A protective device for intravenous syringes

Abstract

This invention provides a protective device for intravenous syringes, including a shielding cylinder, a connecting mechanism, two shielding components, and a locking mechanism. The shielding cylinder is slidably sleeved on the outside of the empty syringe barrel. The connecting mechanism can fix the shielding cylinder to the empty syringe barrel. Both shielding components are rotatably connected to the ends of the shielding cylinder, and when they are in contact with each other, a hemispherical space is formed on their inner sides. The locking mechanism can drive the two shielding components to rotate and fit together. The hemispherical space can cover the syringe needle. This invention, through the locking mechanism, rotates and fits the two shielding components together, forming a hemispherical space on the inner sides of the two shielding components to cover the syringe needle. Particles of chemotherapy drugs escaping into the air are isolated in the hemispherical space, which can reduce the contact between chemotherapy drugs and medical personnel, thereby reducing the harm to medical personnel.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and specifically to a protective device for an intravenous syringe. Background Technology

[0002] Chemotherapy, short for chemical drug therapy, aims to kill cancer cells to achieve therapeutic goals. Chemotherapy drugs are highly toxic; exposure to chemotherapy solutions can produce invisible chemical particles that enter the body through the skin and mucous membranes. Occupational exposure to chemotherapy drugs can cause nursing staff to experience decreased white blood cell counts, hair loss, menstrual irregularities, susceptibility to colds, fatigue, drowsiness, and discomfort in the eyes or mucous membranes. Therefore, strict protective measures are required throughout the entire process, from drug preparation to infusion into the patient's body.

[0003] In existing technologies, chemotherapy drugs can be prepared robotically, and there are various methods of drug infusion, depending on the duration of chemotherapy. Patients requiring long-term chemotherapy can use port-a-catheter or central venous catheter placement; while short-term chemotherapy, due to the small dosage, usually uses ordinary intravenous injection. Intravenous injection requires a syringe to pierce the drug bag to retrieve the drug, and then the chemotherapy solution is manually injected into the patient. During this process, the syringe needle carrying the chemical solution is exposed to the air for a period of time, increasing the risk of harm. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a protective device for intravenous syringes, which can solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] This invention provides a protective device for intravenous syringes, comprising: The shielding sleeve is slidably fitted outside the empty syringe barrel; A connecting mechanism can fix the shielding cylinder to the empty syringe barrel; Two shielding components are provided, both rotatably connected to the end of the shielding cylinder, and when they are fitted together, a hemispherical space can be formed on their inner sides; and The locking mechanism can drive the two blocking members to rotate and fit together.

[0006] The hemispherical space can cover the syringe needle.

[0007] Preferably, the shielding cylinder includes a coaxial inner cylinder and an outer cylinder, the inner cylinder can be sleeved on the empty syringe barrel, the ends of the inner cylinder and the outer cylinder are connected, and the shielding member is rotatably connected to the end of the outer cylinder; The locking mechanism includes: The mounting sleeve is slidably fitted onto the inner cylinder and located inside the outer cylinder; and A locking cylinder is sleeved on the outer cylinder, with its inner wall fitting with the outer wall of the outer cylinder. The locking cylinder can slide along the outer cylinder to drive the two blocking parts to rotate and fit together, and the connecting mechanism can fix the mounting cylinder on the empty syringe barrel.

[0008] Preferably, the locking cylinder has a first locking notch extending axially at the two blocking members, and the outer cylinder has a second locking notch extending axially at the first locking notch. The locking mechanism also includes: Two symmetrically arranged first locking rods are rotatably connected at one end to the inner walls of the two sides of the first locking notch on the same side. Two symmetrically arranged second locking rods, one end of which is rotatably connected to the end of the first locking rod on the same side away from the first locking notch, and the other end of which is rotatably connected to the blocking member; Two symmetrically arranged arc-shaped inner rods, one end of which is connected to the first locking rod; Two symmetrically arranged arc-shaped outer tubes, one end of which is connected to the second locking rod, and the other end which is slidably sleeved on the arc-shaped inner rod; and Two locking springs are sleeved on the arc-shaped inner rod and the arc-shaped outer tube on the same side, and their two ends are respectively connected to the first locking rod and the second locking rod.

[0009] Preferably, a rubber strip is connected to the inner side of the first locking rod, and the rubber strip can pass through the second locking notch and abut against the mounting cylinder.

[0010] Preferably, the connecting mechanism includes: A connecting sleeve, which can be fitted onto the empty syringe barrel; and The transition cylinder has one end coaxially connected to the connecting cylinder and can be sleeved on the empty syringe barrel, while the outer wall of the other end is threadedly connected to the inner wall of the mounting cylinder. The other end of the transition cylinder has a plurality of axially extending mounting notches, and a rubber block is connected in the mounting notch. The end of the rubber block near the mounting cylinder is lower than the other end, and the end of the rubber block can be inserted into the mounting cylinder.

[0011] Preferably, each of the two shielding members has a protrusion on the inner wall of the end where they fit together, and a sponge with a matching shape can be placed inside the two shielding members, and the protrusion can limit the position of the sponge.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the two shielding parts are rotated and fitted together by a locking mechanism. The inner sides of the two shielding parts form a hemispherical space that covers the syringe needle. The particles of chemotherapy drug solution that are released into the air are isolated in the hemispherical space, which can reduce the contact between chemotherapy drug solution and medical staff, thereby reducing the harm to medical staff. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is a perspective view of a protective device for an intravenous syringe according to an embodiment of the present invention; Figure 2 for Figure 1 Another 3D image; Figure 3 for Figure 1 Internal diagram (without syringe needle); Figure 4 for Figure 1 A 3D view of point A; Figure 5 for Figure 1 3D view of point B; Figure 6 for Figure 1 A 3D view at point C.

[0015] Figure label: 10. Shielding cylinder; 11. Inner cylinder; 12. Outer cylinder; 121. Second locking notch; 20. Empty syringe barrel; 21. Syringe needle; 30. Connecting mechanism; 31. Connecting cylinder; 32. Transition cylinder; 321. Mounting notch; 33. Rubber block; 40. Obstruction; 41. Hemispherical space; 42. Protrusion; 50. Locking mechanism; 51. Mounting cylinder; 52. Locking cylinder; 521. First locking notch; 53. First locking rod; 54. Second locking rod; 55. Arc-shaped inner rod; 56. Arc-shaped outer tube; 57. Locking spring; 58. Rubber strip. Detailed Implementation

[0016] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0017] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] See Figures 1 to 6 This embodiment provides a protective device for intravenous syringes, including a shielding cylinder 10, a connecting mechanism 30, two shielding components 40, and a locking mechanism 50.

[0023] The shielding sleeve 10 is slidably fitted onto the syringe barrel 20. The connecting mechanism 30 can fix the shielding sleeve 10 onto the syringe barrel 20. Both shielding members 40 are rotatably connected to the ends of the shielding sleeve 10, and when they are in contact with each other, a hemispherical space 41 is formed on their inner sides. The locking mechanism 50 can drive the two shielding members 40 to rotate and fit together. The hemispherical space 41 can cover the syringe needle 21.

[0024] In this embodiment, the shielding sleeve 10 is fitted over the empty syringe barrel 20 to be used. After the syringe is dispensed from the medicine bag, the syringe needle 21 is exposed to the air, and some small particles of the chemotherapy drug escape into the air. At this time, the shielding sleeve is pushed so that the shielding member 40 is positioned at the syringe needle 21. Then, the locking mechanism 50 rotates the two shielding members 40 together, forming a hemispherical space 41 that covers the syringe needle 21. The particles of chemotherapy drug that have escaped into the air are isolated in the hemispherical space 41, reducing contact between the chemotherapy drug and medical personnel, thereby reducing the risk of injury to medical personnel. In addition, the shielding sleeve 10 and the two shielding members 40 work together to form a closed-end cylindrical shape, thus the shielding sleeve 10 also has a certain isolation function, isolating the particles of chemotherapy drug that have escaped into the air within it. The shielding member 40 also prevents medical personnel from being pricked. During operation, simply pushing the shielding cylinder 10 and using the locking mechanism 50 can move the medical staff away from the syringe needle 21, increasing the distance between the medical staff and the syringe needle 21, thereby reducing the chance of injury to the medical staff.

[0025] In one embodiment, the shielding cylinder 10 includes a coaxial inner cylinder 11 and an outer cylinder 12. The inner cylinder 11 can be sleeved on the syringe empty cylinder 20. The ends of the inner cylinder 11 and the outer cylinder 12 are connected, and the shielding member 40 is rotatably connected to the end of the outer cylinder 12.

[0026] The locking mechanism 50 includes a mounting cylinder 51 and a locking cylinder 52.

[0027] The mounting cylinder 51 is slidably sleeved on the inner cylinder 11 and located inside the outer cylinder 12. Specifically, a groove is formed on the inner wall of the mounting cylinder 51, and a sliding strip is provided on the outer wall of the inner cylinder 11 corresponding to the groove. The sliding strip slides in cooperation with the corresponding groove. The locking cylinder 52 is sleeved on the outer cylinder 12, and the inner wall of the locking cylinder 52 is in clearance fit with the outer wall of the outer cylinder 12. The sliding of the locking cylinder 52 along the outer cylinder 12 can drive the two blocking members 40 to rotate and fit together. The connecting mechanism 30 can fix the mounting cylinder 51 to the syringe empty cylinder 20.

[0028] In this embodiment, the inner cylinder 11 is fitted onto the syringe empty cylinder 20, and the mounting cylinder 51 is also fitted onto the outer side of the inner cylinder 11. The mounting cylinder 51 is fixed onto the syringe empty cylinder 20 by the connecting mechanism 30. Then, the locking cylinder 52 is pushed so that the two blocking parts 40 rotate and fit together to form a hemispherical space 41 that covers the syringe needle 21.

[0029] In one embodiment, the locking cylinder 52 has a first locking notch 521 extending along its axial direction at the two blocking members 40, and the outer cylinder 12 has a second locking notch 121 extending along its axial direction at the first locking notch 521.

[0030] The locking mechanism 50 also includes two symmetrically arranged first locking rods 53, two symmetrically arranged second locking rods 54, two symmetrically arranged arc-shaped inner rods 55, two symmetrically arranged arc-shaped outer tubes 56, and two locking springs 57.

[0031] Two symmetrically arranged first locking rods 53 are rotatably connected at one end to the inner walls of the two sides of the first locking notch 521 on the same side.

[0032] Two symmetrically arranged second locking rods 54 are rotatably connected at one end to the end of the first locking rod 53 on the same side away from the first locking notch 521, and at the other end to the blocking member 40. Two symmetrically arranged arc-shaped inner rods 55 are connected at one end to the first locking rod 53. Two symmetrically arranged arc-shaped outer tubes 56 are connected at one end to the second locking rods 54, and at the other end are slidably sleeved on the arc-shaped inner rods 55. Two locking springs 57 are sleeved on the arc-shaped inner rods 55 and the arc-shaped outer tubes 56 on the same side, and at both ends are connected to the first locking rod 53 and the second locking rod 54, respectively. Specifically, the first locking rod 53 and the second locking rod 54 can be simultaneously located within the second locking notch 121, at which time the first locking rod 53 and the second locking rod 54 are in a straight line, and the locking springs 57 are in a slightly stretched state.

[0033] In this embodiment, before the inner cylinder 11 is fitted onto the syringe barrel 20, the first locking rod 53 and the second locking rod 54 are aligned under the tension of the locking spring 57. At this time, the two blocking members 40 are in contact with each other, and the entire inner cylinder 11 and the blocking members 40 form a closed space at one end. In use, the syringe is inserted into the inner cylinder 11, and the first locking rod 53 and the second locking rod 54 are pulled to make them form an angle. At this time, the locking spring 57 is stretched, and at the same time, the blocking members 40 and the locking cylinder 52 move closer to each other. The syringe needle 21 can pass through the gap between the two blocking members 40. After the needle passes through the two blocking members 40, the locking spring 57 can be released, and the two blocking members 40 abut against the syringe needle 21 under the action of the locking spring 57. At this time, the syringe needle 21 can move freely back and forth between the two blocking members 40, and can take medicine from the medicine bag or inject it. When it is necessary to isolate the syringe needle 21, pull the first locking lever 53 and the second locking lever 54 to move them toward the needle. Once the shielding member 40 covers the syringe needle 21, release the first locking lever 53 and the second locking lever 54. Under the action of the locking spring 57, the two shielding members 40 will wrap and isolate the syringe needle 21.

[0034] In one embodiment, a rubber strip 58 is connected to the inner side of the first locking rod 53, and the rubber strip 58 can pass through the second locking notch 121 and abut against the mounting cylinder 51.

[0035] In this embodiment, when the first locking rod 53 and the second locking rod 54 are aligned, the rubber strip 58 abuts against the outer wall of the mounting cylinder 51. Under the action of the locking spring 57, the rubber strip 58 is tightly fitted to the outer wall of the mounting cylinder 51, preventing the first locking rod 53 and the second locking rod 54 from sliding along the axis of the mounting cylinder 51. This fixes the locking cylinder 52 and the shielding member 40 in place, while also ensuring that the shielding member 40 does not move after enclosing the syringe needle 21, and that the needle does not contact the inner wall of the shielding member 40, thus preventing excessive chemotherapy solution from remaining on the inner wall of the shielding member 40. The entire device can be cleaned and reused subsequently.

[0036] In one embodiment, the connecting mechanism 30 includes a connecting cylinder 31 and a transition cylinder 32.

[0037] The connecting cylinder 31 can be sleeved on the syringe empty cylinder 20. One end of the transition cylinder 32 is coaxially connected to the connecting cylinder 31 and can be sleeved on the syringe empty cylinder 20, while the outer wall of the other end is threadedly connected to the inner wall of the mounting cylinder 51.

[0038] The other end of the transition cylinder 32 is provided with a plurality of axially extending mounting notches 321. A rubber block 33 is connected in the mounting notch 321. The end of the rubber block 33 near the mounting cylinder 51 is lower than the other end. The end of the rubber block 33 can be inserted into the mounting cylinder 51.

[0039] In this embodiment, during installation, the empty syringe barrel passes through the connecting barrel 31, the transition barrel 32, and the mounting barrel 51. The mounting barrel 51 rotates on the transition barrel 32, thereby approaching the connecting barrel 31. During the rotation of the mounting barrel 51, its inner wall presses against the rubber block 33. After being pressed against, the rubber block 33 abuts against the outer wall of the inner syringe empty barrel 20, thereby fixing the mounting barrel 51, the transition barrel 32, and the connecting barrel 31 onto the syringe empty barrel 20.

[0040] In one embodiment, each of the inner walls of the two shielding members 40 that are attached to each other has a protrusion 42. A sponge of a matching shape can be placed inside the two shielding members 40, and the protrusion 42 can limit the position of the sponge. The sponges placed inside the two shielding members 40 can be joined together, and double-sided tape is adhered to the joint surfaces of the two sponges. After the injection is completed, the two shielding members 40 are joined together, and the two sponges are also joined together, thus clamping the syringe needle 21 in the middle. The residual chemotherapy solution on the syringe needle 21 can be absorbed by the sponge. Such syringes require special handling afterward and need to be removed from this device, while the sponge remains on the syringe needle 21, which can avoid harm to medical staff and subsequent treatment personnel. The protrusion 42 only has a slight limiting effect on the sponge. When the two sponges are glued together, the needle is wrapped in the middle. When the two shielding members open, the shielding members and sponges naturally separate.

[0041] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A protective device for an intravenous syringe, characterized in that, include: The shielding tube (10) is slidably sleeved outside the syringe empty tube (20); The connecting mechanism (30) can fix the shielding cylinder (10) to the syringe empty cylinder (20); Two shielding members (40) are provided, each rotatably connected to the end of the shielding cylinder (10), and when they are fitted together, a hemispherical space (41) can be formed on their inner sides; and The locking mechanism (50) can drive the two blocking members (40) to rotate and fit together; The hemispherical space (41) can cover the syringe needle (21); The shielding cylinder (10) includes a coaxial inner cylinder (11) and an outer cylinder (12). The inner cylinder (11) can be sleeved on the syringe empty cylinder (20). The ends of the inner cylinder (11) and the outer cylinder (12) are connected. The shielding member (40) is rotatably connected to the end of the outer cylinder (12). The locking mechanism (50) includes: The mounting sleeve (51) is slidably sleeved on the inner cylinder (11) and located inside the outer cylinder (12); and A locking cylinder (52) is sleeved on the outer cylinder (12), with its inner wall fitting with the outer wall of the outer cylinder (12) with a clearance fit. The locking cylinder (52) slides along the outer cylinder (12) to drive the two blocking parts (40) to rotate and fit together. The connecting mechanism (30) can fix the mounting cylinder (51) on the syringe empty cylinder (20). The connecting mechanism (30) includes: Connecting sleeve (31) can be fitted onto syringe barrel (20); and The transition tube (32) is coaxially connected to the connecting tube (31) at one end and can be sleeved on the syringe empty tube (20). The outer wall of the other end is threadedly connected to the inner wall of the mounting tube (51). The other end of the transition cylinder (32) is provided with a plurality of axially extending mounting notches (321), and a rubber block (33) is connected in the mounting notch (321). The end of the rubber block (33) near the mounting cylinder (51) is lower than the other end, and the end of the rubber block (33) can be inserted into the mounting cylinder (51).

2. The intravenous syringe protective device as described in claim 1, characterized in that, The locking cylinder (52) has a first locking notch (521) along its axial direction at the two blocking members (40), and the outer cylinder (12) has a second locking notch (121) extending along its axial direction at the first locking notch (521). The locking mechanism (50) further includes: Two symmetrically arranged first locking rods (53) are rotatably connected at one end to the inner walls of the two sides of the first locking notch (521) on the same side. Two symmetrically arranged second locking rods (54) are rotatably connected at one end to the end of the first locking rod (53) on the same side away from the first locking notch (521), and at the other end to the blocking member (40). Two symmetrically arranged arc-shaped inner rods (55) are connected at one end to the first locking rod (53); Two symmetrically arranged arc-shaped outer tubes (56), one end of which is connected to the second locking rod (54), and the other end is slidably sleeved on the arc-shaped inner rod (55); and Two locking springs (57) are sleeved on the arc-shaped inner rod (55) and the arc-shaped outer tube (56) on the same side, and their two ends are respectively connected to the first locking rod (53) and the second locking rod (54).

3. The intravenous syringe protective device as described in claim 2, characterized in that, A rubber strip (58) is connected to the inner side of the first locking rod (53). The rubber strip (58) can pass through the second locking notch (121) and abut against the mounting cylinder (51).

4. A protective device for an intravenous syringe as described in claim 3, characterized in that, The inner walls of the two shielding members (40) that are in contact with each other are provided with protrusions (42), and sponges that fit the shape can be placed inside the two shielding members (40), and the protrusions (42) can limit the position of the sponge.

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