12 results about "Bipolar ablation" patented technology

This invention discloses a controllable dripping bipolar ablation hemostatic forceps, relating to the field of hemostatic forceps technology. It includes a clamping component, a connecting base with a connecting member on one side, a first forceps handle fixed to one side of the connecting base, a second forceps handle fixed to one side of the connecting base, and a cooperating component. Through the coordinated design of the clamping component and the cooperating component, it effectively solves the shortcomings of existing controllable dripping bipolar ablation hemostatic forceps, such as poor operability, low surgical efficiency, and insufficient surgical field clarity. It abandons the cumbersome control method of externally driven dripping components, automatically and precisely adjusting the dripping volume according to the clamping force of the operator. This avoids insufficient dripping leading to tissue carbonization when the clamping force is high and the ablation intensity is high, or excessive dripping leading to fluid accumulation in the surgical field when the clamping force is low and the ablation intensity is low, ensuring the ablation and hemostasis effect. It eliminates the need for frequent manual adjustment of dripping parameters by medical staff, reducing the operational burden.

A catheter utilizes a distal electrode array configured for quantification of endocardial or epicardial propagation velocity, with electrodes defining approximately equilateral triangles, such that the calculated velocity can be approximated regardless of the wave front direction. The distal electrode array can also include resilient splines carrying the electrodes such that the splines can deform to ensure contact between the electrodes and the heart tissue. Additionally, the electrodes of the distal electrode array can be individually addressable. Bipolar ablation lines or boxes can also be implemented using two parallel catheters at the endocardium and at the epicardium. Certain configurations include one or more distal electrode arrays of sufficient size to span an entire ventricular tachycardia (VT) circuit. The catheter may also be configured to detect block lines by pacing from edge pacing electrodes of the distal electrode array, and / or to detect fiber orientation by pacing from several edge pacing electrodes.

The invention is entitled "Bipolar Organized Ablation According to Predetermined Periodic Sets of Time Slots". A method for applying bipolar ablation pulses, the method comprising positioning a plurality of electrodes of a catheter in contact with tissue of an organ. The tissue is ablated using the plurality of electrodes according to a predetermined pattern comprising periodic sets of time slots. Each of the time slots defines (i) a pair of electrodes (EP), (ii) a waveform of one or more bipolar ablation pulses (BAP) applied to the tissue by the EP, and (iii) a duration of the time slot. The time slots are applied sequentially, and the pattern further comprises at least one empty time slot.

The present invention discloses a bipolar ablation needle with multi-interlocking adjustment, comprising an electrode body and an adjustment handle, the electrode body comprising a first electrode, an inner insulating tube, a second electrode, and an outer insulating tube coaxially sleeved in sequence from the inside to the outside, the adjustment handle comprising a handle body, an electrode exposure length adjustment push button, an electrode spacing adjustment push button and an outer insulating tube fixing piece, the proximal end of the first electrode is fixedly connected to the handle body, the proximal end of the inner insulating tube is fixedly connected to the electrode exposure length adjustment push button, the proximal end of the second electrode is fixedly connected to the electrode spacing adjustment push button, and the proximal end of the outer insulating tube is fixedly connected to the outer insulating tube fixing piece; a locking piece is also arranged inside the handle body, one end of the locking piece can be switchably connected to the electrode exposure length adjustment push button or the electrode spacing adjustment push button for transmission, and the other end of the locking piece is connected to the axial limit of the outer insulating tube fixing piece; and a front end rotary cover is also included which is connected to the locking piece for transmission, and the front end rotary cover is driven to rotate so that the locking piece can realize the switching of the interlocking relationship.

The invention discloses a water-cooled needle-shaped radiofrequency ablation electrode which comprises a positive electrode needle body, a needle core, an insulating layer, a negative electrode layer, a negative electrode plate, a handle and a switching button module. The positive electrode needle body is a hollow long needle and is used for puncturing and transmitting radio frequency energy, and a discharge ablation section is arranged at the front end of the positive electrode needle body. The insulating layer and the negative electrode layer are sequentially solidified and attached to the outer side of the needle body to form a bipolar ablation circuit. A switching button module is arranged on the handle and can be switched between the negative electrode layer and the negative electrode plate, so that a bipolar or monopolar ablation circuit is formed. According to the system, two modes can be quickly switched on the same needle body, the supply pressure of cold saline water is adjusted through linkage of the mode detection module, it is ensured that the optimal cooling effect can be obtained in different modes, and the flexibility, accuracy and safety of an operation are improved.

This disclosure provides a flexible catheter for both electrophysiological mapping and ablation using a high-density array of electrodes. [Solution] This catheter can be used to detect the electrophysiological properties of the tissue 13 in contact with the electrode, and to perform unipolar and bipolar ablation of the tissue.

The present invention provides a bipolar ablation device for passing through a human body cavity. The device mainly includes a needle core, on which a first ablation electrode is provided; a needle tube, on which a second ablation electrode is provided; the needle core is inserted into the needle tube, the needle core and the needle tube can move synchronously, and the needle core and the needle tube can move relative to each other, and the first ablation electrode can extend out or be received in the needle tube; when the first ablation electrode extends out of the needle tube, an adjustable preset distance is provided between the first ablation electrode and the second ablation electrode, a puncture tip is provided at the distal end of the needle tube, a smooth guiding structure is provided at the distal end of the needle core, or a smooth guiding structure is provided at the distal end of the needle tube, and a puncture tip is provided at the distal end of the needle core. By adopting the above structure, the ablation area is adjusted by adjusting the preset distance to achieve coverage of the lesion. At the same time, a smooth guiding structure and a puncture tip are respectively provided on the needle core and the needle tube, which can avoid damage to human blood vessels caused by the puncture tip during the delivery process while having the ability of puncture ablation.

The invention aims at providing a bipolar ablation needle which comprises a shell, and a sliding groove and a sliding block matched with the sliding groove are arranged in the shell; the needle tail part of the first ablation needle is fixed in the shell; the needle tail part of the second ablation needle is fixedly connected with the sliding block, and the first ablation needle and the second ablation needle are arranged in parallel; and the sliding adjusting assembly is connected with the sliding block, and when the sliding adjusting assembly is driven, the sliding adjusting assembly drives the sliding block to slide in the sliding groove. Therefore, the two ablation needles can be kept parallel, the needle tip gap distance can be adjusted according to the operation requirement, the operation difficulty is lowered, and the operation risk is reduced.

Described herein are examples of a left atrial appendage (“LAA”) occlusion or elimination implant device further configured to ablate tissue located at an atrium of the heart or nearby veins and ostia. The implant device can be delivered to a patient's heart using a catheter system and includes a contact member comprising one or more electrodes. In use, the electrodes of the contact member can perform unipolar or bipolar ablation at an ablation site that is distinct from an ostium or interior of the LAA. The implant device can then be re-positioned at least partially within the LAA, and the contact member can be implanted to occlude or eliminate the LAA. The implant device can further include a securing element comprising one or more electrodes, the securing element configured to cooperate with the contact member in performing unipolar or bipolar ablation and / or occluding or eliminating the LAA.

1. Name of the product in this design: Bipolar ablation needle. 2. Application of this design: This design is intended for clinical ablation therapy. 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.

Aspects of the present disclosure are directed to flexible catheters for both electrophysiology mapping and ablation using a high-density array of electrodes. These catheters may be used to detect electrophysiological characteristics of tissue in contact with the electrodes, and conduct monopolar and bipolar ablations of the tissue.

Aspects of the present disclosure are directed to flexible catheters for both electrophysiology mapping and ablation using a high-density array of electrodes. These catheters may be used to detect electrophysiological characteristics of tissue in contact with the electrodes, and conduct monopolar and bipolar ablations of the tissue.