46 results about "Heart cavity" patented technology

The invention discloses a negative pressure suction sheath and a negative pressure suction assembly, and relates to the technical field of medical instruments, the negative pressure suction sheath comprises an insertion tube, a sheath base and a sealing element, the sheath base is arranged at the near end of the insertion tube and is communicated with the insertion tube, and the sealing element is arranged on the sheath base, is in sealing fit with the sheath base and / or the insertion tube, and blocks the near end of the insertion tube from being communicated with the outside. The insertion tube can be inserted into a human body, such as a pelvis and a bladder. The sealing piece can isolate the insertion channel from the external environment, and the insertion tube is communicated with the ureter and extends to the renal pelvis. At the moment, the sealing piece can prevent the insertion channel of the insertion tube from being directly communicated with the outside, so that the internal pressure of the insertion channel, the human body cavity and the organs is effectively maintained, the internal pressure change amplitude and range of the human body cavity and the organs are reduced, and the internal pressure change of the human body cavity and the organs is stabilized; and the probability of bleeding of human body cavities and organs due to severe pressure change is effectively reduced, so that the onset risk of complications is reduced.

The invention discloses a drug delivery device in a human body cavity, which comprises an inflatable balloon, at least one part of the outer wall of the balloon is provided with a protective shell, the balloon is provided with an inner cavity, and the protective shell can be dissolved by specific body fluid in the human body cavity; the triggering part is arranged in an inner cavity of the balloon, and the triggering part can react with body fluid to generate fluid to inflate the balloon when making contact with the body fluid, so that the inflated balloon is tightly attached to the wall of a body cavity; the propelling part is arranged in the inner cavity of the balloon and comprises a tissue penetrating component, and the triggering part can generate power to propel the tissue penetrating component; and the containing part is used for containing a medicine preparation, and the triggering part can push and press the liquid medicine preparation contained in the containing part into the pushing part after the balloon is inflated, and injects the liquid medicine preparation into the inner wall tissue of the human body cavity through the tissue penetrating component. By means of the device, macromolecular drugs or preparations can be injected into the inner wall of the human body cavity, such as the tissue of the intestinal wall.

The catheter head end comprises an ultrasonic unit, two magnetic positioning sensors and a protective layer wrapping the ultrasonic unit and the magnetic positioning sensors, each magnetic positioning sensor is a five-degree-of-freedom sensor, the two magnetic positioning sensors are arranged in an X shape, and the included angle is larger than or equal to 40 degrees. The utility model discloses an intracardiac ultrasound catheter with the catheter head end. Compared with the prior art, the intracardiac ultrasound catheter and the catheter head end are provided with the two magnetic positioning sensors with five degrees of freedom, the two magnetic positioning sensors are arranged in the X shape, and the included angle is larger than or equal to 40 degrees. Compared with the prior art, the intracardiac ultrasound catheter and the catheter head end can achieve higher spin angle precision, further have higher positioning precision and enable the ultrasound unit to accurately reach a lesion position.

The invention relates to the technical field of medical instruments, in particular to a ureter leading-in sheath with real-time pressure monitoring capability, which comprises a sheath tube and a sheath seat arranged at the near end of the sheath tube, the sheath seat is provided with a perfusion joint and a suction joint, and the sheath tube defines a channel for an instrument to pass through; the resistance detection piece is arranged on the sheath and is used for detecting the axial propelling resistance borne by the sheath tube when the sheath tube enters the human body cavity in real time and generating a resistance signal; the torque detection piece is arranged on the sheath and used for detecting the circumferential torque borne by the sheath tube when the sheath tube rotates in the human body cavity in real time and generating a torque signal; by arranging the detection system composed of the resistance detection piece, the torque detection piece and the pressure detection piece, objective operation guidance and over-limit early warning can be provided through real-time and quantitative force and pressure monitoring, and the risk of ureteral injury and renal pelvis high pressure related complications is greatly reduced.

The utility model provides a magnetic positioning system for an intracardiac ultrasound catheter, which is characterized by comprising a puncture needle, a mechanical arm and a magnetic positioning device, the ultrasonic catheter is an independent tubular device, and an ultrasonic device and a magnetic device are embedded in a far-end catheter body of the ultrasonic catheter; and a robot arm. The mechanical arm is provided with three modules: a signal acquisition module comprising an in-vitro sensing device; the position calculation module comprises a processor and a memory in which a target positioning algorithm is stored; and the catheter tracking module comprises a PID control chip. The magnetic device is arranged in the ultrasonic catheter, and the sensing device is arranged at the tail end of the mechanical arm, so that the system structure is simpler, and the positioning accuracy can be better guaranteed.

The application discloses a torsion transmission element and an ultrasonic probe. The torsion transmission element has bending flexibility and can transmit a torsion force applied to one axial end to another axial end. The torsion transmission element is formed by coaxially and spirally winding a plurality of spring wires and at least one first signal line, and the first signal line is used for transmitting an electric signal. The torsion transmission element replaces one or more spring wires with the first signal line, and thus, whether the inner hole diameter of the torsion transmission element can allow the signal line to pass through does not need to be considered. In the case that the torsion transmission element has signal transmission capability, the outer diameter of the torsion transmission element can be smaller, and thus, it is beneficial to manufacture a smaller-diameter catheter, an ultrasonic probe and other interventional medical devices which need to be inserted into a human body cavity.

The invention discloses a drug delivery device in a human body cavity, which comprises an inflatable balloon, at least one part of the outer wall of the balloon is provided with a protective shell, the balloon is provided with an inner cavity, and the protective shell can be dissolved by specific body fluid in the human body cavity; the triggering part is arranged in an inner cavity of the balloon, and the triggering part can react with body fluid to generate fluid to inflate the balloon when making contact with the body fluid, so that the inflated balloon is tightly attached to the wall of a body cavity; the propelling part is arranged in the inner cavity of the balloon and comprises a tissue penetrating component, and the triggering part can generate power to propel the tissue penetrating component; and the containing part is used for containing a medicine preparation, and the triggering part can push and press the liquid medicine preparation contained in the containing part into the pushing part after the balloon is inflated, and injects the liquid medicine preparation into the inner wall tissue of the human body cavity through the tissue penetrating component. By means of the device, macromolecular drugs or preparations can be injected into the inner wall of the human body cavity, such as the tissue of the intestinal wall.

The utility model discloses a trachea cannula which comprises a main tube body and a bronchus blocking tube connected to the end portion of the main tube body, and the end, away from the bronchus blocking tube, of the main tube body is connected with a trachea cannula connector used for being connected with equipment such as an external breathing machine. A balloon unit is sleeved on the main tube body and the bronchus blocking tube, and a camera unit, a flushing unit and an inflating unit matched with the balloon unit are arranged in the main tube body close to the trachea cannula joint; a light source unit used for illumination is arranged on the camera shooting unit, an anti-fog structure is further arranged on the camera shooting unit, the main catheter body is sleeved with a fixing unit used for fixing the mouth of a patient, and the fixing unit is movably arranged on the main catheter body. The trachea cannula is reasonable in structural design, the camera is arranged on the main catheter body, the situation that the front end of the trachea cannula damages a human body cavity due to blind insertion is avoided, the safety and the success rate of an operation are improved, the intubation time is effectively shortened, and the pain of a patient is relieved; and the light source unit and the anti-fog structure can better assist the intubation work.

The invention discloses a drug delivery device in a human body cavity, which comprises an inflatable balloon, at least one part of the outer wall of the balloon is provided with a protective shell, the balloon is provided with an inner cavity, and the protective shell can be dissolved by specific body fluid in the human body cavity; the triggering part is arranged in an inner cavity of the balloon, and the triggering part can react with body fluid to generate fluid to inflate the balloon when making contact with the body fluid, so that the inflated balloon is tightly attached to the wall of a body cavity; the propelling part is arranged in the inner cavity of the balloon and comprises a tissue penetrating component, and the triggering part can generate power to propel the tissue penetrating component; and the containing part is used for containing a medicine preparation, and the triggering part can push and press the liquid medicine preparation contained in the containing part into the pushing part after the balloon is inflated, and injects the liquid medicine preparation into the inner wall tissue of the human body cavity through the tissue penetrating component. By means of the device, macromolecular drugs or preparations can be injected into the inner wall of the human body cavity, such as the tissue of the intestinal wall.

1. Name of this design product: Intracardiac ultrasound catheter handle. 2. Purpose of this design: Handle component for intracardiac ultrasound catheters. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A system comprises a catheter configured for delivery to a body cavity defined by surrounding tissue; a plurality of ultrasound transducers coupled to a distal end of the catheter; and an electronics module configured to selectively turn on / off each ultrasound transducer according to a predetermined activation sequence and to process signals received from each ultrasound transducer to produce at least a 2D display of the surrounding tissue. A user can selectively calculate and display various aspects of cardiac activity. The user can display Dipole Density (DDM), Charge Density (CDM), or Voltage (V-V). The shape and location of the chamber (surface), and the potentials recorded at electrodes can be displayed. The system can also change back and forth between the different display modes, and with post processing tools, can change how various types of information is displayed. Methods are also provided.

The invention discloses an operation method suitable for electrophysiological detection in cardiac cavities of rats / mice, and relates to the technical field of experimental animal medical detection, and the operation method comprises the following steps: anesthesia of rats / mice, supine position fixation, and neck skin preparation and hair removal; separating the neck artery of the rat / mouse, ligating the artery blood vessel at the telecentric end, and clamping the artery blood vessel at the proximal end by using an artery clamp; the artery blood vessel in the middle section is temporarily retained after being punctured by an L-shaped guide needle, and the electrophysiology catheter is inserted along the notch; slowly moving the electrode catheter into the left ventricle, fixing the electrode catheter, and performing electrophysiological detection. According to the method, the detection electrode is inserted from the neck artery, the detection electrode is sent into the heart cavity of the rat / mouse, the integrity of the heart organ is not damaged, the risk of cardiac bleeding is avoided, accurate electrocardio data can be detected for a long time, meanwhile, after one carotid artery is cut off, the rat / mouse can maintain basic physiological activities through the other carotid artery, and therefore the detection effect is good. Continuous electrocardio detection can be carried out so as to complete the whole set of electrocardio recording.

The utility model provides an automatic constant pressure operation power device in a planing cavity, which comprises a main machine, a planing handle and a control pedal, a peristaltic pump and a suction pump are arranged on the main machine, the peristaltic pump and the suction pump are respectively arranged on the right side and inside the main machine, and pressure detection devices are embedded in the peristaltic pump and the suction pump. The water injection pressure and the negative pressure suction water pressure of the peristaltic pump can be automatically controlled through the pressure detection devices on the peristaltic pump and the suction pump, so that the water pressure in the operation environment in the human body cavity can be ensured to be constant, and the phenomena of collapse in the human body cavity, loss of the operation view and operation accidents caused by excessive sucked water are avoided; and water poisoning caused by the fact that flushing liquid is pressed into a wound due to overhigh pressure in a human body cavity caused by excessive water injection is avoided.

The utility model discloses an intracardiac ultrasound catheter and a control handle. The control handle comprises a fixing mechanism, a rotating mechanism and a self-locking mechanism. The rotating mechanism is movably connected to the fixing mechanism, can rotate around the self axis longitudinally arranged along the control handle, and comprises a front stay wire fixing piece and a rear stay wire fixing piece which are respectively used for fixing one pair of stay wires and driving the corresponding stay wires to longitudinally move along the control handle through rotation; the deformation of the front end of the catheter body is controlled by controlling the tensioning and loosening of the corresponding stay wire, so that bending shapes with different angles are generated; the self-locking mechanism comprises a wave-shaped gasket and two movable gaskets, and the wave-shaped gasket and the two movable gaskets are movably connected to the fixing mechanism and can rotate around the self axis longitudinally arranged along the control handle; the waveform gasket is located between the two movable gaskets and axially connected with the front stay wire fixing piece and the rear stay wire fixing piece in series so as to achieve self-locking of the control handle. The self-locking device is simple in structure, convenient to operate and good in self-locking effect.

The invention relates to a heart tissue ablation depth and range identification method and system based on a catheter position. The ablation depth identification method comprises the following steps: acquiring a cardiac cavity position of an ablation catheter and a cardiac muscle tissue thickness corresponding to the position, and establishing a relation function between a signal penetration energy threshold value required by a detection signal to penetrate through the cardiac muscle tissue and the ablation depth; setting a plurality of penetration signal energy levels for different set ablation depths based on the relation function; according to the sequence of the energy levels of the penetration signals from large to small, the ablation catheter is controlled to sequentially release the detection signals of the corresponding energy levels, and the obtained ablation depth is analyzed to be the set ablation depth corresponding to the detection signal with the minimum energy level of the received penetration signals. In combination with tissue thickness characteristics of different anatomical parts of the heart, detection signal energy levels are automatically distributed, and region matching and efficient detection are achieved. In addition, an ablation area model can be constructed in the detection process, and the real-time performance and accuracy of ablation integrity evaluation are improved.

The application discloses a motion control method and device based on visual guidance, and comprises the following steps: acquiring image information of a human body cavity; pre-processing the image; obtaining a cavity center of the human body cavity according to the pre-processed image information; obtaining a motion control strategy of a bronchoscope according to the cavity center; and adjusting the position and posture of the bronchoscope by a trachea cannula robot according to the motion control strategy, so that the bronchoscope moves towards the cavity center. The technical scheme of the application improves the efficiency and safety of a trachea cannula operation.

The invention relates to the technical field of tumor radiotherapy simulation training, and discloses gynecological tumor close-range radiotherapy simulation training teaching equipment, which comprises a model assembly, a source applicator assembly, a simulation assembly and an extrusion assembly, and is characterized in that the simulation assembly comprises a first annular frame, a second annular frame, a motor and a cylinder body, and the bottom of the second annular frame is fixedly provided with a gear ring; a motor shaft of the motor is rotationally provided with a gear through a connecting rod, the gear is meshed with the gear ring, the bottom end of the gear is fixedly provided with an air bag through a connecting piece, and a piston is arranged in the barrel in a sliding mode and divides the barrel into an upper cavity and a lower cavity which are not communicated with each other. The top end of the cylinder body is communicated with the air bag through a first connector, a guide pipe and a second connector. Through circular motion of the air bag, heating of the heater is combined with the high-expansion characteristic of helium, the air bag is pushed to expand, the dynamic position change and different sizes and forms of a tumor in a human body cavity can be vividly simulated, and the diversity characteristics of clinical focuses are restored.

The invention provides a conveying device and a medical system, and relates to the technical field of interventional medical instruments, the conveying device is used for conveying an implant (10) to target tissue (20) through a human body cavity or a pipeline, the conveying device comprises a container (100), an outer tube (200) and a release mechanism (300), the container (100) comprises an inner cavity used for containing the implant (10) and an outlet (110) used for discharging the implant; the outer pipe (200) is connected and communicated with the container (100); the releasing mechanism (300) comprises an inner pipe (310) and a control mechanism (400), and the control mechanism (400) is used for controlling the axial relative position relation of the inner pipe (310) and the container (100). The delivery and control of the implant (10) can be realized by adjusting the relative position of the inner tube (310) and the container (100), and the control convenience of the delivery device is remarkably improved.

The utility model relates to the field of surgical instruments, in particular to a medical puncture tube, which comprises an inner tube, a middle tube and an outer tube, the middle tube is a metal spring tube, and the outer tube is a TPU (thermoplastic polyurethane) heat shrink tube. And the inner pipe is a high polymer material pipe. According to the puncture tube, the outer tube is arranged on the outer wall of the middle tube, and the middle tube is wrapped by the outer tube, so that the puncture tube has a good pushing effect, and meanwhile, the inner wall of a human body cavity can be prevented from being scratched.

The utility model discloses a balloon catheter for releasing medicine in a human body cavity. The balloon catheter comprises an outer balloon and an inner balloon located in the outer balloon. The diameter of two ends of the outer balloon is larger than that of the middle; a plurality of rows of semi-through holes are formed in the outer balloon, each row of inner semi-through holes are formed in the longitudinal direction of the outer balloon, and a cutting mark is arranged between every two adjacent semi-through holes in each row; and the inner balloon is a three-stage expansion balloon. The double-layer balloon structure is adopted, in the process that the internal pressure of the inner balloon is gradually increased to push the outer balloon to be gradually expanded, two treatment means of medicine spraying and dilation are executed at the same time, and therefore the treatment effectiveness is improved; the use efficiency of the medicine can be ensured while the medicine can accurately act on the focus; compared with an existing treatment means, the application is wider in application range and non-invasive in treatment, foreign matter does not need to be implanted, an instrument does not need to enter a human body cavity for multiple times, and discomfort of a patient during treatment can be greatly reduced.

The application belongs to the technical field of medical devices, and particularly relates to a flexible endoscope autonomous path planning method, device and system, wherein the flexible endoscope autonomous path planning method comprises: pre-processing an endoscope image; obtaining a visual depth map from the endoscope image and constructing a three-dimensional point cloud map; identifying and contouring a target in the endoscope image to obtain target position information; fusing the three-dimensional point cloud map and the target position information to construct a dynamic environment model; generating a safe path according to the dynamic environment model and movement constraint conditions of an endoscope catheter; and using a deep deterministic policy gradient algorithm to generate a movement strategy according to a current environment state, with the safe path as a reference trajectory. Through visual depth recovery and reinforcement learning strategy, the application realizes real-time three-dimensional environment reconstruction, autonomous obstacle avoidance and accurate tracking of a moving target of the endoscope in a dynamic human body cavity.

The utility model relates to medical instrument technical field provides an ablation catheter, include: outer tube, inner tube subassembly, the proximal end of inner tube subassembly can be along the axial direction movement of outer tube is inserted in the outer tube, basket electrode subassembly includes a plurality of electrode arms, a plurality of electrode arms send out from the inner tube subassembly far end and gather in outer tube far end, the far end of inner tube subassembly has plane structure to make after the far end connection of inner tube subassembly and basket electrode subassembly in the plane end head of far end formation of ablation catheter. The utility model provides an ablation catheter, the far end of inner tube subassembly has plane structure to make after the far end connection of inner tube subassembly and basket electrode subassembly in the plane end head of far end formation of ablation catheter, compared with the ablation catheter in the prior art, because the far end of ablation catheter is plane end head, in the treatment process, when ablation catheter enters the heart cavity, can reduce the risk that ablation catheter head end punctures the inner wall of heart cavity.

The present application relates to the field of surgical device technology. In particular, the present application discloses a stiffness-variable flexible surgical operating arm, comprising a support body and a joint part. A surgical arm body is connected to the joint part. A force sensor is disposed at a junction between the support body and the joint part. The end of the joint part opposite to the junction is provided with an ultrasonic sensor, a camera module, and an illumination assembly, and an orientation sensor is provided near the axial center position of the joint part. The support body comprises a DEA sensing actuator and an SMP stiffness-variable layer, and a shape sensing sensor is provided near the SMP stiffness-variable layer and the DEA sensing actuator. The end surface of the joint part located at the ultrasonic sensor is provided with a working channel penetrating through the support body. The present application enables the joint part to deform through the DEA actuator and to adapt to a human body cavity environment, and can achieve accurate movement within the cavity with the aid of a series of sensors, thus allowing an end effector of the surgical operating arm to perform surgical operations on the lesion. The present application further provides a method suitable for operating the described operating arm.

A kind of feeding tube with visual and multi-direction guiding function simultaneously, it includes a catheter assembly, a guide wire assembly.The catheter assembly includes a tube body, the guide wire assembly includes a guide wire, a guiding assembly, a visual unit and a control assembly.The guiding assembly includes a rotating base, a swing base, a swing head, a pulling traction line, a driving gear and a rotating drive line.The control assembly includes a swing drive knob and a rotating drive assembly.The swing drive knob can control the swing head to swing left and right, and the rotating drive assembly can control the swing head to rotate in a circle.Thereby, the feeding tube can be navigated and adjusted in the process of inserting into the human body cavity, the whole clinical insertion operation is accelerated and optimized, the tissue image of insertion process and terminal position is shot, and the related internal cavity tissue can be simply observed for clinical analysis.

The invention relates to the technical field of medical images, and provides a method and equipment for reconstructing a personalized heart model with an infarction region, and a medium. The method comprises the following steps: preprocessing a heart magnetic resonance delay gadolinium enhanced CMR-LGE image of a patient to obtain a first high-resolution tag image containing a ventricular cavity and infarction tissue, and constructing a heart finite element mesh model based on high-precision heart cavity data of the patient; performing direction adjustment on the first high-resolution label image to obtain a second high-resolution label image; and mapping the infarction region in the second high-resolution label image into the heart finite element mesh model to obtain a personalized heart model with the infarction region. Based on the scheme of the invention, the accuracy of the reconstruction of the personalized heart model with the infarction region can be improved.

The utility model relates to the technical field of medical instruments, and provides a mesh basket electrode assembly and an ablation catheter, the mesh basket electrode assembly comprises a plurality of electrode arms, each electrode arm comprises a metal framework layer and an electrode layer arranged on the metal framework layer; and the skirt edges are arranged on the edges of the two sides of the electrode arm. According to the mesh basket electrode assembly, the edges of the two sides of the electrode arm are provided with the skirts, so that the electrode arm is provided with a soft boundary part, the risk that the electrode arm scratches a heart cavity intima and a blood vessel intima can be reduced in the ablation catheter discharge treatment and access process, and the mesh basket electrode assembly is safer and more friendly to tissue attachment.

The invention discloses an ablation catheter and an electrode dislocation identification method thereof, and relates to the technical field of pulse field ablation. The expandable assembly is arranged at the far end of the catheter shaft, and the expandable assembly can be driven by the catheter shaft to a designated position in a contraction state and then switched to an expansion state; each electrode assembly comprises an electrode body and a base layer which are fixedly connected, the electrode body is exposed out of the base layer, and a contrast agent is uniformly dispersed in the material of the base layer. According to the electrode assembly, the base layer is arranged on the inner side wall of the electrode body, and the contrast agent is uniformly dispersed in the material of the base layer, so that during X-ray fluoroscopy, an operator can be assisted to clearly observe the form of the electrode body and accurately judge whether the electrode assembly and the expandable assembly are continuously attached or not, the expandable assembly is prevented from being dragged into a sheathing canal rationally, and the working efficiency is improved. Even if the electrode assembly is separated from the expandable assembly, the electrode assembly cannot be further physically damaged, and the condition that electrode fragments are left in the heart cavity is effectively prevented.

The invention discloses a drug delivery device in a human body cavity, which comprises an inflatable balloon, at least one part of the outer wall of the balloon is provided with a protective shell, the balloon is provided with an inner cavity, and the protective shell can be dissolved by specific body fluid in the human body cavity; the triggering part is arranged in an inner cavity of the balloon, and the triggering part can react with body fluid to generate fluid to inflate the balloon when making contact with the body fluid, so that the inflated balloon is tightly attached to the wall of a body cavity; the propelling part is arranged in the inner cavity of the balloon and comprises a tissue penetrating component, and the triggering part can generate power to propel the tissue penetrating component; and the containing part is used for containing a medicine preparation, and the triggering part can push and press the liquid medicine preparation contained in the containing part into the pushing part after the balloon is inflated, and injects the liquid medicine preparation into the inner wall tissue of the human body cavity through the tissue penetrating component. By means of the device, macromolecular drugs or preparations can be injected into the inner wall of the human body cavity, such as the tissue of the intestinal wall.

1. Name of the product in this design: Intracardiac Ultrasonic Catheter Operating System. 2. Purpose of this design: For use in intracardiac ultrasound diagnosis. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a far-end discharge suspension electrode jet tube for atomizing enhanced active products. The far-end discharge suspension electrode jet tube comprises a dielectric tube, a PLA (polylactic acid) bracket, a ring electrode, a flexible tube I, an induction conductor and a flexible tube II, the problem that the discharge position is limited is solved, the device can flexibly act on deep tissues, complex cavities and long-distance targets, and far-end precise treatment is achieved. According to the invention, the active product can be enhanced and the ozone content can be reduced at the far end, the sterilization, anti-tumor and oxidation treatment effects are improved, and the risk of oxidative damage to tissues is reduced at the same time. The device has higher safety guarantee in clinical application and human body cavity operation. The flexible silicone tube has flexibility and biocompatibility and can safely enter a human body cavity or be attached to skin tissue, and tissue damage, rejection and discomfort are remarkably reduced. Meanwhile, the length of the flexible silicone tube can reach 2 meters, the flexible silicone tube can be arranged along with the bending form of the cavity channel, and accurate discharging of a deep target is achieved. The treatment effect is adjustable, the application range is wide, operation is easy and convenient, and controllability is high.