Safety non-destructive needle

Abstract

The present invention discloses a safe and non-destructive needle, comprising a box body formed by a base and an upper cover, the lower bottom surface of the base is provided with a needle hole for the needle tube to pass through, the upper cover is detachably provided with a butterfly wing, the butterfly wing is connected with a catheter, the upper cover has an opening so that the end of the needle tube is fixedly connected with the butterfly wing and extends into the catheter, the inner surface of the upper cover has a group of extension walls extending toward the base, the extension wall divides the interior of the box body into at least a first accommodating chamber, a second accommodating chamber, and a third accommodating chamber, the bottom of the first accommodating chamber has a needle hole, and the top thereof is an opening, a retractable film is provided in the first accommodating chamber, the two ends of the retractable film are respectively welded with the extension wall and the end of the butterfly wing, an anti-needle puncture shrapnel is provided in the second accommodating chamber, the fixed end of the anti-needle puncture shrapnel is clamped in the third accommodating chamber, and the movable end thereof is translated toward the needle tube by its own elastic force. The present invention comprehensively blocks the needle tube pulled out after use to prevent it from being punctured again and leaking liquid, thereby greatly improving the safety of use.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a safe and non-destructive needle. Background Art

[0002] The non-injury needle is a special needle for drug administration and infusion used with an implantable central venous infusion port. After the drug administration is completed, the medical staff needs to pull out the non-injury needle. In the traditional needle removal process, the medical staff needs to fix the infusion port base with one hand and pull out the non-injury needle with the other hand. Since the non-injury needle tube will generate a certain recoil force when it is separated from the infusion port, it may cause stabbing to the medical staff and affect their normal work. And when the non-injury needle is pulled out, it is easy to bring out some liquid medicine and body fluids, causing secondary infection and leading to safety hazards.

[0003] In the prior art, in order to solve the above problems, some anti-needle puncture mechanisms are provided for the non-damaged needles, such as those disclosed in patents US7758544, US8574197, and US9149574. However, these solutions all have some problems. For example, US7758544 uses a connecting rod structure to support the non-damaged needle to prevent it from rebounding, but it cannot solve the problem of needle tube leakage; US8574197 has a complex structure and high manufacturing cost. US9149574 uses a three-stage stretching tube to fully protect the needle tube, but the initial height of the stretching tube in use is too high, which affects the operation, and the tight fit between the stretching tubes is prone to leakage due to failure to pull them into place.

[0004] Therefore, how to solve the problem of accidental puncture and leakage of non-damage needles is an urgent problem to be solved. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a safe and non-destructive needle.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A safety non-destructive needle comprises a box body formed by a base and an upper cover, wherein a needle hole for a needle tube to pass through is provided on the lower bottom surface of the base, a butterfly wing is detachably provided on the upper cover, the butterfly wing is connected to a catheter, an opening is provided on the upper cover so that the end of the needle tube is fixedly connected to the butterfly wing and extends into the catheter, an inner surface of the upper cover comprises a group of extension walls extending toward the base, the extension walls divide the interior of the box body into at least a first accommodating chamber, a second accommodating chamber, and a third accommodating chamber, the bottom of the first accommodating chamber comprises the needle hole, and the top thereof comprises the opening, a stretch film is provided in the first accommodating chamber, two ends of the stretch film are respectively welded to the extension wall and the end of the butterfly wing, and are sleeved on the outside of the needle tube; in a first state, the needle tube passes through the needle hole, the butterfly wing is located on the upper cover, and the stretch film is contracted in the first accommodating chamber; in a second state, the butterfly wing is separated from the upper cover, and the stretch film is stretched and unfolded to completely wrap the part of the needle tube protruding from the box body.

[0008] Preferably, an anti-needle-puncture shrapnel is provided in the second accommodating cavity, the fixed end of the anti-needle-puncture shrapnel is clamped in the third accommodating cavity, and the movable end thereof is translated toward the needle tube under the action of its own elastic force; in the first state, the movable end abuts against the needle tube; in the second state, the movable end abuts against the box body and seals the needle tip of the needle tube within the box body.

[0009] Preferably, the stretch film is composed of an inner film layer and an outer film layer, the inner film layer is composed of PET, the outer film layer is composed of PE, and the unfolded length of the stretch film is not less than the vertical length of the needle tube.

[0010] Preferably, at least one side of the bottom end of the stretch film has an upwardly bent corner portion, and the corner portion wraps around the outer side wall of the extension wall of the first accommodating cavity, and the two are fused together.

[0011] Preferably, the front end of the butterfly wing has an arc-shaped slot, the slot matches the arc of the bending portion of the needle tube, and the top end of the telescopic film extends into the slot and is welded to the butterfly wing.

[0012] Preferably, the upper surface of the base has an inwardly concave slide groove, and the anti-needle puncture spring is slidably embedded in the slide groove. In the second state, the movable end abuts against the inner wall of the slide groove.

[0013] Preferably, the middle portion of the anti-needle puncture shrapnel is an elastic portion bent upward, the elastic portion is located in the second accommodating cavity, the movable end extends straight forward to form a flat plate surface, and is driven by the elastic portion to translate forward, and in the first state, the elastic portion has a certain amount of shrinkage.

[0014] Preferably, the thickness of the movable end is equivalent to the groove depth of the slide groove, and there is a convex portion protruding upward between the movable end and the elastic portion. In the second state, the convex portion blocks the through hole in the stretch film.

[0015] Preferably, the lower bottom surface of the base is a flat surface, and the head of the base has two vertically upward insertion rods, and the tail thereof has a clamping block, the head of the upper cover has a groove matching the insertion rods, and the tail thereof has a clamping slot matching the clamping block, the insertion rods are inserted in the grooves, and the clamping block is clamped in the clamping slots, so that the base and the upper cover are tightly fitted.

[0016] Preferably, the angled portion is located between the insertion rod and the groove, and the three are tightly fitted.

[0017] Preferably, the surface of the upper cover has a limiting groove and a limiting recess, the bottom surface of the butterfly wing has an elastic claw matching the limiting groove, and the butterfly wing is matched with or separated from the upper cover through the elastic claw and the limiting groove; the tail of the butterfly wing has a connecting port for connecting the catheter, and the connecting port is partially embedded in the recess; both sides of the upper cover have handles matching the butterfly wings.

[0018] The beneficial effects of the present invention are mainly reflected in:

[0019] 1. After the needle is pulled out, an automatically retractable anti-needle puncture shrapnel is used to block the needle to prevent the needle from being punctured again, thereby achieving the purpose of anti-needle puncture; a retractable telescopic film is used to provide all-round protection for the used needle, avoiding the risk of residual liquid medicine in the needle leaking out, greatly improving the safety of the use of non-damage needles;

[0020] 2. The elasticity of the anti-needle puncture shrapnel drives its translation, so that it does not need to add other driving components, optimizes the internal structure of the non-damaging needle, and reduces the manufacturing cost;

[0021] 3. When the movable end of the anti-needle puncture shrapnel abuts against the inner wall of the slide groove under the drive of its elastic part, a sound will be generated, which can effectively monitor whether the anti-needle puncture shrapnel has moved into place, and thereby remind medical staff whether the anti-needle puncture shrapnel has blocked the needle tube in place;

[0022] 4. The stretch film itself is soft and thin, so its volume is small in the contracted state, which will not increase the height of the non-damage needle and will not affect the weight of the non-damage needle too much;

[0023] 5. The stretch film is composed of two film layers. The inner film layer is made of PET, which makes the inner film layer non-ductile to avoid excessive pulling out of the needle tube. The outer film layer is made of PE, which has a good welding effect to ensure the stability of the connection between the two ends of the stretch film and the upper cover and the butterfly wing. The double film layer structure of the inner film layer and the outer film layer can also improve the overall strength of the stretch film and reduce the risk of its breakage.

[0024] 6. The bottom end of the stretch film has a folded corner, which extends into the groove. On the one hand, it can increase the contact area between the stretch film and the upper cover to ensure the connection between the stretch film and the upper cover. On the other hand, it can make the insertion rod fit tightly with the groove to ensure the connection stability between the base and the upper cover.

[0025] 7. The arc-shaped structure of the slot increases the contact area between the stretch film and the butterfly wing, and increases the angle between the stretch film and the butterfly wing, thereby alleviating the bending degree of the stretch film, preventing the stretch film from breaking at the connection with the butterfly wing, ensuring the connection between the top of the stretch film and the butterfly wing, and preventing the liquid medicine in the stretch film from leaking out;

[0026] 8. The lower surface of the base is flat, reducing tiny corners, which is conducive to preventing bacterial colonization and providing safety in use;

[0027] 9. The concave slide groove is provided to guide and limit the movement of the anti-needle puncture shrapnel, and the thickness of the movable end of the anti-needle puncture shrapnel is increased to make it equal to the depth of the slide groove, thereby enhancing the strength of the movable end and improving the stability when the two are in contact;

[0028] 10. The convex part provided on the needle-puncture-proof spring piece can reduce the contact area between the spring piece and the slide groove, reduce the friction force, and ensure that the movable end is in contact with the inner wall of the slide groove under the action of elastic force; on the other hand, it can block the bottom of the telescopic film, enhance the sealing performance, and prevent the occurrence of liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0030] Figure 1 : An exploded schematic diagram of an embodiment of the present invention;

[0031] Figure 2 : A cross-sectional view of an embodiment of the present invention in a first state;

[0032] Figure 3 : Figure 2 A magnified view of part A;

[0033] Figure 4 : A schematic diagram of an embodiment of the present invention in a second state;

[0034] Figure 5 : A side view of a butterfly wing according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] 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 included in the protection scope of the present invention.

[0036] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, 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 cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0037] like Figures 1 to 5 As shown, the present invention discloses a safety type non-destructive needle, comprising a box body formed by a base 1 and an upper cover 2, wherein a needle hole 101 for a needle tube 3 to pass through is provided on the lower bottom surface of the base 1, and the characteristics are as follows: a butterfly wing 4 is detachably provided on the upper cover 2, and the butterfly wing 4 is connected to a catheter 5, and an opening 201 is provided on the upper cover 2 so that the end of the needle tube 3 is fixedly connected to the butterfly wing 4 and extends into the catheter 5, and the inner surface of the upper cover 2 has a group of extension walls 202 extending toward the base 1, and the extension wall 202 divides the interior of the box body into at least a first accommodating chamber 100, a second accommodating chamber 200, and a third accommodating chamber 300, and the bottom of the first accommodating chamber 100 has the needle hole 101, and the top thereof is the opening 201, and a telescopic film 6 is provided in the first accommodating chamber 100, and the two ends of the telescopic film 6 are respectively welded to the extension wall 202 and the end of the butterfly wing 4, and are sleeved on the outside of the needle tube 3.

[0038] like Figure 2 , Figure 3 As shown, in the first state, the needle tube 3 passes through the needle hole 101, the butterfly wing 4 is located on the upper cover 2, and the telescopic film 6 is contracted in the first accommodating cavity 100; Figure 4 As shown, in the second state, the butterfly wing 4 is separated from the upper cover 2, and the stretch film 6 is stretched and unfolded to completely wrap the portion of the needle tube 3 protruding from the box body.

[0039] Furthermore, an anti-needle-puncture shrapnel 7 is provided in the second accommodating cavity 200, and the fixed end 701 of the anti-needle-puncture shrapnel 7 is clamped in the third accommodating cavity 300, and the movable end 702 thereof is translated toward the needle tube 3 under the action of its own elastic force; in the first state, the movable end 702 abuts against the needle tube 3; in the second state, the movable end 702 abuts against the box body and seals the needle tip of the needle tube 3 in the box body.

[0040] The present invention uses an automatically retractable anti-needle puncture shrapnel 7 to block the needle tube 3 after the needle tube 3 is pulled out, so as to prevent the needle tube 3 from being punctured again from the needle hole 101, thereby achieving the purpose of anti-needle puncture. The retractable retractable film 6 is used to provide all-round protection for the used needle tube 3, thereby avoiding the risk of leakage of the residual liquid medicine in the needle tube 3, and greatly improving the safety of the use of the non-damage needle.

[0041] Specifically, the stretch film 6 is composed of an inner film layer 601 and an outer film layer 602, wherein the inner film layer 601 is composed of PET, and the outer film layer 602 is composed of PE. The length of the stretch film 6 after unfolding is not less than the vertical length of the needle tube 3. PET is non-ductile, so that the inner film layer 601 cannot be overstretched, which has a certain limit on the pull-out height of the needle tube 3 and prevents the needle tube 3 from detaching from the box body. PE has a good welding effect, which can ensure the stability of the connection between the two ends of the stretch film 6 and the upper cover and the butterfly wing. The double film layer structure of the inner film layer 601 and the outer film layer 602 can also improve the overall strength of the stretch film 6 and reduce the risk of its breakage. In addition, the stretch film 6 itself is soft and thin, so that its volume is small in the contracted state, and it will not increase the height of the non-damage needle, nor will it affect the weight of the non-damage needle itself too much, so that the stretch film 6 can minimize its impact on the use of the non-damage needle.

[0042] The lower bottom surface of the base 1 in this solution is a flat surface. Such a structure makes it difficult for the lower bottom surface of the base 1 to be stained and dirt-collected, which is beneficial to prevent bacterial colonization and improve the safety of use.

[0043] like Figures 1 to 3As shown, the head of the base 1 has two vertically upward plug rods 103, and the tail thereof has a card block 104. The head of the upper cover 2 has a groove 203 matching the plug rod 103, and the tail thereof has a card slot 204 matching the card block 104. The plug rod 103 is inserted into the groove 203, and the card block 104 is clamped in the card slot 204, so that the base 1 and the upper cover 2 are tightly matched. A group of protrusions 105 are also provided on the side of the base 1 to connect with the upper cover 2, so as to further improve the stability and reliability of the fixed connection between the base 1 and the upper cover 2. Such a clamping structure is relatively simple and easy to manufacture and assemble. Of course, in other feasible embodiments, the base 1 and the upper cover 2 can also be connected by other means, such as bonding.

[0044] Furthermore, at least one side of the bottom end of the stretch film 6 has an upwardly bent corner portion 603, and the corner portion 603 wraps around the outer wall of the extension wall 202 of the first accommodating cavity 100, and the two are fused. Such a structure can increase the contact area between the stretch film 6 and the upper cover 2, making the connection between the bottom end of the stretch film 6 and the upper cover 2 more firm and stable, preventing the stretch film 6 from being separated from the upper cover 2 during the stretching process, and effectively preventing the outflow of the liquid medicine. In other feasible embodiments, the bottom end of the stretch film 6 can also wrap around the outer wall of the entire first accommodating cavity 100. Figure 3 As shown, in a preferred embodiment, the angled portion 603 is located between the insertion rod 103 and the groove 203, and the three are tightly fitted. Such a structure further ensures the connection stability between the telescopic film 6 and the upper cover 2 on the one hand, and can ensure the tight fit between the insertion rod 103 and the groove 203 on the other hand, thereby ensuring the connection stability between the base 1 and the upper cover 2.

[0045] In order to ensure a stable connection between the telescopic film 6 and the butterfly wing 4, as Figure 2 , Figure 3 As shown, the front end of the butterfly wing 4 has an arc-shaped slot 401, and the slot 401 matches the arc of the bent portion of the needle tube 3, and the top end of the telescopic film 6 extends into the slot 401 and is welded to the butterfly wing 4. The arc-shaped structure of the slot 401 increases the contact area between the telescopic film 6 and the butterfly wing 4, and increases the angle between the connection between the telescopic film 6 and the butterfly wing 4, thereby alleviating the bending degree of the telescopic film 6, preventing the telescopic film 6 from breaking at the connection with the butterfly wing 4, ensuring the connection between the top end of the telescopic film 6 and the butterfly wing 4, and preventing the liquid medicine in the telescopic film 6 from leaking out.

[0046] like Figure 1 , Figure 2As shown, the upper surface of the base 1 has a concave slide groove 102, and the anti-needle puncture shrapnel 7 is slidably embedded in the slide groove 102. In the second state, the movable end 702 abuts against the inner wall of the slide groove 102. The setting of the slide groove 102 can guide and limit the anti-needle puncture shrapnel 7, avoiding displacement or skew when the anti-needle puncture shrapnel 7 moves inside the box body; and also makes the width of the anti-needle puncture shrapnel 7 larger than the needle hole 101, so that the needle tube 3 can be sealed by moving, without having to be too wide to ensure the blocking effect, which further saves materials and reduces manufacturing costs.

[0047] The middle part of the needle-puncture-proof shrapnel 7 is an elastic part 703 bent upward, and the elastic part 703 is located in the second accommodation cavity 200. In order to improve its elasticity, the center of the elastic part 703 is hollowed out, and the movable end 702 extends straight forward to form a flat plate surface, and is driven by the elastic part 703 to translate forward. In the first state, the elastic part 703 has a certain shrinkage, so that the needle-puncture-proof shrapnel 7 has sufficient elastic force to switch from the first state to the second state, ensuring that the movable end 702 abuts against the inner wall of the slide groove 102 in the second state to block the needle tube 3.

[0048] Furthermore, the thickness of the movable end 702 is equivalent to the groove depth of the slide groove 102, so as to increase the contact area between the movable end 702 and the slide groove 102 and the strength of the movable end 702, ensure the abutment between the two, and avoid the movable end 702 from being damaged or bent when abutting against the slide groove 102, resulting in failure to block the needle tube 3. In a preferred embodiment, the movable end 702 is formed by folding the end of the anti-needle puncture shrapnel 7, which simplifies the manufacturing on the one hand, and reduces the thickness and weight of the anti-needle puncture shrapnel 7 on the other hand. In other feasible embodiments, the movable end 702 can also be directly integrally formed.

[0049] like Figure 1 , Figure 2 , Figure 3 As shown, there is a convex portion 704 protruding upward between the movable end 702 and the elastic portion 703. In the second state, when the movable end 702 abuts against the slide 102, the convex portion 704 is just located at the bottom of the telescopic film 6. The interior of the telescopic film 6 has a through hole 604 for passing the needle tube 3. The width of the anti-acupuncture shrapnel 7 is not less than the aperture of the through hole 604, so that the convex portion 704 can block the through hole 604 to prevent the liquid medicine in the telescopic film 6 from leaking out, ensuring safety in use. In addition, the provision of the convex portion 704 can also reduce the contact area between the anti-acupuncture shrapnel 7 and the slide 102, reduce the friction between the two, and improve the elastic force of the anti-acupuncture shrapnel 7.

[0050] As 1 and Figure 5 As shown, the surface of the upper cover 2 has a limiting groove 205 and a limiting recess 206, the bottom surface of the butterfly wing 4 has an elastic claw 403 matching the limiting groove 205, and the elastic claw 403 is clamped in the limiting groove 205 in the first state, and separated from the limiting groove 205 in the second state; the tail of the butterfly wing 4 has a connecting port 402 for connecting the conduit 5, and the connecting port 402 is partially embedded in the recess 206. The setting of the limiting groove 205 and the limiting recess 206 allows the butterfly wing 4 to match or separate from the upper cover 2, and can prevent the butterfly wing 4 from rotating relative to the upper cover 2, and can avoid making the overall structure too high.

[0051] In order to further facilitate operation, the upper cover 2 has handles 207 on both sides thereof that match the butterfly wings 4 .

[0052] 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.

[0053] 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. A safe, non-destructive needle, comprising a box body formed by a base (1) and an upper cover (2) in cooperation with each other, wherein a needle hole (101) is provided on the lower bottom surface of the base (1) for a needle tube (3) to pass through, and characterized in that: The upper cover (2) is detachably provided with a butterfly wing (4), the butterfly wing (4) being connected to a catheter (5), the upper cover (2) having an opening (201) so that the end of the needle tube (3) is fixedly connected to the butterfly wing (4) and extends into the catheter (5), the inner surface of the upper cover (2) having a group of extension walls (202) extending toward the base (1), the extension walls (202) dividing the interior of the box body into at least a first accommodating chamber (100), a second accommodating chamber (200), and a third accommodating chamber (300), the bottom of the first accommodating chamber (100) having the needle hole (101), and the top of the first accommodating chamber (100) having the needle hole (101). An opening (201), a stretch film (6) is arranged in the first accommodating cavity (100), two ends of the stretch film (6) are respectively welded to the extension wall (202) and the end of the butterfly wing (4), and are sleeved on the outside of the needle tube (3); in a first state, the needle tube (3) passes through the needle hole (101), the butterfly wing (4) is located on the upper cover (2), and the stretch film (6) is contracted in the first accommodating cavity (100); in a second state, the butterfly wing (4) is separated from the upper cover (2), and the stretch film (6) is stretched and unfolded to completely wrap the portion of the needle tube (3) protruding from the box body; An anti-needle puncture spring sheet (7) is arranged in the second accommodating cavity (200); the fixed end (701) of the anti-needle puncture spring sheet (7) is clamped in the third accommodating cavity (300), and the movable end (702) thereof is translated toward the needle tube (3) by its own elastic force; in a first state, the movable end (702) abuts against the needle tube (3); in a second state, the movable end (702) abuts against the box body and seals the needle tip of the needle tube (3) in the box body; The upper surface of the base (1) has an inwardly concave slide groove (102), and the needle-puncture-proof spring sheet (7) is slidably embedded in the slide groove (102). In the second state, the movable end (702) abuts against the inner wall of the slide groove (102); The middle portion of the needle-puncture-proof spring sheet (7) is an elastic portion (703) bent upwards. The elastic portion (703) is located in the second accommodating cavity (200). The movable end (702) extends straight forward to form a straight plate surface and is driven by the elastic portion (703) to translate forward. In the first state, the elastic portion (703) has a certain amount of shrinkage. The thickness of the movable end (702) is equivalent to the groove depth of the slide groove (102), and there is a convex portion (704) protruding upward between the movable end (702) and the elastic portion (703). In the second state, the convex portion (704) blocks the through hole (604) in the telescopic film (6).

2. The safety non-destructive needle according to claim 1, characterized in that: The stretch film (6) is composed of an inner film layer (601) and an outer film layer (602), wherein the inner film layer (601) is composed of PET and the outer film layer (602) is composed of PE. The length of the stretch film (6) after unfolding is not less than the vertical length of the needle tube (3).

3. The safety non-destructive needle according to claim 1, characterized in that: At least one side of the bottom end of the stretch film (6) has an upwardly bent corner portion (603), and the corner portion (603) wraps around the outer side wall of the extension wall (202) of the first accommodating cavity (100), and the two are fused together.

4. The safety non-destructive needle according to claim 2, characterized in that: The front end of the butterfly wing (4) has an arc-shaped slot (401), the slot (401) matches the arc of the bent portion of the needle tube (3), and the top end of the telescopic film (6) extends into the slot (401) and is welded to the butterfly wing (4).

5. The safety non-destructive needle according to claim 3, characterized in that: The lower bottom surface of the base (1) is a flat surface, and the head of the base (1) has two vertically upward insertion rods (103), and the tail of the base (1) has a clamping block (104); the head of the upper cover (2) has a groove (203) matching the insertion rods (103), and the tail of the upper cover (2) has a clamping slot (204) matching the clamping block (104); the insertion rods (103) are inserted into the grooves (203), and the clamping block (104) is clamped in the clamping slot (204), so that the base (1) and the upper cover (2) are tightly matched.

6. The safety non-destructive needle according to claim 5, characterized in that: The angled portion (603) is located between the insertion rod (103) and the groove (203), and the three are tightly fitted.

7. The safety non-destructive needle according to claim 1, characterized in that: The surface of the upper cover (2) has a limiting groove (205) and a limiting recess (206); the bottom surface of the butterfly wing (4) has an elastic claw (403) matching the limiting groove (205); the butterfly wing (4) is matched with or separated from the upper cover (2) through the elastic claw (403) and the limiting groove (205); the tail of the butterfly wing (4) has a connecting port (402) for connecting to the conduit (5), and the connecting port (402) is partially embedded in the recess (206); and both sides of the upper cover (2) have handles (207) matching the butterfly wing (4).

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