CN2647258Y - Osmotic operation sensing thermal needle - Google Patents

Abstract

The utility model discloses a key part which is arranged on the radio frequency tumour thermotherapy instrument, a penetration operation sensing thermal needle, which is abbreviated as the heat acupuncture needle. The main technological character is that the heat acupuncture needle is temperature online detection and controllable heating, which makes the heat penetrate the focus with wet and heat penetration and the treatment scope is enlarged, the hidden angle of needlepoint carbonization and multi-needle treatment are avoided. The unique structure character is that the heat acupuncture needle is constituted by an electric needle rod and a handle. The electric needle rod comprise a head 1, a focusing naked electric tube 2 and a pipe rod 3 three parts. The head is a hard insulator comprising a thermocoupler which is about 1 cm long; The focusing naked electric tube is a pipe body with a plurality of micropores, the pipe is provided with a thermocoupler; The pipe rod is coated with the insulation layer which is connected to the control circuit of the radio frequency power source through the cable. The micropore in the focusing naked electric tube is connected to a transfusion pipe through the inner cavity. Two independent thermocouplers are both connected to the display control circuit. The utility model solves the problem that the treatment area does not real-time display temperature for long time.

Description

The hot pin of infiltration type operation sensing

This utility model relates to medical apparatus and instruments, is the hot pin of a kind of infiltration type operation sensing.

Tumor is the pathological proliferation of soma and tissue.Tumor has optimum and pernicious branch, and carcinoid organizational structure is similar with normal structure, and growth is slow, and there is peplos the outside, limitation ground propagation does not penetrate peplos, does not invade surrounding tissue, thereby clear with the boundary of surrounding tissue, do not form ulcer, generally do not recur behind the excision; The organizational structure of malignant tumor is different with normal cell, growth is very fast, the no peplos in tumor outside, and surrounding tissue is invaded and destroyed to oncocyte, thereby it is unclear with the surrounding tissue boundary, usually form rotten to the corn, ulcer, and transfer to the organ of partial lymph node and distal part, early operation excision through lymph or blood flow, though there is the part patient to cure, but recurrence is often arranged, and operation is complicated, mostly also needs to make complementary therapy with chemotherapy or radiotherapy.Along with tumor research deeply and development, find that when body temperature reaches more than 42 ℃ cancerous cell just may large quantities of death, and the normal cell heatproof is higher.Therefore, the thermotherapy technology of malignant tumor also just becomes the important research object of current treatment of cancer, and has obtained good effect.Existing tumor thermotherapy therapy equipment consists predominantly of lesions position monitoring, positioner and hot pin three major part, heat is needled into the focus portion that human body is accurately positioned, but heats the temperature that this pin makes it to reach kill cancer cell.The method of heat hot pin has several different methods such as unidirectional current, microwave and radio frequency.Hot pin commonly used in the prior art is hot pin of a kind of multiple warhead boundling and cold cycling hot pin, promptly is provided with many elastic metallic yarns in a body, after this heat is needled into body foci portion, tinsel is opened and to heating.The main weak point of this hot pin is that power demand is less, and inevitable around hot pin the tissue gasification and on hot syringe needle, tie carbon, increase heating stylus and pull out difficulty when external, to strengthen wound face at least; On the other hand, the electric flux of this hot pin input when the treatment beginning is bigger, but owing to the reason of the tissue around the hot pin because of hyperpyrexia gasification knot carbon, the impedance of hot pin is increased, thereby stop the input of electric flux, the effect that this just reduces thermotherapy greatly produces the dead angle between the tinsel.Cold cycling hot pin, water is taken away because a large amount of heat energy is cooled, and needs bigger energy also to limit the expansion of treatment region.Taking a broad view of above-mentioned hot pin in the subject matter of interior existing hot radio frequency pin is: one, and focus can not be directly monitored in heating, can not show the temperature of treatment region, and causing influences therapeutic effect.Its two, most advanced and sophisticated electric field concentrates temperature rise too high, the often most advanced and sophisticated local dehydration carbonization in place.Its three, the treatment dead angle is arranged between the tinsel.Its four, take away for the heat major part of the cold cycling hot pin water that is cooled, influence the expansion of treatment region.

The purpose of this utility model provides the hot pin of the controlled operation sensing of a kind of infiltration type, makes it to have comparatively simple structure, overcomes the existing long-standing shortcoming of hot pin, to adapt to the substantial all size neoplastic lesion of different patients of treatment or human body different parts.

Realize this utility model of above-mentioned purpose, its major technique design is: make the hot needle set of radio frequency have temperature online to detect, heating-up temperature is controlled, and heat energy all is utilized and is penetrated into each position of focus.In concrete structure, a same body type acusector bar and the one handle that also consist predominantly of of this utility model with the hot pin of existing radio frequency, body type acusector bar has unique design, and the acusector bar is made up of head, the naked fulgurite of focusing and pipe bar three parts.Head is one to comprise the rigid insulation body of thermocouple junction, focus on naked fulgurite and be one and contain microporous body, in the pipe by putting another thermocouple.The pipe bar is covered with insulating barrier, is connected with the radio-frequency power supply control circuit by lead.Main feature of the present utility model is: the acusector bar is most advanced not to be naked electric body but insulator, has overcome the inhomogeneities of most advanced and sophisticated radio-frequency field, has overcome the inhomogeneities of heating simultaneously, and most advanced and sophisticated place has settled thermocouple, and the actual displayed treatment region is organized heating-up temperature.For focusing on naked fulgurite, radio-frequency field is along the axial uniform distribution of naked fulgurite below 1 centimeter for head, and naked fulgurite has micropore, constantly penetrates normal saline in the micropore, and takes away the heat of high hot-zone, infiltrates into focus, enlarges therapeutic domain.The length that focuses on naked fulgurite is directly relevant with therapeutic domain, is designed to several specifications.Bigger seance just can reach the 5-6 centimetre.So the utility model of structure is: realized for a long time the treatment region purpose of displays temperature in real time; Utilize the wet infiltration technology of heat, make full use of radio-frequency (RF) energy and effectively enlarged treatment region.Utilize second thermocouple and power capable of on-line.Single acusector bar just can reach the effect of multiple warhead or cold utmost point bundling electrode, and has overcome the dark space between multipole, has improved efficient, has enlarged therapeutic domain.

Description of drawings:

Fig. 1 is a schematic appearance of the present utility model.

Fig. 2 is the vertical cross-sectional schematic in part of the present utility model.

Embodiment of the present utility model as shown in drawings.At first see also Fig. 1, seen by Fig. 1, this utility model includes a body type acusector bar and an one handle 4.In the present embodiment, this body type acusector bar is made with rustless steel or titanium steel material, the head that the front end position is tip is a rigid insulation entity 1, is to be with many micropores to focus on naked fulgurite 2 at head 1 rear, is covered with an insulating barrier (consulting Fig. 2) on body type pipe bar 3 outer peripheral faces.This body type pipe bar 3 is connected with handle 4, and is connected with the radio-frequency power supply control circuit by strand 5.See one thermocouple 7 is arranged at the place, tip of the head 1 of body type acusector bar by Fig. 2.The inner chamber that focuses on naked fulgurite 2 is settled second thermocouple 10.The lead-in wire of two thermocouples is incorporated strand 5 into and is shown that control circuit is connected.The tail end tube for transfusion 6 of micropore by tract in the acusector bar and handle 4 that focuses in the naked fulgurite 2 is connected with transfusion device.

Claims (1)

1. A kind of hot pin of infiltration type operation sensing that is disposed in the radio frequency tumour thermal therapeutic apparatus includes a body type acusector bar and an one handle, and the head of body type acusector bar is a rigid insulation entity, and settles thermocouple; The head rear is the naked fulgurite of the focusing of a micropore, and length is pressed the different size design, and tube cavity is also settled thermocouple; Naked fulgurite rear is covered with the pipe bar of an insulating barrier, the pipe bar places and is fixed in the handle, and link to each other with radio frequency control circuit by lead, comprise in the circuit two independently thermocouple link to each other with showing control circuit, the micropore that focuses in the naked fulgurite passes through acusector bar inner chamber, and intracavity of handle links to each other with the transfusion device water pipe.

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