173 results about "Microwave ablation" patented technology

The invention provides a microwave ablation control system and method used based on nuclear magnetic resonance, and belongs to the technical field of ablation control, and the system comprises an MRI rapid temperature measurement module, a temperature prediction module, a microwave ablation power control module, a tissue impedance monitoring module and a data fusion processing module. The microwave ablation instrument, the MRI rapid temperature measurement module and the tissue impedance monitoring module are all connected with the data fusion processing module, the microwave ablation instrument is further connected with a microwave ablation needle inserted in ablation area tissue, and the temperature prediction module and the microwave ablation power control module operate on the data fusion processing module; in combination with the method, the defects that in an existing microwave ablation control method used based on nuclear magnetic resonance, due to the fact that the MRI temperature measurement sequence collection and reconstruction speed is limited, the closed loop control period is too long, the nonlinear change of the heating rate caused by tissue impedance mutation cannot be coped with, and then the overtemperature or undertemperature problem occurs are overcome.

The invention relates to the technical field of minimally invasive ablation, in particular to a liver tumor microwave ablation postoperative contraction deformation prediction method, which comprises the following steps: performing unified standardization processing on different periods of liver MRI images; accurately marking a preoperative liver tumor area, a postoperative ablation area and a postoperative liver tumor ghost area of the liver MRI image to obtain masks of the corresponding areas; designing a distance perception function as an attention parameter of different areas of the liver MRI image; constructing a multi-sequence distance guide complementary network model; selecting a loss function; selecting an elastic registration method to perform pre-operation and post-operation registration; and calculating an ablation safety boundary through the ablation area mask and the adjusted tumor mask. The liver tumor microwave ablation postoperative curative effect evaluation accuracy can be effectively improved, and a foundation is laid for formulating a subsequent treatment plan of a patient.

The invention belongs to the technical field of medical instruments, and particularly relates to a prostate microwave ablation device which comprises a handle, an outer catheter is fixed to one end of the handle, an ablation cavity and a flushing cavity are formed in the outer catheter, and a needle outlet is formed in the end, away from the handle, of the outer catheter. The ablation cavity and the needle outlet are communicated with each other, the flushing cavity and the needle outlet are communicated with each other, a coil driving unit is assembled at the end, close to the outer catheter, of the interior of the handle, a needle advancing and retreating button is assembled at the upper end of the handle, and the coil driving unit and the needle advancing and retreating button are electrically connected through a wire. The prostate focus tissue is rapidly heated to about 150 DEG C through microwave energy, thermal coagulation and necrosis of the focus tissue are achieved, the method has the advantages of being rapid in effect taking and low in recurrence rate, meanwhile, water molecules are gasified through high temperature, the ablation process is conveniently monitored in real time through ultrasonic images, and compared with the prior art, the diameter is obviously reduced, and implementation of a soft needle is facilitated.

The invention discloses an AI optimization intelligent diagnosis and treatment system and method with an intelligent puncture mechanical arm combined with a microwave ablation instrument, and relates to the technical field of AI treatment. According to the moving track of the puncture mechanical arm and the appearance characteristics of the puncture needle, simulating the three-dimensional space position of a puncture path in the body of a patient, analyzing the contact condition of the puncture path and the visceral organs, constructing a danger degree evaluation model of the contact condition of the puncture path and the visceral organs, and obtaining an evaluation result of the danger degree of the contact condition of the puncture path and the visceral organs; according to the method, the actual three-dimensional path is obtained according to the operation deviation condition of the mechanical arm, then the danger value is judged according to the contact condition of the mechanical arm and the visceral organs, and therefore the optimal path is screened out, and the treatment safety is improved.

A method for displaying real-time ablation growth projections is provided. The method includes applying, by a processor, an ablation model to image data of a patient. The ablation model is based on a position of an ablation probe, and the ablation probe is coupled to the processor. The method also includes displaying, on a display coupled to the processor, a projected ablation zone on the image data. The projected ablation zone is based on ablation parameters and the position of the ablation probe. The projected ablation zone includes a margin showing a confidence level. The method further includes ablating by the ablation probe. The ablating is based on an evaluation of the projected ablation zone with respect to a target. A system for performing a microwave ablation procedure is provided. A non-transitory computer-readable storage medium storing instructions is provided.

The utility model relates to a microwave ablation device handle and a microwave ablation catheter, comprising a microwave joint assembly configured to couple a microwave host, the microwave joint assembly comprising a pin and a joint body, the pin and the joint body being insulated; the water circulation assembly is configured to be used for cooling a guide pipe connected with the water circulation assembly; the coaxial cable is connected with the microwave connector assembly, penetrates through the water circulation assembly and extends to the far end of the catheter; the inner conductor of the coaxial cable is matched with the pin, and the outer conductor is matched with the joint body; the connecting base is arranged between the microwave connector assembly and the water circulation assembly, a sealing annular groove is formed between the connecting base and the microwave connector assembly, and a sealing ring is arranged in the sealing annular groove and used for preventing cooling water in the water circulation assembly from entering the microwave connector assembly to cause short circuit of the inner conductor and the outer conductor. A sealing ring is installed between the electrical part and the water circulation part of the handle, assembly is completed in an interference fit mode, and water is effectively prevented from entering the electrical part to cause short circuit.

The invention provides a numerical simulation method for large tumor treatment of single-needle multi-point microwave ablation, and belongs to the technical field of large liver tumor data simulation. The method comprises the following steps: establishing a finite element simulation model, and solving the finite element simulation model according to the interaction among an electromagnetic field, heat conduction and biological tissues to obtain a simulation result; constructing a single-needle multi-point microwave ablation numerical model; carrying out ablation simulation by utilizing the single-needle multi-point microwave ablation numerical model, outputting multi-point ablation result data, quantifying the size and form of a solidification area, and carrying out space overlapping analysis on a contour surface to obtain the characteristics of the solidification area; ablation simulation is carried out by setting parameter combinations of pull-back distances and ablation time of a plurality of antennas, and an optimal parameter combination is obtained by combining feature analysis of a solidification area, so that numerical simulation of large tumor treatment is completed; according to the invention, the problems of low ablation temperature, long simulation time and difficulty in accurate positioning of the antenna in the existing single-needle multi-point microwave ablation simulation method are solved.

The invention relates to a microwave ablation needle, which comprises an outer tube, an inner tube, an outer tube, an inner tube and an outer tube, the inner pipe is coaxially arranged in the accommodating cavity of the outer pipe; the coaxial cable is arranged in the inner tube, the far end of the coaxial cable is connected with a radiation electrode, and at least part of the radiation electrode is exposed out of the inner tube; a gap between the inner pipe and the coaxial cable forms a water inlet cavity, a gap between the inner pipe and the outer pipe forms a water outlet cavity, and the water inlet cavity is communicated with the water outlet cavity; wherein the inner tube and the outer tube are formed with a radiation region and a reflection region on the outer periphery of the radiation electrode in the circumferential direction. The radiation area can allow microwave energy emitted by the radiation electrode to penetrate through, the reflection area prevents the microwave energy from penetrating through, directional radiation of the microwave ablation needle on target tissue through the radiation area is achieved, heat energy is generated, the target tissue is inactivated, and unnecessary damage to other normal tissue is avoided.

A microwave ablation probe includes a handle configured to operably couple a supply cable to a probe needle, and a gasket positioned in the handle to seal a joint between the handle and the supply cable. The gasket is configured to allow a predetermined amount of rotation of the supply cable relative to the handle and to prevent rotation of the supply cable relative to the handle of more than the predetermined amount.

The invention belongs to the field of medicines, and particularly relates to a nanosheet capable of activating an STING pathway and improving microwave ablation as well as a preparation method and application of the nanosheet. The nanosheet is prepared from MXenes through organic acid treatment, organic alkali dispersion, STING agonist compounding and phospholipid modification, and has good microwave thermal conversion efficiency and an STING pathway activation function. The combined microwave ablation can enhance the immunogenic death of tumor cells, promote the maturation of dendritic cells, doubly activate immune response and effectively inhibit the growth and metastasis of prostatic cancer, provides a new strategy for the treatment of prostatic cancer, and can be used for preparing drugs for treating prostatic cancer.

1.The name of the design product: needle head (bullet head) of microwave ablation needle. 2.The use of the design product: used with microwave ablation equipment, belonging to the field of medical devices. 3.The design points of the design product: in shape. 4.The picture or photo that best indicates the design points: perspective view. 5.Other circumstances that need to be explained: the design product requested to protect does not contain color; the design product is a partial design, the part requested to protect is the yellow part in the view, and other parts are not claimed.

A microwave ablation probe (100), comprising: an applicator (106) having a radiating section (106a) arranged to emit electromagnetic energy to cause heating in tissue; a feed cable (108) having a distal end and a proximal end and being arranged to supply electromagnetic energy to the applicator (106), the applicator (106) being coupled to the distal end of the feed cable (108); a flexible tubular member (110) comprising a shaft portion (111) and a tip portion (112), the tip portion (112) located at a distal end of the tubular member (110) and being adapted for insertion into tissue, wherein the applicator (106) and at least part of the feed cable (108) are located within the tubular member (110); and a restriction means (114) arranged to restrict the separation between the applicator (106) and the tip portion (112) of the tubular member (110). The restriction means (114) comprises a flexible tethering member (116) extending between the applicator (106) and the tip portion (112), the tethering member (116) being arranged to restrict at least proximal movement of the applicator (106) relative to the tip portion (112) of the tubular member (110). Also disclosed is a method (1000) of manufacturing the ablation probe (100).

The invention discloses a bone-like osteoma microwave ablation thermal injury assessment method based on all-optical parameters, which comprises the following steps: respectively considering thermal injury models of cortical bone and cancellous bone under different microwave ablation conditions by constructing a simulation model conforming to bone tissue characteristics; according to the method, construction of an incomplete P5 approximation model is proposed, bone tissue all-optical parameter anti-construction research based on steady-state radiance is carried out, the accuracy is high, calculation is convenient, temperature parameters and biological tissue all-optical parameters are analyzed in a combined mode, a tissue thermal damage model of the temperature and tissue all-optical parameters is established through theoretical research, and due to the characteristics of different bone tissues, the tissue thermal damage model can be used as a tissue thermal damage model of the temperature and tissue all-optical parameters. The tissue types are considered in the thermal damage model, and effective bone tissue thermal damage factors are designed based on different tissues, so that the evaluation accuracy is ensured.

A method of planning a microwave ablation procedure includes uploading a pretreatment scan to a control system of an energy delivery system, displaying the pretreatment scan on a display of the control system, and analyzing the pretreatment scan and identifying a target tissue region that includes a disorder. The method further includes creating and graphically displaying a digital target area on the pretreatment scan, planning and graphically depicting on the pretreatment scan a target path for one or more planned ablation probes, and creating a planned ablation zone for each planned ablation probe based on user-selected parameters. The method further includes placing one or more actual ablation probes in the subject patient, obtaining a probe scan of the subject patient that detects the actual ablation probes, and assigning the planned ablation zone for the planned ablation probes to the actual probes.

A microwave ablation probe includes an outer shell defining an inner cavity axially extending to a probe tip, a cable extending in the inner cavity and comprising an antenna, and a choke coupled to the cable in the inner cavity. The choke comprising an inner layer mechanically locked to an outer casing.

A surgical system is disclosed including a probe and a balloon operatively coupled to the probe. The probe includes a shaft, an antenna extending from the shaft, and a conductor extending through the antenna and operable to deliver energy to tissue of a patient. The balloon is transitionable between an inflated state and a deflated state. In the inflated state, the balloon maintains a position of the antenna relative to the tissue and enhances energy delivery from the conductor to the tissue.

A microwave ablation probe tip includes a post portion configured to be received in an ablation probe needle, the post portion comprising one or more annular grooves, and an insertion portion comprising a shoulder at which the insertion portion is connected to the post portion, wherein the insertion portion tapers in a direction away from the shoulder.

A method for treatment of volume of interest (VOI), for example tumor, comprising a device for application of therapy in multi sites in a pre-defined volumetric array through a single needle insertion into the body. Therapies applied by this method include injection of therapeutic agents, including cytotoxic, immunologic and biologic drugs or drug combinations; radioactive substances; thermal ablation including radiofrequency ablation, microwave ablation, or cryoablation. The method addresses the problem of inadequate distribution of therapy throughout the VOI through a single needle insertion.

The invention relates to a microwave ablation assembly for treating anal fistula, which comprises an outer tube, a cable, a guide head, a PTFE piece and a near-end connecting piece, a first channel, a second channel, a third channel and a fourth channel are formed in the outer tube, and the cable passes through the first channel; a liquid inlet and a liquid outlet are formed in the side wall of the outer pipe, and both the liquid inlet and the liquid outlet are communicated with the second channel; the near end of the outer tube is connected to the near-end connecting piece, a first cavity and a second cavity which are separated from each other are formed in the near-end connecting piece, the near end of the fourth channel penetrates through the near end of the outer tube, so that the fourth channel is communicated with the second cavity, and the far end of the third channel and the far end of the fourth channel are both communicated with a connecting cavity of the outer tube; a liquid return opening is formed in the outer pipe and located in the first cavity. The PTFE piece is inserted into the far end of the outer pipe, and an insertion channel is formed in the PTFE piece; the guide head is inserted into the insertion channel from the far end side, and the far end of the cable is connected with the guide head. Tissues around the fistula are denatured through microwaves, coagulative necrosis is formed, and the purpose of safely treating anal fistula is achieved.

1. The name of the design product: microwave ablation instrument (component). 2. The use of the design product: used for coagulation and ablation treatment of pathological tissues in the body. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: component 1 perspective view 1. 5. Other circumstances that need to be explained: component 1 is a microwave ablation instrument; component 2 and component 3 are ablation needle handles.

According to the method and device for predicting recurrence after HCC local treatment, multi-time-point peripheral blood lymphocyte subgroups are utilized, an integrated lymphocyte subgroup index is established through related factor screening and model optimization, and clinical information is assisted to establish an immune-clinical combined model to evaluate microwave ablation prognosis of liver cancer patients, so that liver cancer MWA postoperative recurrence and death risks are predicted in the early stage; the dynamic change of the lymphatic subgroup of the patient is longitudinally evaluated for multiple times through the verification queue to serve as input information to optimize the model, and guidance is provided for MWA preoperative planning and prognosis dynamic monitoring. The method comprises the following steps: (1) screening and constructing an accurate prediction model based on a circulating lymphatic subgroup; (2) explaining immune level change characteristics of the patient after ablation through the model, and performing prognosis risk assessment; and (3) verifying the efficacy of the post-treatment lymphatic subgroup dynamic monitoring and prediction model and re-optimizing the model.

The invention relates to a microwave ablation and irreversible electroporation composite ablation system. The system mainly comprises an integrated host platform integrated with a microwave energy generation module, a high-voltage pulse generation module and a main control module. The microwave energy generation module is used for generating high-frequency microwave energy and is connected with the microwave ablation needle; the high-voltage pulse generation module is used for generating high-frequency electric pulses and is connected with the irreversible electroporation needle; the main control module is used for coordinating the output time sequence of the microwave energy generation module and the high-voltage pulse generation module through a preset cooperative control algorithm. According to the invention, system integration is realized, and two different energies can be managed in a unified manner through a set of highly integrated host platform and intelligent control software, so that equipment switching is not needed, the process is simple, the efficiency is improved, data intercommunication can be realized, intelligent control is realized, and space occupation is reduced.

The invention relates to a microwave ablation probe with an integrated temperature sensor. A microwave ablation probe includes a housing extending axially and defining a lumen, a tip positioned at a distal end of the housing, and a plurality of thermocouples integrated in the housing.

The application discloses a microwave ablation needle fixing support, characterized by comprising: hinged left and right bridge arms, a universal ball suitable for being clamped and fixed between the two bridge arms, and a locking mechanism for locking the clamped state of the two bridge arms, wherein the universal ball is provided with a vertical slot, and an elastic rubber gasket for clamping and fixing a microwave ablation needle is arranged in the vertical slot. After the microwave ablation probe completes puncture, the ablation probe has a certain relative position and included angle with the skin plane of a patient. The application can firmly fix the ablation probe on the skin of the patient without increasing the puncture difficulty, increasing the length of the ablation probe, or changing the puncture state of the ablation probe after the puncture is completed, so as to prepare for subsequent ablation operation. After the ablation operation is completed, the gear locking device is opened, and the fixing support can be conveniently removed.

The application discloses a kind of microwave coagulation equipment idle protection method and system, it is related to microwave coagulation equipment technical field, the method includes: through temperature sensor being arranged on the microwave coagulation equipment microwave ablation needle, temperature rise is generated by real-time absorption microwave energy that is leaked to air due to idle, and corresponding temperature is collected;According to the temperature collected at each time point, the temperature change rate on temperature sensor is continuously calculated according to set time interval;Whether the microwave coagulation equipment is idle state is judged by the temperature change rate.The application improves the timeliness of idle state determination, to improve the timeliness of microwave coagulation equipment idle state protection.

A cable assembly (1) for medical radio frequency or microwave ablation. The cable assembly includes a coaxial cable (2) with an inner conductor (3), encompassed by a dielectric layer (4), encompassed by an outer conductor (5). The cable assembly (1) further includes a first cooling line (6) and a thermal conductive layer (7), which in a cross-sectional view encompasses the coaxial cable (2) and the first cooling line (6) in a circumferential manner. The thermal conductive layer (7) is configured to reduce a thermal peak caused by the coaxial cable (2) when transferring energy, by distributing thermal energy around the coaxial cable (2) and the first cooling line (6) in a circumferential manner.

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 embodiment of the invention discloses a transmitting power control method, device and equipment of a microwave ablation needle and a medium, and belongs to the technical field of microwave ablation. The method comprises the steps that the actual transmitting power and the actual reflecting power of the microwave ablation needle are obtained; based on the actual transmitting power and the actual reflecting power, impedance matching is conducted on the microwave ablation needle in combination with the first corresponding relation, and the actual impedance corresponding to the microwave ablation needle is determined; obtaining ideal effective power of the microwave ablation needle; determining target transmitting power corresponding to the ideal effective power based on the actual impedance in combination with a second corresponding relation; and controlling the actual transmitting power of the microwave ablation needle to be adjusted to the target transmitting power. Impedance real-time detection in the microwave ablation process is achieved, manual-independent automatic control over the transmitting power of the microwave ablation needle is achieved, the treatment effect of the microwave ablation needle is improved, application and development of the microwave ablation needle in the medical field are promoted, and manpower resources are effectively saved.

A microwave ablation probe (100; 200); 300); 400, 400; 500) for a vehicle. The microwave ablation probe includes a dipole antenna (106; 206, 206; 306; 406); 506) and a feed cable, the dipole antenna being arranged to emit microwave radiation to heat surrounding tissue; a feed cable arranged to supply electromagnetic energy to the dipole antenna, the feed cable comprising a coaxial cable having an inner conductor (108; 208, 208; 308, 308; 408); 508), an outer conductor (110; 210, 210; 310); 410, 410; 510) between the inner conductor and the outer conductor and a dielectric (112; 212, 212; 312; 312; 412; 412; 512) for a motor vehicle. The dipole antenna (106; 206, 206; 306; 406); 506) comprises a first antenna section (106a; 206a; 206a; 306a; 306a; 406a; 406a; 506a) and a second antenna section (106b; 206b; 206b; 306b, 306b; 406b; 406b; 506b), the first antenna section forming a first pole of the dipole antenna and the second antenna section forming a second pole of the dipole antenna. The first antenna section (106a; 206a; 206a; 306a; 306a; 406a; 406a; 506a) comprises one or more antenna elements (116a-i; 216a-i, 216a-i; 316a-i, 316a-i; 416a-h, 416a-h; 516a-h), the one or more antenna elements each being connected to the outer conductor (110; 210, 210; 310); 410, 410; 510) is integrally formed and includes an outwardly extending portion (117a) extending away from the longitudinal axis of the feed cable and extending between the insulator (118; 318, 318; 418, 418; 518) to form an overlapping portion (117b) extending proximally along the length of the feed cable. The first antenna section (106a; 206a; 206a; 306a; 306a; 406a; 406a; 506a) further comprises an antenna insulator (118; 318, 318; 418, 418; 518) between an overlapping portion of each of the one or more antenna elements and an overlapping portion of the outer conductor and the antenna insulator.

An ablation probe employs a triaxial construction with axial slots in an outer pair of tubular conductors separated by different dielectric materials to provide microwave power concentrated along a plane.