Waste liquid connecting device for CRRT treatment

Abstract

The invention relates to the technical field of medical instruments, in particular to a waste liquid connecting device for CRRT treatment, which is characterized by comprising a waste liquid box, a liquid discharge pipe is arranged on the top surface of the waste liquid box, and two fixing rings are arranged on the bottom surface of the liquid discharge pipe; before connection, a first hand wheel can be rotated to drive a screw to abut against a first threaded connector and a second threaded connector to fix the first threaded connector and the second threaded connector, at the moment, a rotating shaft can be rotated to drive a main bevel gear to rotate so as to drive a driven bevel gear to rotate, and therefore the inner block can be rotated; the threaded pipe is driven to rotate to be in threaded connection with the first threaded connector and the second threaded connector, meanwhile, due to the fact that the inner block is rotated, the liquid discharging pipe and the connecting pipe cannot rotate along with the inner block, and therefore the situation that normal discharging of waste liquid is affected due to pipeline winding can be avoided; the problem that after threaded connection, the overall length of the pipeline is reduced, and the pipeline is broken or falls off is solved, and safety is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a waste liquid connection device for CRRT treatment. Background Art

[0002] CRRT (Continuous Renal Replacement Therapy) is a blood purification method for patients with acute kidney injury (AKI), and is suitable for patients with hemodynamic instability or those who need to gently remove solutes and water for a long time. CRRT continuously and slowly removes toxins, electrolytes and excess water in the blood through dialysis, filtration or a combination of both to maintain the internal environment stable. Therefore, CRRT devices usually need to introduce waste liquid into a waste liquid bag through a waste liquid tube to achieve the collection and treatment of waste liquid.

[0003] However, the waste liquid tube and the waste liquid bag in the prior art are usually connected by threads. This connection method has the following problems: First, since thread connection requires rotation and locking, the waste liquid tube will rotate when installing or disassembling, resulting in the pipeline being entangled, affecting the normal discharge of waste liquid. Second, after thread connection, the two tubes will be shortened due to the limitation of the connection method, reducing the overall length of the pipeline and making it easier to disconnect or fall off when subjected to external force pulling. To solve the above problems, we propose a waste liquid connection device for CRRT treatment. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a waste liquid connection device for CRRT treatment to solve the problems raised in the background art.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A waste liquid connection device for CRRT treatment, comprising: a waste liquid tank, a drain pipe is arranged on the top surface of the waste liquid tank, two fixing rings are arranged on the bottom surface of the drain pipe, and a connecting rod is fixedly installed between the two fixing rings; an installation component, which is arranged inside the waste liquid tank and is used for installing the drain pipe; a connection component, which is arranged on one side of the connecting rod and is used for connecting the drain pipe.

[0007] By adopting the above technical solutions, by setting the installation component and the connection component, it is used to realize the connection between the drain pipe and the waste liquid tank, and at the same time, it can avoid the problem that the drain pipe will rotate following in the prior art by thread connection, resulting in the pipeline being entangled and affecting the normal discharge of waste liquid. Second, after thread connection, the two tubes will be shortened due to the limitation of the connection method, reducing the overall length of the pipeline and making it easier to disconnect or fall off when subjected to external force pulling.

[0008] Preferably, the installation assembly includes: a connecting pipe fixedly installed inside the waste liquid tank, a first threaded joint fixedly installed inside the connecting pipe, a second threaded joint fixedly installed inside the drain pipe, an inner block disposed between the two fixing rings, a top hole opened on the top surface of the inner block, and an inner pipe fixedly installed inside the top hole.

[0009] By adopting the above technical solution, by providing the inner pipe, during use, through the connection of the inner pipe with the first threaded joint and the second threaded joint, the effect of initially connecting the drain pipe and the waste liquid tank can be achieved.

[0010] Preferably, the installation assembly further includes: two limiting rings, both of which are fixedly installed on the inner wall of the inner pipe, two threaded pipes are sleeved inside the inner pipe, a sealing ring is fixedly installed on the outer wall of the threaded pipe, a clamping groove is opened on the inner wall of the inner pipe, and a clamping block is fixedly installed on one side outer wall of the sealing ring, and the clamping block is sleeved with the clamping groove.

[0011] By adopting the above technical solution, by providing the threaded pipes, during use, by rotating the inner block, the threaded pipes can be driven to rotate and threadedly connect with the first threaded joint and the second threaded joint, thereby achieving the effect of connecting and discharging the waste liquid. At the same time, since the inner block is rotated, the drain pipe and the connecting pipe will not rotate accordingly, so that they will not get entangled and affect the normal discharge of the waste liquid. Moreover, during the threaded connection, the threaded pipes will move inside the inner pipe, and the drain pipe and the connecting pipe will not be shortened, resulting in a reduction in the pipeline length, further increasing safety.

[0012] Preferably, the installation assembly further includes: an outer ring groove opened on the outer wall of the inner block, a support rod fixedly installed on the inner wall of the connecting rod, the support rod is sleeved inside the outer ring groove, a sliding groove is opened on the outer wall of the outer ring groove, a connecting groove is opened on one side of the support rod, and a ball is rotatably connected inside the connecting groove.

[0013] By adopting the above technical solution, through the sleeve setting of the support rod and the outer ring groove, the inner block can be installed, and then through the setting of the balls to fit the sliding groove, the user can be assisted in rotating the inner block.

[0014] Preferably, the installation assembly further includes: two threaded holes, both of which are opened on the outer wall of the fixing ring, a screw is threadedly connected inside the threaded hole, and a first handwheel is fixedly installed on one side of the screw.

[0015] By adopting the above technical solution, before connection, by rotating the first handwheel, the screw can be driven to abut against the first threaded joint and the second threaded joint to fix them, further preventing the drain pipe and the connecting pipe from rotating.

[0016] Preferably, the connection component includes: a side hole opened on one side of the connecting rod on the left side. A bearing is fixedly installed inside the side hole, a rotating shaft is fixedly installed inside the bearing, a main bevel gear is fixedly installed on one side of the rotating shaft, and a driven bevel gear is fixedly installed on the top surface of the inner block. The driven bevel gear meshes with the main bevel gear.

[0017] By adopting the above technical solution, during connection, the rotation of the rotating shaft can drive the main bevel gear to rotate, thereby driving the driven bevel gear to rotate. Therefore, the effect of rotating the inner block can be achieved, increasing convenience.

[0018] Preferably, the connection component further includes: a second handwheel fixedly installed on one side of the rotating shaft, and a rubber pad is fixedly installed at one end of the screw rod.

[0019] By adopting the above technical solution, by setting the rubber pad, it is used to increase the fit between the screw rod and the first threaded joint and the second threaded joint, avoiding the situation of slippage.

[0020] Preferably, an inner hole is opened on the top surface of the waste liquid tank, and an exhaust valve is fixedly installed inside the inner hole.

[0021] By adopting the above technical solution, by setting the exhaust valve, it is used to discharge the air in the waste liquid tank during the collection of waste liquid, increasing practicality.

[0022] In summary, the present invention mainly has the following beneficial effects:

[0023] By setting the installation component and the connection component, it is used to realize the connection between the drain pipe and the waste liquid tank. At the same time, it can avoid the problem that in the prior art, the drain pipe will rotate along with the rotation during threaded connection, resulting in the winding of the pipeline and affecting the normal discharge of waste liquid. Secondly, after threaded connection, the two pipes will be shortened due to the limitation of the connection method, reducing the overall length of the pipeline and being more likely to break or fall off when pulled by an external force. By setting the inner pipe, during use, through the connection between the inner pipe and the first threaded joint and the second threaded joint, the effect of initially connecting the drain pipe and the waste liquid tank can be achieved.

[0024] By setting the threaded pipe, during use, by rotating the inner block, the threaded pipe can be driven to rotate and threadedly connect with the first threaded joint and the second threaded joint, thereby achieving the effect of connecting and discharging waste liquid. At the same time, since it is the inner block that rotates, the drain pipe and the connecting pipe will not rotate accordingly, so there will be no winding and affecting the normal discharge of waste liquid. And during threaded connection, the threaded pipe will move inside the inner pipe, and the drain pipe and the connecting pipe will not be shortened, resulting in a reduction in the pipeline length, further increasing safety. By setting the sleeve of the support rod and the outer ring groove, the inner block can be installed, and then through the setting of the ball bearings to fit the sliding groove, it can assist the user to rotate the inner block.

[0025] Before connection, the first handwheel can be rotated to drive the screw rod to press against the first threaded joint and the second threaded joint to fix them, further preventing the liquid discharge pipe and the connecting pipe from rotating. When connecting, the rotating shaft can be rotated to drive the main bevel gear to rotate, thereby driving the driven bevel gear to rotate. Therefore, the effect of rotating the inner block can be achieved, increasing convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 is a structural schematic diagram of the fixing ring of the present invention;

[0028] Figure 3 is a cross-sectional structural schematic diagram of the inner tube of the present invention;

[0029] Figure 4 is a structural schematic diagram of the support rod of the present invention;

[0030] Figure 5 is a structural schematic diagram of the inner block of the present invention.

[0031] Reference numerals: 100, waste liquid tank; 200, liquid discharge pipe; 300, fixing ring; 400, connecting rod; 500, mounting assembly; 501, connecting pipe; 502, first threaded joint; 503, second threaded joint; 504, inner block; 505, top hole; 506, inner tube; 507, outer ring groove; 508, support rod; 509, sliding groove; 510, connecting groove; 511, ball; 512, threaded hole; 513, screw rod; 514, first handwheel; 515, limiting ring; 516, threaded pipe; 517, sealing ring; 518, clamping groove; 519, clamping block; 600, connecting assembly; 601, side hole; 602, bearing; 603, rotating shaft; 604, main bevel gear; 605, driven bevel gear; 606, second handwheel; 607, rubber pad; 700, inner hole; 701, exhaust valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] The following embodiments are used to illustrate the present invention, but cannot be used to limit the protection scope of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions. Any simple improvement to the method of the present invention under the premise of the concept of the present invention belongs to the scope protected by the present invention.

[0034] Reference Figures 1 - 5 , a waste liquid connection device for CRRT treatment, comprising: a waste liquid tank 100, a drain pipe 200 is arranged on the top surface of the waste liquid tank 100, two fixing rings 300 are arranged on the bottom surface of the drain pipe 200, a connecting rod 400 is fixedly installed between the two fixing rings 300, and an installation component 500 for installing the drain pipe 200 is arranged inside the waste liquid tank 100. A connecting component 600 for connecting the drain pipe 200 is arranged on one side of the connecting rod 400. By setting the installation component 500 and the connecting component 600, the connection between the drain pipe 200 and the waste liquid tank 100 can be realized, and at the same time, it can avoid the problem that the drain pipe 200 will rotate along with the rotation in the prior art through threaded connection, resulting in the winding of the pipeline and affecting the normal discharge of waste liquid. Secondly, after threaded connection, the overall length of the pipeline will be reduced due to the limitation of the connection method, making the pipeline more likely to break or fall off when subjected to external pulling force. The installation component 500 includes: a connecting pipe 501, the connecting pipe 501 is fixedly installed inside the waste liquid tank 100, a first threaded joint 502 is fixedly installed inside the connecting pipe 501, a second threaded joint 503 is fixedly installed inside the drain pipe 200, an inner block 504 is arranged between the two fixing rings 300, a top hole 505 is opened on the top surface of the inner block 504, and an inner pipe 506 is fixedly installed inside the top hole 505. By setting the inner pipe 506, during use, the connection between the inner pipe 506, the first threaded joint 502 and the second threaded joint 503 can initially achieve the effect of connecting the drain pipe 200 and the waste liquid tank 100.

[0035] Reference Figures 1 - 5, the mounting assembly 500 further includes: two limiting rings 515, both of the two limiting rings 515 are fixedly installed on the inner wall of the inner tube 506. Two threaded tubes 516 are sleeved inside the inner tube 506. A sealing ring 517 is fixedly installed on the outer wall of the threaded tube 516. A clamping groove 518 is formed on the inner wall of the inner tube 506. A clamping block 519 is fixedly installed on one outer wall of the sealing ring 517. The clamping block 519 is sleeved with the clamping groove 518. By providing the threaded tube 516, during use, by rotating the inner block 504, the threaded tube 516 can be driven to rotate and be threadedly connected to the first threaded joint 502 and the second threaded joint 503, so as to achieve the effect of connecting and discharging the waste liquid. At the same time, because the inner block 504 is rotated, the drain pipe 200 and the connecting pipe 501 will not rotate accordingly, so that entanglement will not occur and the normal discharge of the waste liquid will not be affected. And in the threaded connection, the threaded tube 516 will move inside the inner tube 506, and the drain pipe 200 and the connecting pipe 501 will not be shortened to cause the reduction of the pipeline length, further increasing the safety. The mounting assembly 500 further includes: an outer ring groove 507, the outer ring groove 507 is formed on the outer wall of the inner block 504. A support rod 508 is fixedly installed on the inner wall of the connecting rod 400. The support rod 508 is sleeved inside the outer ring groove 507. A sliding groove 509 is formed on the outer wall of the outer ring groove 507. A connecting groove 510 is formed on one side of the support rod 508. A ball 511 is rotatably connected inside the connecting groove 510. By providing the sleeve of the support rod 508 and the outer ring groove 507, the inner block 504 can be installed, and then by providing the ball 511 to fit the sliding groove 509, the user can be assisted in rotating the inner block 504.

[0036] Reference Figures 1 - 5 , the mounting assembly 500 further includes: two threaded holes 512, both of the two threaded holes 512 are formed on the outer wall of the fixed ring 300. A screw 513 is threadedly connected inside the threaded hole 512. A first handwheel 514 is fixedly installed on one side of the screw 513. Before connection, by rotating the first handwheel 514, the screw 513 can be driven to abut against the first threaded joint 502 and the second threaded joint 503 to fix them, further avoiding the rotation of the drain pipe 200 and the connecting pipe 501. The connecting assembly 600 includes: a side hole 601, the side hole 601 is formed on one side of the left connecting rod 400. A bearing 602 is fixedly installed inside the side hole 601. A rotating shaft 603 is fixedly installed inside the bearing 602. A main bevel gear 604 is fixedly installed on one side of the rotating shaft 603. A driven bevel gear 605 is fixedly installed on the top surface of the inner block 504. The driven bevel gear 605 is meshed with the main bevel gear 604. During connection, by rotating the rotating shaft 603, the main bevel gear 604 can be driven to rotate, thereby driving the driven bevel gear 605 to rotate. Therefore, the effect of rotating the inner block 504 can be achieved, increasing the convenience.

[0037] Reference Figures 1 - 5, the connecting component 600 further includes: a second handwheel 606, which is fixedly installed on one side of the rotating shaft 603. One end of the screw rod 513 is fixedly installed with a rubber pad 607. By providing the rubber pad 607, it is used to increase the fitting degree between the screw rod 513 and the first threaded joint 502 and the second threaded joint 503, and avoid the situation of slippage. An inner hole 700 is opened on the top surface of the waste liquid tank 100, and an exhaust valve 701 is fixedly installed inside the inner hole 700. By providing the exhaust valve 701, it is used to discharge the air in the waste liquid tank 100 during the collection of waste liquid, increasing the practicality.

[0038] Working principle: Please refer to Figures 1 - 5 As shown, before connection, the first handwheel 514 can be rotated to drive the screw rod 513 to abut against the first threaded joint 502 and the second threaded joint 503 to fix them. At this time, the main bevel gear 604 can be rotated by rotating the rotating shaft 603, thereby driving the driven bevel gear 605 to rotate. Therefore, the rotating inner block 504 can be realized. By rotating the rotating inner block 504, the threaded pipe 516 is driven to rotate and threadedly connect with the first threaded joint 502 and the second threaded joint 503, so as to achieve the effect of connecting and discharging waste liquid. At the same time, since it is the rotating inner block 504, the drain pipe 200 and the connecting pipe 501 will not rotate accordingly, thereby avoiding the situation in the prior art that the drain pipe 200 will be driven to rotate during threaded connection, resulting in the pipeline being entangled and affecting the normal discharge of waste liquid. And in the threaded connection, the threaded pipe 516 will move inside the inner pipe 506, avoiding the drain pipe 200 and the connecting pipe 501 from shortening due to the limitation of the connection method after threaded connection, and reducing the overall length of the pipeline and causing problems such as disconnection or detachment, further increasing the safety.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meaning understood by those with ordinary skills in the field to which the present invention belongs. The words such as "including" or "comprising" used in the present invention mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The words such as "upper", "lower", "left", "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0040] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste liquid connection device for CRRT treatment, characterized in that: include: A waste liquid tank (100), wherein a drain pipe (200) is disposed on the top surface of the waste liquid tank (100), two fixing rings (300) are disposed on the bottom surface of the drain pipe (200), and a connecting rod (400) is fixedly installed between the two fixing rings (300); An installation component (500), the installation component (500) being arranged inside the waste liquid tank (100) and used for installing the liquid discharge pipe (200); A connecting assembly (600), wherein the connecting assembly (600) is arranged on one side of the connecting rod (400) and is used for connecting the liquid discharge pipe (200).

2. A CRRT treatment waste liquid connection device according to claim 1, characterized in that: The installation assembly (500) comprises: A connecting pipe (501), the connecting pipe (501) is fixedly installed inside the waste liquid tank (100), a first threaded joint (502) is fixedly installed inside the connecting pipe (501), a second threaded joint (503) is fixedly installed inside the discharge pipe (200), an inner block (504) is arranged between the two fixing rings (300), a top hole (505) is opened on the top surface of the inner block (504), and an inner pipe (506) is fixedly installed inside the top hole (505).

3. A CRRT treatment waste liquid connection device according to claim 2, characterized in that: The installation assembly (500) further includes: Two limiting rings (515), both of which are fixedly mounted on the inner wall of the inner tube (506), two threaded tubes (516) are sleeved inside the inner tube (506), a sealing ring (517) is fixedly mounted on the outer wall of the threaded tube (516), a retaining groove (518) is provided on the inner wall of the inner tube (506), a retaining block (519) is fixedly mounted on the outer wall of one side of the sealing ring (517), and the retaining block (519) is sleeved together with the retaining groove (518).

4. A CRRT treatment waste liquid connection device according to claim 3, characterized in that: The installation assembly (500) further includes: An outer ring groove (507) is provided on the outer wall of the inner block (504); a support rod (508) is fixedly installed on the inner wall of the connecting rod (400); the support rod (508) is sleeved inside the outer ring groove (507); a sliding groove (509) is provided on the outer wall of the outer ring groove (507); a connecting groove (510) is provided on one side of the support rod (508); a ball (511) is rollingly connected inside the connecting groove (510).

5. A CRRT treatment waste liquid connection device according to claim 4, characterized in that: The installation assembly (500) further includes: Two threaded holes (512), both of which are opened on the outer wall of the fixing ring (300), the inner threads of the threaded holes (512) are connected with a screw rod (513), and a first hand wheel (514) is fixedly installed on one side of the screw rod (513).

6. A CRRT treatment waste liquid connection device according to claim 5, characterized in that: The connection assembly (600) comprises: A side hole (601), wherein the side hole (601) is opened on a side of the connecting rod (400) on the left side, a bearing (602) is fixedly installed inside the side hole (601), a rotating shaft (603) is fixedly installed inside the bearing (602), a main bevel gear (604) is fixedly installed on one side of the rotating shaft (603), a slave bevel gear (605) is fixedly installed on the top surface of the inner block (504), and the slave bevel gear (605) is meshed with the main bevel gear (604).

7. A CRRT treatment waste liquid connection device according to claim 6, characterized in that: The connection assembly (600) further comprises: A second hand wheel (606) is fixedly mounted on one side of the rotating shaft (603), and a rubber pad (607) is fixedly mounted on one end of the screw rod (513).

8. The CRRT treatment waste liquid connection device according to claim 1, characterized in that: An inner hole (700) is formed on the top surface of the waste liquid tank (100), and an exhaust valve (701) is fixedly installed inside the inner hole (700).

Images