Vein quantitative bloodletting treatment device for thoracic surgery nursing

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a vein quantitative bloodletting treatment device for thoracic surgery nursing, which comprises a hollow base, the upper surface of the hollow base is fixedly connected with a rubber cylinder and a rolling bearing, the inner wall of the rolling bearing is fixedly connected with a support rod, and the top end of the support rod is sleeved with an L-shaped metal tube. The vein quantitative bloodletting treatment device for thoracic surgery nursing has the height adjusting capacity, the device can be conveniently stored, meanwhile, the vein bloodletting treatment device further has the functions of bloodletting drainage needle tube posture adjusting, precise quantitative bloodletting and automatic bloodletting pausing, smooth drainage of the bloodletting drainage needle tube is maintained, the risk of blood blockage is reduced, and the working efficiency is improved. And in the bloodletting treatment process, medical staff do not need to frequently check the bloodletting amount, time and labor are saved, the bloodletting treatment effect is improved, the body health of a patient is guaranteed, the use convenience and reliability of the device are improved, and the labor intensity of the medical staff is reduced.

Description

A thoracic surgery nursing device for quantitative intravenous bloodletting therapy Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a quantitative intravenous bloodletting therapy device for thoracic surgery nursing. Background Technology

[0002] Thoracic surgery nursing is a specialized nursing care for patients with diseases of the lungs, esophagus, mediastinum, and other thoracic organs. It covers the entire perioperative process. Preoperatively, it is necessary to complete patient physical assessment, surgical education, skin preparation, and airway preparation. Postoperatively, it is important to monitor vital signs, maintain proper care of chest drainage tubes and airways, and prevent complications such as bleeding, pulmonary infection, and pneumothorax. In thoracic surgery clinical nursing, patients with congestive heart failure, pleural effusion, and venous hypertension often require phlebotomy to relieve the body's burden and ensure the effectiveness of treatment.

[0003] Existing quantitative intravenous bloodletting devices suffer from the following technical defects: First, current quantitative intravenous bloodletting mainly relies on the scale lines on the surface of the storage bottle to determine the blood volume. During the bloodletting process, medical staff need to frequently check the blood volume in the storage bottle. When the required blood volume is reached, the medical staff then remove the bloodletting needle. However, this bloodletting treatment process is not only cumbersome and increases the labor intensity of medical staff, but it is also easy to overlook the blood in the drainage tube that has not flowed into the storage bottle, resulting in inaccurate control of the blood volume in intravenous bloodletting treatment, affecting the patient's health and the effectiveness of bloodletting treatment. Second, it is greatly affected by changes in the patient's body position, which can easily lead to bending of the drainage tube or even obstruction of the bloodletting pathway, causing blood stasis. This not only affects the reliability of quantitative bloodletting treatment, but also increases the risk of coagulation blockage, requiring medical staff to frequently check and adjust, increasing the nursing burden.

[0004] Therefore, we propose a venous quantitative bloodletting therapy device for thoracic surgery nursing to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a device for quantitative intravenous bloodletting therapy in thoracic surgery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a venous quantitative bloodletting treatment device for thoracic surgery nursing, comprising a hollow base, a rubber cylinder and a rolling bearing fixedly connected to the upper surface of the hollow base, a support rod fixedly connected to the inner wall of the rolling bearing, an L-shaped metal tube sleeved at the top end of the support rod, and a positioning mechanism fixedly connected to the bottom end of the L-shaped metal tube; a disposable bloodletting mechanism movably connected to the inner wall of the rubber cylinder; an adjusting sleeve movably sleeved on the wall of the L-shaped metal tube, a first screw hole being formed on the outer wall of the adjusting sleeve, and a first positioning bolt being threaded into the hole wall of the first screw hole; a reset mechanism fixedly connected to the outer wall of the adjusting sleeve; and a bloodletting volume quantitative mechanism fixedly connected to the bottom end of the support rod.

[0007] In the aforementioned thoracic surgery nursing intravenous quantitative bloodletting treatment device, the positioning mechanism includes a U-shaped block fixedly connected to the outer wall of the bottom end of an L-shaped metal tube. The outer wall of the U-shaped block has a through hole, and a T-shaped insert is movably connected to the wall of the through hole. A return spring is movably sleeved on the wall of the T-shaped insert. The two ends of the return spring are fixedly connected to the wall of the T-shaped insert and the outer wall of the U-shaped block, respectively. The wall of the L-shaped metal tube has a movable through hole that cooperates with the T-shaped insert. A circular stop block is fixedly connected to the bottom end of the support rod.

[0008] In the above-mentioned venous quantitative bloodletting treatment device for thoracic surgery nursing, the end of the T-shaped insert away from the reset spring has an arc surface, and the side wall of the circular stop has an arc chamfer.

[0009] In the above-mentioned intravenous quantitative bloodletting treatment device for thoracic surgery nursing, the disposable bloodletting mechanism includes a storage bottle movably connected to the inner wall of a rubber cylinder, a blood inlet at the top of the storage bottle is sealed with a bloodletting and drainage needle, and the inner wall of the rubber cylinder is provided with multiple venting grooves.

[0010] In the above-mentioned venous quantitative bloodletting treatment device for thoracic surgery nursing, the reset mechanism includes a fixing block fixedly connected to the outer wall of the adjusting sleeve, the top of the fixing block is provided with a fixing through hole, and a hollow spring tube is fixedly connected to the wall of the fixing through hole.

[0011] In the aforementioned intravenous quantitative bloodletting treatment device for thoracic surgery nursing, the bloodletting quantitative mechanism includes a transparent measuring cylinder fixedly connected to the outer wall of a support rod. A normally open solenoid valve is fixedly connected to the side end of the transparent measuring cylinder. A connecting hose is fixedly connected to the air inlet of the normally open solenoid valve. The air inlet of the connecting hose is sealed to the air outlet at the top of the storage bottle. Two circular holes are formed at the end of the transparent measuring cylinder away from the normally open solenoid valve, and a U-shaped hollow metal rod is slidably connected to the walls of both holes. The two ends of the U-shaped hollow metal rod are fixedly connected to... A metal sheet is fixedly connected to the core, and a rubber ring is fixedly sleeved on the outer wall of the metal sheet. The outer wall of the rubber ring is slidably and sealingly connected to the inner wall of the transparent measuring cylinder. Two limiting cylinders are fixedly embedded at the end of the transparent measuring cylinder away from the normally open solenoid valve. A U-shaped insulating sleeve is sleeved on the inner wall of the two limiting cylinders. A U-shaped conductive rod is fixedly connected to the inner wall of the U-shaped insulating sleeve. An indicator metal sheet is fixedly connected to the side end of the U-shaped conductive rod. An alarm is fixedly connected to the upper surface of the hollow base. A storage battery is fixedly connected to the inner wall of the bottom end of the hollow base.

[0012] In the above-mentioned thoracic surgery nursing intravenous quantitative bloodletting treatment device, the outer wall of the limiting cylinder is provided with a second threaded hole, and the hole wall of the second threaded hole is threadedly connected with a second positioning bolt.

[0013] In the above-mentioned venous quantitative bloodletting treatment device for thoracic surgery nursing, universal wheels are fixedly connected to the four corners of the lower surface of the hollow base, and an insulating soft sleeve is fixedly sleeved on the outer wall of the horizontal part of the U-shaped hollow metal rod.

[0014] Compared with existing technologies, the advantages of a quantitative intravenous bloodletting therapy device for thoracic surgery nursing are as follows: 1. Through the L-shaped metal tube and positioning mechanism, when a patient needs to relieve the body's burden through intravenous bloodletting therapy during thoracic surgery nursing, the L-shaped metal tube is first pulled up, raising the height of the repositioning mechanism. Then, the positioning mechanism limits the L-shaped metal tube, preventing it from falling back down. Next, the height of the adjusting sleeve is adjusted along the wall of the L-shaped metal tube. The adjusting sleeve drives the repositioning mechanism to adjust the height, ensuring that the height of the bloodletting line of the disposable bloodletting device meets the requirements, avoiding local excessive height of the bloodletting line of the disposable bloodletting device, which could lead to poor bloodletting drainage and stagnation. After the bloodletting treatment is completed, the constraint of the positioning mechanism is released, allowing the L-shaped metal tube to fall back down, reducing the height of the device and decreasing the volume of the intravenous bloodletting therapy device. This also facilitates the storage of the device. This mechanism gives the quantitative intravenous bloodletting therapy device for thoracic surgery nursing the ability to adjust its height.

[0015] 2. Using the disposable bloodletting mechanism and the bloodletting volume measurement mechanism, after the L-shaped metal tube is positioned, medical staff will determine the bloodletting volume based on various patient indicators. Then, a precise bloodletting volume is preset in the bloodletting volume measurement mechanism. Simultaneously, the disposable bloodletting mechanism is connected to the bloodletting volume measurement mechanism. Finally, the needle of the bloodletting drainage needle is inserted into the patient's vein, allowing blood to flow into the disposable bloodletting mechanism. The blood pushes air within the mechanism through the connecting tubing and normally open solenoid valve into the transparent measuring cylinder. Once the air volume in the transparent measuring cylinder reaches the preset precise bloodletting volume... When the alarm and normally open solenoid valve are energized, the normally open solenoid valve closes immediately upon energization, stopping the blood flow in the bloodletting and drainage needle, thus automatically pausing the bloodletting operation. The alarm sounds, reminding medical staff to remove the bloodletting and drainage needle and perform intravenous hemostasis. This mechanism enables the intravenous bloodletting treatment device to have precise quantitative bloodletting and automatic bloodletting pausing functions. During bloodletting treatment, medical staff no longer need to frequently check the bloodletting volume, saving time and effort. This not only improves the effectiveness of bloodletting treatment and protects the patient's health but also enhances the ease of use of the device and reduces the workload of medical staff.

[0016] 3. Through the reset mechanism, when the patient changes position during venous bloodletting treatment, causing the bloodletting and drainage needle to fluctuate, the bloodletting and drainage needle will cause the hollow spring tube to deform. The hollow spring tube will position and support the bloodletting and drainage needle. At the same time, during the deformation of the hollow spring tube, the bloodletting and drainage needle will adjust its state synchronously within the hollow spring tube, avoiding large-angle bending of the bloodletting and drainage needle and the interruption of blood flow. This maintains unobstructed drainage of the bloodletting and drainage needle and reduces the risk of blood blockage. This mechanism enables the device to adjust the posture of the bloodletting and drainage needle, improving the reliability of the device. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of a quantitative intravenous bloodletting therapy device for thoracic surgery nursing provided by the present invention; Figure 2 is a partial three-dimensional structural schematic diagram of the bloodletting volume quantitative mechanism in the quantitative intravenous bloodletting therapy device for thoracic surgery nursing provided by the present invention; Figure 3 is a structural schematic diagram of the positioning mechanism in the quantitative intravenous bloodletting therapy device for thoracic surgery nursing provided by the present invention; Figure 4 is a cross-sectional structural schematic diagram of the bloodletting volume quantitative mechanism in the quantitative intravenous bloodletting therapy device for thoracic surgery nursing provided by the present invention; Figure 5 is a three-dimensional structural schematic diagram of the hollow base portion in the quantitative intravenous bloodletting therapy device for thoracic surgery nursing provided by the present invention; Figure 6 is a structural schematic diagram of the resetting mechanism in the quantitative intravenous bloodletting therapy device for thoracic surgery nursing provided by the present invention.

[0018] In the diagram: 1 Hollow base, 2 Rubber cylinder, 3 Rolling bearing, 4 Support rod, 5 L-shaped metal tube, 6 Positioning mechanism, 61 U-shaped block, 62 T-shaped insertion rod, 63 Return spring, 64 Circular stop block, 7 Disposable bloodletting mechanism, 71 Storage bottle, 72 Bloodletting and drainage needle tube, 73 Exhaust groove, 8 Reset mechanism, 81 Fixing block, 82 Hollow spring tube, 9 Bloodletting volume measurement mechanism, 91 Transparent measuring cylinder, 92 Normally open solenoid valve, 93 Connecting hose, 94 U-shaped hollow metal rod, 95 Metal sheet, 96 Rubber ring, 97 Limiting cylinder, 98 U-shaped insulating sleeve, 99 U-shaped conductive rod, 910 Indicating metal sheet, 911 Alarm, 912 Battery, 10 Adjusting sleeve, 11 First positioning bolt, 12 Second positioning bolt, 13 Universal wheel, 14 Insulating soft sleeve. Detailed Implementation

[0019] 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.

[0020] As shown in Figures 1-6, a venous quantitative bloodletting treatment device for thoracic surgery nursing includes a hollow base 1. A rubber cylinder 2 and a rolling bearing 3 are fixedly connected to the upper surface of the hollow base 1. A support rod 4 is fixedly connected to the inner wall of the rolling bearing 3. An L-shaped metal tube 5 is sleeved on the top end of the support rod 4. A positioning mechanism 6 is fixedly connected to the bottom end of the L-shaped metal tube 5. The positioning mechanism 6 includes a U-shaped block 61 fixedly connected to the outer wall of the bottom end of the L-shaped metal tube 5. A through hole is opened on the outer wall of the U-shaped block 61. A T-shaped insert rod 62 is movably connected to the wall of the through hole. A return spring 63 is movably sleeved on the wall of the T-shaped insert rod 62. The two ends of the return spring 63 are fixedly connected to the wall of the T-shaped insert rod 62 and the outer wall of the U-shaped block 61, respectively. The wall of the L-shaped metal tube 5 is provided with a movable through hole that cooperates with the T-shaped insert rod 62. A circular stop block 64 is fixedly connected to the bottom end of the support rod 4. The end of the T-shaped insert rod 62 away from the return spring 63 is provided with an arc surface. The side wall of the circular stop block 64 is provided with an arc chamfer.

[0021] The inner wall of the rubber cylinder 2 is movably connected to a disposable bloodletting mechanism 7. The disposable bloodletting mechanism 7 includes a storage bottle 71 movably connected to the inner wall of the rubber cylinder 2. The blood inlet at the top of the storage bottle 71 is sealed with a bloodletting and drainage needle 72. The inner wall of the rubber cylinder 2 is provided with multiple venting grooves 73. The disposable bloodletting mechanism 7 is discarded after use to avoid cross-infection during the use of the bloodletting treatment device.

[0022] An adjusting sleeve 10 is movably fitted onto the wall of the L-shaped metal tube 5. The outer wall of the adjusting sleeve 10 has a first screw hole, and the wall of the first screw hole is threaded with a first positioning bolt 11. A reset mechanism 8 is fixedly connected to the outer wall of the adjusting sleeve 10. The reset mechanism 8 includes a fixing block 81 fixedly connected to the outer wall of the adjusting sleeve 10. The top of the fixing block 81 has a fixing through hole, and the wall of the fixing through hole is fixedly connected with a hollow spring tube 82. The hollow spring tube 82 has a slight elasticity. When the bloodletting and drainage needle tube 72 moves, the hollow spring tube 82 also deforms accordingly, but it will ensure that the bloodletting and drainage needle tube 72 is unobstructed and does not get tangled.

[0023] A bloodletting volume measuring mechanism 9 is fixedly connected to the bottom end of the support rod 4. The bloodletting volume measuring mechanism 9 includes a transparent measuring cylinder 91 fixedly connected to the outer wall of the support rod 4. A normally open solenoid valve 92 is fixedly connected to the side end of the transparent measuring cylinder 91. A connecting hose 93 is fixedly connected to the air inlet of the normally open solenoid valve 92. The air inlet of the connecting hose 93 is sealed to the air outlet at the top of the storage bottle 71. Two round holes are opened at the end of the transparent measuring cylinder 91 away from the normally open solenoid valve 92. A U-shaped hollow metal rod 94 is slidably connected to the walls of the two round holes. A metal sheet 95 is fixedly connected to both ends of the U-shaped hollow metal rod 94. The thickness of the metal sheet 95 is set to 1-3 mm (the specific thickness of the metal sheet 95 is determined by calculation based on parameters such as the closing delay time of the normally open solenoid valve 92 and the inertia of the pipeline fluid). Its core function is to offset the delay caused by the circuit response delay, the mechanical closing delay of the normally open solenoid valve 92, and the inertial flow of the blood pipeline during the automatic pause of bloodletting by using the volume of the transparent measuring cylinder 91 it occupies. The small amount of excess blood loss, i.e., the air displacement volume inside the transparent measuring cylinder 91 corresponding to the thickness of the metal sheet 95, is precisely matched with the amount of extra blood that may flow in during the delay period. This is equivalent to actively compensating for the delay error by triggering the circuit in advance (the thickness of the metal sheet 95 causes the air to push it to contact the indicating metal sheet 910 slightly earlier than in the state without thickness), further improving the accuracy of quantitative blood loss. A rubber ring 96 is fixedly sleeved on the outer wall of the metal sheet 95. The outer wall of the rubber ring 96 is slidably connected to the inner wall of the transparent measuring cylinder 91. Two limiting cylinders 97 are fixedly embedded at the end of the transparent measuring cylinder 91 away from the normally open solenoid valve 92. A U-shaped insulating sleeve 98 is sleeved on the inner wall of the two limiting cylinders 97. A U-shaped conductive rod 99 is fixedly connected to the inner wall of the U-shaped insulating sleeve 98. An indicating metal sheet 910 is fixedly connected to the side end of the U-shaped conductive rod 99. An alarm 911 is fixedly connected to the upper surface of the hollow base 1. A battery 912 is fixedly connected to the inner wall of the bottom end of the hollow base 1.

[0024] The outer wall of the limiting cylinder 97 is provided with a second threaded hole, and the hole wall of the second threaded hole is threaded with a second positioning bolt 12. The four corners of the lower surface of the hollow base 1 are fixedly connected with casters 13, and the horizontal outer wall of the U-shaped hollow metal rod 94 is fixedly sleeved with an insulating soft sleeve 14.

[0025] The normally open solenoid valve 92, the alarm 911, the U-shaped hollow metal rod 94, and the U-shaped conductive rod 99 are connected in series with the storage battery 912 via wires. However, the U-shaped hollow metal rod 94 and the U-shaped conductive rod 99 are not connected by wires. The above-mentioned electrical components and connections are existing technology and will not be described in detail here.

[0026] The operating principle of this invention is described as follows: During thoracic surgery nursing, when a patient needs to relieve the body's burden through venipuncture, the L-shaped metal tube 5 is first pulled up, raising the height of the reset mechanism 8. As the L-shaped metal tube 5 is stretched to its highest point, the T-shaped insert 62 is pushed outward by the arc-shaped chamfer of the circular stop 64, simultaneously causing the reset spring 63 to be stretched and generating a pull-back force. When the circular stop 64 passes the T-shaped insert 62, the T-shaped insert 62, under the pull-back of the reset spring 63, inserts above the circular stop 64, preventing the L-shaped metal tube 5 from falling back down. Then, along... The height of the adjusting sleeve 10 is adjusted along the wall of the L-shaped metal tube 5. The adjusting sleeve 10 drives the height adjustment of the reset mechanism 8. After adjustment, the adjusting sleeve 10 is limited by rotating the first positioning bolt 11 to ensure that the height of the bloodletting line of the disposable bloodletting mechanism 7 meets the requirements, avoiding local excessive height of the bloodletting line of the disposable bloodletting mechanism 7, which could lead to poor bloodletting drainage and stagnation. After bloodletting treatment, the constraint of the positioning mechanism 6 is released, causing the L-shaped metal tube 5 to fall back, reducing the height of the device and the volume of the venous bloodletting treatment device, while also facilitating the storage of the device (e.g., storing it under the bed). This device, designed for thoracic surgery nursing, provides highly adjustable intravenous quantitative bloodletting therapy and facilitates easy storage. After the L-shaped metal tube 5 is positioned, medical staff determine the bloodletting volume (e.g., 300 ml) based on various patient indicators (such as the severity of the illness, weight, and physical condition). Then, the position of the U-shaped conductive rod 99 is adjusted using the U-shaped insulating sleeve 98. The U-shaped conductive rod 99 moves the indicator metal plate 910 within the transparent measuring cylinder 91, ultimately moving the indicator metal plate 910 to the graduation line on the transparent measuring cylinder 91 that corresponds to the desired bloodletting volume. Afterwards, the medical staff rotate... Turn the second positioning bolt 12, which compresses the U-shaped insulating sleeve 98, ultimately fixing the U-shaped conductive rod 99. Then, the medical staff inserts the storage bottle 71 into the rubber cylinder 2 for positioning, and seals the air inlet of the connecting hose 93 with the air outlet at the top of the storage bottle 71. The outlet end of the bloodletting and drainage needle 72 passes through the hollow spring tube 82 and is sealed with the blood inlet at the top of the storage bottle 71. Finally, the needle of the bloodletting and drainage needle 72 is inserted into the vein of the patient to be bled, and the needle of the bloodletting and drainage needle 72 is fixed with medical tape to perform venous bloodletting treatment on the patient.At this time, the patient's venous blood is injected into the disposable bloodletting device 7. The blood pushes the air in the disposable bloodletting device 7 through the connecting hose 93 and the normally open solenoid valve 92 into the transparent measuring cylinder 91. The blood will be temporarily stored in the storage bottle 71, and the air in the storage bottle 71 will accumulate in the transparent measuring cylinder 91. As more air accumulates in the transparent measuring cylinder 91, the air pushes the metal sheet 95 to move through the rubber ring 96. Finally, the metal sheet 95 will come into contact with the indicator metal sheet 910 on the side of the U-shaped conductive rod 99. At this time, the U-shaped hollow metal rod 94 and the U-shaped conductive rod 99 are connected. When the circuit is connected, the alarm 911 and the normally open solenoid valve 92 are energized. The normally open solenoid valve 92 closes immediately upon energization, preventing air from escaping from the top of the storage bottle 71. The air pressure inside the storage bottle 71 rises and gradually balances with the patient's venous blood pressure. Due to the loss of pressure difference, blood can no longer flow into the storage bottle 71, thus stopping blood flow in the bloodletting and drainage needle 72, automatically pausing the bloodletting process. Simultaneously, the alarm 911 sounds an alarm, reminding medical staff to promptly remove the bloodletting and drainage needle 72 and perform intravenous hemostasis. At the same time, the transparent measuring cylinder... The air volume within 91 is the sum of the blood volume in storage bottle 71 and the bloodletting and drainage needle 72, achieving the precise bloodletting volume preset by medical staff for the patient. This mechanism enables the intravenous bloodletting treatment device to have precise quantitative bloodletting and automatic bloodletting pause functions. During bloodletting treatment, medical staff do not need to frequently check the bloodletting volume, saving time and effort. This not only improves the effectiveness of bloodletting treatment and protects the patient's health but also enhances the ease of use of the device and reduces the workload of medical staff. During intravenous bloodletting treatment, changes in the patient's position move the bloodletting and drainage needle. When tube 72 fluctuates, the bloodletting and drainage needle 72 causes the hollow spring tube 82 to deform. The hollow spring tube 82 positions and supports the bloodletting and drainage needle 72. Simultaneously, during the deformation of the hollow spring tube 82, the bloodletting and drainage needle 72 adjusts its position within the hollow spring tube 82, preventing large-angle bending and potential interruption of blood flow. This mechanism enables the device to adjust the posture of the bloodletting and drainage needle 72, maintaining unobstructed drainage, reducing the risk of blood blockage, and improving the reliability of the device.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for quantitative intravenous bloodletting therapy in thoracic surgery, comprising a hollow base (1), characterized in that, A rubber cylinder (2) and a rolling bearing (3) are fixedly connected to the upper surface of the hollow base (1). A support rod (4) is fixedly connected to the inner wall of the rolling bearing (3). An L-shaped metal tube (5) is sleeved on the top of the support rod (4). A positioning mechanism (6) is fixedly connected to the bottom of the L-shaped metal tube (5). A disposable bloodletting mechanism (7) is movably connected to the inner wall of the rubber cylinder (2). An adjusting sleeve (10) is movably sleeved on the wall of the L-shaped metal tube (5). A first screw hole is opened on the outer wall of the adjusting sleeve (10), and a first positioning bolt (11) is threaded on the hole wall of the first screw hole. A reset mechanism (8) is fixedly connected to the outer wall of the adjusting sleeve (10). A bloodletting volume metering mechanism (9) is fixedly connected to the bottom of the support rod (4).

2. The intravenous quantitative bloodletting therapy device for thoracic surgery nursing according to claim 1, characterized in that, The positioning mechanism (6) includes a U-shaped block (61) fixedly connected to the outer wall of the bottom end of the L-shaped metal tube (5). The outer wall of the U-shaped block (61) has a through hole, and the wall of the through hole is movably connected to a T-shaped rod (62). The rod wall of the T-shaped rod (62) is movably sleeved with a return spring (63). The two ends of the return spring (63) are fixedly connected to the rod wall of the T-shaped rod (62) and the outer wall of the U-shaped block (61), respectively. The tube wall of the L-shaped metal tube (5) has a movable through hole that cooperates with the T-shaped rod (62). The bottom end of the support rod (4) is fixedly connected to a circular stop (64).

3. The intravenous quantitative bloodletting therapy device for thoracic surgery nursing according to claim 2, characterized in that, The T-shaped insert (62) has an arc surface at the end away from the reset spring (63), and the side wall of the circular stop (64) has an arc chamfer.

4. The intravenous quantitative bloodletting therapy device for thoracic surgery nursing according to claim 1, characterized in that, The disposable bloodletting mechanism (7) includes a storage bottle (71) movably connected to the inner wall of the rubber cylinder (2). The blood inlet at the top of the storage bottle (71) is sealed with a bloodletting and drainage needle (72). The inner wall of the rubber cylinder (2) is provided with multiple venting grooves (73).

5. A quantitative intravenous bloodletting therapy device for thoracic surgery nursing according to claim 1, characterized in that, The reset mechanism (8) includes a fixing block (81) fixedly connected to the outer wall of the adjusting sleeve (10). The top of the fixing block (81) is provided with a fixing through hole, and a hollow spring tube (82) is fixedly connected to the hole wall of the fixing through hole.

6. A venous quantitative bloodletting therapy device for thoracic surgery nursing according to claim 4, characterized in that, The bloodletting volume measurement mechanism (9) includes a transparent measuring cylinder (91) fixedly connected to the outer wall of the support rod (4). A normally open solenoid valve (92) is fixedly connected to the side end of the transparent measuring cylinder (91). A connecting hose (93) is fixedly connected to the air inlet of the normally open solenoid valve (92). The air inlet of the connecting hose (93) is sealed to the air outlet at the top of the storage bottle (71). Two round holes are opened at the end of the transparent measuring cylinder (91) away from the normally open solenoid valve (92). A U-shaped hollow metal rod (94) is slidably connected to the walls of the two round holes. A metal sheet (95) is fixedly connected to both ends of the U-shaped hollow metal rod (94). A rubber ring (96) is fixedly sleeved on the outer wall of the transparent measuring cylinder (91). The outer wall of the rubber ring (96) is slidably connected to the inner wall of the transparent measuring cylinder (91). Two limiting cylinders (97) are fixedly embedded at the end of the transparent measuring cylinder (91) away from the normally open solenoid valve (92). A U-shaped insulating sleeve (98) is sleeved on the inner wall of the two limiting cylinders (97). A U-shaped conductive rod (99) is fixedly connected to the inner wall of the U-shaped insulating sleeve (98). An indicator metal piece (910) is fixedly connected to the side end of the U-shaped conductive rod (99). An alarm (911) is fixedly connected to the upper surface of the hollow base (1). A storage battery (912) is fixedly connected to the inner wall of the bottom end of the hollow base (1).

7. A quantitative intravenous bloodletting therapy device for thoracic surgery nursing according to claim 6, characterized in that, The outer wall of the limiting cylinder (97) is provided with a second threaded hole, and the hole wall of the second threaded hole is threadedly connected with a second positioning bolt (12).

8. A venous quantitative bloodletting therapy device for thoracic surgery nursing according to claim 6, characterized in that, The hollow base (1) is fixedly connected to four corners of the lower surface with casters (13), and the horizontal outer wall of the U-shaped hollow metal rod (94) is fixedly fitted with an insulating soft sleeve (14).

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