CN100593393C - Manual puncture guider - Google Patents
Manual puncture guider Download PDFInfo
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- CN100593393C CN100593393C CN200510105466A CN200510105466A CN100593393C CN 100593393 C CN100593393 C CN 100593393C CN 200510105466 A CN200510105466 A CN 200510105466A CN 200510105466 A CN200510105466 A CN 200510105466A CN 100593393 C CN100593393 C CN 100593393C
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Abstract
A puncture guide method and its hand-held puncture guide device are disclosed. Said hand-held puncture guide device used in conjunction with CT scanner for puncture, biopsy, or injection has a regulator module for the target surface of puncture, and a regulator module for the puncture angle.
Description
Technical field
The present invention relates to a kind of hand-held guiding puncture instrument, particularly a kind of be used in combination with the CT scan device under the image tomography, puncture, the hand-held guiding puncture instrument of diagnosis and treatment purposes such as biopsy, injection.
Background technology
When inside of human body generation pathological changes, need to utilize puncture that focus is carried out biopsy or treatment sometimes.Normally determine the orientation of focus and skin anchor point and the degree of depth of puncture needle by means of instrument (as the CT scan device), promptly be generally: the position of at first on the cross section of human body, measuring focus with the CT scan device, in this aspect, select best inserting needle position and needle angle, utilize the three-dimensional structure picture decision focus of inserting needle aspect, needle angle and depth of needle and the exact position of lancet puncture.Though the CT scan device can be determined three-dimensional needle angle and depth of needle exactly, but the process of puncture is all carried out patient after the CT scan aspect shifts out, when patient leaves the CT scan device, the doctor can only be according to the judgement of oneself, determine an inserting needle direction roughly, puncture, and then carry out CT scan and confirmed.Because artificial factor is more, usually causes inserting needle inaccurate, the degree of accuracy of influence treatment.Sometimes need to repeat repeatedly inserting needle, can cause mistake to be worn when serious, bring great misery and risk to the patient.Therefore, the insider develops some and is used to the positioning means for positioning that punctures, for example:
U.S. Patent number US5,957,933 disclose a kind ofly in conjunction with the three-dimensional guiding device on the CT scan device, are used to guide probe to enter in the patient body.Though this solid guiding device can be from the different directions of human body, biopsy needle guide accurately arrives lesions position, and shows whole inserting needle process, its frame for movement, control system complexity, and processing cost is high, and manipulates inconvenience.
U.S. Patent number US5,196,019 disclose a kind of puncture needle position finder, and this guide instrument does not need complex apparatus, and its structure is than US5, and 957,933 disclosed three-dimensional guiding devices are simply many, can single hand-held carrying out.As shown in Figure 1, this device main body comprises a pair of ring, promptly outer shroud 30 ' and internal ring 40 '; Outer shroud 30 ' arc circumference be provided with the angle index line; Internal ring 40 ' rotating be located at outer shroud 30 ' interior and with outer shroud 30 ' same axis, internal ring 40 ' be provided with a thorn needle guidance apparatus.Outer shroud 30 ' arc in be provided with sawtooth on the curved surface, internal ring 40 ' outer curved surface be provided with elasticity thrust pawl to connect and to break away from sawtooth; The plane at pricker guiding device place be provided with a handle 50 ', when the puncture needle guiding device moves to puncture position, utilize handle to rotate elasticity thrust pawl locked in the sawtooth.Though all simple in structure and hand-holdable use of this device, but because actual needle angle and the identical adjustment assembly of the desired needle angle of CT that the actual inserting needle aspect that is used for guaranteeing puncture needle overlaps fully with the scanning aspect at focus point place and guarantees puncture needle is not set, so use under the only suitable zero degree situation of CT frame of this CT guide puncture position finder perpendicular to sick bed.Like this when the scanning aspect at focus point place be when under the certain angle of CT rack inclining, obtaining, the doctor just can't utilize this guide instrument to adjust the angle of inserting needle aspect, makes the doctor to estimate and rule of thumb to adjust.Be subjected to the influence of experience and some on-the-spot factors, be easy to cause the inaccurate of inserting needle, need to repeat repeatedly inserting needle sometimes, can cause mistake to be worn when serious, brought very big inconvenience for doctor's treatment, also bring great misery and risk to the patient.
At use inconvenience, the inaccurate problem in location of above-mentioned prior art, the special the application that proposes.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of accurate positioning, simple in structure, easy to operate guiding puncture method and a kind of hand-held guiding puncture instrument.
As first purpose of the present invention, the technical scheme of guiding puncture method of the present invention is as follows:
A kind of guiding puncture method, it comprises:
The adjustment of puncture needle needle angle is with according to the desired needle angle inserting needle of CT;
The adjustment of puncture needle inserting needle benchmark, parallel fully with the datum line of the definite needle angle of the datum line that guarantees the actual needle angle of puncture needle and CT scan;
It is characterized in that: also comprise the adjustment of puncture needle inserting needle aspect, its method is: the zero degree position of proofreading the inserting needle aspect of puncture needle a), earlier; B), again adjust the inserting needle aspect of puncture needle by the angle of inclination of CT scan aspect, make it parallel fully with the CT scan aspect.
As further optimization, the method of the zero degree position of the inserting needle aspect of the check and correction puncture needle a) is the zeroing function that utilizes a horizontal indicating device with the zero degree set positions of horizontal indicating device inserting needle aspect and the vertical zero degree of the human body y direction position for the puncture needle place, and the zero degree position that guarantees horizontal indicating device promptly guarantees the zero degree position of inserting needle aspect.
As further optimization, b) method that the inserting needle aspect of puncture needle is adjusted at the angle of inclination by the CT scan aspect described in is: puncture needle is fixed on one can realizes on the device of angular surveying, utilize the angle of the angle adjustment puncture needle place aspect of adjusting this device.
As further improvement, the method for angle that the angle adjustment puncture needle place aspect of this device is adjusted in described utilization is: a) this can realize angular surveying device with the vertical direction of inserting needle aspect on design have the Weight type indicating device and that can on the vertical direction in inserting needle plane, swing that the substrate that has angular surveying of Weight type indicating device pendulum angle can be shown; B) the zero graduation position of adjustment substrate, the pointer position when making itself and Weight type indicating device sagging naturally is relative, and the inserting needle aspect at puncture needle place is positioned at and the vertical position of human body y direction; C) press the rotation direction rotational substrate of CT frame, the pointer of Weight type indicating device is pointed to and the identical position of CT frame deflection angle; D) adjust the device at puncture needle place again, by the identical angle of counter-rotation of substrate rotating, when the pointer of Weight type indicating device pointed to the zero-bit of substrate, this moment, the deflection angle of inserting needle aspect at puncture needle place was the deflection angle of CT frame.
Horizontal indicating device described in the said method can be the horizontal indicator of a bubble type, also can be the Weight type indicating device that a upper end has pointer.
As another object of the present invention, the present invention also provides a kind of hand-held guiding puncture instrument, and its total technical scheme is as follows:
A kind of hand-held guiding puncture instrument, it comprises:
One support;
One screens arrangement for guiding, the end that it is arranged on support is used for guiding puncture needle and adjusts the needle angle of puncture needle;
It is characterized in that: also be provided with a rotating adjustment assembly in support, this adjustment assembly is made of the adjustment assembly of puncture aspect and the adjustment assembly of inserting needle benchmark; The adjustment rotation axis of the adjustment assembly of the aspect that wherein punctures is vertical with the adjustment rotation axis of puncture needle, and the adjustment rotation axis of the adjustment assembly of inserting needle benchmark is parallel with the adjustment rotation axis of puncture needle.
As further optimization of the present invention, the adjustment assembly of described puncture aspect comprise a rotating X ' who is arranged in the support and indicates the angle index line to substrate and one with X ' to substrate with being hubbed on of pivot center, and the Weight type indicating device that can freely swing, the pivot center at described Weight type indicating device place is the adjustment rotation axis of the adjustment assembly of described puncture aspect.
As the further optimization of adjustment assembly of puncture aspect, described X ' is provided with a zero degree cue mark to the lower end of substrate; On the sidewall of the support relative with this cue mark, be provided with a transparent angle dial, the center of circle of this angle dial is located on the puncture layer end adjustment rotation axis.Like this, when the indicating device of the zero degree of substrate angle index line and Weight type indicating device was relative, X ' was also just in time relative with the zero degree of angle dial to the zero degree cue mark of substrate lower end.
Preferred embodiment as the adjustment assembly of needle angle of the present invention, it is a bubble and scale, this air-bubble level is fixed on the support along the vertical direction of adjustment rotation axis with puncture needle, and its axial line is the adjustment rotation axis of the adjustment assembly of described inserting needle benchmark.
As another embodiment of the adjustment assembly of needle angle of the present invention, it comprise a rotating Y ' who is arranged in the support and is provided with the angle index line to substrate and one with Y ' to substrate be hubbed on, and the Weight type indicating device that can freely swing; The pivot center at described Weight type indicating device place is the described adjustment rotation axis that is the adjustment assembly of described inserting needle benchmark.
As the further optimization of the setting of the adjustment assembly of needle angle, the Y ' of the adjustment assembly of described inserting needle benchmark rotates to the substrate coaxial line to the X ' of substrate with the adjustment assembly of puncture aspect.As a preferred embodiment, Y ' to substrate with
X ' to the substrate vertical fixing together; As another preferred embodiment, but Y ' is to mode and X ' being set together to substrate coaxial line of substrate with independent rotation.But when Y ' to substrate with the mode of independent rotation and X ' during to being set together of substrate coaxial line, that further optimizes places the upper end of X ' to the substrate center of gravity with Y ' to the axis of rotation of substrate.
Above-mentioned Weight type indicating device all comprises from top to bottom successively: one has the indicating device of angle deictic function, and this indicating device can be preferably a pointer; One axle sleeve that can be hubbed on corresponding substrate, a total energy are pointed to the earth's core, are had the weight of zeroing function.
As further optimization, the mode that described Weight type indicating device is hubbed on the substrate separately is: on Weight type indicating device opposing substrates side, form a cylindrical projection perpendicular to substrate, its diameter just produces matched in clearance with the axle sleeve of Weight type indicating device, freely swings around it to guarantee the weight indicating device.
As the further optimization of above-mentioned adjustment assembly, described X ' is arc end face to substrate and Y ' to the end face of substrate, and described angle index line is located on the arc end face; Be that the pointer that the upper end of the weight indicating device that matches with both is connected all can be free to slide along the arc end face of substrate separately accordingly to the arc end face of substrate with X ' to substrate and Y '.
Further optimization as above-mentioned adjustment assembly, described X ' is cavity body structure to substrate, Y ' to substrate, described Weight type indicating device is arranged in the cavity of substrate separately, and the size of cavity volume all can satisfy separately the Weight type indicating device and can swing freely around its rotation axis.
As further optimization, described X ' to substrate, Y ' to the cavity body structure of substrate by two substrates with buckle or sticking and form constitute.
As further optimization of the present invention, the screens arrangement for guiding of described puncture needle comprises: corner index dial, needle stand and fastening adjustment part, wherein: the corner index dial, be arranged on the end of support removably or directly be formed on the end face of support, it is marked with the angle index line; Needle stand is parallel on the rotating end face that is arranged on support of corner index dial or on the card of corner index dial, the centrage of the axis of its rotation and corner index dial belongs to same straight line; The fastening adjustment part is arranged on the needle stand, make puncture needle by it along being fixed on the needle stand radially, longitudinally of needle stand, this moment puncture needle the longitudinal axis and the plane parallel at corner index dial place.
The mode that removably connects such as described corner index dial the mode on the support of being installed in can adopt plug-in mounting, clamps, screw is fastening also can adopt the mode that is formed directly on the support end face.
The mode that described needle stand is rotating to be arranged on the card of the end face of support or corner index dial can adopt card to join or the axle ways of connecting.
As a preferred embodiment of fastening adjustment part, described fastening adjustment part is a bolt-type fastening adjustment assembly, and its footpath at needle stand makes progress, and is provided with the open type that can hold puncture needle and leads to guide groove, the plane parallel at the longitudinal direction of this guide groove and corner index dial place; Along also being provided with the latch that a chute and of crossing the needle stand center is slidedly arranged in this chute, can moves freely along chute with vertical another radial direction of guide groove, this latch and guide groove interior surface opposing have an inclined-plane, this inclined-plane and guide groove form the enclosed space that puncture needle is directly made progress, and this enclosed space is along with inclined-plane moving from outside to inside constantly dwindled.
As further optimization, the cross section of the guide groove of described needle stand is an isosceles del wide at the top and narrow at the bottom.
As further optimization of the present invention, described fastening adjustment part is an inserting column formula fastening adjustment assembly, and its footpath at needle stand makes progress, and is provided with an open type and leads to circular groove, and the Y-direction direction of this circular groove is parallel with the measurement plane at corner index dial place; With circular groove is complementary be, described inserting column formula fastening adjustment assembly also is provided with a cylindricality guide bracket, and the external diameter of guide bracket equals the internal diameter of circular groove; This guide bracket axially on also be provided with circular guiding groove of leading to of an open type; The diameter of guiding groove is decided according to the external diameter of puncture needle.
As the further improvement of the preferred embodiment, for ease of the rotation guide bracket, the upper end of cylindricality guide bracket is provided with a handwheel, and described circular guiding groove passes through handwheel.
As further optimization of the present invention, the bottom surface of described support is that a spherical or a longitudinal axis are parallel to the cylindroid that puncture needle is adjusted rotation axis.
As the further improvement of such scheme, the upper end of described support is provided with a transparent cover, can see the motion of the relative substrate zero graduation of pointer of Weight type indicating device by this cover.
As the further improvement of such scheme, described support is fastened by the base and the seat of honour and forms.
Such scheme also can carry out certain combination in the intelligible scope of those skilled in the art, form new technical scheme.
In sum, the present invention is by the setting of the adjustment assembly of puncture aspect and inserting needle benchmark, make no matter the present invention is under the zero degree situation of the vertical XOY plane of CT frame or around the work of following time of a α angle of Y-axis inclination, as long as when the inserting needle position that puncture needle is measured with CT scanner, needle angle, depth of needle inserting needle, total energy guarantees that the puncture aspect B of puncture needle overlaps fully with CT scan aspect A, and can accurately hit the focus point.The optimization of screens arrangement for guiding, support and the structural relation between them makes this guide instrument extremely easy to use, the single hand-held that gets final product, and the patient is exposed ray (not having exposure) not, has shortened the operating time greatly, can finish about 15 minutes.
Describe the present invention in detail according to the drawings and specific embodiments below.
Description of drawings
Fig. 1 is prior art US5,196,019 structural representation
Fig. 2 is a fundamental diagram of the present invention;
Fig. 3 is the schematic appearance of the embodiment of the invention one;
Fig. 4 is the stereochemical structure decomposing schematic representation of embodiment one;
Fig. 5 is needle stand among the embodiment one and the corner index dial work sketch map when adopting the buckle mode to combine;
Fig. 6 is the work sketch map of the bolt-type fastening adjustment part of embodiment one;
Fig. 7 be among the embodiment one in the Y-axis adjustment assembly substrate and handle and Weight type indicating device cooperate sketch map figure
Fig. 8 is that the fastening adjustment part is the work sketch map among the embodiment two of inserting column formula fastening adjustment part
Fig. 9 is that the screens arrangement for guiding when the corner index dial is plugged on the end of support is provided with sketch map among the embodiment three;
Figure 10 is that the screens arrangement for guiding when the corner index dial is formed by the end face of support is provided with sketch map among the embodiment four;
The specific embodiment
The present invention relates to a kind of guiding puncture method, also relate to a kind of medical apparatus and instruments that designs according to this method, particularly a kind of be used in combination with the CT scan device under the image tomography, puncture, the hand-holdable formula guiding puncture instrument of diagnosis and treatment purposes such as biopsy, injection.Because this guided ware is provided with the adjustment assembly of puncture aspect and inserting needle benchmark, make puncture needle no matter in the CT frame during for which kind of angle, the actual inserting needle aspect of puncture needle can overlap fully with the scanning aspect, actual needle angle can be identical with the desired needle angle of CT, improved the degree of accuracy of inserting needle greatly.
For ease of understanding the present invention, operation principle of the present invention is described earlier:
As shown in Figure 2, the scanogram at the focus point place that A obtains when tilting an angle [alpha] for the frame 100 in CT scanner, wherein:
The O point is the focus point, is that initial point is set up three-dimensional coordinate XYZO with O: the axis of crossing the O point and being parallel to the human body y direction is defined as X-axis; Cross the O point, and axis that be positioned at scanning aspect A on vertical with X-axis is defined as Y-axis; Cross O point, vertical with Y-axis and be defined as the Z axle with axis that Y-axis is positioned on the same scanning aspect A.At this moment, the scanning aspect at focus point place is the YOZ plane.Wherein, the L point is the skin penetrating point, and LO is desired puncture needle path, and this segment distance is referred to as depth of needle; With the Z axle is the inserting needle benchmark, and the angle between straight line LO itself and the Z axle is called needle angle, and we are designated as θ to it; Cross Y-axis do one with the vertical plane h in level ground, the angle between described YOZ plane and the H plane is the angle of inclination of CT frame, we count α to it.When α less than zero the time, the CT frame is a retroverted state; When α greater than zero the time, the CT frame is a forward-lean state; When α equalled zero, the CT frame was perpendicular to the level ground, and we are called zero degree.
After having determined inserting needle position, needle angle and depth of needle with CT scanner, entry point on the labelling of the relevant position of body surface, also be the point of puncture L of skin, human body leaves CT scanner, the doctor with measured entry point L, needle angle θ and depth of needle OL to patient's inserting needle that punctures.Suppose O
1Be the point of impact of puncture needle, B was O
1Human body section on the inserting needle aspect at the puncture needle place of point is with O
1For initial point is set up three-dimensional coordinate X
1Y
1Z
1O
1: cross O
1Point and the axis that is parallel to the human body y direction are defined as X
1Axle; Cross O
1Point and X
1Vertical and the axis that be positioned on the B face of axle is defined as Y
1Axle; Cross O
1Point and Y
1Vertical and and the Y of axle
1The axis that axle is positioned on the same B face is defined as Z
1Axle; At this moment, Y
1O
1Z
1The plane is the inserting needle aspect at puncture needle place, and B is human body at Y
1O
1Z
1The profile image at place, plane.
Because human body all lies low on examinating couch when CT examination and operation, so X-axis in the XYZO coordinate system and X
1Y
1Z
1O
1X in the coordinate system
1Axle is parallel.
We if realize the point of impact of puncture needle and overlapping fully of focus point, must satisfy following two conditions as can be seen thus:
One, the inserting needle aspect Y at puncture needle place
1O
1Z
1Overlap fully with the scanning aspect YOZ at focus point place;
Two, the benchmark of needle angle θ must be identical, i.e. O
1Z
1Overlap fully with OZ.
In the CT scan process, in order to obtain more suitably entry point, the frame of CT scanner usually can be carried out certain front or rear inclination around Y-axis.When the frame anglec of rotation was α, scanning aspect YOZ also promptly rotated an angle [alpha], just required the inserting needle aspect Y at puncture needle place this moment
1O
1Z
1Also should angle [alpha] of equidirectional rotation.
During use, puncture needle normally is fixed on a plane C by a screens arrangement for guiding, and advances human body from this planar radial guide.When needs are adjusted needle angle, carry puncture needle by this plane and rotate around its axis.We are referred to as this rotation axis of puncture needle the adjustment rotation axis of puncture needle.Suppose the axle center O ' of this rotation axis, we are that initial point is set up three-dimensional coordinate with axle center O ' again: cross O ' and perpendicular to the axis of plane C, promptly the adjustment rotation axis of our above-mentioned puncture needle is defined as X ' axle; Cross O ' point, and axis that be positioned at plane C on vertical with X ' axle is defined as Y ' axle; Cross O ' point, vertical with Y ' axle and be defined as Z ' axle with axis that Y ' axle is positioned on the same plane C; Angle between puncture needle and the O ' Z ' axle is actual needle angle θ ', and Z ' axle is actual inserting needle benchmark, and Y ' O ' Z ' plane at C place, plane is actual inserting needle aspect.
During operation, if will guarantee that actual inserting needle aspect overlaps fully with the CT scan aspect, actual needle angle θ ' is identical with the desired needle angle θ of CT, must guarantee:
One, at first should make the plane C at puncture needle place place its rotation axis X ' axle and the identical position of human body y direction X, and make Y ' O ' X ' plane and YOX plane parallel, because human body all is flat crouching on examinating couch when still being CT examination when performing the operation, make Y ' O ' X ' plane and YOX plane parallel, even also Y ' O ' X ' plane is parallel with the level ground.Only in this way, actual inserting needle benchmark O ' Z ' just can be parallel fully with CT inserting needle benchmark OZ.How this is judged? this just needs the calibrating installation of an inserting needle benchmark, it not only can be detected can also guarantee that O ' Z ' is parallel fully with OZ by an inserting needle benchmark rotation axis, this benchmark inserting needle benchmark rotation axis must be parallel with X ' axle so;
Two, guarantee plane C and YOZ plane parallel.That is to say, when CT scan aspect YOZ when Y-axis is rotated an angle [alpha], plane C also should be around angle [alpha] of Y ' axle rotation in the same way.Like this, just need the adjusting device of a puncture aspect, make it can guarantee the rotation of plane C along Y ' axle.This moment, we were called Y ' axle the adjustment rotation axis of puncture aspect.
Only satisfying under the above-mentioned condition, when the doctor presses the measured entry point of CT, needle angle and depth of needle inserting needle, its actual inserting needle aspect just can overlap fully with the CT scan aspect, and its actual needle angle and the desired needle angle of CT just can be identical.The present invention just is based on this principle, utilize the adjustment assembly of its puncture aspect that has and inserting needle benchmark, no matter scanogram obtains under which kind of situation of CT frame, the inserting needle aspect that always can guarantee the puncture needle place overlaps fully with the scanning aspect at focus point place, the needle angle and the desired needle angle of CT of puncture needle are identical, thereby makes puncture needle hit the focus point accurately.
Just be based on above-mentioned principle, the invention provides a kind of guiding puncture method and a kind of hand-held guiding puncture instrument:
The guiding puncture method comprises:
The adjustment of puncture needle needle angle is with according to the desired needle angle inserting needle of CT;
The adjustment of puncture needle inserting needle benchmark, parallel fully with the datum line of the definite needle angle of the datum line that guarantees the actual needle angle of puncture needle and CT scan;
The adjustment of puncture needle inserting needle aspect, its method is: the zero degree position of proofreading the inserting needle aspect of puncture needle a), earlier; B), again adjust the inserting needle aspect of puncture needle by the angle of inclination of CT scan aspect, make it parallel fully with the CT scan aspect.
As further optimization, the method of the zero degree position of the inserting needle aspect of the check and correction puncture needle a) is the zeroing function that utilizes a horizontal indicating device with the zero degree set positions of horizontal indicating device inserting needle aspect and the vertical zero degree of the human body y direction position for the puncture needle place, and the zero degree position that guarantees horizontal indicating device promptly guarantees the zero degree position of inserting needle aspect.
As further optimization, b) method that the inserting needle aspect of puncture needle is adjusted at the angle of inclination by the CT scan aspect described in is: puncture needle is fixed on one can realizes on the device of angular surveying, utilize the angle of the angle adjustment puncture needle place aspect of adjusting this device.
As further improvement, the method for angle that the angle adjustment puncture needle place aspect of this device is adjusted in described utilization is: a) this can realize angular surveying device with the vertical direction of inserting needle aspect on design have the Weight type indicating device and that can on the vertical direction in inserting needle plane, swing that the substrate that has angular surveying of Weight type indicating device pendulum angle can be shown; B) the zero graduation position of adjustment substrate, the pointer position when making itself and Weight type indicating device sagging naturally is relative, and the inserting needle aspect at puncture needle place is positioned at and the vertical position of human body y direction; C) press the rotation direction rotational substrate of CT frame, the pointer of Weight type indicating device is pointed to and the identical position of CT frame deflection angle; D) adjust the device at puncture needle place again, by the identical angle of counter-rotation of substrate rotating, when the pointer of Weight type indicating device pointed to the zero-bit of substrate, this moment, the deflection angle of inserting needle aspect at puncture needle place was the deflection angle of CT frame.
Horizontal indicating device described in the said method can be the horizontal indicator of a bubble type, also can be the Weight type indicating device that a upper end has pointer.
Based on the above-mentioned guiding puncture method that provides of the present invention, hand-held guiding puncture instrument provided by the present invention, it comprises:
One support 4;
One screens arrangement for guiding 2, the end that it is arranged on support 4 is used for guiding puncture needle 1 and adjusts the needle angle of puncture needle 1;
One adjustment assembly 3, its rotating being arranged in the support 4, the actual inserting needle aspect that is used for guaranteeing puncture needle overlaps fully with the scanning aspect at focus point place and guarantees that the actual needle angle of puncture needle and the desired needle angle of CT are identical; Described adjustment assembly 3 is made of the adjustment assembly 31 of puncture aspect and the adjustment assembly 32 of inserting needle benchmark; The adjustment rotation axis of the adjustment assembly 31 of the aspect that wherein punctures is vertical with the adjustment rotation axis of puncture needle, and the calibration rotation axis of the adjustment assembly 32 of inserting needle benchmark is parallel with the adjustment rotation axis of puncture needle.
Below in conjunction with specific embodiment technical conceive of the present invention is described:
Embodiment one
As shown in Figure 3, Figure 4, the present invention totally comprises three parts: support 4, be located at the screens arrangement for guiding 2 and the rotating adjustment assembly 3 that is located at support 4 inside of support 4 ends, the assembly 3 of wherein harmonizing comprises again: the adjustment assembly 31 of puncture aspect and the adjustment assembly 32 of inserting needle benchmark.The adjustment rotation axis of the adjustment assembly 31 of the aspect that wherein punctures is vertical with the adjustment rotation axis of puncture needle, and the calibration rotation axis of the adjustment assembly 32 of inserting needle benchmark is parallel with the adjustment rotation axis of puncture needle.
The concrete structure of each building block of present embodiment and the concrete annexation between each parts under specifically describing below.
One, the screens arrangement for guiding 2 of puncture needle
As shown in Figure 3, Figure 4, the screens arrangement for guiding 2 of puncture needle is arranged on the end 41 of support 4, it comprises: corner index dial 21, needle stand 22 and fastening adjustment part 23, annexation between three and the support 4 is: corner index dial 21 is arranged on the support 4, needle stand 22 is arranged on the corner index dial 21, and fastening adjustment part 23 is arranged on the corner index dial 21.
(1) the corner index dial 21
In order to show the needle angle of puncture needle 1, the present invention is provided with corner index dial 21.As shown in Figure 3, Figure 4, the corner index dial 21 vertical ends 41 that are arranged on support 4, its excircle indicates the angle index line uniformly, and its zero graduation line is located at the centre position of angle index line, when puncture needle pointed to the zero graduation line, the actual needle angle of promptly representing puncture needle 1 was zero.
As further optimization, corner index dial 21 is fixed on the end face of support 4 ends in the mode of buckle.For better realizing cooperation between the two, the end face 411 of support 4 is designed to the annular end face 411 perpendicular to the level ground of open type, has one on the annular end face 411 and is used for blocking the groove 412 of joining with corner index dial 21.With the annular end face 411 of head 1 and go up that groove 412 adapts be, corner index dial 21 comprises the internal ring 211 and the outer shroud 212 of two concentrics, two rings are formed by connecting by a middle connecting plate 213, and the internal diameter of outer shroud 212 equals the external diameter of support 4 annular end faces, the external diameter of internal ring 211 equals the internal diameter of support 4 annular end faces, and both radial differences just in time equal the wall thickness of support 4 ends; Groove 412 sizes on the overall dimensions of middle connecting plate 213 and the annular end face 41 match fully, and guarantee that cooperation between the two just in time makes the zero graduation line of corner index dial 21 in vertical with the level ground.As further optimization, the thickness of groove 412 more preferably greater than or equal the thickness of middle connecting plate 213, the thickness of the preferred groove 412 of present embodiment equals the thickness of middle connecting plate 213, corner index dial 21 is gripping on the end of support, can also make the measurement face at corner index dial 21 places and the end face of support 4 be in same plane, to reduce the error when reading the pricker anglec of rotation.
Certainly, corner index dial 21 is fixed on the mode on the support 4, also can adopt intelligible other the detachable fixed forms of the prior art of those skilled in the art, but no matter adopt which kind of fixed form, what time followingly all should satisfy: one, corner index dial 21 place measurement planes and zero graduation line must be vertical with the level ground as far as possible; Two, be convenient for measuring; Three, make things convenient for inserting needle.
As further optimization, outer shroud 211 is simplified to the semicircular ring of having only the first half.
As further optimization, the angle index line of corner index dial 21 also can be marked respectively and be located on internal ring 211 and the outer shroud 212.
As further optimization, the radius size of the outer shroud 212 of corner index dial 21 can be decided according to puncture needle 1 required length.Under the situation that does not influence inserting needle, that does as far as possible is big, can make certainty of measurement higher like this.
As further optimization, the width of middle connecting plate 213 and groove 412 is the smaller the better, like this behind the needle angle of reserving puncture needle, can be as required easily from the fracture outer dish 212 of corner index dial of connecting plate 213.
(2) needle stand 22 and fastening adjustment part 23
In order to adjust needle angle and to satisfy the fixedly needs of the puncture needle of various outer diameter size, this screens arrangement for guiding 2 also is provided with needle stand 22 and fastening adjustment part 23.
As Fig. 4, shown in Figure 3, needle stand 22 is rotating to be arranged on the card of corner index dial 21, and the centerline of its pivot center and corner index dial 21 is in same straight line.For ease of the rotation of needle stand 22, needle stand 22 is optimized for the disc type needle stand.
For the rotatable setting between needle stand 22 and the corner index dial 21, the mode that the present embodiment preference card is joined.As shown in Figure 5, needle stand 22 is on the internal ring 211 corresponding end faces of itself and corner index dial 21, along making progress with a corresponding week of the inner periphery of internal ring 211, at least uniformly be provided with 2 cyclic spring grabs 221, and the draw-in groove 222 external diameter R of all cyclic spring grabs 221 equal the inner diameter d of the internal ring 211 of corner index dial 21, and the card of grab 221 equals the thickness w of internal ring 211 apart from L.So just can utilize the elasticity of elastic fastening hook 221 that elastic fastening hook 221 is injected internal ring, after elastic fastening hook 221 recovers elasticity, can utilize size between the internal ring 211 of its draw-in groove 222 and corner index dial to cooperate is fixed on needle stand 22 on the corner index dial 21, because grab 221 formed draw-in grooves are annular, and its external diameter equals the internal diameter of internal ring 211, so can also guarantee that with the card structure of same radius circumferential arrangement on needle stand 22 needle stand rotates around the coaxial line of itself and corner index dial.In fact, the mode that is rotatably connected between needle stand 22 and the corner index dial 21 can have a lot, as adopting a ways of connecting, also can adopt US5, the connected mode between macro ring disclosed in 196,019 and the little ring.Here just do not state one by one.
For the puncture needle of various outer diameter size is fixed on the needle stand 22, and can regulate the needle angle of puncture needle, also be provided with fastening adjustment part 23 on the needle stand 22, the fastening adjustment part that can realize this purpose has a lot, present embodiment is selected a kind of bolt-type fastening adjustment assembly for use, because this kind bolt-type fastening adjustment assembly can make the puncture needle 1 of various outer diameter size all can be well fixed, and puncture needle 1 is mounted and dismounted very easily.
The formation of this bolt-type fastening adjustment assembly is:
As Fig. 4, shown in Figure 6, for realizing that puncture needle can be rotation axis with the centrage of corner index dial 21, footpath at disc type needle stand 22 makes progress, be provided with the open type that to hold puncture needle 1 and lead to guide groove 231, the longitudinal direction of this guide groove 231 is the plane parallel with corner index dial 21 places, the longitudinal length of this guide groove equals the diameter of disc type needle stand 22, and the degree of depth of this guide groove is more preferably greater than the maximum gauge of the puncture needle 1 that can use.Like this, when puncture needle 1 injects in the guide groove 231 along the longitudinal direction of guide groove 231, its longitudinal axis will be parallel to the plane at corner index dial 21 places.Needs for the puncture needle that adapts to the different-diameter size, the cross section shape of guide groove 231 can be the isosceles trapezoid of falling wide at the top and narrow at the bottom, also can be the isosceles triangle that falls wide at the top and narrow at the bottom, present embodiment is preferably the isosceles triangle that falls wide at the top and narrow at the bottom, like this, can give prominence to two technique effects: one, no matter how thin puncture needle is positioned over when interior, all can guarantee fully to contact with the bottom surface of groove and can not swing back and forth.Two, the center of rotation at assurance puncture needle place is exactly the center of corner index dial 21.
Do not come off for 231 li for further puncture needle 1 being fastened on guide groove, fastening adjustment part 23 on disc type needle stand 22 along also being provided with the latch 233 that a chute 232 and of crossing dish seat 22 centers is slidedly arranged in this chute 232, can moves freely along chute 232 with guide groove 231 vertical another radial direction.For adapting to the variation of different needle diameter, latch 233 has been done an inclined-plane 2331 with guide groove 231 interior surface opposing.Because chute 232 is all crossed the center with guide groove 231, both can form an intersection space in the center of needle stand 22.When the inclined-plane 2331 of latch moves to cross space when place and guide groove 231 formation one enclosed space that pricker 1 is moved along guide groove 231 longitudinal directions.Outside when mobile when latch 233, enclosed space amplifies; When latch 233 was mobile inwards, enclosed space dwindled.Inclined-plane 2331 along chute 232 longitudinally length and needle diameter change big or small corresponding.So in use, just can be according to the big or small mobile latch 233 of the external diameter of puncture needle 1 to adapt to the variation of puncture needle external diameter.By such fixed mechanism, the puncture needle of which kind of diameter all can obtain well radially fixing and can guarantee that puncture needle 1 moves around along guide groove 231.
As further optimization, chute 232 and latch 233 all adopt the inverted T-shaped structure, and latch 233 just will not come off out from chute like this.
As further optimization, the longitudinal length of chute 232 is more preferably greater than the radius of disc type needle stand 22 diameter less than disc type needle stand 22, and the one end is preferably opened on outer peripheral face.
In sum, the footpath that the fastened regulating part 23 of puncture needle is fixed on needle stand 22 longitudinally makes progress, and can be rotated to realize the adjustment of needle angle by the centrage (also being the rotation axis of needle stand 22) that needle stand 22 carries around a corner index dial 21, this rotation axis is exactly the adjustment rotation axis of our so-called puncture needle.
We are as can be seen thus: screens arrangement for guiding 2 of the present invention not only makes the puncture needle of various outer diameter size can both be well fixed in use by the design of bolt-type fastening adjustment assembly, also can mount and dismount very easily, simultaneously can also utilize rotating needle stand 22 that puncture needle is turned to any required angle, and measure the angle at its place accurately by corner index dial 21, for doctor's accurate inserting needle provides strong condition.Because the adjustment of puncture needle needle angle is to realize by the rotation that needle stand carries the centrage (also being the rotation axis of needle stand 22) of its angular indexing dish 21 that rotates, so the centrage of corner index dial 21, (also being the rotation axis of needle stand 22 simultaneously) is exactly the adjustment rotation axis of our so-called puncture needle.
But, want pricker and accurately reach focus point and do not injure other organ-tissues, the actual inserting needle aspect that also must guarantee puncture needle overlaps fully with the scanning aspect at focus point place and guarantees that the actual needle angle of puncture needle and the desired needle angle of CT are identical.Because the plane C at puncture needle place and the plane parallel at corner index dial 21 places, therefore the inserting needle aspect that wants the puncture needle place overlaps with the CT scan aspect, must make corner index dial 21 place measurement planes no matter when all parallel with the scanning aspect, the OZ axle in the three-dimensional coordinate that the zero graduation line that also should guarantee corner index dial 21 is simultaneously set up during with CT scan is parallel.Do you so how judge and are adjusted? for this reason, the present invention has provided the puncture aspect that can solve those problems and the adjustment assembly 3 of inserting needle benchmark.
The adjustment assembly 3 of three, puncture aspect and inserting needle benchmark
As shown in Figure 3, Figure 4, the adjustment assembly 3 rotating inside that are arranged on support 4, it comprises: the adjustment assembly 31 of the adjustment assembly 32 of inserting needle benchmark and puncture aspect, wherein:
The adjustment assembly 31 of puncture aspect comprise a rotating X ' who is arranged in the support 4 and indicates the angle index line to substrate 311 and one with X ' to substrate 311 with being hubbed on of pivot center, and the Weight type indicating device 312 that can freely swing.This moment, Weight type indicating device 312 rotation axis was the adjustment rotation axis of puncture aspect, and X ' should guarantee that to the setting of substrate 311 and Weight type indicating device 312 its rotation axis is vertical with puncture needle adjustment rotation axis.
The adjustment assembly 32 of needle angle comprise a Y ' who is provided with the angle index line to substrate 321 and one with Y ' to substrate 321 be hubbed on, and the Weight type indicating device 322 that can freely swing.The rotation axis of Weight type indicating device 322 is the adjustment rotation axis of inserting needle benchmark at this moment, and Y ' is parallel with puncture needle adjustment rotation axis to the rotation axis that being provided with of substrate 321 and Weight type indicating device 322 guarantees Weight type indicating device 322.
Described Weight type indicating device 312,322 all comprises from top to bottom successively: one has the indicating device of angle deictic function, and this indicating device present embodiment adopts pointer; One axle sleeve that can be hubbed on corresponding substrate; One total energy is pointed to the earth's core, is had the weight of zeroing function.
Be the rotation of the adjustment assembly 31 of realizing the puncture aspect, the adjustment assembly 31 of puncture aspect also is provided with one handle 313, and this handle is rotating in support 4 outsides to pass support wall and substrate 311 vertical fixing together.
For further marking angle that substrate 311 rotates and the adjustment of being convenient to the puncture aspect, also further be installed with a pointer 3113 in the bottom of substrate 311, be provided with a transparent angle dial 3112 in the corresponding position of the housing of support 4.Be simplified structure, substrate pointer 3113 directly forms on substrate 311.When the pointer of the zero degree of substrate angle index line and Weight type indicating device was relative, X ' was also just in time relative with the zero degree of angle dial 3112 to the zero degree cue mark 3113 of substrate 311 lower ends.
The adjustment assembly 32 of present embodiment inserting needle benchmark is not provided with handle, but its substrate 321 is linked together with substrate 311 vertical fixing.Since the patient when carrying out CT scan and the patient in operation process, be and lie low on examinating couch, X-direction is regarded as constant, zeroing function by weight indicating device 322 just can make the benchmark of needle angle obtain calibration, therefore, for simplifying structure of the present invention, the tumbler of handle and so on can be set for the adjustment assembly 32 of inserting needle benchmark, and can directly simply substrate 321 and substrate 311 vertical fixing be linked together.
For ease of relatively rotating between observation substrate and the Weight type indicating device, above-mentioned X ' all further is optimized for arc end face to substrate 311 and Y ' to the end face of substrate 321, establishes the angle index line at its end face subscript again; With the arc end face of substrate 311,321 be accordingly, the pointer 3121,3221 that its upper end of weight indicating device 312,322 connects all can be free to slide along the arc end face of substrate separately, this moment, pointer just in time was equal to or slightly greater than the radius of arc end face to the distance of the center of rotation of weight indicating device, made the pointer of indicating device to be free to slide along arc end face like this.According to gravity principle, Weight type indicating device 312 can be perpendicular to sensing the earth's core of level ground, and the direction when it is sagging naturally is parallel to the plane at substrate 311 places and the plane at corner index dial and puncture needle place respectively.
The setting between Weight type indicating device and the substrate for the benefit of, substrate 311,312 respectively by two substrates with buckle or sticking and the form integrator, and form between the two cavity body structure.Present embodiment adopted sticking and mode.As shown in Figure 4, substrate 311 by substrate 3111 and substrate 3112 be bonded, substrate 312 is bonding by substrate 3111 and substrate 3112 respectively; The cavity that two substrates forms all can allow weight indicating device separately to swing freely around its rotation axis.For the angle index on the substrate, can be labeled in respectively on the substrate of two formations, also can select one of them mark.
As Fig. 4, for the weight indicating device being hubbed on its corresponding substrate, on Weight type indicating device opposing substrates side, form a cylindrical projection perpendicular to substrate, its diameter just produces matched in clearance with the axle sleeve of Weight type indicating device, freely swings around it to guarantee the weight indicating device;
The housing and the substrate 311 that pass support for the handle 313 of assembly 31 that Y-axis is harmonized very easily are fixed together, form one on the substrate side relative perpendicular to substrate, the quadrangular or the triangular prism 3134 that outwards protrude with housing, what adapt with it is, described handle 313 has a protruding axle 3131, have the four rib holes 3132 that can produce interference or interference fits in the axle with the quadrangular on the substrate, during installation, pass that the quadrangular 3115 on the corresponding axis hole 45 and substrate 3111 closely cooperates together on support 4 housings with the protruding axle of handle 313 is rotating.Like this, when turning handle outside support 4, substrate will be followed together and be rotated.
Being used for respectively of described substrate 311 both sides is positioned at same axis with Weight type indicating device matched cylindrical projection and the quadrangular that is used for cooperating with handle.
Fig. 7 shows the sketch map that cooperates of substrate 311 and weight indicating device 312 and handle 313.Handle 313 is by the rotating housing that passes support 4 that cooperates of the axis hole 44 on the protruding axle on it 3131 and support 4 housings, cooperates closely interference fit together by the quadrangular 3115 on the interior four rib holes 3132 of its protruding axle 3131 and the substrate 3111 afterwards; The opposite side of substrate 3111 is hubbed on the axle sleeve 3122 of the weight indicating device mode with matched in clearance by the cylindrical projection 3116 on it, and weight indicating device 312 can be freely swung in the plane parallel with substrate 311 around cylindrical projection 3116.Quadrangular 3155 is in same axis with cylindrical projection 3116.
As further improvement, Y ' also can form a rotating supporting construction with support to the right one side of substrate 321 and support side, is beneficial to the stable setting of whole adjustment assembly in support 4.As: outwards form a protruding axle 3215 in Y ' to the side of substrate 321, being used for respectively of axis of this protruding axle 3215 and substrate 311 both sides is positioned at same rotation axis with Weight type indicating device matched cylindrical projection 3116 and the prism 3115 that is used for cooperating with handle, the adjustment rotation axis that promptly punctures layer; Be provided with an axle bed 46 that can supply protruding axle 3215 to rotate with Y ' to that wall of the corresponding support 4 of substrate 321 lateral protruding axles 3215.
What will reaffirm at last is, though the corresponding separately substrate of the weight indicating device of the adjustment assembly 32 of inserting needle benchmark and the adjustment assembly 31 of puncture aspect and its is positioned at same pivot center, but when substrate 311,312 rotates with handle 313, weight indicating device 312 is not swung, like this, the deviation angle between the zero graduation of pointer 3121 by weight indicating device 312 and substrate 311 just can be judged the rotation situation of substrate 311.
Thus, when the scanning gantry of CT machine rotates an angle [alpha], realize the puncture aspect A of puncture needle and overlapping fully of scanning aspect B, can substrate 311 be rotated to identical angle [alpha] by handle 313, at this moment, because weight indicating device 312 does not rotate with substrate 311, to produce an angle between the zero graduation of substrate 311 upper ends and the pointer 3121, afterwards, the counter-rotation support 4 again, make the pointer 3121 of weight indicating device revert to zero-bit, the anglec of rotation of support 4 promptly equals the anglec of rotation of CT frame at this moment.Also need monitor whether the pointer of weight indicating device 322 of the adjustment assembly 32 of inserting needle benchmark points to the zero graduation of its substrate 321 this moment.If non-vanishing, rotate support 4 gently along X ' axle this moment again, up to the zero graduation of its substrate 321 of pointed of weight indicating device 322.
Four, support 4
Be the setting of the adjustment assembly 3 that adapts to above-mentioned screens arrangement for guiding 2 and puncture aspect and inserting needle benchmark, the present embodiment support adopts and divides body structure up and down, is snapped together by the base 412 and the seat of honour 413 to form.For reaching the dual purpose of the adjustment assembly 3 of being convenient to observe and protect puncture aspect and inserting needle benchmark, the upper end at the seat of honour 413 also is provided with a transparent cover 5 thereon.In addition, the bottom surface of base 412 adopts cylindroid so that the rotation of support 4 on human body, and the axis of this cylindroid is parallel to the adjustment rotation axis of puncture needle.
Above-mentioned is exactly the concrete structure of present embodiment.Describing down below again, the concrete using method of the present invention is:
During use, detect the three-dimensional coordinate position of focus point O, determine the fault plane YOZ of puncture inserting needle by the CT scan device, and at body surface labelling skin entry point L.
Select the puncture needle 1 of suitable diameter for use, it is injected in the guide groove 231 of needle stand 22, mobile latch 232 fastening prickers, press needle angle rotation needle stand 22 to desired position, make tip alignment entry point L place, also need guarantee the y direction of plane, corner index dial 21 place perpendicular to human body this moment, and the pointer 3221 of the weight indicating device 322 of the pointer 3121 of Y-axis weight adjusting device 312, the adjustment assembly 32 of inserting needle benchmark all points to the zero mark of substrate separately.According to the angle of inclination rotary handle 313 of CT frame, make the angle of substrate 311 rotations identical afterwards with the tilt angle alpha of frame.Adjust support 4 gently by the opposite direction of substrate 311 rotations more afterwards, make the pointer 3121 of Y-axis weight adjusting device 312 revert to zero-bit.The anglec of rotation of support 4 promptly equals the anglec of rotation of frame at this moment.The inserting needle aspect C at puncture needle place also is that the inserting needle aspect B of puncture needle overlaps fully with scanning aspect A.At last, see again whether the pointer 3221 of weight indicating device 322 of the adjustment assembly 32 of inserting needle benchmark points to the zero graduation of substrate 321, as not being, rotate support gently along the opposite direction of the zero graduation of needle deflection substrate 321, make the pointer 3221 of X-axis weight indicating device 322 be classified as zero-bit.Through such adjustment, datum line O ' the Z ' of the actual needle angle of puncture needle is parallel to the datum line OZ of the desired needle angle of CT, so just equal the desired needle angle θ of CT because the inserting needle aspect C at puncture needle place also is the inserting needle aspect B of puncture needle with the actual needle angle θ ' that scanning aspect A overlaps puncture needle fully, just can accurately hit the focus point when inserting needle position of measuring, needle angle and depth of needle inserting needle like this with CT scanner.
The method of work of present embodiment is same as embodiment one.
Embodiment two
What present embodiment and embodiment one were different is that the fastening adjustment part among the embodiment four has adopted inserting column formula fastening adjustment part.As Fig. 8, its footpath at needle stand 22 makes progress, and has one and leads to the cylindrical guide groove 241 of open type, the plane parallel at the longitudinal direction of this cylindrical guide groove 241 and corner index dial 21 places; Be that described inserting column formula fastening adjustment assembly also is provided with a cylindricality guide bracket 242 that can hold puncture needle, the outer diameter D of cylindricality guide bracket 242 with cylindrical guide groove 241 is complementary
2Equal the inside diameter D of cylindrical guide groove 241
1Be fixing puncture needle, cylindricality guide bracket 242 axially on also be provided with a cylindricality guiding groove 243 that leads to; The diameter d of this guiding groove 243
2Outside diameter d according to puncture needle
0And decide, according to the existing different model of puncture needle, puncture needle guiding groove 243 has different internal diameters.But, no matter the internal diameter of guiding groove 243 is much, the outer diameter D of cylindricality guide bracket 242
2Inside diameter D with cylindricality guide groove 241
1Always match.After the operation end, puncture needle takes out from the side, and as further optimization, the pairing chord length of the opening of guiding groove 243 should be less than the diameter length of puncture needle.During use,, again the inside of the opening rotation direction cylindricality guide groove 241 of the guide groove 243 of the cylindricality guide bracket 242 of its puncture needle can be used as long as select suitable puncture needle guide bracket 242 to be inserted in the cylindricality guide groove 241 on the needle stand 22 according to the external diameter of puncture needle.After piercing process finishes, puncture needle can be taken out in the opening rotation direction outside of the guide groove 243 of cylindricality guide bracket 242.
For manually convenient, also outwards protrude the upper end of cylindricality guide bracket 242, forms a handle 244 that diameter is bigger.Described circular guiding groove 243 passes through handle 244.
In fact, can realize in the prior art that the fastening adjustment part of the puncture needle of different-diameter also has a lot, just not state one by one here.So long as can realize and the puncture needle of various outer diameter size can be fixed on longitudinally in the plane parallel, and can be around in this plane, being rotated the purport that does not all break away from the innovation point with corner index dial 21 common axial lines with the measurement plane at corner index dial 21 places.
The method of work of present embodiment is same as embodiment one.
Embodiment three
Different with embodiment one is that corner index dial 21 has adopted the dismountable end 41 that is fixed on support 4 of mode of pegging graft.
As shown in Figure 9: the upper side of the end 41 of support 4 has a slotted eye 413, be accordingly therewith, corner index dial 21 is an annular, the lower end of its internal ring is provided with an inserted block 215 that is complementary with slotted eye 413, both sizes, shape, position match, and the internal diameter of corner index dial 21 equals the external diameter of support end 41.When corner index dial 21 uses, will inserted block 215 inject in the slotted eyes 413 and can realize fixing, time spent not, corner index dial 21 extracted from slotted eye 413 get final product.
Needle stand 22 directly is hubbed on the end face of support 4.Can adopt the connected mode among the embodiment one between the two, also can adopt bearing to connect.
For improving the certainty of measurement of corner index dial 21, the spacing between the measurement plane at corner index dial 21 places and the end end face of support can not be excessive.
The method of work of present embodiment is same as embodiment one.
Embodiment four
As Figure 10 and embodiment one different be, corner index dial 21 is formed directly on the end face 411 of support 4, its method is to establish a central point O ' on the end face 411 of support 4, with this central point O ' is that benchmark directly engraves the corner graduation mark on the end face 411 of support 4, and its zero graduation line is positioned at and the vertical tip position in level ground.For ease of the setting of needle stand 22, the centre that is provided with the graduated support end face of corner has a ring cavity, and the position in the center of circle of this ring cavity is the center of corner graduated disc 21.Needle stand 22 is the circular discs seat, in the rotating ring cavity that is arranged on the support end face, its with annular end face between be connected and adopt US5, the connected mode of macro ring and little ring in 196,019.
In the practice, fixing between corner index dial 21, needle stand 22, the support 4 is a variety of in addition, here just do not state one by one, as long as can realize the measurement of 21 pairs of puncture needle needle angles of corner index dial, realize that the center that puncture needle can be carried with corner index dial 21 by needle stand 22 is the axle center, rotate in the plane parallel with corner index dial 21 place measurement planes, which kind of fixedly connected mode support 4, corner index dial 21, needle stand 22 adopt do not break away from purport of the present invention.
The method of work of present embodiment is same as embodiment one.
Embodiment five
Different with embodiment one is, the Y ' of the adjustment assembly 32 of inserting needle benchmark does not have to adopt X ' with the adjustment assembly 31 of puncture aspect to substrate 311 vertical fixing rotational structure together to substrate 321, but pass by one handle is rotating in support (4) outside that the support wall is perpendicular to be fixed together, utilize the rotation of handle to realize its rotation.
Same straight line of the rotation axis of the pivot center of handle and Weight type indicating device.
Embodiment six
Different with embodiment one is, present embodiment does not have further to be installed with in the bottom of substrate 311 pointer 3113 and is provided with transparent angle dial 3112 in the corresponding position of the housing of support 4.
Present embodiment use money should be at first by 312 zeroings of Weight type indicating device, and the X ' of the adjustment assembly 3 of assurance puncture aspect is relative with the pointer of Weight type indicating device 312 to the zero graduation of substrate 311 angle index lines.The angle adjustment of the aspect that can puncture then, other are same as embodiment one.
Embodiment seven
Different with embodiment one is, the Y ' of the adjustment assembly 32 of present embodiment inserting needle benchmark has adopted the coaxial line rotation to the X ' of the adjustment assembly 31 of substrate 321 and puncture aspect to substrate 311, and its mode is: Y ' is independent around rotating in the mode of tumbler to the same axis of substrate 311 with X ' to substrate 321.As prior art, for substrate, need only the upper end that the position in axle center is positioned at position of centre of gravity with certain severe, just can rely on the effect of gravity that its total energy is kept vertically downward.
The technique effect that the Y ' of present embodiment adopts in such a way to substrate 321 is: no matter how its turning cylinder rotates, and Y ' can never influence the swing and the indication of weight indicating device pointer 322 all the time vertically downward to substrate 321.
The method of work of present embodiment is same as embodiment one substantially.
Embodiment eight
With embodiment one, the adjustment assembly 32 of different is needle angle of the present invention is a bubble and scale, this air-bubble level is fixed on the support 4 along the vertical direction of adjustment rotation axis with puncture needle, and its axial line is the adjustment rotation axis of the adjustment assembly 32 of described inserting needle benchmark.
Because bubble and scale of the present invention is a prior art, its concrete operation principle and method just repeat no more here.
The method of work of present embodiment is same as embodiment one substantially.
At last, need to prove also that protection scope of the present invention is not limited in the foregoing description:
Weight indicating device 322,312 with nulling function also can be replaced by the indicating device in the automatic sensing the earth's core of other types in the prior art;
The inserting needle direction of this hand-held guiding puncture instrument can also comprise a lasing light emitter, and this lasing light emitter inserts route along probe and produces a guiding light beam;
The rotation of substrate 311,321 and needle stand 22 not only can manually realize by handle 313, also can adopt motor automatic control device to realize.
In addition, the present invention not only can be used as image tomograph puncture, also can be used as the guiding device (abbreviation guiding device) of functions such as pathological biopsy, medicine injection, catheter retaining, skeleton perforate, need only during use according to different purposes, change lower front end equipment (as puncture needle) and get final product, all can realize accurately, hit fast target spot.
In sum, guiding puncture method provided by the present invention, its inventive point mainly is
It provides a kind of adjustment side that is different from the puncture needle inserting needle aspect of prior art; The inventive point of hand-held guiding puncture instrument of the present invention mainly is: the present invention has the adjustment assembly of the overlapping of a scanning aspect that can realize focus point under any angle of frame and inserting needle aspect, actual needle angle and identical puncture aspect of the desired needle angle of CT and inserting needle benchmark, and any equivalent variations of doing based on this purport all belongs to protection scope of the present invention.
Claims (9)
1. hand-held guiding puncture instrument, it comprises:
One support (4);
One screens arrangement for guiding (2), the end that it is arranged on support (4) is used for guiding puncture needle and adjusts the needle angle of puncture needle;
It is characterized in that: also be provided with a rotating adjustment assembly (3) in support (4), this adjustment assembly (3) is made of the adjustment assembly (31) of puncture aspect and the adjustment assembly (32) of inserting needle benchmark; The adjustment rotation axis of the adjustment assembly (31) of the aspect that wherein punctures is vertical with the adjustment rotation axis of puncture needle, and the adjustment rotation axis of the adjustment assembly (32) of inserting needle benchmark is parallel with the adjustment rotation axis of puncture needle; The adjustment assembly (31) of described puncture aspect comprises that a rotating X ' who is arranged in the support (4) and indicates the angle index line is to substrate (311), with one with X ' to substrate (311) have same pivot center, with described X ' to substrate (311) be hubbed on, and the first Weight type indicating device (312) that can freely swing, the pivot center at described first Weight type indicating device (312) place is the adjustment rotation axis of the adjustment assembly (31) of described puncture aspect; The adjustment assembly (32) of described inserting needle benchmark comprises the second Weight type indicating device (322) that a rotating Y ' who is arranged in the support (4) and is provided with the angle index line is hubbed on, also can freely swings to substrate (321) with Y ' to substrate (321) and; The pivot center at described second Weight type indicating device (322) place is the adjustment rotation axis of the adjustment assembly (32) of described inserting needle benchmark; The Y ' of the adjustment assembly (32) of described inserting needle benchmark rotates to substrate (311) coaxial line to the X ' of substrate (321) with the adjustment assembly (31) of puncture aspect.
2. a kind of hand-held guiding puncture instrument as claimed in claim 1, it is characterized in that: the adjustment assembly (32) of described inserting needle benchmark is a bubble and scale, this bubble and scale is fixed on the support (4) along the vertical direction of adjustment rotation axis with puncture needle, and the bubble and scale longitudinal axis is the adjustment rotation axis of the adjustment assembly (32) of described inserting needle benchmark.
3. a kind of hand-held guiding puncture instrument as claimed in claim 1 is characterized in that: described Y ' to substrate (321) and X ' to substrate (311) vertical fixing together or Y ' to substrate (321) but with the mode and X ' being set together of independent rotation to substrate (311) coaxial line.
4. a kind of hand-held guiding puncture instrument as claimed in claim 3 is characterized in that: described Y ' is placed the upper end of Y ' to substrate (321) center of gravity to the axis of rotation of substrate (321).
5. a kind of hand-held guiding puncture instrument as claimed in claim 1 is characterized in that: the rotatable setting of the adjustment assembly (31) of described puncture aspect, the adjustment assembly (32) of inserting needle benchmark is: one handle is rotating in support (4) outside to pass support wall and substrate vertical fixing together.
6. a kind of hand-held guiding puncture instrument as claimed in claim 1, it is characterized in that: described screens arrangement for guiding (2) comprising: corner index dial (21), needle stand (22) and fastening adjustment part (23), wherein
Corner index dial (21) is arranged on the end of support (4) removably or directly is formed on the end face of support (4), and it is marked with the angle index line;
Needle stand (22), described needle stand (22) is parallel to corner index dial (21), the centrage of the pivot center of described needle stand (22) and described corner index dial (21) belongs to same straight line, described needle stand (22) be arranged on rotationally that described corner index dial (21) is gone up or the end face of described support (4) on;
Fastening adjustment part (23) is arranged on the needle stand (22), and the footpath that makes the fastened regulating part of puncture needle (23) longitudinally be fixed on needle stand (22) makes progress, the longitudinal axis of puncture needle this moment (1) and the plane parallel at corner index dial (21) place.
7. a kind of hand-held guiding puncture instrument as claimed in claim 6, it is characterized in that: described fastening adjustment part (23) is a bolt-type fastening adjustment assembly, described fastening adjustment part (23) comprises that the open type that can hold puncture needle leads to guide groove (231), a chute (232) and a latch (233), described open type is led to footpath that guide groove (231) is arranged on described needle stand (22) upwards, the plane parallel at longitudinal direction of this guide groove (231) and corner index dial (21) place; Along also being provided with the latch (233) that a chute (232) and of crossing needle stand (22) center is slidedly arranged in this chute (232), can moves freely along chute (232) with vertical another radial direction of guide groove (231), this latch (233) has an inclined-plane (2331) with guide groove (231) interior surface opposing, this inclined-plane (2331) and guide groove (231) form the enclosed space that puncture needle is directly made progress, and this enclosed space is along with inclined-plane (2331) moving from outside to inside constantly dwindled.
8. a kind of hand-held guiding puncture instrument as claimed in claim 7 is characterized in that: the cross section of the guide groove (231) of described needle stand (22) is an isosceles del wide at the top and narrow at the bottom.
9. a kind of hand-held guiding puncture instrument as claimed in claim 6, it is characterized in that: described fastening adjustment part (23) is an inserting column formula fastening adjustment assembly, its footpath at needle stand (22) makes progress, be provided with an open type and lead to circular groove (241), the Y-direction direction of this circular groove (241) is parallel with the measurement plane at corner index dial (21) place; With circular groove (241) is complementary be, described inserting column formula fastening adjustment assembly also is provided with a cylindricality guide bracket (242), and the external diameter of guide bracket (242) equals the internal diameter of circular groove (241); This guide bracket (242) axially on also be provided with circular guiding groove of leading to of an open type (243); The diameter of guiding groove (243) is decided according to the external diameter of puncture needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510105466A CN100593393C (en) | 2005-09-28 | 2005-09-28 | Manual puncture guider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510105466A CN100593393C (en) | 2005-09-28 | 2005-09-28 | Manual puncture guider |
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| CN1939234A CN1939234A (en) | 2007-04-04 |
| CN100593393C true CN100593393C (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510105466A Expired - Fee Related CN100593393C (en) | 2005-09-28 | 2005-09-28 | Manual puncture guider |
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| CN (1) | CN100593393C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972166B (en) * | 2010-10-15 | 2012-07-04 | 上海交通大学医学院附属新华医院 | Surgical tool for mounting internal epiphyseal arrest figure-8 steel plate |
| CN102323176B (en) * | 2011-09-22 | 2014-02-05 | 农业部南京农业机械化研究所 | Determination device of crop leaf droplet retention amount |
| CN102657548B (en) * | 2012-04-25 | 2014-04-02 | 天津大学 | Reversing nuclear magnetic compatible puncture needle clamp |
| CN102940533B (en) * | 2012-12-07 | 2015-12-09 | 童智慧 | puncture locator |
| CN103009372B (en) * | 2012-12-31 | 2015-05-20 | 青岛理工大学 | Device provided with stress monitoring equipment |
| CN103330572B (en) * | 2013-06-28 | 2015-06-17 | 冯威健 | Guider for guiding puncture by using streaking formed on CT (Computerized Tomography) image |
| US10507038B2 (en) * | 2014-11-12 | 2019-12-17 | Civco Medical Instruments Co., Inc. | Needle guide devices for mounting on imaging transducers or adaptors on imaging transducer, imaging transducers for mounting needle guide devices and adaptors for imaging transducers for mounting needle guide devices thereon |
| CN105213029A (en) * | 2015-11-18 | 2016-01-06 | 南京亿高微波系统工程有限公司 | A kind of hand-held ablation needle puncture supporter |
| CN107874817A (en) * | 2016-09-30 | 2018-04-06 | 冯威健 | A kind of puncture positioning device and bootstrap technique |
| CN108294811A (en) * | 2018-02-02 | 2018-07-20 | 姜倩倩 | A kind of cardiovascular inspection puncture auxiliary device |
| CN108904015B (en) * | 2018-06-08 | 2023-05-23 | 王峰 | CT and MRI guided puncture auxiliary orientation device |
| CN108635025B (en) * | 2018-07-24 | 2023-09-05 | 无锡市第二人民医院 | Laser puncture guiding system |
| CN110236656A (en) * | 2019-07-22 | 2019-09-17 | 李禄鑫 | A kind of fixation device for assisting coaxial sleeve needle to adjust the angle |
| CN110680481B (en) * | 2019-11-15 | 2021-01-05 | 元亨同基医疗器械(北京)有限公司 | Method for adjusting launching position of guide holder of puncture positioning instrument |
| CN111391141A (en) * | 2020-03-30 | 2020-07-10 | 南京捷森城机电有限公司 | Indexing device applied to table saw |
-
2005
- 2005-09-28 CN CN200510105466A patent/CN100593393C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1939234A (en) | 2007-04-04 |
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