CN217488838U

CN217488838U - Infiltration cover of central electrode of ablation catheter

Info

Publication number: CN217488838U
Application number: CN202123192635.0U
Authority: CN
Inventors: 徐宏
Original assignee: Hangzhou Kunbo Biotechnology Co Ltd
Current assignee: Hangzhou Kunbo Biotechnology Co Ltd
Priority date: 2021-12-19
Filing date: 2021-12-19
Publication date: 2022-09-27
Anticipated expiration: 2031-12-19

Abstract

The utility model relates to the field of relative equipment of ablation catheters, in particular to an infiltration cover of a central electrode of an ablation catheter, which comprises an electrode, an infiltration cover, an ablation catheter and a handle, wherein the right side of the electrode is fixedly connected with the ablation catheter, the right end of the ablation catheter is fixedly connected with the handle, the right end of the electrode is provided with four groups of mounting holes, traction wires are fixedly connected in the mounting holes, the right end of the electrode is fixedly connected with a saline connecting pipe, the middle part of the electrode is provided with a saline hole, the left end of the saline hole is communicated with a plurality of component flow holes, the middle part of the outer wall of the electrode is provided with a settling zone, the infiltration cover is sleeved on the outer wall of the electrode, a plurality of groups of infiltration holes which are uniformly distributed are arranged on the side wall of the infiltration cover, the saline connecting pipe is communicated with the saline hole, a connecting hole is arranged in the handle, the right end of the saline connecting pipe is communicated with the connecting hole, and the lower end of the saline conveying mechanism is arranged on the handle, the utility model provides a prevent that electrode part from rising temperature too fast cover that soaks.

Description

Infiltration cover of central electrode of ablation catheter

Technical Field

The utility model relates to a melt relevant equipment field of pipe, concretely relates to melt cover that soaks of pipe center electrode.

Background

The principle of the radio frequency ablation is that alternating high-frequency current with the frequency less than 30MHz (generally 460-480 kHz) is applied to enable ions in tumor tissues to generate high-speed oscillation and mutual friction, radio frequency energy is converted into heat energy, and therefore coagulative necrosis of tumor cells occurs. In rf ablation therapy, the device used is an rf ablation catheter that is percutaneously punctured with an electrode at its distal end to deliver rf energy to the tissue surrounding the site of penetration. When the radiofrequency ablation therapy is carried out, the radiofrequency ablation catheter is an electrode for outputting radiofrequency energy, is connected with a radiofrequency generator, and is punctured into a target tumor through a puncture point under the guidance of B ultrasonic or CT. The neutral electrode plate is also connected with a radio frequency generator, and is attached to the proper part of the patient body. When a foot switch on the radio frequency generator is stepped on, the radio frequency ablation catheter is communicated with the neutral electrode plate, and high-frequency current acts on human tissues between the radio frequency ablation catheter and the neutral electrode plate, so that tumor cells contacted with an electrode at the far end of the radio frequency ablation catheter are coagulated, denatured and necrosed.

When the existing radio frequency ablation catheter for the lung works, the temperature of the electrode part is increased too fast, and the tissues near the electrode can form scabs after being dried and carbonized, so that ablation is stopped and is not thorough. Moreover, the "scab" tissue adheres to the electrodes, which can damage surrounding organs when the device is pulled out.

In order to solve the problems, the utility model discloses an infiltration cover of an ablation catheter center electrode.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an infiltration cover of a central electrode of an ablation catheter. The problem is solved as much as possible, so that the immersion hood for preventing the electrode part from being heated too fast is provided.

The utility model discloses a following technical scheme realizes:

the utility model provides an infiltration cover of ablation catheter center electrode, includes electrode, infiltration cover, ablation catheter and handle, electrode right side fixedly connected with melts the catheter, ablation catheter right-hand member fixed connection handle, the electrode right-hand member is equipped with four group's mounting holes, fixedly connected with pull wire in the mounting hole, electrode right-hand member fixedly connected with salt solution connecting pipe, the electrode middle part is equipped with the salt solution hole, salt solution hole left end intercommunication has a plurality of group's discharge orifices, electrode outer wall middle part is equipped with the settlement zone, it establishes on the electrode outer wall to soak the cover, it soaks the hole to be equipped with a plurality of groups of evenly distributed on the cover lateral wall to soak, the salt solution connecting pipe is linked together with the salt solution hole, the inside connecting hole that is equipped with of handle, this connecting hole of salt solution connecting pipe right-hand member intercommunication, the connecting hole lower extreme is provided with salt solution conveying mechanism.

Preferably, salt solution conveying mechanism contains notes liquid pipe, needle tubing, piston, connecting rod and indicates the ejector pad, notes liquid pipe fixed connection at the handle lower extreme and be linked together with the connecting hole, annotate liquid pipe lower extreme fixed connection needle tubing, needle tubing inner chamber sliding connection piston, piston lower extreme fixed connection connecting rod, connecting rod lower extreme fixed connection indicates the ejector pad, and it provides salt solution for the tissue that can be fine through salt solution conveying mechanism, avoids melting the electrode and heaies up too fast.

Preferably, the liquid injection pipe, the needle tube, the connecting rod and the finger pushing block are all made of plastic materials, and the piston is made of rubber materials.

Preferably, the plurality of wetting holes are used for forming a uniform heat exchange medium protection film outside the electrode.

Preferably, the infiltration cover is fixed on the electrode, is rotatably arranged on the electrode around the axis of the electrode, or is axially and slidably arranged on the electrode along the axial direction of the electrode, so that the tissue can be well protected by the infiltration cover, and the tissue is prevented from being damaged.

Preferably, the infiltration cover is a cylindrical structure with a closed circumferential direction, is sleeved on the periphery of the electrode, and only wraps the proximal end part of the electrode.

Preferably, the infiltration cover is fixed on the electrode, a positioning step is arranged on the periphery of the electrode, and the far end of the infiltration cover is abutted against and limited by the positioning step, so that the infiltration cover can be stably installed.

Preferably, the diameters of the infiltration holes are the same, and the infiltration holes and the diversion holes are arranged in a staggered manner.

Preferably, the outer wall of the electrode is provided with a settling zone, the shunt hole is arranged in the settling zone, a gap is reserved between the inner wall of the infiltration cover and the surface of the settling zone, and the shunt hole is in a flaring shape.

Preferably, the ablation catheter is made of an insulating high-temperature-resistant material and is made of a material resistant to high temperature of 150 ℃, so that ablation failure caused by melting of the ablation catheter due to overhigh temperature is avoided.

The utility model has the advantages that: the arranged infiltration cover is matched with the saline connecting pipe and the saline conveying mechanism to be used, so that the phenomenon that the temperature of the electrode part rises too fast and tissues near the electrode form scabs after being dried and carbonized can be well prevented, and the ablation stops and is not thorough.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is an external structural view of the present invention;

FIG. 3 is an exploded view of the present invention;

in the figure: 1-electrode, 101-mounting hole, 102-saline hole, 103-shunt hole, 104-settling zone, 2-infiltration cover, 201-infiltration hole, 3-ablation catheter, 4-handle, 401-connecting hole, 5-saline connecting pipe, 6-traction wire, 7-liquid injection pipe, 8-needle pipe, 9-piston, 10-connecting rod and 11-finger push block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, an infiltration hood for a central electrode of an ablation catheter includes an electrode 1 and an infiltration hood 2, ablation catheter 3 and handle 4, electrode 1 right side fixedly connected with ablation catheter 3, ablation catheter 3 right-hand member fixed connection handle 4, electrode 1 right-hand member is equipped with four group mounting holes 101, fixedly connected with traction wire 6 in the mounting hole 101, electrode 1 right-hand member fixedly connected with salt solution connecting pipe 5, electrode 1 middle part is equipped with salt solution hole 102, salt solution hole 102 left end intercommunication has a plurality of group discharge orifices 103, electrode 1 outer wall middle part is equipped with settling zone 104, it establishes on electrode 1 outer wall to soak cover 2 cover, it is equipped with evenly distributed's a plurality of groups infiltration hole 201 on the 2 lateral walls of cover to soak, salt solution connecting pipe 5 is linked together with salt solution hole 102, the inside connecting hole 401 that is equipped with of handle 4, this connecting hole 401 of salt solution connecting pipe 5 right-hand member intercommunication, the connecting hole 401 lower extreme is provided with salt solution conveying mechanism. Specifically, the saline conveying mechanism comprises a liquid injection pipe 7, a needle tube 8, a piston 9, a connecting rod 10 and a finger push block 11, wherein the liquid injection pipe 7 is fixedly connected to the lower end of a handle 4 and communicated with a connecting hole 401, the lower end of the liquid injection pipe 7 is fixedly connected with the needle tube 8, the inner cavity of the needle tube 8 is slidably connected with the piston 9, the lower end of the piston 9 is fixedly connected with the connecting rod 10, the lower end of the connecting rod 10 is fixedly connected with the finger push block 11, saline can be well provided for tissues through the saline conveying mechanism, the ablation electrode is prevented from being heated too fast, the liquid injection pipe 7, the needle tube 8, the connecting rod 10 and the finger push block 11 are all made of plastic materials, the piston 9 is made of rubber materials, a plurality of infiltration holes 201 are used for forming a uniform heat exchange medium protective film outside the electrode 1, an infiltration cover 2 is fixed on the electrode 1, rotatably installed on the electrode 1 around the axis of the electrode 1 or axially slidably installed on the electrode 1 along the axis of the electrode 1, the infiltration cover 2 is of a circumferentially closed cylindrical structure, the outer periphery of the electrode 1 is sleeved with the infiltration cover 2, the tissue can be well protected through the infiltration cover 2, the infiltration cover 2 is prevented from only wrapping the near-end part of the electrode 1 due to damage to the tissue, the infiltration cover 2 is fixed on the electrode 1, the outer periphery of the electrode 1 is provided with the positioning step, the far end of the infiltration cover 2 is abutted to the positioning step for limiting, so that the infiltration cover 2 can be stably installed, the diameters of the infiltration holes 201 are the same, the infiltration holes 201 and the diversion holes 103 are arranged in a staggered mode, the outer wall of the electrode is provided with the settlement region 104, the diversion holes 103 are arranged in the settlement region 104, a gap is reserved between the inner wall of the infiltration cover 2 and the surface of the settlement region 104, the diversion holes 103 are in an expanded shape, the ablation catheter 3 is made of insulating high-temperature-resistant materials and made of high-temperature-resistant materials, and ablation failure caused by melting of the ablation catheter 3 due to overhigh temperature is avoided.

In the utility model, when the device is needed, a doctor holds the handle 4 to inject the ablation catheter 3 into the vein of a patient, so that the electrode 1 reaches the position to be operated, after reaching the designated position, the power supply of the electrode 1 is switched on, the electrode 1 emits high-frequency electromagnetic waves to treat the pathological change tissue of the patient, when the temperature of the electrode reaches the treatment temperature, the saline in the inner cavity of the needle tube 8 is extruded by pressing the finger push block 11 and matching the connecting rod 10 and the piston 9, the saline enters the saline hole 102 through the connecting hole 401 via the saline connecting pipe 5 and then flows out via the branch hole 103 and flows to the position near the electrode 1 via the infiltration hole 201, so that the temperature of the electrode 1 can not be quickly raised and can be kept stable, the temperature of the position of the electrode 1 is prevented from being raised too fast, the conductivity and the thermal conductivity of the tissue are improved by the physiological saline, the impedance balance is maintained, and the impedance is kept in a relatively stable state, meanwhile, the temperature of the tissue is reduced, the humidity of the tissue is increased, the tissue is fundamentally prevented from scabbing due to drying and temperature rise, the impedance is ensured to be stabilized in a certain range in the whole ablation process, the radio frequency energy can be continuously output, a large enough ablation range is formed, and a larger and more effective coagulation necrosis focus is generated.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An infiltration cover of an ablation catheter center electrode is characterized in that: including electrode, infiltration cover, ablation pipe and handle, electrode right side fixedly connected with melts the pipe, melt pipe right-hand member fixed connection handle, the electrode right-hand member is equipped with four group's mounting holes, fixedly connected with traction wire in the mounting hole, electrode right-hand member fixedly connected with salt solution connecting pipe, the electrode middle part is equipped with the salt solution hole, salt solution hole left end intercommunication has a plurality of group discharge orifices, electrode outer wall middle part is equipped with the settlement zone, it establishes on the electrode outer wall to soak the cover, it is equipped with evenly distributed's a plurality of group's infiltration holes on the cover lateral wall to soak, the salt solution connecting pipe is linked together with the salt solution hole, the inside connecting hole that is equipped with of handle, this connecting hole of salt solution connecting pipe right-hand member intercommunication, the connecting hole lower extreme is provided with salt solution conveying mechanism.

2. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the saline water conveying mechanism comprises an injection pipe, a needle tube, a piston, a connecting rod and a finger push block, wherein the injection pipe is fixedly connected to the lower end of the handle and communicated with the connecting hole, the lower end of the injection pipe is fixedly connected with the needle tube, the inner cavity of the needle tube is connected with the piston in a sliding mode, the lower end of the piston is fixedly connected with the connecting rod, and the lower end of the connecting rod is fixedly connected with the finger push block.

3. The infiltration cover of an ablation catheter center electrode of claim 2, wherein: the liquid injection pipe, the needle tube, the connecting rod and the finger pushing block are all made of plastic materials, and the piston is made of rubber materials.

4. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the plurality of wetting holes are used for forming a uniform heat exchange medium protective film outside the electrode.

5. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the infiltration cover is fixed on the electrode, is rotatably arranged on the electrode around the axis of the electrode, or is arranged on the electrode in a sliding manner along the axial direction of the electrode.

6. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the infiltration cover is a cylindrical structure with a closed circumferential direction and is sleeved on the periphery of the electrode, and the infiltration cover only wraps the near-end part of the electrode.

7. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the infiltration cover is fixed on the electrode, a positioning step is arranged on the periphery of the electrode, and the far end of the infiltration cover is abutted against the positioning step for limiting.

8. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the diameters of the infiltration holes are the same, and the infiltration holes and the shunting holes are arranged in a staggered mode.

9. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the outer wall of the electrode is provided with a settling area, the shunt hole is arranged in the settling area, a gap is reserved between the inner wall of the infiltration cover and the surface of the settling area, and the shunt hole is in a flaring shape.

10. The infiltration cover of an ablation catheter center electrode of claim 1, wherein: the ablation catheter is made of insulating high-temperature-resistant materials and is made of materials resistant to high temperature of 150 ℃.