Self-locking type puncture-proof safety infusion apparatus and using method thereof

Abstract

The invention discloses a self-locking type puncture-proof safety infusion apparatus and a using method thereof, and belongs to the technical field of medical instruments. The self-locking type puncture-proof safety infusion apparatus comprises a needle and a protection assembly of the needle, wherein the needle comprises a needle head and a needle handle used for fixing the needle head; the protection assembly comprises a shell, a movable part and a fixed part, the movable part and the fixed part are arranged at the two ends in the shell respectively and matched, the fixed part is fixedly connected with the shell, the movable part is fixedly connected with the needle handle, the movable part is in slidable contact connection with the shell, and the movable part and the fixed part are connected through an elastic assembly and can be clamped with each other. According to the self-locking type puncture-proof safety infusion apparatus and the using method thereof, when the needle head is exposed, the operation can be completed by pushing the fins to lock the first switch plate and the second switch plate, when a needle instrument needs to be withdrawn, the needle instrument can be withdrawn immediately only by simply pressing the switches on the two sides, the needle puncture injury during infusion or the needle puncture injury caused by mistaken touch can be effectively prevented, and the self-locking type puncture-proof safety infusion apparatus is convenient and safe to use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a self-locking stab-proof safety infusion set and its usage method. Background Art

[0002] In medical clinics, intravenous infusion is the most common method in the treatment of patients. The infusion link is usually completed by a plastic-steel needle at the upper end of the infusion set puncturing the rubber stopper at the port of the infusion bottle, and the stainless-steel needle at the lower end puncturing the skin to complete the intravenous injection, so as to perform intravenous infusion. However, after the intravenous infusion is completed, the needle pulled out from the patient's blood vessel by the nurse is exposed outside, which is easy to stab the nursing staff. Especially when the patient has an infectious disease, it will bring the risk of infection to the nursing staff.

[0003] Currently, after the traditional infusion set completes the infusion, the needle is usually in an exposed state and lacks effective stab-proof protection measures. Although some infusion sets are equipped with protective structures, their protective devices have many drawbacks in actual operation.

[0004] The patent with the application number 202410766127.8 discloses a disposable filter infusion set for preventing needle stick injuries, which involves a needle-stab prevention intravenous injection mechanism including a needle-stab prevention outer sleeve assembly and an injection adjustment assembly. The injection adjustment assembly is arranged inside the needle-stab prevention outer sleeve assembly. When in use, by pulling the rectangular plate of the needle-stab prevention outer sleeve assembly, the movable column and the clamping column are driven to move outwards together. The first spring is stretched under the pulling of the movable column until the clamping column moves out from the clamping hole, and then the rectangular plate is pushed forward. The rectangular plate drives the movable column and the clamping column to move forward together. The movable column moves forward along the sliding groove of the injection adjustment assembly, and the clamping column moves forward along the limiting plate. The movable column drives the cylinder to move forward. The cylinder drives the hollow needle seat and the stainless-steel needle to move forward together. The cylinder drives the telescopic catheter to be stretched until the clamping column moves to the front clamping hole. At this time, the stainless-steel needle also completely moves out of the cylindrical barrel. Press the rectangular plate, and the rectangular plate drives the movable column and the clamping column to move inwards together, so that the clamping column is clamped into the current clamping hole, that is, the stainless-steel needle is fixed.

[0005] The problem with it is that the rectangular plates on both sides of the movable column need to be pulled out, slid, and pressed simultaneously, and this process needs to be completed with both hands, but medical staff need to hold the syringe. Therefore, the needle-stab prevention intravenous injection mechanism of this patent is difficult to be simply completed by one person. Although it can prevent stabbing, it increases the complexity of syringe use.

[0006] The patent with application number 201920051579.2 discloses a needle protection assembly, a needleless infusion needle and an infusion set. The needle protection assembly includes a needle, a housing and an elastic member. Among them, the elastic member is installed in the installation cavity, the elastic member is sleeved on the needle, and the needle has a first movement state and a second movement state under the elastic force of the elastic member. Among them, the first movement state is that the needle handle moves along the guide groove and is accommodated in the first limit groove, and the needle can penetrate through the puncture port. The second movement state is that the needle handle disengages from the first limit groove and moves along the guide groove, so that the needle is accommodated in the installation cavity, so that the needle can be placed in the installation cavity after use, avoiding the exposure of the used needle and preventing the needle from accidentally stabbing others, effectively preventing blood infection.

[0007] The problem is that when the needle is retracted, under the restoring force of the spring, the needle handle can move along the guide groove in a direction away from the first limit groove. Although there is a stop portion, the stop portion is to prevent the needle handle from moving out by moving away from the puncture port side and cannot prevent the needle handle from moving towards the puncture port side. Therefore, it is easy for the needle to be exposed from the puncture port due to accidental contact with the wing by external force, resulting in stabbing. Summary of the Invention

[0008] The purpose of the present invention is to provide a self-locking anti-stabbing safety infusion set and its use method. The infusion set can automatically, accurately and reliably lock and protect the needle, fundamentally eliminating the risk of needle stick injuries to medical staff and comprehensively protecting the occupational safety of medical staff.

[0009] To achieve the above purpose, the present invention provides a self-locking anti-stabbing safety infusion set, including a needle and a protection assembly of the needle. The needle includes a needle tip and a needle handle for fixing the needle tip; the protection assembly includes a housing, a moving part and a fixed part which are respectively arranged at both ends in the housing and cooperate with each other. The fixed part is fixedly connected to the housing, the moving part is fixedly connected to the needle handle, the moving part and the housing are in a slidable contact connection, and the moving part and the fixed part are connected by an elastic component and can be mutually locked.

[0010] Preferably, the needle tip is a hollow metal needle, the needle handle is a hollow structure, the needle tip and the needle handle are embedded and connected, and the other side of the needle handle is an infusion tube. The liquid flows into the needle tip after passing through the infusion tube and the needle handle.

[0011] Preferably, one side of the needle handle is provided with a wing, the needle handle and the wing are integrally formed, and the thickness of the wing is 0.2 mm.

[0012] Preferably, the needle handle is provided with a protrusion, and a groove corresponding to the protrusion is arranged on the moving part 2. The needle handle and the moving part are fixedly connected through the cooperation of the protrusion and the groove.

[0013] Preferably, the housing is provided with a first sliding groove for the wing to slide.

[0014] Preferably, one side of the fixing part of the outer shell is fixedly connected with a rubber head, and a cross-shaped opening is provided at the center of the rubber head.

[0015] Preferably, the moving part includes a switch, a first switch board fixedly connected to the switch, and a moving part body. The moving part body includes symmetrically arranged T-shaped plates and a connecting block fixedly connected to the needle handle. The T-shaped plates and the connecting block are of an integral structure; The groove is arranged on the side of the connecting block close to the needle handle; The first switch board is rotatably connected to the T-shaped plate through a rotating shaft, and a second spring is arranged between the first switch board and the T-shaped plate; A second sliding groove for sliding the switch is provided on the outer shell.

[0016] Preferably, the fixing part includes a second switch board corresponding to the first switch board and a fixing part body. The fixing part body is of a circular ring structure, and the second switch boards are symmetrically arranged on both sides of the fixing part body.

[0017] Preferably, the ends of the first switch board and the second switch board are in the shape of hooks, and the hooks at the ends of the first switch board and the second switch board can be correspondingly locked.

[0018] Second, the present invention provides a method for using the above self-locking anti-stabbing safety infusion set, including: S1. Push the wing along the first sliding groove towards the fixing part. The moving part moves towards the fixing part driven by the needle handle. When the moving part moves to the position where the first switch board and the second switch board are in contact, the end of the second switch board applies pressure to the end of the first switch board and pushes the first switch board to rotate. Continue to push the wing until the ends of the first switch board and the second switch board are staggered. Then, the first switch board resets under the action of the second spring, and the first switch board and the second switch board complete the clamping, and the needle device is exposed; S2. Press the switch. The switch drives the first switch board to move downwards, so that the first switch board and the second switch board are disengaged from the clamped state. After the first switch board and the second switch board are completely separated, release the switch. Under the restoring force of the first spring, the first spring pushes the moving part to reset, and the needle device is retracted.

[0019] Therefore, the self-locking anti-stabbing safety infusion set and the using method thereof of the present invention have the following beneficial effects: (1) During the actual use of the infusion set of the present invention, through the pushing action of the wing piece, the needle and the moving part are driven to move in the direction of the fixed part. A clamping mechanism is provided between the moving part and the fixed part to firmly fix the needle and expose the needle. When the needle needs to be retracted, the operator only needs to simply press a switch to release the clamping state between the moving part and the fixed part. In this way, under the restoring force of the spring, the needle can be quickly retracted, and the whole process is simple and convenient. This design effectively prevents the stabbing accidents that may occur during use.

[0020] (2) In the infusion set of the present invention, when the needle needs to be exposed for infusion operation, the operator needs to continuously push the wing piece until the clamping between the moving part and the fixed part is achieved. This design takes into account that in case of accidental touch, if the force of accidental touch is not enough to form a clamping between the moving part and the fixed part, the spring will immediately come into play and quickly drive the needle to retract. Such a mechanism can effectively prevent needle stick injuries caused by accidental touch, thus improving the safety of use.

[0021] (3) In the infusion set of the present invention, a rubber head is specially designed on the protection component. This design can not only provide additional protection for the various components inside the protection component to prevent them from being damaged by the outside world, but also effectively block the needle tip in case of accidental touch causing the needle tip to move outwards. Due to the elasticity of the rubber head, it can prevent the needle tip from being easily exposed, thus avoiding potential needle stick injuries.

[0022] (4) The self-locking anti-stabbing safety infusion set of the present invention has a simple design and convenient operation, and at the same time, its safety has been significantly improved. Due to its easy-to-understand and master usage method and effective measures in preventing needle stick injuries, the infusion set is not only suitable for medical professionals, but also convenient for patients and their families to use in home care, so it has wide popularization value.

[0023] The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. Description of the Drawings

[0024] In order to more clearly illustrate the technical solution of the embodiments of the present invention, the accompanying drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the self-locking anti-stabbing safety infusion set of the embodiments of the present invention; Figure 2 Schematic diagram of the needle retraction state of the self-locking anti-stabbing safety infusion set according to an embodiment of the present invention; Figure 3 Schematic diagram of the needle exposure state of the self-locking anti-stabbing safety infusion set according to an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the moving part and the fixed part of the self-locking anti-stabbing safety infusion set according to an embodiment of the present invention.

[0026] Reference numerals: 1. Needle; 2. Protection component; 101. Needle tip; 102. Needle handle; 103. Flap; 104. Infusion tube; 105. Protrusion; 201. Outer shell; 202. Moving part; 203. Fixed part; 204. First spring; 205. First chute; 206. Rubber head; 211. Switch; 212. First switch plate; 213. T-shaped plate; 214. Connecting block; 215. Rotating shaft; 216. Second spring; 221. Second switch plate; 222. Fixed part body. Detailed implementation manners

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0029] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "thickness", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, which can be the communication inside two elements or the interaction relationship between two elements; it can be an electrical connection or an electric connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1 The present invention relates to a self-locking stab-resistant safety infusion set, which comprises a needle 1 and a protection assembly 2 for the needle 1, and its structure is as Figure 1 shown.

[0034] The needle 1 is mainly composed of a needle tip 101 and a needle handle 102. The needle tip 101 is designed as a hollow metal needle, and its material selection can be durable stainless steel. The needle handle 102 is also designed as a hollow structure to facilitate the embedded connection between the needle tip 101 and the needle handle 102 to ensure firmness. One end of the needle handle 102 is connected to an infusion tube 104, so that the liquid can smoothly flow into the needle tip 101 through the infusion tube 104 and the needle handle 102. On the other side of the needle handle 102, a wing 103 is designed. The wing 103 and the needle handle 102 are integrally formed. Such a design not only enhances the structural stability but also facilitates the operation of medical staff.

[0035] The design feature of the wing 103 is that it can make the operation of the needle 1 more convenient. Through the pinching action of the fingers, the needle 1 can be easily controlled. During actual use, simply gently pinch the wing 103, and the needle tip 101 can be accurately inserted into the patient's blood vessel without error. In addition, the thickness of the wing 103 is carefully designed to be 0.2 mm. This thickness is neither too thick to affect the feel nor too thin to be difficult to hold, thus ensuring the comfort and accuracy during medical operations.

[0036] As Figure 2 shown, in the normal state, the needle tip 101 of the needle 1 is accommodated in the protection component 2.

[0037] As Figures 1 to 4 shown, the protection component 2 includes a housing 201, and a movable part 202 and a fixed part 203 that can cooperate with each other are configured inside the housing 201. A first spring 204 is fixedly connected between the movable part 202 and the fixed part 203.

[0038] The movable part 202 and the fixed part 203 are respectively arranged at both ends of the housing 201. Among them, the movable part 202 is fixedly connected to the needle handle 102 of the needle 1. In this specific embodiment, the movable part 202 and the needle handle 102 of the needle 1 are connected by a mating snap connection method. The surface of the needle handle 102 is designed with a protrusion 105, and a groove is provided at the corresponding position of the movable part 202. These two structures can cooperate with each other and be connected together, thereby realizing the fixed connection between the needle handle 102 and the movable part 202. During actual use, the movable part 202 and the needle handle 102 can also be connected by other fixing methods, such as conventional fixing methods like hot melt adhesive fixing, as long as the movable part 202 and the needle handle 102 are fixedly connected together to ensure the stability and functionality of the entire device.

[0039] A first sliding groove 205 for the wing 103 to slide is provided on the housing 201. When connecting the needle 1 and the protection component 2, first adjust so that the wing 103 and the first sliding groove 205 are on the same side.

[0040] A rubber head 206 is fixedly connected to one side of the fixed part 203 of the housing 201. A cross-shaped opening (not shown in the figure) is provided at the center of the rubber head 206, and the opening gap is equal to or smaller than the tip of the needle tip 101. During use, under the pressure of the needle tip, the cross-shaped opening is pushed open, and the needle tip 101 is exposed.

[0041] As Figures 1~4 shown, the movable part 202 includes a switch 211, a first switch board 212 fixedly connected to the switch 211, and a movable part body. The movable part body includes symmetrically arranged T-shaped plates 213 and a connecting block 214 fixedly connected to the needle handle 102. The T-shaped plates 213 and the connecting block 214 are an integral structure.

[0042] The first switch plate 212 is rotatably connected to the T-shaped plate 213. In this embodiment, the first switch plate 212 is rotatably connected to the T-shaped plate 213 through a rotating shaft 215. A second spring 216 is provided between the first switch plate 212 and the T-shaped plate 213.

[0043] A second sliding groove for sliding the switch is provided on the outer shell 201, and the second sliding groove is not shown in the figure.

[0044] The fixing part 203 includes a second switch plate 221 corresponding to the first switch plate 212 and a fixing part body 222. The fixing part body 222 is of an annular structure, and the second switch plates 221 are symmetrically arranged on both sides of the fixing part body 222.

[0045] The ends of the first switch plate 212 and the second switch plate 221 are in the shape of hooks, and the ends of the first switch plate 212 and the second switch plate 221 can be correspondingly locked.

[0046] A using method of a self-locking puncture-proof safety infusion set, as Figure 2 shown, is the initial connection state of the needle 1 and the protection component 2. In this state, the needle tip 101 is accommodated in the protection component 2.

[0047] During use, the needle 1 is pushed by holding the wing 103, thereby driving the moving part 202 to move towards the fixing part 203. Since the infusion set is a disposable device and there is no need to consider the wear and tear of multiple uses, the connection between the moving part 202 and the outer shell 201 is a contact connection. Specifically, the moving part body 202 is in contact connection with the outer shell 201, and the moving part 202 can slide back and forth along the outer shell 201 under the action of an external force.

[0048] When the first switch plate 212 contacts the second switch plate 221, continue to push the wing 103. Since the second switch plate 221 is a fixed structure, the second switch plate 221 applies pressure to the first switch plate 212, and the first switch plate 212 moves downward and compresses the second spring 216; when the ends of the first switch plate 212 and the second switch plate 221 are staggered, the hooks at the ends of the first switch plate 212 and the second switch plate 221 are clamped and locked, fixedly connecting the moving part 202 and the fixing part 203. The state at this time is as shown in the appendix Figure 3 shown, and the needle tip 101 of the needle 1 is exposed.

[0049] After the infusion is completed and the needle tip 101 needs to be retracted, press the switch 211. The switch 211 drives the first switch plate 212 to move downward, so that the first switch plate 212 is disengaged from the clamped state with the second switch plate 221. When the first switch plate 212 is completely separated from the second switch plate 221, release the switch 211. Under the restoring force of the first spring 204, the first spring 204 pushes the moving part 202 to reset, and at this time it returns toFigure 2 In the state shown, the needle 101 is retracted.

[0050] Therefore, for a self-locking stab-proof safety infusion set and its using method of the present invention, when the needle needs to be exposed, pushing the wing plate can complete it. However, under the action of the first switch plate and the second switch plate and the spring elasticity, the force during accidental touch is far from reaching the degree to lock the first switch plate and the second switch plate; even if the wing plate is accidentally touched and the needle moves slightly, the tip of the needle will not be exposed under the action of the rubber head, avoiding the risk of stabbing caused by accidental touch; and when the needle needs to be retracted, simply pressing the switches on both sides can retract it immediately, which is convenient and safe to use.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A self-locking puncture-proof safety infusion set, comprising a needle and a needle protection assembly, characterized in that: The needle tool comprises a needle and a needle handle for fixing the needle; The protection component includes a shell, a movable part and a fixed part respectively arranged at two ends of the shell to cooperate with each other, the fixed part is fixedly connected to the shell, the movable part is fixedly connected to the needle handle, the movable part and the shell are in a slidable contact connection, and the movable part and the fixed part are connected by an elastic component and can be clamped to each other.

2. A self-locking puncture-proof safety infusion set according to claim 1, characterized in that: The needle is a hollow metal needle, the needle handle is a hollow structure, the needle and the needle handle are embedded and connected, and the other side of the needle handle is an infusion tube. The liquid flows into the needle through the infusion tube and the needle handle.

3. A self-locking puncture-proof safety infusion set according to claim 1, characterized in that: A wing is provided on one side of the needle handle, the needle handle and the wing are integrally formed, and the thickness of the wing is 0.2 mm.

4. A self-locking puncture-proof safety infusion set according to claim 1, characterized in that: The needle handle is provided with a protrusion, and the movable part 2 is provided with a groove corresponding to the protrusion. The needle handle and the movable part are fixedly connected through the cooperation of the protrusion and the groove.

5. A self-locking puncture-proof safety infusion set according to claim 1 or 3, characterized in that: The shell is provided with a first sliding groove for the wing to slide.

6. A self-locking puncture-proof safety infusion set according to claim 1, characterized in that: A rubber head is fixedly connected to one side of the fixing part of the shell, and a cross-shaped opening is arranged at the center of the rubber head.

7. A self-locking puncture-proof safety infusion set according to claim 1 or 4, characterized in that: The moving part includes a switch, a first switch plate fixedly connected to the switch, and a moving part body, the moving part body includes a symmetrically arranged T-shaped plate and a connecting block fixedly connected to the needle handle, the T-shaped plate and the connecting block are an integrated structure; The groove is arranged on a side of the connecting block close to the needle handle; The first switch plate is rotatably connected to the T-shaped plate via a rotating shaft, and a second spring is provided between the first switch plate and the T-shaped plate; The shell is provided with a second sliding groove for sliding the switch.

8. A self-locking, puncture-proof safety infusion set according to claim 1 or 7, characterized in that: The fixing part comprises a second switch plate arranged corresponding to the first switch plate and a fixing part body. The fixing part body is a circular ring structure, and the second switch plates are symmetrically arranged on both sides of the fixing part body.

9. A self-locking puncture-proof safety infusion set according to claim 7 or 8, characterized in that: The ends of the first switch plate and the second switch plate are hook-shaped, and the hooks at the ends of the first switch plate and the second switch plate can be locked correspondingly.

10. A method for using the self-locking stab-proof safety infusion set according to any one of claims 1 to 9, characterized in that: include: S1, push the wing to move along the first slide groove toward the fixed part, the movable part moves toward the fixed part under the drive of the needle handle, when the movable part moves to the first switch plate and the second switch plate are in contact, the end of the second switch plate applies pressure to the end of the first switch plate and pushes the first switch plate to rotate, and the wing is pushed until the ends of the first switch plate and the second switch plate are interlaced, the first switch plate is reset under the action of the second spring, the first switch plate and the second switch plate are connected, and the needle is exposed; S2. Press the switch, and the switch drives the first switch plate to move downward, so that the first switch plate and the second switch plate are out of the clamping state. After the first switch plate and the second switch plate are completely separated, release the switch. Under the action of the restoring force of the first spring, the first spring pushes the moving part to reset, and the needle is retracted.

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