JP5807869B2 - Radiation protector - Google Patents

Description

  The present invention relates to a radiation protector.

  Conventionally, since brain neurons are highly differentiated cells, it has been considered that cell damage due to radiation exposure is unlikely to occur except for radiation exposure due to high-dose radiation therapy or the like. However, in recent years, it has become clear that neuronal neurogenesis is always occurring among human brain neurons, especially in the region of the dentate gyrus of the hippocampus, which is a region that plays an important role in memory formation. It has become clear that neurogenesis is always occurring. In addition, since neoplastic cells are immature cells, they are very sensitive to radiation, and it is known that when irradiated with radiation, there are obstacles in the formation, growth, survival, etc. of neoplastic cells. It has become. Furthermore, it is known that the neonatal cells of the hippocampus are easily damaged by irradiation with a low dose of X-rays. In animal experiments, the neonatal cells of the hippocampus are irradiated with radiation, causing radiation damage and reducing cognitive function. (See Non-Patent Documents 1 to 5).

  Recently, human bodies such as craniotomy or thoracotomy are used for the treatment of circulatory system such as cerebrovascular disorders (subarachnoid hemorrhage, cerebral aneurysm, cerebral artery stenosis and cerebral arteriovenous malformation) and angina pectoris. Rather than a surgical treatment with a high degree of invasion, minimally invasive endovascular treatment (IVR) using a catheter or the like has been actively performed in consideration of the prognosis after surgery. In IVR, treatment is performed with a catheter or the like reaching the affected area while viewing an X-ray image or the like, so that not only medical workers but also patients receive a large amount of radiation exposure. Therefore, in recent years, guidelines for preventing cataracts during IVR, guidelines for protecting skin disorders, and the like have come out (see Non-Patent Documents 6 to 7).

Marko NF. et al. , "Radiotherapeutic Neurocognitive conjugations in the treatment of brain metastases." Nat. Rev. Clin. Oncol. 2010 Apr; 7 (4) p. 185-186 Kim JS. et al. , "Transient impairment of hippocampus-dependent learning and memory in relative low-dose of accumulatively stimulated idiosyncratic pioneering in the associated Laber J. et al. et al. , "Radiation-induced cognitive impulses are associated with changes in hippocampal neurogenesis." Gan HK. et al. , "Cognitive Functioning After Radiotherapy or Chemoroditherapy for Head-and-Neck Cancer." Int. J. et al. Radiat. Oncol. Biol. Phys. Aug. 12, 2010 Bruel-Jungerman et al. , (2007). “Adult Hippocampal Neurogenesis, Synthetic Plasticity and Memory: Facts and Hypothesis.” Reviews in the Neurosciences Vol. 18 p. 93-114. 2007 Medical Radiation Protection Liaison Council, “Guidelines for Prevention of Radiation Skin Injury Associated with IVR” (2004) Nagai Ryozo et al., “Guidelines on Radiation Exposure in Cardiovascular Medicine”, Circulation Journal Vol. 70, Suppl. IV, 2006.

  However, as mentioned above, radiation-induced damage to the eyes and skin is widely known through the publication of guidelines, etc., and preventive measures for this have been taken. However, it is important for the formation of the brain, especially memory. At present, guidelines for prevention of cognitive dysfunction caused by radiation in the hippocampus, which plays a role, have not yet been published.

  The present invention has been made in view of the above problems, and an object thereof is to provide a radiation protector for protecting the hippocampus from radiation exposure.

The above object of the present invention is achieved by the following means.
(1) That is, this invention is a radiation protector provided with the shielding part which shields the radiation which injects into a hippocampus.
(2) The present invention is also characterized in that the shielding part includes a head shielding part that shields radiation incident from the head and a face shielding part that shields radiation incident from the face (1). ).
(3) The radiation according to (1) or (2), wherein the head shielding unit is configured to cover at least the top of the head, the forehead and the temporal region. It is a protector.
(4) The present invention is the radiation protector according to any one of (1) to (3), wherein the head shielding portion is configured with an opening at the back of the head.
(5) The radiation protector according to any one of (1) to (4), wherein the face shielding unit is configured to cover at least the eye part and its periphery. It is.
(6) The radiation protector according to any one of (1) to (4), wherein the face shielding unit is configured to cover the entire face.
(7) In the invention, any one of (1) to (6) is characterized in that the face shielding part is pivotally supported at the end part by the head shielding part. It is a radiation protector of description.
(8) The radiation protector according to any one of (1) to (6), wherein the head shielding part and the face shielding part are integrally formed.
(9) The radiation protector according to any one of (1) to (8), wherein the shielding part includes a radiation shielding material made of metal, lead-containing synthetic resin, or lead-containing glass.
(10) The radiation protector according to any one of (1) to (9), wherein the face shielding portion is transparent.
(11) The present invention is further characterized in that at least a part of the inner surface of the head shielding portion further includes a cushioning material having elasticity and water absorption, and is in contact with the head via the cushioning material (1) ) To (10).
(12) In the invention, any one of (1) to (11) is characterized in that the head shielding part further includes a belt-like fixing means for fixing the radiation protector to the head. The radiation protector described in 1.

  According to the radiation protector of the present invention, since the shielding portion that shields radiation incident on the hippocampus is provided, exposure of the hippocampus due to radiation can be prevented, and memory problems and the like of medical workers can be effectively prevented.

1 is a schematic side view showing an overall configuration of a radiation protector 10 according to a first embodiment of the present invention. It is a front view of the radiation protector 10 concerning 1st Embodiment. It is a rear view of the radiation protector 10 concerning 1st Embodiment. It is a side view of the radiation protector 10 concerning the 2nd Embodiment of this invention. It is a side view of the radiation protector 10 concerning the 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic side view showing the overall configuration of a radiation protector 10 according to the first embodiment of the present invention. As shown in FIGS. 1 to 3, the radiation protector 10 according to the present embodiment includes a head shielding part 100 and a face shielding part 200.

  The head shielding unit 100 is configured to cover the top of the head, the frontal head, and both heads, and has a configuration in which the back of the head is opened. Even if the occipital region is configured to be open, as long as the crown, frontal region, and temporal region are covered, radiation incident on the hippocampus 300 from the head can be sufficiently shielded, and the user can It is possible to prevent the protector 10 from being easily attached to the head, and to prevent the protector 10 from being steamed or heated. However, it is good also as a structure which covered the occipital region in addition to the top of head, the frontal region, and the both-sided region.

  The temporal covering portion of the head shielding portion 100 is configured to cover the entire ear to block radiation from the temporal region, and further configured to protrude toward the occipital side according to the shape of the hippocampus 300. It is.

  Examples of materials that can be used as the head shielding unit 100 include metals, lead-containing synthetic resins, and lead-containing glass. Examples of the metal include lead, stainless steel, tungsten, a tungsten alloy, and a tungsten composite material. Examples of the lead-containing synthetic resin include a lead-containing acrylic resin and a lead-containing methacrylic resin. However, instead of using lead-containing synthetic resin, a laminate of metal or lead-containing synthetic resin coated or bonded to synthetic resin such as ABS resin, polycarbonate resin, polyethylene resin, FRP resin (reinforced plastic), polypropylene resin, etc. It may be used.

  The face shielding part 200 is configured to cover the eye part and the periphery thereof and to be open from the nose to the bottom. Even if the lower part is opened from the nose, the radiation that is incident on the hippocampus 300 from the face can be sufficiently shielded and the radiation protector 10 is attached as long as the eye part and its periphery are covered. It is not suffocating, and it is easy to talk, and the face shielding part 200 is not cloudy.

  Both ends of the face shielding unit 200 are pivotally supported by the temporal covering portion of the head shielding unit 100 via the pivot support 500 so as to be rotatable. Thereby, the face shielding unit 200 is slid up and down with the shaft support unit 500 as a fulcrum, so that the face can be opened by moving to the frontal region. However, as shown in FIG. 4, the face shielding unit 200 may be configured to cover the entire face.

  The face shielding unit 200 may be made of the same material as that used for the head shielding unit 100 and transparent. By making it transparent, good visibility can be secured.

  Note that the head shielding unit 100 and the face shielding unit 200 may be configured integrally as shown in FIG. 5 without being configured separately.

  Returning to FIGS. 1 to 3, cushions 600 and 700 having elasticity and water absorption are provided inside the top cover portion and the front cover portion of the head shielding portion 100. Thereby, when the radiation protector 10 is attached to the head, the head does not directly contact the head shielding part 100, so that a comfortable wearing feeling is obtained and moisture such as sweat is absorbed by the cushions 600 and 700. It is absorbed appropriately and the inside of the head shielding part 100 does not get steamed. Examples of the material of the cushions 600 and 700 include polyurethane.

  As shown in FIG. 3, a pair of belt-like fixing means having one end fixed to the lower end of the both-sides head covering portion of the head shielding portion 100 and a locking portion 800 at the other end of the head shielding portion 100. 400 is provided. The locking part 800 is composed of, for example, a hook-and-loop fastener, a buckle, a belt, a button, a hook and the like. Moreover, you may comprise so that an edge part may be tied and fastened, without providing the latching | locking part 800. FIG. Further, these fixing means 400 may have a length adjusting mechanism.

  In addition, the radiation protector of this invention is not limited to above-described embodiment, Of course, various changes can be added within the range which does not deviate from the summary of this invention.

  Next, the radiation protector of the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

The radiation protector 10 shown in FIGS. 1-3 is produced using lead-containing acrylic resin (lead equivalent 0.07 mmPb), and X-ray shielding rate when X-rays are irradiated for 10 seconds using an angiography apparatus manufactured by Shimadzu Was measured. For comparison, other radiation protection devices (radiation protection apron and thyroid protection throat application) were similarly measured for the X-ray shielding rate when X-rays were irradiated for 10 seconds. A UNFORS dosimetry device was used to measure the dose. Although X-ray irradiation was performed three times, only the average value of irradiation dose was shown in the table.

  As is clear from Table 1, the X-ray shielding rate of the radiation protector of the present invention was 58%, which was higher than that of the apron (54%) and throat application (47%).

  As described above, the radiation protector of the present invention shields radiation incident on the hippocampus, and is therefore extremely useful when used as a radiation protector for preventing exposure of the hippocampus to radiation.

DESCRIPTION OF SYMBOLS 10 Radiation protector 100 Head shielding part 200 Face shielding part 300 Hippocampus 400 Fixing means 500 Axial support part 600 Cushion 700 Cushion 800 Face fastener

Claims (8)

A head shielding unit that includes a head covering unit, a frontal covering unit, and a temporal covering unit that shields radiation incident on the hippocampus from the head; and a face shielding unit that shields radiation incident on the hippocampus from the face. A radiation protector having a shielding part consisting of:
A radiation protector characterized in that the occipital side of the head shielding part is open on the occipital side, and the temporal covering part protrudes toward the occipital side . The radiation protector according to claim 1 , wherein the face shielding unit is configured to cover at least an eye part and a periphery thereof. The radiation protector according to claim 1 , wherein the face shielding unit is configured to cover the entire face. The face shield section, radiation protector according to any one of claims 1 to 3, characterized in that the end portion is rotatably supported on the head shield portion. Radiation protector according to any one of claims 1 to 3, characterized in that formed by integrally molded with the face shield portion and the head portion shielding portion. The shielding portion is a metal, radiation protector according to any one of claims 1 to 5, characterized in that it comprises a radiation shielding material made of lead-containing synthetic resin or leaded glass. The face shield section, radiation protector according to any one of claims 1 to 6, characterized in that it is transparent. Further comprising a cushioning material having at least a portion of the inner surface of the head shield portions elasticity and water absorption property, any one of claims 1 to 7, characterized in that contact with the head via the cushion material The radiation protector described in 1.

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