CN215504702U

CN215504702U - Hemodialysis catheter for hemodialysis and hemodialysis device

Info

Publication number: CN215504702U
Application number: CN202120789923.5U
Authority: CN
Inventors: 武前福; 吕嵘; 赵培; 陈会花
Original assignee: Shanghai University of Traditional Chinese Medicine
Current assignee: Shanghai University of Traditional Chinese Medicine
Priority date: 2021-04-17
Filing date: 2021-04-17
Publication date: 2022-01-14
Anticipated expiration: 2031-04-17

Abstract

The application discloses a hemodialysis pipe and hemodialysis device are passed through to blood for hemodialysis, hemodialysis pipe include the pipe body, and inside output channel and the input channel who is used for blood output and input in the blood vessel of being equipped with respectively of pipe body is equipped with the delivery outlet of intercommunication output channel and the input hole of intercommunication input channel on the pipe body surface, still includes sacculus and intercommunication pipe, and sacculus sealing connection is on pipe body lateral surface, and inside just the intercommunication of pipe body is located to the intercommunication pipe the sacculus. The utility model fills liquid or gas into the saccule by communicating the catheter, so that the saccule is expanded to prop up the blood vessel outside the catheter body, thereby avoiding the danger that the catheter body and the blood vessel are contacted due to the limb action of a patient and the blood vessel is blocked to cause unsmooth hemodialysis, effectively avoiding the frequent alarm of a dialysis machine caused by the blockage of the blood vessel, avoiding the adverse events of influencing the curative effect, thrombus and the like, and improving the dialysis efficiency.

Description

Hemodialysis catheter for hemodialysis and hemodialysis device

Technical Field

The application relates to the technical field of medical treatment, particularly, relate to a hemodialysis pipe and hemodialysis device for hemodialysis.

Background

In the hemodialysis process, hemodialysis catheters are needed to be used for clinical dialysis treatment and auxiliary dialysis.

As shown in fig. 1, the conventional hemodialysis catheter includes a catheter body 2, a nozzle 1 for inserting into a blood vessel 9 is disposed at the lower end of the catheter body 2, and the nozzle 1 has a blood introducing function; an output channel 4 and an input channel 7 for outputting and inputting blood in a blood vessel 9 are respectively arranged inside the catheter body 2, and as shown in figure 3, the output channel 4 and the input channel 7 are arranged along the length direction of the catheter body 2; an output hole 3 communicated with the output channel 4 and an input hole 8 communicated with the input channel 7 are arranged on the outer surface of the catheter body 2; correspondingly, a first delivery pipe 5 and a second delivery pipe 6 for delivering blood through an output channel 4 and an input channel 7 respectively are arranged at the upper end of the catheter body 2.

As shown in fig. 2 and 3, when the catheter body 2 is inserted into the blood vessel 9, blood is output from the output channel 4 through the output hole 3 and enters the dialysis apparatus through the first delivery tube 5 for dialysis, and the dialyzed blood enters the input channel 7 through the second delivery tube 6 and enters the blood vessel 9 through the input hole 8.

The applicant found that: when hemodialysis pipe carries out clinical dialysis, can contact because of patient's limbs action between the pipe body 2 of hemodialysis pipe and the vascular 9 inner wall, this just makes the pipe body 2 and vascular 9 block up the entry of pipe body 2 after adhering to the wall, leads to the dialysis machine to report to the police frequently, influences adverse events such as curative effect and thrombus, will take place vascular 9 and block up, leads to hemodialysis to be unsmooth to and influence dialysis efficiency.

SUMMERY OF THE UTILITY MODEL

The main objective of the present application is to provide a hemodialysis catheter and a hemodialysis apparatus for hemodialysis to solve the current problems.

In order to achieve the above object, the present application provides the following techniques:

the utility model provides a hemodialysis pipe for hemodialysis, includes the pipe body, and inside output channel and the input channel that is used for blood output and input in the blood vessel of being equipped with respectively of pipe body still includes sacculus and intercommunication pipe, and sacculus sealing connection is on pipe body lateral surface, and inside and the intercommunication of pipe body is located to the intercommunication pipe the sacculus on the pipe body surface is equipped with the delivery outlet of intercommunication output channel and the input hole of intercommunication input channel.

Preferably, the balloon is disposed between the output aperture and the input aperture.

Preferably, the distance between the balloon and the input aperture is 0.5-2.5 mm.

Preferably, the catheter body is also internally provided with an auxiliary trachea, and the saccule is connected with the communicating catheter through the auxiliary trachea.

Preferably, the auxiliary balloon is radially disposed within the catheter body and perpendicular to the axis of the catheter body.

Preferably, the auxiliary balloons are arranged centrally symmetrically in the catheter body and are at least two in number.

A hemodialysis apparatus comprising the hemodialysis catheter; the blood vessel stent further comprises an injection device which is connected with the communication catheter and used for injecting gas-liquid medium substances into the balloon through the communication catheter so that the balloon is inflated to prop up the blood vessel.

Preferably, the injection device is an injection syringe.

Preferably, the physiological saline is reserved in the injection syringe.

Preferably, the material of the balloon is a calendered thermoplastic elastomer (TPE) medical grade film.

Compared with the prior art, this application can bring following technological effect:

the utility model is provided with a sacculus and a communicating catheter in the catheter body, the sacculus is hermetically connected on the outer side surface of the catheter body, and the communicating catheter is arranged in the catheter body and communicated with the sacculus; liquid or gas is filled into the balloon by communicating the catheter, so that the balloon is expanded to prop up the blood vessel on the outer side of the catheter body, and the occurrence of adverse events such as frequent alarm of a machine, influence on curative effect and thrombus caused by blocking of the inlet of the catheter body after the catheter body and the blood vessel are attached to the wall can be avoided; the technology can effectively avoid the blockage of blood vessels, so that the hemodialysis is smooth and the dialysis efficiency is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the utility model and do not limit it. In the drawings:

FIG. 1 is a schematic structural view of a prior art hemodialysis catheter;

FIG. 2 is a schematic diagram of a prior art hemodialysis catheter in a blood vessel;

FIG. 3 is a schematic cross-sectional view of the hemodialysis catheter of FIG. 2;

FIG. 4 is a schematic structural view of the hemodialysis catheter of the present invention in a non-operational state (not inserted into a blood vessel);

FIG. 5 is a schematic view of the construction of the hemodialysis catheter of the present invention in operation (not inserted into a blood vessel);

FIG. 6 is a schematic view of the construction of the hemodialysis catheter of the present invention in operation (inserted into a blood vessel);

FIG. 7 is a schematic cross-sectional view of the hemodialysis catheter of FIG. 6;

in the figure: 1. the device comprises a guide nozzle, 2, a catheter body, 3, an output hole, 4, an output channel, 5, a first conveying pipe, 6, a second conveying pipe, 7, an input channel, 8, an input hole, 9, a blood vessel, 10, an auxiliary trachea, 11, an air bag, 12 and a communicating catheter.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

The utility model provides a hemodialysis pipe for hemodialysis, includes

pipe body

2, 2 inside output channel 4 and the input channel 7 that are used for blood output and input in the blood vessel 9 of being equipped with respectively of pipe body, be equipped with the input hole 8 of output hole 3 and the intercommunication input channel 7 of intercommunication output channel 4 on 2 external surfaces of pipe body, still include sacculus 11 and

intercommunication pipe

12, 11 sealing connection of sacculus are on 2 lateral surfaces of pipe body, and inside and the intercommunication of pipe body 2 are located to intercommunication pipe 12 sacculus 11.

According to the utility model, the inside of the balloon 11 is filled with liquid (sterile normal saline) or gas through the communicating catheter 12, so that the balloon 11 is expanded to prop up the blood vessel 9 outside the catheter body 2 (after separation, the gap is enlarged), and the contact between the catheter body 2 and the blood vessel 9 caused by the limb action of a patient can be avoided; the occurrence of adverse events such as frequent alarm of a machine, influence on curative effect and thrombus and the like caused by blocking the inlet of the catheter body after the catheter body and the blood vessel are attached to the wall can be avoided; the technology can effectively avoid the blockage of blood vessels, so that the hemodialysis is smooth and the dialysis efficiency is improved.

As shown in fig. 4 and 7, a communication catheter 12 is used for inflating the balloon 11 or injecting liquid, and the communication catheter 12 is provided inside the catheter body 2 and communicates with the balloon 11.

As shown in fig. 4 and 5, the balloon 11 is a cylindrical balloon, and is hermetically connected to the outer side surface of the catheter body 2;

when the external equipment inflates the balloon 11 or injects liquid into the balloon 11 through the communicating conduit 12, the balloon 11 is changed from the flat state shown in fig. 4 to the expansion state, and here, the expanded balloon 11 still keeps a distance from the wall of the blood vessel 9, so that the blood vessel is prevented from being excessively squeezed, and local blood stasis is avoided.

As shown in figure 6, when the balloon 11 is inflated, it can present a "support" state, which can avoid the occurrence of blockage caused by the contact of the blood vessel 9 with the catheter body 2 when the patient moves.

Preferably, the balloon 11 is arranged between the output aperture 3 and the input aperture 8.

The output aperture 3 and the input aperture 8 are the main points where it is necessary to avoid blockage of the blood vessel 9, and in order to better prevent blockage at these two points, the balloon 11 is arranged between the output aperture 3 and the input aperture 8.

The position of the inlet hole 8 is a point where the dialyzed blood returns to the blood vessel, and therefore, it is preferable to dispose the balloon 11 in a region near the inlet hole 8.

Preferably, the distance between the balloon 11 and the input aperture 8 is 0.5-2.5 mm.

In this embodiment, the distance between the balloon 11 and the input hole 8 is preferably 1.0 mm.

In another embodiment, it is preferred that the distance between the balloon 11 and the input aperture 8 is 1.5 mm.

As shown in fig. 4 and 7, to facilitate the machining of the pipes,

preferably, an auxiliary trachea 10 is further arranged inside the catheter body 2, and the balloon is connected with a communication catheter 12 through the auxiliary trachea 10.

As shown in fig. 7, the communicating conduit 12 and the output channel 4 are arranged inside the catheter body 2 coaxially and in parallel with the input channel 7 and along the inner axis of the catheter body 2, and the balloon 11 is connected with the communicating conduit 12 through the auxiliary trachea 10. .

Preferably, the auxiliary trachea 10 is arranged radially within the catheter body 2 and perpendicular to the axis of the catheter body 2.

The auxiliary trachea 10 is radially arranged in the catheter body 2, the saccule 11 is connected with the communicating catheter 12 through the auxiliary trachea 10, and the radial arrangement is convenient for processing and adjustment.

Example 2

On the basis of the example 1, the method comprises the following steps of,

preferably, the auxiliary air tubes 10 are arranged in the catheter body 2 in a central symmetry and the number thereof is at least two.

In the present embodiment, the auxiliary trachea 10 is provided in plurality in order to fill the balloon 11 uniformly. Specifically, the auxiliary air tubes 10 are arranged in the catheter body 2 in a central symmetry manner, and the number of the auxiliary air tubes is at least two.

Example 3

In order to inject a gas-liquid intermediary into the balloon 11 through the communicating catheter 12, the present embodiment proposes a hemodialysis apparatus that performs hemodialysis through a hemodialysis catheter assisted by an injection device.

A hemodialysis apparatus comprising the hemodialysis catheter of the above embodiment 1; the device also comprises an injection device which is connected with the communication catheter 12 and is used for injecting gas-liquid medium substances into the balloon 11 through the communication catheter 12 so as to expand the balloon 11 and prop up the blood vessel 9.

In the present embodiment, the first and second embodiments,

preferably, the injection device is an injection syringe.

The injection syringe is a common syringe, the injection syringe is connected with the communicating conduit 12, air is reserved in advance, the injection syringe is extruded, gas in the injection syringe injects gas medium substances into the sacculus 11 through the communicating conduit 12, and the sacculus 11 is expanded to prop up the blood vessel 9.

Example 4

Based on the implementation of example 3, here using liquid injection,

preferably, sterile physiological saline is reserved in the injection syringe.

The balloon 11 is inflated with a gas medium by the saline solution injected into the balloon 11 through the communication catheter 12, and the blood vessel 9 is supported.

Preferably, the material of the balloon 11 is a calendered thermoplastic elastomer (TPE) medical grade film.

The medical-grade film made of the calendered thermoplastic elastomer TPE has good elasticity and toughness, high tear strength and high safety, and is safer to use in the saccule 11 in a blood vessel.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a hemodialysis pipe for hemodialysis, including pipe body (2), inside output channel (4) and the input channel (7) that are used for blood output and input in blood vessel (9) of being equipped with respectively of pipe body (2), be equipped with output hole (3) of intercommunication output channel (4) and input hole (8) of intercommunication input channel (7) on pipe body (2) surface, a serial communication port, still include sacculus (11) and intercommunication pipe (12), sacculus (11) sealing connection is on pipe body (2) lateral surface, inside and the intercommunication of pipe body (2) are located in intercommunication pipe (12) sacculus (11).

2. Hemodialysis catheter for hemodialysis, according to claim 1, characterized in that said balloon (11) is placed between said output hole (3) and said input hole (8).

3. A hemodialysis catheter for hemodialysis according to claim 2, wherein a distance between the balloon (11) and the input hole (8) is 0.5-2.5 mm.

4. A hemodialysis catheter for hemodialysis according to claim 1, wherein an auxiliary trachea (10) is further provided inside the catheter body (2), and the balloon (11) is connected to a communication catheter (12) through the auxiliary trachea (10).

5. A hemodialysis catheter for hemodialysis according to claim 4, wherein the auxiliary trachea (10) is radially arranged in the catheter body (2) and perpendicular to the axis of the catheter body (2).

6. A hemodialysis catheter for hemodialysis according to claim 5, wherein the auxiliary tubes (10) are centrally symmetrically arranged in the catheter body (2) and the number thereof is at least two.

7. A hemodialysis apparatus comprising the hemodialysis catheter of any one of claims 1 to 6; the device also comprises an injection device which is connected with the communication catheter (12) and is used for injecting gas-liquid medium substances into the balloon (11) through the communication catheter (12) so that the balloon (11) is expanded to prop up the blood vessel (9).

8. The hemodialysis apparatus of claim 7, wherein the infusion device is a syringe.

9. The hemodialysis apparatus of claim 8, wherein the syringe has a saline solution reserved therein.

10. A hemodialysis device in accordance with claim 7, wherein the balloon (11) is made of a medical grade film of thermoplastic elastomer (TPE) of a rolled type.