WO2020062542A1

WO2020062542A1 - Unlocking apparatus for use in radiotherapy body support plate, and body support plate having unlocking function

Info

Publication number: WO2020062542A1
Application number: PCT/CN2018/118539
Authority: WO
Inventors: 郎锦义; 李林涛; 兰美; 王首龙; 路顺
Original assignee: 四川省肿瘤医院
Priority date: 2018-09-28
Filing date: 2018-11-30
Publication date: 2020-04-02
Also published as: CN109125957A; CN109125957B

Abstract

The present invention relates to an unlocking apparatus for use in a radiotherapy body support plate, and a body support plate having an unlocking function. The unlocking apparatus is used to spring free a bolt locked in a positioning hole of the body support plate upon triggering by a patient, thus enabling the unlocking function. The unlocking apparatus and the body support plate provided in the present invention feature a compact structure, convenient usage, the unlocking function and an automatic resetting function, and allow a patient fixed to the body support plate to unlock themselves in an emergency, thus effectively addressing flaws in the prior art.

Description

Unlocking device for radiotherapy body frame plate and body frame plate with unlocking function

Technical field

The invention relates to the technical field of medical equipment, in particular to an unlocking device for a radiotherapy body frame plate and a body frame plate having an unlocking function.

Background technique

Radiation therapy, referred to as radiotherapy, is one of the main methods for treating malignant tumors. About two thirds of patients with malignant tumors need to receive radiation therapy; domestic radiation therapy has entered the stage of precise treatment as a whole. Accurate radiotherapy is based on radiotherapy positioning. The images generated by the CT scan are used to complete the radiotherapy positioning CT. The patient's body image is collected in a unified coordinate system. The doctor outlines the tumor target area based on this image, and then the physicist designs the radiotherapy plan. After the radiotherapy plan is verified and approved, Radiotherapy can be performed; in radiotherapy, maintaining the patient's position fixed is the key to accurate treatment.

At present, in a hospital, a set of fixing devices is generally used to fix a patient, and the fixing devices include a thermoplastic film (also referred to as a positioning film) and a body frame plate (or a positioning plate), wherein the body frame plate It is a flat plate. A plurality of positioning holes are respectively provided on the two sides of the body frame plate. Edges are provided on the edges of the two sides of the thermoplastic film. The positions of the side bars corresponding to the positioning holes are provided respectively. Fixing holes, with bolts and pin sleeves in the fixing holes. The specific structure of the bolts and pin sleeves can be found in Chinese patents: CN201611073892 or CN201621293392; when using this fixing device to fix the patient, the body rack plate needs to be leveled first. Place, then let the patient lie flat on the body frame, then cover the patient with the thermoplastic film, and put the pin sleeves on the thermoplastic film into the corresponding positioning holes, and finally, the medical staff manually press the latch, The lower end of the pin extends out of the pin sleeve and squeezes the pin sleeve. The pin sleeve is squeezed and expanded, thereby clamping the side wall of the positioning hole to achieve the locking function; after use, the medical staff manually pull out each positioning hole. The latch can be unlocked to enable the patient to move, and the thermoplastic film can also be removed from the body frame. For patients who need radiotherapy, whether it is in the early stage of radiotherapy, such as thermoplastic film production, positioning CT scan, location Confirmation and other processes, or in the process of receiving radiotherapy, medical staff need to use the fixing device to fix the patient.

In the prior art, in order to better distinguish the tumor target area from the surrounding tissue, it is usually necessary to use an iodine-containing CT contrast agent (commonly referred to as a contrast agent, which needs to be swallowed by the patient before scanning) for positioning enhancement scanning, so that For more accurate outline of the target area; the common side effect of iodine-containing contrast agents is the gastrointestinal response, and patients often have symptoms of nausea and vomiting; when the patient does not fix with a thermoplastic film, vomiting occurs The patient can vomit freely, and the possibility of suffocation is relatively small; however, in the case of a thermoplastic film fixation, the entire head, neck, and chest of the patient are usually fixed on the body board by a thermoplastic film. Do not tilt your head or probe. In this case, if the patient has vomiting, vomiting cannot be ruled out, asphyxiation, aspiration pneumonia, etc., and even death are likely to occur. There is a greater safety hazard.

Summary of the Invention

To improve the shortcomings in the prior art, the technical solution adopted by the present invention is:

The invention relates to an unlocking device for a radiotherapy body frame plate. The unlocking device is used for ejecting a latch locked in a positioning hole of the body frame plate under the trigger of a patient to realize an unlocking function.

Preferably, the unlocking device is made of a non-metallic material.

Further, the unlocking device is made of a carbon fiber material.

Preferably, the unlocking device is configured to, when triggered, eject the latches on either side of the body shelf plate to achieve unilateral unlocking, or eject the latches on both sides of the body shelf plate to achieve double-sided unlocking.

Preferably, the unlocking device includes an unlocking portion, a transmission portion, and a triggering portion. The unlocking portion is connected to the triggering portion through a transmission portion, and the triggering portion is configured to trigger under an external force and generate triggering power. The transmission part is used to transmit the triggering power, and the unlocking part is used to eject the corresponding latch under the action of the triggering power.

In a preferred solution, the unlocking device includes a top plate and a base. The base is provided with a first chute and a plurality of second chute. The top plate is disposed above the base and is used for closing the first The chute and the second chute, the top plate is provided with a plurality of lock holes, each lock hole is coaxial with each positioning hole on one or both sides of the body frame plate, and each lock hole corresponds to each second chute; each The second chute is parallel to each other, and the same end of each second chute is communicated with the first chute through a slot provided on the base;

The unlocking portion includes a slider and a pin, the sliders are respectively disposed in the second chute, one end of the pin is disposed in the lock hole, and the other end is in contact with the slider;

The triggering portion includes a crank-slider mechanism and a handle, the crank-slider mechanism includes a crank and a control block provided in the first chute, and the control block is connected to the base through a spring, and the spring is always at In the stretched state, a spring is used for resetting; the handle is provided on the crank;

The transmission part is disposed in the slot, and each slider is connected to the control block through the transmission part;

The handle is used to trigger unlocking, the slider is used to slide synchronously with the control block, and the corresponding pin is squeezed upward, so that the pin is pushed out of the latch locked in the positioning hole of the body frame plate to achieve one side Unlock or unlock on both sides.

Preferably, the lock hole is a stepped hole, the pin shaft has a cylindrical structure, and a side ring of the pin shaft is provided with a retaining ring, and the stop ring is used to prevent the pin shaft from falling out of the lock hole.

Preferably, the lower end of the pin shaft is a hemispherical structure or an elliptical structure or a dish-shaped structure.

In a preferred solution, the upper surface of the slider includes a horizontal plane and an inclined plane, and the height of the inclined plane gradually increases along the direction from the horizontal plane to the inclined plane; the transmission portion is connected to the slider near the At the end of the horizontal plane, initially, each slider is located at the end corresponding to the second chute, and the bottom of the pin is in contact with the horizontal plane. The top of the pin does not extend the corresponding keyhole. When unlocking, Each slider is located at the other end corresponding to the second chute, and the bottom of the pin shaft is in contact with the inclined surface, and the distance that the pin shaft extends out of the corresponding lock hole is the largest. After unlocking, under the action of the spring, the slider automatically resets and returns to the initial position. The corresponding pin is also automatically dropped under the action of gravity and stops on the horizontal surface of the slider, and finally returns to the original position. For the next unlock operation.

Preferably, the inclined surface is an arc-shaped inclined surface.

Preferably, the transmission part is a connecting rod or a connecting piece.

In a preferred solution, the slot includes a plurality of lateral slots and a plurality of longitudinal slots, wherein the lateral slots are perpendicular to the length direction of the base, and the longitudinal slots are parallel to the length direction of the base ; One end of each longitudinal slot is connected to each second slot, and the other end is respectively connected to a horizontal slot, the horizontal slot is connected to the first slot through another longitudinal slot; A transverse slot is connected to an adjacent longitudinal slot.

Preferably, the crank-slider mechanism further includes a connecting rod, the control block includes a first end and a second end, wherein the spring and the transmission portion are both connected to the second end, and the first One end is hinged to one end of the link, the other end of the link is hinged to one end of the crank, and the other end of the crank is hinged to the base.

Preferably, the first chute and the second chute are both disposed along a length direction of the base.

Preferably, each of the top plate and the bottom plate has the same shape as the body frame plate.

In one solution, the crank is a linear structure. Initially, the control block is located at one end of the first chute, and the included angle between the connecting rod and the crank is less than 90 degrees, and the handle is vertical. Connected to the side of the crank located inside the base; when the handle is pressed to the lowest position, the control block is located at the other end of the first chute and unlocked.

In another solution, the crank includes a rod one and a rod two, one end of the rod one is connected to one end of the rod two, and the joint is hinged to the base, and the angle between the rod one and the rod two is greater than 90 degrees, The other end of the second rod is hinged to the connecting rod, and the handle is vertically connected to a side of the first rod located inside the base. Initially, the control block is at one end of the first chute. And the connecting rod and the rod are co-linear; when the handle is pressed to the lowest position, the control block slides to the other end of the first chute and completes unlocking.

A body frame board with an unlocking function includes the foregoing unlocking device. The upper part of the lock hole is used to receive a pin and a pin sleeve for fixing a thermoplastic film, and the lower part of the lock hole is used to receive one end of the pin shaft. At this time, for the same lock hole, the pin and the pin are exactly coaxial. In the locked state, the pin is clamped in the lock hole by pressing the pin sleeve, and the pin is below the pin. When unlocking, the slider can be in the Under the action of external force, the pin is squeezed upward, so that the pin can eject the upper pin, thereby effectively unlocking.

Compared with the prior art, the use of the unlocking device for a radiotherapy body rack board and the body rack board with an unlocking function provided by the present invention has the following beneficial effects:

1. The unlocking device is compact in structure, easy to use, and has an unlocking function. In an emergency, such as vomiting, the patient who is fixed on the body board can unlock it by himself, which can effectively solve the existing technology. The disadvantages.

2. The unlocking device can effectively realize the one-side unlocking or double-side unlocking function of the body frame board in the triggered state.

3. The unlocking device has an automatic reset function, which can realize continuous and multiple unlocking without additional operations, which is very convenient to use.

4. The unlocking device can be detachably installed under the body frame plate, which is more convenient for use with the body frame plate.

5. The unlocking device triggers unlocking by pressing the handle, so that the patient lying flat and fixed on the body rack can complete the unlocking more conveniently, easily, and labor-saving.

6. In the unlocking device, the control block and each slider can be synchronized to move under the condition of triggering. The synchronization is good and the precision is high, which is beneficial to better realize the unlocking and resetting functions.

7. The main body board has a compact structure, which not only has the unlocking function, but also has a lower cost and is safe and convenient to use.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the embodiments of the present invention more clearly, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore are not It should be regarded as a limitation on the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without paying creative work.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an unlocking device provided in Embodiment 1 of the present invention.

FIG. 2 is a top view of FIG. 1.

FIG. 3 is a schematic structural diagram of a base in an unlocking device provided in Embodiment 1 of the present invention.

FIG. 4 is a schematic diagram of a partial structure of a base in an unlocking device provided in Embodiment 1 of the present invention.

FIG. 5 is a schematic partial structural diagram of a crank-slider mechanism in an unlocking device provided in Embodiment 1 of the present invention.

FIG. 6 is a schematic diagram of a position of a crank-slider mechanism during an initial state (or before unlocking) of an unlocking device provided in Embodiment 1 of the present invention.

FIG. 7 is a schematic structural diagram of a pin in an unlocking device provided in Embodiment 1 of the present invention.

FIG. 8 is a schematic structural diagram of a slider in an unlocking device provided in Embodiment 1 of the present invention.

FIG. 9 is a schematic diagram of an unlocking device provided in Embodiment 1 of the present invention. At the beginning (or before unlocking), a position of a slider and a corresponding pin.

FIG. 10 is a schematic diagram of a position of a slider and a corresponding pin when an unlocking device is provided in Embodiment 1 of the present invention.

FIG. 11 is a schematic view of setting a body frame plate on the unlocking device before actual use.

FIG. 12 is a schematic structural diagram of an unlocking device provided in Embodiment 2 of the present invention.

FIG. 13 is a schematic diagram of a partial structure of a base in an unlocking device provided in Embodiment 2 of the present invention.

FIG. 14 is a schematic structural diagram of an unlocking device provided in Embodiment 3 of the present invention.

FIG. 15 is a schematic diagram of a position of a crank-slider mechanism at an initial stage (or before unlocking) of an unlocking device provided in Embodiment 3 of the present invention.

FIG. 16 is a schematic diagram of a position of a crank-slider mechanism when an unlocking device is provided in Embodiment 3 of the present invention.

FIG. 17 is a partial structural schematic view of a body frame plate with an unlocking function provided in Embodiment 4 of the present invention.

Explanation of marks in the figure

Unlocking device 101, body frame plate 102, positioning hole 103,

Top plate 201, keyhole 202, pin 203, opening 204, positioning plate 205,

Base 301, crank-slider mechanism 302, transmission 303, first chute 304, second chute 305, notch 306, slider 307, handle 308, groove 309, spring 310,

Longitudinal notch 401, transverse notch 402,

Crank 501, control block 502, connecting rod 503, cylindrical shaft 504, first end 505, second end 506, rod one 507, rod two 508,

Retaining ring 601, hemispherical structure 602,

Horizontal plane 701, inclined plane 702.

detailed description

The invention provides an unlocking device for a radiotherapy body rack plate. The unlocking device is made of a non-metallic material, that is, the unlocking device does not involve a metal material, so as not to affect the radiotherapy rays during the radiotherapy process; in practice, Before using the existing body frame plate to fix the patient and perform radiotherapy, the unlocking device can be detachably disposed below the body frame plate to support the body frame plate; at the same time, the patient is fixed by the device (that is, the background: The patient is fixed between the thermoplastic film and the body frame plate, and the bolt is used to lock the thermoplastic film and the body frame plate.) When the patient vomits, the patient can manually trigger the unlocking device. After the trigger, the unlocking device is unlocked. The device can be ejected (or ejected) and locked by the latch in the positioning hole of the body frame plate, so that the thermoplastic film can be separated from the body frame plate, which can effectively achieve the unlocking function, so that the patient can vomit freely, which can effectively Solve the disadvantages in the prior art.

As described in the background, in the prior art, in the commonly used body frame boards, the positioning holes are respectively provided at the edges of the two sides of the body frame board, and the fixing holes in the thermoplastic film are also provided at the edges of the thermoplastic film. And the fixing holes correspond to the positions of the positioning holes one by one; when performing the fixation, the patient needs to lie flat on the body frame board, and then cover the patient with a thermoplastic film, and use the pins to insert the fixation on both sides of the body frame board. In the hole and the positioning hole, the thermoplastic film is locked on the body frame board to achieve effective fixation of the patient; therefore, when the unlocking device is used for unlocking, the present invention uses two feasible solutions, solution one: When the unlocking device is triggered, the latch on either side of the body rack plate is ejected to achieve unilateral unlocking, and the patient can freely vomit from the unlocked side; Solution 2: When the unlocking device is triggered, the body rack plate is ejected two times. The side pins (that is, all the pins are ejected) are unlocked on both sides. At this time, the thermoplastic film can be completely detached from the body frame board, and the patient can freely vomit from any side of the body frame board.

In addition, in a preferred solution, the unlocking device can be preferably made of a low-density, high-strength non-metallic material, such as carbon fiber material, synthetic carbon fiber material, synthetic plastic, etc., in order to minimize the obstacle to the treatment rays. The relevant parts of the unlocking device can be made of carbon fiber material. Because in the prior art, the commonly used body frame plates are made of carbon fiber material. The carbon fiber material has high strength and has a small impact on radiation. Therefore, the unlocking device uses Made of carbon fiber material is more conducive to radiotherapy.

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. The components of embodiments of the invention, generally described and illustrated in the figures herein, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall into the protection scope of the present invention.

Example 1

This embodiment provides an unlocking device for a radiotherapy body rack plate, which includes an unlocking portion, a transmission portion, and a triggering portion. The unlocking portion is connected to the triggering portion through the transmission portion, and the triggering portion is used to trigger under the action of an external force, and Trigger power is generated; the transmission part is used to transmit the trigger power; the unlocking part is used to eject the corresponding latch under the action of the trigger power.

In this embodiment, when the unlocking device 101 is triggered, the latch on either side of the body rack plate 102 is ejected to achieve unilateral unlocking;

As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, specifically, in this embodiment, the unlocking device 101 includes a top plate 201 and a base 301, and a first sliding slot 304 and a plurality of second sliding slots are provided in the base 301. The groove 305, the unlocking portion includes a slider 307 and a pin 203, and the triggering portion includes a crank-slider mechanism 302 and a handle 308.

In this embodiment, a plurality of second chute 305 are parallel to each other, and the same end of each second chute 305 is communicated with the first chute 304 through a slot 306 provided on the base 301 respectively; the second chute Sliders 307 are respectively provided in 305; as shown in FIG. 5, in this embodiment, the first chute 304 and the second chute 305 are arranged along the length direction of the base 301 (the length direction of the base 301 is the patient lying Length direction after the body frame plate 102), and the dimensions (including length, width, and height) of each second slide groove 305 are the same, and the size of the slider 307 in each second slide groove 305 is also the same, each slider When 307 moves in the length direction of the slider 307, each slider 307 moves in the length direction of the base 301;

In this embodiment, the crank-slider mechanism 302 includes a crank 501 and a control block 502 provided in the first chute 304 (in this embodiment, to facilitate the The slider 307 is distinguished, so the slider in the crank-slider mechanism 302 is referred to as the control block 502, and the crank 501 in the crank-slider mechanism 302 is indirectly connected to the control block 502. The handle 308 is provided on the crank 501. The handle 308 is used to trigger unlocking; each slider 307 is connected to the control block 502 through a transmission part 303 provided in the slot 306, and the control block 502 is connected to the base 301 through a spring 310. The spring 310 is always in a stretched state. That is, whether in the initial state (that is, when it is not triggered) or in the triggered state, the spring 310 is always in a stretched state, so that the spring 310 can play a good reset effect; in this embodiment, the crank- The slider mechanism 302 is used to convert the rotation of the crank 501 into a linear movement of the control block 502, and the linear movement of the control block 502 can cause each slider 307 to move linearly in the corresponding second chute 305, thereby ensuring smooth unlocking;

In this embodiment, the transmission part 303 uses a connecting rod or a connecting piece. The connecting rod or the connecting piece has a certain rigidity, and no deformation occurs during use, which is beneficial to achieve synchronous transmission, that is, it is beneficial to the patient when the handle is pulled. (Ie, at the time of triggering), while the control blocks 502 slide along the first chute 304, the sliders 307 in each second chute 305 can slide along with the control block 502, and the sliding distance is the same, thereby effectively achieving synchronization Slide to achieve simultaneous unlocking of multiple bolts, and to achieve synchronous reset after unlocking, so as to unlock next time, so that the unlocking device 101 can continuously achieve the unlocking function, and there is no need for additional clearance between adjacent unlocks The operation is very convenient; as shown in Fig. 4, Fig. 5, and Fig. 6, in this embodiment, initially, under the action of the spring force (restoring force) of the spring 310, the control block 502 is pressed against the first slide One end of the groove 304, and at the same time, the slider 307 in each of the second slide grooves 305 is simultaneously pressed on the end corresponding to the second slide groove 305. In this embodiment, the spring 310 is also a non-metal spring 310, for example, , The plastic spring 310, such as the SPEC plastic spring 310, is not repeated here.

In this embodiment, the top plate 201 is disposed above the base 301. The top plate 201 is used to close the first chute 304 and the second chute 305, so that the control block 502 and each slider 307 can slide in the closed chute. Conducive to improving accuracy; the top plate 201 is provided with a plurality of lock holes 202, one end of the pin 203 is set in the lock hole 202, and the other end is in contact with the slider 307. When the unlocking device 101 is placed below the body frame plate 102 , Each lock hole 202 on the top plate 201 is coaxial with the positioning hole 103 of the body frame plate 102 (that is, one-to-one correspondence, and has been unlocked subsequently), and each lock hole 202 is corresponding to each second sliding slot 305 in the base 301 Correspondence; In actual use, when the patient turns the handle 308 to unlock (or trigger the unlock), the rotation of the handle 308 causes the crank 501 to rotate, and the crank 501 drives the control block 502 to slide in a direction away from the spring 310, and the control block 502 The sliding can simultaneously drive each slider 307 to slide along the corresponding second chute 305 (that is, the slider 307 and the control block 502 slide synchronously). During the sliding process of the slider 307, each slider 307 squeezes the corresponding Pin 203, so that pin 203 is gradually ejected The latch is fastened in the positioning hole 103 of the body frame plate 102 to achieve the unlocking function. After the unlocking is completed, after the patient releases the handle, the control block 502 and the sliders 307 return to the initial position under the action of the spring 310 restoring force. , As shown in Figure 4 or Figure 5 or Figure 6, in order to unlock next time;

In this embodiment, the top plate 201 is detachably disposed on the base 301. For example, the top plate 201 can be fixed to the base 301 by, for example, dry non-metal screws or bolts, to facilitate disassembly, and at the same time facilitate assembly and maintenance of the interior of the base 301.

In this embodiment, the “initial time” and “initial state” both indicate that the handle 308 is not triggered for unlocking, and details are not described herein again.

In this embodiment, the crank-slider mechanism 302 further includes a connecting rod 503, and the control block 502 includes a first end 505 and a second end 506, wherein the spring 310 and the transmission portion 303 are both connected to the second end of the control block 502 506, the first end 505 of the control block 502 is hinged to one end of the connecting rod 503, the other end of the connecting rod 503 is hinged to one end of the crank 501, and the crank 501 is hinged to the base 301; as shown in FIG. 5 or FIG. In the example, the crank 501 and the connecting rod 503 are both disposed in the groove 309 connected to the first chute 304. One end of the crank 501 and the second end 506 of the control block 502 are respectively provided with a cylindrical shaft. A sleeve is respectively provided to realize articulation through the cooperation of the sleeve and a cylindrical shaft. In addition, a cylindrical shaft 504 is provided in the groove 309 of the base 301, and a sleeve is provided on the crank 501. Hinged joint, so that the crank 501 is hinged to the base 301, and the crank 501 can be rotated around the hinged joint under the action of external force;

In a preferred solution provided by this embodiment, the crank 501 in the crank-slider mechanism 302 is a linear structure; under the action of the restoring force of the spring 310, initially, as shown in FIG. 5 or FIG. 6, the control block 502 is at one end of the first chute 304, and the angle between the connecting rod 503 and the crank 501 is less than 90 degrees. The handle 308 is vertically connected to the side of the crank 501 located (or facing) inside the base 301 (as shown in FIG. 1 or FIG. 2). (Shown), in order to facilitate the patient lying on and fixed on the body frame plate 102, the handle 308 can be held by hand so as to trigger the unlocking at any time; when the patient triggers the unlocking, the patient only needs to press the handle 308 to the lowest position by hand, As shown by the arrowed curve in FIG. 6, the control block 502 slides to the other end of the first chute 304 at this time, as shown by the arrowed straight line in FIG. 6. At the same time, the movement of the control block 502 drives the Each slider 307 is unlocked.

In this embodiment, the unlocking is triggered by pressing the handle 308, which is more convenient for patients lying on their backs. At the same time, because the patient's arm movement is also greatly restricted after being fixed, in the actual use process, the pressing The trigger method is the most convenient, labor-saving and effective trigger method.

As shown in FIG. 8, in this embodiment, the upper surface of the slider 307 includes a horizontal plane 701 and an inclined plane 702, and the height of the inclined plane 702 gradually increases along the direction from the horizontal plane 701 to the inclined plane 702; the transmission part 303 is connected An end of the slider 307 near the horizontal plane 701; as shown in FIG. 9, initially, each slider 307 is located at one end corresponding to the second chute 305, and the bottom of the pin 203 is in contact with the horizontal plane 701, and the pin 203 The corresponding keyhole 202 does not extend from the top of the slider; when unlocking, under the action of external force, each slider 307 moves to the other end synchronously. Finally, each slider 307 is located at the other end corresponding to the second chute 305, such as As shown in FIG. 10, at this time, the bottom of the pin 203 is in contact with the inclined surface 702, and the pin 203 extends the maximum distance corresponding to the lock hole 202, so as to effectively eject the upper bolt; after unlocking, the role of the spring 310 Next, the slider 307 is automatically reset and returns to the initial position. The corresponding pin 203 also drops under the action of gravity and stops on the horizontal plane 701 of the slider 307, and finally returns to the original position for the next time. Unlock operation.

In a preferred solution, the inclined surface 702 of the slider 307 may be an arc-shaped inclined surface.

In this embodiment, the lock hole 202 is a stepped hole, and the pin 203 is a cylindrical structure, as shown in FIG. 7, and a retaining ring 601 is provided on the side of the pin 203. The retaining ring 601 is used to prevent the pin 203 from being locked from the lock. The hole 202 falls off; for example, in this embodiment, as shown in FIG. 9 or FIG. 10, the maximum diameter of the retaining ring 601 is larger than the minimum diameter of the lock hole 202 so that the pin 203 does not move from the highest position when it moves to the highest position. The top of the keyhole 202 comes off.

Preferably, the lower end of the pin 203 is a hemispherical structure 602 or an elliptical structure or a dish-shaped structure, as shown in FIG. 7 or FIG. 9 or FIG. 10; in order to better cooperate with the slider 307, When 307 drives the pin 203, the collision between the two can be effectively reduced, making the unlocking process more rounded and smoother.

The distribution of the notches 306 on the base 301 can be determined according to the actual position of the second chute 305, and the notches 306 connected to different second chute 305 may not interfere with each other, as shown in FIGS. 3 and 4. In a preferred solution provided by this embodiment, the slot 306 includes a plurality of lateral slots 402 and a plurality of longitudinal slots 401, wherein the lateral slots 402 are perpendicular to the length direction of the base 301, and the longitudinal slots 401 are parallel to the base 301 length direction; one end of each longitudinal slot 401 is connected to each second sliding slot 305, and the other end is respectively connected to a transverse slot 402, which is connected to the first sliding slot through another longitudinal slot 401 304; Since the second chute 305 needs to correspond to the position of the positioning hole 103, when the distance between two adjacent second chute 305 is short, one of the second chute 305 easily interferes with the other second The sliding slot 305, so at this time, the longitudinal slot 401 where interference occurs can be connected to the adjacent longitudinal slot 401 through a lateral slot 402, so that interference can be effectively avoided.

In this embodiment, the width of the longitudinal notch 401 is smaller than the width of the first chute 304 and the second chute 305, and the width of the lateral notch 402 is greater than or equal to the length of the first chute 304 minus the length of the control block 502 The sum of the rear and the width of the transmission portion 303, so that the lateral notch 402 does not affect the unlocking process.

As shown in FIG. 11, in a preferred solution, the top plate 201 and the bottom plate are respectively the same shape as the body frame plate 102, so that it is more convenient to cooperate with the body frame plate 102 in actual use.

In a further solution, an opening 204 is provided on the top plate 201 at a position corresponding to the crank-slider mechanism 302, as shown in FIG. 1 or FIG. 2, to facilitate the operation of the crank-slider mechanism 302; as shown in FIG. 11, the top plate 201 is provided with a plurality of positioning plates 205. The positioning plates 205 are used for positioning the installation of the body frame plate 102. When the unlocking device 101 is used, the body frame plate 102 can be placed on the top plate 201 through the positioning plate 205. At this time, the lock holes 202 on the top plate 201 correspond to the positioning holes 103 on the body frame plate 102 respectively, which is convenient for unlocking.

Example 2

The main difference between this embodiment 2 and the above embodiment 1 is that an unlocking device 101 for a radiotherapy body rack plate 102 provided in this embodiment can eject the latches on both sides of the body rack plate 102 when triggered. To achieve double-sided unlocking;

As shown in FIG. 12, this embodiment is based on Embodiment 1. Lock holes 202 are provided at all positioning holes 103 on the top plate 201 corresponding to the two sides of the body frame plate 102, and pins are respectively provided in the lock holes 202. 203; second slide grooves 305 are provided on the base 301 at positions corresponding to all the lock holes 202, as shown in FIG. 13, all the second slide grooves 305 communicate with the first slide groove 304 through the notches 306, and Each second chute 305 is provided with a slider 307, and each slider 307 is connected to the control block 502 in the first chute 304 through the transmission portion 303 to realize synchronous movement. When using the unlocking device 101, the patient presses The handle 308 can drive the control block 502 to move along the first chute 304, thereby driving each slider 307 to synchronously move along the corresponding second chute 305, and in the process of moving, push the corresponding pin 203 out of the lock hole 202, so that the upper latch locked in the positioning hole 103 of the body frame plate 102 is popped up to complete the unlocking. After the patient releases the handle 308, the handle 308 control block 502, each slider 307, and each pin 203 return to their initial positions, respectively. To unlock it next time.

Example 3

The main difference between this embodiment 3 and the above-mentioned embodiment 1 or embodiment 2 is that in the unlocking device 101 for the radiotherapy body rack plate 102 provided in this embodiment, the crank 501 includes a rod 507 and a rod 508, As shown in FIG. 14, one end of rod one 507 is connected to one end of rod two 508, and the joint is hinged to the base 301; the angle between rod one 507 and rod two 508 is greater than 90 degrees, and the other end of rod two 508 is hinged to the

connector Rods

503 and 507 can extend out of the base 301. The handle 308 is vertically connected to the side of the base 507 on the inside of the base 301. It is convenient for patients lying on and fixed to the body frame plate 102. The handle can be held by hand 308, so as to trigger unlocking at any time; as shown in FIG. 15, initially, the control block 502 is located at one end of the first chute 304, and the connecting rod 503 and the rod two 508 are in line and are simultaneously accommodated in the groove 309; When the patient triggers the unlock, the patient only needs to press the handle 308 to the lowest position by hand. When the handle 308 is pressed to the lowest position, the control block 502 slides to the other end of the first chute 304, as shown in FIG. 16, while Due to the movement of the control block 502, each slider 307 is driven to complete unlocking.

Example 4

This embodiment provides a body frame plate with an unlocking function, which includes the unlocking device 101 in Embodiment 1 or 2 or 3. In this embodiment, the thickness of the top plate 201 is thicker, as shown in FIG. 17, so that The upper part of the lock hole 202 can be used to receive the pin and pin sleeve for fixing the thermoplastic film, which is equivalent to the positioning hole on the body frame board in the prior art; the lower part of the lock hole 202 is used to receive one end of the pin 203; at this time For the same lock hole, the latch pin and the pin shaft 203 are exactly coaxial. In the locked state, the latch pin is clamped in the lock hole 202 by pressing the pin sleeve, and the pin shaft 203 is below the latch pin; when unlocking, the slider 307 The pin 203 can be squeezed upward under the action of an external force, so that the pin 203 can eject the upper pin, thereby effectively achieving the unlocking function, and making the body frame plate a body frame plate having an unlocking function.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present invention. It should be covered by the protection scope of the present invention.

Claims

An unlocking device for a radiotherapy body frame plate is characterized in that the unlocking device is used to eject a latch locked in a positioning hole of the body frame plate under the trigger of a patient to realize the unlocking function.
The unlocking device for a radiotherapy body rack plate according to claim 1, wherein the unlocking device is configured to, when triggered, eject a latch on either side of the body rack plate to achieve unilateral unlocking, or, eject the body The latches on both sides of the shelf plate can be unlocked on both sides.
The unlocking device for a radiotherapy body rack according to any one of claims 1-2, wherein the unlocking device comprises an unlocking portion, a transmission portion, and a triggering portion, and the unlocking portion is connected with the triggering by the transmission portion. The triggering part is used to trigger under the action of external force and generate triggering power, the transmission part is used to transmit the triggering power, and the unlocking part is used to eject the corresponding latch under the action of the triggering power.
The unlocking device for a radiotherapy body rack plate according to claim 3, comprising a top plate and a base, wherein the base is provided with a first chute and a plurality of second chutes, and the top plate is disposed on the The top of the base is used to close the first chute and the second chute. The top plate is provided with a plurality of lock holes, each lock hole is coaxial with each positioning hole on one or both sides of the body frame plate, and each lock hole Respectively corresponding to each second chute; each second chute is parallel to each other, and the same end of each second chute is in communication with the first chute through a slot provided on the base;

The unlocking portion includes a slider and a pin, the sliders are respectively disposed in the second chute, one end of the pin is disposed in the lock hole, and the other end is in contact with the slider;

The triggering portion includes a crank-slider mechanism and a handle, the crank-slider mechanism includes a crank and a control block provided in the first chute, and the control block is connected to the base through a spring, and the spring is always at In the stretched state, a spring is used for resetting; the handle is provided on the crank;

The transmission part is disposed in the slot, and each slider is connected to the control block through the transmission part;

The handle is used to trigger unlocking, the slider is used to slide synchronously with the control block, and the corresponding pin is squeezed upward, so that the pin is pushed out of the latch locked in the positioning hole of the body frame plate to achieve one side Unlock or unlock on both sides.
The unlocking device for a radiotherapy body rack plate according to claim 4, wherein the lock hole is a stepped hole, the pin shaft is a cylindrical structure, and a side ring of the pin shaft is provided with a retaining ring, and The retaining ring is used to prevent the pin shaft from falling out of the lock hole; the lower end of the pin shaft is a hemispherical structure or an oval structure or a dish structure.
The unlocking device for a radiotherapy body rack plate according to claim 4, wherein the upper surface of the slider includes a horizontal plane and an inclined plane, and the direction of the inclined plane from the horizontal plane to the inclined plane The height gradually increases; the transmission part is connected to an end of the slider near the horizontal plane.
The unlocking device for a radiotherapy body rack plate according to claim 4, wherein the slot includes a plurality of lateral slots and a plurality of longitudinal slots, wherein the lateral slots are perpendicular to the length of the base Direction, the longitudinal slot is parallel to the length direction of the base; one end of each longitudinal slot is connected to each second sliding slot, and the other end is connected to a transverse slot, and the transverse slot passes through another longitudinal slot. The mouth is connected to the first chute; the longitudinal groove in which the interference occurs is connected to the adjacent longitudinal groove through a transverse groove.
The unlocking device for a radiotherapy body rack plate according to claim 4, wherein the crank-slider mechanism further comprises a connecting rod, and the control block includes a first end and a second end, wherein the The spring and the transmission part are both connected to the second end, the first end is hinged to one end of the link, the other end of the link is hinged to one end of the crank, and the other end of the crank is hinged to the Base.
The unlocking device for a radiotherapy body rack plate according to claim 8, wherein the crank is a linear structure, and initially, the control block is located at one end of the first chute, and the connection An included angle between the lever and the crank is less than 90 degrees, and the handle is vertically connected to a side of the crank located inside the base;

Or, the crank includes a rod one and a rod two, one end of the rod one is connected to one end of the rod two, and the joint is hinged to the base, and the angle between the rod one and the rod two is greater than 90 degrees, and the rod two The other end is hinged to the connecting rod, and the handle is vertically connected to a side of the rod located inside the base.
A body frame board with an unlocking function, comprising the unlocking device according to any one of claims 4-9, an upper part of the lock hole is used to receive a pin and a pin sleeve for fixing a thermoplastic film, and a lower part of the lock hole One end for receiving the pin.