Anti-needlestick non-damaging needle

Abstract

The present invention discloses an anti-needle puncture non-destructive needle, comprising an upper cover, a gripping shell and a base; an injection channel is arranged on the upper cover, the injection channel comprises a liquid inlet and a liquid outlet, the liquid outlet is connected with the needle tube inlet, and the needle tube outlet passes through the gripping shell and the base; a shield is arranged in the hollow part of the gripping shell, an opening is arranged on one side of the shield and its bottom end is placed on the base; a movable body is placed in the shield; in the first state: the shield is retracted, the upper cover, the gripping shell and the base are snapped together, the outlet end of the needle tube passes through the movable body and the base, and the movable body is stuck in the opening; in the second state: the shield is stretched open, the gripping shell is separated from the base, the needle tube is separated from the movable body, the needle tube and the movable body are both located in the shield, and the movable body will block the needle tube. The beneficial effects of the present invention are mainly reflected in: after the infusion is completed, the residual blood on the needle tube is isolated from the outside by the shield; the movable body will block the needle tube to prevent the needle tube from stabbing medical staff and patients.

Description

Technical Field

[0001] The present invention relates to the technical field of medical articles, and in particular to an anti-needle puncture non-damage needle. Background Art

[0002] The non-destructive needle is generally used in medical infusion and is used in conjunction with the infusion port base. The liquid medicine is injected into the patient's body through the non-destructive needle and the infusion port to treat the patient's disease. The non-destructive needle set for intravenous infusion port disclosed in Chinese patent CN201820513387.4 describes the structure of the non-destructive needle in detail. However, problems were also found. First, due to the tight texture of the silicone puncture diaphragm at the top of the infusion port base, after the patient's infusion is finished, the nurse uses the left hand to fix the infusion port base, and the right hand often needs to use a lot of force to withdraw the non-destructive needle. At the moment when the non-destructive needle is pulled out, the right hand often rebounds unconsciously due to inertia, which can easily cause the nurse to press the base finger or the patient's skin at the puncture site. And after the non-destructive needle is pulled out, the recovery of the non-destructive needle is another problem. Our "non-destructive needle" not only hurts our nursing staff, but also hurts our patients. Once infected by various pathogens, it will cause a heavy psychological blow to medical staff and patients, and cause economic losses. Secondly, after the non-destructive needle is pulled out, the residual blood inside and outside the needle tube will overflow, and if it drips onto medical staff or ordinary people, it will contaminate them.

[0003] Therefore, there is an urgent need for a non-damaging needle that can prevent needle sticks to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an anti-needlestick non-damage needle.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A needle-stick-proof and non-destructive needle comprises an upper cover, a hollow truncated cone-shaped holding shell and a base; the upper cover is provided with a liquid injection channel, the liquid injection channel comprises a liquid inlet and a liquid outlet, the liquid outlet is communicated with the inlet of a needle tube, and the outlet of the needle tube passes through the holding shell and the base; a retractable shield is provided in the hollow part of the holding shell, and an opening is provided on one side of the shield; the bottom end of the shield is placed on the base; a movable body is placed in the shield, and a channel passes through the movable body; the needle-stick-proof and non-destructive needle has two states, in the first state: the shield is retracted, the upper cover, the holding shell and the base are snap-connected, the outlet end of the needle tube passes through the movable body and the base, and the movable body is stuck in the opening; in the second state: the shield is stretched open, the holding shell is separated from the base, the needle tube is detached from the movable body, the needle tube and the movable body are both located in the shield, and the movable body will block the needle tube.

[0007] Preferably, in the second state, the shield includes, from top to bottom, a first-level shield, a second-level shield, a third-level shield and a fourth-level shield, and their heights are not higher than the height of the holding shell; the first-level shield is clamped with the holding shell through the external protrusion.

[0008] Preferably, the first-level shield, the second-level shield, the third-level shield and the fourth-level shield in the shield are all provided with external protrusions at the top and internal protrusions at the bottom, and the external protrusions of the lower shield are snap-fitted with the internal protrusions of the upper shield.

[0009] Preferably, the outer wall of the fourth-level shield is fixedly disposed in the base, the opening is disposed on the fourth-level shield and the height of the opening is smaller than the diameter of the movable body.

[0010] Preferably, a spring sheet is fixed to the top of the fourth-level shield, and in the first state, the spring sheet can exert a force on the movable body; and a through hole for the needle tube to pass through is correspondingly arranged on the two end faces of the spring sheet.

[0011] Preferably, the diameter of the movable body is smaller than the diameter of the fourth-stage shield; and the channel is eccentrically arranged on the movable body.

[0012] Preferably, the base is composed of a pedestal and a circular tube, which are concentrically fixedly connected.

[0013] Preferably, the base is provided with a buckle for use with the holding shell.

[0014] Preferably, a convex guide block is provided inside the circular tube, and the large circumferential surface of the guide block is fixed to the inner wall of the base; the fourth-level shield is fixed between the small circumferential surface of the guide block and the base.

[0015] Preferably, the guide block is provided with a through hole for the needle tube to pass through.

[0016] The beneficial effects of the present invention are mainly reflected in:

[0017] 1. After the patient's infusion is finished, the needle can be pulled out by holding the shell, and the movable body under the needle will block the needle, making it impossible for the needle to pass through the movable body and the base, thereby preventing the needle from stabbing medical staff and patients;

[0018] 2. The shield of the present invention adopts a retractable structure, which does not occupy space when in use. After use, it can ensure that the blood does not come into contact with medical staff, achieving a good isolation effect;

[0019] 3. The present invention adopts a snap-on design, whereby if a part of the parts is damaged, the part can be removed and replaced with a new part without having to replace the entire assembly;

[0020] 4. In the present invention, a spring sheet is arranged on the movable body. When the gripping shell is pulled out, the spring sheet will exert a force on the movable body below it, so as to pull the movable body out of the opening to block the needle tube;

[0021] 5. The channel on the movable body in the present invention is eccentrically arranged on the movable body to ensure that the needle tube cannot pass through the movable body after the movable body falls onto the shield. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0023] Figure 1 : A three-dimensional diagram of the first state of the acupuncture-proof non-damaging needle of the present invention;

[0024] Figure 2 : An exploded view of the first state of the anti-acupuncture non-damage needle of the present invention;

[0025] Figure 3 : A cross-sectional view of the second state of the needle-proof non-damaging needle of the present invention;

[0026] Figure 4 : A three-dimensional view of the holding shell of the needle-proof non-damaging needle of the present invention;

[0027] Figure 5 : A cross-sectional view of the needle-proof non-damaging needle of the present invention;

[0028] Figure 6 : Figure 5 Enlarged view of part A. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0030] Without limiting the present invention, any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all included in the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] 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 by specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] like Figures 1 to 3 As shown, the needle-proof non-damaging needle comprises an upper cover 1, a hollow truncated cone-shaped holding shell 2 and a base 3. The upper cover 1 and the base 3 are fixed with buckles that cooperate with the slots provided on the holding shell 2. Figure 3 As shown in the figure, the base 3 is provided with a silicone ring 5 which is in close contact with the base 3. The structure of the grip shell 2 is as follows: Figure 4 As shown, it has an ergonomic grip position.

[0035] like Figure 5 As shown, the upper cover 1 is provided with a liquid injection channel 11, and the liquid injection channel 11 includes a liquid inlet 111 and a liquid outlet 112. The liquid outlet 112 is connected to the inlet of a needle tube 102, and the diameter of the liquid outlet 112 is equivalent to the diameter of the needle tube 102. The outlet end of the needle tube 102 passes through the grip shell 2 and the base 3. The structure of the needle tube 102 belongs to the prior art and is not the focus of the present invention, so it will not be described here. Its specific structure is as follows: Figure 2 Shown.

[0036] like Figure 6As shown, the hollow part of the grip shell 2 is provided with a retractable shield 21, which can be made of plastic or metal. The bottom end of the shield 21 is placed on the base 3; an opening 210 is provided on one side of the shield 21; a movable body 4 is placed in the shield 21, and the movable body 4 can be made of metal or plastic. Its shape is not limited. In the present invention, a sphere is used as an example. A channel 40 runs through the movable body 4. The height of the opening 210 is smaller than the diameter of the movable body 4 to ensure that the movable body 4 does not fall out of the opening 210.

[0037] The needle-stick-proof and non-damaging needle of the present invention has two states:

[0038] like Figure 1 In the first state shown: the shield 21 is retracted, the upper cover 1, the holding shell 2 and the base 3 are snap-fitted, the outlet end of the needle tube 102 passes through the channel 40 in sequence through the movable body 4, the base 3 and the silicone ring 5, and at this time the movable body 4 is snapped into the opening 210.

[0039] like Figure 2 In the second state shown, the shield 21 is stretched open, the grip housing 2 is separated from the base 3, the needle tube 102 is separated from the movable body 4, and the needle tube 102 and the movable body 4 are both located in the shield 21, and the movable body 4 will block the needle tube 102. In this state, the residual blood on the needle tube 102 can be isolated from the outside by the shield 21; the movable body 4 located below the needle tube 102 will block the needle tube, so that the needle tube cannot pass through the movable body and the base, which can prevent the needle tube from stabbing medical staff and patients.

[0040] In the second state, the shield 21 includes, from top to bottom, a first-stage shield 211, a second-stage shield 212, a third-stage shield 213, and a fourth-stage shield 214, all of which are not higher than the height of the grip shell 2, that is, when in the first state, all shields are in the hollow part of the grip shell 2. The first-stage shield 211 is engaged with the grip shell 2 via an outer protrusion 2101 disposed at the top of the shield 21.

[0041] The top of the primary shield 211, the secondary shield 212, the tertiary shield 213 and the quaternary shield 214 are all provided with the outer protrusion 2101, and the bottom is provided with the inner protrusion 2102. The outer protrusion 2101 of the lower shield is engaged with the inner protrusion 2102 of the upper shield. In addition, grooves of corresponding sizes can be provided on adjacent shields, and floating beads can be placed in the grooves. In the first state, the floating beads will be retracted into the grooves, and in the second state, the floating beads will protrude to fix the adjacent shields, such as the structure of a retractable umbrella rod.

[0042] like Figure 3 , Figure 6 As shown, the opening 210 is provided on the four-stage shield 214, the movable body 4 is located in the four-stage shield 214, and the diameter of the movable body 4 is smaller than the diameter of the four-stage shield 214, that is, the movable body 4 can move in the four-stage shield 214. To ensure that the needle tube 102 cannot pass through the movable body 4 when the needle is in the second state, the channel 40 is eccentrically provided on the movable body 4, that is, when the movable body 4 falls from the opening 210, the channel 40 and the needle tube 102 are not on the same axis.

[0043] A spring piece 2141 is fixed to the top of the fourth-stage shield 214. In the first state, the spring piece 2141 can exert a force on the movable body 4. When the grip shell is pulled out, the spring piece 2141 will exert a force on the movable body 4 below it, and pull the movable body 4 out of the opening 210 to block the needle tube. A through hole 21410 for the needle tube 102 to pass through is correspondingly provided on the two end surfaces of the spring piece 2141.

[0044] like Figure 2 , Figure 6 As shown, the base 3 is composed of a base 31 and a circular tube 32, which are concentrically fixed, and the diameter of the base 31 is larger than the diameter of the circular tube 32. The base 31 can also be made into other shapes, and is described as a circular structure here. The base 31 is provided with a buckle 311 used in conjunction with the grip shell 2, and the distance between the buckles 311 is larger than the diameter of the hollow part on the grip shell 4. The outer wall of the fourth-level shield 214 is fixedly arranged on the inner wall of the circular tube 32.

[0045] like Figure 6 As shown, a convex guide block 321 is provided inside the circular tube 32. The guide block 321 is made of sponge or other elastic material to ensure that the movable body and the guide block will not be damaged after the movable body 4 falls. The large circumference of the guide block 321 is fixed to the inner wall of the circular tube 32; the small circumference of the guide block 321 is fixed to the inner wall of the fourth-level shield 214. It can be fixed by gluing or other methods. A through hole 3210 for the needle tube 102 to pass through is provided on the guide block 321.

[0046] The working process of the present invention is briefly described below:

[0047] In the first state (when in use), the upper cover 1, the holding shell 2 and the base 3 are snap-connected. At this time, the outlet end of the needle tube 102 passes through the movable body 4, the base 3 and the silicone ring 5 in sequence through the channel 40. At this time, the protective cover 21 is sequentially mounted on the hollow part of the holding shell 2, the movable body 4 is stuck in the opening 210, and the spring 2141 is compressed.

[0048] In the second state (after use), the medical staff can pull out the needle tube 102 by holding the housing, and the shield 21 is unfolded in sequence; the housing 2 is separated from the base 3; the needle tube 102 is separated from the movable body 4, and the movable body 4 will fall from the opening 210 under the action of gravity; at the same time, the spring piece 2141 set on the movable body 4 is opened to prevent the movable body 4 from being stuck in the opening again. At this time, the needle tube 102 and the movable body 4 are both located in the shield 21, and the movable body 4 will block the needle tube 102.

[0049] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0050] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-needlestick non-damaging needle, comprising an upper cover (1), a hollow truncated cone-shaped holding shell (2) and a base (3); the upper cover (1) is provided with an injection channel (11), the injection channel comprises a liquid inlet (111) and a liquid outlet (112), the liquid outlet (112) is communicated with the inlet of a needle tube (102), and the outlet of the needle tube (102) passes through the holding shell (2) and the base (3); the characteristics are: A retractable shield (21) is provided in the hollow portion of the grip shell (2), and an opening (210) is provided on one side of the shield (21); the bottom end of the shield (21) is placed on the base (3); a movable body (4) is placed in the shield (21), and the movable body (4) is a sphere, and a channel (40) passes through the movable body (4); the channel (40) is eccentrically arranged on the movable body (4); the needle-stick-proof non-damaging needle has two states, in the first state: the shield (21) is retracted, and the upper cover (1) and The holding shell (2) is snap-connected with the base (3), and the outlet end of the needle tube (102) passes through the movable body (4) and the base (3), and the movable body (4) is now snapped into the opening (210); in the second state: the shield (21) is stretched open, the holding shell (2) is separated from the base (3), the needle tube (102) is separated from the movable body (4), and the needle tube (102) and the movable body (4) are both located in the shield (21), and the movable body (4) will block the needle tube (102); In the second state, the protective cover (21) comprises, from top to bottom, a sleeved primary protective cover (211), a secondary protective cover (212), a tertiary protective cover (213) and a quaternary protective cover (214), the heights of which are not higher than the height of the grip shell (2); the primary protective cover (211) is snap-fitted to the grip shell (2) via an external protrusion (2101); The first-level shield (211), the second-level shield (212), the third-level shield (213) and the fourth-level shield (214) in the shield (21) are all provided with external protrusions (2101) at their top ends and internal protrusions (2102) at their bottom ends, and the external protrusions (2101) of the lower shield are snap-fitted with the internal protrusions (2102) of the upper shield; The outer wall of the fourth-stage shield (214) is fixedly disposed in the base (3); the opening (210) is disposed on the fourth-stage shield (214); and the height of the opening (210) is smaller than the diameter of the movable body (4); A spring sheet (2141) is fixed to the top of the fourth-stage shield (214), and in a first state, the spring sheet (2141) can exert a force on the movable body (4); two end surfaces of the spring sheet (2141) are correspondingly provided with a through hole (21410) for the needle tube (102) to pass through; The diameter of the movable body (4) is smaller than the diameter of the fourth-stage shield (214).

2. The acupuncture-proof and non-damaging needle according to claim 1, characterized in that: The base (3) is composed of a pedestal (31) and a circular tube (32), which are concentrically fixedly connected.

3. The acupuncture-proof and non-damaging needle according to claim 2, characterized in that: The base (31) is provided with a buckle (311) for use in conjunction with the holding shell (2).

4. The acupuncture-proof and non-damaging needle according to claim 3, characterized in that: A convex guide block (321) is provided inside the circular tube (32), and the large circumferential surface of the guide block (321) is fixed to the inner wall of the base (3); the fourth-stage shield (214) is fixed between the small circumferential surface of the guide block (321) and the base (3).

5. The acupuncture-proof and non-damaging needle according to claim 4, characterized in that: The guide block (321) is provided with a through hole (3210) for the needle tube (102) to pass through.

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