Anti-exosmosis chemotherapy dosing device for medical oncology

Abstract

The invention relates to an anti-exosmosis chemotherapy dosing device for medical oncology, and belongs to the field of medical instruments. Comprising a frame body and a medicine bottle, a base and two mounting boxes are arranged below the medicine bottle, the two mounting boxes are both slidably connected with the base, an annular frame is arranged above the base, and a fixing plate is fixedly connected between the annular frame and the base; and a positioning mechanism is arranged on the annular frame. By arranging the drug delivery mechanism, uniform and stable delivery of chemotherapy liquid medicine can be achieved, a driving shaft rotates to drive a first movable block on the inner wall of a movable ring to move in a guide groove, the first movable block can drive the movable ring to slowly move in the axial direction of the driving shaft under the action of a spiral groove, and meanwhile a first spring is compressed; and when the first movable block enters the strip-shaped groove from the spiral groove, the movable ring rapidly resets under the action of the elastic restoring force of the first spring, and the circulation is carried out, so that the movable ring generates axial reciprocating motion, and slow advancing and rapid retreating of the extrusion wheel are realized.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an anti-extravasation chemotherapy delivery device for oncology. Background Technology

[0002] Chemotherapy is a systemic treatment method that uses chemical drugs to kill or inhibit cancer cells. It is mainly administered via intravenous injection or oral administration and is widely used for radical, adjuvant, or palliative treatment of malignant tumors. Because many chemotherapy drugs are highly irritating or corrosive, they can easily cause vascular damage, local tissue necrosis, or even skin ulceration if administered via ordinary intravenous infusion. Extravasation prevention devices deliver drugs directly to a central venous vein, avoiding the passage of drugs through fragile peripheral blood vessels, thereby effectively preventing extravasation and related complications. Currently, the three main types of extravasation prevention devices commonly used in clinical practice are: central venous catheters, infusion ports, and indwelling venous needles. Extravasation prevention devices are implanted in the patient's neck or body during chemotherapy, connecting the chemotherapy drug solution to the device and delivering it directly into a central venous vein with a large blood flow.

[0003] An investigation revealed that a Chinese invention patent (publication number: CN118718163B) discloses an anti-extravasation chemotherapy drug delivery device for oncology, comprising a placement rack and a drug bottle. The lower end of the drug bottle is provided with a delivery mechanism for delivering injected drugs into the patient's body. The delivery mechanism includes a delivery tube, a temporary infusion tube fixedly installed at the lower end of the delivery tube, an infusion tube fixedly installed at the lower end of the temporary infusion tube, and an injection head fixedly installed at the lower end of the infusion tube.

[0004] While the aforementioned patent reduces the air intake of the control coil by setting the liquid level in the temporary reservoir to decrease the injection speed of the drug, thus allowing the drug delivery device to automatically adjust the injection speed according to the patient's venous pressure to avoid extravasation, the patient's daily activities, such as getting up and walking, raising their arms, or even coughing and turning over, directly change the local venous pressure. Chemotherapy drugs generally have strong cytotoxicity and irritation; rapid infusion may cause vascular pain, redness and swelling, or even extravasation leading to local tissue necrosis. On the other hand, a slow flow rate may prolong treatment time and increase the patient's physical and mental burden. To minimize patient discomfort and risks, chemotherapy administration must rely on precise infusion equipment that uses mechanical power to stably control the drug flow rate, ensuring that the drug is injected into the blood vessels at a uniform and continuous rate, guaranteeing treatment efficacy while improving patient tolerance and comfort.

[0005] Therefore, this application provides an anti-extravasation chemotherapy delivery device for medical oncology to meet the needs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an anti-extravasation chemotherapy delivery device for medical oncology, so as to solve the problem of insufficient and unstable flow rate of chemotherapy drugs.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] An extravasation-preventing chemotherapy delivery device for medical oncology includes a frame and a medicine bottle. A base and two mounting boxes are located below the medicine bottle, both of which are slidably connected to the base. A ring frame is located above the base, and a fixing plate is fixedly connected between the ring frame and the base. A positioning mechanism is provided on the ring frame to position the base on the medicine bottle. The positioning mechanism includes a drive disc, multiple moving blocks, and a clamping plate. A drug delivery mechanism is located inside the mounting boxes to deliver medicine evenly and stably. The drug delivery mechanism includes a drive shaft, a movable ring, a mounting base, a compression wheel, and two first springs. A guide groove is formed on the outer wall of the drive shaft. The guide groove includes a strip groove and a spiral groove, and the strip groove and the spiral groove are connected end-to-end.

[0009] Optionally, the top of the mounting box is provided with a sliding groove, and the bottom of the annular frame is fixedly connected to two connecting columns. The bottom of the connecting columns is fixedly connected to a slider, and the slider is slidably connected in the sliding groove.

[0010] Optionally, the drive disk is rotatably connected inside the ring frame, a rotating ring is rotatably connected to the outer wall of the ring frame and fixedly connected to the drive disk, the moving block is slidably connected to the ring frame, the clamping plate is fixedly connected to the moving block, and the bottom of the moving block is movably fitted onto the drive disk.

[0011] Optionally, the drive shaft is rotatably connected inside the mounting box, the movable ring is sleeved on the drive shaft, a first movable block is fixedly connected to the inner wall of the movable ring, and the first movable block is movably connected in the guide groove, and a mounting rod and two protrusions are fixedly connected to the outer wall of the movable ring.

[0012] Optionally, the mounting box is fixedly connected to two connecting plates and a first round rod. The first round rod slides through the protrusion, and the first spring is sleeved on the first round rod. The two ends of the first spring are fixedly connected to the protrusion and the inner wall of the mounting box, respectively.

[0013] Optionally, the extrusion wheel is rotatably connected to one side of the mounting base, and a circular plate is fixedly connected to the other side of the mounting base. A connecting rod is fixedly connected to the circular plate, and the connecting rod is slidably connected to the mounting rod. A second spring is sleeved on the connecting rod, and the two ends of the second spring are fixedly connected to the circular plate and the mounting rod, respectively.

[0014] Optionally, two second movable blocks are fixedly connected to the mounting base, a guide frame is fixedly connected to the connecting plate, a movable groove is opened in the guide frame, and the second movable blocks are movably connected in the movable groove, and a baffle is rotatably connected in the movable groove.

[0015] Optionally, a first gear is fixedly connected to the end of the drive shaft, and a third gear and two second gears are rotatably connected inside the base, with the two second gears meshing with each other, and a pulley assembly connecting the second gear and the third gear.

[0016] Optionally, a motor is fixedly connected inside the base, and the output end of the motor is coaxially fixed with the second gear.

[0017] Optionally, the base is symmetrically provided with an installation groove and a connecting groove. A limit block is slidably connected in the connecting groove. An elastic sheet is symmetrically fixed at the bottom of the limit block and is fixedly connected in the connecting groove. A second round rod is fixedly connected in the installation groove, and a third spring is sleeved on the second round rod. A movable plate is fixedly connected to the installation box and is slidably connected in the installation groove. The second round rod slides through the movable plate. The two ends of the third spring are fixedly connected to the movable plate and the inner wall of the installation groove, respectively.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In the above scheme, by setting up a drug delivery mechanism, uniform and stable delivery of chemotherapy drugs can be achieved. The rotation of the drive shaft can drive the first movable block on the inner wall of the movable ring to move in the guide groove. When the first movable block is in the spiral groove, it will drive the movable ring to move slowly along the axial direction of the drive shaft, while compressing the first spring. When the first movable block enters the strip groove from the spiral groove, the movable ring will quickly reset under the elastic restoring force of the first spring. This cycle makes the movable ring generate axial reciprocating motion, realizing the slow advance and fast retreat of the squeezing wheel. The drive shaft rotates at a constant speed under the drive of the motor. The reciprocating motion cycle and stroke of the movable ring are fixed. Therefore, the squeezing frequency and squeezing force of the squeezing wheel on the infusion tube are consistent, thereby realizing uniform and stable delivery of chemotherapy drugs, effectively avoiding the risk of extravasation caused by flow rate fluctuations and the discomfort caused to patients.

[0020] The position of the squeezing wheel is limited by the guide frame and the movable groove. The second spring can push the squeezing wheel to squeeze the infusion tube. When the squeezing wheel moves from top to bottom, it can always keep squeezing the infusion tube, thus pushing the medicine to drip down. When the second movable block pushes the baffle to the bottom of the guide frame, the drive shaft will drive the squeezing wheel to move from bottom to top. At this time, the baffle will limit the second movable block, so that the second movable block returns along the other side of the movable groove. At this time, a certain distance is maintained between the squeezing wheel and the infusion tube, and the infusion tube is no longer squeezed to prevent the medicine from flowing back. Repeating the above operation can periodically squeeze the infusion tube to achieve uniform and stable medicine delivery.

[0021] By setting a positioning mechanism, the drug delivery device is installed directly below the medicine bottle. The adjustable multiple clamping plates can accommodate most medicine bottles, improving the applicability of the device. Furthermore, the drug delivery device is installed directly at the bottom of the medicine bottle, which does not appear too obtrusive and can reduce the psychological burden on patients when using it. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a chemotherapy delivery device for preventing extravasation in oncology.

[0023] Figure 2 A partial structural cross-sectional view of an anti-extravasation chemotherapy delivery device used in oncology.

[0024] Figure 3 A structurally exploded diagram of an anti-extravasation chemotherapy delivery device for medical oncology.

[0025] Figure 4 for Figure 3 Enlarged view of a local part of the structure;

[0026] Figure 5 This is a schematic diagram of the drive shaft and movable ring in an anti-extravasation chemotherapy delivery device for medical oncology.

[0027] Figure 6 A cross-sectional view of the base and mounting box in an anti-extravasation chemotherapy delivery device for medical oncology.

[0028] Figure 7 This is a schematic diagram of the drug delivery mechanism in an anti-extravasation chemotherapy drug delivery device for medical oncology.

[0029] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0030] Figure 9 for Figure 7 Enlarged view of point B in the middle;

[0031] Figure 10 This is a structural connection diagram of the mounting box and base in an anti-extravasation chemotherapy delivery device for medical oncology.

[0032] Figure label:

[0033] 1. Frame; 2. Medicine bottle; 3. Base; 4. Mounting box; 5. Ring frame; 6. Fixing plate; 7. Drive plate; 8. Rotary ring; 9. Slide groove; 10. Limiting block; 11. Drive shaft; 12. Mounting groove; 13. Connecting plate; 14. Moving block; 15. Clamping plate; 16. Connecting column; 17. Sliding block; 18. Strip groove; 19. Spiral groove; 20. Movable ring; 21. Protrusion; 22. First movable block; 23. Installation... 24. Mounting rod; 25. First gear; 26. Second gear; 27. Pulley assembly; 28. Third gear; 29. ​​Guide frame; 30. Movable groove; 31. First round rod; 32. First spring; 33. Baffle plate; 34. Connecting rod; 35. Second spring; 36. Round plate; 37. Mounting base; 38. Second movable block; 39. Extrusion wheel; 40. Elastic plate; 41. Moving plate; 42. Second round rod; 43. Third spring. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0035] like Figures 1 to 10 As shown, an embodiment of the present invention provides an anti-extravasation chemotherapy drug delivery device for oncology, including a frame 1 and a medicine bottle 2. A base 3 and two mounting boxes 4 are provided below the medicine bottle 2. Both mounting boxes 4 are slidably connected to the base 3. An annular frame 5 is provided above the base 3, and a fixing plate 6 is fixedly connected between the annular frame 5 and the base 3. A positioning mechanism is provided on the annular frame 5 to position the base 3 on the medicine bottle 2. The positioning mechanism includes a drive disk 7, multiple moving blocks 14 and a clamping plate 15. A drug delivery mechanism is provided inside the mounting box 4 to deliver the drug evenly and stably. The drug delivery mechanism includes a drive shaft 11, a movable ring 20, a mounting base 36, a compression wheel 38 and two first springs 31. A guide groove is provided on the outer wall of the drive shaft 11. The guide groove includes a strip groove 18 and a spiral groove 19, and the strip groove 18 and the spiral groove 19 are connected end to end.

[0036] like Figure 3 and Figure 4As shown, the top of the mounting box 4 has a groove 9, and the bottom of the ring frame 5 is fixedly connected to two connecting posts 16. The bottom of the connecting posts 16 is fixedly connected to a slider 17, which is slidably connected in the groove 9. The drive disk 7 is rotatably connected in the ring frame 5. A rotating ring 8 is rotatably connected to the outer wall of the ring frame 5, and the rotating ring 8 is fixedly connected to the drive disk 7. The moving block 14 is slidably connected to the ring frame 5, and the clamping plate 15 is fixedly connected to the moving block 14. The bottom of the moving block 14 is movably fitted onto the drive disk 7. In use, rotating the rotating ring 8 causes the drive disk 7 to move within the ring frame 5. Synchronous rotation, since the bottom of the moving block 14 is movably fitted onto the drive disk 7, the rotation of the drive disk 7 will cause multiple moving blocks 14 to slide synchronously along the radial direction of the ring frame 5, thereby driving the clamping plate 15 to move closer to the medicine bottle 2 and finally clamp the outer wall of the mouth of the medicine bottle 2, completing the positioning and fixing. During this process, the adjustable multiple clamping plates 15 can adapt to medicine bottles 2 of different diameters, improving the applicability of the device. Medical staff only need to perform simple operations to complete the installation. The drug delivery mechanism is directly installed at the bottom of the medicine bottle 2 without appearing too abrupt, which can reduce the psychological burden on patients when using it.

[0037] like Figure 5 and Figure 7 As shown, the drive shaft 11 is rotatably connected inside the mounting box 4. A movable ring 20 is sleeved on the drive shaft 11. A first movable block 22 is fixedly connected to the inner wall of the movable ring 20, and the first movable block 22 is movably connected within a guide groove. A mounting rod 23 and two protrusions 21 are fixedly connected to the outer wall of the movable ring 20. Two connecting plates 13 and a first round rod 30 are fixedly connected inside the mounting box 4. The first round rod 30 slides through the protrusions 21. A first spring 31 is sleeved on the first round rod 30, and both ends of the first spring 31 are fixedly connected to the protrusions 21 and the inner wall of the mounting box 4, respectively. During use, the drive shaft 11 rotates... The first movable block 22 in the guide groove on the outer wall of the drive shaft 11 begins to move. When the first movable block 22 enters the spiral groove 19, the movable ring 20 will slowly move along the axial direction of the drive shaft 11 under the guidance of the spiral groove 19. At the same time, the protrusion 21 on the outer wall of the movable ring 20 slides on the first round rod 30 and compresses the first spring 31. When the first movable block 22 transitions from the spiral groove 19 to the strip groove 18, the axial constraint of the strip groove 18 on the first movable block 22 disappears, and the elastic restoring force of the first spring 31 will push the movable ring 20 to quickly reset, realizing the slow advance and fast retreat of the movable ring 20.

[0038] like Figures 7 to 9As shown, the extrusion wheel 38 is rotatably connected to one side of the mounting base 36. A circular plate 35 is fixedly connected to the other side of the mounting base 36. A connecting rod 33 is fixedly connected to the circular plate 35, and the connecting rod 33 is slidably connected to the mounting rod 23. A second spring 34 is sleeved on the connecting rod 33. The two ends of the second spring 34 are fixedly connected to the circular plate 35 and the mounting rod 23, respectively. Two second movable blocks 37 are fixedly connected to the mounting base 36. A guide frame 28 is fixedly connected to the connecting plate 13. A movable groove 29 is opened in the guide frame 28. The second movable block 37 is movably connected to the movable groove 29, and a baffle 32 is rotatably connected in the movable groove 29. The movable groove 29 is set in a right trapezoid. When the second movable block 37 moves to the bottom edge of the trapezoid, the squeezing wheel 38 always keeps squeezing the infusion tube. When the second movable block 37 moves to the top edge of the trapezoid after passing the inclined side of the trapezoid, it can drive the squeezing wheel 38 to separate from the infusion tube and stop squeezing the infusion tube. When the second movable block 37 moves to the straight edge of the trapezoid, under the action of the second spring 34, it pushes the squeezing wheel 38 to squeeze the infusion tube again.

[0039] like Figure 6 and Figure 7 As shown, a first gear 24 is fixedly connected to the end of the drive shaft 11. A third gear 27 and two second gears 25 are rotatably connected inside the base 3, and the two second gears 25 mesh with each other. A pulley assembly 26 is connected between the second gear 25 and the third gear 27. A motor is fixedly connected inside the base 3. The output end of the motor is coaxially fixed with the second gear 25. When in use, the motor is started to drive the second gear 25 to rotate. The second gear 25 drives the first gear 24 to rotate through another meshing second gear 25. At the same time, it drives the third gear 27 to rotate through the pulley assembly 26, which in turn drives the first gear 24 meshing with the third gear 27 to rotate. This drives the two drive shafts 11 to rotate synchronously in opposite directions, driving the two symmetrically arranged drug delivery mechanisms to operate.

[0040] It should be noted that the motor is connected to an external power source via wires. The external power source includes a battery for providing power to the motor and a control switch for controlling its start and stop. The external power source is existing technology. The specific model and specifications of the motor need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts existing technology in this field, so it will not be described in detail.

[0041] like Figure 3 and Figure 10As shown, the base 3 is symmetrically provided with an installation groove 12 and a connecting groove. A limit block 10 is slidably connected in the connecting groove. An elastic sheet 39 is symmetrically fixed at the bottom of the limit block 10 and is fixedly connected in the connecting groove. A second round rod 41 is fixedly connected in the installation groove 12 and a third spring 42 is sleeved on the second round rod 41. A movable plate 40 is fixedly connected in the installation box 4 and is slidably connected in the installation groove 12. The second round rod 41 slides through the movable plate 40. The two ends of the third spring 42 are fixedly connected to the movable plate 40 and the inner wall of the installation groove 12, respectively.

[0042] When in use, push the limiting block 10 downward and squeeze the elastic sheet 39 to release the limiting block 10 from limiting the mounting box 4. At this time, the stretched third spring 42 drives the moving plate 40 to move, which in turn drives the mounting box 4 fixed to the moving plate 40 to move, so that the two mounting boxes 4 move away from each other, making it easier to place the infusion tube between the squeezing wheels 38. After the infusion tube is placed, push the two mounting boxes 4 closer to each other, so that the moving plate 40 stretches the third spring 42, making it easier for the mounting box 4 to reset later. When the two mounting boxes 4 are against each other, the limiting block 10 is aligned with the notch on the mounting box 4, and the limiting block 10 is no longer squeezed. Under the action of the elastic sheet 39, the limiting block 10 is pushed to reset and limit the mounting box 4 again.

[0043] The working principle of the technical solution provided by this invention is as follows:

[0044] During the operation of this equipment, medical staff first need to place the medicine bottle 2 on the frame 1, and the positioning mechanism will achieve a stable connection between the base 3 and the medicine bottle 2. In specific operation, the rotating ring 8 is rotated, and the rotating ring 8 drives the drive disk 7 to rotate synchronously in the ring frame 5. Since the bottom of the moving block 14 is movably fitted on the drive disk 7, the rotation of the drive disk 7 will cause multiple moving blocks 14 to slide synchronously along the radial direction of the ring frame 5, thereby driving the clamping plate 15 to move closer to the medicine bottle 2 and finally clamp the outer wall of the mouth of the medicine bottle 2 to complete the positioning and fixation. During this process, the adjustable multiple clamping plates 15 can adapt to medicine bottles 2 of different diameters, improving the versatility of the device.

[0045] Subsequently, one end of the infusion tube is connected to the outlet of the medicine bottle 2, and the infusion tube is clamped between the mounting boxes 4 so that the infusion tube is placed between the squeezing wheels 38. The end of the infusion tube is connected to the patient's injection site. The motor is started, and the output end of the motor drives the second gear 25, which is fixed coaxially with it, to rotate. Under the action of the pulley group 26, the first gear 24 and the third gear 27, the two drive shafts 11 are driven to rotate synchronously in opposite directions, thereby driving the two symmetrically arranged drug delivery mechanisms to operate synchronously.

[0046] Furthermore, when the drive shaft 11 rotates, the first movable block 22 in the guide groove on its outer wall begins to move. When the first movable block 22 enters the spiral groove 19, under the guidance of the spiral groove 19, the movable ring 20 will slowly move along the axial direction of the drive shaft 11. At the same time, the protrusion 21 on the outer wall of the movable ring 20 slides on the first round rod 30 and compresses the first spring 31. When the first movable block 22 transitions from the spiral groove 19 to the strip groove 18, the axial constraint of the strip groove 18 on the first movable block 22 disappears, and the elastic restoring force of the first spring 31 will push the movable ring 20 to quickly reset. This cycle repeats, so that the movable ring 20 produces a stable axial reciprocating motion.

[0047] Furthermore, the reciprocating motion of the movable ring 20 is transmitted to the connecting rod 33 via the mounting rod 23. The connecting rod 33 drives the mounting base 36 and the squeezing wheel 38 to move synchronously. The second movable block 37 on the mounting base 36 slides within the movable groove 29 of the guide frame 28. As the squeezing wheel 38 moves slowly downward with the movable ring 20, the second movable block 37 pushes the baffle 32 to rotate and move downward along one side of the movable groove 29. During this process, under the constraint of the movable groove 29, the second movable block 37 makes the squeezing wheel 38 fit tightly against the infusion tube and squeeze it. As the squeezing wheel 38 moves downward... As the infusion tube moves, the medication is squeezed out at a uniform speed. When the second movable block 37 moves to the bottom of the movable groove 29, the second movable block 37 separates from the baffle 32. The baffle 32 resets under the elastic action of the torsion spring. At this time, the movable ring 20 quickly resets upward under the action of the first spring 31. The second movable block 37 is blocked by the baffle 32 and can only move upward along the other side of the movable groove 29. At this time, the squeezing wheel 38 separates from the infusion tube and no longer squeezes, avoiding backflow of the medication. This cycle is repeated to achieve slow advance and fast retreat of the squeezing wheel 38, thus achieving uniform and stable delivery of chemotherapy medication.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A chemotherapy administration device for oncology with extravasation prevention, characterized in that, It includes a frame (1) and a medicine bottle (2). The medicine bottle (2) is provided with a base (3) and two mounting boxes (4) below it. Both mounting boxes (4) are slidably connected to the base (3). A ring frame (5) is provided above the base (3), and a fixing plate (6) is fixedly connected between the ring frame (5) and the base (3). The ring frame (5) is provided with a positioning mechanism, which is used to position the base (3) on the medicine bottle (2). The positioning mechanism includes a drive disk (7), multiple moving blocks (14) and a clamping plate (15). The mounting box (4) is equipped with a drug delivery mechanism for uniformly and stably delivering drugs. The drug delivery mechanism includes a drive shaft (11), a movable ring (20), a mounting base (36), a squeezing wheel (38), and two first springs (31). A guide groove is provided on the outer wall of the drive shaft (11). The guide groove includes a strip groove (18) and a spiral groove (19), and the strip groove (18) and the spiral groove (19) are connected end to end.

2. The oncology chemotherapy administration device for preventing extravasation as described in claim 1, characterized in that, The top of the mounting box (4) is provided with a sliding groove (9), and the bottom of the ring frame (5) is fixedly connected with two connecting columns (16). The bottom of the connecting columns (16) is fixedly connected with a slider (17), and the slider (17) is slidably connected in the sliding groove (9).

3. The oncology chemotherapy administration device for preventing extravasation as described in claim 2, characterized in that, The drive disk (7) is rotatably connected inside the ring frame (5). A rotating ring (8) is rotatably connected to the outer wall of the ring frame (5), and the rotating ring (8) is fixedly connected to the drive disk (7). The moving block (14) is slidably connected to the ring frame (5). The clamping plate (15) is fixedly connected to the moving block (14). The bottom of the moving block (14) is movably fitted onto the drive disk (7).

4. The oncology chemotherapy administration device for preventing extravasation as described in claim 1, characterized in that, The drive shaft (11) is rotatably connected inside the mounting box (4). The movable ring (20) is sleeved on the drive shaft (11). A first movable block (22) is fixedly connected to the inner wall of the movable ring (20), and the first movable block (22) is movably connected in the guide groove. An mounting rod (23) and two protrusions (21) are fixedly connected to the outer wall of the movable ring (20).

5. The oncology chemotherapy administration device for preventing extravasation as described in claim 4, characterized in that, The mounting box (4) is fixedly connected to two connecting plates (13) and a first round rod (30). The first round rod (30) slides through the protrusion (21). The first spring (31) is sleeved on the first round rod (30), and the two ends of the first spring (31) are fixedly connected to the protrusion (21) and the inner wall of the mounting box (4) respectively.

6. The oncology chemotherapy administration device for preventing extravasation as described in claim 5, characterized in that, The extrusion wheel (38) is rotatably connected to one side of the mounting base (36), and a circular plate (35) is fixedly connected to the other side of the mounting base (36). A connecting rod (33) is fixedly connected to the circular plate (35), and the connecting rod (33) is slidably connected to the mounting rod (23). A second spring (34) is sleeved on the connecting rod (33), and the two ends of the second spring (34) are fixedly connected to the circular plate (35) and the mounting rod (23) respectively.

7. The oncology chemotherapy administration device for preventing extravasation according to claim 6, characterized in that, Two second movable blocks (37) are fixedly connected to the mounting base (36), and a guide frame (28) is fixedly connected to the connecting plate (13). A movable groove (29) is opened in the guide frame (28), and the second movable blocks (37) are movably connected in the movable groove (29). A baffle (32) is rotatably connected in the movable groove (29).

8. The oncology chemotherapy administration device for preventing extravasation according to claim 1, characterized in that, The end of the drive shaft (11) is fixedly connected to a first gear (24), and the base (3) is rotatably connected to a third gear (27) and two second gears (25), and the two second gears (25) mesh with each other. A pulley group (26) is connected between the second gear (25) and the third gear (27).

9. The oncology chemotherapy administration device for preventing extravasation according to claim 8, characterized in that, A motor is fixedly connected inside the base (3), and the output end of the motor is coaxially fixed with the second gear (25).

10. The anti-extravasation chemotherapy delivery device for medical oncology according to claim 1, characterized in that, The base (3) is symmetrically provided with an installation groove (12) and a connecting groove. A limit block (10) is slidably connected in the connecting groove. An elastic sheet (39) is symmetrically fixed at the bottom of the limit block (10) and the elastic sheet (39) is fixedly connected in the connecting groove. A second round rod (41) is fixedly connected in the installation groove (12) and a third spring (42) is sleeved on the second round rod (41). A movable plate (40) is fixedly connected in the installation box (4) and the movable plate (40) is slidably connected in the installation groove (12). The second round rod (41) slides through the movable plate (40). The two ends of the third spring (42) are fixedly connected to the movable plate (40) and the inner wall of the installation groove (12) respectively.

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