CN109029212B - Probe positioning and needle spacing measuring device for percutaneous ablation - Google Patents
Probe positioning and needle spacing measuring device for percutaneous ablation Download PDFInfo
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- CN109029212B CN109029212B CN201810885032.2A CN201810885032A CN109029212B CN 109029212 B CN109029212 B CN 109029212B CN 201810885032 A CN201810885032 A CN 201810885032A CN 109029212 B CN109029212 B CN 109029212B
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Abstract
The application relates to a probe positioning and needle spacing measuring device used in percutaneous ablation, comprising: a center positioning disk; the first annular disc is concentrically sleeved on the periphery of the central positioning disc at intervals and matched with the central positioning disc to form a first annular track; the at least two first positioning rings are movably arranged in the first annular track and can centripetally rotate around the central positioning disk; and the first inner ruler is concentric and is arranged on the central positioning disc in a stacked manner, and is provided with a first internal positioning mark and at least two first internal digital marks which are circumferentially arranged at intervals with the first internal positioning mark. The device can assist in positioning the puncture positions of a plurality of ablation probes in advance, ensures the puncture accuracy of the ablation probes, realizes body surface fixation of the ablation probes after the puncture is finished, and prevents the occurrence probability of complications caused by accidental movement of the ablation probes from being increased, thereby influencing the occurrence of the problems of safety and postoperative effect in operation.
Description
Technical Field
The application relates to the technical field of percutaneous tumor ablation, in particular to a probe positioning and needle spacing measuring device used in percutaneous ablation.
Background
An ablation plan is established before percutaneous ablation treatment, and the ablation volume, the probe placement positions and the number are estimated mainly by using on-board software. For either thermal or cold ablation, the probe configuration determines the ablation area and extent, which determines the effectiveness of the treatment.
However, in the percutaneous ablation process, the probe needs to be subjected to position adjustment for many times under the guidance of CT, so that the positioning operation is difficult and the accuracy is not easy to control. In addition, in the process, the movement of the ablation probe is caused by the respiration of a patient, the positioning of the CT scanning ablation probe and the output of high-voltage current, and the unexpected movement in the operation is very likely to cause the ablation probe to be inserted into the damage of the peripheral large blood vessel, the nerve or other organs of the tumor; furthermore, the traditional puncture operation is a single needle operation, the needle insertion positioning time is too long, the occurrence probability of complications can be increased, and the safety and the postoperative effect in the operation are affected.
Disclosure of Invention
Based on this, it is necessary to provide a probe location and needle interval measuring device for among percutaneous ablation, can carry out assistance-localization to the puncture position of a plurality of ablation probes that need use in advance, ensure the puncture accuracy of ablation probe, promote the efficiency of puncture operation, realize body surface fixation to the ablation probe after the puncture is accomplished simultaneously, prevent that the unexpected removal of ablation probe from leading to the complication probability increase of occurrence, influence the problem emergence of security and postoperative effect in the art.
The technical scheme is as follows:
a probe positioning and needle spacing measurement device for use in percutaneous ablation procedures, comprising:
a center positioning disk;
the first annular discs are concentrically sleeved on the periphery of the central positioning disc at intervals and are matched with each other to form a first annular track;
the at least two first positioning rings are movably arranged in the first annular track and can centripetally rotate around the central positioning disk; and
The first inner ruler is concentrically and overlapped on the central positioning disc, and is provided with a first positioning mark and at least two first inner digital marks which are circumferentially arranged at intervals with the first positioning mark; wherein at least two of said first internal numerical designations refer to different needle pitch sizes.
The device is mainly used for positioning and fixing the ablation probe in percutaneous tumor ablation operation and measuring the distance between the ablation probes. When the method is specifically used, firstly, the needle inserting position of an ablation probe and the interval value between the ablation probes which are required to be used are estimated in advance according to an ablation plan; then, one of the first positioning rings is centripetally rotated around the central positioning disk along the first annular track, and finally stopped at a position opposite to the first positioning mark of the first inner ruler, so that the position of the first positioning ring serving as a contact pin of the first ablation probe can be determined; and then, the needle spacing value determined by the previous array plan is subjected to centripetal rotation on at least one other first positioning ring positioned in the first annular track around the central positioning disk and stopped at a first inner digital mark corresponding to the first inner ruler, so that the position of the contact pin of the second ablation probe can be determined, and the like. After the positions of the first positioning rings, corresponding to the number of the ablation probes to be used, are adjusted, the device can be integrally placed on the skin surface of the operation area of a patient, and the ablation probes can be sequentially inserted into the body through the first positioning rings which are adjusted in advance to perform an operation. Compared with the prior art, the device can assist in positioning the puncture positions of a plurality of ablation probes required to be used in advance, ensures the puncture accuracy of the ablation probes, improves the efficiency of puncture operation, realizes body surface fixation of the ablation probes after the puncture is finished, prevents the increase of the occurrence probability of complications caused by accidental movement of the ablation probes, and influences the occurrence of the problems of safety and postoperative effect in operation.
The technical scheme of the application is further described as follows:
in one embodiment, the outer peripheral edge of the first inner scale coincides with the outer peripheral edge of the centering disc.
In one embodiment, at least two first inner digital marks are identical in size and form a first interval mark group, and the two first inner digital marks of the first interval mark group are equidistantly arranged on two sides of the first inner positioning mark.
In one embodiment, the device further comprises a first outer ruler, a second inner ruler, a second annular disc and at least two second positioning rings, wherein the second annular disc is concentrically sleeved on the periphery of the first annular disc at intervals and matched with the first annular disc to form a second annular track, the first outer ruler and the second inner ruler are concentrically overlapped on the same surface of the first annular disc from inside to outside, and the at least two second positioning rings can be movably arranged in the second annular track and can centripetally rotate around the central positioning disc; the first outer ruler and the second inner ruler are respectively provided with a second inner positioning mark and at least two second inner digital marks which are circumferentially arranged at intervals with the second inner positioning marks; wherein at least two of said second internal numerical designations refer to different needle pitch sizes.
In one embodiment, the inner peripheral edge of the first outer ruler coincides with the inner peripheral edge of the first annular disk and the outer peripheral edge of the second inner ruler coincides with the outer peripheral edge of the first annular disk.
In one embodiment, at least two of the second inner digital marks have the same needle pitch, and form a second pitch mark group, and the two second inner digital marks of the second pitch mark group are equidistantly arranged on two sides of the second inner positioning mark.
In one embodiment, the device further comprises a third annular disc, a second outer ruler, a third inner ruler and at least two third positioning rings, wherein the third annular disc is concentrically sleeved on the periphery of the second annular disc at intervals and matched with the second annular disc to form a third annular track, the second outer ruler and the third inner ruler are concentrically overlapped on the same surface of the second annular disc from inside to outside, and the at least two third positioning rings are movably arranged in the third annular track and can centripetally rotate around the central positioning disc; the second outer ruler and the third inner ruler are respectively provided with a third inner positioning mark and at least two third inner digital marks which are circumferentially arranged at intervals with the third inner positioning marks; wherein at least two of said third inner numerical designations refer to different needle pitch sizes.
In one embodiment, the inner peripheral edge of the second outer ruler coincides with the inner peripheral edge of the second annular disk and the outer peripheral edge of the third inner ruler coincides with the outer peripheral edge of the second annular disk.
In one embodiment, at least two of the third inner digital marks have the same needle pitch, and form a third pitch mark group, and the two third inner digital marks of the third pitch mark group are equidistantly arranged on two sides of the third inner positioning mark.
In one embodiment, the first, second and third locating rings each comprise a shaft tube, a needle access face wheel disposed at a first end of the shaft tube, and a cover face wheel disposed at a second end of the shaft tube; the shaft tube is a hollow tubular piece which penetrates axially, and the cavity is used for accommodating the ablation probe; the needle inlet surface wheel part and the covering surface wheel part are both protruded out of the outer surface of the shaft tube and are matched at intervals to form a positioning clamping groove, and the positioning clamping groove clamps and fixes the first inner ruler, the first outer ruler, the second inner ruler, the second outer ruler and the third inner ruler.
Drawings
Fig. 1 is a schematic structural view of a probe positioning and needle spacing measuring device for percutaneous ablation according to an embodiment of the present application.
Reference numerals illustrate:
10. the central positioning disc, 20, the first annular disc, 30, the first annular track, 40, the first positioning ring, 50, the first inner ruler, 51, the first inner positioning mark, 52, the first inner digital mark, 60, the first outer ruler, 61, the first outer positioning mark, 62, the first outer digital mark, 70, the second inner ruler, 71, the second inner positioning mark, 72, the second inner digital mark, 80, the second annular disc, 90, the second positioning ring, 100, the second annular track, 110, the third annular disc, 120, the second outer ruler, 121, the second outer positioning mark, 122, the second outer digital mark, 130, the third inner ruler, 131, the third inner positioning mark, 132, the third inner digital mark, 140, the third positioning ring, 150 and the third annular track.
Detailed Description
The present application will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted," "disposed," or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the specific manner in which one element is fixedly connected to another element may be achieved by the prior art, and is not described in detail herein, and a threaded connection is preferably used.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
The conventional ablations at present comprise cryoablation, radiofrequency ablation, irreversible electroporation ablation, microwave ablation and the like, and the range of the ablations is required to be enlarged by combining multiple needles.
Before treatment, an ablation plan is firstly required to be made, specifically, tumor positioning is firstly carried out through CT or MRI, the size of a target tumor is calculated, the tumor ablation range is calculated according to the size of the tumor, then the required number of probes is evaluated, and finally the placement position of each probe is determined. Tumor ablation is realized by selecting the number of ablation needles and a certain needle distribution method. For thermal or cold ablation, the probe configuration determines the ablation area and extent, which determines the effectiveness of the treatment.
However, according to the operation requirement, the distance between two adjacent ablation probes in the treatment operation is generally controlled to be between 1.0cm and 4.0cm, so as to avoid residual focus or influence on the treatment effect due to voltage abnormality, and the random movement of the ablation probes after the needle penetration can cause potential damage to the patient body, so that the position fixing of the ablation probes in the operation and the measurement of the needle distance are controlled to be an important factor for determining the operation effect.
Based on this, as shown in fig. 1, a probe positioning and needle pitch measuring device for percutaneous ablation according to an embodiment of the present application includes: a center positioning plate 10; the first annular disc 20 is concentrically and alternately sleeved on the periphery of the central positioning disc 10, and is matched with the first annular disc 20 to form a first annular track 30; at least two first positioning rings 40, at least two first positioning rings 40 are movably arranged in the first annular track 30 and can centripetally rotate around the central positioning disk 10; the first inner ruler 50 is concentrically and stacked on the central positioning disk 10, and a first positioning mark 51 and at least two first inner digital marks 52 circumferentially spaced from the first positioning mark 51 are arranged on the first inner ruler 50; wherein at least two of said first internal numerical identifiers 52 refer to different needle pitch sizes.
The device is mainly used for positioning and fixing the ablation probe in percutaneous tumor ablation operation and measuring the distance between the ablation probes. When the method is specifically used, firstly, the needle inserting position of an ablation probe and the interval value between the ablation probes which are required to be used are estimated in advance according to an ablation plan; next, one of the first positioning rings 40 is centripetally rotated around the central positioning disk 10 along the first annular track 30, and finally stopped at a position opposite to the first positioning mark 51 of the first inner ruler 50, so that the position of the first positioning ring 40 serving as the contact pin of the first ablation probe can be determined; the needle pitch value determined by the previous deployment plan is then used to centripetally rotate at least one other first locating ring 40 located in the first annular track 30 about the central locating disk 10 and stop at the corresponding first inner digital mark 52 of the first inner ruler 50, thereby determining the needle position of the second ablation probe, and so on. After the positions of the first positioning rings 40 corresponding to the number of the ablation probes to be used are adjusted, the device can be integrally placed on the skin surface of the operation area of the patient, and the ablation probes can be sequentially inserted into the body through the first positioning rings 40 which are adjusted in advance to perform the operation. Compared with the prior art, the device can assist in positioning the puncture positions of a plurality of ablation probes required to be used in advance, ensures the puncture accuracy of the ablation probes, improves the efficiency of puncture operation, realizes body surface fixation of the ablation probes after the puncture is finished, prevents the increase of the occurrence probability of complications caused by accidental movement of the ablation probes, and influences the occurrence of the problems of safety and postoperative effect in operation.
It will be appreciated that the pre-operative needle placement plan determines that two ablation probes are required and that the needle spacing value of the two ablation probes is controlled to be 1cm. The first internal positioning mark 51 and the first internal digital mark 52 are preset on the surface of the first internal ruler 50 by printing, pasting, etc., the first internal digital mark 52 can be displayed with the numbers "1,2, etc., and for distinguishing, the first internal positioning mark 51 adopts a solid black triangle shape, and the first internal digital mark 52 adopts a hollow triangle shape. At this time, two first positioning rings 40 are installed in the first annular track 30, one of the positioning rings is rotated to align with the first positioning mark 51, and then the other first positioning ring 40 is rotated to align with the first positioning mark 51 with the number "1", so that the distance between the two ablation probes to be inserted can be determined to be 1cm.
It should be noted that, the meaning of "centripetal rotation" in the above description is understood as: the first positioning ring 40 rotates 360 degrees around its own center in addition to revolving around the center positioning disk 10 along the first annular orbit 30.
On the basis of the above embodiment, the outer peripheral edge of the first inner scale 50 coincides with the outer peripheral edge of the center positioning disk 10. At this time, the outer peripheral edges of the first inner ruler 50 and the central positioning disk 10 can tightly abut against the first positioning ring 40, so that the first inner ruler 50 can be stably mounted on the surface of the central positioning disk 10 without being displaced along the radial direction under the limiting action of the first positioning ring 40, and the positioning accuracy of the ablation probe is affected.
Further, at least two first inner digital marks 52 are arranged on two sides of the first inner positioning mark 51 at equal intervals, wherein the first inner digital marks 52 correspond to the same needle pitch and form a first pitch mark group. Namely, the first internal digital mark 52 representing different needle spacing values in a symmetrical relation is set in both clockwise and anticlockwise directions with the first internal positioning mark 51 as a starting point, when positioning and measuring the ablation probe, the first positioning ring 40 can be allowed to rotate around any direction, the flexibility of the device is improved, and the first positioning ring 40 can stop on the skin surface of a larger area of operation area due to the rotation around both clockwise and anticlockwise directions, so that the positioning and needle spacing measuring capability can be greatly improved.
With continued reference to fig. 1, in addition, in order to further enhance the usability, in an alternative embodiment, the device (hereinafter referred to as a "probe positioning and needle distance measuring device for percutaneous ablation" and the like) further includes a first outer ruler 60, a second inner ruler 70, a second annular disk 80, and at least two second positioning rings 90, where the second annular disk 80 is concentrically and spaced around the first annular disk 20 and is matched to form a second annular track 100, the first outer ruler 60 and the second inner ruler 70 are concentrically stacked on the same surface of the first annular disk 20 from inside to outside, and at least two second positioning rings 90 are movably disposed in the second annular track 100 and can centripetally rotate around the central positioning disk 10; the first outer ruler 60 is provided with a first outer positioning mark 61 and at least two first outer digital marks 62 which are circumferentially arranged at intervals with the first outer positioning mark 61 and are used for measuring the spacing between positioning rings on the tracks on two sides of the annular disc with the same name; wherein at least two of said first outer digital identifications 62 refer to different needle pitch sizes. The second inner ruler is provided with a second positioning mark 71 and at least two second inner digital marks 72 which are circumferentially spaced from the second positioning mark 71 and are used for measuring the distance between two positioning rings on the same-name track; wherein at least two of said first outer digital indicia 62 or said second inner digital indicia 72 refer to different needle pitch sizes. In this way, the second positioning ring 90 can centripetally rotate around the central positioning disk 10 according to a preset path through the second annular track 100 formed by the first annular disk 20 and the second annular disk 80 which are arranged at intervals, so that the movement accuracy is ensured to be controllable.
When two positioning rings in the same track are positioned on the second annular track, one of the second positioning rings 90 is centripetally rotated around the central positioning disk 10 along the second annular track 100, and stops at the position opposite to the second positioning mark 71 of the second inner ruler 70, so that the position of the second positioning ring 90, which is the contact pin of the first ablation probe, can be determined; then, the needle pitch value determined by the previous array plan is further used for centripetally rotating at least one other second positioning ring 90 positioned in the second annular track 100 around the central positioning disk 10 and stopping to the position of the first second inner digital mark 72 corresponding to the second inner ruler 70, so that the needle position of the second ablation probe can be determined, and the like. After all the second positioning rings 90 are adjusted, the device can be transferred to the skin surface of the operation area of the patient for performing the operation of puncturing the needle. Because the position of the second positioning ring 90 can fix the ablation probes, and the needle distance between two adjacent ablation probes can be predetermined through the second positioning ring 90, more accurate body surface positioning assistance can be provided for needle insertion in the ablation process, so that the actual needle insertion can be highly matched with a needle distribution plan, and the negative influence caused by deviation operation effect is eliminated.
On the basis of the above embodiment, the inner peripheral edge of the first outer ruler 60 coincides with the inner peripheral edge of the first annular disk 20, and the outer peripheral edge of the second inner ruler 70 coincides with the outer peripheral edge of the first annular disk 20. The first outer ruler 60 can be fixed by buckling the first positioning ring 40, so that the first outer ruler is prevented from loosening or unexpected dislocation; the second inner ruler 70 can be firmly buckled on the first annular disk 20 through the second locating ring 90, and can be only attached to the first annular disk 20, so that the assembly reliability is improved.
Further, at least two first outer digital marks 62 are arranged on two sides of the first outer positioning mark 61 at equal intervals, wherein the first outer distance marks are formed by the same needle distance corresponding to the first outer digital marks 62. The second inner digital marks 72 have the same needle pitch and form a second inner pitch mark group, and the two second inner digital marks 72 of the second inner pitch mark group are equidistantly arranged on two sides of the second inner positioning mark 71. Namely, a first external digital mark 62 which represents different needle pitch values and has a symmetrical relation is arranged in both the clockwise direction and the anticlockwise direction by taking the first external positioning mark 61 as a starting point; the second internal position mark 71 is used as a starting point, and second internal digital marks 72 representing different values of the needle pitch are arranged in a symmetrical relation in both the clockwise direction and the anticlockwise direction. When the ablation probe is positioned and measured, the first positioning ring 40 and the second positioning ring 90 can be allowed to rotate around any direction, so that the use flexibility of the device is improved, and the second positioning ring 90 can stop on the skin surface of a larger area of operation area due to the rotation around the forward direction and the reverse direction, and the positioning and needle spacing measuring capability can be greatly improved.
With continued reference to fig. 1, in addition to any of the foregoing embodiments, the apparatus further includes a third annular disc 110, a second outer ruler 120, a third inner ruler 130, and at least two third positioning rings 140, where the third annular disc 110 is concentrically and spacedly sleeved on the outer periphery of the second annular disc 80 and is matched to form a third annular track 150, the second outer ruler 120 and the third inner ruler 130 are concentrically stacked on the same surface of the second annular disc 80 from inside to outside, and at least two third positioning rings 140 are movably disposed in the third annular track 150 and can perform a centripetal rotation around the central positioning disc 10; the second outer ruler 120 is provided with a second outer positioning mark 121 and at least two second outer digital marks 122 circumferentially spaced from the second outer positioning mark 121; wherein at least two of said second external numerical identifiers 122 refer to different needle pitch sizes. The third inner ruler 130 is provided with a third positioning mark 131 and at least two third inner digital marks 132 circumferentially spaced from the third positioning mark 131; wherein at least two of said second outer numerical indicia 122 or third inner numerical indicia 132 refer to different needle pitch sizes.
Further, the inner peripheral edge of the second outer ruler 120 coincides with the inner peripheral edge of the second annular disk 80, and the outer peripheral edge of the third inner ruler 130 coincides with the outer peripheral edge of the second annular disk 80. As such, the second outer ruler 120 can be fixed by the second positioning ring 90, and the third inner ruler 130 can be fixed by the third positioning ring 140.
Further, at least two of the second external digital marks 122 have the same needle pitch and form a second external pitch mark group, and the two second external digital marks 122 of the second external pitch mark group are equidistantly arranged on two sides of the second external positioning mark 121; and at least two of the third inner digital marks 132 have the same needle pitch, and form a third inner pitch mark group, and the two third inner digital marks 132 of the third inner pitch mark group are equidistantly arranged on two sides of the third inner positioning mark 131.
It should be noted that the usage of the second outer ruler 120, the third inner ruler 130, the third annular disc 110 and the third positioning ring 140 and the obtained advantages can be understood by referring to the first outer ruler 60, the second inner ruler 70, the second annular disc 80 and at least two of the second positioning rings 90, and will not be described herein.
The first positioning ring 40, the second positioning ring 90 and the third positioning ring 140 each comprise a shaft tube, a needle-feeding surface wheel disposed at a first end of the shaft tube, and a cover surface wheel disposed at a second end of the shaft tube; the shaft tube is a hollow tubular member that is axially penetrated, wherein the cavity is for receiving an ablation probe. The inner diameter of the shaft tube is larger than or equal to the diameter of the ablation probe, so that the ablation probe can be ensured to be firmly inserted into the shaft tube and cannot easily fall out.
The needle-inserting surface wheel part and the covering surface wheel part are protruded out of the outer surface of the shaft tube and are matched at intervals to form a positioning clamping groove, and the positioning clamping groove clamps and fixes the first inner ruler 50, the first outer ruler 60, the second inner ruler 70, the second outer ruler 120 and the third inner ruler 130. The width of the positioning clip groove is larger than the thicknesses of the center positioning disk 10, the first annular disk 20, the second annular disk 80, and the third annular disk 110, so that a clip gap can be reserved for clipping and fixing the first inner scale 50, the second inner scale 70, and the like.
The center positioning disk 10 was a thin-walled circular member having a thickness of 2.5mm and a diameter of 2cm. The first annular disk 20, the second annular disk 80 and the third annular disk 110 are thin-walled annular pieces having a thickness of 2.5mm, wherein the first annular disk 20 has an inner diameter of 2.5cm and an outer diameter of 4cm; the second annular disk 80 has an inner diameter of 4.5cm and an outer diameter of 6cm; the third annular disk 110 has an inner diameter of 6.5cm and an outer diameter of 8cm. The first annular disk 20, the second annular disk 80, and the third annular disk 110 are sequentially sleeved with the rotation center of the centering disk 10. The central positioning disk 10 and the first annular disk 20 form a first annular track 30 in a circumferential gap, the first annular disk 20 and the second annular disk 80 form a second annular track 100 in a circumferential gap, the second annular disk 80 and the third annular disk 110 form a third annular track 150 in a circumferential gap, and the central positioning disk 10 is used as a center to sequentially sleeve the first annular track 30, the second annular track 100 and the third annular track 150 from inside to outside. The first endless track 30 is an inner track of the second endless track 100. The second circular track 100 is an inner track of the third circular track 150. The second endless track 100 is an outer track of the first endless track 30. The third circular track 150 is an outer track of the second circular track 100.
The first inner ruler 50 is a transparent thin-walled annular piece with the thickness of 0.2cm, the inner diameter of 1.4cm and the outer diameter of 2.0. The first outer ruler 60, the second inner ruler 70, the second outer ruler 120 and the third inner ruler 130 are all transparent thin-wall annular pieces with the thickness of 0.2 cm. The first outer ruler 60 has an inner diameter of 2.5cm and an outer diameter of 3.1cm; the second inner scale 70 has an inner diameter of 3.4cm and an outer diameter of 4.0cm, the second outer scale 120 has an inner diameter of 4.5cm and an outer diameter of 5.1cm, and the third inner scale 130 has an inner diameter of 5.4cm and an outer diameter of 6.0cm.
Furthermore, it is contemplated that the present device is directly applied to the skin of the patient, and that the center-positioning plate 10, the first annular plate 20, the second annular plate 80, and the third annular plate 110 are made of a transparent, non-toxic, odorless, rigid polyvinyl chloride material in order to avoid causing infections while avoiding excessive weight being borne by the patient. The first inner scale 50, the first outer scale 60, the second inner scale 70, the second outer scale 120, and the third inner scale 130 are made of translucent frosted, nontoxic, odorless, and rigid polyvinyl chloride materials. The shaft tube, the needle-inserting surface wheel and the covering surface wheel are made of opaque, nontoxic and odorless hard polyvinyl chloride materials.
In summary, the device according to the present technical solution may perform positioning and needle pitch determination of an ablation probe in the same orbit according to actual needs, or perform positioning and needle pitch determination of an ablation probe in a cross orbit, and the specific solution may be summarized as follows:
1. and (5) positioning the same rail and measuring the needle spacing. The first positioning ring in any track is selected as the position of the head ablation probe pin. And rotating the inner ruler with the same name of the selected track to align the positioning mark (0 scale) of the inner ruler with the first positioning ring. And then determining the needle distance according to a needle distribution plan, and then moving the rest positioning rings in the same track to corresponding digital marks ("1, 2.+ -." scales ") on an inner ruler, namely the second and third...times of needle insertion point positions.
2. Positioning across the track and needle pitch measurement. And defining any positioning ring in the inner tracks of the two adjacent tracks as the position of the head ablation probe pin. Rotating the outer ruler with the same name as the track to enable the positioning mark '0' scale of the outer ruler to be aligned with the first positioning ring). And then determining the needle distance according to the needle distribution plan, and then moving the rest positioning rings in the outer track to corresponding digital marks (' 1,2. ' scales ') on the outer ruler, namely the second and third.
3. After the positioning ring adjustment is completed according to the preoperative ablation plan, an identification tag is attached. However, the device is placed on the skin surface of the operation area of a patient, and an ablation probe is sequentially inserted into the body through a selected positioning ring; if necessary, the needle body is guided by the image as an auxiliary positioning in the patient.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A probe positioning and needle spacing measurement device for use in percutaneous ablation procedures, comprising:
a center positioning disk;
the first annular discs are concentrically sleeved on the periphery of the central positioning disc at intervals and are matched with each other to form a first annular track;
the at least two first positioning rings are movably arranged in the first annular track and can centripetally rotate around the central positioning disk; and
The first inner ruler is concentrically and overlapped on the central positioning disc, and is provided with a first positioning mark and at least two first inner digital marks which are circumferentially arranged at intervals with the first positioning mark; wherein at least two of said first inner digital identifiers refer to different pin spacing magnitudes;
the first internal positioning mark adopts a solid black triangle shape, and the first internal digital mark adopts a hollow triangle shape;
the first outer ruler and the second inner ruler are concentrically overlapped on the same surface of the first annular disc from inside to outside, and at least two second positioning rings are movably arranged in the second annular track and can centripetally rotate around the central positioning disc; the first outer ruler is provided with a first outer positioning mark and at least two first outer digital marks arranged at intervals in the circumferential direction of the first outer positioning mark, and the second inner ruler is provided with a second inner positioning mark and at least two second inner digital marks arranged at intervals in the circumferential direction of the second inner positioning mark; wherein at least two of the first outer numerical indicia or the second inner numerical indicia refer to different pin spacing sizes.
2. The probe positioning and needle spacing measurement device for use in percutaneous ablation according to claim 1, wherein the peripheral edge of the first inner ruler coincides with the peripheral edge of the central positioning disk.
3. The probe positioning and needle spacing measuring device for percutaneous ablation according to claim 1, wherein at least two first inner digital marks are identical in size and form a first spacing mark group, and the two first inner digital marks of the first spacing mark group are equidistantly arranged on two sides of the first positioning mark.
4. A probe positioning and needle spacing measurement device for use in percutaneous ablation according to claim 2 or 3, wherein the inner peripheral edge of the first outer ruler coincides with the inner peripheral edge of the first annular disc and the outer peripheral edge of the second inner ruler coincides with the outer peripheral edge of the first annular disc.
5. The probe positioning and needle spacing measuring device for percutaneous ablation according to claim 4, wherein at least two of the first outer digital marks correspond to the same needle spacing and form a first outer spacing mark group for measuring the distance between positioning rings on tracks on two sides of the same-name annular disc, and the two first outer digital marks of the first outer spacing mark group are equidistantly arranged on two sides of the first outer positioning mark; and at least two inner digital marks corresponding to the second inner digital marks are identical in needle spacing and form a second inner spacing mark group, the second inner spacing mark group is used for measuring the distance between positioning rings on tracks on two sides of the same-name annular disc, and the two second inner digital marks of the second inner spacing mark group are equidistantly distributed on two sides of the second inner positioning marks.
6. The probe positioning and needle spacing measuring device for percutaneous ablation according to claim 4, further comprising a third annular disk, a second outer ruler, a third inner ruler and at least two third positioning rings, wherein the third annular disk is concentrically and alternately sleeved on the periphery of the second annular disk and matched with the second annular disk to form a third annular track, the second outer ruler and the third inner ruler are concentrically overlapped on the same surface of the second annular disk from inside to outside, and the at least two third positioning rings are movably arranged in the third annular track and can centripetally rotate around the central positioning disk; the second outer ruler is provided with a second outer positioning mark and at least two second outer digital marks arranged at intervals along the circumferential direction of the second outer positioning mark, and the third inner ruler is provided with a third inner positioning mark and at least two third inner digital marks arranged at intervals along the circumferential direction of the third inner positioning mark; wherein at least two of the second outer numerical indicia or the third inner numerical indicia refer to different pin space sizes.
7. The probe positioning and needle spacing measurement device for use in percutaneous ablation according to claim 6, wherein an inner peripheral edge of the second outer ruler coincides with an inner peripheral edge of the second annular disk and an outer peripheral edge of the third inner ruler coincides with an outer peripheral edge of the second annular disk.
8. The probe positioning and needle spacing measuring device for percutaneous ablation according to claim 6, wherein at least two of the second outer digital marks have the same needle spacing and form a second outer spacing mark group for measuring the distance between positioning rings on the tracks on two sides of the same-name annular disc, and the two second outer digital marks of the second outer spacing mark group are equidistantly arranged on two sides of the second inner positioning mark; and at least two of the third inner digital marks are identical in size and form a third inner space mark group, the third inner space mark group is used for measuring the distance between two positioning rings on the same-name track, and the two third inner digital marks of the third inner space mark group are equidistantly distributed on two sides of the third inner positioning mark.
9. The probe positioning and needle spacing measurement device for use in percutaneous ablation according to claim 6, wherein the first, second and third positioning rings each comprise a shaft tube, a needle insertion face wheel disposed at a first end of the shaft tube, and a cover face wheel disposed at a second end of the shaft tube; the needle inlet surface wheel part and the covering surface wheel part are both protruded out of the outer surface of the shaft tube and are matched at intervals to form a positioning clamping groove, and the positioning clamping groove clamps and fixes the first inner ruler, the first outer ruler, the second inner ruler, the second outer ruler and the third inner ruler.
10. The probe positioning and needle spacing measurement device for use in percutaneous ablation according to claim 9, wherein the shaft tube is an axially-extending hollow tubular member with a cavity for receiving an ablation probe.
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| CN114739252A (en) * | 2022-04-28 | 2022-07-12 | 圆达(厦门)纺织科技有限公司 | Fast measuring and positioning device for circular knitting machine |
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