CN101156804A - Temperature control microwave melt needle - Google Patents

Abstract

The invention discloses a temperature control microwave ablating needle used for a microwave thermal ablating remedy of oncosis and pathologic change organization, the operation of which is convenient and safe. The invention comprises an ablating needle head, an ablating needle tube and a handle, wherein, a rhenium insulator is arranged between the ablating needle head and one end of the ablating needle tube, the other end is connected with the head of the handle, an end seal is arranged at the other end, a fixed mount and a jack used to be externally connected are arranged at the tail part of the handle, a coaxial cable connecting joint and a connecting terminal are arranged on the fixed mount, a microwave coaxial cable and a stainless steel capillary tube are arranged in the ablating needle tube, the microwave coaxial cable passes through the end seal, and the microwave coaxial cable is also connected with the coaxial cable connecting joint, a temperature sensor is arranged on the end seal, the connecting terminal used to be connected with the temperature sensor is arranged on the fixed mount, and the water outlet is communicated with the ablating needle tube. The usage is convenient, safe and reliable, the operating process is simplified, and the possibility of the operating time and the infection during the operation process is reduced.

Description

Temperature control microwave melt needle

Technical field

The present invention relates to a kind of one-time treatment apparatus, relate in particular to a kind of temperature control microwave melt needle that is used for the microwave thermal ablation of tumor and pathological tissues.

Background technology

Along with the development of medical image technology, under image-guided, microwave ablation treatment tumor has been a kind of new Therapeutic Method of oncotherapy, and it is image-guided down at B ultrasonic or CT, and the micro-wave therapeutic pin is inserted body tumor tissue, and tumor is carried out thermal ablation therapy.In above-mentioned therapeutic process, because the heat that the microwave coaxial cable energy loss produces on micro-wave therapeutic pin shank is scalded the tissue around the needle track, the method that adopts is to add capillary tube with peristaltic pump hydraulic pressure to be gone into capillary tube in needle tubing at present, reduces the temperature of shank by water cycle.But the adapter of the band cold circulation microwave ablation needle water inlet pipe and water outlet pipe that uses all is contained in the both sides of ablation needle handle at present.The microwave input adapter of microwave melt needle is contained in the rear end of treatment handle, the doctor needs water inlet pipe and water outlet pipe is connected with external water pipe one by one with adapter before each treatment like this, also to connect the treatment line in the rear end of treatment handle, ablation needle directly links to each other with microwave cable and joint exposes, in case it is bad that joint connects, make joint microwave energy loss increase.The heat that produces is scalded operation doctor's hands easily.Though have the water flowing of cooling capillary tube to cool in the needle tubing, the bar temperature can not be surveyed, in case capillary blockade, the bar temperature rise can not intuitively in time be found, still might scald the needle track surrounding tissue.

Summary of the invention

The invention provides a kind of temperature control microwave melt needle easy to use, safe in the tumour ablation treating process.

The present invention adopts following technical scheme:

A kind of temperature control microwave melt needle that is used for the microwave thermal ablation of tumor and pathological tissues, by melting syringe needle, melting needle tubing and handle forms, be provided with the tetrafluoro insulator melting syringe needle and melt between the end of needle tubing, the other end that melts needle tubing is connected with the head of handle, be provided with the end envelope in this other end end of melting needle tubing and hold envelope to be positioned at handle, afterbody at handle is provided with fixed mount and is used for the outside socket that is connected, on the fixed mount of handle afterbody, be provided with coaxial cable connector and be used to connect the splicing ear of temperature sensor, above-mentioned melt to be provided with in the needle tubing be used to connect the microwave coaxial cable that melts syringe needle and water inlet stainless steel capillary, the microwave coaxial cable that melts in the needle tubing passes the end envelope, and be connected with coaxial cable connector on the handle afterbody fixed mount, seal up at end and to be provided with temperature sensor, on the fixed mount of handle afterbody, be provided with the splicing ear that is used to connect temperature sensor, on handle afterbody fixed mount, be provided with water inlet and outlet, water inlet is communicated with stainless steel capillary with water inlet, outlet with melt needle tubing and be communicated with.

Compared with prior art, the present invention has following advantage:

1. the present invention is designed to pin the plug mode and is connected with the treatment line, and the connection of cooling Inlet and outlet water, temperature transducer are connected, and microwave output connection is integrated to be contained in the handle of ablation needle.As long as a treatment wire terminal is inserted in the ablation needle handle, the water route connects before treatment, and thermometric connects, and microwave output connects moment and finishes.

2. detect at therapeutic process king-rod temperature real-time tracking, in case bar temperature show value exceeds 45 ℃, instrument is reported to the police, and prompting reduces the bar temperature by regulating discharge.Guarantee that therapeutic process is organized and do not scalded.

3. in order to avoid the needle track implantation tumor tissues when treatment finishes to dial pin, by regulating discharge, the barre temperature control is transferred to ablation needle about 60 ℃.

4. being contained in the handle the channel integral of thermometric, microwave connector, recirculated cooling water, plug by pin handle and treatment line is connected moment and once finishes, simplified operation sequence, guaranteed that microwave output connects, it is not tight to have solved operator's cable that spins, and increases loss, cause the treatment underpower, influence surgical effect, the problem of in operation process, being scalded, the reliability that thermometric connects, Inlet and outlet water connects by the cable connector place.Make the treatment operating process convenient and safe, reduced possibility of infection in operating time and the operation process.

5. thermometric mode in the bar has solved the interferential difficult problem of microwave thermometric, can monitor the bar temperature in real time, guarantees that patient is not scalded in operation process.

Description of drawings

Fig. 1 is structural front view of the present invention (analysing and observe).

Fig. 2 is a structure vertical view of the present invention.

Fig. 3 is structure of the present invention (amplification) right view.

The specific embodiment

A kind of temperature control microwave melt needle that is used for the microwave thermal ablation of tumor and pathological tissues, by meltingsyringe needle 1,melt needle tubing 3 and handle 10 compositions, be provided withtetrafluoro insulator 2 meltingsyringe needle 1 and melt between the end ofneedle tubing 3, the other end that meltsneedle tubing 3 is connected with the head ofhandle 10, be provided withend envelope 4 in this other end end of meltingneedle tubing 3 and holdenvelope 4 to be positioned athandle 10, afterbody athandle 10 is provided with fixed mount and is used for the outside socket that is connected, on the fixed mount ofhandle 10 afterbodys, be provided with coaxial cable connector 9 and be used to connect the splicing ear 7 of temperature sensor, 8, above-mentioned melt to be provided with in theneedle tubing 3 be used to connect the microwave coaxial cable that meltssyringe needle 1 and water inlet stainless steel capillary, the microwave coaxial cable that melts in theneedle tubing 3passes end envelope 4, and be connected with coaxial cable connector 9 on thehandle 10 afterbody fixed mounts, onend envelope 4, be provided with temperature sensor, on the fixed mount ofhandle 10 afterbodys, be provided with the splicing ear 7 that is used to connect temperature sensor, 8, onhandle 10 afterbody fixed mounts, be provided with water inlet 6 and outlet 5, water inlet 6 is communicated with stainless steel capillary with water inlet, outlet 5 be communicated with, with reference to Fig. 3, on the outer surface that meltsneedle tubing 3, be provided withgraduation mark 12, be arranged with thepositioning sleeve 13 that is used to locate the ablation needle insertion depth on theneedle tubing 3 melting.

With reference to Fig. 1, Fig. 2, theend envelope 4 that meltsneedle tubing 3 ends adopts metal column, the fixed mount ofhandle 10 afterbodys adopts tail-hood 11, this tail-hood 11 is threaded withhandle 10, above-mentioned water inlet 6, outlet 5, splicing ear 7,8 and coaxial cable connector 9 all be located on the tail-hood 11, water inlet 6 and outlet 5 respectively by water inlet pipe and outlet pipe with stainless steel capillary withmelt needle tubing 3 and be communicated with, cooling water enters stainless steel capillary by water inlet 6 through water inlet pipe, return outlet 5 by meltingneedle tubing 3 through outlet pipe again, water inlet pipe and outlet pipe all pass the metal column as ablation needlepipe end envelope 4, the said temperature pick off is located on the metal column and between water inlet pipe and outlet pipe, critesistor is adopted in temperature sensor.

Microwave energy passes to through coaxial cable connector 9 and meltssyringe needle 1 emission, and cooling water flows into the stainless steel capillary that meltsshank 3 through water inlet pipe 6, is flowed out by outlet pipe 5 again.The different requirements that the shank temperature satisfies treatment are melted in assurance.Pick off is fixed on the centre ofmetal column 4 water inlet pipes 6 and outlet pipe 5, and the shank temperature Accuracy Error that instrument demonstrates in therapeutic process like this is in 1 ℃.

Claims (4)

1. temperature control microwave melt needle that is used for the microwave thermal ablation of tumor and pathological tissues, by melting syringe needle (1), melting needle tubing (3) and handle (10) forms, be provided with tetrafluoro insulator (2) melting syringe needle (1) and melt between the end of needle tubing (3), the other end that melts needle tubing (3) is connected with the head of handle (10), be provided with end envelope (4) in this other end end of melting needle tubing (3) and hold envelope (4) to be positioned at handle (10), afterbody at handle (10) is provided with fixed mount and is used for the outside socket that is connected, on the fixed mount of handle (10) afterbody, be provided with coaxial cable connector (9) and be used to connect the splicing ear (7 of temperature sensor, 8), above-mentioned melt to be provided with in the needle tubing (3) be used for connecting microwave coaxial cable and the water inlet stainless steel capillary melt syringe needle (1), the microwave coaxial cable that melts in the needle tubing (3) passes end envelope (4), and be connected with coaxial cable connector (9) on handle (10) the afterbody fixed mount, it is characterized in that on end envelope (4), being provided with temperature sensor, on the fixed mount of handle (10) afterbody, be provided with the splicing ear (7 that is used to connect temperature sensor, 8), on handle (10) afterbody fixed mount, be provided with water inlet (6) and outlet (5), water inlet (6) is communicated with stainless steel capillary with water inlet, outlet (5) with melt needle tubing (3) and be communicated with.

2. temperature control microwave melt needle according to claim 1 is characterized in that being provided with graduation mark (12) on the outer surface that melts needle tubing (3).

3. temperature control microwave melt needle according to claim 1 and 2 is characterized in that being arranged with the positioning sleeve (13) that is used to locate the ablation needle insertion depth on the needle tubing (3) melting.

4. temperature control microwave melt needle according to claim 1 and 2 is characterized in that temperature sensor is between water inlet pipe and outlet pipe.

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