Temperature control oncotherapy probe
This utility model relates to a kind of main treatment tumor treatment instrument, belongs to medical equipment.
At present, whole world cancer mortality has accounted for second of dead sum, though various countries utilize modern science and technology to capture cancer, but the most direct for preinvasive cancer from present treatment means, method is recommended excision by general acclaim the most completely, but because tumor is excessive, reasons such as the position is improper only have the sub-fraction cancer can implement excision, and recurrence after operation rate height.Therefore the local treatment of development operation becomes the clinical pressing issues that face.Features such as and now countries in the world are developed in succession and utilized microwave to make therapeutic equipments, utilize the thermal efficiency of microwave good, and heat radiation is uniform and stable cover tumor, and make its coagulation necrosis, kill cancer cell.But there is following defective in existing micro-wave therapeutic instrument: 1. heating-up temperature is difficult to control, when microwave heating burns out cancerous cell good on every side tissue is burnt out; 2. the cancerous issue carbonization of solidifying makes surrounding tissue can not effectively absorb microwave energy; 3. the microwave heating bar stretches into to organize and is prone to the surrounding tissue adhesion in the heating process or forms the phenomenon of sinus tract, the wound that causes suffering and be difficult to heal to patient.
The purpose of this utility model is a kind of temperature control oncotherapy probe of design, and it is rational in infrastructure, is easy to the controlled microwave heating-up temperature, the adhesion surrounding tissue.
The designed temperature control oncotherapy probe of this utility model mainly is made of handle, joint, radiation under, have power input seat and thermometric seat on the handle, be connected by joint between handle and the radiation under, coaxial cable is installed in the radiation under, be wound with active antenna in its end, the end of active antenna and coaxial cable is connected, coaxial cable in the radiation under is with the critesistor shielded-plate tube, critesistor wherein is installed, critesistor is connected with the thermometric seat, coaxial cable is connected with power input seat, and the body of rod of radiation under has the politef cover.
The critesistor of the temperature control oncotherapy probe that this utility model is designed is 5~50mm apart from the distance of radiation under end.
The length range of the active antenna during the designed temperature control oncotherapy of this utility model is popped one's head in is at 5~200mm.
Active antenna during the designed temperature control oncotherapy of this utility model is popped one's head in is a spiral type, and its spacing is at 0.1~10mm.
The material of the active antenna during the designed temperature control oncotherapy of this utility model is popped one's head in is the metal or alloy silk, and the diameter of silk is between 0.05~1mm.
The coaxial cable appearance of the temperature control oncotherapy probe that this utility model is designed is the teflon insulation cover.
The active antenna of the designed temperature control oncotherapy of this utility model probe by resistivity (ρ) between 0.2~2.
The standing-wave ratio of the active antenna during the designed temperature control oncotherapy of this utility model is popped one's head in is in 1.4~3 scopes.
The designed temperature control oncotherapy of this utility model is popped one's head in when using, and by microwave cable radiation under rear portion thermometric seat is connected with the temperature control instrument, and power input seat is connected with the power loader.Cancerous tumours inside is inserted in the end of the radiation under of irradiator, by the microwave antenna launched microwave energy heat temperature raising in the radiation under, big as far as possible in cancerous tumours by adding the thermosetting solidification zone, make the cancerous issue necrosis.But, make solidification zone not produce carbonization because its temperature by the temperature control instrument monitoring, therefore can be controlled Heating Zone Temperature effectively.Heat and took out radiation under in about 5 minutes,, do not have adhesion with surrounding tissue because the body of rod of radiation under has the politef cover, when therefore taking out radiation under, the adhesion surrounding tissue, wound is easy to healing.
The advantage of the temperature control oncotherapy probe that this utility model is designed is:
1. compact conformation, reasonable in design, Controllable Temperature is built in below 69 ℃, from Fig. 4 C figure can find out temperature be elevated to 65 ℃ near the time, therefore the maximum gauge that solidifies does not change with heat time heating time and power, solidifies cancerous tissue in the maximum magnitude under the situation that can not produce carbonization, and can implement multiple spot solidifies, every maximum solidification temperature is in full accord, and every spheric solidification zone size of class is the same, promptly can kill cancerous issue effectively to greatest extent.
2. do not produce adhesion, the active antenna input power can reach in 30W~40W scope and form the heats that the spherical maximum gauge of class solidifies, can find out that by B figure among Fig. 4 input power is big again, its heating-up temperature can not rise yet again, therefore the heat that radiation under distributed is little, and because radiation under skin is the housing of cohesive material not, can carbonization to the body of rod of radiation under organizing not on every side, adhesion, misery when reducing patient makes treatment back patient's wound be easy to healing.
3. effective percentage height.
The designed temperature control oncotherapy probe of this utility model mainly is applicable to and organa parenchymatosum's cancerous tumours also can be used for others.
Fig. 1 is the structure chart of the designed temperature control oncotherapy probe of this utility model.
Fig. 2 is the A portion enlarged drawing of temperature control oncotherapy probe among Fig. 1.
Fig. 3 is time and power and the curvilinear motion figure that solidifies diameter.
Fig. 4 is the designed temperature control oncotherapy of this utility model probe solidification zone sketch map when using.
The structure and the embodiment of in conjunction with specific embodiments the designed temperature control oncotherapy of this utility model being popped one's head in reference to the accompanying drawings is described further below.
Embodiment 1
Temperature control oncotherapy probe as shown in Figure 1, 2 mainly is made of handle 1, joint 2 and radiation under 3, is fixed together by joint 2 between handle 1 and the radiation under 3.Have thermometric seat 4 and power input seat 5 at the rear portion of handle 1.The bar cover that the body of rod surface of radiation under 3 has the politef non-adhesive material to make, coaxial cable 6 wherein is installed, the periphery of coaxial electrical cable core is with teflon insulation cover 7, the end that teflon insulation overlaps 7 appearances is wound with active antenna 8, and active antenna 8 is that helical form twines, and is that the nickel alloy wire of 0.3mm is made by diameter, its length is 20mm, pitch is 0.2mm, and the standing-wave ratio of active antenna is 1.8, and resistivity is 0.4.Active antenna 8 ends are connected with the end of coaxial cable 6, and coaxial cable 6 is connected with power input seat 5.Be with critesistor shielded-plate tube 9 in coaxial cable 6 peripheries, critesistor 10 wherein is installed, critesistor 10 is connected with thermometric seat 4, and the resistance of critesistor 10 is 2K Ω.Critesistor 10 is 10mm apart from the distance of the end of radiation under 3.Critesistor shielded-plate tube 9 plays shielding action, the interference of critesistor 10 when preventing microwave.This temperature control oncotherapy probe input power is best at 30~40W.
This temperature control oncotherapy probe is when using, with handle 1 with thermometric seat 4 be connected with extraneous temperature control instrument by cable, power input seat 5 is connected with microwave oncotherapy controller by microwave cable 11, input power is controlled at 30~40W, radiation under 3 is punctured in the middle of the cancerous tumours, implement microwave heating, shown in D figure among Fig. 4, forming diameter is the spheric solidification zone of 32mm class, temperature control is at 65 ℃, abducent temperature is followed successively by 65 ℃, 60 ℃, 45 ℃, 39 ℃ from the centre in formation, and be 5 minutes heat time heating time, can reach tumoricidal purpose.If cancerous tumours is bigger, then can implement multiple spot puncture heating, shown in the E figure among Fig. 4, for diameter is that the tumor of 95mm adopts three to bring CIJIA thermosetting solidification zone out into the open, input power 35W, temperature control are at 65 ℃, and each point of puncture heating-up temperature is 5 minutes, can form big solidification zone, kill cancer cell.Because this probe is temperature control preferably, can make the temperature of each point of puncture consistent relatively, the formed solidification zone size of each point of puncture is the same.In implementing the puncture operation process, the critesistor 10 in the radiation under 3 is feedback signal at any time, make the temperature in the heating solidification zone is monitored at any time, so thermal treatment zone temperature inside strictness is controlled, the carbonization phenomenon can not occur.When input power higher, can guarantee also that its heating-up temperature is the highest only reaches about 65 ℃, reaches after this temperature not can be again to change with the prolongation of heat time heating time, as shown in Figure 3, therefore guarantee the absolute safe, reliable of operation, and reached the optimum efficiency of operation.Heat with low-power, the body of rod temperature of its radiation under 3 can be not awfully hot, not organizing around the body of rod can be burnt carbonization, and the body of rod has the politef cover, do not produce adhesion with surrounding tissue, therefore when taking out radiation under 3, can adhesion not hemorrhage yet, and wound is little, and healing is fast, not box out trace after the operation is for patient reduces postoperative hidden danger.
Embodiment 2
As shown in Figure 1, 2 temperature control oncotherapy probe, wherein active antenna 8 is to be that the stainless steel silk of 0.2mm is made by diameter, and its length is 30mm, and pitch is 0.5mm, and the standing-wave ratio of active antenna 8 is 2, resistivity is 0.3.The resistance of critesistor 10 wherein is 1.0K Ω.Critesistor 10 is 10mm apart from the distance of the end of radiation under 3.The applicating adn implementing example 1 of this probe is identical, but the spheric solidification zone of the class of its formation is less.
Embodiment 3
As shown in Figure 1, 2 temperature control oncotherapy probe, wherein active antenna 8 is to be that the filamentary silver of 0.3mm is made by diameter, and its length is 10mm, and pitch is 0.3mm, and the standing-wave ratio of active antenna 8 is 2.5, resistivity is 0.6.The resistance of critesistor 10 wherein is 3.0K Ω.Critesistor 10 is 15mm apart from the distance of the end of radiation under 3.The applicating adn implementing example 1 of this probe is identical, but the spheric solidification zone of the class of its formation is also less.
Above-mentioned temperature control oncotherapy probe is simple to operate, is easy to control, is the treatment of cancer instrument of a new generation.