CN110917421A - Hemodialysis pipeline connecting device - Google Patents
Hemodialysis pipeline connecting device Download PDFInfo
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- CN110917421A CN110917421A CN201911155783.XA CN201911155783A CN110917421A CN 110917421 A CN110917421 A CN 110917421A CN 201911155783 A CN201911155783 A CN 201911155783A CN 110917421 A CN110917421 A CN 110917421A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
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Abstract
The invention discloses a hemodialysis pipeline connecting device, which comprises a mounting seat, wherein a connecting mechanism is arranged on the mounting seat, two positioning mechanisms are symmetrically arranged in the mounting seat corresponding to the connecting mechanism, one ends of the two positioning mechanisms, which are far away from each other, penetrate through the corresponding side wall of the mounting seat and extend out of the mounting seat, and are fixedly connected with a pulling mechanism, and the hemodialysis pipeline connecting device has the beneficial effects that: when the connecting device is used, the two positioning rods are pulled upwards by the pull ring to separate the two positioning rods from the connecting groove, the connecting block and the notch of the connecting groove can be aligned and inserted, when the connecting block completely enters the connecting groove, the notch of the positioning groove is overlapped with the orifice of the positioning hole, the pull ring is loosened, the positioning rods extend into the positioning groove under the elastic force of the spring to position the connecting block, and the connecting position is prevented from being loosened.
Description
Technical Field
The invention belongs to the technical field of hemodialysis, and particularly relates to a hemodialysis pipeline connecting device.
Background
Hemodialysis is carried out by draining blood in vivo to outside of the body, passing through a dialyzer composed of a plurality of hollow fibers, exchanging substances between blood and electrolyte solution with similar body concentration in one hollow fiber by dispersion/convection, removing metabolic waste in the body, maintaining electrolyte and acid-base balance, removing excessive water in the body, and returning purified blood to the body.
The existing pipeline connecting device is usually only simply connected in a threaded manner through threads, and in the process of connecting and using the existing pipeline connecting device, the threads rotate to cause the connection part to be loosened once so that the pipeline generates a leakage phenomenon, and further certain influence is generated on hemodialysis.
Disclosure of Invention
The invention aims to solve the problems that the existing pipeline connecting device is usually simply screwed through threads, and once the threads rotate in the connecting and using process, the connecting part can be loosened, so that the pipeline is leaked, and further certain influence is caused on hemodialysis.
In order to solve the above problems, the present invention provides a technical solution:
the utility model provides a hemodialysis pipeline connecting device, includes a mount pad, be provided with a coupling mechanism on the mount pad, it is provided with two positioning mechanism, two to be the symmetry form on the inside corresponding coupling mechanism's of mount pad the one end that positioning mechanism kept away from mutually all runs through the corresponding lateral wall of mount pad and extends to the mount pad outer and a pulling mechanism of equal fixedly connected with, be provided with a fixed establishment on coupling mechanism's the position on the lateral wall of one side wherein of mount pad, four stop gear of matrix form fixedly connected with are close to on the lateral wall of mount pad one side to coupling mechanism, coupling mechanism's inside is provided with a sealing mechanism, one side that coupling mechanism kept away from the mount pad and the mount pad are kept away from a pipeline fixed establishment of equal fixedly connected with on one side lateral wall of coupling mechanism.
As preferred, coupling mechanism includes a spread groove, the spread groove is seted up on the lateral wall of mount pad one of them side, the one end that the spread groove is close to the notch is the rectangle setting, the one end that the spread groove is close to the tank bottom is coniform setting, the notch of spread groove runs through and has seted up a first through-hole, sliding connection has one and spread groove assorted connecting block in the spread groove, the wherein one end of connecting block runs through the drill way of first through-hole and extends to in the first through-hole, the other end of connecting block runs through the notch of spread groove and extends to the mount pad outer and a connecting seat of fixedly connected with, run through on the connecting block and seted up a second through-hole, the wherein one end drill way through connection seat setting of second through-hole, the other end drill way of second through.
Preferably, the two positioning mechanisms respectively comprise a positioning hole, the two positioning holes are symmetrically arranged on opposite groove walls of the connecting groove close to the groove opening, a positioning groove is arranged on the opposite side wall of the connecting block corresponding to the two positioning holes, an annular groove is arranged on the inner hole wall of each positioning hole, an annular block is slidably connected in each annular groove, a spring is fixedly connected on the side wall of the side, far away from one side, of each annular block, one end, far away from the annular block, of each spring is respectively abutted against the groove wall of the annular groove of the game, the inner annular walls of the two annular blocks penetrate through the groove openings of the corresponding annular grooves and extend into the positioning holes, a positioning rod is fixedly sleeved on each inner annular wall of the two annular blocks in the positioning holes, and one opposite end of each positioning rod sequentially penetrates through the hole opening of the corresponding positioning hole and the groove opening of the corresponding positioning groove and extends into the positioning groove, and one ends of the two positioning rods, which are far away from each other, penetrate through corresponding orifices of the positioning holes respectively and extend out of the mounting seat.
Preferably, the two pulling mechanisms respectively comprise a fixing plate, the fixing plates are respectively and fixedly connected to one ends of the two positioning rods, which are located outside the mounting seat, pulling blocks are fixedly connected to the side walls, away from one side of the positioning rods, of the fixing plates, pulling holes are formed in the two pulling blocks in a penetrating mode, and a pulling ring is movably sleeved in each pulling hole.
Preferably, the fixing mechanism comprises two fixing holes, the two fixing holes are arranged on the connecting seat in a parallel penetrating mode, two threaded holes are formed in the mounting seat corresponding to the two fixing hole positions in a penetrating mode, one end hole opening of each threaded hole is communicated with the corresponding two positioning holes respectively, a threaded groove is formed in the wall of the positioning rod corresponding to the two threaded hole positions, a bolt is connected into each threaded groove in a threaded mode, and one end of each bolt sequentially penetrates through the threaded holes and the corresponding fixing holes and extends out of the connecting seat.
Preferably, four stop gear all includes a gag lever post, four the gag lever post is the matrix form fixed connection on the connecting seat is close to the lateral wall of mount pad one side, corresponds four seted up four spacing grooves on the mount pad lateral wall of gag lever post position, four the one end that the connecting seat was kept away from to the gag lever post all runs through the notch of spacing groove and extends to the spacing inslot.
As preferred, sealing mechanism includes a seal groove, first seal ring and the second seal ring that is the annular setting, the seal groove is seted up in the drill way department that first through-hole is close to spread groove one side, first seal ring fixed connection is in the seal groove, the inner ring wall of first seal ring runs through the notch of seal groove and extends to in the first through-hole and offset with the connecting block, second seal ring fixed connection is on the one end cell wall that the spread groove is coniform setting, second seal ring's inner ring wall is the setting that offsets with one section lateral wall that the connecting block is located the spread groove.
Preferably, the two pipeline fixing mechanisms comprise connectors, the connectors are respectively fixedly connected to the side wall, far away from one side of the mounting seat, of the connecting seat and the side wall, far away from one side of the connecting seat, of the mounting seat, and the connectors are all sleeved with a pipeline.
The invention has the beneficial effects that:
1. the invention relates to a hemodialysis pipeline connecting device, which is provided with a mounting seat, a connecting groove, a first through hole, a connecting block, a connecting seat, a second through hole, a positioning groove, an annular block, a spring, positioning rods, a fixing plate, a pulling block, a pulling hole and a pulling ring.
2. The invention relates to a hemodialysis pipeline connecting device, which is characterized in that fixing holes, threaded grooves and bolts are arranged, after a connecting block is positioned, two bolts are respectively aligned with the two fixing holes and pushed inwards to abut against orifices of the threaded holes, and then the bolts are rotated to be simultaneously in threaded connection with the threaded holes and the threaded grooves, so that a positioning rod and a connecting seat can be simultaneously fixed, and the leakage of a connecting part caused by misoperation of personnel is avoided.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a side sectional view of the present invention;
FIG. 2 is a front sectional view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic side view of the connecting socket of the present invention;
fig. 5 is an enlarged schematic view of a portion a of fig. 1 according to the present invention.
In the figure:
1. a mounting seat;
2. a connecting mechanism; 21. connecting grooves; 22. a first through hole; 23. connecting blocks; 24. a connecting seat; 25. a second through hole;
3. a positioning mechanism; 31. positioning holes; 32. positioning a groove; 33. an annular groove; 34. a ring block; 35. a spring; 36. positioning a rod;
4. a pulling mechanism; 41. a fixing plate; 42. pulling the block; 43. hole drawing; 44. a pull ring;
5. a fixing mechanism; 51. a fixing hole; 52. a threaded hole; 53. a thread groove; 54. a bolt;
6. a limiting mechanism; 61. a limiting rod; 62. a limiting groove;
7. a sealing mechanism; 71. a sealing groove; 72. a first sealing gasket; 73. a second sealing gasket;
8. a pipeline fixing mechanism; 81. a connector; 82. a pipeline.
The specific implementation mode is as follows:
as shown in fig. 1 to 5, the following technical solutions are adopted in the present embodiment:
a hemodialysis pipeline connecting device comprises a mounting seat 1, a connecting mechanism 2 is arranged on the mounting seat 1, two positioning mechanisms 3 are symmetrically arranged in the mounting seat 1 corresponding to the connecting mechanism 2, the ends far away from the two positioning mechanisms 3 penetrate through the corresponding side wall of the mounting seat 1 and extend out of the mounting seat 1, and are fixedly connected with a pulling mechanism 4, a fixing mechanism 5 is arranged on the side wall of one side of the mounting seat 1 corresponding to the connecting mechanism 2, four limiting mechanisms 6 are fixedly connected on the side wall of the connecting mechanism 2 close to one side of the mounting seat 1 in a matrix shape, a sealing mechanism 7 is arranged in the connecting mechanism 2, a pipeline fixing mechanism 8 is fixedly connected on the side wall of the connecting mechanism 2 far away from the mounting seat 1 and the side wall of the mounting seat 1 far away from the connecting mechanism 2, when in use, fix a position just 2 to connecting through positioning mechanism 3 for coupling mechanism 2 offsets with sealing mechanism 7 all the time, avoids producing not hard up, and rethread fixed establishment 5 is connected just 2 again to positioning mechanism 3 surplus simultaneously, avoids can causing the junction to reveal because of personnel's error operation.
Wherein, the connecting mechanism 2 comprises a connecting groove 21, the connecting groove 21 is arranged on the side wall of one side of the mounting seat 1, one end of the connecting groove 21 close to the notch is arranged in a rectangular shape, one end of the connecting groove 21 close to the groove bottom is arranged in a conical shape, the notch of the connecting groove 21 is provided with a first through hole 22 in a penetrating way, the connecting groove 21 is connected with a connecting block 23 matched with the connecting groove 21 in a sliding way, one end of the connecting block 23 is provided with a hole of the first through hole 22 in a penetrating way and extends into the first through hole 22, the other end of the connecting block 23 is provided with a connecting seat 24 in a penetrating way and extends out of the mounting seat 1 and is fixedly connected with the connecting seat 24, the connecting block 23 on the connecting seat 24 is aligned with the connecting groove 21 and pushed in by the connecting seat 24, the hole of the second through hole 25 is provided with the, when the connecting block 23 completely enters the connecting groove 21, an end of the connecting block 23 remote from the connecting seat 24 extends into the first through hole 22, so that the first through hole 22 communicates with the second through hole 25.
Wherein, two locating mechanisms 3 include a locating hole 31, two locating holes 31 are symmetrically arranged on the relative slot wall of the connecting slot 21 near the slot opening, the relative side wall of the connecting block 23 corresponding to the two locating holes 31 is provided with a locating slot 32, the inner hole wall of two locating holes 31 is provided with an annular slot 33, two annular slots 33 are connected with an annular block 34 in a sliding way, the side wall of the two annular blocks 34 far away from one side is fixedly connected with a spring 35, one end of the two springs 35 far away from the annular block 34 is respectively abutted against the slot wall of the annular slot 33 of the chess, the inner annular wall of the two annular blocks 34 penetrates through the slot opening of the corresponding annular slot 33 and extends into the locating hole 31, the inner annular wall of the two annular blocks 34 in the locating hole 35 is fixedly sleeved with a locating rod 36, the opposite ends of the two locating rods 36 sequentially penetrate through the hole of the corresponding locating hole 31 and the slot opening of the locating slot 32 and, the ends of the two positioning rods 36, which are far away from each other, respectively penetrate through the corresponding orifices of the positioning holes 31 and extend out of the mounting base 1, the notches of the positioning grooves 32 coincide with the orifices of the positioning holes 31, and then the pull ring 44 is loosened, so that the annular block 34 drives the positioning rods 36 to enter the positioning grooves 32 under the thrust of the spring 35 to position the connecting block 24.
Wherein, two pulling mechanism 4 all include a fixed plate 41, two fixed plate 41 respectively fixed connection are in two locating levers 36 and lie in the one end outside mount pad 1, two fixed plate 41 keep away from equal fixedly connected with one on the lateral wall of locating lever 36 one side and draw piece 42, two draw all run through on piece 42 and have seted up a trompil 43, a pull ring 44 has been cup jointed in two trompil 43 equal activities, pull ring 44 can stimulate through the trompil 43 and draw piece 42 and fixed plate 41 and remove, make pull ring 44 can stimulate fixed plate 41 and remove to the direction of keeping away from mount pad 1 one side.
Wherein, the fixing mechanism 5 includes two fixing holes 51, the two fixing holes 51 are opened on the connecting seat 24 in a parallel manner, two threaded holes 52 are opened on the mounting seat 1 corresponding to the positions of the two fixing holes 51, one end opening of the two threaded holes 52 is respectively communicated with the two positioning holes 31, a threaded groove 53 is opened on the rod wall of the positioning rod 36 corresponding to the positions of the two threaded holes 52, a bolt 54 is connected with the inside of the two threaded grooves 53 in a threaded manner, one end of each of the two bolts 54 sequentially penetrates through the threaded holes 52 and the fixing holes 51 and extends out of the connecting seat 24, the two bolts 54 are respectively aligned with the two fixing holes 51 and are pushed into the fixing holes 51 to be abutted against the opening of the threaded hole 52, at this time, the bolt 54 is rotated, so that the bolt 54 is simultaneously in threaded connection with the threaded holes 52 and the threaded grooves 53, the positioning rod 36 and the connecting seat 24 can be, the looseness of the connection part is avoided.
Wherein, four stop gear 6 all include a gag lever post 61, four gag lever posts 61 are matrix form fixed connection on connecting seat 24 is close to the lateral wall of 1 one side of mount pad, four spacing grooves 62 have been seted up on the 1 lateral wall of mount pad that corresponds four gag lever posts 61 positions, four gag lever posts 61 keep away from the one end of connecting seat 24 and all run through the notch of spacing groove 62 and extend to the spacing inslot 62, align and push gag lever post 61 and spacing groove 62 on the connecting seat 24, angle when can guaranteeing connecting block 23 and get into spread groove 21, the alignment of fixed orifices 51 with screw hole 52 has been guaranteed.
Wherein, sealing mechanism 7 includes a seal groove 71 that is the annular setting, first seal ring 72 and second seal ring 73, seal groove 71 is seted up in the first through-hole 22 and is close to the drill way department of spread groove 21 one side, first seal ring 72 fixed connection is in seal groove 71, the inner ring wall of first seal ring 72 runs through the notch of seal groove 71 and extends to in first through-hole 22 and offsets with connecting block 23, second seal ring 73 fixed connection is on the one end cell wall that the coniform set up at spread groove 21, the inner ring wall of second seal ring 73 is offset with one section lateral wall that connecting block 23 is located the spread groove 21 and sets up, connecting block 24 all the time with first seal ring 72, second seal ring 73 closely offsets, seal the junction.
Wherein, two pipeline fixed establishment 8 all include a connector 81, and two connectors 81 are fixed connection respectively on connecting seat 24 keeps away from 1 one side of mount pad and mount pad 1 and keeps away from the lateral wall of connecting seat 24 one side, all has cup jointed a pipeline 82 on two connectors 81, connects the pipeline 82 of the usefulness of hemodialysis.
The using state of the invention is as follows: the invention relates to a hemodialysis pipeline connecting device, when in use, firstly, a fixed plate 41 is pulled by a pull ring 44 to move towards the direction far away from one side of an installation seat 1, the fixed plate 41 drives one end of a positioning rod 36 positioned in a connecting groove 21 to be separated from the connecting groove 21, then a limiting rod 61 and a connecting block 23 on the connecting seat 24 are respectively aligned with a limiting groove 62 and the connecting groove 21, then the connecting seat 24 is pushed towards the installation seat 1 until the connecting block 24 completely enters the connecting groove 21, at the moment, the notch of the positioning groove 32 is coincided with the orifice of a positioning hole 31, then the pull ring 44 is loosened, so that an annular block 34 drives the positioning rod 36 to enter the positioning groove 32 under the pushing force of a spring 35 to position the connecting block 24, so that the connecting block 24 is always tightly abutted against a first sealing washer 72 and a second sealing washer 73 to seal the connecting position, and then two bolts 54 are respectively aligned with, and push to the fixed orifices 51 to offset with the drill way of screw hole 52, at this moment rotate bolt 54 again for bolt 54 is simultaneously with screw hole 52, thread groove 53 threaded connection, can be simultaneously fixed locating lever 36, with connecting seat 24, avoids the junction to produce to become flexible.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. A hemodialysis pipeline connecting device is characterized by comprising a mounting seat (1), wherein a connecting mechanism (2) is arranged on the mounting seat (1), two positioning mechanisms (3) are symmetrically arranged on the positions, corresponding to the connecting mechanism (2), in the mounting seat (1), one ends, far away from each other, of the two positioning mechanisms (3) penetrate through the corresponding side wall of the mounting seat (1), extend out of the mounting seat (1) and are fixedly connected with a pulling mechanism (4), a fixing mechanism (5) is arranged on the position, close to the side wall on one side of the mounting seat (1), of the connecting mechanism (2), four limiting mechanisms (6) are fixedly connected in a matrix manner on the side wall on one side of the mounting seat (1), a sealing mechanism (7) is arranged in the connecting mechanism (2), and one side of the connecting mechanism (2) far away from the mounting seat (1) and one side wall of the mounting seat (1) far away from the connecting mechanism (2) are fixedly connected with a pipeline fixing mechanism (8).
2. A hemodialysis line connection device as set forth in claim 1, wherein: the connecting mechanism (2) comprises a connecting groove (21), the connecting groove (21) is arranged on the side wall of one side of the mounting seat (1), one end of the connecting groove (21) close to the groove opening is in a rectangular shape, one end of the connecting groove (21) close to the groove bottom is in a conical shape, the groove opening of the connecting groove (21) is penetrated and provided with a first through hole (22), the connecting groove (21) is internally connected with a connecting block (23) matched with the connecting groove (21) in a sliding manner, one end of the connecting block (23) penetrates through the hole opening of the first through hole (22) and extends into the first through hole (22), the other end of the connecting block (23) penetrates through the groove opening of the connecting groove (21) and extends to the outside of the mounting seat (1) and is fixedly connected with a connecting seat (24), the connecting block (23) is penetrated and provided with a second through, an orifice at one end of the second through hole (25) penetrates through the connecting seat (24), and an orifice at the other end of the second through hole (25) is communicated with the first through hole (22).
3. A hemodialysis line connection device as set forth in claim 1, wherein: two positioning mechanisms (3) respectively comprise a positioning hole (31), the two positioning holes (31) are symmetrically arranged on the opposite groove walls of a connecting groove (21) close to the groove opening, a positioning groove (32) is respectively arranged on the opposite side walls of a connecting block (23) corresponding to the two positioning holes (31), an annular groove (33) is respectively arranged on the inner hole walls of the two positioning holes (31), an annular block (34) is respectively connected in the two annular grooves (33) in a sliding manner, a spring (35) is fixedly connected on the side wall of one side, far away from the two annular blocks (34), one end, far away from the annular block (34), of each spring (35) is respectively abutted against the groove wall of the annular groove (33) of the game, and the inner annular wall of each annular block (34) penetrates through the groove opening of the corresponding annular groove (33) and extends into the positioning hole (31), two locating rods (36) are fixedly sleeved on the inner annular wall of the annular block (34) located in the locating hole (35), one opposite ends of the two locating rods (36) sequentially penetrate through the hole openings of the corresponding locating holes (31) and the notches of the locating grooves (32) and extend into the locating grooves (32), and the other ends, far away from the locating rods (36), of the two locating rods respectively penetrate through the corresponding hole openings of the locating holes (31) and extend out of the mounting seat (1).
4. A hemodialysis line connection device as set forth in claim 1, wherein: two pulling mechanism (4) all include one fixed plate (41), two fixed plate (41) fixed connection respectively is located the outer one end of mount pad (1) at two locating levers (36), two equal fixedly connected with one on the lateral wall of locating lever (36) one side is kept away from in fixed plate (41) draws piece (42), two draw all run through on piece (42) and seted up one and draw hole (43), two draw equal activity in hole (43) and cup jointed a pull ring (44).
5. A hemodialysis line connection device as set forth in claim 1, wherein: fixing mechanism (5) include two fixed orificess (51), two fixed orificess (51) are run through and set up on connecting seat (24) in the form of being parallel, correspond two run through on mount pad (1) of fixed orifices (51) position and seted up two screw holes (52), two wherein one end drill way of screw hole (52) is linked together with two locating holes (31) respectively, corresponds two a thread groove (53) have all been seted up on locating lever (36) the pole wall of screw hole (52) position, two equal threaded connection has a bolt (54) in thread groove (53), two wherein one end of bolt (54) all runs through screw hole (52) and fixed orifices (51) in proper order and extends to outside connecting seat (24).
6. A hemodialysis line connection device as set forth in claim 1, wherein: four stop gear (6) all include a gag lever post (61), four gag lever post (61) are matrix form fixed connection and correspond four on connecting seat (24) are close to the lateral wall of mount pad (1) one side four spacing groove (62), four have been seted up on mount pad (1) lateral wall that gag lever post (61) position one end that connecting seat (24) were kept away from in gag lever post (61) all runs through the notch of spacing groove (62) and extends to in spacing groove (62).
7. A hemodialysis line connection device as set forth in claim 1, wherein: sealing mechanism (7) are including a seal groove (71), first seal ring (72) and second seal ring (73) that are the annular setting, seal groove (71) are seted up and are close to the drill way department of spread groove (21) one side in first through-hole (22), first seal ring (72) fixed connection is in seal groove (71), the interior rampart of first seal ring (72) runs through the notch of seal groove (71) and extends to in first through-hole (22) and offsets with connecting block (23), second seal ring (73) fixed connection is on one end cell wall that coniform set up in spread groove (21), the interior rampart of second seal ring (73) is the setting that offsets with a section lateral wall that connecting block (23) are located spread groove (21).
8. A hemodialysis line connection device as set forth in claim 1, wherein: two pipeline fixed establishment (8) all include a connector (81), two connector (81) fixed connection respectively is kept away from mount pad (1) one side and mount pad (1) on connecting seat (24) and is kept away from the lateral wall of connecting seat (24) one side, two all cup jointed a pipeline (82) on connector (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911155783.XA CN110917421B (en) | 2019-11-22 | 2019-11-22 | Hemodialysis pipeline connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911155783.XA CN110917421B (en) | 2019-11-22 | 2019-11-22 | Hemodialysis pipeline connecting device |
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| CN110917421A true CN110917421A (en) | 2020-03-27 |
| CN110917421B CN110917421B (en) | 2022-09-02 |
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| GB9016746D0 (en) * | 1989-08-03 | 1990-09-12 | Nitto Kohki Co | Double-pipe pipe coupling |
| EP0881421A2 (en) * | 1997-05-27 | 1998-12-02 | Armaturenfabrik Hermann Voss GmbH + Co. | Plug coupling for pressurised fluid systems |
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| CN110917421B (en) | 2022-09-02 |
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