Blood spatter prevention device for heart and great vessel surgery

Abstract

This invention relates to the field of surgical aids, specifically a device for preventing blood splashing during cardiac and major vascular surgery. It addresses the issues of ensuring stable pressure application and enabling rapid, automatic pressure application after puncture. The device includes an adjustment box with an adjustment groove on its side wall. A slider is slidably connected inside the adjustment groove, and a fixing plate is fixedly mounted on the side wall of the slider. A puncture box is slidably connected to the inner bottom wall of the adjustment box, and an adjustment plate is slidably connected to the inner wall of the puncture box. This invention achieves precise positioning, avoiding puncture deviations. Furthermore, after puncture, the puncture needle is automatically withdrawn and reset, automatically applying rapid pressure to the puncture site to prevent blood splashing. The fixing plate also prevents blood flow obstruction caused by prolonged fixation in the same position, preventing secondary injury to the patient.

Description

Technical Field

[0001] This invention relates to the field of surgical aids technology, specifically to a device for preventing blood splashing during cardiac and major vascular surgery. Background Technology

[0002] In cardiac and major vascular surgery, preventing blood splashing is a crucial step in ensuring the safety and success of the procedure. Various blood splash prevention devices exist in the current technology. These devices are designed to address the potential problem of blood splashing during surgery, thereby protecting medical staff and patients and improving surgical safety. Cardiac major vessels, such as the coronary arteries, have high internal blood pressure, and damage during surgery can easily cause large amounts of blood to splash. This splashing not only contaminates the surgical environment but may also increase the risk of infection for medical staff, and even affect the surgical field of vision and procedures, endangering the patient's life.

[0003] In traditional cardiac and major vascular surgeries, medical staff often rely on manual pressure or simple physical barriers to prevent blood splatter. However, these methods have many shortcomings, such as unstable pressure and limited barrier effectiveness, making it difficult to effectively cope with high-pressure blood splatter. In addition, after puncture, it is impossible to quickly apply pressure, leading to blood loss and affecting the operative field of vision.

[0004] Therefore, the present invention provides a blood splash prevention device for cardiac and major vascular surgery to solve the above-mentioned problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a blood splash prevention device for cardiac and major vascular surgery, which solves the problem of ensuring the stability of the pressure and being able to quickly and automatically apply pressure after puncture.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A blood splash prevention device for cardiac and major vascular surgery includes an adjustment box. An adjustment groove is formed on the side wall of the adjustment box, and a slider is slidably connected inside the adjustment groove. A fixing plate is fixedly installed on the side wall of the slider. A puncture box is slidably connected to the inner bottom wall of the adjustment box, and an adjustment plate is slidably connected to the inner wall of the puncture box. A pressing box is slidably connected to the inner bottom wall of the puncture box, and the pressing box is slidably connected to the adjustment plate. A pressing plate is fixedly connected to the pressing box via a connecting plate. A puncture needle is slidably connected inside the pressing box, and the pressing plate is drivenly connected to the puncture needle. A puncture hole is formed on the inner bottom wall of the pressing plate, and the puncture hole matches a pressing block. The pressing block is slidably connected inside the pressing plate. The device is equipped with a compression airbag, which is sealed and connected to the main airbag and is mutually conductive. A medical cotton ball is placed on the outer wall of the compression airbag. The device, through the adjustment box and puncture box, allows for easy adjustment of the puncture height. The adjustment groove ensures precise positioning during puncture, preventing deviations. After puncture, the puncture needle is automatically withdrawn and reset. The compression plate automatically and quickly presses on the puncture site, preventing blood splattering and allowing the compression airbag to inflate rapidly, providing continuous pressure. The fixing plate prevents prolonged fixation in the same position, avoiding blood flow obstruction and secondary injury to the patient.

[0008] Preferably, the inner wall of the puncture box has a sliding groove, and the adjusting plate is slidably connected inside the sliding groove. The inner top wall of the pressing box is fixedly connected to the output end of the puncture cylinder, and the puncture cylinder is fixedly installed on the inner top wall of the puncture box. The inner bottom wall of the puncture box has a slugging groove, and the pressing box is slidably connected inside the slugging groove. The inner top wall of the adjusting box is fixedly installed with an adjusting cylinder, and the output end of the adjusting cylinder is fixedly connected to the top of the puncture box. In use, the front and back positions of the adjusting box can be adjusted by sliding the slider to align the puncture box with the area to be punctured. By activating the adjusting cylinder, the puncture box is lowered to initially adjust its height for subsequent precise puncture. Then, the left and right positions of the pressing box can be adjusted by sliding the adjusting plate to slide the pressing box into the slugging groove. When the pressing box is aligned with the puncture site, the pressing box is moved downward by activating the puncture cylinder to achieve precise puncture.

[0009] Preferably, a T-shaped slider is fixedly installed on the outer wall of the adjusting plate, and a T-shaped groove is provided on the outer wall of the pressing box. The T-shaped slider is slidably connected inside the T-shaped groove. When the puncture cylinder is activated and the pressing box descends, the T-shaped slider slides inside the T-shaped groove. Through the setting of the T-shaped slider and the T-shaped groove, the pressing box of this device can be adjusted in the left and right and up and down positions to ensure its stability and prevent it from falling off.

[0010] Preferably, a reset gear is rotatably connected inside the pressing box. The reset gear meshes with a reset toothed plate, which is located inside the pressing box, connecting plate, and pressing plate. A reset spring is fixedly installed on the top of the reset toothed plate, and the top of the reset spring is fixedly connected to the inner top wall of the pressing box. An outer ring tooth is fixedly installed on the top of the puncture needle and on the outer wall of one end inside the pressing box. The outer ring tooth meshes with the reset gear. The bottom of the puncture needle and the reset toothed plate are located on the outer wall of the bottom of the pressing plate. A controller is installed on the top of the puncture needle, and the controller is electrically connected to the puncture cylinder. In the initial state, there is a gap between the top of the puncture needle and the inner bottom wall of the pressing box. The puncture needle and the reset toothed plate of this device are located outside the lower part of the pressing plate. When the puncture cylinder drives... When the pressure box descends, the pressure plate also descends slowly. After the puncture needle is inserted, the reset plate will press against the blood vessel, causing it to move upward and rotate the reset gear. The reset gear then resets the puncture needle. After the puncture needle is withdrawn, the pressure plate automatically applies pressure to the puncture site to stop bleeding and prevent splashing. When the puncture needle reaches its highest position, the controller will stop the puncture cylinder, achieving automatic puncture and automatic pressure to stop bleeding. This device, through the design of the puncture needle, allows for automatic reset after puncture. When the needle reaches its highest position, the puncture cylinder stops, allowing the pressure plate to press firmly against the puncture site. Simultaneously, the reset plate presses against both ends of the blood vessel at the puncture site, reducing blood supply and preventing splashing.

[0011] Preferably, a partition is fixedly installed inside the pressing plate, one end of which is connected to the pressing plate via a compression spring. A main airbag is installed inside the pressing plate, and the main airbag and the end of the pressing plate away from the compression spring abut against each other. In the initial state, under the action of the compression spring, the pressing plate always presses against the outer wall of the main airbag. When the main airbag releases gas, it can quickly inflate from the inside to the outside.

[0012] Preferably, there are two pressing blocks, and the two pressing blocks have the same structure. A supporting spring is fixedly installed on the outer wall of the pressing block, and the other end of the supporting spring is fixedly connected to the inner wall of the bottom of the pressing plate. After the two pressing blocks of this device are combined, they have the same shape as the puncture hole and can completely seal the puncture hole.

[0013] Preferably, a snap-fit ​​block is fixedly installed on the outer wall of the compression airbag, a sealing groove is formed on the outer wall of the snap-fit ​​block, and a sealing block is also fixedly installed on the outer wall of the snap-fit ​​block. The sealing groove and the sealing block are offset. A medical cotton ball is placed at the bottom of the snap-fit ​​block. In the initial state, the pressing block of this device is pressed by the abutment spring, so that one end of the pressing block is pressed against the outer wall of the puncture needle and is always in abutment state. When the puncture needle is punctured and reset during use, when the puncture hole is hollow, one end of the pressing block falls off and is limited, and the two pressing blocks are displaced relative to each other. At this time, the sealing block of one block will be inserted into the interior of the sealing groove of the other block, and the two snap-fit ​​blocks are mutually sealed and snapped together to achieve the sealing of the puncture hole. At the same time, the medical cotton swab on the outside stops bleeding and prevents splashing.

[0014] Preferably, the slider is rotatably connected to an adjusting screw, the adjusting screw is fixedly connected to the output end of a stepper motor, and the stepper motor is fixedly installed inside the slider;

[0015] The fixing plate is internally equipped with a first tensioning band and a second tensioning band, which are arranged adjacent to each other. The two side walls of the first tensioning band are respectively provided with a sliding plate and a sliding plate. The first and second tensioning bands have the same structure and are threadedly connected to the outer wall of the adjusting screw, with opposite threads. In its initial state, the device is first fixed to the patient by the first tensioning band. At this time, the sliding plates are in a state of compressing the first tensioning band. The first tensioning band is filled with gas, which expands outward when compressed, thus achieving the tightening function. A stepper motor allows for the replacement of the first and second tensioning bands, enabling alternating use. To avoid blood stasis caused by prolonged fixation of the skin with the same tensioning band, and to prevent secondary injury to the patient, the first and second tensioning bands will automatically change their fixing positions, avoiding prolonged pressure on the same location.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This device, with its adjustable box and puncture box, allows for easy adjustment of the puncture height. The adjustable groove ensures precise positioning during puncture, preventing deviations. After puncture, the puncture needle automatically withdraws and resets. The pressure plate automatically and quickly presses on the puncture site, preventing blood splattering and allowing the pressure bag to inflate rapidly, providing continuous pressure. The fixing plate prevents prolonged fixation in the same position, avoiding blood flow obstruction and preventing secondary injury to the patient.

[0018] 2. When using this device, the front and rear positions of the adjustment box can be adjusted by sliding the slider. Align the puncture box with the area to be punctured, and then lower the puncture box by activating the adjusting cylinder to initially adjust its height for subsequent precise puncture. Then, the left and right positions of the pressing box can be adjusted by sliding the adjusting plate to slide the pressing box into the groove. Once the pressing box is aligned with the puncture site, activate the puncture cylinder to move the pressing box downwards for precise puncture.

[0019] 3. The device, through the setting of the puncture needle, can automatically reset after puncture. When it is at the top of the reset, the puncture cylinder stops moving, and the pressing plate can fully and tightly abut against the puncture site. At the same time, the reset toothed plate abuts against both ends of the blood vessel at the puncture site, reducing blood supply and preventing splashing.

[0020] 4. In the initial state, the pressing block of this device is pressed by the abutting spring, so that one end of the pressing block is pressed against the outer wall of the puncture needle and is always in a pressing state. When the puncture needle is used and reset after puncture, when the puncture hole is hollow, one end of the pressing block falls off and is limited, and the two pressing blocks are displaced relative to each other. At this time, the sealing block of one block will be inserted into the interior of the sealing groove of the other block, and the two locking blocks will lock together to seal the puncture hole. At the same time, the medical cotton swab on the outside stops bleeding and prevents splashing.

[0021] 5. In its initial state, the device is first fixed to the patient's body by the first tightening band. At this time, the first and second sliding plates are in a state of compressing the first tightening band. The inside of the first tightening band is filled with gas, which expands outward when compressed, thereby achieving the tightening function. The first and second tightening bands can be replaced by a stepper motor, realizing the alternating use of the tightening bands. In order to avoid the phenomenon of poor blood circulation caused by the same tightening band fixing the skin for a long time, and to avoid secondary injury to the patient, the first and second tightening bands of this device will automatically change the fixing position to avoid the phenomenon of prolonged pressure fixing in the same position.

[0022] 6. When the puncture cylinder is activated and the pressing box descends, the T-shaped slider slides inside the T-shaped groove. The T-shaped slider and T-shaped groove allow the pressing box of this device to be adjusted left and right as well as up and down, ensuring its stability and preventing it from falling off. Attached Figure Description

[0023] Figure 1 This is a frontal three-dimensional schematic diagram of the present invention.

[0024] Figure 2 This is a schematic cross-sectional view of the regulating box of the present invention.

[0025] Figure 3 This is a schematic diagram of the cross-section of the puncture box of the present invention.

[0026] Figure 4 This is a three-dimensional schematic diagram of the adjusting plate and pressing box of the present invention.

[0027] Figure 5 This is a schematic diagram of the side view of the pressing box of the present invention.

[0028] Figure 6 This is a schematic diagram of a partial cross-section of the pressing box of the present invention.

[0029] Figure 7 This is a schematic cross-sectional view of the pressing box and connecting plate of the present invention.

[0030] Figure 8 This is a schematic cross-sectional view of the pressing plate of the present invention.

[0031] Figure 9 This is a top view of the inside of the pressing plate of the present invention.

[0032] Figure 10 This is a three-dimensional schematic diagram of the snap-fit ​​block of the present invention.

[0033] Figure 11 This is a schematic cross-sectional view of the slider and fixing plate of the present invention.

[0034] Figure 12 This is a schematic diagram of the outer wall of the adjusting screw of the present invention.

[0035] In the diagram: 1. Regulating box;

[0036] 2. Fixing board; 201. Fastening strap one; 202. Fastening strap two; 203. Skateboard one; 204. Skateboard two;

[0037] 3. Puncture hole; 301. Pressing block; 302. Pressing airbag; 303. Support spring; 304. Sealing groove; 305. Sealing block; 306. Snap-fit ​​block;

[0038] 4. Slider; 401. Adjusting screw; 402. Stepper motor;

[0039] 5. Puncture box; 501. Slide groove; 502. Leakage groove; 503. Adjusting cylinder;

[0040] 6. Adjusting plate; 601. T-shaped slider;

[0041] 7. Pressing box; 701. Puncture cylinder; 702. T-slot; 703. Return gear; 704. Outer ring gear; 705. Return gear plate; 706. Return spring;

[0042] 8. Connecting plate;

[0043] 9. Pressing plate; 901. Partition plate; 902. Compression spring; 903. Compression plate;

[0044] 10. Puncture needle; 11. Main air bladder; 12. Adjustment groove. Detailed Implementation

[0045] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0046] A device for preventing blood splashing during cardiac and major vascular surgery, as shown in the attached document. Figure 1-3 As shown, the device includes an adjustment box 1, an adjustment groove 12 on the side wall of the adjustment box 1, a slider 4 slidably connected inside the adjustment groove 12, a fixing plate 2 fixedly installed on the side wall of the slider 4, a puncture box 5 slidably connected to the inner bottom wall of the adjustment box 1, an adjustment plate 6 slidably connected to the inner wall of the puncture box 5, and a pressing box 7 slidably connected to the inner bottom wall of the puncture box 5. The pressing box 7 is slidably connected to the adjustment plate 6, as shown in the attached diagram. Figure 6 As shown, the pressing box 7 is fixedly connected to the pressing plate 9 via the connecting plate 8, and the puncture needle 10 is slidably connected inside the pressing box 7, as shown in the attached diagram. Figure 8-10As shown, the pressing plate 9 is driven to connect with the puncture needle 10. A puncture hole 3 is provided on the inner bottom wall of the pressing plate 9. The puncture hole 3 matches the pressing block 301, which is slidably connected inside the pressing plate 9. A pressing airbag 302 is provided inside the pressing block 301. The pressing airbag 302 is sealed to and communicates with the main airbag 11. A medical cotton ball is provided on the outer wall of the pressing airbag 302. This device, through the adjustment box 1 and the puncture box 5, allows for easy adjustment of the puncture height. Simultaneously, the adjustment groove 12... The device is designed to achieve precise positioning during puncture, preventing deviations. After puncture, the puncture needle 10 is automatically withdrawn and reset. The pressing plate 9 automatically and quickly presses the puncture site to prevent blood splattering, allowing the airbag 302 to inflate rapidly and provide continuous pressure to the puncture site. Furthermore, the fixing plate 2 prevents blood flow obstruction caused by prolonged fixation in the same position, thus preventing secondary injury to the patient.

[0047] As attached Figure 3-5 As shown, a sliding groove 501 is provided on the inner side wall of the puncture box 5, and an adjusting plate 6 is slidably connected inside the sliding groove 501. The output end of the puncture cylinder 701 is fixedly connected to the inner top wall of the pressing box 7. The puncture cylinder 701 is fixedly installed on the inner top wall of the puncture box 5. A sluice groove 502 is provided on the inner bottom wall of the puncture box 5, and the pressing box 7 is slidably connected inside the sluice groove 502. An adjusting cylinder 503 is fixedly installed on the inner top wall of the adjusting box 1, and the output end of the adjusting cylinder 503 is fixedly connected to the top of the puncture box 5. When using this device, it can be adjusted through... By sliding the slider 4, the front and rear positions of the adjustment box 1 are adjusted, and the puncture box 5 is aligned with the area to be punctured. By activating the adjustment cylinder 503, the puncture box 5 is lowered, achieving an initial adjustment of the height of the puncture box 5, which facilitates subsequent precise puncture. Then, the left and right positions of the pressing box 7 can be adjusted by sliding the adjustment plate 6, so that the pressing box 7 slides into the inside of the slot 502. When the pressing box 7 is aligned with the puncture site, the puncture cylinder 701 is activated, causing the pressing box 7 to move downward, achieving precise puncture.

[0048] As attached Figure 4 As shown, a T-shaped slider 601 is fixedly installed on the outer wall of the adjusting plate 6, and a T-shaped groove 702 is provided on the outer wall of the pressing box 7. The T-shaped slider 601 is slidably connected inside the T-shaped groove 702. When the puncture cylinder 701 is activated, the pressing box 7 descends. At this time, the T-shaped slider 601 slides inside the T-shaped groove 702. Through the setting of the T-shaped slider 601 and the T-shaped groove 702, the pressing box 7 of this device can be adjusted to the left and right and up and down, ensuring its stability and preventing it from falling off.

[0049] As attached Figure 6-7As shown, a reset gear 703 is rotatably connected inside the pressing box 7. The reset gear 703 meshes with a reset toothed plate 705, which is located inside the pressing box 7, connecting plate 8, and pressing plate 9. A reset spring 706 is fixedly installed on the top of the reset toothed plate 705, and the top of the reset spring 706 is fixedly connected to the inner top wall of the pressing box 7. An outer ring tooth 704 is fixedly installed on the top of the puncture needle 10 and on the outer wall of one end inside the pressing box 7. The outer ring tooth 704 meshes with the reset gear 703. The bottom of the puncture needle 10 and the reset toothed plate 705 are located on the outer wall of the bottom of the pressing plate 9. A controller is installed on the top of the puncture needle 10, and the controller is electrically connected to the puncture cylinder 701. In the initial state, there is a gap between the top of the puncture needle 10 and the inner bottom wall of the pressing box 7. The puncture needle 10 and the reset toothed plate 705 are located outside the lower part of the pressing plate 9. When the puncture cylinder 701 drives the pressing box... 7. During the downward displacement, the pressing plate 9 will also slowly descend. After the puncture needle 10 punctures, the reset toothed plate 705 will abut against the blood vessel, thereby achieving upward displacement and driving the reset gear 703 to rotate. The reset gear 703 drives the puncture needle 10 to reset. The puncture needle 10 is then pulled out, and the pressing plate 9 automatically presses the puncture site to stop bleeding and prevent splashing. When the puncture needle 10 moves upward to the top, the controller will stop the puncture cylinder 701, realizing automatic puncture and automatic pressure to stop bleeding. Through the setting of the puncture needle 10, this device can automatically reset after puncture. When resetting to the top, the puncture cylinder 701 stops, and the pressing plate 9 can fully and tightly abut against the puncture site. At the same time, the reset toothed plate 705 abuts against both ends of the blood vessel at the puncture site, reducing blood supply and preventing splashing.

[0050] As attached Figure 8 As shown, a partition 901 is fixedly installed inside the pressing plate 9. One end of the partition 901 is connected to the pressing plate 903 through a compression spring 902. A main airbag 11 is installed inside the pressing plate 9. The main airbag 11 and the end of the pressing plate 903 away from the compression spring 902 abut against each other. In the initial state, the pressing plate 903 is pressed against the outer wall of the main airbag 11 by the compression spring 902. When the main airbag 11 releases gas, it can quickly inflate from the inside of the main airbag to the outside.

[0051] As attached Figure 9 As shown, there are two pressing blocks 301. The two pressing blocks 301 have the same structure. A supporting spring 303 is fixedly installed on the outer wall of the pressing block 301. The other end of the supporting spring 303 is fixedly connected to the inner wall of the bottom of the pressing plate 9. After the two pressing blocks 301 of this device are combined, they have the same shape as the puncture hole 3 and can completely seal the puncture hole 3.

[0052] As attached Figure 10 As shown, a snap-fit ​​block 306 is fixedly installed on the outer wall of the compression airbag 302. A sealing groove 304 is formed on the outer wall of the snap-fit ​​block 306. A sealing block 305 is also fixedly installed on the outer wall of the snap-fit ​​block 306. The sealing groove 304 and the sealing block 305 are offset. A medical cotton ball is placed at the bottom of the snap-fit ​​block 306. In the initial state, the pressing block 301 of this device is pressed by the abutment spring 303, so that one end of the pressing block 301 is against the outer wall of the puncture needle 10. When the device is in a top-down state, after the puncture needle 10 is used for puncture and then reset, the puncture hole 3 is hollow. At this time, one end of the pressing block 301 falls off and is limited, and the two pressing blocks 301 move relative to each other. At this time, the sealing block 305 of one block will be inserted into the interior of the sealing groove 304 of the other block, and the two locking blocks 306 will lock together to seal the puncture hole 3. At the same time, the medical cotton swab on the outside stops bleeding and prevents splashing.

[0053] As attached Figure 11-12 As shown, an adjusting screw 401 is rotatably connected inside the slider 4. The adjusting screw 401 is fixedly connected to the output end of the stepper motor 402, and the stepper motor 402 is fixedly installed inside the slider 4.

[0054] The fixing plate 2 houses a first tensioning strap 201 and a second tensioning strap 202, which are arranged adjacent to each other. The two side walls of the first tensioning strap 201 are respectively provided with a sliding plate 203 and a sliding plate 204. The first tensioning strap 201 and the second tensioning strap 202 have identical structures. The sliding plates 203 and 204 are threadedly connected to the outer wall of the adjusting screw 401, with opposite threads. In its initial state, the device is first fixed to the patient via the first tensioning strap 201. At this time, the sliding plates 203 and 204 are connected to the adjusting screw 401. Plate 204 is in the state of compressing the first tension band 201. The tension band 201 is filled with gas, which expands outward when compressed, thereby achieving the tightening function. The stepper motor 402 can replace the tension band 201 and the second tension band 202, realizing the alternating use of the tension bands. In order to avoid the phenomenon of poor blood circulation caused by the same tension band fixing the skin for a long time, and to avoid secondary injury to the patient, the tension band 201 and the second tension band 202 of this device will automatically change the fixing position to avoid the phenomenon of pressing and fixing the same position for a long time.

[0055] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A blood splash prevention device for cardiac and major vascular surgery, comprising an adjustment box (1), characterized in that, An adjustment groove (12) is provided on the side wall of the adjustment box (1). A slider (4) is slidably connected inside the adjustment groove (12). A fixing plate (2) is fixedly installed on the side wall of the slider (4). A puncture box (5) is slidably connected to the inner bottom wall of the adjustment box (1). An adjustment plate (6) is slidably connected to the inner wall of the puncture box (5). A pressing box (7) is slidably connected to the inner bottom wall of the puncture box (5). The pressing box (7) is slidably connected to the adjustment plate (6). A pressing plate (9) is fixedly connected to the pressing box (7) through a connecting plate (8). The internal slidable connection of the pressure box (7) is a puncture needle (10). The pressure plate (9) is driven to connect with the puncture needle (10). A puncture hole (3) is provided on the inner bottom wall of the pressure plate (9). The puncture hole (3) matches the pressure block (301). The pressure block (301) is slidably connected to the inside of the pressure plate (9). A pressure airbag (302) is provided inside the pressure block (301). The pressure airbag (302) is sealed to the main airbag (11) and communicates with it. A medical cotton ball is provided on the outer wall of the pressure airbag (302).

2. The blood splash prevention device for cardiac and major vascular surgery according to claim 1, characterized in that, The puncture box (5) has a sliding groove (501) on its inner sidewall. The adjusting plate (6) is slidably connected inside the sliding groove (501). The pressing box (7) is fixedly connected to the output end of the puncture cylinder (701) on its inner top wall. The puncture cylinder (701) is fixedly installed on the inner top wall of the puncture box (5). The puncture box (5) has a slugging groove (502) on its inner bottom wall. The pressing box (7) is slidably connected inside the slugging groove (502). The adjusting box (1) has an adjusting cylinder (503) fixedly installed on its inner top wall. The output end of the adjusting cylinder (503) is fixedly connected to the top of the puncture box (5).

3. The blood splash prevention device for cardiac and major vascular surgery according to claim 2, characterized in that, A T-shaped slider (601) is fixedly installed on the outer wall of the adjusting plate (6), and a T-shaped groove (702) is opened on the outer wall of the pressing box (7). The T-shaped slider (601) is slidably connected inside the T-shaped groove (702).

4. The blood splash prevention device for cardiac and major vascular surgery according to claim 3, characterized in that, The internal part of the pressing box (7) is rotatably connected to a reset gear (703), which meshes with a reset tooth plate (705). The reset tooth plate (705) is located inside the pressing box (7), the connecting plate (8), and the pressing plate (9). A reset spring (706) is fixedly installed on the top of the reset tooth plate (705). The top of the reset spring (706) is fixedly connected to the inner top wall of the pressing box (7). An outer ring tooth (704) is fixedly installed on the top of the puncture needle (10) and on the outer wall of one end inside the pressing box (7). The outer ring tooth (704) meshes with the reset gear (703). The bottom of the puncture needle (10) and the reset tooth plate (705) are located on the outer wall of the bottom of the pressing plate (9). A controller is installed on the top of the puncture needle (10). The controller is electrically connected to the puncture cylinder (701).

5. A blood splash prevention device for cardiac and major vascular surgery according to claim 4, characterized in that, A partition (901) is fixedly installed inside the pressing plate (9). One end of the partition (901) is connected to the pressing plate (903) through a compression spring (902). A main airbag (11) is installed inside the pressing plate (9). The main airbag (11) and the end of the pressing plate (903) away from the compression spring (902) abut against each other.

6. A blood splash prevention device for cardiac and major vascular surgery according to claim 5, characterized in that, There are two pressing blocks (301), and the two pressing blocks (301) have the same structure. A pressing spring (303) is fixedly installed on the outer wall of the pressing block (301), and the other end of the pressing spring (303) is fixedly connected to the inner wall of the bottom of the pressing plate (9).

7. A blood splash prevention device for cardiac and major vascular surgery according to claim 6, characterized in that, A snap-fit ​​block (306) is fixedly installed on the outer wall of the compression airbag (302). A sealing groove (304) is provided on the outer wall of the snap-fit ​​block (306). A sealing block (305) is also fixedly installed on the outer wall of the snap-fit ​​block (306). The sealing groove (304) and the sealing block (305) are offset. A medical cotton ball is provided at the bottom of the snap-fit ​​block (306).

8. A blood splash prevention device for cardiac and major vascular surgery according to claim 7, characterized in that, The slider (4) is rotatably connected to an adjusting screw (401), which is fixedly connected to the output end of a stepper motor (402). The stepper motor (402) is fixedly installed inside the slider (4). The fixing plate (2) is equipped with a first tensioning band (201) and a second tensioning band (202). The first tensioning band (201) and the second tensioning band (202) are arranged adjacent to each other. The two side walls of the first tensioning band (201) are respectively provided with a first sliding plate (203) and a second sliding plate (204). The first tensioning band (201) and the second tensioning band (202) have the same structure. The first sliding plate (203) and the second sliding plate (204) are threadedly connected to the outer wall of the adjusting screw (401). The threads of the first sliding plate (203) and the second sliding plate (204) are opposite.

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