Surgical pleural effusion suction device

Abstract

The invention discloses a pleural effusion suction device for the surgery department, and belongs to the technical field of pleural effusion suction, the pleural effusion suction device comprises a main body module and a feedback module, the main body module comprises a needle cylinder, a piston is arranged in the needle cylinder, and a damping ring making contact with the inner wall of the needle cylinder is arranged on the outer surface of the piston; through arrangement of a mounting rod, a right trapezoid groove, a sleeving rod, a force limiting assembly, a control assembly, a limiting assembly and a tension spring, integrated mechanical control over the liquid pumping force and the blocking state is formed, a damping ring limits the moving speed, the tension spring cannot pull a piston during blocking, the force limiting assembly is lifted to abut against the inner wall of a needle cylinder, and the control assembly cannot be pressed downwards; excessive force application is mechanically limited, explosive liquid extraction caused by needle shaking and displacement, tissue damage and blockage falling is avoided, meanwhile, the blockage state is clearly fed back through pressing of the control assembly, the potential safety hazard that in the prior art, manual experience is relied on is avoided, and the liquid extraction safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pleural effusion suction, in particular to a surgical pleural effusion suction device. BACKGROUND

[0002] In surgical clinical diagnosis and treatment, puncture and suction are common minimally invasive operation techniques, which are widely used in the drainage and pathological detection of body cavity effusion such as thoracic cavity and abdominal cavity. The puncture treatment of pleural effusion is particularly crucial. If pleural effusion is not drained in time, it may compress the lung tissue and affect the respiratory function. In severe cases, it may cause infection or respiratory failure. Before the operation, the physician needs to assist in evaluating the patient's coagulation function, cardiopulmonary function, and checking the skin integrity of the puncture site to exclude infection, scar and other contraindications. At the same time, through health education, the fear of puncture of the patient is alleviated, and the patient is guided to cooperate to maintain a stable body position. During the operation, the patient's heart rate, respiration, blood oxygen saturation and facial color change need to be monitored in real time to identify sudden risks such as pneumothorax and pleural reaction in time. After the operation, the puncture point needs to be pressed to stop bleeding, and the bleeding and effusion of the puncture point need to be observed, and the changes of the patient's chest discomfort symptoms need to be recorded. These nursing links directly affect the operation safety and patient tolerance. At present, for a small amount of pleural effusion, the main method is still to use a syringe for puncture and extraction. This method has the advantages of convenient operation, low equipment requirement and small trauma, which can quickly relieve the patient's symptoms. However, the existing structure design of the liquid suction syringe has significant technical shortcomings, which cannot meet the clinical needs of safe and accurate liquid extraction.

[0003] When the existing syringe is used to extract pleural effusion, the structure of the liquid suction syringe is simple, and there is no integrated mechanical control mechanism for liquid suction blockage. When the needle is completely blocked by fibrous proteins, cell debris and other substances in the effusion, there is no force constraint or blockage feedback. The medical staff is easy to misjudge as the effusion is viscous and continuously increase the pulling force. Since it is a manual operation, excessive pulling force will cause the needle to easily shake and shift to pierce into the lung tissue, shake radially to scratch the pleura or blood vessels, and cause pneumothorax, bleeding and other injuries. In addition, the potential energy accumulated by the continuous force will be released instantaneously when the blockage is removed, causing an explosive and rapid extraction, which may induce reexpansion pulmonary edema. It causes chest tightness, discomfort and other effects on the patient, especially not conducive to the tolerance of the elderly or those with poor cardiopulmonary function, resulting in complete dependence on artificial experience for operation safety, and significant risk. SUMMARY

[0004] In order to solve the above problems, the present application provides a surgical pleural effusion suction device, which adopts the following technical scheme:

[0005] The utility model provides a surgical pleural effusion suction device, including main body module and feedback module, the main body module includes needle cylinder, the inside of needle cylinder is provided with piston, the outer surface of piston is provided with damping ring and needle cylinder inner wall contact, the outer surface of needle cylinder is provided with the sleeve cylinder near one end position, one end of sleeve cylinder is connected with the control shell, the feedback module includes the installation rod of piston one end, the outer surface of installation rod is sleeved with sleeve rod, the top and bottom of installation rod all are opened the straight angle trapezoid groove, two limit components are connected on the sleeve rod, two limit components are respectively with two straight angle trapezoid groove inner wall contact, two limit components are provided with connecting module between, one end of installation rod and the inner wall of sleeve rod are connected with the tension spring, the inside of control shell is provided with control component, adjustment component and limiting component, control component is connected with limiting component, control component and limiting component all are connected with the outer surface of sleeve rod.

[0006] Further, the limit component includes a movable block movably connected to the top of the sleeve rod, a roller rotatably connected to the bottom of the movable block, the outer surface of the roller in contact with the inner wall of one of the straight angle trapezoidal grooves, a lifting block movably connected to the inside of the movable block, a resistance block fixedly connected to the top of the lifting block, the resistance block extending to the outside of the movable block, a friction block fixedly connected to the top of the resistance block, the friction block adapted to the inner wall of the needle cylinder, the front and rear end faces of the outer surface of the movable block each fixedly connected with an installation plate, and a return spring fixedly connected between the two installation plates and the sleeve rod.

[0007] Further, the limit component includes an adjustment screw rotatably connected to the inside of the movable block, the top and bottom ends of the adjustment screw extending to the outside of the movable block, the lifting block threadedly connected to the outer surface of the adjustment screw, and the outer surface of the resistance block provided with a first numerical groove.

[0008] Further, the control component includes a torsion rod rotatably connected between the inner walls of the control shell, the outer surface of the torsion rod fixedly connected with a control handle, the outer surface of the torsion rod fixedly connected with a torsion spring between the two sides of the inner wall of the control shell, the two torsion springs respectively close to the two ends of the torsion rod, the outer surface of the torsion rod fixedly connected with a transmission wheel, the outer surface of the transmission wheel rotatably connected with a gear ring, the inside of the transmission wheel opened with a plurality of through grooves, a plurality of the inside of the through grooves fixedly connected with a fixed spring, one end of a plurality of the fixed spring fixedly connected with a first ratchet rod, the inner wall of the gear ring opened with an annular ratchet groove, one end of a plurality of the first ratchet rod movably connected in the inside of the annular ratchet groove, and the top of the sleeve rod opened with a tooth groove engaged with the gear ring.

[0009] Further, the operation assembly further comprises two movable sleeves arranged on the outer surface of the torsion rod, the two movable sleeves are located on the two sides of the transmission wheel respectively, a plurality of connecting rods are hinged to the two movable sleeves respectively, a plurality of connecting blocks are fixedly connected to the two sides of the first ratchet rod, one end of the plurality of connecting rods is hinged to the plurality of connecting blocks respectively, and the outer surfaces of the two movable sleeves are fixedly connected with a plurality of blocking rings.

[0010] Further, the limiting assembly comprises two strip-shaped grooves formed in the bottom of the operation shell, the bottom of the operation shell is movably connected with a hollow sleeve rod, the hollow sleeve rod is located between the two strip-shaped grooves, the inside of the hollow sleeve rod is movably connected with a second ratchet rod, the bottom of the sleeve rod is provided with a ratchet groove, the top end of the second ratchet rod is movably connected with the inner wall of the ratchet groove, and the bottom end of the second ratchet rod is fixedly connected with a strip-shaped spring in the inside of the hollow sleeve rod.

[0011] Further, the limiting assembly further comprises two long sleeve plates movably arranged on the outer surfaces of the two movable sleeves, the bottom ends of the two long sleeve plates extend to the bottom of the operation shell through the strip-shaped grooves, the two long sleeve plates are slidably connected with the interiors of the two strip-shaped grooves respectively, a boost rod is hinged between the bottom end of each long sleeve plate and the bottom end of the hollow sleeve rod, the bottom of the operation shell is fixedly connected with a first magnetic block, the outer surface of the hollow sleeve rod is fixedly connected with a pull plate, the top of the pull plate is fixedly connected with a second magnetic block, and the second magnetic block is magnetically connected with the first magnetic block.

[0012] Further, the connecting module comprises a hexagonal connecting groove, the hexagonal connecting groove is formed in one end of the adjusting screw of one force limiting assembly, the inside of the hexagonal connecting groove is movably connected with a hexagonal rod, and the hexagonal rod is connected with the other end of the adjusting screw of the other force limiting assembly.

[0013] Further, the adjusting assembly comprises two lifting screws which are screw-connected to the top of the operation shell, the two sides of the operation shell are provided with a perspective slot and a second numerical slot respectively, and the two second numerical slots are close to the two perspective slots respectively.

[0014] Further, the feedback module comprises a mounting stud arranged at one end of the piston, the mounting stud is screw-connected with one end of the mounting rod, and the sleeve cylinder is screw-connected to the outer surface of the needle cylinder.

[0015] In summary, the present application has the following beneficial technical effects:

[0016] (1) The present application forms the integrated mechanical control of the liquid extraction force and the blockage state through the installation of the rod, the right trapezoidal slot, the sleeving rod, the force limiting assembly, the control assembly, the limiting assembly and the tension spring, the damping ring limits the moving speed, and when the blockage occurs, the tension spring cannot pull the piston, the force limiting assembly is lifted and touches the inner wall of the needle cylinder, so that the control assembly cannot be pressed down, which mechanically limits excessive force, avoids the burst liquid extraction caused by needle shaking displacement, tissue damage and blockage falling, and clearly feedbacks the blockage state through the control assembly pressing, solves the safety hidden danger of the prior art depending on manual experience, and improves the liquid extraction safety.

[0017] (2) The present application realizes the accurate adjustment of the single liquid extraction amount through the setting of the lifting screw rod, the second numerical slot, the perspective slot, the adjusting screw rod and the first numerical slot, the lifting screw rod can be rotated to adjust the pressing amplitude of the control assembly, the needs of patients of different ages and physical conditions are met, the problems of chest tightness and pleural reaction caused by improper single dose are avoided, the clinical needs of precise liquid extraction of small amount of effusion are met, and the height of the friction block is adjustable, so that when the needle tube is blocked, the complete pressing action of the control handle cannot be completed, and the uniformity of the operation feedback is ensured.

[0018] (3) The present application is provided with the long sleeve plate, the pull plate, the booster rod, the movable sleeve and the blocking ring, the separation of the second ratchet rod and the ratchet slot and the separation of the first ratchet rod and the annular ratchet slot can be realized by pressing the pull plate, the operation steps are simplified, the user is convenient to use, and the operation convenience of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the present application;

[0021] Figure 3 It is a schematic diagram of the internal structure of the needle cylinder of the present application;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the force limiting assembly of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of the control assembly of the present application;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the transmission wheel of the present application;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the present application Figure 1 It is a schematic diagram of the enlarged structure of the present application

[0026] Figure 8 It is a schematic diagram of the enlarged structure of the present application Figure 2 It is a schematic diagram of the enlarged structure of the present application

[0027] Figure 9 For the present application Figure 4 Amplification structure schematic diagram at C in the present application

[0028] Explanation of figure marks:

[0029] 100, main module; 110, needle cylinder; 120, sleeve cylinder; 130, control shell; 140, piston; 150, damping ring;

[0030] 200, feedback module; 210, mounting stud; 220, mounting rod; 230, right trapezoidal groove; 240, sleeve rod; 250, force limiting assembly; 251, movable block; 252, roller; 253, lifting block; 254, resistance block; 255, friction block; 256, mounting plate; 257, first numerical groove; 258, adjusting screw; 260, tension spring; 270, control assembly; 271, torsion rod; 272, control handle; 273, torsion spring; 274, transmission wheel; 275, gear ring; 276, annular ratchet groove; 277, fixed spring; 278, first ratchet rod; 279, movable sleeve; 2710, link block; 2711, link rod; 2712, blocking ring; 280, adjusting assembly; 281, lifting screw; 282, second numerical groove; 283, perspective groove; 290, limiting assembly; 291, hollow sleeve rod; 292, second ratchet rod; 293, ratchet groove; 294, strip spring; 295, positioning spring; 296, first magnetic block; 297, pull plate; 298, second magnetic block; 299, long sleeve plate; 2910, boost rod;

[0031] 300, connection module; 310, hexagonal connection groove; 320, hexagonal rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments; based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected internally between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0035] The application will be further described below in conjunction with the accompanying drawings. Figures 1-9 The application will be further described below in conjunction with the accompanying drawings.

[0036] Please refer to Figures 1-9 A surgical pleural effusion suction device, comprising a main body module 100 and a feedback module 200, the main body module 100 comprises a needle cylinder 110, the inside of the needle cylinder 110 is provided with a piston 140, the outer surface of the piston 140 is provided with a damping ring 150 in contact with the inner wall of the needle cylinder 110, the outer surface of the needle cylinder 110 is provided with a sleeving cylinder 120 near one end, one end of the sleeving cylinder 120 is connected with a control shell 130, the feedback module 200 comprises a mounting rod 220 provided at one end of the piston 140, the outer surface of the mounting rod 220 is sleeved with a sleeving rod 240, the top and bottom of the mounting rod 220 are both provided with a right trapezoidal slot 230, two force limiting assemblies 250 are connected on the sleeving rod 240, the two force limiting assemblies 250 are respectively in contact with the inner walls of the two right trapezoidal slots 230, a connecting module 300 is arranged between the two force limiting assemblies 250, a tension spring 260 is connected between one end of the mounting rod 220 and the inner wall of the sleeving rod 240, the inside of the control shell 130 is provided with a control assembly 270, an adjusting assembly 280 and a limiting assembly 290, the control assembly 270 is connected with the limiting assembly 290, and the control assembly 270 and the limiting assembly 290 are both connected with the outer surface of the sleeving rod 240.

[0037] In use, one end of the needle cylinder 110 is inserted into the position of extracting the effusion, and then the medical staff completely presses the control assembly 270, which will drive the sleeved rod 240 to move on the outer surface of the mounting rod 220, and the limiting assembly 290 locks the sleeved rod 240 after displacement, so that the tension spring 260 is stretched, the sleeved rod 240 drives the two force limiting assemblies 250 to rise, at this time the tension spring 260 will gradually contract, thereby exerting a pulling force on the mounting rod 220 and the piston 140, the piston 140 drives the damping ring 150 to slowly slide in the inner wall of the needle cylinder 110, thereby realizing the extraction of the effusion, so that a certain amount of effusion can be extracted each time the control assembly 270 is pressed, and the slow extraction of the effusion can avoid adverse reactions caused by too fast extraction. When the needle tube of the needle cylinder 110 is blocked, the tension of the tension spring 260 cannot pull the piston 140 to displace after the control assembly 270 is pressed, so that the tension spring 260 will not contract and remain in a stretched state, and the force limiting assembly 250 will be lifted by the right-angled trapezoidal groove 230 to be extremely close to the inner wall of the needle cylinder 110, so that when the sleeved rod 240 is moved next time by pressing the control assembly 270, the force limiting assembly 250 is pushed by the right-angled trapezoidal groove 230 to abut against the inner wall of the needle cylinder 110, so that the control assembly 270 cannot be pressed down, thereby avoiding excessive pulling force when the needle cylinder 110 is blocked, and preventing the phenomenon of violent suction caused by the falling of the blockage. According to the patient's condition, age and body, the adjustment assembly 280 can be controlled to change the distance of the transmission of the sleeved rod 240 each time the control assembly 270 is pressed, and then the two force limiting assemblies 250 are adjusted to the appropriate position to match the control assembly 270, so that the control assembly 270 cannot be completely pressed down the second time after the needle tube of the needle cylinder 110 is blocked, thereby conveying feedback to the medical staff and letting them know that the needle tube is blocked. After the needle tube is blocked, the piston 140 needs to be pushed in the reverse direction to see if it can be unblocked. At this time, the medical staff pulls the limiting assembly 290 to disconnect the sleeved rod 240, and then the control assembly 270 is disconnected from the sleeved rod 240, and the sleeved rod 240 and the tension spring 260 are manually reset, the sleeved rod 240 is pushed inward, and a certain pressure is applied to the piston 140. If it cannot be unblocked, the needle needs to be pulled out and the subsequent puncture operation needs to be performed.

[0038] The force limiting assembly 250 comprises a movable block 251 movably connected to the top of the sleeved rod 240, the bottom of the movable block 251 is rotatably connected with a roller 252, the outer surface of the roller 252 is in contact with the inner wall of one of the right trapezoidal grooves 230, the inside of the movable block 251 is movably connected with a lifting block 253, the top of the lifting block 253 is fixedly connected with a resistance block 254, the resistance block 254 extends to the outside of the movable block 251, the top of the resistance block 254 is fixedly connected with a friction block 255, the friction block 255 is matched with the inner wall of the needle cylinder 110, the front end face and the rear end face of the outer surface of the movable block 251 are fixedly connected with a mounting plate 256, the two mounting plates 256 are fixedly connected with the sleeved rod 240 and are provided with a reset spring, the force limiting assembly 250 comprises an adjusting screw 258 rotatably connected to the inside of the movable block 251, the top end and the bottom end of the adjusting screw 258 extend to the outside of the movable block 251, the lifting block 253 is threadedly connected with the outer surface of the adjusting screw 258, the outer surface of the resistance block 254 is provided with a first numerical groove 257, the control assembly 270 comprises a torsion rod 271 rotatably connected between the inner walls of the control shell 130, the outer surface of the torsion rod 271 is fixedly connected with a control handle 272, the outer surface of the torsion rod 271 is fixedly connected with a torsion spring 273 between the inner walls of the control shell 130, the two torsion springs 273 are located close to the two ends of the torsion rod 271, the outer surface of the torsion rod 271 is fixedly connected with a transmission wheel 274, the outer surface of the transmission wheel 274 is rotatably connected with a gear ring 275, the inside of the transmission wheel 274 is provided with a plurality of through grooves, the inside of the plurality of through grooves is fixedly connected with a fixed spring 277, one end of the plurality of fixed springs 277 is fixedly connected with a first ratchet rod 278, the inner wall of the gear ring 275 is provided with an annular ratchet groove 276, one end of the plurality of first ratchet rods 278 is movably connected in the inside of the annular ratchet groove 276, the top of the sleeved rod 240 is provided with a tooth groove engaged with the gear ring 275, the control assembly 270 further comprises two movable sleeves 279 movably sleeved on the outer surface of the torsion rod 271, the two movable sleeves 279 are located on the two sides of the transmission wheel 274, a plurality of link rods 2711 are hinged on the two movable sleeves 279, a plurality of link blocks 2710 are fixedly connected on the two sides of the plurality of first ratchet rods 278, one end of the plurality of link rods 2711 is hinged with the plurality of link blocks 2710, the outer surfaces of the two movable sleeves 279 are fixedly connected with a blocking ring 2712.

[0039] When the needle tube of the syringe 110 is blocked, the pulling force of the tension spring 260 cannot pull the piston 140 to displace after the operation handle 272 is pressed, so that the tension spring 260 will not shrink to keep the stretching state, and the friction block 255 keeps the raised state, so that when the sleeved rod 240 is driven to move next time by pressing the operation handle 272, the roller 252 is pushed to rise again by the straight trapezoidal slot 230, the friction block 255 is in contact with the inner wall of the syringe 110, so that the operation handle 272 cannot be pressed down, thereby when the syringe 110 is blocked, excessive pulling force can be avoided to prevent the phenomenon of violent suction caused by the falling of the blockage, and according to the condition of the patient

[0040] The limiting assembly 290 comprises two strip-shaped slots formed in the bottom of the operation shell 130, the bottom of the operation shell 130 is movably connected with a hollow sleeved rod 291, the hollow sleeved rod 291 is located between the two strip-shaped slots, the inside of the hollow sleeved rod 291 is movably connected with a second ratchet rod 292, the bottom of the sleeved rod 240 is provided with a ratchet slot 293, the top end of the second ratchet rod 292 is movably connected with the inner wall of the ratchet slot 293, the bottom end of the second ratchet rod 292 is fixedly connected with a strip-shaped spring 294 in the inside of the hollow sleeved rod 291, the outer surface of the hollow sleeved rod 291 and the bottom of the inner wall of the operation shell 130 are fixedly connected with a positioning spring 295, the limiting assembly 290 further comprises two long sleeve plates 299 movably sleeved on the outer surfaces of the two movable sleeves 279, the bottom ends of the two long sleeve plates 299 are extended to the bottom of the operation shell 130 through the strip-shaped slots, the two long sleeve plates 299 are slidably connected with the interiors of the two strip-shaped slots respectively, the bottom ends of the two long sleeve plates 299 are hingedly connected with a boost rod 2910 between the bottom end of the hollow sleeved rod 291, the bottom of the operation shell 130 is fixedly connected with a first magnetic block 296, the outer surface of the hollow sleeved rod 291 is fixedly connected with a pull plate 297, the top of the pull plate 297 is fixedly connected with a second magnetic block 298, and the second magnetic block 298 is magnetically connected with the first magnetic block 296.

[0041] Press the pull plate 297, the pull plate 297 drives the hollow sleeve rod 291 to descend, the hollow sleeve rod 291 will drive the second magnetic block 298 and the first magnetic block 296 to separate, the second ratchet rod 292 and the ratchet groove 293 are separated from the connection of the sleeve rod 240, at this time the booster rod 2910 pushes two long sleeve plates 299 to move outward, the two long sleeve plates 299 will slide on the outer surface of the two movable sleeves 279, the subsequent long sleeve plate 299 contacts the blocking ring 2712 to push the movable sleeve 279, the movable sleeve 279 drives the plurality of first ratchet rods 278 through the connecting rod 2711 to withdraw from the annular ratchet groove 276, the manual auxiliary sleeve rod 240 is reset on the outer surface of the mounting rod 220, and then the sleeve rod 240 is pushed inward, a certain pressure is applied to the piston 140, if it cannot be dredged, it needs to be pulled out and then punctured again, so that the second ratchet rod 292 and the ratchet groove 293 are separated, and the first ratchet rod 278 and the annular ratchet groove 276 are separated by pressing the pull plate 297, which simplifies the operation steps and is convenient for users to use.

[0042] The connecting module 300 includes a hexagonal connecting groove 310, which is provided in one of the force limiting assemblies 250 and one end of the adjusting screw rod 258. The hexagonal connecting groove 310 is movably connected with a hexagonal rod 320, and the hexagonal rod 320 is connected with the other end of the adjusting screw rod 258 in the other force limiting assembly 250. The adjusting assembly 280 includes two lifting screw rods 281 which are screw-connected to the top of the control shell 130. The control shell 130 is provided with a second numerical groove 282 and a perspective groove 283 on both sides.

[0043] According to the patient's condition, age and body, before installing the piston 140, the height of the adjusting lifting screw rod 281 can be rotated to block the swing amplitude of the control handle 272 each time, so as to change the movement distance of the pressing control handle 272 driving the sleeve rod 240. Through the perspective groove 283, the second numerical groove 282 can be compared with the bottom end of the lifting screw rod 281 to know the amount of suction of each time of pressing, and then the adjusting screw rod 258 is rotated, the two adjusting screw rods 258 are connected through the hexagonal connecting groove 310 and the hexagonal rod 320, and the rotation of the two adjusting screw rods 258 drives the lifting block 253 to move and adjust the height of the two resistance blocks 254. By observing the first numerical groove 257, the height of the friction block 255 corresponds to the lifting screw rod 281. The amplitude of the control handle 272 is reduced, the initial height of the friction block 255 is increased, the amplitude of the control handle 272 is expanded, the initial height of the friction block 255 is reduced, and the pressing and extraction measurement is adjusted. When the needle tube of the needle cylinder 110 is blocked, the second pressing of the control handle 272 will still not be able to be pressed completely, so as to convey feedback to medical staff, so that they can know that the needle tube is blocked.

[0044] The feedback module 200 includes a mounting stud 210 disposed at one end of the piston 140, the mounting stud 210 being threadedly connected to one end of a mounting rod 220, and the sleeve 120 being threadedly connected to the outer surface of the syringe 110.

[0045] By virtue of the threaded connection of the mounting stud 210 and the sleeve 120, the main components of the device can be continuously used, and the syringe 110, the piston 140, the damping ring 150 and the mounting stud 210 can be replaced, thereby reducing the cost of fluid extraction.

[0046] The implementation principle of the embodiment of the present application is that before using the pleural effusion suction device, the nursing staff needs to complete a series of nursing preparation work: checking the core information of the patient's name, bed number, puncture site, etc., evaluating the patient's coagulation function, cardiopulmonary function and skin integrity of the puncture area, and excluding puncture contraindications; strictly implement the sterile operation specification, when the medical staff prepares, the piston 140 is located outside the needle cylinder 110, the piston 140 is installed on the installation rod 220 through the installation stud 210, then the piston 140 is inserted into the inside of the needle cylinder 110, and then the sleeving cylinder 120 is rotationally connected to the outer surface of the needle cylinder 110 to complete the installation, one end of the needle cylinder 110 is inserted into the position for extracting the effusion, then the medical staff completely presses the control handle 272, the control handle 272 will drive the torsion rod 271 to rotate, at this time the torsion spring 273 is tensioned, the rotation of the torsion rod 271 will drive the transmission wheel 274, the transmission wheel 274 drives the gear ring 275 through the first ratchet rod 278 and the annular ratchet groove 276, the gear ring 275 drives the sleeving rod 240 through the gear groove, the sleeving rod 240 moves on the outer surface of the installation rod 220, the second ratchet rod 292 moves in the ratchet groove 293, thereby locking the sleeving rod 240 after displacement, so that the tension spring 260 is stretched, at the same time, the sleeving rod 240 drives the two rollers 252 to roll in the right-angled trapezoidal groove 230, the rollers 252 will push the movable block 251 to rise, the movable block 251 drives the friction block 255 to approach the inner wall of the needle cylinder 110, the hexagonal rod 320 moves in the hexagonal connecting groove 310 at this time, the subsequent tension spring 260 will gradually contract, thereby pulling the piston 140 and the damping ring 150 to move, the piston 140 drives the damping ring 150 to slowly slide on the inner wall of the needle cylinder 110, thereby realizing the extraction of the effusion, at this time the rollers 252 roll in the right-angled trapezoidal groove 230 and descend, the control handle 272 is released, the torsion spring 273 drives the torsion rod 271 and the control handle 272 to reset, the transmission wheel 274 reversely rotates, so that the first ratchet rod 278 moves in the annular ratchet groove 276 and reciprocally contracts, the connecting rod 2711 reciprocally drives the movable sleeve 279 to move in the outer surface of the torsion rod 271 and the inner surface of the long sleeve plate 299, slowly extracting the effusion by repeatedly pressing the control handle 272 can avoid adverse reactions caused by too fast extraction, and when the needle tube of the needle cylinder 110 is blocked, after pressing the control handle 272, the tension of the tension spring 260 cannot pull the piston 140 to move, so that the tension spring 260 will not contract and remains in the stretched state, and the friction block 255 remains in the raised state, so that when the sleeving rod 240 moves next time driven by the control handle 272, the rollers 252 are pushed by the right-angled trapezoidal groove 230 to rise again, the friction block 255 abuts against the inner wall of the needle cylinder 110, so that the control handle 272 cannot be pressed down, thereby avoiding applying too much tension when the needle cylinder 110 is blocked, preventing the violent suction phenomenon caused by the falling of the blockage, and according to the patient's condition, age and body, before installing the piston 140,The height of the lifting screw 281 can be adjusted to block the swing amplitude of the control handle 272 for each complete pressing, so as to change the moving distance of the pressing control handle 272 to drive the sleeve rod 240, and the corresponding relationship between the second numerical groove 282 and the bottom end of the lifting screw 281 is observed through the perspective groove 283, so that the liquid extraction amount of each pressing can be known. Then the adjusting screw 258 is rotated, the two adjusting screws 258 are connected through the hexagonal connecting groove 310 and the hexagonal rod 320, the rotation of the two adjusting screws 258 drives the two resistance blocks 254 to move and adjust the height of the lifting block 253, and the height of the friction block 255 is adjusted to correspond to the lifting screw 281 by observing the first numerical groove 257. When the control handle 272 is reduced in amplitude, the initial height of the friction block 255 is increased, when the control handle 272 is expanded in amplitude, the initial height of the friction block 255 is reduced, and after the pressing and extraction measurement is adjusted, the second pressing of the control handle 272 will still not be able to be completely pressed down when the needle tube of the needle cylinder 110 is blocked, so as to convey feedback to medical staff and ensure the uniformity of feedback, so that the medical staff can know that the needle tube is blocked. After the needle tube is blocked, the piston 140 needs to be pushed in the reverse direction to see whether it can be unblocked. At this time, the medical staff presses the pull plate 297, the pull plate 297 drives the hollow sleeve rod 291 to descend, the hollow sleeve rod 291 drives the second magnetic block 298 to separate from the first magnetic block 296, the second ratchet rod 292 separates from the ratchet groove 293 to disconnect the sleeve rod 240, at this time the booster rod 2910 drives the two long sleeves 299 to move outward, the two long sleeves 299 will slide on the outer surface of the two movable sleeves 279, and the subsequent long sleeves 299 contact the blocking ring 2712 to drive the movable sleeves 279, the movable sleeves 279 drive the plurality of first ratchet rods 278 through the connecting rod 2711 to withdraw from the annular ratchet groove 276, and the manually assisted sleeve rod 240 is reset on the outer surface of the mounting rod 220. Then the sleeve rod 240 is pushed inward, a certain pressure is applied to the piston 140, if it cannot be unblocked, the needle needs to be pulled out and the puncture operation needs to be performed again. After the puncture and liquid extraction operation is completed, the nursing staff needs to immediately carry out postoperative care: assisting the patient to maintain a comfortable body position, pressing the puncture point with sterile gauze for 5-10 minutes, the force is appropriate to effectively stop bleeding and not affect the patient's breathing, avoiding bleeding, exudation or subcutaneous hematoma at the puncture site; continuously monitoring the patient's vital signs to avoid abnormal conditions of the patient.

[0047] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A surgical pleural effusion aspiration device, comprising a main module (100) and a feedback module (200), characterized in that: The main module (100) includes a syringe (110), a piston (140) is provided inside the syringe (110), a damping ring (150) is provided on the outer surface of the piston (140) and contacts the inner wall of the syringe (110), and a sleeve (120) is provided on the outer surface of the syringe (110) near one end, and a control shell (130) is connected to one end of the sleeve (120). The feedback module (200) includes a mounting rod (220) disposed at one end of the piston (140). A sleeve rod (240) is fitted onto the outer surface of the mounting rod (220). Right-angled trapezoidal grooves (230) are provided at the top and bottom of the mounting rod (220). Two force-limiting components (250) are connected to the sleeve rod (240). The two force-limiting components (250) respectively contact the inner walls of the two right-angled trapezoidal grooves (230). A connecting module (300) is provided between the two. A tension spring (260) is connected between one end of the mounting rod (220) and the inner wall of the sleeve rod (240). The control housing (130) is provided with a control component (270), an adjustment component (280) and a limiting component (290). The control component (270) is connected to the limiting component (290). Both the control component (270) and the limiting component (290) are connected to the outer surface of the sleeve rod (240).

2. The surgical pleural effusion aspiration device according to claim 1, characterized in that: The force limiting component (250) includes a movable block (251) movably connected to the top of the sleeve rod (240). A roller (252) is rotatably connected to the bottom of the movable block (251). The outer surface of the roller (252) contacts the inner wall of one of the right-angled trapezoidal grooves (230). A lifting block (253) is movably connected inside the movable block (251). A resistance block (254) is fixedly connected to the top of the lifting block (253). The resistance block (254) extends to the outside of the movable block (251). A friction block (255) is fixedly connected to the top of the resistance block (254). The friction block (255) is adapted to the inner wall of the syringe (110). Mounting plates (256) are fixedly connected to the front and rear faces of the outer surface of the movable block (251). A return spring is fixedly connected between the two mounting plates (256) and the sleeve rod (240).

3. The surgical pleural effusion aspiration device according to claim 2, characterized in that: The force limiting component (250) includes an adjusting screw (258) rotatably connected inside the movable block (251). The top and bottom ends of the adjusting screw (258) extend to the outside of the movable block (251). The lifting block (253) is threadedly connected to the outer surface of the adjusting screw (258). The outer surface of the resistance block (254) is provided with a first numerical groove (257).

4. The surgical pleural effusion aspiration device according to claim 3, characterized in that: The control assembly (270) includes a torsion bar (271) rotatably connected between the two sides of the inner wall of the control housing (130). A control handle (272) is fixedly connected to the outer surface of the torsion bar (271). Torsion springs (273) are fixedly connected between the outer surface of the torsion bar (271) and the two sides of the inner wall of the control housing (130). The two torsion springs (273) are respectively close to the two ends of the torsion bar (271). A transmission wheel (274) is fixedly connected to the outer surface of the torsion bar (271). The outer surface of the transmission wheel (274) is... A gear ring (275) is rotatably connected to the drive wheel (274). Multiple through slots are provided inside the drive wheel (274). A fixed spring (277) is fixedly connected inside each of the multiple through slots. A first ratchet bar (278) is fixedly connected to one end of each of the multiple fixed springs (277). An annular ratchet groove (276) is provided on the inner wall of the gear ring (275). One end of each of the multiple first ratchet bars (278) is movably connected inside the annular ratchet groove (276). A toothed groove that meshes with the gear ring (275) is provided on the top of the sleeve rod (240).

5. A surgical pleural effusion aspiration device according to claim 4, characterized in that: The control assembly (270) also includes two movable sleeves (279) that are movably sleeved on the outer surface of the torsion bar (271). The two movable sleeves (279) are located on both sides of the transmission wheel (274). Multiple connecting rods (2711) are hinged on both movable sleeves (279). Connecting blocks (2710) are fixedly connected to both sides of the multiple first ratchet rods (278). One end of the multiple connecting rods (2711) is hinged to the multiple connecting blocks (2710). A blocking ring (2712) is fixedly connected to the outer surface of both movable sleeves (279).

6. A surgical pleural effusion aspiration device according to claim 5, characterized in that: The limiting component (290) includes two strip grooves formed at the bottom of the control housing (130). A hollow sleeve rod (291) is movably connected to the bottom of the control housing (130). The hollow sleeve rod (291) is located between the two strip grooves. A second ratchet rod (292) is movably connected inside the hollow sleeve rod (291). A ratchet groove (293) is formed at the bottom of the sleeve rod (240). The top end of the second ratchet rod (292) is movably connected to the inner wall of the ratchet groove (293). A strip spring (294) is fixedly connected to the bottom of the hollow sleeve rod (291). A positioning spring (295) is fixedly connected between the outer surface of the hollow sleeve rod (291) and the bottom of the inner wall of the control housing (130).

7. A surgical pleural effusion aspiration device according to claim 6, characterized in that: The limiting component (290) also includes two long sleeve plates (299) that are respectively movably sleeved on the outer surfaces of the two movable sleeves (279). The bottom ends of the two long sleeve plates (299) extend to the bottom of the control shell (130) through strip grooves. The two long sleeve plates (299) are slidably connected to the interior of the two strip grooves respectively. A push rod (2910) is hinged between the bottom ends of the two long sleeve plates (299) and the bottom end of the hollow sleeve rod (291). A first magnetic block (296) is fixedly connected to the bottom of the control shell (130). A pull plate (297) is fixedly connected to the outer surface of the hollow sleeve rod (291). A second magnetic block (298) is fixedly connected to the top of the pull plate (297). The second magnetic block (298) is magnetically connected to the first magnetic block (296).

8. A surgical pleural effusion aspiration device according to claim 7, characterized in that: The connection module (300) includes a hexagonal connection groove (310), which is formed at one end of the adjusting screw (258) in one of the force limiting components (250). A hexagonal rod (320) is movably connected inside the hexagonal connection groove (310), and the hexagonal rod (320) is connected to one end of the adjusting screw (258) in another force limiting component (250).

9. A surgical pleural effusion aspiration device according to claim 8, characterized in that: The adjustment assembly (280) includes two lifting screws (281) that are threaded to the top of the control housing (130). The control housing (130) has a viewing groove (283) on both sides and a second numerical groove (282) on both sides. The two second numerical grooves (282) are respectively close to the two viewing grooves (283).

10. A surgical pleural effusion aspiration device according to claim 9, characterized in that: The feedback module (200) includes a mounting stud (210) disposed at one end of the piston (140), the mounting stud (210) being threadedly connected to one end of the mounting rod (220), and the sleeve (120) being threadedly connected to the outer surface of the syringe (110).

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