CN217488651U - Head fixing device for magnetic resonance imaging examination - Google Patents
Head fixing device for magnetic resonance imaging examination Download PDFInfo
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- CN217488651U CN217488651U CN202123390552.2U CN202123390552U CN217488651U CN 217488651 U CN217488651 U CN 217488651U CN 202123390552 U CN202123390552 U CN 202123390552U CN 217488651 U CN217488651 U CN 217488651U
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Abstract
The utility model provides a head fixing device for magnetic resonance imaging examination, which comprises a head cushion seat, a touch block and a lateral fixing mechanism; the head cushion seat is provided with an inner cavity, the touch block longitudinally penetrates through the top surface of the head cushion seat and is in sliding connection with the head cushion seat, racks are respectively arranged on two sides of the touch block, and the tops of two sides of the head cushion seat are also provided with embedding openings; the lateral fixing mechanism comprises gears, connecting rods and fixing portions, the gears are arranged on the inner side of each embedding opening respectively and are connected with the head cushion in a rotating mode, the gears are connected with the racks in a meshing transmission mode, the connecting rods are further arranged on one side, close to the outer side of each embedding opening, of each gear, each connecting rod extends upwards, and the fixing portions are arranged at the extending ends of the connecting rods. When specifically using, through utilizing patient's head self gravity, it is fixed with removing fixedly to carry out automation to patient's head to combine the linkage between touch piece and the side direction fixed establishment again, need not unnecessary operation and can provide effectual fixed for patient's head.
Description
Technical Field
The utility model relates to a magnetic resonance imaging field, concretely relates to be used for magnetic resonance imaging inspection head fixing device.
Background
The magnetic resonance imaging applies radio frequency pulse with specific frequency to a human body in a static magnetic field, so that hydrogen protons in the human body are excited to generate a magnetic resonance phenomenon, further, noninvasive imaging can be performed on each part of the human body, and the development of the modern medical field is greatly promoted. Clinically, the head position of a patient needs to be kept unchanged when the patient performs a skull MRI scan, so that the generation of motion artifacts is reduced, and the imaging quality is guaranteed. However, the head fixing device for clinical application at present cannot be adjusted and adapted according to the size of the head of a patient, and it is difficult to ensure that the heads of patients with various head circumferences are fully fixed, especially, the fixing effect of children patients is poor due to small head circumferences, and further the imaging quality is low, which hinders the correct diagnosis of clinicians. Therefore, the size-adjustable head fixing device for MRI examination is designed, which is beneficial to improving the quality of clinical MRI images and further improving the accuracy of image diagnosis.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a be used for magnetic resonance imaging inspection head fixing device to the head fixing device who solves present clinical application can't carry out adjustable adaptability according to patient head size of a dimension and change, and is difficult to guarantee all to form fully fixedly to the patient's of various head girdings head, leads to fixed effect not good, and then the imaging quality has lower the problem of hindering clinician's correct diagnosis.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a head fixing device for magnetic resonance imaging examination, which comprises a head cushion seat, a touch block and a lateral fixing mechanism;
the head cushion seat is provided with an inner cavity, the touch block longitudinally penetrates through the top surface of the head cushion seat and is in sliding connection with the head cushion seat along the penetrating direction, racks are respectively arranged on two sides of the touch block, embedding ports for communicating the inner cavity with the outside are further formed in the tops of two sides of the head cushion seat on the same side with the racks, and a plurality of reset springs are further arranged between the bottom of the touch block and the bottom of the inner cavity of the head cushion seat;
the lateral fixing mechanism comprises gears, connecting rods and fixing portions, the gears are arranged on the inner side of each embedding opening respectively, each gear is connected with the head pad seat in a rotating mode around the axis of the gear, the axis of each gear is perpendicular to the sliding direction of the touch block and is in meshed transmission with the racks on the same side, one side, close to the outer side of the embedding opening, of each gear is further provided with a connecting rod, and each connecting rod extends upwards and is provided with a fixing portion at the extending end of the connecting rod.
According to the technical scheme, the utility model provides a be used for magnetic resonance imaging inspection head fixing device, when specifically using, the head pushes down touch piece when patient's head is placed on the head cushion, touch piece slides downwards, simultaneously the rack drives the gear to rotate, two connecting rods follow the rotation and gather together to the inboard, both sides fixed part extrudes patient's head both sides respectively and implements the fixation to patient's head, therefore, no matter what kind of head circumference patient can make both sides fixed part draw together the butt towards patient's head through pushing down touch piece, realize the head centre gripping of various head circumference patients and fix, patient's head leaves touch piece after the inspection and can relieve the pressure of fixed part to the head, through utilizing patient's head self gravity, and then combine the linkage between touch piece and the side direction fixed establishment to carry out automatic fixation and release the fixation to patient's head, need not unnecessary operation and can provide effectual fixed for patient's head, when the patient stands up after the inspection finishes, the piece that touches can not in time return the normal position, and the side direction fixed establishment of both sides also can not open automatically, shelters from the patient and stands up easily, sets up reset spring and is favorable to touching piece and side direction fixed establishment can automatic re-setting after using.
Furthermore, the fixed part includes fixed block and articulated mast again, the articulated mast is connected and extends towards the direction that is close to another articulated mast with the extension end of connecting rod, every the extension end of articulated mast all is equipped with a fixed block. Is beneficial to ensuring that the fixing part is better attached to the two sides of the head of the patient.
Furthermore, the fixed block is rotatably connected with the hinge rod, and the rotating center line of the fixed block is parallel to the rotating center line of the gear. The fixed block can follow and do circular motion when preventing that the connecting rod from rotating, can not laminate patient's head both sides all the time.
Furthermore, two opposite side surfaces in the inner cavity of the head cushion seat are provided with sliding grooves, two sides of the touch block, which are close to the sliding grooves, are also provided with sliding pins, and the sliding pins are positioned in the sliding grooves on the same side and are in sliding connection with the sliding grooves along the sliding direction of the touch block. The touch block can slide along the same sliding direction all the time.
Furthermore, the top surfaces of the head cushion seat and the touch block are both concave surfaces. Is favorable for the patient to better place the head.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
Fig. 1 is a schematic perspective view of a head fixing device for magnetic resonance imaging examination according to the present invention;
fig. 2 is a sectional view of a front view structure diagram of the head fixing device for magnetic resonance imaging examination according to the present invention;
fig. 3 is a cross-sectional view of a side view of the head fixing device for mri examination according to the present invention;
reference numerals are as follows:
the head cushion seat 1, the sliding groove 11 and the embedding opening 12;
the touch block 2, a return spring 21, a rack 22 and a sliding pin 23;
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 3, the present embodiment provides a head fixing device for magnetic resonance imaging examination, which includes a head cushion 1, a touch block 2 and a lateral fixing mechanism 3.
Referring to fig. 1-3, the head cushion 1 has an inner cavity, the touch block 2 longitudinally penetrates the top surface of the head cushion 1 and is slidably connected to the head cushion 1 along the penetrating direction, two sides of the touch block 2 are respectively provided with a rack 22, and two top sides of the head cushion 1 on the same side as the rack 22 are further provided with an insertion port 12 for communicating the inner cavity with the outside. In order to better place the head of the patient, the top surfaces of the head cushion seat 1 and the touch block 2 are concave.
Referring to fig. 1-3, the lateral fixing mechanism 3 further includes gears 31, connecting rods 32 and fixing portions 33, the gears 31 are respectively disposed on the inner side of each insertion opening 12, each gear 31 is rotatably connected with the head cushion 1 around the axis of the gear 31, the axis of the gear 31 is perpendicular to the sliding direction of the touch block 2, each gear 31 is in meshing transmission connection with the rack 22 on the same side, one side of each gear 31, which is close to the outer side of the insertion opening 12, is further provided with a connecting rod 32, and each connecting rod 32 extends upward and is provided with a fixing portion 33 at the extending end thereof. When specifically using, the head pushes down and touches piece 2 when patient's head is placed on head cushion 1, touch piece 2 slides down, rack 22 drives gear 31 simultaneously and rotates, two connecting rods 32 are followed and are rotated and are gathered together to the inboard, both sides fixed part 33 extrudes patient's head both sides respectively and implements fixedly to patient's head, patient's head leaves after the inspection finishes and touches piece 2 and can relieve the pressure of fixed part 33 to the head, through utilizing patient's head self gravity, it is fixed with removing fixedly to combine the linkage between touching piece 2 and the side direction fixed establishment 3 to carry out the automation to patient's head again, need not unnecessary operation and can provide effectual fixed for patient's head. In order to make the fixing portion 33 better fit to both sides of the head of the patient, further, the fixing portion 33 further includes fixing blocks 331 and hinge rods 332, the hinge rods 332 are connected to the extending ends of the connecting rods 32 and extend toward a direction adjacent to the other hinge rod 332, and the extending end of each hinge rod 332 is provided with one fixing block 331. And because the fixed block 331 will follow circular motion when the connecting rod 32 rotates, can not be attached to both sides of the head of the patient all the time, so, specifically, the fixed block 331 is connected with the hinge rod 332 in a rotating manner, and the rotating center line thereof is parallel to the rotating center line of the gear 31.
When a patient gets up after the examination is finished, the touch block 2 cannot return to the original position in time, the lateral fixing mechanisms 3 on the two sides cannot automatically open, and the patient is easy to be shielded from getting up, so that the touch block 2 and the lateral fixing mechanisms 3 can automatically reset after being used, please refer to fig. 2 and 3, and further, a plurality of reset springs 21 are arranged between the bottom of the touch block 2 and the bottom of the inner cavity of the head cushion seat 1. In order to ensure that the touch block 2 always slides along the same sliding direction, specifically, the two opposite side surfaces in the inner cavity of the head cushion 1 are both provided with sliding grooves 11, the two sides of the touch block 2 close to the sliding grooves 11 are also provided with sliding pins 23, and the sliding pins 23 are located in the sliding grooves 11 on the same side and are in sliding connection with the sliding grooves 11 along the sliding direction of the touch block 2.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (5)
1. A head fixing device for magnetic resonance imaging examination is characterized by comprising a head cushion seat (1), a touch block (2) and a lateral fixing mechanism (3);
the head cushion seat (1) is provided with an inner cavity, the touch block (2) longitudinally penetrates through the top surface of the head cushion seat (1) and is in sliding connection with the head cushion seat (1) along the penetrating direction, racks (22) are respectively arranged on two sides of the touch block (2), the tops of two sides of the head cushion seat (1) on the same side with the racks (22) are also provided with embedding ports (12) for communicating the inner cavity with the outside, and a plurality of reset springs (21) are arranged between the bottom of the touch block (2) and the bottom of the inner cavity of the head cushion seat (1);
the lateral fixing mechanism (3) comprises gears (31), connecting rods (32) and fixing portions (33), the gears (31) are arranged on the inner side of each embedded opening (12), each gear (31) is rotatably connected with the head cushion seat (1) around the axis of the gear (31), the axis of each gear (31) is perpendicular to the sliding direction of the touch block (2), each gear (31) is in meshing transmission connection with the rack (22) on the same side, one side, close to the outer side of the embedded opening (12), of each gear (31) is further provided with the connecting rod (32), and each connecting rod (32) extends upwards and is provided with the fixing portion (33) at the extending end of the connecting rod.
2. A head fixation device for mri examination according to claim 1, wherein the fixation portion (33) in turn comprises a fixation block (331) and hinge rods (332), the hinge rods (332) being connected to the extension ends of the connecting rods (32) and extending towards the direction of the next hinge rod (332), the extension end of each hinge rod (332) being provided with one fixation block (331).
3. The head fixation device for magnetic resonance imaging examination as claimed in claim 2, wherein the fixation block (331) is rotatably connected with the hinge rod (332) and has a rotation center line parallel to a rotation center line of the gear (31).
4. The head fixing device for magnetic resonance imaging examination according to claim 1, wherein the head cushion seat (1) is provided with sliding grooves (11) on two opposite sides in the inner cavity, the two sides of the touch block (2) close to the sliding grooves (11) are further provided with sliding pins (23), and the sliding pins (23) are located in the sliding grooves (11) on the same side and are slidably connected with the sliding grooves (11) along the sliding direction of the touch block (2).
5. A head fixation device for mri examination according to claim 1, wherein the top surfaces of the head rest (1) and the trigger block (2) are concave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123390552.2U CN217488651U (en) | 2021-12-30 | 2021-12-30 | Head fixing device for magnetic resonance imaging examination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123390552.2U CN217488651U (en) | 2021-12-30 | 2021-12-30 | Head fixing device for magnetic resonance imaging examination |
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| Publication Number | Publication Date |
|---|---|
| CN217488651U true CN217488651U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123390552.2U Active CN217488651U (en) | 2021-12-30 | 2021-12-30 | Head fixing device for magnetic resonance imaging examination |
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| CN (1) | CN217488651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116138724A (en) * | 2022-12-30 | 2023-05-23 | 深圳盛达同泽科技有限公司 | Ophthalmic inspection device |
-
2021
- 2021-12-30 CN CN202123390552.2U patent/CN217488651U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116138724A (en) * | 2022-12-30 | 2023-05-23 | 深圳盛达同泽科技有限公司 | Ophthalmic inspection device |
| CN116138724B (en) * | 2022-12-30 | 2024-02-27 | 深圳盛达同泽科技有限公司 | Ophthalmic inspection device |
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