Mobile CT ambulance stretcher stable docking positioning structure

Abstract

The application provides a mobile CT ambulance stretcher stable butt joint positioning structure, which comprises a vehicle main body, a damping underframe is arranged on the vehicle main body frame, the damping underframe comprises a side stand arranged at one end, a brain CT device is arranged on the side stand, a stretcher vehicle is arranged on the damping underframe, a butt joint positioning device is arranged between one end of the stretcher vehicle and the side stand, the butt joint positioning device comprises a plug rod arranged at the end of the stretcher vehicle and a positioning seat arranged on the side stand, a positioning stop portion is arranged on the outer wall of the middle part of the plug rod, the positioning seat comprises a positioning hole and a guide cone, the plug rod is inserted into the positioning hole so that the positioning stop portion is stopped on the guide cone, a locking hole is arranged at the front end of the plug rod, a telescopic locking pin is arranged on the side wall of the positioning seat, the locking pin is inserted into the locking hole, and the positioning and alignment problem of the stretcher vehicle and the brain CT device are solved.

Description

Technical Field

[0001] This utility model relates to the field of ambulances, and in particular to a stable docking and positioning structure for a mobile CT ambulance stretcher. Background Technology

[0002] Stroke is generally classified into ischemic and hemorrhagic types, each requiring different treatments. Without a CT scan, it's difficult to determine which emergency approach to take. Since the golden window for stroke treatment is typically 3-4.5 hours, waiting for the patient to arrive at the hospital before a CT scan and waiting for the results could mean missing that crucial window for intervention. Therefore, existing technology includes new ambulances that integrate brain CT equipment into their transport systems. Upon receiving a patient, a CT scan is performed as soon as possible at the nearest hospital, advancing the rescue process.

[0003] Hospital CT scanners typically have a mobile platform that moves along a fixed path. The patient lies on the platform and is then moved to the CT scanner's scanning position. However, because ambulances lack the capacity to accommodate such complex structures, stretchers are often used as a temporary substitute for the mobile platform in conjunction with the scan. With traditional CT ambulances, the unpredictable stopping position of the stretcher can cause the patient's head to deviate from the scan center, leading to inaccurate scan results and delays in emergency treatment. Utility Model Content

[0004] This invention provides a stable docking and positioning structure for a mobile CT ambulance stretcher, which solves the problem of positioning and alignment between the stretcher and the brain CT equipment.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a stable docking and positioning structure for a mobile CT ambulance stretcher, including a vehicle body, a vibration-damping base frame on the vehicle body frame, a side frame at one end of the vibration-damping base frame, a brain CT device on the side frame, a stretcher cart on the vibration-damping base frame, a docking and positioning device between one end of the stretcher cart and the side frame, the docking and positioning device including a rod at the end of the stretcher cart and a positioning seat on the side frame, a positioning stop on the outer wall of the middle part of the rod, a positioning hole and a guide cone on the positioning seat, the rod being inserted into the positioning hole so that the positioning stop is stopped on the guide cone, a locking hole at the front end of the rod, and a retractable locking pin on the side wall of the positioning seat, the locking pin being inserted into the locking hole.

[0006] In the preferred embodiment, the locking pin is provided with a guide slope, the side wall of the positioning seat is provided with a side hole, a first spring is provided in the side hole, and a cover is provided at the end of the side hole. One end of the first spring abuts against the locking pin, and the other end abuts against the cover.

[0007] In a preferred embodiment, the locking pin end is also connected to a pull rod, which passes through the cover. The insertion rod has at least two stop holes along its length. The end of the stretcher is provided with a guide sleeve, which is slidably sleeved with the insertion rod. The side wall of the guide sleeve is provided with a through hole and a removable pin, which passes through the guide sleeve and is inserted into the stop hole.

[0008] In the preferred embodiment, the positioning seat has a countersunk hole, the countersunk hole has a second spring, one end of the second spring has a buffer plate, and the end of the insertion rod abuts against the buffer plate.

[0009] In the preferred embodiment, an anti-collision bar is also provided between the pull rod and the insertion rod, and the anti-collision bar is threadedly connected to the positioning seat.

[0010] The beneficial effects of this utility model are as follows: the use of a plug rod and a guide positioning seat can help medical staff quickly align the patient's head on the stretcher with the scanning axis of the CT machine, and the use of a locking mechanism can automatically fix the stretcher, avoiding uneven density or artifacts on both sides of the image due to the head deviating from the scanning center or the stretcher moving during the scanning process; the use of a buffer plate reduces the speed of the stretcher when it is inserted into the positioning seat, reducing the impact on the stretcher or the patient. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a side view of an ambulance.

[0013] Figure 2 This is a detailed schematic diagram of the vibration damping chassis.

[0014] Figure 3 This is a schematic diagram of the end of the portal frame support.

[0015] Figure 4 This is an enlarged view of the docking and positioning device.

[0016] Figure 5 This is a cross-sectional view of the docking and positioning device.

[0017] Figure 6 This is an exploded view of the docking and positioning device.

[0018] Figure 7 This is a cross-sectional view of a tension spring type floating control panel.

[0019] Figure 8 This is a top view of a spring-loaded floating control panel.

[0020] Figure 9 This is a sectional view of a rocker arm type floating control panel.

[0021] Figure 10 This is a schematic diagram of the lead screw buffer connection structure.

[0022] In the diagram: Vehicle body 1; Vibration damping underframe 2; Bottom load-bearing plate 201; First vibration damping plate 202; Surface horizontal plate 203; Damping vibration damper 204; Side upright 3; Load-bearing upright plate 301; Second vibration damping plate 302; Surface upright plate 303; Stretcher 4; Brain CT equipment 5; Radiation shield 6; Portal support frame 7; Operating platform 8; Connecting frame 801; Buffer platform 802; Vertical frame 803; Tension spring 804; First ball joint seat 805; Second ball joint seat 806; Damping rod 807; Sleeve 808; Rod cavity 809; Guide rod 810; Guide seat 811; Third spring 812; Hanging rod 813; Friction sleeve 814; Third ball joint seat 815; Fourth spring 816; Counterweight pendulum 817; Docking and positioning device 9; Insert rod 901; Positioning seat 9 02; Guide cone 903; Positioning stop 904; Positioning hole 905; Locking hole 906; Locking pin 907; Guide slope 908; Side hole 909; First spring 910; Cover 911; Pull rod 912; Guide sleeve 913; Pin 914; Stop hole 915; Buffer plate 916; Second spring 917; Countersunk hole 918; Anti-collision bar 919; Bottom plug 920; Anti-rotation protrusion 921; Linear guide groove 922; Linear module 10; Fixed base plate 1001; Moving platform 1002; Guide rail assembly 1003; Lead screw 1004; Drive motor 1005; Nut 1006; Connecting seat 1007; Retaining ring 1008; Fifth spring 1009; First acceleration sensor 11; Second acceleration sensor 12. Detailed Implementation

[0023] Example 1: like Figure 1-8 A mobile CT ambulance stretcher stable docking and positioning structure includes a vehicle body 1, a vibration damping base frame 2 on the vehicle body 1, a side frame 3 at one end of the vibration damping base frame 2, a brain CT device 5 on the side frame 3, a stretcher trolley 4 on the vibration damping base frame 2, a docking and positioning device 9 between one end of the stretcher trolley 4 and the side frame 3, the docking and positioning device 9 includes an insertion rod 901 at the end of the stretcher trolley 4 and a positioning seat 902 on the side frame 3, a positioning stop 904 on the outer wall of the middle part of the insertion rod 901, a positioning hole 905 and a guide cone 903 in the positioning seat 902, the insertion rod 901 is inserted into the positioning hole 905 so that the positioning stop 904 stops on the guide cone 903, a locking hole 906 at the front end of the insertion rod 901, and a retractable locking pin 907 on the side wall of the positioning seat 902, the locking pin 907 being inserted into the locking hole 906.

[0024] A plug bar 901 is provided on each side of the end of the stretcher 4, and two positioning seats 902 are provided on the side frame 3 to firmly connect the end of the stretcher 4 to the side frame 3.

[0025] After receiving the patient, the medical staff will transfer the stretcher 4 to the vibration damping frame 2 and push the insertion rod 901 to the positioning seat 902. Under the guidance of the guide cone 903, the front end of the insertion rod 901 will automatically enter the positioning hole 905 until the positioning stop 904 abuts against the guide cone 903 to complete the positioning. Then, the locking pin 907 will be inserted into the locking hole 906 to complete the locking.

[0026] In the preferred embodiment, the locking pin 907 is provided with a guide slope 908, the side wall of the positioning seat 902 is provided with a side hole 909, a first spring 910 is provided in the side hole 909, and a cover 911 is provided at the end of the side hole 909. One end of the first spring 910 abuts against the locking pin 907, and the other end abuts against the cover 911.

[0027] The end of the insertion rod 901 is rounded or chamfered. When the insertion rod 901 is inserted, it presses against the guide slope 908 of the locking pin 907, lifting the locking pin 907. The locking pin 907 compresses the first spring 910, allowing the insertion rod 901 to be inserted smoothly. When the locking hole 906 is aligned with the locking pin 907, the locking pin 907 is inserted into the locking hole 906 under the action of the spring force.

[0028] The upper end of the locking pin 907 is provided with an anti-rotation protrusion 921, and the side wall of the side hole 909 is provided with a linear guide groove 922. The anti-rotation protrusion 921 is inserted into the linear guide groove 922 to prevent the locking pin 907 from rotating.

[0029] In a preferred embodiment, the locking pin 907 is further connected to a pull rod 912, which passes through the cover 911. The insertion rod 901 has at least two stop holes 915 along its length. The end of the stretcher 4 is provided with a guide sleeve 913, which is slidably sleeved with the insertion rod 901. The side wall of the guide sleeve 913 is provided with a through hole and a removable pin 914, which passes through the guide sleeve 913 and is inserted into the stop hole 915.

[0030] The pin 914 is equipped with a pull ring structure and is connected to the stretcher 4 via a hanging rope to prevent loss.

[0031] When it is necessary to unlock the plug 901, pull out the pin 914, then pull the pull rod 912 to pull out the locking pin 907 from the locking hole 906, retract the plug 901 to the other stop hole 915 to align with the side wall through hole of the guide sleeve 913, and insert the pin 914 back in.

[0032] In a preferred embodiment, the positioning seat 902 has a countersunk hole 918, the countersunk hole 918 has a second spring 917, one end of the second spring 917 has a buffer plate 916, and the end of the insertion rod 901 abuts against the buffer plate 916.

[0033] When the insertion rod 901 is inserted, it collides with the buffer plate 916 and is decelerated by the action of the second spring 917, forming a buffer and reducing the impact force.

[0034] The bottom end of the countersunk hole 918 is provided with a bottom plug 920 to stop the second spring 917.

[0035] In a preferred embodiment, an anti-collision rod 919 is provided between the pull rod 912 and the insertion rod 901, and the anti-collision rod 919 is threadedly connected to the positioning seat 902.

[0036] The anti-collision bar 919 is located at the front end of the positioning seat 902 to prevent the insertion rod 901 from accidentally hitting the pull rod 912 because it is not aligned with the positioning seat 902.

[0037] The vehicle body 1 has an operating platform 8 inside the carriage. The operating platform 8 includes a connecting frame 801 connected to the vehicle body 1, and a buffer plate 802 is provided on the connecting frame 801.

[0038] Since medical staff need to perform medication preparation on the operating table 8 while the vehicle is in motion, the buffer plate 802 needs to have a certain anti-bump function to prevent the medicine bottles on the table from tipping over.

[0039] The upper end of the connecting frame 801 is provided with an annular upright frame 803. Multiple tension springs 804 are connected between the upright frame 803 and the outer end of the buffer plate 802. The lower end of the connecting frame 801 is provided with a cavity. The lower center of the buffer plate 802 is provided with a first ball joint seat 805. The lower end of the first ball joint seat 805 is provided with a damping rod 807. The lower end of the connecting frame 801 is provided with a second ball joint seat 806. The upper end of the second ball joint seat 806 is provided with a sleeve 808. The sleeve 808 is provided with a rod cavity 809. The damping rod 807 is slidably sleeved with the rod cavity 809.

[0040] The buffer plate 802 is suspended in the center of the upright frame 803 under the action of the outer tension springs 804. When the vehicle bounces up and down, the buffer plate 802 will lag behind the connecting frame 801 due to inertia. The damping rod 807 and the sleeve 808 will be relatively displaced. The friction between the outer wall of the damping rod 807 and the inner cavity of the rod cavity 809 will reduce the energy and reduce the sway amplitude of the buffer plate 802.

[0041] When the vehicle is at a horizontal deflection angle, the structure of the two universal ball joint seats and the telescopic sleeve allows the buffer platform 802 to have an angle relative to the connecting frame 801, thus reducing horizontal sway to a certain extent.

[0042] The second ball joint seat 806 is provided with guide rods 810 at both the front and rear ends of the vehicle movement. The cavity side wall at the lower end of the connecting frame 801 is provided with a guide seat 811. Each guide rod 810 is slidably sleeved with the guide seat 811. A third spring 812 is sleeved on the outside of each guide rod 810. One end of the third spring 812 abuts against the second ball joint seat 806, and the other end of the third spring 812 abuts against the inner wall of the cavity of the connecting frame 801.

[0043] The vibration damping base frame 2 includes a bottom load-bearing plate 201. The lower end of the bottom load-bearing plate 201 is provided with multiple damping shock absorbers 204 connected to the vehicle frame. The upper surface of the bottom load-bearing plate 201 is provided with a first damping plate 202. The upper surface of the first damping plate 202 is provided with a surface horizontal plate 203. The side frame 3 includes a load-bearing vertical plate 301. The load-bearing vertical plates 301 are connected to each other. The side of the second damping plate 302 near the carriage is provided with a second damping plate 302 and a surface vertical plate 303 in sequence. The surface vertical plate 303 is connected to the brain CT equipment 5.

[0044] The damping shock absorber 204 can be selected from standard parts available on the market, and plays a role in vibration isolation. The first damping plate 202 and the second damping plate 302 are made of rubber or other vibration-absorbing materials.

[0045] The ambulance walls are made of radiation shielding panels. After the ambulance arrives at the location, the patient is admitted. The CT equipment can be powered from the nearest residential area or municipal facility. The driver and medical staff get off the vehicle and wait for the CT equipment to finish operating.

[0046] The carriage is also equipped with a portal support frame 7, with a traveling wheel at the lower end of the portal support frame 7. A radiation shield 6 is connected between the portal support frame 7 and the side support frame 3. A radiation shield curtain that can be pulled up and down is provided at one end of the opening of the portal support frame 7.

[0047] The radiation shield 6 has a pleated structure and can be folded and stored near the side support 3. In case of emergency, if a CT scan needs to be performed while the vehicle is moving, the gantry support 7 is pulled to unfold the radiation shield 6, covering the entire stretcher 4, and the shielding curtain at the end is pulled down. The driver and medical staff must wear radiation protection clothing before the CT scan can be performed. At this time, the CT equipment is powered by the vehicle's dedicated backup power supply.

[0048] Example 2: like Figure 1 , 4 In sections -6 and 9-10, a mobile CT ambulance is described. This CT ambulance consists of a driver's cab and a passenger compartment. The passenger compartment integrates basic emergency medical equipment such as a defibrillator, ventilator, cardiopulmonary resuscitation device, electrocardiograph, oxygen cylinder, biochemical analyzer, and blood cell analyzer, and is equipped with ventilation and lighting systems. In addition to the control system, the vehicle also integrates battery, communication, positioning, and navigation systems.

[0049] Because vehicles frequently start, stop, and brake, a buffer structure is set up in the direction of movement. When the vehicle accelerates or decelerates, the second ball joint seat 806, the first ball joint seat 805, and the buffer platform 802 can be moved as a whole a certain distance relative to the connecting frame 801 to form a buffer time and prevent objects on the platform from tipping over.

[0050] In the preferred embodiment, a suspension rod 813 is provided at the center of the lower end of the buffer platform 802, a friction sleeve 814 is fitted on the outer wall of the suspension rod 813, the connecting frame 801 is provided with a cavity, a third ball joint seat 815 is provided at the upper end of the cavity, the third ball joint seat 815 is slidably sleeved with the friction sleeve 814, a counterweight pendulum 817 is provided at the lower end of the suspension rod 813, and a fourth spring 816 is provided between the connecting frame 801 and the buffer platform 802.

[0051] The buffer platform 802, the suspension rod 813 and the counterweight pendulum 817 swing together, and its center of gravity is biased towards the counterweight pendulum 817. Therefore, when the vehicle goes up or down a slope, even if the connecting frame 801 is tilted relative to the horizontal plane, the buffer platform 802 can remain horizontal under the action of the counterweight pendulum 817.

[0052] When the vehicle bounces up and down, the buffer plate 802 can move up and down under the action of the fourth spring 816, and the energy is reduced by the friction between the friction sleeve 814 and the third ball joint seat 815.

[0053] In a preferred embodiment, a linear module 10 is also provided. The linear module 10 includes a fixed base plate 1001, a first acceleration sensor 11 is provided on the fixed base plate 1001, a second acceleration sensor 12 is provided on the vehicle body 1, a movable platform 1002 that can move in the vehicle's direction of movement is provided on the fixed base plate 1001, a guide rail assembly 1003 is provided between the movable platform 1002 and the fixed base plate 1001, a lead screw 1004 is also provided, a drive motor 1005 is provided at the end of the lead screw 1004, a nut 1006 is sleeved on the lead screw 1004, retaining rings 1008 are provided at both ends of the nut 1006, a connecting seat 1007 is provided at the lower end of the movable platform 1002, the connecting seat 1007 is sleeved in the middle of the nut 1006, and a fifth spring 1009 is provided on both sides of the connecting seat 1007, the fifth spring 1009 abuts against the nut 1006.

[0054] The second acceleration sensor 12 is installed near the control panel 8. When the vehicle accelerates, the drive motor 1005 drives the connecting frame 801 to move towards the rear of the vehicle. When the vehicle decelerates, the drive motor 1005 drives the connecting frame 801 to move towards the front of the vehicle, thus playing an active buffering role.

[0055] Due to the presence of the fifth spring 1009, during the acceleration and deceleration of the vehicle and the execution of the drive motor 1005, the connecting frame 801 can maintain inertial movement for a short distance, thus playing a passive buffering role.

[0056] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A stable docking and positioning structure for a mobile CT ambulance stretcher, characterized in that: The system includes a vibration damping underframe (2) mounted on the vehicle body (1) frame. The vibration damping underframe (2) includes a side support frame (3) mounted at one end. The side support frame (3) is used to mount a brain CT device (5). A stretcher cart (4) is mounted on the vibration damping underframe (2). A docking positioning device (9) is provided between one end of the stretcher cart (4) and the side support frame (3). The docking positioning device (9) includes a plug rod (901) mounted at the end of the stretcher cart (4) and a positioning seat (902) mounted on the side support frame (3). The middle outer wall of the insertion rod (901) is provided with a positioning stop (904). The positioning seat (902) includes a positioning hole (905) and a guide cone (903). The insertion rod (901) is inserted into the positioning hole (905) so that the positioning stop (904) stops on the guide cone (903). The front end of the insertion rod (901) is provided with a locking hole (906). The side wall of the positioning seat (902) is provided with a retractable locking pin (907). The locking pin (907) is inserted into the locking hole (906).

2. The mobile CT ambulance stretcher stable docking and positioning structure according to claim 1, characterized in that: The locking pin (907) is provided with a guide slope (908), the side wall of the positioning seat (902) is provided with a side hole (909), a first spring (910) is provided in the side hole (909), and a cover (911) is provided at the end of the side hole (909). One end of the first spring (910) abuts against the locking pin (907), and the other end abuts against the cover (911).

3. The mobile CT ambulance stretcher stable docking and positioning structure according to claim 2, characterized in that: The locking pin (907) is also connected to a pull rod (912), which passes through the cover (911). The insertion rod (901) has at least two stop holes (915) along its length. The end of the stretcher (4) is provided with a guide sleeve (913), which is slidably sleeved with the insertion rod (901). The side wall of the guide sleeve (913) is provided with a through hole and a pluggable pin (914). The pin (914) passes through the guide sleeve (913) and is inserted into the stop hole (915).

4. The mobile CT ambulance stretcher stable docking and positioning structure according to claim 1, characterized in that: The positioning seat (902) has a countersunk hole (918) inside, and the countersunk hole (918) has a second spring (917) inside. One end of the second spring (917) has a buffer plate (916), and the end of the insertion rod (901) abuts against the buffer plate (916).

5. The mobile CT ambulance stretcher stable docking and positioning structure according to claim 3, characterized in that: A bumper (919) is also provided between the pull rod (912) and the insertion rod (901), and the bumper (919) is threadedly connected to the positioning seat (902).

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