CN115381427B - Medical body part electromagnetic shielding device - Google Patents
Medical body part electromagnetic shielding device Download PDFInfo
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- CN115381427B CN115381427B CN202211135291.6A CN202211135291A CN115381427B CN 115381427 B CN115381427 B CN 115381427B CN 202211135291 A CN202211135291 A CN 202211135291A CN 115381427 B CN115381427 B CN 115381427B
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- 239000002184 metal Substances 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims description 62
- 230000007246 mechanism Effects 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000036541 health Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005481 NMR spectroscopy Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000338 in vitro Methods 0.000 abstract description 2
- 238000001727 in vivo Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000005311 nuclear magnetism Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 210000001145 finger joint Anatomy 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 210000004738 parenchymal cell Anatomy 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- Biophysics (AREA)
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- High Energy & Nuclear Physics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Radiology & Medical Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention aims to solve the problems in the prior art and discloses a medical body part electromagnetic shielding device. When nuclear magnetic resonance detection is carried out, body parts needing shielding can be respectively pressed in the vertical direction and the horizontal direction, damage to a patient possibly caused by the fact that a metal object swings in the body due to a magnetic field generated by nuclear magnetic resonance is avoided, burn caused by heating of special materials which can generate heat in the human body under the condition of electromagnetic left and right is avoided, influence of the metal object on a nuclear magnetic detection result is reduced, and accuracy and safety of nuclear magnetic detection are guaranteed. The clamping device is suitable for patients with various special conditions, clamps according to the shape of the metal objects in vivo or in vitro, avoids the exposure of the metal objects, and has strong adaptability.
Description
Technical Field
The invention relates to the technical field of electromagnetic shielding, in particular to a medical body part electromagnetic shielding device.
Background
Nuclear magnetic resonance imaging is a medical imaging technique that uses the principles of nuclear magnetic resonance and has excellent diagnostic functions for human body parenchymal organs, as well as for the heart and large blood vessels. The principle of nuclear magnetic resonance is that the signal generated by hydrogen atomic nucleus in magnetic field is passed through an inspection mode of computer reconstruction processing and imaging, the hydrogen atomic content in human body is high, its distribution is wide, and we can regard it as a small magnet, and the spin axis distribution and arrangement of the small magnet are disordered, if we put human body in a strong magnetic field, then this small magnet can be regularly arranged according to the direction of magnetic field, at this time we apply a radio frequency pulse affecting magnetic field, at the same time absorb the released energy by means of radio frequency signal. Compared with other auxiliary examination means, the nuclear magnetic resonance imaging method has the advantages of multiple imaging parameters, high scanning speed, high tissue resolution, clearer images and the like, can help doctors to 'see' the early lesions which are not easy to perceive, and is already a sharp tool for early screening of tumors, heart diseases and cerebrovascular diseases.
Because the metal interferes with the external magnetic field, the metal on the body must be removed before the patient can perform a nuclear magnetic resonance examination. However, some patients may have cardiac pacemakers, body material residues or metal prostheses installed, or some patients may need to wear monitoring or rescue equipment. At this time, nuclear magnetic resonance detection is performed, and interference may be caused to the detection result of nuclear magnetic resonance; for patients with metal implants in the body, the metal articles can be damaged due to the swing of the magnetic field generated by nuclear magnetic resonance in the body, and some materials can heat, so that the human body can be damaged due to the heat in the human body, and the burn can be seriously caused.
In order to perform nuclear magnetic resonance detection on the patient with special conditions, the electromagnetic shielding method can be used for performing local electromagnetic shielding on the special part, so that the detection result is not greatly affected. However, because of the shape and position of the metal object carried by the body of the special patient, there is a need for a device that can fix the part containing the metal object well and perform nuclear magnetic shielding to ensure the accuracy and safety of nuclear magnetic resonance detection.
Disclosure of Invention
The invention aims to solve the problems in the prior art and discloses a medical body part electromagnetic shielding device.
The purpose of the invention is realized in the following way: the utility model provides a medical health part electromagnetic shield device, includes the base, the shield cover, is equipped with positioner below the base for fixed mounting is on bed board or test table, and its installation device and positioning method are prior art, and are not described herein more. Two partition boards in the vertical direction are symmetrically arranged in the base, the shielding cover is fixedly arranged on the peripheral surface of the base and matched with the base to form three chambers, namely a middle shielding chamber and auxiliary chambers symmetrically positioned on two sides of the shielding chamber, slide ways in the vertical direction are symmetrically arranged on the left side wall and the right side wall of the shielding chamber, and a vertical pressing device which vertically slides on the slide ways is arranged in the slide ways; the left side wall and the right side wall of the shielding cavity are symmetrically provided with channels in the horizontal direction, the channels are communicated with the shielding cavity and the left auxiliary cavity and the right auxiliary cavity, auxiliary push rods sliding towards the middle of the shielding cavity are symmetrically arranged in the channels, and auxiliary pressing devices are arranged at the extending ends of the shielding cavity by the auxiliary push rods; an elastic piece is arranged between the vertical pressing device and the upper end face of the shielding cover.
Further, the vertical pressing device comprises a vertical pressing block vertically sliding in the shielding cavity, a handle extending out from the upper part of the vertical pressing block, an elastic pressing pad arranged below the vertical pressing block and a longitudinal sliding block in the auxiliary cavity, a vertical sliding way is arranged on the inner wall and the outer wall of the auxiliary cavity, the longitudinal sliding block vertically slides in the vertical sliding way, and the upper part of the longitudinal sliding block is connected with the elastic piece.
Further, the vertical pressing device comprises a vertical pressing block vertically sliding in the shielding cavity, an elastic pressing pad arranged below the pressing block and a longitudinal sliding block in the auxiliary cavity, a vertical sliding way is arranged on the inner wall and the outer wall of the auxiliary cavity, the longitudinal sliding block vertically slides in the vertical sliding way, and the upper part of the longitudinal sliding block is connected with the elastic piece.
Further, the auxiliary pressing device comprises a transverse chute fixedly arranged in the auxiliary cavity, an auxiliary push rod which transversely slides is arranged in the transverse chute, and a lateral pressing block is arranged at the extending end of the auxiliary push rod penetrating through the inner wall and entering the shielding cavity; a stop plate is arranged in the transverse sliding groove, the stop plate divides the transverse sliding groove into two parts, a pushing slide block is arranged in a slide way in one side of the stop plate, the pushing slide block is connected with the longitudinal slide block through a connecting rod, and the auxiliary push rod transversely slides in the slide way in the other side of the stop plate; the stop plate on be equipped with the through-hole, be provided with step type pre-ejector pin in the through-hole, pre-ejector pin passes the spring, the step is located horizontal spout internal spring with auxiliary push rod between further, the stop plate on be equipped with the through-hole, be provided with step type pre-ejector pin in the through-hole, pre-ejector pin passes the spring, the step is located horizontal spout internal spring with auxiliary push rod between.
Further, the hollow cuboid structure of sliding channel is facing to shield cover one side is opened there is slotted hole slide the shield cover openly corresponds the position and is equipped with the rectangle through-hole that corresponds, auxiliary push rod on fixedly be equipped with the locking axle, the locking axle passes through the bar through-hole that establishes on sliding channel and the shield cover, locking axle head portion is equipped with the locking nut, the locking nut stretches out the outside of shield cover at the locking axle.
Further, the locking axle stretch out the rectangle through-hole department that establishes on the shield cover and be equipped with the elasticity slider, elasticity slider middle part is outstanding to pass through the bar through-hole, the inside laminating of upper and lower both sides and the shield cover of elasticity slider, laminating department symmetry is equipped with the elasticity friction disc, the locking axle stretch out the end with through screw-thread fit between the locking nut, be equipped with annular friction pad between locking nut and the shield cover outer wall, be equipped with the spring between annular friction pad and the locking nut, the material of elasticity friction disc and annular friction pad is rubber.
Further, the elastic piece is a spring cylinder fixedly arranged on the upper wall inside the shielding cover.
Furthermore, the lateral pressing block is a blocky high-elastic sponge or silica gel.
Further, the vertical slide ways arranged on the inner wall and the outer wall of the auxiliary cavity are T-shaped grooves, and correspondingly, the outer side face of the longitudinal sliding block is provided with T-shaped protrusions.
Furthermore, a plurality of metal detection sensors can be arranged at the edge of the shielding cavity, after the shielding cavity is pressed, if the metal object at the shielded part is about to extend out of the shielding cavity, an electric signal is generated, a reset device arranged in the auxiliary cavity is communicated, the vertical pressing mechanism is jacked up, and meanwhile, an alarm is given, the checking work is stopped until the metal object is completely arranged in the shielding cover, and the device is unlocked, so that nuclear magnetic detection operation can be carried out.
Further, the resetting device comprises a resetting mechanism base fixedly arranged in the shielding cover base, a three-connecting-rod mechanism and a hydraulic electric control lifting oil cylinder, wherein the three-connecting-rod mechanism comprises a resetting rocker arm, one end of the resetting rocker arm is semicircular, and the resetting rocker arm is in tangential fit with a mounting shaft of a connecting rod between a longitudinal sliding block and a transverse sliding block in the vertical direction.
Preferably, a hanging fan can be arranged on the auxiliary push rod, which extends to the inner end of the shielding cavity, so that ventilation of the shielding part in the nuclear magnetism detection process is ensured.
Preferably, in special cases, the position of the shielding is not well fixed, and when more precise fixation is needed, the auxiliary pressing device or the lateral pressing block can be replaced by a robot arm.
When the invention is used, the shielding device is fixedly arranged on the bed board or the detection table, and the installation and fixation method is the prior art and is not described herein. Before nuclear magnetic resonance detection is carried out, locking nuts positioned on two sides of the outer part of the shielding case are rotated to a half-loose state, and at the moment, the locking shaft is locked in the transverse slideway to stop sliding due to the friction force action of the locking nuts and elastic friction blocks and annular friction blocks arranged on the locking shaft on the shielding case; the part of the patient's body where nuclear magnetic shielding is required goes deep into the shielding chamber in the middle of the shielding device. At this time, the vertical compression device or the body part of the patient to be shielded is actively pulled up by the handle to jack up the elastic compression pad. Because the spring cylinder arranged at the top of the inner side of the shielding cover is connected with the vertical pressing device, the downward pressure of the elastic pressing pad can be always given, and the shielding part is pressed in the vertical direction.
Simultaneously, the outer walls of the auxiliary chambers at two sides are connected with the longitudinal sliding blocks in a sliding manner through the T-shaped sliding ways, and the longitudinal sliding blocks are fixedly connected with the middle lateral pressing blocks through the connecting plates, so that the longitudinal sliding blocks move upwards at the moment and drive the connecting rods to enable the transverse sliding blocks in the transverse sliding grooves to slide inwards, the transverse sliding blocks push the pre-ejector rods to push inwards, so that the lateral pressing blocks at two sides are pushed to fold towards the inside of the shielding chamber, and the part to be shielded is pushed towards the center of the shielding chamber. If the lateral pressing block does not press the shielding part, the pressing pad in the vertical direction presses the shielding part, at the moment, the locking nut is loosened and slides inwards, and the locking shaft drives the auxiliary push rod and the lateral pressing block to fold towards the middle until the shielding part is clamped. After the clamping is completed, the vertical direction and the horizontal direction are simultaneously pressed and tightly pressed. The metal objects which are arranged in or outside the body part of the patient are completely and regularly fixed in the shielding cover, so that the accuracy and the safety of nuclear magnetism detection are ensured.
The resetting device comprises a resetting mechanism base fixedly arranged in the shielding cover base, a three-connecting-rod mechanism and a hydraulic electric control lifting oil cylinder, wherein the three-connecting-rod mechanism comprises a resetting rocker arm, one end of the resetting rocker arm is semicircular, and the resetting rocker arm is in tangential fit with a mounting shaft of a connecting rod between a longitudinal sliding block and a transverse sliding block in the vertical direction. When the metal object at the shielded part is about to extend out of the shielding cavity, an electric signal is generated, a hydraulic electric control lifting oil cylinder is connected, the hydraulic electric control lifting oil cylinder is lifted, a reset rocker arm in a linkage three-link structure is lifted, a semicircular notch is tangent to a mounting shaft of a connecting link between the longitudinal slide block and the transverse slide block in the vertical direction, the longitudinal slide block is lifted, a vertical pressing device is jacked, and the shielded part is decompressed; and alarming at the same time, stopping checking until the metal object is completely placed in the shielding case, unlocking the device, and performing nuclear magnetic detection operation.
The invention has the advantages that:
1. when nuclear magnetic resonance detection is carried out, body parts needing shielding can be respectively pressed in the vertical direction and the horizontal direction, damage to a patient possibly caused by the fact that a metal object swings in the body due to a magnetic field generated by nuclear magnetic resonance is avoided, burn caused by heating of special materials which can generate heat in the human body under the condition of electromagnetic left and right is avoided, influence of the metal object on a nuclear magnetic detection result is reduced, and accuracy and safety of nuclear magnetic detection are guaranteed.
2. The clamping device is suitable for patients with various special conditions, clamps according to the shape of the metal objects in vivo or in vitro, avoids the exposure of the metal objects, and has strong adaptability.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the internal structure of the base of the present invention.
Fig. 3 is a schematic view of the auxiliary chamber structure of the present invention.
Fig. 4 is a schematic view of a transverse chute structure according to the present invention.
Fig. 5 is a cross-sectional view of a transverse chute according to the present invention.
Fig. 6 is a schematic view of a locking structure of the present invention.
Fig. 7 is a partial cross-sectional view of the locking structure of the present invention.
Fig. 8 is a schematic view of a mating mechanism of the longitudinal slide of the present invention.
Fig. 9 is a mating cross-sectional view of a longitudinal slide of the present invention.
Fig. 10 is a schematic diagram of the installation of the reset mechanism of the present invention.
FIG. 11 is a schematic view of the structure of the auxiliary push rod connected with the robot arm.
List of reference numerals parts
1. Base, 2, shield, 3, vertical ram, 4, resilient pad, 5, lateral ram, 6, handle, 7, transverse runner, 8, locking device, 11, connecting rod, 12, longitudinal slide, 13, connecting plate, 14, auxiliary pushrod, 15, fastening bolt, 16, hitch, 17, connecting shaft, 18, metal detection sensor 101, positioning device, 102, auxiliary chamber, 103, shield chamber, 104, T-shaped slide, 105, bar through hole, 201, spring cylinder, 701, transverse slide, 702, stop plate, 703, pre-ejector pin, 704, spring, 705, slotted slide, 801, locking shaft, 802, locking slide, 803, elastic slider, 804, resilient friction block, 805, locking nut, 806, annular friction pad, 807, spring two, 901, return mechanism base, 902, hydraulic electrical control lift cylinder, 903, return rocker arm, 121, longitudinal slider body, 122, upper ejector pin 123, lower link, 124, T-shaped protrusion, 21, electrical control one, 22, ball bearing, 23, 24, thumb joint, palm joint, finger joint.
Detailed Description
In embodiment 1, as shown in fig. 1-10, the device of the present invention comprises a base 1, a shielding case 2, a positioning device 101 disposed below the base 1, and positioning and mounting process parts disposed on the positioning device 101 and used for being fixedly mounted on a bed board or a detection table, wherein the mounting device and the positioning method are in the prior art, and are not described herein. Two vertical partition plates are symmetrically arranged in the base 1, the shielding cover 2 is fixedly arranged on the peripheral surface of the base 1, the shielding cover 2 and the base 1 are fixed through 2 symmetrically arranged fastening bolts 15, the shielding cover 2 and the base 1 are matched to form three cavities, namely a middle shielding cavity 103 and auxiliary cavities 102 symmetrically arranged on two sides of the shielding cavity 103, vertical slide ways are symmetrically arranged on the left side wall and the right side wall of the shielding cavity 103, the slide ways are rectangular strip-shaped through holes 105, and vertical compression devices which vertically slide on the strip-shaped through holes 105 are arranged in the two strip-shaped through holes 105; the vertical pressing device comprises a vertical pressing block 3 vertically sliding in a shielding cavity 103, a handle 6 extending above the vertical pressing block, an elastic pressing pad 4 arranged below the vertical pressing block 3 and a longitudinal sliding block 12 in an auxiliary cavity 103, horizontal channels are symmetrically arranged on the left side wall and the right side wall of the shielding cavity 103, the channels are communicated with the shielding cavity 103 and the left auxiliary cavity 102, auxiliary pushing rods 14 sliding towards the middle of the shielding cavity are symmetrically arranged in the channels, and lateral pressing blocks 10 are arranged at the extending ends of the auxiliary pushing rods 14 in the shielding cavity 103; an elastic piece is arranged between the vertical pressing device and the upper end face of the shielding case, and the elastic piece is a spring cylinder 201 fixedly arranged on the upper wall inside the shielding case 2; the spring cylinder 201 is elastically connected with the upper ejector rod 122 at the upper part of the longitudinal sliding block 12 and has downward elasticity; the longitudinal sliding block 12 further comprises a longitudinal sliding block main body 121 with a cuboid structure and a lower connecting rod 123 extending below the longitudinal sliding block main body 121, a T-shaped protrusion 124 is arranged on the contact surface of the inner side of the outer wall of the longitudinal sliding block main body 121 and the outer wall of the base 1, a T-shaped slideway 104 is correspondingly arranged on the inner side of the outer wall of the base 1, and the longitudinal sliding block 12 can vertically slide in the base 1 through sliding fit of the T-shaped protrusion 124 and the T-shaped slideway 104.
The auxiliary chamber 102 is internally fixedly provided with a transverse sliding groove 7, the auxiliary push rod 12 transversely slides in the transverse sliding groove 7, a stop plate 702 is arranged in the transverse sliding groove 7, the transverse sliding groove is divided into two parts by the stop plate 702, a pushing slide block 701 is arranged in a slide way in one side of the stop plate 702, the pushing slide block 701 is connected with a lower connecting rod 123 on the longitudinal slide block 12 through a connecting rod 11, the auxiliary push rod 14 transversely slides in the slide way in one side of the stop plate 702, and a spring 703 is arranged between the auxiliary push rod 14 and the stop plate 702. The baffle plate 702 is provided with a through hole, a step type pre-ejector rod 703 is arranged in the through hole, the pre-ejector rod 703 penetrates through the spring 704, and the step is positioned between the spring 704 and the auxiliary push rod 14 in the transverse chute 7.
As shown in fig. 4-6, the sliding channel 7 is of a hollow cuboid structure, a slotted hole slideway 705 is formed on one side facing the shielding case 2, a corresponding rectangular through hole is formed in a position corresponding to the front surface of the shielding case 2, a locking device 8 is fixedly arranged on the auxiliary push rod 14, the locking device 8 comprises a locking shaft 801, the locking shaft 801 passes through the sliding channel 7 and a strip-shaped through hole formed in the shielding case 2, a locking nut 805 is arranged at the end part of the locking shaft 801, and the locking nut 805 extends out of the shielding case 2 at the outer side of the locking shaft 801.
The locking axle 801 stretches out rectangle through-hole department on the shield cover and is equipped with elasticity slider 803, elasticity slider 803 middle part is outstanding to pass through rectangle through-hole, the upper and lower both sides and the inside laminating of shield cover 2 of elasticity slider 803, laminating department symmetry is equipped with elasticity friction block 804, pass through screw-thread fit between the stretching end of locking axle 801 and the locking nut 805, be equipped with annular friction pad 806 between locking nut 805 and the outer wall of shield cover 2, be equipped with spring two 807 between annular friction pad 806 and the locking nut 805, the material of elasticity friction block 804 and annular friction pad 806 is rubber.
When the invention is used, the shielding device is fixedly arranged on the bed board or the detection table, and the installation and fixation method is the prior art and is not described herein. Before nuclear magnetic resonance detection, the locking nuts 805 on two sides outside the shielding case 2 are rotated to a half-loose state, and at this time, the locking shaft 801 makes the auxiliary push rod 14 lock and stop sliding in the transverse chute 7 due to the friction force of the locking nuts 805, the elastic friction blocks 804 and the annular friction pads 806 arranged on the locking shaft 801, and the outer wall of the shielding case 2; the part of the patient's body where nuclear magnetic shielding is required goes deep into the shielding chamber 103 in the middle of the shielding. At this time, the elastic pressing pad 4 is lifted up by actively pulling up the vertical pressing device or a body part of the patient to be shielded by the handle 6. Since the spring cylinder 201 disposed at the top of the inner side of the shielding case 2 is connected with the vertical pressing device, the elastic pressing pad 4 is always pressed downward, and the shielding part is pressed in the vertical direction.
Meanwhile, the outer walls of the auxiliary chambers 102 on the two sides are movably connected with the longitudinal sliding blocks 12 through the T-shaped sliding ways 104, and the longitudinal sliding blocks 12 are fixedly connected with the middle vertical pressing devices through the connecting plates 13, so that the longitudinal sliding blocks 12 move upwards at the moment and drive the connecting rods 11 to enable the transverse sliding blocks 701 in the transverse sliding grooves 7 to slide inwards, the transverse sliding blocks 701 push the pre-push ejector rods 703 to push inwards, and therefore the lateral pressing blocks 10 on the two sides are pushed to fold towards the inside of the shielding chamber, and the part to be shielded is pushed towards the center of the shielding chamber 103. If the lateral pressing block 10 does not press the shielding part before the vertical elastic pressing pad 4 presses the shielding part, the locking nut 805 is loosened and slides inward, and the locking shaft 801 drives the auxiliary push rod 14 and the lateral pressing block 10 to close toward the middle until the shielding part is clamped. After the clamping is completed, the vertical direction and the horizontal direction are simultaneously pressed and tightly pressed. The metal objects which are arranged in or outside the body part of the patient are completely and regularly fixed in the shielding cover, so that the accuracy and the safety of nuclear magnetism detection are ensured.
Example 2
On the basis of embodiment 1, if the shape of the position to be shielded is special, the lateral pressing block 10 firstly presses the shielding part, the elastic pressing pad 4 in the vertical direction does not press the shielding part, the pre-ejector rod 703 can be removed, and the retaining plate 702 is fixedly arranged. In this case, the lateral slide 701 and the auxiliary push rod 14 each have their own sliding formation in the lateral slide 7, and no linkage is formed. When the part of the patient to be shielded enters the shielding chamber 103, the locking nut 805 is firstly screwed to fix the lateral pressing block 10 connected with the auxiliary push rod 14 at the initial position; after the handle 6 is pulled up and loosened, the locking nut 805 is loosened after the elastic pressing pad 4 presses the shielding part, and the lateral pressing block 10 is folded towards the middle until the shielding part is pressed due to the inward elasticity and the manual sliding action of the second spring 704, so that the accuracy and the safety of nuclear magnetism detection are ensured while monitoring is finished.
Example 3
On the basis of embodiment 1, a plurality of groups of metal detection sensors 18 are symmetrically arranged at the edge of the shielding chamber, the metal detection sensors 18 are connected with a reset device fixedly arranged in the auxiliary chamber 102, the reset mechanism comprises a reset mechanism base 901 fixedly arranged in the auxiliary chamber 102, a three-link mechanism and a hydraulic electric control lifting cylinder 902, the three-link mechanism comprises a reset rocker 903, one end of the reset rocker 903 is a semicircular notch, and the reset rocker is in tangential fit with the extending end of a connecting rod connecting shaft 17 of a connecting rod 11 between the longitudinal sliding block 12 and the transverse sliding block 701 in the vertical direction. When the metal object at the shielded part is about to extend out of the shielding cavity, the metal detection sensor 18 generates an electric signal, the hydraulic electric control lifting oil cylinder 902 is connected, the hydraulic electric control lifting oil cylinder 902 is lifted, the reset rocker 903 in the linkage three-link structure is lifted to be in contact with the link connecting shaft 17, the longitudinal slide block 12 is lifted, the vertical pressing device is lifted, and the shielded part is released from being pressed; and alarming at the same time, stopping checking until the metal object is completely placed in the shielding device, unlocking the device, and performing nuclear magnetic detection operation.
Example 4
Because the position that needs the shielding probably is the joint or the neck of easy activity to and some special patient's body can uncontrolled shake, in order to guarantee that the metal object can not produce relative displacement at nuclear magnetism monitoring's in-process, can change side direction briquetting 10 or supplementary closing device into high elasticity sponge or silica gel.
Example 5
As shown in fig. 11, the lateral pressing block 10 can be replaced by a robot arm, the robot arm comprises an electric control rotating arm one 21 rotatably sleeved on the auxiliary push rod 14, an electric control rotating arm two 23 connected with the electric control rotating arm one 21 through a spherical bearing 22, and a mechanical palm 24 arranged on the electric control rotating arm two 23, wherein the mechanical palm 24 is provided with a lateral thumb joint 26 and a plurality of parallel knuckles 25 in the forward direction, the mechanical palm 24 and each knuckle imitate the joint of a human body palm, can move and grip in all directions, the electric control rotating arm one 21 can rotate relative to the auxiliary push rod 14, and the electric control rotating arm two 23 can relatively move with the electric control rotating arm one 21 in all directions due to the arrangement of the spherical bearing 22, so that the movement mode of the human body arm is imitated; the entire robotic arm system can thus replace the lateral pressure block 10, accurately accommodate the fixation and compression of various shaped metal objects or implants extending outside the body in special situations, such as patients wearing electrocardiographs, and fracture patients carrying special shaped fixation splints or steel nails.
In the description of the present invention, it should be understood that the terms "upper", "lower", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The above description is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The utility model provides a medical health part electromagnetic shield device, includes base, shield cover, its characterized in that: two partition boards in the vertical direction are symmetrically arranged in the base, the shielding cover is fixedly arranged on the peripheral surface of the base and matched with the base to form three chambers, namely a middle shielding chamber and auxiliary chambers symmetrically positioned on two sides of the shielding chamber, slide ways in the vertical direction are symmetrically arranged on the left side wall and the right side wall of the shielding chamber, and vertical pressing devices which vertically slide on the slide ways are arranged in the two slide ways; the shielding cavity and the auxiliary cavity are internally provided with auxiliary pressing devices which pass through the connecting channels and transversely slide in the base, and the extending ends of the shielding cavity are provided with lateral pressing blocks; an elastic piece is arranged between the vertical pressing device and the upper end face of the shielding cover;
the vertical pressing device comprises a vertical pressing block vertically sliding in the shielding cavity, a handle extending out from the upper part of the vertical pressing block, an elastic pressing pad arranged below the vertical pressing block, and a longitudinal sliding block in the auxiliary cavity, and the upper part of the longitudinal sliding block is connected with the elastic piece;
the auxiliary pressing device comprises a transverse sliding chute fixedly arranged in the auxiliary cavity, an auxiliary push rod which transversely slides is arranged in the transverse sliding chute, and a lateral pressing block is arranged at the extending end of the auxiliary push rod penetrating through the inner wall and entering the shielding cavity; a stop plate is arranged in the transverse sliding groove, the stop plate divides the transverse sliding groove into two parts, a transverse sliding block is arranged in a slide way in one side of the stop plate, the transverse sliding block is connected with the longitudinal sliding block through a connecting rod, and the auxiliary push rod transversely slides in the slide way in the other side of the stop plate; the stop plate is provided with a through hole, a pre-ejector rod is arranged in the through hole, a spring is arranged between the auxiliary push rod and the stop plate, and the pre-ejector rod penetrates through the spring; the outer walls of the auxiliary chambers at two sides are connected with a longitudinal sliding block in a sliding way through a T-shaped slideway, the longitudinal sliding block is fixedly connected with a middle vertical pressing device through a connecting plate, and when the longitudinal sliding block moves upwards, the connecting rod can be driven to enable the transverse sliding block in the transverse sliding groove to slide inwards;
the transverse sliding chute is of a hollow cuboid structure, a slotted hole slideway is formed in one side facing the shielding cover, a corresponding rectangular through hole is formed in a position corresponding to the front surface of the shielding cover, a locking shaft is fixedly arranged on the auxiliary push rod, the locking shaft passes through the transverse sliding chute and the rectangular through hole formed in the shielding cover, a locking nut is arranged at the end part of the locking shaft, and the locking nut extends out of the shielding cover at the locking shaft;
the shielding cavity edge symmetry is provided with metal detection sensor, and metal detection sensor is connected with fixed mounting's canceling release mechanical system in the auxiliary chamber, and canceling release mechanical system includes the canceling release mechanical system base of fixed mounting in the auxiliary chamber, three link mechanism to and the automatically controlled lift cylinder of hydraulic pressure, and three link mechanism includes the canceling release mechanical system, and the one end of canceling release mechanical system is semi-circular incision, and the extension end of the connecting rod connecting axle of the lower extreme of connecting rod between vertical slider and the horizontal slider is tangent cooperation in vertical direction.
2. A medical body part electromagnetic shielding device according to claim 1, wherein: the locking shaft stretch out of the rectangular through hole arranged on the shielding cover and is provided with an elastic sliding block, the middle part of the elastic sliding block protrudes out of the rectangular through hole, the upper side and the lower side of the elastic sliding block are attached to the inside of the shielding cover, elastic friction blocks are symmetrically arranged at the attaching position, the stretching end of the locking shaft is matched with the locking nut through threads, an annular friction block is arranged between the locking nut and the outer wall of the shielding cover, a spring is arranged between the annular friction block and the locking nut, and the elastic friction block and the annular friction block are made of rubber.
3. A medical body part electromagnetic shielding device according to claim 1, wherein: the elastic piece is a spring cylinder fixedly arranged on the upper wall inside the shielding cover.
4. A medical body part electromagnetic shielding device according to claim 1, wherein: the lateral pressing block is a blocky high-elastic sponge or silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211135291.6A CN115381427B (en) | 2022-09-19 | 2022-09-19 | Medical body part electromagnetic shielding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211135291.6A CN115381427B (en) | 2022-09-19 | 2022-09-19 | Medical body part electromagnetic shielding device |
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| CN115381427A CN115381427A (en) | 2022-11-25 |
| CN115381427B true CN115381427B (en) | 2024-03-08 |
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| CN202211135291.6A Active CN115381427B (en) | 2022-09-19 | 2022-09-19 | Medical body part electromagnetic shielding device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204363988U (en) * | 2015-01-07 | 2015-06-03 | 南阳医学高等专科学校第一附属医院 | A kind of Novel nuclear magnetic resonance examination fixing device |
| CN112089435A (en) * | 2020-10-20 | 2020-12-18 | 刘贵芳 | Bearing fixing device for detecting children in radiology department |
| CN213993555U (en) * | 2020-05-11 | 2021-08-20 | 常州市第一人民医院 | Head fixing device for nuclear magnetic resonance examination |
| CN113784603A (en) * | 2021-09-01 | 2021-12-10 | 温州市人民医院 | Body local electromagnetic shielding device for nuclear magnetic resonance |
| CN113835055A (en) * | 2021-09-01 | 2021-12-24 | 温州市人民医院 | Nuclear magnetic shielding device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1895316B1 (en) * | 2006-09-01 | 2009-10-28 | Esaote S.p.A. | Removable electromagnetic shielding device for magnetic nuclear magnetic resonance apparati and method for making the same |
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2022
- 2022-09-19 CN CN202211135291.6A patent/CN115381427B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204363988U (en) * | 2015-01-07 | 2015-06-03 | 南阳医学高等专科学校第一附属医院 | A kind of Novel nuclear magnetic resonance examination fixing device |
| CN213993555U (en) * | 2020-05-11 | 2021-08-20 | 常州市第一人民医院 | Head fixing device for nuclear magnetic resonance examination |
| CN112089435A (en) * | 2020-10-20 | 2020-12-18 | 刘贵芳 | Bearing fixing device for detecting children in radiology department |
| CN113784603A (en) * | 2021-09-01 | 2021-12-10 | 温州市人民医院 | Body local electromagnetic shielding device for nuclear magnetic resonance |
| CN113835055A (en) * | 2021-09-01 | 2021-12-24 | 温州市人民医院 | Nuclear magnetic shielding device |
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| CN115381427A (en) | 2022-11-25 |
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