29 results about "Heart cavity" patented technology

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 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 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.

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 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.

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 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.

The present application relates to a kind of insertion structure and endoscope.The insertion structure includes: insertion tube, including spring tube, braided mesh and skin layer, the braided mesh is sleeved on the outside of the spring tube, the skin layer is sleeved on the outside of the braided mesh, and the spring tube is fixed at the braided mesh in the distal end;And adjusting mechanism, set in the proximal end of the insertion tube, and connect the proximal end of the spring tube, the adjusting mechanism can drive the spring tube movement to be in compression, stretch or in free state.By adjusting mechanism, the telescopic state of spring tube is adjusted, to change the bending force and hardness variation of insertion tube, so that insertion tube has different softness.When insertion tube enters human body cavity, adjusting mechanism adjusts the bending force of spring tube, facilitates the front insertion of insertion tube, so that insertion tube is more easily entered into human body cavity, reduce the pain of patient.

The application discloses a kind of conduit stereoscopic shaping device and its shaping method, by being arranged in the axial through heating groove, cooling groove and being located in the heart of molding groove on the two end surfaces of stereoscopic plastic device main body, and cooling groove is located in the radial outer side of heating groove, both are spaced apart with multiple along the circumference, condenser or air pipe is installed in cooling groove;Several screw holes for loading adjusting rod are opened on the side wall of stereoscopic plastic device main body, and screw hole passes through heating groove, cooling groove and reaches molding groove and is arranged with multiple layers along the axial direction on the side wall, and each layer screw hole is spaced apart with multiple along the circumference and is equipped with adjusting rod one by one, and adjusting rod is symmetrically distributed in pairs on the side wall, can be adjusted in real time to the molding angle of conduit in molding process, solve the problem that existing conduit molding mold cannot be adjusted again once determined and existing technology can only be plane shaped, so that conduit can be more matched with human body cavity, more easily make conduit reach surgical area quickly.

The utility model relates to the field of medical catheters used in human body cavities. The balloon switching device comprises a switching balloon, a switching device and a pushing device, the switching device comprises a switching front end and a switching rear end, the switching front end and the switching rear end are tubular, a spring button is arranged at the near end of the switching front end, a groove is formed in the position, corresponding to the spring button, of the inner wall of the switching front end, and a one-way barb is arranged at the far end of the switching rear end. The far end of the one-way barb is connected with the far end of the switching rear end, the near end of the one-way barb is a warped elastic piece, the near end of the switching balloon is bonded with the far end of the switching front end, and the near end of the switching rear end is bonded with the far end of the pushing device. A plurality of different types of products can be linked together in a free combination mode through the switching device, a doctor can select a corresponding capsule product to be directly connected with the pushing rod according to the actual situation of a patient, other products do not need to be called again for treatment, the multifunctional capsule set meets all the requirements of the doctor and the patient, and the use is convenient. Meanwhile, the operation cost is also reduced.

The application discloses a multi-tube segment variable rigidity magnetic drive catheter and surgical robot. The magnetic drive catheter comprises a distal small catheter (1) and a main catheter (2), the distal small catheter is connected at the distal end of the main catheter; the distal small catheter can be controlled to change rigidity, the distal small catheter comprises a certain number of sub-tube segments (11), the sub-tube segments are sequentially connected together in a head-to-tail mode; the sub-tube segment is composed of an inner tube body and an outer tube body, the material of the outer tube body is a shape memory polymer, a heating coil (4) is arranged in the outer tube body, and annular magnets (12) are uniformly and discretely distributed on the distal small catheter. The distal small catheter in the magnetic drive catheter can control the rigidity of each part through the mode of controlling temperature, then the attitude of the distal small catheter is controlled by using the magnet at the end of the mechanical arm of the surgical robot, the catheter based on the mode has a small outer diameter and can be stretched into a small human body cavity for treatment under the premise that the inner diameter of the working channel is not reduced.

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, the distal end of inner tube subassembly has plane structure to make after the distal end connection of inner tube subassembly and basket electrode subassembly forms plane end head in the distal end of ablation catheter, control handle, through control handle control basket electrode subassembly gathers or opens. The utility model provides ablation catheter, the distal end of inner tube subassembly has plane structure to make after the distal end connection of inner tube subassembly and basket electrode subassembly forms plane end head in the distal end of ablation catheter, compared with the ablation catheter in the prior art, because the distal end of ablation catheter is plane end head, during the treatment, when ablation catheter enters the heart cavity, can reduce the risk that ablation catheter head end punctures the inner wall of heart cavity.

A cavitary stimulation device for placement in a human body cavity, comprising a flexible, elongated shell body (1) made of an elastic material with an inner cavity (11) extending along a longitudinal axis for receiving an insertion body, characterized in that the inner cavity (11) is essentially free of tapering in a first cross-sectional plane along the longitudinal axis and narrows stepwise from proximal to distal in a second cross-sectional plane perpendicular to the first cross-sectional plane (11b, 11c), wherein the shell body (1) has a continuous ventilation opening at its outermost distal end, opening the inner cavity (11) axially outwards, such thatthat axial insertion of a dimensionally stable insertion body (2) with displacement venting of the cavity (11) causes a radial displacement of the shell body (1) outwards in the direction of the second cross-sectional plane.

The balloon dilatation traction fixing device comprises a catheter body, the catheter body is of a tubular structure with an opening in one end, and fluid is injected into the catheter body through the opening end after the closed end of the catheter body enters a human body cavity. A balloon is arranged on the outer wall of the closed end of the catheter body, and a net piece imbedding assembly and a needle holder are arranged in the catheter body. An extraperitoneal space is established in a balloon dilatation mode, so that the defects that a traditional vagina operation is narrow in view field, difficult to expose and inconvenient to operate are overcome, in addition, when the extraperitoneal space is established through the balloon, the mesh is conveniently placed, adjusted and fixed through cooperation of the mesh placement assembly and the needle holder, and the operation efficiency is improved. The fixing of the mesh is simplified, the establishment of an extraperitoneal space (gap) is also facilitated, and the whole-course quantification mode of the mesh ensures the operation effect and also can reduce the possibility of pain caused by incapability of quantifying the tightness of the mesh in the operation.

The present application belongs to the field of medical devices, and particularly relates to a hollow mapping electrode assembly, which comprises a guide wire, a mapping catheter and a locking device; the guide wire is hollow, and a guide wire wire is arranged in the hollow of the guide wire; a guide wire distal end electrode ring is arranged on the distal end side wall of the guide wire, and a guide wire proximal end electrode ring is arranged on the proximal end side wall of the guide wire; a mapping distal end electrode ring is arranged on the distal end side wall of the mapping catheter, and a mapping proximal end electrode ring is arranged on the proximal end side wall of the mapping catheter; the locking device comprises a tube body, a soft ring and a cap. The guide wire and the mapping catheter are used in cooperation, the number of electrodes can be expanded according to the situation, and larger range of mapping data can be collected; the distance between the guide wire distal end electrode ring and the mapping distal end electrode ring can be adjusted according to the situation; the locking device can lock the guide wire and the mapping catheter, prevent relative sliding of the guide wire and the mapping catheter, improve the stable shape of the electrode ring and the heart cavity tissue, and reduce the risk of falling off and displacement.