CN208435787U - Double groups of sub- needle RF ablation devices - Google Patents
Double groups of sub- needle RF ablation devices Download PDFInfo
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- CN208435787U CN208435787U CN201720984191.9U CN201720984191U CN208435787U CN 208435787 U CN208435787 U CN 208435787U CN 201720984191 U CN201720984191 U CN 201720984191U CN 208435787 U CN208435787 U CN 208435787U
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Abstract
The utility model relates to a kind of double sub- needle RF ablation devices of group, including two radio-frequency ablation electrode needles, every radio-frequency ablation electrode needle includes shank, outer needle tubing, the outer needle tubing is equipped with insulating layer, the shank is arranged in outer needle tubing and can be in outer needle in-pipe, the side of the shank is axially spaced to be equipped with two groups of sub- needles, and two groups of sub- pin hole slots are correspondingly provided on the outer needle tubing.The present apparatus is used cooperatively equipped with two electrode needles of the device, can increase the completeness of ablation, reduces lesion risk of recurrence.
Description
Technical field
The utility model belongs to medical instruments field, is related to a kind of double sub- needle RF ablation devices of group.
Background technique
Radio-frequency ablation electrode needle is the critical component in radiofrequency ablation therapy system.It has to pass RF ablation effect
Important role.The working end length of radio-frequency ablation electrode needle and the shape of working end directly determine the model of ablated tumor volume
It encloses and the completeness of ablation range.In RF ablation clinic, patient is different, and tumor focus shape size is also different；With
And the patient of multiple tumour, the lesion shape of multiple tumour vary；Now knurl different to these shape sizes at present
Treatment method is also different, and in the radio-frequency ablation electrode needle used at present to the ablation of tumour, some is using an electrode
It is needled into knurl center to be melted, some is pierced into the knurl center opening sub- needle of umbrella using sheath shape single needle and is melted
(Fig. 1), two single needles of use also are pierced into knurl edge and carry out (non-contact) ablation of No-Touch.But it has the problem that, controls
Can all occur the risk recurred after treatment, the risk of three be directly pierced into single needle again it is larger in the case that knurl melts, because
For that can generate certain internal pressure inside lesion tissue, can extrude cancer cell from lesion tissue in radiofrequency ablation procedures, from
And bury the hidden danger of recurrence.Therefore, it is necessary to one kind not to contact directly with lesion, and activating terminal needle extension elongation is adjustable, sub- needle
The radio-frequency ablation electrode needle that can be wrapped up lesion tissue from outside, and work can be adjusted in real time according to lesion shape size
Lesion tissue is completely encapsulated in inside sub- needle by the extension elongation of terminal pins, reaches the completeness of real No-Touch ablation, drop
Low risk of recurrence.
Currently, existing No-Touch radio-frequency ablation technique, is to be punctured to lesion tissue side by two single-needle electrodes
Edge, electric current are flowed between two electrodes, are melted to lesion tissue, but due to using two individual shanks,
So being easy to appear hollow phenomenon, that is, ablation is not exclusively, increases the risk of recurrence in ablation procedure.
Utility model content
In view of this, can increase and disappear the purpose of this utility model is to provide a kind of double sub- needle RF ablation devices of group
The completeness melted reduces lesion risk of recurrence.
In order to achieve the above objectives, the utility model provides the following technical solutions:
Double groups of sub- needle RF ablation devices, including two radio-frequency ablation electrode needles, every radio-frequency ablation electrode needle include needle
Bar, outer needle tubing, the outer needle tubing are equipped with insulating layer, and the shank is arranged in outer needle tubing and can be in outer needle in-pipe, institute
State shank side it is axially spaced be equipped with two groups of sub- needles, two groups of sub- pin hole slots are correspondingly provided on the outer needle tubing.
Further, every group of sub- needle quantity is 3, and the quantity of every group of sub- pin hole slot corresponds to 3.
It further, further include the push-pull device at fixed that radio-frequency ablation electrode needle rear end is set.
Further, the push-pull device at fixed includes adjusting knob, screw rod, shell and nut, and the nut is arranged in shell,
The screw rod attaching nut, end are equipped with adjusting knob, and the shank connects shell, and by rotation of adjustment knob, nut is driven
Shank axial movement.
Further, the material of the sub- needle is memory alloy material.
Further, the shape of the sub- needle is arc.
Further, the section of the sub- pin hole slot is arc, and the radian of radian and sub- needle is adapted.
Further, the front end sharpening of the sub- needle.
Further, the cross section of the sub- needle is round or rectangular.
The utility model has the beneficial effects that: present apparatus structure novel, shank has two groups of sub- needles, before outer needle tubing
There is fixed needle outlet slot at end；Two electrode needles for being equipped with the device are used cooperatively, and are wrapped up lesion by outside by sub- needle
And melt, it is more in line with " no tumor principle ", may be mounted on the radio-frequency ablation electrode needle handle arrangement of the sub- needle of existing single group, it is convenient
It is flexible.
Detailed description of the invention
In order to keep the purpose of this utility model, technical scheme and beneficial effects clearer, the utility model provides as follows
Attached drawing is illustrated:
Fig. 1 is the sub- needle schematic diagram of umbrella in the prior art；
Fig. 2 and Fig. 3 is the structural schematic diagram of radio-frequency ablation electrode needle；
Fig. 4 is the schematic diagram of shank；
Fig. 5 is the structural schematic diagram of outer needle tubing；
Fig. 6 is the structural schematic diagram of the utility model embodiment；
Fig. 7 is that the utility model embodiment uses schematic diagram.
Specific embodiment
Below in conjunction with attached drawing, the preferred embodiment of the utility model is described in detail.
The double sub- needle RF ablation devices of group of the utility model, including two radio-frequency ablation electrode needles, as shown in Figures 2 and 3, often
Branch radio-frequency ablation electrode needle includes shank 1, outer needle tubing 2, and the outer needle tubing 2 is equipped with insulating layer 3, and the setting of shank 1 is outside
It can move in needle tubing 2 and in outer needle tubing 2, the side of the shank 1 is axially spaced to be equipped with two groups of sub- needles 101, outer needle tubing 2
The sub- pin hole slot 201 that front end has the Shuangzi needle for specializing in shank 1 to release and withdraw, sub- pin hole slot 201 are two groups, sub- pin hole slot 201
Shape it is identical with the sub- needle cross-sectional shape on shank 1, every group of sub- needle in the quantity of every group of sub- pin hole slot 201 and shank 1
Quantity is identical namely shank 1 on every root needle have corresponding sub- pin hole slot on outer needle tubing 2, every group of the present embodiment
Sub- needle quantity is 3, and the quantity of every group of sub- pin hole slot corresponds to 3.Since every root needle has corresponding independent needle outlet slot,
So sub- needle will not twist together when needle out and withdrawal.
Fig. 4 is the schematic diagram of the present embodiment shank；Fig. 5 is the structural schematic diagram of outer needle tubing, and two groups of sub- needles of shank 1 are bullet
Property and intensity is higher and restorative good memory alloy material support, preferably selection Nitinol, be welded on shank 1.Son
The cross section design shape of needle 101 is circle or rectangular, and the size of sub- needle cross section need to determine according to requirements, that is to say
When puncture enters tissue, sub- needle cannot be bent because of penetration Resistance and arbitrarily, the front end sharpening of sub- needle, be entered puncturing
Reduce inserting needle resistance when tissue.The outer shape of this embodiment example needle 101 uses arc, releases sub- pin hole in sub- needle in this way
When slot, the smooth resistance of needle is small out, and can wrap lesion well after deployment.Insulating layer 3 is preferably a kind of full
Sufficient biocompatibility, high temperature high voltage resistant, the small and smooth insulating materials of wall thickness.
As further improvement of this embodiment, as shown in fig. 6, being equipped with push-and-pull dress in the rear end of radio-frequency ablation electrode needle
It sets.The push-pull device at fixed includes adjusting knob 4, screw rod 8, shell 6 and nut 5, and the nut 5 is arranged in shell 6, the spiral shell
8 attaching nut 5 of bar, end are equipped with adjusting knob 4, and the shank 1 connects shell 6, passes through rotation of adjustment knob 4,5 band of nut
Dynamic shank 1 moves axially.
Operating process is as follows:
1, outer needle tubing 2 is fixed on push-pull device at fixed, and shank 1 passes through outer needle tubing 2 and is fixed on push-pull device at fixed, rotation is adjusted
Button 4 is saved, the sub- needle 101 on shank 1 just forward extends out two groups of sub- needles along the sub- pin hole slot 201 of outer 2 front end of needle tubing, stretches out son
The size of needle length is adjusted in real time according to actual needs；Push-pull device at fixed on driving handle backward, on exposed shank
Shuangzi needle, just along outer 2 front end of needle tubing sub- pin hole slot 201 withdraw two groups of sub- needles.Adjustable sub- pin hole slot as needed
201 and 101 radian of sub- needle direction.
2, as shown in fig. 7, the radio-frequency ablation electrode needle that will assemble the device, using two, the radio-frequency ablation electrode needle is matched
It closes and uses, when being melted, the outer needle tubing of first radio-frequency ablation electrode needle equipped with the device is punctured to lesion tissue
Left margin is not directly contacted with lesion 7, then the outer needle tubing of second radio-frequency ablation electrode needle equipped with the device is punctured to lesion
The right edge of tissue, is not directly contacted with lesion 7；Then the push-pull device at fixed on first electrode handle is pushed forward, it will be on shank
Two groups of sub- needles from the sub- pin hole slot of outer needle tubing front end release, then further along push second electrode handle on push-and-pull dress
It sets, two groups of sub- needles on shank is released from the sub- pin hole slot of outer needle tubing front end, every electrode stretches out two groups of sub- needles, totally four groups of sons
Lesion is wrapped in centre by needle.
3, two groups of sub- needles of first electrode cannot be contacted with two groups of sub- needles of second electrode, and first electrode connects radio frequency
Anode, second electrode connect radio frequency cathode, and electric current flows between two electrodes, since the sub- needle of shank is from outside by lesion
Tissue encapsulation, so the internal pressure inside lesion tissue is just very small, and the tumour cell in lesion tissue is squeezed in RF ablation
The probability gone out just reduces, more complete package tumour, ablation range than current existing two shanks ablation range more
Big advantage carries out relatively sufficiently complete No-Touch ablation to lesion, reduces the risk recurred after radiofrequency ablation therapy.
Finally, it is stated that preferred embodiment above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent
Pipe has been described in detail the utility model by above preferred embodiment, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The range of restriction.
Claims (9)
1. the sub- needle RF ablation device of pair group, it is characterised in that: including two radio-frequency ablation electrode needles, every radio-frequency ablation electrode
Needle includes shank, outer needle tubing, and the outer needle tubing is equipped with insulating layer, and the shank is arranged in outer needle tubing and can be in outer needle tubing
Mobile, the side of the shank is axially spaced to be equipped with two groups of sub- needles, and two groups of sub- pin hole slots are correspondingly provided on the outer needle tubing.
2. double sub- needle RF ablation devices of group according to claim 1, it is characterised in that: every group of sub- needle quantity is 3,
The quantity of every group of sub- pin hole slot corresponds to 3.
3. double sub- needle RF ablation devices of group according to claim 1, it is characterised in that: further include being arranged in RF ablation
The push-pull device at fixed of electrode needle rear end.
4. double sub- needle RF ablation devices of group according to claim 3, it is characterised in that: the push-pull device at fixed includes adjusting
Knob, screw rod, shell and nut, the nut are arranged in shell, and the screw rod attaching nut, end is equipped with adjusting knob,
The shank connects shell, and by rotation of adjustment knob, nut drives shank axial movement.
5. double sub- needle RF ablation devices of group according to claim 1, it is characterised in that: the material of the sub- needle is memory
Alloy material.
6. double sub- needle RF ablation devices of group according to claim 5, it is characterised in that: the shape of the sub- needle is arc
Shape.
7. double sub- needle RF ablation devices of group according to claim 6, it is characterised in that: the section of the sub- pin hole slot is
The radian of arc, radian and sub- needle is adapted.
8. double sub- needle RF ablation devices of group according to claim 7, it is characterised in that: the front end sharpening of the sub- needle.
9. double sub- needle RF ablation devices of group according to claim 1, it is characterised in that: the cross section of the sub- needle is circle
Shape is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720984191.9U CN208435787U (en) | 2017-08-08 | 2017-08-08 | Double groups of sub- needle RF ablation devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720984191.9U CN208435787U (en) | 2017-08-08 | 2017-08-08 | Double groups of sub- needle RF ablation devices |
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| Publication Number | Publication Date |
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| CN208435787U true CN208435787U (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720984191.9U Expired - Fee Related CN208435787U (en) | 2017-08-08 | 2017-08-08 | Double groups of sub- needle RF ablation devices |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110338903A (en) * | 2019-08-07 | 2019-10-18 | 杭州睿笛生物科技有限公司 | A kind of puncture needle and electrode delivery device for leading electrode |
| WO2020088140A1 (en) * | 2017-11-28 | 2020-05-07 | 杭州诺诚医疗器械有限公司 | Ablation needle component and ablation system |
| US11013553B2 (en) | 2017-11-28 | 2021-05-25 | Hangzhou Nuo Cheng Medical Instrument Co., Ltd. | Treatment method for hypertrophic cardiomyopathy |
-
2017
- 2017-08-08 CN CN201720984191.9U patent/CN208435787U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088140A1 (en) * | 2017-11-28 | 2020-05-07 | 杭州诺诚医疗器械有限公司 | Ablation needle component and ablation system |
| US11013553B2 (en) | 2017-11-28 | 2021-05-25 | Hangzhou Nuo Cheng Medical Instrument Co., Ltd. | Treatment method for hypertrophic cardiomyopathy |
| CN110338903A (en) * | 2019-08-07 | 2019-10-18 | 杭州睿笛生物科技有限公司 | A kind of puncture needle and electrode delivery device for leading electrode |
| WO2021022677A1 (en) * | 2019-08-07 | 2021-02-11 | 杭州睿笛生物科技有限公司 | Puncture needle used for guiding electrode, and electrode conveying device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 Termination date: 20190808 |
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| CF01 | Termination of patent right due to non-payment of annual fee |