CN117958926A - CT puncture guiding and positioning device and system - Google Patents
CT puncture guiding and positioning device and system Download PDFInfo
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- CN117958926A CN117958926A CN202410287333.0A CN202410287333A CN117958926A CN 117958926 A CN117958926 A CN 117958926A CN 202410287333 A CN202410287333 A CN 202410287333A CN 117958926 A CN117958926 A CN 117958926A
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- 210000003484 anatomy Anatomy 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 3
- 239000003550 marker Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 230000001902 propagating effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 238000002591 computed tomography Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000002679 ablation Methods 0.000 description 2
- 238000001574 biopsy Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010330 laser marking Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
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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
- A61B17/3403—Needle locating or guiding means
-
- 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
- A61B90/10—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 for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/11—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 for stereotaxic surgery, e.g. frame-based stereotaxis with guides for needles or instruments, e.g. arcuate slides or ball joints
- A61B90/13—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 for stereotaxic surgery, e.g. frame-based stereotaxis with guides for needles or instruments, e.g. arcuate slides or ball joints guided by light, e.g. laser pointers
-
- 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
- A61B17/3403—Needle locating or guiding means
- A61B2017/3405—Needle locating or guiding means using mechanical guide means
-
- 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
- A61B90/10—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 for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B2090/101—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 for stereotaxic surgery, e.g. frame-based stereotaxis for stereotaxic radiosurgery
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention discloses a CT puncture guiding and positioning device and a system, wherein the device comprises: side guide rails and guide bars; the two side guide rails are arranged in parallel, and a sliding seat is arranged on each side guide rail; the two ends of the guide rod are fixedly arranged on the sliding seat; the guide rod is provided with a sliding cylinder which can slide along a curved path; the sliding cylinder is provided with a laser emitting piece and a puncture needle guide piece; an upper mounting plate and a lower mounting plate are arranged on the circumference of the sliding cylinder; the laser emission part is arranged on the upper mounting plate, and the end part of the laser emission part is arranged towards the circle center of the guide rod; the puncture needle guide piece is arranged on the lower mounting plate, and the end part of the puncture needle guide piece is arranged towards the circle center of the guide rod; the invention can mark the needle-in position on the body surface of the patient by using the laser emitting part in the operation process, and the laser emitted by the laser emitting part can just pass through the puncture needle guide part by adjusting the relative positions of the laser emitting part and the puncture needle guide part, thereby providing accurate positioning and guiding for doctors and ensuring the success of the operation and the safety of the patient.
Description
Technical Field
The invention relates to the technical field of CT puncture auxiliary equipment, in particular to a CT puncture guiding and positioning device and a CT puncture guiding and positioning system.
Background
The CT scanning puncture technology is widely applied to medical examination and treatment, and provides accurate positioning and navigation for puncture operation by utilizing the high resolution and three-dimensional reconstruction capability of CT images. CT scanning puncture techniques may be used for diagnostic or therapeutic purposes, such as biopsy, drainage, ablation, implantation, etc. The CT scanning puncture technology has the advantages of simple operation, high safety, high success rate, fewer complications and the like.
In the prior art, in order to improve the accuracy of a needle insertion path in a puncturing process, a puncturing guiding device is generally adopted for positioning and guiding. The puncture guiding device is an auxiliary device fixed on the CT scanning bed, and can guide the optimal needle insertion path of the puncture needle according to the target position and the needle insertion angle on the CT image. The puncture guiding device can effectively reduce the needle inserting times, shorten the operation time, reduce the radiation dose and improve the puncture effect. However, in order to adapt to different puncture angles and puncture positions, the puncture guide is designed to be adjustable, and in the process of adjusting the position, the puncture guide needs to be repeatedly adjusted and penetrated into a puncture needle to verify the puncture angle and the position, and the like, so that the adjustment process is very complicated, takes a long time and is low in efficiency.
Therefore, it is necessary to provide a CT puncture guiding and positioning device and system, so as to solve the problem of poor matching efficiency of the laser marking and puncture guiding mechanism in the puncture operation process in the prior art.
Disclosure of Invention
The invention aims to provide a CT puncture guiding and positioning device and a CT puncture guiding and positioning system, which are used for solving the problems in the background art.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
In a first aspect of the present invention, there is provided a CT puncture guiding orientation device comprising: the two side guide rails are arranged in parallel; the side guide rails are respectively provided with a sliding seat; the guide rod is provided with an arc-shaped structure, and two ends of the guide rod are respectively fixedly arranged on the sliding seat so that the guide rod can slide along the side guide rail; the guide rod is provided with a sliding cylinder capable of sliding along a curved path, and the bending degree of the sliding cylinder is the same as that of the guide rod; wherein, the sliding cylinder is provided with a laser emitting part and a puncture needle guiding part; the upper mounting plate and the lower mounting plate are arranged on the periphery of the sliding cylinder and are opposite, the upper mounting plate is positioned above the lower mounting plate, and the upper mounting plate and the lower mounting plate are respectively perpendicular to the plane where the guide rod is positioned; the laser emitting part is arranged on the upper mounting plate, and the end part of the laser emitting part is arranged towards the center of the guide rod so that laser emitted by the laser emitting part propagates along the radial direction of the guide rod; the puncture needle guide piece has a hollow cylinder structure; the puncture needle guide piece is arranged on the lower mounting plate, the end part of the puncture needle guide piece is arranged towards the circle center of the guide rod, and laser emitted by the laser emitting piece can pass through the puncture needle guide piece when propagating along the radial direction of the guide rod.
Further, the upper mounting plate and the lower mounting plate are respectively and rotatably connected to the sliding cylinder through a vertically arranged rotating shaft; wherein, the pivot is located the middle part of mounting panel, lower mounting panel respectively.
Further, a linkage rod is detachably connected between the upper mounting plate and the lower mounting plate; wherein, set up the through-hole on the upper mounting plate, set up the counter bore on the lower mounting plate, the gangbar can run through the through-hole and insert the counter bore to make upper mounting plate, lower mounting plate can synchronous rotation.
Further, a return spring is arranged between the linkage rod and the sliding cylinder, and the return spring is lengthened when the relative movement between the linkage rod and the sliding cylinder is generated; wherein, both ends of the reset spring are respectively fixed on the middle part of the linkage rod and the peripheral wall of the sliding cylinder; the return spring can pull the linkage rod when contracting to make the upper mounting plate, lower mounting plate rotate to the position that is perpendicular to the plane that the guide rod is located.
Further, a sliding block which can be contacted with the guide rod is arranged on the sliding cylinder; wherein, the sliding blocks are circumferentially and equidistantly distributed on the inner ring side of the end face of the sliding cylinder; the sliding block protrudes towards the center of the sliding cylinder to form an arc-shaped protruding part.
Further, a sliding groove matched with the sliding block is arranged on the guide rod and used for limiting the sliding block to slide along the circumferential direction generated by the guide rod; wherein, the chute is provided with one along at least the circumference of the guide rod; the chute is arranged along the curved path of the guide bar.
Further, the radius of the boss is greater than the chute such that the boss portion is disposed within the chute.
Further, the slide cylinders are separated along a curved path to form an asymmetric upper cylinder and a asymmetric lower cylinder; wherein the upper cylinder is positioned above the lower cylinder; the upper cylinder is used for installing a laser emitting part, and the lower cylinder is used for installing a puncture needle guide part;
The arc length of the cross section of the lower cylinder is larger than that of the upper cylinder; the sliding blocks are symmetrically arranged on the inner ring side of the end face of the lower cylinder, and the center of the sliding blocks is flush with the central axis of the lower cylinder, so that the lower cylinder can be connected in the sliding groove through the sliding blocks in a sliding manner; the inner ring side of the end face of the upper cylinder is provided with a sliding block.
Further, the sliding cylinder, the upper cylinder and the lower cylinder are respectively provided with a positioning screw arranged towards the guide rod, so that the sliding cylinder, the upper cylinder and the lower cylinder can be fixed on the guide rod.
In a second aspect of the present invention, there is provided a CT puncture guiding and positioning system to which the CT puncture guiding and positioning device according to the first aspect of the present invention is applied, the system comprising:
the imaging module is used for acquiring anatomical structure information of a patient before and during operation and uploading the anatomical structure information to the display module;
the tracking module comprises a positioning instrument and a sensor, wherein the positioning instrument is used for tracking the marker or the sensor so as to acquire the position information of the surgical tool and the affected part of the patient; the sensor is fixed on the patient and the surgical tool and can be tracked by the positioning instrument;
And the display module is used for accurately reflecting the actual position of the surgical tool relative to the patient on the medical image.
Compared with the prior art, the invention has the following beneficial effects:
The puncture guiding and positioning device provided by the invention can help medical staff to mark the needle entering position on the body surface of a patient by using the laser emitting part to cooperate with the guidance of CT images in the puncture operation process, and the relative positions between the laser emitting part and the puncture needle guiding part are flexibly adjusted by the upper mounting plate and the lower mounting plate respectively, so that the coaxiality between the laser emitting part and the puncture needle guiding part is ensured, the laser emitted by the laser emitting part can just pass through the puncture needle guiding part, and the cooperation efficiency of the laser marking and puncture guiding mechanism in the puncture operation process is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
FIG. 1 is a schematic view of a CT puncture guiding and positioning device provided by the invention;
FIG. 2 is an enlarged view of I in FIG. 1;
FIG. 3 is a side view of a CT penetration guide positioning apparatus in accordance with another embodiment of the present invention;
FIG. 4 is an enlarged view of II in FIG. 3;
FIG. 5 is a schematic view of a guide rod according to another embodiment of the present invention;
FIG. 6 is a side cross-sectional view of a guide rod and slide in another embodiment of the present invention;
FIG. 7 is a side cross-sectional view of a guide rod and slide in another embodiment of the present invention;
FIG. 8 is a front cross-sectional view of the slide of FIG. 7;
FIG. 9 is a front view of a CT puncture guiding and positioning device according to another embodiment of the present invention;
FIG. 10 is an enlarged view of III in FIG. 9;
Fig. 11 is a side cross-sectional view of an upper and lower barrel mounted on a guide bar in another embodiment provided by the present invention.
Reference numerals in the drawings are respectively as follows:
1. A side rail; 11. a sliding seat; 2. a guide rod; 21. a slide cylinder; 211. a slide block; 212. a boss; 213. a chute; 21a, upper cylinder; 21b, lower cylinder; 22. a laser emitting member; 23. a needle guide; 24. an upper mounting plate; 241. a linkage rod; 242. a through hole; 243. countersink; 25. a lower mounting plate; 26. a rotating shaft; 27. a return spring; 28. and (5) positioning a screw.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-2, the present invention provides a CT puncture guiding and positioning device, comprising:
the side guide rails 1 are arranged in parallel with each other; the side guide rails 1 are respectively provided with a sliding seat 11;
The guide rod 2 is provided with an arc-shaped structure, and two ends of the guide rod 2 are respectively fixedly arranged on the sliding seat 11 so that the guide rod 2 can slide along the side guide rail 1; the guide rod 2 is provided with a sliding cylinder 21 which can slide along a bending path, and the bending degree of the sliding cylinder 21 is the same as that of the guide rod 2;
Wherein, the slide cylinder 21 is provided with a laser emitting part 22 and a puncture needle guiding part 23; the circumference of the sliding cylinder 21 is provided with an upper mounting plate 24 and a lower mounting plate 25 which are opposite, the upper mounting plate 24 is positioned above the lower mounting plate 25, and the upper mounting plate 24 and the lower mounting plate 25 are respectively perpendicular to the plane of the guide rod 2; the laser emitting part 22 is arranged on the upper mounting plate 24, and the end part of the laser emitting part 22 is arranged towards the center of the guide rod 2 so that laser emitted by the laser emitting part 22 propagates along the radial direction of the guide rod 2; the puncture needle guide 23 has a hollow cylindrical structure; the puncture needle guide 23 is provided on the lower mounting plate 25, and the end of the puncture needle guide 23 is disposed toward the center of the guide rod 2, so that the laser light emitted from the laser emitter 22 can pass through the puncture needle guide 23 when propagating along the radial direction of the guide rod 2.
The puncture guiding and positioning device provided by the invention can be applied to some puncture operations, such as tumor ablation, guiding biopsy and the like, the laser emitting part 22 can be used for marking the needle entering position on the body surface of a patient in the operation process, and the laser emitted by the laser emitting part 22 can just pass through the puncture needle guiding part 23 by adjusting the relative positions of the laser emitting part 22 and the puncture needle guiding part 23 and then puncture is carried out in the puncture needle guiding part 23 by using the puncture needle, so that accurate positioning and guiding are provided for doctors, the success of the operation and the safety of the patient are ensured, the traditional operation is prevented from depending on the experience and intuition of the doctors, and risks of inaccurate positioning, damage to surrounding tissues or organs and the like are reduced. Specifically, in the actual use process of the device, the side guide rails 1 are arranged on two sides of the CT scanning bed, a patient lies on the CT scanning bed so that the guide rod 2 spans over the body of the patient, and meanwhile, the relative position between the guide rod 2 and the body surface of the patient can be adjusted through the forward and backward sliding of the guide rod 2 on the side guide rails 1, so that the guide rod 2 can be positioned right above the affected part of the patient, and the medical staff can conveniently conduct the guiding and positioning operation of the puncture operation by using the laser emitting piece 22; on the other hand, in order to facilitate the determination of the needle insertion angle according to the guidance of the CT image, the guide rod 2 is generally marked with an angle scale of 0 ° -180 °, and each angle value can correspond to any position of the slide tube 21 on the guide rod 2, so that the laser energy emitted by the laser emitting element 22 provided on the slide tube 21 and the surface of the patient form a corresponding included angle, and the needle insertion angle of the puncture needle in the puncture needle guide 23 is determined by recording the laser incidence angle and the incidence position.
In the above embodiment, the upper mounting plate 24 and the lower mounting plate 25 are fixed on the slide 21, and in order to mark the most suitable puncture angle during the operation of the actual puncture operation, it is often necessary to adjust the relative position between the laser emitting member 22 and the puncture needle guiding member 23 at multiple angles to obtain a better coaxiality between the two, so that the laser can directly pass through the puncture needle guiding member 23, and the problem of inaccurate marking and positioning on the affected part of the patient when the medical staff performs the puncture operation guiding and positioning work by using the upper mounting plate 24 and the lower mounting plate 25 with poor angle adjustment range is avoided.
In order to solve the above-mentioned problems, please continue to refer to fig. 2, in the preferred embodiment provided by the present invention based on the above-mentioned embodiments, the upper mounting plate 24 and the lower mounting plate 25 are rotatably connected to the slide 21 through the vertically arranged rotating shafts 26, respectively;
the rotating shaft 26 is respectively arranged in the middle of the upper mounting plate 24 and the lower mounting plate 25.
More specifically, in order to facilitate adjustment of the relative position between the upper mounting plate 24 and the lower mounting plate 25, as shown in fig. 3 to 4, a link lever 241 is detachably connected between the upper mounting plate 24 and the lower mounting plate 25;
Wherein, the upper mounting plate 24 is provided with a through hole 242, the lower mounting plate 25 is provided with a counter bore 243, and the linkage rod 241 can penetrate through the through hole 242 and be inserted into the counter bore 243, so that the upper mounting plate 24 and the lower mounting plate 25 can synchronously rotate.
In this embodiment, through the rotational connection of the upper mounting plate 24 and the lower mounting plate 25, the degree of freedom of movement of the laser emitting element 22 and the puncture needle guide element 23 is improved, and a detachable linkage rod 241 is arranged between the upper mounting plate 24 and the lower mounting plate 25, so that the upper mounting plate 24 and the lower mounting plate 25 can be synchronously adjusted, the adjustment efficiency is improved, and meanwhile, the situation that the coaxiality of the upper laser emitting element 22 and the puncture needle guide element 23 is adjusted by repeatedly adjusting the upper mounting plate 24 and the lower mounting plate 25 can be avoided, and the error of the coaxiality is reduced; on the other hand, when the upper mounting plate 24 and the lower mounting plate 25 need to be independently adjusted, the linkage rod 241 can be pulled out in time, so that the degree of freedom of the upper mounting plate 24 or the lower mounting plate 25 is improved, and further, the accuracy of guiding and positioning of the puncture needle can be improved when medical staff prepares for operation in a puncture operation, and the difficulty of positioning and guiding of the puncture needle is reduced.
In the above embodiment, when the upper mounting plate 24 and the lower mounting plate 25 are rotated and adjusted during the preparation of the puncture operation, the upper mounting plate 24 and the lower mounting plate 25 are liable to be excessively rotated due to excessive external force, and after the device is used, the upper mounting plate 24 and the lower mounting plate 25 are difficult to return to zero and return to the initial angular positions, so that the coaxiality of the laser emitter 22 and the puncture needle guide 23 is liable to be poor, and the guiding and positioning of the next puncture operation will be affected.
In order to solve the above-mentioned problem, please continue to refer to fig. 4, in the preferred embodiment provided by the present invention based on the above-mentioned embodiment, a return spring 27 is provided between the linkage rod 241 and the slide cylinder 21, and the return spring 27 is elongated when the relative movement between the linkage rod 241 and the slide cylinder 21 occurs;
Wherein, both ends of the return spring 27 are respectively fixed on the middle part of the linkage rod 241 and the peripheral wall of the sliding cylinder 21;
the return spring 27 is capable of pulling the link lever 241 when contracted to rotate the upper and lower mounting plates 24, 25 to a position perpendicular to the plane of the guide lever 2.
In this embodiment, through the setting of reset spring 27 for form the linkage to upper mounting panel 24, lower mounting panel 25 after the gangbar 241 inserts, make upper mounting panel 24, lower mounting panel 25 can utilize reset spring 27's pulling force to carry out spacingly in the rotation process, prevent its excessive rotation, and reset spring 27 deformation resumes and reset upper mounting panel 24, lower mounting panel 25 to initial angle after puncture location direction is finished, avoid before the operation of next puncture goes on, upper mounting panel 24, the initial position of lower mounting panel 25 is not good and lead to laser emitter 22 and puncture needle guide 23's axiality not good, need additionally adjust the problem.
In the above embodiment, since the relative positions of the laser emitting member 22 and the puncture needle guide member 23 need to be adjusted by sliding the slide barrel 21 during the puncture operation, the slide barrel 21 generates serious friction between the side walls that contact with each other during sliding along the guide rod 2.
In order to solve the above problems, as shown in fig. 6, in a preferred embodiment of the present invention provided based on the above embodiment, a slider 211 capable of contacting with the guide bar 2 is provided on the slide cylinder 21;
Wherein a plurality of sliding blocks 211 are circumferentially equidistantly arranged on the inner ring side of the end face of the slide cylinder 21; the slider 211 protrudes toward the center of the slide cylinder 21 to form an arc-shaped boss 212.
In this embodiment, by providing the slider 211 between the slide cylinder 21 and the guide rod 2, friction generated during the sliding process of the slide cylinder 21 along the guide rod 2 can be reduced by the cambered surface structure of the boss 212 on the slider 211, so that abrasion of the inner wall surface of the slide cylinder 21 is reduced, smoothness of the slide cylinder 21 when adjusted on the guide rod 2 is improved, and durability of the slide cylinder 21 is also improved.
In the above embodiment, during the sliding process of the sliding tube 21 on the guide rod 2, the sliding tube 21 is easily biased in the circumferential direction relative to the guide rod 2 due to external force, so that the accurate positioning of the puncture needle is affected.
In order to solve the above problems, as shown in fig. 7 to 9, in the preferred embodiment provided by the present invention based on the above embodiment, the guide rod 2 is provided with a sliding groove 213 matched with the sliding block 211, and the sliding groove 213 is used for limiting the sliding of the sliding block 211 along the circumferential direction generated by the guide rod 2;
Wherein, the chute 213 is provided with one along at least the circumference of the guide bar 2; the slide groove 213 is provided along a curved path of the guide bar 2.
More specifically, the radius of the boss 212 is greater than the chute 213 such that the boss 212 is partially disposed within the chute 213.
In this embodiment, the sliding groove 213 provided on the guide rod 2 can limit the circumferential bias of the sliding tube 21, so as to improve the positioning accuracy of the puncture needle, and it should be noted that, since the sliding tube 21 provided by the invention is curved along the guide rod 2, when the sliding tube 21 is provided long enough, it is difficult to rotate around the guide rod 2 due to a certain curvature, which is equivalent to realizing the locking function in the circumferential direction; thus, the smaller the length of the slide drum 21 provided in the present embodiment, the larger the amplitude by which the slide drum 21 can rotate around the guide bar 2, and when the slide drum 21 is sufficiently small in length, it can rotate around the guide bar by one revolution.
In the above embodiment, the sliding cylinder 21 drives the laser emitting member 22 and the puncture needle guiding member 23 to perform angle adjustment while sliding on the guiding rod 2, but in the actual use process, the angles of the laser emitting member 22 and the puncture needle guiding member 23 cannot be adjusted independently, so that the flexibility of the device in the use process is greatly limited.
In order to solve the above problems, as shown in fig. 9 to 11, the present invention provides a preferred embodiment based on the above embodiment in which the slide cylinder 21 is divided along its curved path to form asymmetric upper and lower cylinders 21a and 21b;
Wherein the upper cylinder 21a is located above the lower cylinder 21 b; the upper cylinder 21a is used for mounting the laser emitter 22, and the lower cylinder 21b is used for mounting the puncture needle guide 23; the cross-sectional arc length of the lower cylinder 21b is larger than that of the upper cylinder 21a; the end surface inner ring side of the lower cylinder 21b is symmetrically provided with a sliding block 211, and the center of the sliding block 211 is flush with the central axis of the lower cylinder 21b, so that the lower cylinder 21b can be connected in the sliding groove 213 in a sliding way through the sliding block 211; a slider 211 is provided on the inner ring side of the end face of the upper cylinder 21 a.
In this embodiment, the sliding cylinder 21 is divided into the upper cylinder 21a and the lower cylinder 21b which are arranged up and down along the guide rod 2, so that the flexibility of the laser emitting part 22 and the puncture needle guide part 23 in the adjusting process is improved, and meanwhile, in order to facilitate the fixing of the lower cylinder 21b on the guide rod 2, the arc of the cross section of the lower cylinder 21b is longer than that of the upper cylinder 21a, so that the lower cylinder 21b can be clamped into the sliding groove 213 on the peripheral wall of the guide rod 2, and the lower cylinder 21b is prevented from sliding down in the sliding process along the guide rod 2 due to gravity.
In order to fix the laser emitting member 22 and the puncture needle guide member 23 at a specific angular position on the guide rod 2, as shown in fig. 11, in the preferred embodiment according to the present invention provided in the above embodiment, the slide cylinder 21, the upper cylinder 21a, and the lower cylinder 21b are provided with positioning screws 28 disposed toward the guide rod 2, respectively, so that the slide cylinder 21, the upper cylinder 21a, and the lower cylinder 21b can be fixed on the guide rod 2.
The invention also provides a CT puncture guiding and positioning system, which is applied with the CT puncture guiding and positioning device provided by any embodiment, and comprises:
the imaging module is used for acquiring anatomical structure information of a patient before and during operation and uploading the anatomical structure information to the display module;
the tracking module comprises a positioning instrument and a sensor, wherein the positioning instrument is used for tracking the marker or the sensor so as to acquire the position information of the surgical tool and the affected part of the patient; the sensor is fixed on the patient and the surgical tool and can be tracked by the positioning instrument;
And the display module is used for accurately reflecting the actual position of the surgical tool relative to the patient on the medical image.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this application will occur to those skilled in the art, and are intended to be within the spirit and scope of the application.
Claims (10)
1. A CT puncture guiding and positioning device, comprising:
The side guide rails (1), two side guide rails (1) are arranged in parallel;
sliding seats (11) are respectively arranged on the side guide rails (1);
the guide rod (2) is provided with an arc-shaped structure, and two ends of the guide rod (2) are respectively fixedly arranged on the sliding seat (11) so that the guide rod (2) can slide along the side guide rail (1);
a sliding cylinder (21) capable of sliding along a curved path of the guide rod (2) is arranged on the guide rod (2), and the bending degree of the sliding cylinder (21) is the same as that of the guide rod (2);
wherein, the sliding cylinder (21) is provided with a laser emitting part (22) and a puncture needle guiding part (23);
The circumference of the sliding cylinder (21) is provided with an upper mounting plate (24) and a lower mounting plate (25) which are opposite, the upper mounting plate (24) is positioned above the lower mounting plate (25), and the upper mounting plate (24) and the lower mounting plate (25) are respectively perpendicular to the plane where the guide rod (2) is positioned;
The laser emitting piece (22) is arranged on the upper mounting plate (24), and the end part of the laser emitting piece (22) is arranged towards the center of the guide rod (2) so that laser emitted by the laser emitting piece (22) propagates along the radial direction of the guide rod (2);
the puncture needle guide (23) has a hollow cylinder structure;
the puncture needle guide piece (23) is arranged on the lower mounting plate (25), the end part of the puncture needle guide piece (23) is arranged towards the center of the guide rod (2), and laser emitted by the laser emitting piece (22) can penetrate through the puncture needle guide piece (23) when propagating along the radial direction of the guide rod (2).
2. A CT puncture guiding and positioning device as set forth in claim 1, wherein,
The upper mounting plate (24) and the lower mounting plate (25) are respectively and rotatably connected to the sliding cylinder (21) through a rotating shaft (26) which is vertically arranged;
the rotating shaft (26) is respectively arranged in the middle of the upper mounting plate (24) and the lower mounting plate (25).
3. A CT puncture guiding and positioning device as set forth in claim 2, wherein,
A linkage rod (241) is detachably connected between the upper mounting plate (24) and the lower mounting plate (25);
the upper mounting plate (24) is provided with a through hole (242), the lower mounting plate (25) is provided with a counter bore (243), and the linkage rod (241) can penetrate through the through hole (242) and be inserted into the counter bore (243), so that the upper mounting plate (24) and the lower mounting plate (25) can synchronously rotate.
4. A CT puncture guiding and positioning device as set forth in claim 3, characterized in that,
A return spring (27) is arranged between the linkage rod (241) and the sliding cylinder (21), and the return spring (27) is lengthened when the relative motion between the linkage rod (241) and the sliding cylinder (21) is generated;
Wherein, both ends of the return spring (27) are respectively fixed on the middle part of the linkage rod (241) and the peripheral wall of the sliding cylinder (21);
The return spring (27) can pull the linkage rod (241) when being contracted, so that the upper mounting plate (24) and the lower mounting plate (25) can rotate to a position perpendicular to the plane of the guide rod (2).
5. A CT puncture guiding and positioning device as set forth in claim 1, wherein,
A sliding block (211) which can be contacted with the guide rod (2) is arranged on the sliding cylinder (21);
Wherein a plurality of sliding blocks (211) are circumferentially equidistantly distributed on the inner ring side of the end face of the sliding cylinder (21);
the sliding block (211) protrudes towards the center of the sliding cylinder (21) to form an arc-shaped protruding part (212).
6. A CT penetration guide positioning device as in claim 5, wherein,
The guide rod (2) is provided with a sliding groove (213) matched with the sliding block (211), and the sliding groove (213) is used for limiting the sliding block (211) to slide along the circumferential direction generated by the guide rod (2);
Wherein, the chute (213) is provided with one along at least the circumference of the guide rod (2);
The sliding groove (213) is arranged along the curved path of the guide rod (2).
7. A CT penetrating guide positioning device according to claim 6 wherein,
The radius of the protruding part (212) is larger than that of the sliding groove (213), so that the protruding part (212) is partially arranged in the sliding groove (213).
8. A CT penetration guide positioning device as in claim 7, wherein,
The sliding drums (21) are separated along a curved path to form an asymmetric upper drum (21 a) and a lower drum (21 b);
wherein the upper cylinder (21 a) is located above the lower cylinder (21 b);
The upper cylinder (21 a) is used for installing a laser emitting part (22), and the lower cylinder (21 b) is used for installing a puncture needle guide part (23);
the cross section arc length of the lower cylinder (21 b) is larger than that of the upper cylinder (21 a);
The sliding blocks (211) are symmetrically arranged on the inner ring side of the end face of the lower cylinder (21 b), and the center of the sliding blocks (211) is flush with the central axis of the lower cylinder (21 b), so that the lower cylinder (21 b) can be connected into the sliding groove (213) in a sliding manner through the sliding blocks (211);
the slide block (211) is arranged on the inner ring side of the end face of the upper cylinder (21 a).
9. A CT puncture guiding and positioning device as set forth in claim 4 or 8, characterized in that,
The sliding cylinder (21), the upper cylinder (21 a) and the lower cylinder (21 b) are respectively provided with a set screw (28) arranged towards the guide rod (2), so that the sliding cylinder (21), the upper cylinder (21 a) and the lower cylinder (21 b) can be fixed on the guide rod (2).
10. A CT puncture guiding and positioning system using the CT puncture guiding and positioning apparatus as set forth in claim 9, comprising:
the imaging module is used for acquiring anatomical structure information of a patient before and during operation and uploading the anatomical structure information to the display module;
The tracking module comprises a positioning instrument and a sensor, wherein the positioning instrument is used for tracking the marker or the sensor so as to acquire the position information of the surgical tool and the affected part of the patient; the sensor is fixed on the patient and the surgical tool and can be tracked by the positioning instrument;
And the display module is used for accurately reflecting the actual position of the surgical tool relative to the patient on the medical image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410287333.0A CN117958926A (en) | 2024-03-13 | 2024-03-13 | CT puncture guiding and positioning device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410287333.0A CN117958926A (en) | 2024-03-13 | 2024-03-13 | CT puncture guiding and positioning device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117958926A true CN117958926A (en) | 2024-05-03 |
Family
ID=90861173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410287333.0A Withdrawn CN117958926A (en) | 2024-03-13 | 2024-03-13 | CT puncture guiding and positioning device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117958926A (en) |
-
2024
- 2024-03-13 CN CN202410287333.0A patent/CN117958926A/en not_active Withdrawn
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20240503 |