Radio frequency needle assembliesTechnical field
The utility model relates to training equipment fields, especially radio frequency needle assemblies.
Background technique
Radio-frequency ablation procedure can be used for that human organ is good, malignant entity tumor.When radio-frequency current flows through tissue, because of electricityThe quick variation in magnetic field is so that intracellular positive and negative ion quickly moves, then between them and they and intracellular itsThe friction of its molecule, ion etc. makes diseased region heat up, and the evaporation of intraor extracellular moisture, dry, pyknosis is caused to fall off so that sterileProperty necrosis, to achieve the purpose that treatment.Radio frequency needle insertion human body group is generallyd use when radio-frequency ablation procedure carries out treatment illnessKnit, then treated, during treatment how uniformly and guarantee ablation range, improve ablation effect be improve treatment effectProblem to be solved when fruit.
Utility model content
The utility model one of to solve above-mentioned technical problem used by technical solution be: radio frequency needle assemblies, including oneHollow needle body is connected in the tail end of hollow needle body and is equipped with a grasping member, and an electrode needle is equipped in the cavity of hollow needle body, describedThe rear end of electrode needle is connected with external power supply, the tapered setting in front end of the hollow needle body, is equipped with one at the center of grasping memberThrough the central passage of grasping member, it is equipped with a thread cavity on the grasping member of central passage tail portion, screws and is equipped in thread cavityOne feeding threaded rod, in the connected feeding knob of the tail end of feeding threaded rod, the rear end of the electrode needle passes through central passage simultaneouslyIt is fixedly connected with the feeding threaded rod, is equipped at intervals with several fluids along its curved surface on the side wall of hollow needle body front end and leads toRoad, be symmetrically connected a feed liquor tubule on the rear end lateral wall of hollow needle body, is respectively equipped with one at the port of each feed liquor tubuleSealing cover.
The fluid channel is cone and aperture from the front to the back is gradually reduced.
An Anti-slip cover is equipped on the lateral wall of grasping member.
Feeding graduation mark is equipped on feeding threaded rod.
Beneficial effect possessed by the utility model is, reasonable in design, can be quick during RF therapyThe length stretched out of adjusting electrode needle as needed and recorded, while in treatment by certain to the injection of hollow needle bodyPhysiological saline improves ablation range under the electrode needle appropriate in high-frequency vibration acts on, and improves therapeutic effect, peculiar shape is arrangedThe fluid channel of shape can be improved the rate of outflow of the fluid in exit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic cross-sectional view of the utility model.
Fig. 3 is the first partial enlarged structure schematic diagram of Fig. 2.
Fig. 4 is the second partial enlargement structural representation of Fig. 2.
Fig. 5 is the side structure schematic view of the utility model.
In figure, 1, hollow needle body；2, grasping member；3, electrode needle；4, central passage；5, thread cavity；6, screw thread is fedBar；7, knob is fed；8, fluid channel；9, feed liquor tubule；10, sealing cover；11, Anti-slip cover；12, graduation mark is fed.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this realityIt is described in detail with novel.
As shown in figures 1-5, radio frequency needle assemblies, including a hollow needle body 1 are connected in the tail end of hollow needle body 1 and are equipped with oneGrasping member 2 is equipped with an electrode needle 3, the electrode by grasping member 2 convenient for grasping in operation in the cavity of hollow needle body 1The rear end of needle 3 is connected with external power supply, first connects electrode needle 3 with power supply when carrying out whole ablation tumour to patientIt is logical, then cooperate electrode slice contact on patient skin, electrode needle 3 is extended into intracorporal tumour affected part, the sky by puncturingThe tapered setting in the front end of heart needle body 1 is equipped with a central passage 4 for running through grasping member 2 at the center of grasping member 2, logical at centerThe grasping member 2 of 4 tail portion of road is equipped with a thread cavity 5, is screwed in thread cavity 5 equipped with a feeding threaded rod 6, in feeding threaded rodThe connected feeding knob 7 of 6 tail end, the rear end of the electrode needle 3 pass through central passage 4 and consolidate with 6 phase of feeding threaded rodEven, several fluid channels 8 are equipped at intervals with along its curved surface on the side wall of hollow 1 front end of needle body, in the rear end of hollow needle body 1Symmetrically be connected a feed liquor tubule 9 on lateral wall, and a sealing cover 10 is respectively equipped at the port of each feed liquor tubule 9；Lead to when useFeeding knob 7 is overregulated to adjust feeding threaded rod 6 and move forwards or backwards, thus to adjust electrode needle 3 in hollow needle body 1The length that front end is stretched out, when needing to cooperate saline injection to be treated, is led to for adapting to the needs in different affected partsThe saline injection for opening the inside injection liquid of each sealing cover 10 to realize certain pressure is crossed, physiological saline is through fluid channel8 outflow cooperation electrode needles 3 realize the purpose for improving therapeutic effect.
The fluid channel 8 is cone and aperture from the front to the back is gradually reduced；As the reduction in aperture can be improvedSpeed when physiological saline flows out, to cooperate high-frequency electrode needle 3 that tumor by local tissue is made to generate high temperature, to make local cellsGenerate thermocoagulation necrosis and denaturation.
It is equipped with an Anti-slip cover 11 on the lateral wall of grasping member 2, plays the role of anti-skidding.
It is equipped with feeding graduation mark 12 on feeding threaded rod 6, can accurately purchase the length of the feeding of electrode needle 3.
Before use, first connecting electrode needle 3 and power supply when carrying out whole ablation tumour to patient, then cooperateElectrode slice contacts on patient skin, and electrode needle 3 is extended to intracorporal tumour affected part by puncturing, more effectively meet peopleDemand, feeding threaded rod 6 is adjusted when use by adjusting feeding knob 7 and is moved forwards or backwards, thus to adjust electrodeThe length that needle 3 is stretched out in the front end of hollow needle body 1 injects physiology salt when needing to cooperate for adapting to the needs in different affected partsWater is come when being treated, and by opening each sealing cover 10, inwardly injection liquid realizes the saline injection of certain pressure,Physiological saline flows out the purpose that cooperation electrode needle 3 realizes raising therapeutic effect through fluid channel 8.
Above-mentioned specific embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the artFor art personnel, any alternate modification or transformation made to the utility model embodiment all fall within the guarantor of the utility modelIt protects in range.
Place is not described in detail for the utility model, is the well-known technique of those skilled in the art of the present technique.