CN213698241U

CN213698241U - ECMO and CRRT pipeline current limiter

Info

Publication number: CN213698241U
Application number: CN202022236607.3U
Authority: CN
Inventors: 林文威; 明建青; 杨桂锋; 曾峻; 冯楚权; 尹旋; 吕运好
Original assignee: QINGYUAN PEOPLE'S HOSPITAL
Current assignee: QINGYUAN PEOPLE'S HOSPITAL
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-07-16
Anticipated expiration: 2030-10-10

Abstract

The utility model provides a ECMO and CRRT pipeline current limiter belongs to medical equipment technical field, which comprises a fixed base, the fixing base include the cross section for the U type seat of U type and with the fixed lug of the top body coupling of U type seat one end, penetrate the drive screw post in U type seat one side, at the one end of drive screw post and the drive knob body coupling that is located the outside of U type seat, the other end of drive screw post is located the inside of U type seat, still be provided with the movable block in the inside of U type seat, movable block and drive screw post threaded connection, in the top of movable block and current-limiting lug body coupling. The controllable flow limiter is suitable for limiting the flow of various pipelines, flexibly limits the flow to achieve the flow required by auxiliary treatment, can adjust the negative pressure of the left heart decompression tube according to the negative pressure before the pump so as to prevent the pipeline adherence, unsmooth drainage, tube blockage, atrial muscle injury, excessive suction of left heart blood and other complications, and can regulate the input pressure and the output pressure of the CRRT by limiting the flow to ensure the normal operation of the CRRT.

Description

ECMO and CRRT pipeline current limiter

Technical Field

The utility model belongs to the technical field of medical equipment, especially, relate to a ECMO and CRRT pipeline current limiter.

Background

The ECMO complex mode VV-A means that A tubes are required to be added for assisting circulation when heart pump function failure exists under the auxiliary support of the lung, and the VA-V means that V tubes are required to be added for assisting the lung when the severe lung function failure exists under the auxiliary support of the lung and the lung; the left heart decompression tube has the lung hair pressure which is increased due to the exaggeration of the left heart extravasated blood and the increase of the pressure of the left heart, thereby affecting the lung function, and clinically, the left atrium implantation drainage tube is generally connected in parallel at the ECMO blood leading end. The incidence of AKI is significantly increased in ECMO patients, with 50% of patients receiving CRRT therapy, which is usually clinically concatenated to ECMO.

To regulate the input pressure, it is common to 1) add various types of V-tube, a-tube parallel ECMO loops. 2) A4F, 6F, 8F and 10F drainage tube is arranged in the left chamber and connected in parallel with the blood leading end of the ECMO, and the power of a centrifugal pump is utilized to lead out the left heart blood, thereby playing the role of pressure reduction. 3) Adding a long and thin extension pipe at the CRRT blood leading end or connecting a tee joint at the ECMO output end of the CRRT input end to control the CRRT input flow through an adjusting three-way valve so as to solve the problem of overhigh CRRT input pressure, connecting the CRRT output end in front of an ECMO pump and connecting a tee joint at the ECMO input end of the CRRT output end to control the CRRT output speed through an adjusting three-way valve so as to solve the problem of overhigh CRRT output pressure; the current limiter is needed to be used in the loop, the current limiter is limited by using a pipeline clamp or a blood vessel clamp in the prior art, and the current limiting by using the pipeline clamp or the blood vessel clamp has certain limitation, so that the size of the auxiliary cardiopulmonary flow is not easy to control, and the treatment effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model aims to provide an ECMO and CRRT pipeline current limiter. The utility model discloses a defect that the poor supplementary cardiopulmonary flow size of unobstructed one-level of patency that prior art adopted pipeline pliers or vascular forceps current-limiting to lead to is wayward is solved to the current limiter, the utility model discloses a controllable type current limiter is suitable for the current-limiting of multiple type pipeline, and nimble current-limiting reaches the adjunctie therapy demand flow, can adjust left heart decompression pipe negative pressure size in order to prevent pipeline adherence, the drainage is not smooth, stifled pipe, atrium muscle damage, complications such as excessive suction of left heart blood according to the preceding negative pressure of pump, through current-limiting regulation and control CRRT input pressure and output pressure, ensures CRRT's normal operating.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a ECMO and CRRT pipeline current limiter, includes the fixing base, the fixing base include the cross section for the U type seat of U type and with the fixed lug of the top body coupling of U type seat one end U type seat one side penetrates drive screw post one end and be located the drive knob body coupling in the outside of U type seat, the other end of drive screw post is located the inside of U type seat still is provided with the movable block, the movable block with drive screw post threaded connection the top of movable block and current limiting lug body coupling.

Preferably, the bottom of the moving block is integrally connected to a moving block base.

Preferably, the width of the moving block is the same as that in the U-shaped seat groove, and the width of the moving block base is larger than that in the U-shaped seat groove.

Preferably, the fixing lug is a block, and the fixing lug is integrally connected with the plugging end of the U-shaped seat.

Preferably, the length and width of the fixing projection are the same as those of the blocking end of the U-shaped seat.

Preferably, the current limiting protrusion includes two current limiting protrusions respectively located at two sides above the moving block, and a length of the current limiting protrusion is smaller than a length of the moving block.

Preferably, the U-shaped seat is in threaded connection with the driving threaded column.

Preferably, the shape of the driving knob is selected from one of a circle, a square and a petal shape.

The working principle is as follows: the ECMO and CRRT pipelines are placed in a space between the fixed lug and the current-limiting lug and above the U-shaped seat, the driving knob is rotated and connected with the driving threaded column, the movable block positioned on the driving threaded column and the current-limiting lug connected with the movable block move towards the direction of the fixed lug, the pipeline positioned between the fixed lug and the current-limiting lug is clamped tightly to realize the current-limiting effect, and after the use, the driving knob is rotated reversely, so that the movable block moves to the original position, and the pipeline is taken out.

The utility model discloses there is following beneficial effect:

the utility model discloses a controllable type current limiter is suitable for the current-limiting of multiple type pipeline, and nimble current-limiting reaches the adjunctie therapy demand flow, can adjust left heart decompression pipe negative pressure size in order to prevent that pipeline adherence, drainage are not smooth, stifled pipe, atrium muscle damage, left heart blood excessively suctions and other complications before the pump, through current-limiting regulation and control CRRT input pressure and output pressure, ensures CRRT's normal operating.

Drawings

For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a top view of a flow restrictor for ECMO and CRRT piping;

FIG. 2 is a cross-sectional view taken along line D-D of FIG. 1;

FIG. 3 is a bottom view of the configuration of a flow restrictor for ECMO and CRRT piping;

FIG. 4 is a front view of the structure of a flow restrictor for ECMO and CRRT conduits;

fig. 5 is a cross-sectional view taken along line E-E of fig. 4.

In the figure: 1. the device comprises a driving knob, 2, a driving threaded column, 3, a U-shaped seat, 4, a moving block, 5, a current limiting lug, 6, a moving block base, 7 and a fixing lug.

Detailed Description

In order to make the technical solutions in the present invention better understood, the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Aiming at the defects of the prior art: need use the current limiter in ECMO and the CRRT pipeline loop, prior art adopts pipeline pliers or blood vessel pliers current-limiting, uses pipeline pliers or blood vessel pliers current-limiting to have certain limitation, thereby the difficult control of supplementary cardiopulmonary flow size influences treatment, consequently the utility model provides an ECMO and CRRT pipeline current limiter has solved above-mentioned technical problem.

The present invention will be described in further detail below with reference to examples.

The first embodiment is as follows: referring to the accompanying drawings 1-5, an ECMO and CRRT pipeline current limiter comprises a fixed seat, wherein the fixed seat comprises a U-shaped seat 3 with a U-shaped cross section and a fixed lug 7 integrally connected with the upper part of one end of the U-shaped seat 3, a driving threaded column 2 penetrates into one side of the U-shaped seat 3, one end of the driving threaded column 2 is integrally connected with a driving knob 1 positioned on the outer side of the U-shaped seat 3, the other end of the driving threaded column 2 is positioned inside the U-shaped seat 3, a moving block 4 is further arranged inside the U-shaped seat 3, the moving block 4 is in threaded connection with the driving threaded column 2, and the upper part of the moving block 4 is integrally connected with a current limiting lug 5.

In this embodiment, the bottom of the moving block 4 is integrally connected to a moving block base 6; the width of the moving block 4 is the same as that of the groove of the U-shaped seat 3, and the width of the moving block base 6 is larger than that of the groove of the U-shaped seat 3.

In this embodiment, the fixing protrusion 7 is a single piece, and the fixing protrusion 7 is integrally connected with the plugging end of the U-shaped seat 3. The length and the width of the fixed lug 7 are consistent with those of the plugging end of the U-shaped seat 3.

In this embodiment, the current limiting protrusion 5 includes two current limiting protrusions respectively located on two sides above the moving block 4, and the length of the current limiting protrusion 5 is smaller than the length of the moving block 4.

In this embodiment, the U-shaped seat 3 is also in threaded connection with the driving threaded column 2.

In this embodiment, the shape of the driving knob 1 is selected to be a petal shape.

Example two: referring to the accompanying drawings 1-5, an ECMO and CRRT pipeline current limiter comprises a fixed seat, wherein the fixed seat comprises a U-shaped seat 3 with a U-shaped cross section and a fixed lug 7 integrally connected with the upper part of one end of the U-shaped seat 3, a driving threaded column 2 penetrates into one side of the U-shaped seat 3, one end of the driving threaded column 2 is integrally connected with a driving knob 1 positioned on the outer side of the U-shaped seat 3, the other end of the driving threaded column 2 is positioned inside the U-shaped seat 3, a moving block 4 is further arranged inside the U-shaped seat 3, the moving block 4 is in threaded connection with the driving threaded column 2, and the upper part of the moving block 4 is integrally connected with a current limiting lug 5.

In this embodiment, the shape of the driving knob 1 is selected to be square.

Example three: referring to the accompanying drawings 1-5, an ECMO and CRRT pipeline current limiter comprises a fixed seat, wherein the fixed seat comprises a U-shaped seat 3 with a U-shaped cross section and a fixed lug 7 integrally connected with the upper part of one end of the U-shaped seat 3, a driving threaded column 2 penetrates into one side of the U-shaped seat 3, one end of the driving threaded column 2 is integrally connected with a driving knob 1 positioned on the outer side of the U-shaped seat 3, the other end of the driving threaded column 2 is positioned inside the U-shaped seat 3, a moving block 4 is further arranged inside the U-shaped seat 3, the moving block 4 is in threaded connection with the driving threaded column 2, and the upper part of the moving block 4 is integrally connected with a current limiting lug 5.

In this embodiment, the shape of the drive knob 1 is selected to be circular.

In the first to third embodiments, the working principle is as follows: the ECMO and CRRT pipelines are placed between the fixed lug 7 and the current-limiting lug 5 and in a space above the U-shaped seat 3, the driving knob 1 is rotated, the driving knob 1 is connected with the driving threaded column 2, the movable block 4 positioned on the driving threaded column 2 and the current-limiting lug 5 connected with the movable block 4 can move towards the direction of the fixed lug 7, the pipeline positioned between the fixed lug 7 and the current-limiting lug 5 is clamped tightly to realize the current-limiting effect, after the use, the driving knob 1 is rotated reversely, so that the movable block 4 moves to the original position, and the pipeline is taken out.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An ECMO and CRRT pipeline current limiter which is characterized in that: the device comprises a fixed seat, wherein the fixed seat comprises a U-shaped seat (3) with a U-shaped cross section and a fixed lug (7) integrally connected with the upper part of one end of the U-shaped seat (3), a driving threaded column (2) penetrates into one side of the U-shaped seat (3), one end of the driving threaded column (2) is integrally connected with a driving knob (1) positioned on the outer side of the U-shaped seat (3), the other end of the driving threaded column (2) is positioned inside the U-shaped seat (3), a moving block (4) is further arranged inside the U-shaped seat (3), the moving block (4) is in threaded connection with the driving threaded column (2), and the upper part of the moving block (4) is integrally connected with a current limiting lug (5).

2. An ECMO and CRRT conduit flow restrictor according to claim 1 wherein: the bottom of the moving block (4) is integrally connected with a moving block base (6).

3. An ECMO and CRRT conduit flow restrictor according to claim 2 wherein: the width of the moving block (4) is the same as that of the U-shaped seat (3) in the groove, and the width of the moving block base (6) is larger than that of the U-shaped seat (3) in the groove.

4. An ECMO and CRRT conduit flow restrictor according to claim 1 wherein: the fixing lug (7) is one piece, and the fixing lug (7) is integrally connected with the plugging end of the U-shaped seat (3).

5. An ECMO and CRRT pipeline flow restrictor according to claim 4 wherein: the length and the width of the fixed lug (7) are consistent with those of the plugging end of the U-shaped seat (3).

6. An ECMO and CRRT conduit flow restrictor according to claim 1 wherein: the current limiting lugs (5) are respectively positioned on two sides above the moving block (4), and the length of the current limiting lugs (5) is smaller than that of the moving block (4).

7. An ECMO and CRRT conduit flow restrictor according to claim 1 wherein: the U-shaped seat (3) is in threaded connection with the driving threaded column (2).

8. An ECMO and CRRT conduit flow restrictor according to claim 1 wherein: the shape of the drive knob (1) is selected from one of a circle, a square and a petal shape.