Fine nursing instrument for blood transfusion and transfusion in operating room

Abstract

The invention relates to the technical field of nursing, in particular to a fine nursing instrument for blood transfusion and transfusion in an operating room. The device comprises a base and a monitor. An infusion bottle or a blood transfusion bag is hung at one end of the balance assembly, adjustment is conducted through the balance assembly according to the gravity of the blood transfusion bag, and the blood transfusion bag is located at the position perpendicular to the ground. The height of the balance assembly is adjusted through the lifting assembly, so that the infusion height of the blood transfusion bag is adjusted, meanwhile, in the lifting process of the lifting assembly, the balance assembly keeps the balance stability of the blood transfusion bag, and therefore the blood transfusion bag is prevented from greatly shaking in the lifting process, and the internal cell viability is prevented from being damaged. After the lifting assembly is gradually lifted, the influence of the height on the stability of the lifting assembly is gradually weakened, gravity is pressed on the top of the lifting assembly through the balance assembly, the stress condition of the top of the lifting assembly is balanced, and the lifting assembly downwards forms balance pressure.

Description

Technical Field

[0001] The invention relates to the technical field of nursing, in particular to a fine nursing instrument for blood transfusion and infusion in an operating room. Background Art

[0002] The operating room blood transfusion and infusion precision nursing instrument is a precision medical device specially designed for the blood transfusion and infusion process in the operating room. This nursing instrument can usually accurately measure the speed, flow rate and total amount of blood transfusion and infusion to ensure the accuracy of the input amount and avoid overdose or underdose. Real-time monitoring of the pressure in the blood transfusion and infusion pipeline to prevent risks caused by excessive or low pressure, such as vascular damage or poor infusion. It can also detect tiny bubbles in the infusion pipeline, issue an alarm in time and take measures to remove bubbles to reduce the risk of air embolism. Maintain the appropriate temperature of the blood transfusion and infusion fluid to reduce the discomfort and complications caused by the infusion of overcold or overheated fluids. According to the patient's condition and treatment needs, the speed and flow rate of blood transfusion and infusion are automatically adjusted to improve the treatment effect. Record the relevant data of blood transfusion and infusion and transmit it to the hospital's information system to facilitate subsequent analysis and evaluation by medical staff. In addition, when abnormal conditions occur, such as abnormal flow rate, abnormal pressure, and the liquid is about to be infused, an audible and visual alarm will be issued in time to remind medical staff to deal with it in time.

[0003] In the specific use of the nursing instrument, the patient's body position may change due to the direction of the operation. In order to adapt to different surgical positions, better meet the patient's blood transfusion and infusion needs, and ensure the normal transfusion or infusion, the height of the infusion pole in the nursing instrument is usually adjusted. Since an infusion bottle or a blood transfusion bag is hung on the infusion pole, most infusion poles will cause the infusion bottle or the blood transfusion bag to shake when adjusting the height, which may easily damage the red blood cells inside the blood transfusion bag.

[0004] In view of this, the present invention provides a blood transfusion and infusion fine nursing instrument for an operating room. Summary of the invention

[0005] The purpose of the present invention is to provide a precise nursing instrument for blood transfusion and infusion in an operating room to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides a blood transfusion and infusion precision nursing instrument for an operating room, comprising a base and a monitor, wherein the monitor is fixedly connected to the top of the base, and a support is also fixedly connected to the top of the base, and the support is located near the outer wall of one side of the monitor;

[0007] A lifting assembly is movably connected inside the support, and a balancing assembly is fixedly connected to the top of the lifting assembly;

[0008] The lifting component is used to adjust the infusion height, and the balancing component is used to support the infusion bag. At the same time, the supporting force of the lifting component is balanced according to the weight of different infusion bags. In addition, during the movement of the balancing component, the stability of the lifting component can be improved to reduce the shaking amplitude of the infusion bag during the adjustment process.

[0009] As a further improvement of the present technical solution, the lifting assembly includes a thin rod, the outer wall of the thin rod is movably connected to a middle rod, a thick screw is movably connected between the inside of the middle rod and the inside of the thin rod, a slider is fixedly connected to the bottom of the thick screw, the slider is movably connected between the inside of the middle rod and the bottom of the thin rod, the outer wall of the middle rod is movably connected to the thick rod, the inside of the thick rod and the inside of the thick screw and the slider are movably connected with a thin screw, and the end of the thin rod is fixedly connected to a balancing assembly.

[0010] As a further improvement of the present technical solution, the balancing assembly includes a support rod, which is fixedly connected to the top of the thin rod, and a balancing rod is movably connected inside the support rod, and a weight and a nut are movably connected to the outer wall of one end of the balance rod that passes through the support rod, and a vertical support groove is fixedly connected to the bottom of the weight, and a horizontal support groove is fixedly connected to the outer wall of the support rod near the bottom, and a telescopic rod is movably connected between the vertical support groove and the horizontal support groove.

[0011] As a further improvement of the present technical solution, the telescopic rod includes two short rods, which are movably connected between the vertical support groove and the horizontal support groove respectively, and the outer walls on both sides of the short rod are fixedly connected with rotating rods, which are movably connected between the vertical support groove and the horizontal support groove, and a long rod is movably connected between the two short rods.

[0012] As a further improvement of the present technical solution, the outer wall of one end of the balance rod passing through the support rod is a threaded structure, and a weight and a nut are movably connected to the threaded outer wall of the balance rod. A rotating shaft is fixedly connected to the outer wall of the balance rod, and the rotating shaft is movably connected inside the support rod. The other end of the balance rod passing through the support rod is of an annular design.

[0013] As a further improvement of the technical solution, a clamping ring is movably connected to the inner part of the balance pole at the annular end, and a sliding rod is fixedly connected to the outer wall of the clamping ring near one end, and the sliding rod is movably connected to the inner part of the balance pole.

[0014] As a further improvement of the technical solution, the thick rod is fixedly connected to a toothed disc at the outer wall inside the support, the outer wall of the toothed disc is movably connected to a gear, and the top of the gear is fixedly connected to a motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the operating room blood transfusion and infusion precision nursing instrument, by hanging the infusion bottle or the blood transfusion bag on one end of the balance component, the balance component is adjusted according to the blood transfusion bag's own gravity, so that the blood transfusion bag is in a vertical position to the ground, thereby maintaining the stability of the blood transfusion bag suspension.

[0017] 2. In the operating room blood transfusion and infusion precision nursing instrument, the height of the balance component is adjusted by the lifting component, so as to adjust the infusion height of the blood transfusion bag, which is convenient for patients with different infusion height requirements. At the same time, during the lifting process of the lifting component, the balance stability of the blood transfusion bag is maintained by the balance component, thereby avoiding large shaking of the blood transfusion bag during the lifting process and avoiding damage to the internal cell activity.

[0018] 3. In the operating room blood transfusion and infusion precision nursing instrument, after the lifting component is gradually raised, its stability is gradually weakened by its height. The gravity is pressed on the top of the lifting component through the balancing component, and the force on the top of the lifting component is balanced, so that the lifting component forms a balanced pressure downward, thereby improving the stability of the lifting component itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the infusion pole of the present invention;

[0021] Figure 3 It is a schematic diagram of the balance process structure of the infusion pole of the present invention in a side cross-section;

[0022] Figure 4 It is a schematic diagram of the infusion cross-section side structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the balancing component of the present invention;

[0025] Figure 7 It is a schematic diagram of the telescopic rod structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the rotating structure of the present invention.

[0027] The meaning of each number in the figure is:

[0028] 1. base; 11. monitor; 12. support; 120. toothed disc; 121. gear;

[0029] 13. Lifting assembly; 130. Thick rod; 131. Middle rod; 132. Thin rod; 133. Thin screw rod; 134. Thick screw rod; 135. Sliding block;

[0030] 14. Balance assembly; 140. Support rod; 141. Balance rod; 142. Weight; 143. Nut; 144. Vertical support slot; 145. Horizontal support slot; 146. Telescopic rod; 1460. Short rod; 1461. Rotating rod; 1462. Long rod;

[0031] 15. Snap ring; 150. Sliding rod. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-Figure 8 As shown, the purpose of this embodiment is to provide an operating room blood transfusion and infusion precision nursing instrument, including a base 1 and a monitor 11, the monitor 11 is fixedly connected to the top of the base 1, and the top of the base 1 is also fixedly connected to a support 12, and the support 12 is located near the outer wall of one side of the monitor 11;

[0035] A lifting assembly 13 is movably connected inside the support 12, and a balancing assembly 14 is fixedly connected to the top of the lifting assembly 13;

[0036] The lifting assembly 13 is used to adjust the infusion height, and the balancing assembly 14 is used to support the infusion bag. At the same time, the supporting force of the lifting assembly 13 is balanced according to the weight of different infusion bags. In addition, during the movement of the balancing assembly 14, the stability of the lifting assembly 13 can be improved to reduce the shaking amplitude of the infusion bag during the adjustment process.

[0037] The improvement of this embodiment is that: by hanging the infusion bottle or the blood transfusion bag on one end of the balance component 14, the balance component 14 is adjusted according to the gravity of the blood transfusion bag itself, so that the blood transfusion bag is in a vertical position with the ground, and the stability of the blood transfusion bag hanging is maintained;

[0038] The height of the balance component 14 is adjusted by the lifting component 13, so as to adjust the infusion height of the blood transfusion bag, which is convenient for patients with different infusion height requirements. At the same time, during the lifting and lowering process of the lifting component 13, the balance component 14 maintains the balance stability of the blood transfusion bag, so as to avoid the blood transfusion bag from shaking significantly during the lifting process, thereby avoiding the destruction of the internal cell activity. Moreover, after the lifting component 13 is gradually raised, its stability is gradually weakened by its height. The balance component 14 holds the gravity on the top of the lifting component 13, and balances the force on the top of the lifting component 13, so that the lifting component 13 forms a balance pressure downward, thereby improving the stability of the lifting component 13 itself.

[0039] First, the specific structure of the lifting assembly 13 is disclosed. The lifting assembly 13 includes a thin rod 132, the outer wall of the thin rod 132 is movably connected to the middle rod 131, the inside of the middle rod 131 and the inside of the thin rod 132 are movably connected to a thick screw 134, the bottom of the thick screw 134 is fixedly connected to a slider 135, the slider 135 is movably connected between the inside of the middle rod 131 and the bottom of the thin rod 132, the outer wall of the middle rod 131 is movably connected to a thick rod 130, the inside of the thick rod 130 is connected to the thick screw 134 and A thin screw 133 is movably connected inside the slider 135, and a balancing assembly 14 is fixedly connected to the end of the thin rod 132. The thin screw 133 is driven by the motor output shaft to rotate between the inside of the thick rod 130 and the slider 135 and the inside of the thick screw 134 and the middle rod 131, so that the middle rod 131 moves up and down and telescopes between the outer wall of the thin screw 133 and the inner wall of the thick rod 130. The height of the slider 135, the thick screw 134 and the thin screw 133 is adjusted by the up and down movement of the middle rod 131;

[0040] The thin screw 133 rotates inside the slider 135 and the thick screw 134, so that the slider 135 and the thick screw 134 rotate around the outer wall of the thin screw 133, and the protrusion inside the slider 135 is movably connected to the inside of the middle rod 131, so as to limit the position of the slider 135 and the thick screw 134, and prevent the thick screw 134 and the slider 135 from moving along the outer wall of the thin screw 133. The rotation of the thick screw 134 drives the thin rod 132 on its outer wall to move up and down inside the middle rod 131, and the height of the thin rod 132 is adjusted, thereby adjusting the support height of the infusion bag, so as to facilitate the use of patients with different infusion needs.

[0041] Secondly, the specific structure of the balance assembly 14 is disclosed. The balance assembly 14 includes a support rod 140, which is fixedly connected to the top of the thin rod 132. The support rod 140 is movably connected to a balance rod 141 inside. The balance rod 141 passes through one end of the support rod 140 and is movably connected to a weight 142 and a nut 143 on the outer wall. The bottom of the weight 142 is fixedly connected to a vertical support groove 144. The outer wall of the support rod 140 is fixedly connected to a horizontal support groove 145 near the bottom. A telescopic rod 146 is movably connected between the vertical support groove 144 and the horizontal support groove 145. By hanging the blood transfusion bag on the balance rod 141 ring At the hook at the end of the shape, the blood transfusion bag's own gravity presses the balance bar 141, so that the balance bar 141 tilts to one side with the support rod 140 as the center, and the weight 142 slides on the outer wall of the other end of the balance bar 141. The closer the weight 142 is to the other end of the balance bar 141, the greater the gravity on the other end of the balance bar 141. By adjusting the position of the weight 142 on the balance bar 141, the gravity applied by the weight 142 and the blood transfusion bag is balanced, so that the blood transfusion bag is perpendicular to the ground, the stability during the infusion process is maintained, and the infusion tube is in a vertical state, which is convenient for transporting liquids;

[0042] The nut 143 is rotated on the outer wall of the balance bar 141 to block the position of the weight 142, so as to avoid that when the gravity of the balance bar 141 is kept horizontal, the weight 142 is affected by the height adjustment movement, and it is easy to slide along the balance bar 141 toward the infusion bag under the action of the gravity of the infusion bag, affecting the balance of the balance bar 141 and avoiding the shaking of the infusion bag. At the same time, during the movement of the weight 142, the telescopic rod 146 is driven to rotate between the vertical support groove 144 and the horizontal support groove 145, so as to form a supporting force for the weight 142 through the telescopic rod 146, and under the action of the gravity and the supporting force of the weight 142, the balance of the gravity of the support rod 140 is maintained, and the support rod 140 applies a relatively gentle gravity pressure to the thin rod 132, thereby improving the stability of the thin rod 132 and reducing the shaking amplitude generated during the up and down movement of the thin rod 132;

[0043] The telescopic rod 146 includes two short rods 1460, which are respectively movably connected between the vertical support groove 144 and the horizontal support groove 145. The outer walls on both sides of the short rods 1460 are fixedly connected with rotating rods 1461, which are movably connected inside the vertical support groove 144 and the horizontal support groove 145. A long rod 1462 is movably connected between the two short rods 1460. The vertical support groove 144 is driven to move by the movement of the weight 142, so that the short rods 1460 inside the vertical support groove 144 rotate inside it as the vertical support groove 144 moves, so that the two short rods 1460 can rotate inside the vertical support groove 144. The rotating rods 1461 on the outer walls of the short rods 1460 rotate inside the vertical support groove 144 and the horizontal support groove 145 respectively, so that the two short rods 1460 and the long rod 1462 are tilted as a whole along with the movement of the vertical support groove 144, and in the process of the short rods 1460 tilting, the distance between the two short rods 1460 is enlarged, thereby driving the long rod 1462 to slide between the two short rods 1460, extending the length of the two short rods 1460, so that the telescopic rod 146 supports the weight 142, and maintains the stability of the balancing force of the weight 142;

[0044] Furthermore, the outer wall of one end of the balance bar 141 passing through the support rod 140 is a threaded structure, and a weight 142 and a nut 143 are movably connected at the threaded outer wall of the balance bar 141. A rotating shaft is fixedly connected to the outer wall of the balance bar 141, and the rotating shaft is movably connected to the inside of the support rod 140. The other end of the balance bar 141 passing through the support rod 140 is annular in design. By designing one section of the balance bar 141 as an annular hook structure, it is convenient to hang the infusion bottle inside the annular hook of the balance bar 141, so as to support the infusion bottle. At the same time, by designing the outer wall of the other end of the balance bar 141 as a threaded structure, the nut 143 will not easily slide on the outer wall of the balance bar 141 when it rotates on the outer wall of the balance bar 141, so that the nut 143 can limit the position of the weight 142.

[0045] Taking into account that when the infusion bottle is hung on the outer wall of the balance bar 141, if the balance bar 141 tips over due to gravity, the infusion bottle may easily fall off. Therefore, a snap ring 15 is movably connected at the annular end inside the balance bar 141, and a sliding rod 150 is fixedly connected to the outer wall of the snap ring 15 near one end. The sliding rod 150 is movably connected to the inside of the balance bar 141. The snap ring 15 is movably connected inside the annular end of the balance bar 141, and the two sliding rods 150 move inside the slide groove of the balance bar 141, so that the position of the snap ring 15 is adjusted. By driving the clamping rod 150 to slide along the direction of the annular structure of the balance bar 141, the snap ring 15 is easily passed through the inside of the balance bar 141, and the infusion bottle is closed between the snap ring 15 and the inside of the balance bar 141.

[0046] In order to facilitate the adjustment of the hanging direction of the infusion bottle, the thick rod 130 is fixedly connected to the outer wall inside the support 12 with a toothed disc 120, and the outer wall of the toothed disc 120 is movably connected with a gear 121, and the top of the gear 121 is fixedly connected with a motor to adapt to patients in different surgical positions. Therefore, the gear 121 is driven to rotate by the motor output shaft, and the toothed disc 120 on its toothed surface is driven to rotate by the rotation of the gear 121, and the thick rod 130 is driven to rotate by the rotation of the toothed disc 120, so that the thick rod 130 rotates to adjust the overall supporting direction of the center rod 131 and the thin rod 132, so that the balance rod 141 can adjust the supporting direction of the infusion bottle, which is convenient for the balance rod 141 to adapt to patients in different surgical positions.

[0047] In summary, the working principle of this solution is as follows:

[0048] By hanging the infusion bottle or blood transfusion bag on one end of the balance assembly 14, by flexibly connecting the clamp ring 15 inside the annular end of the balance bar 141, and by moving the two sliding rods 150 inside the slide groove of the balance bar 141, the position of the clamp ring 15 is adjusted, and by driving the clamp rod 150 to slide along the direction of the annular structure of the balance bar 141, the clamp ring 15 is conveniently passed through the inside of the balance bar 141, and the infusion bottle is sealed between the clamp ring 15 and the inside of the balance bar 141;

[0049] The motor output shaft drives the gear 121 to rotate, and the gear 121 rotates to drive the toothed disc 120 on its toothed surface to rotate, and the toothed disc 120 rotates to drive the thick rod 130 to rotate, so that the thick rod 130 rotates to adjust the overall supporting direction of the middle rod 131 and the thin rod 132, so that the balancing rod 141 adjusts the supporting direction of the infusion bottle, so that the balancing rod 141 can adapt to patients in different surgical positions;

[0050] By hanging the blood transfusion bag on the hook at the annular end of the balance bar 141, the blood transfusion bag's own gravity presses the balance bar 141, so that the balance bar 141 tilts to one side with the support rod 140 as the center, and the weight 142 slides on the outer wall of the other end of the balance bar 141. The closer the weight 142 is to the other end of the balance bar 141, the greater the gravity on the other end of the balance bar 141. By adjusting the position of the weight 142 on the balance bar 141, the gravity applied by the weight 142 and the blood transfusion bag is balanced, so that the blood transfusion bag is perpendicular to the ground, the stability during the infusion process is maintained, and the infusion tube is in a vertical state, which is convenient for transporting liquids.

[0051] The motor output shaft drives the thin screw 133 to rotate between the inside of the thick rod 130 and the slider 135, the thick screw 134 and the middle rod 131, so that the middle rod 131 moves up and down and telescopes between the outer wall of the thin screw 133 and the inner wall of the thick rod 130, and the height of the slider 135, the thick screw 134 and the thin screw 133 is adjusted by the up and down movement of the middle rod 131;

[0052] The thin screw 133 rotates inside the slider 135 and the thick screw 134, so that the slider 135 and the thick screw 134 rotate around the outer wall of the thin screw 133. The protrusion inside the slider 135 is movably connected to the inside of the middle rod 131, so as to limit the position of the slider 135 and the thick screw 134, and prevent the thick screw 134 and the slider 135 from moving along the outer wall of the thin screw 133. The rotation of the thick screw 134 drives the thin rod 132 on its outer wall to move up and down inside the middle rod 131, so as to adjust the height of the thin rod 132, thereby adjusting the support height of the infusion bag, so as to facilitate the use of patients with different infusion needs;

[0053] The nut 143 is rotated on the outer wall of the balance bar 141 to block the position of the weight 142, so as to avoid that when the gravity of the balance bar 141 is kept horizontal, the weight 142 is affected by the height adjustment movement, and it is easy to slide along the balance bar 141 toward the infusion bag under the action of the gravity of the infusion bag, affecting the balance of the balance bar 141 and avoiding the shaking of the infusion bag. At the same time, during the movement of the weight 142, the telescopic rod 146 is driven to rotate between the vertical support groove 144 and the horizontal support groove 145, so as to form a supporting force for the weight 142 through the telescopic rod 146, and under the action of the gravity and the supporting force of the weight 142, the balance of the gravity of the support rod 140 is maintained, and the support rod 140 applies a relatively gentle gravity pressure to the thin rod 132, thereby improving the stability of the thin rod 132 and reducing the shaking amplitude generated during the up and down movement of the thin rod 132;

[0054] The telescopic rod 146 is driven by the weight 142 to move the vertical support slot 144, so that the short rod 1460 inside the vertical support slot 144 rotates inside the vertical support slot 144 as the vertical support slot 144 moves, so that the rotating rods 1461 on the outer walls of the two short rods 1460 rotate inside the vertical support slot 144 and the horizontal support slot 145 respectively, so that the two short rods 1460 and the long rod 1462 are tilted as a whole as the vertical support slot 144 moves, and in the process of the short rod 1460 tilting, the distance between the two short rods 1460 is enlarged, thereby driving the long rod 1462 to slide between the two short rods 1460, extending the length of the two short rods 1460, so that the telescopic rod 146 supports the weight 142, and maintains the stability of the balancing force of the weight 142;

[0055] Furthermore, by designing one section of the balance bar 141 as a ring hook structure, it is convenient to hang the infusion bottle inside the ring hook of the balance bar 141, so as to support the infusion bottle. At the same time, by designing the outer wall of the other end of the balance bar 141 as a threaded structure, the nut 143 will not easily slide on the outer wall of the balance bar 141 while rotating on the outer wall of the balance bar 141, so that the nut 143 can limit the position of the weight 142.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blood transfusion and infusion precision nursing instrument for an operating room, comprising a base (1) and a monitor (11), characterized in that: The monitoring instrument (11) is fixedly connected to the top of the base (1), and the top of the base (1) is also fixedly connected to a support (12), and the support (12) is located near the outer wall of one side of the monitoring instrument (11); The support (12) is movably connected to a lifting assembly (13) inside, and a balancing assembly (14) is fixedly connected to the top of the lifting assembly (13); The lifting component (13) is used to adjust the infusion height, and the balancing component (14) is used to support the infusion bag. At the same time, the supporting force of the lifting component (13) is balanced according to the weight of different infusion bags. In addition, during the movement of the balancing component (14), the stability of the lifting component (13) can be improved, thereby reducing the shaking amplitude of the infusion bag during the adjustment process.

2. The operating room blood transfusion and infusion fine nursing instrument according to claim 1 is characterized in that: The lifting assembly (13) comprises a thin rod (132), the outer wall of the thin rod (132) is movably connected to a middle rod (131), a thick screw rod (134) is movably connected between the inside of the middle rod (131) and the inside of the thin rod (132), a slider (135) is fixedly connected to the bottom of the thick screw rod (134), the slider (135) is movably connected between the inside of the middle rod (131) and the bottom of the thin rod (132), the outer wall of the middle rod (131) is movably connected to a thick rod (130), the inside of the thick rod (130) and the inside of the thick screw rod (134) and the slider (135) are movably connected with a thin screw rod (133), and the end of the thin rod (132) is fixedly connected to a balancing assembly (14).

3. The operating room blood transfusion and infusion fine nursing instrument according to claim 2 is characterized in that: The balancing assembly (14) comprises a support rod (140), wherein the support rod (140) is fixedly connected to the top of the thin rod (132), and a balancing rod (141) is movably connected inside the support rod (140), and an outer wall of one end of the balancing rod (141) passing through the support rod (140) is movably connected to a weight (142) and a nut (143), and a vertical support groove (144) is fixedly connected to the bottom of the weight (142), and a horizontal support groove (145) is fixedly connected to the outer wall of the support rod (140) near the bottom, and a telescopic rod (146) is movably connected between the vertical support groove (144) and the horizontal support groove (145).

4. The operating room blood transfusion and infusion fine nursing instrument according to claim 3 is characterized by: The telescopic rod (146) comprises two short rods (1460), and the two short rods (1460) are respectively movably connected between the vertical support groove (144) and the horizontal support groove (145). The outer walls on both sides of the short rods (1460) are fixedly connected with rotating rods (1461), and the rotating rods (1461) are movably connected inside the vertical support groove (144) and the horizontal support groove (145). A long rod (1462) is movably connected between the two short rods (1460).

5. The operating room blood transfusion and infusion fine nursing instrument according to claim 3 is characterized by: The outer wall of one end of the balance rod (141) passing through the support rod (140) is a threaded structure, and a weight (142) and a nut (143) are movably connected at the threaded outer wall of the balance rod (141). The outer wall of the balance rod (141) is fixedly connected to a rotating shaft, and the rotating shaft is movably connected to the inside of the support rod (140). The other end of the balance rod (141) passing through the support rod (140) is annular in design.

6. The operating room blood transfusion and infusion fine nursing instrument according to claim 5 is characterized in that: The balance rod (141) is internally located at the annular end and is movably connected to a snap ring (15). The outer wall of the snap ring (15) is fixedly connected to a slide rod (150) near one end thereof. The slide rod (150) is movably connected to the balance rod (141).

7. The operating room blood transfusion and infusion fine nursing instrument according to claim 2 is characterized by: The thick rod (130) is fixedly connected to a toothed disc (120) at the outer wall inside the support (12); a gear (121) is movably connected to the outer wall of the toothed disc (120); and a motor is fixedly connected to the top of the gear (121).

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