CN214259644U

CN214259644U - Infant nuclear magnetic resonance examination hearing protection device

Info

Publication number: CN214259644U
Application number: CN202023099393.6U
Authority: CN
Inventors: 梁娜; 陈康; 张凌; 黄依宁; 陈君辉; 张羲娥; 邓珍萍; 王杰; 郭朝跃; 郑裕
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-09-24
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses an infant's nuclear magnetic resonance inspection hearing protection device belongs to medical imaging equipment technical field, include: the device comprises a base used for positioning a hearing protection device, an ear protection cover used for protecting the hearing of an infant, and a telescopic rod used for adjusting the distance between the base and the ear protection cover; the telescopic rod comprises a threaded column, a knob and a supporting rod, the knob is installed at one end of the supporting rod, and the knob can rotate at the end part of the supporting rod; the knob is provided with an internal thread matched with the threaded column, and the knob and the threaded column are installed in a matched mode. The utility model discloses can let the ear protection casing that is used for protecting infant's hearing laminate all the time on infant's ear, can play the effect of support and centre gripping to infant's head simultaneously, avoid infant to take place the head removal unconsciously when receiving the noise stimulation through the decay.

Description

Infant nuclear magnetic resonance examination hearing protection device

Technical Field

The utility model belongs to the technical field of medical imaging equipment, concretely relates to infant's nuclear magnetic resonance inspection hearing protection device.

Background

Mri is a relatively new medical imaging technique that has been formally used clinically since one, nine, eight or two years internationally. With the development of recent years, the inspection efficiency is improved and the inspection accuracy is higher. However, a further disadvantage has not been overcome so far, namely noise.

Although the time for nuclear magnetic detection has been greatly shortened at present, one detection still requires a time of ten minutes to several tens of minutes. In addition, during the medical image detection of the human body, the patient is required to keep the detection part still. Because the final image is superimposed from scans of different frequencies, if the patient moves during the scan, the resulting image will be distorted, resulting in a detection failure.

Adult nervous system is ripe, and is stronger to the controllability of health, has certain tolerance to the noise when detecting, can control the health and keep motionless. However, for infants, the body and the nervous system are not completely developed, and on one hand, the noise is large and the hearing is easy to be damaged; on the other hand, even if the infant wears the cotton ball or the earmuff, some noise can be heard, which is easy to cause discomfort of the infant, thereby inducing the head to move.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that prior art exists, the utility model aims to provide an infant's nuclear magnetic resonance inspection hearing protection device can let the ear protection casing that is used for protecting infant's hearing laminate all the time on infant's ear, can play the effect of support and centre gripping to infant's head simultaneously, avoids infant to take place the head to remove unconsciously when receiving the noise stimulation through the decay.

The utility model discloses the technical scheme who adopts does: an infant nmr examination hearing protection device comprising: the device comprises a base used for positioning a hearing protection device, an ear protection cover used for protecting the hearing of an infant, and a telescopic rod used for adjusting the distance between the base and the ear protection cover; the telescopic rod comprises a threaded column, a knob and a supporting rod, the knob is installed at one end of the supporting rod, and the knob can rotate at the end part of the supporting rod; the knob is provided with an internal thread matched with the threaded column, and the knob and the threaded column are installed in a matched mode.

Preferably, one end of the supporting rod is connected with the base or the ear protection cover, the other end of the supporting rod is provided with an annular boss, and the diameter of the annular boss is larger than the outer diameter of the thread of the threaded column; the outer surface of the annular boss is fixedly connected with an annular convex edge, and the knob is provided with a clamping groove matched with the annular convex edge; in the installation state, the annular convex edge is clamped in the clamping groove.

Preferably, at least one axial groove a of stepping down has been seted up on the surface of bracing piece, the screw thread post comprises at least one and the support bar a of stepping down groove a adaptation, and the screw thread setting is in the surface of support bar a.

Furthermore, at least one axial groove b of stepping down has been seted up on the surface of screw thread post, the bracing piece comprises at least one and the support bar b of stepping down groove b adaptation.

Further, the thread of the threaded column is a self-locking thread.

Preferably, the base is a suction cup.

Preferably, the edge of the sucker is connected with a rubber strip.

Further, base and ear's protection casing are the silica gel material, screw thread post, knob and bracing piece are the plastics material.

The utility model has the advantages that:

1. the utility model discloses an infant's nuclear magnetic resonance inspection hearing protection device, the size can be adjusted, can be applicable to the infant of different head sizes.

2. The utility model discloses an infant nuclear magnetic resonance inspection hearing protection device can let the ear protection casing that is used for protecting infant's hearing laminate all the time on infant's ear, improves the protection effect.

3. The utility model discloses an infant's nuclear magnetic resonance inspection hearing protection device can play the effect of support and centre gripping to infant's head, avoids infant to involuntarily take place the head and remove when receiving the noise amazing through the decay to greatly improve infant's head detection's rate of accuracy and success rate.

Further advantageous effects are explained in the examples section.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the support rod of FIG. 2;

FIG. 4 is a cross-sectional view of the knob;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 6 is an exploded view of fig. 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example 1:

as shown in fig. 1, 2, 3 and 4, the hearing protection device for nmr examination of infants disclosed in the present embodiment includes: a base 100 for positioning the hearing protection device, an ear protection cap 300 for protecting the hearing of the infant, a telescopic rod 200 for adjusting the distance between the base 100 and the ear protection cap 300; the telescopic rod 200 comprises a threaded column 220, a knob 210 and a support rod 230, wherein the knob 210 is installed at one end of the support rod 230, and the knob 210 can rotate at the end of the support rod 230; the knob 210 is provided with an internal thread matched with the threaded column 220, the knob 210 and the threaded column 220 are installed in a matched mode, and the knob 210 and the threaded column 220 are enabled to generate axial relative displacement through rotation of the knob 210, so that the length of the telescopic rod 200 can be adjusted. Specifically, one end of the support rod 230 is connected to the base 100 or the ear guard 300, and accordingly, the threaded post 220 is connected to the ear guard 300 or the base 100 (only one of which is shown in the figures of embodiment 1 and embodiment 2, and the other way around is a matter of routine skill for those skilled in the art and will not be repeated and illustrated herein). The other end of the support rod 230 is provided with an annular boss 231, and the diameter of the annular boss 231 is larger than the outer diameter of the thread of the threaded post 220, so that the threaded post 220 can smoothly pass through the counter bore at the left end of the knob 210, as shown in fig. 4. The outer surface of the annular boss 231 is fixedly connected with an annular convex edge 232, and the knob 210 is provided with a clamping groove 211 matched with the annular convex edge 232; in the installed state, the annular protrusion 232 is engaged with the engaging groove 211, so that the knob 210 is installed on the supporting rod 230 and can rotate freely relative to the supporting rod 230.

To achieve the extension and retraction of the telescopic rod 200, the relative position of the control knob 210 and the threaded post 220 is actually controlled by rotating the knob 210. During rotation of the knob 210, if the threaded post 220 is also rotated with the knob 210 without relative rotational movement therebetween, then no axial relative movement occurs. Therefore, in order to ensure that the threaded post 220 does not rotate during the rotation of the knob 210, at least one axial recess a233 is formed on the surface of the support rod 230, and the threaded post 220 is composed of at least one support bar a221 matched with the recess a233, and the thread is disposed on the outer surface of the support bar a 221. The figure shows that there are 4 abdicating grooves a233, and the support bars a221 are also 4, which is only used for example, and only 1 is actually possible, and multiple ones are also possible. Although the threaded post 220 formed by the support bar a221 is not a solid cylinder and is not highly rigid in the radial direction, the support bar 230 can provide radial support for the support bar a221 after the support bar a221 is inserted into the relief groove a233 on the surface of the support bar 230, thereby ensuring that the threads of the support bar a221 are engaged with the internal threads of the knob 210, as shown in fig. 4.

The use method comprises the following steps:

infant lies flat in the inspection bed, concave type head coil department is arranged in to the head, take the infant nuclear magnetic resonance examination hearing protection device of two this embodiments, arrange infant left and right sides ear in respectively with two devices, utilize ear protection casing 300 parcel whole ear, then the knob 210 of rotatory telescopic link 200, make telescopic link 200 extension, on the coil wall of base 100 top both sides, not only played the effect of fixed infant head, still make ear protection casing 300 closely adhere to in the infant ear and play the effect of protection hearing. Because the length of the telescopic rod 200 is adjustable, the telescopic rod can be suitable for children patients with different head sizes. Through operation knob 210, can also adjust the clamping force to the infant, it is very convenient.

Example 2:

as shown in fig. 5 and 6, in this embodiment, a local adjustment is made on the basis of embodiment 1, but the invention idea is the same, and the difference is that the position of the slot and the position of the support strip are exchanged. Specifically, at least one axial yielding groove b222 is formed in the surface of the threaded column 220, and the support rod 230 is composed of at least one support bar b234 adapted to the yielding groove b 222. Although the support bar 230 formed by the support bar b234 is not a solid cylinder and has a radial rigidity, after the support bar b234 is inserted into the relief groove b222 on the surface of the threaded post 220, the threaded post 220 can provide a radial support effect for the support bar b234, so as to ensure the rigidity of the annular boss 231 and the annular boss 232 at the end of the support bar b234, and ensure that the annular boss 232 is engaged with the locking groove 211 of the knob 210, as shown in fig. 4.

The present example was used in the same manner as in example 1, and the description thereof is not repeated.

In order to avoid the length change of the telescopic rod 200 in the detection process, the threads of the threaded column 220 are self-locking threads, so that the phenomenon that the telescopic rod 200 is shortened due to the reaction force and the failure of the device is caused can be avoided.

To further increase the stability of the clamping of the device, the base 100 may be a suction cup. The sucking disc adsorbs in the coil wall inboard, and neither easy mode removes, also difficult emergence is rotated, can avoid the operation in-process, and the condition that rotatory knob 210 became invalid takes place.

In order to conveniently disassemble the device, after use, the knob 210 is directly and reversely rotated, so that the telescopic rod 200 is shortened, and the infant patient can be released. Therefore, the edge of the sucker is specially designed to be connected with a rubber strip 101, and the sucker can be easily leaked by pulling up the rubber strip 101, so that the device is convenient to take down.

Because use under the nuclear magnetic resonance environment, base 100 and ear protection casing 300 can select for use the silica gel material. The threaded post 220, the knob 210 and the support rod 230 may be made of plastic, and since there is relative friction between these three components, plastic with self-lubricating properties, such as teflon, nylon, polyoxymethylene, polyimide, etc., is preferred.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. An infant nuclear magnetic resonance examination hearing protection device, comprising:

a base (100) for positioning a hearing protection device;

an ear shield (300) for protecting the hearing of an infant;

a telescopic rod (200) for adjusting the distance between the base (100) and the ear protection cover (300); the telescopic rod (200) comprises a threaded column (220), a knob (210) and a supporting rod (230), wherein the knob (210) is installed at one end of the supporting rod (230), and the knob (210) can rotate at the end of the supporting rod (230); the knob (210) is provided with an internal thread matched with the threaded column (220), and the knob (210) and the threaded column (220) are installed in a matched mode.

2. The hearing protection device for infant nuclear magnetic resonance examination of claim 1, wherein one end of the support rod (230) is connected with the base (100) or the ear shield (300), the other end of the support rod (230) is provided with an annular boss (231), and the diameter of the annular boss (231) is larger than the external diameter of the thread of the threaded column (220); the outer surface of the annular boss (231) is fixedly connected with an annular convex edge (232), and the knob (210) is provided with a clamping groove (211) matched with the annular convex edge (232); in the installation state, the annular convex edge (232) is clamped in the clamping groove (211).

3. The hearing protection device for infant nuclear magnetic resonance examination as claimed in claim 2, wherein the surface of the support bar (230) is provided with at least one axial abdicating groove a (233), the threaded post (220) is composed of at least one support bar a (221) matching with the abdicating groove a (233), and the thread is arranged on the outer surface of the support bar a (221).

4. The hearing protection device for infant nuclear magnetic resonance examination as claimed in claim 2, wherein the threaded column (220) has at least one axial recess b (222) formed on the surface thereof, and the support bar (230) is composed of at least one support bar b (234) adapted to the recess b (222).

5. The hearing protection device for infant nuclear magnetic resonance examination according to any one of claims 1 to 4, wherein the thread of the threaded post (220) is a self-locking thread.

6. The hearing protection device for infant nmr examination according to any of claims 1-4, wherein the base (100) is a suction cup.

7. The hearing protection device for infant nmr examination according to claim 6, wherein the rubber strip (101) is connected to the edge of the sucker.

8. The hearing protection device for infant nmr examination according to any one of claims 1-4, wherein the base (100) and the ear shield (300) are made of silica gel, and the threaded post (220), the knob (210) and the support rod (230) are made of plastic.