CN218943998U

CN218943998U - Blood flow direction judging device

Info

Publication number: CN218943998U
Application number: CN202222791169.6U
Authority: CN
Inventors: 麦浩然; 黄雪芳; 孔耀中; 肖观清; 朱兆林
Original assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Current assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-05-02
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a blood flow direction judging device, comprising: the left connecting pipe is provided with a left connecting port at the left end; the left end of the right connecting pipe is connected with the right end of the right connecting pipe, the right end of the right connecting pipe is provided with a right connecting port, and a blood flow channel is formed between the left connecting pipe and the right connecting pipe; the utility model can conveniently, simply, intuitively and accurately observe the blood flow direction, reduce the occurrence probability of blood recirculation and improve the operation efficiency of medical staff.

Description

Blood flow direction judging device

Technical Field

The utility model relates to a medical instrument, in particular to a blood flow direction judging device.

Background

For hemodialysis patients, a vascular access is required each time a hemodialysis treatment is performed, and when the vascular access is formed, the blood direction needs to be judged, and the current judging mode generally judges the arteriovenous end of an internal fistula through an internal fistula operation chart or palpation, and in the arteriovenous end judging mode of palpation judging the internal fistula, the side with more intense pulsation is taken as an arterial end, the side with weaker pulsation is taken as a venous end, and blood flows from the arterial end to the venous end. The arteriovenous fistula puncture needle punctures a needle at the arterial end to draw blood, and punctures a needle at the venous end to return blood, so that hemodialysis treatment is completed.

When a patient cannot provide an operation drawing and the internal fistula artery and vein end pulsation is almost the same, the current clinical medical staff has the problem that the internal fistula artery and vein end cannot be judged easily. If the blood flow direction is judged incorrectly, the arteriovenous puncture needle punctures and draws blood at the venous end of the internal fistula, and the arterial end punctures and returns blood, so that the blood can form recirculation in the extracorporeal circulation of the hemodialysis, the dialysis treatment effect is reduced, the extracorporeal circulation of the hemodialysis is seriously concentrated, and thrombus is formed and the pipeline is blocked.

Disclosure of Invention

The present utility model is directed to a blood flow direction determining device, which solves one or more of the technical problems of the prior art, and at least provides a beneficial choice or creation condition.

The utility model solves the technical problems as follows:

a blood flow direction determiner comprising: the left connecting pipe is provided with a left connecting port at the left end; the left end of the right connecting pipe is connected with the right end of the right connecting pipe, the right end of the right connecting pipe is provided with a right connecting port, and a blood flow channel is formed between the left connecting pipe and the right connecting pipe; and one end of the indicating sheet is connected between the left connecting pipe and the right connecting pipe, and the other end of the indicating sheet extends into the blood flow channel.

The technical scheme has at least the following beneficial effects: when the blood flow guiding device is used, the left connecting port at the left end of the left connecting pipe and the right connecting port at the right end of the right connecting pipe can be connected to a peripheral pipeline structure, blood flows into the blood flow channel from the left connecting port or the right connecting port and correspondingly flows outwards from the right connecting port or the left connecting port, and when blood flows in the blood flow channel, the generated thrust pushes the indicating piece to swing to the downstream side and be attached to the inner wall of the blood flow channel, so that the blood flow direction can be conveniently, simply, intuitively and accurately observed, the occurrence probability of blood recycling is reduced, and the operation efficiency of medical staff is improved.

As a further improvement of the technical scheme, the indicating piece comprises a connecting section and an indicating section which are connected with each other, a folding line is arranged between the connecting section and the indicating section, the connecting section is connected between the left connecting pipe and the right connecting pipe, and the indicating section is positioned in the blood flow channel. The connecting section of the indicating piece is fixed between the left connecting pipe and the right connecting pipe, and the indicating section plays a main swing indicating role, and because the connecting section and the indicating section are provided with folding lines, the indicating section is easier to bend and swing along the folding line under the thrust action of blood, and is attached to the inner wall of the blood flow channel, so that the indicating effect is further improved.

As a further improvement of the technical scheme, the left connecting pipe and the right connecting pipe are detachably connected. The left connecting pipe and the right connecting pipe can be directly assembled with each other, the indicating piece can be conveniently fixed, and the production convenience is improved.

As a further improvement of the technical scheme, the inner side of the right end of the left connecting pipe is provided with an annular step, the inner side of the left end of the right connecting pipe is provided with a connecting neck, and the connecting neck tightly presses the connecting section in the annular step. The connecting neck is inserted into the annular step to be matched and connected with the annular step, so that the left connecting pipe and the right connecting pipe are connected with each other, the connecting neck tightly presses and fixes the connecting section in the annular step, and the positioning of the indicating sheet is realized.

As a further improvement of the above technical solution, an end of the connecting section away from the indicating section is bent in a direction approaching the connecting neck and extends to an outer side of the connecting neck. The one end bending of instruction section is kept away from to the linkage segment for the linkage segment forms a connection structure of L type, utilizes this connection structure can conveniently set up whole instruction piece and advance the location on the connecting neck, and when connecting neck and annular step mutually support and connect, has increased the area of contact of linkage segment with connecting neck, annular step, further improves the stability fixed to the linkage segment.

As a further improvement of the technical scheme, the left connecting pipe comprises a left guide section and a left advection section which are sequentially connected from left to right, the inner diameter of the left guide section is gradually reduced to the right, and the right connecting pipe is connected to the right end of the left advection section. When blood flows in from the left guide section, the flow area of the left guide section gradually reduces to the right, so that the flow speed of the blood entering the left advection section can be accelerated, the thrust to the indicator sheet can be improved, the indicator sheet can swing and be attached to the inner wall of the blood flow channel, and the blood flow guiding device is particularly suitable for patients with weak pulsation at the arterial end and the venous end of internal fistula.

As a further improvement of the above technical solution, the right connecting pipe includes a right guiding section and a right advection section which are sequentially connected from right to right, an inner diameter of the right guiding section gradually decreases leftwards, and the left advection section is connected to a left end of the right advection section. Similarly, when blood flows in from the right guide section, the flow area of the right guide section gradually decreases leftwards, so that the flow speed of the blood entering the right advection section can be increased, the thrust to the indicator sheet can be improved, the indicator sheet can swing and be attached to the inner wall of the blood flow channel, and the blood flow guiding device is particularly suitable for patients with weak pulsation at the arterial end and the venous end of internal fistula.

As a further improvement of the above technical solution, the outer diameter of the left guide section gradually increases rightward, and the outer diameter of the right guide section gradually increases leftward. The pipeline of peripheral hardware can be directly set up on the left end of left guide section and the right-hand member of right guide section, because the external diameter of left guide section and the external diameter of right guide section all have slope direction, can make things convenient for the connection of pipeline.

As a further improvement of the technical scheme, the left connecting port and the right connecting port are both provided with threaded structures. The pipeline of peripheral hardware accessible threaded connection cooperation is connected to left connector and right connector department, and connection stability is higher.

As a further improvement of the technical scheme, the left connecting pipe and the right connecting pipe are made of plastic or glass. The plastic or glass material can better maintain the internal shape of the blood flow channel, so that the indicator piece can swing and indicate blood flow, and is beneficial to direct observation from outside.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the utility model, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic view of the overall internal structure of the present utility model;

fig. 2 is an enlarged partial schematic view of a of fig. 1.

In the accompanying drawings: 100-left connecting pipe, 110-left guiding section, 200-right connecting pipe, 210-connecting neck, 220-right guiding section, 300-indicating piece, 310-connecting section, 320-indicating section.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, the blood flow direction determining device includes a left connection tube 100, a right connection tube 200, and an indication sheet 300, wherein a left connection port is provided at a left end of the left connection tube 100, a left end of the right connection tube 200 is connected to a right end of the right connection tube 200, a right connection port is provided at a right end of the right connection tube 200, a blood flow channel is formed between the left connection tube 100 and the right connection tube 200, one end of the indication sheet 300 is connected between the left connection tube 100 and the right connection tube 200, an end of the indication sheet 300 may be fixed between the left connection tube 100 and the right connection tube 200 by adhesion, or may be directly clamped and fixed by the left connection tube 100 and the right connection tube 200, and the other end of the indication sheet 300 extends into the blood flow channel.

As can be seen from the above description, when in use, the left connection port at the left end of the left connection tube 100 and the right connection port at the right end of the right connection tube 200 can be connected to the external pipeline structure, and the blood flows into the blood flow channel from the left connection port or the right connection port, and flows out from the right connection port or the left connection port correspondingly, when the blood flows in the blood flow channel, the generated thrust pushes the indicator 300 to swing to the downstream side and to be attached to the inner wall of the blood flow channel, in order to directly observe the indicator 300 from the outside, the left connection tube 100 and the right connection tube 200 are made of transparent materials, and the indicator 300 can be made of non-sticky water and easily observed colors such as white plastic sheets, hydrophobic paper sheets, hydrophobic cloth sheets, etc., so that the bleeding direction can be conveniently, simply, intuitively and accurately observed, the occurrence probability of blood recirculation is reduced, and the operating efficiency of medical staff is improved.

One end of the indicator sheet 300 is used for connection and fixation, while the other end is required to be located in a blood flow channel formed by the left connecting tube 100 and the right connecting tube 200, in this embodiment, the indicator sheet 300 includes a connecting section 310 and an indicator section 320 that are connected to each other, a fold line is disposed between the connecting section 310 and the indicator section 320, the connecting section 310 is connected between the left connecting tube 100 and the right connecting tube 200, the connecting section 310 may be directly fixed on the left connecting tube 100 and/or the right connecting tube 200 by bonding or the like, or directly clamped between the left connecting tube 100 and the right connecting tube 200, and the indicator section 320 is located in the blood flow channel. The connecting section 310 of the indicating piece 300 is fixed between the left connecting pipe 100 and the right connecting pipe 200, and the indicating section 320 plays a main swing indicating role, and because the connecting section 310 and the indicating section 320 are provided with folding lines, the indicating section 320 is easier to bend and swing along the folding line under the thrust action of blood, and is attached to the inner wall of the blood flow channel, so that the indicating effect is further improved.

In the production, after the indicator 300 is installed inside the left connecting pipe 100 and the right connecting pipe 200, the left connecting pipe 100 and the right connecting pipe 200 may be directly connected integrally, and in this embodiment, the left connecting pipe 100 and the right connecting pipe 200 are detachably connected. The left and

right connection pipes

100 and 200 can be directly assembled with each other, so that the indication sheet 300 can be conveniently fixed, and the convenience of production can be improved.

The left connecting pipe 100 and the right connecting pipe 200 can be disassembled and assembled by means of threaded connection, snap connection or interference fit connection, and the connecting section 310 of the indicating piece 300 is clamped and fastened between the left connecting pipe 100 and the right connecting pipe 200 for convenience, in this embodiment, an annular step is arranged on the inner side of the right end of the left connecting pipe 100, a connecting neck 210 is arranged on the inner side of the left end of the right connecting pipe 200, and the connecting neck 210 compresses the connecting section 310 in the annular step. The left connecting pipe 100 and the right connecting pipe 200 can be connected with each other by inserting the connecting neck 210 into the annular step in a matched manner, and the connecting neck 210 compresses and fixes the connecting section 310 into the annular step, so that the positioning of the indicating piece 300 is realized.

In order to facilitate positioning the indicator 300 on the connecting neck 210 and improve the positioning effect on the connecting segment 310, in this embodiment, an end of the connecting segment 310 away from the indicator segment 320 is bent toward the connecting neck 210 and extends to the outside of the connecting neck 210. The connecting section 310 is bent away from one end of the indicating section 320, so that the connecting section 310 forms an L-shaped connecting structure, the whole indicating sheet 300 can be conveniently erected on the connecting neck 210 by using the connecting structure to perform preset positioning, and when the connecting neck 210 is mutually matched and connected with the annular step, the contact area between the connecting section 310 and the connecting neck 210 and the contact area between the connecting neck and the annular step are increased, and the stability of fixing the connecting section 310 is further improved.

In practical application, if the blood flow rate is slow, the thrust to the indicator 300 is also less, and in addition to selecting a lighter material for the indicator 300, in order to ensure that enough thrust can be generated to the indicator 300, in this embodiment, the flow rate of blood in the left connecting tube 100 is improved, specifically, the left connecting tube 100 includes a left guiding section 110 and a left advection section sequentially connected from left to right, the inner diameter of the left guiding section 110 gradually decreases to the right, the left end of the left guiding section 110 is a left connection port, in practical application, the ratio of the flow area at the left end of the left guiding section 110 to the flow area at the right end of the left guiding section 110 is between 1.1 and 1.2, and the right connecting tube 200 is connected to the right end of the left advection section. When blood flows in from the left guide section 110, the flow rate of the blood entering the left advection section can be accelerated along with the gradual rightward reduction of the flow area of the left guide section 110, so that the thrust to the indicator 300 can be improved, the indicator 300 can swing and be attached to the inner wall of the blood flow channel, and the blood flow channel is particularly suitable for patients with weak pulsation at the arterial end and the venous end of internal fistula.

In the above embodiment, the flow rate of blood flowing from the left connection port is increased, and similarly, in this embodiment, the flow rate of blood flowing from the right connection port is increased, specifically, the right connection tube 200 includes a right guiding section 220 and a right advection section connected in sequence from right to left, the inner diameter of the right guiding section 220 is gradually reduced to left, and the left advection section is connected to the left end of the right advection section. Similarly, when blood flows in from the right guiding section 220, the flow area of the right guiding section 220 gradually decreases leftwards, the right end of the right guiding section 220 is the right connecting port, in practical application, the ratio of the flow area of the right end of the right guiding section 220 to the flow area of the left end of the right guiding section 220 is between 1.1 and 1.2, so that the flow rate of the blood entering the right advection section can be accelerated, the thrust to the indicator 300 can be improved, the indicator 300 can swing and be attached to the inner wall of the blood flow channel more favorably, and the device is particularly suitable for patients with weak pulsation at the arterial end and the venous end of internal fistula.

As an embodiment of connecting the peripheral pipeline to the left and right connectors, the interconnection may be achieved by an interference fit of the pipeline, specifically, the outer diameter of the left guide section 110 gradually increases rightward, and the outer diameter of the right guide section 220 gradually increases leftward. The peripheral pipeline can be directly sleeved on the left end of the left guide section 110 and the right end of the right guide section 220, and the pipeline can be conveniently connected due to the inclined guide of the outer diameter of the left guide section 110 and the outer diameter of the right guide section 220.

In the second embodiment, the external pipeline is connected to the left connecting port and the right connecting port, and the connection can be realized through the threaded fit of the pipeline, specifically, the left connecting port and the right connecting port are both provided with threaded structures, internal threads can be arranged on the inner side of the left connecting port and the inner side of the right connecting port, and external threads can be arranged on the outer side of the right connecting port on the inner side of the left connecting port. The pipeline of peripheral hardware accessible threaded connection cooperation is connected to left connector and right connector department, and connection stability is higher.

In any of the above embodiments, the left connecting pipe 100 and the right connecting pipe 200 are made of transparent materials, so as to facilitate direct observation from outside, and further, the left connecting pipe 100 and the right connecting pipe 200 are made of plastic or glass materials. The plastic or glass material better maintains the internal shape of the blood flow channel so that the indicator sheet 300 can swing and indicate blood flow and facilitate direct observation from the outside.

While the preferred embodiments of the present utility model have been illustrated and described, the present utility model is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present utility model, and these are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims

1. Blood flow direction judgement ware, its characterized in that: comprising the following steps:

a left connecting pipe (100) with a left connecting port at the left end;

a right connecting pipe (200) with a left end connected to a right end of the right connecting pipe (200), wherein a right connecting port is arranged at the right end of the right connecting pipe (200), and a blood flow channel is formed between the left connecting pipe (100) and the right connecting pipe (200);

and an indicator sheet (300) one end of which is connected between the left connecting tube (100) and the right connecting tube (200), and the other end of the indicator sheet (300) extends into the blood flow channel.

2. The blood flow direction determiner of claim 1, wherein: the indicator sheet (300) comprises a connecting section (310) and an indicator section (320) which are connected with each other, wherein a folding line is arranged between the connecting section (310) and the indicator section (320), the connecting section (310) is connected between the left connecting pipe (100) and the right connecting pipe (200), and the indicator section (320) is positioned in the blood flow channel.

3. The blood flow direction determiner of claim 2, wherein: the left connecting pipe (100) and the right connecting pipe (200) are detachably connected.

4. A blood flow direction determiner according to claim 3, characterized in that: an annular step is arranged on the inner side of the right end of the left connecting pipe (100), a connecting neck (210) is arranged on the inner side of the left end of the right connecting pipe (200), and the connecting neck (210) tightly presses the connecting section (310) in the annular step.

5. The blood flow direction determiner of claim 4, wherein: one end of the connecting section (310) far away from the indicating section (320) is bent towards the direction approaching the connecting neck (210) and extends to the outer side of the connecting neck (210).

6. The blood flow direction determiner of claim 1, wherein: the left connecting pipe (100) comprises a left guide section (110) and a left advection section which are sequentially connected from left to right, the inner diameter of the left guide section (110) is gradually reduced to the right, and the right connecting pipe (200) is connected to the right end of the left advection section.

7. The blood flow direction determiner of claim 6, wherein: the right connecting pipe (200) comprises a right guide section (220) and a right advection section which are sequentially connected from right to left, the inner diameter of the right guide section (220) is gradually reduced leftwards, and the left advection section is connected to the left end of the right advection section.

8. The blood flow direction determiner of claim 7, wherein: the outer diameter of the left guide section (110) gradually increases to the right, and the outer diameter of the right guide section (220) gradually increases to the left.

9. The blood flow direction determiner of claim 1, wherein: the left connecting port and the right connecting port are both provided with threaded structures.

10. The blood flow direction determiner of claim 1, wherein: the left connecting pipe (100) and the right connecting pipe (200) are made of plastic or glass.