KR20260009928A - Y-type connecting pipe - Google Patents

Abstract

The present invention relates to medicine, particularly to fluid therapy, renal replacement therapy, and gravity-based blood therapy. The Y-connection tubing of the present invention is designed in the form of a Y-connection tubular connector having a connecting branch at each end, wherein the branch is connected to the opposite ends of a tube, each of which is equipped with at least one clamp. One end of the tube has a port with a female adapter, and the other end has a connector port with a male adapter. Two of the tubes can be connected to catheter ports or puncture needles at two vascular access points, and the other tube can be connected to an extracorporeal circuit. The present invention integrates multiple access points into a single outlet and a single inlet, allowing them to be connected to an extracorporeal circuit. Furthermore, it allows for controlling the flow rate and volume of the transferred liquid, reducing the resistance of the liquid, and automatically controlling the pressure within the tubing circuit using a second access point through a single system.

Description

Y-type connecting pipe

The present invention relates to medicine, i.e. to devices for administering drug media to the human body and selecting various media from the human body, in particular to dialysis systems and catheters having different positions or shapes of fluid channels, which can be used in infusion therapy, renal replacement therapy and gravitational surgery to optimize the selection and withdrawal of fluids, blood, its components and preparations.

Y-type for blood treatment system of prior art (patent CN 109475670 A, 15.03.2019, A61K35/14, A61M1/02, A61M1/34, A61M1/36, A61M39/22, B01D21/26, B01D35/00, B01D35/02, B01D37/00, B01D39/00, B01D61/00, B01D61/14, B01D61/18, B01D69/00, B04B11/04, B04B15/06, S12M1/12, C12N5/02, C12N5/078, G01N1/10, G01N33/48) The connector comprises a connector housing defining a connector structure; a first port configured to be directly connected to an output of a separator of a blood processing system; a second port connected to a fluid message to the first port; and a third port connected to the first port, wherein the second port is configured to be connected to a fluid message to the first tube, the first tube is configured to be connected to a fluid message to the second port and to a blood component storage container, the third port is configured to be connected to the second tube, and the second tube is configured to be connected to a fluid message to the third port and to a saline storage container.

Also disclosed is a multi-catheter assembly of the prior art (U.S. 2004092863 A1, May 13, 2004, A61M25/00, A61M25/14), comprising: a first catheter having an outer surface defining a first proximal end, a first distal end (terminating in the first distal end), and at least a first canal extending longitudinally between the first distal opening and the first proximal opening; and a second catheter having a second proximal end, a second distal end terminating in a second distal end, and a second outer surface forming at least a second canal extending longitudinally between the second distal opening and the second proximal opening, wherein the first channel and the second channel are independent of each other to facilitate simultaneous flow in opposite directions; wherein the outer surfaces of the first and second catheters are releasably connected so that the first and second distal ends and the first and second proximal ends can be at least partially separated from each other longitudinally.

The most similar technical solution is a multichannel catheter (US Patent 2012136341 A1, May 31, 2012, A61M25/098, A61M25/14), comprising a catheter stem having a plurality of tubes, each of said plurality of tubes having a proximal end, a distal end, at least one channel extending longitudinally along a longitudinal axis between said proximal and distal ends (at least a portion of each tube passing through at least an inner surface and an outer surface), and at least an inner surface and an outer surface, wherein at least a portion of the inner surface of a first tube is selectively connected to at least a portion of the inner tube by a surface of a second tube along at least a portion of the longitudinal length of the catheter rod.

The main disadvantage of the technical solution described above is that it is impossible to simultaneously connect multiple infusion sources to administer drugs simultaneously, and that simultaneous puncture of two veins is only possible using two separate systems rather than one.

The technical result of the claimed invention is to realize the possibility of combining several access points included in an extracorporeal circuit into a direct single flow and a reverse single flow, and also to variably regulate the linear and volumetric velocity of the liquid flow, to reduce the resistance through the pressure distribution, to automatically regulate the pressure in the line using a second access point through one system, and to reduce the emergency situations of the patient due to alarms of the extracorporeal treatment device.

These technical results are fabricated in the form of a Y-shaped tubular main tee having a Y-shaped connecting line having main pipes connected at both ends, the pipes of the Y-shaped tubular main tee being connected to both ends of the main tube, and at least one clamp being installed at each end. At the other end of one of the main pipes is a port having a female adapter, and a connector having a pin adapter is located at the end of another trunk tube. Two of the trunk tubes are configured to be connected to catheter ports or puncture needles at two vascular access points, and one of the trunk tubes is configured to be connected to an extracorporeal circuit.

In particular, the Y-shaped connecting line is manufactured in the form of a Y-shaped tubular main tee with connecting main pipes at both ends.

Additionally, one of the pipes of the tee is connected to the main tube and has a port with a socket adapter at the other end, the other two pipes of the tee are connected to the main tube and have a connector with a pin adapter at the other end, and all of the main tubes have at least one clamp.

The essence of the present invention is illustrated by drawings showing a special case of the claimed Y-junction line.
Figure 1 illustrates a general appearance of a Y-connection line for extracorporeal treatment.
Figure 2 is a schematic general diagram of an extracorporeal treatment system that extracts blood from a patient's artery through ports on a Y-shaped connecting trunk for extracorporeal treatment and connects it to the terminal segment of the arterial trunk. The connectors are connected to ports for catheters or needles for vascular access at two points for collecting arterial blood from the patient.
FIG. 3 is a schematic general diagram of an extracorporeal treatment system with a two-point connection for arterial blood sampling from a patient, wherein one of two catheter ports or two vascular access needles at one of the arterial blood sampling points can be connected to an arterial distal portion of an arterial highway, and a Y-shaped connecting highway for the extracorporeal treatment method is connected to an arterial port for drug administration through one connector, and the other connector is connected to a second arterial blood sampling point of the patient through a second port of the catheter or a second vascular access needle, and this port is made to have a drug administration function.
Figure 4 is a schematic general drawing of an extracorporeal treatment system, which provides a point-to-point connection through which the patient's blood returns to the terminal venous portion of the venous trunk via ports of a Y-junction trunk for extracorporeal treatment, the connectors of which are connected via ports of a catheter or vascular access puncture needle at two points through which the patient's venous blood returns.
FIG. 5 is an embodiment of an extracorporeal treatment system and method according to FIG. 2, showing the use of a catheter having two ports (arterial and venous).
FIG. 6 illustrates an embodiment of an extracorporeal treatment system and method according to FIG. 4, using a catheter having two ports (arterial and venous).

A special implementation example of a Y-shaped connecting stem can be performed as follows: A Y-shaped connecting stem for an extracorporeal treatment method is manufactured in the form of a Y-shaped tubular stem tee (1) having connecting stem pipes (2) at both ends.

In addition, one of the pipes (2) of the tee (1) is connected to the main tube (3) and has a port (4) having a female adapter (luer-lock female adapter) at its other end, the remaining pipe (2) of the tee (1) is connected to the main tube (5) and has a connector (6) having a pin adapter (luer-lock male adapter) at its other end, and all the main tubes (3, 5) have at least one clamp (7) (Fig. 1).

A system using a Y-shaped connecting line can be designed as a main tubular circuit with a stem clamp (not shown) and includes a dialyzer (8) having a connected venous tubular trunk side (9) and an arterial tubular trunk side (10).

In the case of arterial blood collection from a patient, one catheter port (11) or one vascular access puncture needle (11) can be connected to the venous tubular stem side (9) at one point of the patient's venous blood collection, and two catheter ports (11) or two vascular access puncture needles (11) or one catheter puncture port (11) and one vascular access puncture needle (11) can be connected to the arterial tubular stem side (10) (Figs. 2, 3 and 5).

When the patient's blood returns to the vein on the arterial tubular stem side (10), one catheter port (11) or one needle (11) is connected to the vascular access puncture site at one point of the patient's arterial blood sampling, and two catheter ports (11) or two needles (9) for vascular access puncture can be connected to the venous tubular stem side (9), or one catheter port (11) and one needle (11) for vascular access puncture can be connected at two points where the patient's blood returns to the vein (Figs. 4 and 6).

At the same time, the dialyzer (8) can be configured to have a tubular line (12) of a dialysate filtration circuit, and the venous tubular stem side (9) can include a venous-related stem (13) in which a superior venous port (14) for drug administration, an air content sensor (15) in recovered blood, a lower venous port (16) for drug administration and a venous terminal portion (17) are sequentially located from the dialyzer (8, 13), and the arterial-related stem side (10) is an arterial tubular stem (18) in which a roller pump (19), an arterial port (20) for drug administration and an arterial terminal portion (21) of the dialysis-related stem (18) are sequentially located from the dialyzer (8) (Fig. 2-6).

Additionally, arterial blood sampling of the patient can be implemented in two embodiments of the present system (Figs. 2, 3 and 5).

In a first embodiment, a catheter port (11) or a vascular access needle (11) can be connected to the venous distal end (17) of a venous tubular stem (13) at a single point of venous withdrawal of the patient's blood, and a Y-shaped connecting stem for extracorporeal treatment can be connected to the arterial distal end (21) of an arterial tubular stem (18) via the port (4). These connectors (6) are connected via two catheter ports (11) or two vascular access puncture needles (11), or one catheter puncture port (11) and one vascular access puncture needle (11) are connected to two arterial blood collection points of the patient (Figs. 2 and 5).

And in a second embodiment, the venous distal portion (17) of the venous tubular stem (13) can be connected to the catheter port (11) or the vascular access needle (11) at one of the venous return points of the patient, one of the two ports (11) of the catheter (11) or one of the two vascular access needles can be connected to the arterial distal portion (21) of the arterial tubular stem (18) which is the arterial blood collection point of the patient, and the arterial port (20) for administering a drug through one of the connectors (6) can be connected to a Y-shaped highway for extracorporeal treatment, and the other of the connectors (6) can be connected to a second arterial blood collection point of the patient through the port (11) of the catheter or a second vascular access needle (11), and the port (4) is configured to have a drug administration function (Fig. 3).

In this way, the way in which the patient's blood returns to the vein can be implemented in such a way that the catheter port (11) or the needle (11) is connected to the arterial cannulated line (18) or the arterial distal end (21) of the needle (11) for vascular access puncture at one of the patient's arterial blood collection points, and the Y-shaped connecting line is connected to the venous distal end (17) of the venous cannulated line (13) through the port (4) for extracorporeal treatment, and the connector (6) is connected to two points where the blood returns to the vein of the patient through two ports (11) of the catheter or two needles (11) for vascular access puncture or one port (11) of the catheter and the needle (11) for vascular access puncture (Figs. 4 and 6).

Additionally, a vein, fistula, or vascular prosthesis may be used for vascular access.

The Y-junction trunk is used as follows:

To perform extracorporeal treatment procedures according to various situations (gravity surgery, renal replacement therapy, e.g. hemodialysis and hemofiltration), the system for extracorporeal treatment (depending on the system options described above) is first adjusted using a dialyzer (8), a line (19, 18), a catheter port (11) or a needle (11) for puncture of a vascular access (e.g. fistula, vascular prosthesis), a plug and a Y-shaped connecting passage (highway) for extracorporeal treatment. In this case, the Y-shaped connecting line for the extracorporeal treatment method is made in the form of a Y-shaped tubular stem tee (1) having stem pipes (2) connected to both ends, one of the nozzles (2) of the tee (1) is connected to a stem tube (3), and the other end of the stem tube (3) has a port (4) with a socket adapter (Luer lock female adapter), the remaining two nozzles (2) of the tee (1) are connected to a main tube (5), and the other end of the main tube (5) has a connector (6) with a plug adapter (Luer lock male adapter), and all the stem tubes (3, 5) have at least one clamp (7) each. And the venous tubular stem side (9) and the arterial tubular stem side (10) are connected to a dialysis machine (8). In addition, the dialysis machine (8) may be configured to have a tubular line (12) of a dialysate filtration circuit, and the venous tubular stem side (9) may include a venous tubular stem (13) in which an upper venous port (14) for drug administration, a sensor for air content in recovered blood (15), a lower venous port (16) for drug administration, and a venous terminal portion (17) of the venous tubular line (13) are sequentially located from the dialysis machine (8). And the arterial tubular side (10) is an arterial tubular stem (18), and along this arterial tubular stem, a roller pump (19), an arterial port (20) for drug administration, and an arterial terminal portion (21) of the arterial tubular stem (18) are sequentially located from the dialysis machine (8). At the same time, if the patient has an arteriovenous fistula (an artery or an artificial blood vessel sutured to a vein) and blood is to be drawn, or if the patient has a double lumen catheter installed in a vein, blood may be drawn from both the vascular access site and the port (11) of the catheter, or may be drawn entirely from the catheter.

After that, the course of the extracorporeal treatment method itself is carried out according to the variable circumstances of various methods according to the customized system for extracorporeal treatment method as follows.

A first treatment method may include the following steps: connecting the patient to the venous distal end (17) of a venous tubular line (13) using a single catheter port (11) or a single vascular access needle (11) at a single point where the patient's blood returns to the vein; connecting the patient to the arterial distal end (21) of an arterial line (18) via a port of a Y-shaped connecting line for extracorporeal treatment, wherein the connector (6) of the connecting line (6) is connected to the two arterial blood collection points of the patient using two catheter ports (11) or two vascular access needles (11), or one catheter port (11) and one vascular access needle (11); opening the main clamp (not shown in the drawing) and the clamp (7) of the Y-shaped connecting line; performing a circulation process while regularly adjusting the blood flow rate; stopping the circulation process while regularly adjusting the blood flow rate; Step of closing the main clamp (not shown in the drawing) and the clamp (7) of the Y-shaped connecting line; Step of disconnecting the patient from the system for extracorporeal treatment (Figs. 2 and 5).

A second treatment method may include the following steps: connecting the patient to the venous distal end (17) of the venous tubular line (13) using a single port catheter or a single needle (11) for vascular access puncture at a single point where the patient's blood returns to the vein; connecting the patient to the arterial distal end (21) of the arterial line (18) using one of the two ports (11) of the catheter or one of the two needles (11) for vascular access puncture at one of the two arterial blood collection points of the patient; connecting the patient to the arterial port (20) for drug administration through one of the connectors (6) of the Y-connection stem for extracorporeal therapy, and connecting the other of the connectors (6) to the arterial blood collection point of the venous catheter through a second catheter port (11) or a second vascular puncture needle (11); opening the main clamp (not shown in the drawing) and the clamp (7) on the connector (6) of the Y-connection line; A step of performing a circulation process while regularly controlling the blood flow rate; A step of stopping the circulation process while regularly controlling the blood flow rate; A step of closing the clamp (7) of the main clamp (not shown in the drawing) and the connector (6) of the Y-shaped connecting line to separate the patient from the extracorporeal circulation treatment system; During the circulation process, if necessary, a drug can be administered through the port (4) of the Y-connection line for extracorporeal circulation treatment, and the dosage can be controlled or the administration can be blocked using the clamp (7) located on the stem tube (3) of the port (4) of the Y-connection stem for extracorporeal circulation treatment (Fig. 3).

A third treatment method may include the following steps: connecting the patient to the arterial distal end (21) of the arterial line (18) using a catheter port (11) or a needle (11) for vascular access puncture at one of the patient's arterial blood collection points; connecting the patient to the venous distal end (17) of the venous tubular line (13) via a port (4) of a Y-connection line for systemic circulation treatment, wherein the connector (6) of the Y-connection line is connected to two of the venous return points of the patient's blood via two ports (11) of the catheter or two needles (11) for vascular access puncture or one port (11) of the catheter and one needle (11) for vascular access puncture; opening the main clamp (not shown in the drawing) and the clamp (7) of the Y-connection Langney; performing the circulation process while regularly adjusting the blood flow rate; stopping the circulation process while regularly adjusting the blood flow rate; Step of closing the main clamp (not shown in the drawing) and clamp (7) of the Y-shaped connecting line; step of disconnecting the patient from the extracorporeal treatment system (Figs. 4 and 6).

This technical result is achieved by designing a Y-junction line in the form of a Y-shaped tubular stem tee with connecting stem pipes at both ends, using it in various variations in an extracorporeal therapy system, and structurally implementing the possibility of simultaneously connecting multiple infusion sources in an extracorporeal therapy system to provide simultaneous drug infusions and puncture two veins simultaneously through a single, independent system. This not only effectively implements the possibility of combining multiple access routes into an extracorporeal circuit for direct and reversed single flow, but also perfectly guarantees variable linear and volumetric fluid flow rates, reduced resistance through pressure distribution, automatic pressure regulation in the line circuit due to the second access point through a single system, and reduced patient emergencies due to alarms in the extracorporeal therapy device. Furthermore, connecting the Y-junction line to a standard infusion system to create a flushing system allows simultaneous drug administration from two different sources (e.g., a solution pouch and a drug dispenser).

Since no technical solution has been found that matches the essential features of the claimed invention, it can be concluded that the claimed invention satisfies the patentability requirement of “novelty.”

Since the claimed essential features that predetermine the achievement of the stated technical result are not clearly derived from the prior art, it can be concluded that the claimed invention satisfies the patentability requirement of an "inventive step."

1: Y-shaped tubular main tee of Y-shaped connecting line
2: Main pipe of Y-shaped connecting line
3: Main tube of the port of the Y-shaped connecting stem
4: Port with female adapter for Y-type connection line
5: Main tube of the connector of the Y-type connecting line
6: Connector with pin adapter for Y-type connection line
7: Clamp of Y-shaped connecting line
8: Catapult
9: Main side of the intravenous tube
10: Arterial tube main side
11: Catheter port or needle for puncture of vascular access (e.g., vein, fistula, or vascular prosthesis)
12: Tubular line of the dialysis fluid filtration circuit
13: Venous tubular line
14: Upper venous port for drug administration through venous tubular line
15: Air content sensor in reflux blood in venous tubular line
16: Lower venous port for drug administration through venous tubular line
17: The venous distal portion of the venous tubular line
18: Arterial tubular passage
19: Arterial tubular line roller pump
20: Arterial port for drug administration in arterial tubular passage
21: Arterial distal portion of the arterial tubular passage.

Claims (1)

In a Y-shaped connecting line manufactured in the form of a Y-shaped tubular main tee with connecting main pipes at both ends,
The tubes of the above Y-shaped tubular main tee are connected to both ends of a main tube having at least one clamp installed, and the other end of one of the main tubes has a port with a socket adapter, and the other end of the main tube has a pin connector,
In this case, a Y-shaped connecting line characterized in that the two main tubes are manufactured to be connected to a catheter port or a puncture needle at a vascular access point, and one of the main tubes is manufactured to be connected to an extracorporeal circulation circuit.