CN212546933U

CN212546933U - Nuclear magnetic resonance head fixing device

Info

Publication number: CN212546933U
Application number: CN202020486766.6U
Authority: CN
Inventors: 陈红柯; 张丹丹; 丁体英
Original assignee: Henan Provincial Peoples Hospital
Current assignee: Henan Provincial Peoples Hospital
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-02-19
Anticipated expiration: 2030-04-07

Abstract

A nuclear magnetic resonance head fixing device effectively solves the problems that the existing head fixing device wastes time and labor and cannot isolate noise; the clamping device comprises a bottom plate, wherein the left side and the right side of the front end of the bottom plate are respectively connected with clamping blocks in the front-back direction in a sliding manner, the opposite surfaces of the two clamping blocks are inwards concave arc surfaces, round holes in the left-right axial direction are formed in the clamping blocks, the openings of the two round holes are opposite, earmuffs are arranged on the bottom surfaces of the round holes through springs, driving blocks in the front-back direction are arranged at the rear ends of the clamping blocks, a swing rod in the left-right direction is rotatably connected to the bottom plate through a rotating shaft in the up-down axial direction, the swing rod is located between the two; the novel multifunctional electric heating cooker is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Nuclear magnetic resonance head fixing device

Technical Field

The utility model relates to a radiology department apparatus technical field, especially a nuclear magnetic resonance head fixing device.

Background

When the head is subjected to nuclear magnetic resonance examination, the head posture must be kept unchanged for a period of time, and if the head posture changes, an image scanned by a nuclear magnetic resonance instrument generates an artifact, so that the detection is inaccurate, the judgment of a doctor is wrong, and the treatment of a patient is not facilitated.

Current nuclear magnetic resonance head fixing device is mostly the screw rod fixed, twists the screw rod, and the patient head is pressed to the screw rod front end, but this kind of fixing device wastes time and energy, and fixed spend time is more, and has examined the back, still needs medical personnel to twist once more and move the screw rod and remove fixedly, extravagant check-out time to current fixing device can't completely cut off the noise, and nuclear magnetic resonance appearance can produce strong noise when the inspection, makes the patient produce the psychology of fear.

SUMMERY OF THE UTILITY MODEL

To the above situation, in order to compensate for the deficiencies of the prior art, the utility model aims at providing a nuclear magnetic resonance head fixing device, the effectual current head fixing device of having solved wastes time and energy, and the problem of unable isolated noise.

The technical scheme of its solution is, the utility model discloses a bottom plate, the bottom plate front end left and right sides sliding connection has the grip block of fore-and-aft direction respectively, the opposite face of two grip blocks is the arcwall face of indent, axial round hole about having seted up on the grip block, two round hole openings are relative, the round hole bottom surface is equipped with the ear muff through the spring, the grip block rear end is equipped with the drive piece of fore-and-aft direction, rotate through axial pivot about on the bottom plate and be connected with the pendulum rod of left and right directions, the pendulum rod is located between two drive pieces, the pendulum rod left and right sides is connected rather than the drive piece of corresponding side is articulated through the.

Compared with the prior art, the beneficial effects of the utility model are that: grip block that is equipped with, the apparatus further comprises a rotating shaft, the pendulum rod, the pull rod etc., can realize fixing rapidly and remove fixedly to patient's head, check-up time has been saved, the ear muff that is equipped with, noise when can making isolated inspection of patient, prevent that the patient from hearing the noise when the inspection and producing the fear psychology, ratchet and pawl that are equipped with, can carry on spacingly to the grip block, prevent that the grip block from reseing in the inspection process, the T-slot and the T-shaped piece that are equipped with, can make grip block can only the horizontal slip on the bottom plate, the extension spring that is equipped with, can be so that the reset of grip block, make the grip block relieve the fixed to patient's head fast, practice thrift check-up time, this simple structure.

Drawings

Fig. 1 is an isometric view of the present invention.

Fig. 2 is a full-section top perspective view of the utility model.

Fig. 3 is a sectional top perspective view of the present invention.

Fig. 4 is a full-section elevation perspective view of the present invention.

Fig. 5 is a left perspective view of the utility model.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

By figure 1 to 5, including bottom plate 1, there is the grip block 2 of fore-and-aft direction bottom plate 1 front end left and right sides sliding connection respectively, the opposite face of two grip blocks 2 is the arcwall face of indent, axial round hole 3 about having seted up on grip block 2, two round hole 3 openings are relative, round hole 3 bottom surface is equipped with ear muff 5 through spring 4, grip block 2 rear end is equipped with fore-and-aft direction's drive piece 6, rotate through axial pivot 7 from top to bottom on bottom plate 1 and be connected with the pendulum rod 8 of direction about, pendulum rod 8 is located between two drive pieces 6, the pendulum rod 8 left and right sides is connected rather than the drive piece 6 of corresponding side through the pull rod 9 of direction about respectively and is articulated.

In order to limit the swing rod 8, the upper end of the base plate 1 is provided with a U-shaped plate 10 with a downward opening, the rotating shaft 7 is coaxially provided with a ratchet wheel 11 positioned above the swing rod 8, an L-shaped plate 12 is arranged in the U-shaped plate 10, the L-shaped plate 12 is rotatably connected with a pawl 14 capable of being meshed with the ratchet wheel 11 through a rotating column 13 in the vertical axial direction, and the free end of the pawl 14 is connected with the L-shaped plate 12 through a pressure spring 15.

In order to ensure that the clamping block 2 can only slide left and right on the bottom plate 1, the front end of the bottom plate 1 is provided with a T-shaped groove 16 in the left and right direction, and the rear end of the clamping block 2 is provided with a T-shaped block 17 which can slide in the T-shaped groove 16.

In order to facilitate the rotation of the rotating shaft 7 and the rotating column 13, the upper end of the rotating shaft 7 penetrates through the U-shaped plate 10 and is provided with a handle 18, and the upper end of the rotating column 13 penetrates through the U-shaped plate 10 and is coaxially provided with a rotating column 19.

In order to facilitate the resetting of the clamping blocks 2, the left end and the right end of the bottom plate 1 are respectively provided with a resetting plate 20 in the front-back direction, and the resetting plate 20 is connected with the clamping blocks 2 on the corresponding side through tension springs 21.

In order to increase the comfort of the patient, the front end of the bottom plate 1 is provided with a head cushion 22 positioned between the two clamping blocks 2.

The utility model discloses when using, place bottom plate 1 in patient's head position, make the patient face up lie flat on nuclear magnetic resonance appearance service creeper, make patient's head rest on headrest 22, anticlockwise rotation handle 18, handle 18 drives pivot 7 anticlockwise rotation, pivot 7 drives pendulum rod 8 anticlockwise rotation, the pendulum rod 8 left end swings forward, the pendulum rod 8 left end drives left drive piece 6 through left pull rod 9 and slides right, left drive piece 6 drives the T-shaped piece 17 of its corresponding side and slides right in T-slot 16, the pendulum rod 8 right end swings backward, the pendulum rod 8 right end drives the drive piece 6 on right side through right pull rod 9 and slides left, the drive piece 6 on right side drives the T-shaped piece 17 of its corresponding side and slides left in T-slot 16;

meanwhile, the rotating shaft 7 drives the ratchet wheel 11 to rotate anticlockwise, the ratchet wheel 11 drives the left end of the pawl 14 to swing backwards, the right end of the pawl 14 swings forwards to extrude the pressure spring 15, after the ratchet wheel rotates by one ratchet of the ratchet wheel 11, the right end of the pawl 14 moves backwards due to the backward elasticity of the pressure spring 15, the left end of the pawl 14 swings forwards and is clamped between two adjacent teeth of the ratchet wheel 11 again to prevent the ratchet wheel 11 from rotating clockwise to limit the ratchet wheel 11, the two clamping blocks 2 slide relatively, after sliding for a certain distance, the arc surfaces of the clamping blocks 2 are contacted with the head of a patient and clamp the head of the patient inwards, meanwhile, the ear muffs 5 are contacted with the ears of the patient to clamp the ears of the patient, the patient is prevented from hearing noise generated by instruments, the ear muffs 5 slide outwards in the round holes 3 due to pressure when clamping the ears of the patient, the springs 4 are compressed outwards, and, the clamping block 2 continues to clamp the head of the patient, and the handle 18 stops rotating when the head of the patient is clamped to a force which is considered to be proper by the patient, so that the head of the patient is limited by the clamping block 2, the head of the patient cannot move or rotate, and artifacts caused by shaking during examination are avoided;

after the examination is completed, medical personnel rotate the rotary column 19 clockwise, the rotary column 19 drives the rotary column 13 to rotate clockwise, the rotary column 13 drives the left end of the pawl 14 to swing backwards, the pawl 14 is out of contact with the ratchet wheel 11, the pawl 14 relieves the limit to the ratchet wheel 11, meanwhile, due to the fact that the pawl receives the outward elasticity of the tension spring 21, the two clamping blocks 2 slide outwards, the rotary column 19 is loosened when the clamping blocks 2 slide outwards to the initial position, the pawl 14 resets to limit the ratchet wheel 11 again, the clamping blocks 2 are connected to relieve the limit to the head of a patient at the moment, and the patient leaves an instrument.

The utility model discloses well ear muff 5 is made for soft sound insulation material, and the purpose is in order to increase patient's comfort level, isolated noise.

Claims

1. The utility model provides a nuclear magnetic resonance head fixing device, including bottom plate (1), a serial communication port, bottom plate (1) front end left and right sides sliding connection has the grip block (2) of fore-and-aft direction respectively, the opposite face of two grip blocks (2) is the arcwall face of indent, axial round hole (3) about having seted up on grip block (2), two round hole (3) openings are relative, round hole (3) bottom surface is equipped with ear muff (5) through spring (4), grip block (2) rear end is equipped with drive piece (6) of fore-and-aft direction, axial pivot (7) rotate about being connected with pendulum rod (8) of direction about on bottom plate (1), pendulum rod (8) are located between two drive pieces (6), pendulum rod (8) left and right sides are connected rather than the drive piece (6) of corresponding side are articulated through the pull rod (9) of direction about respectively.

2. The head fixing device for nuclear magnetic resonance according to claim 1, wherein a U-shaped plate (10) with a downward opening is arranged at the upper end of the bottom plate (1), a ratchet wheel (11) positioned above the swing rod (8) is coaxially arranged on the rotating shaft (7), an L-shaped plate (12) is arranged in the U-shaped plate (10), a pawl (14) capable of being meshed with the ratchet wheel (11) is rotatably connected to the L-shaped plate (12) through a rotating column (13) in the vertical axial direction, and the free end of the pawl (14) is connected with the L-shaped plate (12) through a pressure spring (15).

3. The head fixing device for nuclear magnetic resonance according to claim 1, wherein the front end of the bottom plate (1) is provided with a T-shaped groove (16) in the left-right direction, and the rear end of the clamping block (2) is provided with a T-shaped block (17) capable of sliding in the T-shaped groove (16).

4. The NMR head fixture according to claim 1, wherein the upper end of the rotating shaft (7) penetrates through the U-shaped plate (10) and is provided with a handle (18), and the upper end of the rotating column (13) penetrates through the U-shaped plate (10) and is coaxially provided with a rotating column (19).

5. The NMR head fixture according to claim 1, wherein the left and right ends of the base plate (1) are respectively provided with a reset plate (20) in the front-back direction, and the reset plates (20) are connected with the clamping blocks (2) on the corresponding sides through tension springs (21).

6. A nmr head fixture according to claim 1, characterised in that the base plate (1) is provided with a head pad (22) at the front end between the two clamping blocks (2).