Infusion apparatus needle anti-puncture device

Abstract

The utility model discloses an infusion apparatus needle anti-puncture device, and relates to the technical field of infusion apparatuses, in particular to an infusion apparatus needle anti-puncture device which comprises a needle body and a protective cylinder, a through hole penetrating through the needle body is formed in the needle body, and the needle body is composed of a connecting portion, a cylinder portion and a needle portion. The connecting part, the cylinder part and the needle part share the same central axis and are communicated with one another, and the connecting part is integrally in a hollow circular truncated cone shape; according to the puncture prevention device for the needle head of the infusion apparatus, the protection barrel is slidably connected with the barrel part of the needle body, the protection barrel can cover the needle part after sliding on the barrel part, the tip end of the needle part is located in the protection barrel, the tip end of the needle part is prevented from being exposed outside, and therefore a worker is prevented from being punctured by the tip end of the needle part. Through the cooperative arrangement of the protection cylinder and the needle body, the puncture prevention device for the infusion apparatus needle head can effectively prevent the needle head from puncturing workers.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, in particular to an infusion set needle puncture prevention device. Background Art

[0002] A disposable infusion set is a common medical consumable. After sterilization, it establishes a channel between the vein and the liquid medicine and is used for intravenous infusion. It is generally composed of eight parts: an intravenous needle or an injection needle, a needle cap, an infusion hose, a liquid medicine filter, a flow rate regulator, a drip pot, a bottle stopper puncture device, and an air filter. Some infusion sets also have injection parts and a dosing port.

[0003] After searching, in the published Chinese utility model patent application, publication number: CN212662382U, the utility model discloses a disposable infusion needle protection sleeve, including a telescopic sleeve, a clamping joint, a needle, a base, a pressure pad and a mounting cap, one end of the telescopic sleeve is fixedly connected to the upper end of the base, one end of the base is fixedly connected to the mounting cap, the pressure pad is fixedly connected to one side of the mounting cap, a gap is left between the outer side of the base and the pressure pad, the outer side of the telescopic sleeve is arranged inside the gap, the needle is fixedly connected to the upper end of the base, and the clamping joint is fixedly connected to the top of the telescopic sleeve. The disposable infusion needle protection sleeve, through the coordinated setting of the telescopic sleeve and the clamping joint, the telescopic sleeve sleeved on the outer side of the needle can be telescoped along the needle, and the clamping joint is buckled by the groove and the convex buckle, so as to play the role of encapsulating the needle by using the telescopic sleeve and the clamping joint, which can effectively prevent medical staff from being stabbed by the needle after use. However, when the prior art is used for recycling, after the bottle cork piercer is pulled out, the top of the bottle cork piercer is relatively sharp, which may easily cause injury to the operator and lead to infection.

[0004] In the published Chinese patent application, publication number: CN217510937U, patent name: A stab-proof infusion needle, although the prior art sets a connecting sleeve, and uses the connecting sleeve to achieve the bending alignment of the puncture needle body and the connecting seat, and after the sharp part of the puncture needle body is folded down, the puncture needle body can be fixed by the tape body, thereby avoiding the puncture needle body from causing harm to the operator after rebounding, and achieving the effect of preventing the bottle stopper puncture from causing harm to the operator. However, in the prior art solution, the connecting sleeve and the puncture needle body and the connecting seat are all in a sliding connection, and the sealing effect of the sliding connection is poor. The drug solution will leak out at the connection between the connecting sleeve, the puncture needle body, and the connecting seat, and the drug solution will leak out at the connection between the connecting sleeve, the puncture needle body, and the connecting seat, and the drug solution will be injected due to the high pressure, which accelerates the leakage of the drug solution. Although the prior art can prevent needle punctures, the prior art cannot effectively guarantee the effective injection of the drug solution.

[0005] In summary, in order to solve the problems of needle sticks injuring medical staff and drug leakage in the prior art, the present application is specially proposed to solve the problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides an infusion set needle puncture prevention device, which solves the problems raised in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: an infusion needle anti-puncture device, comprising a needle body and a protective tube, the needle body is provided with a through hole running through it, the needle body is composed of a connecting part, a tube part, and a needle part, the connecting part, the tube part, and the needle part share the same central axis and are interconnected, the connecting part is in the shape of a hollow truncated cone as a whole, one end of the tube part is fixedly connected to the end where the small-area bottom surface of the connecting part is located, the other end of the tube part is fixedly connected to one end of the needle part, and the fixed connection between the tube part and the needle part is in the shape of a bundle that gradually shrinks in steps toward the side where the needle part is located; the protective tube is slidably arranged on the outer side wall of the tube part of the needle body, the protective tube covers the needle part after sliding toward the side where the needle part is located, and the tip of the needle part is located in the protective tube; an antibacterial film is arranged on the inner side wall of the protective tube at the end away from the connecting part.

[0010] Optionally, a first groove is formed on the outer wall of one end of the barrel portion close to the connecting portion, and a second groove is formed on the outer wall of one end of the barrel portion close to the needle portion.

[0011] Optionally, a first raised strip and a second raised strip are respectively provided on the inner side walls of both ends of the protective tube.

[0012] Optionally, a limiting protrusion is fixedly connected to the outer wall of one end of the barrel portion close to the needle portion.

[0013] Optionally, a sliding groove is axially provided on the wall of the protective tube, and both ends of the sliding groove are L-shaped.

[0014] Optionally, the limiting protrusion is located in a slide groove of the protective tube, and the limiting protrusion limits and blocks the protective tube at both ends of the slide groove.

[0015] Optionally, the protective tube is made of plastic, the connecting portion and the tube portion of the needle body are made of plastic, and the needle portion of the needle body is made of metal material.

[0016] (III) Beneficial effects

[0017] The utility model provides an infusion set needle puncture prevention device, which has the following beneficial effects:

[0018] 1. The infusion needle stab-proof device has a protective tube that is slidably connected to the barrel of the needle body. The protective tube can cover the needle after sliding on the barrel, so that the tip of the needle is located inside the protective tube, avoiding the tip of the needle from being exposed to the outside, thereby preventing the tip of the needle from causing stab injuries to the staff. Through the coordinated arrangement of the protective tube and the needle body, the infusion needle stab-proof device can effectively prevent the needle from causing stab injuries to the staff.

[0019] 2. In the infusion needle anti-puncture device, the connecting part, the barrel part and the needle part are an integrated structure. When injecting liquid medicine, the liquid medicine flows in the connecting part, the barrel part and the needle part of the needle body, and the liquid medicine cannot leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a schematic cross-sectional view of a needle puncture prevention device for an infusion set of the utility model;

[0022] Figure 2 This is a schematic cross-sectional view of a needle puncture prevention device for an infusion set of the utility model;

[0023] Figure 3 This is a schematic cross-sectional view of a needle body of a needle puncture prevention device for an infusion set according to the utility model;

[0024] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 5 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 6 This is a schematic cross-sectional view of a protective tube of a needle puncture prevention device for an infusion set of the utility model;

[0027] Figure 7 This is a three-dimensional structural schematic diagram of a needle puncture prevention device for an infusion set of the utility model;

[0028] Figure 8 This is a three-dimensional structural schematic diagram of a needle puncture prevention device for an infusion set of the utility model;

[0029] Fig. 9This is a schematic diagram of the three-dimensional structure of a needle body of a needle puncture prevention device for an infusion set of the utility model;

[0030] Fig.10 The utility model is a three-dimensional structural schematic diagram of a second embodiment of a needle puncture protection device for an infusion set.

[0031] In the figure: 1. needle body; 101. connecting part; 102. barrel; 103. needle; 104. first groove; 105. second groove; 2. protective barrel; 201. first raised strip; 202. second raised strip; 203. slide groove; 204. limiting protrusion; 3. antibacterial film. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0034] Example 1: Please refer to Figures 1 to 9 The utility model provides a technical solution: an infusion needle anti-puncture device, comprising a needle body 1 and a protective tube 2. A through hole is opened inside the needle body 1, and the needle body 1 is composed of a connecting part 101, a barrel 102, and a needle 103. The connecting part 101, the barrel 102, and the needle 103 have the same central axis and are interconnected. The connecting part 101 is in the shape of a hollow truncated cone as a whole, one end of the barrel 102 is fixedly connected to the end where the small area bottom surface of the connecting part 101 is located, and the other end of the barrel 102 is fixedly connected to one end of the needle 103, and the fixed connection between the barrel 102 and the needle 103 is in the shape of a bundle that gradually shrinks in steps toward the side where the needle 103 is located.

[0035] The protective tube 2 is slidably disposed on the outer wall of the barrel 102 of the needle body 1, and the protective tube 2 covers the needle 103 after sliding toward the side where the needle 103 is located, and the tip of the needle 103 is located in the protective tube 2. An antibacterial film 3 is disposed on the inner wall of the protective tube 2 at one end away from the connecting portion 101.

[0036] Among them, the needle body 1 is an integral structure, which can effectively prevent the drug liquid from leaking from the needle body 1. The connecting part 101 is used to facilitate the detachable connection with the injection nozzle end of the syringe. In the specific implementation, the end of the connecting part 101 away from the barrel 102 is sleeved on the injection nozzle end of the syringe. The barrel 102 is used to connect the connecting part 101 and the needle part 103 up and down, so that the three form an integral structure. At the same time, the barrel 102 is used to support the protective cylinder 2 so that the protective cylinder 2 can slide on the outer wall of the barrel 102. The needle part 103 is also a needle, and the needle part 103 can pierce the skin to complete the injection of the drug liquid. The protective cylinder 2 is used to cover the needle part 103, so that the needle part 103 is in a shielded state to prevent the tip of the needle part 103 from accidentally stabbing medical staff. The antibacterial film 3 is used to cover the port of the protective cylinder 2 before injecting the liquid to prevent dust or bacteria from entering the inside of the protective cylinder 2, thereby preventing dust or bacteria from contaminating the needle part 103.

[0037] Specifically, a first groove 104 is formed on the outer wall of one end of the barrel 102 close to the connecting portion 101, and a second groove 105 is formed on the outer wall of one end of the barrel 102 close to the needle portion 103. A first protrusion 201 and a second protrusion 202 are formed on the inner walls of both ends of the protective barrel 2, respectively.

[0038] Among them, the first groove 104 and the second groove 105 are used to adapt to the first raised strip 201 and the second raised strip 202. The barrel 102 can limit and fix the first raised strip 201 or the second raised strip 202 through the first groove 104 and the second groove 105, thereby realizing the limit and fixation of the protective tube 2, so that the protective tube 2 is effectively fixed.

[0039] Specifically, the protective tube 2 is made of plastic, the connecting portion 101 and the tube 102 of the needle body 1 are made of plastic, and the needle 103 of the needle body 1 is made of metal. One end of the needle 103 is embedded and fixedly installed on one end of the tube 102, and the two are connected to each other.

[0040] The state of the infusion needle anti-puncture device when not injecting liquid medicine is: Figure 1 , Figure 8The first raised strip 201 is located at the second groove 105, and the protective tube 2 is fixed to the tube 102 through the first raised strip 201 and the second groove 105. The protective tube 2 covers the needle 103, and the antibacterial film 3 seals the inside of the protective tube 2. The antibacterial film 3 forms a relatively clean space inside the protective tube 2 by adopting a sealing method.

[0041] When the medical staff uses the infusion needle anti-puncture device to inject the liquid medicine: the medical staff installs the infusion needle anti-puncture device shown in the present application onto the syringe, specifically, installs the connecting part 101 onto the injection nozzle end of the syringe, and slides the protective tube 2 along the barrel 102 toward the end where the connecting part 101 is located, the first raised strip 201 disengages from the second groove 105, and the protective tube 2 drives the first raised strip 201 to move to the first groove 104, and the first raised strip 201 is fixed to the first groove 104. At the same time, the tip of the needle 103 pierces the antibacterial film 3. After the needle 103 is completely exposed, the medical staff uses the syringe and the infusion needle anti-puncture device to inject the liquid medicine into the patient. After the injection of the liquid medicine is completed, slide the protective tube 2 to reset the protective tube 2 to the initial state (that is, the state of the infusion needle anti-puncture device when the liquid medicine is not injected).

[0042] Example 2: Please refer to Fig.10 The difference between this embodiment and the first embodiment is that a limiting protrusion 204 is fixedly connected to the outer wall of the end of the barrel 102 close to the needle 103. A sliding groove 203 is axially provided on the wall of the protective barrel 2, and the two ends of the sliding groove 203 are L-shaped. The limiting protrusion 204 is located in the sliding groove 203 of the protective barrel 2, and the limiting protrusion 204 blocks the protective barrel 2 at the two ends of the sliding groove 203.

[0043] The medical staff installs the infusion needle puncture prevention device shown in the present application onto the syringe. Specifically, the connecting portion 101 is installed onto the injection nozzle end of the syringe. The medical staff partially rotates the protective cylinder 2 so that the limiting protrusion 204 no longer limits one end of the slide groove 203. Then, the protective cylinder 2 is slid along the cylinder 102 toward the end where the connecting portion 101 is located. After the sliding is completed, the protective cylinder 2 is partially rotated so that the limiting protrusion 204 limits the other end of the slide groove 203, thereby achieving the limiting fixation of the limiting protrusion 204 on the protective cylinder 2. At the same time, the tip of the needle 103 pierces the antibacterial film 3. After the needle 103 is completely exposed, the medical staff uses the syringe and the infusion needle puncture prevention device to inject liquid medicine into the patient. After the injection of the liquid medicine is completed, the sliding protective cylinder 2 is rotated to reset the protective cylinder 2 to the initial state.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An infusion set needle puncture prevention device, characterized in that: The invention comprises a needle body (1) and a protective tube (2), wherein a through hole is provided inside the needle body (1), and the needle body (1) is composed of a connecting portion (101), a tube portion (102), and a needle portion (103); the connecting portion (101), the tube portion (102), and the needle portion (103) share the same central axis and are interconnected; the connecting portion (101) is in the shape of a hollow truncated cone as a whole; one end of the tube portion (102) is fixedly connected to the end where the small bottom surface of the connecting portion (101) is located; the other end of the tube portion (102) is fixedly connected to one end of the needle portion (103); and the fixed connection between the tube portion (102) and the needle portion (103) is in the shape of a bundle that gradually contracts in steps toward the side where the needle portion (103) is located; The protective tube (2) is slidably arranged on the outer wall of the tube portion (102) of the needle body (1), and the protective tube (2) covers the needle portion (103) after sliding toward the side where the needle portion (103) is located, and the tip of the needle portion (103) is located inside the protective tube (2); an antibacterial film (3) is arranged on the inner wall of the protective tube (2) at one end away from the connecting portion (101).

2. The device for preventing needle puncture of an infusion set according to claim 1, characterized in that: A first groove (104) is provided on the outer wall of one end of the barrel (102) close to the connecting portion (101), and a second groove (105) is provided on the outer wall of one end of the barrel (102) close to the needle portion (103).

3. The device for preventing needle puncture of an infusion set according to claim 2, characterized in that: A first protruding strip (201) and a second protruding strip (202) are respectively arranged on the inner side walls of the two ends of the protective tube (2).

4. The device for preventing needle puncture of an infusion set according to claim 1, characterized in that: A limiting protrusion (204) is fixedly connected to the outer wall of one end of the barrel (102) close to the needle (103).

5. The device for preventing needle puncture of an infusion set according to claim 4, characterized in that: A sliding groove (203) is provided on the wall of the protective tube (2) along the axial direction, and both ends of the sliding groove (203) are L-shaped.

6. The device for preventing needle puncture of an infusion set according to claim 5, characterized in that: The limiting protrusion (204) is located in the slide groove (203) of the protection tube (2), and the limiting protrusion (204) blocks the protection tube (2) at both ends of the slide groove (203).

7. The device for preventing needle puncture of an infusion set according to claim 1, characterized in that: The protective tube (2) is made of plastic, the connecting portion (101) and the tube portion (102) of the needle body (1) are made of plastic, and the needle portion (103) of the needle body (1) is made of metal material.

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