Auxiliary instrument for heart and great vessel surgery

Abstract

The application belongs to the technical field of surgical instruments, and discloses an auxiliary instrument for heart and large blood vessel surgery, which comprises a heating pad body, a rapid heating cavity, a surrounding cavity and an air inlet cavity are arranged in the heating pad body, further comprises: a separation assembly arranged in the heating pad body; an expansion assembly arranged in the surrounding cavity and the air inlet cavity; wherein the separation assembly comprises a separation interlayer fixedly connected in the surrounding cavity and a separation air bag arranged in the air inlet cavity, a plurality of air guide pipes are fixedly connected in the middle of the separation interlayer in a linear distribution; the rapid heating cavity and the separation assembly are matched to rapidly heat the heating pad body, and the heating pad body is unfolded, hot air is delivered into the rapid heating cavity to rapidly heat the top of the heating pad body, and the patient is preheated before lying down.

Description

Technical Field

[0001] This invention belongs to the field of surgical instrument technology, specifically an auxiliary instrument for cardiac and major vascular surgery. Background Technology

[0002] Heart surgery is a complex and high-risk medical procedure. Its success depends not only on the surgeon's skill level but also on the support of a variety of advanced assistive devices. These devices play an important role in different stages of the surgery, from preoperative preparation to intraoperative procedures, and then to postoperative monitoring and recovery, covering a wide range of areas. Among these, heating pads are needed to keep the patient warm to prevent hypothermia.

[0003] Existing heating pads typically use surgical mattresses with internal heating wires to provide heating for patients undergoing surgery. However, these electric heating pads usually only contact the back of the patient's skin, resulting in poor overall heating of the body. Therefore, an auxiliary device for cardiac and major vascular surgery is proposed. Summary of the Invention

[0004] To address the safety hazards and limited heating area issues of the electrothermal heating pads mentioned in the background art, this invention provides an auxiliary device for cardiac and major vascular surgery.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for cardiac and major vascular surgery, comprising a heating pad body, wherein the heating pad body has a rapid heating chamber, an expansion and surrounding chamber, and an air inlet chamber, and further comprising:

[0006] A separating component is disposed inside the heating pad body;

[0007] An expansion assembly is disposed inside the expansion enclosure cavity and the air intake cavity;

[0008] The separation assembly includes a separation interlayer fixedly connected inside the expansion chamber and a separation airbag disposed inside the air intake chamber. Multiple air guide tubes are linearly distributed and fixedly connected in the middle of the separation interlayer.

[0009] The expansion assembly includes an expansion conduit and a baffle plate fixedly connected inside the expansion chamber. One end of the expansion conduit has an air inlet distributed in a ring shape, and a sealing plug is fixedly connected inside the air inlet chamber.

[0010] Preferably, the rapid heating chamber, the expansion enclosure chamber, and the air inlet chamber are arranged sequentially inside the heating pad body. The heating pad body has an air inlet and an air outlet at both ends. The rapid heating chamber and the air inlet chamber are connected to the air inlet. The expansion enclosure chamber is connected to the air outlet. The air inlet and the air outlet are connected to an air-filling heating device through an air supply pipe.

[0011] Preferably, the partition layer is disposed inside the expansion cavity and is symmetrically distributed inside the expansion cavity. The partition layer divides the expansion cavity into multiple cavities. The air guide tube penetrates the partition between the expansion cavity and the air inlet cavity and communicates with the interior of the partition airbag.

[0012] Preferably, a blocking plug is provided at the top of the air duct, and a tension strap is fixedly connected to the top of the blocking plug. The end of the tension strap away from the blocking plug is facing the center. The expansion conduit is fixedly connected to the heating pad body. A first elastic tension strap is fixedly connected inside the separating airbag. The two ends of the first elastic tension strap are fixedly connected to the center of the separating airbag and the heating pad body, respectively.

[0013] Preferably, when the tension band is compressed, it will pull the blocking plug upward, causing the air duct to release its seal. At this time, the hot airflow inside the rapid heating chamber enters the interior of the separating airbag through the air duct, causing the separating airbag to expand and separate the air intake chamber.

[0014] Preferably, the expansion conduit is linearly distributed and fixedly connected inside the expansion surrounding cavity. The end of the expansion conduit away from the rapid heating cavity is shaped like a converging trumpet. At the same time, the blocking plate is connected to the air inlet cavity. The air outlet is located at the end of the expansion conduit near the rapid heating cavity. The sealing plug corresponds to the position of the expansion conduit and is fixedly connected to the inner wall of the air inlet cavity on the side away from the expansion surrounding cavity.

[0015] Preferably, the blocking plate is located on the side of the expansion cavity near the air inlet. Both the upper and lower sides of the blocking plate are fixedly connected to the partition inside the heating pad body to seal and block the side of the expansion cavity near the air inlet. The upper side of the blocking plate is fixedly connected to the heating pad body through a connecting strap.

[0016] Preferably, a second elastic band is fixedly connected to both sides of the blocking plate, wherein both ends of the second elastic band located inside the expansion cavity are fixedly connected to the blocking plate, and one end of the second elastic band located inside the air inlet cavity is fixedly connected to the blocking plate, while the end of the second elastic band away from the blocking plate is fixedly connected to the heating pad body.

[0017] Preferably, when the heating pad body is supplied with hot air through the air inlet, the air inlet of the air inlet cavity is blocked by the blocking plate due to the tension of the second elastic band, so that the hot air directly enters the interior of the rapid heating cavity, causing the rapid heating cavity to be filled and expanded by the hot air. After the rapid heating cavity is inflated, the traction belt located at the top of the rapid heating cavity will pull the second elastic band upward and flip it, so that the air inlet of the air inlet cavity is opened.

[0018] Preferably, the bottom of the expansion conduit is glued and fixed to the sealing plug. When the expansion conduit is disconnected from the sealing plug, hot air is delivered from the bottom through the air inlet chamber into the interior of the expansion conduit, causing the expansion conduit to expand and surround the human body.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention facilitates rapid heating of the heating pad body by combining structures such as a rapid heating chamber and a partition component. The heating pad body can be unfolded and the hot air flow is delivered into the rapid heating chamber to quickly heat the top of the heating pad body, so that the patient is preheated before lying down, thereby improving the patient's comfort. At the same time, the expansion of the rapid heating chamber can easily unfold the heating pad body.

[0021] This invention facilitates the separation of the expansion chamber and the air inlet chamber by setting up a partition component and an air inlet chamber, so that the internal space of the heating pad body can be used according to the width of the patient's body. By dividing the air inlet chamber by the expansion of the partition airbag, the air inlet chamber is divided into cavities corresponding to the expansion chamber, thereby saving air delivery space and allowing the hot air to flow faster to maintain temperature stability.

[0022] This invention facilitates the expansion of the expansion conduit and the expansion surrounding cavity by setting up structures such as the expansion surrounding cavity and expansion components. This allows the heating pad body to surround the patient, making the patient appear to be trapped in the heating pad body. By expanding the separating airbag inside the air inlet cavity, the expansion conduit and the sealing plug are lifted and separated. Then, air can be injected into the expansion surrounding cavity through the air inlet cavity, causing the heating pad body to expand around the human body and surround the human body. By increasing the contact area, the human body is kept warm. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 This is a cross-sectional view of the heating pad body of the present invention;

[0025] Figure 3 This is a side sectional view of the present invention;

[0026] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 5 This is a partial sectional view of the front of the present invention;

[0028] Figure 6 This is an enlarged cross-sectional view of the interlayer of the present invention;

[0029] Figure 7This is a cross-sectional view of the expansion component of the present invention;

[0030] Figure 8 This is a schematic diagram of the operating direction of the present invention.

[0031] In the diagram: 1. Heating pad body; 2. Rapid heating chamber; 3. Expansion enclosure chamber; 4. Air inlet chamber; 5. Separating assembly; 501. Separating interlayer; 502. Air duct; 503. Blocking plug; 504. Pulling strap; 505. Separating airbag; 506. First elastic pull strap; 6. Expansion assembly; 601. Expansion conduit; 602. Air outlet; 603. Sealing plug; 604. Blocking plate; 605. Second elastic pull strap; 7. Air inlet; 8. Air outlet; 9. Inflatable heating device. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 8 As shown, the present invention provides an auxiliary device for cardiac and major vascular surgery, including a heating pad body 1, wherein the heating pad body 1 has a rapid heating chamber 2, an expansion and surrounding chamber 3, and an air inlet chamber 4 inside, and further includes:

[0034] Separator component 5 is disposed inside the heating pad body 1;

[0035] Expansion assembly 6 is disposed inside the expansion enclosure cavity 3 and the air intake cavity 4;

[0036] The separation component 5 includes a separation interlayer 501 fixedly connected inside the expansion surrounding cavity 3 and a separation airbag 505 disposed inside the air intake cavity 4. Multiple air guide tubes 502 are linearly distributed and fixedly connected in the middle of the separation interlayer 501.

[0037] The expansion assembly 6 includes an expansion conduit 601 and a baffle 604 fixedly connected inside the expansion surrounding cavity 3. One end of the expansion conduit 601 has an air inlet 602 arranged in a ring shape, and a sealing plug 603 is fixedly connected inside the air inlet cavity 4.

[0038] Using the above scheme: The inflatable heating device 9 delivers hot airflow from the air inlet 7 into the rapid heating chamber 2 of the heating pad body 1 via a pipe, causing the rapid heating chamber 2 to expand and unfold the heating pad body 1. Simultaneously, the expansion of the heating pad body 1 pulls on the blocking plate 604, releasing the seal at the air inlet of the air inlet 4, allowing hot air to enter the air inlet 4. Then, the patient lies on the heating pad body 1, flattening the middle of the heating pad body 1. At the same time, the pulling strap 504 is compressed, pulling on the blocking plug 503, releasing the seal on the air duct 502, allowing hot air from the rapid heating chamber 2 to enter the separating airbag 505. Inside, the dividing airbag 505 expands to divide the air inlet chamber 4, and then continues to supply hot air into the heating pad body 1, so that the hot air is delivered to the rapid heating chamber 2 and the air inlet chamber 4 respectively. The hot air entering the rapid heating chamber 2 continues to enter the pull belt 504, so that the pull belt 504 continues to expand and squeezes the sealing plug 603 and the expansion tube 601 open, so that the expansion tube 601 contacts the seal, allowing the hot air entering the air inlet chamber 4 to enter the expansion surrounding chamber 3, so that the expansion surrounding chamber 3 squeezes the heating pad body 1 to expand around the human body, so as to surround the human body, and then the hot air can be delivered normally to keep the human body warm.

[0039] like Figures 2 to 8 As shown, the rapid heating chamber 2, the expansion surrounding chamber 3, and the air inlet chamber 4 are arranged sequentially inside the heating pad body 1. The heating pad body 1 has an air inlet 7 and an air outlet 8 at both ends. The rapid heating chamber 2 and the air inlet chamber 4 are connected to the air inlet 7, and the expansion surrounding chamber 3 is connected to the air outlet 8. The air inlet 7 and the air outlet 8 are connected to an air-filling heating device 9 through an air supply pipe.

[0040] The above solution involves dividing the interior of the heating pad body 1 into three cavities: a rapid heating cavity 2, an expansion and enclosing cavity 3, and an air inlet cavity 4. The rapid heating cavity 2 can quickly heat the top of the heating pad body 1, preheating the patient before they lie down. At the same time, the hot airflow inside the rapid heating cavity 2 can easily expand the heating pad body 1. By setting the air inlet 7 to deliver hot airflow into the rapid heating cavity 2, the heating pad body 1 can be preheated when it is ready for use, while preventing the heating pad body 1 from fully expanding.

[0041] like Figures 2 to 6As shown, the partition layer 501 is disposed inside the expansion cavity 3 and is symmetrically distributed inside the expansion cavity 3. The partition layer 501 divides the expansion cavity 3 into multiple cavities. The air guide tube 502 penetrates the partition between the expansion cavity 3 and the air inlet cavity 4 and connects to the interior of the partition airbag 505. A blocking plug 503 is provided at the top of the air guide tube 502. A tension band 504 is fixedly connected to the top of the blocking plug 503. The end of the tension band 504 away from the blocking plug 503 faces the center and is fixedly connected to the heating pad body 1. A first elastic tension band 506 is fixedly connected inside the partition airbag 505. The two ends of the first elastic tension band 506 are fixedly connected to the center of the partition airbag 505 and the heating pad body 1, respectively.

[0042] The above scheme is adopted as follows: By setting a partition layer 501, the inner cavity of the expansion surrounding cavity 3 is divided by the partition layer 501, so that when the expansion surrounding cavity 3 is inflated, the space required for inflation can be reduced, and the space required for airflow is reduced. At the same time, the expansion surrounding cavity 3 of appropriate area can be used according to the patient's body width. The setting of the air guide tube 502 allows the patient to lie on the heating pad body 1 and press down the pull belt 504 with the patient's weight. At this time, the rapid heating cavity 2 is in an inflated state, so the pull belt 504 will pull the blocking plug 503, causing the air guide tube 502 to be unsealed and inflated from the rapid heating cavity 2 into the partition airbag 505. At this time, the partition airbag 505 expands and divides the inner cavity of the air inlet cavity 4, so that the inner cavity of the air inlet cavity 4 is divided into cavities corresponding to the expansion surrounding cavity 3.

[0043] The first elastic strap 506 is provided so that when the airbag 505 is not inflated, it is pulled up and folded by the rebound of the first elastic strap 506, thereby releasing the separation of the air intake chamber 4.

[0044] like Figures 2 to 6 As shown, when the tension band 504 is squeezed, it will pull the blocking plug 503 upward, causing the air duct 502 to release the seal. At this time, the hot air flow inside the rapid heating chamber 2 enters the interior of the separating airbag 505 through the air duct 502, causing the separating airbag 505 to expand and separate the air intake chamber 4.

[0045] Using the above scheme: When the tension band 504 is compressed, it will pull the blocking plug 503 upward, causing the air duct 502 to be unsealed. At this time, the hot air flow inside the rapid heating chamber 2 enters the interior of the separating airbag 505 through the air duct 502, causing the separating airbag 505 to expand and separate the air intake chamber 4. At the same time, the expanded separating airbag 505 will lift and separate the adjacent sealing plug 603 and expansion duct 601, releasing the seal on the expansion duct 601, allowing the air intake chamber 4 to be inflated into the expansion chamber 3 through the expansion duct 601.

[0046] like Figure 4, Figure 5 , Figure 6 and Figure 7 As shown, the expansion conduit 601 is linearly distributed and fixedly connected inside the expansion surrounding cavity 3. The end of the expansion conduit 601 away from the rapid heating cavity 2 is shaped like a constricted trumpet, and the expansion conduit 601 is connected to the air inlet cavity 4. The air outlet 602 is located at the end of the expansion conduit 601 close to the rapid heating cavity 2. The sealing plug 603 corresponds to the position of the expansion conduit 601 and is fixedly connected to the inner wall of the air inlet cavity 4 on the side away from the expansion surrounding cavity 3.

[0047] The above scheme is adopted: by setting an expansion conduit 601, the expansion conduit 601 can expand and at the same time inflate the expansion surrounding cavity 3, so that the expansion surrounding cavity 3 expands around the human body and surrounds the surface of the human body, so that the back and sides of the patient's body surface are surrounded to keep the patient warm. The air outlet 602 opened at the top of the expansion conduit 601 can facilitate the delivery of hot air into the expansion surrounding cavity 3.

[0048] The sealing plug 603 inside the air inlet chamber 4 is used to seal the bottom of the expansion tube 601. The side of the sealing plug 603 near the expansion tube 601 has a certain degree of stickiness, which can keep the air inlet chamber 4 sealed when air is introduced into it, so that the expansion surrounding chamber 3 is temporarily not introduced into it. After the patient lies down, the pull strap 504 is pressed down to make the separating airbag 505 expand and open inside the air inlet chamber 4. The expansion tube 601 and the sealing plug 603 are lifted and separated at the same time, and then air can be introduced into the expansion surrounding chamber 3, so that the heating pad body 1 expands around the human body to surround the human body and keep it warm.

[0049] like Figure 4 As shown, the blocking plate 604 is located on the side of the expansion cavity 3 near the air inlet 7. Both the upper and lower sides of the blocking plate 604 are fixedly connected to the partition inside the heating pad body 1. At the same time, the blocking plate 604 seals and blocks the side of the expansion cavity 3 near the air inlet 7. The upper side of the blocking plate 604 is fixedly connected to the heating pad body 1 through a connecting strap.

[0050] The above solution involves the setting of the blocking plate 604, which can seal the expansion cavity 3, so that the expansion cavity 3 does not expand when the heating pad body 1 is inflated. At the same time, the second elastic pull strip 605 set inside it can pull the blocking plate 604 into a folded state when it is not unfolded, and it is biased towards the air inlet 4 to block the air inlet of the air inlet 4. The connecting strip set on the upper side of the blocking plate 604 can pull the blocking plate 604 upward after the heating pad body 1 is inflated in the rapid heating cavity 2, thereby releasing the blockage of the air inlet of the air inlet 4.

[0051] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a second elastic band 605 is fixedly connected to both sides of the blocking plate 604. The two ends of the second elastic band 605 located inside the expansion cavity 3 are fixedly connected to the blocking plate 604. One end of the second elastic band 605 located inside the air inlet cavity 4 is fixedly connected to the blocking plate 604, while the end of the second elastic band 605 away from the blocking plate 604 is fixedly connected to the heating pad body 1. When the heating pad body 1 is supplied with hot air by the air inlet 7, the air inlet of the air inlet cavity 4 is blocked by the blocking plate 604 due to the tension of the second elastic band 605, so that the hot air directly enters the rapid heating cavity 2 and the rapid heating cavity 2 is filled and expanded by the hot air. After the rapid heating cavity 2 is inflated, the traction belt located at the top of the rapid heating cavity 2 will pull the second elastic band 605 upward and flip it, so that the air inlet of the air inlet cavity 4 is opened.

[0052] By adopting the above scheme, the setting of the blocking plate 604 and the second elastic band 605 can temporarily block the air inlet of the air inlet cavity 4. When the expansion surrounding cavity 3 is not expanded, the gap between the rapid heating cavity 2 and the air inlet cavity 4 is small. The blocking plate 604, which is pulled by the second elastic band 605, is folded and pulled to abut against the blocking protrusion of the air inlet of the air inlet cavity 4, so that the airflow is guided into the interior of the rapid heating cavity 2.

[0053] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the bottom of the expansion conduit 601 is glued and fixed to the sealing plug 603. When the expansion conduit 601 is disconnected from the sealing plug 603, hot air is delivered from the bottom through the air inlet chamber 4 into the interior of the expansion conduit 601, causing the expansion conduit 601 to expand and surround the human body.

[0054] The above scheme is adopted: by setting up an inflation heating device 9, the inflation heating device 9 delivers hot air to the inside of the heating pad body 1, which is delivered into the heating pad body 1 from the air inlet 7, and then the air is discharged out through the air outlet 8 to form a cycle.

[0055] The working principle and usage process of this invention are as follows: When in use, the air-inflating heating device 9 first delivers hot airflow into the heating pad body 1 through the air inlet 7 via a pipe. At this time, because the blocking plate 604 blocks the air inlet of the air inlet 4, the hot air directly enters the rapid heating chamber 2, causing the rapid heating chamber 2 to expand and unfold the heating pad body 1. At the same time, as the heating pad body 1 expands, it pulls the blocking plate 604, causing the air inlet of the air inlet 4 to be unsealed, and then the hot air can enter the air inlet 4. After that, the patient lies on the heating pad body 1.

[0056] When the patient lies on the heating pad body 1, the patient will flatten the middle of the heating pad body 1. At the same time, the pulling strap 504 is squeezed, and the pulling strap 504 pulls the blocking plug 503, causing the air duct 502 to be unsealed. This allows the hot air inside the rapid heating chamber 2 to enter the separating airbag 505, causing the separating airbag 505 to expand and separate the air intake chamber 4. Then, hot air continues to be delivered into the heating pad body 1, so that the hot air is delivered to both the rapid heating chamber 2 and the air intake chamber 4. The hot air entering the rapid heating chamber 2 continues to enter the pulling strap 504, causing the pulling strap 504 to continue to expand and squeeze the sealing plug 603 and the expansion tube 601 open, so that the expansion tube 601 contacts the seal. This allows the hot air entering the air intake chamber 4 to enter the expansion surrounding chamber 3, causing the expansion surrounding chamber 3 to compress the heating pad body 1 and expand around the human body to surround the human body. Then, hot air can be delivered normally to keep the human body warm.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for cardiac and major vascular surgery, comprising a heating pad body (1), wherein the heating pad body (1) has a rapid heating chamber (2), an expansion and surrounding chamber (3), and an air inlet chamber (4) inside, characterized in that: Also includes: A separating component (5) is disposed inside the heating pad body (1); An expansion assembly (6) is disposed inside the expansion enclosure cavity (3) and the air intake cavity (4); The separation component (5) includes a separation interlayer (501) fixedly connected inside the expansion surrounding cavity (3) and a separation airbag (505) disposed inside the air intake cavity (4). The separation interlayer (501) has multiple air guide tubes (502) fixedly connected in a linear distribution in the middle. The expansion assembly (6) includes an expansion conduit (601) and a baffle plate (604) fixedly connected inside the expansion enclosure cavity (3). One end of the expansion conduit (601) is provided with an air inlet (602) arranged in a ring. A sealing plug (603) is fixedly connected inside the air inlet cavity (4). The top of the air duct (502) is provided with a blocking plug (503), and a pulling strap (504) is fixedly connected to the top of the blocking plug (503). The end of the pulling strap (504) away from the blocking plug (503) is facing the center and is fixedly connected to the heating pad body (1). The inside of the separating airbag (505) is fixedly connected with a first elastic strap (506), and the two ends of the first elastic strap (506) are fixedly connected to the center of the separating airbag (505) and the heating pad body (1) respectively. The expansion conduit (601) is linearly distributed and fixedly connected inside the expansion surrounding cavity (3). The end of the expansion conduit (601) away from the rapid heating cavity (2) is shaped like a constricted trumpet and is connected to the air inlet cavity (4). The air outlet (602) is located at the end of the expansion conduit (601) close to the rapid heating cavity (2). The sealing plug (603) is positioned corresponding to the expansion conduit (601) and is fixedly connected to the inner wall of the air inlet cavity (4) away from the expansion surrounding cavity (3). The blocking plate (604) is located on the side of the expansion surrounding cavity (3) near the air inlet (7). The upper and lower sides of the blocking plate (604) are fixedly connected to the partition inside the heating pad body (1). At the same time, the blocking plate (604) seals and blocks the side of the expansion surrounding cavity (3) near the air inlet (7). The upper side of the blocking plate (604) is fixedly connected to the heating pad body (1) through a connecting strap. The second elastic band (605) is fixedly connected to both sides of the blocking plate (604). The two ends of the second elastic band (605) located inside the expansion surrounding cavity (3) are fixedly connected to the blocking plate (604). One end of the second elastic band (605) located inside the air inlet cavity (4) is fixedly connected to the blocking plate (604), and the end of the second elastic band (605) away from the blocking plate (604) is fixedly connected to the heating pad body (1).

2. The auxiliary device for cardiac and major vascular surgery according to claim 1, characterized in that: The rapid heating chamber (2), the expansion surrounding chamber (3) and the air inlet chamber (4) are arranged sequentially inside the heating pad body (1). The heating pad body (1) has an air inlet (7) and an air outlet (8) at both ends. The rapid heating chamber (2) and the air inlet chamber (4) are connected to the air inlet (7). The expansion surrounding chamber (3) is connected to the air outlet (8). The air inlet (7) and the air outlet (8) are connected to an air-filling heating device (9) through an air supply pipe.

3. The auxiliary device for cardiac and major vascular surgery according to claim 2, characterized in that: The partition layer (501) is disposed inside the expansion surrounding cavity (3) and is symmetrically distributed inside the expansion surrounding cavity (3). The partition layer (501) divides the interior of the expansion surrounding cavity (3) into multiple cavities. The air guide tube (502) penetrates the partition between the expansion surrounding cavity (3) and the air inlet cavity (4) and communicates with the interior of the partition airbag (505).

4. The auxiliary device for cardiac and major vascular surgery according to claim 3, characterized in that: When the tension band (504) is squeezed, it will pull the blocking plug (503) upward, causing the air duct (502) to be unsealed. At this time, the hot air flow inside the rapid heating chamber (2) enters the interior of the separating airbag (505) through the air duct (502), causing the separating airbag (505) to expand and separate the air inlet chamber (4).

5. The auxiliary device for cardiac and major vascular surgery according to claim 4, characterized in that: When the heating pad body (1) is supplied with hot air through the air inlet (7), the air inlet of the air inlet cavity (4) is blocked by the baffle plate (604) due to the tension of the second elastic band (605), so that the hot air directly enters the interior of the rapid heating cavity (2), causing the rapid heating cavity (2) to be filled and expanded by the hot air. After the rapid heating cavity (2) is filled and expanded, the traction belt located at the top of the rapid heating cavity (2) will pull the second elastic band (605) to flip upward, so that the air inlet of the air inlet cavity (4) is opened.

6. The auxiliary device for cardiac and major vascular surgery according to claim 5, characterized in that: The bottom of the expansion conduit (601) is attached and fixed to the sealing plug (603). When the expansion conduit (601) is disconnected from the sealing plug (603), hot air is delivered from the bottom through the air inlet chamber (4) into the interior of the expansion conduit (601), causing the expansion conduit (601) to expand and surround the human body.

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