15 results about "Ablation radiofrequency" patented technology

The utility model relates to an electrode structure and radio frequency ablation cutter head. The electrode structure, including the insulating seat, electrode piece, with the insulating seat top surface is opposite, along the axial through opening has the suction hole and the limiting slot, the limiting slot is along the radial outward opening and forms the sharp angle between the limiting slot inner wall and the electrode piece outer peripheral surface, and electrode wire, two ends along the axial through the limiting slot to with the insulating seat fixed, to hold the electrode piece and limit between self and the insulating seat, because the electrode piece is held and limited through the electrode wire and the insulating seat, will not cause the loosing due to the pin corrosion, effectively improved the stability of the motor structure of the application, in addition, on one hand, the sharp angle structure can make the charge concentrate in the limiting slot edge, to realize directional ablation, ensure that the scrap is directional ablation as small particle, avoid the blockage, on the other hand, the limiting slot has the limiting effect to the electrode wire and directional ablation effect, improved the ablation efficiency of electrode structure whole.

The application discloses a non-contact pressure regulating radio frequency ablation catheter, which comprises an electrode base and a catheter electrode axially slidingly installed on the electrode base, a magnet is installed at the tail end of the catheter electrode, a semi-conductive coil assembly and a driving coil electrically connected with the semi-conductive coil assembly are installed on the electrode base, the semi-conductive coil assembly with semi-conductive characteristics is placed in an external alternating electromagnetic field and uses electromagnetic induction principle to supply the driving coil with induced current with consistent direction, so that the catheter electrode is pushed by the electrode base through the repulsive force between the driving coil and the magnet, and the catheter electrode at the head of the radio frequency ablation catheter can be driven to press the lesion tissue, so that the catheter electrode can efficiently heat and ablate the deep tissue of the lesion tissue, and the pressing pressure of the catheter electrode on the lesion tissue can be regulated by regulating the magnetic field strength of the external alternating electromagnetic field, so that the radio frequency ablation can be accurately completed.

The application belongs to the technical field of testing, and specifically provides a simulation device and a testing method for radio frequency ablation instrument testing. The simulation device for radio frequency ablation instrument testing comprises a water pool, a test model, a clamping mechanism and a driving mechanism. The test model is fixed in the water pool, and the driving mechanism drives the catheter to reciprocate along the test channel formed by the test model through the clamping mechanism to perform bending fatigue testing. The test model comprises a first test section and a second test section which are continuous but have opposite bending directions. During testing, the test section of the catheter can be subjected to bending fatigue testing in the first test section and the second test section in turn by changing the stroke range of the reciprocating motion of the test section of the catheter through the driving mechanism, and the rotation or re-clamping of the catheter is not required during the whole process. In this way, the manual operation steps are eliminated, which helps to realize the automation of the testing process, and the unattended operation can be realized during long-term durability testing.

The present application relates to a kind of radio frequency ablation equipment, it includes electrode, balloon and delivery tube;The electrode is in net shape, with the contraction state of being shrunk together when being constrained, and the expansion state of being automatically expanded outward when losing constraint, which is connected with the external electrical connector by electrode lead;The balloon is located in the inside of the electrode, and pushes against the electrode when in the inflation state;The delivery tube includes outer tube and inner tube, and the electrode lead is located between the outer tube and inner tube, and the delivery tube further includes balloon catheter communicated with one end of the balloon, which is located in the inside of the inner tube and has gap between the inner tube.When electrode is delivered to target position, it can be automatically unfolded and form good abutment effect with the inner wall of bronchus by the support of balloon.

The application relates to a radio frequency ablation composite electrode needle and relates to the ablation technical field.The radio frequency ablation composite electrode needle comprises a main needle, a sub needle and a handle assembly, the main needle comprises a needle head and a needle rod assembly; the needle head comprises a needle handle, a puncture needle tip located at the far end of the needle handle and a needle head inner cavity arranged in the puncture needle tip and the inner side of the needle handle; the needle rod assembly comprises a needle rod, a second inner tube and a first inner tube arranged in sequence from outside to inside, the sub needle is arranged between the second inner tube and the needle rod, and the outer surface of the second inner tube and the inner surface of the needle rod define a sub needle outer cavity; the sub needle comprises a sub needle inner cavity; first, second and third liquid cavities are arranged in sequence in the handle assembly; wherein the first liquid cavity is in fluid communication with the sub needle outer cavity; the second liquid cavity is in fluid communication with the sub needle inner cavity; a liquid circulation channel is formed between the third liquid cavity, the first inner tube, the needle head inner cavity and the second inner tube.

Provided in the present disclosure are a radio frequency ablation catheter and a radio frequency ablation system. The radio frequency ablation catheter comprises: a balloon, an inner tube, a guide wire tube, an outer sleeve, and a radio frequency electrode. A proximal end of the balloon is provided with a proximal tube section extending along a longitudinal axis thereof. The inner tube is provided with an inflation cavity and a guide wire tube penetration cavity that are not in communication with each other. A distal end of the inner tube is inserted into the proximal tube section, and the inner tube is hermetically connected to the proximal tube section. A distal end of the inflation cavity is in communication with an inner cavity of the balloon. A distal section portion of the guide wire tube extends from a distal end of the guide wire tube penetration cavity and extends to the inner cavity of the balloon, and the guide wire tube is hermetically connected to the guide wire tube penetration cavity. The outer sleeve sleeves the inner tube. A distal end of the outer sleeve is connected to the proximal tube section, and a gap is formed at the joint. A threading cavity between the outer sleeve and the inner tube is used for accommodating a cable. The radio frequency electrode has a distal ablation region and a proximal wiring region connected to the cable. From the proximal wiring region to the distal ablation region, the radio frequency electrode extends along the threading cavity to the gap, passes through the gap, and then extends against a surface of the proximal tube section to an outer surface of the balloon.

The application discloses a lung nodule positioning and ablation integrated device and method, which comprises a positioning and ablation needle, the positioning and ablation needle comprises an outer needle tube one, which is hollow inside and coated with an insulating layer on the surface; a positioning member made of a material with electric conductivity is arranged inside the outer needle tube one and used for being stabbed into a lung nodule and simultaneously serving as a radio frequency ablation electrode; a positioning guide wire made of a material with electric conductivity is coated with an insulating layer on the surface, and a hydrophilic coating layer is coated on the insulating layer; one end of the positioning guide wire is connected with the positioning member, and the other end of the positioning guide wire is led out from the inside of the outer needle tube one and connected with a radio frequency ablation device; and a pushing mechanism is sleeved on the positioning guide wire and used for pushing the positioning guide wire and stabbing the positioning member into the lung nodule. The application can solve the problems that the existing lung nodule positioning and radio frequency ablation need to be carried out in steps, the positioning is inaccurate, the lung nodule is prone to displacement and bleeding in the multiple puncture processes.

The application discloses a radio frequency ablation catheter and radio frequency ablation equipment, which is characterized in that a protection module is arranged between the catheter heating unit and the catheter body in the heating area. The protection module specifically comprises at least two parallel arranged conductive components which are separated by a temperature sensitive insulation layer. The physical state and / or chemical state of the temperature sensitive insulation layer can change when reaching or exceeding a preset temperature threshold, thereby destroying the electrical insulation state between the adjacent conductive components to form a detectable electrical state change. The control unit can execute the protection operation of reducing or cutting off the radio frequency energy output according to the electrical signal formed by the electrical state change. The protection module of the embodiment is equivalent to arranging countless potential overheating sensors in the whole heating area. No matter where the overheating occurs, it can be immediately sensed as long as the trigger temperature is reached. Moreover, the trigger of the protection mechanism is the direct result of the physical and / or chemical process, and the response speed is extremely fast.

This utility model relates to the field of medical aesthetics technology, specifically disclosing an ion radiofrequency ablation device for removing eye bags. The device includes a mask with a first cavity and a second cavity inside. The first cavity is located above the second cavity, and a connecting pipe connects the first and second cavities. An ablation component is located at the rear end of the mask. The ablation component includes a slider movably connected inside the first cavity, a connecting rod fixedly connected to the rear end of the slider, and a circular frame fixedly connected to the rear end of the connecting rod. A sealing block is movably connected inside the second cavity, and an ablation module is fixedly connected to the rear end of the sealing block. When performing ablation for eye bag removal after wearing the mask, the device ensures that the probe remains in close contact with the skin surface, preventing the distance between the probe and the skin from affecting the ablation process and causing burns or scalds, thereby improving the efficiency of the eye bag removal procedure.

The application discloses an endoscopic monopole plasma radio frequency ablation operation electrode knife head and belongs to the field of digestive and respiratory departments. The electrode knife head comprises a flexible part, an electrode head and a handle, one end of the flexible part is connected with the electrode head, the other end of the flexible part is connected with the handle through a protection sleeve, a water injection interface is arranged on the handle, the water injection interface is connected with a water injection hose, the front end of the handle is provided with the protection sleeve, a plurality of water outlet holes are arranged on the side surface of the electrode head, the flexible part comprises a plastic-coated multi-strand steel wire, a spring tube and an outer sheath tube, one end of the inner side of the electrode head extends to the inside of the flexible part and is connected with the plastic-coated multi-strand steel wire through a connecting pipe, a through groove is arranged on the connecting pipe, and cavities are formed between the outer walls of the plastic-coated multi-strand steel wire and the connecting pipe and the inner wall of the flexible part. The flexible support design of the spring tube and the outer sheath tube is combined, the endoscopic multi-angle steering requirement is adapted, the electrode knife head can be deeply inserted into a curved cavity or a complex anatomical site, and mechanical damage of a rigid instrument to the cavity can be avoided.

The utility model discloses a flexible radio frequency ablation electrode, include: shell, guide sleeve, flexible pipe, conductive slip ring and axial push, the shell is equipped with sliding installation part and handheld part, wherein the one side of sliding installation part is equipped with sliding channel along length direction, the guide sleeve can be slidably arranged in the sliding channel of shell, the flexible pipe is rotatable and axially position -limited and is arranged in the guide sleeve, and the one end of flexible pipe extends out the guide sleeve, and the flexible pipe is equipped with the electrically conductive body along the axial extension and fixed setting, the conductive slip ring includes outer connecting portion and rotatable installation on the rotating connecting shaft of outer connecting portion, and outer connecting portion is equipped with conductive touch end, and the rotating connecting axle is equipped with conductive connection end and rotating connection end, and the conductive touch end of outer connecting portion is electrically connected with the conductive connection end of rotating connecting axle. It can accurate control flexible pipe, and convenient operation reduces the operation difficulty.

The application discloses a surgical electrode for an electromagnetic knife, which comprises a front handle, a rear handle and an electrode core. A front end of the front handle is provided with an electrode outlet which can move along the axial direction of the front handle. The front handle and the rear handle are connected in a circumferential rotating mode. The electrode core is arranged in the interior of the front handle and the rear handle. A rear end of the electrode core is fixed in the interior of the rear handle and connected with a cable. The position of the electrode outlet is adjusted so that the front end of the electrode core extends out of the electrode outlet and accurately reaches a surgical area. The application solves the technical problems that the head of the existing bipolar radio frequency ablation electrode cannot be adjusted or the adjustment affects operation and the adjustment precision is low after the electrode enters a lesion area.

The application discloses a radio frequency ablation electrode real-time control device based on fusion of intracardiac ultrasound and magnetic navigation applied to the field of radio frequency ablation electrodes, and through the setting of the limiting clamping plate, the operator only needs to rotate the dial piece to drive the limiting clamping plate to slide in the clamping groove to the side close to the winding mechanism, so that the second wire groove and the first wire groove are close to each other, the traction line between the two is extruded, until the traction line is clamped and fixed, then the fixed bolt is screwed to complete the position locking of the limiting clamping plate, the winding and unwinding state of the traction line can be maintained, the form stability of the radio frequency ablation electrode ring can be maintained, the operator does not need to continuously maintain the tension control of the traction line, the operation burden in the operation is reduced; when the electrode ring form needs to be adjusted again, the fixed bolt is loosened, the limiting clamping plate is rotated to slide to the other side along the clamping groove, the clamping locking of the traction line is released, the winding and unwinding length of the traction line can be adjusted through the winding mechanism again, the fixed demand of any adjustment range can be adapted, and the use is more flexible.

Provided are a flexible electrode (22) for a radio frequency ablation catheter (100), the radio frequency ablation catheter (100), and a radio frequency ablation system. The flexible electrode (22) comprises: a flexible metal electrode layer (223), a liner layer (224), a first flexible conductor layer (226), a substrate layer (227), and a second flexible conductor layer (229) that are sequentially stacked. The liner layer (224) and the substrate layer (227) are made of a flexible insulating material. A power connection region of the flexible metal electrode layer (223) is configured to be connected to the distal end of a radio frequency cable of the radio frequency ablation catheter (100), and a radio frequency conduction region at the distal end of the flexible metal electrode layer (223) is configured to conduct radio frequency energy to a target tissue. The distal end of the substrate layer (227) is provided with an electrical connection part (2271). The distal end of the second flexible conductor layer (229) is electrically connected to the distal end of the first flexible conductor layer (226) by means of the electrical connection part (2271). In addition, the orthographic projections of junctions between the distal ends of both the first flexible conductor layer (226) and the second flexible conductor layer (229) and the electrical connection part (2271) on a first surface fall within the radio frequency conduction region, and the proximal ends of both the second flexible conductor layer (229) and the first flexible conductor layer (226) are configured to be respectively connected to the distal ends of two wires (40a, 40b) of the radio frequency ablation catheter to form a thermocouple circuit.