CN118161374A - Arm fixing device for interventional therapy of department of cardiology - Google Patents

Abstract

The invention relates to the technical field of arm fixing devices and discloses an arm fixing device for interventional therapy of a cardiology department, which comprises a bottom plate, wherein an installation component is arranged at the bottom of the bottom plate, a first supporting plate is arranged on the top surface of the bottom plate, a second supporting plate is arranged on the top surface of the first supporting plate, a first fixing pad is arranged on the top surface of the first supporting plate, a first fixing frame is arranged on the top surface of the first fixing pad, a first fixing belt is arranged on the outer wall of the first fixing frame, a second fixing pad is arranged on the top surface of the second supporting plate, a second fixing frame is arranged on the top surface of the second fixing pad, and a second fixing belt is arranged on the outer wall of the second fixing frame. According to the arm fixing device for the intracardiac interventional therapy, a doctor is allowed to rotate the arm of a patient, so that the doctor can conveniently operate the left hand of the patient from the right side of the patient without adjusting the position of the doctor standing or the arm, the operation burden of the doctor is reduced, and inconvenience and time waste in the operation process are reduced.

Description

An arm fixation device for interventional treatment in cardiology

Technical Field

The present invention relates to the technical field of arm fixing devices, and in particular to an arm fixing device for interventional treatment in cardiology.

Background technique

In interventional cardiology, especially in surgery performed through the radial artery, the positioning and fixation of the arm are crucial to the success of the surgery. Radial artery intervention is a commonly used method for diagnosing and treating heart disease. This surgical method enters the vascular system through the patient's radial artery and then operates catheters and other instruments for treatment or examination. This requires the patient's arm to remain in a specific and stable position throughout the operation. At this time, an arm fixation device is required.

Sometimes, based on the patient's vascular anatomy, the radial artery in the left hand may be a more appropriate choice. For example, some patients have problems such as tortuous, narrowed or thrombotic blood vessels. The doctor may choose the left hand as a better puncture point based on the condition of the blood vessels and the use of angiography and other methods. Or if the patient's right hand (such as the commonly used radial artery) cannot be used, such as due to injury, vascular disease, malformation, or a vascular trajectory that is not suitable for puncture, the doctor will choose to perform surgery through the radial artery in the left hand.

Since the layout of medical equipment and instruments in the interventional treatment room of the cardiology department is pre-designed, the doctor can usually stand on the right side of the patient to conveniently operate the equipment, observe the images on the monitor, and perform necessary operations, such as injecting contrast agents, operating catheters, etc. However, traditional arm fixation devices usually lack flexibility and cannot allow doctors to adjust the patient's arm position according to the needs during the operation. This makes it inconvenient for the doctor to stand on the right side of the patient to perform interventional treatment on the patient's left radial artery, which makes the arm fixation device have certain limitations when used.

For example, the Chinese patent with publication number CN115869080A discloses an arm fixation device for interventional treatment in cardiology, including a support plate, on which is mounted a first limiting component for limiting the patient's limb, the first limiting component comprising a plurality of fixing seats fixedly mounted on the support plate, and a plurality of sliding seats matched with the number of the fixing seats are mounted on the support plate.

The prior art has the following defects:

The above-mentioned existing technologies can only provide basic fixation functions to ensure that the patient's arm will not move randomly during the operation, but may not allow the doctor to easily adjust the position of the patient's arm during the operation, which may make some special operations difficult and affect the progress and effectiveness of the operation.

Summary of the invention

In view of the problem that the existing technology cannot allow doctors to adjust the patient's arm position according to the needs during the operation, making it inconvenient for doctors to stand on the right side of the patient to perform interventional treatment on the patient's left radial artery, which makes the arm fixation device have certain limitations when used, an arm fixation device for interventional treatment in cardiology is proposed.

The present application provides an arm fixation device for interventional treatment in cardiology, the purpose of which is to improve the operational flexibility and accuracy of radial artery surgery in interventional treatment. By allowing the doctor to rotate the patient's arm, the doctor can conveniently operate the patient's left hand from the patient's right side without adjusting the position of his or her standing position or arm, thereby reducing the doctor's operational burden and reducing the inconvenience and time waste during the operation.

The technical solution of the present invention is: an arm fixing device for interventional treatment in cardiology, comprising a base plate, a mounting assembly is arranged at the bottom of the base plate, a first support plate is arranged on the top surface of the base plate, a second support plate is arranged on the top surface of the first support plate, a first fixing pad is arranged on the top surface of the first support plate, a first fixing frame is arranged on the top surface of the first fixing pad, a first fixing belt is arranged on the outer wall of the first fixing frame, and two first fixing frames are arranged, one end of the first fixing belt is sleeved on the outer wall of one of the first fixing frames, and the other end of the first fixing belt passes through the outer wall of another first fixing frame, a second fixing pad is arranged on the top surface of the second support plate, a second fixing frame is arranged on the top surface of the second fixing pad, a second fixing belt is arranged on the outer wall of the second fixing frame, and two second fixing frames are arranged, one end of the second fixing belt is sleeved on the outer wall of one of the second fixing frames, and the other end of the second fixing belt passes through the outer wall of another second fixing frame; a limiting assembly is arranged on the top of the base plate, and a pull plate is arranged on the bottom surface of the second support plate.

Furthermore, the limiting assembly includes a first mounting groove opened on the top surface of the base plate, a first limiting ball arranged inside the first mounting groove, a first limiting ring arranged on the inner wall of the first mounting groove, and a first limiting groove opened on the bottom surface of the first support plate. The limiting assembly also includes a second mounting groove opened on the top surface of the first support plate, a second limiting ball arranged inside the second mounting groove, a second limiting ring arranged on the inner wall of the second mounting groove, and a second limiting groove opened on the bottom surface of the second support plate.

Furthermore, the limiting assembly also includes a second elastic member disposed inside the first installation groove, and a third elastic member disposed inside the second installation groove.

Furthermore, the installation assembly includes a slide rail arranged at the bottom of the base plate, a sliding base arranged at the bottom surface of the base plate, a mounting bracket arranged at the bottom of the slide rail, a fixed plate arranged on the outer wall of the mounting bracket, a first threaded rod arranged on the outer wall of the fixed plate, and a first anti-sliding plate arranged at the top end of the first threaded rod, and the sliding base slides inside the slide rail, two fixed plates are arranged, the number of the first threaded rods is the same as that of the fixed plates, and the number of the first anti-sliding plates is the same as that of the fixed plates.

Furthermore, the installation assembly also includes a positioning groove opened on the side of the sliding base, a positioning rod arranged inside the positioning groove, a first positioning hole opened on the side of the sliding rail, a second positioning hole opened on the side of the sliding rail, and a first elastic member arranged inside the positioning groove, and one end of the first elastic member is fixedly connected to the inner wall of the positioning groove, and the other end of the first elastic member is fixedly connected to the outer wall of the positioning rod.

Furthermore, two mounting components are provided, wherein the outer wall of the mounting bracket in one mounting component is provided with a second threaded rod, and the outer wall of the mounting bracket in the other mounting component is provided with a guide plate.

Furthermore, in one of the mounting components, a worm gear is provided on the outer wall of the mounting bracket, and the inner wall of the worm gear is threadedly connected to the outer wall of the second threaded rod; in one of the mounting components, a mounting box is provided on the outer wall of the mounting bracket, a worm is provided on the inner wall of the mounting box, and the outer wall of the worm gear cooperates with the outer wall of the worm wheel; a driving motor is provided on the outer wall of the mounting box, and the output shaft of the driving motor is fixedly connected to the axial end of the worm.

Furthermore, a hand rest is arranged on the top surface of the second fixed pad, an elastic band is arranged on the top surface of the second fixed pad, and an adjustment component is arranged on the side surface of the second fixed pad.

Furthermore, the adjustment assembly includes a first fixed seat arranged on the side wall of the second fixed pad, a ventilation pipe arranged on the inner wall of the first fixed seat and interconnected with the interior of the armrest, a piston rod arranged inside the ventilation pipe, a sliding seat arranged at one end of the piston rod away from the ventilation pipe, a second fixed seat arranged on the side wall of the first support plate, and a guide rod arranged on the outer wall of the second fixed seat, and the sliding seat slides on the rod wall of the guide rod.

Furthermore, the adjustment assembly also includes a control block arranged on the bottom surface of the sliding seat, a push-pull rod arranged inside the control block, a rubber pad arranged on the top of the push-pull rod, and a fourth elastic member arranged on the outer wall of the push-pull rod, and one end of the fourth elastic member is fixedly connected to the bottom surface of the rubber pad, and the other end of the fourth elastic member is fixedly connected to the top surface of the control block.

Beneficial effects of the present invention:

1. The mounting bracket is placed against the treatment bed, and then the first threaded rod is rotated so that the top surface of the first anti-sliding block is in close contact with the bottom surface of the treatment bed, so that the mounting bracket and the base plate can be fixed on the treatment bed, and the patient's arm can be fixed by the first fixing belt and the second fixing belt by placing the patient's arm on the first fixing pad and the second fixing pad.

2. By controlling the output shaft of the driving motor to rotate, the worm can be driven to rotate, the worm drives the worm wheel to rotate, and the rotation of the worm wheel drives the second threaded rod to rise or fall, providing power for the height adjustment of the base plate, which is convenient for patients with different degrees of fatness and thinness, so that the second support plate can be rotated above the patient's abdomen.

3. When it is necessary to adjust the position of the sliding base inside the slide rail, the medical staff presses the positioning rod to retract the end of the positioning rod into the positioning groove, and then the bottom plate can be freely slid, which is convenient for adjusting the position of the patient's arm according to the position where the patient lies.

4. When the doctor stands on the right side of the patient to puncture the radial artery on the patient's left hand, the medical staff can rotate the second support plate by pulling the plate with their fingertips to rotate the patient's left forearm to above the patient's abdomen. After the puncture is successful, the medical staff can then rotate the first support plate and the second support plate to pull the patient's left forearm toward the medical staff, making it convenient for the medical staff to subsequently insert the catheter. The device can flexibly rotate the patient's arm, allowing the doctor to conveniently operate the patient's left hand from the right side of the patient without adjusting the position of his or her standing or arm, thereby reducing the doctor's operating burden and reducing the inconvenience and time waste during the operation.

5. Through the cooperation between the first limiting ball and the first limiting groove, the friction force when the first support plate rotates can be increased to avoid accidental rotation of the first support plate. Through the cooperation between the second limiting ball and the second limiting groove, the friction force when the second support plate rotates can be increased to avoid accidental rotation of the second support plate, thereby improving the stability and safety of the device during use.

6. When the height of the hand rest needs to be adjusted, the medical staff presses the push-pull rod downward to separate the rubber pad from the bottom surface of the second support plate, and then the medical staff can pull the push-pull rod to slide freely along the direction of the ventilation tube, so as to suck out the air inside the hand rest, or squeeze the control inside the ventilation tube into the inside of the hand rest, so as to achieve the purpose of adjusting the height of the hand rest. Therefore, it can be suitable for all kinds of people. Not only can the height of the hand rest be adjusted, but the position of the patient's arm can be adjusted according to the individual needs of the patient, thereby improving the patient's comfort and reducing the fatigue or discomfort caused by long-term fixation of the arm. It also allows medical staff to quickly adjust the height of the hand rest according to the specific circumstances of the operation and the location requirements of the intervention point to ensure the best operating angle and position, and improve the accuracy and efficiency of the operation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the installation of the installation assembly in the present invention;

Fig. 2 is a perspective view of the present invention;

FIG3 is a cross-sectional view of a slider in the present invention;

FIG4 is a schematic diagram of the installation of the worm in the present invention;

FIG5 is a schematic diagram of the installation of the first support plate in the present invention;

FIG6 is a perspective view of the first support plate of the present invention;

FIG7 is a schematic diagram of the installation of the first limiting groove in the present invention;

FIG8 is a cross-sectional view of a bottom plate of the present invention;

FIG9 is a cross-sectional view of the first support plate of the present invention;

FIG10 is a schematic diagram of the installation of the adjustment assembly in the present invention;

FIG11 is a schematic diagram of the installation of the elastic band of the present invention;

FIG12 is a schematic diagram of the installation of the rubber pad in the present invention;

FIG. 13 is a cross-sectional view of the control block of the present invention.

In the figure:

1. Bottom plate; 2. Mounting assembly; 3. Mounting bracket; 4. Fixing plate; 5. First threaded rod; 6. First anti-sliding block; 7. Second threaded rod; 8. Slide rail; 9. Sliding base; 10. Positioning groove; 11. Positioning rod; 12. First elastic member; 13. First positioning hole; 14. Second positioning hole; 15. Worm gear; 16. Mounting box; 17. Worm; 18. Driving motor; 19. First support plate; 20. Second support plate; 21. Limiting assembly; 22. First mounting groove; 23. First limiting ball; 24. First limiting ring; 25. Second elastic member; 26. First limiting groove; 27. Second installation groove; 28, second limiting ball; 29, second limiting ring; 30, third elastic member; 31, second limiting groove; 32, pull plate; 33, first fixed pad; 34, second fixed pad; 35, first fixed frame; 36, first fixed belt; 37, second fixed frame; 38, second fixed belt; 39, hand rest; 40, elastic belt; 41, adjustment component; 42, first fixed seat; 43, vent pipe; 44, piston rod; 45, sliding seat; 46, second fixed seat; 47, guide rod; 48, control block; 49, push-pull rod; 50, rubber pad; 51, fourth elastic member; 52, guide plate.

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

Embodiment 1, referring to FIGS. 5-9, is the first embodiment of the present invention, which provides an arm fixing device for interventional treatment in cardiology, including a base plate 1, a mounting assembly 2 is provided at the bottom of the base plate 1, a first support plate 19 is rotatably mounted on the top surface of the base plate 1, a second support plate 20 is rotatably mounted on the top surface of the first support plate 19, a first fixing pad 33 is fixedly mounted on the top surface of the first support plate 19, a first fixing frame 35 is fixedly mounted on the top surface of the first fixing pad 33, a first fixing belt 36 is provided on the outer wall of the first fixing frame 35, and two first fixing frames 35 are provided, one end of the first fixing belt 36 is sleeved on one of the first fixing belts 36, and the first fixing belt 36 is sleeved on the first fixing belt 36. The outer wall of the fixed frame 35, the other end of the first fixing belt 36 passes through the outer wall of another first fixed frame 35, the second fixing pad 34 is fixedly installed on the top surface of the second support plate 20, and the second fixing frame 37 is fixedly installed on the top surface of the second fixing pad 34. The outer wall of the second fixed frame 37 is provided with a second fixing belt 38, and there are two second fixed frames 37, one end of the second fixing belt 38 is sleeved on the outer wall of one of the second fixing frames 37, and the other end of the second fixing belt 38 passes through the outer wall of another second fixing frame 37, a limiting component 21 is provided on the top of the bottom plate 1, and a pull plate 32 is fixedly installed on the bottom surface of the second support plate 20.

Specifically, the first fixing strap 36 and the second fixing strap 38 can be the common Velcro straps in the prior art. The outer wall of the pull plate 32 is provided with a through groove for the fingertips to pass through, so that the medical staff can pull the second support plate 20 and the first support plate 19 conveniently. The first fixing pad 33 and the second fixing pad 34 are used to place the patient's arms to improve the patient's comfort. Through the set installation component 2, the base plate 1 can be installed on the treatment bed or the operating bed, wherein the installation component 2 can be a bolt commonly used in the prior art.

After arriving at the operating room, the patient is placed on the X-ray fluoroscopy table. The surgical site is usually the front of the patient's wrist. First, the patient's arm is placed on the first fixing pad 33 and the second fixing pad 34. The patient's arm can be fixed by the first fixing belt 36 and the second fixing belt 38. When the doctor stands on the right side of the patient to puncture the radial artery of the patient's left hand, the medical staff's fingertips can rotate the second support plate 20 through the pull plate 32 to rotate the patient's left forearm to the upper part of the patient's abdomen. After rotating the patient's left forearm to the upper part of the patient's abdomen through the second support plate 20, the doctor will locally inject anesthetics at the puncture point of the left radial artery to reduce the patient's pain during the operation. After the anesthetic takes effect, the doctor will use a special fine needle to puncture the radial artery, which is usually performed under X-ray fluoroscopy to ensure the accuracy of the puncture. After the puncture is successful, the medical staff can then turn The first support plate 19 and the second support plate 20 are moved to pull the patient's left forearm toward the medical staff, so as to facilitate the subsequent insertion of the catheter by the medical staff. Subsequently, the doctor inserts a guide wire into the radial artery through the needle, and then pushes a thin cannula (catheter sheath) inward from the puncture site. The guide wire is then removed, and the catheter sheath provides a channel for a larger catheter to enter the body. Finally, a catheter is inserted into the catheter sheath and pushed along the radial artery catheter to the vicinity of the patient's heart. With the help of X-ray fluoroscopy and contrast agent, the doctor positions the catheter to a specific coronary artery opening. The limiting component 21 is provided to increase the friction between the second support plate 20 and the first support plate 19 to prevent the second support plate 20 from rotating accidentally. The friction between the first support plate 19 and the bottom plate 1 can also be increased to prevent the first support plate 19 from rotating accidentally, thereby improving the stability and safety of the device.

7-8, the limiting assembly 21 includes a first mounting groove 22 provided on the top surface of the bottom plate 1, a first limiting ball 23 elastically installed inside the first mounting groove 22, a first limiting ring 24 fixedly installed on the inner wall of the first mounting groove 22, and a first limiting groove 26 provided on the bottom surface of the first support plate 19. The limiting assembly 21 also includes a second mounting groove 27 provided on the top surface of the first support plate 19, a second limiting ball 28 elastically installed inside the second mounting groove 27, a second limiting ring 29 fixedly installed on the inner wall of the second mounting groove 27, and a second limiting groove 31 provided on the bottom surface of the second support plate 20.

Specifically, the first limiting ring 24 is used to limit the first limiting ball 23 to the inside of the first mounting groove 22, and the second limiting ring 29 is used to limit the second limiting ball 28 to the inside of the second mounting groove 27. There are multiple first limiting balls 23 and second limiting balls 28. Through the cooperation between the first limiting ball 23 and the first limiting groove 26, the friction force of the first support plate 19 during rotation can be increased, and through the cooperation between the second limiting ball 28 and the second limiting groove 31, the friction force of the second support plate 20 during rotation can be increased.

Referring to Figures 7 and 9, the limiting assembly 21 also includes a second elastic member 25 arranged inside the first mounting groove 22, and a third elastic member 30 arranged inside the second mounting groove 27, and one end of the second elastic member 25 is fixedly connected to the inner wall of the first mounting groove 22, the other end of the second elastic member 25 is fixedly connected to the outer wall of the first limiting ball 23, one end of the third elastic member 30 is fixedly connected to the inner wall of the second mounting groove 27, and the other end of the third elastic member 30 is fixedly connected to the outer wall of the second limiting ball 28.

Specifically, the second elastic member 25 and the third elastic member 30 may be compression springs or spring sheets commonly used in the prior art, and compression springs are preferred herein.

When the first support plate 19 rotates, the bottom surface of the first support plate 19 squeezes the first limiting ball 23, and then the first limiting ball 23 squeezes the second elastic member 25, so that the second elastic member 25 stores elastic potential energy. When the first support plate 19 rotates to a suitable angle, the second elastic member 25 drives the first limiting ball 23 to reset, and multiple first limiting balls 23 engage with multiple first limiting grooves 26 to limit the angle of the first support plate 19 to prevent the first support plate 19 from rotating accidentally. Similarly, when the second support plate 20 rotates to a suitable angle, the third elastic member 30 drives the second limiting ball 28 to reset, and multiple second limiting balls 28 engage with multiple second limiting grooves 31 to limit the angle of the second support plate 20 to prevent the second support plate 20 from rotating accidentally.

Embodiment 2, referring to Figures 1-4, is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the mounting assembly 2 includes a slide rail 8 arranged at the bottom of the base plate 1, a sliding base 9 fixedly mounted on the bottom surface of the base plate 1, a mounting bracket 3 arranged at the bottom of the slide rail 8, a fixed plate 4 fixedly mounted on the outer wall of the mounting bracket 3, a first threaded rod 5 connected to the outer wall of the fixed plate 4 by internal and external threads, and a first anti-sliding block 6 fixedly mounted on the top of the first threaded rod 5, and the sliding base 9 slides inside the slide rail 8, two fixed plates 4 are provided, the number of the first threaded rods 5 is the same as that of the fixed plates 4, and the number of the first anti-sliding blocks 6 is the same as that of the fixed plates 4.

Specifically, by placing the mounting bracket 3 against the treatment bed and then rotating the first threaded rod 5 so that the top surface of the first anti-sliding plate 6 is in close contact with the bottom surface of the treatment bed, the mounting bracket 3 and the base plate 1 can be fixed on the treatment bed. By providing two fixing plates 4, which are respectively located on both sides of the mounting bracket 3, the mounting bracket 3 can be flexibly fixed to the left or right side of the patient, so that the left arm or right arm of the patient can be flexibly fixed, thereby improving the applicability and convenience of the device. Through the cooperation between the sliding base 9 and the slide rail 8, the base plate 1 can be freely moved along the direction of the slide rail 8, which makes it more convenient to adjust the position of the patient's arm according to the position where the patient lies, further improving the convenience of using the device.

Referring to Figure 3, the installation assembly 2 also includes a positioning groove 10 opened on the side of the sliding base 9, a positioning rod 11 elastically installed inside the positioning groove 10, a first positioning hole 13 opened on the side of the slide rail 8, a second positioning hole 14 opened on the side of the slide rail 8, and a first elastic member 12 arranged inside the positioning groove 10, and one end of the first elastic member 12 is fixedly connected to the inner wall of the positioning groove 10, and the other end of the first elastic member 12 is fixedly connected to the outer wall of the positioning rod 11.

Specifically, the first elastic member 12 can be a compression spring or spring sheet commonly used in the prior art, preferably a compression spring here. When it is necessary to adjust the position of the sliding base 9 inside the slide rail 8, the medical staff presses the positioning rod 11 to retract the end of the positioning rod 11 into the interior of the positioning groove 10, and then the base plate 1 can be freely slid, so as to adjust the position of the patient's arm according to the position where the patient lies down. Among them, a plurality of first positioning holes 13 and second positioning holes 14 can be provided, which can improve the accuracy of the position adjustment of the base plate 1, so that the positioning rod 11 is aligned with one of the first positioning holes 13 or one of the second positioning holes 14, and then the positioning rod 11 is no longer squeezed by the inner wall of the slide rail 8. Under the action of the elastic force of the first elastic member 12, the positioning rod 11 passes through one of the first positioning holes 13 or one of the second positioning holes 14 to fix the position of the base plate 1.

2 , two mounting assemblies 2 are provided, wherein a second threaded rod 7 is slidably mounted on an outer wall of a mounting bracket 3 in one mounting assembly 2 , and a guide plate 52 is slidably mounted on an outer wall of a mounting bracket 3 in another mounting assembly 2 .

Specifically, by cooperating between the guide plate 52 and the mounting bracket 3 in another mounting assembly 2, the sliding trajectory of the base plate 1 can be limited to ensure that the base plate 1 can be lifted and lowered in the vertical direction. By controlling the second threaded rod 7 to lift and lower, the base plate 1 can be driven to lift and lower.

2 and 4 , a worm wheel 15 is rotatably mounted on the outer wall of the mounting bracket 3 in one of the mounting components 2, and the inner wall of the worm wheel 15 is threadedly connected to the outer wall of the second threaded rod 7; a mounting box 16 is fixedly mounted on the outer wall of the mounting bracket 3 in one of the mounting components 2, a worm 17 is rotatably mounted on the inner wall of the mounting box 16, and the outer wall of the worm 17 cooperates with the outer wall of the worm wheel 15; a driving motor 18 is fixedly mounted on the outer wall of the mounting box 16, and the output shaft of the driving motor 18 is fixedly connected to the axial end of the worm 17.

Specifically, the drive motor 18 can be a common DC motor in the prior art, and can be connected to an external remote control and cooperate with the control system to control the forward and reverse rotation of the motor output shaft. Its specific model can be determined according to actual usage requirements, and no further details will be given here. It is convenient for medical staff to adjust the height of the base plate 1 when standing on the right side of the patient. By controlling the rotation of the output shaft of the drive motor 18, the worm 17 can be driven to rotate, and the worm 17 drives the worm wheel 15 to rotate. The rotation of the worm wheel 15 drives the second threaded rod 7 to rise or fall, providing power for the height adjustment of the base plate 1, which is convenient for patients with different degrees of fatness and thinness, so that the second support plate 20 can be rotated to above the patient's abdomen.

The remaining structures are the same as those of Example 1.

Embodiment 3, referring to Figures 10-13, is the third embodiment of the present invention. This embodiment is different from the second embodiment in that a hand rest 39 is fixedly connected to the top surface of the second fixed pad 34, an elastic band 40 is fixedly connected to the top surface of the second fixed pad 34, and an adjustment component 41 is provided on the side of the second fixed pad 34.

Specifically, during traditional interventional cardiology surgeries, a towel is usually placed under the patient's wrist, and then tape is used to fix the patient's fingertips to facilitate medical staff to puncture the radial artery. However, the method of placing a towel under the patient's wrist often cannot achieve stepless height adjustment and is difficult to apply to all types of people. Therefore, the device is provided with a hand rest 39, an elastic band 40 and an adjustment component 41, and the adjustment component 41 is used to adjust the height of the hand rest 39.

Referring to Figure 11, the adjustment assembly 41 includes a first fixed seat 42 fixedly mounted on the side wall of the second fixed pad 34, a ventilation pipe 43 fixedly mounted on the inner wall of the first fixed seat 42 and interconnected with the interior of the hand rest 39, a piston rod 44 slidably mounted inside the ventilation pipe 43, a sliding seat 45 fixedly mounted on the end of the piston rod 44 away from the ventilation pipe 43, a second fixed seat 46 fixedly mounted on the side wall of the first support plate 19, and a guide rod 47 fixedly mounted on the outer wall of the second fixed seat 46, and the sliding seat 45 slides on the rod wall of the guide rod 47.

Specifically, the outer wall of the piston rod 44 slides and fits with the inner wall of the ventilation pipe 43. By sliding the piston rod 44 inside the ventilation pipe 43, the air inside the hand rest 39 can be sucked out, or the air inside the ventilation pipe 43 can be squeezed into the hand rest 39, so as to achieve the purpose of adjusting the height of the hand rest 39. The first fixed seat 42 provides support for the ventilation pipe 43 to ensure the stability of the ventilation pipe 43 when working. There are two second fixed seats 46, which are respectively located at the two ends of the guide rod 47 to provide installation space for the guide rod 47. Through the setting of the guide rod 47, the stability of the piston rod 44 when sliding can be ensured.

12-13 , the adjustment assembly 41 also includes a control block 48 fixedly mounted on the bottom surface of the sliding seat 45, a push-pull rod 49 slidably mounted inside the control block 48, a rubber pad 50 fixedly mounted on the top of the push-pull rod 49, and a fourth elastic member 51 arranged on the outer wall of the push-pull rod 49, wherein one end of the fourth elastic member 51 is fixedly connected to the bottom surface of the rubber pad 50, and the other end of the fourth elastic member 51 is fixedly connected to the top surface of the control block 48.

Specifically, the fourth elastic member 51 is a compression spring or elastic plate commonly used in the prior art, and is preferably a compression spring.

The remaining structure is the same as that of Example 2.

Based on Example 1 to Example 3, the working principle of the present invention is as follows:

Once in the operating room, the patient is placed on an X-ray table and the surgery is usually done on the front of the patient's wrist.

Firstly, the mounting bracket 3 is pressed against the treatment bed, and then the first threaded rod 5 is rotated so that the top surface of the first anti-slip block 6 is in close contact with the bottom surface of the treatment bed, thereby fixing the mounting bracket 3 and the base plate 1 on the treatment bed.

By controlling the output shaft of the driving motor 18 to rotate, the worm 17 can be driven to rotate, and the worm 17 can drive the worm wheel 15 to rotate. The rotation of the worm wheel 15 drives the second threaded rod 7 to rise or fall, providing power for the height adjustment of the base plate 1, which is convenient for patients with different degrees of fatness and thinness, and enables the second support plate 20 to rotate above the patient's abdomen.

When it is necessary to adjust the position of the sliding base 9 inside the slide rail 8, the medical staff presses the positioning rod 11 to retract the end of the positioning rod 11 into the positioning groove 10, and then the base plate 1 can be freely slid, so as to adjust the position of the patient's arm according to the position where the patient lies down. Among them, a plurality of first positioning holes 13 and second positioning holes 14 can be provided, which can improve the accuracy of the position adjustment of the base plate 1, so that the positioning rod 11 is aligned with one of the first positioning holes 13 or one of the second positioning holes 14, and then the positioning rod 11 is no longer squeezed by the inner wall of the slide rail 8. Under the action of the elastic force of the first elastic member 12, the positioning rod 11 passes through one of the first positioning holes 13 or one of the second positioning holes 14 to fix the position of the base plate 1.

Then place the patient's arm on the first fixing pad 33 and the second fixing pad 34, so that the patient's wrist is close to the hand rest 39, and the patient's fingertips pass through the elastic band 40. Finally, the patient's arm can be fixed by the first fixing belt 36 and the second fixing belt 38, which is convenient for medical staff to puncture the radial artery.

When the doctor stands on the right side of the patient to puncture the left radial artery of the patient, the medical staff can rotate the second support plate 20 through the pull plate 32 with their fingertips, and rotate the patient's left forearm to above the patient's abdomen. After the patient's left forearm is rotated to above the patient's abdomen through the second support plate 20, the doctor will locally inject anesthetics at the puncture point of the left radial artery to relieve the patient's pain during the operation. After the anesthetic takes effect, the doctor will use a special fine needle to puncture the radial artery, usually under X-ray fluoroscopy to ensure the accuracy of the puncture. After the puncture is successful, the doctor will then The nurse can rotate the first support plate 19 and the second support plate 20 to pull the patient's left forearm toward the medical staff to facilitate the subsequent insertion of the catheter. Then, the doctor inserts a guide wire into the radial artery through the needle, and then pushes a thin cannula (catheter sheath) inward from the puncture site. The guide wire is then removed, and the catheter sheath provides a channel for a larger catheter to enter the body. Finally, the catheter is inserted into the catheter sheath and pushed along the radial artery catheter to the vicinity of the patient's heart. With the help of X-ray fluoroscopy and contrast agents, the doctor positions the catheter at a specific coronary artery opening.

When the first support plate 19 rotates, the bottom surface of the first support plate 19 squeezes the first limiting ball 23, and then the first limiting ball 23 squeezes the second elastic member 25, so that the second elastic member 25 stores elastic potential energy. When the first support plate 19 rotates to a suitable angle, the second elastic member 25 drives the first limiting ball 23 to reset, and multiple first limiting balls 23 engage with multiple first limiting grooves 26 to limit the angle of the first support plate 19 to prevent the first support plate 19 from rotating accidentally. Similarly, when the second support plate 20 rotates to a suitable angle, the third elastic member 30 drives the second limiting ball 28 to reset, and multiple second limiting balls 28 engage with multiple second limiting grooves 31 to limit the angle of the second support plate 20 to prevent the second support plate 20 from rotating accidentally.

When the height of the hand rest 39 needs to be adjusted, the medical staff presses the push-pull rod 49 downward to separate the rubber pad 50 from the bottom surface of the second support plate 20. The medical staff can then pull the push-pull rod 49 to slide freely along the direction of the ventilation tube 43, thereby sucking out the air inside the hand rest 39 or squeezing the air inside the ventilation tube 43 into the interior of the hand rest 39, thereby achieving the purpose of adjusting the height of the hand rest 39.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims (10)

1. Arm fixing device for intracardiac branch of academic or vocational study interventional therapy, including bottom plate (1), its characterized in that: the bottom of the bottom plate (1) is provided with a mounting assembly (2), the top surface of the bottom plate (1) is provided with a first supporting plate (19), the top surface of the first supporting plate (19) is provided with a second supporting plate (20), the top surface of the first supporting plate (19) is provided with a first fixing pad (33), the top surface of the first fixing pad (33) is provided with a first fixing frame (35), the outer wall of the first fixing frame (35) is provided with a first fixing band (36), the first fixing frame (35) is provided with two, one end of the first fixing band (36) is sleeved on the outer wall of one of the first fixing frames (35), the other end of the first fixing band (36) penetrates through the outer wall of the other first fixing frame (35), the top surface of the second supporting plate (20) is provided with a second fixing pad (34), the outer wall of the second fixing frame (37) is provided with a second fixing band (38), one end of the second fixing band (37) is sleeved on the outer wall of the other fixing band (37), and the other end of the second fixing band (37) penetrates through the other fixing band (38);

The top of bottom plate (1) is provided with spacing subassembly (21), the bottom surface of second backup pad (20) is provided with arm-tie (32).

2. The arm fixing device for intracardiac intervention according to claim 1, wherein: the limiting assembly (21) comprises a first mounting groove (22) formed in the top surface of the bottom plate (1), a first limiting ball (23) arranged in the first mounting groove (22), a first limiting ring (24) arranged on the inner wall of the first mounting groove (22), and a first limiting groove (26) formed in the bottom surface of the first supporting plate (19);

the limiting assembly (21) further comprises a second mounting groove (27) formed in the top surface of the first supporting plate (19), a second limiting ball (28) arranged in the second mounting groove (27), a second limiting ring (29) arranged on the inner wall of the second mounting groove (27), and a second limiting groove (31) formed in the bottom surface of the second supporting plate (20).

3. The arm fixing device for intracardiac intervention according to claim 2, wherein: the limiting assembly (21) further comprises a second elastic piece (25) arranged in the first mounting groove (22), and a third elastic piece (30) arranged in the second mounting groove (27).

4. An intracardiac arm fixing device for interventional therapy according to claim 3, wherein: the installation component (2) including set up in slide rail (8) of bottom plate (1), set up in slide base (9) of bottom plate (1) bottom surface, set up in installing support (3) of slide rail (8) bottom, set up in fixed disk (4) of installing support (3) outer wall, set up in first threaded rod (5) of fixed disk (4) outer wall, and set up in first non slipping spur (6) on first threaded rod (5) top, and slide base (9) slide in the inside of slide rail (8), fixed disk (4) are provided with two, the quantity of first threaded rod (5) is the same with fixed disk (4), the quantity of first non slipping spur (6) is the same with fixed disk (4).

5. The arm fixing device for intracardiac intervention according to claim 4, wherein: the installation component (2) still including set up in constant head tank (10) of sliding base (9) side, set up in constant head tank (10) inside locating lever (11), set up in first locating hole (13) of slide rail (8) side, set up in second locating hole (14) of slide rail (8) side to and set up in inside first elastic component (12) of constant head tank (10), and the one end of first elastic component (12) and the inner wall fixed connection of constant head tank (10), the other end and the outer wall fixed connection of locating lever (11) of first elastic component (12).

6. The arm fixing device for intracardiac intervention according to claim 5, wherein: the installation component (2) is provided with two, one of them the outer wall of installing support (3) in installation component (2) is provided with second threaded rod (7), and another the outer wall of installing support (3) in installation component (2) is provided with deflector (52).

7. The arm fixing device for intracardiac intervention according to claim 6, wherein: one of them installing support (3)'s in the installation component (2) outer wall is provided with worm wheel (15), and threaded connection between the outer wall of the inner wall of worm wheel (15) and second threaded rod (7), one of them installing support (3)'s in the installation component (2) outer wall is provided with mounting box (16), the inner wall of mounting box (16) is provided with worm (17), and mutually support between the outer wall of worm (17) and the outer wall of worm wheel (15), the outer wall of mounting box (16) is provided with driving motor (18), and the output shaft of driving motor (18) and the axial end fixed connection of worm (17).

8. The arm fixing device for intracardiac intervention according to claim 7, wherein: the top surface of second fixed bolster (34) is provided with hand pillow (39), the top surface of second fixed bolster (34) is provided with elastic webbing (40), the side of second fixed bolster (34) is provided with adjusting part (41).

9. The arm fixing device for intracardiac intervention according to claim 8, wherein: the adjusting component (41) comprises a first fixing seat (42) arranged on the side wall of the second fixing pad (34), a vent pipe (43) arranged on the inner wall of the first fixing seat (42) and communicated with the inside of the hand pillow (39), a piston rod (44) arranged in the vent pipe (43), a sliding seat (45) arranged on one end of the piston rod (44) away from the vent pipe (43), a second fixing seat (46) arranged on the side wall of the first supporting plate (19), and a guide rod (47) arranged on the outer wall of the second fixing seat (46), wherein the sliding seat (45) slides on the rod wall of the guide rod (47).

10. The arm fixing device for intracardiac intervention according to claim 9, wherein: the adjusting component (41) further comprises a control block (48) arranged on the bottom surface of the sliding seat (45), a push-pull rod (49) arranged in the control block (48), a rubber pad (50) arranged at the top end of the push-pull rod (49), and a fourth elastic piece (51) arranged on the outer wall of the push-pull rod (49), one end of the fourth elastic piece (51) is fixedly connected with the bottom surface of the rubber pad (50), and the other end of the fourth elastic piece (51) is fixedly connected with the top surface of the control block (48).