Administration device for anesthesiology department

Abstract

The invention provides a drug delivery device for the anesthesiology department, and belongs to the technical field of medical instruments. Comprising a pump body, a motor is arranged in the pump body, a control system on the pump body can control the motor to rotate, a propelling block is installed on the top of the pump body, the propelling block can be driven to move through rotation of the motor on the pump body, and a propelling plate is fixedly connected to the outer wall of the top of the propelling block; and the auxiliary assembly is used for rapidly replacing an injector, and the auxiliary assembly is connected with the pump body. By arranging the auxiliary assembly, the injector can be rapidly replaced in the operation process, and the work efficiency of medical workers can be improved; the catheter can be automatically clamped and closed in the syringe replacement process, bubbles are effectively prevented from entering the catheter to guarantee normal infusion of follow-up liquid medicine, the liquid medicine in the catheter can be prevented from flowing back, and therefore the situation that the dosage of the liquid medicine infused into the body of a patient is insufficient is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a drug delivery device for anesthesiology. Background Technology

[0002] Anesthesiology drug delivery devices are medical devices or systems specifically designed for anesthesia scenarios to precisely deliver various anesthetic drugs (general anesthetics, local anesthetics, and adjuvant medications). Taking a micro-infusion pump (referred to as a "micro-pump") as an example, it consists of a controller, an actuator, and a syringe, and can continuously, uniformly, and in minute quantities deliver medication, enabling real-time and precise control of the anesthesia process, significantly reducing the workload and operational risks for medical staff.

[0003] Currently, in the process of administering anesthetic drugs using a micro-infusion pump, the syringe containing the drug must first be secured: the syringe is placed into the slot of the instrument, and then the limiting handle is rotated to abut against the syringe, thus completing the syringe securing operation; after securing, the micro-infusion pump can be started to administer the drug. However, more than one anesthetic drug is usually required during surgery, so multiple syringes need to be prepared in advance, and the securing operation should be performed sequentially according to the drug administration order. When changing syringes, the catheter connector must be removed from the nipple end of the syringe. This removal and insertion operation must follow the following procedure: first close the three... The process involves opening the valve, then reversing the aforementioned fixed procedure to remove the fixed syringe, replacing it with a new syringe, and re-fixing it. This process is cumbersome and can reduce the efficiency of medical staff. Furthermore, if junior medical staff fail to close the three-way valve when changing syringes due to lack of experience, air bubbles may enter the catheter or the medication may flow back during catheter insertion and removal. This can affect the normal infusion of subsequent medications and may even result in insufficient dosage of medication administered to the patient. Therefore, this invention provides an anesthesiology drug delivery device to meet these needs. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide a drug delivery device for anesthesiology. By incorporating auxiliary components, it not only enables rapid syringe replacement during surgery, improving the work efficiency of medical staff, but also automatically clamps and seals the catheter during syringe replacement. This effectively prevents air bubbles from entering the catheter to ensure normal subsequent drug infusion, and also prevents backflow of the drug within the catheter, thus avoiding insufficient drug dosage in the patient. This solves the problem of cumbersome syringe replacement, which affects work efficiency, and also addresses the issue of air bubbles entering the catheter or backflow of the drug within the catheter due to forgetting to close the three-way valve when replacing the syringe.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An anesthesiology drug delivery device includes a pump body, an internal motor, a control system on the pump body that controls the rotation of the motor, a propulsion block mounted on the top of the pump body that moves the propulsion block when the motor rotates, and a propulsion plate fixedly connected to the top outer wall of the propulsion block; and an auxiliary component for quickly changing syringes, the auxiliary component being connected to the pump body.

[0006] Optionally, the auxiliary component includes a docking platform fixedly connected to the top outer wall of the pump body, the docking platform having a cavity inside, and the auxiliary component also includes several guide blocks, the several guide blocks being fixedly connected to the top outer wall of the pump body near the propulsion block, and a guide plate being fixedly connected to the outer wall of the guide block away from the propulsion block.

[0007] Optionally, the inner walls of the chamber near the docking platform are symmetrically provided with second inclined surfaces. A first sliding groove is provided on the outer wall near the bottom of one side of the docking platform. A second sliding groove is provided on the outer wall near the first sliding groove of one side of the docking platform. A second sliding plate is slidably connected to the inner wall of the first sliding groove. A limit plate is fixedly connected to one end of the second sliding plate. A plurality of second clearance grooves are provided on the outer wall of the second sliding plate near the guide block in a linear array. A fourth elastic plate is fixedly connected to the outer wall of the second sliding plate near the second clearance groove.

[0008] Optionally, a fourth sliding groove is formed on the outer wall of the second sliding plate away from the second clearance groove, a sliding handle is fixedly connected to the end of the second sliding plate away from the limiting plate, a pressing groove is formed on the outer wall of the sliding handle away from the second sliding plate, a third sliding plate is slidably connected to the inner wall of the fourth sliding groove, and a plurality of third clearance grooves are formed on the outer wall of the third sliding plate away from the second clearance groove in a linear array.

[0009] Optionally, a pressing column is fixedly connected to one end of the third sliding plate near the sliding handle, and a second spring is fixedly connected to one end of the pressing column near the third sliding plate. A first snap-fit ​​groove is provided on the outer wall of the docking platform near the push block. Limiting tubes are symmetrically snapped into the inner walls of the first snap-fit ​​groove near the top and bottom. A limiting part is provided on the outer wall of the limiting tube near the central axis of the docking platform.

[0010] Optionally, a first snap-fit ​​plate is symmetrically fixedly connected to the inner wall of the first snap-fit ​​groove near the top and bottom. A first clearance groove is provided on the inner wall of the first snap-fit ​​groove near the first snap-fit ​​plate. A slot is provided on the inner wall of the chamber on the side away from the first snap-fit ​​groove. A second snap-fit ​​groove is provided on the inner wall of the slot near both sides. A third sliding groove is provided on the inner wall of the slot near the bottom.

[0011] Optionally, an L-shaped connecting plate is slidably connected to the inner wall of the third sliding groove. A semi-circular plate is fixedly connected to one end of the L-shaped connecting plate near the first snap-fit ​​groove. A first inclined surface is symmetrically opened on the end wall of the L-shaped connecting plate near the first snap-fit ​​groove. A plurality of first elastic plates are fixedly connected to the outer wall of the semi-circular plate near the middle of the L-shaped connecting plate. The same second elastic plate is fixedly connected to one end of the plurality of first elastic plates away from the semi-circular plate.

[0012] Optionally, a U-shaped support column is fixedly connected to one end of the L-shaped connecting plate away from the semicircular plate. First abutment blocks are symmetrically fixedly connected to the outer walls of the U-shaped support column near both ends. An inclined surface is provided at one end of the first abutment block away from the second elastic plate. A first sliding plate is fixedly connected to the outer wall of the first abutment block near the second elastic plate. A sliding column is fixedly connected to the outer wall of the first sliding plate away from the L-shaped connecting plate.

[0013] Optionally, a first spring is sleeved on the outer wall of the sliding column, a second snap-fit ​​plate is slidably connected to the outer wall of the first sliding plate, a snap-fit ​​protrusion is fixedly connected to one end of the second snap-fit ​​plate near the semicircular plate, a fifth sliding groove is formed on the outer wall of the second snap-fit ​​plate near the middle, and a weakening groove is formed on the outer wall of the second snap-fit ​​plate near the fifth sliding groove.

[0014] Optionally, a first connecting plate is fixedly connected to the outer wall of the second snap-fit ​​plate on the other side of the fifth sliding groove, and a third elastic plate is symmetrically fixedly connected to the outer wall of the second snap-fit ​​plate away from the snap-fit ​​protrusion. A second abutting block is fixedly connected to the end of the third elastic plate away from the second snap-fit ​​plate, and an inclined surface is provided at the end of the second abutting block near the first abutting block.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting up auxiliary components, not only can the syringe be quickly changed during the operation, which helps to improve the work efficiency of medical staff, but the catheter can also be automatically clamped and sealed during the syringe change process. This effectively prevents air bubbles from entering the catheter to ensure the normal infusion of subsequent medications, and also prevents the medications in the catheter from flowing back, thereby avoiding insufficient dosage of medications infused into the patient.

[0016] By incorporating a second sliding plate, a pressing column, a sliding handle, and a fourth elastic plate within the auxiliary components, not only can the syringe be quickly installed and disassembled, but the syringe can also be quickly replaced during surgery, thereby effectively improving the work efficiency of staff.

[0017] By setting a first snap-fit ​​groove, a limiting tube, and a first snap-fit ​​plate within the auxiliary components, the syringe tip can be guided and limited, facilitating the subsequent attachment of the catheter connector to the outer wall of the syringe tip.

[0018] By setting an L-shaped connecting plate, a semi-circular plate, a first elastic plate, and a second elastic plate on the auxiliary components, not only can the catheter connector be quickly fixed, but the catheter connector can also be quickly inserted and removed from the nipple of the syringe.

[0019] By setting a U-shaped support column, a first abutment block, a first sliding plate, a third elastic plate, and a second abutment block on the auxiliary components, the catheter can be clamped, which can prevent air bubbles from entering the inside of the catheter during the insertion and removal of the catheter connector and prevent the backflow of the medicine inside the catheter. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 A three-dimensional schematic diagram of the combination of an anesthesiology drug delivery device and syringe; Figure 2 A three-dimensional structural diagram of a drug delivery device used in anesthesiology. Figure 3 An enlarged three-dimensional structural diagram showing the assembly of the pump body, guide block, and docking platform; Figure 4 Enlarged 3D structural diagram of the docking platform and the second contact block; Figure 5 A half-section enlarged three-dimensional structural diagram of the docking platform and the second contact block; Figure 6 An enlarged three-dimensional structural diagram of the L-shaped connecting plate, semi-circular plate, and conduit connector; Figure 7 An enlarged three-dimensional structural diagram showing the combination of an L-shaped connecting plate, a semi-circular plate, and a U-shaped support column; Figure 8 An enlarged three-dimensional schematic diagram of the cooperation between the sliding handle, the second sliding plate, and the fourth elastic plate; Figure 9 A half-section enlarged three-dimensional structural diagram showing the cooperation of the sliding handle, the second sliding plate, and the fourth elastic plate; Figure 10 This is an enlarged three-dimensional structural diagram of the third sliding plate, the pressing column, and the second spring working together.

[0022] Figure label: 1. Pump body; 2. Docking platform; 3. First sliding groove; 4. Second sliding groove; 5. First snap-fit ​​groove; 6. First clearance groove; 7. First snap-fit ​​plate; 8. Limiting tube; 9. Limiting part; 10. Chamber; 11. Slot; 12. Second inclined surface; 13. First inclined surface; 14. Semicircular plate; 15. First elastic plate; 16. Second elastic plate; 17. First abutment block; 18. First sliding plate; 19. Sliding column; 20. First spring; 21. Second snap-fit ​​plate; 22. Snap-fit ​​protrusion; 23. Weakening groove; 24. Third elastic... 25. Second abutment block; 26. First connecting plate; 27. Second sliding plate; 28. Sliding handle; 29. ​​Limiting plate; 30. Pressing groove; 31. Fourth sliding groove; 32. Fourth elastic plate; 33. Second clearance groove; 34. Third sliding plate; 35. Third clearance groove; 36. Pressing post; 37. Second spring; 38. Third sliding groove; 39. Second snap-fit ​​groove; 40. Fifth sliding groove; 41. Pushing block; 42. Pushing plate; 43. Guide block; 44. Guide plate; 45. L-shaped connecting plate; 46. U-shaped support post.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The following is a detailed description of an anesthesiology drug delivery device provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] like Figures 1 to 10As shown, an embodiment of the present invention provides an anesthesiology drug delivery device, including a pump body 1. A motor is installed inside the pump body 1, and a control system on the pump body 1 can control the rotation of the motor. A propulsion block 41 is installed on the top of the pump body 1. The rotation of the motor on the pump body 1 can drive the propulsion block 41 to move. A propulsion plate 42 is fixedly connected to the top outer wall of the propulsion block 41. Specifically, a motor is installed inside the pump body 1, and the control system on the pump body 1 can control the rotation of the motor and drive the propulsion block 41 to move. The propulsion plate 42 is fixedly connected to the top outer wall of the propulsion block 41 and moves with the propulsion block 41. Under the action of the propulsion block 41, the propulsion plate 42 pushes the piston and injects the drug solution in the syringe into the patient's body through the catheter. An auxiliary component is provided for quick syringe replacement. The auxiliary component is connected to the pump body 1. By setting the auxiliary component, this application can not only realize quick syringe replacement during the operation, which helps to improve the work efficiency of medical staff, but also automatically clamp and seal the catheter during syringe replacement. This can effectively prevent air bubbles from entering the catheter to ensure the normal infusion of subsequent medication, and also prevent the medication in the catheter from flowing back, thereby avoiding insufficient dosage of medication infused into the patient.

[0027] like Figures 1 to 5 and Figures 8 to 10 As shown, the auxiliary component includes a docking platform 2 fixedly connected to the top outer wall of the pump body 1. The docking platform 2 has a chamber 10 inside. The inner walls of the chamber 10 near both sides of the docking platform 2 are symmetrically provided with second inclined surfaces 12. A first sliding groove 3 is provided on the outer wall near the bottom of one side of the docking platform 2. A second sliding groove 4 is provided on the outer wall near the first sliding groove 3 on one side of the docking platform 2. A second sliding plate 27 is slidably connected to the inner wall of the first sliding groove 3. A limit plate 29 is fixedly connected to one end of the second sliding plate 27. A sliding handle 28 is fixedly connected to the other end of the second sliding plate 27 away from the limit plate 29.

[0028] Specifically, the docking platform 2 is fixedly connected to the top outer wall of the pump body 1. The docking platform 2 is a square column made of plastic. The chamber 10 is opened inside the docking platform 2 and extends out from both sides of the docking platform 2. The chamber 10 is a cross-shaped groove. The second inclined surface 12 is symmetrically arranged on the inner wall of the chamber 10 near both sides of the docking platform 2. The arrangement of the second inclined surface 12 can guide the syringe tip during the movement of the syringe into the chamber 10. The first sliding groove 3 is opened on the outer wall of one side of the docking platform 2 near the bottom and extends out from the other side of the docking platform 2. The first sliding groove 3 is a T-shaped groove. The second sliding groove 4 is opened on the outer wall of one side of the docking platform 2 near the first sliding groove 3 and extends out from the other side of the docking platform 2. The second sliding groove 4 is a square groove. The second sliding groove 4 is connected to the first sliding groove 3 and the chamber 10 respectively. The second sliding plate 27 is slidably connected to the first sliding groove 3 and the chamber 10. On the inner wall of the sliding groove 3, the overall outline of the second sliding plate 27 is a square plastic plate, and the outer wall outline of the second sliding plate 27 near the docking platform 2 is adapted to the inner wall outline of the first sliding groove 3. Therefore, the second sliding plate 27 can slide on the inner wall of the first sliding groove 3. The limiting plate 29 is fixedly connected to one end of the second sliding plate 27. The limiting plate 29 is a T-shaped plastic plate, and the size of the limiting plate 29 is larger than the inner wall size of the first sliding groove 3. The sliding handle 28 is fixedly connected to the end of the second sliding plate 27 away from the limiting plate 29. The sliding handle 28 is a square plastic column, and a groove suitable for medical staff to hold is opened on the outer wall of the middle part of the sliding handle 28. Medical staff can hold the sliding handle 28 and push and pull the sliding handle 28. The sliding handle 28 will drive the second sliding plate 27 to slide along the inner wall of the first sliding groove 3, and the limiting plate 29 can prevent the second sliding plate 27 from sliding out of the inner wall of the first sliding groove 3.

[0029] Furthermore, the auxiliary components also include several guide blocks 43, which are fixedly connected to the top outer wall of the pump body 1 near the propulsion block 41. A guide plate 44 is fixedly connected to the outer wall of the guide blocks 43 away from the propulsion block 41. Several second clearance grooves 33 arranged in a linear array are formed on the outer wall of the second sliding plate 27 near the guide blocks 43. A fourth elastic plate 32 is fixedly connected to the outer wall of the second sliding plate 27 near the second clearance grooves 33. A fourth sliding groove 31 is formed on the outer wall of the second sliding plate 27 away from the second clearance grooves 33. A pressing groove 30 is formed on the outer wall of the sliding handle 28 away from the second sliding plate 27. A third sliding plate 34 is slidably connected to the inner wall of the fourth sliding groove 31. Several third clearance grooves 35 arranged in a linear array are formed on the outer wall of the third sliding plate 34 away from the second clearance grooves 33. The end of the third sliding plate 34 near the sliding handle 28... A pressing column 36 is fixedly connected, and a second spring 37 is fixedly connected to one end of the pressing column 36 near the third sliding plate 34. Specifically, several guide blocks 43 are fixedly connected to the outer wall of the pump body 1 near the top. The guide blocks 43 are concave plastic plates. There are two guide blocks 43 in total, and the two guide blocks 43 are symmetrical about the push block 41. Since the inner wall contour of the guide block 43 is adapted to the outer wall contour of the second sliding plate 27 on the side away from the first sliding groove 3, the second sliding plate 27 slides along the inner wall of the first sliding groove 3 and simultaneously slides along the inner wall of the guide block 43. With the assistance of the guide block 43, the stability of the second sliding plate 27 during the sliding process is improved. One end of the guide plate 44 is fixedly connected to the outer wall of the guide block 43 on the side away from the push block 41, and the other end is an open end. The guide plate 44 is an arc-shaped plastic plate, and the guide plate 44 can provide guidance when the second sliding plate 27 slides.

[0030] Several second clearance grooves 33 are formed on the outer wall of the second sliding plate 27 near the guide block 43, and are arranged in a linear array. Each second clearance groove 33 is a square-shaped groove. Since the inner wall contour of the second clearance groove 33 matches the outer wall contour of the push plate 42, the second clearance groove 33 can provide clearance space for the push plate 42 when the push block 41 moves it. A fourth elastic plate 32 is fixedly connected to the outer wall of the second sliding plate 27 near the second clearance grooves 33. The fourth elastic plate 32 is a C-shaped plastic plate used to hold the syringe. When the syringe is inserted into the fourth elastic plate 32... During the process, the fourth elastic plate 32 deforms along its own bending direction due to the force. The fourth sliding groove 31 is formed on the outer wall of the second sliding plate 27 away from the second clearance groove 33. The fourth sliding groove 31 is a square groove. The pressing groove 30 is formed on the outer wall of the sliding handle 28 away from the second clearance groove 33. The pressing groove 30 is a cylindrical groove and is connected to the fourth sliding groove 31. The third sliding plate 34 is slidably connected to the inner wall of the fourth sliding groove 31. The third sliding plate 34 is a square plastic plate. Since the outer contour of the third sliding plate 34 matches the inner contour of the fourth sliding groove 31... Therefore, the third sliding plate 34 can slide on the inner wall of the fourth sliding groove 31, and the outer wall contour of the third sliding plate 34 is also adapted to the inner wall contour of the second sliding groove 4. Therefore, when the second sliding plate 27 slides on the inner wall of the first sliding groove 3, it will drive the third sliding plate 34 to slide along the inner wall of the second sliding groove 4. Several third clearance grooves 35 are formed on the outer wall of the third sliding plate 34 away from the second clearance grooves 33. The several third clearance grooves 35 are arranged in a linear array, and the positions of the several third clearance grooves 35 on the third sliding plate 34 correspond one-to-one with the positions of the several second clearance grooves 33. The third clearance grooves 35 are trapezoidal in shape. The pressing column 36 is fixedly connected to the end of the third sliding plate 34 near the sliding handle 28. The pressing column 36 is a plastic cylinder, and the outer contour of the pressing column 36 is adapted to the inner contour of the pressing groove 30. Therefore, the pressing column 36 can slide on the inner wall of the pressing groove 30. One end of the second spring 37 is fixedly connected to the end of the pressing column 36 near the third sliding plate 34, and the other end of the second spring 37 is fixedly connected to the inner wall of the pressing groove 30 near the second sliding plate 27. When the pressing column 36 is pressed in the direction of the second sliding plate 27, the second spring 37 will be subjected to the pressure of the pressing column 36 and deform along its bending direction.

[0031] When medical staff grasp the sliding handle 28 and press the pressing column 36, the pressing column 36 slides along the inner wall of the pressing groove 30 towards the second sliding plate 27. As the pressing column 36 slides, the second spring 37 is subjected to the pressure of the pressing column 36 and deforms along its own bending direction. At the same time, the third sliding plate 34, driven by the pressing column 36, slides along the inner wall of the fourth sliding groove 31 towards the limiting plate 29. Subsequently, when the medical staff pushes the sliding handle 28, the second sliding plate 27 slides synchronously along the first sliding groove 3 with the sliding handle 28. During the sliding process of the inner wall of the first sliding groove 3, the third sliding plate 34 will slide along the inner wall of the second sliding groove 4. At the same time, the fourth elastic plate 32 will move synchronously under the action of the second sliding plate 27. The syringe that is locked by the fourth elastic plate 32 will also move together with the fourth elastic plate 32. The syringe containing the medicine will replace the empty syringe, thereby completing the syringe replacement operation. The above structure not only enables quick installation and disassembly of syringes, but also allows for quick syringe replacement during surgery, thereby effectively improving the work efficiency of the staff.

[0032] like Figures 1 to 5As shown, a first locking groove 5 is provided on the outer wall of the docking platform 2 near the propulsion block 41. Limiting tubes 8 are symmetrically locked onto the inner walls of the first locking groove 5 near the top and bottom. Limiting parts 9 are provided on the outer walls of the limiting tubes 8 near the central axis of the docking platform 2. First locking plates 7 are symmetrically fixedly connected to the inner walls of the first locking groove 5 near the top and bottom. A first clearance groove 6 is provided on the inner wall of the first locking groove 5 near the first locking plate 7. Specifically, the first locking groove 5 is located on the outer wall of the docking platform 2 near the propulsion block 41. The first locking groove 5 is a convex groove and is connected to the chamber 10. Two limiting tubes 8 are symmetrically locked onto the inner walls of the first locking groove 5 near the top and bottom. The entire limiting tube 8... The metal tube has an isosceles trapezoidal shape, and the connection between the waist and the bottom of the limiting tube 8 is C-shaped. When the top of the limiting tube 8 is subjected to pressure, the connection between the waist and the bottom will be stressed and deform along its bending direction. The limiting part 9 is set on the outer wall of the limiting tube 8 near the central axis of the docking platform 2. The limiting part 9 has a C-shaped contour. The contour formed by the two limiting parts 9 is adapted to the outer contour of the syringe nipple. The syringe nipple can be limited by the cooperation between the two limiting parts 9. The first snap-fit ​​plate 7 is fixedly connected to the inner wall of the first snap-fit ​​groove 5 near the top and near the bottom. The first snap-fit ​​plate 7 is composed of two parts: a C-shaped plastic plate and a square plastic plate with an open end. When the first snap-fit ​​plate 7 is subjected to force, it will deform along its... The bending direction causes deformation. The first clearance groove 6 is formed on the inner wall of the first snap-fit ​​groove 5 near the first snap-fit ​​plate 7. The first clearance groove 6 is a square groove. The inner wall contour of the first clearance groove 6 matches the outer wall contour of the open end of the first snap-fit ​​plate 7. The outer wall of the open end of the first snap-fit ​​plate 7 abuts against the inner wall of the first clearance groove 6. When medical staff insert the two limiting tubes 8 into the inner walls of the first snap-fit ​​groove 5 near the top and bottom respectively, the outer wall of the limiting tube 8 will abut against the outer wall of the first snap-fit ​​plate 7. At this time, the first snap-fit ​​plate 7 will be stressed and deform along its bending direction until the two limiting tubes 8 are fully inserted. Then the first snap-fit ​​plate 7 will no longer be stressed and will return to its original deformation along its bending direction, thus limiting the limiting tubes 8. When the syringe moves with the second sliding plate 27, the syringe tip can slide into the position of the limiting part 9 under the guide on the waist of the limiting tube 8. During this process, the syringe tip will slide down to the upper bottom of the limiting tube 8 under the guide on the waist of the limiting tube 8 and press against the upper bottom of the limiting tube 8. This will cause the connection between the waist and the lower bottom of the limiting tube 8 to be stressed and deformed along its bending direction until the syringe tip slides into the limiting part 9 along the outer wall of the upper bottom of the limiting tube 8. At this time, the connection between the waist and the lower bottom of the limiting tube 8 will no longer be stressed and will return to its bending direction. The above structure can guide and limit the syringe tip, which will facilitate the subsequent fitting of the catheter connector onto the outer wall of the syringe tip.

[0033] like Figures 1 to 7 As shown, a slot 11 is provided on the inner wall of the chamber 10 away from the first snap-fit ​​groove 5. A second snap-fit ​​groove 39 is provided on the inner wall of the slot 11 near both sides. A third sliding groove 38 is provided on the inner wall of the slot 11 near the bottom. An L-shaped connecting plate 45 is slidably connected to the inner wall of the third sliding groove 38. A semi-circular plate 14 is fixedly connected to one end of the L-shaped connecting plate 45 near the first snap-fit ​​groove 5. A first inclined surface 13 is symmetrically provided on the end wall of the L-shaped connecting plate 45 near the first snap-fit ​​groove 5. A plurality of first elastic plates 15 are fixedly connected to the outer wall of the semi-circular plate 14 near the middle of the L-shaped connecting plate 45. The same second elastic plate 16 is fixedly connected to one end of the plurality of first elastic plates 15 away from the semi-circular plate 14.

[0034] Specifically, slot 11 is located on the inner wall of chamber 10 away from the first latching slot 5. Slot 11 is a circular slot. Two second latching slots 39 are symmetrically located on the inner walls of slot 11 near both sides. The second latching slots 39 are square slots. A third sliding groove 38 is located on the inner wall of slot 11 near the bottom. The third sliding groove 38 is a square groove. An L-shaped connecting plate 45 is slidably connected to the inner wall of the third sliding groove 38. The L-shaped connecting plate 45 is an L-shaped plastic plate. Since the outer contour of the L-shaped connecting plate 45 matches the inner contour of the third sliding groove 38, the L-shaped connecting plate 45 can slide on the inner wall of the third sliding groove 38. A semi-circular plate 14 is fixedly connected to the L-shaped connecting plate 45 near the first latching slot. On one end of the outer wall of plate 5, the semicircular plate 14 is an arc-shaped plastic plate, and its inner wall is provided with a groove adapted to the conduit. Several first elastic plates 15 are fixedly connected to the outer wall of the semicircular plate 14 near the middle of the L-shaped connecting plate 45. The several first elastic plates 15 are arranged in an arc-shaped array, and the first elastic plates 15 are U-shaped plastic plates. When the first elastic plates 15 are subjected to force, they will deform along their bending direction. The ends of the several first elastic plates 15 away from the semicircular plate 14 are fixedly connected to the same second elastic plate 16. The second elastic plate 16 is a plastic plate with an overall C-shaped structure. When the conduit connector is placed between the semicircular plate 14 and the second elastic plate 16, the outer wall of the conduit connector will be inserted into the inner wall of the second elastic plate 16. At the same time, the conduit connector The first elastic plate 15 will be limited by the cooperation between the semicircular plate 14 and the second elastic plate 16. During this process, the second elastic plate 16 will deform along the bending direction as the catheter connector is inserted. At the same time, the catheter connector will abut against one side of the outer wall of the second elastic plate 16, causing the second elastic plate 16 to move away from the semicircular plate 14. The first elastic plate 15 will be stressed and deform along its bending direction until the outer wall of the catheter connector is completely inserted into the second elastic plate 16. At this time, the second elastic plate 16 will no longer be stressed and will restore its deformation along its bending direction, clamping the catheter connector. At the same time, the first elastic plate 15 will also no longer be stressed and will restore its deformation along its bending direction, pushing the second elastic plate 16 towards the semicircular plate 14. With the cooperation of plate 14, the catheter connector is limited. Two first inclined surfaces 13 are symmetrically opened on the end wall of the L-shaped connecting plate 45 near the first locking groove 5. The contour of the end wall of the L-shaped connecting plate 45 near the first locking groove 5 matches the contour of the inner wall of the third clearance groove 35. As the third sliding plate 34 moves, the L-shaped connecting plate 45 slides out from the inner wall of the third clearance groove 35. At this time, the L-shaped connecting plate 45 will slide along the inner wall of the third sliding groove 38 away from the first locking groove 5 under the action of the third sliding plate 34. At the same time, the semi-circular plate 14 will move synchronously with the L-shaped connecting plate 45. In this way, the catheter connector can be pulled off the nipple of the syringe. The above structural design can not only quickly fix the catheter connector, but also...The catheter connector can also be quickly inserted and removed from the syringe nipple.

[0035] like Figures 4 to 7 As shown, a U-shaped support column 46 is fixedly connected to the end of the L-shaped connecting plate 45 away from the semicircular plate 14. First abutment blocks 17 are symmetrically fixedly connected to the outer walls of the U-shaped support column 46 near both ends. An inclined surface is provided at the end of the first abutment block 17 away from the second elastic plate 16. A first sliding plate 18 is fixedly connected to the outer wall of the first abutment block 17 near the second elastic plate 16. A sliding column 19 is fixedly connected to the outer wall of the first sliding plate 18 away from the L-shaped connecting plate 45. A first spring 20 is sleeved on the outer wall of the sliding column 19. A second snap-fit ​​plate 21 is slidably connected to the outer wall of the first sliding plate 18. The second snap-fit ​​plate 21 is located near the semicircular plate 14. One end of the circular plate 14 is fixedly connected to a snap-fit ​​protrusion 22. A fifth sliding groove 40 is provided on the outer wall of the second snap-fit ​​plate 21 near the middle. A weakening groove 23 is provided on the outer wall of the second snap-fit ​​plate 21 on the side near the fifth sliding groove 40. A first connecting plate 26 is fixedly connected to the outer wall of the second snap-fit ​​plate 21 on the other side near the fifth sliding groove 40. A third elastic plate 24 is symmetrically fixedly connected to the outer wall of the second snap-fit ​​plate 21 away from the snap-fit ​​protrusion 22. A second abutting block 25 is fixedly connected to the end of the third elastic plate 24 away from the second snap-fit ​​plate 21. A slope is provided on the end of the second abutting block 25 near the first abutting block 17.

[0036] Specifically, the U-shaped support column 46 is fixedly connected to the end of the L-shaped connecting plate 45 away from the semicircular plate 14. The U-shaped support column 46 is a U-shaped plastic column. Two first contact blocks 17 are symmetrically fixedly connected to the outer walls of the U-shaped support column 46 near both ends. The first contact blocks 17 are square plastic columns, and the end of the first contact block 17 away from the U-shaped support column 46 is provided with an inclined surface. The first sliding plate 18 is fixedly connected to the outer wall of the first contact block 17 near the second elastic plate 16. The first sliding plate 18 is a convex plastic plate. The outer walls of the two first sliding plates 18 are respectively slidably connected to second snap-fit ​​plates 21. The second snap-fit ​​plates 21 are square plastic plates. The snap-fit ​​protrusion 22 is fixedly connected to the second snap-fit ​​plates 21 near the semicircular plate. At one end of 14, the snap-fit ​​protrusion 22 is a quarter-cylinder plastic cylinder. Since the outer contours of the two second snap-fit ​​plates 21 are respectively adapted to the inner contours of the two second snap-fit ​​grooves 39, the two second snap-fit ​​plates 21 slide into the two second snap-fit ​​grooves 39 respectively. With the cooperation of the two snap-fit ​​protrusions 22, the two second snap-fit ​​plates 21 can be fixed. The fifth sliding groove 40 is opened on the outer wall of the second snap-fit ​​plate 21 near the middle. The fifth sliding groove 40 is a square groove. Since the inner contour of the fifth sliding groove 40 is adapted to the outer contour of the first sliding plate 18, the first sliding plate 18 can slide on the inner wall of the fifth sliding groove 40. The weakening groove 23 is opened on the outer wall of the second snap-fit ​​plate 21 near the fifth sliding groove 40. The weakening groove 23 is an arc-shaped groove. By pressing the outer wall of the second snap-fit ​​plate 21, the end of the second snap-fit ​​plate 21 near the snap-fit ​​protrusion 22 tilts in cooperation with the weakening groove 23, thus allowing the second snap-fit ​​plate 21 to be pulled out from the inner wall of the second snap-fit ​​groove 39. The first connecting plate 26 is fixedly connected to the outer wall of the second snap-fit ​​plate 21 on the other side near the fifth sliding groove 40. The first connecting plate 26 is a square plastic plate, and a circular groove is formed on the outer wall of the middle part of the first connecting plate 26. Since one end of the sliding column 19 is fixedly connected to the outer wall of the first sliding plate 18 away from the L-shaped connecting plate 45, the sliding column 19 is a circular plastic cylinder, and the other end of the sliding column 19 extends from the circular groove in the middle of the first connecting plate 26. The sliding column 19 passes through the body. Because the outer contour of the sliding column 19 matches the inner contour of the groove in the middle of the first connecting plate 26, the sliding column 19 can slide on the inner wall of the first connecting plate 26. The first spring 20 is sleeved on the outer wall of the sliding column 19. One end of the first spring 20 is fixedly connected to the outer wall of the first sliding plate 18 near the sliding column 19, and the other end of the first spring 20 is fixedly connected to the outer wall of the first connecting plate 26 near the first sliding plate 18. When the first sliding plate 18 slides along the inner wall of the fifth sliding groove 40 toward the first connecting plate 26, the sliding column 19 will slide synchronously along the inner wall of the first connecting plate 26 under the action of the first sliding plate 18. At this time, the first spring 20 will be subjected to force and deform along its bending direction.When the first spring 20 is no longer under force, it will restore its deformation along its bending direction and push the first sliding plate 18 to slide along the inner wall of the fifth sliding groove 40 toward the snap-fit ​​protrusion 22. At the same time, the sliding column 19 will slide synchronously along the inner wall of the first connecting plate 26 under the action of the first sliding plate 18. One end of the two third elastic plates 24 is symmetrically fixedly connected to the outer wall of the second snap-fit ​​plate 21 away from the snap-fit ​​protrusion 22. The two third elastic plates 24 are fixedly connected to the same second abutment block 25 at the ends away from the second snap-fit ​​plate 21. The abutment block 25 is a square plastic cylinder. One end of the second abutment block 25 near the first abutment block 17 has a slope. The slope on the second abutment block 25 abuts against the slope on the first abutment block 17. When the first abutment block 17 moves towards the second abutment block 25, the first sliding plate 18 slides along the inner wall of the fifth sliding groove 40, following the first abutment block 17. The sliding column 19 slides synchronously along the inner wall of the first connecting plate 26, following the first sliding plate 18. At this time, the first spring 20 is subjected to force but does not move along its bending direction. During the deformation, the two second contact blocks 25 move towards each other due to the contact with the inclined surface of the first contact block 17. At this time, the third elastic plate 24 is subjected to force and deforms along its bending direction. During the movement of the two second contact blocks 25 towards each other, the catheter is clamped, which can prevent the backflow of the medicine in the catheter when changing the syringe. When the first spring 20 is no longer subjected to force, it will restore its deformation along its bending direction and push the first sliding plate 18 along the inner wall of the fifth sliding groove 40 towards the locking protrusion 22. As the sliding column 19 slides along the inner wall of the first connecting plate 26, it slides synchronously with the first sliding plate 18. The inclined surface on the first contact block 17 no longer abuts against the inclined surface on the second contact block 25. At this point, the third elastic plate 24 is no longer under force and recovers its deformation along its bending direction, driving the second contact block 25 to move towards the second locking plate 21, thus releasing the clamping of the catheter. This structural design, by clamping the catheter, prevents air bubbles from entering the catheter during insertion and removal of the catheter connector, and also prevents backflow of the medication inside the catheter.

[0037] The working principle of the technical solution provided by this invention is as follows: In use, medical staff insert several syringes containing different medications into the fourth elastic plate 32. During this process, the fourth elastic plate 32 deforms along its own bending direction due to the force applied. Then, the catheter connector is placed between the semicircular plate 14 and the second elastic plate 16. The outer wall of the catheter connector engages with the inner wall of the second elastic plate 16, forming a limiting position through the cooperation of the semicircular plate 14 and the second elastic plate 16. During this process, the second elastic plate 16 deforms along its bending direction as the catheter connector is inserted, and the catheter connector abuts against the second elastic plate 16. On one side of the outer wall of plate 6, the second elastic plate 16 is moved away from the semicircular plate 14, which in turn causes the first elastic plate 15 to be stressed and deform along its own bending direction until the outer wall of the catheter connector is completely inserted into the second elastic plate 16. At this time, the second elastic plate 16 is no longer stressed, and it restores its deformation along its own bending direction to clamp the catheter connector; at the same time, the first elastic plate 15 is also released from stress, restores its deformation along its own bending direction, and pushes the second elastic plate 16 towards the semicircular plate 14. With the cooperation of the semicircular plate 14, the catheter connector is limited, and then... The catheter is placed between the two second contact blocks 25, and then the catheter connector is inserted into the chamber 10. During this process, the outer wall of the semi-circular plate 14 abuts against the inner wall of the chamber 10 near the first locking groove 5, and the catheter connector, after being inserted into the chamber 10, will fit onto the outer wall of the syringe nipple. At the same time, the L-shaped connecting plate 45 will slide along the inner wall of the third sliding groove 38 toward the first locking groove 5, and the locking protrusion 22 will be inserted into the chamber 10 along the inner wall of the second locking groove 39, with its arc-shaped outer wall abutting against the inner wall of the second locking groove 39; in the weakening groove 23... When closed, the end of the second snap plate 21 near the snap protrusion 22 will tilt until the snap protrusion 22 is fully inserted into the chamber 10 and its outer wall abuts against the inner wall of the chamber 10 near the second snap groove 39. This completes the installation of the catheter connector. Then, the pump body 1 is started. The control system of the pump body 1 can control the motor to rotate, which drives the push block 41 to move. The push plate 42 moves synchronously with the push block 41 along the inner wall of the second clearance groove 33 towards the docking platform 2, pushing the syringe handle and driving the piston to inject the liquid medicine in the syringe into the patient's body through the catheter.

[0038] When the syringe needs to be replaced, first turn off the control system of pump body 1. The push plate 42 will automatically reset. Then, the medical staff holds the sliding handle 28 and presses the pressing column 36. The pressing column 36 will slide along the inner wall of the pressing groove 30 towards the second sliding plate 27, driving the third sliding plate 34 to slide along the inner wall of the fourth sliding groove 31 towards the limiting plate 29. As the third sliding plate 34 moves, the end of the L-shaped connecting plate 45 away from the U-shaped support column 46 will slide out from the inner wall of the third clearance groove 35 and, driven by the third sliding plate 34, slide along the inner wall of the third sliding groove 38 away from the first locking groove 5. The U-shaped support column 46 moves synchronously. During this process, The first abutment block 17 moves toward the second abutment block 25, causing the first sliding plate 18 to slide along the inner wall of the fifth sliding groove 40, while the sliding column 19 slides synchronously along the inner wall of the first connecting plate 26, causing the first spring 20 to deform under force. At the same time, under the abutment action of the inclined surface of the first abutment block 17, the two second abutment blocks 25 move toward each other, causing the third elastic plate 24 to deform along its own bending direction under force. When the two second abutment blocks 25 come close to each other, they will clamp the catheter, which can prevent the backflow of the drug in the catheter during the replacement of the syringe. At the same time, the semi-circular plate 14 moves synchronously with the L-shaped connecting plate 45, so that the catheter connector can be pulled off the syringe nipple.

[0039] Afterwards, the medical staff pushes the sliding handle 28, and the second sliding plate 27 moves towards the pump body 1 under its action. The fourth elastic plate 32 and the syringe it holds move synchronously. The syringe tip slides down to the upper bottom of the limiting tube 8 under the guidance of the waist of the limiting tube 8 and presses against it, causing the connection between the waist and the lower bottom of the limiting tube 8 to deform under force until the syringe tip slides into the limiting part 9 along the outer wall of the upper bottom of the limiting tube 8. At this time, the connection between the waist and the lower bottom of the limiting tube 8 is released from force and returns to its original deformation along its own bending direction. Then, the medical staff releases their thumb from pressing the pressing column 36, the second spring 37 is released from force and returns to its original deformation along its own bending direction, causing the pressing column 36 to slide away from the second sliding plate 27 along the inner wall of the pressing groove 30. The third sliding plate 34 moves synchronously until the corresponding third clearance groove 35 on the third sliding plate 34 is aligned with the end of the L-shaped connecting plate 45 away from the U-shaped support column 46.

[0040] At this time, the first spring 20 is released from its stress and returns to its original deformation along its bending direction, pushing the first sliding plate 18 to slide along the inner wall of the fifth sliding groove 40 towards the snap-fit ​​protrusion 22. The sliding column 19 slides synchronously along the inner wall of the first connecting plate 26. The inclined surface of the first abutment block 17 no longer abuts the inclined surface of the second abutment block 25. The third elastic plate 24 is released from its stress and returns to its original deformation along its bending direction, driving the second abutment block 25 to move towards the second snap-fit ​​plate 21, releasing the clamping of the guide tube. At the same time, the first abutment block 17 moves towards the first snap-fit ​​groove 5 under the action of the first sliding plate 18. The U-shaped support column 46 moves synchronously, and the L-shaped connection... Plate 45 slides along the inner wall of the third sliding groove 38 towards the first locking groove 5 along with the U-shaped support column 46, with its end away from the U-shaped support column 46 abutting against the inner wall of the corresponding third clearance groove 35; the outer wall of the semi-circular plate 14 abuts against the inner wall of the chamber 10 near the first locking groove 5, and the catheter connector limited by the semi-circular plate 14 and the second elastic plate 16 will be sleeved onto the outer wall of the nipple of the new syringe as the semi-circular plate 14 moves. Then, the pump body 1 is restarted, and the push plate 42 can push the syringe handle, driving the piston to inject the medicine into the patient's body through the catheter. If the medicine in the replaced syringe is exhausted, the above operation can be repeated to complete the replacement.

[0041] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A drug delivery device for anesthesiology, characterized in that, The pump includes a pump body, which contains a motor. A control system on the pump body can control the rotation of the motor. A propulsion block is installed on the top of the pump body. The rotation of the motor on the pump body can drive the propulsion block to move. A propulsion plate is fixedly connected to the top outer wall of the propulsion block. An auxiliary component for quick syringe replacement, the auxiliary component being connected to the pump body.

2. The drug delivery device for anesthesiology according to claim 1, characterized in that, The auxiliary component includes a docking platform fixedly connected to the top outer wall of the pump body, the docking platform having a chamber inside, and the auxiliary component also includes several guide blocks, the several guide blocks being fixedly connected to the top outer wall of the pump body near the propulsion block, and a guide plate being fixedly connected to the outer wall of the guide block away from the propulsion block.

3. The drug delivery device for anesthesiology according to claim 2, characterized in that, The inner walls of the chamber near the docking platform are symmetrically provided with second inclined surfaces. A first sliding groove is provided on the outer wall of one side of the docking platform near the bottom. A second sliding groove is provided on the outer wall of one side of the docking platform near the first sliding groove. A second sliding plate is slidably connected to the inner wall of the first sliding groove. A limit plate is fixedly connected to one end of the second sliding plate. A plurality of second clearance grooves are provided on the outer wall of the second sliding plate near the guide block in a linear array. A fourth elastic plate is fixedly connected to the outer wall of the second sliding plate near the second clearance groove.

4. The drug delivery device for anesthesiology according to claim 3, characterized in that, A fourth sliding groove is formed on the outer wall of the second sliding plate away from the second clearance groove. A sliding handle is fixedly connected to the end of the second sliding plate away from the limiting plate. A pressing groove is formed on the outer wall of the sliding handle away from the second sliding plate. A third sliding plate is slidably connected to the inner wall of the fourth sliding groove. A plurality of third clearance grooves are formed on the outer wall of the third sliding plate away from the second clearance groove in a linear array.

5. The drug delivery device for anesthesiology according to claim 4, characterized in that, A pressing column is fixedly connected to one end of the third sliding plate near the sliding handle. A second spring is fixedly connected to one end of the pressing column near the third sliding plate. A first snap-fit ​​groove is provided on the outer wall of the docking platform near the push block. Limiting tubes are symmetrically snapped into the inner walls of the first snap-fit ​​groove near the top and bottom. A limiting part is provided on the outer wall of the limiting tube near the central axis of the docking platform.

6. The drug delivery device for anesthesiology according to claim 5, characterized in that, The first snap-fit ​​slot has a first snap-fit ​​plate symmetrically fixedly connected to the inner wall near the top and bottom. The first snap-fit ​​slot has a first clearance groove on the inner wall near the first snap-fit ​​plate. The chamber has a slot on the inner wall away from the first snap-fit ​​slot. The slot has a second snap-fit ​​slot on the inner wall near both sides. The slot has a third sliding groove on the inner wall near the bottom.

7. The drug delivery device for anesthesiology according to claim 6, characterized in that, An L-shaped connecting plate is slidably connected to the inner wall of the third sliding groove. A semi-circular plate is fixedly connected to one end of the L-shaped connecting plate near the first snap-fit ​​groove. A first inclined surface is symmetrically opened on the end wall of the L-shaped connecting plate near the first snap-fit ​​groove. A plurality of first elastic plates are fixedly connected to the outer wall of the semi-circular plate near the middle of the L-shaped connecting plate. The same second elastic plate is fixedly connected to the end of the plurality of first elastic plates away from the semi-circular plate.

8. The drug delivery device for anesthesiology according to claim 7, characterized in that, A U-shaped support column is fixedly connected to one end of the L-shaped connecting plate away from the semicircular plate. A first abutting block is symmetrically fixedly connected to the outer wall of the U-shaped support column near both ends. An inclined surface is provided at the end of the first abutting block away from the second elastic plate. A first sliding plate is fixedly connected to the outer wall of the first abutting block near the second elastic plate. A sliding column is fixedly connected to the outer wall of the first sliding plate away from the L-shaped connecting plate.

9. The drug delivery device for anesthesiology according to claim 8, characterized in that, A first spring is sleeved on the outer wall of the sliding column, and a second snap-fit ​​plate is slidably connected to the outer wall of the first sliding plate. A snap-fit ​​protrusion is fixedly connected to one end of the second snap-fit ​​plate near the semicircular plate. A fifth sliding groove is formed on the outer wall of the second snap-fit ​​plate near the middle, and a weakening groove is formed on the outer wall of the second snap-fit ​​plate near the fifth sliding groove.

10. The drug delivery device for anesthesiology according to claim 9, characterized in that, A first connecting plate is fixedly connected to the outer wall of the second snap-fit ​​plate on the other side of the fifth sliding groove. A third elastic plate is symmetrically fixedly connected to the outer wall of the second snap-fit ​​plate away from the snap-fit ​​protrusion. A second abutting block is fixedly connected to the end of the third elastic plate away from the second snap-fit ​​plate. An inclined surface is provided at the end of the second abutting block near the first abutting block.

Images