25 results about "Pleural cavity" patented technology

The application provides a construction system and device of a non-human animal model of tension pneumothorax, and the system comprises: a fixing unit for fixing the non-human animal; a first processing unit for puncturing a puncture needle to the parietal pleura, making a guide wire pass through the needle cavity of the puncture needle to enter the pleural cavity, and withdrawing the puncture needle; a second processing unit for inserting a catheter along the guide wire to make the catheter enter the pleural cavity, pulling out the guide wire, and fixing the catheter; a third processing unit for unidirectional air injection into the pleural cavity through the catheter; and a fourth processing unit for monitoring the range of pneumothorax, determining that the non-human animal model of tension pneumothorax is obtained when the lung sliding of the injection side chest is greater than or equal to 4 / 6 area and lung points are observed, stopping air injection, and obtaining the non-human animal model of tension pneumothorax. The construction success rate of the application is 100%, the construction process is rapid, repeatable and objective in determination, and the application can provide a rapid and repeatable platform for diagnostic research, decompression technology evaluation and training.

The utility model provides a pneumothorax deep vein catheterization drainage device capable of being automatically externally connected with a water-sealed bottle, and relates to the technical field of medical equipment, the pneumothorax deep vein catheterization drainage device comprises a drainage tube main body, two ends of the drainage tube main body are respectively connected with an output tube and an input tube; a storage cover is mounted on the outer side of the output pipe; a collecting piece is installed on the side face of the storage cover. A hole is formed in the side face of the collecting piece, and the hole in the side face of the collecting piece is communicated with the inner side of the storage cover; a fixed cover is mounted on the outer side of the input pipe; a detachable binding belt is installed on the side face of the fixing cover, and a force component plate is installed on the outer side of the fixing cover. The multiple supporting rings are distributed on the outer side of the tubular drainage device, the situation that flow of gas or liquid in the pleural cavity is affected by deformation of the drainage device is reduced, it is guaranteed that the guided-out gas or liquid is discharged in time, and the problems that deformation exists when the drainage device is pressed, and flow-out of the gas or liquid in the pleural cavity is affected are solved.

The utility model discloses a pleural adhesion separator which comprises an outer sleeve, and a guide-in structure used for accurately positioning a puncture position is movably arranged in the outer sleeve. The leading-in structure comprises an inner sleeve, the inner sleeve is detachably arranged in the outer sleeve, one end of the inner sleeve is further provided with a leading-in head, and the two sides of the outer sleeve are further provided with positioning rotary knobs used for locking the leading-in position of the inner sleeve; a pleural separation structure capable of adjusting the separation range is further arranged in the inner sleeve, the placement position of the inner sleeve can be accurately positioned, the inner sleeve is placed into a pleural cavity, the accuracy of the placement process is improved, the extension range of the guide wire can be adjusted according to the pleural adhesion range, and the separation range of the guide wire can be adjusted. The adhered pleura can be conveniently and quickly separated, and the separation efficiency is greatly improved.

This utility model discloses a voice tremor nursing teaching model in the field of nursing teaching aids. It includes a three-dimensional humanoid model with a left lung model and a right lung model positioned at the chest area. The left lung model is covered with a silicone membrane, forming a pleural cavity model. A catheter is located at the top of the left lung model, with one end extending into the pleural cavity model. Air or liquid is injected into the pleural cavity through the catheter to simulate pneumothorax or pleural effusion. The right lung model includes a detachable and replaceable lung cavity model, lung tumor model, and bronchial obstruction model. A bronchial model is located between the left and right lung models, with a microphone connected to the top of the bronchial model. The two forked ends of the bronchial model at the bottom are connected to the left and right lung models, respectively. This device can replace different models to simulate pathological states, allowing students to intuitively experience the differences in voice tremor under different pathological conditions, improving teaching effectiveness and students' clinical skills training level.

An indwelling pleural catheter system comprises an indwelling catheter device (2) comprising a catheter tube (7) with a fenestrated distal end (7A) configured to reside in the pleural cavity of a subject and a connection hub (10) fluidically coupled to a proximal end (7B) of the catheter tube, a skin anchoring member (3) to anchor the connection hub (10) to the skin of the subject, and optionally a detachable ambulatory suction module (4) configured for detachable attachment to the connection hub (10). The suction module (4) comprises a fluid inlet (19) configured for fluidic coupling to the catheter tube (7) through the connection hub (10) and a fluid outlet (20) configured for detachable fluidic coupling to a pleural fluid drainage system (5) to drain pleural fluid through the detachable ambulatory suction module. The detachable ambulatory suction module is configured to exert a negative pressure in the catheter tube upon detachment of the pleural fluid drainage system from the suction module. Treatment of pleural effusion using the system of the invention is described. An indwelling catheter system for draining fluid from the peritoneal cavity, and methods of treating ascites, is also described.

The utility model provides a check valve for a negative pressure drainage device. The check valve comprises a valve tube, a valve core and a drainage tube, the two ends of the valve pipe are hollow, and two same first through holes are oppositely formed in the vertical position in the middle of a pipe body. The valve element is integrally a cylinder and is hollow inside, and a partition is arranged in the middle. A second through hole and a third through hole are oppositely formed above the partition; a fourth through hole is formed below the partition and is perpendicular to the second through hole in position; the diameter of the through hole is the same as the inner diameter of the valve pipe; the bottom of the valve element is hollow. By rotating the valve element, the fourth through hole of the valve element is aligned with the flow guide pipe at one end of the drainage device, the bottom of the valve element is hollow, at the moment, the flow stop valve is in a right lower smooth state, the drainage device can continuously operate, the flow guide pipe is temporarily closed, and when a patient is examined after closed thoracic drainage, gas is prevented from entering the thoracic cavity; and aggravation of illness is caused.

The invention provides a closed drainage tube for special pleural effusion and a closed drainage dredging method for the thoracic cavity. The closed drainage tube for the special pleural effusion comprises a drainage tube body, an auxiliary communication block, a magnetic cleaning strip and an iron ring. And the drainage tube can be respectively connected with in-vivo and in-vitro drainage systems of a patient. The auxiliary communication block is provided with a compensation channel communicated with the drainage tube, the compensation channel and the drainage tube jointly form a drainage channel, and a path is provided for effusion drainage. And the auxiliary communication block is provided with a storage space which can be communicated with the compensation channel. And the magnetic cleaning strip is arranged in the storage space. And the iron ring can be sleeved on the drainage tube and the auxiliary communication block. And the iron ring can drive the magnetic cleaning strip to move into the drainage channel from the storage space and drive the magnetic cleaning strip to clean the inner wall of the drainage channel in the drainage channel when the drainage channel is dredged. According to the closed drainage tube for the special pleural effusion, the effusion attached to the inner wall of the drainage tube is fully scraped off under the closed condition, the smooth service life of the drainage tube is effectively prolonged, and the blocking recurrence rate is reduced.

According to the lung fibrous tissue removing device, starting from the source, abnormal fibrous grids in a pleural cavity are safely and effectively broken, ablated or cut off in a physical or energy mode, all separated small rooms are broken through, and a plurality of independent areas are fused into a whole. Therefore, all effusion in the thoracic cavity can be thoroughly drained only through one-time puncture or a few times of puncture. The operation time can be remarkably shortened, the pain of a patient can be relieved, lung trauma and various complications caused by multiple times of puncture can be fundamentally avoided, the treatment effect and safety of pleural effusion, especially complex atrial effusion, are greatly improved, and important clinical value and social significance are achieved.

The utility model discloses a fast puncture type thoracic cavity closed drainage device which comprises a main hose, a built-in hard tube and a closed drainage bag, a conical section is arranged at the front end of the main hose, the front end of the conical section is open, a blunt round head is arranged at the front end of the built-in hard tube, and the outer end of the blunt round head is closed. A drainage hole is formed in the side wall of the front end of the blunt round head extending out of the outer side of the opening of the conical section. The conical section is provided with a plurality of first side holes, and the blunt round head is provided with a plurality of second side holes in one-to-one correspondence with the first side holes. The built-in hard tube is hollow, the head of the built-in hard tube is blunt and round, the built-in hard tube is provided with a drainage hole, gas and liquid drained through the drainage hole can be pre-judged to enter the pleural cavity safely, the built-in sleeve is withdrawn and the main hose is pushed to enter the pleural cavity after puncture succeeds, damage to internal thoracic organs is effectively avoided, the safety of puncture operation is effectively improved, the main hose is of a pen point type design, and the safety of puncture operation is improved. And after puncturing into the pleural cavity, the built-in cannula is withdrawn to finish the catheter indwelling operation, so that the catheter indwelling operation time is shortened.

This invention provides a disposable laparoscopic trocar and method, relating to the field of laparoscopic trocars. The invention includes an outer tube, the upper end of which is fixedly connected to a housing. A trocar is mounted on the upper surface of the housing. A fixing ring is arranged around the outer tube, and a fixing device is provided on the inner wall of the fixing ring. A limiting device is provided on the inner surface of the fixing ring. The fixing ring, by fixing the outer tube around the puncture site, reduces the pressure of the inflated pleural cavity on the skin around the puncture site, reducing the possibility of wound tearing at the puncture site. The fixing ring, fixing device, and limiting device provide a certain degree of fixation to the outer tube, reducing secondary wound damage caused by repeated adjustments to the outer tube's tilt. The adjusting device allows for adjustment of the insertion depth of the outer tube into the abdominal cavity and facilitates fixation, improving operational efficiency.

A method for planning and guiding an endoscopic procedure is disclosed. The method includes obtaining a first scan of a thoracic cavity near a total lung volume, obtaining a second scan of the thoracic cavity near a functional residual volume, generating a virtual thoracic cavity based at least in part on the first scan and the second scan, defining one or more regions of interest (ROI) in the virtual thoracic cavity, and determining a path to the one or more ROIs based on the virtual thoracic cavity. The method includes directing endoscopic hardware through an airway to the one or more ROIs along the predetermined path, monitoring, by a processor, a real-time position of the endoscopic hardware relative to an expected position on the predetermined path, and when the real-time position of the endoscopic hardware corresponds to an expected ROI position, transmitting the one or more ROIs to the one or more ROIs. And checking the one or more ROIs (Region Of Interest).

The invention relates to an internal medicine thoracoscope operation training model capable of judging puncture correctness and a manufacturing method. The internal medicine thoracoscope operation training model comprises an outer contour module, a rib module, a lung lobe module, a wall pleura and dirty pleura module and a pressure sensor. The outer contour module comprises a skin layer, a fat layer and a muscle layer which are connected in sequence; the rib module is located in the outer contour module and connected with the muscle layer; the lung lobe module is located in a space defined by the rib module; the wall pleural membrane and dirty pleural membrane module constructs a pleural cavity bag, the pleural cavity bag is located between the rib module and the lung lobe module, and the pleural cavity bag is filled with liquid simulating pleural fluid; the pressure sensor is arranged at the lower edge position of a target rib in the rib module and used for detecting and outputting a pressure value generated when the puncture needle extrudes the lower edge of the target rib. Students can be trained to avoid the lower edge of the rib, nerves and blood vessels are prevented from being damaged, the puncture accuracy, safety and the ability to cope with different conditions of the students are integrally improved, and the complication risk in an actual operation is effectively reduced.

The present application belongs to the field of artificial pneumothorax making device, and particularly relates to an artificial pneumothorax puncture device for chest wall puncture and establishment of a pleural cavity channel. In view of the defects that the existing puncture needle is easy to puncture the visceral pleura, the position of the needle tip is ambiguous, iatrogenic pneumothorax, gas embolism and other complications are easily caused, and the puncture needle cannot be adapted to high-risk patients such as emphysema, the present application adopts a coaxial structure, designs a blunt and smooth pneumothorax needle, and / or increases the contact area of the front end of the outer sleeve tube with the visceral pleura, cooperates with the side wall vent hole to realize direct positioning of the pleural cavity negative pressure, integrates double operation paths, and is matched with frosted development, scale marking and other optimizations. The device can greatly reduce the risk of complications, expand the applicable population, shorten the positioning time, balance the operation flexibility and accuracy, and effectively improve the safety and efficiency of the artificial pneumothorax operation.

The present application belongs to the technical field of holographic breath analysis, and discloses a non-contact respiratory mechanics reverse reconstruction system based on 4D holographic field perception, which comprises the following steps: receiving the echo sequence of a millimeter wave sparse aperture array to the chest and abdominal area, generating a 4D point cloud sequence of the time-varying shape of the chest and abdominal surface according to frames, and constructing a respiratory observation sequence of the chest and abdominal surface; by analyzing the correlation between the length change attribute of the geodesic line and the energy change attribute of the curvature tensor evolution sequence, a respiratory driving feature is generated; according to the time change of the chest and abdominal area in the respiratory driving feature, an observation confidence is obtained; the respiratory driving feature is input into a reverse reconstruction network containing a nonlinear viscoelastic respiratory dynamics constraint, and a mechanical parameter set of airway resistance and pleural cavity pressure change is output. The present application converts 4D morphological observation into structured boundary excitation, and uses observation confidence to weight the constraint inversion process, enhances the complete expression of inhalation and exhalation driving, and improves the stability and reliability of the mechanical parameter output.

The invention belongs to the field of medical instruments and provides a controllable first-aid pneumothorax needle which comprises an exhaust pipe, a puncture needle tube is fixedly mounted at the bottom end of the exhaust pipe, a needle handle is mounted in the middle of the top end of the exhaust pipe, and the middle of the bottom end of the needle handle extends out of the puncture needle tube to be fixedly connected with a long needle tip. The sensing mechanism is used for judging whether the long needle point penetrates the pleural wall layer or not and comprises a fixed inner cavity, the fixed inner cavity is formed in the bottom of the long needle point, and the bottom end of the fixed inner cavity extends out of the long needle point and is symmetrically provided with air inlet pipe openings in a penetrating mode; through cooperation of the fixed inner cavity, the hollow ball, the pressure sensor and the induction lamp, when the long needle point penetrates through the pleural wall layer, air in the chest enters the fixed inner cavity through the air inlet pipe opening, the hollow ball is pushed to extrude the pressure sensor, the induction lamp is turned on, objective and accurate penetrating feedback is provided for operators, dependence on subjective'breakthrough 'is avoided, and the safety of the operators is improved. The misjudgment risk is reduced, and the first-aid accuracy is improved.

The utility model relates to the technical field of medical instruments, in particular to a thoracoscope ultramicro wound aspirator which comprises a thoracoscope aspirator and further comprises an aspirator tube, one end of the aspirator tube is connected with one end of the thoracoscope aspirator, the aspirator tube is further provided with a first side hole, and the first side hole is arranged close to the end of the thoracoscope aspirator; the thoracoscope ultramicro wound aspirator is novel in structure, can prevent the situation that the operation view is affected due to the fact that the lung is excessively expanded during ventilation of a single lung, can increase negative pressure of a pleural cavity to avoid pulmonary atelectasis during ventilation of double lungs, and meanwhile, can be used for aspirating the double lungs, and can be used for aspirating the double lungs. The angle of the suture needle can be quickly adjusted in the pleural cavity, continuous suture is facilitated, unnecessary side injury caused by repeated access of the suture needle to the chest is avoided, free chest tissues such as lung tissues, arteriovenous and trachea can be assisted, and unnecessary fatal injury such as massive hemorrhage can be reduced.

The invention belongs to the technical field of holographic respiration analysis, and discloses a non-contact respiratory mechanics reverse reconstruction system based on 4D holographic field perception. Comprising the following steps: receiving an echo sequence of a millimeter wave sparse aperture array to a thoracico-abdominal region, generating a 4D point cloud sequence of a time-varying form of the thoracico-abdominal surface according to frames, and constructing a respiration observation sequence of the thoracico-abdominal surface; by analyzing the relevance between the geodesic length change attribute and the curvature tensor evolution sequence energy change attribute, respiration driving characteristics are generated; obtaining an observation confidence coefficient according to the time change of the thoracic and abdominal region in the respiration driving characteristics; and inputting the respiration driving characteristics into a reverse reconstruction network containing nonlinear viscoelastic respiration dynamic constraints, and outputting a mechanical parameter set of airway resistance and pleural cavity pressure change. According to the method, 4D morphological observation is converted into structured boundary excitation, and the inversion process is weighted and constrained by observation confidence, so that the inspiration driving expression integrity is enhanced, and the stability and credibility of mechanical parameter output are improved.

The utility model relates to the technical field of human organ simulation instruments, and provides a pleural cavity simulator which comprises a simulation thorax and a simulation lung arranged in the simulation thorax, a simulation pleural cavity is formed between the simulation thorax and the simulation lung, a drainage tube is arranged in the simulation pleural cavity, and an air supply cylinder is arranged at the output end of the drainage tube. The air supply cylinder is communicated with external air supply equipment, an air supply cavity is formed in the air supply cylinder, a piston is movably arranged in the air supply cavity, and under the action of the external air supply equipment, the piston is pushed to move, so that air in the air supply cavity circulates into the simulated pleural cavity through the drainage tube, and the simulated pleural cavity realizes external expansion movement. The pleural cavity simulator is simple in structure, can solve the problems that an existing pleural cavity simulator is complex in structure and the structure of the pleural cavity cannot be visually observed, and can also be applied to health education of patients in the clinical perioperative period.

The invention relates to a kit for detecting methylation of SHOX2, PTGER4, SEPTIN9 and HOXA9 genes in pleural effusion or seroperitoneal effusion, and designs a primer pair and a probe aiming at methylation of the genes, and the kit has excellent sensitivity and specificity and can be used for auxiliary diagnosis of benign and malignant identification of pleural effusion and seroperitoneal effusion.

The invention discloses a drainage and drug delivery integrated system for malignant pleural effusion and a control method thereof.The drainage and drug delivery integrated system comprises a catheter assembly, the catheter assembly comprises a catheter body, one end of the catheter body is a thoracic cavity end, and the other end of the catheter body is an in-vitro end; an inner cavity of the tube body is divided into a drainage cavity, a dosing cavity and a sampling cavity; the in-vitro connecting unit comprises a drainage device, a dosing device and a sampling device; the drainage device is communicated with the drainage cavity through the drainage tube to form a drainage loop; the dosing device is communicated with the dosing cavity through a dosing pipe to form a dosing loop; the sampler is communicated with the sampling cavity through a sampling pipe to form a sampling loop; the valve control assembly comprises a drainage valve on the drainage loop, a dosing valve on the dosing loop and a sampling valve on the sampling loop; the monitoring assembly comprises a monitoring controller, and the monitoring controller is in communication connection with the valve control assembly so as to switch the drainage loop, the dosing loop or the sampling loop; and the monitoring controller is electrically connected with the dosing device to regulate and control the dosing amount. The drainage, dosing and sampling of pleural effusion can be realized on the premise that a pipeline is not disconnected.

The utility model discloses a thoracic cavity closed drainage puncture device which comprises a puncture inner core, a chest wall indwelling tube and a pleural cavity imbedding detection mechanism, the pleural cavity imbedding detection mechanism comprises a hollow tube cavity arranged in the tube wall of the chest wall indwelling tube, and the lower end of the hollow tube cavity is communicated with an air exhaust through hole. And the upper end of the hollow pipe cavity is communicated with an air and liquid extraction pipe. Whether the chest wall indwelling tube is inserted into the pleural cavity or not, namely whether the chest wall indwelling tube is in place or not, is judged in an auxiliary mode according to the suction condition of the injector barrel arranged in the pleural cavity detection mechanism on gas or liquid in the pleural cavity, for example, if the injector barrel cannot conduct suction, it shows that the chest wall indwelling tube is not inserted into the pleural cavity yet, and if not, the chest wall indwelling tube is not inserted into the pleural cavity, and the chest wall indwelling tube is not inserted into the pleural cavity. If the syringe tube sucks liquid or gas, the chest wall indwelling tube is inserted into the pleural cavity, and the operation is simple and convenient. And the depth of the drainage tube inserted into the tissue can be visually judged according to the scale values on the chest wall indwelling tube, so that the probability that the drainage tube enters the chest wall subcutaneous skin by mistake is reduced.

This invention relates to the field of medical device technology and discloses an integrated thoracentesis assembly, including a drainage tube and a display. A puncture needle is disposed within the drainage tube, and the front end of the puncture needle has a puncture needle expansion section. The expansion section includes a self-puncture tip, a tapered expansion segment, and a main body segment. The puncture needle enters the pleural cavity through the expansion section, eliminating the need for guidewire insertion and dilation, eliminating the window period, preventing air from entering the pleural cavity, and reducing the risk of repeated punctures and infection. This invention achieves one-step puncture and catheter placement by overlapping the puncture needle and drainage tube, inserting them simultaneously during puncture, removing the inner core after successful insertion, and leaving the outer tube in place. This eliminates the need for guidewire insertion and dilation, significantly simplifying the operation. The drainage tube is equipped with a valve-type one-way valve to maintain a seal during puncture, solving the problem of tissue debris blockage in the absence of a needle core.

The invention discloses an external needle fitting type flow-speed-adjustable Y-shaped closed puncture device, and belongs to the field of medical instruments, the device adopts an integrated design of an external needle and a drainage tube, the complex steps of using a guide wire and a skin expander in the traditional operation are avoided, the drainage tube is synchronously placed in the puncture process, and the puncture efficiency is improved. The operation process is obviously simplified; and the infection risk is reduced. The flow speed adjusting device flexibly controls the flow speed of liquid through a Robert clamp, is simple in design and convenient to operate, and can effectively reduce complications caused by too high flow speed. The Y-shaped drainage tube structure achieves separation of the drainage outlet and the liquid medicine injection opening, cross contamination is prevented, and the treatment safety of a patient is improved through reliable leakproofness and anti-infection capacity. The device integrates operation simplification, flexible regulation and control and efficient sealing, is suitable for clinical scenes such as drainage of pleural cavity, abdominal cavity and pericardial effusion, and has remarkable innovativeness and wide clinical application value.

The invention provides a construction system and device of a tension pneumothorax non-human animal model. The system comprises a fixing unit used for fixing a non-human animal; the first processing unit is used for enabling the puncture needle to puncture the wall layer pleura, enabling the guide wire to enter the pleura cavity through the puncture needle cavity and withdrawing the puncture needle; the second processing unit is used for inserting the catheter along the guide wire, enabling the catheter to enter the pleural cavity, pulling out the guide wire and fixing the catheter; the third processing unit is used for injecting air into the pleural cavity in a one-way mode through the catheter; and the fourth processing unit is used for monitoring a pneumothorax range, judging tension pneumothorax when the lung sliding of a more than or equal to 4 / 6 area of the chest of the air injection side disappears and a lung point is seen, stopping air injection, and obtaining a tension pneumothorax non-human animal model. According to the method, the construction success rate is 100%, the construction process is rapid and repeatable, judgment is objective, and a rapid and repeatable platform can be provided for diagnosis research and decompression technology evaluation and training.

The utility model provides a pleural cavity pressure measurement simulation device. The pleural cavity pressure measurement simulation device comprises a carrier plate, a simulation head part, a simulation chest part and a simulation stomach part, an oral cavity channel and a nasal cavity channel are arranged in the simulated head; the simulated chest comprises a simulated esophagus, a simulated lung, a simulated trachea and a bronchus, the simulated chest is sealed by adopting a simulated chest cavity, a pressure sensor is arranged at a position corresponding to a pleural cavity, and a trachea cannula connecting port is arranged on the simulated trachea; the simulated esophagus is communicated with the oral cavity channel, the nasal cavity channel and the simulated stomach, and a prompt sensor is arranged at the position of two thirds of the middle lower portion of the simulated esophagus. The device can display the pressure condition in the thoracic cavity in real time, the simulated tracheal bronchus is connected with the simulated lung and can be connected with a breathing machine to simulate autonomous respiration and positive pressure ventilation conditions, and meanwhile, an esophageal pressure catheter can be placed through the nasal cavity to simulate how to determine the position of the esophageal pressure catheter. Meanwhile, the difference between the pressure measured by the esophageal catheter and the directly measured pressure is determined.