Intraoperative intravenous administration device

Abstract

The utility model belongs to the technical field of medical instruments, particularly relates to an intraoperative intravenous administration device, and aims to solve the problems that an existing infusion administration device lacks a corresponding emergency administration operation area, cannot be well applied to emergency treatment and the like, and is inconvenient to disinfect an interface part. Comprising a dosing device pipeline, an infusion apparatus connector and a three-way pipe connector, an injection needle can be directly used for puncturing a rubber plug cap to inject medicine into the dosing device pipeline, rapid dosing operation is achieved, the arranged single-way membrane can ensure that liquid medicine does not flow back when infusion and dosing are conducted through an infusion branch pipe, and the aim of fast dosing is achieved. A plugging cover is movably clamped to the outer side of the three-way pipe connector, a liquid storage cavity is formed in a cover body of the plugging cover, medical disinfection alcohol is injected into the liquid storage cavity, and an outer wall disinfection cotton ring and an end disinfection cotton ring are connected to the inner side wall of the plugging cover and can disinfect the outer wall of the three-way pipe connector and the edge of the opening end. The pollution risk existing in a traditional infusion connector is avoided.

Description

Technical Field

[0001] The utility model relates to a drug dispenser, in particular to an intraoperative intravenous drug dispenser, belonging to the technical field of medical devices. Background Technique

[0002] Intravenous infusion, as one of the core means of clinical treatment, is widely used in fields such as drug delivery, nutritional support, and emergency resuscitation. Intravenous infusion therapy is a commonly used clinical treatment method, which refers to delivering drugs, supplementing body fluids, blood, nutrients, etc. through veins to achieve the purposes of correcting water and electrolyte disorders, supplementing blood volume, as well as nutritional support, drug treatment, and rescue; it is currently one of the most commonly used, direct, and effective clinical treatment means. During the operation, rapid blood transfusion or infusion of trauma and critically ill patients through an intravenous drug dispenser is an important guarantee for the smooth progress of the operation and also the key to the success or failure of the operation.

[0003] In the prior art, for example, a step-by-step drug delivery type intravenous infusion set disclosed in the patent with publication number CN201333224Y includes an infusion bottle, an infusion tube, a Murphy's dropper, and a flow regulator clamp, which avoids the occurrence of various adverse infusion reactions caused by mixing multiple drugs in the same infusion bottle and realizes the purpose of separate infusion of various drugs. Another example is a connector for facilitating multi-channel drug delivery and infusion for intravenous anesthesia disclosed in the patent with publication number CN220002742U, which includes a connecting block. The connecting block is a hollow structure, and a first connector is connected to the connecting block through a connecting tube. The inner circle of the first connector is a threaded structure for spiral connection with an indwelling needle tube; compared with the existing hard-connected infusion structure of a three-way combination, this technical solution is an integral structure and a flexible connection, with the advantages of convenient connection and use and easy clinical maintenance. In the design, the current clinically common infusion pipeline interface standard is adopted, and it is easy to transform the product technically, with a relatively low production cost and good market application prospects. However, in actual operation and use, although the existing infusion and drug delivery devices can add drugs and give injections during the infusion process, they often directly connect a syringe to the branch interface for adding drugs. The existing branches are relatively thin, resulting in too slow a flow rate during drug addition and unable to achieve the purpose of timely and rapid drug addition. For some urgent drug administration situations, the existing drug delivery devices lack a corresponding emergency drug administration operation area and cannot be well applied to emergency situations such as first aid. Moreover, in terms of disinfection treatment of the interface part, the existing infusion and drug delivery devices mainly disinfect by manually clamping an alcohol cotton piece, which is cumbersome to operate and has insufficient compliance. Clinical observations show that only 62% of nurses strictly complete the disinfection steps, bringing certain potential hazards to the actual infusion and drug delivery operations. Content of the Utility Model

[0004] The present utility model provides an intraoperative intravenous drug injector to solve the problems that existing infusion drug delivery devices lack corresponding emergency drug delivery operation areas, cannot be well applied to first aid and emergency situations, and are not convenient for disinfecting the interface part.

[0005] The present utility model realizes the above object through the following technical solutions: An intraoperative intravenous drug injector includes a drug injector pipeline. One end of the drug injector pipeline is communicated with a cannula needle connector, and the other end of the drug injector pipeline is communicated with an infusion set connector. One side of the infusion set connector is communicated with an infusion branch pipe. The inner diameter of the infusion branch pipe is the same as that of the drug injector pipeline, and the other end of the infusion branch pipe is communicated with a three-way pipe connector.

[0006] A rubber plug cap is embedded at the top end of the infusion set connector. A branch pipe connector is arranged on one side of the infusion set connector, and a one-way diaphragm is arranged inside the branch pipe connector.

[0007] A sealing cover is movably clamped outside the three-way pipe connector. A liquid storage cavity is opened on the cover body of the sealing cover. Medical disinfected alcohol is injected into the liquid storage cavity. An outer wall disinfected cotton ring and an end disinfected cotton ring are connected to the inner side wall of the sealing cover.

[0008] A threaded docking cavity is opened inside the cannula needle connector. The cannula needle connector is threadedly docked with the cannula needle through the threaded docking cavity, and a sealing gasket is arranged at the bottom of the threaded docking cavity.

[0009] As a further scheme of the present utility model: An arc-shaped diversion channel is opened inside the branch pipe connector. The included angle between the arc-shaped diversion channel and the inner cavity of the infusion set connector is 10 - 20°.

[0010] As a further scheme of the present utility model: An outer expansion cavity is also opened inside the branch pipe connector. The outer expansion cavity is communicated with the arc-shaped diversion channel, and the opening position of the outer expansion cavity is located at one end of the arc-shaped diversion channel close to the infusion set connector. The one-way diaphragm is connected to the stepped table surface of the outer expansion cavity and the arc-shaped diversion channel.

[0011] As a further scheme of the present utility model: A docking outer edge is arranged on one side surface of the one-way diaphragm close to the arc-shaped diversion channel. The docking outer edge is located on the upper half of the diaphragm body of the one-way diaphragm. A plurality of outward protruding groove positions are opened on the side surface of the one-way diaphragm close to the arc-shaped diversion channel. A folding groove position is opened on the side surface of the one-way diaphragm far from the arc-shaped diversion channel. And the outward protruding groove position in the middle part is arranged vertically, and the bottom ends of the outward protruding groove positions on both sides are arranged in an outward inclined shape.

[0012] As a further scheme of the present utility model: A Robert clip is movably sleeved on the pipe body of the infusion branch pipe.

[0013] As a further solution of the utility model: One end of the outer wall of the tee joint connected to the infusion branch pipe is fixedly connected with a handheld part, and the other end of the tee joint is provided with an insertion inner cavity, and a sealing rubber ring is embedded in the cavity wall of the insertion inner cavity.

[0014] As a further solution of the utility model: An anti-leakage liquid film is fixedly connected in the insertion inner cavity opened by the tee joint, and a cross crack is opened at the center of the anti-leakage liquid film.

[0015] As a further solution of the utility model: A plurality of positioning protrusions are connected to the inner wall of the plugging cover, and the connection positions of the positioning protrusions are evenly distributed in a ring shape.

[0016] As a further solution of the utility model: A liquid injection rubber stopper is embedded at the end of the plugging cover, and one end of the liquid injection rubber stopper is located in the liquid storage cavity.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. By providing a medicator pipeline, a cannula needle joint, an infusion set joint, an infusion branch pipe and a tee joint, the inner pipe diameters of the infusion branch pipe and the medicator pipeline are the same. When using this medicator, it can be connected to the cannula needle inserted into the patient's blood vessel through the cannula needle joint and connected to a three-way valve through the tee joint, so as to connect this medicator to the infusion pipeline through the three-way valve, and then the infusion and medication operation can be carried out on the patient. Moreover, the inner pipe diameters of the set infusion branch pipe and the medicator pipeline are the same, which can improve the infusion and medication rate;

[0019] 2. A rubber plug cap is embedded at the top of the infusion set joint provided by the utility model. A branch joint is arranged on one side of the infusion set joint, and a one-way membrane is arranged in the branch joint. When infusion and medication are carried out, in case of an emergency, a syringe needle can directly pierce the rubber plug cap to inject the drug into the medicator pipeline to realize rapid medication operation. The set one-way membrane can ensure that when infusion and medication are carried out through the infusion branch pipe, the liquid medicine will not flow back, and when injecting the liquid medicine through the rubber plug cap part, the injected liquid medicine will not flow into the infusion branch pipe and will not affect the infusion and medication of the infusion branch pipe. Simultaneous medication can be realized without mutual influence, and it has a good effect on controlling the flow of the liquid medicine;

[0020] 3. A sealing cover is movably clamped outside the three-way pipe joint of the present utility model. A liquid storage cavity is provided on the cover body of the sealing cover, and medical disinfection alcohol is filled in the liquid storage cavity. An outer wall disinfection cotton ring and an end disinfection cotton ring are connected to the inner side wall of the sealing cover. The provided sealing cover can play a certain protective role for the three-way pipe joint. And during the actual use process, since the three-way rotary valve needs to be connected to the three-way pipe joint irregularly, every time the sealing cover is closed, the disinfection alcohol in the liquid storage cavity can seep out through the outer wall disinfection cotton ring, so as to disinfect the outer wall of the three-way pipe joint. Moreover, the disinfection alcohol in the liquid storage cavity can also seep out through the end disinfection cotton ring, so as to disinfect the edge part of the opening end of the three-way pipe joint, thus avoiding the pollution risk existing in the traditional infusion interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 for the present utility model Figure 1 is a schematic diagram of the structure at A in;

[0023] Figure 3 for the present utility model Figure 1 is a schematic diagram of the structure at B in;

[0024] Figure 4 is a schematic diagram of the sectional structure of the branch pipe joint of the present utility model;

[0025] Figure 5 is a schematic diagram of one side of the single-pass membrane of the present utility model with an outward convex groove;

[0026] Figure 6 is a schematic diagram of one side of the single-pass membrane of the present utility model with a folding groove;

[0027] Figure 7 for the present utility model Figure 1 is a schematic diagram of the structure at C in;

[0028] Figure 8 is a schematic diagram of the sectional structure of the three-way pipe joint of the present utility model;

[0029] Figure 9 for the present utility model Figure 8 is a schematic diagram of the sectional structure at D in;

[0030] Figure 10 is a schematic diagram of the sectional structure of the sealing cover of the present utility model.

[0031] In the figure: 1. Administration device pipeline; 2. Trocar connector; 21. Threaded docking cavity; 22. Sealing washer; 3. Infuser connector; 31. Rubber plug cap; 32. Branch pipe connector; 33. Outer expansion cavity; 34. One-way diaphragm; 35. Docking outer edge; 36. Outer convex groove position; 37. Folding groove position; 38. Arc-shaped diversion channel; 4. Infusion branch pipe; 5. Three-way pipe connector; 51. Holding part; 52. Insertion inner cavity; 53. Sealing rubber ring; 54. Anti-leakage liquid diaphragm; 55. Cross crack; 6. Robert clamp; 7. Sealing cover; 71. Liquid storage cavity; 72. Outer wall disinfection cotton ring; 73. End disinfection cotton ring; 74. Positioning protrusion; 75. Injection rubber plug. 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] As Figures 1 to 10 shown, an intraoperative intravenous administration device includes an administration device pipeline 1. One end of the administration device pipeline 1 is communicated with a trocar connector 2, and the other end of the administration device pipeline 1 is communicated with an infuser connector 3. One side of the infuser connector 3 is communicated with an infusion branch pipe 4. The inner diameter of the infusion branch pipe 4 is the same as that of the administration device pipeline 1, and the other end of the infusion branch pipe 4 is communicated with a three-way pipe connector 5. When using this administration device, it can be connected to the trocar inserted into the patient's blood vessel through the trocar connector 2 and connected to a three-way stopcock through the three-way pipe connector 5, so as to connect this administration device to the infusion pipeline through the three-way stopcock, and then the infusion administration operation can be carried out on the patient. And the set infusion branch pipe 4 has the same inner diameter as the administration device pipeline 1, which can improve the infusion administration rate;

[0035] A rubber plug cap 31 is embedded at the top of the infuser connector 3. A branch pipe connector 32 is arranged on one side of the infuser connector 3, and a one-way diaphragm 34 is arranged in the branch pipe connector 32. When performing infusion administration, if an emergency occurs, the injection needle can directly pierce the rubber plug cap 31 to inject the drug into the administration device pipeline 1 to achieve rapid administration operation. The set one-way diaphragm 34 can ensure that when performing infusion administration through the infusion branch pipe 4, the liquid medicine will not flow back, and when injecting the liquid medicine through the rubber plug cap 31 part, the injected liquid medicine will not flow into the infusion branch pipe 4 and will not affect the infusion administration of the infusion branch pipe 4. It can achieve simultaneous administration without mutual influence and has a good effect on controlling the flow of the liquid medicine;

[0036] A sealing cover 7 is movably clamped on the outer side of the tee joint 5. A liquid storage cavity 71 is formed in the cover body of the sealing cover 7, and medical disinfection alcohol is filled in the liquid storage cavity 71. An outer wall disinfection cotton ring 72 and an end disinfection cotton ring 73 are connected to the inner side wall of the sealing cover 7. The provided sealing cover 7 can play a certain protective role for the tee joint 5. And in the actual use process, since the three-way valve needs to be connected to the tee joint 5 irregularly, when the sealing cover 7 is closed each time, the disinfection alcohol in the liquid storage cavity 71 can seep out through the outer wall disinfection cotton ring 72, so as to disinfect the outer wall of the tee joint 5. And the disinfection alcohol in the liquid storage cavity 71 can also seep out through the end disinfection cotton ring 73, so as to disinfect the edge part of the opening end of the tee joint 5, so as to avoid the pollution risk existing in the traditional infusion interface.

[0037] Embodiment 2

[0038] Improved on the basis of Embodiment 1:

[0039] As Figure 1 and Figure 2 shown, a threaded docking cavity 21 is formed in the cannula needle adapter 2. The cannula needle adapter 2 is threadedly docked with the cannula needle through the threaded docking cavity 21. A sealing gasket 22 is arranged at the bottom of the threaded docking cavity 21. The firmness of the connection between the cannula needle adapter 2 and the cannula needle can be ensured by means of threaded engagement connection. And during docking, the sealing performance of the connection part can be ensured through the function of the sealing gasket 22, so as to avoid the leakage of the liquid medicine during the administration process.

[0040] As Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, an arc-shaped diversion channel 38 is formed in the branch adapter 32. The included angle between the arc-shaped diversion channel 38 and the inner cavity of the infusion set adapter 3 is 10-20°. The liquid medicine conveyed through the infusion branch pipe 4 can be input into the administration pipeline 1 through the provided arc-shaped diversion channel 38. And the liquid outlet end of the arc-shaped diversion channel 38 adopts a specific angle, which can reduce the impact and vortex phenomena during the flow of the liquid medicine and improve the overall administration efficiency.

[0041] Further, an outwardly expanding cavity 33 is also formed inside the branch pipe joint 32. The outwardly expanding cavity 33 communicates with the arc-shaped diversion channel 38, and the position where the outwardly expanding cavity 33 is formed is at one end of the arc-shaped diversion channel 38 close to the infusion connector 3. The one-way diaphragm 34 is connected to the stepped table surface between the outwardly expanding cavity 33 and the arc-shaped diversion channel 38, so as to provide an installation space for the one-way diaphragm 34 through the formed outwardly expanding cavity 33, and the outer edge part of the one-way diaphragm 34 can be limited and attached to the stepped table surface between the outwardly expanding cavity 33 and the arc-shaped diversion channel 38. When injecting medicine through the rubber plug cap 31, the one-way diaphragm 34 can block the arc-shaped diversion channel 38, so that the injected medicine will not flow into the infusion branch pipe 4 either.

[0042] Further, a docking outer edge 35 is provided on one side of the one-way diaphragm 34 close to the arc-shaped diversion channel 38. The docking outer edge 35 is located on the upper half of the one-way diaphragm 34. A plurality of outwardly protruding groove positions 36 are formed on the side of the one-way diaphragm 34 close to the arc-shaped diversion channel 38, and a folding groove position 37 is formed on the side of the one-way diaphragm 34 far from the arc-shaped diversion channel 38. The outwardly protruding groove positions 36 in the middle part are arranged vertically, and the bottom ends of the outwardly protruding groove positions 36 on both sides are arranged in an outwardly inclined shape. When the medicine conveyed by the infusion branch pipe 4 flows into the arc-shaped diversion channel 38, the unconnected part at the bottom of the one-way diaphragm 34 can be pushed outwards, and the lower half of the one-way diaphragm 34 can be folded outwards along the folding groove position 37. At the same time, the upper half of the one-way diaphragm 34 can be deformed under the action of the outwardly protruding groove positions 36, so that the medicine can flow in a large flow rate, that is, it will not affect the medicine delivery efficiency. At the same time, the cooperation of the outwardly protruding groove positions 36 and the folding groove position 37 can make the medicine flowing out of the arc-shaped diversion channel 38 flow along the pipe body of the medicine delivery pipe 1, and will not affect the flow of the medicine injected through the rubber plug cap 31.

[0043] As Figure 1 shown, a Robert clip 6 is movably sleeved on the pipe body of the infusion branch pipe 4. The opening and closing of the infusion branch pipe 4 can be controlled through the Robert clip 6, so as to play a role in blocking the infusion branch pipe 4. The operation is simple and convenient, and can be easily completed with one hand.

[0044] As Figure 1 、 Figure 7 、 Figure 8 and Figure 9 shown, a handheld part 51 is fixedly connected to the outer wall of one end of the three-way pipe joint 5 communicating with the infusion branch pipe 4. An insertion inner cavity 52 is formed at the other end of the three-way pipe joint 5, and a sealing rubber ring 53 is embedded in the cavity wall of the insertion inner cavity 52. Medical staff can hold the handheld part 51 by hand to fix the three-way pipe joint 5, and then it is convenient to dock the three-way valve with the three-way pipe joint 5. When the three-way valve is inserted into the insertion inner cavity 52, the sealing performance of the connection can be ensured through the action of the sealing rubber ring 53, and the leakage of the medicine can be prevented.

[0045] Further, an anti-leakage liquid film 54 is fixedly connected inside the insertion cavity 52 opened in the three-way pipe joint 5. A cross-shaped crack 55 is opened at the center of the anti-leakage liquid film 54. When the three-way rotary valve is docked with the three-way pipe joint 5, one end of the three-way rotary valve inserted into the insertion cavity 52 can push up the anti-leakage liquid film 54, so that one end of the three-way rotary valve inserted into the insertion cavity 52 passes through the cross-shaped crack 55 to achieve the connection of the docking part. When the three-way rotary valve is pulled out, the cross-shaped crack 55 opened at the center of the anti-leakage liquid film 54 returns to the initial closed state, which can prevent the liquid medicine from dripping out.

[0046] As Figure 1 , Figure 7 and Figure 10 shown, a plurality of positioning protrusions 74 are connected to the inner wall of the cover of the plugging cover 7, and the connection positions of the positioning protrusions 74 are evenly distributed in a ring shape. When the plugging cover 7 is docked with the three-way pipe joint 5, the outer wall of the three-way pipe joint 5 can be abutted by the plurality of positioning protrusions 74 to ensure the firmness of the connection between the two, so that the plugging cover 7 is not easily detached.

[0047] Further, a liquid injection rubber plug 75 is embedded at the end of the plugging cover 7, and one end of the liquid injection rubber plug 75 is located in the liquid storage cavity 71. The liquid injection rubber plug 75 can be pierced by an injection needle to inject disinfectant alcohol into the liquid storage cavity 71, that is, a certain amount of disinfectant alcohol can be stored in the liquid storage cavity 71. Further, it can be ensured that when the plugging cover 7 is opened and closed multiple times, the outer wall of the three-way pipe joint 5 and the edge part of the opening end can be disinfected with alcohol, and it is convenient to replenish the disinfectant alcohol into the liquid storage cavity 71.

[0048] Working principle: It is connected to the trocar inserted into the patient's blood vessel through the trocar connector 2 and connected to the three-way valve through the three-way pipe connector 5, so as to connect the medicator to the infusion pipeline through the three-way valve, and then the infusion and medication operation can be carried out on the patient. When infusing and medicating, in case of an emergency, the injection needle can directly pierce through the rubber stopper 31 to inject the drug into the medicator pipeline 1 to achieve rapid medication operation. The single-pass diaphragm 34 provided can ensure that when infusing and medicating through the infusion branch pipe 4, the liquid medicine will not flow back, and when injecting the medicine through the rubber stopper 31 part, the injected liquid medicine will not flow into the infusion branch pipe 4, which will not affect the infusion and medication of the infusion branch pipe 4. Simultaneous medication can be realized without mutual influence, which has a good effect on controlling the flow of the liquid medicine. Moreover, the inner pipe diameters of the infusion branch pipe 4 and the medicator pipeline 1 are the same, which can improve the infusion and medication rate. Each time the sealing cover 7 is closed, the disinfected alcohol in the liquid storage cavity 71 can seep out through the outer wall disinfected cotton ring 72, and then the outer wall of the three-way pipe connector 5 can be disinfected. In addition, the disinfected alcohol in the liquid storage cavity 71 can seep out through the end disinfected cotton ring 73, and then the edge part of the opening end of the three-way pipe connector 5 can be disinfected to avoid the pollution risk existing in the traditional infusion interface.

[0049] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0050] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intraoperative intravenous drug delivery device, comprising a drug delivery device pipeline (1), characterized in that: One end of the drug delivery device pipeline (1) is connected to a trocar needle connector (2), the other end of the drug delivery device pipeline (1) is connected to an infusion device connector (3), one side of the infusion device connector (3) is connected to an infusion branch pipe (4), the infusion branch pipe (4) has the same inner diameter as the drug delivery device pipeline (1), and the other end of the infusion branch pipe (4) is connected to a three-way pipe connector (5); A rubber plug cap (31) is embedded in the top end of the infusion device connector (3), a branch pipe connector (32) is provided on one side of the infusion device connector (3), and a single-pass diaphragm (34) is provided in the branch pipe connector (32); A blocking cover (7) is movably engaged on the outer side of the three-way pipe joint (5); a cover body of the blocking cover (7) is provided with a liquid storage cavity (71), and the liquid storage cavity (71) is filled with medical disinfecting alcohol; an outer wall disinfecting cotton ring (72) and an end disinfecting cotton ring (73) are connected to the inner side wall of the blocking cover (7).

2. The intraoperative intravenous drug delivery device according to claim 1, characterized in that: A threaded docking cavity (21) is provided in the trocar connector (2), and the trocar connector (2) is threadably docked with the trocar via the threaded docking cavity (21), and a sealing gasket (22) is provided at the bottom of the threaded docking cavity (21).

3. The intraoperative intravenous drug delivery device according to claim 1, characterized in that: An arc-shaped flow guiding channel (38) is provided in the branch pipe joint (32), and the angle between the arc-shaped flow guiding channel (38) and the inner cavity of the infusion set joint (3) is 10-20°.

4. The intraoperative intravenous drug delivery device according to claim 3, characterized in that: An outer expansion cavity (33) is also provided in the branch pipe joint (32), the outer expansion cavity (33) being in communication with the arc-shaped flow guiding channel (38), and the opening position of the outer expansion cavity (33) is located at one end of the arc-shaped flow guiding channel (38) close to the infusion set joint (3), and the single-pass diaphragm (34) is connected to the stepped surface between the outer expansion cavity (33) and the arc-shaped flow guiding channel (38).

5. The intraoperative intravenous drug delivery device according to claim 4, characterized in that: A butt joint outer edge (35) is provided on a side of the single-pass diaphragm (34) close to the arc-shaped flow guiding channel (38), and the butt joint outer edge (35) is located on the upper half of the single-pass diaphragm (34). A plurality of external convex grooves (36) are provided on a side of the single-pass diaphragm (34) close to the arc-shaped flow guiding channel (38), and a folding groove (37) is provided on a side of the single-pass diaphragm (34) away from the arc-shaped flow guiding channel (38), and the external convex grooves (36) located in the middle are arranged vertically, and the bottom ends of the external convex grooves (36) located on both sides are arranged outwardly inclined.

6. The intraoperative intravenous drug delivery device according to claim 1, characterized in that: The infusion branch tube (4) is movably provided with a Robert clamp (6).

7. The intraoperative intravenous drug delivery device according to claim 1, characterized in that: A hand-held portion (51) is fixedly connected to the outer wall of one end of the three-way pipe joint (5) that is connected to the infusion branch pipe (4), and an insertion cavity (52) is provided at the other end of the three-way pipe joint (5), wherein a sealing rubber ring (53) is embedded in the cavity wall of the insertion cavity (52).

8. The intraoperative intravenous drug delivery device according to claim 7, characterized in that: An anti-liquid seepage membrane (54) is fixedly connected to the insertion inner cavity (52) provided in the three-way pipe joint (5), and a cross crack (55) is provided at the center of the anti-liquid seepage membrane (54).

9. The intraoperative intravenous drug delivery device according to claim 1, characterized in that: A plurality of positioning protrusions (74) are connected to the inner wall of the blocking cover (7), and the connection positions of the positioning protrusions (74) are evenly distributed in a ring shape.

10. The intraoperative intravenous drug delivery device according to claim 9, characterized in that: A liquid injection rubber plug (75) is embedded in the end of the sealing cover (7), and one end of the liquid injection rubber plug (75) is located in the liquid storage cavity (71).

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