Anti-needling protection device

Abstract

The utility model discloses an anti-puncturing protection device which comprises a protection mechanism and a puncturing mechanism. The puncture mechanism comprises a needle tube penetrating through the protection mechanism and a needle handle arranged on the needle tube, and a protruding part is arranged at a needle tip; the protection mechanism comprises a shell assembly, a sliding assembly arranged in the shell assembly and a limiting piece. The sliding assembly abuts against the periphery of the needle tube, the limiting piece is arranged on the needle tube in a sleeving mode, after the needle tube completes puncturing, the shell assembly is pushed, the protruding part enters the shell assembly, the sliding assembly slides and seals the penetrating hole of the shell assembly, and the protruding part is limited in the shell assembly through the limiting piece. The shell assembly is sleeved on the needle tube, the shell assembly is moved to enable the needle tip to enter the shell assembly, the sliding assembly is separated from the needle tube, the sliding assembly moves towards the preset direction and seals the through hole of the shell assembly, and the protruding part is clamped on the limiting piece, so that the shell assembly is prevented from being separated from the needle tube, and the effect of shielding the needle tip is achieved; the purpose of protecting medical staff and patients is achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an anti-needle puncture protection device. Background Art

[0002] An arteriovenous puncture needle is an interventional radiology device consisting primarily of a catheter assembly and a puncture needle assembly. The puncture needle is typically a rigid tube with a sharp tip, primarily used to puncture the skin and blood vessels. The catheter assembly is primarily used to establish a blood pathway during intravenous infusion or arteriovenous blood purification.

[0003] At present, one end of the puncture needle is the needle tip, the needle blade faces upward, and the blood vessel is punctured at a suitable angle. After the puncture is completed, the puncture needle assembly is pulled out and the conical connector of the catheter assembly is firmly connected to the blood circuit tube.

[0004] However, after the puncture is completed, the needle tip of the current ordinary puncture needle is exposed to the air, which occasionally "stabs" medical staff and patients, posing risks to medical staff and patients. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide an anti-needle puncture protection device, which aims to solve the problem that after the current ordinary puncture needle completes the puncture, the needle tip is exposed to the air, occasionally "stabbing" medical staff and patients, posing risks to medical staff and patients.

[0006] To achieve the above-mentioned object, the present invention is implemented through the following technical solutions: an anti-needle puncture protection device, the anti-needle puncture protection device comprising a protection mechanism and a puncture mechanism provided through the protection mechanism;

[0007] The puncture mechanism comprises a needle tube inserted into the protective mechanism and a needle handle arranged on the needle tube away from the needle tip, wherein the needle tube is provided with a raised portion near the needle tip;

[0008] The protection mechanism includes a housing assembly sleeved on the needle tube, a sliding assembly and a limiting piece arranged in the housing assembly;

[0009] In which, the sliding component rests against the outer periphery of the needle tube, and the limiting plate is sleeved on the needle tube. When the needle tube completes puncture, it pushes the shell component to allow the protrusion to enter the shell component. The sliding component slides and seals the perforation of the shell component, and the protrusion is limited to the shell component by the limiting plate.

[0010] In summary, the utility model proposes an anti-needle puncture protection device, which is sleeved on the needle tube by using a shell assembly. When dialysis is completed, the shell assembly is moved to allow the needle tip to enter the shell assembly, and the sliding assembly is separated from the needle tube, and then moves in a preset direction and seals the perforation of the shell assembly. At the same time, due to the clamping effect of the protrusion and the limiting plate, the shell assembly is prevented from being separated from the needle tube, which plays a role in shielding the needle tip and achieves the purpose of protecting medical staff and patients. Specifically, the anti-needle puncture protection device includes a protection mechanism and a puncture mechanism inserted in the protection mechanism. The puncture mechanism includes a needle tube inserted in the protection mechanism, and a needle handle provided on the needle tube away from the needle tip, and a protrusion is provided on the needle tube near the needle tip; the protection mechanism includes a shell assembly sleeved on the needle tube, a sliding assembly and a limiting plate provided in the shell assembly. Since the sliding assembly rests against the outer circumference of the needle tube, the limiting plate is sleeved on the needle tube. When the needle tube completes puncture, it pushes the shell assembly so that the needle tip enters the shell assembly, and the protrusion also enters the shell assembly. At this time, the sliding assembly loses the resting effect of the needle tube and slides in the preset direction, thereby sealing the perforation of the shell assembly. The limiting plate restricts the protrusion within the shell assembly, thereby shielding the needle tip.

[0011] According to one aspect of the above technical solution, the shell assembly includes a first shell mounted on the needle tube and a second shell movably connected to the first shell. Both sides of the first shell are also provided with clamping blocks for movably connecting to the second shell.

[0012] According to one aspect of the above technical solution, a guide plate for cooperating with the second shell is further provided at one end of the first shell, and the guide plate and the first shell enclose a sliding space for movement of the sliding assembly.

[0013] According to one aspect of the above technical solution, card interfaces for cooperating with the card connection block are provided on both sides of the second shell.

[0014] According to one aspect of the above technical solution, the limiting plate is arranged at one end of the first shell away from the guide plate, and the first shell and the second shell are clamped to align the limiting hole on the limiting plate with the needle tube hole enclosed by the first shell and the second shell.

[0015] According to one aspect of the above technical solution, the diameter of the limiting hole is smaller than the diameter of the protruding portion and larger than the diameter of the needle tube.

[0016] According to one aspect of the above technical solution, the sliding assembly includes a sliding plate and an elastic member sleeved on the sliding plate, one end of the sliding plate rests against the outer periphery of the needle tube, and the two ends of the elastic member respectively rest against the top of the sliding plate and the second shell.

[0017] According to one aspect of the above technical solution, the sliding plate includes a U-shaped plate and a first guide rod provided on the U-shaped plate, and the U-shaped plate slides along the inner wall of the guide plate.

[0018] According to one aspect of the above technical solution, a second guide rod extends from the top of the second shell toward one side of the sliding plate, and both ends of the elastic member are respectively sleeved on the first guide rod and the second guide rod.

[0019] According to one aspect of the above technical solution, one end of the needle tube away from the raised portion is inserted into the needle handle and has an interference fit with the needle handle.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic structural diagram of an anti-needle puncture protection device in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the needle tip shielding state in one embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the explosion structure of the needle-puncture protection device in one embodiment of the present invention.

[0025] Component symbol description in the attached figure:

[0026] The puncture mechanism 100, the needle tube 110, the needle handle 120, the protrusion 130, the protection mechanism 200, the housing assembly 210, the first housing 211, the clamping block 212, the guide plate 213, the second housing 214, the clamping interface 215, the second guide rod 216, the sliding assembly 220, the sliding plate 221, the U-shaped plate 222, the first guide rod 223, the elastic member 224, the limiting plate 230, and the limiting hole 231. DETAILED DESCRIPTION

[0027] To make the objectives, features, and advantages of the present invention more readily apparent, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The accompanying drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered thereon. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," and the like should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. A person of ordinary skill in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0030] See also Figure 1-Figure 3 , which is a schematic structural diagram of an anti-needle puncture protection device provided in an embodiment of the present invention, the anti-needle puncture protection device includes a protection mechanism 200 and a puncture mechanism 100 provided on the protection mechanism 200, wherein:

[0031] To achieve the puncture function, the puncture mechanism 100 includes a needle tube 110 that is inserted into the protective mechanism 200, and a needle handle 120 located on the needle tube 110 away from the needle tip. The needle tube 110 is also provided with a raised portion 130 near the needle tip. The diameter of the internal circular groove of the needle handle 120 is slightly smaller than that of the needle tube 110. When the needle tube 110 is inserted into the needle handle 120, the needle tube 110 and the needle handle 120 are connected as a whole through an interference fit. Special environmentally friendly glue is applied at the connection to enhance the stability of the connection between the needle handle 120 and the needle tube 110.

[0032] To shield the needle tip, a protective mechanism 200 is mounted on the needle tube 110. This mechanism hides the needle tip when the needle tube 110 completes dialysis, preventing it from injuring medical personnel or patients. The protective mechanism 200 includes a housing assembly 210 that is mounted on the needle tube 110, a sliding assembly 220 disposed within the housing assembly 210, and a retaining plate 230. The sliding assembly 220 is movably connected to the housing assembly 210 and abuts against the outer periphery of the needle tube 110. The retaining plate 230 is disposed within the housing assembly 210 at an end away from the sliding assembly 220 and is mounted on the needle tube 110. After the needle tube 110 completes puncture, the housing assembly 210 is pushed, allowing the protrusion 130 to enter the housing assembly 210. The sliding assembly 220 slides and seals the perforation of the housing assembly 210, and the retaining plate 230 confines the protrusion 130 within the housing assembly 210.

[0033] Furthermore, the housing assembly 210 includes a first housing 211 that is sleeved on the needle tube 110, and a second housing 214 that is movably connected to the first housing 211. The first housing 211 is provided with a snap-fit ​​block 212 on both sides for movably connecting to the second housing 214. Correspondingly, the second housing 214 is provided with a snap-fit ​​interface 215 on both sides for use with the snap-fit ​​block 212. When the second housing 214 is snap-fitted to the first housing 211, the snap-fit ​​interface 215 snaps into the snap-fit ​​interface 215 to connect the first housing 211 and the second housing 214. A guide plate 213 that cooperates with the second housing 214 is also provided on the end of the first housing 211 that is close to the end away from the limiting plate 230. The guide plate 213 and the two sides of the first housing 211 enclose a sliding space for movement of the sliding assembly 220.

[0034] Furthermore, when the first shell 211 and the second shell 214 are fastened together, the first shell 211 and the second shell 214 on the side away from the guide plate 213 enclose a hole for the needle tube 110, and the hole for the needle tube 110 is aligned with the limiting hole 231 at the center of the limiting plate 230, so that when the needle tube 110 passes through the limiting hole 231 and the hole for the needle tube 110 in sequence, the needle tube 110 does not tilt. It should be emphasized that the diameter of the limiting hole 231 is smaller than the diameter of the protrusion 130 and larger than the diameter of the needle tube 110, so that when the shell assembly 210 is pushed to move on the needle tube 110, when the needle tip enters the shell assembly 210, the diameter of the protrusion 130 is larger than the diameter of the limiting hole 231, which can prevent the shell assembly 210 from directly sliding off the needle tube 110.

[0035] To achieve needle tip shielding, the sliding assembly 220 includes a sliding plate 221 and an elastic member 224 mounted on the sliding plate 221. One end of the sliding plate 221 rests against the outer circumference of the needle tube 110, while the ends of the elastic member 224 respectively abut against the sliding plate 221 and the top of the second housing 214. The sliding plate 221 includes a U-shaped plate 222 and a first guide rod 223 mounted on the U-shaped plate 222. The U-shaped plate 222 slides along the inner wall of the guide plate 213. A second guide rod 216 extends from the top of the second housing 214 toward the sliding plate 221. The ends of the elastic member 224 respectively mount on the first guide rod 223 and the second guide rod 216.

[0036] When the shell assembly 210 is pushed to move on the needle tube 110, the U-shaped plate 222 rests on the needle tube 110. At this time, the elastic member 224 is sleeved on the first guide rod 223 and the second guide rod 216 and is in a compressed state; when the shell assembly 210 is continued to be pushed to move until the needle tip completely enters the first shell 211 and the second shell 214, the U-shaped plate 222 loses the restoring force of the needle tube 110, and the elastic member 224 opens the U-shaped plate 222 due to the restoring force, so as to drive the U-shaped plate 222 to move toward the first shell 211, thereby blocking the perforation and shielding the needle tip.

[0037] In summary, the utility model proposes an anti-needle puncture protection device, which is sleeved on the needle tube by using a shell assembly. When dialysis is completed, the shell assembly is moved to allow the needle tip to enter the shell assembly, and the sliding assembly is separated from the needle tube, and then moves in a preset direction and seals the perforation of the shell assembly. At the same time, due to the clamping effect of the protrusion and the limiting plate, the shell assembly is prevented from being separated from the needle tube, which plays a role in shielding the needle tip and achieves the purpose of protecting medical staff and patients. Specifically, the anti-needle puncture protection device includes a protection mechanism and a puncture mechanism inserted in the protection mechanism. The puncture mechanism includes a needle tube inserted in the protection mechanism, and a needle handle provided on the needle tube away from the needle tip, and a protrusion is provided on the needle tube near the needle tip; the protection mechanism includes a shell assembly sleeved on the needle tube, a sliding assembly and a limiting plate provided in the shell assembly. Since the sliding assembly rests against the outer circumference of the needle tube, the limiting plate is sleeved on the needle tube. When the needle tube completes puncture, it pushes the shell assembly so that the needle tip enters the shell assembly, and the protrusion also enters the shell assembly. At this time, the sliding assembly loses the resting effect of the needle tube and slides in the preset direction, thereby sealing the perforation of the shell assembly. The limiting plate restricts the protrusion within the shell assembly, thereby shielding the needle tip.

[0038] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A needle puncture protection device, characterized in that: The anti-needle puncture protection device includes a protection mechanism and a puncture mechanism provided on the protection mechanism; The puncture mechanism comprises a needle tube inserted into the protective mechanism and a needle handle arranged on the needle tube away from the needle tip, wherein the needle tube is provided with a raised portion near the needle tip; The protection mechanism includes a housing assembly sleeved on the needle tube, a sliding assembly and a limiting piece arranged in the housing assembly; In which, the sliding component rests against the outer periphery of the needle tube, and the limiting plate is sleeved on the needle tube. When the needle tube completes puncture, it pushes the shell component to allow the protrusion to enter the shell component. The sliding component slides and seals the perforation of the shell component, and the protrusion is limited to the shell component by the limiting plate.

2. The needle stick protection device according to claim 1, characterized in that: The housing assembly includes a first housing sleeved on the needle tube and a second housing movably connected to the first housing. Both sides of the first housing are further provided with clamping blocks for movably connecting to the second housing.

3. The needle stick protection device according to claim 2, characterized in that: One end of the first shell is further provided with a guide plate for use with the second shell, and the guide plate and the first shell enclose a sliding space for movement of the sliding assembly.

4. The needle stick protection device according to claim 3, characterized in that: Card interfaces for use with the card connection blocks are provided on both sides of the second shell.

5. The needle stick protection device according to claim 1, characterized in that: The limiting piece is arranged at one end of the first shell away from the guide plate, and the first shell and the second shell are clamped to align the limiting hole on the limiting piece with the needle tube hole enclosed by the first shell and the second shell.

6. The needle stick protection device according to claim 5, characterized in that: The diameter of the limiting hole is smaller than the diameter of the protruding portion and larger than the diameter of the needle tube.

7. The needle stick protection device according to claim 1, characterized in that: The sliding assembly includes a sliding plate and an elastic member sleeved on the sliding plate. One end of the sliding plate abuts against the outer periphery of the needle tube, and both ends of the elastic member abut against the top of the sliding plate and the second shell respectively.

8. The needle stick protection device according to claim 7, characterized in that: The sliding plate includes a U-shaped plate and a first guide rod arranged on the U-shaped plate, and the U-shaped plate slides along the inner wall of the guide plate.

9. The needle stick protection device according to claim 8, characterized in that: A second guide rod extends from the top of the second shell toward one side of the sliding plate, and two ends of the elastic member are respectively sleeved on the first guide rod and the second guide rod.

10. The needle stick protection device according to claim 1, characterized in that: One end of the needle tube away from the raised portion is inserted into the needle handle and has an interference fit with the needle handle.

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