CN104586502A - Spinal puncture guide needle - Google Patents
Spinal puncture guide needle Download PDFInfo
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- CN104586502A CN104586502A CN201510047059.0A CN201510047059A CN104586502A CN 104586502 A CN104586502 A CN 104586502A CN 201510047059 A CN201510047059 A CN 201510047059A CN 104586502 A CN104586502 A CN 104586502A
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- guide pin
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Abstract
The invention discloses a spinal puncture guide needle. A plurality of channels for radio-frequency electrodes to enter are formed in the guide needle; the inlet ends of the channels are positioned on the tail part of the guide needle; the outlet ends of the channels are positioned on the head of the guide needle; the plurality of channels comprise at least one parallel channel and a plurality of oblique channels; the parallel channel and the oblique channels are parallel to each other at the inlet ends; the parallel channel keeps in parallel with the inlet ends at the inlet ends; the oblique channels incline relative to the inlet ends at the outlet ends; the oblique channels incline towards one direction at the outlet ends; the inclination angle of each oblique channel differs. According to the spinal puncture guide needle, the insertion directions of the radio-frequency electrodes are guided accurately, so that spinal tumors are ablated through multi-needle accurate guided puncture, the radio-frequency electrodes reach a predetermined spinal position according to a designed angle direction, a whole spinal structure can be covered fully, all tumor tissues in a whole spinal body are ablated at one time, an effect of killing all the tumor cells in the whole spinal body is achieved, the operation time is shortened, and pain of a patient is relived.
Description
Technical field
The invention belongs to radio-frequency (RF) ablation pricking device technical field, be specifically related to a kind of thecal puncture guide pin.
Background technology
The complexity of ridge cone anatomical structure causes ridge to bore the operative treatment difficulty of tumor, radio-frequency ablation technique is applied in the treatment of ridge cone tumor by increasing scholar in recent years, and achieving good result, the minimally-invasive treatment for ridge cone tumor provides a new approach.
Radio-frequency ablation procedure is a kind of Non-vascularized iliac bone technology, radio-frequency electrode pin is inserted in tumor tissues by the guiding of various real-time imaging technology by it, radio-frequency electrode hair goes out high-frequency alternating current (350-500kHz), the ion concussion in surrounding them tumor tissues is made to produce frictional heat, cause electrode perimeter certain limit tumor tissues to produce hot injury and coagulation necrosis, reach the effect of killing off tumor cells.
Traditional ridge cone radio-frequency ablation procedure adopts single channel puncture technique, that is, use one-sided or bilateral radio-frequency electrode to carry out ablated tumor tissue.Owing to once can only insert a radio-frequency electrode, the ablation range of a radio-frequency electrode is limited, and for the vertebral tumor that volume is larger, be particularly positioned at Intrapyramidal large tumor, the ablation range of a radio-frequency electrode often can not cover whole tumor tissues.Meanwhile, percutaneous puncture is pedicle approach, and pedicle of vertebral arch is positioned at vertebral body trailing edge middle and upper part, and width is generally less, and radio-frequency electrode is difficult to change direction in pedicle of vertebral arch, not easily arrives the bottom of vertebral body.Therefore be difficult to accomplish once tumor whole in vertebral body all to be killed, needing punctures again or repeatedly changes direction to expand ablation range, so cause the risk that operating time increases, existence can omit some region tumors tissue, cause postoperative tumor to recur fast, affect the treatment; And repeatedly puncture is melted and has been increased the weight of injury to the human body of patient, makes patient more painful.
Therefore, a kind of radio-frequency electrode that can accurately lead placing direction, enable the disposable thecal puncture guide pin melted of whole Intrapyramidal whole tumor tissues be the emphasis that inventor pays close attention to.
Summary of the invention
The object of the invention is to, in order to solve above deficiency, provide a kind of thecal puncture guide pin, it accurately can control the placing direction of radio-frequency electrode, substantially reduces operating time, improves tumour ablation effect.
The technical scheme taked to realize the object of the invention is: a kind of thecal puncture guide pin, many the passages entered for radio-frequency electrode are provided with in described guide pin, the entrance point of described passage is positioned at the afterbody of guide pin, and the port of export of described passage is positioned at the head of guide pin; Described many passages comprise at least one parallel channels and some ramp ways, described parallel channels and ramp way are parallel to each other at entrance point, described parallel channels keeps parallel with entrance point at the port of export, described ramp way favours entrance point at the port of export, described ramp way tilts towards the same side at the port of export, and the angle of inclination of each ramp way is different.
Compared with prior art, beneficial effect of the present invention is:
Thecal puncture guide pin of the present invention is used in the puncture of minimal invasion vertebra radio-frequency (RF) ablation, and this guide pin is used for radio frequency electrode and leads, and makes radio-frequency electrode melt vertebral tumor by the puncture of way of escape percutaneous cervical arc root.
The placing direction of guide pin radio frequency electrode needle of the present invention accurately leads, by multichannel puncture needle, achieve the accurate ultrasonic puncture of spininess simultaneously and melt tumor of spine, radio-frequency electrode is made to arrive predetermined vertebral body position according to the angle direction of design, be evenly distributed on the diverse location of vertebral body, whole vertebral body structure can be covered comprehensively, disposablely melt whole Intrapyramidal whole tumor tissues, reach the effect that full vertebral tumor cell is killed, and substantially reduce operating time, decrease the misery of patient.
Preferably, described passage comprises first passage, second channel and third channel successively; Described first passage is parallel channels, and described second channel and third channel are ramp way; The port of export of described second channel and third channel bends to first passage direction and overlapping with the port of export of first passage.
Described first passage directly points to the upper district of vertebral body, for the radio-frequency electrode passed in first passage being directed to the region in district on vertebral body, melts the tumor cell in the upper district of vertebral body; Described second channel directly points to inferior segment before vertebral body, for the radio-frequency electrode passed in second channel being directed to the region of inferior segment before vertebral body, melts the tumor cell of inferior segment before vertebral body; Described third channel directly points to inferior segment after vertebral body, for the radio-frequency electrode passed in third channel being directed to the region of inferior segment after vertebral body, the tumor cell of inferior segment after vertebral body is melted, so, radio-frequency electrode can be distributed in the diverse location of vertebral body, comprehensively all eliminates Intrapyramidal tumor cell.
Preferably, have identical angle between adjacent two passages, the angular range of angle is 20 ° ~ 40 °.
So make radio-frequency electrode uniform in vertebral body, to cover Intrapyramidal whole tumor tissues; And in this angular range, the placing direction of guide pin energy radio frequency electrode is better located, and changes the direction of radio-frequency electrode easily, makes the direction of radio-frequency electrode reach expection, ensure the ablation effect to tumor cell.
Preferably, the length that described radio-frequency electrode is stretched out from the port of export of each passage is different, forms the polygon distributed areas being positioned at guide pin side between the protrude end of each radio-frequency electrode and guide pin head.
Preferably, the equal diameters of each passage in described guide pin, and diameter range is 1.5mm ~ 2.5mm.
Preferably, also comprise scale mark, described scale mark is arranged near the front end of described guide pin.
Preferably, described scale mark is 1/15 ~ 1/10 of guide pin total length to the distance of guide pin front end.
Preferably, described scale mark is 0.8mm ~ 1.2mm to the distance of guide pin front end.
When the head of guide pin is punctured into vertebral body, described scale mark contributes to the depth profile that user judges inserting needle, and operation is more easily manipulated.
Preferably, described each passage has different colors.
Different color channels guiding specifies the position in vertebral body different, make aligning and the distribution situation that more accurately and intuitively can find out radio-frequency electrode under the perspective monitoring of extraneous C arm machine, the tumor tissues being distributed in diverse location is all melted, further overcomes the difficulty of traditional treatment process.
Preferably, the afterbody of described guide pin has the card wing structure extended laterally.
Described card wing structure is used for being connected with extraneous positioner, the head of guide pin is entered after in vertebra, fixed by the afterbody of the card wing by guide pin, guide pin entirety is made to be in steady statue, make radio-frequency electrode pin arrive predetermined vertebral body position along channel direction accurately, further increase ablation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of thecal puncture guide pin of the present invention;
Fig. 2 is the dimension mark figure of thecal puncture guide pin of the present invention;
Fig. 3 is the corpus vertebrae structural representation divided;
Fig. 4 is the structural representation after guide pin of the present invention puncture vertebral body;
Fig. 5 is the operation chart passing into radio-frequency electrode in guide pin of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Shown in accompanying drawing 1 to accompanying drawing 5, a kind of thecal puncture guide pin, is provided with many passages entered for radio-frequency electrode 3 in described guide pin 1.The entrance point of described passage is positioned at the afterbody of guide pin 1, and the port of export of described passage is positioned at the head of guide pin 1.Described many passages comprise at least one parallel channels and some ramp ways, described parallel channels and ramp way are parallel to each other at entrance point, described parallel channels keeps parallel with entrance point at the port of export, described ramp way favours entrance point at the port of export, described ramp way is in the port of export bending inclination towards the same side, and the angle of inclination of each ramp way is different.
In the present embodiment, described passage is three, is namely followed successively by first passage 13, second channel 12 and third channel 11, and described first passage 13 is red channel, and described second channel 12 is blue channel, and described third channel 11 is brown passage.The channel diameter of first passage, second channel and third channel is equal, and the preferable range of diameter is 1.5mm ~ 2.5mm, gets optimum diameter 2mm in the present embodiment, and namely the overall width of guide pin is 6mm.
First passage 13 is parallel channels, second channel 12 and third channel 11 are ramp way, three-aisled entrance point is parallel to each other, the port of export of second channel 12 and third channel 11 tilts towards first passage 13 curving, second channel 12, third channel 11 and the port of export of first passage 13 are overlapping to be extended straight separately afterwards, and overlapping place is 1a.Wherein the curvature of third channel knee is greater than the curvature of second channel knee.The extension line of the third channel port of export points to 3rd district of vertebral body structure, the region place namely under vertebral body trailing edge and vertebral body between soleplate.The extension line of the second channel port of export points to 2nd district of vertebral body structure, the region place namely under anterior margin of vertebral body and vertebral body between soleplate.
The first angle is formed as between the tilting section of second channel 12 port of export and first passage 13, tilting section and second channel 12 tilting section of third channel 11 port of export are formed as the second angle, first angle is equal with the second angle, the scope of described angle is 20 ° ~ 40 °, in the present embodiment, optimum angle value 30 ° is got, under this angle, radio-frequency electrode coverage is more extensive, and ablation effect is better.The length that radio-frequency electrode is stretched out from the port of export of each passage is different, forms the polygon distributed areas being positioned at guide pin side between the protrude end of each radio-frequency electrode and guide pin head.
Also comprise the scale mark being located at guide pin 1 head, better can be had an X-rayed by extraneous C arm machine when puncturing and guarantee the degree of depth that guide pin thrusts, described scale mark is 1/15 ~ 1/10 of guide pin total length to the distance of guide pin head port foremost, or described scale mark is 0.8mm ~ 1.2mm to the distance of guide pin head port foremost.The length of the guide pin of the present embodiment is 15cm, and puncture needle scale mark placed-depth is 1cm.
When being had an X-rayed by C arm machine, when perspective is 1cm to the degree of depth that guide pin head enters, when namely depth of needle arrives scale mark, just stops the puncture of guide pin, guide pin is fixed.
The card wing 1b of triangle is also provided with in the two sides of tail of guide pin 1, card wing 1b mates with extraneous positioner, for after guide pin head inserts vertebral body, be fixed by the afterbody of screens by guide pin, guide pin entirety is made to be in steady statue, guarantee that radio-frequency electrode arrives precalculated position by passage, improve ablation effect.
Radio frequency electrode placing direction of the present invention is used to carry out leading as follows with the concrete steps of ablated tumor cell on a large scale:
1) dotted line is done at the vertebral body center crossing human body, vertebral body is divided into three regions: district on 1 district-vertebral body; Inferior segment before 2 districts-vertebral body; Inferior segment after 3 districts-vertebral body.
2) conventional Percutaneous Techniques is adopted, percutaneous puncture finds and locates the puncture entry point of pedicle of vertebral arch, under extraneous C arm machine perspective, pedicle slowly inserts triple channel guide pin, keep the major axis of guide pin and the upper soleplate level of vertebral body, it is 1cm that the head of fluoroscopy during operation determination guide pin penetrates the vertebral body degree of depth, piercing process makes puncture needle and vertebral body upper soleplate keeping parallelism, then fixed guide pin as far as possible.
3) after fixed guide pin, insert radio-frequency electrode 3 along the respective channel on guide pin, use C arm machine to have an X-rayed in art and determine radio-frequency electrode 3 placed-depth, guarantee that each electrode all arrives appointed area, ablation range can comprise whole vertebral body.Whole operating process is complete.
Channel outlet in guide pin of the present invention bends, curved channel makes the placing direction of radio-frequency electrode be able to accurate control, guarantee that electrode arrives appointed area like clockwork, once can realize many radio-frequency electrodes to melt simultaneously, be evenly distributed on the diverse location of vertebral body, ablation range is large, and radio-frequency (RF) ablation scope can comprise whole vertebral body, realizes full vertebral body and melts.The present invention substantially reduces operating time, improves ablation effect.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to detailed description of the invention disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this description, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (10)
1. a thecal puncture guide pin, is characterized in that, be provided with many passages entered for radio-frequency electrode in described guide pin, the entrance point of described passage is positioned at the afterbody of guide pin, and the port of export of described passage is positioned at the head of guide pin; Described many passages comprise at least one parallel channels and some ramp ways, described parallel channels and ramp way are parallel to each other at entrance point, described parallel channels keeps parallel with entrance point at the port of export, described ramp way favours entrance point at the port of export, and described ramp way tilts towards the same side at the port of export, the angle of inclination of each ramp way is different.
2. guide pin according to claim 1, is characterized in that, described passage comprises first passage, second channel and third channel successively; Described first passage is parallel channels, and described second channel and third channel are ramp way; The port of export of described second channel and third channel bends to first passage direction and overlapping with the port of export of first passage.
3. guide pin according to claim 1 and 2, is characterized in that, has identical angle between adjacent two passages, and the angular range of angle is 20 ° ~ 40 °.
4. guide pin according to claim 1 and 2, is characterized in that, the length that described radio-frequency electrode is stretched out from the port of export of each passage is different, forms the polygon distributed areas being positioned at guide pin side between the protrude end of each radio-frequency electrode and guide pin head.
5. guide pin according to claim 1, is characterized in that, the equal diameters of each passage in described guide pin, and diameter range is 1.5mm ~ 2.5mm.
6. guide pin according to claim 1, is characterized in that, also comprises scale mark, and described scale mark is arranged near the front end of described guide pin.
7. guide pin according to claim 6, is characterized in that, described scale mark is 1/15 ~ 1/10 of guide pin total length to the distance of guide pin front end.
8. guide pin according to claim 6, is characterized in that, described scale mark is 0.8mm ~ 1.2mm to the distance of guide pin front end.
9. guide pin according to claim 1 and 2, is characterized in that, described each passage has different colors.
10. guide pin according to claim 1, is characterized in that, the afterbody of described guide pin has the card wing structure extended laterally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047059.0A CN104586502B (en) | 2015-01-29 | 2015-01-29 | A kind of thecal puncture guide pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047059.0A CN104586502B (en) | 2015-01-29 | 2015-01-29 | A kind of thecal puncture guide pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104586502A true CN104586502A (en) | 2015-05-06 |
| CN104586502B CN104586502B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510047059.0A Expired - Fee Related CN104586502B (en) | 2015-01-29 | 2015-01-29 | A kind of thecal puncture guide pin |
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| WO1993025136A2 (en) * | 1992-06-05 | 1993-12-23 | Chin Albert K | Method and apparatus for prostatic treatment |
| EP0957988B1 (en) * | 1995-08-15 | 2004-12-15 | Rita Medical Systems, Inc. | Apparatus for ablation of a selected mass |
| EP0998235B1 (en) * | 1997-07-25 | 2004-11-24 | Sherwood Services AG | Cluster ablation electrode system |
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| Publication number | Publication date |
|---|---|
| CN104586502B (en) | 2017-06-16 |
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