Medical antibacterial dressing remaining needle fixing assembly

Abstract

The invention belongs to the technical field of medical indwelling needles, and discloses a medical antibacterial dressing indwelling needle fixing assembly which comprises an indwelling needle fixing wearing sleeve. The transparent observation plate is arranged in the middle of the top end of the indwelling needle fixing and wearing sleeve; the antibacterial dressing fixing film is adhered to the bottom surface of the top of the remaining needle fixing and wearing sleeve; according to the technical scheme, the heating elastic piece and the pneumatic pressing mechanism are arranged, heat generated by the heating elastic piece can heat the interior of the indwelling needle fixing and wearing sleeve so as to facilitate subsequent wearing and warm keeping, and when the outer end of the pneumatic pressing mechanism is pushed to move, the inner end of the pneumatic pressing mechanism is communicated with the transparent observation plate and an inner cavity of the antibacterial dressing fixing pasting film; the air pressure in the transparent observation plate and the antibacterial dressing fixing film can be increased through the heat of the heating elastic piece, the antibacterial dressing fixing film can be extruded to be fully attached to the skin surface through expansion at the same time, and the situation that the experience feeling is affected due to the fact that the antibacterial dressing fixing film is not tightly adhered and the temperature is low is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical indwelling needles, and specifically relates to a fixed component of a medical antibacterial dressing indwelling needle. Background Art

[0002] The fixed component of the medical antibacterial dressing indwelling needle is an important device used in the medical field. Its main purpose is to ensure the stability and safety of the indwelling needle in the patient's body, while reducing the risk of infection. The main principle is to achieve stable support for each part of the indwelling needle through a multi-point targeted fixing method. The needle-fixing component and the antibacterial dressing patch act together on the indwelling needle and the surrounding skin area to form a stable and sterile environment, where:

[0003] The antibacterial dressing patch is a sterile dressing used to cover the indwelling needle and the surrounding skin area. It can not only effectively reduce the risk of bacterial infection, but also provide additional fixing effect to prevent the indwelling needle from falling off. The middle part of the top surface of the antibacterial dressing patch is usually recessed with a mounting hole for mounting the needle-fixing component;

[0004] The needle-fixing component is used to fix the indwelling needle on the patient's skin. A hollow cavity is formed inside it, and auxiliary fixing devices such as a needle-fixing airbag can be installed. The bottom surface of the needle-fixing component is attached to the patient's skin to ensure the stability of the indwelling needle.

[0005] The existing indwelling needle fixing components can only simply fix the indwelling needle. During the infusion process inside some indwelling needles, since the temperature of the injected liquid is low, it will cause the infusion position of the patient to be cold, affecting the liquid delivery and bringing discomfort to the patient at the same time. Moreover, the fixing effect of adhesion is poor and it is easy to shake and fall off. Therefore, it needs to be improved. Summary of the Invention

[0006] To solve the problems raised in the above background art, the present invention provides a fixed component of a medical antibacterial dressing indwelling needle, which has the advantages of being convenient for heat preservation and pressing of the infusion point of the indwelling needle.

[0007] To achieve the above object, the present invention provides the following technical solution: A fixed component of a medical antibacterial dressing indwelling needle, comprising an indwelling needle fixing and wearing sleeve; a transparent observation plate provided in the middle of the top end of the indwelling needle fixing and wearing sleeve; an antibacterial dressing fixing film adhered to the bottom surface of the top of the indwelling needle fixing and wearing sleeve; a wearing component provided inside the bottom end of the indwelling needle fixing and wearing sleeve; the pneumatic pressing mechanism includes an air storage cylinder fixedly installed inside the indwelling needle fixing and wearing sleeve and located outside the transparent observation plate. An air-driven piston rod is movably installed inside the air storage cylinder. An activity frame is provided on the outside of the air-driven piston rod, and a ventilation component is provided on the inside of the air-driven piston rod.

[0008] Preferably, a power control group is provided on one side of the top end of the indwelling needle fixing and wearing sleeve, a heating elastic sheet is provided on the outer side inside the indwelling needle fixing and wearing sleeve, and the heating elastic sheet is electrically connected to the power control group through an electric wire.

[0009] Preferably, the wearing assembly includes a telescopic adjustment band, a magic mother tape and a magic son tape;

[0010] The telescopic adjustment band is arranged on the inner side of the bottom of the indwelling needle fixing and wearing sleeve, the magic mother tape is arranged at the bottom of one end of the telescopic adjustment band, and the magic son tape is arranged at the bottom of the other end of the telescopic adjustment band.

[0011] Preferably, the telescopic adjustment band is made of polyester fiber and polyurethane elastomer.

[0012] Preferably, the ventilation assembly includes a ventilation top pipe, a blocking ring and a one-way ventilation valve flap;

[0013] The ventilation top pipe is fixedly installed inside the pneumatic piston rod, the blocking ring is fixedly installed inside the inner cavity of the air storage cylinder, and the one-way ventilation valve flap is arranged inside the inner cavity of the air storage cylinder and is located inside the blocking ring.

[0014] Preferably, an adhesive sticker is provided on the inner side of the movable frame.

[0015] Preferably, an absorption and tightening assembly is provided inside the indwelling needle fixing and wearing sleeve and is located below the outer side of the air storage cylinder. The absorption and tightening assembly includes a fixed rubber plate, a tightening suction cup and a ventilation hole;

[0016] The fixed rubber plate is fixedly installed inside the indwelling needle fixing and wearing sleeve and is located at the bottom of the outer end of the air storage cylinder. The tightening suction cup is opened inside the fixed rubber plate and is communicated with the bottom end of the air storage cylinder. The ventilation hole is fixedly installed at the bottom of the fixed rubber plate and is located directly below the tightening suction cup.

[0017] Preferably, a shielding assembly is provided at the inner end of the movable frame and is located on the inner wall of the fixed rubber plate. The shielding assembly includes a shielding plate, a connecting spring and a ventilation round hole;

[0018] The shielding plate is fixedly installed on the inner side of the bottom of the movable frame. The inner end of the shielding plate is elastically connected to the inner cavity of the indwelling needle fixing and wearing sleeve through a connecting spring. The ventilation round hole is opened inside the shielding plate.

[0019] Preferably, the diameter of the ventilation round hole is the same as the diameter of the tightening suction cup.

[0020] Preferably, the indwelling needle fixing and wearing sleeve is made of rubber, and the transparent observation plate is made of polycarbonate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] Through the above technical solution, by setting the heating shrapnel and the pneumatic pressing mechanism, first, since the heating shrapnel generates heat, it can heat the inside of the indwelling needle fixing and wearing sleeve for subsequent wearing and keeping warm. When the outer end of the pneumatic pressing mechanism is pushed to move so that the inner end communicates with the inner cavity of the transparent observation plate and the antibacterial dressing fixing film, some gas will enter. And through the heat of the heating shrapnel, the air pressure inside the transparent observation plate and the antibacterial dressing fixing film can be increased and expanded, so as to squeeze the antibacterial dressing fixing film to fully adhere and stick tightly to the skin surface, avoiding the poor adhesion of the antibacterial dressing fixing film and the low temperature from affecting the experience.

[0023] In the present invention, by setting the shielding component, through the design of the shielding component, the middle part of the sucking component can be shielded and sealed to prevent gas from entering the inside of the pneumatic pressing mechanism through the bottom end of the sucking component and causing blockage. When the outer ends of the pneumatic pressing mechanism are pushed to move towards each other, the outer ends of the shielding component can be moved simultaneously until the middle part of the shielding component releases the blockage of the sucking component and the pneumatic pressing mechanism, so as to smoothly make the pneumatic pressing mechanism suck the gas inside the sucking component subsequently.

[0024] In the present invention, by setting the sucking component, when the outer ends of the pneumatic pressing mechanism move towards each other, a negative pressure will be generated in the inner cavity of the outer ends of the pneumatic pressing mechanism, and thus the gas inside the sucking component will be sucked away through the shielding component. At this time, a suction force will be generated on the surface of the sucking component in contact with the patient's skin, so that the bottom end of the sucking component can be tightly attached to the skin surface, and finally the overall wearing and fixing effect of the indwelling needle fixing and wearing sleeve can be greatly improved, avoiding the detachment caused by the movement of children or some patients who like to move around. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a schematic structural diagram of the wearing component of the present invention;

[0027] Figure 3 is a schematic structural diagram of the transparent observation plate of the present invention;

[0028] Figure 4 is Figure 3 a partial enlarged structural diagram at A in

[0029] Figure 5 is Figure 3 a partial enlarged structural diagram at B in

[0030] Figure 6 is a schematic structural diagram of the air storage cylinder of the present invention;

[0031] Figure 7 is a schematic structural diagram of the ventilation top pipe of the present invention;

[0032] Figure 8 For Figure 7 The partial enlarged structural schematic diagram at position C in the figure.

[0033] In the figure: 1. Indwelling needle fixing and wearing sleeve; 2. Transparent observation plate; 3. Antibacterial dressing fixing film; 4. Wearing component; 401. Telescopic adjustment belt; 402. Magic mother sticker belt; 403. Magic sticker; 5. Power control group; 6. Heating chip; 7. Pneumatic pressing mechanism; 701. Air storage cylinder; 702. Pneumatic piston rod; 703. Movable frame; 704. Ventilation component; 7041. Ventilation top pipe; 7042. Blocking ring; 7043. One-way ventilation valve flap; 8. Suction tightening component; 801. Fixed rubber plate; 802. Fastening suction cup; 803. Ventilation hole; 9. Shielding component; 901. Shielding plate; 902. Connecting spring; 903. Ventilation round hole; 10. Adhesive sticker. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] As Figures 1 to 8 shown, the present invention provides a medical antibacterial dressing indwelling needle fixing component, including an indwelling needle fixing and wearing sleeve 1; a transparent observation plate 2, arranged in the middle of the top end of the indwelling needle fixing and wearing sleeve 1; an antibacterial dressing fixing film 3, adhered to the bottom surface of the top of the indwelling needle fixing and wearing sleeve 1; a wearing component 4, arranged inside the bottom end of the indwelling needle fixing and wearing sleeve 1; the pneumatic pressing mechanism 7 includes an air storage cylinder 701, the air storage cylinder 701 is fixedly installed inside the indwelling needle fixing and wearing sleeve 1 and is located outside the transparent observation plate 2, a pneumatic piston rod 702 is movably installed inside the air storage cylinder 701, a movable frame 703 is arranged outside the pneumatic piston rod 702, and a ventilation component 704 is arranged inside the pneumatic piston rod 702.

[0036] When the movable frame 703 is pushed to drive the pneumatic piston rod 702 to move in opposite directions, the inner cavity of the air storage cylinder 701 can be compressed. Then, when the pneumatic piston rod 702 moves in opposite directions and the ventilation component 704 releases the blocking effect on the inner cavity between the inner end of the air storage cylinder 701, the transparent observation plate 2 and the antibacterial dressing fixing film 3, the compressed gas in the inner cavity of the air storage cylinder 701 can smoothly enter the inner cavity between the transparent observation plate 2 and the antibacterial dressing fixing film 3.

[0037] As Figure 2As shown in the figure, on one side of the top end of the indwelling needle fixing and wearing sleeve 1, a power control group 5 is provided. On the outer side inside the indwelling needle fixing and wearing sleeve 1, a heating elastic sheet 6 is provided. The heating elastic sheet 6 is electrically connected to the power control group 5 through an electric wire.

[0038] With the above solution: By generating heat through the heating elastic sheet 6, the inside of the indwelling needle fixing and wearing sleeve 1 can be heated and insulated. At the same time, the gas inside the transparent observation plate 2 and the antibacterial dressing fixing film 3 is heated, and the antibacterial dressing fixing film 3 and the indwelling needle position are insulated.

[0039] As Figure 2 shown, the wearing component 4 includes an adjustable telescopic belt 401, a magic mother tape 402, and a magic sub-tape 403;

[0040] The adjustable telescopic belt 401 is arranged on the inner side of the bottom of the indwelling needle fixing and wearing sleeve 1. The magic mother tape 402 is arranged at the bottom of one end of the adjustable telescopic belt 401. The magic sub-tape 403 is arranged at the bottom of the other end of the adjustable telescopic belt 401.

[0041] With the above solution: By providing the magic mother tape 402 and the magic sub-tape 403, when it is necessary to wear the indwelling needle fixing and wearing sleeve 1 on the patient's arm position, the magic mother tape 402 at one end can be adhered to the magic sub-tape 403, and the indwelling needle fixing and wearing sleeve 1 can be successfully worn and fixed on the patient's arm.

[0042] As Figure 2 shown, the adjustable telescopic belt 401 is made of polyester fiber and polyurethane elastomer.

[0043] With the above solution: Through the telescopic elasticity of the adjustable telescopic belt 401, it can be adaptively adjusted and worn according to the sizes of different patients' arms.

[0044] As Figure 4 and Figure 8 shown, the ventilation component 704 includes a ventilation top pipe 7041, a blocking ring 7042, and a one-way ventilation valve flap 7043;

[0045] The ventilation top pipe 7041 is fixedly installed inside the pneumatic piston rod 702. The blocking ring 7042 is fixedly installed inside the inner cavity of the air storage cylinder 701. The one-way ventilation valve flap 7043 is arranged inside the inner cavity of the air storage cylinder 701 and is located inside the blocking ring 7042.

[0046] Adopting the above solution: By providing the ventilation push pipe 7041, when the pneumatic piston rod 702 is pushed to move towards each other, the ventilation push pipe 7041 can be simultaneously pushed to move towards each other, and then the one-way ventilation valve flap 7043 can be pushed to turn inwards. At this time, the inner cavity of the air storage cylinder 701 is communicated with the cavity between the transparent observation plate 2 and the antibacterial dressing fixing film 3 through the ventilation push pipe 7041, so that the compressed gas on the inner side of the inner cavity of the air storage cylinder 701 enters the interior of this cavity through the ventilation push pipe 7041. And through the design of the blocking ring 7042, the outside of the one-way ventilation valve flap 7043 can be blocked, so that the one-way ventilation valve flap 7043 can only be opened unidirectionally.

[0047] As Figure 5 shown, an adhesive patch 10 is provided inside the movable frame 703.

[0048] Adopting the above solution: Through the adhesive property of the adhesive patch 10, it can be adhered to the outside of the indwelling needle fixing and wearing sleeve 1. After the movable frame 703 moves towards each other, it can be fixed.

[0049] As Figure 5 shown, an absorbing component 8 is provided inside the indwelling needle fixing and wearing sleeve 1 and is located below the outside of the air storage cylinder 701. The absorbing component 8 includes a fixed rubber plate 801, a fastening suction cup 802 and a ventilation hole 803;

[0050] The fixed rubber plate 801 is fixedly installed inside the indwelling needle fixing and wearing sleeve 1 and is located at the bottom of the outer end of the air storage cylinder 701. The fastening suction cup 802 is opened inside the fixed rubber plate 801 and is communicated with the bottom end of the air storage cylinder 701. The ventilation hole 803 is fixedly installed at the bottom of the fixed rubber plate 801 and is directly below the fastening suction cup 802.

[0051] Adopting the above solution: By providing the fastening suction cup 802, when the gas inside the fastening suction cup 802 is pumped out, negative pressure acts on the fastening suction cup 802, making the bottom of the fastening suction cup 802 stick tightly to the patient's skin surface, which can improve the overall wearing and fixing effect of the indwelling needle fixing and wearing sleeve 1.

[0052] As Figure 5 and Figure 8 shown, a shielding component 9 is provided at the inner end of the movable frame 703 and is located on the inner wall of the fixed rubber plate 801. The shielding component 9 includes a shielding plate 901, a connecting spring 902 and a ventilation round hole 903;

[0053] The shielding plate 901 is fixedly installed inside the bottom of the movable frame 703. The inner end of the shielding plate 901 is elastically connected to the inner cavity of the indwelling needle fixing and wearing sleeve 1 through the connecting spring 902. The ventilation round hole 903 is opened inside the shielding plate 901.

[0054] Adopting the above solution: By providing the connecting spring 902, when the movable frame 703 is pushed to move towards each other, the shielding plates 901 can be made to compress the connecting spring 902 simultaneously towards each other. When the elastic force of the connecting spring 902 is released, it can push the shielding plates 901 and the movable frame 703 as a whole to move back to the original position.

[0055] As Figure 5 shown, the diameter of the ventilation round hole 903 is the same as that of the fastening suction cup 802.

[0056] Adopting the above solution: When the movable frame 703 pushes the shielding plates 901 towards each other so that the ventilation round holes 903 are aligned with the fastening suction cups 802, the ventilation holes 803 can be smoothly communicated with the inner cavity of the air storage cylinder 701 through the fastening suction cups 802 and the ventilation round holes 903.

[0057] As Figures 1 to 3 shown, the indwelling needle fixing and wearing sleeve 1 is made of rubber, and the transparent observation plate 2 is made of polycarbonate.

[0058] Adopting the above solution: Since rubber has the ability to deform, the indwelling needle fixing and wearing sleeve 1 can be adaptively worn according to the arms of different patients. Moreover, rubber has very low thermal conductivity, so it can provide good heat preservation. Since polycarbonate is a transparent or semi-transparent engineering plastic and also has a certain ability to deform, it can be bent or stretched within a certain range. Therefore, the transparent observation plate 2 can also deform simultaneously with the indwelling needle fixing and wearing sleeve 1.

[0059] The working principle and usage process of the present invention:

[0060] First, the indwelling needle can be inserted into the corresponding position, and then the indwelling needle fixing and wearing sleeve 1 can be worn. First, stretch the telescopic adjustment belt 401 to meet the arm sizes of different patients, and then smoothly install the whole indwelling needle fixing and wearing sleeve 1 at the position where the indwelling needle is inserted by adhering the magic mother tape 402 and the magic son tape 403. At this time, the antibacterial dressing fixing film 3 can wrap and antibacterialize the indwelling needle.

[0061] Then, it is possible to control the heating sheet 6 to smoothly generate heat, which can heat and keep warm the contact between the indwelling needle fixing and wearing sleeve 1 and the skin. Then, push the two movable frames 703 to move towards each other. At this time, due to the adhesiveness of the adhesive patch 10, the movable frames 703 can be tightly attached and fixed to the outside of the indwelling needle fixing and wearing sleeve 1. When the movable frames 703 move towards each other, they will drive the pneumatic piston rod 702 and the ventilation top pipe 7041 to move towards each other, causing the ventilation top pipe 7041 to push the one-way ventilation valve flap 7043 to turn inward and open. Then, the gas compressed on the inner side of the inner cavity of the air storage cylinder 701 will enter the inner cavities of the transparent observation plate 2 and the antibacterial dressing fixing film 3, making the inner cavity pressure increase and squeezing the transparent observation plate 2 to fully fit with the indwelling needle and the skin surface. At the same time, the heat generated by the heating sheet 6 will heat and expand the gas inside the transparent observation plate 2 and the antibacterial dressing fixing film 3, which can improve the tightness effect of the transparent observation plate 2 with the indwelling needle and the skin surface, and at the same time, the heated gas can keep warm the indwelling needle at the position of the antibacterial dressing fixing film 3.

[0062] At the same time, when the movable frames 703 move towards each other, they will synchronously push the baffle plate 901 to move towards each other. After that, when the adhesive patch 10 on the inner side of the movable frame 703 is tightly attached to the outside of the indwelling needle fixing and wearing sleeve 1, the ventilation round hole 903 will be aligned with the ventilation hole 803 of the fixed rubber plate 801, enabling the fastening suction cup 802 to be smoothly connected to the inner cavity of the air storage cylinder 701 through the ventilation hole 803. As the pneumatic piston rod 702 moves towards each other, the negative pressure on the outer side inner cavity of the air storage cylinder 701 acts on the position of the fastening suction cup 802, causing the bottom end of the fastening suction cup 802 to be tightly sucked to the patient's skin surface, thereby improving the overall wearing and fixing effect of the indwelling needle fixing and wearing sleeve 1.

[0063] Then, when it is necessary to take off the indwelling needle fixing and wearing sleeve 1, first press the antibacterial dressing fixing film 3 to make some of the gas in the inner cavities of the transparent observation plate 2 and the antibacterial dressing fixing film 3 return to the air storage cylinder 701. Then, pull the two movable frames 703 to move towards each other to release the adhesion between the adhesive patch 10 and the outside of the indwelling needle fixing and wearing sleeve 1. At this time, the elastic force of the connecting spring 902 will be released to push the baffle plate 901 to reset in the opposite direction. As the pneumatic piston rod 702 moves in the opposite direction, the gas in the outer side inner cavity of the air storage cylinder 701 will be pushed out, causing the bottom of the fastening suction cup 802 to be released from the skin surface. Finally, the magic mother tape 402 can be torn off to smoothly remove the entire indwelling needle fixing and wearing sleeve 1.

[0064] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0065] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical antibacterial dressing indwelling needle fixing assembly, characterized in that: It comprises a wearing sleeve for fixing an indwelling needle (1); A transparent observation plate (2) is arranged at the middle of the top end of the indwelling needle fixing sleeve (1); An antibacterial dressing fixing film (3) is bonded to the top and bottom surfaces of the indwelling needle fixing sleeve (1); A wearing component (4) is arranged on the inner side of the bottom end of the indwelling needle fixing wearing sleeve (1); The pneumatic pressing mechanism (7) comprises an air cylinder (701), which is fixedly installed inside the indwelling needle fixing sleeve (1) and is located outside the transparent observation plate (2). A pneumatic piston rod (702) is movably installed inside the air cylinder (701), a movable frame (703) is arranged outside the pneumatic piston rod (702), and a ventilation assembly (704) is arranged inside the pneumatic piston rod (702).

2. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: A power control group (5) is arranged on one side of the top end of the indwelling needle fixing wearable sleeve (1), and a heating spring (6) is arranged on the outside of the indwelling needle fixing wearable sleeve (1), and the heating spring (6) is connected to the power control group (5) through an electric wire.

3. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: The wearable component (4) comprises a retractable adjustment belt (401), a Velcro strap (402) and a Velcro tape (403); The telescopic adjustment belt (401) is arranged on the inner side of the bottom of the indwelling needle fixing wearable sleeve (1), the Velcro tape (402) is arranged on the bottom of the telescopic adjustment belt (401) at one end, and the Velcro tape (403) is arranged on the bottom of the telescopic adjustment belt (401) at the other end.

4. The medical antibacterial dressing indwelling needle fixing assembly according to claim 3, characterized in that: The telescopic adjustment belt (401) is made of polyester fiber and polyurethane elastomer.

5. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: The ventilation assembly (704) comprises a ventilation top pipe (7041), a blocking ring (7042) and a one-way ventilation valve flap (7043); The ventilation top pipe (7041) is fixedly installed on the inner side of the pneumatic piston rod (702), the blocking ring (7042) is fixedly installed on the inner side of the inner cavity of the air storage cylinder (701), and the one-way ventilation valve flap (7043) is arranged in the inner cavity of the air storage cylinder (701) and is located on the inner side of the blocking ring (7042).

6. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: An adhesive patch (10) is provided on the inner side of the movable frame (703).

7. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: The interior of the indwelling needle fixing sleeve (1) is provided with a suction assembly (8) located below the outer side of the air storage cylinder (701), and the suction assembly (8) includes a fixing rubber plate (801), a fastening suction cup (802) and a vent hole (803); The fixed rubber plate (801) is fixedly installed inside the indwelling needle fixing sleeve (1) and is located at the bottom of the outer end of the air storage cylinder (701). The fastening suction cup (802) is opened inside the fixed rubber plate (801) and is connected to the bottom end of the air storage cylinder (701). The vent hole (803) is fixedly installed at the bottom of the fixed rubber plate (801) and is located directly below the fastening suction cup (802).

8. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: The inner end of the movable frame (703) is provided with a shielding component (9) located on the inner wall of the fixed rubber plate (801), and the shielding component (9) comprises a shielding plate (901), a connecting spring (902) and a vent hole (903); The shielding plate (901) is fixedly mounted on the inner side of the bottom of the movable frame (703); the inner end of the shielding plate (901) is elastically connected to the inner cavity of the indwelling needle fixing sleeve (1) via a connecting spring (902); and the vent hole (903) is provided inside the shielding plate (901).

9. The medical antibacterial dressing indwelling needle fixing assembly according to claim 8, characterized in that: The diameter of the vent hole (903) is the same as the diameter of the fastening suction cup (802).

10. The medical antibacterial dressing indwelling needle fixing assembly according to claim 1, characterized in that: The indwelling needle fixing sleeve (1) is made of rubber, and the transparent observation plate (2) is made of polycarbonate.

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