An effusion drainage device for oncology care

Abstract

The application discloses a hydrops discharging device for oncology nursing, which comprises a placing cylinder and a puncture needle cylinder which can be detachably installed in the placing cylinder, the inside of the placing cylinder is provided with a driving clamping assembly for installing and driving the puncture needle cylinder, the driving clamping assembly comprises a clamping assembly and a driving assembly, and the bottom of the placing cylinder is provided with a sterilizing assembly for sterilizing the needle head of the puncture needle cylinder; the ear plate clamping seat drives the puncture needle cylinder to move downwards by rotating the knob two, the needle head at the bottom of the puncture needle cylinder gradually penetrates through the bottom of the placing cylinder and slowly inserts into the patient's body, through the mechanical transmission type downward moving structure, medical staff do not need to manually press the puncture needle cylinder, the rotation amplitude of the control knob two can be controlled to accurately adjust the insertion speed and depth of the puncture needle, the risk of needle head deviation and puncture too deep caused by improper force control during manual operation is effectively reduced, and the insertion process is more stable and smooth.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a fluid drainage device for oncology care. Background Technology

[0002] In oncology clinical nursing, patients with malignant tumors often experience complications such as pleural effusion, abdominal effusion, and pericardial effusion due to tumor cell infiltration, metastasis, and treatment side effects. If these effusions are not drained in a timely and safe manner, they can compress surrounding tissues and organs, causing a series of symptoms such as difficulty breathing, abdominal pain, and abdominal distension. This not only seriously affects the patient's quality of life but may also worsen the disease progression. Therefore, effusion drainage is a frequent and crucial procedure in oncology nursing.

[0003] Currently, the most common methods for draining effusions in clinical practice rely on traditional syringe puncture or simple drainage devices. However, these methods have several problems that urgently need to be addressed in practical applications. First, traditional syringe puncture relies entirely on manual operation by medical staff. During the puncture, the syringe must be held and pressed down at the puncture point. Due to the lack of stable mechanical support, hand tremors can easily cause the needle to deviate, potentially missing the target effusion cavity and damaging surrounding blood vessels, nerves, and other important tissues, increasing patient pain and the risk of complications. Secondly, the needle insertion depth depends entirely on the clinical experience of medical staff, making quantitative control impossible. For patients who are thin or have deep effusions, it is difficult to accurately determine the puncture depth, often resulting in shallow insertion leading to poor drainage or deep insertion causing organ damage.

[0004] Secondly, during the drainage process, traditional syringes require medical staff to continuously and manually pull the piston, which is physically demanding. Especially in scenarios where a large amount of fluid needs to be drained over a long period of time, medical staff's hands are prone to fatigue, resulting in uneven piston pulling speed. This may not only cause sudden changes in pressure within the patient's body cavity, causing discomfort such as dizziness and nausea, but may also affect drainage efficiency due to interruption of the operation. Summary of the Invention

[0005] The purpose of this invention is to provide a fluid drainage device for oncology care, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fluid drainage device for oncology nursing, comprising a placement cylinder and a puncture needle that can be detachably installed inside the placement cylinder. The placement cylinder is equipped with a drive engagement assembly for installing the puncture needle and driving the puncture needle. The drive engagement assembly includes a engagement assembly and a drive assembly. The bottom of the placement cylinder is equipped with a disinfection assembly for disinfecting the needle tip of the puncture needle.

[0007] Preferably, the locking assembly includes a push handle locking seat and an ear plate locking seat. A second movable block is fixedly installed on the outer side of the push handle locking seat, and a second limiting slider is fixedly installed on the outer side of the second movable block. A first movable block is fixedly installed on the outer side of the ear plate locking seat, and a first limiting slider is fixedly installed on the outer side of the first movable block. A limiting baffle is fixedly installed on the inner side of the ear plate locking seat.

[0008] Preferably, the drive assembly includes a threaded rod and an external threaded cylinder. A knob two is fixedly installed on the top of the threaded rod, and the bottom of the threaded rod is rotatably connected to the bottom of the inner cavity of the placement cylinder. A movable block one is threadedly connected to the outside of the threaded rod, and an internal threaded ring is threadedly connected to the outside of the external threaded cylinder. Four movable push rods are fixedly installed on the top of the internal threaded ring. A circular through hole is opened inside the movable block one, and the four movable push rods pass through the circular through hole and are fixedly connected to the bottom of the movable block two. A cross-shaped inner sleeve rod is slidably installed inside the external threaded cylinder, and a transmission wheel one is fixedly installed on the top of the cross-shaped inner sleeve rod. A transmission belt is sleeved on the outside of the transmission wheel one, and a transmission wheel two is sleeved on the inside of the transmission belt at the end away from the transmission wheel one. A knob one is fixedly installed on the top of the transmission wheel two.

[0009] Preferably, a connecting plate is fixedly installed at the bottom of the movable block one, and a support block is fixedly installed at the end of the connecting plate away from the movable block one, and the bottom of the external threaded cylinder is rotatably connected to the top of the support block.

[0010] Preferably, the placement cylinder has a first limiting groove inside, the first limiting slider is slidably installed inside the first limiting groove, and the placement cylinder has a second limiting groove inside, and the second limiting slider is slidably installed inside the second limiting groove.

[0011] Preferably, a scale finger block one is fixedly installed on the outer side of the push handle holder, and a scale finger block two is fixedly installed on the outer side of the ear plate holder. The placement tube is made of transparent plastic, and scale lines are provided inside the placement tube at positions corresponding to scale finger block one and scale finger block two.

[0012] Preferably, the disinfection component includes an installation cylinder and a rubber sleeve. The bottom of the installation cylinder has an annular snap-fit ​​groove, and the installation cylinder also has a cylindrical snap-fit ​​groove. A snap-fit ​​ring is fixedly installed inside the rubber sleeve, and a snap-fit ​​cylinder is fixedly installed on the top of the snap-fit ​​ring. A disinfection cotton is fixedly installed inside the snap-fit ​​cylinder, and the disinfection cotton has a needle insertion hole inside.

[0013] Preferably, the rubber sleeve is fitted onto the outside of the mounting cylinder, the snap ring is snapped onto the inside of the annular snap groove, the snap cylinder is snapped onto the inside of the cylindrical snap groove, and a protective cover is fixedly installed at the bottom of the placement cylinder, and the protective cover is made of transparent plastic.

[0014] Preferably, the outer side of the placement cylinder is provided with a pick-and-place slot, the inner side of the pick-and-place slot is fitted with a cover via a hinge, and the outer side of the cover is fixedly fitted with a handle.

[0015] Preferably, a handle is fixedly installed on the outside of the placement tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by rotating the second knob, the ear plate holder moves the puncture needle barrel downward, so that the needle tip at the bottom of the puncture needle barrel gradually passes through the bottom of the placement tube and is slowly inserted into the patient's body. Through this mechanical transmission downward movement structure, medical staff do not need to manually press the puncture needle barrel. They can accurately adjust the insertion speed and depth of the puncture needle by controlling the rotation amplitude of the second knob. This not only effectively reduces the risk of needle tip deviation and excessive puncture caused by improper force control during manual operation, making the insertion process more stable and smooth, but also reduces the operational intensity of medical staff and improves the convenience of operation. In addition, by rotating the second transmission wheel, the push handle holder drives the push handle of the puncture syringe to move upward, so that the piston part of the puncture syringe moves within the syringe barrel, thereby drawing the fluid in the patient's body into the syringe through the needle, thus draining the fluid from the patient. Also using a mechanical transmission method, medical staff can precisely adjust the moving speed of the piston part of the puncture syringe by controlling the rotation speed and number of turns of the first knob, thereby controlling the rate of fluid extraction, avoiding discomfort to the patient due to excessively fast extraction, and improving the convenience and stability of the operation. In addition, when the needle tip of the puncture syringe extends from the bottom of the placement tube, the needle body is inserted through the needle insertion hole inside the sterile cotton. The sterile cotton can disinfect and wipe the needle tip of the puncture syringe, effectively removing any dust, bacteria, or other contaminants that may remain on the surface of the needle tip. This design of immediate disinfection before puncture avoids the problem of secondary contamination caused by prolonged storage or environmental factors after pre-disinfection of traditional puncture needles. It ensures the asepticity of the needle during the insertion of the needle into the patient's body from the source, greatly improving the safety of clinical puncture operations and reducing the risk of infection caused by puncture. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0019] Figure 3 This is a three-dimensional structural diagram of the disinfection component of the present invention.

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention with the cap removed.

[0021] Figure 5 This is a three-dimensional structural diagram of the drive card assembly of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the drive card assembly of the present invention from another perspective.

[0023] Figure 7 This is a three-dimensional structural diagram of the disinfection component of the present invention.

[0024] In the diagram: 1. Placement tube; 2. Handle; 3. Protective cover; 4. Cap; 5. Pull handle; 6. Knob 1; 7. Knob 2; 8. Rubber sleeve; 9. Disinfectant cotton; 10. Scale finger block 1; 11. Push handle holder; 12. Moving block 1; 13. Pick-up and drop slot; 14. Limiting slide groove 1; 15. Threaded rod; 16. Limiting slide groove 2; 17. Cross inner sleeve rod; 18. Snap-fit ​​ring; 19. Snap-fit ​​tube; 20. Needle insertion hole; 21. 1. Mounting cylinder; 22. Annular snap-fit ​​groove; 23. Cylindrical snap-fit ​​groove; 24. Moving block two; 25. Limiting slider two; 26. Ear plate holder; 27. Limiting slider one; 28. Transmission wheel one; 29. ​​Transmission wheel two; 30. Transmission belt; 31. Limiting baffle; 32. Connecting vertical plate; 33. Moving push rod; 34. External threaded cylinder; 35. Support block; 36. Internal threaded ring; 37. Scale index block two; 38. Puncture needle. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-7This invention provides a technical solution: a fluid drainage device for oncology nursing, comprising a placement cylinder 1 and a puncture needle 38 detachably installed inside the placement cylinder 1. The placement cylinder 1 is equipped with a drive-locking assembly for mounting the puncture needle 38 and driving the puncture needle 38. The drive-locking assembly includes a locking component and a drive component. The locking component includes a push handle holder 11 and an ear plate holder 26. A second movable block 24 is fixedly installed on the outer side of the push handle holder 11, and a second limit slider 25 is fixedly installed on the outer side of the second movable block 24. A first movable block 12 is fixedly installed on the outer side of the ear plate holder 26. A limiting slider 27 is fixedly installed on the outer side of the first 12, and a limiting baffle 31 is fixedly installed on the inner side of the ear plate holder 26. The drive assembly includes a threaded rod 15 and an external threaded cylinder 34. A knob 7 is fixedly installed on the top of the threaded rod 15, and the bottom of the threaded rod 15 is rotatably connected to the bottom of the inner cavity of the placement cylinder 1. The moving block 12 is threadedly connected to the outer side of the threaded rod 15, and an internal threaded ring 36 is threadedly connected to the outer side of the external threaded cylinder 34. Four moving push rods 33 are fixedly installed on the top of the internal threaded ring 36. A circular through hole is opened inside the moving block 12, and the four moving push rods 33 pass through the circular through hole and are connected to the moving block 12. The bottom of the external threaded cylinder 34 is fixedly connected. A cross-shaped inner sleeve rod 17 is slidably installed inside the external threaded cylinder 34. A transmission wheel 28 is fixedly installed on the top of the cross-shaped inner sleeve rod 17. A transmission belt 30 is sleeved on the outer side of the transmission wheel 28. A transmission wheel 29 is sleeved on the inner side of the end of the transmission belt 30 away from the transmission wheel 28. A knob 6 is fixedly installed on the top of the transmission wheel 29. A connecting plate 32 is fixedly installed on the bottom of the moving block 12. A support block 35 is fixedly installed on the end of the connecting plate 32 away from the moving block 12. The bottom of the external threaded cylinder 34 is rotatably connected to the top of the support block 35. The cylinder 1 is placed in the center. The internal part of the placement cylinder 1 has a limiting groove 14, and the limiting slider 27 is slidably installed inside the limiting groove 14. The internal part of the placement cylinder 1 has a limiting groove 26, and the limiting slider 25 is slidably installed inside the limiting groove 26. The outer side of the push handle seat 11 is fixedly installed with a scale finger block 10, and the outer side of the ear plate seat 26 is fixedly installed with a scale finger block 27. The placement cylinder 1 is made of transparent plastic. The internal part of the placement cylinder 1 is provided with scale lines corresponding to the positions of the scale finger block 10 and the scale finger block 27. The bottom of the placement cylinder 1 is equipped with a disinfection component for disinfecting the needle head of the puncture syringe 38.

[0027] The working principle of the above technical solution is as follows: In use, the puncture needle 38 is first placed inside the placement cylinder 1, with the push handle of the puncture needle 38 engaged inside the push handle holder 11, and the ear handle of the puncture needle 38 engaged inside the ear plate holder 26. Then, the center of the bottom of the placement cylinder 1 is aligned with the patient's desired puncture site. The knob 7 is then turned, causing the threaded rod 15 to rotate. Under the limiting of the limiting slider 27 and the limiting groove 14, the moving block 12 moves downwards, thereby causing the puncture needle 38 to move downwards via the ear plate holder 26, thus allowing the puncture needle to be inserted. The needle tip of syringe 38 extends through the bottom of the placement cylinder 1, allowing the needle tip at the bottom of syringe 38 to gradually pass through the bottom of the placement cylinder 1 and be slowly inserted into the patient's body. Through this mechanically driven downward movement structure, medical personnel do not need to manually press the syringe 38; they can precisely adjust the insertion speed and depth of the needle by controlling the rotation of knob 2 7. This not only effectively reduces the risks of needle deviation and excessive puncture due to improper force control during manual operation, making the insertion process more stable and smooth, but also reduces the operational intensity of medical personnel and improves operational convenience. Furthermore, the set scale finger block 2 37 and the interior of the placement cylinder 1... The displacement scale allows medical staff to intuitively and accurately understand the real-time insertion depth of the needle, and then flexibly adjust the puncture depth according to the patient's age, body type, condition, and other actual circumstances to meet the personalized puncture needs of different patients. Additionally, rotating knob 6 drives transmission wheel 29 to rotate, which in turn drives transmission wheel 28 via transmission belt 30. This, in turn, drives external threaded cylinder 34 via cross inner sleeve rod 17, causing internal threaded ring 36 to move outside external threaded cylinder 34. This, in turn, pushes moving block 24 via moving push rod 33, and drives puncture needle 38 via push handle holder 11. The push handle moves upward, causing the piston of the puncture syringe 38 to move within the syringe barrel, thereby drawing the fluid from the patient's body into the syringe through the needle, thus draining the fluid from the patient. Also using a mechanical transmission method, medical staff can precisely adjust the moving speed of the piston of the puncture syringe 38 by controlling the rotation speed and number of turns of knob 6, thereby controlling the rate of fluid extraction and avoiding discomfort to the patient due to excessive extraction, improving the convenience and stability of operation. Moreover, through the scale indicator 2 37 in conjunction with the liquid level scale inside the placement cylinder 1, medical staff can promptly understand the amount of fluid drained from the patient.

[0028] In another implementation scheme, such as Figures 1-7As shown, the disinfection assembly includes an installation cylinder 21 and a rubber sleeve 8. The bottom of the installation cylinder 21 has an annular snap-fit ​​groove 22 and a cylindrical snap-fit ​​groove 23. A snap-fit ​​ring 18 is fixedly installed inside the rubber sleeve 8, and a snap-fit ​​cylinder 19 is fixedly installed on the top of the snap-fit ​​ring 18. A disinfection cotton 9 is fixedly installed inside the snap-fit ​​cylinder 19, and a needle insertion hole 20 is opened inside the disinfection cotton 9. The rubber sleeve 8 is sleeved and installed on the outside of the installation cylinder 21. The snap-fit ​​ring 18 is snapped into the inside of the annular snap-fit ​​groove 22, and the snap-fit ​​cylinder 19 is snapped into the inside of the cylindrical snap-fit ​​groove 23. A protective cover 3 is fixedly installed at the bottom of the placement cylinder 1, and the protective cover 3 is made of transparent plastic.

[0029] When the needle tip of the puncture syringe 38 extends from the bottom of the placement tube 1, the needle body is inserted through the needle insertion hole 20 inside the sterile cotton 9. The sterile cotton 9 can disinfect and wipe the needle tip of the puncture syringe 38, effectively removing any dust, bacteria, or other contaminants that may remain on the surface of the needle tip. This design of immediate disinfection before puncture avoids the problem of secondary contamination caused by prolonged storage or environmental factors after pre-disinfection of traditional puncture needles. It ensures the asepticity of the needle during the insertion of the needle into the patient's body from the source, greatly improving the safety of clinical puncture operations and reducing the risk of infection caused by puncture. In addition, the rubber sleeve 8 can be pulled off from the outside of the installation tube 21, thereby causing the locking ring 18 to detach from the inside of the annular locking groove 22, and causing the locking tube 19 carrying the sterile cotton 9 to detach from the inside of the cylindrical locking groove 23, so that the sterile cotton 9 can be replaced. It is a one-time use product to ensure the disinfection effect.

[0030] In another implementation scheme, such as Figures 1-7 As shown, a take-up slot 13 is provided on the outer side of the placement cylinder 1, and a cover 4 is installed on the inner side of the take-up slot 13 via a hinge. A handle 5 is fixedly installed on the outer side of the cover 4, and a handle 2 is fixedly installed on the outer side of the placement cylinder 1.

[0031] The retrieval slot 13 facilitates the replacement and removal of the puncture needle 38. When the puncture needle 38 needs to be replaced, simply turn the knob 1 6 in the opposite direction to drain the fluid inside the puncture needle 38, and then turn the knob 2 7 in the opposite direction to reset the ear plate holder 26 carrying the puncture needle 38. In addition, the retrieval slot 13 can be sealed by the cover 4, and the handle 2 makes it easy for medical staff to hold.

[0032] Working principle: In use, first, place the puncture syringe 38 inside the placement cylinder 1, so that the push handle of the puncture syringe 38 is engaged inside the push handle holder 11, and the ear handle of the puncture syringe 38 is engaged inside the ear plate holder 26. Then, align the center of the bottom of the placement cylinder 1 with the patient's required puncture site. Then, turn the knob 7 to rotate the threaded rod 15. Under the limitation of the limiting slider 27 and the limiting groove 14, the moving block 12 can move downward, thereby driving the puncture syringe 38 downward through the ear plate holder 26. This allows the needle tip of the puncture syringe 38 to extend through the bottom of the placement cylinder 1, and the needle tip at the bottom of the puncture syringe 38 gradually passes through the bottom of the placement cylinder 1 and slowly... Inserted into the patient's body, this mechanically driven downward movement structure eliminates the need for medical staff to manually press the puncture syringe 38. Instead, they can precisely adjust the insertion speed and depth of the puncture needle by controlling the rotation of knob 2 7. This effectively reduces the risks of needle deviation and excessive puncture depth caused by improper force control during manual operation, making the insertion process more stable and smooth. It also reduces the workload for medical staff, improving ease of operation. Furthermore, through the set scale indicator 2 37 and the displacement scale inside the placement cylinder 1, medical staff can intuitively and accurately understand the real-time insertion volume of the needle. They can then flexibly adjust the puncture depth according to the patient's age, body type, and condition to meet the personalized puncture needs of different patients. When the bottom of the insert 1 extends, the needle housing is inserted through the needle insertion hole 20 inside the sterile cotton 9. The sterile cotton 9 can disinfect and wipe the needle head of the puncture syringe 38, effectively removing any dust, bacteria, or other contaminants that may remain on the needle head surface. This design of immediate disinfection before puncture avoids the problem of secondary contamination caused by prolonged storage or environmental factors after pre-disinfection of traditional puncture needles. It ensures the asepticity of the needle during insertion into the patient's body from the source, greatly improving the safety of clinical puncture operations and reducing the risk of infection caused by puncture. In addition, the rubber sleeve 8 can be pulled off from the outside of the insert 21, thereby causing the locking ring 18 to disengage from the inside of the annular locking groove 22, allowing the locking cylinder 19 carrying the sterile cotton 9 to exit the cylindrical locking groove. The interior of groove 23 detaches, allowing the disinfectant cotton 9 to be replaced. One person, one use, ensuring disinfection effectiveness. Alternatively, rotating knob 6 rotates transmission wheel 29, which in turn rotates transmission wheel 28 via transmission belt 30. This, in turn, rotates external threaded cylinder 34 via cross inner sleeve rod 17, causing internal threaded ring 36 to move outside external threaded cylinder 34. This, in turn, moves moving block 24 via moving push rod 33, which in turn moves the push handle of puncture syringe 38 upwards via push handle holder 11. This causes the piston of puncture syringe 38 to move within the syringe barrel, drawing fluid from the patient's body through the needle into the syringe barrel, thus draining the fluid. This process also employs a mechanical transmission method.Medical staff can precisely adjust the movement speed of the piston part of the puncture syringe 38 by controlling the rotation speed and number of turns of knob 6, thereby controlling the rate of fluid extraction and avoiding patient discomfort caused by excessively rapid extraction. This improves the convenience and stability of the operation. Furthermore, the scale indicator 37, in conjunction with the liquid level scale inside the placement cylinder 1, allows medical staff to promptly understand the patient's fluid output. The designated pick-and-place slot 13 facilitates the replacement and removal of the puncture syringe 38. When the puncture syringe 38 needs to be replaced, simply reverse knob 6 to drain the fluid inside the syringe 38, then reverse knob 7 to reset the ear plate holder 26 carrying the syringe 38. Additionally, the cover 4 can seal the pick-and-place slot 13, and the handle 2 provides convenient gripping for medical staff.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fluid drainage device for oncology care, comprising a placement cylinder (1) and a puncture needle (38) detachably mounted inside the placement cylinder (1), characterized in that: The placement cylinder (1) is equipped with a drive snap-fit ​​assembly for installing the puncture needle (38) and driving the puncture needle (38), and the drive snap-fit ​​assembly includes a snap-fit ​​assembly and a drive assembly. The bottom of the placement cylinder (1) is equipped with a disinfection assembly for disinfecting the needle head of the puncture needle (38).

2. The fluid drainage device for oncology nursing according to claim 1, characterized in that: The snap-fit ​​assembly includes a push handle seat (11) and an ear plate seat (26). A second movable block (24) is fixedly installed on the outer side of the push handle seat (11). A second limiting slider (25) is fixedly installed on the outer side of the second movable block (24). A first movable block (12) is fixedly installed on the outer side of the ear plate seat (26). A first limiting slider (27) is fixedly installed on the outer side of the first movable block (12). A limiting baffle (31) is fixedly installed on the inner side of the ear plate seat (26).

3. The fluid drainage device for oncology nursing according to claim 2, characterized in that: The drive assembly includes a threaded rod (15) and an external threaded cylinder (34). A knob (7) is fixedly installed on the top of the threaded rod (15). The bottom of the threaded rod (15) is rotatably connected to the bottom of the inner cavity of the placement cylinder (1). A moving block (12) is threadedly connected to the outside of the threaded rod (15). An internal threaded ring (36) is threadedly connected to the outside of the external threaded cylinder (34). Four moving push rods (33) are fixedly installed on the top of the internal threaded ring (36). A circular passage is opened inside the moving block (12). The hole and four movable push rods (33) pass through the circular through hole and are fixedly connected to the bottom of the movable block two (24). The internal of the external threaded cylinder (34) is slidably installed with a cross inner sleeve rod (17). The top of the cross inner sleeve rod (17) is fixedly installed with a transmission wheel one (28). The outer side of the transmission wheel one (28) is sleeved with a transmission belt (30). The inner side of the transmission belt (30) away from the transmission wheel one (28) is sleeved with a transmission wheel two (29). The top of the transmission wheel two (29) is fixedly installed with a knob one (6).

4. A fluid drainage device for oncology nursing according to claim 3, characterized in that: A connecting plate (32) is fixedly installed at the bottom of the movable block (12), and a support block (35) is fixedly installed at the end of the connecting plate (32) away from the movable block (12). The bottom of the external threaded cylinder (34) is rotatably connected to the top of the support block (35).

5. A fluid drainage device for oncology nursing according to claim 4, characterized in that: The placement cylinder (1) has a limiting groove 1 (14) inside, and the limiting slider 1 (27) is slidably installed inside the limiting groove 1 (14). The placement cylinder (1) has a limiting groove 2 (16) inside, and the limiting slider 2 (25) is slidably installed inside the limiting groove 2 (16).

6. A fluid drainage device for oncology nursing according to claim 5, characterized in that: The outer side of the push handle holder (11) is fixedly installed with a scale finger block one (10), and the outer side of the ear plate holder (26) is fixedly installed with a scale finger block two (37). The placement tube (1) is made of transparent plastic, and scale lines are set inside the placement tube (1) at the positions corresponding to scale finger block one (10) and scale finger block two (37).

7. A fluid drainage device for oncology nursing according to claim 6, characterized in that: The disinfection assembly includes an installation cylinder (21) and a rubber sleeve (8). The bottom of the installation cylinder (21) is provided with an annular snap-fit ​​groove (22) and a cylindrical snap-fit ​​groove (23). A snap-fit ​​ring (18) is fixedly installed inside the rubber sleeve (8). A snap-fit ​​cylinder (19) is fixedly installed on the top of the snap-fit ​​ring (18). A disinfection cotton (9) is fixedly installed inside the snap-fit ​​cylinder (19), and a needle insertion hole (20) is provided inside the disinfection cotton (9).

8. A fluid drainage device for oncology nursing according to claim 7, characterized in that: The rubber sleeve (8) is fitted onto the outside of the mounting cylinder (21), the snap ring (18) is snapped into the inside of the annular snap groove (22), the snap cylinder (19) is snapped into the inside of the cylindrical snap groove (23), and a protective cover (3) is fixedly installed at the bottom of the placement cylinder (1), and the protective cover (3) is made of transparent plastic.

9. A fluid drainage device for oncology nursing according to claim 8, characterized in that: The outer side of the placement cylinder (1) is provided with a pick-up and put-down slot (13), and the inner side of the pick-up and put-down slot (13) is fitted with a cover (4) by a hinge. A handle (5) is fixedly installed on the outer side of the cover (4).

10. A fluid drainage device for oncology nursing according to claim 9, characterized in that: A handle (2) is fixedly installed on the outside of the placement tube (1).

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