13 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 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.

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.

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 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 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.

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.