CN221206361U

CN221206361U - Fixing device

Info

Publication number: CN221206361U
Application number: CN202321871124.8U
Authority: CN
Inventors: 郭露
Original assignee: Taikang Tongji Wuhan Hospital
Current assignee: Taikang Tongji Wuhan Hospital
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2024-06-25
Anticipated expiration: 2033-07-14

Abstract

The embodiment of the application provides a fixing device, which is applied to an indwelling needle and comprises: the belt body is used for being sleeved on the limb of the user; the extension belt is arranged at the edge of the belt body; the protective sleeve is arranged on one side of the extension belt, which is away from the belt body, and is used for accommodating the Y-shaped connector of the indwelling needle. Therefore, when the belt body is sleeved on the limb of the user, the protecting sleeve connected to the belt body through the extension belt and the Y-shaped connector stored in the protecting sleeve are also relatively reliably fixed, in addition, as the belt body and the protecting sleeve are separately arranged, when the belt body is sleeved on the limb of the user, the belt body is tightly attached to the skin, and the protecting sleeve connected with the belt body through the extension belt can move relative to the belt body, so that the protecting sleeve is not tightly attached to the skin, and the pressure injury caused by the fact that the Y-shaped connector is tightly attached to the skin in the long-term use process of the indwelling needle is effectively avoided.

Description

Fixing device

Technical Field

The application belongs to the technical field of medical equipment, and particularly relates to a fixing device.

Background

The use of the indwelling needle can reduce the pain of patients caused by repeated venipuncture and the fear of needle injection, is convenient for clinical medication, emergency medication for critical patients and reduces the workload of medical staff and the pain of patients, so the indwelling needle is widely applied in clinic.

At present, an adhesive tape is generally used for fixing a Y-shaped joint of an indwelling needle in clinic, however, as the indwelling needle needs to be fixed on the skin of a patient for a long time, on one hand, the Y-shaped joint can press the skin under the fixation of the adhesive tape, and skin pressure injury is easily caused; on the other hand, when the patient sweats, sweat can infiltrate the adhesive tape to reduce the viscosity, so that the fixation of the Y-shaped joint is not firm.

Disclosure of utility model

The application aims to provide a fixing device which solves the problems that a Y-shaped connector is not firmly fixed or the skin is crushed in the use process of an indwelling needle in the prior art.

In order to solve the technical problems, the application is realized as follows:

In a first aspect, the present application discloses a fixation device for use with an indwelling needle comprising a Y-shaped connector, the fixation device comprising:

The belt body is used for being sleeved on the limb of the user;

an extension band disposed at an edge of the band body;

The protection sleeve is arranged on one side of the extension belt, which is away from the belt body, and is used for accommodating the Y-shaped connector.

Optionally, the protective sleeve comprises a first body and a second body, and the first body and the second body are both in a belt shape;

One end of the first body is connected to one side of the extension belt, which is away from the belt body;

One end of the second body is connected with one end of the first body, which is away from the extension belt, and the other end of the second body extends towards the direction of the extension belt;

The first body is provided with a first rubber cushion on one side close to the second body, the second body is provided with a second rubber cushion on one side close to the first body, and the second rubber cushion is adhered to the first rubber cushion.

Optionally, a pressure-proof pad is further disposed on a side of the first body, which is close to the second body, and the first rubber pad is disposed on a side of the pressure-proof pad, which is away from the first body.

Optionally, contact surfaces of the first rubber pad and the second rubber pad are coated with pressure-sensitive adhesive.

Optionally, the belt body includes first end and the second end that deviate from each other, first end is provided with first connecting piece, the second end is provided with the second connecting piece, the second connecting piece can dismantle connect in first connecting piece.

Optionally, the first connecting piece is provided with first bonding piece in the area body deviates from one side of user's limbs, the second connecting piece in the area body be close to one side of user's limbs and be provided with the second bonding piece, the second bonding piece with first bonding piece bonds.

Optionally, the indwelling needle further comprises an extension tube; the belt body is provided with a fixing piece on one side far away from the limbs of the user, and the fixing piece is used for fixing the extension tube.

Optionally, the fixing piece comprises a fixing belt, and the fixing belt is arranged along the extending direction of the belt body;

One end of the fixing belt is fixedly connected to the belt body, a third bonding piece is arranged at one side, close to the belt body, of the other end of the fixing belt, a fourth bonding piece is arranged at a corresponding position of the third bonding piece, and the fourth bonding piece is bonded with the third bonding piece.

Optionally, the indwelling needle further comprises a hose; an observation window is formed in the edge of the belt body, which is opposite to one side of the extension belt, and is used for observing the condition of the hose.

Optionally, a transparent film is arranged at the window of the observation window, and a loose belt is further arranged at the edge of the belt body of the observation window.

In the embodiment of the application, the fixing device comprises: the belt body is sleeved on the limb of the user; an extension band disposed at an edge of the band body; the protection sleeve is arranged on one side of the extension belt, which is away from the belt body, and is used for accommodating the Y-shaped connector. On the one hand, the protective sleeve capable of accommodating the Y-shaped joint is arranged, and is connected to the edge of the belt body through the extension belt, so that when the belt body is reliably sleeved on the limb of a user, the protective sleeve and the Y-shaped joint accommodated in the protective sleeve are also relatively reliably fixed; on the other hand, owing to set up the extension area for the area body and lag separation set up, when the area body cup jointed with user's limbs, the area body is close to skin, and the lag of connecting in extension area one end can be moved relative to the area body, so that the lag does not paste close to skin, thereby effectively avoid keeping somewhere the pressure wound that Y type joint hugs closely the skin in the long-term use of needle.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a prior art indwelling needle;

FIG. 2 is a schematic structural view of a fixing device according to an embodiment of the present application;

FIG. 3 is a second schematic diagram of a fixing device according to an embodiment of the present application;

FIG. 4 is a third schematic structural view of a fixing device according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a protecting sleeve of a fixing device according to an embodiment of the present application;

Reference numerals: 1. the hose comprises a belt body, 11, a first connecting piece, 111, a first bonding piece, 12, a second connecting piece, 121, a second bonding piece, 2, an extension belt, 3, a protective sleeve, 31, a first body, 311, a first rubber pad, 32, a second body, 321, a second rubber pad, 33, a pressure-proof pad, 4, a fixing piece, 41, a fixing belt, 42, a third bonding piece, 43, a fourth bonding piece, 5, a viewing window, 51, a transparent film, 52, a loosening belt, 6.Y type joints, 7, an extension pipe and 8.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, there is shown a schematic structural diagram of an indwelling needle in the prior art, and as shown in fig. 1, the indwelling needle mainly includes a Y-shaped connector 6, an extension tube 7 and a hose 8 which are sequentially connected, wherein the Y-shaped connector 6 is used for connecting an infusion tube, and a needle core is arranged in the hose 8. In the use process of the indwelling needle, firstly, the hose 8 and the needle core are pierced through the skin together and the indwelling needle is pierced along a blood vessel; the needle is then withdrawn, leaving the hose 8 in the vessel; finally, the indwelling needle is fixed, the infusion pipeline is inserted into the Y-shaped joint 6, and the liquid is continuously administered to a user through the extension tube 7 and the hose 8 in sequence. The use of the indwelling needle can reduce the pain of patients caused by repeated venipuncture and the fear of needle injection, is convenient for clinical medication, emergency medication for critical patients and reduces the workload of nurses and the pain of patients, so the indwelling needle is widely applied in clinic.

The embodiment of the application provides a fixing device which is applied to an indwelling needle, and the fixing device is described in detail below with reference to the accompanying drawings.

Referring to fig. 2 to 4, which are schematic structural views illustrating a fixing device according to an embodiment of the present application, as shown in fig. 2 to 4, the present application provides a fixing device applied to an indwelling needle including a Y-shaped connector 6, the fixing device including: the belt body 1 is used for being sleeved on the limb of the user; an extension belt 2, wherein the extension belt 2 is arranged at the edge of the belt body 1; the protection sleeve 3, the protection sleeve 3 sets up in the extension area 2 one side that deviates from the area body 1, and the protection sleeve 3 is used for accomodating Y type joint 6.

In the embodiment of the application, on one hand, as the protective sleeve 3 capable of accommodating the Y-shaped joint 6 is arranged, and the protective sleeve 3 is connected to the edge of the belt body 1 through the extension belt 2, when the belt body 1 is reliably sleeved on a limb of a user, the protective sleeve 3 and the Y-shaped joint 6 accommodated in the protective sleeve 3 are also relatively reliably fixed; on the other hand, due to the arrangement of the extension band 2, the band body 1 and the protective sleeve 3 are arranged separately, when the band body 1 is sleeved with a limb of a user, the band body 1 is tightly attached to the skin, and the protective sleeve 3 connected to one end of the extension band 2 can move relative to the band body 1, so that the protective sleeve 3 is not tightly attached to the skin, and the compression injury caused by the fact that the Y-shaped joint 6 is tightly attached to the skin in the long-term use process of the indwelling needle is effectively avoided; in addition, the protection sleeve 3 can also avoid the direct exposure of the Y-shaped interface to the air, thereby reducing the possibility of pollution caused by exposure and being beneficial to improving the use safety of the detained needle.

The band body 1 and the extension band 2, and the protection cover 3 may be connected together by stitching, bonding, or other means, or may be integrally formed, which is not limited herein. When the extension band 2 and the protective sheath 3 are integrally formed, the integrity of both is improved.

Referring to fig. 5, a schematic structural diagram of a protective cover of a fixing device according to an embodiment of the present application is shown, and as shown in fig. 5, the protective cover 3 includes a first body 31 and a second body 32, where the first body 31 and the second body 32 are both in a belt shape; one end of the first body 31 is connected to the side of the extension band 2 facing away from the band body 1; one end of the second body 32 is connected with one end of the first body 31 away from the extension band 2, and the other end of the second body 32 extends towards the extension band 2; wherein, a side of the first body 31 close to the second body 32 is provided with a first rubber pad 311, a side of the second body 32 close to the first body 31 is provided with a second rubber pad 321, and the second rubber pad 321 is adhered to the first rubber pad 311.

In the embodiment of the present application, on the one hand, since the protection sleeve 3 includes the first body 31 and the second body 32, and one end of the first body 31 is connected to the side of the extension band 2 facing away from the band body 1, one end of the second body 32 is connected to one end of the first body 31 facing away from the extension band 2, and the other end of the second body 32 extends toward the extension band 2, that is, the first body 31 and the second body 32 may enclose a cavity, so as to receive the Y-shaped connector 6 in the cavity. It can be understood that when the joint of the Y-shaped joint 6, i.e. the part for connecting with the infusion pipeline in the infusion process, is placed close to the bottom of the protective sleeve 3 (i.e. the end of the protective sleeve 3 away from the extension belt 2), the Y-shaped joint 6 can be effectively prevented from being directly contacted with air, and the risk of pollution is reduced; on the other hand, because the first body 31 is provided with the first cushion 311 near one side of the second body 32, and the second cushion 321 is provided with one side of the second body 32 near the first body 31, the second cushion 321 is bonded with the first cushion 311, that is, in the use process of the fixing device, the first body 31 and the second body 32 are reliably bonded together, thereby effectively fixing the Y-shaped connector 6 in the protective sleeve 3 and avoiding the falling of the Y-shaped connector 6.

It should be noted that the first rubber pad 311 and the second rubber pad 321 are matched in shape, and may be bar-shaped, arc-shaped, wavy, or other different shapes, which are not limited herein. In the embodiment of the present application, the first rubber pad 311 and the second rubber pad 321 are strip-shaped pads with matched shapes, and the strip-shaped pads are arranged along a direction approximately parallel to the extending direction of the belt body 1.

In some alternative embodiments of the present application, the side of the first body 31 near the second body 32 is further provided with a pressure-proof pad 33, and the first rubber pad 311 is disposed on the side of the pressure-proof pad 33 facing away from the first body 31.

In the embodiment of the application, in order to further reduce the possible pressing feeling of the Y-shaped connector 6 on the skin during the long-term use of the indwelling needle, the embodiment of the application is further provided with the anti-pressing pad 33 at the side of the first body 31 close to the second body 32, and it is understood that the external dimension of the anti-pressing pad 33 should be larger than the external dimension of the Y-shaped connector 6, so as to effectively relieve the pressing feeling of the Y-shaped connector 6 on the skin; in addition, when the pressure-proof pad 33 is provided, the first rubber pad 311 should be provided at a side of the pressure-proof pad 33 facing away from the first body 31, and the Y-shaped joint 6 is reliably fixed in the protection sleeve 3 by reliable adhesion of the first rubber pad 311 and the second rubber pad 321.

In some alternative embodiments of the present application, the contact surfaces of the first rubber pad 311 and the second rubber pad 321 are both coated with pressure sensitive adhesive.

In the embodiment of the application, the contact surfaces of the first rubber pad 311 and the second rubber pad 321 are coated with the pressure-sensitive adhesive, and the pressure-sensitive adhesive can be instantly bonded when slightly applying pressure, so that the operation of medical staff is facilitated, and the workload of the medical staff can be reduced to a certain extent.

The pressure-sensitive adhesive may be an organic silicon pressure-sensitive adhesive, a rubber pressure-sensitive adhesive or an acrylate pressure-sensitive adhesive, and is not limited herein. In the embodiment of the application, the organic silicon pressure-sensitive adhesive is preferable, is safe and environment-friendly, has no stimulation to skin, has good curing effect and water vapor resistance, and can not reduce the bonding reliability between the first rubber pad 311 and the second rubber pad 321 even if a user sweats, thereby reliably fixing the Y-shaped joint 6 in the protective sleeve 3.

In some alternative embodiments of the application, the band 1 comprises a first end and a second end facing away from each other, the first end being provided with a first connecting element 11 and the second end being provided with a second connecting element 12, the second connecting element 12 being detachably connected to the first connecting element 11.

In the embodiment of the application, since the first connecting piece 11 and the second connecting piece 12 are respectively arranged at the two ends of the belt body 1, and the second connecting piece 12 is detachably connected to the first connecting piece 11, the fixing device is convenient for medical staff to fix on or detach from the limbs of the user through the connection or the detachment of the first connecting piece 11 and the second connecting piece 12.

The shape, number and specific arrangement positions of the first connecting member 11 and the second connecting member 12 may be adjusted according to actual needs, and are not limited herein. It can be understood that the first connecting piece 11 and the second connecting piece 12 are matched in appearance, consistent in setting number and corresponding in setting position, and under the matched connection of the first connecting piece 11 and the second connecting piece 12, the belt body 1 can be tightly attached to the skin of a user, so that the fixing device is not shifted, and the use safety of the indwelling needle is ensured. In the embodiment of the application, the first connecting piece 11 and the second connecting piece 12 are in a strip shape, and are respectively provided with two edges which are parallel to each other on the belt body 1, so that on one hand, the contact area between the fixing device and the skin can be reduced, and the discomfort of a user is reduced; on the other hand, by the reliable connection of the two sets of the first connecting piece 11 and the second connecting piece 12 respectively arranged at the two edges of the belt body 1, the belt body 1 can be ensured to be closely attached to the skin, thereby ensuring the use safety of the indwelling needle.

In some alternative embodiments of the present application, the first connecting member 11 is provided with a first adhesive member 111 on a side of the belt body 1 facing away from the limb of the user, and the second connecting member 12 is provided with a second adhesive member 121 on a side of the belt body 1 adjacent to the limb of the user, and the second adhesive member 121 is adhered to the first adhesive member 111.

In the embodiment of the application, since the first connecting piece 11 is provided with the first bonding piece 111 at one side of the belt body 1 away from the limb of the user, and the second connecting piece 12 is provided with the second bonding piece 121 at one side of the belt body 1 close to the limb of the user, when the first bonding piece 111 and the second bonding piece 121 are matched and bonded, the shape of the fixing device is in a ring shape which is suitable for the limb of the user, namely, no bonding section protruding out of the belt body 1 exists, and the wearing comfort of the user is improved.

It should be noted that, the first connecting piece 11 is at least less than the end far away from the belt body 1 and the first bonding piece 111 is provided, and the second connecting piece is at least less than the end far away from the belt body 1 and the second bonding piece 121 is provided, further, in order to make the fixing device suitable for different users, the first connecting piece 11 and the second connecting piece 12 in the embodiment of the application have elasticity, thus being suitable for different limb circumferences, and being suitable for different users, thereby improving wearing comfort of the users. The outer shape and the material of the first adhesive member 111 and the second adhesive member 121 may be adjusted according to actual needs, and are not limited herein. It will be appreciated that the first adhesive member 111 and the second adhesive member 121 are matched in shape and material. In the embodiment of the present application, the first adhesive part 111 and the second adhesive part 121 are rectangular velcro, specifically, the first adhesive part 111 is a velcro with a matted surface, the second adhesive part 121 is a velcro with a barbed surface, and the first connector 11 and the second connector 12 are reliably adhered together by adhesion of the matted surface and the barbed surface of the velcro.

In some alternative embodiments of the application, the indwelling needle further comprises an extension tube 7; the side of the belt body 1, which is far away from the limb of the user, is also provided with a fixing piece 4, and the fixing piece 4 is used for fixing the extension tube 7.

In the embodiment of the application, as the fixing piece 4 is further arranged on one side of the belt body 1 away from the limb of the user, the fixing piece 4 can fix the extension tube 7 of the indwelling needle, and the hose 8 is prevented from shifting or even falling off due to being pulled when the extension tube 7 is scattered randomly.

The number and the arrangement position of the fixing members 4 may be adjusted according to actual needs, and are not limited herein. In the embodiment of the application, three fixing pieces 4 are arranged, and the three fixing pieces 4 are uniformly arranged in the width direction of the belt body 1, namely the axial direction of the extension belt 2, so that the Y-shaped joint 6 and the extension pipe 7 are not bent, and the smoothness of a liquid flow passage is ensured.

In some alternative embodiments of the application, the fixing member 4 comprises a fixing band 41, the fixing band 41 being arranged along the extension direction of the band body 1; one end of the fixing belt 41 is fixedly connected to the belt body 1, a third bonding piece 42 is arranged at one side, close to the belt body 1, of the other end of the fixing belt 41, a fourth bonding piece 43 is arranged at a corresponding position of the third bonding piece 42, and the fourth bonding piece 43 is bonded with the third bonding piece 42.

In the embodiment of the present application, on one hand, since the fixing band 41 is disposed along the extending direction of the band body 1, that is, the fixing band 41 is disposed substantially perpendicular to the extension tube 7, the extension tube 7 is prevented from being bent during the fixing process, so that the liquid flow path is not smooth. On the other hand, since one end of the fixing band 41 is fixedly connected to the band body 1, the other end of the fixing band 41 is provided with the third adhesive member 42 on the side close to the band body 1, and the fourth adhesive member 43 is provided at the corresponding position of the band body 1 to the third adhesive member 42, and the extension tube 7 can be effectively fixed by the fourth adhesive member 43 and the third adhesive member 42.

The outer shape and the material of the fourth adhesive 43 and the third adhesive 42 may be adjusted according to actual needs, and are not limited herein. It will be appreciated that the fourth adhesive 43 is of a shape and material matching that of the third adhesive 42. In the embodiment of the present application, the fourth adhesive part 43 and the third adhesive part 42 are rectangular magic tapes, specifically, the fourth adhesive part 43 is a magic tape with a rough surface, the third adhesive part 42 is a magic tape with a thorn surface, and the fixing band 41 and the band body 1 are enclosed to form a channel for the extension tube 7 to pass through the adhesion of the rough surface and the thorn surface of the magic tape, so that the extension tube 7 is reliably fixed, and the displacement or even falling off of the hose 8 caused by pulling when the extension tube 7 falls off at will is avoided.

In some alternative embodiments of the application, the indwelling needle further comprises a hose 8; an observation window 5 is arranged at the edge of the belt body 1, which is opposite to one side of the extension belt 2, and the observation window 5 is used for observing the condition of the hose 8.

Further, in some alternative embodiments of the present application, a transparent film 51 is provided at the window of the viewing window 5, and a slack strap 52 is further provided at the edge of the strap body 1 of the viewing window 5.

In the embodiment of the application, as the edge of the belt body 1, which is opposite to one side of the extension belt 2, is provided with the observation window 5, and the window of the observation window 5 is provided with the transparent film 51, medical staff or users can observe whether the puncture position is in time in blood return or not, and the like, thereby timely processing the puncture position and further improving the infusion safety; because the observation window 5 still is provided with the relaxation area 52 in the edge of the area body 1, makes user's wearing comfort improve through the elasticity of relaxation area 52 self, simultaneously, the relaxation area 52 makes hose 8 paste the user skin through self elastic deformation, plays the effect of fixed hose 8, further improves fixing device's reliability.

It should be noted that, in the use process of the fixing device, the loosening belt 52 is located on one side of the hose 8 close to the extension tube 7, even if the loosening belt 52 is far away from the head of the hose 8, thus, when the extension tube 7 is further fixed, the extension tube 7 and the blood vessel can be ensured to be approximately U-shaped, and the fixing requirement of the indwelling needle can be met, thereby reducing the complications of the indwelling needle such as blood return and tube blockage.

The following provides a specific working procedure of the fixing device according to the embodiment of the present application for fixing an indwelling needle:

1. Placing the fixing device at a corresponding position of the limb of the user, wherein the observation window 5 corresponds to the puncture part of the indwelling needle, and the loosening belt 52 is positioned at one side of the hose 8 close to the extension tube 7, even if the loosening belt 52 is far away from the head of the hose 8;

2. Bonding the first connecting piece 11 and the second connecting piece 12 according to the circumference of the limbs of the user;

3. the extension tube 7 is fixed by the fixing piece 4;

4. The Y-shaped joint 6 is placed in the protective sleeve 3, and the first rubber pad 311 and the second rubber pad 321 are bonded, so that the fixing of the fixing device is completed; when the transfusion is needed, the Y-shaped joint 6 is only needed to be taken out from the protective sleeve 3 and inserted into the transfusion pipeline.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A fixation device for use with an indwelling needle comprising a Y-shaped connector, the fixation device comprising:

The belt body is used for being sleeved on the limb of the user;

an extension band disposed at an edge of the band body;

2. The fastening device of claim 1, wherein the protective sleeve comprises a first body and a second body, the first body and the second body each having a band shape;

3. The fixing device according to claim 2, wherein an anti-pressing pad is further arranged on one side of the first body close to the second body, and the first rubber pad is arranged on one side of the anti-pressing pad away from the first body.

4. A fastening device according to claim 2 or 3, wherein the contact surfaces of the first and second rubber pads are each coated with a pressure sensitive adhesive.

5. A fastening device according to claim 1 or 2, wherein the strap comprises a first end and a second end facing away from each other, the first end being provided with a first connector and the second end being provided with a second connector, the second connector being detachably connected to the first connector.

6. The fastening device of claim 5, wherein the first connector is provided with a first adhesive on a side of the strap facing away from the user's limb, and the second connector is provided with a second adhesive on a side of the strap facing toward the user's limb, the second adhesive being adhered to the first adhesive.

7. A fixation device according to claim 1 or 2, wherein the indwelling needle further comprises an extension tube; the belt body is provided with a fixing piece on one side far away from the limbs of the user, and the fixing piece is used for fixing the extension tube.

8. A fastening device according to claim 7, wherein the fastening member comprises a fastening strap disposed along an extending direction of the strap body;

9. A fastening device according to claim 1 or 2, wherein said indwelling needle further comprises a hose; an observation window is formed in the edge of the belt body, which is opposite to one side of the extension belt, and is used for observing the condition of the hose.

10. A fastening device according to claim 9, wherein a transparent film is provided at the window of the viewing window, and wherein a slack strap is provided at the edge of the strap.