Abdominal pressure belt device for radiotherapy

Abstract

The invention discloses an abdominal pressure belt device for radiotherapy, which comprises a positioning mechanism, a human body positioning bag and an abdominal pressure belt, and is characterized in that the positioning mechanism comprises an adaptive plate connected with a CT bed board and a base cooperatively connected with the adaptive plate, and the base is fixed on various CT bed boards through the adaptive plate; an adjustable positioning block and a slotted hole are arranged at two ends of the base, the human body positioning bag is arranged on the base, and a positioning groove corresponding to the positioning block is formed after the human body positioning bag is exhausted, so that quick resetting is realized; the abdominal pressure belt comprises a belt body and connecting components arranged at the two ends of the belt body, a pressing plate is arranged in the middle of the belt body, the abdominal pressure belt penetrates through the groove holes and forms a ring through the connecting components, an air bag is arranged between the pressing plate and the belt body, the inflation assembly pressurizes to a set value according to the indicating value of the barometer, marks can be drawn on the skin after the pressing plate is positioned, it is ensured that repeated treatment abdominal pressure and body position are consistent, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to medical auxiliary equipment, in particular to an abdominal pressure belt device used for fixation during radiotherapy. Background Art

[0002] Abdominal tumors (especially liver, pancreatic, stomach and intestinal tumors) require multiple radiotherapy sessions at the same location during fractionated radiotherapy. The patient's respiratory movement causes movement of the diaphragm, causing the abdominal tumor to change with the movement of the diaphragm. Therefore, in clinical practice, an abdominal pressure belt is routinely used to apply constant pressure to the abdomen to reduce diaphragmatic movement and inhibit intestinal peristalsis, thereby avoiding treatment errors caused by abdominal peristalsis during radiotherapy that affect the treatment effect. The existing abdominal pressure belt is a buckle-type belt, comprising an abdominal pressure belt body with a gas cavity. The belt body has buckles on both sides, and the buckles are buckled into the corresponding holder on the bed board. The outer surface of the belt body is printed with scale lines, and its gas cavity is connected to an external pressure gauge through the trachea. This structure only roughly records the belt length by relying on the buckle holes or scale lines, and cannot know the actual position of the patient lying on the treatment bed. Although a deflated body positioning bag can be placed on the treatment bed to conform to the body's shape, the position of the bag and the bed cannot be reset. During the patient's next treatment, the bag may still shift forward, backward, or left, right, relative to the bed, requiring readjustment, which is time-consuming and affects accuracy. Furthermore, the air chamber of the abdominal compression belt, when inflated for extended periods, can compress the ribs on both sides of the abdomen. This is not only uncomfortable but also prone to slippage during multiple respiratory cycles and intestinal peristalsis, resulting in poor stability and impacting the effectiveness of radiotherapy. Summary of the Invention

[0003] The present invention provides an abdominal compression belt device that combines precise reduction and long-lasting stability, ensuring that the patient remains in the same position during multiple radiotherapy sessions and continuously suppressing diaphragm and intestinal movements, thereby significantly improving the radiotherapy effect.

[0004] The abdominal pressure belt device for radiotherapy described in the present invention includes a positioning mechanism, a human body positioning bag filled with foamed particles that can be evacuated and shaped, and an abdominal pressure belt; the positioning mechanism includes: an adapter plate for connecting to a CT bed plate, and a base connected to the adapter plate, both ends of the base are equipped with positioning blocks that can move along the length direction of the base and be locked, and a locking member for locking the positioning blocks in a set position, and both ends of the base are also provided with slots for the abdominal pressure belt to pass through, and the human body positioning bag is placed on the positioning mechanism; the abdominal pressure belt includes a belt body and connecting components provided at both ends of the belt body for connecting end to end to form a ring, a pressure plate is provided on the inside of the belt body to abut against the human abdomen, and an air bag is provided between the belt body and the pressure plate, and also includes an inflation component connected to the air bag for inflation and a barometer provided on the inflation component.

[0005] The base of the abdominal compression belt device for radiotherapy is fixed to the CT bedplate by an adapter plate. The adapter plate serves as an intermediate adapter, allowing the base to be installed on CT bedplates of different manufacturers and different specifications, thereby expanding the scope of application of the positioning mechanism and eliminating the trouble of making separate molds for each bedplate. The sliding and lockable positioning blocks on the base can adjust the spacing according to the patient's body shape. When the human body positioning bag is evacuated and shaped, the positioning blocks will form a pair of symmetrical positioning grooves on the surface of the bag. During subsequent treatment, the body position can be instantly reset by simply aligning the two positioning grooves of the human body positioning bag with the positioning blocks, ensuring consistent positions for multiple radiotherapy sessions without the need for repeated measurements and adjustments, significantly improving clinical efficiency. The abdominal pressure belt passes through the slots at both ends of the base and is fixed to the patient through the connecting components. The airbag is inflated through the inflation component, so that the pressure plate fits tightly against the abdomen, concentrating the pressure on a fixed area, which not only prevents the overall slippage of the abdominal pressure belt, but also continuously and effectively restricts the movement of the diaphragm and intestinal tract; the barometer displays and records the current pressure value in real time. After the optimal pressure is determined for the first treatment, subsequent treatments only require the airbag to be inflated to the set value again. The contact point between the pressure plate and the skin can also be marked along the contour of the pressure plate as a visual positioning anchor point on the body surface, further ensuring that the abdominal pressure and body position remain consistent for each treatment.

[0006] As a preferred solution of the present invention, several pairs of pin holes are arranged at intervals along the length direction at both ends of the base, and the locking member is a pin that is screwed on the positioning block and inserted into the pin hole. The end of the pin used to insert into the pin hole is circumferentially provided with a multi-stage expansion ring.

[0007] As a preferred solution of the present invention, two adjustment slots are provided in parallel at both ends of the base along the length direction, and a screw is also provided that passes through the adjustment slot and is screwed to the positioning block. A gap is left between the screw and the base for the positioning block to slide freely along the adjustment slot. The locking piece is a locking screw that vertically passes through the middle of the positioning block and is tightened to press against the base and can be displaced when loosened.

[0008] As a preferred solution of the present invention, two adjustment slots are provided in parallel at both ends of the base along the length direction, and screws are also provided that pass through the adjustment slots and are screwed to the positioning block. A gap is left between the screws and the base for the positioning block to slide freely along the adjustment slots. The locking member is a knob switch that passes through the middle of the positioning block. A receiving groove for accommodating the knob switch is provided in the middle of the positioning block. The inner side wall of the receiving groove is provided with a slide groove with a gradual height change. A pin is provided on the side of the knob switch that is embedded in the slide groove. A rubber pad with elasticity that is used to stop the knob switch is also installed at the bottom of the knob switch.

[0009] As a preferred solution of the present invention, the base is provided with scales along the length direction.

[0010] As a preferred solution of the present invention, a first positioning post is provided on the back of the adapter plate, and a plurality of pairs of first positioning holes that cooperate with the first positioning post are provided on both sides of the CT bed plate at intervals. The first positioning post is inserted into the first positioning hole to fix the adapter plate to the CT bed plate; a second positioning post is provided on the front of the adapter plate, and a second positioning hole that cooperates with the second positioning post is provided on the base. The second positioning post is inserted into the second positioning hole to fix the base to the adapter plate.

[0011] As a preferred embodiment of the present invention, the inflation assembly includes an air pipe connected to the airbag, an air nozzle provided at the air inlet end of the air pipe, and an inflatable airbag detachably connected to the air nozzle and integrated with a pressure gauge.

[0012] As a preferred solution of the present invention, the pressing plate is a triangular plate in the shape of an equilateral triangle.

[0013] As a preferred solution of the present invention, a soft cushion is provided on the side of the pressing plate that contacts the abdomen.

[0014] As a preferred solution of the present invention, the belt body is provided with scales. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the positioning mechanism installed on the CT bed.

[0016] Figure 2 Exploded diagram of the positioning mechanism installed on the CT bed.

[0017] Figure 3 A lateral cross-sectional view of the positioning mechanism installed on the CT bed.

[0018] Figure 4 for Figure 3 Explosion diagram.

[0019] Figure 5 It is a schematic diagram of the positioning mechanism structure.

[0020] Figure 6 It is a top view of the positioning mechanism.

[0021] Figure 7 It is a side sectional view of the positioning mechanism.

[0022] Figure 8 This is a schematic diagram of the second positioning mechanism structure.

[0023] Figure 9 It is a side sectional view of the second positioning mechanism.

[0024] Figure 10 This is an exploded diagram of the second positioning mechanism.

[0025] Figure 11This is an explosion diagram of the third positioning mechanism.

[0026] Figure 12 This is a top view of the third positioning mechanism.

[0027] Figure 13 This is a partial cross-sectional view of the third positioning mechanism.

[0028] Figure 14 Schematic diagram of the knob switch structure.

[0029] Figure 15 Schematic diagram of the abdominal pressure belt structure.

[0030] Figure 16 This is a schematic diagram of the structure of the abdominal pressure belt in the other direction.

[0031] Figure 17 This is a side view of the abdominal pressure belt.

[0032] Figure 18 This is a cross-sectional view of the abdominal pressure belt.

[0033] Figure 19 This is a reference diagram of the usage status of an abdominal compression belt device for radiotherapy.

[0034] Figure 20 This is a reference diagram of the abdominal pressure belt passing through the positioning mechanism.

[0035] Figure 21 This is a reference diagram of the usage status of the human body positioning bag and positioning mechanism. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "disposed," "provided with," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0039] If there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "several" means more than one, "more" means more than two, and "above", "below", "within", etc. are all understood to include the number itself. In addition, the technical features of each embodiment can be arbitrarily combined. In order to make the description concise, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] like Figure 1-21As shown, an abdominal pressure belt device for radiotherapy includes a positioning mechanism 1, a human body positioning bag 2 filled with foam particles that can be evacuated and shaped, and an abdominal pressure belt 3; the positioning mechanism 1 includes an adapter plate 101 for connecting to a CT bed plate 4, and a base 102 connected to the adapter plate, both ends of the base are equipped with positioning blocks 103 that can move along the length direction of the base and be locked, and locking members 104 for locking the positioning blocks in a set position, and slots 105 for the abdominal pressure belt to pass through are also provided at both ends of the base, and the human body positioning bag is placed on the positioning mechanism; the abdominal pressure belt 3 includes a belt body 301 and connecting members 302 provided at both ends of the belt body for connecting end to end to form a ring, a pressure plate 303 is provided on the inner side of the belt body for abutting against the human abdomen, an air bag 304 is provided between the belt body and the pressure plate, and an inflation component 5 connected to the air bag for inflation and a barometer 6 provided on the inflation component. The base of the abdominal compression belt device is secured to the CT bedplate (computed tomography bedplate) via an adapter plate. The adapter plate serves as an intermediate adapter, allowing the base to be installed on CT bedplates of different manufacturers and specifications, thereby expanding the applicability of the positioning mechanism and eliminating the need for separate molds for each bedplate. The sliding and lockable positioning blocks on the base can be adjusted to suit the patient's body shape. Once the body positioning bag is evacuated and shaped, the positioning blocks form a pair of symmetrical positioning grooves 8 on the bag's surface. During subsequent treatments, simply aligning the two positioning grooves of the body positioning bag with the positioning blocks instantly repositions the patient, ensuring consistent positioning across multiple radiotherapy sessions without the need for repeated measurements and adjustments, significantly improving clinical efficiency. The abdominal pressure belt passes through the slots at both ends of the base and is fixed to the patient through the connecting components. The airbag is inflated through the inflation component, so that the pressure plate fits tightly against the abdomen, concentrating the pressure on a fixed area, which not only prevents the overall slippage of the abdominal pressure belt, but also continuously and effectively restricts the movement of the diaphragm and intestinal tract; the barometer displays and records the current pressure value in real time. After the optimal pressure is determined for the first treatment, subsequent treatments only require the airbag to be inflated to the set value again. The contact point between the pressure plate and the skin can also be marked along the contour of the pressure plate as a visual positioning anchor point on the body surface, further ensuring that the abdominal pressure and body position remain consistent for each treatment.

[0041] like Figure 5-7 As shown, the base 102 is provided with a plurality of pairs of pin holes 106 spaced apart along its length at both ends. The locking member 104 is a pin screwed onto the positioning block and inserted through the pin hole. The end of the pin for insertion into the pin hole is circumferentially provided with a multi-stage expansion ring 107. The pin is an open-ended pin, which provides elasticity at the end where it is inserted into the pin hole. The elastic self-locking effect of the multi-stage expansion ring allows the pin to automatically tighten once inserted into the pin hole, securing the positioning block to the base. When the pin is removed, the expansion ring gradually reduces resistance, making removal effortless and enabling quick and reliable position adjustment of the positioning block on the base.

[0042] like Figure 8-10As shown, two adjustment slots 108 are provided at both ends of the base 102 in parallel along the length direction. The base 102 also includes screws 109 that pass through the adjustment slots and are screwed to the positioning block. A gap is left between the screws and the base to allow the positioning block to slide freely along the adjustment slots. The locking member 104 is a locking screw that vertically passes through the middle of the positioning block and abuts against the base when tightened and can be displaced when loosened. The positioning block is slidably mounted on the base via a screw with a clearance fit, and is then tightened against the base by a locking screw that vertically passes through the positioning block. Tightening the screw locks the positioning block, and loosening the screw unlocks the block, allowing it to slide, thus achieving infinitely adjustable displacement of the positioning block on the base.

[0043] like Figure 11-14 As shown, the base has two parallel adjustment slots 108 at both ends along its length. It also includes screws 109 that pass through the adjustment slots and are screwed to the positioning block. A gap is left between the screws and the base, allowing the positioning block to slide freely along the adjustment slots. The locking member 104 is a knob switch that passes through the middle of the positioning block. The positioning block has a receiving groove 110 in the middle for accommodating the knob switch. The inner wall of the receiving groove is provided with a sliding groove 111 with a gradient height. The side of the knob switch is provided with a latch 112 that is embedded in the sliding groove. The bottom of the knob switch is also installed with a resilient rubber pad 113 that abuts against the base for stopping. When the knob switch is rotated, the latch slides from high to low, pushing the knob switch down. The resilient rubber pad at the bottom of the knob switch then presses against the base, instantly stopping the knob. When the knob switch is loosened in the opposite direction, the rubber pad rebounds, allowing the positioning block to slide freely, achieving infinitely adjustable displacement of the positioning block on the base. Furthermore, in order to quickly install the knob switch in the receiving groove, an introduction groove 114 connected to the slide groove is vertically opened on the side wall of the receiving groove. The installation of the knob switch can be completed by sliding the pin into the slide groove through the introduction groove; the knob switch can also be placed in the receiving groove by other means.

[0044] The base 102 is provided with a scale 115 along its length. The scale is provided along its length so that the positioning block can directly correspond to the scale reading during the sliding or locking process, achieving visual and precise displacement control, avoiding repeated measurements, and improving adjustment efficiency and repeated positioning accuracy.

[0045] The side of the positioning block is provided with a positioning mark 119 for aligning with the scale. The positioning mark moves with the positioning block and coincides with the scale line. The displacement can be read visually, achieving precise displacement control and improving reset accuracy.

[0046] like Figure 3 and Figure 4As shown, the adapter plate 101 has a first positioning post 116 on the back, and a plurality of pairs of first positioning holes 401 spaced apart on both sides of the CT bedplate 4 cooperate with the first positioning post. The first positioning post is inserted into the first positioning hole to secure the adapter plate to the CT bedplate. The adapter plate 101 has a second positioning post 117 on the front, and the base 102 has a second positioning hole 118 that cooperates with the second positioning post. The second positioning post is inserted into the second positioning hole to secure the base to the adapter plate. The adapter plate utilizes the plug-in fit between the first positioning post on the back and the first positioning hole on the CT bedplate to achieve universal fixation with CT bedplates of different manufacturers and specifications. The second positioning post on the front plugs into the second positioning hole on the base, allowing the base to quickly adapt to various CT bedplates without the need for separate molds, expanding its applicability and reducing manufacturing costs.

[0047] like Figure 15-18 As shown, the inflation assembly 5 includes an air tube 501 connected to the airbag 304, a nozzle 502 located at the air inlet end of the air tube, and an inflation airbag 503 detachably connected to the nozzle and integrated with a pressure gauge 6. The airbag quickly docks with the detachable inflation airbag via the nozzle, and the pressure gauge integrated into the airbag displays the pressure value in real time. After determining the optimal pressure for the first treatment, subsequent precise inflation can be completed by simply reproducing this value without repeated adjustments, significantly improving treatment consistency, shortening preparation time, and reducing operational errors.

[0048] An exhaust valve 504 is further provided between the inflated airbag 503 and the connecting section of the trachea 501. During use, if the pressure of the airbag is too high and the patient cannot bear it or the airbag needs to be exhausted, the exhaust valve can be loosened to immediately reduce the pressure and exhaust quickly.

[0049] like Figure 16 As shown, the pressing plate 302 is a triangle-shaped plate. The geometric characteristics of the pressing plate are symmetrical and have a clear center. This triangular shape forms a unique triangular outline mark on the body surface in one go. This mark serves as a visual anchor point, ensuring that the abdominal pressure area is perfectly aligned with the body position during each treatment, resulting in high repeatability and minimal operational error.

[0050] like Figure 18 As shown, the side of the compression plate 302 that contacts the abdomen is provided with a cushion 7. The cushion forms an elastic buffer between the compression plate and the abdomen, which can evenly distribute the pressure and eliminate local pressure, thereby preventing skin injuries and improving patient comfort. At the same time, it maintains stable abdominal pressure transmission and ensures treatment accuracy.

[0051] like Figure 15 As shown, the belt body 301 is provided with a scale. The scale on the belt body can directly read the tightness or circumference of the abdominal pressure belt around the patient's abdomen. After the initial adjustment, the value is recorded and no re-measurement is required during subsequent treatments, achieving fast and accurate re-positioning and improving operational efficiency.

[0052] As a further solution, the connecting member 302 can be a Velcro or a buckle, so as to facilitate the abdominal compression belt to be quickly tied to the patient's abdomen.

[0053] The above descriptions are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention. In the description of the present invention, the reference terms "one embodiment", "some embodiments", "embodiment", "illustrative embodiment", "example", "specific example" or "some examples" are intended to mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. It is explicitly and implicitly understood by those skilled in the art that, in the absence of conflict, the embodiments described herein can be combined with other embodiments, and the embodiments of the present invention and the features in the embodiments can be combined with each other.

Claims

1. An abdominal compression belt device for radiotherapy, characterized in that: The invention comprises a positioning mechanism (1), a human body positioning bag (2) filled with foaming particles that can be evacuated and shaped, and an abdominal pressure belt (3); the positioning mechanism (1) comprises an adapter plate (101) for connecting to a CT bed plate (4), and a base (102) connected to the adapter plate, both ends of the base are provided with positioning blocks (103) that can move along the length direction of the base and be locked, and a locking member (104) for locking the positioning blocks at a set position, and both ends of the base are provided with slots (105) for the abdominal pressure belt to pass through, and the human body positioning bag is placed on the positioning mechanism; the abdominal pressure belt (3) comprises a belt body (301) and connecting members (302) provided at both ends of the belt body for connecting end to end to form a ring, a pressure plate (303) is provided on the inner side of the belt body for contacting the human abdomen, an air bag (304) is provided between the belt body and the pressure plate, and an inflation component (5) connected to the air bag for inflation and a barometer (6) provided on the inflation component.

2. The abdominal compression belt device for radiotherapy according to claim 1, characterized in that: A plurality of pairs of pin holes (106) are arranged at intervals along the length direction at both ends of the base (102); the locking member (104) is a pin screwed onto the positioning block and inserted into the pin hole; and a multi-stage expansion ring (107) is provided around the end of the pin for inserting into the pin hole.

3. The abdominal compression belt device for radiotherapy according to claim 1, characterized in that: Two adjustment slots (108) are provided at both ends of the base (102) in parallel along the length direction, and the base also includes screws (109) that pass through the adjustment slots and are screwed to the positioning block. A gap is left between the screws and the base for the positioning block to slide freely along the adjustment slots. The locking member (104) is a locking screw that vertically passes through the middle of the positioning block and is tightened to abut against the base and can be displaced when loosened.

4. The abdominal compression belt device for radiotherapy according to claim 1, wherein: Two adjustment slots (108) are provided in parallel at both ends of the base along the length direction, and the base also includes screws (109) that pass through the adjustment slots and are screwed to the positioning block. A gap is left between the screws and the base for the positioning block to slide freely along the adjustment slots. The locking member (104) is a knob switch that passes through the middle of the positioning block. The middle of the positioning block is provided with a receiving groove (110) for accommodating the knob switch. The inner side wall of the receiving groove is provided with a sliding groove (111) with a gradual height change. The side of the knob switch is provided with a pin (112) that is embedded in the sliding groove. The bottom of the knob switch is also equipped with an elastic rubber pad (113) that is used to stop the base.

5. The abdominal compression belt device for radiotherapy according to claim 3 or 4, characterized in that: The base (102) is provided with scales (115) along the length direction.

6. The abdominal compression belt device for radiotherapy according to claim 1, characterized in that: The adapter plate (101) is provided with a first positioning column (116) on the back side, and a plurality of pairs of first positioning holes (401) are provided at intervals on both sides of the CT bed plate (4) to match the first positioning columns. The first positioning columns are inserted into the first positioning holes to fix the adapter plate to the CT bed plate. The adapter plate (101) is provided with a second positioning column (117) on the front side, and the base (102) is provided with a second positioning hole (118) to match the second positioning column. The second positioning column is inserted into the second positioning hole to fix the base to the adapter plate.

7. The abdominal compression belt device for radiotherapy according to claim 1, characterized in that: The inflation assembly (5) comprises an air tube (501) connected to the air bag (304), an air nozzle (502) provided at the air inlet end of the air tube, and an inflation air bag (503) detachably connected to the air nozzle and integrated with an air pressure gauge (6).

8. The abdominal compression belt device for radiotherapy according to claim 1, characterized in that: The pressing plate (302) is a triangular plate in the shape of an equilateral triangle.

9. The abdominal compression belt device for radiotherapy according to claim 1, characterized in that: A soft cushion (7) is provided on the side of the pressing plate (302) that contacts the abdomen.

10. The abdominal compression belt device for radiotherapy according to claim 1, wherein: The belt body (301) is provided with scales.

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