CN221830816U - A fixation device for preventing head displacement during interventional surgery - Google Patents

Abstract

The utility model relates to the technical field of head displacement prevention, and discloses a fixing device for head displacement prevention in interventional surgery. The fixing device for head displacement prevention in interventional surgery comprises a base, a U-shaped frame is slidably connected to the inner wall of the upper end of the base, a bidirectional screw is rotatably connected to the inner wall of the base, a splint is threadedly connected to the outer wall of the bidirectional screw, a turning handle is fixedly connected to the outer wall of the right end of the bidirectional screw, an insert is elastically connected to the right inner wall of the base through a spring, and a threaded rod is threadedly connected to the inner wall of the upper end of the U-shaped frame. The utility model drives the splint to move toward the center to clamp both sides of the head by rotating the bidirectional screw, and drives the arc plate to move downward to press the top of the head by rotating the threaded rod. The connecting rod is fixed by the block and the position of the arc plate is fixed at the same time, so as to better fix the head and avoid the consequences of mechanical operation errors.

Description

A fixation device for preventing head displacement during interventional surgery

Technical Field

The utility model relates to the technical field of head displacement prevention, in particular to a fixing device for preventing head displacement during interventional surgery.

Background Art

Interventional surgery is a method of performing examination, treatment or surgery by using catheters, probes and other equipment to enter the body through small incisions or natural cavities in the body.

Patent Publication No.: CN212089781U discloses a fixing device for preventing head displacement in neurological interventional surgery, comprising a U-shaped fixing plate, the upper end of the U-shaped fixing plate is connected to two arc splints by a movable axis, an arc-shaped head and neck placement groove is provided on the upper surface of the U-shaped fixing plate, a U-shaped support plate is fixedly connected to the upper surface of the U-shaped fixing plate, a through hole is provided on the horizontal part of the U-shaped support plate, and a threaded barrel is rotatably sleeved in the through hole through a ball bearing, a lifting screw is threadedly connected in the threaded barrel, and a pressure screw is fixedly connected to the lower end of the lifting screw. The pressure plate is connected to the upper sides of the two arc-shaped clamping plates, and the cylinder wall of the threaded cylinder is fixedly sleeved with a driven bevel gear. The upper end of the U-shaped support plate is also fixedly connected to a driving motor, and the output shaft of the driving motor is fixedly connected to an active bevel gear meshing with the driven bevel gear. The utility model drives the active bevel gear to rotate by the driving motor, and utilizes the meshing action of the active bevel gear and the driven bevel gear to drive the threaded cylinder to rotate, and then the threaded connection between the threaded cylinder and the lifting screw allows the lifting screw to push the pressure plate downward, thereby achieving a firm clamping of the two arc-shaped clamping plates, so that the patient's head can be firmly limited.

Although the above technology can achieve pressure holding of the patient's head, the sizes of patients' heads vary. The fixed-arc arc splint cannot hold the patient's sides well, and the patient's head may be easily injured if the driving motor is operated incorrectly. Therefore, a fixing device for preventing the head from shifting during interventional surgery is proposed to solve the above problem.

Utility Model Content

In view of the deficiencies of the prior art, the utility model provides a fixing device for preventing the head from shifting during interventional surgery, which solves the problems mentioned in the above background technology that the two sides cannot be firmly clamped and operating errors may easily lead to danger.

To achieve the above objectives, the utility model is implemented through the following technical solutions: a fixing device for preventing head displacement in interventional surgery, comprising a base, wherein a U-shaped frame is slidably connected to the inner wall of the upper end of the base, a two-way screw rod is rotatably connected to the inner wall of the base, a splint is threadedly connected to the outer wall of the two-way screw rod, a turning handle is fixedly connected to the outer wall of the right end of the two-way screw rod, an embedding block 1 is elastically connected to the inner wall of the right side of the base through a spring 1, a threaded rod is threadedly connected to the inner wall of the upper end of the U-shaped frame, a lower end side wall of the threaded rod is rotatably connected to an arc plate, a connecting rod is fixedly connected to the outer wall of the left end of the arc plate, a card block is elastically connected to the inner wall of the left end of the U-shaped frame through a spring 2, a pull rod is fixedly connected to the outer wall of the right end of the card block, and a limiting component is elastically connected to the inner wall of the rear end of the base through a spring 3.

Preferably, the limiting assembly includes an insert block 2, and the outer wall of the insert block 2 is elastically connected to the inner wall of the bottom end of the base through a spring 3.

Preferably, one end of the spring 1 is fixedly connected to the outer wall of the right end of the insert 1, and the other end of the spring 1 is fixedly connected to the inner wall of the right end of the base, and the upper outer wall of the insert 1 is arranged in an inclined shape.

Preferably, one end of the second spring is fixedly connected to the inner wall of the left end of the bottom end of the U-shaped frame, and the other end of the second spring is fixedly connected to the outer wall of the right end of the block, and the inner wall of the second spring is in contact with the outer wall of the pull rod.

Preferably, one end of the spring three is fixedly connected to the rear end inner wall of the base, and the other end of the spring three is fixedly connected to the right end outer wall of the insert block two, and the front end of the insert block two is arranged in an inclined shape.

Preferably, the clamping block is slidably connected to the inner wall of the left end of the U-shaped frame, the clamping block is clamped on the inner wall of the connecting rod, and a plurality of protrusions with inclined upper ends are evenly distributed on the outer wall of the left end of the clamping block.

Preferably, the outer wall of the pull rod is slidably connected to the inner wall of the U-shaped frame, and the diameter of the outer wall at the right end of the U-shaped frame is greater than the diameter of the outer wall at the left end.

Preferably, the connecting rods are symmetrically arranged, and the left end outer wall of the connecting rods is slidably connected to the left end inner wall of the U-shaped frame.

The utility model has the following beneficial effects:

1. In the utility model, the two-way screw is rotated to drive the clamp plate to move toward the center to clamp both sides of the head, and the threaded rod is rotated to drive the arc plate to move downward to press the top of the head. The connecting rod is fixed by the clamping block and the position of the arc plate is fixed at the same time, so as to better fix the head and avoid the consequences of mechanical operation errors.

2. In the utility model, the split design of the U-shaped frame and the base allows patients whose heads cannot move to place their heads in the fixing device for surgery more conveniently, and the device is easy to assemble and disassemble, and has a wider range of uses.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

Figure 2 is a schematic diagram of the structure of the curved plate of the utility model;

Figure 3 is a schematic diagram of the structure of the threaded rod of the utility model;

Figure 4 is a schematic diagram of the pull rod structure of the utility model;

Figure 5 is a schematic diagram of the structure of the second insert block of the utility model;

FIG. 6 is a schematic diagram of the structure of an insert block according to the present invention.

Legend:

1. Base; 2. U-shaped frame; 3. Clamp; 4. Connecting rod; 5. Threaded rod; 6. Arc plate; 7. Bidirectional screw rod; 8. Block; 9. Spring 2; 10. Pull rod; 11. Block 2; 12. Spring 3; 13. Turning handle; 14. Spring 1; 15. Block 1.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1, 2, 4 and 6. The utility model provides a fixing device for preventing the head from shifting during interventional surgery, including a base 1. The center of the upper outer wall of the base 1 is arranged in an arc shape, and a soft pad is pasted on the center of the upper outer wall of the base 1. The arrangement of the base 1 is convenient for the installation of the device. A U-shaped frame 2 is slidably connected to the inner wall of the upper end of the base 1. The U-shaped frame 2 is used to support the rotation of the threaded rod 5. A bidirectional screw rod 7 is rotatably connected to the inner wall of the base 1. The bidirectional screw rod 7 is rotated clockwise to drive the splint 3 to move toward the center, and the bidirectional screw rod 7 is rotated counterclockwise to drive the splint 3 to move to both sides. The outer wall of the bidirectional screw rod 7 is connected with a splint 3 by a thread. The splint 3 is used to fix the two sides of the head. The inner outer wall of the splint 3 is pasted with a soft pad. A handle 13 is fixedly connected, and the handle 13 is used to drive the rotation of the bidirectional screw rod 7. A plurality of limit grooves are provided on the inner wall of the side of the handle 13. An insert block 15 is elastically connected to the right inner wall of the base 1 through a spring 14. When the handle 13 rotates clockwise, the edge of the limit groove on the inner wall of the side of the handle 13 squeezes the upper inclined surface of the insert block 15, and the inclined surface of the insert block 15 is squeezed away from the inner wall of the handle 13. One end of the spring 14 is fixedly connected to the outer wall of the right end of the insert block 15, and the other end of the spring 14 is fixedly connected to the inner wall of the right end of the base 1. The upper outer wall of the insert block 15 is inclined. A threaded rod 5 is threadedly connected to the inner wall of the upper end of the U-shaped frame 2. The arc plate 6 can be driven to move by rotating the threaded rod 5. The lower end side wall of the threaded rod 5 is rotated and connected An arc-shaped plate 6 is connected, and a cushion is pasted on the outer wall of the bottom end of the arc-shaped plate 6. The arc-shaped plate 6 is configured to fix the head from the upper end. A connecting rod 4 is fixedly connected to the outer wall of the left end of the arc-shaped plate 6. The connecting rod 4 is configured to limit the rotation of the arc-shaped plate 6 so that the arc-shaped plate 6 can only move vertically. The connecting rod 4 is symmetrically arranged. The outer wall of the left end of the connecting rod 4 is slidably connected to the inner wall of the left end of the U-shaped frame 2. A clamping block 8 is elastically connected to the inner wall of the left end of the U-shaped frame 2 through a spring 29. The connecting rod 4 moves downward as the threaded rod 5 rotates. The outer wall edge of the connecting rod 4 squeezes the upper end inclined surface of the clamping block 8. The clamping block 8 is forced to move to the right and leave the inner wall of the connecting rod 4. When the connecting rod 4 stops, the clamping block 8 is clamped on the inner wall of the connecting rod 4 to fix the connecting rod 4. The clamping block 8 is slidably connected to the left end of the U-shaped frame 2 On the inner wall, the block 8 is clamped on the inner wall of the connecting rod 4, and a plurality of protrusions with inclined upper ends are evenly distributed on the outer wall of the left end of the block 8. One end of the spring 29 is fixedly connected to the inner wall of the left end of the bottom end of the U-shaped frame 2, and the other end of the spring 29 is fixedly connected to the outer wall of the right end of the block 8. The inner wall of the spring 29 contacts the outer wall of the pull rod 10, and the right end outer wall of the block 8 is fixedly connected with the pull rod 10. By moving the pull rod 10 to the right, the block 8 can be driven to move to the right and leave the inner wall of the connecting rod 4. At this time, the threaded rod 5 can be rotated to drive the arc plate 6 to move upward, and the outer wall of the pull rod 10 is slidably connected to the inner wall of the U-shaped frame 2. The diameter of the outer wall of the right end of the U-shaped frame 2 is larger than the diameter of the outer wall of the left end. The rear end inner wall of the base 1 is elastically connected with a limiting component through a spring three 12.

Please refer to Figures 3 and 5. The limiting component includes an insert block 11, which is configured to fix the U-shaped frame 2. The U-shaped frame 2 slides in from the rear end inner wall of the base 1, and the front end outer wall of the U-shaped frame 2 squeezes the inclined surface of the insert block 11. The insert block 11 is retracted to the inner wall of the base 1 under force. When the U-shaped frame 2 is completely moved into the inner wall of the base 1, the insert block 11 pops out to fix the U-shaped frame 2. The outer wall of the insert block 11 is elastically connected to the bottom inner wall of the base 1 through a spring 3 12. One end of the spring 3 12 is fixedly connected to the rear end inner wall of the base 1, and the other end of the spring 3 12 is fixedly connected to the right end outer wall of the insert block 11. The front end of the insert block 11 is arranged in an inclined shape.

Working principle: After the base 1 is fixed on the operating table, the patient's head moves to the center of the upper outer wall of the base 1, and the U-shaped frame 2 slides in from the rear inner wall of the base 1, and the front outer wall of the U-shaped frame 2 squeezes the inclined surface of the second insert 11, and the second insert 11 is forced to retract to the inner wall of the base 1. When the U-shaped frame 2 is completely moved into the inner wall of the base 1, the second insert 11 pops out to fix the U-shaped frame 2, and the handle 13 is rotated clockwise. The edge of the upper limit groove on the inner wall of the side of the handle 13 squeezes the upper end inclined surface of the insert 15, and the inclined surface of the insert 15 is squeezed away from the inner wall of the handle 13. When the splint 3 clamps the patient's head, it stops rotating, and the embedded block 15 is clamped on the inner wall of the rotating handle 13 to fix the rotating handle 13, and then the threaded rod 5 is rotated, and the threaded rod 5 drives the arc plate 6 to move downward. During the movement, the outer wall edge of the connecting rod 4 squeezes the upper end inclined surface of the clamping block 8, and the clamping block 8 is forced to move to the right and leave the inner wall of the connecting rod 4. When the outer wall of the bottom end of the arc plate 6 presses against the top of the patient's head, it stops, and the clamping block 8 is clamped on the inner wall of the connecting rod 4 to fix the connecting rod 4 and the arc plate 6, completing the fixation of the patient's head, and then the subsequent operations can be carried out.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A fixing device for preventing head displacement during interventional surgery, comprising a base (1), characterized in that: a U-shaped frame (2) is slidably connected to the inner wall of the upper end of the base (1), a bidirectional screw rod (7) is rotatably connected to the inner wall of the base (1), a clamping plate (3) is threadedly connected to the outer wall of the bidirectional screw rod (7), a rotating handle (13) is fixedly connected to the outer wall of the right end of the bidirectional screw rod (7), and an insert (15) is elastically connected to the right inner wall of the base (1) via a spring (14). A threaded rod (5) is connected to the inner wall of the upper end of the U-shaped frame (2) through a thread, and the lower end side wall of the threaded rod (5) is rotatably connected to an arc plate (6). The left end outer wall of the arc plate (6) is fixedly connected to a connecting rod (4). The left end inner wall of the U-shaped frame (2) is elastically connected to a clamping block (8) through a second spring (9), and the right end outer wall of the clamping block (8) is fixedly connected to a pull rod (10). The rear end inner wall of the base (1) is elastically connected to a limiting component through a third spring (12). 2. A fixing device for preventing head displacement during interventional surgery according to claim 1, characterized in that: the limiting component includes an insert block 2 (11), and the outer wall of the insert block 2 (11) is elastically connected to the inner wall of the bottom end of the base (1) through a spring 3 (12). 3. A fixing device for preventing head displacement during interventional surgery according to claim 1, characterized in that: one end of the spring (14) is fixedly connected to the outer wall of the right end of the insert (15), the other end of the spring (14) is fixedly connected to the inner wall of the right end of the base (1), and the upper outer wall of the insert (15) is arranged in an inclined shape. 4. A fixing device for preventing head displacement during interventional surgery according to claim 1, characterized in that one end of the second spring (9) is fixedly connected to the inner wall of the left end of the bottom end of the U-shaped frame (2), and the other end of the second spring (9) is fixedly connected to the outer wall of the right end of the block (8), and the inner wall of the second spring (9) is in contact with the outer wall of the pull rod (10). 5. A fixing device for preventing head displacement during interventional surgery according to claim 2, characterized in that one end of the spring three (12) is fixedly connected to the rear end inner wall of the base (1), and the other end of the spring three (12) is fixedly connected to the right end outer wall of the insert block two (11), and the front end of the insert block two (11) is arranged in an inclined shape. 6. A fixing device for preventing head displacement during interventional surgery according to claim 1, characterized in that: the clamping block (8) is slidably connected to the inner wall of the left end of the U-shaped frame (2), the clamping block (8) is clamped on the inner wall of the connecting rod (4), and the outer wall of the left end of the clamping block (8) is evenly distributed with a plurality of protrusions with inclined upper ends. 7. A fixing device for preventing head displacement during interventional surgery according to claim 1, characterized in that the outer wall of the pull rod (10) is slidably connected to the inner wall of the U-shaped frame (2), and the outer wall diameter of the right end of the U-shaped frame (2) is larger than the outer wall diameter of the left end. 8. A fixing device for preventing head displacement during interventional surgery according to claim 1, characterized in that the connecting rods (4) are symmetrically arranged, and the left end outer wall of the connecting rods (4) is slidably connected to the left end inner wall of the U-shaped frame (2).