An auxiliary drug delivery device for clinical treatment in oncology

Abstract

The present invention discloses an auxiliary drug administration device for oncology clinical treatment, including a housing. One side of the housing is provided with an airbag. A storage cavity is opened in the middle of the inner cavity of the housing. A rotating rod is rotatably connected to the middle of the inner cavity of the storage cavity. A V-shaped groove is opened on the outer wall of the housing near the airbag. A driving rod is slidably connected to the middle of the rotating rod. A driving mechanism for driving the movement of the rotating rod is arranged on the side of the outer wall of the driving rod away from the storage cavity. A limiting mechanism for limiting the rotating rod is arranged on the outer wall of the rotating rod. When the driving mechanism approaches the position where the storage cavity is located, the limiting mechanism horizontally moves away from the side of the rotating rod close to the driving mechanism. In the present invention, by rotating the knob counterclockwise, the step-by-step or one-time pressurization of the infusion bag can be continuously completed. Pressing the knob near the placement cavity can complete the step-by-step pressure relief of the infusion bag. Pulling the knob away from the placement cavity can complete the one-time pressure relief of the infusion bag.

Description

Technical Field

[0001] The present invention relates to the technical field of medical drug delivery devices, and specifically to an auxiliary drug delivery device for clinical treatment in oncology departments. Background Art

[0002] The methods of tumor chemotherapy include various ways, such as intravenous injection, oral administration of drugs, and local treatment, etc. For intravenous injection, chemotherapy drugs directly enter the blood circulation through the vein and are quickly distributed throughout the body, which is suitable for most types of cancers, especially those that require systemic treatment. Local treatment is that chemotherapy drugs are directly injected into the tumor or adjacent areas to kill cancer cells through local high concentration.

[0003] In the prior art during infusion, the infusion bag is pressurized to increase the flow rate of chemotherapy drugs, so that the chemotherapy drugs can quickly act on cancer cells, thereby relieving and treating the patient's pain. However, when pressurizing, usually the airbag is directly squeezed to indirectly squeeze the infusion bag, so as to increase the flow rate of chemotherapy drugs. But it is difficult to accurately control the size of the pressure by hand squeezing the airbag, and it is also difficult to continuously pressurize the chemotherapy drugs. Summary of the Invention

[0004] The purpose of the present invention is to provide an auxiliary drug delivery device for clinical treatment in oncology departments to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An auxiliary drug delivery device for clinical treatment in oncology departments includes a housing. One side of the housing is provided with an airbag. A storage cavity is opened in the middle of the inner cavity of the housing. A rotating rod is rotatably connected to the middle of the inner cavity of the storage cavity. A V-shaped groove is opened on the outer wall of the housing near the airbag. A driving rod is slidably connected to the middle of the rotating rod. A driving mechanism for driving the movement of the rotating rod is arranged on the outer wall of the driving rod away from the storage cavity. A limiting mechanism for limiting the rotating rod is arranged on the outer wall of the rotating rod. When the driving mechanism approaches the position where the storage cavity is located, the limiting mechanism horizontally moves away from the side of the rotating rod close to the driving mechanism.

[0007] As a further solution of the present invention: The middle of the end of the airbag away from the housing is fixedly connected with an air guide tube. The end of the airbag away from the air guide tube passes through the V-shaped groove and is fixedly connected to the outer wall of the rotating rod. The end of the air guide tube away from the airbag is fixedly connected with symmetric pressure bags. An installation plate is fixedly connected to the outer wall of the pressure bag. A fixed frame is fixedly connected to the outer wall of the airbag away from the housing. Symmetric balance rods are slidably connected to the side of the fixed frame close to the housing. The end of the balance rod away from the fixed frame is fixedly connected to the outer wall of the housing.

[0008] As a further solution of the present invention: The limiting mechanism includes a limiting plate. An installation cavity is opened at one end of the inner cavity of the housing close to the driving rod. The limiting plate is fixedly connected to one end of the outer wall of the rotating rod close to the driving rod. A ring groove is opened in the middle of the outer wall of the limiting plate. Symmetrical limiting grooves are opened in the inner cavity of the ring groove. A slider is arranged on the side of the limiting groove away from the center of the rotating rod. The side of the slider away from the limiting plate is horizontally slidably connected to the inner cavity side wall of the installation cavity.

[0009] As a further solution of the present invention: A limiting block is vertically slidably connected to the side of the inner cavity of the slider close to the limiting plate. The lower end of the limiting block is clamped in the inner cavity of the limiting groove. An inclined surface is opened on one side of the lower end of the limiting block. An arc edge is opened on the side of the inner cavity of the limiting groove close to the inclined surface. The position of the arc edge corresponds to the inclined surface. There is a gap between the inclined surface and the arc edge.

[0010] As a further solution of the present invention: The driving mechanism includes a knob. A driving cavity is opened in the middle of the inner cavity of the rotating rod close to the limiting plate. The outer wall of the driving rod is slidably connected to the inner cavity of the driving cavity. A driven block is slidably connected to the middle of the end of the driving rod away from the rotating rod. The end of the driven block away from the driving rod is fixedly connected to the middle of the knob. The diameter of the knob is larger than the diameter of the driving rod. One end of the knob close to the rotating rod is sleeved on the outer wall of the driving rod.

[0011] As a further solution of the present invention: A sleeve is sleeved on the outer wall of the driving rod close to the knob. The sleeve is slidably connected to the housing. A ring plate is fixedly connected to the side of the sleeve away from the knob. Symmetrical connecting rods are fixedly connected to the side of the ring plate away from the sleeve. Both the ring plate and the connecting rods are slidably connected to the inner cavity side wall of the installation cavity. The end of the connecting rod away from the ring plate is fixedly connected to the middle of the side of the slider close to the knob.

[0012] As a further solution of the present invention: Symmetrical support rods are fixedly connected to the side of the outer wall of the driving rod away from the knob. Transverse grooves slidably matched with the support rods are opened in the inner cavity of the driving cavity. An inclined groove is opened between two adjacent transverse grooves. One end of the inclined groove is connected to the middle of one of the two adjacent transverse grooves, and the other end is connected to the end of the other transverse groove away from the driving rod.

[0013] As a further solution of the present invention: The inclined groove is inclined towards the position where the knob is located. A groove is opened on the side of the connection between the middle of the inclined groove and the transverse groove away from the knob. A guide plate is rotated in the inner cavity of the groove close to the inclined groove. The inclination direction of the guide plate is the same as that of the inclined groove.

[0014] As a further solution of the present invention: symmetric traction rods are slidably connected to the middle of one side of the sleeve close to the knob. A traction rope is fixedly connected to the middle of the upper end of the limiting block. One end of the traction rope away from the limiting block passes through one side of the limiting block clamping the knob, and sequentially passes through the inner cavities of the connecting rod, the annular plate and the traction rope and is fixedly connected to the end of the traction rod away from the knob.

[0015] As a further solution of the present invention: the end of the traction rod away from the traction rope is rotatably connected to the side wall of the knob. The ends of the symmetric traction rods away from the traction rope are jointly fixedly connected with a circular ring, and the circular ring is rotatably connected to the inner cavity of the knob.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The gas in the inner cavity of the extrusion airbag will enter the inner cavity of the pressure bag through the air guide pipe, thereby squeezing the infusion bag, and then completing the pressurization of the chemotherapy drug in the inner cavity of the infusion bag. By using the limiting mechanism to limit and fix the rotating rod, the state of the airbag after being squeezed can be kept fixed, so that the pressure in the inner cavity of the pressure bag is kept stable, and then the chemotherapy drug is continuously subjected to stable pressurization; by rotating the knob counterclockwise, the step-by-step or one-time pressurization of the infusion bag can be continuously completed. Pressing the knob near the position where the placement cavity is located can complete the step-by-step pressure relief of the infusion bag, and pulling the knob away from the position where the placement cavity is located can complete the one-time pressure relief of the infusion bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the housing in the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the housing in the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the placement cavity in the present invention.

[0022] Figure 5 In the present invention Figure 4 is a schematic diagram of the structure of area A.

[0023] Figure 6 It is a schematic diagram of the structure of the limiting plate in the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the driving cavity in the present invention.

[0025] Figure 8 In the present invention Figure 6 is a schematic diagram of the structure of area B.

[0026] Figure 9 For the present invention Figure 6 is a schematic structural diagram of area C in the present invention.

[0027] Figure 10 is a schematic structural diagram of the housing in the present invention.

[0028] In the figure: 1. housing; 2. airbag; 3. air duct; 4. mounting plate; 5. pressure bag; 6. fixed frame; 7. balance bar; 8. knob; 9. housing; 10. V-shaped groove; 11. storage cavity; 12. rotating rod; 13. driving cavity; 14. placement cavity; 15. driving rod; 16. limiting plate; 17. annular plate; 18. connecting rod; 19. towing rope; 20. slider; 21. limiting block; 22. annular groove; 23. limiting groove; 24. transverse groove; 25. inclined groove; 26. support rod; 27. groove; 28. guiding plate; 29. towing rod; 30. driven block; 31. inclined surface; 32. arc edge; 33. circular ring. Specific embodiments

[0029] Please refer to Figures 1-3 , in an embodiment of the present invention, an auxiliary drug delivery device for oncology clinical treatment includes a housing 1. An airbag 2 is arranged on one side of the housing 1. A storage cavity 11 is opened in the middle of the inner cavity of the housing 1. A rotating rod 12 is rotatably connected to the middle of the inner cavity of the storage cavity 11. A V-shaped groove 10 is opened on the outer wall of the housing 1 near the airbag 2. A driving rod 15 is slidably connected to the middle of the rotating rod 12. A driving mechanism for driving the rotating rod 12 to move is arranged on the outer wall of the driving rod 15 away from the storage cavity 11. A limiting mechanism for limiting the rotating rod 12 is arranged on the outer wall of the rotating rod 12. When the driving mechanism approaches the position where the storage cavity 11 is located, the limiting mechanism horizontally moves away from the side of the rotating rod 12 close to the driving mechanism.

[0030] One end of the airbag 2 away from the housing 1 is fixedly connected to the air duct 3 in the middle. One end of the airbag 2 away from the air duct 3 passes through the V-shaped groove 10 and enters the inner cavity of the storage cavity 11, and is fixedly connected to the outer wall of the rotating rod 12. When the rotating rod 12 rotates, the airbag 2 will be continuously wound around the outer wall of the rotating rod 12, thereby squeezing the gas in the inner cavity of the airbag 2. One end of the air duct 3 away from the airbag 2 is fixedly connected with symmetric pressure bags 5. The outer wall of the pressure bag 5 is fixedly connected with a mounting plate 4. During use, the pressure bag 5 can be fixed to the outer wall of the infusion bag by tape, rope or cloth strip, etc. After the airbag 2 is squeezed, the gas in the inner cavity of the airbag 2 will enter the inner cavity of the pressure bag 5 through the air duct 3, thereby squeezing the infusion bag, and then completing the pressurization of the chemotherapy drug in the inner cavity of the infusion bag, facilitating the chemotherapy drug to enter the patient's body more quickly. And by using the limiting mechanism to limit and fix the rotating rod 12, the state of the airbag 2 after being squeezed can be kept fixed, thereby preventing the gas in the inner cavity of the pressure bag 5 from flowing back into the inner cavity of the airbag 2, keeping the pressure in the inner cavity of the pressure bag 5 stable, and further enabling the chemotherapy drug to continuously receive stable pressurization, so that the chemotherapy drug can maintain the flow rate after pressurization and continuously enter the patient's body after stable pressurization, without repeatedly squeezing the outer wall of the airbag 2 to pressurize the chemotherapy drug.

[0031] Please refer to Figure 6 and Figure 8 , the limiting mechanism includes a limiting plate 16. An installation cavity 14 is opened at one end of the inner cavity of the housing 1 close to the driving rod 15. The limiting plate 16 is located in the inner cavity of the installation cavity 14. The limiting plate 16 is fixedly connected to one end of the outer wall of the rotating rod 12 close to the driving rod 15. A ring groove 22 is opened in the middle of the outer wall of the limiting plate 16. Symmetric limiting grooves 23 are opened in the inner cavity of the ring groove 22. A slider 20 is arranged on one side of the limiting groove 23 away from the center of the rotating rod 12. One side of the slider 20 away from the limiting plate 16 is horizontally slidably connected to the inner cavity side wall of the installation cavity 14. The slider 20 is elastically connected to the inner cavity side wall of the installation cavity 14 through a spring on one side away from the driving rod 15. Through the setting of the spring, the position of the slider 20 can correspond to the limiting groove 23 when it is not subjected to external force. A limiting block 21 is vertically slidably connected to one side of the inner cavity of the slider 20 close to the limiting plate 16. One end of the limiting block 21 away from the limiting plate 16 is elastically connected to the top of the inner cavity of the slider 20 through a spring. The lower end of the limiting block 21 is clamped in the inner cavity of the limiting groove 23. One side of the lower end of the limiting block 21 is provided with an inclined surface 31. An arc edge 32 is opened on one side of the inner cavity of the limiting groove 23 close to the inclined surface 31. The position of the arc edge 32 corresponds to the inclined surface 31. One side of the limiting block 21 away from the arc edge 32 is in mutual contact with the inner cavity side wall of the limiting groove 23. There is a gap between the inclined surface 31 and the arc edge 32. When the rotating rod 12 drives the limiting plate 16 to rotate counterclockwise, the arc edge 32 will approach the position where the inclined surface 31 is located along with the limiting plate 16.

[0032] Please refer to Figures 4-5 Figures 4-5 , and since there is a gap between the inclined surface 31 and the arc edge 32, the limit plate 16 can rotate counterclockwise with the rotating rod 12. After the arc edge 32 approaches the inclined surface 31, it will squeeze the limit block 21 to move it away from the center position of the rotating rod 12 and relatively enter the inner cavity of the annular groove 22. Under the action of elastic force, one end of the limit block 21 close to the rotating rod 12 will closely fit with the bottom of the inner cavity of the annular groove 22. When the adjacent limit groove 23 rotates counterclockwise and the position corresponds to the limit block 21 again, the limit block 21 will enter the inner cavity of the limit groove 23 again under the action of elastic force to limit the rotating rod 12. The side of the limit block 21 away from the arc edge 32 is in mutual contact with the side wall of the inner cavity of the limit groove 23, which makes the limit plate 16 and the rotating rod 12 unable to rotate clockwise, thereby limiting the rotating rod 12, and further achieving the counterclockwise rotation of the rotating rod 12 to wind and squeeze the outer wall of the airbag 2. And through the cooperation of the V-shaped groove 10 and the rotating rod 12, the process of squeezing the airbag 2 can be made smoother. That is, before the outer wall of the airbag 2 is wound around the outer wall of the rotating rod 12, it has been squeezed into a relatively flat state when it passes through the V-shaped groove 10, so as to facilitate the rotating rod 12 to wind it. And through the clamping limit of the limit block 21 and the limit groove 23, the rotating rod 12 cannot rotate clockwise, thereby restricting the reset of the airbag 2, so that the pressure in the inner cavity of the pressure bag 5 remains stable.

[0033] When the rotating rod 12 is rotated counterclockwise for pressurization, the rotating rod 12 can be rotated only 90° each time, so as to intermittently squeeze the airbag 2, and then intermittently pressurize the chemotherapy drug. By this way of intermittent quantitative pressurization, it is convenient to judge whether the flow rate of the chemotherapy drug is within the acceptable range of the patient during the process of administering the drug to oncology patients, so as to avoid directly squeezing the airbag by hand, resulting in excessive one-time pressurization and causing the flow rate of the chemotherapy drug to be too large during administration, which causes discomfort to the patient. It is also possible to rotate the rotating rod 12 by an integer multiple of 90° at one time (such as 180°, 270°, 360°, etc.). Different patients have different adaptability degrees to the flow rate of the chemotherapy drug during administration. Rotating by an integer multiple of 90° at one time can quickly adjust to the pressure suitable for the patient. Within the acceptable range of the patient, the chemotherapy drug can be input into the patient's body as quickly as possible, so that the chemotherapy drug can process the cancer cells in the patient's body as quickly as possible, thereby quickly relieving and treating the pain in the patient's body. At the same time, as the chemotherapy drug in the infusion bag continuously enters the patient's body, the volume of the infusion bag will also decrease. At this time, the rotating rod 12 can be rotated counterclockwise again to continue to pressurize the outer wall of the infusion bag with a reduced volume, so that the flow rate of the chemotherapy drug can always maintain a relatively stable flow rate during administration.

[0034] Please refer to Figure 4 and Figure 10 The drive mechanism includes a knob 8. In the middle of one side of the inner cavity of the rotating rod 12 close to the limiting plate 16, a drive cavity 13 is provided. The outer wall of the drive rod 15 is slidably connected to the inner cavity of the drive cavity 13. In the middle of one end of the drive rod 15 away from the rotating rod 12, a driven block 30 is slidably connected. One end of the driven block 30 away from the drive rod 15 is fixedly connected to the middle of the knob 8. The diameter of the knob 8 is larger than that of the drive rod 15. One side of the knob 8 close to the rotating rod 12 is sleeved on the outer wall of the drive rod 15. When the knob 8 rotates, it will drive the drive rod 15 to rotate synchronously through the driven block 30, and then drive the rotating rod 12 and the limiting plate 16 to rotate counterclockwise synchronously through the drive rod 15, so as to pressurize the chemotherapy drug. A sleeve 9 is sleeved on the outer wall of the drive rod 15 close to the knob 8. The sleeve 9 is slidably connected to the housing 1. On the outer wall of one side of the sleeve 9 away from the knob 8, an annular plate 17 is fixedly connected. On one side of the annular plate 17 away from the sleeve 9, symmetric connecting rods 18 are fixedly connected. The annular plate 17 and the connecting rods 18 are both slidably connected to the inner cavity side wall of the placement cavity 14. One end of the connecting rod 18 away from the annular plate 17 is fixedly connected to the middle of one side of the slider 20 close to the knob 8. Since the annular plate 17 and the connecting rods 18 are slidably connected to the inner cavity side wall of the placement cavity 14, during the process of the knob 8 driving the drive rod 15 and the rotating rod 12 to rotate, both the sleeve 9 and the annular plate 17 remain stationary. And when the position of the slider 20 corresponds to the limiting groove 23, one side of the annular plate 17 close to the knob 8 is in contact with the inner cavity side wall of the placement cavity 14 close to the knob 8 side.

[0035] Please refer to Figure 7 and Figure 9, on the side of the outer wall of the driving rod 15 away from the knob 8, symmetric support rods 26 are fixedly connected. Transverse grooves 24 that are slidably engaged with the support rods 26 are provided in the inner cavity of the driving cavity 13. Oblique grooves 25 are provided between two adjacent transverse grooves 24. One end of the oblique groove 25 communicates with the middle of one of the two adjacent transverse grooves 24, and the other end is connected to the end of the other transverse groove 24 away from the driving rod 15. The oblique groove 25 is inclined towards the position where the knob 8 is located. A groove 27 is provided on the side away from the knob 8 at the connection between the middle of the oblique groove 25 and the transverse groove 24. A guide plate 28 is rotatably provided on the side of the inner cavity of the groove 27 close to the oblique groove 25. The guide plate 28 has the same inclination direction as the oblique groove 25. A spring is elastically connected between the middle of the side of the guide plate 28 away from the oblique groove 25 and the side wall of the inner cavity of the groove 27, so that the guide plate 28 can only rotate towards the direction where the knob 8 is located. When the support rod 26 moves in the middle of the inner cavity of the transverse groove 24 towards the direction away from the knob 8, at this time the support rod 26 will approach the position where the guide plate 28 is located and contact it. Since the guide plate 28 cannot rotate towards the direction away from the knob 8 and the inclination angle of the guide plate 28 is the same as that of the oblique groove 25, after the support rod 26 contacts the guide plate 28, under the guiding action of the inclined guide plate 28, it enters the inner cavity of the oblique groove 25 and relatively moves to the connection between the end of the oblique groove 25 away from the knob 8 and the adjacent transverse groove 24.

[0036] By pushing the knob 8, the sleeve 9, the annular plate 17, the connecting rod 18, the slider 20 and the driving rod 15 can be driven to move horizontally synchronously, thereby driving the support rod 26 to approach the position where the guide plate 28 is located. And before the support rod 26 moves to the position where the guide plate 28 is located, the slider 20 drives the limiting block 21 to separate from the limiting groove 23 in the horizontal direction, thereby releasing the limitation on the limiting plate 16. At this time, when the support rod 26 enters the inner cavity of the oblique groove 25, the rotating rod 12 and the limiting plate 16 can be driven to rotate clockwise by 90° synchronously. And when the support rod 26 relatively moves through the oblique groove 25 to the side of the inner cavity of the adjacent transverse groove 24 away from the knob 8, at this time the slider 20 resets under the action of elastic force, thereby driving the support rod 26 to reset. The support rod 26 will move in the inner cavity of the transverse groove 24 towards the direction where the knob 8 is located, and then contact the side of the guide plate 28 away from the knob 8. At this time, the guide plate 28 rotates towards the direction where the knob 8 is located, thereby blocking the connection between the oblique groove 25 and the transverse groove 24, so that the support rod 26 can only move horizontally along the inner cavity of the transverse groove 24. During this process, the rotating rod 12 and the limiting plate 16 remain stationary, that is, when the knob 8 makes a horizontal reciprocating movement once, the rotating rod 12 rotates clockwise by 90°, so that the volume of the inner cavity of the airbag 2 is quantitatively restored, thereby quantitatively reducing the gas in the pressurizing bag 5, and further quantitatively relieving the pressure of the infusion, so as to adjust the flow rate of the chemotherapy drug to the degree suitable for the patient.

[0037] Please refer to Figure 10A symmetrical traction rod 29 is slidably connected to the middle part of one side of the casing 9 close to the knob 8, and a traction rope 19 is fixedly connected to the middle part of the upper end of the limit block 21. The end of the traction rope 19 away from the limit block 21 passes through the side of the limit block 21 that is clamped with the knob 8, and passes through the connecting rod 18, the annular plate 17 and the inner cavity of the traction rope 19 in turn and is fixedly connected to the end of the traction rod 29 away from the knob 8. The end of the traction rod 29 away from the traction rope 19 is rotationally connected to the side wall of the knob 8, and the symmetrical ends of the traction rods 29 away from the traction rope 19 are jointly fixedly connected with a ring 33, and the ring 33 is rotationally connected to the inner cavity of the knob 8, that is, when the knob 8 moves in the horizontal direction, the casing 9 will be driven to move synchronously through the ring 33 and the traction rod 29, thereby driving the annular plate 17, the connecting rod 18 and the slider 20 Synchronous movement, when the knob 8 is rotated, the housing 9, the ring 33 and the traction rod 29 all remain stationary. When the knob 8 moves away from the placement cavity 14, the knob 8 will drive the traction rod 29 to move synchronously through the ring 33. Since the side wall of the annular plate 17 is in contact with the inner cavity side wall of the placement cavity 14, the annular plate 17, the connecting rod 18 and the slider 20 remain stationary when the ring 33 and the traction rod 29 move with the knob 8 away from the placement cavity 14. After the traction rod 29 moves, it will drive the traction rope 19 to move, thereby pulling the limit block 21 vertically upward in the inner cavity of the slider 20 through the traction rope 19, and then moving away from the position of the limit groove 23 in the vertical direction, thereby synchronously releasing the limit block 21 from the limit plate 16.

[0038] See also Figure 1 The side of the outer wall of the airbag 2 away from the shell 1 is fixedly connected with a fixing frame 6, and the middle parts of the two sides of the fixing frame 6 are elastically connected to the outer wall of the shell 1 through symmetrical springs. The side wall of the fixing frame 6 close to the shell 1 is slidably connected with a symmetrical balancing rod 7, and the end of the balancing rod 7 away from the fixing frame 6 is fixedly connected to the outer wall of the shell 1. When the knob 8 is rotated counterclockwise to drive the rotating rod 12 to rotate synchronously, the airbag 2 will continuously pass through the V-shaped groove 10 at this time, and then be wound around the outer wall of the rotating rod 12, thereby completing the compression of the airbag 2. In this process, the fixing frame 6 will approach the position of the shell 1 synchronously with the airbag 2, and the fixing frame 6 is pressed by the symmetrical balancing rod 7. It plays a guiding role so that it can maintain balance during the movement. Through the cooperation of the spring and the fixed frame 6, after the limit block 21 is separated from the limit groove 23, the elastic force will drive the fixed frame 6 away from the position of the shell 1, so that the airbag 2 can be quickly reset, that is, by turning the knob 8 counterclockwise, the gradual or one-time pressurization of the infusion bag can be continuously completed, and the gradual pressure relief of the infusion bag can be completed by pressing the knob 8 close to the position of the placement cavity 14, and the one-time pressure relief of the infusion bag can be completed by pulling the knob 8 away from the position of the placement cavity 14. During the gradual pressure relief and the one-time rapid pressure relief, the horizontal movement direction of the knob 8 is opposite, and the possibility of accidental touch is also avoided.

Claims

1. An auxiliary drug administration device for oncology clinical treatment, comprising a housing, characterized in that, One side of the housing is provided with an airbag. A storage cavity is formed in the middle of the inner cavity of the housing. A rotating rod is rotatably connected to the middle of the inner cavity of the storage cavity. A V-shaped groove is formed in the outer wall of the housing near the airbag. A driving rod is slidably connected to the middle of the rotating rod. A driving mechanism for driving the rotating rod to move is arranged on the outer wall of the driving rod away from the storage cavity. A limiting mechanism for limiting the rotating rod is arranged on the outer wall of the rotating rod. When the driving mechanism approaches the position where the storage cavity is located, the limiting mechanism horizontally moves away from the side of the rotating rod close to the driving mechanism. The middle of the end of the airbag away from the housing is fixedly connected with an air duct. The end of the airbag away from the air duct passes through the V-shaped groove and is fixedly connected to the outer wall of the rotating rod. The end of the air duct away from the airbag is fixedly connected with symmetric pressure bags. An installation plate is fixedly connected to the outer wall of the pressure bag. A fixed frame is fixedly connected to the outer wall of the airbag away from the housing. Symmetric balance rods are slidably connected to the side of the side wall of the fixed frame close to the housing. The end of the balance rod away from the fixed frame is fixedly connected to the outer wall of the housing. The limiting mechanism includes a limiting plate. An installation cavity is formed in the inner cavity of the housing near the driving rod. The limiting plate is fixedly connected to the end of the outer wall of the rotating rod close to the driving rod. A ring groove is formed in the middle of the outer wall of the limiting plate. Symmetric limiting grooves are formed in the inner cavity of the ring groove. A slider is arranged on the side of the limiting groove away from the rotating rod. The side of the slider away from the limiting plate is horizontally slidably connected to the side wall of the inner cavity of the installation cavity. A limiting block is vertically slidably connected to the side of the inner cavity of the slider close to the limiting plate. The lower end of the limiting block is clamped in the inner cavity of the limiting groove. An inclined surface is formed on one side of the lower end of the limiting block. An arc edge is formed in the inner cavity of the limiting groove near the inclined surface. The position of the arc edge corresponds to that of the inclined surface. There is a gap between the inclined surface and the arc edge. The driving mechanism includes a knob. A driving cavity is formed in the middle of the inner cavity of the rotating rod near the limiting plate. The outer wall of the driving rod is slidably connected to the inner cavity of the driving cavity. A driven block is slidably connected to the middle of the end of the driving rod away from the rotating rod. The end of the driven block away from the driving rod is fixedly connected to the middle of the knob. The diameter of the knob is larger than that of the driving rod. The end of the knob close to the rotating rod is sleeved on the outer wall of the driving rod.

2. The auxiliary drug administration device for oncology clinical treatment according to claim 1, wherein, A sleeve is sleeved on the outer wall of the driving rod near the knob. The sleeve is slidably connected to the housing. A ring plate is fixedly connected to the outer wall of the sleeve away from the knob. Symmetric connecting rods are fixedly connected to the side of the ring plate away from the sleeve. The ring plate and the connecting rods are both slidably connected to the side wall of the inner cavity of the installation cavity. The end of the connecting rod away from the ring plate is fixedly connected to the middle of the side of the slider close to the knob.

3. The auxiliary drug delivery device for clinical treatment in oncology department according to claim 2, characterized in that, Symmetric support rods are fixedly connected to the outer wall of the driving rod away from the knob. Transverse grooves slidably matched with the support rods are formed in the inner cavity of the driving cavity. An inclined groove is formed between two adjacent transverse grooves. One end of the inclined groove is connected to the middle of one of the two adjacent transverse grooves, and the other end is connected to the end of the other transverse groove away from the driving rod.

4. An auxiliary drug delivery device for clinical treatment in oncology according to claim 3, characterized in that, The chute is inclined towards the position where the knob is located. A groove is formed on the side away from the knob at the connection between the middle parts of the chute and the horizontal groove. A guide plate is rotatably connected to the side of the inner cavity of the groove close to the chute, and the guide plate has the same inclination direction as the chute.

5. An auxiliary drug delivery device for clinical treatment in oncology according to claim 2, characterized in that, Symmetrical traction rods are slidably connected to the middle part of the side of the housing close to the knob. A traction rope is fixedly connected to the middle part of the upper end of the limiting block. The end of the traction rope away from the limiting block passes through the side of the limiting block clamping the knob, and sequentially passes through the inner cavities of the connecting rod, the annular plate and the traction rope and is fixedly connected to the end of the traction rod away from the knob.

6. An auxiliary drug delivery device for clinical treatment in oncology according to claim 5, characterized in that, The end of the traction rod away from the traction rope is rotatably connected to the side wall of the knob. The ends of the symmetrical traction rods away from the traction rope are fixedly connected to a circular ring together, and the circular ring is rotatably connected to the inner cavity of the knob.

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