Pipeline connecting device for hemodialysis

Abstract

The invention relates to the technical field of hemodialysis, and discloses a hemodialysis pipeline connecting device which comprises two pipeline mechanisms, a connecting mechanism is jointly connected between the two pipeline mechanisms, the connecting mechanism comprises an outer shell, sealing sleeves are fixedly installed at the two ends of the outer shell, and the two ends of the outer shell are each fixedly provided with one sealing sleeve. The sealing sleeve is arranged on the periphery of the pipeline mechanism in a sleeving mode. Sealing mechanisms are further arranged at the two ends of the connecting mechanism, each sealing mechanism comprises outer sliding ring bodies arranged on the two sides of the outer shell, multiple sets of first sealing gaskets are fixedly installed at one ends of the outer sliding ring bodies, and the rotating pipeline body or the outer shell, the inner sliding ring bodies and the fixed ring bodies are screwed together. The first sealing gaskets are twisted in the annular space until the edges of the adjacent first sealing gaskets are attached to each other and completely contained in the annular space, so that the inner sliding ring body, the first sealing gaskets and the pipeline body can be tightly attached together.

Description

Technical Field

[0001] The invention relates to the technical field of hemodialysis, in particular to a pipeline connecting device for hemodialysis. Background Art

[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains blood from the body to the outside of the body and passes it through a dialyzer composed of countless hollow fibers. The blood and an electrolyte solution (dialysate) containing electrolytes at concentrations similar to those in the body are exchanged inside and outside the hollow fibers through the principles of diffusion, ultrafiltration, adsorption and convection. This removes metabolic waste from the body, maintains electrolyte and acid-base balance, removes excess water from the body, and returns the purified blood. The entire process is called hemodialysis.

[0003] Hemodialysis tubing is similar, and both ends of the arteriovenous tubing have a single connector. If anticoagulants are not used during hemodialysis, blood coagulation is likely to occur. Patients with arteriovenous fistulas sometimes have insufficient flow. When this happens, a catheter needs to be placed for dialysis, which increases the patient's pain.

[0004] For example, a hemodialysis pipeline connection device with the announcement number CN221815114U specifically relates to the field of medical device technology. The hemodialysis pipeline connection device includes: a first fixed block and a second fixed block, on which a first connector and a second connector are fixedly installed respectively, a first sealing ring is installed on the side where the first connector and the second connector are close to each other, and a sealing tube is sleeved on the first connector. The hemodialysis pipeline connection device provided by the utility model can directly visually and operate to connect the first fixed block with the second fixed block through an external connecting ring, an extrusion column, a semi-clamping ring and a limiting tube, thereby reducing the possibility of misoperation, and two sealing measures, a first sealing ring and a second sealing ring, are provided between the first connector and the second connector connected to the dialysis tube, thereby improving the anti-leakage ability of the device.

[0005] Traditional hemodialysis tubing connection devices are generally made by plugging, but the hemodialysis tubing is long and is prone to accidental touching and breaking after connection, affecting the tubing connection effect. Traditional tubing connections usually require connecting both ends, which is cumbersome to operate. The tubing is exposed to air or other objects for a long time, which is prone to cross infection and affects its use.

[0006] Therefore, we propose a hemodialysis pipeline connecting device to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide a hemodialysis pipeline connection device to solve the problem in the background art that the hemodialysis pipeline is long and is easily accidentally touched or torn off after connection, thus affecting the pipeline connection effect.

[0008] To achieve the above object, the present invention provides the following technical solution: a hemodialysis pipeline connection device, comprising two pipeline mechanisms, wherein a connection mechanism is commonly connected between the two pipeline mechanisms, wherein the connection mechanism comprises an outer shell, and sealing sleeves are fixedly installed at both ends of the outer shell, and the sealing sleeves are sleeved on the outer periphery of the pipeline mechanism; The two ends of the connecting mechanism are also provided with sealing mechanisms, the sealing mechanisms include outer sliding ring bodies provided on both sides of the outer shell, one end of the outer sliding ring body is fixedly installed with multiple groups of first sealing gaskets, one end of the multiple first sealing gaskets is commonly fixedly installed with an inner sliding ring body, and the inner wall of the inner sliding ring body is provided with a first thread; A fixing mechanism is arranged inside the connecting mechanism, and the fixing mechanism includes a fixing ring body arranged on the inner wall of the outer shell, the fixing ring body is sleeved inside the pipeline mechanism, and a second thread is also arranged on the outer periphery of the fixing ring body, and the second thread is threadably connected to the first thread.

[0009] Preferably, the pipeline mechanism includes a pipeline body and a limit block fixedly installed on the periphery of the pipeline body, and adjacent limit blocks are arranged on both sides of the first sealing gasket.

[0010] Preferably, a first through hole and a second through hole are further provided on both sides of the outer shell, and the first through hole and the second through hole are respectively provided on both sides of the sealing sleeve.

[0011] Preferably, a limiting ring is fixedly mounted on one end of the inner sliding ring body, a second sealing gasket is fixedly mounted on the inner wall of the limiting ring, and a pull rod is fixedly mounted on one end of the outer sliding ring body.

[0012] Preferably, a sliding mechanism is also provided inside the connecting mechanism; The sliding mechanism includes a first connecting ring body on the inner wall of the outer shell, one end of the first connecting ring body is connected to a bellows, one end of the bellows is connected to a piston ring body, and a connecting rod is fixedly installed on the inner wall of the piston ring body.

[0013] Preferably, the fixing ring body is fixedly mounted on the inner wall of the first connecting ring body, the upper end of the first connecting ring body is further provided with a third through hole connected to the first through hole, and the first through hole and the third through hole are interlaced and connected with the pull rod.

[0014] Preferably, a rubber ring is connected to the fixed ring body, the second sealing gasket is clamped in the rubber ring body, a first fixed disk is fixedly mounted on the inner wall of the fixed ring body, and a fourth through hole is formed in the first fixed disk.

[0015] Preferably, a blocking mechanism is also provided inside the connecting mechanism; The blocking mechanism includes a second fixed disk arranged on one side of the first fixed disk, the second fixed disk is slidably mounted on the inner wall of the fixed ring body, a blocking block is fixedly mounted on one end of the second fixed disk, and the blocking block is also arranged in the fourth through hole.

[0016] Preferably, a sliding rod is fixedly mounted on one end of the second fixed plate, a sleeve is slidably mounted on one end of the sliding rod, the sleeve is fixedly connected to the connecting rod, and an elastic member is commonly connected between the second fixed plate and the sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When the pipeline body is connected, the fixed ring body and the sealing sleeve jointly fix and seal the pipeline body. The pipeline body or the outer shell is rotated, the inner sliding ring body and the fixed ring body are tightened together, and the first sealing gasket is twisted in the annular space until the edges of the adjacent first sealing gaskets fit together and are completely accommodated in the annular space, so that the inner sliding ring body, the first sealing gasket, and the pipeline body can fit tightly together. The mechanisms on both sides of the outer shell of the device are exactly the same, and the first thread and the second thread have opposite thread directions. When the outer shell rotates, the two pipeline bodies can be connected together at the same time. The device forms a multi-party seal through the twisted first sealing gasket, and is also locked together through a threaded connection, and will not be separated due to dragging, which greatly prevents the twisted first sealing gasket from falling off, is easy to plug and use, and has a good use effect.

[0018] 2. During the rotation of the pipeline body and the outer shell, the limit ring contacts the side wall of the outer shell, and the pipeline body and the outer shell cannot twist, thus realizing the installation of the device and facilitating the operation. During the installation of the device, the outer sliding ring body and the driving rod adaptively move away from the outer shell, and the piston ring body squeezes the bellows to move toward the pipeline body, thereby ensuring the sliding stability of the rod, the outer sliding ring body and the first sealing gasket.

[0019] 3. During the rotation of the pipeline body and the outer shell, the gas inside the rubber ring is discharged through the third through hole, the rubber ring is folded together, and the inner sliding ring body, the first sealing gasket, and the pipeline body move toward the outer shell, further increasing the tightness and sealing between the pipeline body and the outer shell. When the device is about to be connected together, the rubber ring can clamp the second sealing gasket therein, further increasing the tightness of the device and making it difficult to tear off.

[0020] 4. The piston ring moves toward the pipeline body, driving another set of sleeves and sliding rods to lengthen, and the elastic member is lengthened. After further lengthening, the second fixed plate and the blocking block move away from the first fixed plate and the fourth through hole until the two ends of the device are connected. When the pipeline body and the outer shell are completely connected together, the two ends can be connected to facilitate the circulation of the internal liquid, ensuring that the device will not leak or cross-infect before installation, and the protective effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the hemodialysis pipe connection device; Figure 2 This is an overall cross-sectional view of the hemodialysis pipe connection device; Figure 3 This is a schematic diagram of the pipeline structure of the pipeline connection device for hemodialysis; Figure 4 This is a schematic diagram of the connection mechanism structure of the hemodialysis pipe connection device; Figure 5 This is a schematic diagram of the sealing mechanism structure of the hemodialysis pipe connection device; Figure 6 This is a schematic diagram of the sliding mechanism structure of the hemodialysis pipe connection device; Figure 7 This is a schematic diagram of the fixing mechanism structure of the hemodialysis pipe connection device; Figure 8 This is a schematic diagram of the structure of the unblocking mechanism of the hemodialysis pipe connection device; Fig. 9 The present invention is a hemodialysis pipe connection device Figure 2 Enlarged view of point A in the middle.

[0022] In the figure: 1. pipeline mechanism; 11. pipeline body; 12. limit block; 2. connecting mechanism; 21. outer shell; 22. sealing sleeve; 23. first through hole; 24. second through hole; 3. sealing mechanism; 31. outer sliding ring body; 32. first sealing pad; 33. inner sliding ring body; 34. first thread; 35. limit ring; 36. second sealing pad; 37. pull rod; 4. sliding mechanism; 41. first connecting ring body; 42. third through hole; 43. bellows; 44. piston ring body; 45. connecting rod; 5. fixing mechanism; 51. fixing ring body; 52. second thread; 53. rubber ring; 54. first fixing disk; 55. fourth through hole; 6. unblocking mechanism; 61. second fixing disk; 62. blocking block; 63. sliding rod; 64. sleeve; 65. elastic member. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1-Figure 5 A pipeline connecting device for hemodialysis includes two pipeline mechanisms 1, and a connecting mechanism 2 is commonly connected between the two pipeline mechanisms 1. The connecting mechanism 2 includes an outer shell 21, and sealing sleeves 22 are fixedly installed at both ends of the outer shell 21. The inner diameter of the sealing sleeve 22 close to the outer shell 21 is smaller than the inner diameter close to the pipeline mechanism 1. The sealing sleeve 22 is sleeved on the outer periphery of the pipeline mechanism 1.

[0025] The pipeline mechanism 1 includes a pipeline body 11 and a limit block 12 fixedly installed on the outer periphery of the pipeline body 11 , and adjacent limit blocks 12 are arranged on both sides of the first sealing gasket 32 ​​.

[0026] The outer shell 21 is respectively plugged into two sides of the pipeline body 11 through sealing sleeves 22 on both sides. The sealing sleeves 22 are located outside the pipeline body 11.

[0027] Sealing mechanisms 3 are also provided at both ends of the connecting mechanism 2. The sealing mechanisms 3 include outer sliding ring bodies 31 arranged on both sides of the outer shell 21. One end of the outer sliding ring body 31 is fixedly installed with multiple groups of first sealing gaskets 32. The first sealing gaskets 32 are made of long rubber materials and have certain plasticity and sealing properties. One end of the multiple first sealing gaskets 32 is commonly fixedly installed with an inner sliding ring body 33. The inner wall of the inner sliding ring body 33 is provided with a first thread 34.

[0028] A fixing mechanism 5 is arranged inside the connecting mechanism 2, and the fixing mechanism 5 includes a fixing ring body 51 arranged on the inner wall of the outer shell 21, and the fixing ring body 51 is sleeved inside the pipeline mechanism 1. The outer periphery of the fixing ring body 51 is also provided with a second thread 52, and the second thread 52 is threadedly connected to the first thread 34.

[0029] There is an annular space between the sealing sleeve 22 and the fixed ring body 51, and the inner sliding ring body 33 slides in this space. When the pipeline body 11 is connected, the operator positions one of the pipeline bodies 11 in this space, and the fixed ring body 51 and the sealing sleeve 22 jointly fix and seal the pipeline body 11. The pipeline body 11 is against one side of the inner sliding ring body 33, and the limit blocks 12 on its outer periphery are clamped on both sides of the first sealing gasket 32. The pipeline body 11 or the outer shell 21 is rotated, and the inner sliding ring body 33 is tightened together with the fixed ring body 51 through the cooperation between the first thread 34 and the second thread 52, so that the inner sliding ring body 33 and the fixed ring body 51 are sealed together.

[0030] During the rotation of the pipeline body 11 and the outer shell 21, the limit block 12 of the pipeline body 11 and its first sealing gasket 32 ​​are twisted in the annular space until the edges of adjacent first sealing gaskets 32 fit together and are completely contained in the annular space, and the outer sliding ring body 31 adaptively moves away from the outer shell 21, and the inner diameter of the sealing sleeve 22 close to the outer shell 21 is smaller than the inner diameter close to the pipeline mechanism 1. The deeper the inner sliding ring body 33 goes, the smaller the space becomes. Multiple first sealing gaskets 32 are pressed in the pipeline body 11, so that the inner sliding ring body 33, the first sealing gasket 32, and the pipeline body 11 can fit tightly together.

[0031] The structures on both sides of the outer shell 21 of the device are completely the same, and the first thread 34 and the second thread 52 have opposite thread directions. When the outer shell 21 rotates, the two pipeline bodies 11 can be connected together at the same time.

[0032] The device forms a multi-sided seal through the twisted first sealing gasket 32, and is also locked together through threaded connection, so that it will not be separated due to dragging, and the twisted first sealing gasket 32 ​​is prevented from falling off to a great extent, so that it is easy to plug and use, and the use effect is good.

[0033] Example 2: Please refer to Figure 2-Figure 6 A first through hole 23 and a second through hole 24 are further provided on both sides of the outer shell 21 . The first through hole 23 and the second through hole 24 are respectively provided on both sides of the sealing sleeve 22 .

[0034] A pull rod 37 is fixedly installed at one end of the outer sliding ring body 31. During the rotation of the pipeline body 11 and the outer shell 21, the outer sliding ring body 31 adaptively moves away from the outer shell 21, and the pull rod 37 slides in the first through hole 23, causing the outer sliding ring body 31 to move linearly, ensuring that the first sealing gasket 32 ​​can achieve twisting.

[0035] A limit ring 35 is fixedly installed at one end of the inner sliding ring body 33. During the rotation of the pipeline body 11 and the outer shell 21, the inner sliding ring body 33 moves toward the outer shell 21 until the limit ring 35 hits the side wall of the outer shell 21. The pipeline body 11 and the outer shell 21 cannot twist, and the pipeline body 11 and the outer shell 21 can be connected. Another pipeline body 11 is connected to the outer shell 21 in the same way, and the installation of the device is realized, which is easy to operate.

[0036] A sliding mechanism 4 is also provided inside the connecting mechanism 2, and the sliding mechanism 4 includes a first connecting ring body 41 on the inner wall of the outer shell 21, one end of the first connecting ring body 41 is connected to a bellows 43, one end of the bellows 43 is connected to a piston ring body 44, the piston ring body 44 is slidably installed on the inner wall of the outer shell 21, and a connecting rod 45 is fixedly installed on the inner wall of the piston ring body 44.

[0037] During the rotation of the pipeline body 11 and the outer shell 21, the outer sliding ring body 31 and the driving rod 37 adaptively move away from the outer shell 21, and the rod 37 is also fixedly connected to the piston ring body 44. Therefore, when the device is installed, the piston ring body 44 squeezes the bellows 43 to move toward the pipeline body 11, ensuring the sliding stability of the rod 37, the outer sliding ring body 31, and the first sealing gasket 32.

[0038] Example 3: Please refer to Figure 3-Figure 9 The blocking mechanism 6 includes a second fixed disk 61 arranged on one side of the first fixed disk 54. The second fixed disk 61 is slidably mounted on the inner wall of the fixed ring body 51, and a blocking block 62 is fixedly mounted on one end of the second fixed disk 61.

[0039] In the initial state, the block 62 is still arranged in the fourth through hole 55, the inner sliding ring body 33 is located between the fixed ring body 51 and the sealing sleeve 22, and the interior of the device is a closed chamber for easy aseptic storage.

[0040] During the rotation of the pipeline body 11 and the outer shell 21, the outer sliding ring body 31 and the driving rod 37 adaptively move away from the outer shell 21, the piston ring body 44 squeezes the bellows 43 to move toward the pipeline body 11, the space inside the closed chamber is compressed, the gas inside the rubber ring 53 is discharged through the third through hole 42, the rubber ring 53 is folded together, and the fixed ring body 51 is pulled toward the outer shell 21, that is, the inner sliding ring body 33, the first sealing gasket 32, and the pipeline body 11 move toward the outer shell 21, further increasing the tightness and sealing between the pipeline body 11 and the outer shell 21.

[0041] A second sealing gasket 36 is fixedly installed on the inner wall of the limiting ring 35. The second sealing gasket 36 is inclined. When the devices are about to be connected together, the second sealing gasket 36 is clamped in the rubber ring 53. When the rubber ring 53 is folded together, the second sealing gasket 36 can be clamped therein. Both are made of rubber, have a certain friction force, are not easy to separate, and further increase the tightness of the device.

[0042] A sliding rod 63 is fixedly mounted on one end of the second fixed plate 61 , a sleeve 64 is slidably mounted on one end of the sliding rod 63 , the sleeve 64 is fixedly connected to the connecting rod 45 at the other end of the outer shell 21 , and an elastic member 65 is commonly connected between the second fixed plate 61 and the sleeve 64 .

[0043] The piston ring body 44 moves toward the pipeline body 11, driving another set of sleeves 64 and sliding rods 63 to lengthen, and the elastic member 65 is stretched, that is, when the device is installed, the inside of the device is a closed chamber, and after the device is taken out, its internal space is also less likely to be contaminated.

[0044] Example 4: Please refer to Figure 3-Figure 9 The fixed ring body 51 is fixedly mounted on the inner wall of the first connecting ring body 41 . The upper end of the first connecting ring body 41 is also provided with a third through hole 42 connected to the first through hole 23 . The first through hole 23 and the third through hole 42 are interlaced and connected with the pull rod 37 .

[0045] The fixed ring body 51 is also connected to a rubber ring 53 , and the second sealing pad 36 is clamped in the rubber ring body 53 . A first fixed disk 54 is fixedly mounted on the inner wall of the fixed ring body 51 , and a fourth through hole 55 is formed in the first fixed disk 54 .

[0046] The piston ring body 44 moves toward the pipeline body 11, driving another set of sleeves 64 and sliding rods 63 to stretch, and the elastic member 65 is stretched. After further stretching, the second fixed disk 61 and the blocking block 62 move away from the first fixed disk 54 and the fourth through hole 55 until the two ends of the device are connected. When the pipeline body 11 and the outer shell 21 are completely connected together, the two ends can be connected to facilitate the circulation of the internal liquid, ensuring that the device will not leak or cross-infect before installation, and the protection effect is good.

[0047] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hemodialysis pipeline connection device, comprising two pipeline mechanisms (1), wherein a connection mechanism (2) is commonly connected between the two pipeline mechanisms (1), characterized in that: The connecting mechanism (2) comprises an outer shell (21), and sealing sleeves (22) are fixedly mounted on both ends of the outer shell (21), and the sealing sleeves (22) are sleeved on the outer circumference of the pipeline mechanism (1); Sealing mechanisms (3) are also provided at both ends of the connection mechanism (2), the sealing mechanisms (3) comprising outer sliding ring bodies (31) provided on both sides of the outer shell (21), multiple groups of first sealing pads (32) being fixedly mounted on one end of the outer sliding ring body (31), an inner sliding ring body (33) being fixedly mounted on one end of the multiple first sealing pads (32), and a first thread (34) being provided on the inner wall of the inner sliding ring body (33); A fixing mechanism (5) is arranged inside the connecting mechanism (2), and the fixing mechanism (5) comprises a fixing ring body (51) arranged on the inner wall of the outer shell (21), and the fixing ring body (51) is sleeved inside the pipeline mechanism (1), and a second thread (52) is also arranged on the outer periphery of the fixing ring body (51), and the second thread (52) is threadably connected to the first thread (34).

2. A hemodialysis pipe connection device according to claim 1, characterized in that: The pipeline mechanism (1) comprises a pipeline body (11) and a limit block (12) fixedly mounted on the outer periphery of the pipeline body (11), and adjacent limit blocks (12) are arranged on both sides of the first sealing gasket (32).

3. A hemodialysis pipe connection device according to claim 1, characterized in that: A first through hole (23) and a second through hole (24) are also provided on both sides of the outer shell (21); the first through hole (23) and the second through hole (24) are respectively provided on both sides of the sealing sleeve (22).

4. A hemodialysis pipe connection device according to claim 3, characterized in that: A limit ring (35) is fixedly mounted on one end of the inner sliding ring body (33), a second sealing gasket (36) is fixedly mounted on the inner wall of the limit ring (35), and a pull rod (37) is fixedly mounted on one end of the outer sliding ring body (31), the pull rod (37) being slidably mounted in the first through hole (23).

5. A hemodialysis pipe connection device according to claim 4, characterized in that: A sliding mechanism (4) is also provided inside the connecting mechanism (2); The sliding mechanism (4) comprises a first connecting ring body (41) on the inner wall of the outer shell (21); one end of the first connecting ring body (41) is connected to a bellows (43) installed thereon; one end of the bellows (43) is connected to a piston ring body (44) installed thereon; the piston ring body (44) is slidably mounted on the inner wall of the outer shell (21); and a connecting rod (45) is fixedly mounted on the inner wall of the piston ring body (44).

6. A hemodialysis pipe connection device according to claim 5, characterized in that: The fixed ring body (51) is fixedly mounted on the inner wall of the first connecting ring body (41); the upper end of the first connecting ring body (41) is also provided with a third through hole (42) connected to the first through hole (23); the first through hole (23) and the third through hole (42) are interlaced and connected with the pull rod (37).

7. A hemodialysis pipe connection device according to claim 6, characterized in that: The fixed ring body (51) is also connected to a rubber ring (53), the second sealing pad (36) is clamped in the rubber ring body (53), a first fixed disk (54) is fixedly mounted on the inner wall of the fixed ring body (51), and a fourth through hole (55) is formed in the first fixed disk (54).

8. A hemodialysis pipe connection device according to claim 7, characterized in that: A blocking mechanism (6) is also provided inside the connecting mechanism (2); The blocking mechanism (6) comprises a second fixed disk (61) arranged on one side of the first fixed disk (54), the second fixed disk (61) being slidably mounted on the inner wall of the fixed ring body (51), a blocking block (62) being fixedly mounted on one end of the second fixed disk (61), and the blocking block (62) being further arranged in the fourth through hole (55).

9. A hemodialysis pipe connection device according to claim 8, characterized in that: A sliding rod (63) is fixedly mounted on one end of the second fixed plate (61), a sleeve (64) is slidably mounted on one end of the sliding rod (63), the sleeve (64) is fixedly connected to the connecting rod (45), and an elastic member (65) is commonly connected between the second fixed plate (61) and the sleeve (64).

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