JP7092302B2 - Radiation shielding finger cot - Google Patents

Description

The present invention relates to a radiation shielding finger cot that protects the fingertips of medical personnel engaged in medical practice under radiation from radiation.

Traditionally, doctors, nurses, X-ray technicians, etc. who handle radiation (hereinafter referred to as "medical workers") have many opportunities for exposure. For example, when taking an X-ray photograph, if the target is a child or an animal, it is necessary to hold it so that it does not move at the time of taking the picture. Further, in recent years, the aspect of performing IVR (Interventional Radiology: Interventional Radiology) is increasing. In this treatment, the treatment is performed while seeing through with radiation, and at least work such as perforation is performed.

In such cases, efforts will be made to keep the patient's exposure dose below the unacceptable dose. However, since medical workers perform such work every day, the exposure dose tends to be high. Therefore, healthcare professionals engaged in such treatments need to take radiation shielding measures.

The chest and lower limbs have tools such as a lead-containing apron. In addition, goggles that protect the crystalline lens of the eye, a suspended lead-transparent tsuitate with an angiography device, and a drape attached to a sleeper are used to protect the trunk and thyroid gland. However, the hand is the part where the work is done directly, and it is a part that is difficult to shield. Therefore, the exposure dose of the hands is relatively large.

As a method of suppressing the exposure of the hands, it has been reported that the gloves using lead, which has been proven as a radiation shielding material, reduced the exposure of the hands by 44% (Non-Patent Document 1). However, gloves using lead have poor flexibility and work efficiency is significantly impaired. Lead is also harmful.

Therefore, as a more workable hand protection tool, Patent Document 1 describes 50 to 80% of X-rays generated at a voltage of 60 to 100 kVp by a dipping method using a dispersion of natural rubber latex containing tungsten powder. Radiation protection gloves that can absorb radiation are disclosed. Tungsten powder can absorb radiation and reduce exposure to fingertips.

Patent Document 2 also discloses gloves having a high tungsten content. This glove is formed by cutting a sheet containing granular tungsten into a pair of glove shapes and laminating them.

Patent Document 3 also discloses gloves containing tungsten. Here, the problem that when the proportion of tungsten is increased, the tungsten particles are settled and the shielding property is deteriorated is taken up. Then, based on the finding that the tungsten particles do not settle when the tungsten powder is dispersed in a high-viscosity resin emulsion, gloves having a high tungsten content are completed.

US Pat. No. 5,01354 Special Table No. 06-511315 Japanese Unexamined Patent Publication No. 2001-124892

Nickoloff, Edward L. et al. Radiation DOESS DURING CT Fluoroscopy December 2000-Volume 79-Issue 6-pp 675-681

Since the radiation shielding gloves according to Patent Documents 1 to 3 have a shape that covers the tip of the wrist, the entire hand can be shielded from radiation. However, since it covers the entire finger, it is difficult to perform detailed work such as drilling and tying threads. This is because lead-containing gloves are thick and have poor flexibility.

In addition, for medical use, gloves to which the patient's body fluid has once adhered cannot be reused. In particular, since the gloves disclosed in the patent document have tungsten particles dispersed in rubber, the base material is basically a resin (rubber) for breathing. Therefore, it is not possible to completely remove the protein once attached.

On the other hand, tungsten is by no means an inexpensive material, so it is not practical from an economical point of view to dispose of tungsten-containing gloves.

The present invention has been conceived in view of the above problems, and is a finger cot that reduces the exposure dose of fingertips while ensuring fine workability, although the radiation shielding range is not as large as that of gloves.

More specifically, the radiation shielding finger cot according to the present invention is
Consists of a single layer of elastomer in which tungsten powder is dispersed,
The cap part where the fingertips are inserted and
It is characterized by having a guard portion that is continuously extended to the cap portion and has the same composition as the cap portion .

In the radiation shielding finger cot according to the present invention, the distal phalanx (distal phalanx) of the finger is inserted into the cap portion, and the cap portion does not extend to the portion corresponding to the proximal phalanx, so that the movement of the first joint of the finger is hindered. There is no. As a result, the range of motion of the fingers is wide and workability is improved.

Further, in the radiation shielding finger cot according to the present invention, since the guard portion can be extended to the cap portion, the radiation shielding area can be expanded without hindering the movement of the finger.

Further, in the radiation shielding finger cot according to the present invention, a sensitizing portion having a thin thickness or an opening (through hole) is formed in a portion of the cap portion into which the end segment of the finger is inserted, which is in contact with the finger pad. , It does not interfere with the feeling of fingertips even through surgical gloves. Therefore, it is possible to perform detailed work while blocking radiation.

Further, since the radiation shielding finger cot according to the present invention shields the fingertip and its surroundings, surgical gloves can be worn on the fingertip. As a result, the radiation shielding finger cot itself does not come into contact with the patient's body fluid and can be reused for a long period of time.

In addition, since the radiation-shielding finger cot does not cover the entire tip from the wrist, it has a wide range of motion and does not hinder the movement of the fingers.

It is a figure which shows the finger cot which concerns on this invention. It is a figure which shows the modification of the finger cot. It is a figure which shows the other modification of the finger cot. It is a figure which shows the outer shape and the wearing state of the finger cot produced in the Example. It is a figure which shows the structure for measuring the X-ray shielding rate of the finger cot produced in an Example. It is a graph which shows the measurement result of the X-ray shielding rate of the finger cot produced in the Example. It is a figure which shows the structure which measures the radiation shielding ability at the time of using the actual angiography of the finger cot produced in the Example. It is a graph which shows the measurement result of the X-ray shielding rate in the fluoroscopic mode and the photographing mode in angiography.

The radiation shielding finger cot according to the present invention will be described below with reference to drawings and examples. The following description exemplifies one embodiment and one embodiment of the present invention, and the present invention is not limited to the following description. The following description can be modified without departing from the spirit of the present invention.

FIG. 1A shows the appearance of a radiation shielding finger cot (hereinafter, simply referred to as “finger cot”) according to the present invention. Further, FIG. 1 (b) shows a cross-sectional view taken along the line AA of FIG. 1 (a). The finger cot 1 has a cap portion 10 (see FIG. 2A). The cap portion 10 is molded into a bag shape having an opening 10a and a closed back 10b. The end segment of the user's finger (approximately between the fingertip and the first joint) is inserted into the cap portion 10 from the opening 10a. The side wall 10c of the cap portion 10 is completely closed. That is, it is not possible to go inside the cap portion 10 through the side wall 10c from the outside of the cap portion 10. In the variation of the present invention described later, a through hole may be provided in the side wall 10c of the cap portion 10.

The finger cot 1 is used by inserting the end segment of the finger in this way. Therefore, it does not restrain the movement of the first joint of the finger. As a result, the movement of the fingertips becomes smooth, and detailed work can be performed.

FIG. 1B shows a cross section taken along the line AA of FIG. 1A. The finger cot 1 may have a sensitizing portion 12 having a thickness t1 formed thinner than the other portion t0 at the position of the finger pad or having an opening (through hole). The range of the sensitizing portion 12 is preferably 1/2 to 1/5 of the other thickness. Since the sensitizing portion 12 is molded on the finger pad, the feeling when touching an object is easily transmitted to the fingertips, and detailed work is facilitated.

Such a finger cot 1 is manufactured by the following process. First, a raw material containing an elastomer component as a base material and at least one powder of tungsten powder and tungsten compound powder (hereinafter referred to as "tungsten powder or the like") is mixed and dispersed to obtain a mixed raw material. The obtained mixed raw material is molded and crosslinked to obtain the finger cot 1 according to the present invention. The cross-linked mixed raw material is called a "radiation shielding material". The finger cot 1 according to the present invention may be said to be a radiation shielding material molded into a finger cot shape.

The raw materials and each process will be described below.
<Raw materials>
The raw material contains tungsten powder and the like and an elastomer component. In addition, the raw material may include a softening agent and various compounding agents and additives.

(1) Tungsten powder, etc. The density of the final product, finger cot 1, is set from 6.0 Mg / m ³ to 12.0 Mg / m ³ . Within this range, it is easy to mold, and it is possible to increase the amount of radiation absorption and improve the radiation shielding performance. By forming the tungsten used at this time into a powder shape, workability and moldability are improved.

Further, the density of the finger cot 1 is adjusted to the above range in order to obtain the necessary shielding ability because the shielding ability of X-rays and γ-rays is not sufficient when the density is less than 6.0 Mg / m ³ . The thickness of the radiation shielding material (finger cot 1) must be increased. On the contrary, if the density of the radiation shielding material is to be higher than 12.0 Mg / m ³ , it is necessary to further increase the amount of tungsten powder or the like added, which makes kneading and molding difficult and provides appropriate elasticity. You won't be able to get it.

(2) Elastomer component As the elastomer component, a thermoplastic elastomer such as natural rubber, vulture rubber containing synthetic rubber, or styrene-based, olefin / alkene-based, vinyl chloride-based, urethane-based, or amide-based thermoplastic elastomer can be preferably used. Examples of synthetic rubber include isoprene rubber, styrene-butadiene rubber, butadiene rubber, ethylene-propylene ternary copolymer, butyl rubber, chloroprene rubber, chlorosulfonated polyethylene, nitrile rubber, urethane rubber, silicone rubber, acrylic rubber, fluororubber, and the like. Be done.

(3) Softener The softener is an additive used for the purpose of reducing the hardness of the molded product, and the softener also includes a plasticizer. Examples of the softener include mineral oil-based softeners, vegetable oil-based softeners, and synthetic plasticizers, and in particular, mineral oil-based softeners include aromatic-based, naphthen-based, and paraffin-based softeners.

(4) Various compounding agents and additives The radiation-shielding finger sack 1 according to the present invention is a deterioration inhibitor known as a raw material, a cross-linking agent and a sulfurization accelerator necessary for a cross-linking reaction, and a cross-linking promoting aid such as zinc oxide and stearic acid. Agents, anti-aging agents such as phenol-based, amine-based, and quinone-based, fillers such as calcium carbonate-based, clay-based, and barium sulfate-based, reinforcing agents such as carbon black-based, silica-based, and surface-treated calcium carbonate-based, fatty acid esters Processing aids such as, other foaming agents, flame retardant agents, and tackifiers can be appropriately used as compounding agents or additives.

<Mixed dispersion>
Of the raw materials described above, at least the elastomer component, the softener, the tungsten powder and the like are essential raw materials. Therefore, at least the elastomer component, the softening agent, the tungsten powder and the like are mixed and dispersed at once. The compounding agent may be included in the raw material from the beginning of the mixed dispersion. Further, the additive may be added at the end of the mixed dispersion.

For the mixing and dispersing, a known disperser such as a double roll, kneaders, and a Banbury mixer can also be used. Further, these may be combined to carry out mixed dispersion. In particular, a preferred method is a double roll. The mixed and dispersed raw materials are called "mixed raw materials".

<Molding and cross-linking>
The radiation shielding finger cot 1 according to the present invention is molded by filling a mixed raw material in a mold and forming it into a predetermined shape. The molded shielding material has a three-dimensional structure. This is because it is desirable that the shielding material is seamlessly molded for reliable radiation shielding. It is desirable that the finger cot be molded by filling the mold once. However, the finger cot 1 may be divided into a plurality of parts, molded into a mold, and then joined together. Here, the filling in the mold may be any of injection molding, transfer molding, and compression molding.

The finger cot 1 molded into a predetermined shape has a temperature range of 120 ° C. or higher and 180 ° C. or lower, and is crosslinked by heat treatment for 10 minutes or longer and 60 minutes or lower. The radiation shielding finger cot 1 according to the present invention can be obtained by the above materials and steps.

See FIG. FIG. 2 shows a modified example of the radiation shielding finger cot 1 according to the present invention. In the finger cot 2 of FIG. 2A, a strip-shaped guard portion 20 extends from the cap portion 10. The guard portion 20 has a width of 20w that covers the back side of the hand, at least in the fingers. Further, the guard portion 20 has a length of 20 L from the middle phalanx to the proximal phalanx of the finger.

By providing the guard portion 20 on the back side of the finger in this way, the range of radiation shielding is expanded. The guard portion 20 has a size extending from the middle phalanx to the proximal phalanx of the finger, but when the finger cot 2 is attached to the finger and surgical gloves are attached, the guard portion 20 comes into close contact with the finger. And follow the movement of the finger.

The sensitizing portion 12 may also be formed on the finger cot 2. In the case of the finger cot 2, the sensitizing portion 12 may be provided on the guard portion 20 side (see FIG. 2B). This is because in the case of IVR, the radiation may be emitted from below.

Further, the sensitizing portion 12 may be a through hole. This is because thinning the film thickness may not be sufficient when performing a surgical procedure that requires the feel of the fingertips. The sensitizing portion 12 as a through hole can also be applied to FIG. 1 in the previous figure and FIG. 3 in the next figure.

FIG. 3 shows a finger cot 3 when the guard portion 20 and the guard portion 30 are arranged on both the ventral side and the dorsal side of the finger. In the finger cot 3, the guard portion 20 and the guard portion 30 are provided on the finger pad side and the dorsal side. The guard portion 20 and the guard portion 30 are continuous with the cap portion 10, but are not joined to each other on the side portions. There is a gap 25 between the guard portion 20 and the guard portion 30. Therefore, even if the finger cot 3 is attached, the movement of the finger is not hindered.

The guard portion 20 and the guard portion 30 do not have to have the same size and may not have the same thickness. Further, the sensitizing portion 12 may be provided on the finger cot 3.

Examples of the radiation shielding finger cot according to the present invention will be described below. The examples were carried out for the following three points. Let them be Example A, Example B, and Example C, respectively.
<Example A> Radiation shielding ability of the radiation shielding finger cot.
<Example B> Radiation shielding ability when using angiography.
<Example C> Radiation shielding ability in actual IVR inspection.

<Example A>
A radiation shielding finger cot was produced using the following materials as raw materials.

Elastomer component 1st polymer component EPDM 80 parts by weight 2nd polymer component butyl rubber 20 parts by weight Tungsten powder 1800 parts by weight Softener 30 parts by weight Reinforcing agent (carbon black) 10 parts by weight Zinc oxide 5 parts by weight Stealic acid 1 part by weight Processing Auxiliary agent 1 part by weight Anti-aging agent 2 parts by weight UV absorber 1 part by weight Vulcanizer 6.5 parts by weight Total 1956.5 parts by weight

As the first polymer component (EPDM), Esprene 505A manufactured by Sumitomo Chemical Co., Ltd. was used as the elastomer component to be the base material. Butyl rubber IIR # 268 manufactured by JSR Corporation was used as the second polymer component.

As the tungsten powder, tungsten powder W-6 manufactured by Nippon Shinkinzoku Co., Ltd. was used.

As the softener, AH-16 (rubber process oil) manufactured by Idemitsu Kosan Co., Ltd. was used.

Carbon black was used as a reinforcing agent. The carbon black used is Asahi # 70 manufactured by Asahi Carbon Co., Ltd.

Zinc oxide and stearic acid were used as cross-linking promoter aids. Zinc oxide is two kinds of zinc oxide manufactured by Shodo Chemical Industry Co., Ltd. Stearic acid is a beaded stearic acid camellia manufactured by NOF CORPORATION.

The processing aid is Exton K-1 from Kawaguchi Chemical Industry Co., Ltd. As the anti-aging agent, Nocrack 224 and Nocrack AD manufactured by Ouchi Shinko Kagaku Kogyo Co., Ltd. were used in an amount of 1 part by weight each, for a total of 2 parts by weight.

The ultraviolet absorber is the joint chemical ultraviolet absorber Biosoap 100. The vulcanizing agent was used from Sulfurfax PS of Tsurumi Chemical Industry Co., Ltd. and Noxeller series manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

These raw materials were mixed and dispersed using two rolls, filled in a mold, and vulcanized at 160 ° C. for 20 minutes. FIG. 4 shows the shape and appearance of the produced radiation shielding finger cot. FIG. 4A is the size of a radiation shielding finger cot. FIG. 4A is a plan view and FIG. 4A is a side view. The shape is the type shown in FIG. However, the sensitizing portion 12 is not formed on this radiation shielding finger cot. Hereinafter, the radiation shielding finger cot used in this embodiment will be referred to as a finger cot 2.

The finger cot 2 has a total length of 65 mm, and the guard portion 20 has a length of 40 mm. Therefore, the length of the cap portion 10 is 25 mm. The width in a plan view is 20 mm, and the height in a side view is 15 mm, so that the shape is somewhat flattened.

The thickness of the finger cot 2 is 0.5 mm, the weight is 9.0 g, the density is 7.6 Mg / cm ³ , the hardness is 77 (measured by Type-A durometer), and the tensile strength is 4.5 MPa. , The elongation is 400%. The lead equivalent of the radiation shielding material produced with the above composition is 3.32 mm when the radiation shielding material is 5.23 mm with gamma rays.

FIG. 4B is a plan view of a state in which the finger cot 2 is attached to the second finger of a human. The guard portion 20 shows a state in which the guard portion 20 is attached so as to be in the direction of the finger pad. FIG. 4C is a side view. It also shows the state in which the finger is bent. It can be seen that the finger cot 2 is deformed following the bent finger. The guard portion 20 extends to the proximal phalanx.

FIG. 4D is a photograph showing a state in which surgical gloves are worn with the finger cot 2 attached to the fourth finger. Since the finger cot 2 according to the present invention is thin and is in close contact with the finger by the surgical gloves, it does not hinder the movement of the finger.

FIG. 5A shows a method for measuring the X-ray shielding rate of the finger cot 2. FIG. 5B is a partially enlarged view. As the X-ray tube 40 as a radioactivity source, the one used in the diagnostic area (0.6 / 1.2P324DK-85, SHIMADZU, Kyoto, Japan) was used. Further, as the dosimeter 45, a non-connecting X-ray output analyzer (trade name: Piranha, manufactured by RTI Electronics, Molndal, Sweden) was used. This was also used for the dosimeter in the subsequent examples.

Since this dosimeter 45 has the same measurement accuracy as the reference measuring instrument, it can be safely and easily used as a substitute for the reference dosimeter for the tube voltage, dose, and half-value layer in the general imaging region. Further, the dosimeter 45 has a small load on the X-ray tube of the X-ray generator and can perform output control such as an invariance test. As the measurement probe 46, the most sensitive Dose probe dose probe was used.

The measuring probe 46 was placed 120 cm directly below the X-ray tube 40. Further, when measuring the finger cot 2, as shown in FIG. 5B, the measurement probe 46 was covered with the finger cot 2 for measurement. The tube voltage was changed to 60, 80, 100, 120 kV, and the air kerma (mGy / m) was measured 5 times with respect to the presence or absence of the finger cot 2 under the conditions of a tube current of 200 mA and an irradiation time of 40 mA. The X-ray shielding rate (XSR: X-ray Shielding Rate) with and without the finger cot 2 was obtained from the average value of the five measurements from the following equation (1).

Here, "D0" is an air kerma (dose) when the protective equipment is not used, and "D" is an air kerma (dose) when the protective equipment is used. In addition, commercially available lead gloves for medical use having an equal amount of 0.03 lead were also measured and compared in the same manner.

The measurement results are shown in FIG. With reference to FIG. 6, the horizontal axis is the tube voltage (kV) and the vertical axis is the X-ray shielding rate (%). Black circles (●) are for finger cots 2, and black squares (■) are commercially available lead gloves for medical use.

The X-ray shielding rate of the finger cot 2 when the tube voltage was changed to 60-120 kV was 98.0 ± 0.03%, 94.8 ± 0.05%, 92.3 ± 0.12%, respectively. It was 90.1 ± 0.03%. The X-ray shielding rates of commercially available lead gloves for medical use are 69.8 ± 0.39%, 61.0 ± 0.53%, 52.3 ± 0.52%, and 47.0 ± 0.69, respectively. %Met.

<Example B>
The radiation shielding ability of the radiation shielding finger cot using actual angiography was investigated. The arrangement of the experiments is shown in FIG. 7 (a). FIG. 7B is a partially enlarged view. An undertube type C-arm digital angular system (AXIOM-Artis dFC, Siemens Erlangen, Germany) was used, and two modes, a transmission mode and a shooting mode, were examined.

With reference to FIG. 7 (a), the X-ray source 54 is arranged 600 mm below the couch (patient bed) 52. A phantom 56 that looks like a patient is placed on the couch 52. Further, a plane detector 58 is arranged at a position 300 mm from the couch 52.

The individual size of the four water equivalent phantoms 56 placed on the couch 52 assuming a patient is 300 mm (length) × 300 mm (width) × 50 mm (height), and the thickness of the total is 200 mm.

The filter of the X-ray tube which is the radiation source 54 is 0.3 mmCu, and the distance between the radiation source 54 and the plane detector 58 is 900 mm. The couch 52 is an equal amount of 0.86 mm aluminum in the Monte Carlo simulation. The irradiation field size is 180 × 180 mm, and in the fluoroscopic mode, it is 15 frames / sec, and the pulse width per frame is 3.9 ms. Further, in the shooting mode, the pulse width per frame is 7.5 ms at 15 frames / sec.

The air kerma (mGy / m) was measured 5 times using a dosimeter 45, and the X-ray shielding rate (%) was determined from the average value with and without the finger cot 2. As for the measurement position, the measurement was performed at a position 200 mm from the isocenter (radiation irradiation center), which is assumed to be the position of the finger of the actual worker. The same measurement was performed for commercially available lead gloves for medical use. The X-ray shielding rate (%) of the exposure dose to fingers was determined using Eq. (1). Table 1 shows the conditions at the time of the experiment.

The measurement results are shown in FIG. With reference to FIG. 8, the horizontal axis shows the difference between the fluoroscopic mode and the photographing mode, and the vertical axis is the X-ray shielding rate (%). Black circles (●) are for finger cots 2, and black squares (■) are commercially available lead gloves for medical use.

The X-ray shielding rates of the finger cot 2 and the commercially available lead gloves at a position 200 mm away from the isocenter in the fluoroscopic mode were 91.3 ± 0.21% and 56.5 ± 0.58%, respectively. .. The X-ray shielding rates of the finger cot 2 and the commercially available lead gloves at a position 200 mm away from the isocenter in the imaging mode are 96.5 ± 0.04% and 67.6 ± 0.33%, respectively. there were.

<Example C>
Next, the surgeon actually put on the finger cot 2 and examined the X-ray shielding rate. An Innova 4100 IQ (GE Healthcare, Buckinghamshire, England) was used as an IVR inspection device.

The finger cot 2 according to the present invention is attached to the 4th finger of the left hand of the radiologist performing the IVR examination, and the dose measurement glass is attached to the unprotected third finger and the 4th finger protected by the finger cot 2. A 70 μm dose equivalent (hereinafter referred to as “H70 μm”) of the operator's skin was measured using a ring (Chiyoda Technol, Tokyo, Japan). Table 2 shows the values of each inspection and fluoroscopy time measured and the surface absorbed dose of the device. The measurement results are shown in Table 3.

Transcatheter arterial embolization (TAE) is a transcatheter infusion of an embolic substance into the hepatic artery that feeds polycytic hepatocellular carcinoma and embolizes the feeding artery, causing the tumor to become hemostatic and necrotic. It is a procedure.

Transcatheter arterial chemoembolization (TACE) is a method of injecting an embolic substance after injecting a mixed solution of an oil-based contrast agent and an anticancer agent.

A CV (Central Venus) port is a medical device that is completely implanted under the skin to inject various drugs. It is a procedure that is usually implanted in either the left or right precordium (chest) using fluoroscopy.

Abdominal angiography is a procedure in which a contrast medium is injected into a catheter inserted into the abdomen under fluoroscopy to depict blood vessels in the abdomen.

The value of H70 μm of the third finger not protected by the finger cot 2 was 3.3 mGy, and the value of H70 μm of the fourth finger protected by the finger cot 2 was 2.0 mGy. From this, the reduction rate of the finger exposure dose of the operator by the finger cot 2 was 39.4%.

From the above, the radiation shielding finger cot according to the present invention has a high X-ray shielding effect as compared with commercially available medical lead gloves at a tube voltage of 60 to 120 kV, which is used in a general imaging device. (Fig. 6). This is related to the fact that tungsten has a higher linear attenuation coefficient and higher attenuation than lead in the range of tube voltage of 60-120 kV used in the diagnostic region.

Therefore, the thickness (0.5 mm) used in the above embodiment can be further reduced. Reducing the thickness contributes to improving the flexibility of the radiation shielding finger cot and leaving the sensation of the operator's fingertips. As a result, it is considered that the workability of the operator is improved.

Even in the angiography device, the radiation shielding finger cot had a higher X-ray shielding effect than the commercially available lead medical gloves in both the fluoroscopic and imaging modes at a position 200 mm away from the isocenter. (Fig. 8). For the actual IVR test, protecting the operator's fingers with a radiation-shielding finger cot reduced the operator's finger dose by 39.4% compared to when it was not protected.

The radiation shielding finger cot according to the present invention can suitably suppress the exposure of a doctor's fingertip when performing a treatment such as IVR.

1, 2, 3 finger cots (radiation shielding finger cots)
10 Cap part 10a Opening 10b Depth 10c Side wall 12 Sensitizing part 20 Guard part 20w Width 20L Length 25 Gap 30 Guard part

Claims (3)

Consists of a single layer of elastomer in which tungsten powder is dispersed,
The cap part where the fingertips are inserted and
A radiation shielding finger cot that is continuously extended to the cap portion and has a guard portion having the same composition as the cap portion . The radiation shielding finger cot according to claim 1, wherein a sensitizing portion having a thin thickness or an opening is formed in a part of the cap portion. The radiation shielding finger cot according to any one of claims 1 or 2 , wherein the finger cot has a density of 6.0 Mg / m ³ to 12.0 Mg / m ³ .

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