7results about How to "Improve ablation efficiency" 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.

This invention discloses a microwave ablation electrode, relating to the field of medical device technology. It mainly includes a main needle body, whose working end can release microwave energy to achieve microwave ablation. The main needle body is equipped with a non-working end circulating cooling structure and a working end liquid injection structure. The non-working end circulating cooling structure allows a cooling medium to reach the non-working end of the main needle body to cool the non-working end and surrounding tissue, and also allows for the return flow of the cooling medium. The working end liquid injection structure allows a cooling medium to reach the working end of the main needle body to cool the working end and surrounding tissue, and also allows the cooling medium to be injected into the lesion tissue, absorbing microwave energy to form steam, achieving steam thermal ablation. This invention achieves dual ablation through steam thermal ablation and microwave ablation, improving the ablation effect, reducing the temperature of the working end of the microwave ablation electrode, and increasing the moisture content of the tissue surrounding the working end, thus reducing carbonization of the lesion tissue.

The utility model relates to a cryoablation catheter with a supporting device, which comprises a sheath tube, an air inlet tube, an air return tube, a guide wire cavity tube, a bag body, the supporting device and a handle, the far end of the sheath tube is fixedly connected with the near end of the bag body, the near end of the sheath tube is fixedly connected with the handle, the far end of the bag body is fixedly connected with the far end of the guide wire cavity tube, and the bag body is fixedly connected with the handle. The supporting device is composed of an inner supporting piece and an outer supporting piece, the inner supporting piece is arranged in the bag body, the outer supporting piece is arranged outside the bag body, the supporting device is of a self-expanding structure, when the supporting device is converted from a compressed state to an expanded state, the inner supporting piece supports the inner wall of the bag body, and the outer supporting piece supports the outer wall of the bag body. The capsule body is tightly attached to a target area, the outer supporting piece is supported on the inner wall of a blood vessel, and a blood flow channel is established between the outer side of the capsule body and the inner wall of the blood vessel.

This application provides a laser hyperthermia device and a laser hyperthermia method. The laser hyperthermia device includes an ablation component and a laser probe. The ablation component emits laser light to ablate target tissue. The proximal end of the laser probe is connected to the optical path of the ablation component to conduct the laser light to the target tissue area. The laser probe includes a stator assembly and a rotor assembly arranged axially toward the distal end. The stator assembly is used to adjust at least one of the laser beam diameter, beam focal length, and light intensity. The rotor assembly is configured to rotate in a radial plane with the axial direction as the central axis to adjust the laser emission direction. The embodiments of this application enable more concentrated laser energy, thereby improving the accuracy of laser ablation, reducing energy requirements, and thus reducing ablation costs. During the rotation of the rotor assembly, the laser light is emitted toward the area of ​​the target tissue that needs ablation. Multiple ablations of the same target tissue can reduce the risk of infection of the ablation site and improve ablation efficiency.

The application discloses a portable bipolar cold cycle ablation device and an ablation needle, which comprises a handheld main body, an energy application unit, a cold cycle unit, an energy supply unit and a circulating refrigeration unit. The energy application unit is fixedly arranged on the outside of the handheld main body, and the cold cycle unit is arranged in the inside of the energy application unit. The energy application unit can be moved to the target tissue together with the handheld main body. The energy application unit comprises at least one first energy application element and at least one second energy application element. The cold cycle unit comprises a fluid circulation channel extending from the proximal end of the energy application unit to the distal end and returning from the distal end to the proximal end. The fluid circulation channel is provided with an insulation part on the channel wall of at least the part extending into the first energy application element and / or the second energy application element. The circulating refrigeration unit is in circulation communication with the first liquid inlet and the first liquid outlet at the proximal end of the fluid circulation channel, and is used for driving the fluid circulation flow and refrigerating the fluid circulation flow.

The needle assembly comprises an electrode needle and an external member, the electrode needle is arranged in the external member, the front end of the electrode needle extends out of the front end of the external member, the front end of the external member is provided with a notch, the notch wraps a first part of the electrode needle, and the first part of the electrode needle is provided with a second part of the electrode needle. The first part of the electrode needle is connected with the front end of the electrode needle, and the front end of the sleeve piece, the first part of the electrode needle and the front end of the electrode needle can be bent towards one side of the notch together when the front end of the sleeve piece is subjected to external force. The front end of the needle assembly can bend towards the preset direction while inserting the needle in the operation process, the needle aiming precision is high, and the operation efficiency is improved.

The present application relates to a kind of guide wire delivery systems, including guide wire and radio frequency transmitter, guide wire includes guide wire body and basket structure, guide wire body proximal end is connected with radio frequency transmitter, guide wire body distal end is connected with the proximal end of basket structure, guide wire body and basket structure are made of conductive material, basket structure can be unfolded and fixed in pathological region after passing through target position, after basket structure is fixed in pathological region, radio frequency transmitter is started, and basket structure is ablated to pathological region.The basket structure of the present application can anchor guide wire directly in pathological position, reduce surgical operation, and then save operation time.Guide wire is connected with radio frequency transmitter, and radio frequency wave is emitted through basket structure, and then ablation is carried out to pathological region, without the radio frequency knife dedicated to ablation is introduced into human body, reduce the frequency of replacing surgical instruments, reduce operation cost.