Drainage device for clinical care

Abstract

The application provides a drainage device for clinical nursing, which comprises an outer cylinder, a piercing cone and an inner cylinder, a fixed disc is fixed in the outer cylinder, an insertion block one is arranged at one end of the fixed disc in a concentric manner, and an insertion groove one is arranged on the piercing cone. A locking assembly and a pushing assembly are arranged in the outer cylinder respectively. When the piercing cone driven and installed on the outer cylinder rotates, the locking assembly can lock the relative position of the insertion block one in the insertion groove one. When back flushing, the piercing cone is continuously driven to rotate, and the pushing assembly can drive the inner cylinder to move away from the piercing cone, so that the control hole and the liquid suction hole are correspondingly communicated, and the cleaning liquid in the inner cylinder is allowed to be discharged outward through the control hole and the liquid suction hole. The application only needs to rotate the piercing cone and cooperate with the use of the locking assembly, so that the disassembly and assembly of the piercing cone on the outer cylinder can be conveniently and efficiently realized, which is stable and reliable. In addition, when back flushing, the piercing cone only needs to be continuously driven to rotate, and the pushing assembly is used to adjust the overlapping communication between the control hole and the liquid suction hole, so as to improve the back flushing efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to drainage devices for clinical nursing. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] When draining fluid from a patient's body, a negative pressure drainage device is usually used. A negative pressure drainage device creates a pressure difference between the pressure inside the drainage device and the pressure at the drainage site, thereby draining the fluid or secretions into the drainage device through the pressure difference.

[0004] The related invention patent with publication number CN114470360B discloses a drainage device for clinical nursing, including an outer cylinder and an inner cylinder movably disposed at the left end of the outer cylinder. The outer wall of the inner cylinder is uniformly provided with control holes, and the outer cylinder is uniformly provided with suction holes corresponding to the control holes. A drainage tube is connected through the center of the right side of the inner cylinder, and the right end of the drainage tube extends to the outside of the outer cylinder and is inserted into the drain pipe. In use, the outer cylinder is first inserted into the fluid accumulation area in the patient's body, and then the negative pressure device is controlled to operate. The operation of the negative pressure device creates negative pressure in the drain pipe, drainage tube, and inner cylinder. Under the action of negative pressure, the inner cylinder will move to the right and compress the first spring. The control holes on the outer wall of the moving inner cylinder will gradually coincide with the suction holes on the outer wall of the outer cylinder. When the two overlap, the fluid accumulation in the patient's body can enter the inner cylinder through the suction holes and control holes, and then be discharged through the drainage tube and drain pipe.

[0005] However, the aforementioned patented technology has the following drawbacks:

[0006] (1) The spike is connected to the outer cylinder by magnetic attraction or adhesive bonding.

[0007] When the needle and the outer cylinder are magnetically connected, although disassembly and assembly are convenient, the connection is not secure, and there is a risk of accidental dislodgement when the needle is inserted into the patient's body for drainage.

[0008] When the needle cone and the outer cylinder are bonded together, although it is strong, it cannot be disassembled, making it inconvenient to change to a needle cone with a corresponding shape according to the actual condition of the patient's affected area, and also inconvenient to replace the needle cone individually when it is damaged.

[0009] (2) During backwashing, the spike must be removed before the rotating rod can be operated to achieve the overlap and connection between the control hole and the suction hole. This is inconvenient, time-consuming and labor-intensive. Summary of the Invention

[0010] The main objective of this invention is to provide a drainage device for clinical care.

[0011] To achieve the above objectives, the technical solution of the present invention is as follows: a drainage device for clinical nursing includes an outer cylinder, one end of which is detachably provided with a piercing cone that can rotate relative to its circumference, and an aspiration hole for aspirating fluid to be drawn from the patient’s body is provided on the outer wall of the outer cylinder near the piercing cone.

[0012] An inner cylinder is provided axially movable at one end of the outer cylinder near the spike, and a control hole that is misaligned with the liquid suction hole is provided on the inner cylinder;

[0013] During drainage, the inner cylinder can be drawn away from the spike by negative pressure, so that the control hole and the suction hole are connected, allowing the accumulated liquid to enter the inner cylinder and be discharged in a directional manner under negative pressure.

[0014] A fixed plate is fixed inside the outer cylinder. A first insert is concentrically arranged on the end of the fixed plate facing the spike. A slot is opened on the spike for the first insert to be inserted and rotate synchronously with the spike.

[0015] The outer cylinder is equipped with a locking component and a propulsion component;

[0016] When the drive pin mounted on the outer cylinder rotates, the locking assembly can lock the relative position of the insert block one in the slot one;

[0017] During backwashing, the spiked cone continues to rotate, and the propulsion assembly drives the inner cylinder to move away from the spiked cone, so that the control hole and the suction hole are connected, allowing the cleaning fluid transported to the inner cylinder in the reverse direction to be discharged outward through the control hole and the suction hole.

[0018] Furthermore, the locking assembly includes a second locking block and a first transmission assembly. The first locking block is cylindrical and rotatably mounted on the fixed plate. The second locking block is radially inserted into the outer wall of the first locking block. The first slot has a second locking groove that mates with the second locking block. The first transmission assembly is located inside the first locking block. When the first locking block is inserted into the first slot and the spike is rotated, the first transmission assembly can drive the centrifugal end of the second locking block to engage in the second locking groove.

[0019] Furthermore, the transmission assembly includes a push rod slidably inserted into the center of the fixed plate, a plug block set on the outside of the push rod, the push rod being able to move axially relative to the plug block and the fixed plate, the inner side wall of the plug block being axially provided with a spiral groove, and the outer wall of the push rod being provided with a protrusion that slides with the groove; the centripetal end of the locking block has a ramp that presses against the end of the push rod near the spike.

[0020] Furthermore, the first insert has a radially formed receiving groove for accommodating the second insert, a fixed plate is fixed in the receiving groove, the second insert slides through the fixed plate and a washer is fixed on the outside, and a spring is sleeved on the outside of the second insert, with the two ends of the spring connected to the outer wall of the washer and the outer wall of the fixed plate, respectively.

[0021] Furthermore, the inner side of the insert block is provided with a relief groove that slides with the protrusion. One end of the relief groove is connected to the end of the groove near the spike, and the other end extends along the circumference of the insert block.

[0022] Furthermore, the propulsion assembly includes a moving disk and a transmission assembly two. The moving disk is concentrically mounted on the fixed disk and sleeved on the outside of the insertion block one, and can rotate relative to the insertion block one.

[0023] A stop block is fixed on the outer side of the insert block, and a relief groove 2 that extends circumferentially and slides with the stop block is opened on the side of the moving disc near the spike.

[0024] When the rotating spike completes the locking of the insertion block one in the slot one, the protrusion one is located at the junction of the relief groove one and the groove one, and the stop block in the relief groove two has moved from one end of the groove to contact the other end of the groove so as to drive the moving disc to rotate synchronously.

[0025] A push plate is provided between the fixed plate and the inner cylinder, and the transmission component two is located in the outer cylinder. When the backwashing continues to rotate the spike, the transmission component two is used to drive the push plate to push the inner cylinder away from the spike, so that the control hole and the suction hole are connected.

[0026] Furthermore, the transmission assembly two includes a limiting rod one, a limiting groove one extending in a centripetal bend on the moving plate, and a limiting groove two extending radially on the fixed plate. The limiting rod one slides through the limiting groove one and the limiting groove two. The end of the limiting rod one near the inner cylinder is vertically fixed with a connecting rod extending in a centripetal direction. The push plate is elastically disposed on the fixed plate. The side of the push plate near the spike is fixed with an inclined block that slides and presses against the free end of the connecting rod.

[0027] Furthermore, the centrifugal end of the stop block is elastically provided with a second insert block, and a second slot is provided on the wall of the clearance groove near the other end of the groove body for inserting the second insert block. The side wall of the slot second has an inclined surface that cooperates with the second insert block.

[0028] The moving plate has a circumferentially extending limiting hole, and the fixed plate has a limiting rod that slides with the limiting hole.

[0029] When the rotating spike completes the locking of the insertion block one in the slot one, the stop block in the clearance groove two has moved from one end of the groove to contact the other end of the groove so as to drive the moving plate to rotate synchronously, while the limiting rod two is located at one end in the limiting hole.

[0030] As the spike continues to rotate, the first insert block drives the moving disc to rotate synchronously, while the second limiting rod gradually approaches the opposite end of the limiting hole.

[0031] Furthermore, a telescopic rod is provided between the push plate and the fixed plate, and a second spring is sleeved on the outside of the telescopic rod;

[0032] The centrifugal end of the stop block is provided with a block placement groove for inserting the second insert block, and a third spring is provided between the second insert block and the block placement groove;

[0033] The fixed plate has a track block, and the moving plate has a track groove that mates with the track block in a circumferential direction.

[0034] A locking block is fixed on the outer wall of the insert block, and a slot is provided in the slot of the slot to cooperate with the locking block;

[0035] A limiting plate is fixed inside the outer cylinder, and a drain pipe coaxial with the outer cylinder is fixed through the limiting plate. One end of the drain pipe is connected to the inner cylinder, and the inner cylinder can move axially relative to the drain pipe. A fourth spring is sleeved on the outside of the drain pipe, and the two ends of the fourth spring are respectively connected to the outer wall of the inner cylinder and the outer wall of the limiting plate.

[0036] Furthermore, a ring of docking blocks is arranged circumferentially around the side of the spike facing the outer cylinder. A docking groove is opened on the outer cylinder for the docking blocks to be rotatably inserted. A rod hole is opened radially on the outer cylinder, and a positioning rod is inserted into the rod hole. Two positioning holes that cooperate with the positioning rod are opened on the outer periphery of the docking block. A plate groove is opened on the outer wall of the outer cylinder to connect the centrifugal end of the rod hole. A cover plate that is flush with the outer periphery surface of the outer cylinder is placed in the plate groove.

[0037] The beneficial effects of this invention are reflected in:

[0038] The drainage device for clinical care of the present invention allows for convenient and efficient installation and removal of the needle on the outer cylinder by simply rotating the needle and using the locking component when the needle is inserted on the outer cylinder. It is stable and reliable. In addition, during backwashing, it is only necessary to continue driving the tap to rotate and use the propulsion component to quickly adjust the overlap and connection between the control hole and the suction hole, thereby improving the backwashing efficiency. Attached Figure Description

[0039] In the attached diagram:

[0040] Figure 1 This is a partial three-dimensional structural schematic diagram of the drainage device of the present invention;

[0041] Figure 2 for Figure 1 A partial cross-sectional view of the middle tap in a locked position after initial rotation on the outer cylinder;

[0042] Figure 3 for Figure 1 A schematic diagram of the inner and outer cylinders in their non-installed state;

[0043] Figure 4 for Figure 1 Schematic diagram of the structure of the central piercing cone;

[0044] Figure 5 for Figure 2 A schematic diagram of the structure of the central plate;

[0045] Figure 6 for Figure 2 A partial cross-sectional view of the tap in a non-positionally locked state on the outer cylinder;

[0046] Figure 7 for Figure 6 Enlarged structural diagram at point A;

[0047] Figure 8 for Figure 6 A schematic diagram of the structure when the middle stop block is located at one end of the second clearance groove;

[0048] Figure 9 for Figure 2 A partial cross-sectional view of the tap in a locked position on the outer cylinder;

[0049] Figure 10 for Figure 9 Enlarged structural diagram at point B;

[0050] Figure 11 for Figure 9 Enlarged structural diagram at point C;

[0051] Figure 12 for Figure 9 A schematic diagram of the structure when the middle stop block is located at the other end of the second clearance groove;

[0052] Figure 13 for Figure 12 Enlarged structural diagram at point D;

[0053] Figure 14 for Figure 2 A partial cross-sectional view of the structure when the tap is locked on the outer cylinder and the push plate drives the inner cylinder to move so that the control hole and the washing liquid hole coincide and connect.

[0054] Figure 15 for Figure 14 A schematic diagram of the structure when the middle stop block squeezes the groove wall at the other end of the second clearance groove to drive the moving disc to rotate synchronously;

[0055] Figure 16 for Figure 6 A partial structural diagram showing the distribution of the grooves and clearance grooves after the middle cylinder is unfolded.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1. Outer cylinder; 2. Spike; 3. Suction hole; 4. Inner cylinder; 5. Drain pipe; 6. Control hole; 7. Insert block one; 8. Slot one; 9. Locking block one; 10. Locking groove one; 11. Locking block two; 12. Locking groove two; 13. Fixed plate; 14. Push rod; 15. Groove one; 16. Protrusion one; 17. Receiving groove; 18. Fixed plate; 19. Washer ring; 20. Stop block; 21. Clearance groove two; 22. Limiting groove one; 23. Limiting groove 24. Limiting rod 1; 25. Connecting rod; 26. Inclined block; 27. Push plate; 28. Telescopic rod; 29. ​​Insert block 2; 30. Slot 2; 31. Moving plate; 32. Limiting rod 2; 33. Limiting hole; 34. Clearance groove 1; 35. Track block; 36. Track groove; 37. Connecting groove; 38. Connecting block; 39. Rod hole; 40. Positioning rod; 41. Positioning hole; 42. Plate groove; 43. Cover plate; 44. Limiting plate. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0059] Please combine Figures 1 to 16 .

[0060] A drainage device for clinical nursing includes an outer cylinder 1, one end of which is provided with a piercing cone 2 that can rotate relative to it in the circumferential direction, and an aspiration hole 3 that can aspirate the fluid accumulated in the patient's body is opened on the outer wall of the outer cylinder 1 near the piercing cone 2.

[0061] An inner cylinder 4 is axially movable at one end of the outer cylinder 1 near the spike 2, and a control hole 6 is provided on the inner cylinder 4 that is misaligned with the liquid suction hole 3.

[0062] During drainage, the inner cylinder 4 can be drawn away from the spike 2 by negative pressure, so that the control hole 6 and the suction hole 3 are connected, allowing the accumulated liquid to enter the inner cylinder 4 and be discharged in a directional manner under negative pressure.

[0063] A fixed plate 13 is fixed inside the outer cylinder 1. A plug 7 is concentrically arranged on one end of the fixed plate 13 facing the spike 2. A slot 8 is opened on the spike 2 for the plug 7 to be inserted and rotate synchronously with the spike 2.

[0064] The outer cylinder 1 is equipped with a locking component and a propulsion component.

[0065] When the drive pin 2 mounted on the outer cylinder 1 rotates, the locking assembly can lock the relative position of the insert block 7 in the slot 8.

[0066] During backwashing, the spike 2 continues to rotate, and the propulsion assembly can drive the inner cylinder 4 to move away from the spike 2, so that the control hole 6 and the suction hole 3 are connected, allowing the cleaning fluid transported to the inner cylinder 4 in the reverse direction to be discharged outward through the control hole 6 and the suction hole 3.

[0067] In a specific embodiment, before drainage, the insert block 7 at the front end of the outer cylinder 1 is inserted into the slot 8 of the spike 2. The spike 2 is initially rotated in conjunction with the locking component to lock the insert block 7 in the slot 8, thereby realizing the installation of the spike 2 on the outer cylinder 1.

[0068] During drainage, the needle 2 along with the outer tube is first inserted into the patient's effusion site. By applying negative pressure to the inner tube 4, the inner tube 4 is moved away from the needle 2, so that the control hole 6 and the suction hole 3 are connected. This allows the effusion in the patient's body to enter the inner tube 4 through the suction hole 3 and the control hole 6 under negative pressure and be discharged out of the body.

[0069] When backflushing is required after drainage, continue to rotate the spike 2 and use the propulsion component to connect the control hole 6 with the suction hole 3, and reversely convey the cleaning fluid into the inner cylinder 4. The cleaning fluid conveyed to the inner cylinder 4 in reverse is discharged outward through the control hole 6 and the suction hole 3 to remove dirt, thus quickly completing the cleaning of this device.

[0070] It should be noted that a suction pump can be installed at the end of the outer cylinder 1 before drainage to provide negative pressure suction for the inner cylinder 4 during drainage, and to serve as the driving force for the axial movement of the inner cylinder 4 in the outer cylinder 1 during drainage. During cleaning and maintenance, a cleaning pipe can be connected to the end of the outer cylinder 1 to deliver cleaning solution to the inner cylinder 4 for reverse rinsing cleaning.

[0071] In addition, the shape of the piercing cone 2 can be set as needed; it can be set to be flat-headed or pointed-headed so that it can be inserted into the drainage site.

[0072] In one embodiment, the locking assembly includes a second locking block 11 and a first transmission assembly. The first insertion block 7 is cylindrical and rotatably mounted on the surface of the fixed plate 13. The second locking block 11 is radially inserted into the outer wall of the first insertion block 7. The slot 8 has a slot 12 that mates with the second locking block 11. The first transmission assembly is located inside the first insertion block 7. When the first insertion block 7 is driven to insert into the slot 8 and the spike 2 is rotated, the first transmission assembly can drive the centrifugal end of the second locking block 11 to engage in the slot 12.

[0073] Thus, when the insert block 7 at the front end of the outer cylinder 1 is inserted into the slot 8 of the spike 2, the spike 2 and the insert block 7 rotate synchronously. At this time, rotating the spike 2 drives the insert block 7 to rotate synchronously. With the use of the transmission component 1, the centrifugal end of the locking block 11 is locked into the slot 12, thus completing the locking of the position of the insert block 7 in the slot 8.

[0074] In one embodiment, the transmission assembly includes a push rod 14 slidably inserted into the center of the fixed plate 13. The push rod 14 has a rectangular longitudinal section, and the fixed plate 13 has a sliding hole (not shown) for the push rod 14 to be slidably inserted into the center.

[0075] Insert block 7 is fitted onto the outside of push rod 14. Push rod 14 can move axially relative to insert block 7 and fixed plate 13. Insert block 7 has a spiral groove 15 axially formed on its inner sidewall. Push rod 14 has a protrusion 16 that slides with groove 15 on its outer wall. Locking block 11 has a ramp (not shown) at its radial end that presses against the end of push rod 14 near spike 2.

[0076] Thus, when the insert block 7 at the front end of the outer cylinder 1 is inserted into the slot 8 of the spike 2, the spike 2 initially drives the insert block 7 to rotate. This causes the groove wall of the axially extending groove 15 inside the insert block 7 to continuously rub and squeeze the protrusion 16, forcing the push rod 14 to move toward and squeeze the slope of the centrifugal end of the locking block 11, so that the centrifugal end of the locking block 11 is locked into the slot 12, thus completing the locking of the insert block 7 in the slot 8.

[0077] In one embodiment, the insert block 7 is radially provided with a receiving groove 17 for accommodating the second locking block 11. A fixed plate 18 is fixed in the receiving groove 17. The second locking block 11 slides through the fixed plate 18 and is fixed with a washer 19 on its outer side. A spring 1 (not shown) is sleeved on the outer side of the second locking block 11. The two ends of the spring 1 are respectively connected to the outer wall of the washer 19 and the outer wall of the fixed plate 18.

[0078] It should be noted that when the centripetal end of the second locking block 11 does not contact the push rod 14, the second locking block 11 is completely contained in the receiving groove 17, and the first spring is in a non-deformed state. When the push rod 14 presses against the ramp, the centrifugal ends of the second locking block 11 and the washer ring 19 move, and the first spring is gradually compressed. The compression of the first spring can help the second locking block 11 to move centripetally back to be contained in the receiving groove 17 when the push rod 14 is subsequently disengaged from the second locking block 11.

[0079] In one embodiment, the inner side of the insert block 7 is provided with a relief groove 34 that slides with the protrusion 16. One end of the relief groove 34 is connected to the end of the groove 15 near the spike 2, and the other end extends along the circumference of the insert block 7.

[0080] The propulsion assembly includes a moving disk 31 and a transmission assembly 2. The moving disk 31 is concentrically mounted on the fixed disk 13 and sleeved on the outside of the insertion block 7, and can rotate relative to the insertion block 7.

[0081] A stop block 20 is fixed on the outer side of the insert block 7, and a relief groove 21 extending circumferentially and slidingly engaging with the stop block 20 is provided on the side of the moving disc 31 near the spike 2.

[0082] When the rotating spike 2 completes the locking of the insertion block 7 in the slot 8, the protrusion 16 is located at the junction of the relief groove 34 and the recess 15, and the stop block 20 in the relief groove 21 has moved from one end of the groove to contact the other end of the groove so as to drive the rotating disk 31 to rotate synchronously.

[0083] A push plate 27 is provided between the fixed plate 13 and the inner cylinder 4. The transmission component 2 is provided in the outer cylinder 1. When the backwashing continues to rotate the spike 2, the transmission component 2 is used to drive the push plate 27 to push the inner cylinder 4 away from the spike 2, so that the control hole 6 and the suction hole 3 are connected.

[0084] Thus, when the spike 2 is inserted into the outer cylinder 1 and not rotated, the stop block 20 is located at one end of the clearance groove 21. When the spike 2 is initially rotated to complete its installation on the outer cylinder 1, the stop block 20 has moved from one end of the clearance groove 21 to contact the other end of the groove. When the spike 2 continues to rotate, the spike 2 drives the insert block 7 to rotate synchronously. The insert block 7 rotates relative to the top rod 14. Due to the existence of the circumferentially extended clearance groove 34, the protrusion 16 will move in the clearance groove 34. The rotation of the insert block 7 will not drive the top rod 14 to continue to move axially. However, the insert block 7 can drive the rotating disc 31 to rotate through the stop block 20. With the use of the transmission component 2, the push plate 27 is driven to push the inner cylinder 4 away from the spike 2, so that the control hole 6 and the suction hole 3 are connected to each other, so as to carry out subsequent backwashing cleaning operations.

[0085] In one embodiment, the transmission assembly 2 includes a limiting rod 24, a limiting groove 22 extending radially in a curved manner on the moving plate 31, and a limiting groove 23 extending radially on the fixed plate 13. The limiting rod 24 slides through the limiting groove 22 and the limiting groove 23. The end of the limiting rod 24 near the inner cylinder 4 is vertically fixed with a connecting rod 25 extending radially. The push plate 27 is elastically disposed on the fixed plate 13. The push plate 27 near the spike 2 is fixed with an inclined block 26 that slides and presses against the free end of the connecting rod 25.

[0086] Thus, the rotation of the moving plate 31 causes the limiting groove 22 to rub and squeeze the limiting rod 24. Under the combined limiting action of the limiting groove 23, the limiting rod 24 drives the connecting rod 25 to move radially inward, so that the inward end of the connecting rod 25 (free end) slides and squeezes the inclined block 26, forcing the push plate 27 to push the inner cylinder 4 to move, so that the control hole 6 and the suction hole 3 are connected to each other, so that the backwash cleaning operation can be carried out in the future (during which the protrusion 16 will move to the end of the avoidance groove 34 away from the groove 15).

[0087] In one embodiment, the centrifugal end of the stop block 20 is elastically provided with a second insert block 29, and a second slot 30 for inserting the second insert block 29 is provided on the groove wall near the other end of the groove body in the second clearance groove 21. The groove side wall of the second slot 30 has an inclined surface (not shown) that cooperates with the second insert block 29.

[0088] The moving plate 31 has a circumferentially extending limiting hole 33, and the fixed plate 13 has a limiting rod 32 that slides with the limiting hole 33.

[0089] Thus, when the rotating spike 2 completes the locking of the insertion block 7 in the slot 8, the stop block 20 in the clearance groove 21 has moved from one end of the groove to contact the other end of the groove, so as to drive the moving disc 31 to rotate synchronously, while the limiting rod 32 is located at one end of the limiting hole 33.

[0090] As the spike 2 continues to rotate, the insert block 7 drives the moving disc 31 to rotate synchronously. The rotation of the moving disc 31 will cause the limiting rod 32 to gradually approach the opposite end of the limiting hole 33.

[0091] Conversely, when the cleaning is completed and it is necessary to restore the sealed state of the device, that is, when it is necessary to release the driving pressure of the push plate 27 on the inner cylinder 4, the spike 2 drives the insert block 7 to rotate in the opposite direction. Due to the insertion and cooperation of the insert block 29 and the slot 20, the insert block 7 can drive the moving plate 31 to rotate in the opposite direction synchronously. Under the combined limiting action of the limiting groove 22 and the limiting groove 23, the limiting rod 24 drives the connecting rod 25 to move centrifugally, releasing the pressure of the connecting rod 25 on the inclined block 26, thereby releasing the pressure of the push plate 27 on the inner cylinder 4. The inner cylinder 4 can return to the initial position, so that the control hole 6 and the liquid suction hole 3 are misaligned, restoring the sealed state of the drainage device.

[0092] It should be noted that during the reverse rotation of the moving plate 31 driven by the stop block 20, due to the existence of the relief groove 34, the reverse rotation of the insert block 7 will cause the protrusion 16 to move to the junction of the relief groove 34 and the groove 15. At this time, the hole wall at one end of the upper limit hole 33 of the moving plate 31 just touches the limit rod 32 on the fixed plate 13, and the push plate 27 disengages from the inner cylinder 4.

[0093] If it is necessary to release the position lock between the insert block 7 and the slot 8, the insert block 7 needs to be rotated in the opposite direction by the spike 2. Since the limiting hole 33 prevents the moving plate 31 from continuing to follow the insert block 7 through its side hole wall, the insert block 7 will be driven by the driving force to cause the insert block 29 on it to retract into the block slot (compressed by the third spring) under the sliding guide of the inclined surface of the slot 20, and disengage from the slot 20, thus releasing the motion synchronization between the insert block 7 and the moving plate 31. This allows the insert block 7 to drive the stop block 20 to move in the opposite direction to the initial end (the protrusion 16 moves in the opposite direction to the end of the groove 15 away from the clearance groove 34), thus causing the push rod 14 to disengage from the locking block 21. The locking block 21 will disengage from the locking slot 22 under the corresponding spring return action, thus releasing the position lock between the insert block 7 and the slot 8. Then the spike 2 can be removed from the front end of the outer cylinder 1.

[0094] In one embodiment, a telescopic rod 28 is provided between the push plate 27 and the fixed plate 13, and a second spring (not shown) is sleeved on the outside of the telescopic rod 28.

[0095] Thus, when the push plate 27 is driven by the connecting rod 25 to press the inner cylinder 4, the telescopic rod 28 and the second spring will stretch. When the connecting rod 25 moves centrifugally away from the inclined block 26, the elastic force of the second spring can restore the push plate 27 to the inner cylinder 4.

[0096] In one embodiment, the centrifugal end of the stop block 20 is provided with a block placement groove for inserting the second insert block 29, and a third spring is provided between the second insert block 29 and the block placement groove.

[0097] Thus, when the second insert 29 is inserted into the second slot 30, the third spring is in a non-deformed state; when the second insert 29 is housed in the slot, the third spring is compressed and deformed.

[0098] In one embodiment, a track block 35 is fixed on the fixed plate 13, and a track groove 36 that mates with the track block 35 is circumferentially opened on the moving plate 31.

[0099] Thus, by using the track block 35 in conjunction with the track groove 36, the moving plate 31 can rotate circumferentially on the fixed plate 13.

[0100] In one embodiment, a locking block 9 is fixed on the outer wall of the insert block 7, and a slot 10 that mates with the locking block 9 is provided in the slot of the slot 8.

[0101] Thus, when the insert block 7 is inserted into the slot 8, the card block 9 can be simultaneously inserted into the slot 10, which not only facilitates quick positioning when the spike 2 and the insert block 7 are docked, but also allows the spike 2 and the insert block 7 to form a synchronous rotating whole.

[0102] In one embodiment, a limiting plate 44 is fixed inside the outer cylinder 1, and a drain pipe 5 coaxial with the outer cylinder 1 is fixed through the limiting plate 44. One end of the drain pipe 5 is connected to the inner cylinder 4, and the inner cylinder 4 can move axially relative to the drain pipe 5. The drain pipe 5 and the inner cylinder 4 are slidably sealed together. A fourth spring is sleeved on the outside of the drain pipe 5, and the two ends of the fourth spring are respectively connected to the outer wall of the inner cylinder 4 and the outer wall of the limiting plate 44.

[0103] Thus, when the inner cylinder 4 is squeezed and moves away from the spike 2, causing the control hole 6 to connect with the suction hole 3, it will squeeze the fourth spring. When the inner cylinder 4 is not squeezed, the fourth spring can help the inner cylinder 4 move back to the initial position, causing the control hole 6 and the suction hole 3 to be misaligned.

[0104] In one embodiment, a ring of docking blocks 38 is circumferentially arranged around the side of the spike 2 facing the outer cylinder 1. The outer cylinder 1 has a docking groove 37 for the docking blocks 38 to be rotatably inserted. A rod hole 39 is radially opened on the outer cylinder 1, and a positioning rod 40 is inserted into the rod hole 39. Two positioning holes 41 that mate with the positioning rod 40 are opened on the outer periphery of the docking blocks 38. A plate groove 42 communicating with the centrifugal end of the rod hole 39 is opened on the outer wall of the outer cylinder 1. A cover plate 43 that is flush with the outer periphery surface of the outer cylinder 1 is placed in the plate groove 42.

[0105] An opening is provided on the outer wall of the outer cylinder 1 located on the side of the plate groove 42 away from the spike 2, so that the operator can take out the cover plate 43 from the plate groove 42.

[0106] It should be noted that the two positioning holes 41 on the outer peripheral sidewall of the docking block 38 correspond to the locking position after the spike 2 rotates and the position during backwashing after continued rotation, respectively, so as to lock the rotation position of the spike 2 after it is locked on the outer cylinder 1, ensuring the stability of the spike 2 during drainage, and facilitating the locking of the current rotation position of the spike 2 during backwashing cleaning, ensuring that the control hole 6 can always be connected to the suction hole 3 during backwashing.

[0107] Thus, the docking block 38 and docking groove 37 facilitate the docking and installation of the spike 2 and the outer cylinder 1. In addition, the locking fit between the positioning rod 40 and the positioning hole 41 ensures the stable installation of the spike 2 during drainage and the stable connection between the control hole 6 and the suction hole 3 during backwashing. The cover plate 43 not only protects the positioning rod 40, but also is flush with the surface of the outer cylinder 1, ensuring the smoothness of the outer cylinder 1 when it enters the human body and preventing the plate groove 42 and the rod hole 39 from scratching the skin tissue.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0109] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0110] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A drainage device for clinical nursing, characterized in that, Includes an outer cylinder (1), one end of which is detachably provided with a piercing cone (2) that can rotate relative to its circumference, and an aspiration hole (3) that can aspirate the fluid accumulated in the patient's body is provided on the outer wall of the outer cylinder (1) near the piercing cone (2). An inner cylinder (4) is provided axially within the outer cylinder (1) near the end of the spike (2), and a control hole (6) is provided on the inner cylinder (4) that is misaligned with the liquid suction hole (3); During drainage, the inner cylinder (4) can be attracted by negative pressure and moved away from the spike (2), so that the control hole (6) and the suction hole (3) are connected, allowing the accumulated liquid to enter the inner cylinder (4) and be discharged in a directional manner under negative pressure. A fixed plate (13) is fixed inside the outer cylinder (1). A first insert block (7) is concentrically arranged on one end of the fixed plate (13) facing the spike (2). A slot (8) is opened on the spike (2) for inserting the first insert block (7) and rotating synchronously with the spike (2). A locking assembly and a propulsion assembly are respectively installed inside the outer cylinder (1); When the drive pin (2) mounted on the outer cylinder (1) rotates, the locking assembly can lock the relative position of the insert (7) in the slot (8); During backwashing, the spike (2) continues to rotate, and the propulsion assembly can drive the inner cylinder (4) to move away from the spike (2), so that the control hole (6) and the suction hole (3) are connected, allowing the cleaning fluid transported to the inner cylinder (4) in reverse to be discharged outward through the control hole (6) and the suction hole (3); The locking assembly includes a second locking block (11) and a first transmission assembly. The first insertion block (7) is cylindrical and rotatably mounted on the surface of the fixed plate (13). The second locking block (11) is radially inserted into the outer wall of the first insertion block (7). The first slot (8) has a second locking groove (12) that mates with the second locking block (11). The first transmission assembly is located inside the first insertion block (7). When the first insertion block (7) is driven to insert into the first slot (8) and the spike (2) is rotated, the first transmission assembly can drive the centrifugal end of the second locking block (11) to engage in the second locking groove (12). The transmission assembly includes a push rod (14) slidably inserted into the center of the fixed plate (13), a plug block (7) sleeved on the outside of the push rod (14), the push rod (14) being able to move axially relative to the plug block (7) and the fixed plate (13), the inner side wall of the plug block (7) being axially provided with a spiral groove (15), and the outer wall of the push rod (14) being provided with a protrusion (16) that slides with the groove (15); the center end of the locking block (11) has a ramp that presses against the end of the push rod (14) near the spike (2); The inner side of the insert block (7) is provided with a relief groove (34) that slides with the protrusion (16). One end of the relief groove (34) is connected to the end of the groove (15) near the spike (2), and the other end extends along the circumference of the insert block (7). The propulsion assembly includes a moving disk (31) and a transmission assembly 2. The moving disk (31) is concentrically mounted on the fixed disk (13) and sleeved on the outside of the first insertion block (7), and can rotate relative to the first insertion block (7). A stop block (20) is fixed on the outside of the insert block (7), and a relief groove (21) that extends circumferentially and slides with the stop block (20) is opened on the side of the moving plate (31) near the spike (2); When the rotating spike (2) completes the locking of the position of the insert block (7) in the slot (8), the protrusion (16) is located at the junction of the relief groove (34) and the groove (15), and the stop block (20) in the relief groove (21) has moved from one end of the groove to contact the other end of the groove so as to drive the moving disc (31) to rotate synchronously. A push plate (27) is provided between the fixed plate (13) and the inner cylinder (4). The transmission component 2 is provided in the outer cylinder (1). When the backwashing continues to rotate the spike (2), the transmission component 2 is used to drive the push plate (27) to push the inner cylinder (4) away from the spike (2), so that the control hole (6) and the suction hole (3) are connected.

2. The drainage device for clinical nursing as described in claim 1, characterized in that, The insert block 1 (7) has a radially opened receiving groove (17) for accommodating the card block 2 (11). A fixed plate (18) is fixed in the receiving groove (17). The card block 2 (11) slides through the fixed plate (18) and is fixed with a washer (19) on its outer side. A spring 1 is sleeved on the outer side of the card block 2 (11). The two ends of the spring 1 are respectively connected to the outer wall of the washer (19) and the outer wall of the fixed plate (18).

3. The drainage device for clinical nursing as described in claim 2, characterized in that, The transmission assembly 2 includes a limiting rod 1 (24), a limiting groove 1 (22) extending in a centripetal bend on the moving plate (31), a limiting groove 2 (23) extending radially on the fixed plate (13), the limiting rod 1 (24) slidingly passing through the limiting groove 1 (22) and the limiting groove 2 (23), the end of the limiting rod 1 (24) near the inner cylinder (4) is vertically fixed with a connecting rod (25) extending in a centripetal direction, the push plate (27) is elastically set on the fixed plate (13), and the push plate (27) near the spike (2) is fixed with an inclined block (26) that slides and presses against the free end of the connecting rod (25).

4. The drainage device for clinical nursing as described in claim 3, characterized in that, The centrifugal end of the stop block (20) is elastically provided with the second insert block (29). The second clearance groove (21) is provided with a slot two (30) for inserting the second insert block (29) on the groove wall near the other end of its groove body. The side wall of the slot two (30) has an inclined surface that cooperates with the second insert block (29). The moving plate (31) has a circumferentially extending limiting hole (33), and the fixed plate (13) has a limiting rod (32) that slides with the limiting hole (33); When the rotating spike (2) completes the locking of the position of the insert block (7) in the slot (8), the stop block (20) in the relief slot (21) has moved from one end of the slot to contact the other end of the slot so as to drive the moving plate (31) to rotate synchronously, while the limiting rod (32) is located at one end of the limiting hole (33). As the spike (2) continues to rotate, the first insert (7) drives the moving disc (31) to rotate synchronously, while the second limiting rod (32) gradually approaches the opposite end of the limiting hole (33).

5. The drainage device for clinical care as described in claim 4, characterized in that, A telescopic rod (28) is provided between the push plate (27) and the fixed plate (13), and a second spring is sleeved on the outside of the telescopic rod (28); The centrifugal end of the stop block (20) is provided with a block placement groove for inserting the second insert block (29), and a third spring is provided between the second insert block (29) and the block placement groove; The fixed plate (13) has a track block (35) fixed on it, and the moving plate (31) has a track groove (36) that mates with the track block (35) around it in the circumferential direction; A locking block (9) is fixed on the outer wall of the insert block (7), and a slot (8) is provided with a locking slot (10) that mates with the locking block (9); A limiting plate (44) is fixed inside the outer cylinder (1). A drain pipe (5) coaxial with the outer cylinder (1) is fixed through the limiting plate (44). One end of the drain pipe (5) is connected to the inner cylinder (4). The inner cylinder (4) can move axially relative to the drain pipe (5). A fourth spring is sleeved on the outside of the drain pipe (5). The two ends of the fourth spring are respectively connected to the outer wall of the inner cylinder (4) and the outer wall of the limiting plate (44).

6. The drainage device for clinical care as described in claim 1, characterized in that, A ring of docking blocks (38) is arranged around the side of the spike (2) facing the outer cylinder (1). The outer cylinder (1) has a docking groove (37) for the docking blocks (38) to be inserted and rotated. A rod hole (39) is opened radially on the outer cylinder (1). A positioning rod (40) is inserted into the rod hole (39). Two positioning holes (41) that cooperate with the positioning rod (40) are opened on the outer periphery of the docking block (38). A plate groove (42) connecting the centrifugal end of the rod hole (39) is opened on the outer wall of the outer cylinder (1). A cover plate (43) that is flush with the outer periphery of the outer cylinder (1) is placed in the plate groove (42).

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