Vein blood taking needle and vein blood taking system

Abstract

The vein blood taking needle comprises a blood taking needle tube, a connecting handle is fixedly arranged at one end of the blood taking needle tube, and the blood taking needle tube is sleeved with a protective sleeve; the handheld part is formed by protruding and extending the side surface of the connecting handle; the protective sleeve is hinged to the connecting handle, an opening is formed in one side of the protective sleeve, and when the protective sleeve rotates relative to the connecting handle in the first direction, the blood sampling needle tube penetrates into the cavity of the protective sleeve from the opening, so that the protective sleeve is arranged on the blood sampling needle tube in a sleeving mode; the puncture part is connected with a drainage tube, the other end of the drainage tube is connected to the connecting handle, and the puncture part is communicated with the blood taking needle tube through the drainage tube. The protecting sleeve is hinged to the connecting handle, so that the protecting sleeve can be directly rotated by a nurse to sleeve the protecting sleeve on the periphery of the blood sampling needle tube after blood sampling is completed, and the influence of the protecting sleeve on the operation of the nurse in the blood sampling process is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical auxiliary equipment, and in particular to a venous blood collection needle and a venous blood collection system. Background Art

[0002] Venous blood sampling is one of the routine operations for the diagnosis and treatment of various diseases, and it is also the main way for nurses to be injured by needles. Surveys and studies have shown that needle-stick injuries among nursing staff are related to a variety of risk factors, which are concentrated in the post-use processing of sharps, with 16.8% of them being medical waste, 15.5% being the removal of intravenous needles, 10.7% being the return of needles, and 5.7% being arterial and venous blood sampling. The consensus of experts on needle-stick prevention points out that the use of instruments with safety devices can effectively avoid needle-stick injuries and reduce the risk of occupational exposure for nurses.

[0003] In the related art, a safety blood collection needle comprises a needle tube and a needle handle at the blood collection end and other devices at the blood delivery end. The blood collection end and the blood delivery end are connected by a hose. A pressable plate is provided at the needle handle at the blood collection needle end. The plate is connected to a protective cover installed at the needle tube. By pressing the plate, the protective cover can be moved away from the needle tube, so that the nursing staff can successfully insert the needle tube.

[0004] However, when the nurse is inserting an injection, if the plate is loosened, the protective cover will press the patient's skin. To avoid the protective cover pressing the patient, the plate must be pressed all the time during the injection process to keep the protective cover away from the patient. However, pressing the plate hard all the time during the injection will distract the nurse's attention and control over the needle handle, making it inconvenient for the nurse to control the angle of the needle tube. Summary of the invention

[0005] The present application provides a venous blood collection needle and a venous blood collection system, which can solve the technical problem in the related technology that the nursing staff always needs to use extra force to press the plate during the needle insertion process, which makes it inconvenient for the nursing staff to control the angle of the needle tube.

[0006] In the first aspect, an embodiment of the present application provides a venous blood collection needle, which includes: a blood collection needle tube, a connecting handle is fixedly provided at one end of the blood collection needle tube, and a protective sleeve is provided on the outer sleeve of the blood collection needle tube; a hand-holding portion, the hand-holding portion is formed by a side protrusion of the connecting handle; a protective sleeve, the protective sleeve is hinged to the connecting handle, and one side of the protective sleeve has an opening, when the protective sleeve rotates along a first direction relative to the connecting handle, the blood collection needle tube penetrates into the cavity of the protective sleeve from the opening, so that the protective sleeve is arranged on the blood collection needle tube; a puncture portion, the puncture portion is connected to a drainage tube, the other end of the drainage tube is connected to the connecting handle, and the puncture portion is connected to the blood collection needle tube through the drainage tube.

[0007] In combination with the first aspect, in one embodiment, a protrusion is fixed on the side of the connecting handle close to the protective sleeve, and the protective sleeve is rotatably connected to the protrusion; a clamping block is also fixed on the side of the connecting handle close to the protective sleeve, and when the protective sleeve is mounted on the blood collection needle tube, the side of the protective sleeve away from the protrusion is fixed by the clamping block.

[0008] In combination with the first aspect, in one implementation, an elastic fixing piece is installed in the cavity of the protective sleeve, and the elastic fixing piece is sleeved on the blood collection needle tube.

[0009] In combination with the first aspect, in one embodiment, the hand-holding portion includes two hand-holding wings, both of which are formed by protruding from the side surfaces of the connecting handle, and the two hand-holding wings are arranged on opposite sides of the connecting handle.

[0010] In combination with the first aspect, in one embodiment, the venous blood collection needle further includes a fixing device, the fixing device is connected to the hand-held wing, and the fixing device is used to fix the hand-held part to the human body.

[0011] In combination with the first aspect, in one embodiment, the fixing device includes fixing tapes, the fixing tapes are respectively fixed to the two hand-held wings, and the fixing tapes are used to fix the hand-held part to the human body.

[0012] In combination with the first aspect, in one embodiment, the puncture part includes: a puncture needle, the puncture needle is connected to the drainage tube, an elastic protective piece is provided around the outer periphery of the puncture needle, and the puncture needle is used to puncture the blood collecting tube.

[0013] In combination with the first aspect, in one embodiment, the puncture portion further includes an operating block, the operating block is penetrated by the drainage tube, and the operating block is arranged on a side of the drainage tube close to the puncture needle.

[0014] In combination with the first aspect, in one embodiment, a protective cover is connected to the periphery of the operating block, the protective cover is spaced apart from the elastic protective member, and the protective cover extends in a direction away from the drainage tube, and the length of the protective cover along the extension direction of the puncture needle is greater than the length of the puncture needle.

[0015] In a second aspect, an embodiment of the present application provides a venous blood collection system, which includes: a blood collection needle tube, one end of which is fixedly provided with a connecting handle, and the outer sleeve of the blood collection needle tube is provided with a protective sleeve; a hand-held portion, which is formed by a convex extension of the side of the connecting handle; a protective sleeve, which is hinged to the connecting handle, and one side of the protective sleeve has an opening, and when the protective sleeve rotates relative to the connecting handle in a first direction, the blood collection needle tube penetrates into the cavity of the protective sleeve from the opening, so that the protective sleeve is arranged on the blood collection needle tube; a puncture portion The puncture part is connected to a drainage tube, the other end of the drainage tube is connected to the connecting handle, and the puncture part is connected to the blood collection needle tube through the drainage tube; the blood collection tube has an end cover, the end cover is provided with a center hole, and an elastic sealing structure is provided in the center hole; the puncture part includes a puncture needle, the puncture needle is connected to the drainage tube, and an elastic protective piece is provided around the outer periphery of the puncture needle. When the puncture needle pierces the blood collection tube, the elastic protective piece cooperates with the elastic sealing structure to compress the elastic protective piece.

[0016] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0017] By arranging a protective cover on the periphery of the blood collection needle tube, the blood collection needle tube can be protected by the protective cover before it is used. The puncture part is connected to the drainage tube to smoothly complete the blood collection work, and the protective cover is hinged to the connecting handle, so that after the blood collection is completed, the nursing staff can directly rotate the protective cover to put the protective cover on the periphery of the blood collection needle tube, effectively reducing the risk of medical staff being stabbed when withdrawing the needle. When drawing blood, the nursing staff's hand can be spaced from the protective cover, so that the protective cover reduces the impact of the nursing staff's operation and is more conducive to controlling the angle of the blood collection needle tube. It solves the technical problem in the related technology that the nursing staff needs to use extra force to press the plate and observe and control the moving direction of the protective cover when pricking the needle, which makes it inconvenient for the nursing staff to control the angle of the needle tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the venous blood collection needle provided in an embodiment of the present application.

[0020] In the figure:

[0021] 1. Blood collection needle tube; 11. Connecting handle; 12. Protective cover; 13. Bump; 14. Snap-on block; 15. Hand-held wing; 16. Fixing tape;

[0022] 2. Drainage tube;

[0023] 31. Puncture needle; 32. Elastic protective part; 33. Protective cover. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] An embodiment of the present application provides a venous blood collection needle, which can solve the technical problem in the related art that the nursing staff always needs to use extra force to press the plate during the needle insertion process, which makes it inconvenient for the nursing staff to control the angle of the needle tube.

[0026] See also Figure 1 As shown, a venous blood collection needle provided by the present application may include: a blood collection needle tube 1, one end of the blood collection needle tube 1 is fixedly provided with a connecting handle 11, and the blood collection needle tube 1 is fixed to the connecting handle 11 in a manner that a needle fixing shrapnel is provided in the connecting handle 11, and a protective sleeve 12 is provided on the outer sleeve of the blood collection needle tube 1, and when in actual blood drawing work, the end of the blood collection needle tube 1 can be inserted into a human blood vessel; a hand-held portion, the hand-held portion is formed by a lateral protrusion of the connecting handle 11, and a nursing staff can control the blood collection needle tube 1 by holding the hand-held portion; a protective sleeve, the protective sleeve is hinged to the connecting handle 11, and when the protective sleeve is not yet mounted on the blood collection needle tube 1, it can be attached to one side of the connecting handle 11, and one side of the protective sleeve has an opening When the protective sleeve rotates along the first direction relative to the connecting handle 11, the blood collection needle tube 1 penetrates into the cavity of the protective sleeve from the opening, so that the protective sleeve is sleeved on the blood collection needle tube 1. In the embodiment of the present application, the first direction is the clockwise direction. After the protective sleeve is rotated clockwise around the connecting handle 11, the blood collection needle tube 1 can be sleeved into the cavity of the protective sleeve from the beginning of the protective sleeve. In some other embodiments, the first direction may also be the counterclockwise direction; the puncture part, the puncture part is connected with a drainage tube 2, the other end of the drainage tube 2 is connected to the connecting handle 11, and the puncture part is connected to the blood collection needle tube 1 through the drainage tube 2, so that blood can be collected by the blood collection needle tube 1 and then flow to the puncture part.

[0027] The embodiment of the present application arranges a protective sleeve 12 on the periphery of the blood collection needle tube 1, so that the blood collection needle tube 1 can be protected by the protective sleeve 12 before it is used, and can effectively prevent the nursing staff from being stabbed while preventing the blood collection needle tube 1 from being contaminated by bacteria as much as possible. The puncture part is connected with the drainage tube 2 to smoothly complete the blood collection work, and the puncture part can be connected with the blood collection blood vessel so that the blood can be smoothly collected by the blood collection blood vessel, and the protective sleeve is hinged to the connecting handle 11, so that after the blood collection is completed, the nursing staff can directly rotate the protective sleeve to put the protective sleeve on the periphery of the blood collection needle tube 1, effectively reducing the risk of medical staff being stabbed when collecting the needle. Preferably, the protective sleeve can be attached to one side of the connecting handle 11 before the venous blood collection needle is used. When it needs to be used, the protective sleeve can be rotated clockwise to be put on the periphery of the blood collection needle tube 1, and the protective sleeve is rotated after the blood drawing is completed. In some other embodiments, the protective sleeve can also be arranged on the outer periphery of the protective sleeve 12 before the venous blood collection needle is used. When the blood collection needle tube 1 needs to be used, the protective sleeve is first rotated counterclockwise to a position that fits the connecting handle 11 to expose the protective sleeve 12 and the blood collection needle tube 1. When the blood collection is completed, the protective sleeve is rotated clockwise to be arranged on the outer periphery of the blood collection needle tube 1. Regardless of the setting method, the interference of the protective sleeve can be effectively reduced when the nursing staff draws blood. It is convenient to control the insertion direction of the blood collection needle tube 1 by directly holding the handpiece. This method allows the nursing staff to focus all their attention on the blood collection needle tube 1, which is more conducive to controlling the angle of the blood collection needle tube 1, and solves the technical problem in the related technology that the nursing staff needs to use extra force to press the plate and observe and control the moving direction of the protective sleeve 12 when inserting the needle, which makes it inconvenient for the nursing staff to control the angle of the needle tube.

[0028] In some optional embodiments, a protrusion 13 is fixed to the side of the connecting handle 11 close to the protective sleeve 12, and the protective sleeve is rotatably connected to the protrusion 13. Preferably, the thickness of the protrusion 13 along the direction perpendicular to the extension of the connecting handle 11 is greater than the thickness of the connecting handle 11 along the direction perpendicular to the extension of the connecting handle 11, so that the connection area between the protective sleeve and the protrusion 13 can be larger and the connection is more stable. A clamping block 14 is also fixed to the side of the connecting handle 11 close to the protective sleeve 12. When the protective sleeve is mounted on the blood collection needle tube 1, the side of the protective sleeve away from the protrusion 13 is fixed by the clamping block 14, that is, when the protective sleeve is mounted on the outer periphery of the blood collection needle tube 1, the protective sleeve is close to one end of the connecting handle 11, one side of which is hinged to the protrusion 13, and the other side is clamped to the clamping block 14, so that the protective sleeve is not easy to open after being mounted on the blood collection needle tube 1. Preferably, the protrusion 13 and the clamping block 14 are both arranged at 0.1 to 0.5 cm on one side of the connecting handle 11 close to the blood collection needle tube 1 .

[0029] In some other embodiments, an elastic fixing part is installed in the cavity of the protective sleeve, and the elastic fixing part may also be provided with a crack on the side of the protective sleeve having an opening. Since the elastic fixing part has a certain elasticity, the crack can be ignored before and after the protective sleeve is mounted on the blood collection needle tube 1. Only when the protective sleeve is mounted on the blood collection needle tube 1, when the blood collection needle tube 1 contacts the elastic fixing part, the crack can be opened so that the blood collection needle tube 1 can enter the elastic fixing part. The elastic fixing part is mounted on the blood collection needle tube 1, and the elastic fixing part may have a perforation in the middle. When the blood collection needle tube 1 is mounted on the elastic fixing part, it is located in the perforation. After the blood collection needle tube 1 is mounted on the perforation of the elastic fixing part, it is not easy to fall out, which can prevent the nursing staff from being injured during handling.

[0030] In some optional embodiments, the handheld portion includes two handheld wings 15, both of which are formed by protruding from the side of the connecting handle 11, and the two handheld wings 15 are arranged on opposite sides of the connecting handle 11. The handheld wings 15 can enable the nursing staff to better control the insertion direction of the blood collection needle tube 1 by holding the handheld wings 15 when pricking the needle. And because the handheld wings 15 are arranged to facilitate the nursing staff to take, their length along the direction perpendicular to the extension of the connecting handle 11 will also be longer. When the protective cover is attached to one side of the connecting handle 11, the distance between the nursing staff's hand and the protective cover can also be farther, effectively avoiding the influence of the protective cover on the pricking, and the handheld wings 15 are arranged on opposite sides of the connecting handle 11, so that the nursing staff can operate more conveniently whether with the left hand or the right hand.

[0031] In some optional embodiments, the venous blood collection needle also includes a fixing device, which is connected to the handheld wing 15, and the fixing device is used to fix the handheld part to the human body. Directly connecting the fixing device to the handheld wing 15 can make it easier for nursing staff to fix the handheld part to the human body after acupuncture, without having to look for other fixing devices.

[0032] In some optional embodiments, the fixing device includes a fixing tape 16, which can be a tearable tape, and the fixing tape 16 is respectively fixed to the two hand-held wings 15, and the fixing tape 16 is used to fix the hand-held part to the human body, and directly using the pasting method can be more convenient. In some other embodiments, the fixing device can also be other structures that are convenient for fixing.

[0033] In some optional embodiments, the puncture part includes: a puncture needle 31, the puncture needle 31 is connected to the drainage tube 2, and an elastic protective member 32 is provided around the outer periphery of the puncture needle 31. The puncture needle 31 is used to be pierced into the blood collecting tube. The length of the elastic protective member 32 along the extension direction of the puncture needle 31 can be greater than the length of the puncture needle 31 itself, so that the puncture needle 31 can be protected in all directions.

[0034] In some optional embodiments, the puncture part also includes an operating block, which is passed through the drainage tube 2 and is arranged on a side of the drainage tube 2 close to the puncture needle 31. The setting of the operating block can facilitate the nursing staff to hold the position of the operating block and insert the puncture needle 31 into the blood collecting tube.

[0035] Preferably, a protective cover 33 is connected to the periphery of the operating block, the protective cover 33 is spaced apart from the elastic protective member 32, and the protective cover 33 extends in a direction away from the drainage tube 2, and the length of the protective cover 33 along the extending direction of the puncture needle 31 is greater than the length of the puncture needle 31. Preferably, the operating block can be set to have a diameter greater than the diameter of a commonly used blood collection tube. After the protective cover 33 is installed on the periphery of the operating block, the protective cover 33 extends toward a side close to the tip of the puncture needle 31, so that after the puncture needle 31 pierces the blood collection tube, the protective cover 33 can surround the periphery of the blood collection tube. At this time, the protective cover 33 can be spaced apart from the outer wall of the blood collection tube. The provision of the protective cover 33 can effectively prevent blood from splashing when the nursing staff pulls the puncture needle 31 out of the blood collection tube, and also avoids the nursing staff from being contaminated by the blood at the end of the blood collection tube when pulling out the needle as much as possible.

[0036] The embodiment of the present application also provides a venous blood collection system, which may include: a blood collection needle tube 1, one end of the blood collection needle tube 1 is fixedly provided with a connecting handle 11, and the outer shell of the blood collection needle tube 1 is provided with a protective sleeve 12; a hand-held portion, the hand-held portion is formed by a lateral protrusion of the connecting handle 11; a protective sleeve, the protective sleeve is hinged to the connecting handle 11, one side of the protective sleeve has an opening, when the protective sleeve rotates along a first direction relative to the connecting handle 11, the blood collection needle tube 1 penetrates into the cavity of the protective sleeve from the opening, so that the protective sleeve is arranged on the blood collection needle tube 1; a puncture portion, the puncture portion is connected to a drainage tube 2, the other end of the drainage tube 2 is connected to the connecting handle 11, and the puncture portion is connected to the blood collection needle tube 1 through the drainage tube 2; a blood collecting blood vessel, the blood collecting blood vessel has an end cap, the end cap is provided with a central hole, an elastic sealing structure is provided in the central hole, and the elastic sealing structure It has a certain elasticity and a certain hardness; the puncture part includes a puncture needle 31, which is connected to the drainage tube 2. An elastic protective piece 32 is provided around the outer periphery of the puncture needle 31. When the puncture needle 31 penetrates the blood collecting tube, the elastic protective piece 32 cooperates with the elastic sealed structure to compress the elastic protective piece 32. That is, when the puncture needle 31 penetrates the blood collecting tube, due to the strong hardness of the puncture needle 31, it can smoothly pass through the elastic sealed structure and enter the cavity of the blood collecting tube. However, the hardness of the elastic protective piece 32 is weak and it has a certain elasticity. Therefore, after it contacts with the elastic sealed structure, it can be compressed and fit with the elastic sealed structure. This setting method enables the elastic protective piece 32 to protect the puncture needle 31 before the puncture needle 31 penetrates the blood collecting tube, and after the puncture needle 31 penetrates the blood collecting tube, it will not affect the blood in the puncture needle 31 from flowing into the blood collecting tube.

[0037] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 a limitation on the present application. 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0038] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0039] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A venous blood collection needle, characterized in that: It includes: A blood collection needle tube (1), wherein a connecting handle (11) is fixedly provided at one end of the blood collection needle tube (1), and a protective sleeve (12) is provided on the outer cover of the blood collection needle tube (1); A hand-held portion, the hand-held portion being formed by a lateral protrusion of the connecting handle (11); a protective sleeve, the protective sleeve being hinged to the connecting handle (11), one side of the protective sleeve having an opening, and when the protective sleeve rotates relative to the connecting handle (11) in a first direction, the blood collection needle tube (1) passes through the opening into the cavity of the protective sleeve, so that the protective sleeve is sleeved on the blood collection needle tube (1); The puncture part is connected to a drainage tube (2), the other end of the drainage tube (2) is connected to the connecting handle (11), and the puncture part is connected to the blood collection needle tube (1) through the drainage tube (2).

2. The venous blood collection needle according to claim 1, characterized in that: A protrusion (13) is fixed on one side of the connecting handle (11) close to the protective cover (12), and the protective cover is rotatably connected to the protrusion (13); A clamping block (14) is also fixed to the side of the connecting handle (11) close to the protective sleeve (12); when the protective sleeve is sleeved on the blood collection needle tube (1), the side of the protective sleeve away from the protrusion (13) is fixed by the clamping block (14).

3. The venous blood collection needle according to claim 2, characterized in that: An elastic fixing piece is installed in the cavity of the protective sleeve, and the elastic fixing piece is sleeved on the blood collection needle tube (1).

4. The venous blood collection needle according to claim 1, characterized in that: The hand-held portion comprises two hand-held wings (15), the two hand-held wings (15) are formed by protruding from the side surfaces of the connecting handle (11), and the two hand-held wings (15) are arranged on opposite sides of the connecting handle (11).

5. The venous blood collection needle according to claim 4, characterized in that: The venous blood collection needle also includes a fixing device, which is connected to the handheld wing (15) and is used to fix the handheld part to the human body.

6. The venous blood collection needle according to claim 5, characterized in that: The fixing device comprises a fixing tape (16), wherein the fixing tape (16) is respectively fixed to the two hand-held wings (15), and the fixing tape (16) is used to fix the hand-held part to the human body.

7. The venous blood collection needle according to claim 1, characterized in that: The puncture portion comprises: A puncture needle (31), the puncture needle (31) is connected to the drainage tube (2), an elastic protective piece (32) is provided around the outer periphery of the puncture needle (31), and the puncture needle (31) is used to pierce the blood collection tube.

8. The venous blood collection needle according to claim 7, characterized in that: The puncture section further comprises an operating block, the operating block is penetrated through the drainage tube (2), and the operating block is arranged on a side of the drainage tube (2) close to the puncture needle (31).

9. The venous blood collection needle according to claim 8, characterized in that: A protective cover (33) is connected to the outer periphery of the operating block. The protective cover (33) is spaced apart from the elastic protective member (32), and the protective cover (33) extends in a direction away from the drainage tube (2). The length of the protective cover (33) along the extension direction of the puncture needle (31) is greater than the length of the puncture needle (31).

10. A venous blood sampling system, characterized in that: It includes: A blood collection needle tube (1), wherein a connecting handle (11) is fixedly provided at one end of the blood collection needle tube (1), and a protective sleeve (12) is provided on the outer cover of the blood collection needle tube (1); A hand-held portion, the hand-held portion being formed by a lateral protrusion of the connecting handle (11); a protective sleeve, the protective sleeve being hinged to the connecting handle (11), one side of the protective sleeve having an opening, and when the protective sleeve rotates relative to the connecting handle (11) in a first direction, the blood collection needle tube (1) passes through the opening into the cavity of the protective sleeve, so that the protective sleeve is sleeved on the blood collection needle tube (1); a puncture portion, the puncture portion being connected to a drainage tube (2), the other end of the drainage tube (2) being connected to the connecting handle (11), and the puncture portion being connected to the blood collection needle tube (1) via the drainage tube (2); A blood collecting tube, wherein the blood collecting tube has an end cap, the end cap is provided with a central hole, and an elastic sealing structure is provided in the central hole; The puncture part comprises a puncture needle (31), the puncture needle (31) is connected to the drainage tube (2), and an elastic protective piece (32) is provided around the outer periphery of the puncture needle (31). When the puncture needle (31) pierces the blood collecting tube, the elastic protective piece (32) cooperates with the elastic sealing structure to compress the elastic protective piece (32).

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