CN216676555U

CN216676555U - Improved external circulation blood path of venous kettle

Info

Publication number: CN216676555U
Application number: CN202122634527.8U
Authority: CN
Inventors: 覃金玉; 陈微; 何艳; 李丽萍; 邓媛; 孔令珍
Original assignee: Liuzhou Municipal Liutie Central Hospital
Current assignee: Liuzhou Municipal Liutie Central Hospital
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-06-07
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses an improved external circulation blood path of a vein kettle, which comprises a vein kettle, wherein the bottom of the vein kettle is movably connected with a connecting cover, and two sides of the bottom of the connecting cover are respectively provided with a communicating pipe and a pulse pressure pipe; the venous pot is characterized in that the top of the venous pot is movably connected with a lower end cover, the top of the lower end cover is movably connected with an upper end cover, a blood path pipe is connected onto the upper end cover, the blood path pipe and the communicating pipe are provided with a flow limiting assembly, and the lower end cover and the upper end cover are detachably connected through a fixing assembly. According to the utility model, the upper end cover connected with the blood pipeline and the lower end cover connected with the filter screen are arranged, the upper end cover and the lower end cover are detachably connected through the fixing component, the lower end cover and the vein kettle body are detachably connected through the threads, so that the filter screen can be quickly replaced by being detached and blocked when the filter screen of the vein kettle is blocked by blood coagulation, and in addition, the flow-limiting component can be arranged to adjust the blood flowing speed and stop the blood flowing.

Description

Improved external circulation blood path of venous kettle

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an improved external circulation blood path of a venous kettle.

Background

Hemodialysis is one of the main kidney replacement treatment methods for patients with renal failure, when hemodialysis is carried out, a doctor firstly establishes a blood vessel passage of a patient, then connects a pre-filled dialyzer and a disposable blood vessel pipe to the blood vessel passage of the patient, establishes extracorporeal circulation to start hemodialysis treatment, and in heparin-free dialysis treatment or CRRT treatment, because of the application of anticoagulants such as heparin and the like or in the continuous hemodialysis treatment process, a filter screen of a venous kettle in a dialysis pipeline often coagulates blood, and blood return cannot be realized when the filter screen is seriously blocked;

chinese utility model patent with publication number CN206612984U discloses an extracorporeal circulation blood circuit with replaceable venous pot, including venous pot, inlet conduit and outlet conduit, the inlet end of venous pot with the inlet conduit is pegged graft, the outlet end of venous pot with the outlet conduit is pegged graft, all be provided with the clamping on inlet conduit and the outlet conduit. Two clamping under the normal condition are opened, when the filter screen takes place to block up, can close the clamping on entry pipe and the export pipe, the vein kettle that the vein kettle more renews is directly taken off, whole operation process is very simple, need not to change whole blood way pipe, avoid the air admission cerini dialyser cerini, the blood loss of patient has been reduced, the vein kettle is common part in the hemodialysis blood pipeline, the hemostatic clamp effect singleness of above-mentioned device, it is convenient inadequately to operate, in addition, the dismantlement of vein kettle is also convenient inadequately, and the grafting mode is not convenient for change many times, for this reason we propose a modified vein kettle extrinsic cycle blood way and be used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an improved external circulation blood path of a venous kettle, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an improved external circulation blood path of a vein pot comprises the vein pot, wherein the bottom of the vein pot is movably connected with a connecting cover, and two sides of the bottom of the connecting cover are respectively provided with a communicating pipe and a pulse pressure pipe;

the top of the venous pot is movably connected with a lower end cover, the top of the lower end cover is movably connected with an upper end cover, the upper end cover is connected with a blood path pipe, the blood path pipe and a communicating pipe are provided with a flow limiting assembly, and the lower end cover and the upper end cover are detachably connected through a fixing assembly;

the middle part of the lower end cover is provided with a channel, two sides of the top of the lower end cover are provided with limiting holes, the outer side of the lower end cover is provided with an annular clamping groove, the lower part of the outer side of the lower end cover is provided with a threaded ring, the lower end cover is in threaded connection with a venous pot through the threaded ring, the bottom of the lower end cover is fixedly connected with a filter screen, and the filter screen is accommodated in the venous pot;

the top of the upper end cover is fixedly provided with a limiting block and is communicated with the blood path tube through the limiting block, the outer side of the upper end cover is provided with a groove in a surrounding manner, the bottom of the upper end cover is fixedly connected with a gasket, the bottom side of the upper end cover is fixedly connected with a limiting rod, and the limiting rod is movably inserted in the limiting hole;

the fixing component is a clamping piece with clamping teeth, the clamping piece simultaneously clamps the lower end cover and the upper end cover, at the moment, the limiting rod is inserted into the limiting hole, the clamping teeth respectively clamp and clamp the clamping groove and the groove, and the gasket abuts against the top of the upper end cover.

Preferably, the fixing assembly comprises two groups of clamping pieces, one end of each clamping piece is a pressing end, the other end of each clamping piece is a connecting end, the connecting ends of the two groups of clamping pieces are rotatably connected through a rotating shaft, a torsion spring is sleeved on the rotating shaft, and two sides of the torsion spring abut against the clamping pieces; each the link tip of clamping piece all is provided with two sets of curved clamp teeth at an interval, and is two sets of the two sets of clamp teeth of clamping piece are just right one by one, and just the fixed subassembly blocks respectively when centre gripping upper end cover and lower end cover simultaneously and presss from both sides groove and recess, at this moment, the torsional spring is in elastic deformation state.

Preferably, the one end fixedly connected with that the clamping piece was kept away from to the clamp tooth sticks up the tail, and is two sets of all be provided with the sawtooth on the clamping piece on the mutual just right side of the tail that sticks up that the clamp tooth is connected, sawtooth on the two mutual butt under the torsional spring natural state.

Preferably, the current limiting assembly comprises a current limiting cover, a fixing cover, a screw rod and a pressing and holding rod, the current limiting assembly is arranged in a cylindrical structure, the side wall of one end of the current limiting cover is movably connected with one end of the fixing cover through a hinge, the bottom side of the other end of the current limiting cover is fixedly connected with a plurality of convex blocks, the top side of the other end of the fixing cover is provided with a plurality of fixing holes, and the other end of the current limiting cover is detachably connected with the other end of the fixing cover in a mode that the convex blocks are movably clamped in the fixing holes; the middle of the bottom of the flow limiting cover is provided with a rectangular through hole, the top of the fixed cover is provided with a through groove, the barrel groove is opposite to and communicated with the through hole, and the barrel groove and the through hole form an accommodating cavity for accommodating a pipeline where the barrel groove is located; the flow limiting cover is characterized in that a threaded hole is formed in the top of the through hole, a screw rod is connected with the threaded hole in a threaded manner, the top of the screw rod extends to the outer side of the flow limiting cover, a rotating rod is fixedly connected to the top of the screw rod, a pressing rod is fixedly connected to the bottom of the screw rod, and the pressing rod is movably accommodated in the through hole.

Preferably, the bottom of the pressing rod is of an arc-shaped structure, the arc center faces the screw rod, and the bottom end of the pressing rod movably extends into the through groove under the action of the screw rod.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model realizes detachable connection between the upper end cover and the lower end cover through the fixing component by arranging the upper end cover connected with a blood pipeline and the lower end cover connected with a filter screen, realizes detachable connection between the lower end cover and a vein kettle body through threads, can replace the blocked filter screen by detaching as soon as possible when the filter screen of the vein kettle is blocked by coagulation, avoids the phenomenon of abnormal blood return caused by the blockage of the filter screen, simultaneously overcomes the problem that a whole set of hemodialysis tube needs to be replaced after the filter screen is blocked in the prior art, has simple detachment and replacement operation of the vein kettle, can quickly realize replacement by only one medical worker, shortens the time for solving the problem of coagulation blockage, on the other hand, can adjust the blood flowing speed and suspend the blood flowing by arranging the flow limiting component, and particularly, the fixing cover is provided with a through groove, and the flow limiting cover is provided with a through hole communicated with the through groove, be equipped with the screw rod in the through-hole and hold the pole with the pressure that the screw rod is connected, utilize screw rod forward and reverse rotation to control and hold the pole to the degree that compresses tightly of blood way pipe and communicating pipe, steerable blood flows into the vein kettle by the blood way pipe on the one hand, and another convenience pauses the blood circulation when changing the filter screen, has improved the security that the device used.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the upper end cap and the lower end cap of the present invention;

FIG. 3 is a schematic view of a fixing member according to the present invention;

FIG. 4 is a schematic view of the overall structure of a current limiting assembly according to the present invention

Fig. 5 is a schematic sectional structure view of the position limiting assembly of the present invention.

In the figure: 1. a venous pot; 2. a lower end cover; 201. a channel; 202. a limiting hole; 203. a clamping groove; 204. a thread ring; 3. an upper end cover; 301. a limiting block; 302. a groove; 303. a gasket; 304. a limiting rod; 4. a blood line tube; 5. a connecting cover; 6. a communicating pipe; 7. a pulse pressure tube; 8. a fixing component; 81. a clamping piece; 82. clamping teeth; 83. tilting the tail; 84. saw teeth; 85. a rotating shaft; 86. a torsion spring; 9. a current limiting assembly; 91. a flow-restricting cover; 92. a bump; 93. a fixed cover; 94. a fixing hole; 95. a hinge; 96. a through groove; 97. a rotating rod; 98. a screw; 99. a threaded hole; 910. a through hole; 911. pressing and holding the rod; 10. and (5) filtering by using a filter screen.

The following detailed description will further illustrate the utility model in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an improved external circulation blood path of a vein pot comprises a vein pot 1, wherein the bottom of the vein pot 1 is movably connected with a connecting cover 5, and two sides of the bottom of the connecting cover 5 are respectively provided with a communicating pipe 6 and a pulse pressure pipe 7.

1 top swing joint of vein kettle has

lower end cover

2, 2 top swing joint of lower end cover has upper end cover 3, be connected with blood way pipe 4 on the upper end cover 3, be provided with current-limiting component 9 on blood way pipe 4 and communicating pipe 6, lower end cover 2 can be dismantled through fixed subassembly 8 with upper end cover 3 and be connected to can dismantle the connected mode and the mode that lower end cover 2 can dismantle connection vein kettle 1 through upper end cover 3 and lower end cover 2 and make lower end cover 2 can dismantle with circulation blood way.

In the utility model, a channel 201 is arranged in the middle of a lower end cover 2, limiting holes 202 are arranged on two sides of the top of the lower end cover 2, an annular clamping groove 203 is arranged on the outer side of the lower end cover 2, a threaded ring 204 is arranged on the lower part of the outer side of the lower end cover 2, the lower end cover 2 is in threaded connection with a venous pot 1 through the threaded ring 204, a filter screen 10 is fixedly connected to the bottom of the lower end cover 2, and the filter screen 10 is accommodated in the venous pot 1; the top of the upper end cover 3 is fixedly provided with a limiting block 301 and is communicated with the blood path tube 4 through the limiting block 301, the outer side of the upper end cover 3 is provided with a groove 302 in a surrounding manner, the bottom of the upper end cover 3 is fixedly connected with a gasket 303, the bottom side of the upper end cover 3 is fixedly connected with a limiting rod 304, and the limiting rod 304 is movably inserted in the limiting hole 202; the fixing component 8 is a clamping piece with clamping teeth 82, and clamps the lower end cover 3 and the upper end cover 2 at the same time, at this time, the limiting rod 304 is inserted in the limiting hole 202, the clamping teeth 82 respectively clamp and clamp the clamping groove 203 and the groove 302, the gasket 303 abuts against the top of the upper end cover 2, and the detachable connection of the lower end cover 2 and the upper end cover 3 is realized through the above manner.

In the utility model, the lower end cover 2 is in threaded connection with the venous pot 1, the filter screen 10 is placed in the venous pot 1 at the moment, then the limiting rod 304 fixedly connected with the bottom of the upper end cover 3 is aligned to the limiting hole 202 inserted on the surface of the lower end cover 2, so as to determine the position between the lower end cover 2 and the upper end cover 3, after connection, the clamping teeth 82 of the fixing component 8 are respectively clamped into the groove 302 of the upper end cover 3 and the clamping groove 203 of the lower end cover 2, and the positions of the upper end cover 3 and the lower end cover 2 can be clamped and fixed; when filter screen 10 takes place the blood coagulation and stops up and need to be changed filter screen 10, open fixed subassembly 8, detach fixed subassembly 8 from upper end cover 3 and lower end cover 2, take out upper end cover 3 and lower end cover 2, dismantle lower end cover 2 and filter screen 10 from vein kettle 1 and replace after that, then with new lower end cover 2 and 1 spiro union of vein kettle shell, reuse fixed subassembly 8 at last and fix upper end cover 3 and lower end cover 2, can realize filter screen 10's change and realize the sealed of vein kettle 1, this mode need not to peg graft, can be convenient for change the filter screen many times, and it is convenient to change.

Preferably, in this embodiment, the fixing assembly 8 includes two sets of clamping pieces 81, one end of each clamping piece 81 is a pressing end, the other end is a connecting end, the connecting ends of the two sets of clamping pieces 81 are rotatably connected through a rotating shaft 85, a torsion spring 86 is sleeved on the rotating shaft 85, and two sides of the torsion spring 86 abut against between the clamping pieces 81; each the link tip of clamping piece 81 all the interval be provided with two sets of curved clamp teeth 82, two sets of clamping piece 81's two sets of clamp teeth 82 are just right one by one, and fixed subassembly 8 is in the clamping groove 203 and recess 302 of block respectively when centre gripping upper end cover 2 and lower end cover 3 simultaneously, at this moment, torsional spring 86 is in elastic deformation state. One end fixedly connected with that the clamping piece 81 is kept away from to the double-layered tooth 82 sticks up the tail 83, and two sets of all be provided with sawtooth 84 on the clamping piece 81 on the mutual just right side of the tail 83 that the clamping piece 82 is connected, sawtooth 84 on the two is mutual butt under torsional spring 86 natural state to increase frictional force, improve the stability of centre gripping.

Furthermore, the current limiting assembly 9 includes a current limiting cover 91, a fixing cover 93, a screw 98 and a pressing and holding rod 911, the current limiting assembly 9 is arranged in a cylindrical structure, a side wall of one end of the current limiting cover 91 is movably connected with one end of the fixing cover 93 through a hinge 95, a bottom side of the other end of the current limiting cover 91 is fixedly connected with a plurality of bumps 92, a top side of the other end of the fixing cover 93 is provided with a plurality of fixing holes 94, and the other end of the current limiting cover 91 is detachably connected with the other end of the fixing cover 93 in a manner that the bumps 92 are movably clamped in the fixing holes 94; a rectangular through hole 910 is formed in the middle of the bottom of the flow limiting cover 91, a through groove 96 is formed in the top of the fixed cover 93, the barrel groove 96 is opposite to and communicated with the through hole 910, and a containing cavity for containing a pipeline where the barrel groove 96 is located is formed between the barrel groove 96 and the through hole 910; a threaded hole 99 is formed in the top of the through hole 910, a screw 98 is connected to the threaded hole 99 through a thread, the top of the screw 98 extends to the outer side of the current limiting cover 91, a rotating rod 97 is fixedly connected to the top of the screw 98, a pressing rod 911 is fixedly connected to the bottom of the screw 98, and the pressing rod 911 is movably accommodated in the through hole 910. Preferably, the bottom of the pressure holding rod 911 is arranged to be in a circular arc structure, the arc center faces the screw 98, and the bottom end of the pressure holding rod 911 movably extends into the through groove 96 under the action of the screw 98.

In the present invention, the flow-limiting assembly 9 is used to control the flow of the blood line, for example, during the replacement of the filter screen 10, the user rotates the rotating rod 97 by hand, so that the arc-shaped pressing rod 911 is screwed into the through hole 910 by the through groove 96, thereby pressing the blood line tube 4 or the communicating tube 6, at which time the blood in the blood line tube 4 and the communicating tube 6 is no longer flowing, and then the filter screen 10 is replaced. In addition, the forward and reverse rotation of the screw 98 controls the degree of the pressing rod 911 against the blood line tube 4 or the communication tube 6, and also controls the flow rate of the blood flowing from the blood line tube 4 into the venous pot 1 and the flow rate of the blood in the communication tube 6, thereby improving the safety of the use of the device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An improved external circulation blood path of a venous pot comprises a venous pot (1), and is characterized in that: the bottom of the venous pot (1) is movably connected with a connecting cover (5), and two sides of the bottom of the connecting cover (5) are respectively provided with a communicating pipe (6) and a pulse pressure pipe (7);

the top of the venous pot (1) is movably connected with a lower end cover (2), the top of the lower end cover (2) is movably connected with an upper end cover (3), the upper end cover (3) is connected with a blood path pipe (4), the blood path pipe (4) and a communicating pipe (6) are provided with a current limiting assembly (9), and the lower end cover (2) and the upper end cover (3) are detachably connected through a fixing assembly (8);

a channel (201) is formed in the middle of the lower end cover (2), limiting holes (202) are formed in two sides of the top of the lower end cover (2), an annular clamping groove (203) is formed in the outer side of the lower end cover (2), a threaded ring (204) is arranged on the lower portion of the outer side of the lower end cover (2), the lower end cover (2) is in threaded connection with the venous pot (1) through the threaded ring (204), a filter screen (10) is fixedly connected to the bottom of the lower end cover (2), and the filter screen (10) is accommodated in the venous pot (1);

the top of the upper end cover (3) is fixedly provided with a limiting block (301), the upper end cover is communicated with the blood channel tube (4) through the limiting block (301), the outer side of the upper end cover (3) is provided with a groove (302) in a surrounding manner, the bottom of the upper end cover (3) is fixedly connected with a gasket (303), the bottom side of the upper end cover (3) is fixedly connected with a limiting rod (304), and the limiting rod (304) is movably inserted in a limiting hole (202);

the fixing component (8) is a clamping piece with clamping teeth (82) and is used for clamping the lower end cover (2) and the upper end cover (3) at the same time, at the moment, the limiting rod (304) is inserted into the limiting hole (202), the clamping teeth (82) are respectively used for clamping the clamping groove (203) and the groove (302), and the gasket (303) abuts against the top of the upper end cover (3).

2. An improved venous kettle external circulation blood circuit as claimed in claim 1 wherein: the fixing component (8) comprises two groups of clamping pieces (81), one end of each clamping piece (81) is a pressing end, the other end of each clamping piece is a connecting end, the connecting ends of the two groups of clamping pieces (81) are rotatably connected through a rotating shaft (85), a torsion spring (86) is sleeved on the rotating shaft (85), and two sides of the torsion spring (86) are abutted between the clamping pieces (81); each the link tip of clamping piece (81) all the interval is provided with two sets of curved clamp teeth (82), and is two sets of clamp teeth (82) of clamping piece (81) are just right one by one, and fixed subassembly (8) centre gripping upper end cover (3) and lower end cover (2) time difference block clamp groove (203) and recess (302) simultaneously, at this moment, torsional spring (86) are in the elastic deformation state.

3. An improved venous kettle external circulation blood circuit as claimed in claim 2 wherein: the clamping teeth (82) are far away from one end of the clamping piece (81) and are fixedly connected with warping tails (83), the clamping piece (81) is provided with two groups of sawteeth (84) on the side faces, opposite to the warping tails (83), connected with the clamping teeth (82), and the sawteeth (84) on the clamping piece and the clamping piece are mutually abutted under the natural state of a torsion spring (86).

4. An improved venous kettle external circulation blood circuit as claimed in claim 1 wherein: the flow limiting device is characterized in that a flow limiting cover (91), a fixing cover (93), a screw rod (98) and a pressing and holding rod (911) are arranged in the flow limiting assembly (9), the flow limiting assembly (9) is arranged in a cylindrical structure, one end of the flow limiting cover (91) is movably connected with one end of the fixing cover (93) through a hinge (95), a plurality of convex blocks (92) are fixedly connected to the bottom side of the other end of the flow limiting cover (91), a plurality of fixing holes (94) are formed in the top side of the other end of the fixing cover (93), and the other end of the flow limiting cover (91) is detachably connected with the other end of the fixing cover (93) in a mode that the convex blocks (92) are movably clamped in the fixing holes (94); a rectangular through hole (910) is formed in the middle of the bottom of the flow limiting cover (91), a through groove (96) is formed in the top of the fixed cover (93), the through groove (96) is opposite to and communicated with the through hole (910), and the through groove (96) and the through hole (910) form an accommodating cavity for accommodating a pipeline where the through groove is located; the top of the through hole (910) is provided with a threaded hole (99), the threaded hole (99) is connected with a screw rod (98) in an internal thread mode, the top of the screw rod (98) extends to the outer side of the current limiting cover (91), the top of the screw rod (98) is fixedly connected with a rotating rod (97), the bottom of the screw rod (98) is fixedly connected with a pressing rod (911), and the pressing rod (911) is movably accommodated in the through hole (910).

5. An improved venous kettle external circulation blood circuit as claimed in claim 4 wherein: the bottom of the pressing and holding rod (911) is arranged to be of an arc-shaped structure, the arc center faces towards the screw rod (98), and the bottom end of the pressing and holding rod (911) movably extends into the through groove (96) under the action of the screw rod (98).