Radio-frequency (RF) ablation array pinTechnical field
The present invention relates to a kind of medical apparatus and instruments, especially a kind of radio-frequency (RF) ablation array pin.
Background technology
Resection operation remains one of main radical treatment means of liver tumor at present, but in art or postoperative hemorrhage be operation on liver the most common, be also one of the most unmanageable complication.Data show, and about have the patient of 20% ~ 60% to lose blood because operation and have to accept blood transfusion, a large amount of lose blood and transfuse blood and be affect the key factor that hepatocarcinoma recurs more afterwards.How Bleeding control is the emphasis of operation on liver technology always.The conventional hemorrhage control mode of liver has the technology such as low pressure anesthesia, part or total hepatic vascular exclusion, but these methods may increase liver function injury or liver failure; If hemorrhage with large vascular forceps process, waste time and energy, and still likely occur the situation of massive hemorrhage.What radio-frequency ablation technique had because of it well melts haemostatic effect and is widely applied in the treatment of above-mentioned disease, also there is polytype radio-frequency ablation electrode in market, but these radio-frequency ablation electrodes can not be tackled focus scope flexibly, are not easy to concrete use in a particular application, and need repeatedly melt, operating time is elongated, add the misery of patient, increase the danger of complication, reduce therapeutic effect.
Summary of the invention
In order to solve above-mentioned existing issue, the invention provides a kind of can convenient according to focus scope adjust flexibly ablation needle usage quantity, be convenient to apply, largely reduce the radio-frequency (RF) ablation array pin melting number of times.
Realize above-mentioned purpose, a kind of radio-frequency (RF) ablation array of the technical solution used in the present invention pin, comprise radio frequency source, ablation needle, needle handle, described ablation needle is fixedly connected with needle handle, described needle handle leads to connecting line, described connecting line is fixedly connected with ablation needle, and described connecting line is fixedly connected with union joint away from one end of needle handle, and described union joint is electrically connected with radio frequency source.
As preferably, described ablation needle has several, and the syringe needle of each described ablation needle is cusped edge shape, and the other end away from described syringe needle is fixedly connected with needle handle, one end of each ablation needle is all connected with a connecting line, and described connecting line is fixedly connected with ablation needle through needle handle inside.
As preferably, the tip of described syringe needle is prismatic, and ablation needle has insulated sleeve away from one end cover of described syringe needle, and described syringe needle is exposed outside described insulated sleeve.40-50mm place from needle point place, ablation needle front end is exposed, and rear end is coated with PTFE insulation tube, and when avoiding performing the operation, operator is injured.
As preferably, described connecting line comprises the first connecting line and the second connecting line, and described ablation needle alternately connects described first connecting line and the second connecting line successively.First connecting line and the second connecting line are that the positive lead of conductive electric current follows negative lead respectively, and connecting line is flexible wire, the coated high insulant in outside.
As preferably, described union joint comprises the first union joint and the second union joint, all first connecting lines be connected on ablation needle were communicated with the first fixture and were connected with described first union joint, and all second connecting lines be connected on ablation needle were communicated with the second fixture and are connected with described second union joint.First union joint and the second union joint are connected respectively on corresponding radioactive source plug, and namely on both positive and negative polarity, thus the syringe needle realizing ablation needle is to the partition of affected area tissue and hemostasis.
As preferably, described needle handle comprises the first housing and the second housing, and described first housing is fixedly connected with the second housing, and described first housing offers groove and button hole, and described second housing is provided with raised line and buckle.First housing and the second housing can by ultrasonic fixing together with, there is the container of perforate at group formation two ends, and described connecting line and ablation needle are connected at internal tank respectively by correspondingly perforate, fix.
As preferably, described buckle can be fastened in described button hole.Buckle on needle handle and button hole can match, and several needle handles are combined, thus make radio frequency ablation needle be combined into array-like to use.
As preferably, described groove is positioned at the middle part of the first housing, and described button hole is evenly distributed on groove both sides, and described groove can be interlocked with described raised line.Groove on a needle handle can match with the raised line on another needle handle, thus these two needle handles are close to fixing together.When two needle handles fasten together completely, the first housing and the second housing are 4-7mm along the total length on vertical ablation needle axis direction.
The present invention has following beneficial effect: by the particular design to needle handle, multiple ablation needle can be needed side by side together according to use, or distribution is come, form suitable needle point distance, thus when positive and negative connection wire is connected on radio frequency source, the high frequency electric loop of ablation needle just required for formation of interval specific distribution, thus utilize the Kelvin effect of high frequency electric to carry out partition hemostasis to tissue; By the flexible use to radio-frequency (RF) ablation array pin involved in the present invention, high degree minimizing can melt number of times, shorten operating time, more retain tissue, alleviate sufferer misery, improve healing probability.
Accompanying drawing explanation
Fig. 1 is a kind of dispersed arrangement structural representation of invention; Fig. 2 is a kind of combinative structure schematic diagram of the present invention; Fig. 3 is a kind of perspective view of the present invention; Fig. 4 is the partial enlarged drawing of syringe needle of the present invention.
1, ablation needle; 11, syringe needle; 2, needle handle; 21, the first housing; 22, the second housing; 3, groove; 4, button hole; 5, raised line; 6, buckle; 7, connecting line; 71, the first connecting line; 72, the second connecting line; 73, the first fixture; 74, the second fixture; 8, union joint; 81, the first union joint; 82, the second union joint.
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing (Fig. 1 to 4), essence of the present invention is further elaborated.
A kind of radio-frequency (RF) ablation array pin involved in the present invention that the present invention relates to, comprise radio frequency source (mark), ablation needle 1, needle handle 2, described ablation needle 1 is fixedly connected with needle handle 2, described needle handle 2 comprises the first housing 21 and the second housing 22, described first housing 21 is fixedly connected with by ultrasound wave with the second housing 22, described first housing 21 offers groove 3 and button hole 4, described second housing 22 is provided with raised line 5 and buckle 6.Connecting line 7 is led in needle handle 2, described connecting line 7 is flexible wire, described connecting line 7 is fixedly connected with ablation needle 1, described connecting line 7 comprises the first connecting line 71 and the second connecting line 72, described ablation needle 1 alternately connects successively described first connecting line 71 and the second connecting line 72, wherein the first connecting line 71 is positive pole connection wire, and the second connecting line 72 is that negative pole connects wire.
Described ablation needle 1 has several, in the present embodiment, the number of ablation needle 1 is 6, the syringe needle 11 of each described ablation needle 1 is sharp prismatic, the other end away from the ablation needle 1 of described syringe needle 11 is fixedly connected with needle handle 2, each ablation needle 1 is all connected with a connecting line 7, described connecting line 7 is fixedly connected with ablation needle 1 through needle handle 2 inside, totally 3 positive poles connect wire, 3 negative poles connect wire, ablation needle 1 is coated with PTFE insulation tube 12 away from one end cover of described syringe needle 11, and 45mm place from needle point place, ablation needle front end is exposed.
Described connecting line 7 is fixedly connected with union joint 8 away from one end of needle handle 2, described union joint 8 is electrically connected with radio frequency source, described union joint 8 comprises the first union joint 81 and the second union joint 82, all first connecting lines 71 be connected on ablation needle 1 are electrically connected with described first union joint 81 by the first fixture 73, described first fixture 73 is enclosed within above-mentioned 3 positive poles and connects outside wire, all second connecting lines 72 be connected on ablation needle 1 were communicated with the second fixture 74 and were electrically connected with described second union joint 82, described second fixture 74 is enclosed within above-mentioned 3 negative poles and connects outside wire, on the anode plug that first union joint 81 and the second union joint 82 are connected respectively to radioactive source and cathode plug.
During use, by 6 diameters 1.5 millimeters, length 100 millimeters, the radio-frequency (RF) ablation array pin combination string of the gold-plated composition of copper-nickel alloy of 55 millimeters, bare front end 45 millimeters of pin rear ends cover PTFE insulated sleeve, the distance of needle point and needle point is 6 millimeters, and the surface of pin indicates centimeter scale; In the combination of 6 pins, 3 is "+" pole, and 3 is "-" pole, can be " just " and " bear " alternate intervals arrangement successively during arrangement.When abdominal uses, the usage quantity of array pin can be adjusted according to the scope of focus, and different capacity is set as required reaches and solidify to carbonization, reduce the number of times that melts thus reach the time shortening operation.Radio-frequency (RF) ablation array pin inserts the area of isolation of lesions position according to practical situation, forms a pre-cut band after utilizing instrument generation radio frequency source to make the tissue coagulation hemostasis of area of isolation.Radio-frequency (RF) ablation array pin can make tumor and marginal portion tissue dewatering coagulation necrosis, closed local vascular, can obviously reduce intraoperative hemorrhage and plantation, reduces Tumor cell dissemination during operation extruding in art, the incidence rate of obvious reduction post-operative complication, makes the process of tumor resection safer, quick.
Above-mentioned specific embodiment is only used to explain bright the present invention; but not be limit the invention; in the protection domain of aim of the present invention and claim, to any replacement and change of not paying creative work that the present invention makes, all protection scope of the present invention will be fallen into.