CN106618627B

CN106618627B - Radiation protection bed with adjustable CT scanning

Info

Publication number: CN106618627B
Application number: CN201611179734.6A
Authority: CN
Inventors: 殷亚亚; 印弘; 郑敏文; 黄怡
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2016-12-19
Filing date: 2016-12-19
Publication date: 2023-03-10
Anticipated expiration: 2036-12-19
Also published as: CN106618627A

Abstract

The invention discloses an adjustable radiation-proof bed for CT scanning, which comprises a bed body, wherein the bed body comprises a pair of support shafts arranged at intervals, a plurality of arched blocking covers are arranged above the support shafts, two ends of each blocking cover are respectively provided with a sliding sleeve, the sliding sleeves are sleeved on the pair of support shafts, and the sliding sleeves can slide along the axial direction of the support shafts; and supporting plates are arranged between the sliding sleeves at the two ends of each blocking cover and are positioned below the support shafts. The invention can aim at effectively covering and protecting the part which does not need to be scanned on the body of the examinee by adjusting and combining the positions of different blocking covers, is tighter than the prior protective measures, and can thoroughly and effectively protect each part on the body of the examinee.

Description

Radiation protection bed with adjustable CT scanning

Technical Field

The invention relates to medical examination equipment, in particular to an adjustable radiation-proof bed for preventing radiation from damaging non-scanning parts during CT scanning.

Background

CT scanning is an important clinical examination means, and utilizes radioactive rays and a detector to carry out section scanning around a certain part of a human body one by one, and obtains radioactive ray absorption numerical values of all points on a scanning layer through calculation processing of a computer, and the data form a matrix of an image, so that the CT scanning is used for assisting a doctor to diagnose diseases, and has the advantages of simple and convenient operation, high accuracy, clearer scanned image and the like.

While providing assistance in disease diagnosis, CT scanning causes some damage to the human body, and as CT technology continues to be widely used, such damage is increasingly well recognized. The international radiation protection committee has proved that the risk of carcinogenesis of the examinee due to radiation is obviously improved when a CT scan is carried out for the whole body examination. In addition, during the scanning process, the radioactive rays are repeatedly emitted and refracted in the scanning space to generate a large amount of rays, the body of the detected person is inevitably repeatedly irradiated by the rays, and after being absorbed by human tissues, the human tissues are damaged, particularly the gonads, the thyroid glands, the lungs, the mammary glands and the like of the person; it has been confirmed that various tumors are induced by exposure of human tissues to radiation.

At present, a CT scanning bed used clinically does not have extra radiation protection measures, only utilizes a lead garment to cover the reproductive system of a detected person in the examination process, but cannot effectively protect other tissues from radiation.

Some radiation protection examining tables have been proposed in the prior art at present, and these examining tables are in the in-service use, and ubiquitous problem has: firstly, the basic protection ideas of the examination beds are consistent, the non-examination parts are protected in an integral coating or covering mode, but most of the examination beds can only form a regular scanning area like a strip or a rectangle, and the examination beds are not fine enough in radiation protection; secondly, the existing radiation-proof examining table only considers the protection of the patient, but during the examination, the ray beam and the receiver in the scanning device rotate around the body of the examinee, so the bed body part has certain influence on the scanning result; thirdly, when the enhanced CT is carried out, the examinee needs to carry out venipuncture and inject a contrast medium, the scanning is needed in a short time after the injection, but the leakage of the liquid of part of the examinee is likely to occur, and the existing radiation-proof examining table adopts a full-covering mode, so that the nursing staff cannot observe the situation in time, and the scanning result is likely to be influenced; fourth, the existing protective measures can only protect the whole body, but if a plurality of different parts of the body need to be scanned in one scanning process, the whole body needs to be readjusted, which is very inconvenient.

Disclosure of Invention

In view of the above problems in the prior art, an object of the present invention is to provide an adjustable radiation-proof bed for CT scanning, which can provide protection measures more finely, and also provide convenience for multi-position scanning, so as to reduce the influence on the scanning result as much as possible while achieving a better protection effect.

In order to realize the task, the invention adopts the following technical scheme:

an adjustable radiation protection bed for CT scanning comprises a bed body, wherein the bed body comprises a pair of support shafts arranged at intervals, a plurality of arched blocking covers are arranged above the support shafts, sliding sleeves are mounted at two ends of each blocking cover and sleeved on the support shafts, and the sliding sleeves can slide along the axial directions of the support shafts; and a support plate is arranged between the sliding sleeves at the two ends of each blocking cover and is positioned below the support shaft.

Furthermore, the front ends of the pair of fulcrum shafts are connected through an end plate, a headrest is arranged on the end plate, and first fixing holes are distributed on the edge of the headrest; the headrest on detachably be provided with the head protective sheath, be provided with on the head protective sheath with first fixed orifices complex dead lever.

Furthermore, the head protective sleeve comprises a spherical protective cover, an accommodating cavity is arranged in the protective cover, rotating shafts are symmetrically arranged outside the protective cover, spherical and transparent movable covers are mounted on the pair of rotating shafts, and the movable covers can rotate to form a hemispherical structure with the protective cover; the edge of the movable cover is provided with a groove.

Furthermore, a fixed cylinder is arranged on the sliding sleeve, a positioning groove is formed in the direction from the upper end face of the fixed cylinder to the inside of the fixed cylinder, and the end part of the blocking cover is movably assembled in the positioning groove; a position-fixing hole penetrating through the position-adjusting groove is radially formed in the side wall of the fixed cylinder, a T-shaped fixed button is assembled on the fixed cylinder, a spring is sleeved on the fixed button, and the fixed button penetrates through the position-fixing hole in a natural state; the end part of the blocking cover is provided with a plurality of positioning holes.

Furthermore, the support shaft is hollow, and a sliding groove is formed in the support shaft along the axial direction; a sliding block is arranged inside the sliding sleeve and assembled in the sliding groove; the fulcrum is provided with a locking fulcrum.

Furthermore, the front end and the rear end of the inside of the fulcrum shaft are respectively provided with a front support plate and a rear support plate, and the front support plate and the rear support plate are both provided with bearings for mounting the locking rotary shaft; the rear end of the locking rotary shaft extends out of the end part of the fulcrum shaft, and a locking handle is arranged at the end part of the locking rotary shaft;

a plurality of locking hooks are arranged on the locking rotary shaft at intervals, and the locking hooks are of an arc-shaped structure; and a locking hole matched with the locking hook is formed in the sliding block along the radial direction of the fulcrum shaft.

Furthermore, the cross section of the sliding sleeve is of a C-shaped structure, a support beam is vertically arranged on the support shaft, and the support beam is connected to a propelling shaft arranged in parallel with the support shaft.

Furthermore, the radiation-proof bed also comprises an arm protective sleeve, the arm protective sleeve is of a cylindrical structure, one end of the arm protective sleeve is closed, the other end of the arm protective sleeve is open, and a perspective window is movably assembled on the side surface of the arm protective sleeve; the arm protective sleeve is provided with an L-shaped mounting rod, and the propulsion shaft is provided with a second fixing hole matched with the mounting rod.

Furthermore, jacks are distributed on the front side surface of the blocking cover, and inserting columns corresponding to the jacks are distributed on the rear side surface of the blocking cover.

Furthermore, third fixing holes are distributed on the side surface of the blocking cover, and hanging curtains are detachably arranged on the third fixing holes and are in crescent structures; fixing columns matched with the third fixing holes are distributed on the edge of the curtain.

The invention has the following technical characteristics:

1. the invention can purposefully carry out effective covering and protection on the part of the body of the examinee which does not need to be scanned by adjusting and combining the positions of different blocking covers, is tighter compared with the prior protection measures, and can thoroughly carry out effective protection on each part of the body of the examinee;

2. the mechanism for locking the blocking cover is designed, so that the operation is very convenient, the position of the adjusted blocking cover can be fixed, the position is not changed in the scanning process, the adjustability of the whole device is better, and the operation is more convenient;

3. the baffle cover and the supporting plate adopt an integrated design structure, so that the baffle cover and the supporting plate can effectively protect the circumference of the body of a detected person, and meanwhile, the structure has the other advantage that the part needing to be scanned can be better exposed, so that the influence of the bed body on the scanning result is reduced as much as possible;

4. the detachable head protective sleeve and the arm protective sleeve structure are arranged, the head protective sleeve is worn when the head does not need to be scanned, and whether the liquid leakage phenomenon exists or not can be observed through the transparent arm protective sleeve when the CT enhanced scanning is performed, so that the examination bed can better meet different examination requirements.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of the shield and the backing plate portion;

FIG. 3 is a schematic view of the operation of the fixing button;

FIG. 4 is a schematic view of the locking spindle;

FIG. 5 is a schematic top view of the head protective cover;

FIG. 6 is a front view of the head protective cover;

FIG. 7 is a schematic view of the protective sheath for arm;

FIG. 8 is a schematic view of the construction of the curtain;

FIG. 9 is a schematic side view of the sliding sleeve;

the reference numbers in the figures represent: 1-fulcrum shaft, 2-sliding sleeve, 3-baffle cover, 4-supporting plate, 5-sloping plate, 6-fixed cylinder, 7-locking rotary shaft, 8-locking handle, 9-sliding groove, 10-pushing shaft, 11-supporting beam, 12-end plate, 13-headrest, 14-first fixing hole, 15-second fixing hole, 16-locking hook, 17-sliding block, 18-locking hole, 19-fixing button, 20-third fixing hole, 21-insertion hole/insertion column, 22-front supporting plate, 23-rear supporting plate, 24-positioning hole, 25-spring, 26-positioning hole, 27-positioning groove, 28-curtain, 29-fixing column, 30-arm protecting sleeve, 31-perspective window, 32-mounting rod, 33-protecting cover, 34-movable cover, 35-groove, 36-rotating shaft, 37-fixing rod.

Detailed Description

According to the technical scheme, as shown in fig. 1 to 9, the invention provides an adjustable radiation-proof bed for CT scanning, which comprises a bed body, wherein the bed body comprises a pair of support shafts 1 arranged at intervals, a plurality of arched blocking covers 3 are arranged above the support shafts 1, two ends of each blocking cover 3 are respectively provided with a sliding sleeve 2, the sliding sleeves 2 are sleeved on the pair of support shafts 1, and the sliding sleeves 2 can slide along the axial direction of the support shafts 1; and a support plate 4 is arranged between the sliding sleeves 2 at the two ends of each blocking cover 3, and the support plate 4 is positioned below the fulcrum shaft 1.

The radiation-proof bed has the basic idea that the radiation-proof units are arranged one by one, and the radiation-proof units are spliced according to actual requirements, so that the part needing to be scanned is exposed. The basic structure of the bed body comprises a pair of support shafts 1 which play a role of fixing and supporting, a baffle cover 3 is arranged above each support shaft 1, a support plate 4 is arranged below each support shaft 1, and the baffle cover 3 and the support plate 4 are of strip-shaped structures and are made of lead or other radiation-proof materials. The shield 3 and the support plate 4 together constitute a radiation protection unit for protecting the body of the subject in the circumferential direction. The shield 3 and the support plate 4 are of an integral structure and are connected by a sliding sleeve 2.

As shown in fig. 1, only one shield 3 is shown in the figure for clarity of illustration. Between the shield 3 and the support plate 4 is a space in which the subject can lie. In order to increase this space as much as possible to accommodate patients of different sizes, the support plate 4 is designed concave, i.e. the support plate 4 is located below the fulcrum 1, in addition to the arched configuration of the shield 3. Specifically, both ends of each support plate 4 are fixed with inclined plates 5 which are inclined with the support plates 4, and then the inclined plates 5 are fixed on the sliding sleeves 2.

Before the radiation-proof bed is used, different blocking covers 3 on the bed body are firstly slid according to the examination requirements, so that the parts of the examined person needing examination are leaked out, the blocking covers 3 are concentrated on the parts of the examined person needing no examination, and the adjacent blocking covers 3 are spliced. For example, in the example shown in fig. 1, a portion with a large gap between the support plates 4 is a corresponding portion when the subject is examined. By adopting the radiation protection unit structure, each part to be checked on the body can be freely exposed according to actual needs, so that refined protection is realized. For an examiner, when lying on the bed, the lower part of the body is supported by the support plate 4, and the upper part is shielded by the shield 3, so that the body can be effectively protected in the circumferential direction. For the inspection equipment, because the supporting plate 4 and the blocking cover 3 are of an integral structure, the gap of the blocking cover 3 is consistent with the gap of the supporting plate 4, namely, the inspection part can be exposed in the circumferential direction, so that rays are influenced by the bed body as little as possible in the inspection process, and the detection precision is improved.

In addition, by adopting the structure of the invention, the other remarkable characteristic is that a plurality of parts to be checked can be vacated at one time by splicing the blocking cover 3 in different modes, for example, the chest and the abdomen are required to be scanned, and the blocking cover 3 is concentrated on the parts of the body except the chest and the abdomen, so that the chest and the abdomen can be exposed after a subject lies on the bed, and different parts of the body can be checked in one scanning process, thereby improving the checking efficiency; meanwhile, other parts are effectively protected. The insertion holes 21 are distributed on the front side surface of the retaining covers 3, and the insertion columns corresponding to the insertion holes 21 are distributed on the rear side surface of the retaining covers 3, so that when the adjacent retaining covers 3 are spliced, the insertion column of one retaining cover 3 can be inserted into the insertion hole 21 of the other retaining cover 3, and thus, the splicing of the two adjacent retaining covers 3 is tighter. In addition, a blocking edge can be added on the edge of the blocking cover 3 to block the splicing gap between the adjacent blocking covers 3.

As shown in fig. 1, in this embodiment, the front ends of the pair of support shafts 1 are connected to each other by an end plate 12, and the end plate 12 functions to fix the two support shafts 1 to some extent; a headrest 13 is arranged on the end plate 12, and first fixing holes 14 are distributed at the edge of the headrest 13; the headrest 13 is detachably provided with a head protection sleeve, and the head protection sleeve is provided with a fixing rod 37 matched with the first fixing hole 14. As shown in fig. 5 and 6, the present invention provides a specific head protection sleeve structure, the head protection sleeve includes a spherical protection sleeve 33, a receiving cavity for receiving the head of the examinee is provided inside the protection sleeve 33, a rotating shaft 36 is symmetrically provided outside the protection sleeve 33, a spherical and transparent movable cover 34 is mounted on the pair of rotating shafts 36, the movable cover 34 can rotate to form a hemispherical structure with the protection sleeve 33; a groove 35 is formed on the edge of the movable hood 34. After the head protection sleeve is installed, the movable hood 34 is rotated to the upper part of the hood 33, namely, the state shown in fig. 6, and the head of the examinee can enter the accommodating cavity; after the head has been moved in and the body position has been adjusted, the moving cover 34 is lowered, as shown in fig. 5, with the neck of the patient passing through the recess 35 in the moving cover 34. In the head protective sleeve, the protective cover 33 is made of lead or other radiation-proof materials, the movable cover 34 is made of lead glass, and a doctor can observe the facial expression of the examinee through the movable cover 34 so as to avoid that the examinee is uncomfortable in examination and the doctor cannot know the facial expression in time.

When the head does not need to be scanned, the head protective sleeve can be worn, that is, the fixing rod 37 on the head protective sleeve is inserted into the first fixing hole 14, so that the head of the patient is positioned in the head protective sleeve to play a role in protection. When the head needs to be scanned, the head protective sleeve is taken down, so that the head scanning device is very convenient.

In the scheme, the structure of the sliding sleeve 2 is shown in fig. 2 and 9. The sliding sleeve 2 is a hollow cylindrical structure, a fixed cylinder 6 is arranged on the sliding sleeve 2, a positioning groove 27 is formed in the direction from the upper end face of the fixed cylinder 6 to the inside of the fixed cylinder 6, and the end part of the blocking cover 3 is movably assembled in the positioning groove 27; a position-fixing hole 26 penetrating through the position-adjusting groove 27 is radially formed in the side wall of the fixed cylinder 6, a T-shaped fixed button 19 is assembled on the fixed cylinder 6, a spring 25 is sleeved on the fixed button 19, and the fixed button 19 penetrates through the position-fixing hole 26 in a natural state; the end of the shield 3 is provided with a plurality of positioning holes 24.

The fixed cylinder 6 is provided for mounting the shield 3. Although the shield 3 is of an arch structure, the device has better universality for patients with different body sizes, such as patients with different body sizes, who can adjust the height position of the shield 3. For this purpose, a locking mechanism is provided on the fixed cylinder 6, in particular, by a plurality of positioning holes 24 at both ends of the shield 3, and the ends of the shield 3 are located in the positioning grooves 27. When the position needs to be adjusted, the fixing button 19 is pulled out to the outside, so that the fixing button 19 does not pass through the positioning hole 24, and the spring 25 is in a stretching state; after the height of the shield 3 is adjusted, the fixing button 19 is only required to be loosened, and under the reset action of the spring 25, the fixing button 19 will penetrate through a certain positioning hole 24 at the end of the shield 3, so as to relatively fix the end of the shield 3 and the fixed cylinder 6. By this mechanism, the height positions of the different flaps 3 can be adjusted easily.

As shown in FIG. 2, in the scheme, the fulcrum shaft 1 is hollow, and the fulcrum shaft 1 is provided with a sliding groove 9 along the axial direction; a sliding block 17 is arranged inside the sliding sleeve 2, the sliding block 17 is assembled in the sliding groove 9, and the width of the sliding block 17 is similar to that of the sliding groove 9; the slide 17 has two functions: one is used for fixing the sliding sleeve 2 and preventing the sliding sleeve 2 from rotating, thereby ensuring the stability of the blocking cover 3; the second is used for matching with the locking shaft to fix the position of the sliding sleeve 2.

The supporting shaft 1 is provided with a locking rotating shaft 7, the front end and the rear end of the inside of the supporting shaft 1 are respectively provided with a front support plate 22 and a rear support plate 23, and the front support plate 22 and the rear support plate 23 are respectively provided with a bearing for mounting the locking rotating shaft 7; namely, the locking screw 7 passes through the rear stay 23 and the end is fitted in a bearing on the front stay 22, ensuring that the locking screw 7 can rotate freely. The back end of the locking rotary shaft 7 extends out of the end part of the fulcrum shaft 1, and a locking handle 8 is arranged at the end part of the locking rotary shaft 7; a plurality of locking hooks 16 are arranged on the locking rotary shaft 7 at intervals, and the locking hooks 16 are of arc structures; the slider 17 is provided with a locking hole 18 which is engaged with the locking hook 16 along the radial direction of the fulcrum shaft 1.

As shown in fig. 2, 4 and 9, the slide block 17 has a lock hole 18 opened therein, and the axial direction thereof is along the radial direction of the support shaft 1. Since the axial direction of the lock screw 7 coincides with the axial direction of the support shaft 1, the lock screw 7 can rotate in the radial direction of the support shaft 1. During rotation, the locking hook 16 will be rotated. The sliding slot 9 and the sliding block 17 are located above the locking rotary shaft 7, and as the locking rotary shaft 7 rotates clockwise as shown in the example of fig. 2, the locking hook 16 will be snapped into the locking hole 18, and since the position of the locking rotary shaft 7 is fixed, the position of the sliding sleeve 2 will also be fixed, so that the position of the radiation protection unit formed by the shield 3 and the support plate 4 on the fulcrum shaft 1 is fixed. Thus, before inspection, after the position of each shield 3 is adjusted, the adjusted position is kept unchanged by locking the locking rotary shaft 7. The limitation to the sliding sleeve 2 is conveniently removed, only the locking handle 8 needs to be rotated reversely to separate the locking hook 16 from the locking hole 18, and the sliding sleeve 2 can slide on the support shaft 1 to adjust the position.

As shown in fig. 2, the cross section of the sliding sleeve 2 is C-shaped, a support beam 11 is vertically arranged on the fulcrum 1, and the support beam 11 is connected to a propulsion shaft 10 arranged parallel to the fulcrum 1. The C-shaped structure is that the circumference of the sliding sleeve 2 is provided with a gap, and the gap is arranged for not influencing the supporting beam 11, so that the sliding sleeve 2 can slide and cannot be influenced by the supporting beam 11. The propulsion shaft 10 in the scheme is matched with a propulsion system, namely, when a CT (computed tomography) examination is carried out, an examinee lies on a bed body and pushes the bed body into equipment through the propulsion system for examination, and the propulsion shaft 10 in the scheme can be conveniently matched with the propulsion system and plays a supporting role on the bed body.

As shown in fig. 7, for the examinee who needs to perform enhanced CT, in the present scheme, the radiation-proof bed further includes an arm protection cover 30 made of lead or other radiation-proof materials, the arm protection cover 30 is a cylindrical structure, one end of the arm protection cover 30 is closed and the other end is open, and a perspective window 31 made of lead glass is movably assembled on the side surface of the arm protection cover 30; the arm protecting sleeve 30 is provided with an L-shaped mounting rod 32, and the propelling shaft 10 is provided with a second fixing hole 15 matched with the mounting rod 32. When the examinee is used for CT enhancement, the arm protection sleeve 30 is fixed on one side of the bed body in an insertion mode, the arm of the examinee goes deep into the arm protection sleeve 30, the perspective window 31 is pushed open, intravenous injection is rapidly carried out, and then the perspective window 31 is closed to carry out CT examination. In the inspection process, the condition of the puncture part can be observed through the perspective window 31, so that the conditions such as liquid leakage and the like can be treated in time.

As shown in fig. 2, in the present solution, third fixing holes 20 are distributed on the side surface of the shield 3, a hanging curtain 28 is detachably arranged on the third fixing holes 20, and the hanging curtain 28 is in a crescent structure; fixing posts 29 matched with the third fixing holes 20 are distributed on the edge of the curtain 28. The curtain 28 is built-in with radiation-proof material as with the existing lead skirt structure, and is intended to block both ends of the shield 3 to prevent the refracted rays from entering the radiation-proof unit from both ends of the shield 3. Specifically, when in use, after the blocking covers 3 are spliced, the hanging curtain 28 is hung and inserted on the front end surface and the rear end surface of the blocking cover 3 group formed by splicing a plurality of blocking covers 3 through the fixing columns 29, and the crescent structure can enable the lower part of the hanging curtain 28 to be attached to the body as much as possible and prevent rays from entering.

Claims

1. The adjustable radiation protection bed for CT scanning comprises a bed body and is characterized in that the bed body comprises a pair of support shafts (1) which are arranged at intervals, a plurality of arched blocking covers (3) are arranged above the support shafts (1), sliding sleeves (2) are mounted at two ends of each blocking cover (3), the sliding sleeves (2) are sleeved on the support shafts (1), and the sliding sleeves (2) can slide along the axial direction of the support shafts (1); a support plate (4) is arranged between the sliding sleeves (2) at the two ends of each blocking cover (3), and the support plate (4) is positioned below the fulcrum shaft (1);

the cross section of the sliding sleeve (2) is of a C-shaped structure;

the support shaft (1) is hollow, and a sliding groove (9) is formed in the support shaft (1) along the axial direction; a sliding block (17) is arranged inside the sliding sleeve (2), and the sliding block (17) is assembled in the sliding groove (9); a locking rotary shaft (7) is assembled in the fulcrum shaft (1);

the front end and the rear end in the fulcrum shaft (1) are respectively provided with a front support plate (22) and a rear support plate (23), and the front support plate (22) and the rear support plate (23) are respectively provided with a bearing for mounting the locking rotary shaft (7); the rear end of the locking rotary shaft (7) extends out of the end part of the support shaft (1), and a locking handle (8) is arranged at the end part of the locking rotary shaft (7);

a plurality of locking hooks (16) are arranged on the locking rotary shaft (7) at intervals, and the locking hooks (16) are of arc structures; and a locking hole (18) matched with the locking hook (16) is formed in the sliding block (17) along the radial direction of the fulcrum shaft (1).

2. The adjustable radiation protection bed for CT scanning according to claim 1, wherein the front ends of a pair of fulcrum shafts (1) arranged at intervals are connected through an end plate (12), a headrest (13) is arranged on the end plate (12), and first fixing holes (14) are distributed on the edge of the headrest (13); the headrest (13) is detachably provided with a head protective sleeve, and the head protective sleeve is provided with a fixing rod (37) matched with the first fixing hole (14).

3. The adjustable radiation protection bed for CT scanning as claimed in claim 2, wherein the head protection cover comprises a spherical cover (33), the inside of the cover (33) is provided with a containing cavity, the outside of the cover (33) is symmetrically provided with a rotating shaft (36), the pair of rotating shafts (36) are provided with a spherical transparent movable cover (34), the movable cover (34) can rotate to form a hemispherical structure with the cover (33); the edge of the movable cover (34) is provided with a groove (35).

4. The adjustable radiation protection bed for CT scanning according to claim 1, wherein the sliding sleeve (2) is provided with a fixed cylinder (6), a positioning groove (27) is arranged from the upper end surface of the fixed cylinder (6) to the direction of the inside of the fixed cylinder (6), and the end of the blocking cover (3) is movably assembled in the positioning groove (27); a position-fixing hole (26) penetrating through the position-adjusting groove (27) is formed in the side wall of the fixed cylinder (6) along the radial direction, a T-shaped fixed button (19) is assembled on the fixed cylinder (6), a spring (25) is sleeved on the fixed button (19), and in a natural state, the fixed button (19) penetrates through the position-fixing hole (26); the end part of the blocking cover (3) is provided with a plurality of positioning holes (24).

5. The adjustable radiation protection bed for CT scanning according to claim 1, wherein a support beam (11) is vertically arranged on the support shaft (1), and the support beam (11) is connected to a propulsion shaft (10) which is arranged in parallel with the support shaft (1).

6. The adjustable radiation protection bed for CT scanning as recited in claim 1, wherein said radiation protection bed further comprises an arm protection cover (30), said arm protection cover (30) is a cylindrical structure, one end of said arm protection cover (30) is closed and the other end is open, a transparent window (31) is movably assembled on the side of said arm protection cover (30); an L-shaped mounting rod (32) is arranged on the arm protective sleeve (30), and a second fixing hole (15) matched with the mounting rod (32) is formed in the bed body.

7. The adjustable radiation protection bed for CT scanning according to claim 1, wherein the front side of the shield (3) is distributed with insertion holes (21), and the back side of the shield (3) is distributed with insertion posts corresponding to the insertion holes (21).

8. The adjustable radiation protection bed for CT scanning according to claim 1, wherein the side of the shield (3) is distributed with a third fixing hole (20), the third fixing hole (20) is detachably provided with a curtain (28), and the curtain (28) is in a crescent structure; fixed columns (29) matched with the third fixed holes (20) are distributed on the edge of the curtain (28).