CN116898504A - A chest expansion device for extracardiac surgery - Google Patents

Abstract

The invention discloses an extracardiac operation chest cavity opening device, which relates to the field of operation auxiliary equipment and comprises a base, wherein the outer wall of the base is connected with a positioning mechanism in a sliding manner, the top end of the positioning mechanism is fixedly connected with a lifting mechanism, and one side of the lifting mechanism is fixedly connected with a pushing mechanism. According to the invention, the expanding mechanism is arranged, when the chest cavity is expanded, the third spring and the second spring buffer the force of the pushing mechanism driving the U-shaped plate to push the human body, so that the chest cavity is more flexibly expanded, and the expanding opening is not further torn due to too direct pushing force; according to the chest opening measuring device, the length of the chest opening can be measured through the measuring ruler, then the contact area between the chest opening measuring device and a human body is adjusted through adjusting the opening assembly according to the chest opening length, when the chest opening is opened by the chest opening measuring device, the moving mechanism can drive the measuring ruler to be far away from the chest opening after the chest opening is measured, and the subsequent operation is not influenced by the occupied space.

Description

A chest expansion device for extracardiac surgery

Technical field

The invention relates to the field of surgical auxiliary equipment, specifically a chest expansion device for extracardiac surgery.

Background technique

Cardiothoracic surgery also includes cardiac surgery and general thoracic surgery. Cardiac surgery studies cardiac macrovascular trauma, pericardial disease, congenital heart disease, acquired heart valve disease, ischemic heart disease, cardiac tumors, macrovascular disease, and interventional diseases. Sexual therapy techniques, surgical treatment of cardiac arrhythmias, cardiac pacing and implantable defibrillator cardioverters, dynamic cardiomyoplasty, heart, lung and heart-lung transplantation.

When performing surgical treatment in cardiothoracic surgery, it is generally necessary to establish a surgical access between adjacent ribs, and then use a distraction device to spread the gap between the ribs to fully expose the surgical field, and then close it after the operation is completed.

When openings of different sizes are opened, the same size of opening tools are generally used. The contact surface between the opening device and the human body cannot be adjusted according to the size of the opening. When opening a larger opening, the contact surface The small surface makes the ribs bear uneven stress, which can easily cause the ribs at the supporting points to be damaged or even broken. At the same time, the device's poor control of the strength during expansion can easily lead to human body injury, leading to further tears at the opening, which will cause the patient to undergo surgery. Increased pain afterwards.

Contents of the invention

Based on this, the purpose of the present invention is to provide a chest expansion device for extracardiac surgery to solve the technical problems raised in the above background.

In order to achieve the above object, the present invention provides the following technical solution: a chest expansion device for extracardiac surgery, including a base, the outer wall of the base is slidably connected to a positioning mechanism, and the top end of the positioning mechanism is fixedly connected to a lifting mechanism. A pushing mechanism is fixedly connected to one side of the lifting mechanism, a spreading mechanism is fixedly connected to the bottom end of the pushing mechanism, a moving mechanism is engaged with the pushing mechanism, and a measuring ruler is fixedly connected to the bottom end of the moving mechanism; The opening mechanism includes an L-shaped spreading plate, a relief groove, a second spring, a sliding plate, a sliding rod, a third spring and a spreading component. The bottom end of the pushing mechanism is fixedly connected to an L-shaped spreading plate, and the L A relief groove is provided on the shaped support plate. A second spring is fixedly connected to the groove of the relief groove. One end of the second spring is fixedly connected to a sliding plate. One side of the sliding plate is fixedly connected to a sliding plate. Rod, one end of the sliding rod is fixedly connected with an expansion component, one side of the L-shaped expansion plate is fixedly connected with a third spring, the relief groove, the second spring, the sliding plate, the sliding rod and the third The springs are provided with two groups.

As a preferred technical solution of the present invention, the expansion assembly includes a U-shaped plate, an extension plate, a second rack, a second gear and a fixed shaft. One end of the sliding rod is fixedly connected to a U-shaped plate, and the An extension plate is slidably connected to the inner wall of the U-shaped plate. A second rack is fixedly connected to the top of the extension plate. A second gear is engaged with the second rack. A fixed shaft is fixedly connected to one side of the second gear. , the fixed shaft is rotationally connected to the U-shaped plate, and the U-shaped plate is fixedly connected to one end of the third spring.

As a preferred technical solution of the present invention, the pushing mechanism includes a connecting block, a U-shaped block, a second threaded rod, a chute, a trapezoidal block, a pushing block, a slot, a clamping bar and a first rack. A connecting block is fixedly connected to one side of the mechanism, a U-shaped block is fixedly connected to one side of the connecting block, a second threaded rod is threadedly connected to the inner wall of the U-shaped block, and the bottom end of the second threaded rod is rotationally connected. There is a pushing block, a clamping slot is provided on the pushing block, a clamping strip is slidingly connected in the clamping slot, a trapezoidal block is fixedly connected to one side of the clamping strip, and a chute is arranged on the U-shaped block. There is a trapezoidal block slidingly connected in the chute groove, and a first rack is fixedly connected to one side of the U-shaped block. There are two groups of chute, trapezoidal block, clamping groove and clamping strip, and the two groups are provided with the first rack. The chute, trapezoidal block, clamping groove and clamping strip are symmetrically arranged on both sides of the second threaded rod. The bottom end of the trapezoidal block is fixedly connected with an L-shaped expansion plate, and the first rack is engaged with a moving mechanism.

As a preferred technical solution of the present invention, the positioning mechanism includes a moving block, a first threaded rod, a connecting ring, an L-shaped connecting rod, a pressing block, a positioning component, an I-shaped block, a first spring and a baffle. A moving block is slidably connected to the outer wall of the base, and a first threaded rod is threadedly connected to the inner wall of the moving block. A connecting ring is rotatably connected to the outer wall of the first threaded rod, and an L-shaped connection is fixedly connected to one side of the connecting ring. Rod, the bottom end of the L-shaped connecting rod is fixedly connected with a pressing block, the bottom end of the first threaded rod is rotationally connected with an I-shaped block, the bottom end of the I-shaped block is fixedly connected with a first spring, and the A baffle is fixedly connected to the inner wall of the moving block, and a positioning assembly is fixedly connected to the inner wall of the baffle. The pressure block is slidingly connected to the baffle. One end of the first spring is fixedly connected to the pressure block. The L There is a sliding connection between the connecting rod and the moving block, and a lifting mechanism is fixedly connected to the top of the moving block.

As a preferred technical solution of the present invention, the positioning assembly includes a small cylinder, a connecting plate, a large cylinder, a positioning column and a movable groove. The inner wall of the baffle is fixedly connected to a positioning column, and the outer wall of the positioning column is rotatably sleeved. There is a large cylinder, one side of the large cylinder is fixedly connected with a connecting plate, one side of the connecting plate is fixedly connected with a small cylinder, the pressure block is provided with a movable groove, the small cylinder and the connecting plate are both provided with Two groups of small cylinders and connecting plates are symmetrically arranged on both sides of the large cylinder. One group of small cylinders is engaged with the inner wall of the I-shaped block, and the other group of small cylinders is engaged with the movable groove. , the L-shaped connecting rod and the positioning assembly are provided with two groups, and the two groups of the L-shaped connecting rod and the positioning assembly are symmetrically arranged on both sides of the I-shaped block.

As a preferred technical solution of the present invention, the lifting mechanism includes a support column, a screw rod, a moving frame, a fixed frame and a limiting rod. The top ends of the two moving blocks are fixedly connected to the supporting column, and one of the moving blocks is fixedly connected with a supporting column. A screw rod is rotatably connected to the inner wall of the support column. The outer wall of the screw rod is threadedly connected to a movable frame. One side of the support column is fixedly connected to a fixed frame. The two sets of support columns are symmetrically arranged at both ends of the fixed frame. The moving frame is slidingly connected to the support column, the inner wall of the other support column is rotationally connected to the limiting rod, and the inner wall of the moving frame is slidingly connected to the limiting rod.

As a preferred technical solution of the present invention, the moving mechanism includes a first gear, a first connecting shaft, a first bevel gear, a second bevel gear, a second connecting shaft, a third gear, a moving component and a first fixed block , the first rack meshes with a first gear, the inner wall of the first gear is fixedly connected with a first connecting shaft, the outer wall of the first connecting shaft is fixedly sleeved with a first bevel gear, the first bevel gear The gear meshes with a second bevel gear. The top end of the second bevel gear is fixedly connected with a second connecting shaft. The outer wall of the second connecting shaft is fixedly sleeved with a third gear. The third gear meshes with a moving component. One end of the first connecting shaft is rotatably connected to a first fixed block, the top end of the first fixed block is fixedly connected to a fixed frame, and the second connecting shaft is rotatably connected to the fixed frame.

As a preferred technical solution of the present invention, the moving assembly includes a fourth gear, a first rotating column, an arc-shaped limiting groove, a first limiting shaft, a second rotating column, an L-shaped limiting groove, a second limiting groove, and a first limiting shaft. The position shaft and the second fixed block, the third gear meshes with a fourth gear, the bottom end of the fourth gear is fixedly connected to a first rotating column, and an arc-shaped limiting groove is provided on the first rotating column. A first limiting shaft is slidably connected in the arc-shaped limiting groove. One end of the first limiting shaft is fixedly connected to a second rotating column, and an L-shaped limiting groove is provided on the second rotating column. , a second limiting shaft is slidably connected in the L-shaped limiting groove, a second fixed block is fixedly connected to the outer wall of the second limiting shaft, and the top end of the second fixed block is fixedly connected to the fixing frame The bottom end of the second rotating column is slidably connected to the inner wall of the first rotating column, and a measuring ruler is fixedly connected to the bottom end of the second rotating column.

As a preferred technical solution of the present invention, two groups of bases, positioning mechanisms and expansion mechanisms are provided, and the two groups of bases, positioning mechanisms and expansion mechanisms are symmetrically arranged on both sides of the pushing mechanism.

To sum up, the present invention mainly has the following beneficial effects:

1. In the present invention, by arranging a spreading mechanism, when the chest cavity is stretched, the third spring and the second spring buffer the force of the U-shaped plate driven by the pushing mechanism to push the human body, and the chest cavity is stretched more flexibly without causing any problems. Because the pushing force is too direct, the opening will be further torn;

2. In the present invention, the length of the chest opening can be measured with a measuring ruler, and then according to the length of the chest opening, the contact area of the device with the human body when expanding the chest is adjusted by adjusting the expansion component. When spreading, the moving mechanism will drive the measuring ruler away from the chest opening after measuring the opening, so that it does not occupy space and affect subsequent operations;

3. The present invention uses a positioning mechanism to fix the device on the operating table through a base. Even if the device is unintentionally touched during the operation, it will not cause the device to shake, avoiding additional damage to the patient, and the positioning mechanism With the lifting mechanism, the position and height can be adjusted arbitrarily according to patients of different body shapes, and the chest cavity can be stretched to facilitate surgery.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic diagram of the internal structure of the present invention;

Figure 3 is an enlarged view of part A in Figure 2 of the present invention;

Figure 4 is an enlarged view of part B in Figure 2 of the present invention;

Figure 5 is a schematic structural diagram of the pushing mechanism of the present invention;

Figure 6 is a schematic structural diagram of the moving mechanism of the present invention;

Figure 7 is a schematic structural diagram of the expansion mechanism of the present invention;

Figure 8 is a cross-sectional view of the expansion mechanism of the present invention.

In the picture: 100, base; 200, positioning mechanism; 300, lifting mechanism; 400, pushing mechanism; 500, spreading mechanism; 600, moving mechanism; 700, measuring ruler;

210. Moving block; 220. First threaded rod; 230. Connecting ring; 240. L-shaped connecting rod; 250. Pressing block; 260. Positioning component; 270. I-shaped block; 280. First spring; 290. Baffle ;

261. Small cylinder; 262. Connecting plate; 263. Large cylinder; 264. Positioning column; 265. Movable slot;

310. Support column; 320. Screw rod; 330. Moving frame; 340. Fixed frame; 350. Limit rod;

410. Connecting block; 420. U-shaped block; 430. Second threaded rod; 440. Chute; 450. Trapezoidal block; 460. Pushing block; 470. Clamping groove; 480. Clamping bar; 490. First rack;

510. L-shaped spreading plate; 520. Giving slot; 530. Second spring; 540. Sliding plate; 550. Sliding rod; 560. Third spring; 570. Spreading component;

571. U-shaped plate; 572. Extension plate; 573. Second rack; 574. Second gear; 575. Fixed shaft;

610. First gear; 620. First connecting shaft; 630. First bevel gear; 640. Second bevel gear; 650. Second connecting shaft; 660. Third gear; 670. Moving component; 680. First fixed piece;

671. The fourth gear; 672. The first rotating column; 673. Arc-shaped limiting groove; 674. The first limiting shaft; 675. The second rotating column; 676. L-shaped limiting groove; 677. The second limiting groove Shaft; 678, second fixed block.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and cannot be understood as limiting the present invention.

The embodiments of the present invention will be described below based on the overall structure of the present invention.

A chest expansion device for extracardiac surgery, as shown in Figures 1 to 8, includes a base 100. A positioning mechanism 200 is slidably connected to the outer wall of the base 100, and a lifting mechanism 300 is fixedly connected to the top of the positioning mechanism 200. The lifting mechanism 300 has A pushing mechanism 400 is fixedly connected to one side, a spreading mechanism 500 is fixedly connected to the bottom end of the pushing mechanism 400, a moving mechanism 600 is engaged with the pushing mechanism 400, and a measuring ruler 700 is fixedly connected to the bottom end of the moving mechanism 600; the spreading mechanism 500 includes L-shaped expansion plate 510, relief groove 520, second spring 530, sliding plate 540, sliding rod 550, third spring 560 and expansion assembly 570. The L-shaped expansion plate 510 is fixedly connected to the bottom end of the pushing mechanism 400. , the L-shaped expansion plate 510 is provided with a relief groove 520, a second spring 530 is fixedly connected to the groove of the relief groove 520, one end of the second spring 530 is fixedly connected to a sliding plate 540, and one side of the sliding plate 540 is fixed A sliding rod 550 is connected, one end of the sliding rod 550 is fixedly connected with a spreading component 570, one side of the L-shaped spreading plate 510 is fixedly connected with a third spring 560, a relief groove 520, a second spring 530, a sliding plate 540, The sliding rod 550 and the third spring 560 are each provided with two groups; the expansion assembly 570 includes a U-shaped plate 571, an extension plate 572, a second rack 573, a second gear 574 and a fixed shaft 575. One end of the sliding rod 550 is fixedly connected There is a U-shaped plate 571. An extension plate 572 is slidably connected to the inner wall of the U-shaped plate 571. A second rack 573 is fixedly connected to the top of the extension plate 572. The second rack 573 is engaged with a second gear 574. The second gear 574 is A fixed shaft 575 is fixedly connected to one side, and the fixed shaft 575 is rotationally connected to the U-shaped plate 571. The U-shaped plate 571 is fixedly connected to one end of the third spring 560; the pushing mechanism 400 includes a connecting block 410, a U-shaped block 420, and a third spring 560. The two threaded rods 430, the chute 440, the trapezoidal block 450, the pushing block 460, the clamping groove 470, the clamping bar 480 and the first rack 490 are fixedly connected to one side of the lifting mechanism 300 with a connecting block 410, and one side of the connecting block 410 A U-shaped block 420 is fixedly connected. The inner wall of the U-shaped block 420 is threadedly connected with a second threaded rod 430. The bottom end of the second threaded rod 430 is rotationally connected with a pushing block 460. The pushing block 460 is provided with a card slot 470. The card slot A clamp strip 480 is slidably connected in the slot 470. A trapezoidal block 450 is fixedly connected to one side of the clamp strip 480. A chute 440 is provided on the U-shaped block 420. The trapezoidal block 450 and the U-shaped block 420 are slidably connected in the chute 440. A first rack 490 is fixedly connected to the side of Symmetrically arranged on both sides of the second threaded rod 430, the bottom end of the trapezoidal block 450 is fixedly connected with an L-shaped expansion plate 510, and the first rack 490 is engaged with the moving mechanism 600.

When the chest cavity is stretched, the pushing mechanism 400 is adjusted to an appropriate position through the positioning mechanism 200 and the lifting mechanism 300, and the second threaded rod 430 is rotated. Since the part connecting the U-shaped block 420 and the second threaded rod 430 is provided with The outer wall of the second threaded rod 430 matches the threads. When the second threaded rod 430 is rotated, the second threaded rod 430 moves downward at the same time, thus driving the pushing block 460 to move downward. Since the inclined surface of the pushing block 460 fits the trapezoidal block 450 The inclined surface drives the two sets of trapezoidal blocks 450 to move in opposite directions, thereby driving the expansion mechanism 500 to expand the chest cavity.

When the expansion mechanism 500 expands the chest cavity, the two sets of U-shaped plates 571 move in the opposite direction driven by the trapezoidal block 450, thereby driving the U-shaped plates 571 to expand the chest cavity. After the U-shaped plates 571 contact the human body, , when the L-shaped expansion plate 510 continues to move, the third spring 560 pushes the sliding plate 540 to move in the relief groove 520, thereby driving the second spring 530 to be compressed. At this time, due to the U-shaped plate 571 and the L-shaped expansion plate 510 The distance between them becomes smaller, and the third spring 560 is also compressed. The third spring 560 and the second spring 530 buffer the force of the U-shaped plate 571 driven by the pushing mechanism 400 to push the human body, and expand the chest cavity more flexibly. The opening will not be further torn due to too direct pushing force.

Before opening the wound, the moving mechanism 600 can be used to drive the measuring ruler 700 to measure the length of the opening, and the fixed shaft 575 can be rotated to drive the second gear 574 to rotate, thereby driving the extension plate 572 to move along the U-shaped plate 571. Furthermore, the size of the contact surface between the device and the human body is adjusted when the chest cavity is expanded. The contact surfaces between the U-shaped plate 571 and the extension plate 572 and the human body can be made of rubber material.

Please refer to FIGS. 1 to 3 . The positioning mechanism 200 includes a moving block 210 , a first threaded rod 220 , a connecting ring 230 , an L-shaped connecting rod 240 , a pressure block 250 , a positioning component 260 , an I-shaped block 270 , and a first spring 280 and the baffle 290. The outer wall of the base 100 is slidingly connected to a moving block 210. The inner wall of the moving block 210 is threadedly connected to a first threaded rod 220. The outer wall of the first threaded rod 220 is rotatably connected with a connecting ring 230. One side of the connecting ring 230 An L-shaped connecting rod 240 is fixedly connected. The bottom end of the L-shaped connecting rod 240 is fixedly connected with a pressure block 250. The bottom end of the first threaded rod 220 is rotationally connected with an I-shaped block 270. The bottom end of the I-shaped block 270 is fixedly connected with The first spring 280 has a baffle 290 fixedly connected to the inner wall of the moving block 210. The positioning assembly 260 is fixedly connected to the inner wall of the baffle 290. One end of the first spring 280 and the pressure block 250 are slidingly connected between the pressure block 250 and the baffle 290. Fixed connection between the L-shaped connecting rod 240 and the moving block 210 is slidingly connected, and the top of the moving block 210 is fixedly connected with the lifting mechanism 300; the positioning component 260 includes a small cylinder 261, a connecting plate 262, a large cylinder 263, a positioning column 264 and The movable groove 265 and the inner wall of the baffle 290 are fixedly connected with a positioning column 264. The outer wall of the positioning column 264 is rotatably connected with a large cylinder 263. One side of the large cylinder 263 is fixedly connected with a connecting plate 262, and one side of the connecting plate 262 is fixedly connected with a connecting plate 262. The small cylinder 261 and the pressure block 250 are provided with movable grooves 265. There are two groups of small cylinders 261 and connecting plates 262. The two groups of small cylinders 261 and connecting plates 262 are symmetrically arranged on both sides of the large cylinder 263. One group of small cylinders 261 is engaged with the inner wall of the I-shaped block 270, and another group of small cylinders 261 is engaged with the movable groove 265. There are two sets of L-shaped connecting rods 240 and positioning components 260, and two sets of L-shaped connecting rods 240 and positioning components are provided. The components 260 are symmetrically arranged on both sides of the I-shaped block 270 .

Before the chest cavity is expanded, the base 100 is fixedly installed on the operating bed. When using the device, the moving block 210 is engaged with the base 100, and then the position of the moving block 210 is moved to adjust the position of the pushing mechanism 400. , after moving to the appropriate position, rotate the first threaded rod 220. Since the connecting part of the moving block 210 and the first threaded rod 220 is provided with threads that match the threads of the outer wall of the first threaded rod 220, the first threaded rod 220 rotates while moving longitudinally, thereby driving the I-shaped block 270 to move longitudinally. When the first threaded rod 220 drives the I-shaped block 270 to move upward, it drives a group of small cylinders 261 connected to the I-shaped block 270 to move upward, thus driving the I-shaped block 270 The large cylinder 263 connected through the connecting plate 262 rotates with the positioning column 264 as the axis, thereby driving a group of small cylinders 261 connected with the movable groove 265 to move downward, and then driving the pressing block 250 to move downward. When the pressing block 250 is fitted After the base 100, the pressure block 250 continues to move downward, thereby tightly pressing the base 100, and then driving the moving block 210 to be fixed on the base 100 and unable to move at will. In order to increase the friction, the base 100 and the pressure block The contact surface of 250 can be provided with anti-slip rubber material to prevent the pressing block 250 from sliding after the moving block 210 is fixed.

Please refer to Figures 2 to 6. The lifting mechanism 300 includes a support column 310, a screw rod 320, a moving frame 330, a fixed frame 340 and a limiting rod 350. The tops of the two moving blocks 210 are fixedly connected to the support columns 310, wherein A screw rod 320 is rotatably connected to the inner wall of a support column 310. The outer wall of the screw rod 320 is threaded with a movable frame 330. A fixed frame 340 is fixedly connected to one side of the support column 310. Two sets of support columns 310 are symmetrically arranged on the fixed frame 340. At both ends, the moving frame 330 is slidingly connected to the support column 310, the inner wall of the other support column 310 is rotationally connected to the limiting rod 350, and the inner wall of the moving frame 330 is slidingly connected to the limiting rod 350; the moving mechanism 600 includes a first The gear 610, the first connecting shaft 620, the first bevel gear 630, the second bevel gear 640, the second connecting shaft 650, the third gear 660, the moving assembly 670 and the first fixed block 680, the first rack 490 is engaged with the A gear 610. The inner wall of the first gear 610 is fixedly connected with a first connecting shaft 620. The outer wall of the first connecting shaft 620 is fixedly connected with a first bevel gear 630. The first bevel gear 630 is engaged with a second bevel gear 640. The top end of the second bevel gear 640 is fixedly connected with the second connecting shaft 650. The outer wall of the second connecting shaft 650 is fixedly connected with the third gear 660. The third gear 660 is engaged with the moving component 670. One end of the first connecting shaft 620 is rotationally connected. There is a first fixed block 680, the top of the first fixed block 680 is fixedly connected with a fixed frame 340, and the second connecting shaft 650 is rotationally connected to the fixed frame 340; the moving assembly 670 includes a fourth gear 671, a first rotating column 672, Arc-shaped limiting groove 673, first limiting shaft 674, second rotating column 675, L-shaped limiting groove 676, second limiting shaft 677 and second fixed block 678. The third gear 660 meshes with the fourth gear 671 , a first rotating column 672 is fixedly connected to the bottom end of the fourth gear 671, an arc-shaped limiting groove 673 is provided on the first rotating column 672, and a first limiting shaft 674 is slidably connected in the arc-shaped limiting groove 673. , one end of the first limiting shaft 674 is fixedly connected with a second rotating column 675, the second rotating column 675 is provided with an L-shaped limiting groove 676, and a second limiting shaft is slidably connected in the groove of the L-shaped limiting groove 676. 677. The outer wall of the second limiting shaft 677 is fixedly connected with a second fixing block 678. The top end of the second fixing block 678 is fixedly connected to the bottom end of the fixing frame 340. The outer wall of the second rotating column 675 is connected with the first rotating column 672. The inner wall is slidably connected, and a measuring ruler 700 is fixedly connected to the bottom end of the second rotating column 675 .

After the position of the positioning mechanism 200 is fixed, the screw rod 320 is rotated to drive the movable frame 330 to move. Due to the restriction of the limit rod 350, the movable frame 330 moves longitudinally along the screw rod 320, thereby adjusting the height of the movable frame 330. Before the mobile frame 330 moves downward, the length of the chest opening can be measured by the measuring ruler 700, and then the contact area between the expansion component 570 and the human body is adjusted by rotating the fixed shaft 575 according to the length of the opening, where the fixed shaft 575 can be set to Each rotation will drive the extension plate 572 to move a distance equal to one scale on the measuring ruler 700, thereby making it easier to adjust the moving distance of the extension plate 572.

When the moving frame 330 descends, the pushing mechanism 400 is driven to move downward, thereby driving the first rack 490 to move downward, thereby driving the first gear 610 to rotate, and at the same time driving the first gear 610 to connect the first gear 610 through the first connecting shaft 620 . One bevel gear 630 rotates, thereby driving the second bevel gear 640 to rotate with the second connecting shaft 650 as the axis, and then drives the third gear 660 to rotate with the second connecting shaft 650 as the axis. The rotation of the third gear 660 drives The fourth gear 671 rotates, thereby driving the first rotating column 672 to rotate, and then driving the second rotating column 675 to rotate. Under the restriction of the second limiting shaft 677, when the second rotating column 675 rotates, the second rotating column 675 rotates with L The trajectory of the L-shaped limiting groove 676 first rotates, and then changes to a longitudinal movement at the corner position of the L-shaped limiting groove 676. At this time, the first limiting shaft 674 also slides along the arc-shaped limiting groove 673, so that the second The rotating column 675 will not separate from the first rotating column 672 when moving. Under the restrictions of the arc-shaped limiting groove 673 and the second limiting shaft 677, the second rotating column 675 drives the measuring ruler 700 to rotate and move upward, so that the measuring ruler 700 moves upward. After measuring the opening, move away from the opening. When the second limiting axis 677 is located at the turning point of the L-shaped limiting groove 676, the first limiting axis 674 is located at the lowest point of the arc-shaped limiting groove 673.

Working principle: Before expanding the chest cavity, adjust the position and height of the expansion mechanism 500 through the positioning mechanism 200 and the lifting mechanism 300. After installing the moving block 210 on the base 100, move the moving block 210 to the appropriate position and rotate it. The first threaded rod 220 drives the pressing block 250 to press the base 100 downward. The contact surfaces of the base 100 and the pressing block 250 can be provided with anti-slip rubber material. The bottom surface of the pressing block 250 presses the base 100 tightly to prevent the movement of the base 100. The block 210 is fixed on the base 100 and cannot be moved at will. The position of the positioning mechanism 200 is fixed. After the position of the positioning mechanism 200 is fixed, the screw rod 320 is rotated to adjust the height of the moving frame 330, and the moving frame 330 moves downward. Before, the length of the chest opening can be measured with the measuring ruler 700, and then according to the length of the chest opening, the contact area of the device with the human body when expanding the chest is adjusted by adjusting the expansion component 570. When the mobile frame 330 is lowered, , driving the pushing mechanism 400 to move downward, thereby adjusting the height of the expansion mechanism 500. At the same time, the first rack 490 moves downward to drive the first gear 610 to rotate, thereby driving the measuring ruler 700 to move away from the opening after measuring the opening. To affect the subsequent expansion of the chest cavity by the expansion mechanism 500, the lifting mechanism 300 drives the pushing mechanism 400 to drop to a suitable position and then rotates the second threaded rod 430, driving the two sets of trapezoidal blocks 450 to move in the opposite direction, thereby driving the two sets of expansion mechanisms 500 Move in the opposite direction to expand the chest cavity. When the expansion mechanism 500 expands the chest cavity, the third spring 560 and the second spring 530 buffer the force of the pushing mechanism 400 driving the U-shaped plate 571 to push the human body, which is more flexible. The chest cavity will be stretched to the ground, and the opening will not be further torn due to too direct pushing force.

Although embodiments of the invention have been shown and described, these specific embodiments are merely illustrative of the invention and are not intended to limit the invention. The specific features, structures, materials or characteristics described may be used in any one or more The embodiments or examples are combined in a suitable manner. After reading this description, those skilled in the art can make modifications and substitutions to the embodiments as needed without inventive contribution without departing from the principles and purposes of the present invention. and modifications, etc., as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims (9)

1. An extracardiac thoracic opening device comprising a base (100), characterized in that: the automatic measuring device is characterized in that a positioning mechanism (200) is slidably connected to the outer wall of the base (100), a lifting mechanism (300) is fixedly connected to the top end of the positioning mechanism (200), a pushing mechanism (400) is fixedly connected to one side of the lifting mechanism (300), a supporting mechanism (500) is fixedly connected to the bottom end of the pushing mechanism (400), a moving mechanism (600) is meshed with the pushing mechanism (400), and a measuring scale (700) is fixedly connected to the bottom end of the moving mechanism (600);

the utility model provides a prop up mechanism (500) including L shape and prop up board (510), step down groove (520), second spring (530), sliding plate (540), slide bar (550), third spring (560) and prop up subassembly (570), the bottom fixedly connected with L shape of pushing mechanism (400) prop up board (510), L shape prop up and offer on board (510) step down groove (520), the inslot fixedly connected with second spring (530) of step down groove (520), the one end fixedly connected with sliding plate (540) of second spring (530), one side fixedly connected with sliding rod (550) of sliding plate (540), one end fixedly connected with of sliding rod (550) struts subassembly (570), one side fixedly connected with third spring (560) of L shape prop up board (510), step down groove (520), second spring (530), sliding plate (540), sliding rod (550) and third spring (560) all are provided with two sets of.

2. An extracardiac chest opening apparatus as claimed in claim 1 wherein: the utility model provides a strut subassembly (570) includes U-shaped board (571), extension board (572), second rack (573), second gear (574) and fixed axle (575), the one end fixedly connected with U-shaped board (571) of slide bar (550), the inner wall sliding connection of U-shaped board (571) has extension board (572), the top fixedly connected with second rack (573) of extension board (572), second rack (573) meshing has second gear (574), one side fixedly connected with fixed axle (575) of second gear (574), rotate between fixed axle (575) and U-shaped board (571) and the one end fixed connection of third spring (560).

3. An extracardiac chest opening apparatus as claimed in claim 1 wherein: the pushing mechanism (400) comprises a connecting block (410), a U-shaped block (420), a second threaded rod (430), a sliding groove (440), a trapezoid block (450), a pushing block (460), a clamping groove (470), a clamping strip (480) and a first rack (490), one side of the lifting mechanism (300) is fixedly connected with the connecting block (410), one side of the connecting block (410) is fixedly connected with the U-shaped block (420), the inner wall of the U-shaped block (420) is in threaded connection with the second threaded rod (430), the bottom end of the second threaded rod (430) is rotatably connected with the pushing block (460), the clamping groove (470) is formed in the pushing block (460), a clamping strip (480) is connected in a sliding manner in the clamping groove (470), one side of the clamping strip (480) is fixedly connected with the trapezoid block (450), one side of the U-shaped block (420) is fixedly connected with the first rack (490), the sliding groove (440), the clamping strip (470) and the two sides of the clamping strip (480) are symmetrically arranged on the clamping groove (480) and the two sides of the clamping strip (480) respectively, the bottom end of the trapezoid block (450) is fixedly connected with an L-shaped supporting plate (510), and the first rack (490) is meshed with a moving mechanism (600).

4. An extracardiac chest opening apparatus as claimed in claim 1 wherein: the positioning mechanism (200) comprises a moving block (210), a first threaded rod (220), a connecting ring (230), an L-shaped connecting rod (240), a pressing block (250), a positioning assembly (260), an I-shaped block (270), a first spring (280) and a baffle plate (290), wherein the moving block (210) is slidably connected to the outer wall of the base (100), the first threaded rod (220) is connected to the inner wall of the moving block (210) in a threaded manner, the connecting ring (230) is sleeved on the outer wall of the first threaded rod (220) in a rotating manner, one side of the connecting ring (230) is fixedly connected with the L-shaped connecting rod (240), the bottom end of the L-shaped connecting rod (240) is fixedly connected with a pressing block (250), the bottom end of the first threaded rod (220) is rotatably connected with the I-shaped block (270), the baffle plate (290) is fixedly connected with the first spring (280), the positioning assembly (260) is fixedly connected to the inner wall of the baffle plate (290), the first spring (280) is slidably connected to the pressing block (250), the first spring (280) is slidably connected to the baffle plate (250), the connecting rod (250) is fixedly connected to the connecting rod, the top end of the moving block (210) is fixedly connected with a lifting mechanism (300).

5. An extracardiac chest opening apparatus as recited in claim 4 in which: positioning assembly (260) include little cylinder (261), connecting plate (262), big cylinder (263), reference column (264) and movable groove (265), baffle (290) inner wall fixedly connected with reference column (264), the outer wall rotation of reference column (264) has cup jointed big cylinder (263), one side fixedly connected with connecting plate (262) of big cylinder (263), one side fixedly connected with little cylinder (261) of connecting plate (262), movable groove (265) have been seted up on briquetting (250), little cylinder (261) and connecting plate (262) all are provided with two sets of, two sets of little cylinder (261) and connecting plate (262) symmetry set up in the both sides of big cylinder (263), a set of little cylinder (261) and the inner wall block of I-shaped piece (270), and another set of block between little cylinder (261) and movable groove (265), L shape connecting rod (240) and positioning assembly (260) all are provided with two sets of, two sets of L shape connecting rod (240) and positioning assembly (260) set up in the both sides of I-shaped piece (260) symmetry.

6. An extracardiac chest opening apparatus as recited in claim 4 in which: elevating system (300) are including support column (310), lead screw (320), remove frame (330), mount (340) and gag lever post (350), two equal fixedly connected with support column (310) in top of movable block (210), one of them support column (310) inner wall rotation is connected with lead screw (320), the outer wall screw thread of lead screw (320) has cup jointed and has removed frame (330), one side fixedly connected with mount (340) of support column (310), two sets of support column (310) symmetry sets up the both ends at mount (340), remove sliding connection between frame (330) and support column (310), another support column (310) inner wall rotation is connected with gag lever post (350), sliding connection between movable frame (330) inner wall and gag lever post (350).

7. An extracardiac chest opening apparatus as set forth in claim 3 wherein: the mobile mechanism (600) comprises a first gear (610), a first connecting shaft (620), a first bevel gear (630), a second bevel gear (640), a second connecting shaft (650), a third gear (660), a mobile component (670) and a first fixed block (680), wherein the first gear (610) is meshed with the first rack (490), the first connecting shaft (620) is fixedly connected with the inner wall of the first gear (610), the first bevel gear (630) is fixedly sleeved on the outer wall of the first connecting shaft (620), the second bevel gear (640) is meshed with the first bevel gear (630), the second connecting shaft (650) is fixedly connected with the top end of the second bevel gear (640), the third gear (660) is fixedly sleeved on the outer wall of the second connecting shaft (650), the third gear (660) is meshed with the mobile component (670), the first fixed block (680) is rotatably connected with one end of the first connecting shaft (620), the top end of the first fixed block (680) is fixedly connected with the fixed frame (340), and the fixed frame (340) is rotatably connected with the fixed frame (650).

8. An extracardiac chest opening apparatus as recited in claim 7 in which: the mobile assembly (670) comprises a fourth gear (671), a first rotating column (672), an arc-shaped limiting groove (673), a first limiting shaft (674), a second rotating column (675), an L-shaped limiting groove (676), a second limiting shaft (677) and a second fixed block (678), the fourth gear (671) is meshed with the third gear (660), the bottom end of the fourth gear (671) is fixedly connected with the first rotating column (672), the first rotating column (672) is provided with the arc-shaped limiting groove (673), the first limiting shaft (674) is connected with the first limiting shaft (673) in a sliding manner, one end of the first limiting shaft (674) is fixedly connected with the second rotating column (675), the second rotating column (675) is provided with the L-shaped limiting groove (676), the second limiting shaft (677) is connected with the second rotating column in a sliding manner in the groove of the L-shaped limiting groove (676), the outer wall of the second limiting shaft (677) is fixedly connected with the first rotating column (673) in a sleeved mode, and the second rotating column (673) is fixedly connected with the top end of the second rotating column (675) in a sliding manner.

9. An extracardiac chest opening apparatus as recited in claim 4 in which: the base (100), the positioning mechanism (200) and the opening mechanism (500) are arranged in two groups, and the two groups of the base (100), the positioning mechanism (200) and the opening mechanism (500) are symmetrically arranged on two sides of the pushing mechanism (400).