CN110151273A - A kind of medical crooked needle piercing method based on 3D printing navigation template - Google Patents
A kind of medical crooked needle piercing method based on 3D printing navigation template Download PDFInfo
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- CN110151273A CN110151273A CN201910513761.XA CN201910513761A CN110151273A CN 110151273 A CN110151273 A CN 110151273A CN 201910513761 A CN201910513761 A CN 201910513761A CN 110151273 A CN110151273 A CN 110151273A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3468—Trocars; Puncturing needles for implanting or removing devices, e.g. prostheses, implants, seeds, wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B2034/2046—Tracking techniques
- A61B2034/2065—Tracking using image or pattern recognition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
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Abstract
The invention discloses a kind of medical crooked needles of field of medical technology, including shank and needle core, the top of the shank is integrally formed and is connected with shank cap, the circumferential inner wall of the shank contacts the needle core, the top of the needle core is integrally formed and is connected with needle core cap, and medical crooked needle piercing method of this kind based on 3D printing navigation template can make needle track path effectively avoid certain important organ or tissues, needle point is set smoothly to reach target lesion, to make up the limitation of staight needle puncture；The probability that needle track deviates in crooked needle puncture process can greatly be reduced, utilize 3D printing navigation template technology, solve the technological deficiency that crooked needle punctures, needle track offset probability is greatly reduced, puncture accuracy is improved, improves operation convenience, puncture crooked needle has stronger feasibility in clinical practice, to solve the limitation of staight needle puncture, increase the scope of application that medicine punctures；And the number that image scan is repeated in art will be reduced, reduce the time of contact of ionising radiation.
Description
Technical field
The present invention relates to field of medical technology, specially a kind of medical crooked needle puncture side based on 3D printing navigation template
Method.
Background technique
Puncture needle is a kind of clinically widely applied medical apparatus, certain mainly for having in body relative to body surface
The target lesion of depth carries out the various clinical manipulations such as needle puncture biopsy, particle transplanting, drug injection.It is different in order to be suitable for these
The clinical manipulation of purpose, and it is directed to various different depths and lesion of different nature, clinically there are many different at present
The available use of puncture needle of shape, different size, different brands.But these puncture needles nearly all have a common spy
Point, they belong to staight needle, i.e. the needle track path that the shank of puncture needle is straight and syringe needle is advanced in body is also straight
, and medicine puncture hardly clinically is carried out using crooked needle at present.
When clinically carrying out medicine puncture, need to first pass through the scanning of the medical images such as ultrasound, CT or MR to the position of target lesion
It sets and the case where housing construction is evaluated, the needle track path of puncture needle inserting needle is then redesigned on the basis of image evaluation.
Designed needle track path must avoid certain vitals or specific organization's (nerve, blood vessel), in order to avoid cause body unnecessary
Great bodily injury.
Therefore, when the position of target lesion is remoter, front have vitals block or inserting needle direction on have it is specific
When tissue, staight needle puncture is very restricted.This is likely to cause the needle track path of the staight needle designed, and there are tilt angles
Disadvantage excessive, path is too long increases the difficulty of practical operation.Due to body skin, soft tissue there are certain flexibility and
Mobility adds respirometric influence, therefore tilt angle is bigger, and needle track offset is more easy to happen when practicing operation,
It could even be possible to the needle track path of satisfactory staight needle can not be designed.During puncturing inserting needle, it is to observe needle track
It is no shift and to offset needle track correction whether in place, need to iterate through image scan and assessed.This is duplicate
Image scan increases the contact of ionising radiation (X-ray etc.) so that clinical puncture procedure becomes very complicated, the time extends
Time.Therefore, staight needle puncture has some limitations.It is clinically almost seldom punctured at present using crooked needle.Clinically
When manual operation march pin puncture, punctures, have the defects that very big relative to staight needle.On the one hand, inserting needle angle is determined when puncture
Needle angle is maintained in degree and puncture process, avoids that needle track offset occurs during inserting needle, the difficulty of crooked needle is significantly greater than straight
Needle；On the other hand, the position that inserting needle path and needle point are likely to be breached is predicted, the difficulty of crooked needle is significantly greater than staight needle, clinically
Using limited.
Summary of the invention
The purpose of the present invention is to provide a kind of medical crooked needle piercing method based on 3D printing navigation template, on solving
State proposed in background technique when the position of target lesion is remoter, front have vitals block or inserting needle direction on have
When specific tissue, staight needle puncture is very restricted, this needle track path for being likely to cause the staight needle designed, which exists, inclines
The disadvantage that rake angle is excessive, path is too long increases the difficulty of practical operation.Because there is centainly soft in body skin, soft tissue
Toughness and mobility add respirometric influence, therefore tilt angle is bigger, are more easy to happen needle track when practicing operation
Offset, it could even be possible to the needle track path of satisfactory staight needle can not be designed.During puncturing inserting needle, in order to observe needle
Road whether shift and to offset needle track correction whether in place, need to iterate through image scan and assessed, this is heavy
Multiple image scan increases ionising radiation (X-ray etc.) so that clinical puncture procedure becomes very complicated, the time extends
Time of contact.Therefore, staight needle puncture has some limitations.It is clinically almost seldom punctured at present using crooked needle.Face
On bed when manual operation march pin puncture, punctures, have the defects that very big relative to staight needle.On the one hand, when puncture determine into
Needle angle is maintained in needle angle and puncture process, avoids that needle track offset occurs during inserting needle, the difficulty of crooked needle is obviously big
In staight needle；On the other hand, the position that inserting needle path and needle point are likely to be breached is predicted, the difficulty of crooked needle is significantly greater than staight needle, faces
Using limited problem on bed.
To achieve the above object, the invention provides the following technical scheme: a kind of medical crooked needle, including shank and needle core, institute
The top for stating shank, which is integrally formed, is connected with shank cap, and the circumferential inner wall of the shank contacts the needle core, the top of the needle core
Portion, which is integrally formed, is connected with needle core cap, and the needle core runs through the circumferential inner wall of the shank, and the bottom of the needle core cap and institute
The top contact of shank cap is stated, the shank is " C " shape, is taken from one section of radius value circumference, i.e., the described shank only belongs to together
The crooked radian of one radius value, the shank cannot have the radian of two or more different radii value, also cannot be to have
The serpentine of same radius value radian, the length of the shank should be less than circumference 1/4, and the needle core has identical as the shank
Consistent crooked radian.
A kind of 3D printing navigation template, including thicker 3D printing substrate and slim 3D printing substrate, the thicker 3D printing
The inside of substrate is integrally formed and is connected with thicker staight needle puncture channel and thicker crooked needle puncture channel, the slim 3D printing substrate
Top be integrally formed and be connected with staight needle puncture post and crooked needle puncture post, the inside of the staight needle puncture post is equipped with slim staight needle and wears
The inside in transfixation road, the crooked needle puncture post is equipped with slim crooked needle puncture channel, the thicker staight needle puncture channel and thin straight
The circumferential inner wall contact in pin puncture channel has puncture staight needle, the circle of the thicker crooked needle puncture channel and slim crooked needle puncture channel
All inner wall contacts have shank, the crooked radian and the shank of the thicker crooked needle puncture channel and slim crooked needle puncture channel
Crooked radian is consistent, and length > 2cm of the thicker crooked needle puncture channel and slim crooked needle puncture channel, the thicker crooked needle is worn
Transfixation road and slim crooked needle puncture channel internal diameter are consistent with the outer diameter of the shank.
A kind of piercing method of the medical crooked needle based on 3D printing navigation template, should be based on the medical of 3D printing navigation template
The piercing method of crooked needle includes the following steps:
S1: image scan: before puncture procedure, 3-dimensional image must be carried out and scan such as CT, MR, PET/CT, obtain machine
Body 3-dimensional image data, position to the intracorporal target lesion of machine and its are accurately commented with the relationship of peripheral organs, blood vessel, nerve
Estimate, and determines which organ or tissue needs to avoid damage in puncturing；
S2: design needle track: the purpose punctured according to medicine designs reasonable needle track path on 3-dimensional image, must avoid
The vitals or tissue that should not be damaged first consider the design needle track path for puncturing staight needle, when the needle for puncturing staight needle
When path is unable to satisfy operational requirements due to limited, consider further that the needle track path of design crooked needle, determine optimal radius value, into
The depth of needle angle and inserting needle may be designed as having a plurality of needle track path simultaneously, can there is staight needle simultaneously when there is clinic to need
It, can also be simultaneously there are many different needle angles with the needle track path of crooked needle；
S3: Design Navigation template: by body 3-dimensional image data, the thicker 3D printing base being bonded with body surface is designed
Plate or the slim 3D printing substrate, and determine positioning device, fixed device, pass through the three-dimensional in designed needle track path
Data design corresponding puncture channel, are combined into the whole three-dimensional structure data of 3D printing navigation template；
S4:3D printing: above-mentioned data are imported into 3D printer, corresponding printed material is selected, phase is obtained by 3D printing
The 3D printing navigation template answered is to get the thicker 3D printing substrate or the slim 3D printing substrate；
S5: positioning and fixed: when clinical manipulation, first passing through positioning device and determines the thicker 3D printing substrate or described
Slim 3D printing substrate makes the thicker 3D printing substrate or institute in the corresponding position of subject's body surface, and by fixed device
It states slim 3D printing substrate and is firmly secured to body surface corresponding position；
S6: puncturing and inserting needle: according to the inserting needle path designed in advance, selecting the crooked needle or phase of corresponding radian and length
The puncture staight needle for answering length, respectively along corresponding on the thicker 3D printing substrate or the slim 3D printing substrate
Puncture channel inserting needle, and its needle point is advanced to expected depth, during which it can assess whether needle track occurs partially by image scan
Whether shifting, syringe needle reach predetermined position, after syringe needle reaches target lesion, further according to the purpose that medicine punctures, complete subsequent medicine
Operate such as biopsy, seeds implanted or drug injection.
Compared with prior art, the beneficial effects of the present invention are: this kind is worn based on the medical crooked needle of 3D printing navigation template
Thorn method can make needle track path effectively avoid certain important organ or tissues, needle point is made smoothly to reach target lesion, thus more
The limitation that staight needle punctures is mended, the probability that needle track deviates in crooked needle puncture process can be greatly reduced, utilizes 3D printing navigation mould
Plate technique solves the technological deficiency of crooked needle puncture, and reduction needle track offset probability, raising punctures accuracy, raising operates convenience,
Puncture crooked needle has stronger feasibility in clinical practice, to solve the limitation of staight needle puncture, increases what medicine punctured
The scope of application will reduce the number for repeating image scan, reduce the time of contact of ionising radiation.
Detailed description of the invention
Fig. 1 is that the present invention punctures crooked needle structural schematic diagram；
Fig. 2 is 3D printing substrate schematic diagram of the present invention.
In figure: 100 shank caps, 110 needle core caps, 200 needle cores, 210 shanks, 300 puncture staight needle, 400 thicker 3D printing bases
Plate, 410 thicker staight needle puncture channels, 420 thicker crooked needle puncture channels, 500 slim 3D printing substrates, 510 thin straight pin punctures
Channel, 520 slim crooked needle puncture channels, 530 staight needle puncture posts, 540 crooked needle puncture posts.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of piercing method of medical crooked needle based on 3D printing navigation template, i.e. the energy when crooked needle punctures
It is enough very easily to determine needle angle, firm maintain needle angle, inserting needle path be effectively predicted and needle point reach
Position solves the limitation that clinical staight needle punctures, widens the scope of application of medicine puncture, include referring to FIG. 1-2, shank 210,
Needle core 200 punctures staight needle 300, thicker 3D printing substrate 400 and slim 3D printing substrate 500；
Referring to Fig. 1, the top contact of shank cap 100 has needle core cap 110, specifically, the bottom one of shank cap 100
Body formed to be connected with shank 210, the circumferential inner wall of shank 210 contacts needle core 200, and the top of needle core 200, which is integrally formed, to be connected with
Needle core cap 110；
Referring to Fig. 1, the outer circumferential walls and shank cap 100 of needle core 200 are flexibly connected, specifically, needle core 200 runs through
The circumferential inner wall of shank 210, and the bottom of needle core cap 110 is contacted with the top of shank cap 100, shank 210 is " C " shape, is taken from
One section of radius value circumference, i.e., entire shank 210 only belong to the crooked radian of the same radius value, and shank 210 cannot have
The radian of two or more different radii value, also cannot be the serpentine with same radius value radian, and the length of shank 210 is answered
Less than circumference 1/4, needle core 200 has consistent crooked radian identical as shank 210, and shank 210 should have certain hardness, becomes
Shape is small, will not deform in the case where operating compared with great dynamics；
Referring to Fig. 1-2, the other parts of crooked needle, including shank cap 100 or handle, needle core cap 110, shank are punctured
The structure of the other aspects such as point, needle core tip, cutting groove can use market for different clinical purposes without particular/special requirement
Upper visible various designs can design multiple and different length for the puncture crooked needle of the same radius value, especially large radius value
The shank 210 of degree constitutes puncture crooked needle suit, to adapt to the target lesion of different depth, for the target lesion of same depth,
The crooked needle that multiple and different radius value shanks 210 can also be designed constitutes a puncture crooked needle suit, to be suitable for the target of different situations
Lesion, or different puncture crooked needles and different puncture staight needles form one together and wear suitable for most of the universal of target lesion
Pricker suit；
Referring to Fig. 2, the circumferential inner wall of thicker 3D printing substrate 400 and slim 3D printing substrate 500 and puncture are straight
Needle 300 and the outer circumferential walls contact for puncturing crooked needle, specifically, the inside of thicker 3D printing substrate 400, which is integrally formed, is connected with thickness
Type staight needle puncture channel 410 and thicker crooked needle puncture channel 420, the top of slim 3D printing substrate 500, which is integrally formed, to be connected with
There is thin straight pin puncture channel 510 in staight needle puncture post 530 and crooked needle puncture post 540,530 center of staight needle puncture post, and crooked needle punctures
There are slim crooked needle puncture channel 520, the circumference of thicker staight needle puncture channel 410 and thin straight pin puncture channel 510 in 540 center of column
Inner wall contact, which has, punctures staight needle 300, the circumferential inner wall contact of thicker crooked needle puncture channel 420 and slim crooked needle puncture channel 520
There is puncture crooked needle, according to the requirement that medicine puncture mesh and inserting needle path are pre-designed, template can only have 1 puncture channel,
Can have multiple puncture channels simultaneously, can carry out crooked needle or staight needle puncture, wearing for crooked needle and staight needle can also be carried out simultaneously
Thorn, can go the puncture of the same needle angle, can also carry out the puncture of multiple and different needle angles simultaneously, staight needle is not
Necessity, and crooked needle and staight needle, because of actual conditions difference, the positional relationship that also do not fix is (to introduce convenient for unified, in legend
In do not distinguish)；
Referring to Fig. 2, the top of slim 3D printing substrate 500 is contacted with the bottom of thicker 3D printing substrate 400, tool
Body, the bottom of thicker 3D printing substrate 400 is movably equipped with slim 3D printing substrate 500, the top of slim 3D printing substrate 500
Integrated molding is connected with thin straight pin puncture channel 510 and slim crooked needle puncture channel 520,420 He of thicker crooked needle puncture channel
The crooked radian of slim crooked needle puncture channel 520 is consistent with the crooked radian of shank 210 (crooked needle), thicker crooked needle puncture channel
420 and slim crooked needle puncture channel 520 length > 2cm, shank 210 can be reduced most possibly in this way in puncture channel
Oscillatory, to reduce needle track offset ground probability and degrees of offset, be conducive to calculate to a nicety needle track path and judge that needle point will
The position to be reached, thicker crooked needle puncture channel 420 and slim 520 internal diameter of crooked needle puncture channel are consistent with the outer diameter of shank 210,
Its medium-thick type 3D printing substrate 400 and slim 3D printing substrate 500 need to require to be used separately (for just according to different punctures
Introduce in unified, do not distinguished in legend), puncture channel can be positioned at certain thickness thicker 3D printing substrate
400, it may also be on slim 3D printing substrate 500, the constituent material of substrate and puncture channel wall, there is certain hardness, become
Shape is small, even if substrate will not deformation occurs and is not bonded with body surface, and puncture channel will not be sent out when being punctured compared with great dynamics
Raw deformation and lead to that inserting needle resistance increases or needle track offset, 3D printing navigation template should also routinely have positioning device and fixed dress
Set, can using the positioning of visible various 3D printing templates and fixing means on the market, 3D printing navigation template other parts,
Including base main body structure, accessory structure etc., no particular/special requirement can be using visible various 3D printing template moulds on the market
Formula.
The present invention also provides a kind of piercing methods of medical crooked needle based on 3D printing navigation template:
The piercing method for being somebody's turn to do the medical crooked needle based on 3D printing navigation template referring to FIG. 1-2, includes the following steps:
S1: image scan: before puncture procedure, 3-dimensional image must be carried out and scan such as CT, MR, PET/CT, obtain machine
Body 3-dimensional image data, position to the intracorporal target lesion of machine and its are accurately commented with the relationship of peripheral organs, blood vessel, nerve
Estimate, and determines which organ or tissue needs to avoid damage in puncturing；
S2: design needle track: the purpose punctured according to medicine designs reasonable needle track path on 3-dimensional image, must avoid
The vitals or tissue that should not be damaged first consider that design punctures the needle track path of staight needle 300, when the needle track for puncturing staight needle 300
When path is unable to satisfy operational requirements because limited, considers further that the needle track path of design crooked needle, determine optimal radius value, inserting needle
The depth of angle and inserting needle may be designed as having a plurality of needle track path simultaneously when there is clinic to need, can have simultaneously staight needle and
The needle track path of crooked needle, can also be simultaneously there are many different needle angles；
S3: Design Navigation template: by body 3-dimensional image data, the thicker 3D printing substrate being bonded with body surface is designed
400 or slim 3D printing substrate 500, and determine positioning device, fixed device, pass through the three-dimensional in designed needle track path
Data design corresponding puncture channel, are combined into the whole three-dimensional structure data of 3D printing navigation template；
S4:3D printing: above-mentioned data are imported into 3D printer, corresponding printed material is selected, phase is obtained by 3D printing
The 3D printing navigation template answered is to get thicker 3D printing substrate 400 or slim 3D printing substrate 500；
S5: positioning and fixed: when clinical manipulation, first passing through positioning device and determines thicker 3D printing substrate 400 or slim
3D printing substrate 500 makes thicker 3D printing substrate 400 or slim in the corresponding position of subject's body surface, and by fixed device
3D printing substrate 500 is firmly secured to body surface corresponding position；
S6: puncturing and inserting needle: according to the inserting needle path designed in advance, selecting corresponding radian and the crooked needle of length 200 or phase
The puncture staight needle 300 for answering length is worn respectively along corresponding on thicker 3D printing substrate 400 or slim 3D printing substrate 500
Transfixation road inserting needle, and its needle point is advanced to expected depth, during which whether can be shifted by image scan assessment needle track,
Whether syringe needle reaches predetermined position, after syringe needle reaches target lesion, further according to the purpose that medicine punctures, completes subsequent medical procedure
Such as biopsy, seeds implanted or drug injection.
Embodiment
Now made a kind of medical crooked needle and certain market often carries out Experimental Comparison with puncture needle through the invention, tests
Journey is as follows；
1, using surgery simulation mold, the lesions position for being not easy to carry out straight line puncture is determined, is respectively adopted two
The different piercing method of kind carries out 20 punctures, and calculates to the offset number of puncture.
2, using surgery simulation mold, the lesions position for being not easy to carry out straight line puncture is determined, is respectively adopted two
The different piercing method of kind carries out 20 punctures, determines and punctures as a result, and calculating to the precision of puncture.
3, using surgery simulation mold, the lesions position for being not easy to carry out straight line puncture is determined, is respectively adopted two
The different piercing method of kind carries out ten punctures, and records to the total time of puncture.
Test data is as follows:
| Offset number/time | Precision/% | Convenience/S | |
| Embodiment 1 | 0 | 100 | 350 |
| Reinspection | 1 | 95 | 352 |
| Comparative example 1 | 9 | 55 | 620 |
Through Experimental comparison, the medical crooked needle based on 3D printing navigation template made by the present invention, have it is good precisely
Degree and convenience can easily determine needle angle when crooked needle punctures, firm maintenance needle angle, be effectively predicted very much
The position that inserting needle path and needle point will reach solves the limitation that clinical staight needle punctures, widens the applicable model of medicine puncture
It encloses.
In summary, medical crooked needle piercing method of this kind based on 3D printing navigation template, can make needle track path
Certain important organ or tissues are effectively avoided, needle point is made smoothly to reach target lesion, to make up the limitation of staight needle puncture, energy
Enough probabilities for greatly reducing needle track offset in crooked needle puncture process solve what crooked needle punctured using 3D printing navigation template technology
Technological deficiency reduces needle track offset probability, improves puncture accuracy, improves operation convenience, punctures crooked needle in clinical practice
It is upper that there is stronger feasibility, to solve the limitation of staight needle puncture, increase the scope of application that medicine punctures, repeats shadow for reducing
As the number of scanning, the time of contact of ionising radiation is reduced.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of medical crooked needle, it is characterised in that: including shank (210) and needle core (200), the top one of the shank (210)
Body formed to be connected with shank cap (100), the circumferential inner wall of the shank (210) contacts the needle core (200), the needle core
(200) top is integrally formed and is connected with needle core cap (110), and the needle core (200) is in the circumference of the shank (210)
Wall, and the bottom of the needle core cap (110) is contacted with the top of the shank cap (100), the shank (210) is " C " shape, is cut
From one section of radius value circumference, i.e., the described shank (210) only belongs to the crooked radian of the same radius value, the shank
(210) radian that cannot have two or more different radii value, also cannot be the serpentine with same radius value radian, institute
The length for stating shank (210) should be less than circumference 1/4, and the needle core (200) has consistent bending identical as the shank (210)
Radian.
2. a kind of 3D printing navigation template, it is characterised in that: including thicker 3D printing substrate (400) and slim 3D printing substrate
(500), the inside of the thicker 3D printing substrate (400) is integrally formed and is connected with thicker staight needle puncture channel (410) and thicker
Crooked needle puncture channel (420), the top of the slim 3D printing substrate (500), which is integrally formed, is connected with staight needle puncture post (530)
Thin straight pin puncture channel (510), the crooked needle are equipped with the inside of crooked needle puncture post (540), the staight needle puncture post (530)
The inside of puncture post (540) is equipped with slim crooked needle puncture channel (520), the thicker staight needle puncture channel (410) and thin straight
The circumferential inner wall contact in pin puncture channel (510) has puncture staight needle (300), the thicker crooked needle puncture channel (420) and slim
The circumferential inner wall contact of crooked needle puncture channel (520) has shank (210), the thicker crooked needle puncture channel (420) and slim song
The crooked radian in pin puncture channel (520) is consistent with the crooked radian of the shank (210), the thicker crooked needle puncture channel
(420) it is worn with length > 2cm of slim crooked needle puncture channel (520), the thicker crooked needle puncture channel (420) and slim crooked needle
Transfixation road (520) internal diameter is consistent with the outer diameter of the shank (210).
3. a kind of piercing method of such as medical crooked needle of any of claims 1-2 based on 3D printing navigation template,
It is characterized by: the piercing method for being somebody's turn to do the medical crooked needle based on 3D printing navigation template includes the following steps:
S1: image scan: before puncture procedure, 3-dimensional image must be carried out and scan such as CT, MR, PET/CT, obtain body three
Image data is tieed up, the position to the intracorporal target lesion of machine and its relationship progress accurate evaluation with peripheral organs, blood vessel, nerve,
And determine which organ or tissue needs to avoid damage in puncturing；
S2: design needle track: the purpose punctured according to medicine designs reasonable needle track path on 3-dimensional image, must avoid not answering
The vitals or tissue of damage first consider the design needle track path for puncturing staight needle (300), when the puncture staight needle
(300) it when needle track path is unable to satisfy operational requirements because limited, considers further that the needle track path of design crooked needle, determines optimal
The depth of radius value, needle angle and inserting needle may be designed as having a plurality of needle track path simultaneously when there is clinic to need, can be with
There is the needle track path of staight needle and crooked needle simultaneously, it can also there are many different needle angles simultaneously；
S3: Design Navigation template: by body 3-dimensional image data, the thicker 3D printing substrate being bonded with body surface is designed
(400) or the slim 3D printing substrate (500), and positioning device, fixed device are determined, passes through designed needle track road
The three-dimensional data of diameter designs corresponding puncture channel, is combined into the whole three-dimensional structure data of 3D printing navigation template；
S4:3D printing: importing 3D printer for above-mentioned data, select corresponding printed material, is obtained by 3D printing corresponding
3D printing navigation template is to get the thicker 3D printing substrate (400) or the slim 3D printing substrate (500)；
S5: positioning and fixed: when clinical manipulation, first passing through positioning device and determines the thicker 3D printing substrate (400) or institute
Slim 3D printing substrate (500) is stated in the corresponding position of subject's body surface, and the thicker 3D printing base is made by fixed device
Plate (400) or the slim 3D printing substrate (500) are firmly secured to body surface corresponding position；
S6: puncturing and inserting needle: according to the inserting needle path designed in advance, selecting the crooked needle or corresponding long of corresponding radian and length
The puncture staight needle (300) of degree, respectively along the thicker 3D printing substrate (400) or the slim 3D printing substrate
(500) corresponding puncture channel inserting needle on, and its needle point is advanced to expected depth, during which needle can be assessed by image scan
Whether road shifts, whether syringe needle reaches predetermined position, when syringe needle reach target lesion after, further according to medicine puncture purpose,
Complete subsequent medical procedure such as biopsy, seeds implanted or drug injection etc..
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| CN201910513761.XA CN110151273A (en) | 2019-06-14 | 2019-06-14 | A kind of medical crooked needle piercing method based on 3D printing navigation template |
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| CN201910513761.XA CN110151273A (en) | 2019-06-14 | 2019-06-14 | A kind of medical crooked needle piercing method based on 3D printing navigation template |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116725640A (en) * | 2023-06-20 | 2023-09-12 | 山东卓业医疗科技有限公司 | Construction method of body puncture printing template |
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Application publication date: 20190823 |