Safety spring-loaded blood taking needle with rotating position changing trigger

Abstract

This invention discloses a safety rebound blood collection needle with a rotating repositioning trigger and needle holder, comprising a housing, a trigger frame slidably embedded in the inner wall of the housing, a rotating frame drivenly connected to the lower end of the trigger frame, a return spring jointly installed between the lower end of the rotating frame and the bottom surface of the housing, and a double-ended injection needle fixedly installed at the lower end of the rotating frame; two spaced supports are fixedly connected to the upper side of the outer wall of the housing, and a connecting shaft is fixedly connected between the two supports, with a trigger cover movably sleeved on the connecting shaft. The trigger cover can be flipped around the connecting shaft to cover the opening at the upper end of the housing and press down on the trigger frame. This invention, through the cooperation of the housing, trigger cover, trigger frame, rotating frame, and the compressed return spring, achieves automatic retraction of the double-ended injection needle into the housing by pressing down the trigger cover. The housing isolates the double-ended injection needle from personnel, improving personnel safety, and prevents personnel from approaching or contacting the double-ended injection needle during retraction, ensuring high operational safety.

Description

Technical Field

[0001] This invention relates to the field of blood collection needle technology, and in particular to a safety rebound blood collection needle with a rotating needle holder and trigger mechanism. Background Technology

[0002] Blood collection needles are among the best-selling medical device products on the market. In recent years, with the improvement of medical standards, more and more people have begun to pay attention to the safety of medical personnel. Data shows that blood collection needle injuries caused by needle breakage or improper operation by medical personnel have occurred in various countries around the world, differing only in number. How to effectively prevent blood collection needle injuries and make blood collection safer and more reliable has become an urgent problem that the market needs to solve. Therefore, we propose a safety rebound blood collection needle with a rotating needle holder and trigger mechanism. Summary of the Invention

[0003] The main objective of this invention is to provide a safety rebound blood collection needle with a rotating needle holder and trigger mechanism, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A rotating, trigger-activated, safety rebound blood collection needle with a needle holder includes a housing, which is barrel-shaped and open at the top. A trigger frame is slidably embedded in the inner wall of the housing. A rotating frame is drivenly connected to the lower end of the trigger frame. A return spring is installed between the lower end of the rotating frame and the bottom surface of the housing. The lower end of the rotating frame passes through the lower end of the housing and extends to the bottom of the housing. A double-ended injection needle is inserted and fixedly installed at the lower end of the rotating frame. A needle sleeve is fitted in the middle of the upper end of the rotating frame, and the needle sleeve is located inside the trigger frame. The upper part of the double-ended injection needle extends upward into the needle sleeve. Two spaced supports are fixedly connected to the upper side of the outer wall of the housing. A connecting shaft is fixedly connected between the two supports. A trigger cover is movably fitted on the connecting shaft. The trigger cover can be flipped around the connecting shaft and placed at the upper opening of the housing. The trigger cover can also move downward relative to the connecting shaft and the housing to press down the trigger frame.

[0006] Preferably, the outer shell includes a storage bucket and a connecting bucket. The upper ends of both the storage bucket and the connecting bucket are open. The connecting bucket is fixedly connected to the lower end of the storage bucket and communicates with it. Four second-order sliding grooves are arranged in a circular array around the central axis of the storage bucket on the side wall. Vertically distributed second-order dividing posts are fixedly installed on the groove walls of the second-order sliding grooves. The second-order dividing posts divide the second-order sliding grooves into second-order downward guide grooves and second-order rebound guide grooves, with the second-order rebound guide grooves located counterclockwise from the second-order downward guide grooves. Four first-order sliding grooves are arranged in a circular array around the central axis of the connecting bucket on the side wall. Vertically distributed first-order dividing posts are fixedly installed on the groove walls of the first-order sliding grooves. The first-order dividing posts divide the first-order sliding grooves into first-order downward guide grooves and first-order rebound guide grooves, with the first-order rebound guide grooves located counterclockwise from the first-order downward guide grooves.

[0007] Preferably, the first partition column and the lower wall of the first chute are spaced apart, and the first chute is connected to the inner cavity of the storage bucket; the second chute penetrates downward through the lower end face of the storage bucket and upward through the upper end face of the storage bucket, and the lower end of the second partition column is spaced apart from the bottom surface of the storage bucket; a guide tube is fixedly installed on the bottom surface of the connecting bucket, the inner cavity of the guide tube penetrates the lower end face of the connecting bucket, and a return spring is sleeved on the guide tube and abuts against the bottom surface of the connecting bucket.

[0008] Preferably, four installation guide grooves are provided on the inner wall of the storage bucket, and the four installation guide grooves are alternately arranged with four No. 2 sliding grooves. Four limiting windows are provided on the outer wall of the storage bucket, and the four limiting windows are respectively connected to the four installation guide grooves. An auxiliary window connected to the No. 1 sliding groove is provided on the outer wall of the connecting bucket, and the auxiliary window is located below the No. 1 dividing column. The support is fixed on the outer wall of the storage bucket.

[0009] Preferably, the trigger cover includes a cover body, the lower end of the cover body is open, the upper end of the cover body is integrally provided with a cap, the cap is connected to the cover body, the upper side wall of the cover body is fixedly connected to a mounting seat, the mounting seat is movably sleeved on the connecting shaft; the lower side wall of the cover body is fixedly connected to four trigger blocks, the four trigger blocks are distributed in a circular array with the central axis of the cover body as the center; the four trigger blocks correspond to the positions of four mounting guide grooves respectively.

[0010] Preferably, the trigger frame includes a connecting ring, and four transmission rods and four driving blocks are fixedly connected to the outer surface of the connecting ring. The four transmission rods and four driving blocks are arranged in a circular array with the central axis of the connecting ring as the center, and the four transmission rods and four driving blocks are alternately arranged. The lower part of one side of each of the four transmission rods is inclined clockwise towards the center of the transmission rod to form a transmission surface. The four transmission rods are slidably arranged in four No. 2 downward pressure guide grooves, and the four driving blocks are located in four limiting windows.

[0011] Preferably, the rotary frame includes a transmission frame, with a connecting tube and a lower needle tube fixedly connected to the lower end of the transmission frame, and an upper needle tube fixedly connected to the upper end of the transmission frame. The lower needle tube is located inside the connecting tube and communicates with the upper needle tube. Four transmission blocks are fixedly connected to the peripheral side of the transmission frame, and the four transmission blocks are arranged in a circular array with the central axis of the transmission frame as the center. Four locking blocks are fixedly connected to the lower part of the peripheral side of the connecting tube, and the four locking blocks are arranged in a circular array with the central axis of the connecting tube as the center. A return spring is sleeved on the lower needle tube, a needle sleeve is sleeved on the upper needle tube, and a double-ended injection needle is inserted into the lower needle tube and the upper needle tube.

[0012] Preferably, the connecting tube is inserted into the connecting barrel, and the lower needle tube is inserted into the guide tube; four transmission blocks are respectively set in four No. 2 slide grooves, and the four transmission blocks respectively cooperate with four No. 2 spring guide grooves; four locking blocks are respectively set in four No. 1 slide grooves, and the four locking blocks respectively cooperate with four No. 1 spring guide grooves.

[0013] Preferably, the four transmission surfaces are in contact with the surfaces of the four transmission blocks respectively, and the contact between the transmission surfaces and the surfaces of the transmission blocks forms an inclined transmission structure; when the transmission surfaces move to the bottom surface of the storage bucket, they push the transmission blocks to rotate counterclockwise.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Through the cooperation of the outer shell, trigger cover, trigger frame, rotating frame, and a compressed return spring, after the double-ended injection needle is used, the trigger cover presses down on the trigger frame, pushing the rotating frame to rotate counterclockwise. This causes the transmission block to move from below the second partition post to the second spring guide groove, and the locking block to move from below the first partition post to the first spring guide groove. At this time, the return spring rebounds upward, causing the transmission block to move upward in the second spring guide groove, the locking block to move upward in the first spring guide groove, and the entire rotating frame to move upward. This causes the double-ended injection needle and needle sheath to move upward, retracting the double-ended injection needle into the outer shell, thus achieving isolation and protection of the double-ended injection needle. This effectively reduces the occurrence of needle injuries caused by needle breakage or improper operation by medical personnel. This invention, by pressing down on the trigger cover, automatically retracts the double-ended injection needle into the outer shell, isolating the double-ended injection needle from personnel, improving personnel safety, and ensuring high operational safety by preventing close contact with the double-ended injection needle during retraction. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the safety spring-loaded blood collection needle with needle holder rotation and repositioning trigger of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the rotating and repositioning triggered safety rebound blood collection needle with needle holder of the present invention;

[0018] Figure 3This is a schematic diagram of the outer shell structure;

[0019] Figure 4 This is a cross-sectional view of the outer casing;

[0020] Figure 5 This is a schematic diagram of the trigger cover structure;

[0021] Figure 6 This is a schematic diagram of the trigger frame structure;

[0022] Figure 7 This is a schematic diagram of the slewing frame structure;

[0023] Figure 8 This is a partial structural diagram showing the double-ended injection needle retracted into the outer casing.

[0024] In the diagram: 1. Double-ended injection needle; 2. Outer shell; 3. Support; 31. Connecting shaft; 4. Trigger cover; 5. Trigger frame; 6. Rotating frame; 7. Needle sheath; 8. Return spring; 21. Storage bucket; 211. Limiting window; 22. Connecting bucket; 221. Guide tube; 222. Auxiliary window; 23. No. 1 slide groove; 231. No. 1 downward pressure guide groove; 232. No. 1 springback guide groove; 24. No. 1 separator column; 25. II 251. No. 2 downward guide groove; 252. No. 2 rebound guide groove; 26. No. 2 separator column; 27. Installation guide groove; 41. Cover; 42. Cap; 43. Mounting base; 44. Trigger block; 51. Connecting ring; 52. Transmission rod; 53. Drive block; 54. Transmission surface; 61. Transmission frame; 62. Connecting pipe; 63. Lower needle tube; 64. Upper needle tube; 65. Transmission block; 66. Locking block. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] like Figure 1-7 As shown, the safety rebound blood collection needle with a rotating needle holder and trigger mechanism includes a housing 2, which is barrel-shaped and open at the top. A trigger frame 5 is slidably embedded in the inner wall of the housing 2, and the trigger frame 5 can slide up and down along the inner wall of the housing 2. A rotating frame 6 is connected to the lower end of the trigger frame 5, and when the trigger frame 5 moves down, it pushes the rotating frame 6 to rotate counterclockwise. A return spring 8 is installed between the lower end of the rotary frame 6 and the bottom surface of the outer casing 2, and the return spring 8 is in a compressed state; the lower end of the rotary frame 6 passes through the lower end of the outer casing 2 and extends to the bottom of the outer casing 2, and a double-headed injection needle 1 is inserted and fixedly installed at the lower end of the rotary frame 6. A needle sleeve 7 is sleeved in the middle of the upper end of the rotary frame 6. The needle sleeve 7 is located inside the trigger frame 5, and the upper part of the double-headed injection needle 1 extends upward to the inside of the needle sleeve 7; two spaced supports 3 are fixedly connected to the upper side of the outer wall of the outer casing 2, and a connecting shaft 31 is fixedly connected between the two supports 3. A trigger cover 4 is movably sleeved on the connecting shaft 31. The trigger cover 4 can be flipped around the connecting shaft 31 and placed at the upper opening of the outer casing 2. The trigger cover 4 can be moved downward relative to the connecting shaft 31 and the outer casing 2 to press down the trigger frame 5.

[0029] As a further explanation of the above technical solution, the outer shell 2 includes a storage bucket 21 and a connecting bucket 22. The upper ends of both the storage bucket 21 and the connecting bucket 22 are open. The connecting bucket 22 is fixedly connected to the lower end of the storage bucket 21 and communicates with the storage bucket 21. Four secondary sliding grooves 25 are provided on the side wall of the storage bucket 21 in a circular array centered on the central axis of the storage bucket 21. Vertically distributed secondary dividing posts 26 are fixedly provided on the groove wall of the secondary sliding grooves 25. The secondary dividing posts 26 divide the secondary sliding grooves 25 into secondary lower sections. The first sliding groove 251 and the second rebound groove 252 are provided on the side wall of the connecting barrel 22, with the second rebound groove 252 located in the counterclockwise direction of the second downward pressing groove 251. The second sliding groove 252 is located in the counterclockwise direction of the second downward pressing groove 251. The first sliding groove 23 is provided in a circular array with the central axis of the connecting barrel as the center. The first sliding groove 23 is provided with vertically distributed first dividing column 24 on the groove wall surface. The first dividing column 24 divides the first sliding groove 23 into the first downward pressing groove 231 and the first rebound groove 232. The first rebound groove 232 is located in the counterclockwise direction of the first downward pressing groove 231.

[0030] Furthermore, the first partition column 24 and the lower groove wall of the first slide 23 are spaced apart, and the first slide 23 is connected to the inner cavity of the storage bucket 21; the second slide 25 penetrates downward through the lower end face of the storage bucket 21 and upward through the upper end face of the storage bucket 21; the lower end of the second partition column 26 is spaced apart from the bottom surface of the storage bucket 21; a guide tube 221 is fixedly installed on the bottom surface of the connecting bucket 22, and the inner cavity of the guide tube 221 penetrates the lower end face of the connecting bucket 22; the return spring 8 is sleeved on the guide tube 221 and abuts against the bottom surface of the connecting bucket 22; when the return spring 8 is in a compressed state, the rotating frame 6 abuts against the lower end face of the first partition column 24 and the lower end face of the second partition column 26 respectively, so as to keep the return spring 8 in a compressed state.

[0031] Furthermore, four installation guide grooves 27 are provided on the upper side of the inner wall of the storage bucket 21. The four installation guide grooves 27 are alternately arranged with four second sliding grooves 25. Four limiting windows 211 are provided on the outer wall of the storage bucket 21. The four limiting windows 211 are respectively connected to the four installation guide grooves 27. An auxiliary window 222 connected to the first sliding groove 23 is provided on the outer wall of the connecting bucket 22. The auxiliary window 222 is located below the first dividing column 24. The support 3 is fixed on the outer wall of the storage bucket 21.

[0032] As a further explanation of the above technical solution, the trigger cover 4 includes a cover body 41, the lower end of the cover body 41 is open, and the upper end of the cover body 41 is integrally provided with a cap 42, which is connected to the cover body 41. A mounting seat 43 is fixedly connected to the upper side wall of the cover body 41, and the mounting seat 43 is movably sleeved on the connecting shaft 31. Four trigger blocks 44 are fixedly connected to the lower side wall of the cover body 41. The four trigger blocks 44 are arranged in a circular array with the central axis of the cover body 41 as the center. The four trigger blocks 44 correspond to the positions of the four mounting guide grooves 27, and the four trigger blocks 44 can be pressed into the four mounting guide grooves 27 respectively. Then, they move down along the mounting guide grooves 27 and press on the trigger frame 5, pushing the trigger frame 5 to move down.

[0033] As a further explanation of the above technical solution, the trigger frame 5 includes a connecting ring 51. Four transmission rods 52 and four driving blocks 53 are fixedly connected to the outer surface of the connecting ring 51. The four transmission rods 52 and four driving blocks 53 are arranged in a circular array around the central axis of the connecting ring 51, and the four transmission rods 52 and four driving blocks 53 are alternately arranged. The lower part of one side of each of the four transmission rods 52 is inclined clockwise towards the center of the transmission rod 52 to form a transmission surface 54. The four transmission rods 52 are slidably disposed in four second-level downward pressure guide grooves 251, and the transmission rods 52 can slide up and down along the second-level downward pressure guide grooves 251. The four driving blocks 53 are located in four limiting windows 211, and when the rotating frame 6 abuts against the lower end face of the first dividing post 24 and the lower end face of the second dividing post 26, the driving blocks 53 abut against the upper inner wall of the limiting window 211, and the driving blocks 53 can slide up and down within the limiting window 211.

[0034] As a further explanation of the above technical solution, the rotary frame 6 includes a transmission frame 61. The lower end of the transmission frame 61 is fixedly connected to a connecting tube 62 and a lower needle tube 63, and the upper end of the transmission frame 61 is fixedly connected to an upper needle tube 64. The lower needle tube 63 is located inside the connecting tube 62 and communicates with the upper needle tube 64. Four transmission blocks 65 are fixedly connected to the peripheral side of the transmission frame 61. The four transmission blocks 65 are arranged in a circular array with the central axis of the transmission frame 61 as the center. Four locking blocks 66 are fixedly connected to the lower part of the peripheral side of the connecting tube 62. The four locking blocks 66 are arranged in a circular array with the central axis of the connecting tube 62 as the center. A return spring 8 is sleeved on the lower needle tube 63, a needle sleeve 7 is sleeved on the upper needle tube 64, and a double-ended injection needle 1 is inserted into the lower needle tube 63 and the upper needle tube 64.

[0035] Furthermore, the connecting tube 62 is inserted into the connecting barrel 22, and the lower needle tube 63 is inserted into the conduit 221; four transmission blocks 65 are respectively set in four second-order sliding grooves 25, and the four transmission blocks 65 respectively cooperate with four second-order spring guide grooves 252; four locking blocks 66 are respectively set in four first-order sliding grooves 23, and the four locking blocks 66 respectively cooperate with four first-order spring guide grooves 232. When the return spring 8 is in the compressed state, the four transmission blocks 65 abut against the lower ends of the four second-order separating posts 26, and the four locking blocks 66 abut against the lower ends of the four first-order separating posts 24.

[0036] Four transmission surfaces 54 respectively contact the surfaces of four transmission blocks 65, and the contact between the transmission surfaces 54 and the surfaces of the transmission blocks 65 forms an inclined transmission structure; when the transmission surfaces 54 move towards the bottom surface of the storage bucket 21, they push the transmission blocks 65 to rotate counterclockwise, causing the entire rotating frame 6 to rotate counterclockwise, moving the transmission blocks 65 from below the second partition post 26 to the second spring guide groove 252, and moving the locking block 66 from below the first partition post 24 to the first spring guide groove 232. At this time, the return spring 8 rebounds upward, causing the transmission blocks 65 to move upward in the second spring guide groove 252, and the locking block 66 to move upward in the first spring guide groove 232, causing the entire rotating frame 6 to move upward, thereby causing the double-headed injection needle 1 and the needle sleeve 7 to move upward, and the double-headed injection needle 1 to be retracted into the outer shell 2. At this time, the trigger block 44 is engaged in the limiting window 211, so that the cap 42 covers the double-headed injection needle 1, as shown. Figure 8 As shown, this achieves isolation and protection for the dual-headed injection needle 1.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A rotating and repositioning-triggered safety rebound blood collection needle with a needle holder, comprising a housing (2), characterized in that: The outer casing (2) is barrel-shaped and open at the top. The outer casing (2) includes a storage bucket (21) and a connecting bucket (22). A trigger frame (5) is slidably embedded in the inner wall of the storage bucket (21). An inclined transmission surface (54) is provided at the lower end of the trigger frame (5). A rotating frame (6) is provided below the trigger frame (5). A transmission block (65) is provided on the outer periphery of the rotating frame (6). The transmission surface (54) and the inclined surface of the transmission block (65) are in contact to form an inclined transmission structure. A second sliding groove (25) is provided on the side wall of the storage bucket (21). A second sliding groove (25) is provided in the second sliding groove (25). The first dividing column (26) divides the space into the second pressing guide groove (251) and the second rebound guide groove (252); the side wall of the connecting barrel (22) is provided with the first sliding groove (23), and the first dividing column (24) is provided in the first sliding groove (23), which is divided into the first pressing guide groove (231) and the first rebound guide groove (232); a return spring (8) is provided between the lower end of the rotating frame (6) and the bottom surface of the outer shell (2); a double-headed injection needle (1) is fixedly installed at the lower end of the rotating frame (6); a support (3), a connecting shaft (31) and a flip-down lower support are provided on the upper side of the outer wall of the outer shell (2). The trigger cover (4) is pressed; the trigger frame (5) includes a connecting ring (51) and a transmission rod (52) located outside the connecting ring (51). The transmission surface (54) is formed on the lower part of one side of the transmission rod (52). The transmission rod (52) is slidably disposed in the second pressing guide groove (251); the rotary frame (6) includes a transmission frame (61), a connecting pipe (62) connected to the lower end of the transmission frame (61), a transmission block (65) located around the transmission frame (61), and a locking block (66) located around the connecting pipe (62). The connecting pipe (62) is inserted into the connecting barrel (22). Inside, the transmission block (65) is fitted into the second slide groove (25) and abuts against the lower end of the second partition column (26). The locking block (66) is fitted into the first slide groove (23) and abuts against the lower end of the first partition column (24). The pressing trigger cover (4) drives the trigger frame (5) to move down and pushes the rotating frame (6) to rotate counterclockwise through the inclined plane transmission, so that the transmission block (65) and the locking block (66) slide into the second spring guide groove (252) and the first spring guide groove (232) respectively. The reset spring (8) drives the rotating frame (6) and the double-headed injection needle (1) to spring back upward and be stored in the outer shell (2).

2. The safety rebound blood collection needle with needle holder rotation and repositioning trigger as described in claim 1, characterized in that: The upper ends of the storage bucket (21) and the connecting bucket (22) are both open. The connecting bucket (22) is fixedly connected to the lower end of the storage bucket (21) and is in communication with the storage bucket (21). The second slide groove (25) is arranged in a circular array with the central axis of the storage bucket (21) as the center. The second partition column (26) is vertically arranged and divides the second slide groove (25) into the second downward guide groove (251) and the second return groove. The second spring guide groove (252) is located counterclockwise from the second pressing guide groove (251); the first slide groove (23) is arranged in a ring array with the central axis of the connecting barrel as the center; the first partition column (24) is set vertically and divides the first slide groove (23) into the first pressing guide groove (231) and the first spring guide groove (232), and the first spring guide groove (232) is located counterclockwise from the first pressing guide groove (231).

3. The safety rebound blood collection needle with needle holder rotation and repositioning trigger as described in claim 2, characterized in that: The first separator column (24) is spaced apart from the lower wall of the first chute (23); the second chute (25) passes through the storage bucket (21) vertically, and the lower end of the second separator column (26) is spaced apart from the bottom surface of the storage bucket (21); the bottom surface of the connecting bucket (22) is provided with a guide tube (221), and the reset spring (8) is sleeved on the outside of the guide tube (221).

4. The safety rebound blood collection needle with needle holder rotation and repositioning trigger as described in claim 3, characterized in that: The storage bucket (21) has an installation guide groove (27) on the upper side of its inner wall and a limiting window (211) on its outer wall; the connecting bucket (22) has an auxiliary window (222) on its outer wall; and the support (3) is fixed to the outer wall of the storage bucket (21).

5. The safety rebound blood collection needle with needle holder and rotational repositioning trigger as described in claim 1, characterized in that: The trigger cover (4) includes a cover body (41), a cap (42), a mounting base (43), and a trigger block (44). The trigger block (44) presses down to drive the trigger frame (5) to move downward.

6. The safety rebound blood collection needle with needle holder rotation and repositioning trigger as described in claim 1, characterized in that: The rotating frame (6) also includes a lower needle tube (63) and an upper needle tube (64), and a return spring (8) is sleeved on the outside of the lower needle tube (63).

7. The safety spring-loaded blood collection needle with needle holder rotation and repositioning trigger as described in claim 6, characterized in that: The lower syringe (63) is inserted into the catheter (221).

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