CN205672074U - A kind of working end for radio frequency ablation catheter - Google Patents
A kind of working end for radio frequency ablation catheter Download PDFInfo
- Publication number
- CN205672074U CN205672074U CN201620407493.5U CN201620407493U CN205672074U CN 205672074 U CN205672074 U CN 205672074U CN 201620407493 U CN201620407493 U CN 201620407493U CN 205672074 U CN205672074 U CN 205672074U
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- Prior art keywords
- pin
- sub
- radio frequency
- ablation catheter
- frequency ablation
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Abstract
The utility model discloses a kind of working end for radio frequency ablation catheter, including end cap, the sub-pin that works, support seat and the sub-pin of radio frequency；Work one end of sub-pin and the sub-pin of radio frequency is fixed at end cap；The other end of sub-pin of working is fixed at support seat；The other end of the sub-pin of radio frequency passes through support seat and is connected with the handle of radio frequency ablation catheter；The sub-pin of radio frequency can slide on seat supporting；All sub-with the radio frequency pin in two ends of sub-pin of working electrically connects；The quantity of sub-pin of working is 36, and sub-for radio frequency pin is surrounded centre；The sub-pin that works is Nitinol；The sub-pin of radio frequency is stainless steel or copper.The utility model has sub-pin and is unlikely to deform the advantage that simultaneously can be applicable to more tiny tracheae, and operation principle is simple, easy to operate.
Description
Technical field
The utility model relates to a kind of medicine equipment, particularly relates to a kind of working end for radio frequency ablation catheter.
Background technology
Radio frequency refers to radio frequency, but it is not belonging to the division of radio communication medium wave band, because in such frequency
In the range of radiance very low, therefore less employing in communication apparatus, in the face of the effect of organism is mainly fuel factor.When radio frequency
Power frequency is high to (> 100kHz during certain value), cause charged ion motion i.e. frictional heat (60～100 in tissue
℃).The conventional frequency of radio frequency ablation device is 200～500kHz, and power output determines according to different ablation tissue, for
Generally about 20W for bronchus.
Bronchus hot forming art, is the treating asthma technology of a kind of innovation, imports end cap by bronchoscope, utilizes radio frequency
Energy (or heat) thins the airway smooth muscle (ASM) of hyperplasia in airway walls, thus reduces air flue when SOA shows effect
Shrinkage amplitude, and reduce frequency and the order of severity of outbreak.It is specifically designed for 18 years old and above employing glucocorticoid and long-acting
Beta-receptor agonist treatment be not well controlled and be resistant to the severe persistent asthma of bronchial spectroscopy
Patient.
The product in this field current is mainly the Alair series of products that Boston Science & Technology Co. produces.Alair series of products
Working end in use easily occur sub-pin to deform thus affect service life, affect surgical result, and can not
Acting on the air flue less than 3mm for the diameter, the working face of sub-pin is less.
Utility model content
Because the drawbacks described above of prior art, it is not variable that technical problem to be solved in the utility model is to provide sub-pin
Just as when can be applicable to the working end for radio frequency ablation catheter of more tiny tracheae.The technical solution of the utility model is to carry
For a kind of working end for radio frequency ablation catheter, including end cap, the sub-pin that works, support seat and the sub-pin of radio frequency；Work sub-pin and
One end of the sub-pin of radio frequency is each attached at end cap；The other end of sub-pin of working is fixed at support seat；The other end of the sub-pin of radio frequency
Pass through support seat to be connected with the handle of radio frequency ablation catheter；The sub-pin of radio frequency can slide on seat supporting；Work the two ends of sub-pin
All sub-with radio frequency pin electrically connects；The quantity of sub-pin of working is 3-6 root, and sub-for radio frequency pin is surrounded centre；The sub-pin that works is NiTi
Alloy；The sub-pin of radio frequency is stainless steel or copper；
Working end for radio frequency ablation catheter has the first shape and the second shape, and under the first shape, work sub-pin
Closing up, the working end for radio frequency ablation catheter is arranged to be suitable to move in tracheae or bronchus；Under the second shape,
The sub-pin that works struts so that the sub-pin that works is suitable to the energy by the conduction of sub-for radio frequency pin and acts on tracheae in the way of heat or prop up
Tracheae；The switching of the first shape and the second shape changes end cap by the sub-pin of slip radio frequency and the distance supporting between seat is adjusted
Whole.
Also include thermocouple；Thermocouple is linear, including first end and the second end；The first end of thermocouple is arranged
Working on sub-pin at any one, the second end passes through support seat and is connected with the handle of radio frequency ablation catheter；Thermocouple removes first
Outside end, its pan coating has insulating barrier；The a length of 0.3-0.7mm of first end.Preferably, first end is a length of
0.5mm。
Further, it is fitted in the interior table of any one sub-pin that works from first end to this section of thermocouple supporting seat
Face.
Further, the quantity of sub-pin of working is 4.
Further, the length of sub-pin of working is 30 ± 0.1mm, and wide is 0.36mm, and thickness is 0.1mm.
Further, also including film, the wall thickness of film is 0.01 ± 0.005mm, and film is polyethylene terephthalate
(PET) heat-shrinkable T bush；Film is coated on the two ends of the sub-pin of work.
Further, the coated length of non-tunicle on sub-pin that works is 5-6mm.
Further, the diameter of the sub-pin of radio frequency is 0.25 ± 0.05mm.
Further, that one end pin with radio frequency of close end cap of sub-pin of working is electrically connected by conductive glue.
Further, the working diameter scope for the working end of radio frequency ablation catheter is 1.5-13mm.Working diameter model
Enclosing the minimum working diameter referring to reach when the sub-pin that works closes up is 1.5mm；The maximum work reaching when the sub-pin that works struts
Make a diameter of 13mm.
The utility model is adjusted the working diameter of working end by adjusting the sub-pin of radio frequency at the sliding condition supporting on seat, real
Existing switching between working end the first shape and the second shape.Use the sub-pin of work prepared by Nitinol, be conducive to fully making
With the memory performance of Nitinol, it can be ensured that can all even appropriateness in the position strutting each time.The work that Nitinol makes
Make the design of sub-pin, owing to material therefor heat resistance, toughness are preferable, repeatedly close and strut and be not susceptible to deformation, be conducive to carrying
Rise access times.The design of 4 sub-pins that work, the sub-pin of work beneficially can be made effectively to touch needs work to be processed
Make face；The working diameter that can make again working end under the first shape is sufficiently small, is conducive to entering tracheae or bronchus is carried out
Operation.
Make furtherly below with reference to the technique effect to design of the present utility model, concrete structure and generation for the accompanying drawing
Bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description
Fig. 1 is the cross section signal of the working end for radio frequency ablation catheter of a preferred embodiment of the present utility model
Figure.
Detailed description of the invention
In conjunction with accompanying drawing, the utility model is described further.Being construed as this is not to limit of the present utility model
System, the conventional change done on the utility model also should belong to protection category of the present utility model.
As it is shown in figure 1, a kind of working end for radio frequency ablation catheter involved by the utility model includes end cap the 1st, work
Make sub-pin and the 2nd, support seat the 4th, radio frequency pin the 3rd, film and thermocouple 6.The sub-pin 2 one that works has 4, and Fig. 1 is that sectional view illustrate only
Two sub-pins 2 that work.The sub-pin 2 that works also can have 3,5 or 6.The sub-pin of radio frequency 3 is surrounded by 4 sub-pins 2 that work
, it is fixed on end cap 1 as one end of its one end pin 2 sub-with work, the other end passes through and supports seat 4 and radio frequency ablation catheter
Handle connects (not shown).The other end of sub-pin 2 of working is fixed on support seat 4.Work the close end cap 1 of sub-pin 2
That one end and the sub-pin of radio frequency 3 are connected by conductive glue.The length of sub-pin 2 of working is 30 ± 0.1mm, and wide is 0.36mm, thickness
It is 0.1mm.The diameter of the sub-pin of radio frequency 3 is 0.25 ± 0.05mm.
Film is coated on the two ends of the sub-pin of work 2；The coated length of non-tunicle on sub-pin 2 that works is 5.5 ± 0.5mm.Film
Wall thickness is 0.01 ± 0.005mm, and film is PET heat-shrinkable T bush.
The working diameter scope of a kind of working end for radio frequency ablation catheter involved by the utility model is 1.5-
13mm。
The sub-pin of radio frequency 3 can slide on seat 4 supporting, and changes end cap 1 and the distance supporting between seat 4, it is achieved work
The Guan Bi of pin 2 and strutting, even if the first shape of the working end of radio frequency ablation catheter and the switching of the second shape must be used for.
Thermocouple 6 includes first end 5 and the second end.The second end passes through the hand supporting seat 4 and radio frequency ablation catheter
Handle connects (not shown).It is affixed on the wherein sub-pin that works in from first end 5 to this section of thermocouple supporting seat 4
The inwall of 2.When the sub-pin 2 that works struts, first end 5 is located close to the protruding position of the sub-pin 2 of that root work of its laminating.
There is insulating barrier on the surface of thermocouple 6, but has divested insulating barrier on its surface of the position of first end 5, is so conducive to sense
Know the heat of the sub-pin of work 2.The a length of 0.5mm of first end 5, but its length range can be 0.2-1.0mm.
Support and be provided with 3 U-type groove and 1 groove on seat 4.The sub-pin 2 of that root work with thermocouple 6 is arranged on support
At the groove of seat 4, in order to thermocouple 6 passes through and supports seat 4；The sub-pin 2 of those three work with thermocouple is not separately positioned on and props up
(not shown) in 3 U-type groove of support seat 4.
A kind of principle for the working end of radio frequency ablation catheter that the utility model relates to is: produce by radio-frequency therapeutic equipment
Raw energy conducts energy to the sub-pin of work by the sub-pin of radio frequency so that the latter produces heat and controls the tissue that need to treat
Treat.Thermocouple can real-time detection and heat produced by the transmission sub-pin of work.
The many sub-pins that work realize strutting and drawing action in the sub-pin that works by the handle control sub-pin of radio frequency, and this moves
Make effective working diameter of the adjustable sub-pin of work to treated face of fitting, so be adapted to different size of tracheae or
The treatment of tracheae cavity.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technology neck
In territory, technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model
Test available technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. the working end for radio frequency ablation catheter, it is characterised in that include end cap, the sub-pin that works, support seat and radio frequency
Sub-pin；One end of the sub-pin of described work and the sub-pin of described radio frequency is each attached at described end cap；The other end of the sub-pin of described work
It is fixed at described support seat；The other end of the sub-pin of described radio frequency passes through described support seat and connects with the handle of radio frequency ablation catheter
Connect；The sub-pin of described radio frequency can slide on described support seat；All sub-pin is electrically connected with described radio frequency at the two ends of the sub-pin of described work
Connect；The quantity of the sub-pin of described work is 3-6 root, and sub-for described radio frequency pin is surrounded centre；The sub-pin of described work is Nitinol；
The sub-pin of described radio frequency is stainless steel or copper；
The described working end for radio frequency ablation catheter has the first shape and the second shape, under described first shape, described
The sub-pin that works closes up, and the described working end for radio frequency ablation catheter is arranged to be suitable to move in tracheae or bronchus；
Under described second shape, the sub-pin of described work struts so that the sub-pin of described work is suitable to the energy of sub-for described radio frequency pin conduction
Amount acts on tracheae or bronchus in the way of heat；The switching of described first shape and described second shape is by slip institute
The distance stated between the radio frequency pin described end cap of change and described support seat is adjusted.
2. the working end for radio frequency ablation catheter as claimed in claim 1, it is characterised in that also include thermocouple；Described
Thermocouple is linear, including first end and the second end；The first end of described thermocouple is arranged on any one described work
Making on sub-pin, described the second end passes through described support seat and is connected with the handle wire of radio frequency ablation catheter；Described thermocouple removes
Outside described first end, its pan coating has insulating barrier；The a length of 0.3-0.7mm of described first end.
3. the working end for radio frequency ablation catheter as claimed in claim 2, it is characterised in that from described first end to institute
State and support the inner surface that this section of described thermocouple of seat is fitted in the sub-pin of any one described work.
4. the working end for radio frequency ablation catheter as claimed in claim 1, it is characterised in that the quantity of the sub-pin of described work
It is 4.
5. the working end for radio frequency ablation catheter as claimed in claim 1, it is characterised in that the length of the sub-pin of described work
Being 30 ± 0.1mm, wide is 0.36mm, and thickness is 0.1mm.
6. the working end for radio frequency ablation catheter as claimed in claim 5, it is characterised in that also include film, described film
Wall thickness is 0.01 ± 0.005mm, and described film is PET heat-shrinkable T bush；Described film is coated on the two ends of the sub-pin of described work.
7. the working end for radio frequency ablation catheter as claimed in claim 6, it is characterised in that on the sub-pin of described work not by
The coated length of described film is 5-6mm.
8. the working end for radio frequency ablation catheter as claimed in claim 1, it is characterised in that the diameter of the sub-pin of described radio frequency
It is 0.25 ± 0.05mm.
9. the working end for radio frequency ablation catheter as claimed in claim 1, it is characterised in that the sub-pin of described work close
That one end pin with described radio frequency of end cap is electrically connected by conductive glue.
10. as described in any one of claim 1-9 for the working end of radio frequency ablation catheter, it is characterised in that described be used for
The working diameter scope of the working end of radio frequency ablation catheter is 1.5-13mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407493.5U CN205672074U (en) | 2016-05-06 | 2016-05-06 | A kind of working end for radio frequency ablation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407493.5U CN205672074U (en) | 2016-05-06 | 2016-05-06 | A kind of working end for radio frequency ablation catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205672074U true CN205672074U (en) | 2016-11-09 |
Family
ID=57439097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407493.5U Active CN205672074U (en) | 2016-05-06 | 2016-05-06 | A kind of working end for radio frequency ablation catheter |
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| Country | Link |
|---|---|
| CN (1) | CN205672074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640855A (en) * | 2016-11-10 | 2019-04-16 | 日本来富恩株式会社 | Lung cancer therapy electrode catheter |
-
2016
- 2016-05-06 CN CN201620407493.5U patent/CN205672074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640855A (en) * | 2016-11-10 | 2019-04-16 | 日本来富恩株式会社 | Lung cancer therapy electrode catheter |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |