CN106667576A - Microwave ablation antenna with magnetic localization device - Google Patents
Microwave ablation antenna with magnetic localization device Download PDFInfo
- Publication number
- CN106667576A CN106667576A CN201710135377.1A CN201710135377A CN106667576A CN 106667576 A CN106667576 A CN 106667576A CN 201710135377 A CN201710135377 A CN 201710135377A CN 106667576 A CN106667576 A CN 106667576A
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- China
- Prior art keywords
- magnetic
- syringe needle
- alignment sensor
- microwave
- ablation antenna
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Classifications
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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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/183—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves characterised by the type of antenna
-
- 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1869—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument interstitially inserted into the body, e.g. needles
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
A microwave ablation antenna with a magnetic localization device is characterized by comprising a syringe needle (1), a microwave transmission cable (2), a needle rod (3), a handle (4), a water tank (5), a magnetic localizer (6) and a localization control device (7). One end of the needle rod (3) is connected with the handle (4), the other end of the needle rod (3) is connected with the syringe needle (1), the microwave transmission cable (2) penetrates through the needle rod (3) and is connected with the syringe needle (1), the magnetic localizer (6) comprises a localization sensor (6-1), a connection line (6-2) and a sheath pipe (6-3), the connection line (6-2) of the magnetic localizer (6) is connected with the localization sensor (6-1) at the position of the syringe needle (1), and the sheath pipe (6-3) is arranged on the outer surface of the localization sensor (6-1) and the outer surface of the connection line (6-2). The localization sensor is installed at the position, close to a needle tip, of the microwave ablation antenna, so that the situation that localization precision is affected due to bending of the needle rod is avoided.
Description
Technical field
The present invention relates to microwave ablation techniques field, specifically a kind of microwave ablation antenna with magnetic orientation device,
In clinical ablation operation, the real-time tracking and positioning for treating the three-dimensional coordinate position in tissue is may be implemented in.
Background technology
Microwave thermal ablation techniques are that, under image-guided, microwave ablation antenna percutaneous puncture is to tumor focus position.Microwave
The microwave energy Jing ablation lines of ablatograph transmitting are sent to microwave ablation antenna, and microwave energy passes through microwave ablation antenna spoke
Penetrate and be transmitted to tumor focus tissue, microwave energy makes the polar molecule whirling vibration in tissue and produces heat effect.Microwave ablation
It is that tumor cell coagulation necrosiies are made by the form of heat, to reach oncotherapy purpose.
A vital step of microwave ablation operation is will be the transmitting position (syringe needle) of microwave ablation antenna safe and accurate
The tumor locus for being punctured to treatment, need to avoid rib, blood vessel, important organ etc. in piercing process.
Microwave current ablation antenna mainly has following problem in clinical piercing process：
(1) melt antenna and puncture the doctor for needing to have abundant clinical experience and there are the Professional knowledges such as surgery dissecting, ultrasound
Life is completed.According to the image data information such as ultrasound, CT, MRI, the three dimensions imagination is carried out, the tool current to determine ablation antenna
Body locus, also need to avoid other blood vessels, internal organs.For the new doctor for carrying out microwave ablation research, for numerous constraint bars
Part, aobvious are unable to do what one wishes, have no way of doing it.
(2) in actual clinical treatment, as tumor tissues structure (harden, beat iodine tincture etc.) is more complicated, melt
During image-guided puncture, ablation antenna syringe needle develops unclear in some tissues to antenna, and doctor is not easy
Judge the exact position of current ablation antenna.
Ablation antenna with positioner, can provide ablation antenna three-dimensional position letter in the clinical puncture of ablation
Breath.Under the cooperation that 3-D view processes soft and hardware, Real time dynamic display melts antenna inserting needle route and position.
There is following weak point in the existing ablation antenna with positioner：
(1) ablation antenna its positioner for currently possessing positioner is usually located at the handle of ablation antenna.Disappearing
Melt before antenna dispatches from the factory, the position coordinateses of localizer in handle and syringe needle are carried out into calibration, memorizer is stored in.However, actually facing
When bed treatment is punctured, mast may bend, and now the relative dimensional coordinate position of syringe needle and handle changes, i.e., original
The Calibration Data of storage produces deviation, ultimately causes location position data deviation, affects positioning precision.
(2) the magnetic orientation device that existing ablation antenna is equipped with, there is not waterproof the outside of set winding and prevents the exhausted of short circuit
Edge protection device, when actually used, is likely to result in the situation of magnetic locator short circuit or failure.
The content of the invention
It is an object of the invention to overcome the deficiency of prior art, there is provided a kind of microwave ablation day with magnetic orientation device
Line, magnetic orientation device is installed near the needle point position of microwave ablation antenna, provides essence to melt antenna clinic Needle localization
Quasi- three dimensional local information, and outside offer insulating sheath protection device, prevent set winding Effect of Short Circuit Needle localization.
The present invention is adopted the following technical scheme that：
A kind of microwave ablation antenna with magnetic orientation device, it is characterized in that including syringe needle (1), microwave transmission cable (2),
Shank (3), handle (4), water tank (5), magnetic locator (6) and position control device (7), shank (3) one end is with handle (4) even
Connect, the other end is connected with syringe needle (1), microwave transmission cable (2) is connected with syringe needle (1) through inside shank (3), described magnetic is fixed
Position device (6) include alignment sensor (6-1), connecting line (6-2) and protecting pipe (6-3), the connecting line (6-2) of magnetic locator 6 and
Alignment sensor (6-1) positioned at syringe needle (1) position connects, and alignment sensor (6-1) and connecting line (6-2) outer surface are provided with shield
Sleeve pipe (6-3).
The connecting line (6-2) of the magnetic locator 6 through water tank (5), through in shank (3) and microwave transmission cable (2)
Between space be connected positioned at the alignment sensor (6-1) of syringe needle (1) position, or the connecting line (6-2) of the magnetic locator 6
Through water tank (5), it is connected via the outside alignment sensor (6-1) with positioned at syringe needle (1) position of shank (3).
Microwave power signal Jing microwave transmission cable 2 is sent to syringe needle 1, and microwave signal is radiated treatment by syringe needle 1
In tissue.
The Magnetic oriented signal of alignment sensor (6-1) is transferred to position control device (7) by connecting line (6-2) and carries out
Position information process.Protecting pipe (6-3) is wrapped in sensor (6-1) and connecting line (6-2) is outside, prevents ablation needle interior circulation liquid
The impact of body or short circuit metal to alignment sensor 6-1.
The alignment sensor (6-1) is arranged against the rear end of syringe needle (1).
The integrity of transmitting antenna will not be destroyed, the impedance matching of antenna is not interfered with yet.Alignment sensor (6-1) and
The relative position of syringe needle (1) is fixed, and positioning will not cause error due to the bending of shank.
The position control device (7) includes memorizer (7-1), adapter (7-2), interface unit (7-3), magnetic control list
First (7-4) and magnetic field generator (7-5), as shown in Figure 4.There is positioning in magnet control unit (7-4) control magnetic field generator (7-5)
Simultaneously its electricity of digitized is amplified by interface unit (7-3) in required magnetic field, the location information Jing adapter (7-2) of magnetic locator (6)
Signal, interface unit (7-3) for increasing the transmission range between magnet control unit (7-4) and magnetic locator (6), while maximum
Noise for data is reduced limit, magnet control unit (7-4) receives and parses through the signal of Processing Interface unit (7-3), i.e.,
Obtain the coordinate position of the alignment sensor (6-1) of magnetic locator (6).
Compared with prior art, the invention has the advantages that：
(1) alignment sensor is installed to microwave ablation antenna near the position of needle point by the present invention, that is, avoid due to pin
Rod bending, causes the impact to positioning precision；Shadow will not be caused to the integrity of microwave ablation antenna structure and impedance matching again
Ring.
(2) alignment sensor coil outer of the invention provides insulating sheath protection device, prevents set winding and connection
After line surface fracture, blood, cool circulation water or the metallic conductor for contacting produce short-circuit impact to which.
Description of the drawings
Fig. 1 is the structural representation of the ablation antenna of the present invention.
Fig. 2 is the partial enlarged drawing of A in Fig. 1.
Fig. 3 is along B-B directions sectional view in Fig. 2.
Fig. 4 is the electromagnetism tracing-positioning system theory diagram of the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of microwave ablation antenna with magnetic orientation device, including syringe needle (1), microwave transmission
Cable (2), shank (3), handle (4), water tank (5), magnetic locator (6) and position control device (7), shank (3) one end and handss
Handle (4) connects, and the other end is connected with syringe needle (1), and microwave transmission cable (2) is connected with syringe needle (1) through inside shank (3), institute
The magnetic locator (6) stated includes alignment sensor (6-1), connecting line (6-2) and protecting pipe (6-3), the connecting line of magnetic locator 6
(6-2) be connected positioned at the alignment sensor (6-1) of syringe needle (1) position, alignment sensor (6-1) and connecting line (6-2) appearance
Face is provided with protecting pipe (6-3).
The connecting line (6-2) of the magnetic locator (6) through water tank (5), through shank (3) and microwave transmission cable (2)
Middle space is connected with the alignment sensor (6-1) positioned at syringe needle (1) position, or the connecting line (6- of the magnetic locator 6
2) through water tank (5), it is connected via the outside alignment sensor (6-1) with positioned at syringe needle (1) position of shank (3).
The Magnetic oriented signal of alignment sensor (6-1) is transferred to position control device (7) by connecting line (6-2) and carries out
Position information process.Protecting pipe (6-3) is wrapped in sensor (6-1) and connecting line (6-2) is outside, prevents ablation needle interior circulation liquid
The impact of body or short circuit metal to alignment sensor (6-1).
The alignment sensor (6-1) is arranged against the rear end of syringe needle (1).
The integrity of transmitting antenna will not be destroyed, the impedance matching of antenna is not interfered with yet.Alignment sensor (6-1) and
The relative position of syringe needle (1) is fixed, and positioning will not cause error due to the bending of shank.
The position control device (7) includes memorizer (7-1), adapter (7-2), interface unit (7-3), magnetic control list
First (7-4) and magnetic field generator (7-5), as shown in Figure 4.There is positioning in magnet control unit (7-4) control magnetic field generator (7-5)
Simultaneously its electricity of digitized is amplified by interface unit (7-3) in required magnetic field, the location information Jing adapter (7-2) of magnetic locator (6)
Signal, interface unit (7-3) for increasing the transmission range between magnet control unit (7-4) and magnetic locator (6), while maximum
Noise for data is reduced limit, magnet control unit (7-4) receives and parses through the signal of Processing Interface unit (7-3), i.e.,
Obtain the coordinate position of the alignment sensor (6-1) of magnetic locator (6).
Magnetic locator 6 includes alignment sensor (6-1), connecting line (6-2), protecting pipe (6-3) composition, as shown in Figure 2.Magnetic
Localizer (6) can be 5DOF Sensor (such as model 610005,610099,610090 etc.), or 6DOF Sensor
(such as model 610029,610059 etc.).Alignment sensor (6-1) Magnetic oriented signal is transferred to positioning by connecting line (6-2)
Control device (7) carries out position information process.Protecting pipe (6-3) is wrapped in sensor (6-1) and connecting line (6-2) is outside, prevents
The only impact of ablation needle interior circulation liquid or short circuit metal to alignment sensor (6-1).Protecting pipe (6-3) can adopt plastics material
Material, it would however also be possible to employ without magnetic metal material.
Magnetic locator (6) and position control device (7) composition ablation needle tracing-positioning system, the system are tracked using electromagnetism
Alignment system, electromagnetism tracing-positioning system can be realized being accurately positioned in the case where blocking, such as NDI Aurora electromagnetism with
Track alignment system.Magnetic locator (6) receives Magnetic oriented information, and position control device (7) produces the signal needed for positioning, and
The location information dissection process of magnetic locator (6) are received, to obtain the coordinate that magnetic locator (6) melts syringe needle (1)
Position.
As magnetic locator (6) and ablation needle syringe needle (1) have a certain distance, in ablative surgery, it would be desirable to know
Road is the position for melting antenna pointed end, so what memorizer (7-1) was demarcated for storage ablation antenna pointed end and magnetic locator 6
Relative position information, memorizer (7-1) are single line memory SROM.Electromagnetism tracing-positioning system can also be Ascension 3D
Guidance medSAFE medical 3 D navigation system.
Microwave power signal Jing microwave transmission cable (2) is sent to syringe needle (1), and microwave signal passes through syringe needle
(1) it is radiated in the tissue for the treatment of.Syringe needle and shank adopt high intensity, non-magnetic medical stainless steel tube material,
Titanium alloy material can also be adopted, and prevent from the impact of hour hands rod bending or magnetisable material to positioning precision being punctured clinical.Microwave
Transmission cable (2) transmits microwave power signal using coaxial cable.
Embodiment described above is only that the preferred embodiment of the present invention is described, not the structure to the present invention
Think and scope is defined, under the premise of without departing from design concept of the present invention, ordinary skill technical staff is to this in this area
Various modifications and improvement that bright technical scheme is made, all should fall into protection scope of the present invention, the skill that the present invention is claimed
Art content has all been recorded in detail in the claims.
Claims (5)
1. a kind of microwave ablation antenna with magnetic orientation device, is characterized in that including syringe needle (1), microwave transmission cable (2), pin
Bar (3), handle (4), water tank (5), magnetic locator (6) and position control device (7), shank (3) one end are connected with handle (4),
The other end is connected with syringe needle (1), and microwave transmission cable (2) is connected with syringe needle (1) through inside shank (3), described magnetic orientation
Device (6) includes alignment sensor (6-1), connecting line (6-2) and protecting pipe (6-3), the connecting line (6-2) of magnetic locator 6 and position
Alignment sensor (6-1) in syringe needle (1) position connects, and alignment sensor (6-1) and connecting line (6-2) outer surface are provided with sheath
Pipe (6-3).
2. described a kind of microwave ablation antenna with magnetic orientation device according to claim 1, is characterized in that described
The connecting line (6-2) of magnetic locator 6 through water tank (5), through space and position in the middle of shank (3) and microwave transmission cable (2)
Alignment sensor (6-1) in syringe needle (1) position connects, or the connecting line (6-2) of the magnetic locator 6 is through water tank (5),
It is connected via the outside alignment sensor (6-1) with positioned at syringe needle (1) position of shank (3).
3. described a kind of microwave ablation antenna with magnetic orientation device according to claim 1, is characterized in that described
Alignment sensor (6-1) is arranged against the rear end of syringe needle (1).
4. described a kind of microwave ablation antenna with magnetic orientation device according to claim 1, is characterized in that described
The relative position of alignment sensor (6-1) and syringe needle (1) is fixed.
5. described a kind of microwave ablation antenna with magnetic orientation device according to claim 1, is characterized in that described
Position control device (7) includes memorizer (7-1), adapter (7-2), interface unit (7-3), magnet control unit (7-4) and magnetic
There is the magnetic field needed for positioning, magnetic locator in field generator (7-5), magnet control unit (7-4) control magnetic field generator (7-5)
(6) location information Jing adapter (7-2) amplifies simultaneously its signal of telecommunication of digitized by interface unit (7-3), and interface unit (7-3) is used
In the transmission range between magnet control unit (7-4) and magnetic locator (6) is increased, while being reduced for data to greatest extent
Noise, magnet control unit (7-4) receive and parse through the signal of Processing Interface unit (7-3), that is, obtain the positioning of magnetic locator (6)
The coordinate position of sensor (6-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135377.1A CN106667576A (en) | 2017-03-08 | 2017-03-08 | Microwave ablation antenna with magnetic localization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135377.1A CN106667576A (en) | 2017-03-08 | 2017-03-08 | Microwave ablation antenna with magnetic localization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106667576A true CN106667576A (en) | 2017-05-17 |
Family
ID=58828710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710135377.1A Pending CN106667576A (en) | 2017-03-08 | 2017-03-08 | Microwave ablation antenna with magnetic localization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106667576A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104042337A (en) * | 2013-03-15 | 2014-09-17 | 柯惠有限合伙公司 | Microwave energy-delivery device and system |
| CN204708979U (en) * | 2015-07-23 | 2015-10-21 | 南京康友医疗科技有限公司 | A kind of ablation needle with positioner |
| CN106333743A (en) * | 2016-08-16 | 2017-01-18 | 深圳市惠泰医疗器械有限公司 | Magnetic-positioning cold saline radio frequency ablation electrode catheter |
-
2017
- 2017-03-08 CN CN201710135377.1A patent/CN106667576A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104042337A (en) * | 2013-03-15 | 2014-09-17 | 柯惠有限合伙公司 | Microwave energy-delivery device and system |
| CN204708979U (en) * | 2015-07-23 | 2015-10-21 | 南京康友医疗科技有限公司 | A kind of ablation needle with positioner |
| CN106333743A (en) * | 2016-08-16 | 2017-01-18 | 深圳市惠泰医疗器械有限公司 | Magnetic-positioning cold saline radio frequency ablation electrode catheter |
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| PB01 | Publication | ||
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Application publication date: 20170517 |