Wrist restraint device used on CT examination bed

Abstract

The present invention relates to a wrist restraint and fixing device used on a CT examination bed, comprising a bed body, a headrest installed at the head end of the bed body, and characterized in that: the wrist fixing device also includes a U-shaped frame, a side plate and a restraint and fixing mechanism, the U-shaped frame is installed at the head end of the bed body, and the inner sides of the two vertical sides of the U-shaped frame are respectively provided with a first T-shaped groove; the side plates are fixed on both sides of the bed body, and the inner sides of the side plates are provided with a plurality of second T-shaped grooves; the restraint and fixing mechanism includes a restraint seat, a restraint belt, a V-shaped clip and a first torsion spring, and a T-shaped block is provided on the back of the restraint seat, and the T-shaped block is used to be connected with the first T-shaped groove or the second T-shaped groove. The present invention has an ingenious structure and a reasonable design, and can reliably restrain and fix the patient's wrist, avoiding the patient's hand movements and non-cooperation during CT examination, resulting in image artifacts, and reducing the incidence of missed diagnosis or misdiagnosis.

Description

Technical Field

[0001] The invention relates to a restraint device, in particular to a wrist restraint fixing device used on a CT examination bed, belonging to the technical field of medical auxiliary equipment. Background Art

[0002] CT examination has now become an important examination item in hospital examinations. The clarity of CT images is crucial for the diagnosis of diseases. Therefore, CT examinations generally require patients to remain in a specific position and remain motionless. Patients' restlessness or lack of cooperation will cause artifacts in CT images and lead to missed or misdiagnosis of the disease, which will have serious consequences. During chest and abdominal CT examinations, patients are required to cooperate and raise their hands to reduce artifacts. For patients who are irritable or uncooperative, especially those with mental illnesses, their sense of cooperation is very poor, and it is difficult for them to keep their hands raised. Often, they put their hands down (placed on the body or dancing in the air) before the examination is over, resulting in artifacts in the CT images and even failing to meet the diagnostic requirements. In order to correctly diagnose the disease, patients can only be examined repeatedly, which brings excessive radiation to the patients and also increases the workload of technicians.

[0003] Therefore, it is necessary to develop a wrist restraint and fixation device for use on a CT examination bed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a wrist restraint and fixation device for use on a CT examination bed. The device has an ingenious structure and a reasonable design, and can reliably restrain and fix the patient's wrist, thereby preventing the patient from moving his hands randomly and not cooperating during a CT examination, causing image artifacts, and reducing the incidence of missed diagnosis or misdiagnosis.

[0005] According to the technical solution provided by the present invention: a wrist restraint and fixing device used on a CT examination bed comprises a bed body, a head support is installed at the head end of the bed body, and is characterized in that: the wrist fixing device also comprises a U-shaped frame, a side plate and a restraint and fixing mechanism, the U-shaped frame is installed at the head end of the bed body, and the inner side surfaces of the two vertical sides of the U-shaped frame are respectively provided with a first T-shaped groove; the side plates are fixed on both sides of the bed body, and the inner side surfaces of the side plates are provided with a plurality of second T-shaped grooves; the restraint and fixing mechanism comprises a restraint seat, a restraint belt, a V-shaped clip and a first torsion spring, a T-shaped block is provided on the back of the restraint seat, and the T-shaped block is used to be connected with the first T-shaped groove or the second T-shaped groove by an embedded card, and one end of the restraint belt is fixedly connected to about At the bottom end of the inner side surface of the restraint seat, an L-shaped belt threading groove is provided inside the restraint seat, the inlet of the L-shaped belt threading groove is located in the middle of the inner side surface of the restraint seat, and the outlet of the L-shaped belt threading groove is located on the top surface of the restraint seat, and the other end of the restraint belt is passed through the side of the restraint seat and led out from the top surface; a clamp installation cavity is also provided inside the restraint seat next to the belt threading groove, and the V-shaped clamp is arranged in the clamp installation cavity, and a rotating shaft is rotatably installed in the middle of the V-shaped clamp, and the two ends of the rotating shaft are installed on both sides of the clamp installation cavity, and a first torsion spring is mounted on the rotating shaft, and the two ends of the first torsion spring are respectively fixedly embedded in the restraint seat and the V-shaped clamp, and the first torsion spring is in a compressed state, and the head end of the V-shaped clamp is tightly against the side of the restraint belt under the action of the first torsion spring.

[0006] As a further improvement of the present invention, the U-shaped frame is connected to the head end of the bed through a telescopic mechanism; the telescopic mechanism includes a smooth guide rod, a screw rod, a nut seat and a turntable, and two smooth guide rods are symmetrically arranged at the head end of the bed located on both sides of the head support, one end of the smooth guide rod is fixedly connected to the bed, and guide through holes are opened on both sides of the U-shaped frame, and the U-shaped frame is slidingly connected to the two smooth guide rods through the guide through holes; a screw rod is arranged at the middle of the head end of the bed located below the head support, one end of the screw rod is rotatably connected to the bed, a screw rod mounting hole is arranged in the middle of the horizontal side of the U-shaped frame, and a nut seat is installed at the position of the outer side of the U-shaped frame corresponding to the screw rod mounting hole, the other end of the screw rod is connected to the nut seat after passing through the screw rod mounting hole, and the turntable is fixedly installed at the end of the screw rod.

[0007] As a further improvement of the present invention, a concave arc-shaped groove is provided at a lower portion of the inner side surface of the restraint seat opposite to the front side of the restraint belt, and a cushion layer is provided on the surface of the concave arc-shaped groove.

[0008] As a further improvement of the present invention, the head end of the V-shaped clamp is provided with saw teeth with arc-shaped tips.

[0009] As a further improvement of the present invention, a pull ring is provided at the end of the restraining belt, which is convenient for tightening the restraining belt for restraint and fixation, and can prevent the restraining belt from accidentally slipping out of the L-shaped belt threading groove when it is loosened.

[0010] As a further improvement of the present invention, the head rest includes a support body, a pillow plate and a sponge pad. The end of the support body close to the bed body is rotatably mounted on the bed body through a pin shaft. A second torsion spring is sleeved on the pin shaft. The two ends of the second torsion spring are respectively fixedly embedded in the bed body and the support body, and the second torsion spring is in a compressed state. The pillow plate is fixedly mounted on the upper surface of the support body, and the sponge pad is fixedly mounted on the upper surface of the pillow plate.

[0011] As a further improvement of the present invention, the main components of the U-shaped frame, the side panels and the restraining and fixing mechanism are all made of high-strength engineering plastics.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1) The present invention has an ingenious structure and a reasonable design. A U-shaped frame on which a restraining and fixing mechanism can be quickly installed is arranged at the head of the bed, and side panels on both sides of the bed on which a restraining and fixing mechanism can be quickly installed can be arranged. During the examination, the U-shaped frame can be flexibly changed according to the actual situation, and the patient's wrist can be reliably restrained and fixed, so as to avoid the patient's hand moving randomly and not cooperating during the CT examination, resulting in image artifacts, and reduce the incidence of missed diagnosis or misdiagnosis.

[0014] 2) The installation position of the restraint fixing mechanism in the present invention can be adjusted according to the length of the patient's arm, and has strong adaptability and high flexibility; since the restraint fixing mechanism can be quickly disassembled, it does not affect the overall appearance of the examination bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural front view of an embodiment of the present invention.

[0016] Figure 2 It is a three-dimensional structural diagram of a U-shaped frame in an embodiment of the present invention.

[0017] Figure 3 for Figure 1 Enlarged section view of surface AA in the figure.

[0018] Figure 4 for Figure 3 The enlarged schematic diagram of point B in FIG.

[0019] Figure 5 It is a top view of the restraining and fixing mechanism structure in an embodiment of the present invention.

[0020] Explanation of the accompanying drawings: 1-bed body, 2-head support, 2.1-support body, 2.2-pillow plate, 2.3-sponge pad, 2.4-second torsion spring, 3-U-shaped frame, 3a-first T-slot, 3b-guide through hole, 3c-screw mounting hole, 4-side plate, 4a-second T-slot, 5-restraint seat, 5a-T-block, 5b-L-shaped belt threading groove, 5c-clip mounting cavity, 5d-concave arc groove, 6-restraint belt, 7-V-shaped clip, 8-first torsion spring, 9-rotating shaft, 10-smooth guide rod, 11-screw, 12-nut seat, 13-turntable, 14-cushion layer, 15-pull ring. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0022] like Figure 1 to Figure 5 As shown, the embodiment discloses a wrist restraint fixing device used on a CT examination bed, comprising a bed body 1, a head support 2 is installed at the head end of the bed body 1, and the wrist fixing device also includes a U-shaped frame 3, a side plate 4 and a restraint fixing mechanism, the U-shaped frame 3 is installed at the head end of the bed body 1, and the inner side surfaces of the two vertical sides of the U-shaped frame 3 are respectively provided with first T-shaped grooves 3a; the side plates 4 are fixed on both sides of the bed body 1, and the inner side surfaces of the side plates 4 are provided with a plurality of second T-shaped grooves 4a; the restraint fixing mechanism includes a restraint seat 5, a restraint belt 6, a V-shaped clip 7 and a first torsion spring 8, the back of the restraint seat 5 is provided with a T-shaped block 5a, the T-shaped block 5a is used to be connected with the first T-shaped groove 3a or the second T-shaped groove 4a, and one end of the restraint belt 6 is fixedly connected to the inner side surface of the restraint seat 5 At the bottom end of the constraint seat 5, an L-shaped belt-threading groove 5b is provided inside the constraint seat 5, the inlet of the L-shaped belt-threading groove 5b is located in the middle of the inner side surface of the constraint seat 5, and the outlet of the L-shaped belt-threading groove 5b is located on the top surface of the constraint seat 5, and the other end of the constraint belt 6 is passed through the side of the constraint seat 5 and led out from the top surface; a clamp installation cavity 5c is also provided inside the constraint seat 5 next to the belt-threading groove 5b, and the V-shaped clamp 7 is arranged in the clamp installation cavity 5c, and a rotating shaft 9 is rotatably installed in the middle of the V-shaped clamp 7, and the two ends of the rotating shaft 9 are installed on both sides of the clamp installation cavity 5c, and a first torsion spring 8 is mounted on the rotating shaft 9, and the two ends of the first torsion spring 8 are respectively fixedly embedded in the constraint seat 5 and the V-shaped clamp 7, and the first torsion spring 8 is in a compressed state. The head end of the V-shaped clamp 7 is tightly abutted against the side of the constraint belt 6 under the action of the first torsion spring 8.

[0023] In clinical application, the patient lies on the bed 1 with the head on the headrest 2. When the patient does not cooperate with the examination and needs to be restrained and fixed on the limbs, the installation position of the restraint and fixation mechanism can be selected according to whether the patient enters the scanning position head first or feet first. If the patient is in the scanning position head first, the restraint and fixation mechanism needs to be installed on the U-shaped frame 3 at the head end of the bed 1. The restraint seat 5 in the restraint fixing mechanism is clamped in the first T-shaped groove 3a on the U-shaped frame 3 through the T-shaped block 5a on its back, and then the tail end of the V-shaped clamp 7 is pressed to further compress the first torsion spring 8. At this time, the head end of the V-shaped clamp 7 is disengaged from the restraint belt 6 and the restraint belt 6 can be pulled upward. After a certain length is pulled out, the patient's wrist is passed through the space surrounded by the restraint belt 6 and the restraint seat 5, and then the restraint belt 6 is continued to be pulled so that the restraint belt 6 binds and fixes the patient's wrist, and then the V-shaped clamp 7 is released. The V-shaped clamp 7 is reset under the action of the first torsion spring 8, and the head end of the V-shaped clamp 7 is tightly against the restraint belt 6, so that the restraint belt 6 cannot move in the opposite direction, thus completing the restraint and fixation of the patient's wrist, avoiding the patient's hand from moving randomly during the CT scanning process, and preventing the occurrence of artifacts that affect the doctor's accurate diagnosis. If the patient is in the scanning position with his feet first, the restraint fixing mechanism needs to be installed on the side plates 4 on both sides of the bed body 1. The restraint seat 5 in the restraint and fixing mechanism is clamped in the second T-shaped slot 4a on the side plate 4 through the T-shaped block 5a on its back. Since there are several second T-shaped slots 4a, the restraint and fixing mechanism can be installed in a suitable position according to the individual situation of the patient, and then the patient's wrist can be restrained in the same way.

[0024] like Figure 1 to Figure 3 As shown, in the present embodiment, the U-shaped frame 3 is connected to the head end of the bed body 1 through a telescopic mechanism; the telescopic mechanism comprises a smooth guide rod 10, a screw rod 11, a nut seat 12 and a turntable 13, and two smooth guide rods 10 are symmetrically arranged at the position of the head end of the bed body 1 located on both sides of the head support 2, one end of the smooth guide rod 10 is fixedly connected to the bed body 1, and guide through holes 3b are opened on both sides of the U-shaped frame 3, and the U-shaped frame 3 is slidably connected to the two smooth guide rods 10 through the guide through holes 3b; a screw rod 11 is arranged at the position below the head support 2 in the middle of the head end of the bed body 1, one end of the screw rod 11 is rotatably connected to the bed body 1, a screw rod mounting hole 3c is arranged in the middle of the horizontal side of the U-shaped frame 3, and a nut seat 12 is installed at the position corresponding to the screw rod mounting hole 3c on the outer side of the U-shaped frame 3, the other end of the screw rod 11 is connected to the nut seat 12 after passing through the screw rod mounting hole 3c, and the turntable 13 is fixedly mounted on the end of the screw rod 11. With such arrangement, the screw rod 11 can be driven to rotate by rotating the turntable 13, and the rotation of the screw rod 11 drives the nut seat 12 and the entire U-shaped frame 3 to slide axially in the horizontal direction along the smooth guide rod 10. In this way, the position of the restraint fixing mechanism can be flexibly adjusted according to the patient's arm length to ensure a reliable restraint effect.

[0025] like Figure 3 As shown, in this embodiment, a concave arc groove 5d is provided at the lower part of the inner side surface of the restraint seat 5 opposite to the front of the restraint belt 6, and a cushion layer 14 is provided on the surface of the concave arc groove 5d. With such a configuration, the wrist of the patient is fixed in a circular space when being restrained. Such a space matches the physiological shape of the wrist, which not only has a better restraining effect, but is also safer. The cushion layer 14 on the surface of the concave arc groove 5d is conducive to protecting the patient. The cushion layer 14 can be made of conventional materials in the prior art, such as sponge, silica gel, rubber, etc.

[0026] like Figure 5 As shown, in this embodiment, the head end of the V-shaped clip 7 is provided with saw teeth with arc-shaped tips. In this way, the V-shaped clip 7 can more stably and reliably press against the restraining belt 6 to prevent the restraining belt 6 from being accidentally loosened.

[0027] like Figure 1 , Figure 3 As shown, in this embodiment, a pull ring 15 is provided at the end of the restraining belt 6. Such a configuration is convenient for tightening the restraining belt 6 for restraint and fixation, and can prevent the restraining belt 6 from accidentally slipping out of the L-shaped belt threading groove 5b when it is loosened.

[0028] like Figure 1 As shown, in this embodiment, the head support 2 includes a support body 2.1, a pillow board 2.2 and a sponge pad 2.3. The end of the support body 2.1 close to the bed body 1 is rotatably mounted on the bed body 1 through a pin shaft. The pin shaft is sleeved with a second torsion spring 2.4. The two ends of the second torsion spring 2.4 are respectively fixedly embedded in the bed body 1 and the support body 2.1. The second torsion spring 2.4 is in a compressed state. The upper surface of the support body 2.1 is fixedly mounted with a pillow board 2.2, and the upper surface of the pillow board 2.2 is fixedly mounted with a sponge pad 2.3. In this way, when the patient is used clinically, the patient's trunk lies on the bed body 1 and the head is placed on the sponge pad 2.3. When the patient's head is exerted downward force due to restlessness, the support body 2.1 will rotate downward around the pin shaft. At this time, the second torsion spring 2.4 is further compressed, unloading the force of the patient's head and reducing the patient's ability to struggle. When the patient regains calm, the support body 2.1 rotates upward under the force of the second torsion spring 2.4 to provide a stable support for the head. Such a head support 2 has a certain elastic buffering effect and can protect the patient.

[0029] In this embodiment, the U-shaped frame 3, the side plates 4 and the main components of the restraining and fixing mechanism are preferably made of high-strength engineering plastics, so that no scanning artifacts will be generated to affect the CT image.

[0030] The above description is only a preferred embodiment of the present invention, and the above specific embodiment is not intended to limit the present invention. Various deformations and modifications may occur within the scope of the technical concept of the present invention, and any modification, modification or equivalent replacement made by a person of ordinary skill in the art based on the above description shall fall within the scope of protection of the present invention.

Claims

1. A wrist restraint fixing device for a CT examination bed, comprising a bed body (1) and a symmetrically fixed mounting 1. A wrist restraint fixing device for a CT examination bed, comprising a bed body (1), wherein a head support (2) is mounted at the head end of the bed body (1), and wherein: The wrist fixing device further comprises a U-shaped frame (3), a side plate (4) and a restraining and fixing mechanism, wherein the U-shaped frame (3) is mounted at the head end of the bed body (1), and the inner side surfaces of the two vertical sides of the U-shaped frame (3) are respectively provided with first T-shaped grooves (3a); the side plates (4) are fixed to both sides of the bed body (1), and the inner side surfaces of the side plates (4) are provided with a plurality of second T-shaped grooves (4a); the restraining and fixing mechanism comprises a restraining seat (5), a restraining belt (6), a V-shaped clamp (7) and a first torsion spring (8), wherein a T-shaped block (5a) is provided on the back of the restraining seat (5), and the T-shaped block (5a) is used for being connected to the first T-shaped groove (3a) or the second T-shaped groove (4a) by being inserted and engaged, and one end of the restraining belt (6) is fixedly connected to the restraining seat (5). 5), an L-shaped belt-threading groove (5b) is provided inside the constraint seat (5) at the bottom end of the inner side surface, the inlet of the L-shaped belt-threading groove (5b) is located in the middle of the inner side surface of the constraint seat (5), the outlet of the L-shaped belt-threading groove (5b) is located on the top surface of the constraint seat (5), and the other end of the constraint belt (6) is inserted into the top surface from the side of the constraint seat (5) and led out; a clamp installation cavity (5c) is also provided inside the constraint seat (5) next to the belt-threading groove (5b), the V-shaped clamp (7) is arranged in the clamp installation cavity (5c), a rotating shaft (9) is rotatably installed in the middle of the V-shaped clamp (7), the two ends of the rotating shaft (9) are installed on the two sides of the clamp installation cavity (5c), a first torsion spring (8) is sleeved on the rotating shaft (9), and the two ends of the first torsion spring (8) are respectively The U-shaped frame (3) is fixedly embedded in the constraint seat (5) and the V-shaped clamp (7), the first torsion spring (8) is in a compressed state, and the head end of the V-shaped clamp (7) is tightly abutted against the side of the constraint belt (6) under the action of the first torsion spring (8); the U-shaped frame (3) is connected to the head end of the bed body (1) through a telescopic mechanism; the telescopic mechanism comprises a smooth guide rod (10), a screw rod (11), a nut seat (12) and a turntable (13); the head end of the bed body (1) is symmetrically provided with two smooth guide rods (10) at the position on both sides of the head support (2); one end of the smooth guide rod (10) is fixedly connected to the bed body (1); guide through holes (3b) are opened on both sides of the U-shaped frame (3); the U-shaped frame (3) is connected to the two smooth guide rods through the guide through holes (3b). (10) Sliding connection; a screw rod (11) is provided at a position in the middle of the head end of the bed body (1) and below the headrest (2); one end of the screw rod (11) is rotatably connected to the bed body (1); a screw rod mounting hole (3c) is provided in the middle of the horizontal side of the U-shaped frame (3); a nut seat (12) is installed at a position corresponding to the screw rod mounting hole (3c) on the outer surface of the U-shaped frame (3); the other end of the screw rod (11) passes through the screw rod mounting hole (3c) and is connected to the nut seat (12); the turntable (13) is fixedly mounted on the end of the screw rod (11); a concave arc groove (5d) is provided at a position on the lower part of the inner side surface of the constraint seat (5) opposite to the front side of the constraint belt (6); and a cushion layer (14) is provided on the surface of the concave arc groove (5d).

2. The wrist restraint and fixation device for use on a CT examination bed as claimed in claim 1, characterized in that: The head end of the V-shaped clamp (7) is provided with saw teeth with arc-shaped tips.

3. The wrist restraint and fixation device for use on a CT examination bed as claimed in claim 1, characterized in that: A pull ring (15) is provided at the end of the restraining belt (6).

4. The wrist restraint and fixation device for use on a CT examination bed as claimed in claim 1, characterized in that: The headrest (2) comprises a support body (2.1), a pillow plate (2.2) and a sponge pad (2.3); one end of the support body (2.1) close to the bed body (1) is rotatably mounted on the bed body (1) via a pin shaft; a second torsion spring (2.4) is sleeved on the pin shaft; two ends of the second torsion spring (2.4) are respectively fixedly embedded in the bed body (1) and the support body (2.1); the second torsion spring (2.4) is in a compressed state; the pillow plate (2.2) is fixedly mounted on the upper surface of the support body (2.1); and the sponge pad (2.3) is fixedly mounted on the upper surface of the pillow plate (2.2).

5. The wrist restraint and fixation device for use on a CT examination bed as claimed in claim 1, characterized in that: The U-shaped frame (3), the side panels (4) and the main components of the restraining and fixing mechanism are all made of high-strength engineering plastics.

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