CN209932740U - Automatic tumor positioning system oriented to nuclear magnetic resonance environment - Google Patents
Automatic tumor positioning system oriented to nuclear magnetic resonance environment Download PDFInfo
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- CN209932740U CN209932740U CN201822252267.6U CN201822252267U CN209932740U CN 209932740 U CN209932740 U CN 209932740U CN 201822252267 U CN201822252267 U CN 201822252267U CN 209932740 U CN209932740 U CN 209932740U
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Abstract
The utility model discloses an automatic tumor positioning system oriented to nuclear magnetic resonance environment, which comprises a supporting structure, a soft tissue clamping device and a positioning device, wherein the supporting structure consists of a bottom plate, a top plate, a supporting column and a handrail; the soft tissue clamping device is arranged on the top; the positioning device comprises a rotating module, an attitude adjusting module and a lifting module, wherein the rotating module is composed of a bottom connecting plate, a bearing inner fixing ring, a first ceramic bearing, a bearing outer fixing ring, a large rotary table, an optical encoder, an encoder connecting piece and a large rotary table cable sheath, the attitude adjusting module is composed of a second ceramic bearing, a third ceramic bearing, a fourth ceramic bearing, a fifth ceramic bearing, a top small rotary table and a bottom small rotary table, a supporting cylinder, a supporting plate, an upper plate and a small rotary table cable sheath, and the lifting module is composed of a spiral rod piece, a lifting plate, a cable sleeve frame, a needle seat and a puncture needle. The system can improve the precision and success rate of the particle implantation operation of doctors; can be used as an auxiliary device for biopsy and implantation of internal radiotherapy particles.
Description
Technical Field
The utility model relates to the field of medical equipment, belong to machinery and the criss-cross forward position subject in medical radiotherapy field, especially relate to a tumor automatic positioning system towards under the nuclear magnetic resonance environment.
Background
More sophisticated medical imaging techniques in recent years are ultrasound imaging (US), X-ray imaging (X-ray), Computed Tomography (CT) and Magnetic Resonance Imaging (MRI). Compared to other imaging techniques, magnetic resonance imaging can provide high-quality soft tissue contrast and clear anatomical details, and the absence of ionizing radiation plays an irreplaceable role, especially for examinations on some young patients or pregnant women. Due to the many advantages of mri, mri has become more and more widely used in medical applications.
In the treatment of body tumors, brachytherapy is gaining increasing importance as an important treatment modality. Radioactivity125I-particle implantation is increasingly used in clinical treatments and achieves very good therapeutic effects. Compared to conventional teletherapy, radiation therapy of the particle implantation type has many advantages: 1. the particles are accurately implanted into the tumor, so that radioactive damage of the radioactive nuclide to surrounding normal tissues is reduced, and permanent damage to tissues such as body surface skin caused by external irradiation is avoided. 2. Because the particles are permanently implanted into the tumor tissue, the irradiation field is fixed and can move along with the patient, the tumor tissue can be continuously injured, and the curative effect is more obvious. 3. The number of implanted particles can vary depending on the patient's particular situation, providing greater flexibility. By controlling the number of particles and the position of the particles, the target area is better surrounded, and more ideal radiation dose distribution is achieved, so that the complications are less. The precise implantation of the particles is crucial in treating tumors by using radioactive particle implantation in various hospitals, and the precise implantation of the particles is related to the dose distribution of a target region of the tumors and directly related to the internal radiotherapy curative effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides an automatic tumor positioning system oriented to the nuclear magnetic resonance environment, which can improve the precision and success rate of the particle implantation operation of doctors; the nuclear magnetic image is combined, the specific position of the tumor is displayed in real time, and the device can be used as an auxiliary device for biopsy and implantation of internal radiotherapy particles by a doctor, and can accurately implement corresponding examination and implantation of tumor radiotherapy particles. Effectively solves the problems of inaccurate judgment and more complications of the soft tissue lesion part in the surgical operation in the prior art.
The utility model aims at realizing through the following technical scheme:
an automatic tumor positioning system oriented to a nuclear magnetic resonance environment comprises a supporting structure, a soft tissue clamping device and a positioning device, wherein the supporting structure is composed of a bottom plate, a top plate, a supporting column and a handrail, the supporting column is placed between the bottom plate and the top plate, the top plate is of a curved surface structure which is attached to a curve of a human body when bending over, the lower surface of the bottom plate is of an arc-shaped structure and used for attaching to a magnetic resonance bed, and the handrail is arranged at the top of the upper surface of the bottom plate; the soft tissue clamping device is arranged on the top plate, and the positioning device is positioned below the soft tissue clamping device and fixed with the upper surface of the bottom plate;
the soft tissue clamping device consists of a circular framework and a hollow pipeline, fixing plates are uniformly distributed on the periphery of the framework, the lower surface of the framework is communicated with each other through the hollow pipeline to form a hemispherical reticular structure, a copper sulfate aqueous solution is filled in the hollow pipeline, a marking line for positioning is arranged on the upper surface of the framework, the position of the positioning device can be adjusted to enable the marking line to be superposed with two mutually vertical red cross lines emitted by a magnetic resonance apparatus, and the relationship between a coordinate system of the positioning device and a nuclear magnetic image coordinate system is established to complete the positioning process;
the positioning device comprises a rotating module, an attitude adjusting module and a lifting module, wherein the rotating module consists of a bottom connecting plate, a bearing inner fixing ring, a first ceramic bearing, a bearing outer fixing ring, a large turntable, an optical encoder, an encoder connecting piece and a large turntable cable sheath, the bottom connecting plate is fixed on a bottom plate, the large turntable cable sheath and the bearing inner fixing ring are fixed on the bottom connecting plate through screws, the bearing inner fixing ring and a first ceramic bearing inner ring, the large turntable and a first ceramic bearing outer ring are connected in an interference fit manner, the bearing outer fixing ring is fixed on the large turntable, the encoder connecting piece is fixed on the bearing outer fixing ring, a shell of the optical encoder is fixed on the encoder connecting piece through screws, and a shaft of the optical encoder is fixed at a round hole in the bearing inner fixing ring through a transition fit manner; the clockwise and anticlockwise rotation of the rotating module can be realized through the connection mode, and the rotating angle is fed back in real time through the optical encoder;
the posture adjusting module consists of a second ceramic bearing, a third ceramic bearing, a fourth ceramic bearing, a fifth ceramic bearing, a top small turntable, a bottom small turntable, a supporting cylinder, a supporting plate, an upper plate and a small turntable cable sheath, and the lifting module consists of a screw rod piece, a lifting plate, a cable sleeve frame, a needle seat and a puncture needle;
the small turntable cable sheath and the supporting plate are fixed on the large turntable, the spiral rod piece and the supporting cylinder are arranged between the bottom small turntable and the top small turntable, the upper plate is also arranged above the top small turntable, the inner ring and the outer ring of the second ceramic bearing are respectively fixed on the bottom small turntable and the large turntable, the inner ring and the outer ring of the third ceramic bearing are respectively fixed on the bottom end and the bottom small turntable of the spiral rod piece, the inner ring and the outer ring of the fourth ceramic bearing are respectively fixed on the top small turntable and the upper plate, the inner ring and the outer ring of the fifth ceramic bearing are respectively fixed on the top end of the spiral rod piece and the top small turntable, and two ends of the supporting cylinder are respectively fixed on the bottom small turntable and the top small turntable;
the top ends of the upper plate and the supporting plate are connected with each other through screws, the rope sleeve frame is connected with the two supporting cylinders through interference fit, a rope sleeve mounting hole used for fixing a rope sleeve is formed in the rope sleeve frame, a lifting plate center hole is provided with an internal thread matched and connected with the spiral rod piece, a through hole movably connected with the supporting cylinders is formed in the lifting plate, the lifting plate is driven to move up and down through rotation of the spiral rod piece, the lifting plate is fixedly connected with the needle seat through screws, and the through hole used for fixing a puncture needle is formed in the needle seat, so that the puncture needle can puncture and move along a fixed direction.
Furthermore, the hollow pipeline of the soft tissue clamping device is provided with warp and weft.
Furthermore, the soft tissue clamping device is placed at the central position of the top plate, and a headrest cushion, a chest cushion, a supporting cushion and a foot cushion are further arranged on the top plate.
Furthermore, all parts in the positioning device are manufactured by engineering plastics.
Furthermore, the concentration of the copper sulfate aqueous solution in the hollow pipeline is 1g/L,
compared with the prior art, the utility model discloses a beneficial effect that technical scheme brought is:
1. by adopting a topology and layout design method, the patient support structure is designed, so that the narrow magnetic resonance apparatus can accommodate the patient and the positioning device simultaneously in the scanning process, and meanwhile, enough space is reserved for the doctor to perform operations on two sides of the bed, the clinical requirements are met, and convenience is brought to the doctor for operation;
2. the utility model discloses can overcome the untimely difficult drawback of orbit planning of operation in-process formation of image effect, can alleviate the misery of disease at to a great extent, effectively reduce the operation time, make the operation process become simple easy operation, reduce the operation degree of difficulty, improve the operation precision, increase the operation success rate to improve patient's cure rate and quality of life greatly, and then can the wide application in clinical operation, weaken the injury of radiopharmaceutical to the doctor simultaneously.
3. To the tumour pathological change that the ultrasonic image inspection can not discover and the inspection discovery is nevertheless untouchable, the utility model discloses can exert unable substitutional effect, the utility model discloses an automatic positioning device under the nuclear-magnetic image guide, nuclear-magnetic resonance imaging can provide high-quality soft tissue contrast and clear anatomical structure detail, can inspect the tumour pathological change that the ultrasonic image inspection can not discover to through automatic positioning device's motion, can realize an all-round, multi-angle's puncture operation, make the pjncture needle can reach the any position of soft tissue. Therefore, the utility model has good social benefit and application prospect, and can promote the development of soft tissue minimally invasive surgery technology under the nuclear magnetic resonance environment to a certain extent.
4. The utility model has novel and convenient structure, can realize the separation of the driving motor part and the automatic positioning device through unique design, realize remote driving, improve the nuclear magnetic compatibility of the system, and can be applied to the nuclear magnetic resonance environment; the puncture process of all-round, multi-angle can be realized through unique structural design, only need the doctor handheld pjncture needle along fixed direction puncture can, make things convenient for clinical operation.
Drawings
Fig. 1 is a schematic structural view of a support structure.
Fig. 2 is a schematic structural view of a soft tissue gripping device.
Fig. 3-1 is a schematic view of the positioning device.
Fig. 3-2 is a schematic structural view of a rotating module in the positioning device.
Fig. 3-3 are schematic structural diagrams of the attitude adjusting module and the lifting module in the positioning device.
Fig. 4 is a schematic diagram of a lasso drive configuration.
Reference numerals: 1-supporting columns, 2-headrest pads, 3-top plates, 4-soft tissue clamping devices, 4-1-warps, 4-2-wefts, 4-3-marking lines, 4-4-hollow pipelines, 5-foot pads, 6-supporting pads, 7-bottom plates, 8-breast pads, 9-handrails, 10-bottom connecting plates, 11-large turntable cable sheaths, 12-bearing inner fixing rings, 13-large turntable, 14-first ceramic bearings, 15-bearing outer fixing rings, 16-optical encoders, 17-encoder connectors, 18-small turntable cable sheaths, 19-second ceramic bearings, 20-bottom small turntable, 21-third ceramic bearings, 22-spiral rod pieces, 23-supporting plates, 24-cable sleeve frame, 25-supporting cylinder, 26-upper plate, 27-fourth ceramic bearing, 28-top small turntable, 29-fifth ceramic bearing, 30-puncture needle, 31-lifting plate and 32-needle seat
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model discloses whole outward appearance structure chart of automatic positioning system is shown in fig. 1, install 6 support columns 1 on bottom plate 7 through interference fit, install roof 3 and handrail 9 through interference fit afterwards, later place soft tissue clamping device 4 in the central point of roof puts the department, and assigned position department on the roof puts headrest pad 2, thorax mat 8, supporting pad 6 and callus on the sole 5, positioner fixes on bottom plate 7 through the mode at fixed position department mounting screw, accomplish whole positioner's assembly.
In this embodiment, the top plate 3 is uniquely curved to fit the human body well, so that the patient can lie on the top of the top plate 3 in a comfortable posture. Compared with other tumor positioning devices, for example, for breast tumors, patients only need to place breast soft tissues with focuses in the soft tissue clamping device, and the healthy breast soft tissues are placed in the special spongy cushion, so that doctors can be helped to realize an all-around and multi-angle puncture process, and the puncture needle point can reach any position of the soft tissues, so that an accurate puncture operation process is realized; the supporting column 1 is arranged between the top plate and the bottom plate and is used for supporting the weight of the top plate and a patient lying prone on the top plate, and the supporting column is arranged at a specific position between the top plate and the bottom plate according to a statics analysis result, so that a good supporting function is realized, and meanwhile, the deformation of the top plate can be minimized; the bottom plate 7 is of a left-right symmetrical structure, and the arc design of the bottom surface of the bottom plate can be well attached to the magnetic resonance bed, so that the bottom plate can be well fixed on the magnetic resonance bed, the relative static state of the bottom plate and the magnetic resonance bed can be always kept in the moving process of the magnetic resonance bed, and errors caused by the movement of the magnetic resonance bed are effectively avoided; the handrail is designed in a unique curve, so that a patient can hold the handrail in a comfortable posture to carry out the operation process in the operation process.
As shown in fig. 2, the soft tissue holding device 4 is manufactured by 3D printing, and has complete nuclear magnetic compatibility. According to the size difference of each soft tissue, a series of soft tissue clamping devices with different specifications are designed, so that the soft tissues are clamped and fixed, and the movement and deformation of the soft tissues in the process of a particle implantation operation or a biopsy operation are reduced. According to the principle of magnetic resonance imaging, MRI is a digital image created by exciting a substance containing nuclei with non-zero spins in a magnetic field with radio frequency pulses to cause nuclear magnetic resonance, collecting magnetic resonance signals with an induction coil, and processing the signals according to a certain mathematical method. The common 3D printing material cannot be developed on a nuclear magnetic image, and the soft tissue clamping device has the innovation point that the soft tissue clamping device capable of being developed in the nuclear magnetic image is designed. The soft tissue clamping device 4 is internally provided with hollow pipelines 4-4, the hollow pipelines 4-4 are mutually connected and communicated, a copper sulfate aqueous solution is filled in the hollow pipelines 4-4, and the concentration of the solution is 1g/L, so that the whole clamping device is formed. A marking line 4-3 for positioning is designed on the upper surface of the circular ring-shaped framework of the soft tissue clamping device 4, the position of the positioning device is adjusted to enable the calibration line to be superposed with two mutually perpendicular red cross lines emitted by a magnetic resonance instrument, the relation between a coordinate system of the positioning device and a coordinate system of a nuclear magnetic image is established, and the positioning process is completed. In order to enable a doctor to accurately position the tumor position, a certain number of warps 4-1 and wefts 4-2 are further arranged in the soft tissue clamping device 4, and the relative position of the clamping device and the soft tissue tumor can be accurately positioned through the real-time displayed warp and weft information of the clamping device in the nuclear magnetic image, so that the focus position can be accurately positioned, the diagnosis and treatment accuracy is improved, and the accurate particle implantation operation process is realized.
The internal structure of the positioning device is as shown in fig. 3-1 to 3-3, a bottom connecting plate 10 is fixed on a bottom plate 7 through screw connection, a large rotary table cable sheath 11 and a bearing inner fixing ring 12 are fixed on the bottom connecting plate 10 through screw connection, the bearing inner fixing ring 12 and a first ceramic bearing 14 inner ring are connected through interference fit, a large rotary table 13 and a first ceramic bearing 14 outer ring are connected through interference fit, a bearing outer fixing ring 15 is fixed on the large rotary table 13 through screw connection, an encoder connecting piece 17 is fixed on the bearing outer fixing ring 15 through screw connection, a shell of an optical encoder 16 is fixed on the encoder connecting piece 17 through screw connection, and a shaft of the optical encoder 16 is fixed at a round hole inside the bearing inner fixing ring 12 through transition fit; the clockwise and anticlockwise rotation of the rotating module is realized through the connecting mode, and the rotating angle is fed back in real time through the encoder.
The small turntable cable sheath 18 and the supporting plate 23 are fixedly connected on the large turntable 13 through screws, the inner ring and the outer ring of the second ceramic bearing 19 are respectively fixed on the bottom small turntable 20 and the large turntable 13 through interference fit, the inner ring and the outer ring of the third ceramic bearing 21 are respectively fixed on the bottom end of the screw rod piece 22 and the bottom small turntable 20 through interference fit, two ends of the supporting cylinder 25 are fixed on the bottom small turntable 20 and the top small turntable 28 through interference fit, the inner ring and the outer ring of the fourth ceramic bearing 27 are respectively fixed on the top small turntable 28 and the upper plate 26 through interference fit, and the inner ring and the outer ring of the fifth ceramic bearing 29 are respectively fixed on the top end of the screw rod piece 22 and the top small turntable 28; the adjustment of the local posture is realized through the rotation of the small turntable; the upper plate 26 and the support plate 23 are tightly connected by screws.
The rope sleeve frame 24 is connected with the two supporting cylinders 25 through interference fit, a rope sleeve mounting hole used for fixing a rope sleeve is formed in the rope sleeve frame 24, an internal thread matched and connected with the spiral rod piece is formed in a central hole of the lifting plate 31, the lifting plate 31 is provided with two through holes which can be smoothly connected with the two supporting cylinders 25 through clearance fit, and therefore the lifting plate 31 can be driven to move up and down through rotation of the spiral rod piece 22. The lifting plate 31 is fixedly connected with the needle seat 32 through screws, a through hole for fixing the puncture needle 30 is designed on the needle seat 32, and a doctor can hold the puncture needle 30 and carry out the particle implantation operation along the fixing direction of the needle seat 32. The precise positioning task of the tumor is realized by the rotation of the large rotating disc 13 and the small rotating disc 20 at the bottom and the up-and-down translation of the lifting plate 31.
As shown in figure 4, the lasso enters from a lasso inlet sheath of the turntable, winds along the outer surface of the turntable, exits from a lasso outlet sheath of the turntable, and winds on a motor shaft at the other two ends of the lasso, so that the rotation of the motor drives the rotation of the turntable through the lasso drive. The driving mode of the spiral rod 22 is, as shown in fig. 4, the lasso enters from the lasso inlet of the lasso frame 24, winds along the lower end of the spiral rod 22, exits from the lasso outlet of the lasso frame 24, and the other two ends of the lasso wind around the motor shaft, so that the rotation of the motor drives the rotation of the spiral rod through the lasso driving, and further drives the lifting plate 31 to move up and down. The lasso driving mode has the advantages of high precision, good driving linearity, adjustable torque and the like, and can also realize that a motor power system is far away from an imaging area of a nuclear magnetic resonance instrument, thereby reducing the influence of metal on artifact in imaging of the magnetic resonance instrument and improving the definition of images of the magnetic resonance instrument.
In particular, in the realization of radioactive particles125In the implantation or soft tissue biopsy minimally invasive surgery treatment process, firstly, a soft tissue clamping device is required to be placed on a magnetic resonance bed, and the marking line and a magnetic resonance instrument are used for calibration, so that the positioning process is completed. The patient is then required to be held in a prone position on the top plate by a specially made sponge pad and the soft tissue in which the lesion is located is placed in the holding device. Then the patient is scanned by magnetic resonance, the target area of the tumor is defined, and the position of the focus is determined. The utility model discloses a positioner software judges and carries out planning in advance to the pjncture needle orbit that pierces the tumor area through the longitude and latitude line position to holding the device in the nuclear-magnetism image to confirm the angle of piercing, the position of pjncture needle, make positioner autogiration to fixed position department under the drive of motor, then by the manual particle implantation operation of accomplishing of doctor.
In particular, in terms of materials, considering that a magnetic resonance instrument can generate a high-strength magnetic field in the use process, any ferromagnetic and paramagnetic material can generate great interference on imaging, and the image is deformed, so that all parts of the positioning device are processed and manufactured by engineering plastics; in terms of space structure, the space limitation requirement of the magnetic resonance apparatus is satisfied in the design requirement of the whole structure in consideration of the small inner diameter size of the closed magnetic resonance apparatus, which is about 600 mm.
To sum up, the utility model discloses positioning system can realize the automatic positioning function to the tumour completely to leave sufficient space and time in the both sides of bed for the manual completion particle implantation operation process of doctor. The patient supporting structure can fix the body position of the patient, and errors caused by the movement of the body of the patient in the operation process are avoided; the soft tissue clamping device can well fix the soft tissue, reduce the deformation of the soft tissue and accurately position the tumor position in the nuclear magnetic image; the positioning device can automatically rotate to the optimal position where the tumor can be punctured according to the nuclear magnetic image feedback information, so that a doctor can conveniently perform the next operation.
The present invention is not limited to the above-described embodiments. The above description of the embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above embodiments are merely illustrative and not restrictive. Without departing from the spirit of the invention and the scope of the appended claims, the person skilled in the art can make many changes in form and detail within the teaching of the invention.
Claims (5)
1. An automatic tumor positioning system oriented to a nuclear magnetic resonance environment is characterized by comprising a supporting structure, a soft tissue clamping device and a positioning device, wherein the supporting structure is composed of a bottom plate, a top plate, a supporting column and a handrail, the supporting column is placed between the bottom plate and the top plate, the top plate is of a curved surface structure which is attached to a curve of a human body when bending over, the lower surface of the bottom plate is of an arc-shaped structure and used for being attached to a magnetic resonance bed, and the handrail is arranged at the top of the upper surface of the bottom plate; the soft tissue clamping device is arranged on the top plate, and the positioning device is positioned below the soft tissue clamping device and fixed with the upper surface of the bottom plate;
the soft tissue clamping device consists of a circular framework and a hollow pipeline, fixing plates are uniformly distributed on the periphery of the framework, the lower surface of the framework is communicated with each other through the hollow pipeline to form a hemispherical reticular structure, a copper sulfate aqueous solution is filled in the hollow pipeline, a marking line for positioning is arranged on the upper surface of the framework, the position of the positioning device can be adjusted to enable the marking line to be superposed with two mutually vertical red cross lines emitted by a magnetic resonance apparatus, and the relationship between a coordinate system of the positioning device and a nuclear magnetic image coordinate system is established to complete the positioning process;
the positioning device comprises a rotating module, an attitude adjusting module and a lifting module, wherein the rotating module consists of a bottom connecting plate, a bearing inner fixing ring, a first ceramic bearing, a bearing outer fixing ring, a large turntable, an optical encoder, an encoder connecting piece and a large turntable cable sheath, the bottom connecting plate is fixed on a bottom plate, the large turntable cable sheath and the bearing inner fixing ring are fixed on the bottom connecting plate through screws, the bearing inner fixing ring and a first ceramic bearing inner ring, the large turntable and a first ceramic bearing outer ring are connected in an interference fit manner, the bearing outer fixing ring is fixed on the large turntable, the encoder connecting piece is fixed on the bearing outer fixing ring, a shell of the optical encoder is fixed on the encoder connecting piece through screws, and a shaft of the optical encoder is fixed at a round hole in the bearing inner fixing ring through a transition fit manner; the clockwise and anticlockwise rotation of the rotating module can be realized through the connection mode, and the rotating angle is fed back in real time through the optical encoder;
the posture adjusting module consists of a second ceramic bearing, a third ceramic bearing, a fourth ceramic bearing, a fifth ceramic bearing, a top small turntable, a bottom small turntable, a supporting cylinder, a supporting plate, an upper plate and a small turntable cable sheath, and the lifting module consists of a screw rod piece, a lifting plate, a cable sleeve frame, a needle seat and a puncture needle;
the small turntable cable sheath and the supporting plate are fixed on the large turntable, the spiral rod piece and the supporting cylinder are arranged between the bottom small turntable and the top small turntable, the upper plate is also arranged above the top small turntable, the inner ring and the outer ring of the second ceramic bearing are respectively fixed on the bottom small turntable and the large turntable, the inner ring and the outer ring of the third ceramic bearing are respectively fixed on the bottom end and the bottom small turntable of the spiral rod piece, the inner ring and the outer ring of the fourth ceramic bearing are respectively fixed on the top small turntable and the upper plate, the inner ring and the outer ring of the fifth ceramic bearing are respectively fixed on the top end of the spiral rod piece and the top small turntable, and two ends of the supporting cylinder are respectively fixed on the bottom small turntable and the top small turntable;
the top ends of the upper plate and the supporting plate are connected with each other through screws, the rope sleeve frame is connected with the two supporting cylinders through interference fit, a rope sleeve mounting hole used for fixing a rope sleeve is formed in the rope sleeve frame, a lifting plate center hole is provided with an internal thread matched and connected with the spiral rod piece, a through hole movably connected with the supporting cylinders is formed in the lifting plate, the lifting plate is driven to move up and down through rotation of the spiral rod piece, the lifting plate is fixedly connected with the needle seat through screws, and the through hole used for fixing a puncture needle is formed in the needle seat, so that the puncture needle can puncture and move along a fixed direction.
2. The system for automatically positioning tumor under nuclear magnetic resonance environment according to claim 1, wherein the hollow pipeline of the soft tissue holding device is provided with longitude and latitude lines.
3. The system for automatically positioning tumor under nuclear magnetic resonance environment according to claim 1 or 2, wherein the soft tissue clamping device is placed at the center of the top plate, and a headrest pad, a chest pad, a supporting pad and a foot pad are further arranged on the top plate.
4. The system of claim 1, wherein all components of the positioning device are made of engineering plastics.
5. The system of claim 1, wherein the concentration of the copper sulfate aqueous solution in the hollow pipeline is 1 g/L.
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| CN201822252267.6U CN209932740U (en) | 2018-12-29 | 2018-12-29 | Automatic tumor positioning system oriented to nuclear magnetic resonance environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109770902A (en) * | 2018-12-29 | 2019-05-21 | 天津大学 | A kind of tumour automatic station-keeping system towards under magnetic nuclear resonance environment |
| CN112568892A (en) * | 2020-11-26 | 2021-03-30 | 四川大学华西医院 | Mammary gland imaging device with integrated coil system and superconducting magnetic resonance |
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2018
- 2018-12-29 CN CN201822252267.6U patent/CN209932740U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109770902A (en) * | 2018-12-29 | 2019-05-21 | 天津大学 | A kind of tumour automatic station-keeping system towards under magnetic nuclear resonance environment |
| CN109770902B (en) * | 2018-12-29 | 2024-03-19 | 天津大学 | Tumor automatic positioning system oriented to nuclear magnetic resonance environment |
| CN112568892A (en) * | 2020-11-26 | 2021-03-30 | 四川大学华西医院 | Mammary gland imaging device with integrated coil system and superconducting magnetic resonance |
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