CN112641503A - Tumor radio frequency ablation device - Google Patents
Tumor radio frequency ablation device Download PDFInfo
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- CN112641503A CN112641503A CN202011563238.7A CN202011563238A CN112641503A CN 112641503 A CN112641503 A CN 112641503A CN 202011563238 A CN202011563238 A CN 202011563238A CN 112641503 A CN112641503 A CN 112641503A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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Abstract
The invention relates to a tumor radio frequency ablation device, which comprises: the left part in the needle tube is fixedly provided with a cylindrical guide part, the middle part of the guide part is provided with a first channel along the axial direction, a plurality of second channels are arranged along the axial circumferential direction, and the left ends of the second channels are bent outwards; the needle point is conical and fixedly arranged at the left end of the needle tube, and a channel IV and a channel V which respectively correspond to the channel I and the channel II are arranged on the needle point, so that the main electrode needle linearly penetrates out from the tip end of the needle point, and the sub-electrode needles are divergently distributed outwards after penetrating out from the side surface of the needle point; the fixed handle is integrally cylindrical, and the left end of the fixed handle is fixedly connected with the needle tube; the electrode needle comprises a main electrode needle and a sub-electrode needle, the right ends of the main electrode needle and the sub-electrode needle are fixedly connected with an electrode needle seat, the main electrode needle is a tubular needle, and the electrode needle is electrically connected with an electric plug; the left end of the electrode push rod is fixedly connected with the electrode needle seat; and the left end of the rotating rod is rotatably hinged with the right end of the electrode push rod.
Description
Technical Field
The invention relates to a tumor radio frequency ablation device, and particularly belongs to the technical field of medical instruments.
Background
Radio Frequency Ablation (RFA) is a thermal coagulation therapy, which is a novel minimally invasive treatment method for inactivating tumor cells by utilizing radio frequency alternating current with the wavelength of 460-500 kHz and enabling charged particles in surrounding tissues to generate heat through high-speed oscillation and friction by a radio frequency electrode needle, wherein the temperature can reach 50-110 ℃, and tumor cells surrounding the electrode generate coagulative necrosis. The radiofrequency ablation has the advantages of wide application range, small wound, definite curative effect, repeated treatment, low cost and the like, provides a new selection way for patients who cannot accept or do not want to accept the operation, is widely applied to treating various tumors such as liver, lung, kidney, prostate, pancreas, uterine fibroid and the like, arrhythmia diseases such as atrial fibrillation and the like, and the development of the radiofrequency electrode is a determining factor for determining the technical level of the radiofrequency ablation. The prior radio-frequency electrode has a small sectional area and a limited treatment range, but the electrode cannot meet the requirements of most clinical cases due to the limitation of the shape, so the application of the electrode is limited, and the needle tube is easy to fall off along with the increase of the use times, thereby influencing the treatment progress. Aiming at the problems, the invention provides the tumor radio frequency ablation device which has the advantages of simple structure, convenience in temperature control and regulation, easiness in penetrating into tumors by an electrode needle, good radio frequency treatment effect and more use times.
Disclosure of Invention
The invention aims to solve the technical problem of providing a tumor radio frequency ablation device which has simple structure, convenient control and temperature regulation, easy penetration of an electrode needle into a tumor, good radio frequency treatment effect and more use times.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a tumor radio frequency ablation device, comprising:
the left part in the needle tube is fixedly provided with a cylindrical guide part, the middle part of the guide part is provided with a first channel along the axial direction, a plurality of second channels are arranged along the axial circumferential direction, and the left ends of the second channels are bent outwards;
the needle point is conical and fixedly arranged at the left end of the needle tube, and a channel IV and a channel V which respectively correspond to the channel I and the channel II are arranged on the needle point, so that the main electrode needle linearly penetrates out from the tip end of the needle point, and the sub-electrode needles are divergently distributed outwards after penetrating out from the side surface of the needle point;
the fixed handle is integrally cylindrical, and the left end of the fixed handle is fixedly connected with the needle tube;
the electrode needle comprises a main electrode needle and a sub-electrode needle, the right ends of the main electrode needle and the sub-electrode needle are fixedly connected with an electrode needle seat, the main electrode needle is a tubular needle, and the electrode needle is electrically connected with an electric plug;
the left end of the electrode push rod is fixedly connected with the electrode needle seat, the electrode push rod is positioned inside the needle tube and the fixing handle, the middle part of the electrode push rod is provided with a liquid guide channel along the axial direction, and the main electrode needle is communicated with the liquid guide channel; a plurality of guide clamping blocks are fixedly arranged on the right side surface of the electrode push rod along the axial direction, and a plurality of guide clamping grooves matched with the guide clamping blocks are formed in the inner wall of the left part of the fixed handle;
the left end of the rotary rod is rotatably hinged with the right end of the electrode push rod, a thread structure is arranged between the rotary rod and the right part of the fixed handle, a channel seven is axially arranged in the middle of the rotary rod, a liquid injection pipe is arranged in the channel seven, one end of the liquid injection pipe is communicated with the liquid guide channel, and the other end of the liquid injection pipe is connected with a liquid injection device.
As a further improvement of the invention, a third channel is axially arranged on the guide part, a temperature sensor is fixedly arranged at the left end of the third channel, a first cable is arranged in the third channel, one end of the first cable is connected with the temperature sensor, and the other end of the first cable is electrically connected with a display screen fixedly arranged on the fixed handle.
As a further improvement of the invention, the electrode push rod is provided with a through hole along the axial direction, and the electrode needle base is electrically connected with an electric plug fixedly arranged on the fixed handle through a cable II arranged in the through hole.
As a further improvement of the invention, the liquid guide channel is a metal tube arranged in the electrode push rod, the left end of the liquid guide channel is contacted with the main electrode needle for conducting, and the outer wall of the right end of the liquid guide channel is electrically connected with an electric plug fixedly arranged on the fixed handle through a third cable.
As a further improvement of the invention, a channel six which passes through the second cable or the third cable is arranged on the fixed handle.
As a further improvement of the invention, the right end of the electrode push rod is fixedly provided with a connecting block, the right end of the connecting block is provided with a cylindrical groove, the left end of the rotating rod is fixedly provided with a cylindrical lug, the lug can be clamped in the groove in a rotary manner, the channel seven penetrates out of the lug, and the liquid injection pipe is connected with the liquid guide channel through a connector.
As a further improvement of the invention, the right end of the rotating rod is sleeved with a rotating handle made of rubber or silica gel.
As a further improvement of the invention, the left ends of the second channel and the fifth channel are matched to form an arc-shaped channel.
As a further improvement of the invention, the left end of the second channel is matched with the left end of the fifth channel, the left end of the second channel is arc-shaped, and the left end of the fifth channel is spiral.
As a further improvement of the invention, the sub-electrode needle is made of plastic metal.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the tumor radiofrequency ablation device provided by the invention has the advantages of simple structure, good radiofrequency treatment effect and more use times, the temperature of an ablation area can be obtained in real time by arranging the temperature sensor, and the operation safety of radiofrequency ablation can be improved by adjusting through the controller. The main electrode needle is in a hollow tube shape, liquid medicines such as physiological saline and the like can be injected to the ablation area through the liquid injection tube and are uniformly distributed to the tumor treatment area, the tumor tissue can be softened, meanwhile, the ionic solution (such as saline, dilute hydrochloric acid and the like) can improve the ionic concentration of the biological tissue, the tissue conductivity can be changed, and the ablation effect is improved. Through setting up the guide part provides the support for the electrode needle, and distortion when preventing to pierce the tumour, the electrode needle pierces in the tumour more easily. By arranging the main electrode needle and the sub-electrode needles, the ablation area is increased, the treatment range is enlarged, and the radio frequency treatment effect is better. The right part of the fixed handle 2 can be provided with scales, the electrode needle is controlled to come in and go out of the needle tube by rotating the rotating rod, and the length of the electrode needle for penetrating into the tumor is more accurately and conveniently controlled.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a further enlarged partial schematic view at a1 in fig. 1.
Fig. 4 is a partially enlarged schematic view of fig. 1 at B.
Fig. 5 is a partially enlarged schematic view at C in fig. 1.
Fig. 6 is a partially enlarged schematic view at D in fig. 1.
Fig. 7 is a partially enlarged schematic view of fig. 1 at E.
Fig. 8 is a partially enlarged schematic view of fig. 1 at F.
Fig. 9 is a right-side view schematically showing the structure of the guide part of the present invention.
Wherein: the device comprises a needle tube 1, a fixed handle 2, a guide clamping groove 201, an electrode needle 3, a main electrode needle 301, a sub-electrode needle 302, a guide part 4, a guide part channel 5, a channel I501, a channel II 502, a channel III 503, a needle point 6, a needle point channel 7, a channel IV 701, a channel V702, a temperature sensor 8, a cable I9, an electrode needle seat 10, an electrode push rod 11, a guide clamping block 1101, a liquid guide channel 12, a cable II 13, a cable III 14, a channel VI 15, an electric plug 16, a display screen 17, a connecting block 18, a groove 1801, a rotating rod 19, a projection 1901, a channel seven 1902, a connecting head 20, a liquid injection tube 21, a thread structure 22 and a rotating handle 23.
Detailed Description
For purposes of clarity and a complete description of the present invention, and the like, in conjunction with the detailed description, it is to be understood that the terms "central," "vertical," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the present invention, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
A tumor rf ablation device as shown in fig. 1-9, comprising:
the needle tube 1 is characterized in that a cylindrical guide part 4 is fixedly arranged at the inner left part of the needle tube 1, a first channel 501 is axially arranged in the middle of the guide part 4, a plurality of second channels 502 are axially and circumferentially arranged, and the left ends of the second channels 502 are outwards bent;
the needle point 6 is conical and solid and is fixedly arranged at the left end of the needle tube 1, a channel IV 701 and a channel V702 which correspond to the channel I501 and the channel II 502 respectively are arranged on the needle point 6, so that the main electrode needle 301 linearly penetrates out from the tip end of the needle point 6, and the sub-electrode needles 302 are divergently distributed outwards after penetrating out from the side surface of the needle point 6;
the fixed handle 2 is integrally cylindrical, and the left end of the fixed handle is fixedly connected with the needle tube 1;
the electrode needle 3 comprises a main electrode needle 301 positioned in the center and a plurality of sub-electrode needles 302 which are uniformly surrounded around the main electrode needle 301 in an umbrella shape, the right ends of the main electrode needle 301 and the sub-electrode needles are fixedly connected with an electrode needle seat 10, wherein the main electrode needle 301 is a tubular needle, and the electrode needle 3 is electrically connected with an electric plug 16; the main electrode needle 301 is located in the first channel 501 and the fourth channel 701, and the sub-electrode needle 302 is located in the second channel 502 and the fifth channel 702.
The left end of the electrode push rod 11 is fixedly connected with the electrode needle seat 10, the electrode push rod 11 is positioned inside the needle tube 1 and the fixing handle 2, the middle part of the electrode push rod 11 is provided with a liquid guide channel 12 along the axial direction, and the main electrode needle 301 is communicated with the liquid guide channel 12; a plurality of guide clamping blocks 1101 are fixedly arranged on the side surface of the right part of the electrode push rod 11 along the axial direction, and a plurality of guide clamping grooves 201 matched with the guide clamping blocks 1101 are formed in the inner wall of the left part of the fixed handle 2;
the left end of the rotating rod 19 is rotatably hinged with the right end of the electrode push rod 11, a thread structure 22 is arranged between the rotating rod 19 and the right part of the fixed handle 2, a channel seven 1902 is axially arranged in the middle of the rotating rod 19, a liquid injection pipe 21 is arranged in the channel seven 1902, one end of the liquid injection pipe 21 is communicated with the liquid guide channel 12, and the other end of the liquid injection pipe is connected with a liquid injection device. The thread structure 22 comprises an internal thread arranged inside the right end of the fixed handle 2 and an external thread arranged outside the rotating rod 19 and matched with the internal thread.
In addition, the tumor radio-frequency ablation device also comprises a radio-frequency source controller and a radio-frequency therapeutic apparatus, and the tumor radio-frequency ablation device is controlled and adjusted to ensure the stability and reliability of work.
The tumor radiofrequency ablation device provided by the invention has the advantages of simple structure, good radiofrequency treatment effect and more use times, the temperature of an ablation area can be obtained in real time by arranging the temperature sensor 8, and the operation safety of radiofrequency ablation can be improved by adjusting through the controller. The main electrode needle 301 is hollow tube-shaped, and can inject liquid medicines such as normal saline into the ablation area through the liquid injection tube 21, and the liquid medicines are uniformly distributed on the tumor treatment area, so that the tumor tissue can be softened, and meanwhile, the ionic solution (such as saline, dilute hydrochloric acid and the like) can improve the ionic concentration of the biological tissue, change the conductivity of the tissue, and improve the ablation effect. Through setting up guide part 4 provides the support for electrode needle 3, and distortion when preventing to pierce the tumour, electrode needle 3 pierces in the tumour more easily. By arranging the main electrode needle 301 and the sub-electrode needles 302, the ablation area is increased, the treatment range is enlarged, and the radio frequency treatment effect is better. The right part of the fixed handle 2 can be provided with scales, the electrode needle 3 is controlled to come in and go out of the needle tube 1 by rotating the rotating rod 19, and the length of the electrode needle 3 for puncturing the tumor is more accurately and conveniently controlled.
In this embodiment, a third channel 503 is axially formed on the guide portion 4, a temperature sensor 8 is fixedly arranged at the left end of the third channel 503, and the temperature sensor 8 is attached to the needle tip 6 or is located on the outer wall surface of the needle tube 2, so as to monitor the temperature of the ablation area in real time. Be equipped with cable 9 in the passageway three 503, cable 9 one end with temperature sensor 8 links to each other, the other end with set firmly in display screen 17 electric connection on the fixed handle 2, cable 9 is worn out the back from passageway three 503 right-hand member, from electrode push rod 11 with clearance between needle tubing 1 and the fixed handle 2 passes through, is connected with display screen 17 on the fixed handle 2 at last, be equipped with on the fixed handle 2 through the passageway that cable 9 wore out.
A through hole is axially formed in the electrode push rod 11, and the electrode needle base 10 is electrically connected with an electric plug 16 fixedly arranged on the fixed handle 2 through a cable II 13 arranged in the through hole. In another embodiment, the liquid guiding channel 12 is a metal tube disposed in the electrode push rod 11, the left end of the liquid guiding channel 12 is in contact with the main electrode needle 301 for conducting electricity, and the outer wall of the right end is electrically connected to an electrical plug 16 fixed on the fixed handle 2 through a third cable 14, in this embodiment, the metal tube conducts electricity. And a channel six 15 through which the second cable 13 or the third cable 14 passes is arranged on the fixed handle 2. The first cable 9, the second cable 13 and the third cable 14 are provided with margins in the fixed handle 2, so that the cables cannot be broken when the rotating rod 19 moves back and forth along the fixed handle 2, and as a further optimization, the connecting block 18 is cylindrical, the outer diameter of the connecting block is matched with the inner diameter in the fixed handle 2, and the rotating rod 19 is prevented from extruding the cables when moving back and forth along the fixed handle 2.
The right end of the electrode push rod 11 is fixedly provided with a connecting block 18, the right end of the connecting block 18 is provided with a cylindrical groove 1801, the left end of the rotating rod 19 is fixedly provided with a cylindrical lug 1901, the lug 1901 can be turned round and clamped in the groove 1801, the channel seven 1902 is penetrated out of the lug 1901, and the liquid injection pipe 21 is communicated with the liquid guide channel 12 through a connector 20.
The right end of the rotating rod 19 is sleeved with a rotating handle 23 made of rubber or silica gel.
In one embodiment, the left ends of the second channel 502 and the fifth channel 702 are matched to form an arc-shaped channel. After the sub-electrode needle 302 comes out of the arc-shaped channel, the sub-electrode needle automatically scatters and bends outwards to enlarge an ablation area.
As another embodiment, the left ends of the second channel 502 and the fifth channel 702 are matched, the left end of the second channel 502 is arc-shaped, and the left end of the fifth channel 702 is spiral-shaped. When the sub-electrode needle 302 is made of plastic metal, the sub-electrode needle 302 naturally forms a spiral needle after passing through the spiral channel five 702, so that the ablation area is enlarged, and the economic cost is greatly saved compared with the memory alloy.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A tumor radio frequency ablation device, comprising:
the needle tube (1) is fixedly provided with a cylindrical guide part (4) at the inner left part, a first channel (501) is formed in the middle of the guide part (4) along the axial direction, a plurality of second channels (502) are formed in the axial direction and the circumferential direction, and the left end of each second channel (502) is bent outwards;
the needle point (6) is conical and is fixedly arranged at the left end of the needle tube (1), a channel IV (701) and a channel V (702) which respectively correspond to the channel I (501) and the channel II (502) are arranged on the needle point (6), so that the main electrode needle (301) linearly penetrates out from the tip end of the needle point (6), and the sub-electrode needles (302) are divergently distributed outwards after penetrating out from the side surface of the needle point (6);
the fixed handle (2) is integrally cylindrical, and the left end of the fixed handle is fixedly connected with the needle tube (1);
the electrode needle (3) comprises a main electrode needle (301) and a sub-electrode needle (302), the right ends of the main electrode needle (301) and the sub-electrode needle (302) are fixedly connected with an electrode needle seat (10), wherein the main electrode needle (301) is a tubular needle, and the electrode needle (3) is electrically connected with an electric plug (16);
the left end of the electrode push rod (11) is fixedly connected with the electrode needle seat (10), the electrode push rod (11) is positioned inside the needle tube (1) and the fixing handle (2), a liquid guide channel (12) is formed in the middle of the electrode push rod (11) along the axial direction, and the main electrode needle (301) is communicated with the liquid guide channel (12); a plurality of guide clamping blocks (1101) are fixedly arranged on the side surface of the right part of the electrode push rod (11) along the axial direction, and a plurality of guide clamping grooves (201) matched with the guide clamping blocks (1101) are formed in the inner wall of the left part of the fixed handle (2);
rotary rod (19), its left end with rotatable the articulating of electrode push rod (11) right-hand member is in the same place, be equipped with helicitic texture (22) between rotary rod (19) and fixed handle (2) right part, seven (1902) of passageway have been seted up along the axial in rotary rod (19) middle part, be equipped with in seven (1902) of passageway and annotate liquid pipe (21), annotate liquid pipe (21) one end and drain passageway (12) and be linked together, the other end is connected with the priming device.
2. The radiofrequency ablation device for tumors of claim 1, wherein: the guide part (4) is provided with a third channel (503) along the axial direction, the left end of the third channel (503) is fixedly provided with a temperature sensor (8), the third channel (503) is internally provided with a first cable (9), one end of the first cable (9) is connected with the temperature sensor (8), and the other end of the first cable is electrically connected with a display screen (17) fixedly arranged on the fixed handle (2).
3. The radiofrequency ablation device for tumors of claim 1, wherein: a through hole is formed in the electrode push rod (11) along the axial direction, and the electrode needle seat (10) is electrically connected with an electric plug (16) fixedly arranged on the fixed handle (2) through a second cable (13) arranged in the through hole.
4. The radiofrequency ablation device for tumors of claim 1, wherein: the liquid guide channel (12) is a metal tube arranged in the electrode push rod (11), the left end of the liquid guide channel (12) is in contact with the main electrode needle (301) for conducting electricity, and the outer wall of the right end of the liquid guide channel is electrically connected with an electric plug (16) fixedly arranged on the fixed handle (2) through a third cable (14).
5. A radio frequency ablation device according to claim 3 or 4, wherein: and a channel six (15) passing through the cable two (13) or the cable three (14) is arranged on the fixed handle (2).
6. The radiofrequency ablation device for tumors of claim 1, wherein: electrode push rod (11) right-hand member has set firmly connecting block (18), cylindrical recess (1801) has been seted up to connecting block (18) right-hand member, cylindrical lug (1901) have been set firmly to rotary rod (19) left end, the card that lug (1901) can convolute is established in recess (1801), seven (1902) of passageway are followed wear out on lug (1901), annotate liquid pipe (21) through connector (20) with drain passageway (12) link to each other.
7. The radiofrequency ablation device for tumors of claim 1, wherein: the right end of the rotating rod (19) is sleeved with a rotating handle (23) made of rubber or silica gel.
8. The radiofrequency ablation device for tumors of claim 1, wherein: the left ends of the second channel (502) and the fifth channel (702) are matched to form an arc-shaped channel.
9. The radiofrequency ablation device for tumors of claim 1, wherein: the left ends of the second channel (502) and the fifth channel (702) are matched, the left end of the second channel (501) is arc-shaped, and the left end of the fifth channel (702) is spiral.
10. The radiofrequency ablation device for tumors of claim 9, wherein: the sub-electrode needle (302) is made of plastic metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011563238.7A CN112641503A (en) | 2020-12-25 | 2020-12-25 | Tumor radio frequency ablation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011563238.7A CN112641503A (en) | 2020-12-25 | 2020-12-25 | Tumor radio frequency ablation device |
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| CN112641503A true CN112641503A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011563238.7A Pending CN112641503A (en) | 2020-12-25 | 2020-12-25 | Tumor radio frequency ablation device |
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| CN (1) | CN112641503A (en) |
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| CN113081252A (en) * | 2021-05-17 | 2021-07-09 | 广西医科大学 | Mobile radio frequency ablation device |
| WO2023235337A1 (en) * | 2022-06-02 | 2023-12-07 | Squirrel Corporation | Apparatus and methods for tumor ablation |
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Application publication date: 20210413 |