89 results about "Heart cavity" patented technology

The invention relates to the technical field of medical robots, in particular to an alimentary canal catheterization robot navigation method and system based on multi-modal information fusion. The method comprises the following steps: carrying out real-time data acquisition on a human body cavity by utilizing a multi-mode sensor; the collected multi-modal data is preprocessed; synthesizing multi-modal data, extracting cavity environment characteristics, and establishing a three-dimensional model of a human body cavity in real time; human body cavity environment characteristics are analyzed, and local and global paths are generated; outputting the path to a catheterization robot controller, driving a catheterization robot, monitoring a navigation abnormal state in real time, and collecting and storing the path, the sensor state and operation data in the navigation process; the system comprises a data acquisition module, a data processing module, a three-dimensional model establishment module, a path generation module and a data monitoring module. Through the mode, the environment is comprehensively perceived, the navigation precision and the real-time performance are improved, and the high-precision operation requirement in a clinical complex environment is met.

The utility model discloses a transcatheter intracardiac space occupying resection device which comprises a sheathing canal, a catheter and a guide wire. The occupied space storage mechanism is arranged in the sheath tube and is used for fixing and temporarily storing occupied spaces under the guidance of the sheath tube; and the occupying capturing and cutting mechanism is arranged in the sheath tube, connected with the occupying storage mechanism and used for capturing and cutting occupying. By puncturing the blood vessel, conveying the working guide wire and the working sheathing canal, releasing the capturing system and fixing and cutting the space-occupying lesion in the heart cavity by virtue of the negative pressure system, the minimally invasive and accurate excision of the space-occupying lesion is realized, the operation is simple and convenient, and the risk of tumor dissemination during the space-occupying excision is reduced.

The invention 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 invention provides a bipolar ablation device passing through a human body cavity and an operation method, and the device mainly comprises a needle core which is provided with a first ablation electrode; the needle tube is provided with a second ablation electrode; the needle core is arranged in the needle tube in a penetrating mode, the needle core and the needle tube can move synchronously, the needle core and the needle tube can move relatively, and the first ablation electrode can extend out of or be contained in the needle tube; when the first ablation electrode extends out of the needle tube, an adjustable preset distance is arranged between the first ablation electrode and the second ablation electrode, a puncture tip is arranged at the far end of the needle tube, and a smooth guide structure is arranged at the far end of the needle core, or the smooth guide structure is arranged at the far end of the needle tube, and the puncture tip is arranged at the far end of the needle core. By the adoption of the structure, the preset interval is adjusted to achieve adjustment of the ablation area so as to achieve coverage of a focus. Meanwhile, the smooth guide structure and the puncture tip are arranged on the needle core and the needle tube respectively, so that the puncture ablation capacity is achieved, and meanwhile the situation that in the conveying process, the puncture tip damages the blood vessels of the human body can be avoided.

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 invention provides an ultrasonic imaging ablation system and device, and relates to the technical field of medical instruments, the ultrasonic imaging ablation system comprises a system interface module and an ultrasonic imaging radiofrequency ablation catheter; a sheathing canal component of the ultrasonic imaging radiofrequency ablation catheter comprises a main control chip, an ultrasonic transducer and an ablation device. The main control chip and the ablation device are connected to the host through the system interface module; the system interface module is used for responding to the control mode of the host to control the conduction state of the first communication interface and / or the second communication interface so as to carry out signal transmission on the ultrasonic transducer; and / or the operation state of the ablation device is controlled. The radiofrequency ablation function and 4D intracardiac ultrasound imaging are integrated on the same catheter, the advantages of the radiofrequency ablation function and the 4D intracardiac ultrasound imaging can be combined, and the clinical operation process is simplified. The ultrasonic transducer of the same catheter can provide accurate positioning for the radiofrequency ablation position, and can better control the operation process by combining real-time imaging and a feedback mechanism, so that only a predetermined target area is influenced, and the misoperation risk is reduced.

The present invention relates to a suture-free puncture and drainage kit, comprising: a drainage kit and a puncture kit. The drainage kit comprises: a drainage tube, and a silicone pad sleeved on the drainage tube in an interference fit manner, wherein the drainage tube has a balloon surrounding the drainage tube; and the tail end of the drainage tube has an inflation interface and a drainage interface, the inflation interface being in communication with the balloon. The puncture kit comprises: a dilator, and a tearable sheath tube sleeved on the dilator, the inner diameter of the tearable sheath tube being larger than the outer diameter of the drainage tube. The beneficial effects lie in that due to the cooperation between the balloon on the drainage tube and silicone pad, suturing fixation is not required during drainage through the drainage tube, thus secure fixation can be achieved, and a penetration point can also be sealed, so as to isolate the human body cavity from contact with the external environment so as to avoid secondary injury and reduce the risk of infection; and the overall structure is simple, and the operation is convenient.

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 invention relates to the technical field of medical instruments, and provides an ablation catheter which comprises an outer tube and an inner tube. The near end of the inner tube assembly can be movably inserted into the outer tube in the axial direction of the outer tube; the mesh basket electrode assembly comprises a plurality of electrode arms, and the plurality of electrode arms are emitted from the far end of the inner tube assembly and are gathered together at the far end of the outer tube; the far end of the inner tube assembly is provided with a plane structure, so that a plane end is formed at the far end of the ablation catheter after the inner tube assembly is connected with the far end of the mesh basket electrode assembly. According to the ablation catheter provided by the invention, the far end of the inner tube assembly is provided with the plane structure, so that the plane end head is formed at the far end of the ablation catheter after the inner tube assembly is connected with the far end of the mesh basket electrode assembly. The risk that the head end of the ablation catheter punctures the inner wall of the heart cavity can be reduced.

Systems and methods of automatically controlling, on a graphical user interface used by a physician, display views of an anatomic structure of a patient. Such systems and methods of automatically controlling display views of an anatomic structure of a patient can facilitate visualizing a position of a medical device relative to the anatomic structure during a medical procedure directed to the anatomic structure. In certain implementations, the systems and methods of the present disclosure provide automatic display views of a cardiac catheter relative to a three-dimensional model of a patient's heart cavity during a medical procedure such as cardiac ablation.

The utility model relates to an electronic hysteroscope. The electronic hysteroscope comprises an insertion tube and a shell, the shell comprises a body part and a handle part, the handle part is connected with one end of the body part, an obtuse angle is formed between the handle part and the body part, the diameter of the two ends of the handle part is larger than that of the middle part of the handle part, and the two ends and the middle part of the handle part are in arc transition; one end of the insertion tube serves as an insertion end to enter a human body cavity, and the other end of the insertion tube serves as a fixed end to be connected with the other end of the body part. The electronic hysteroscope disclosed by the utility model is more in line with ergonomics, can relieve fatigue of wrists, arms or shoulders caused by long-time surgical operation, and improves the surgical accuracy and the safety of patients.

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 reversible long-acting hydrogel capable of being cured in situ in a human body cavity, the reversible long-acting hydrogel comprises hydrogel and a reversible reagent, after the hydrogel swells, long-acting blocking is achieved, after the reversible reagent is added, the hydrogel is degraded, and reversible recovery is achieved. According to the invention, 10wt%-60wt% of a polyethylene glycol derivative acid solution and 1wt%-10wt% of a polylysine alkaline solution are subjected to a cross-linking effect, and a formed cross-linked network can prevent cells from passing but cannot prevent body fluid and salt ions from passing, so that the long-acting contraception agent can be applied to seminiferous ducts and fallopian tubes to realize a long-acting contraception effect. The hydrogel has a certain degradation period and can meet the requirements of different contraception periods, when a patient has the fertility requirement in advance, a reversible reagent can be injected in situ to degrade the gel to achieve cavity restoration, and the hydrogel is fast in degradation, safe to use and good in biocompatibility.

The present invention provides an auxiliary feeding device for a cavity flushing and exploration tube body, which relates to the technical field of medical devices, and aims to solve the problems that the depth of the existing tube body entering the human body cavity needs to be estimated according to the doctor's experience, and during the process of the tube body entering the cavity, it is easy to cause damage to the human body cavity due to too fast insertion speed and too long insertion length. The device includes a pushing component and a detection structure arranged on one side of the pushing component. The pushing component at least includes a hollow main body and a push rod arranged in the main body, and a damping member is arranged between the main body and the push rod; a first cavity is arranged in the detection structure, and a second cavity communicated with the first cavity is arranged in the push rod, and the tube body extends from the second cavity into the first cavity; a scale is arranged on the pushing component. The present invention is used to make the depth of the tube body entering the cavity known and the speed controllable, so as to increase the controllability of the operation, improve the operation efficiency and avoid harm to the patient.

The medical catheter assembly can be used for atrial septum puncture and comprises an adjustable bending guide sheath assembly and an atrial septum puncture needle assembly. At least two ring electrodes are arranged at the far end of a sheath tube of the adjustable bending guide sheath tube assembly and used for collecting heart electrophysiological signals. Whether the far end of the sheathing canal successfully penetrates through the atrial septum or not is judged by comparing the electrophysiological signal change of the ring electrode before and after atrial septum puncture. And positioning sensors are respectively arranged on the far-end tube body and the near-end tube body of the sheathing canal close to the two ends of the adjustable bending section, and are used for determining the bending form of the sheathing canal and the position of the sheathing canal in the heart. The interatrial septum puncture needle assembly comprises a needle tube assembly and a sensor assembly. The sensor assembly comprises a puncture needle positioning sensor and is used for judging the position of a puncture needle tip and the relative positions of the puncture needle tip and other assemblies. The catheter assembly comprises the ring electrode and the magnetic positioning sensor, and heart cavity modeling can be completed without the magnetic positioning catheter after the sheathing canal enters the heart 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.

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.

Massage device, characterized in that it comprises: a massage body (100); wherein the massage body (100) comprises a mounting part (110) and a massage part (120) connected to the mounting part (110); the mounting part (110) defines a mounting cavity (113), and the massage part (120) defines a receiving cavity (121); the massage part (120) is configured to be inserted into a human body cavity to massage the human body cavity; a vibration assembly (200) disposed in the receiving cavity (121) and configured to vibrate the massage part (120); and an expansion massage structure (300); wherein the expansion massage structure (300) comprises a pneumatic system (310) and at least one expansion part (320); the pneumatic system (310) is arranged in the mounting cavity (113) and is configured to drive the at least one expansion part (320) to expand or contract; the at least one expansion part (320) is arranged at a periphery of the massage part (120) or at an end of the massage part (120) remote from the mounting part (110), and the at least one expansion part (320) is configured to be inserted into the human body cavity to massage the human body cavity.

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 invention discloses an endoscope and a front-end assembly and an insertion part thereof, and relates to the field of medical instruments, the front-end assembly comprises a front-end shell, a camera module, an acupuncture mechanism and a driving mechanism, the front-end shell is provided with a movable cavity, the camera module is arranged in the front-end shell, the acupuncture mechanism comprises a syringe and an injection needle, the syringe can slide into or out of the movable cavity, and the injection needle is arranged in the movable cavity. The syringe is provided with an injection cavity, the injection needle is slidably matched in the injection cavity, and the driving mechanism is in transmission connection with the syringe. The syringe slides out of the movable cavity, and the far end of the syringe can be located in the view field of the camera module. The medical staff can observe the position information of the syringe and the affected part at the same time, adjust the endoscope based on the information, and guide and adjust the insertion direction and the insertion position of the injection needle so as to ensure that the injection needle can accurately pierce the affected part. By means of the arrangement, the treatment effect can be improved, damage to other tissue is reduced, and the situation that the acupuncture effect of the acupuncture mechanism is affected due to bending, twisting and the like of the endoscope in the human body cavity is avoided.

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 present invention belongs to the technical field of energy ablation in human body cavities, and provides an ablation catheter suitable for ablation in human body cavities, comprising: a guiding delivery catheter provided with a first channel penetrating through both ends; an ablation electrode disposed at the distal end of the delivery catheter, which is a hollow structure, one end of the ablation electrode is connected to the delivery catheter, wherein the ablation electrode can be expanded and maintained in an expanded state; a control wire movably inserted into the first channel of the delivery catheter, both ends of the control wire respectively extend out of both ends of the delivery catheter, one end of the control wire is connected to the second end of the ablation electrode; a control handle connected to the proximal end of the delivery catheter, a moving component is provided in the control handle, the other end of the control wire is connected to the moving component, and the moving component drives the control wire to move relative to the delivery catheter, so that the two ends of the ablation electrode approach each other, enabling the ablation electrode to expand. By providing an expandable ablation electrode in this application, precise abutment between the ablation electrode and the lesion site of different-diameter cavities is achieved.