CN217697527U - Hydraulic expansion device for internal fistula operation - Google Patents

Abstract

The utility model relates to an internal fistula operation technical field especially relates to a hydraulic pressure extension fixture of internal fistula operation. The utility model discloses a hydraulic expanding device for internal fistula operation, which comprises a syringe, wherein the end part of the syringe is provided with a connector, the connector is hermetically connected with a hose, and the free end of the hose is provided with a round chamfer; the total length of the hose is 100-250 mm, and the diameter of the hose is 1.8-2.5 mm. The utility model solves the technical problem of difficulty in the operation of the internal arteriovenous fistula of patients with chronic renal failure of small blood vessels.

Description

Hydraulic expansion device for internal fistula operation

Technical Field

The utility model relates to an internal fistula operation technical field especially relates to a hydraulic pressure extension fixture of internal fistula operation.

Background

Arteriovenous internal fistula is one of surgical operations and is mainly used for hemodialysis treatment. The arteriovenous internal fistula is a small operation for blood vessel anastomosis, wherein an artery at the part of a forearm close to a wrist and an adjacent vein are sutured, so that arterial blood flows in the anastomosed vein to form an arteriovenous internal fistula, thereby providing sufficient blood for dialysis treatment. The operation does not affect the daily life of the patient, has high safety, does not cause infection and is a very ideal solution. In general, an arteriovenous fistula can last for four to five years, so that it is preferable for patients with renal failure to perform the operation in a timely manner, which can provide sufficient guarantee for dialysis and can lead the patients to obtain better life quality. However, the effect of the most common arteriovenous internal fistula operation at present needs to depend on the large diameter of the cephalic vein and the radial artery of a patient, and the filling condition is good. This makes the operation difficult for some chronic renal failure patients, because of the tiny blood vessels, and the arteriovenous internal fistula, even the operation has to be abandoned, or the artificial blood vessels, the deep venous cannula, etc. are changed, which increases the burden and the pain for the patients.

Those skilled in the art have therefore endeavored to develop a hydraulic expansion device for internal fistula surgery.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects of the prior art, the utility model discloses a hydraulic pressure expanding device of internal fistula operation, what solve is to the thin and small chronic renal failure patient of blood vessel, has the technical problem of difficulty when carrying out arteriovenous internal fistula operation.

In order to achieve the purpose, the utility model provides a hydraulic expansion device for internal fistula operation, which comprises an injector, wherein the end part of the injector is provided with a connector, the connector is hermetically connected with a hose, and the free end of the hose is provided with a round chamfer; the total length of the hose is 100-250 mm, and the diameter of the hose is 1.8-2.5 mm.

Preferably, be equipped with the manometer on the connector for read the pressure value when pressurizeing to inhaling inside heparin salt solution, thereby can control the heparin salt solution by the pressurized degree, avoid utilizing the problem that the pressure value that feels and exert pressure and cause is unstable. The stability of vasodilatation is achieved, the pressure value can be adjusted according to different specific conditions of patients, and a better operation effect is achieved.

Preferably, the hose comprises a first hose and a second hose, and an opening and closing device is arranged between the first hose and the second hose. Through headstock gear's setting to locking headstock gear after inhaling heparin salt solution pressurizes it again, when reaching required pressure value, opens headstock gear, makes heparin salt solution impel the head vein with certain pressure, makes the vein obtain the expansion, the pipe diameter grow.

Preferably, the sum of the length of the first hose, the length of the second hose and the length of the opening and closing device is the total length of the hose. By controlling the total length and the diameter of the hose, the hose is suitable for blood vessels, and the pressurizing effect on heparin saline is better.

Preferably, the opening and closing device is a ball valve or a regulator, and one end of the hose is sealed or unblocked by the ball valve or the regulator.

Preferably, the first tube has a length of 5 to 10mm, which is just enough to be inserted into the blood vessel to be dilated without causing excessive loss of pressure from the pressurized heparin saline.

The utility model has the advantages that:

through simple structural design, inhale the heparin saline in syringe and the hose, through the pressure of syringe, push the heparin saline into tiny blood vessel to expand the blood vessel. So that patients with small blood vessels can also carry out internal arteriovenous fistula operation, and the burden and pain of the patients are greatly relieved. Through the design to the total length and the diameter of hose for the hose is applicable to the blood vessel, and is also better to the pressure boost effect of heparin saline. The round chamfer of the free end of the hose can avoid damage to the blood vessel.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a third embodiment of the present invention.

In the drawings, wherein: 1. an injector; 11. a connector; 2. a hose; 21. a first hose; 22. a second hose; 3. a pressure gauge; 4. an opening and closing device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, which is a first embodiment of the present invention, the present invention provides a hydraulic expansion device for internal fistula operation, comprising an injector 1, wherein the end of the injector 1 is provided with a connector 11, the connector 11 is hermetically connected with a hose 2, and the free end of the hose 2 is provided with a round chamfer; the total length H of the hose 2 is 150mm and the diameter phi of the hose 2 is 2mm.

In this embodiment, heparin saline is sucked into the syringe 1 and the flexible tube 2 by a simple structural design, and pushed into a fine blood vessel by the pressure of the syringe 1 to expand the blood vessel. So that patients with small blood vessels can also carry out internal arteriovenous fistula operation, and the burden and pain of the patients are greatly relieved. Through the design to the total length and the diameter of hose 2 for hose 2 is applicable to the blood vessel, also is better to the pressure boost effect of heparin saline. The rounded chamfer of the free end of the hose 2 avoids damage to the blood vessel.

As shown in fig. 2, for the utility model discloses a second embodiment is equipped with manometer 3 on the connector 11 for read the pressure value when pressurizeing to inhaling inside heparin brine, thereby can control the heparin brine by the pressor degree, avoid utilizing the unstable problem of pressure value that feels and exert pressure and cause. The stability to the vasodilatation is achieved, the pressure value can be adjusted according to the specific conditions of different patients, and a better operation effect is achieved. Meanwhile, the hose 2 comprises a first hose 21 and a second hose 22, and an opening and closing device 4 is arranged between the first hose 21 and the second hose 22. Through the setting of headstock gear 4 to locking headstock gear 4 after inhaling heparin salt solution pressurizes it again, when reaching required pressure value, opens headstock gear 4, makes heparin salt solution impel the cephalic vein with certain pressure, makes the vein obtain the expansion, the pipe diameter grow. As shown in fig. 2, the opening and closing device 4 is a ball valve, as shown in fig. 3, for the third embodiment of the present invention, the opening and closing device 4 can also be a regulator, and one end of the hose 2 is sealed or unblocked by using the ball valve or the regulator. Of course, the opening and closing device 4 may be other devices that can achieve the opening and closing function.

As shown in fig. 2 and 3, the sum of the length H1 of the first hose 21, the length H2 of the second hose 22 and the length of the opening and closing device 4 is the total length H of the hose 2. By controlling the total length and the diameter of the hose 2, the hose 2 is suitable for blood vessels, and the pressurizing effect on the heparin saline is better. Furthermore, the first hose 21 has a length h1 of 8mm, which is just sufficient to be inserted into the blood vessel to be dilated, without too much loss of pressure of the already pressurized heparin saline.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (7)

1. A hydraulic pressure extension fixture of internal fistula operation which characterized in that: the injection device comprises an injector (1), wherein a connector (11) is arranged at the end part of the injector (1), a hose (2) is hermetically connected onto the connector (11), and a round chamfer is arranged at the free end of the hose (2); the total length (H) of the hose (2) is 100-250 mm, and the diameter (phi) of the hose (2) is 1.8-2.5 mm.

2. The internal fistula surgical hydraulic dilation device of claim 1, wherein:

and a pressure gauge (3) is arranged on the connector (11).

3. The internal fistula surgical hydraulic dilation device of claim 2, wherein:

the hose (2) comprises a first hose (21) and a second hose (22), and an opening and closing device (4) is arranged between the first hose (21) and the second hose (22).

4. The internal fistula surgical hydraulic dilation device of claim 3, wherein:

the sum of the length (H1) of the first hose (21), the length (H2) of the second hose (22) and the length of the opening and closing device (4) is the total length (H) of the hose (2).

5. The internal fistula surgical hydraulic dilation device of claim 3, wherein:

the opening and closing device (4) is a ball valve.

6. The internal fistula surgical hydraulic dilation device of claim 3, wherein:

the opening and closing device (4) is a regulator.

7. The internal fistula surgical hydraulic dilation device of claim 3, wherein:

the length (h 1) of the first hose (21) is 5-10 mm.

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