assembled with a silicone sleeve; and a unidirectional membrane and dustproof cloth are fixed in the air exhaust pipe. The air-extraction device is used for the air-extraction treatment of the pneumothorax; and the air-extraction device is simple in structure and convenient in using and can carry out the first aid and long-term treatment of the pneumothorax.