Medical blood transfusion apparatus

Abstract

The invention discloses a medical blood transfusion apparatus, and relates to the technical field of blood infusion, the medical blood transfusion apparatus comprises a soft delivery tube and an intravenous infusion needle mounted at one end of the soft delivery tube, and further comprises a drip chamber assembly used for observing the dripping speed in the blood infusion process to assist in controlling the blood transfusion speed; the puncture assembly is arranged at the front end of the drip chamber assembly in a communicating mode and used for being in puncture connection with a blood transfusion bag in a blunt end mode; the adjusting assembly is arranged in the drip chamber assembly and used for adjusting and controlling the state of the puncture assembly. When the medical blood transfusion apparatus is used, the puncture assembly is arranged to be a blunt end, and when the puncture assembly is connected with the blood bag in an inserted mode, the puncture hole diameter of the puncture assembly is adjusted and controlled in a contraction mode, it can be guaranteed that the blood bag can be punctured into the blood bag rapidly and effectively, and the probability that the blood bag is punctured when the medical blood transfusion apparatus is connected with the blood bag in a punctured mode can also be reduced; and in the puncture connection process, opening and closing control is synchronously conducted on the conveying pipeline by adjusting the puncture hole diameter, and use of the medical blood transfusion apparatus is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of blood transfusion, in particular to a medical blood transfusion device. Background Art

[0002] Medical blood transfusion sets are indispensable devices in blood transfusion therapy. They ensure the safe delivery of blood components through standardized design and dynamic adjustment.

[0003] When the medical blood transfusion device is in use, it is connected to the blood transfusion bag through an insert connection. The insert connection directly punctures the rubber stopper of the blood bag through the puncture needle of the blood transfusion device. No complicated auxiliary tools or additional steps are required, especially in emergency blood transfusion scenarios. The connection can be completed quickly to gain time for treatment.

[0004] When the medical blood transfusion set is connected to the blood bag by puncture, the puncture needle of the blood transfusion set is sharp for quick and easy puncture. However, if the tip is too sharp, it is easy to puncture the blood bag rubber stopper while puncturing the blood bag rubber stopper if the operating force is not properly controlled, especially for ultra-thin blood bags or aged rubber stoppers, which affects the normal blood transfusion of the medical blood transfusion set. Therefore, we propose a medical blood transfusion set. Summary of the invention

[0005] The object of the present invention is to provide a medical blood transfusion device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a medical blood transfusion device, comprising a soft delivery tube and an intravenous infusion needle installed at one end of the soft delivery tube, and further comprising:

[0007] The drip bucket assembly is used to observe the drip flow rate during blood infusion and assist in controlling the blood transfusion rate;

[0008] The puncture assembly is arranged at the front end of the drip bucket assembly and is used for puncturing and connecting with the blood transfusion bag in a blunt manner;

[0009] An adjustment component is arranged inside the drip bucket component and is used to adjust and control the state of the puncture component;

[0010] And a control component is arranged inside the drip bucket component and is used to control the blocking and opening of the blood transfusion management according to the adjustment requirements during the adjustment process of the adjustment component.

[0011] Preferably, the drip bucket assembly includes a mounting cylinder, the lower end of which is connected and fixed with a mounting tube, the other end of the soft conveying tube is fixed to the end of the mounting tube, the upper end of the mounting cylinder is threadedly mounted and connected with a connecting cylinder, and a sealing assembly for auxiliary sealing is arranged between the mounting cylinder and the connecting cylinder.

[0012] Preferably, the puncture assembly includes a T-shaped rubber cylinder arranged on the connecting cylinder. The T-shaped rubber cylinder is composed of a cylinder body and an annular base. The annular base is fixed inside the connecting cylinder. A plurality of groups of L-shaped mounting grooves are formed on the T-shaped rubber cylinder, and each group of L-shaped mounting grooves is arranged in an annular array on the T-shaped rubber cylinder. An L-shaped plate that matches it is fixed on the L-shaped mounting groove, and the front end of the L-shaped plate protrudes from the front side of the T-shaped rubber cylinder. An expansion and contraction assembly for assisting in the telescopic connection of the L-shaped plate is arranged inside the connecting cylinder.

[0013] Preferably, the expansion and contraction assembly includes a transmission plate fixed to the lower end of the L-shaped plate. A plurality of T-shaped rods are slidably connected to the transmission plate, and one end of each T-shaped rod is fixed inside the connecting cylinder.

[0014] Preferably, the adjustment assembly includes an annular drive disk arranged inside the connecting cylinder. A rotation assembly for assisting in the rotatable connection of the annular drive disk is arranged between the annular drive disk and the inner wall of the connecting cylinder. A plurality of inclined grooves are formed on the annular drive disk, and a transmission pin is slidably connected to each inclined groove. One end of each transmission pin is fixed to each L-shaped plate respectively. A connection assembly for assisting in the connection is arranged between the annular drive disk and the inside of the installation cylinder.

[0015] Preferably, the connection assembly includes two spline sleeves fixed to the lower end of the annular drive disk, and the two spline sleeves are arranged symmetrically. A spline rod is slidably connected to the spline sleeve, and one end of the spline rod is fixed to the inner wall of the installation cylinder.

[0016] Preferably, the control assembly includes a connecting plate. Two mounting holes are symmetrically formed on the connecting plate, and the connecting plate is sleeved and fixed on the outside of the two spline sleeves through the two mounting holes respectively. A plug for abutting and blocking the installation pipe is arranged inside the installation cylinder. The plug is located below the connecting plate and is connected and fixed through a fixing rod.

[0017] Preferably, the rotation assembly includes an annular groove formed on the outside of the annular drive disk. An annular strip is rotatably connected to the inside of the annular groove, and the annular strip is fixed inside the connecting cylinder.

[0018] Preferably, the sealing assembly includes an annular mounting groove formed inside the installation cylinder. A sealing ring for abutting and sealing against the outside of the connecting cylinder is installed inside the annular mounting groove.

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

[0020] When the medical blood transfusion device of the present invention is in use, by setting the puncture component to a blunt head and adjusting and controlling the puncture aperture of the puncture component when it is inserted and connected to the blood bag, it can not only ensure a quick and effective puncture into the blood bag, but also reduce the probability of puncturing the blood bag when the medical blood transfusion device is punctured and connected to the blood bag. Moreover, during the puncture connection process, by adjusting the puncture aperture, the opening and closing control of the delivery pipeline is synchronized, making the use of the medical blood transfusion device more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0022] Figure 2 is a schematic diagram of the drip chamber assembly and the sealing assembly structure of the present invention;

[0023] Figure 3 is a schematic diagram of the connection assembly and the control assembly structure of the present invention;

[0024] Figure 4 is a schematic diagram of the telescopic assembly, the adjustment assembly and the rotation assembly structure of the present invention;

[0025] Figure 5 is a schematic diagram of the T-shaped rubber cylinder and the telescopic assembly structure of the present invention;

[0026] Figure 6 is a schematic diagram of the arrangement state of each group of L-shaped plates on the T-shaped rubber cylinder of the present invention;

[0027] Figure 7 is a schematic diagram of the force movement direction of each group of L-shaped plates of the present invention;

[0028] Figure 8 is a schematic diagram of the T-shaped rubber cylinder structure of the present invention;

[0029] Figure 9 is a schematic diagram of the puncture aperture contraction transmission direction of the puncture component of the present invention;

[0030] Figure 10 is a schematic diagram of the state after the puncture aperture of the puncture component of the present invention is contracted and after the control component is adjusted.

[0031] In the figure: 101 - soft delivery tube; 102 - intravenous infusion needle; 201 - installation cylinder; 202 - connection cylinder; 203 - installation tube; 301 - T-shaped rubber cylinder; 302 - L-shaped installation groove; 303 - L-shaped plate; 401 - drive plate; 402 - T-shaped rod; 501 - annular drive disk; 502 - inclined groove; 503 - drive pin; 601 - spline sleeve; 602 - spline rod; 701 - connection plate; 702 - fixed rod; 703 - plug; 801 - annular groove; 802 - annular strip; 901 - annular installation groove; 902 - sealing ring. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0033] Embodiment 1

[0034] Please refer to Figures 1 - 10 , a medical blood transfusion device in the figure, including a soft delivery tube 101 and a venous infusion needle 102 installed at one end of the soft delivery tube 101;

[0035] It should be noted here that: the soft delivery tube 101 and the venous infusion needle 102 are common operating components in the technical field of blood transfusion devices, and their working principles and operating methods are regarded as prior art in this application and will not be further elaborated here;

[0036] It further includes:

[0037] A drip chamber assembly for observing the drip rate during blood transfusion to assist in controlling the blood transfusion speed;

[0038] A puncture assembly, which is communicatively arranged at the front end of the drip chamber assembly for puncture connection with the blood bag in a blunt-headed manner;

[0039] An adjustment assembly, which is arranged inside the drip chamber assembly for adjusting and controlling the state of the puncture assembly;

[0040] And a control assembly arranged inside the drip chamber assembly for controlling the blocking and opening of the blood transfusion management according to the adjustment requirements during the adjustment process of the adjustment assembly;

[0041] It should be noted here that: when the medical blood transfusion device is in use, by setting the puncture assembly to be blunt-headed and adjusting and controlling the puncture aperture of the puncture assembly when inserting and connecting with the blood bag, it can not only ensure rapid and effective puncture into the blood bag, but also reduce the probability of piercing the blood bag when the medical blood transfusion device is puncture-connected to the blood bag. And during the puncture connection process, through the adjustment of the puncture aperture, the opening and closing control of the delivery pipeline are synchronously carried out, which is more convenient for the use of the medical blood transfusion device.

[0042] Preferably, the drip chamber assembly includes an installation cylinder 201. The lower end of the installation cylinder 201 is fixedly communicated with an installation pipe 203. The other end of the soft delivery tube 101 is installed and fixed to the end of the installation pipe 203. The upper end of the installation cylinder 201 is installed and connected by means of a thread with a connection cylinder 202. A sealing assembly for auxiliary sealing is arranged between the installation cylinder 201 and the connection cylinder 202;

[0043] It should be noted here that: through the installation cylinder 201, the installation pipe 203 and the function of the installation pipe 203, it is convenient to identify the dripping speed of blood during the blood transportation process, and the installation cylinder 201 and the installation pipe 203 are arranged in a transparent state.

[0044] Preferably, the puncture assembly includes a T-shaped rubber cylinder 301 arranged on the connection cylinder 202. The T-shaped rubber cylinder 301 is composed of a cylinder body and an annular base. The annular base is fixed inside the connection cylinder 202. A plurality of groups of L-shaped installation grooves 302 are formed on the T-shaped rubber cylinder 301, and each group of L-shaped installation grooves 302 is arranged in an annular array on the T-shaped rubber cylinder 301. An L-shaped plate 303 that is matched with it is fixed on the L-shaped installation groove 302, and the front end of the L-shaped plate 303 protrudes from the front side of the T-shaped rubber cylinder 301. An expansion and contraction assembly for assisting in the telescopic connection of the L-shaped plate 303 is arranged inside the connection cylinder 202;

[0045] It should be noted here that: during the process of the L-shaped plates 303 moving together, through the movement of the L-shaped plates 303 and the flexible connection function of the T-shaped rubber cylinder 301, the aperture of the cylinder body of the T-shaped rubber cylinder 301 is reduced, realizing the contraction adjustment of the aperture of the puncture assembly. Through the contraction adjustment of the aperture of the puncture assembly and the rigid connection function of each group of L-shaped plates 303 on the puncture assembly, it is convenient for the cylinder body of the T-shaped rubber cylinder 301 on the puncture assembly to puncture through the rubber plug of the blood bag, ensuring the connection efficiency with the blood bag. And when the cylinder body of the T-shaped rubber cylinder 301 punctures through the rubber plug of the blood bag, because the front end of the rigid L-shaped plate 303 protrudes from the front side of the T-shaped rubber cylinder 301, while pushing the puncture of each group of L-shaped plates 303 and maintaining a certain amplitude of rotation, the entire T-shaped rubber cylinder 301 can quickly and effectively puncture into the blood bag with a smaller aperture, assisting the subsequent blood injection and transfusion.

[0046] Preferably, the expansion and contraction assembly includes a transmission plate 401 fixed to the lower end of the L-shaped plate 303. A plurality of T-shaped rods 402 are slidably connected to the transmission plate 401, and one end of the T-shaped rod 402 is fixed inside the connection cylinder 202;

[0047] It should be noted here that: through the transmission plate 401 and the T-shaped rods 402, it is convenient to assist in the transmission and guidance of the L-shaped plate 303.

[0048] Preferably, the adjusting assembly includes an annular driving disc 501 disposed inside the connecting cylinder 202. A rotating assembly for assisting in rotatably connecting the annular driving disc 501 is provided between the annular driving disc 501 and the inner wall of the connecting cylinder 202. A plurality of groups of inclined slots 502 are formed in the annular driving disc 501. A transmission pin 503 is slidably connected to each group of inclined slots 502. One end of each group of transmission pins 503 is fixed to each group of L-shaped plates 303 respectively. A connecting assembly for assisting in connection is provided between the annular driving disc 501 and the inside of the mounting cylinder 201.

[0049] It should be noted here that: through transmission, the annular driving disc 501 and the mounting cylinder 201 rotate relative to each other. During the relative rotation, through the interaction between each group of inclined slots 502 on the annular driving disc 501 and each group of transmission pins 503, each group of transmission plates 401 is driven to move under force. During the movement of each group of transmission plates 401, through the sliding guiding action of the T-shaped rod 402, each group of transmission plates 401 after being stressed move closer to or away from each other.

[0050] Preferably, the connecting assembly includes two spline sleeves 601 fixed to the lower end of the annular driving disc 501, and the two spline sleeves 601 are arranged symmetrically. A spline rod 602 is slidably connected to the spline sleeve 601. One end of the spline rod 602 is fixed to the inner wall of the mounting cylinder 201.

[0051] It should be noted here that: through the spline sleeve 601 and the spline rod 602, it is convenient to assist in the telescopic guiding connection of the annular driving disc 501, and through the connection between the spline sleeve 601 and the spline rod 602, the annular driving disc 501 does not rotate with the rotation of the connecting cylinder 202.

[0052] Preferably, the control assembly includes a connecting plate 701. Two mounting holes are symmetrically formed in the connecting plate 701, and the connecting plate 701 is sleeved and fixed outside the two spline sleeves 601 through the two mounting holes respectively. A plug 703 for abutting and blocking the mounting pipe 203 is arranged inside the mounting cylinder 201. The plug 703 is located below the connecting plate 701 and is connected and fixed through a fixing rod 702.

[0053] It should be noted here that when the connecting cylinder 202 is rotated and screwed into the interior of the mounting cylinder 201, the connecting cylinder 202, the annular drive disk 501 and the spline sleeve 601 are connected to drive the connecting plate 701 to move synchronously. During the movement of the connecting plate 701, the fixing rod 702 is connected to drive the plug 703 to move towards the mounting tube 203 and abut against the inner wall of the mounting tube 203, thereby blocking the entire blood delivery pipeline. By this blocking effect, it is avoided that blood immediately flows out when the puncture assembly punctures and connects to the blood bag, which brings inconvenience to the operation of medical staff, such as possibly soiling the operation area and contaminating gloves, etc., affecting the smooth progress of the operation. After the puncture connection, when the connecting cylinder 202 is rotated and screwed out towards the outside of the mounting cylinder 201 to increase the aperture of the T-shaped rubber cylinder 301, through transmission, the connecting plate 701, the fixing rod 702 and the plug 703 are driven to reset. At this time, the pipeline is no longer blocked, facilitating normal blood infusion operation.

[0054] Preferably, the rotating assembly includes an annular groove 801 formed on the outer side of the annular drive disk 501. An annular strip 802 is rotatably connected inside the annular groove 801, and the annular strip 802 is fixed inside the connecting cylinder 202;

[0055] It should be noted here that through the annular groove 801 and the annular strip 802, it is convenient to assist the rotational connection of the annular drive disk 501 inside the connecting cylinder 202.

[0056] Preferably, the sealing assembly includes an annular mounting groove 901 formed inside the mounting cylinder 201. A sealing ring 902 for abutting and sealing against the outer side of the connecting cylinder 202 is installed inside the annular mounting groove 901;

[0057] It should be noted here that through the abutting effect of the sealing ring 902 inside the annular mounting groove 901 against the inner wall of the connecting cylinder 202, the sealing effect between the connecting cylinder 202 and the mounting cylinder 201 is ensured.

[0058] In this solution: A medical blood transfusion device includes the following steps:

[0059] When the medical blood transfusion device is in use, the puncture assembly for connecting to the blood bag is composed of a T-shaped rubber cylinder 301 and multiple groups of L-shaped plates 303, so that the front end of the entire puncture assembly is set in a blunt head state. Due to this blunt head state, when the puncture assembly punctures and inserts into the rubber block on the blood bag and abuts against the inner side of the blood bag, compared with a puncture tip, the blunt head can evenly distribute the puncture force on the surface of the blood bag material, reduce the local pressure, and reduce the probability of piercing the blood bag when the medical blood transfusion device punctures and connects to the blood bag;

[0060] When a blunt puncture component is used on a medical blood transfusion set to puncture and connect with a blood bag, in order to ensure rapid and effective puncture of the rubber stopper of the blood bag, the use aperture of the puncture component is contracted. During the contraction process, the connecting cylinder 202 is rotated and screwed into the interior of the mounting cylinder 201. During the screwing-in process, through the connecting action of the rotating component, when the connecting cylinder 202 is rotated and screwed into the interior of the mounting cylinder 201, it drives the annular drive disk 501 to move synchronously towards the interior of the mounting cylinder 201. During the movement process, through the telescopic connection action and the telescopic guiding action during the movement of the two groups of spline sleeves 601 and spline rods 602 on the annular drive disk 501, the annular drive disk 501 does not rotate along with the rotation of the connecting cylinder 202 while moving towards the interior of the mounting cylinder 201, further causing relative rotation between the annular drive disk 501 and the mounting cylinder 201. During the relative rotation process, through the interaction between the inclined slots 502 on the annular drive disk 501 and the transmission pins 503 respectively, each group of transmission plates 401 is driven to move under force. During the movement process of each group of transmission plates 401, through the sliding guiding action of the T-shaped rods 402, each group of transmission plates 401 under force moves towards each other and gathers. Through the movement of each group of transmission plates 401, each group of L-shaped plates 303 is driven to move towards each other and gather under force. During the gathering movement process of each group of L-shaped plates 303, through the movement of the L-shaped plates 303 and the flexible connection action of the T-shaped rubber cylinder 301, the aperture of the barrel of the T-shaped rubber cylinder 301 is reduced, realizing the contraction adjustment of the aperture of the puncture component. Through the contraction adjustment of the aperture of the puncture component and the rigid connection action of each group of L-shaped plates 303 on the puncture component, it is convenient for the barrel of the T-shaped rubber cylinder 301 on the puncture component to puncture through the rubber stopper of the blood bag, ensuring the connection efficiency with the blood bag. And when the barrel of the T-shaped rubber cylinder 301 punctures through the rubber stopper of the blood bag, because the front end of the rigid L-shaped plate 303 is protrudingly arranged on the front side of the T-shaped rubber cylinder 301, by maintaining a certain degree of rotation while puncturing and pushing each group of L-shaped plates 303, the entire T-shaped rubber cylinder 301 can quickly and effectively puncture into the interior of the blood bag with a smaller aperture, assisting subsequent blood infusion. After the barrel of the T-shaped rubber cylinder 301 is inserted into the interior of the blood bag, the connecting cylinder 202 is rotated and screwed out in the reverse direction towards the outside of the mounting cylinder 201. During the rotation and screwing-out process, through transmission, the aperture of the barrel of the T-shaped rubber cylinder 301 is increased, facilitating the efficient blood delivery operation during the subsequent blood infusion process between the blood bag and the medical blood transfusion set;

[0061] When the connecting cylinder 202 is rotated and screwed into the interior of the mounting cylinder 201, the connecting plate 701 is driven to move synchronously through the connection of the connecting cylinder 202, the annular drive disk 501 and the spline sleeve 601. During the movement of the connecting plate 701, the plug 703 is driven to move towards the mounting pipe 203 and abut against the inner wall of the mounting pipe 203 through the connection of the fixing rod 702, thereby blocking the entire blood delivery pipeline. By this blocking effect, it is avoided that blood immediately flows out when the puncture assembly punctures and connects to the blood bag, which brings inconvenience to the operation of medical staff, such as possibly soiling the operation area and contaminating gloves, etc., affecting the smooth progress of the operation. After the puncture connection, when the connecting cylinder 202 is rotated and screwed out towards the outside of the mounting cylinder 201 to increase the aperture of the T-shaped rubber cylinder 301, the connecting plate 701, the fixing rod 702 and the plug 703 are driven to reset through transmission. At this time, the pipeline is no longer blocked, facilitating normal blood infusion operation.

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0063] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical blood transfusion device, comprising: A soft delivery tube (101) and an intravenous infusion needle (102) installed at one end of the soft delivery tube (101); It is characterized by further comprising: The drip bucket assembly is used to observe the drip flow rate during blood infusion and assist in controlling the blood transfusion rate; The puncture assembly is arranged at the front end of the drip bucket assembly and is used for puncturing and connecting with the blood transfusion bag in a blunt manner; An adjustment component is arranged inside the drip bucket component and is used to adjust and control the state of the puncture component; And a control component is arranged inside the drip bucket component and is used to control the blocking and opening of the blood transfusion management according to the adjustment requirements during the adjustment process of the adjustment component.

2. A medical blood transfusion device according to claim 1, characterized in that: The drip bucket assembly comprises a mounting tube (201), the lower end of the mounting tube (201) is connected to a mounting tube (203), the other end of the soft delivery tube (101) is fixed to the end of the mounting tube (203), the upper end of the mounting tube (201) is threadedly mounted and connected to a connecting tube (202), and a sealing assembly for auxiliary sealing is provided between the mounting tube (201) and the connecting tube (202).

3. A medical blood transfusion device according to claim 2, characterized in that: The puncture assembly comprises a T-shaped rubber sleeve (301) arranged on the connecting sleeve (202), the T-shaped rubber sleeve (301) comprising a cylinder body and an annular base, the annular base being fixed inside the connecting sleeve (202), a plurality of groups of L-shaped mounting grooves (302) being provided on the T-shaped rubber sleeve (301), and each group of L-shaped mounting grooves (302) being arranged on the T-shaped rubber sleeve (301) in the form of an annular array, an L-shaped plate (303) being matched with the L-shaped mounting groove (302) being fixed thereon, and the front end of the L-shaped plate (303) being arranged in a protruding state on the front side of the T-shaped rubber sleeve (301), and a telescopic assembly for assisting the telescopic connection of the L-shaped plate (303) being arranged inside the connecting sleeve (202).

4. A medical blood transfusion device according to claim 3, characterized in that: The telescopic assembly comprises a transmission plate (401) fixed to the lower end of the L-shaped plate (303), and a plurality of groups of T-shaped rods (402) are slidably connected to the transmission plate (401), and one end of the T-shaped rod (402) is fixed to the inside of the connecting tube (202).

5. A medical blood transfusion device according to claim 4, characterized in that: The adjustment assembly comprises an annular driving disk (501) arranged inside the connecting cylinder (202); a rotating assembly for assisting the rotatable connection of the annular driving disk (501) is arranged between the annular driving disk (501) and the inner wall of the connecting cylinder (202); a plurality of groups of inclined grooves (502) are provided on the annular driving disk (501); each group of the inclined grooves (502) is slidably connected with a driving pin (503); one end of each group of the driving pins (503) is respectively fixed to each group of L-shaped plates (303); and a connecting assembly for assisting the connection is arranged between the annular driving disk (501) and the inside of the mounting cylinder (201).

6. A medical blood transfusion device according to claim 5, characterized in that: The connection assembly comprises two groups of spline sleeves (601) fixed to the lower end of the annular driving disk (501), and the two groups of spline sleeves (601) are arranged in a symmetrical state. A spline rod (602) is slidably connected to the spline sleeve (601), and one end of the spline rod (602) is fixed to the inner wall of the mounting tube (201).

7. A medical blood transfusion device according to claim 6, characterized in that: The control assembly comprises a connecting plate (701), on which two groups of mounting holes are symmetrically provided, and the connecting plate (701) is respectively sleeved and fixed on the outside of two groups of spline sleeves (601) through the two groups of mounting holes, and a plug (703) for blocking the mounting tube (203) is provided inside the mounting tube (201), and the plug (703) is located below the connecting plate (701) and is connected and fixed by a fixing rod (702).

8. A medical blood transfusion device according to claim 5, characterized in that: The rotating assembly comprises an annular groove (801) opened on the outside of the annular driving disk (501), the interior of the annular groove (801) is rotatably connected with an annular strip (802), and the annular strip (802) is fixed inside the connecting tube (202).

9. A medical blood transfusion device according to claim 2, characterized in that: The sealing assembly comprises an annular installation groove (901) provided inside the installation tube (201), and a sealing ring (902) for sealing against the outside of the connecting tube (202) is installed inside the annular installation groove (901).

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