CN219090488U

CN219090488U - Hemodialysis device for medical treatment

Info

Publication number: CN219090488U
Application number: CN202222309604.7U
Authority: CN
Inventors: 林武; 查艳
Original assignee: Guizhou Provincial Peoples Hospital
Current assignee: Guizhou Provincial Peoples Hospital
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-05-30
Anticipated expiration: 2032-08-31

Abstract

The utility model provides a hemodialysis ware for medical treatment, includes the dialyzer main part, and the outer wall equidistant dialysis pipe that is connected with of dialyzer main part, dialyzer main part both ends threaded connection has the end cover, and the one end that two end covers kept away from each other all is connected with the blood pipe, is provided with the regulating spindle along radial direction in the blood pipe, is fixed with the regulating plate on the regulating spindle, the flow of blood pipe is different when the regulating plate rotates different predetermined angles, the regulating plate rotate to with end cover terminal surface parallel time with blood pipe inner tube assorted, the one end of regulating spindle runs through blood pipe inner wall and extends to blood pipe external connection have locking mechanical system, and locking mechanical system has the structure that makes the regulating plate lock when the regulating plate rotates to predetermined angle for the rotation center. The utility model provides a medical hemodialysis device, which can be used for locking the internal flow of a blood inlet tube after adjusting the internal flow of the blood inlet tube, so as to avoid or reduce the condition of flow increase or attenuation of the internal flow of the blood inlet tube.

Description

Hemodialysis device for medical treatment

Technical Field

The utility model relates to the technical field of hemodialysis equipment, in particular to a hemodialysis device for medical treatment.

Background

Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. The method comprises the steps of draining in-vivo blood to the outside of the body, passing through a dialyzer consisting of innumerable hollow fibers, wherein the blood and electrolyte solution (dialysate) with similar concentration of the body are in and out of the hollow fibers, and carrying out substance exchange by the dispersion, ultrafiltration, adsorption and convection principles to remove metabolic wastes in the body and maintain the balance of the electrolyte and acid and alkali; at the same time, the whole process of removing excessive water from the body and reinfusion of the purified blood is called hemodialysis.

In clinical medicine, blood flow is usually regulated by setting the rotational speed of a blood pump, and the blood flow is regulated by setting the rotational speed of the blood pump, and the blood flows into a patient through an arterial kettle and a blood ventilator. The blood conduit connected with the device has no flow limiting function, and once the rotation speed of the blood pump is suddenly increased and is in a runaway state, the blood flow is also suddenly increased, so that the risk of membrane rupture of the hemodialysis device is easily caused, and even the safety of a patient is directly endangered.

In this regard, chinese patent discloses a hollow fiber hemodialysis machine with application number CN202022521564.3, and the hollow fiber hemodialysis machine is configured with a limit groove and a seal ring, so that an operator can engage the seal ring with the limit groove while rotating the outer cover, thereby making the sealing performance of the outer cover better during installation, and avoiding the leakage problem; and simultaneously, the size of the flow inside the blood inlet tube is adjusted by matching the first through hole and the second through hole.

However, the above patent still has the following disadvantages: this hollow fiber hemodialysis ware does not have the function of locking when going on adjusting into the inside flow of blood pipe size, and when blood pump rotational speed suddenly increases under the out of control state, makes the overlap degree increase of first through-hole and second through-hole easily for the risk of rupture of membranes appears in the dialyzer easily, influences patient's life safety even.

Disclosure of Invention

The utility model aims at: the utility model provides a hemodialysis ware for medical treatment for solve the problem among the prior art, not only make the adjustable and current limiting effect of blood flow in the blood pipe, can lock after adjusting the blood flow size in the blood pipe moreover, avoid or reduce the condition that the blood flow of blood pipe suddenly appears and arouse the risk of dialyser main part rupture of membranes, thereby can maximize protection dialyser main part, and then ensure patient's safety.

In order to achieve the above purpose, the following technical scheme is adopted: the utility model provides a hemodialysis ware for medical treatment, includes the dialyzer main part, the equidistant dialysis pipe that is connected with of dialyzer main part outer wall, dialyzer main part both ends threaded connection has the end cover, two the one end that the end cover kept away from each other all is connected with the blood pipe, one of them be provided with the regulating spindle along radial direction in the blood pipe, be fixed with the regulating plate on the regulating spindle, the flow of blood pipe is different when the regulating plate rotates different predetermined angles, the regulating plate rotate to with end cover terminal surface parallel time with blood pipe inner tube assorted, the one end of regulating spindle runs through blood pipe inner wall and extends to blood pipe external connection and have locking mechanical system, locking mechanical system has the structure that makes the regulating plate lock when the regulating spindle rotates to predetermined angle for rotation center.

Preferably, the locking mechanism comprises a rotary disc, a fixed block, a steel ball, an elastic piece and a rotating part, one end of the adjusting shaft penetrates through the inner wall of the blood conduit and extends to the outside of the blood conduit to be connected with the rotary disc, the rotary disc is provided with annular grooves along the circumferential surface, the notches of the annular grooves are uniformly provided with locking grooves,

the fixing block is fixedly arranged on the outer wall of the blood conduit, a guide hole is formed in the fixing block, the guide hole is formed in the direction of the axis of the blood conduit, a steel ball is arranged in the guide hole, one side of the steel ball abuts against the lock groove, the other side of the steel ball is positioned in the guide hole, a push rod is connected in the guide hole in a sliding mode, one end of the push rod abuts against the other side of the steel ball, an elastic piece is arranged in the guide hole, one end of the elastic piece abuts against the other end of the push rod, the other end of the elastic piece abuts against the bottom of the guide hole, and one side, far away from the blood conduit, of the rotary disc is connected with a rotating part.

Preferably, the locking mechanism comprises a turbine and a worm, one end of the adjusting shaft penetrates through the inner wall of the blood conduit and extends to the outside of the blood conduit to be connected with the turbine, a symmetrical bracket is fixed on the outer wall of the blood conduit, the worm is connected between the two brackets, the worm and the turbine are in meshed transmission, and one end of the worm penetrates through the bracket to be connected with the adjusting part.

Preferably, a first sealing ring is arranged on the adjusting shaft positioned in the wall of the blood conduit.

Preferably, the dialyser further comprises annular baffles symmetrically arranged on the outer wall of the dialyser body, the adjacent end faces of the end covers are respectively attached to the end faces of the adjacent annular baffles after the end covers are fixed, and a second sealing ring is arranged at the attachment position of the end covers and the annular baffles.

Preferably, the hole bottom of the guide hole is provided with a threaded hole, the threaded hole extends to the outside of the fixed block, an adjusting bolt is connected to the threaded hole in a threaded mode, and one end of the adjusting bolt extends into the guide hole and abuts against the other end of the elastic piece.

Preferably, the outer surface of the rotating part is provided with a first anti-skid pattern.

Preferably, the outer surface of the adjusting part is provided with a second anti-skid pattern.

Preferably, the outer wall of the blood conduit is provided with a first protection cover, the rotary disc and the fixed block are located in an inner cavity formed by the first protection cover and the outer wall of the blood conduit, and the rotary part and the adjusting bolt are located outside the first protection cover.

Preferably, the outer wall of the blood conduit is provided with a second protective cover, the turbine, the worm and the bracket are positioned in an inner cavity formed by the second protective cover and the outer wall of the blood conduit, and the adjusting part is positioned outside the second protective cover.

The utility model has the beneficial effects that:

compared with the prior art, the hemodialysis device for medical treatment has the advantages that through the arrangement of the locking mechanism, the blood flow in the blood conduit can be regulated and has the effect of limiting the flow, the blood flow in the blood conduit can be locked after being regulated, the risk of membrane rupture of the main body of the hemodialysis device caused by sudden flow increase of the blood flow of the blood conduit is avoided or reduced, and therefore the main body of the hemodialysis device can be protected to the maximum extent, and the safety of a patient is further guaranteed; the locking mechanism can not cause the blood conduit and the structure connected with the blood conduit to rotate relatively when adjusting the flow and locking, so that the flow inside the blood conduit is further improved, and the condition that the structure connected with the blood conduit is twisted relatively is avoided.

Drawings

Fig. 1 is a schematic view of a hemodialysis machine for medical treatment according to the present utility model.

Fig. 2 is an enlarged schematic view of the internal structure at a in fig. 1.

Fig. 3 is a schematic view showing the internal structure of a hemodialysis machine blood catheter for medical treatment according to the present utility model.

Fig. 4 is a schematic view showing another locking mechanism of the hemodialysis machine for medical treatment according to the present utility model.

Fig. 5 is an enlarged view of the internal structure at B in fig. 4.

In the figure, 1-dialyzer body, 2-dialysis tube, 3-end cap, 4-blood conduit, 5-adjusting plate, 6-locking mechanism, 61-turn table, 62-fixed block, 63-steel ball, 64-elastic member, 65-turning part, 66-annular groove, 67-locking groove, 68-guiding hole, 69-ejector pin, 610-turbine, 611-worm, 612-bracket, 613-adjusting part, 7-annular baffle, 8-adjusting bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-5, a hemodialysis machine for medical treatment includes a dialyzer body 1, a dialysis tube 2 is connected to an outer wall of the dialyzer body 1 at equal intervals, end caps 3 are connected to two ends of the dialyzer body 1 in a threaded manner, two ends of the end caps 3, which are far away from each other, are connected to a blood conduit 4, an adjusting shaft is arranged in one blood conduit 4 along a radial direction, that is, the blood conduit 4 is a blood inlet end, an adjusting plate 5 is fixed on the adjusting shaft, the flow rate of the blood conduit 4 is different when the adjusting plate 5 rotates at different preset angles, when the adjusting plate 5 rotates to be parallel to an end face of the end cap 3, the inner wall of the blood conduit 4 is penetrated by one end of the adjusting shaft and extends to the outer side of the blood conduit 4, and a locking mechanism 6 is connected to the outer side of the blood conduit 4, and the locking mechanism 6 has a structure that enables the adjusting plate 5 to rotate to a preset angle with the adjusting shaft as a rotation center.

In this embodiment, the locking mechanism 6 comprises a rotary disk 61, a fixed block 62, a steel ball 63, an elastic member 64 and a rotating part 65, one end of an adjusting shaft penetrates through the inner wall of the blood conduit 4 and extends to the outside of the blood conduit 4 to be connected with the rotary disk 61, the rotary disk 61 is provided with annular grooves 66 along the circumferential surface, the annular grooves 66 are uniformly provided with locking grooves 67, namely, the annular arrays of the locking grooves 67 are arranged at the notches of the annular grooves 66, the fixed block 62 is fixedly arranged on the outer wall of the blood conduit 4, a guide hole 68 is arranged in the fixed block 62, the guide hole 68 is arranged along the axial direction of the blood conduit 4, the guide hole 68 points to the adjacent locking groove 67, the steel ball 63 is arranged in the guide hole 68, one side of the steel ball 63 is propped against the locking groove 67, the other side of the steel ball 63 is positioned in the guide hole 68, a push rod 69 is connected in a sliding manner, one end of the push rod 69 is propped against the other side of the steel ball 63, an elastic piece 64 is arranged in the guide hole 68, one end of the elastic piece 64 is propped against the other end of the ejector rod 69, the other end of the elastic piece 64 is propped against the bottom of the guide hole 68, wherein the elastic piece 64 is a spring, one side of the turntable 61 far away from the blood conduit 4 is connected with a rotating part 65, when in use, the rotating part 65 rotates to drive the turntable 61 to rotate so as to drive the adjusting shaft to rotate, the adjusting plate 5 rotates by a preset angle, and then the internal flow of the blood conduit 4 is adjusted, during the rotation of the turntable 61, the notch of the steel ball 63 positioned in the annular groove 66 rolls relatively according to a preset track due to the annular groove 66, when the steel ball 63 rolls from the notch of the annular groove 66 to the locking groove 67, the pushing condition occurs in the guide hole 68 at a part of the steel ball 63, and when each time the steel ball 63 rolls into the locking groove 67 and is matched with the locking, the condition of flow increase of the internal flow of the blood conduit 4 is avoided or reduced, thereby effectively playing the roles of limiting flow and protecting the dialyzer main body 1, when the flow is required to be regulated again, the rotating part 65 is rotated again, the elastic force of the elastic piece 64 is overcome, the steel ball 63 is partially or completely retracted into the guide hole 68, and meanwhile, the steel ball 63 relatively rolls into the designated locking groove 67 according to the preset track of the annular groove 66, so that the locking function is realized on the basis of regulating the flow and limiting speed, and the accident caused by the membrane rupture risk of the dialyzer main body is avoided.

In this embodiment, the locking mechanism 6 includes a worm wheel 610 and a worm 611, one end of the adjusting shaft penetrates through the inner wall of the blood conduit 4 and extends to the outside of the blood conduit 4 to be connected with the worm wheel 610, a symmetrical bracket 612 is fixed on the outer wall of the blood conduit 4, the worm 611 is connected between the two brackets 612, the worm 611 and the worm wheel 610 are in meshed transmission, one end of the worm 611 penetrates through the bracket 612 to be connected with an adjusting part 613, the worm 611 is driven to rotate by the rotating adjusting part 613, so that the worm wheel 610 rotates and then drives the adjusting shaft to rotate, the adjusting plate 5 rotates by a predetermined angle, the size of the flow in the blood conduit 4 is adjusted, the adjusting plate 5 rotates to the predetermined angle by the principle of unidirectional transmission of the worm wheel and the worm, and then is locked, so that the situation of flow increase of the flow in the blood conduit 4 is avoided or reduced, the dialyzer main body can be effectively protected, the risk of rupture of the membrane of the dialyzer main body 1 is avoided, and the life safety of a patient is further ensured.

As a preferred embodiment of the above-described embodiments, in order to improve sealing performance and avoid leakage, a first sealing ring is provided on the adjusting shaft located in the wall of the blood conduit 4.

In order to improve the sealing performance and avoid leakage, the preferred embodiment of the embodiment further comprises annular baffles 7 symmetrically arranged on the outer wall of the dialyzer body 1, the two end faces close to the end faces of the end cover 3 are respectively attached to the end faces of the adjacent annular baffles 7 after the end cover 3 is fixed, and a second sealing ring is arranged at the attachment position of the end cover 3 and the annular baffles 7.

In order to facilitate adjustment of the locking pressure; or further locking and fixing, the turntable 61 is prevented from rotating after the internal flow of the blood conduit 4 is fixed, the hole bottom of the guide hole 68 is provided with a threaded hole, the threaded hole extends to the outside of the fixed block 62, the threaded hole is connected with an adjusting bolt 8 in a threaded manner, one end of the adjusting bolt 8 extends into the guide hole 68 and abuts against the other end of the elastic piece 64, and the elastic force of the elastic piece 64 is controlled through the adjusting bolt 8, so that the effect of adjusting pressure or locking and fixing is achieved.

Wherein, in order to play a role of skid resistance in use, the outer surface of the rotating part 65 is provided with a first skid-proof pattern; the outer surface of the adjusting part 613 is provided with a second anti-slip pattern.

Wherein, in order to avoid the impurity such as dust entering the locking mechanism to influence the performance, a first protecting cover is arranged on the outer wall of the blood conduit 4, the rotary table 61 and the fixed block 62 are positioned in the inner cavity formed by the first protecting cover and the outer wall of the blood conduit 4, and the rotating part 65 and the adjusting bolt 8 are positioned outside the first protecting cover, so as to facilitate the adjustment; the outer wall of the blood conduit 4 is provided with a second protective cover, the turbine 610, the worm 611 and the bracket 612 are positioned in an inner cavity formed by the second protective cover and the outer wall of the blood conduit 4, and the adjusting part 613 is positioned outside the second protective cover, so as to facilitate adjustment.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a hemodialysis ware for medical treatment, includes dialyzer main part (1), dialyzer main part (1) outer wall equidistant is connected with dialysis tube (2), dialyzer main part (1) both ends threaded connection has end cover (3), two end that end cover (3) kept away from each other all is connected with blood pipe (4), its characterized in that: one of the blood catheters (4) is internally provided with an adjusting shaft along the radial direction, an adjusting plate (5) is fixed on the adjusting shaft, the flow of the blood catheters (4) is different when the adjusting plate (5) rotates by different preset angles, the adjusting plate (5) rotates to be matched with the inner tube of the blood catheters (4) when being parallel to the end face of the end cover (3), one end of the adjusting shaft penetrates through the inner wall of the blood catheters (4) and extends to the outside of the blood catheters (4) to be connected with a locking mechanism (6), and the locking mechanism (6) is provided with a structure for locking when the adjusting plate (5) rotates to the preset angle by taking the adjusting shaft as a rotation center.

2. A hemodialysis machine for medical treatment according to claim 1, wherein: the locking mechanism (6) comprises a rotary table (61), a fixed block (62), a steel ball (63), an elastic piece (64) and a rotating part (65), one end of the adjusting shaft penetrates through the inner wall of the blood conduit (4) and extends to the outside of the blood conduit (4) to be connected with the rotary table (61), the rotary table (61) is provided with annular grooves (66) along the circumferential surface, the notches of the annular grooves (66) are uniformly provided with locking grooves (67),

the fixing block (62) is fixedly arranged on the outer wall of the blood conduit (4), a guide hole (68) is formed in the fixing block (62), a steel ball (63) is arranged in the guide hole (68) along the axis direction of the blood conduit (4), one side of the steel ball (63) abuts against the inside of the locking groove (67), the other side of the steel ball (63) is positioned in the guide hole (68), a push rod (69) is connected in the guide hole (68) in a sliding mode, one end of the push rod (69) abuts against the other side of the steel ball (63), an elastic piece (64) is arranged in the guide hole (68), one end of the elastic piece (64) abuts against the other end of the push rod (69), the other end of the elastic piece (64) abuts against the bottom of the guide hole (68), and one side, far away from the blood conduit (4), of the rotary table (61) is connected with a rotary part (65).

3. A hemodialysis machine for medical treatment according to claim 1, wherein: the locking mechanism (6) comprises a turbine (610) and a worm (611), one end of the adjusting shaft penetrates through the inner wall of the blood conduit (4) and extends to the outside of the blood conduit (4) to be connected with the turbine (610), a symmetrical support (612) is fixed on the outer wall of the blood conduit (4), the worm (611) is connected between the two supports (612), the worm (611) and the turbine (610) are in meshed transmission, and one end of the worm (611) penetrates through the support (612) to be connected with the adjusting part (613).

4. A hemodialysis machine for medical treatment according to claim 2 or 3, characterized in that: a first sealing ring is arranged on the adjusting shaft positioned in the wall of the blood conduit (4).

5. A hemodialysis machine for medical treatment according to claim 2 or 3, characterized in that: the device also comprises annular baffles (7) symmetrically arranged on the outer wall of the dialyzer main body (1), wherein after the end covers (3) are fixed, the close end faces of the end covers are respectively attached to the end faces of the adjacent annular baffles (7), and a second sealing ring is arranged at the attachment position of the end covers (3) and the annular baffles (7).

6. A hemodialysis machine for medical treatment according to claim 2, wherein: the bottom of the guide hole (68) is provided with a threaded hole, the threaded hole extends to the outside of the fixed block (62), an adjusting bolt (8) is connected to the threaded hole in a threaded mode, and one end of the adjusting bolt (8) extends into the guide hole (68) to abut against the other end of the elastic piece (64).

7. A hemodialysis machine for medical treatment according to claim 2, wherein: the outer surface of the rotating part (65) is provided with a first anti-skid pattern.

8. A hemodialysis machine for medical treatment according to claim 3, wherein: the outer surface of the adjusting part (613) is provided with a second anti-skid pattern.

9. A hemodialysis machine for medical treatment according to claim 6, wherein: the outer wall of the blood conduit (4) is provided with a first protection cover, the rotary table (61) and the fixed block (62) are located in an inner cavity formed by the first protection cover and the outer wall of the blood conduit (4), and the rotary part (65) and the adjusting bolt (8) are located outside the first protection cover.

10. A hemodialysis machine for medical treatment according to claim 3, wherein: the outer wall of the blood conduit (4) is provided with a second protective cover, the turbine (610), the worm (611) and the bracket (612) are positioned in an inner cavity formed by the second protective cover and the outer wall of the blood conduit (4), and the adjusting part (613) is positioned outside the second protective cover.