Hemostatic pad for preventing bleeding of puncture point in bone marrow aspiration biopsy

Abstract

The hemostatic pad comprises an air bag assembly, bandage assemblies, inflation assemblies and a breathable layer, the bandage assemblies are arranged on the two sides of the lower portion of the air bag assembly, the inflation assemblies are arranged on the two sides of the air bag assembly, the inflation assemblies are communicated with the interior of the air bag assembly, and the breathable layer is arranged in the air bag assembly. The breathable layer is arranged above the air bag assembly; the air bag assembly comprises a height adjusting air bag assembly, a contact area adjusting air bag assembly and an air bag cushion, the height adjusting air bag assembly and the contact area adjusting air bag assembly are arranged on the air bag cushion, the contact area adjusting air bag assembly is annular, and the height adjusting air bag assembly is arranged in the contact area adjusting air bag assembly; the bandage assembly comprises a first bandage and a second bandage, the first bandage is connected with one end of the air bag cushion, and the second bandage is connected with the other end of the air bag cushion. The air bag is used for conducting compression hemostasis on a bleeding point, the size of the air bag can be adjusted to be suitable for patients of different body types, and storage is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a hemostatic pad for preventing bleeding at the puncture site during bone marrow biopsy. Background Technology

[0002] Because bone marrow aspiration and biopsy are invasive procedures, serious complications such as pain, bleeding, and infection are prone to occur after the procedure. Therefore, strengthening postoperative care for bone marrow aspiration and biopsy, controlling and reducing the occurrence of complications, increasing patient comfort, and improving compliance with treatment and care have become important goals of hematology nursing.

[0003] After bone marrow aspiration and biopsy, manual pressure is required for hemostasis. However, prolonged manual pressure can lead to insufficient or uneven pressure, and the pressure may shift. Furthermore, maintaining a passive position for extended periods after these procedures can cause muscle tension and discomfort. Therefore, a pressure pad is needed. Adding a pad to the lower back provides support and psychological comfort, ensuring effective hemostasis while increasing comfort and alleviating discomfort. According to the physics formula for pressure, P=F / S (where P is the pressure per unit area), a smaller area results in greater pressure per unit area and better hemostasis. However, maximizing pressure can reduce comfort.

[0004] Existing hemostatic pads are of uneven size, making them unsuitable for patients of different body types, and they also have poor stability and comfort. Utility Model Content

[0005] In view of this, the present invention aims to provide a hemostatic pad to prevent bleeding at the puncture site during bone marrow aspiration biopsy, in order to solve the problems of uneven size of existing hemostatic pads, which cannot be applied to patients of different body types, and have poor stability and comfort.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A hemostatic pad for preventing bleeding at the puncture site during bone marrow biopsy includes an airbag assembly, a strap assembly, an inflation assembly, and a breathable layer. The strap assembly is located on both sides below the airbag assembly, the inflation assembly is located on both sides of the airbag assembly and is in communication with the interior of the airbag assembly, and the breathable layer is located on top of the airbag assembly.

[0008] The breathable layer is used to contact the patient's skin. On the one hand, it avoids the airbag from directly contacting the skin and causing a lack of breathability. On the other hand, the breathable layer can increase comfort.

[0009] Preferably, the breathable layer is made of towel.

[0010] The airbag assembly includes an adjustable height airbag assembly, an adjustable contact area airbag assembly, and an airbag cushion. The adjustable height airbag assembly and the adjustable contact area airbag assembly are disposed on the airbag cushion. The adjustable contact area airbag assembly is annular, and the adjustable height airbag assembly is disposed inside the adjustable contact area airbag assembly.

[0011] The strap assembly includes a first strap and a second strap, with the first strap connected to one end of the airbag cushion and the second strap connected to the other end of the airbag cushion.

[0012] Furthermore, the height-adjustable airbag assembly includes a first airbag, a second airbag, and a third airbag arranged sequentially from bottom to top, with the bottom of the first airbag positioned on the airbag pad.

[0013] The first airbag and the second airbag are connected by a first one-way ventilation component;

[0014] The second and third airbags are connected by a second one-way ventilation assembly.

[0015] Furthermore, the first one-way ventilation component includes a first connecting pipe, a first blocking plate, and several first springs. One end of the first connecting pipe is located above the first airbag, and the other end of the first connecting pipe extends into the interior of the second airbag. The first blocking plate is located at the end of the first connecting pipe inside the second airbag. Several first springs are provided between the first blocking plate and the inner wall of the second airbag, and the several first springs are evenly arranged around the periphery of the first connecting pipe.

[0016] The second one-way ventilation assembly includes a second connecting pipe, a second blocking plate, and several second springs. One end of the second connecting pipe is located above the second airbag, and the other end of the second connecting pipe extends into the interior of the third airbag. The second blocking plate is located at the end of the second connecting pipe inside the third airbag. Several second springs are provided between the second blocking plate and the inner wall of the third airbag, and the several second springs are evenly arranged around the second connecting pipe.

[0017] Furthermore, the adjustable contact area airbag assembly includes a first annular airbag and a second annular airbag arranged sequentially from the inside to the outside. The first annular airbag and the second annular airbag are arranged on the airbag pad, and the first annular airbag and the second annular airbag are arranged outside the first airbag, the second airbag and the third airbag.

[0018] The first annular airbag and the second annular airbag are connected by a third one-way ventilation assembly.

[0019] Furthermore, the third one-way ventilation assembly includes a third connecting pipe, a third blocking plate, and several third springs. One end of the third connecting pipe is located on the side of the first annular airbag close to the second annular airbag, and the other end of the third connecting pipe extends into the interior of the second annular airbag. The third blocking plate is located at the end of the third connecting pipe located inside the second annular airbag. Several third springs are provided between the third blocking plate and the inner wall of the second annular airbag, and the several third springs are evenly arranged around the periphery of the third connecting pipe.

[0020] The first spring causes the first blocking plate to press against the first connecting pipe, preventing airflow between the first and second airbags. Only when the pressure inside the first airbag reaches a certain level does the air pressure overcome the elasticity of the first spring, causing the first blocking plate to separate from the first connecting pipe, thus connecting the first and second airbags. Similarly, when the pressure inside the second airbag reaches a certain level, the air pressure overcomes the elasticity of the second spring, causing the second blocking plate to separate from the second connecting pipe, thus connecting the second and third airbags. Likewise, the second annular airbag will only be inflated after the first annular airbag reaches a certain pressure.

[0021] When the size of the airbag assembly needs to be small, a small amount of gas is introduced into the airbag assembly so that only the first annular airbag and the first airbag are filled with air. When the size of the airbag assembly needs to be large, a relatively larger amount of gas can be introduced into the airbag assembly so that the second annular airbag, the second airbag, and the third airbag are filled with air.

[0022] The height-adjustable airbag assembly can adjust the height of the airbag assembly, that is, adjust the overall thickness of the hemostatic pad. The contact area-adjustable airbag assembly can adjust the length and width of the airbag assembly, that is, adjust the contact area between the hemostatic pad and the patient. According to the different body shapes of the patients, the size of the hemostatic pad can be adjusted by using the airbag to ensure that the hemostatic pad can apply a certain pressure to the bleeding point to achieve the hemostatic effect while also ensuring comfort.

[0023] Preferably, the length of the airbag assembly is 24-30cm, the width is 12-15cm, and the height is 7-10cm.

[0024] Furthermore, the inflation assembly includes a height airbag inflation assembly and a contact area airbag inflation assembly. The height airbag inflation assembly is connected to the interior of the first airbag, and the contact area airbag inflation assembly is connected to the interior of the first annular airbag.

[0025] The height airbag inflation assembly includes a first inflation air blower and a first inflation tube. One end of the first inflation air blower is provided with a first one-way air inlet valve, and the other end of the first inflation air blower is provided with a first one-way air outlet valve. The outer side of the first one-way air outlet valve is connected to the first inflation tube, and the end of the first inflation tube away from the first one-way air outlet valve is connected to the first airbag.

[0026] The contact area airbag inflation assembly includes a second inflation air blower and a second inflation tube. One end of the second inflation air blower is provided with a second one-way air inlet valve, and the other end of the second inflation air blower is provided with a second one-way air outlet valve. The outer side of the second one-way air outlet valve is connected to the second inflation tube, and the end of the second inflation tube away from the second one-way air outlet valve is connected to the first annular airbag.

[0027] When the air inflator is pressed, external air enters the air inflator through the one-way air inlet valve and then exits through the one-way air outlet valve, entering the first airbag and the first annular airbag along the inflation tube, thereby inflating the airbag assembly. The first one-way air inlet valve, the first one-way air outlet valve, the second one-way air inlet valve, and the second one-way air outlet valve are all common valve structures in the prior art.

[0028] Furthermore, the end of the first strap away from the airbag cushion has a hook-and-loop fastener surface, and the end of the second strap away from the airbag cushion has a hook-and-loop fastener barbed surface corresponding to the hook-and-loop fastener surface. The first and second straps work together to fix the airbag assembly at the bleeding point, preventing patient movement from shifting the hemostatic pad and causing displacement of the pressure point, thus affecting the hemostatic effect.

[0029] Furthermore, the first inflation air blower extends to the outside of the first strap through the first inflation tube, and the second inflation air blower extends to the outside of the second strap through the second inflation tube.

[0030] Furthermore, the first strap is provided with a first through hole through which the first inflation tube can pass, and the second strap is provided with a second through hole through which the second inflation tube can pass.

[0031] The first strap has a first inflatable air-blown storage bag, and the second strap has a second inflatable air-blown storage bag.

[0032] The first inflatable air-blown storage bag is used to store the first inflatable air-blown air, and the second inflatable air-blown storage bag is used to store the second inflatable air-blown air. After inflation, the air-blown air can be placed in the storage bag, which increases the integrity of the hemostatic pad and does not affect the patient.

[0033] Furthermore, a first exhaust pipe is provided on one side of the third airbag, and the first exhaust pipe extends to the outside of the second annular airbag;

[0034] A second exhaust pipe is provided on one side of the second annular airbag, and the second exhaust pipe extends to the outside of the second annular airbag;

[0035] Both the first and second exhaust pipes are equipped with sealing plugs.

[0036] After the hemostatic pad is used, the air inside the airbag assembly can be expelled through the first and second exhaust pipes for easy storage.

[0037] Compared with existing technologies, the hemostatic pad for preventing bleeding at the puncture site during bone marrow biopsy as described in this utility model has the following advantages:

[0038] (1) The height-adjustable airbag assembly described in this utility model can adjust the height of the airbag assembly, that is, adjust the overall thickness of the hemostatic pad. The contact area-adjustable airbag assembly can adjust the length and width of the airbag assembly, that is, adjust the contact area between the hemostatic pad and the patient. According to the different body types of the patients, the size of the hemostatic pad can be adjusted by using the airbag. While ensuring that the hemostatic pad can apply a certain pressure to the bleeding point and achieve the hemostatic effect, it can also ensure comfort.

[0039] (2) The present invention uses a strap assembly to fix the airbag assembly at the bleeding point, preventing the hemostatic pad from moving due to patient movement, which would cause the pressure position to shift and affect the hemostatic effect;

[0040] (3) This utility model uses an airbag to compress the bleeding point to stop bleeding. On the one hand, the size of the airbag can be adjusted to suit patients of different body types. On the other hand, after the hemostatic pad is used, the air in the airbag is discharged, making it easy to store. Attached Figure Description

[0041] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0042] Figure 1 This is a schematic diagram of a hemostatic pad for preventing bleeding at the puncture site during bone marrow biopsy, as described in an embodiment of this utility model.

[0043] Figure 2 This is a side view of the airbag assembly of a hemostatic pad for preventing bleeding at the puncture site during bone marrow biopsy, as described in an embodiment of this utility model.

[0044] Figure 3 This is a top view schematic diagram of an airbag assembly for preventing bleeding at the puncture site during bone marrow biopsy, as described in an embodiment of this utility model.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Breathable layer; 2. Airbag cushion; 3. First strap; 4. Second strap; 5. First airbag; 6. Second airbag; 7. Third airbag; 8. First connecting tube; 9. First blocking plate; 10. First spring; 11. Second connecting tube; 12. Second blocking plate; 13. Second spring; 14. First annular airbag; 15. Second annular airbag; 16. Third connecting tube; 17. Third blocking plate; 18. Third spring; 19. First inflation air blower; 20. First inflation tube; 21. Second inflation air blower; 22. Second inflation tube; 23. First inflation air blower storage bag; 24. First exhaust pipe; 25. Second exhaust pipe. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0050] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] like Figures 1 to 3As shown, a hemostatic pad for preventing bleeding at the puncture site during bone marrow biopsy includes an airbag assembly, a strap assembly, an inflation assembly, and a breathable layer 1. The strap assembly is located on both sides below the airbag assembly, the inflation assembly is located on both sides of the airbag assembly and is connected to the interior of the airbag assembly, and the breathable layer 1 is located on top of the airbag assembly.

[0052] The breathable layer 1 is used to contact the patient's skin. On the one hand, it avoids the airbag from directly contacting the skin and causing it to be non-breathable. On the other hand, the breathable layer 1 can increase comfort.

[0053] Preferably, the breathable layer 1 is made of a towel.

[0054] The airbag assembly includes an adjustable height airbag assembly, an adjustable contact area airbag assembly, and an airbag pad 2. The adjustable height airbag assembly and the adjustable contact area airbag assembly are disposed on the airbag pad 2. The adjustable contact area airbag assembly is annular, and the adjustable height airbag assembly is disposed inside the adjustable contact area airbag assembly.

[0055] The strap assembly includes a first strap 3 and a second strap 4. The first strap 3 is connected to one end of the airbag cushion 2, and the second strap 4 is connected to the other end of the airbag cushion 2.

[0056] The height-adjustable airbag assembly includes a first airbag 5, a second airbag 6, and a third airbag 7 arranged sequentially from bottom to top, with the bottom of the first airbag 5 positioned on the airbag pad 2.

[0057] The first airbag 5 and the second airbag 6 are connected by a first one-way ventilation component.

[0058] The second airbag 6 and the third airbag 7 are connected by a second one-way ventilation assembly.

[0059] The first one-way ventilation assembly includes a first connecting pipe 8, a first blocking plate 9, and a plurality of first springs 10. One end of the first connecting pipe 8 is located above the first airbag 5, and the other end of the first connecting pipe 8 extends into the interior of the second airbag 6. The first blocking plate 9 is located at the end of the first connecting pipe 8 located inside the second airbag 6. A plurality of first springs 10 are provided between the first blocking plate 9 and the inner wall of the second airbag 6, and the plurality of first springs 10 are evenly arranged around the periphery of the first connecting pipe 8.

[0060] The second one-way ventilation assembly includes a second connecting pipe 11, a second blocking plate 12, and a plurality of second springs 13. One end of the second connecting pipe 11 is positioned above the second airbag 6, and the other end of the second connecting pipe 11 extends into the interior of the third airbag 7. The second blocking plate 12 is positioned at the end of the second connecting pipe 11 located inside the third airbag 7. A plurality of second springs 13 are provided between the second blocking plate 12 and the inner wall of the third airbag 7, and the plurality of second springs 13 are evenly arranged around the second connecting pipe 11.

[0061] The adjustable contact area airbag assembly includes a first annular airbag 14 and a second annular airbag 15 arranged sequentially from the inside to the outside. The first annular airbag 14 and the second annular airbag 15 are arranged on the airbag pad 2, and the first annular airbag 14 and the second annular airbag 15 are arranged outside the first airbag 5, the second airbag 6, and the third airbag 7.

[0062] The first annular airbag 14 and the second annular airbag 15 are connected by a third one-way ventilation assembly.

[0063] The third one-way ventilation assembly includes a third connecting pipe 16, a third blocking plate 17, and several third springs 18. One end of the third connecting pipe 16 is located on the side of the first annular airbag 14 near the second annular airbag 15, and the other end of the third connecting pipe 16 extends into the interior of the second annular airbag 15. The third blocking plate 17 is located at the end of the third connecting pipe 16 located inside the second annular airbag 15. Several third springs 18 are provided between the third blocking plate 17 and the inner wall of the second annular airbag 15, and the several third springs 18 are evenly arranged around the periphery of the third connecting pipe 16.

[0064] The first spring 10 presses the first blocking plate 9 against the first connecting pipe 8, preventing airflow between the first airbag 5 and the second airbag 6. Only when the pressure inside the first airbag 5 reaches a certain level does the air pressure overcome the elasticity of the first spring 10, causing the first blocking plate 9 to separate from the first connecting pipe 8, thus connecting the first airbag 5 and the second airbag 6. When the pressure inside the second airbag 6 reaches a certain level, the air pressure overcomes the elasticity of the second spring 13, causing the second blocking plate 12 to separate from the second connecting pipe 11, thus connecting the second airbag 6 and the third airbag 7. Similarly, the second annular airbag 15 will only be inflated after the first annular airbag 14 reaches a certain pressure.

[0065] When the size of the airbag assembly needs to be small, a small amount of gas is introduced into the airbag assembly so that only the first annular airbag 14 and the first airbag 5 are filled with air. When the size of the airbag assembly needs to be large, a relatively larger amount of gas can be introduced into the airbag assembly so that the second annular airbag 15, the second airbag 6, and the third airbag 7 are filled with air.

[0066] The height-adjustable airbag assembly can adjust the height of the airbag assembly, that is, adjust the overall thickness of the hemostatic pad. The contact area-adjustable airbag assembly can adjust the length and width of the airbag assembly, that is, adjust the contact area between the hemostatic pad and the patient. According to the different body shapes of the patients, the size of the hemostatic pad can be adjusted by using the airbag to ensure that the hemostatic pad can apply a certain pressure to the bleeding point to achieve the hemostatic effect while also ensuring comfort.

[0067] Preferably, the airbag assembly has a length of 24cm, a width of 12cm, and a height of 7cm.

[0068] The inflation assembly includes a height airbag inflation assembly and a contact area airbag inflation assembly. The height airbag inflation assembly is connected to the interior of the first airbag 5, and the contact area airbag inflation assembly is connected to the interior of the first annular airbag 14.

[0069] The height airbag inflation assembly includes a first inflation air blower 19 and a first inflation tube 20. One end of the first inflation air blower 19 is provided with a first one-way air inlet valve, and the other end of the first inflation air blower 19 is provided with a first one-way air outlet valve. The outer side of the first one-way air outlet valve is connected to the first inflation tube 20, and the end of the first inflation tube 20 away from the first one-way air outlet valve is connected to the first airbag 5.

[0070] The contact area airbag inflation assembly includes a second inflation air blower 21 and a second inflation tube 22. One end of the second inflation air blower 21 is provided with a second one-way air inlet valve, and the other end of the second inflation air blower 21 is provided with a second one-way air outlet valve. The outer side of the second one-way air outlet valve is connected to the second inflation tube 22, and the end of the second inflation tube 22 away from the second one-way air outlet valve is connected to the first annular airbag 14.

[0071] When the air inflator is pressed, external air enters the air inflator through the one-way air inlet valve and then exits through the one-way air outlet valve, entering the first airbag 5 and the first annular airbag 14 along the inflation tube, thereby inflating the airbag assembly. The first one-way air inlet valve, the first one-way air outlet valve, the second one-way air inlet valve, and the second one-way air outlet valve are all common valve structures in the prior art.

[0072] The first strap 3 has a hook-and-loop fastener at the end furthest from the airbag cushion 2, and the second strap 4 has a hook-and-loop fastener barbed surface at the end furthest from the airbag cushion 2. The first strap 3 and the second strap 4 work together to fix the airbag assembly at the bleeding point, preventing patient movement from shifting the hemostatic pad and thus causing displacement of the pressure point, which would affect the hemostatic effect.

[0073] The first inflation air blower 19 extends to the outside of the first strap 3 through the first inflation tube 20, and the second inflation air blower 21 extends to the outside of the second strap 4 through the second inflation tube 22.

[0074] The first strap 3 is provided with a first through hole through which the first inflation tube 20 can pass, and the second strap 4 is provided with a second through hole through which the second inflation tube 22 can pass.

[0075] The first strap 3 is provided with a first inflatable air-blown storage bag 23, and the second strap 4 is provided with a second inflatable air-blown storage bag.

[0076] The first inflatable air-blowing storage bag 23 is used to store the first inflatable air-blowing 19, and the second inflatable air-blowing storage bag is used to store the second inflatable air-blowing 21. After inflation, the air-blowing can be placed in the storage bag, which increases the integrity of the hemostatic pad on the one hand, and does not affect the patient on the other hand.

[0077] The third airbag 7 is provided with a first exhaust pipe 24 on one side, and the first exhaust pipe 24 extends to the outside of the second annular airbag 15.

[0078] A second exhaust pipe 25 is provided on one side of the second annular airbag 15, and the second exhaust pipe 25 extends to the outside of the second annular airbag 15.

[0079] Both the first exhaust pipe 24 and the second exhaust pipe 25 are equipped with sealing plugs.

[0080] After the hemostatic pad is used, the air inside the airbag assembly can be discharged through the first exhaust pipe 24 and the second exhaust pipe 25 for easy storage.

[0081] In practice, the patient lies flat, and the airbag assembly is placed on the bleeding point in the lower back. The first inflatable air inflator 19 and the second inflatable air inflator 21 are pressed to fill the first airbag 5 and the first annular airbag 14 with air. The pressure intensity and comfort level determine whether to continue introducing air. If the pressure is too high or the hemostatic pad is too low, the first inflatable air inflator 19 and the second inflatable air inflator 21 are pressed further to fill the second airbag 6 and the second annular airbag 15 with air. The third airbag 7 is then introduced as needed. After adjusting the size of the airbag assembly according to the inflation volume, the first strap 3 and the second strap 4 are fastened with Velcro to fix the airbag assembly at the bleeding point, applying pressure to stop the bleeding. The first inflatable air inflator 19 can be placed in the first inflatable air inflator storage bag 23, and the second inflatable air inflator 21 can be placed in the second inflatable air inflator storage bag.

[0082] After the hemostatic pad is used, the air inside the airbag assembly can be discharged through the first exhaust pipe 24 and the second exhaust pipe 25 for storage.

[0083] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy, characterized in that: It includes an airbag assembly, a strap assembly, an inflation assembly, and a breathable layer (1). The strap assembly is located on both sides below the airbag assembly, the inflation assembly is located on both sides of the airbag assembly and is connected to the interior of the airbag assembly, and the breathable layer (1) is located on top of the airbag assembly. The airbag assembly includes an adjustable height airbag assembly, an adjustable contact area airbag assembly, and an airbag pad (2). The adjustable height airbag assembly and the adjustable contact area airbag assembly are disposed on the airbag pad (2). The adjustable contact area airbag assembly is annular, and the adjustable height airbag assembly is disposed inside the adjustable contact area airbag assembly. The strap assembly includes a first strap (3) and a second strap (4). The first strap (3) is connected to one end of the airbag cushion (2), and the second strap (4) is connected to the other end of the airbag cushion (2).

2. The hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 1, characterized in that: The height-adjustable airbag assembly includes a first airbag (5), a second airbag (6), and a third airbag (7) arranged sequentially from bottom to top, with the bottom of the first airbag (5) positioned on the airbag pad (2); The first airbag (5) and the second airbag (6) are connected by a first one-way ventilation assembly; The second airbag (6) and the third airbag (7) are connected by a second one-way ventilation assembly.

3. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 2, characterized in that: The first one-way ventilation assembly includes a first connecting pipe (8), a first blocking plate (9), and a plurality of first springs (10). One end of the first connecting pipe (8) is located above the first airbag (5), and the other end of the first connecting pipe (8) extends into the interior of the second airbag (6). The first blocking plate (9) is located at one end of the first connecting pipe (8) inside the second airbag (6). A plurality of first springs (10) are provided between the first blocking plate (9) and the inner wall of the second airbag (6), and the plurality of first springs (10) are evenly arranged around the first connecting pipe (8). The second one-way ventilation assembly includes a second connecting pipe (11), a second blocking plate (12), and several second springs (13). One end of the second connecting pipe (11) is located above the second airbag (6), and the other end of the second connecting pipe (11) extends into the interior of the third airbag (7). The second blocking plate (12) is located at one end of the second connecting pipe (11) inside the third airbag (7). Several second springs (13) are provided between the second blocking plate (12) and the inner wall of the third airbag (7), and the several second springs (13) are evenly arranged around the second connecting pipe (11).

4. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 1, characterized in that: The adjustable contact area airbag assembly includes a first annular airbag (14) and a second annular airbag (15) arranged sequentially from the inside to the outside. The first annular airbag (14) and the second annular airbag (15) are arranged on the airbag pad (2), and the first annular airbag (14) and the second annular airbag (15) are arranged outside the first airbag (5), the second airbag (6), and the third airbag (7). The first annular airbag (14) and the second annular airbag (15) are connected by a third one-way ventilation assembly.

5. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 4, characterized in that: The third one-way ventilation assembly includes a third connecting pipe (16), a third blocking plate (17), and several third springs (18). One end of the third connecting pipe (16) is located on the side of the first annular airbag (14) near the second annular airbag (15), and the other end of the third connecting pipe (16) extends into the interior of the second annular airbag (15). The third blocking plate (17) is located at one end of the third connecting pipe (16) inside the second annular airbag (15). Several third springs (18) are provided between the third blocking plate (17) and the inner wall of the second annular airbag (15), and the several third springs (18) are evenly arranged around the third connecting pipe (16).

6. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 1, characterized in that: The inflation assembly includes a height airbag inflation assembly and a contact area airbag inflation assembly. The height airbag inflation assembly is connected to the interior of the first airbag (5), and the contact area airbag inflation assembly is connected to the interior of the first annular airbag (14). The height airbag inflation assembly includes a first inflation air blower (19) and a first inflation tube (20). One end of the first inflation air blower (19) is provided with a first one-way air inlet valve, and the other end of the first inflation air blower (19) is provided with a first one-way exhaust valve. The outer side of the first one-way exhaust valve is connected to the first inflation tube (20), and the end of the first inflation tube (20) away from the first one-way exhaust valve is connected to the first airbag (5). The contact area airbag inflation assembly includes a second inflation air blower (21) and a second inflation tube (22). One end of the second inflation air blower (21) is provided with a second one-way air inlet valve, and the other end of the second inflation air blower (21) is provided with a second one-way exhaust valve. The outer side of the second one-way exhaust valve is connected to the second inflation tube (22), and the end of the second inflation tube (22) away from the second one-way exhaust valve is connected to the first annular airbag (14).

7. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 1, characterized in that: The first strap (3) has a hook and loop fastener at one end away from the airbag cushion (2), and the second strap (4) has a hook and loop fastener at one end away from the airbag cushion (2) that corresponds to the hook and loop fastener.

8. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 6, characterized in that: The first inflation blower (19) extends to the outside of the first strap (3) through the first inflation tube (20), and the second inflation blower (21) extends to the outside of the second strap (4) through the second inflation tube (22).

9. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 1, characterized in that: The first strap (3) is provided with a first through hole through which the first inflation tube (20) can pass, and the second strap (4) is provided with a second through hole through which the second inflation tube (22) can pass; The first strap (3) is provided with a first inflatable air-blown storage bag (23), and the second strap (4) is provided with a second inflatable air-blown storage bag.

10. A hemostatic pad for preventing bleeding at the puncture site during bone marrow aspiration biopsy according to claim 2, characterized in that: The third airbag (7) has a first exhaust pipe (24) on one side, which extends to the outside of the second annular airbag (15); A second exhaust pipe (25) is provided on one side of the second annular airbag (15), and the second exhaust pipe (25) extends to the outside of the second annular airbag (15); Both the first exhaust pipe (24) and the second exhaust pipe (25) are equipped with sealing plugs.

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