CN208404834U - A kind of radio-frequency ablation electrode needle of adjustable active length - Google Patents
A kind of radio-frequency ablation electrode needle of adjustable active length Download PDFInfo
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- CN208404834U CN208404834U CN201721113551.4U CN201721113551U CN208404834U CN 208404834 U CN208404834 U CN 208404834U CN 201721113551 U CN201721113551 U CN 201721113551U CN 208404834 U CN208404834 U CN 208404834U
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- sliding block
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- needle
- casing
- needle body
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Abstract
The utility model relates to a kind of radio-frequency ablation electrode needles of adjustable active length, including handle, needle body and it is all made of sliding block and casing made of insulating materials, the sliding block is tightly sleeved on needle body insulating layer and is flexibly connected with it, it is closely embedded in the casing that end can be free to slide on needle body working end in one end of sliding block, there is gap between the internal diameter of casing and the outer diameter of needle body.The utility model adjusts the length of the needle body working end of electrode needle by insulating sleeve, it can be in the case where being changed without radio-frequency ablation electrode needle, the position for closing on vital tissue and organ according to the size of tumor shape or tumour is far and near, adjust working end length in real time to reach the ablation purpose of different size tumour, and by insulating sleeve to electrode needle working end length block with it is exposed, adjust the output power of RF ablation, so as to avoid the destruction to surrounding tissue cells, the safety of tumour ablation is improved.
Description
Technical field
The utility model relates to the field of medical instrument technology, specifically, refer to a kind of radio frequency of adjustable active length
Ablating electrode needle.
Background technique
Radio-frequency ablation procedure is a kind of minimal invasive neoplasm in situ treatment technology, i.e., by means of images skills such as ultrasound, scope or CT
Art guidance, electrode needle is inserted directly into tumour, so that lesion local organization is generated high temperature, drying, most final set by RF energy
Gu and inactivating soft tissue and tumour.Wherein, radio-frequency ablation electrode needle is the critical component in radiofrequency ablation therapy system, it is to penetrating
Frequency ablation effect has vital effect.And the working end length of radio-frequency ablation electrode needle directly determines ablated tumor volume
Range, RF ablation clinic in, the lesion shape of the patient of multiple tumour, multiple tumour vary；Tumor focus
The patient by vital tissue and organ is closed on, the distance of knub position is uncertain, and the RF ablation that working end length is single
Electrode needle can not adapt to the requirement of oncotherapy in real time.
Currently, radio-frequency ablation electrode needle in the prior art, working end length is unadjustable, over the course for the treatment of, needs
The matched electrode needle of working end length is constantly replaced, the manipulation strength for the treatment of personnel is increased, thus easily causes treatment personnel
Maloperation.Therefore, it is necessary to design a kind of adjustable radio-frequency ablation electrode needle of working end length, can disappear being changed without radio frequency
In the case where melting electrode needle, the position for closing on vital tissue and organ according to lesion shape size or lesion is far and near, adjusts in real time
Whole working end length is to reach the ablation range of different size tumour, so as to the tumour that precision ablation shape size is different,
And it improves lesion and closes on vital tissue and the ablation safety by organ.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of radio-frequency ablation electrode needle of adjustable active length,
To solve the problems, such as that radio-frequency ablation electrode needle working end length in the prior art is unadjustable.
The technical solution that the utility model solves above-mentioned technical problem is as follows:
A kind of radio-frequency ablation electrode needle of adjustable active length is provided, including handle, needle body and is all made of insulation material
Sliding block made of expecting and casing, the sliding block is tightly sleeved on needle body insulating layer and is flexibly connected with it, in one end of sliding block
The close casing for being embedded in end can be free to slide on needle body working end, between having between the internal diameter of casing and the outer diameter of needle body
Gap.
The working principle of the utility model is: sliding block and casing are assembled on radio-frequency ablation electrode needle, since casing is adopted
It is made from an insulative material, so that casing is gradually blocked or expose electrode needle by the sliding block that pushes or pull back according to the size of tumour
Needle body working end, to realize the adjustable purpose of radio-frequency ablation electrode needle working end length.The utility model can be avoided existing
There is the problem of uncontrollable electrode needle of working end length destroys surrounding tissue cells in technology.Similarly, important according to closing on
The position of tissue and organ is far and near, can also achieve the purpose that ablated tumor by adjusting the working end length of electrode needle.
Based on the above technical solution, the utility model can also do following improvement.
Further, resistance-changing resistor device is equipped in the handle, the regulation button on resistance-changing resistor device is by passing through outside handle
The connecting rod of shell is connected with the sliding block, and the interface on resistance-changing resistor device is connect by the identification of data line and RF ablation host
Mouth is connected.
Further, one end of the connecting rod is equipped with the screw connection in insertion sliding block, the other end and tune of connecting rod
Section button is fixedly connected.
Further, the resistance-changing resistor device directly slides potentiometer using slide rheostat or Slide Sensor v1.1.
Further, the outer diameter of described sleeve pipe free end is gradually reduced.
Further, the sliding block has with bell-mouthed centre bore, and described sleeve pipe and sliding block connecting pin are in suitable with horn mouth
The tightening mouth-shaped matched, casing pass through in the centre bore of tightening mouth and bell-mouthed cooperation insertion sliding block.
Further, the side wall of the centre bore is equipped with friction particles, on the lateral wall of described sleeve pipe and sliding block connecting pin
It also is provided with friction particles.
Further, the material of the sliding block is silica gel or latex, and the material of described sleeve pipe is polyimides or Teflon.
Compared with the existing technology, the utility model has the following beneficial effects:
(1) the utility model adjusts the length of the needle body working end of electrode needle by insulating sleeve, can be changed without
In the case where radio-frequency ablation electrode needle, it is remote with the position of organ that vital tissue is closed on according to the size of tumor shape or tumour
Closely, the length of needle body working end is adjusted in real time, to reach the ablation purpose of different size tumour, and by insulating sleeve to electricity
Block and exposed, the output power of adjustable RF ablation of pole needle needle body working end length, so as to avoid to surrounding
Histiocytic destruction improves the safety of tumour ablation.
(2) the utility model adds resistance-changing resistor device in handle, is able to drive regulation button when mobile sliding block and is becoming
It is moved on value resistor, thus change the resistance of resistance-changing resistor device, size of the RF ablation host by detection resistance, one side
It can show that the length value of needle body working end, on the other hand, RF ablation host can also be according to the length of needle body working end
Value matches different output powers and further improves the safety of tumour ablation so that the output power of RF ablation be made to quantify
Property.
(3) the adjustable radio-frequency ablation electrode needle of middle working end length, structure are simple compared with the existing technology for the utility model
It is single, easy to use, it is manufactured without large-scale production equipment, to reduce production cost, improves radio-frequency ablation electrode
The practicability of needle.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model；
Fig. 2 is the structural schematic diagram of sliding block and casing；
Fig. 3 is the attachment structure schematic diagram of sliding block and casing.
In attached drawing, component representated by each label is as follows:
1, handle, 2, needle body insulating layer, 3, needle body working end, 4, needle point, 5, sliding block, 6, casing, 7, centre bore, 8, variate
Resistor, 9, regulation button, 10, connecting rod, 11, interface, 12, bolt, 13, screw connection.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Embodiment 1:
A kind of radio-frequency ablation electrode needle of adjustable active length, as shown in Figure 1 to Figure 3, including the insulation of handle 1, needle body
Layer 2, needle body working end 3, needle point 4, sliding block 5 and casing 6, entire needle body passes through sliding block 5, in order to keep sliding block 5 and needle body close
Connection, a kind of embodiment are needle bodies directly through solid sliding block 5, have biggish bond between such sliding block 5 and needle body
Power sets 0.05 millimeter for the tube wall of casing 6 at this time, and the end of casing 6 can be made easily to be inserted into sliding block 5；It is another real
The mode of applying is the setting centre bore 7 on sliding block 5, and needle body passes through centre bore 7, can guarantee that sliding block 5 is penetrating needle body process in this way
In be not easy positioning.Be 1.8 millimeters of needle body according to outer diameter, then the internal diameter of casing 6 can use 1.83 millimeters, casing 6 it is interior
There is 0.03 millimeter of gap, one side gap can be convenient for movement of the casing 6 on needle body, separately between diameter and the outer diameter of needle body
On the one hand gap can also be prevented excessive and leads to casing 6 there is a phenomenon where folds in use.Above-mentioned sliding block 5 can be
The arbitrary shapes such as spherical, cylindrical, rectangular, hyperbolic cylindricality, depending on the size foundation of sliding block 5 is using needing.
The material of above-mentioned sliding block 5 is insulation and the big material of frictional force, preferably silica gel or latex；The material of above-mentioned casing 6
Matter is insulation and smooth material, preferably polyimides or Teflon.Silica gel or latex elastic pressure with higher, polyamides
Imines or Teflon quality is harder, surface is smooth, when casing 6 is embedded in sliding block 5, can make casing 6 sliding block 5 frictional force with
The lower close connection of extruding force effect, also frictional force and extruding force with higher between sliding block 5 and needle body insulating layer 2, and casing 6
It is the surface of smooth contact between needle body insulating layer 2, therefore, the depth that casing 6 is inserted into sliding block 5 can determine sliding block 5 in needle
The drag size slided on body, such as: when the depth of the insertion sliding block 5 of casing 6 is shallower, then resistance to sliding of the sliding block 5 on needle body
Greatly, convenient for the fixation of sliding block 5；When casing 6 runs through sliding block 5, then resistance to sliding of the sliding block 5 on needle body is small, convenient for the cunning of sliding block 5
Dynamic, user can be inserted into the depth of sliding block 5 by adjusting sleeve pipe 6 according to the needs of use.In addition, polyimides or Teflon high temperature resistant are high
Pressure, is unlikely to deform fold, ensure that the utility model good therapeutic effect.
The utility model is manufactured without high-cost production equipment, greatly reduces production cost, and pass through sliding block 5
It drives casing 6 made of insulating materials to slide on needle body, casing 6 can be made to block to needle body working end 3 or exposed, to adjust
The treatment intensity at markingoff pin body running end 3.
Embodiment 2:
As shown in Figure 1 to Figure 3, in order to make RF ablation host can show that the length value of needle body working end 3, and make
RF ablation host can match different output powers according to the length value of needle body working end 3, to make the defeated of RF ablation
Power quantization out adds model Slide Sensor v1.1 to further increase the safety of tumour ablation in handle 1
Resistance-changing resistor device 8, wherein the regulation button 9 on resistance-changing resistor device 8 is fixedly connected with connecting rod 10, connecting rod 10 it is another
End is connected with sliding block 5, and is equipped with screw connection 13 in one end that connecting rod 10 is embedded in sliding block 5, and sliding block 5 can be made to push away
Will not be mobile relative to regulation button 9 during moving, pulling back, to guarantee the accuracy of RF ablation output power.Connecting rod 10
Across the shell of handle 1, the interface 11 on resistance-changing resistor device 8 is connected by data line with the identification interface of RF ablation host
It connects, resistance-changing resistor device 8 is fixed on the inside of 1 shell of handle by bolt 12.Above-mentioned resistance-changing resistor device 8 can also be become using sliding
Device is hindered to replace.
As shown in Figure 2 and Figure 3, sliding block 5 is equipped with bell-mouthed centre bore 7, and casing 6 and 5 connecting pin of sliding block are in and horn mouth
The tightening mouth-shaped of adaptation consequently facilitating casing 6 is aligned with the horn mouth of sliding block 5, and then makes the easily insertion sliding block 5 of casing 6
Centre bore 7 in.In order to further increase the frictional force between sliding block 5 and casing 6, can also be set on the side wall of centre bore 7
Friction particles are set, are also provided with friction particles on the lateral wall of casing 6 Yu 5 connecting pin of sliding block, after casing 6 is inserted into sliding block 5, are rubbed
It wipes particle and is capable of the inner sidewall of lateral wall to casing 6 and sliding block 5 and form extruding force, so that sliding block 5 be made closely to connect with casing 6
It is connected together.In addition, the outer diameter of 6 free end of casing is gradually reduced, in order to which needle point 4 can smoothly inject patient with casing 6
In vivo.
Embodiment 3:
The utility model provides a kind of installation method of the radio-frequency ablation electrode needle of adjustable active length, selects internal diameter big
It is penetrated in sliding block 5 in the stainless steel tube of needle body outer diameter, stainless steel tube is packed on needle body, make sliding block one end at handle 1, Gu
Fixed slider 5 simultaneously removes stainless steel tube from needle body, and casing 6 is inserted in needle body, casing is held and pushes sliding block 5 to needle point 4
Direction is mobile, until casing 6 is embedded in sliding block 5, finally screws in the screw connection 13 in connecting rod 10 in sliding block, can be complete
At the installation of radio-frequency ablation electrode needle.The utility model on needle body, can be avoided because straight by 5 sets of stainless steel tube guide shoe
It connects and punctures sliding block and cause the curved disconnected of needle body, and the elastic pressure with higher of sliding block 5 made of silica gel, take out stainless steel tube
Afterwards, sliding block 5 can bond needle body tightly.
Embodiment 4:
The utility model also provides a kind of application method of the radio-frequency ablation electrode needle of adjustable active length, by needle point 4
Patient's body is penetrated simultaneously with casing 6, further according to the working end length for needing to adjust radio-frequency ablation electrode needle by sliding block 5:
When pushing sliding block 5 mobile to 4 direction of needle point, casing 6 and sliding block 5 are whole mobile to 4 direction of needle point, make insulation sleeve
Pipe 6 gradually blocks the needle body working end 3 of radio-frequency ablation electrode needle, while sliding block 5 drives regulation button 9 on resistance-changing resistor device 8
Mobile towards 4 direction of needle point, the resistance value of RF ablation Host Detection resistance-changing resistor device 8 shows the length value of needle body working end 3
Show on RF ablation host, and distributes corresponding output power according to the length value that needle body working end 3 is shortened.
When sliding block 5 of pulling back is mobile to 1 direction of handle, casing 6 and sliding block 5 are whole mobile to 1 direction of handle, make insulation sleeve
The needle body working end 3 of radio-frequency ablation electrode needle is gradually exposed in pipe 6, while sliding block 5 drives regulation button 9 on resistance-changing resistor device 8
Mobile backwards to 4 direction of needle point, the resistance value of RF ablation Host Detection resistance-changing resistor device 8 shows the length value of needle body working end 3
Show on RF ablation host, and distributes corresponding output power according to the length value that needle body working end 3 extends.
The utility model according to the size of tumor patient lesion, can the different exposed length in metering needle body running end 3, with
Match the distribution power of RF ablation host.Such as: the total length of needle body working end 3 is 3 centimetres, when tumour is smaller, is pushed
Sliding block 5 makes 2 centimetres of length that needle body working end 3 is exposed, at this time 80 watts of RF ablation host assignment power；When tumour is larger
When, sliding block 5 of pulling back makes 3 centimetres of length that needle body working end 3 is exposed, at this time 120 watts of RF ablation host assignment power.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of radio-frequency ablation electrode needle of adjustable active length, it is characterised in that: adopt including handle (1), needle body and
The sliding block (5) and casing (6) being made from an insulative material, the sliding block (5) are tightly sleeved on needle body insulating layer (2) and live with it
It is dynamic to connect, the casing (6) that end can be free to slide on needle body working end (3), casing are closely embedded in one end of sliding block (5)
(6) there is gap between the outer diameter of internal diameter and needle body.
2. the radio-frequency ablation electrode needle of adjustable active length according to claim 1, it is characterised in that: the handle
(1) resistance-changing resistor device (8) are equipped in, the regulation button (9) on resistance-changing resistor device (8) passes through the connection across handle (1) shell
Bar (10) is connected with the sliding block (5), and the interface (11) on resistance-changing resistor device (8) passes through data line and RF ablation host
Identification interface is connected.
3. the radio-frequency ablation electrode needle of adjustable active length according to claim 2, it is characterised in that: the connecting rod
(10) one end is equipped with the screw connection (13) in insertion sliding block (5), and the other end of connecting rod (10) and regulation button (9) are solid
Fixed connection.
4. the radio-frequency ablation electrode needle of adjustable active length according to claim 3, it is characterised in that: the variate electricity
It hinders device (8) and potentiometer is directly slided using slide rheostat or SlideSensorv1.1.
5. the radio-frequency ablation electrode needle of adjustable active length according to claim 4, it is characterised in that: described sleeve pipe
(6) outer diameter of free end is gradually reduced.
6. the radio-frequency ablation electrode needle of adjustable active length according to any one of claims 1 to 5, it is characterised in that:
The sliding block (5) has with bell-mouthed centre bore (7), and described sleeve pipe (6) is in be adapted to horn mouth with sliding block (5) connecting pin
Mouth-shaped is tightened, casing (6) passes through in tightening mouth and the centre bore (7) of bell-mouthed cooperation insertion sliding block (5).
7. the radio-frequency ablation electrode needle of adjustable active length according to claim 6, it is characterised in that: the centre bore
(7) side wall is equipped with friction particles, also is provided with friction particles on described sleeve pipe (6) and the lateral wall of sliding block (5) connecting pin.
8. the radio-frequency ablation electrode needle of adjustable active length according to any one of claims 1 to 5, it is characterised in that:
The material of the sliding block (5) is silica gel or latex, and the material of described sleeve pipe (6) is polyimides or Teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721113551.4U CN208404834U (en) | 2017-08-31 | 2017-08-31 | A kind of radio-frequency ablation electrode needle of adjustable active length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721113551.4U CN208404834U (en) | 2017-08-31 | 2017-08-31 | A kind of radio-frequency ablation electrode needle of adjustable active length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208404834U true CN208404834U (en) | 2019-01-22 |
Family
ID=65127586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721113551.4U Withdrawn - After Issue CN208404834U (en) | 2017-08-31 | 2017-08-31 | A kind of radio-frequency ablation electrode needle of adjustable active length |
Country Status (1)
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|---|---|
| CN (1) | CN208404834U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374726A (en) * | 2017-08-31 | 2017-11-24 | 绵阳立德电子股份有限公司 | The radio-frequency ablation electrode needle and installation, application method of a kind of adjustable active length |
| CN111685866A (en) * | 2019-08-07 | 2020-09-22 | 上海明石医疗科技有限公司 | Radio frequency ablation electrode |
| CN113081252A (en) * | 2021-05-17 | 2021-07-09 | 广西医科大学 | Mobile radio frequency ablation device |
-
2017
- 2017-08-31 CN CN201721113551.4U patent/CN208404834U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374726A (en) * | 2017-08-31 | 2017-11-24 | 绵阳立德电子股份有限公司 | The radio-frequency ablation electrode needle and installation, application method of a kind of adjustable active length |
| CN107374726B (en) * | 2017-08-31 | 2023-10-20 | 绵阳立德电子股份有限公司 | Radio frequency ablation electrode needle with adjustable working length and mounting method |
| CN111685866A (en) * | 2019-08-07 | 2020-09-22 | 上海明石医疗科技有限公司 | Radio frequency ablation electrode |
| CN113081252A (en) * | 2021-05-17 | 2021-07-09 | 广西医科大学 | Mobile radio frequency ablation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190122 Effective date of abandoning: 20231020 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190122 Effective date of abandoning: 20231020 |