Anti-injury blood taking needle

Abstract

The utility model discloses an anti-injury blood taking needle which comprises a puncture needle body with a needle head. The puncture needle body is sleeved with the protective cylinder, and the protective cylinder slides and overturns in the axial direction of the puncture needle body; the puncture needle body comprises an embedding groove formed in the axial direction of the puncture needle body, and a limiting block is arranged in the embedding groove; the protective barrel comprises a shell with an opening in one side and a sliding rail arranged in the shell in the axial direction of the protective barrel, the sliding rail slides in cooperation with the embedding groove, the limiting block is embedded in the sliding rail, and the limiting block slides to the end, with the opening, of the shell in the sliding rail and then turns over so that the needle head on the puncture needle can be exposed to collect blood of a patient. By means of the structure, the problems that after a puncture needle cap of an existing blood taking needle is removed, the needle cap is lost, and needle pricking injuries are caused inevitably in the process of sleeving the needle cap back are solved; and the sealing performance and the damage prevention effect of the needle cap on the needle head part are poor. In addition, the anti-injury blood taking needle can achieve multiple purposes, and the first connector and the second connector are connected with other instruments to achieve multiple functions.

Description

Technical Field

[0001] The utility model relates to the technical field of blood collection equipment, in particular to an anti-damage blood collection needle. Background Art

[0002] Venous blood sampling is one of the most common invasive nursing procedures in clinical practice and is an essential step in obtaining patient laboratory data and diagnosing diseases. However, according to monitoring results from the U.S. Centers for Disease Control and Prevention (CDC), at least 1 million accidental needlestick injuries occur each year, and nurses account for 80% of those injured. The risk of occupational infection of blood-borne diseases among medical personnel is 2 to 19 times that of the general population, and more than 80% of these injuries are attributed to needlestick injuries.

[0003] Currently, there are a variety of anti-trauma or anti-needlestick lancets on the market. Some lancets have spring structures or separate needle caps and anti-trauma designs. Spring-loaded lancets are delicate and require high material quality. Under long-term compression, the springs can deform, preventing the needle tip from puncturing properly and increasing the risk of accidental injuries. Separate designs also feature a small, transparent, and easily lost needle cap, potentially causing pressure damage to the patient's skin.

[0004] At present, disposable two-way venous blood collection needles are mainly used in clinical practice. They are mainly composed of three parts: puncture needle, connecting tube and blood collection needle. In clinical practice, the operation of removing the puncture needle protective tube requires the cooperation of both hands. This process may cause needle stick injuries. In addition, the existing puncture needle protective tube has poor sealing and damage prevention effects on the needle tip. The needle tip is easily exposed to the outside world, increasing the risk of infection for patients in clinical practice. In addition, if multiple vacuum blood collection tubes are required for collection, the end of the blood blocking sleeve of the blood collection needle will have serious blood stains, which can easily cause finger contamination. In addition, the blood sample collection requirements of blood culture bottles are high, and there is no needle holder of matching size on the market.

[0005] Therefore, a kind of damage-proof blood collection needle is badly needed to overcome the above problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an anti-damage blood collection needle, which solves the problem that the process of removing the puncture needle protection tube of the existing blood collection needle may cause needle stick injuries and the protection tube has poor sealing and anti-damage effects on the needle tip.

[0007] In order to solve the above technical problems, the utility model provides an anti-damage blood collection needle comprising:

[0008] A puncture needle body with a needle tip, and a protective tube sleeve which is sleeved on the puncture needle body and slides and flips along the axial direction of the puncture needle body;

[0009] The puncture needle body includes an engaging groove provided along the axial direction of the puncture needle body, and a limiting block is provided in the engaging groove;

[0010] The protective tube includes: a shell with an opening on one side, a slide rail arranged in the shell along the axial direction of the protective tube, the slide rail slides in cooperation with the engaging groove, the limit block is engaged in the slide rail, and the limit block slides along the slide rail to one end of the shell opening and then flips over to expose the needle tip on the puncture needle for blood sampling from the patient.

[0011] As an improvement of the present invention, sliding grooves are provided on both sides of the inner wall of the slide rail, and a fixing portion is provided on the side of the slide groove away from the opening, and the fixing portion is engaged and fixed with the limit block.

[0012] As an improvement of the present invention, sliding rods are respectively provided on both sides of the limit block, and the sliding rods extend into the sliding grooves to slide.

[0013] As an improvement of the present invention, the bottom of the fixing portion is connected and fixed to the sliding groove, one wall surface of the fixing portion is set as an inclined surface, and the other wall surface is set as a blocking wall.

[0014] As an improvement of the present invention, the fixing portion is configured as a right-angled triangle shaped protrusion, the sliding rod slides along the inclined surface, and the blocking wall is used to block the sliding rod from sliding.

[0015] As an improvement of the present invention, one end of the slide rail extends out of the housing and is provided with a movable opening.

[0016] As an improvement of the present invention, a hand-held portion is rotatably connected to the shell.

[0017] As an improvement of the present invention, it also includes a first hose, a first connector, a second hose, and a second connector. One end of the first hose is connected to the puncture needle body and the other end is connected to the first connector. One end of the second hose is connected to the first connector and the other end is connected to the second connector.

[0018] As an improvement of the present invention, the first joint includes a first connecting portion and a first lower joint;

[0019] The first connecting portion is configured as a tubular structure and is detachably connected to the first lower joint.

[0020] As an improvement of the present invention, the second joint includes a second connecting portion and a second lower joint;

[0021] The second connecting portion is a truncated cone-shaped structure, and a thread structure is provided on the inner peripheral wall and the outer peripheral wall of the bottom;

[0022] The second lower connector is detachably connected to the second connecting portion. The second lower connector is connected to a blood collecting needle, and a needle holder is provided on the blood collecting needle.

[0023] After adopting such a design, the utility model has at least the following advantages:

[0024] (1) The puncture needle body (vein puncture end) of the anti-damage blood collection needle is protected by a slidable and flippable protective tube, and the needle is sealed before use, so that the needle on the puncture needle body remains sterile; the protective tube can re-engage the needle after the needle has collected blood, and can slide and engage with the engaging groove through the slide rail to lock and fix the needle to prevent it from being reused, and further ensure the sealing to prevent the needle from pricking medical staff after use.

[0025] (2) A slide groove is provided on both side walls of the track, a locking portion is provided in the slide groove, and the locking portion is locked and fixed with the slide rod, so that the protective tube can reseal and lock the used needle to avoid injury and infection to medical staff.

[0026] (3) In addition, the blood collection needle can be used for multiple purposes. It can be used independently for venous blood collection. Through the first connector and the second connector, it can be connected to various arteriovenous indwelling needles for blood collection. It can also be connected to a central venous catheter for blood collection for further blood culture and arteriovenous blood gas analysis.

[0027] (4) The blood collection needle is separated from other devices by detachably connecting the first connecting part of the first connector and the first lower connector, and detachably connecting the second connecting part of the second connector and the second lower connector, so that garbage can be quickly sorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Figure 1 It is a schematic diagram of the overall structure of the anti-damage blood collection needle in one embodiment of the utility model.

[0030] Figure 2 It is a structural schematic diagram of the puncture needle body in the utility model.

[0031] Figure 3 It is a structural diagram of the protective tube in the utility model.

[0032] Figure 4 yes Figure 3 A is a partial enlargement of the figure.

[0033] Figure 5 It is an overall cross-sectional view of the initial state of the anti-damage blood collection needle in one embodiment of the present utility model.

[0034] Figure 6 yes Figure 5 A partial enlarged view of B.

[0035] Figure 7 This is an overall cross-sectional view of the anti-traumatic blood collection needle in use.

[0036] Figure 8 yes Figure 7 A partial enlarged view of Figure C.

[0037] Figure 9 It is a structural schematic diagram of the first joint and the second joint in the utility model.

[0038] Figure 10 It is a cross-sectional view of the second connecting portion in the present invention.

[0039] Description of reference numerals:

[0040] 1. Puncture needle body; 11. Fitting groove; 12. Limit block; 121. Sliding rod;

[0041] 2. Protective tube; 21. Housing; 211. Movable opening; 212. Handle; 22. Slide rail; 23. Slide groove; 24. Fixing part; 241. Inclined surface; 242. Blocking wall;

[0042] 3. First hose;

[0043] 4. First joint; 41. First connecting portion; 42. First lower joint;

[0044] 5. Second hose;

[0045] 6. Second connector; 61. Second connecting portion; 62. Second lower connector; 621. Blood collecting needle; 622. Needle holder. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0047] See Figures 1 to 8 A specific embodiment of an anti-damage blood collection needle is shown. The anti-damage blood collection needle is used to solve the problem that the process of removing the puncture needle protective tube from the existing blood collection needle may cause needle stick injuries and the protective tube has poor sealing and anti-damage effects on the needle tip. By arranging a slide rail inside the shell, the protective tube can slide and flip along the puncture needle, and after use, it can be engaged with the puncture needle body to lock the used needle, thereby preventing medical staff from being injured by the needle and causing infection.

[0048] like Figures 1 to 3As shown, in this embodiment, the damage-proof blood collection needle includes a puncture needle body 1 with a needle tip, which is sleeved on the puncture needle body 1 and slides and flips along the axial direction of the puncture needle body 1. The puncture needle body 1 includes an engaging groove 11 opened along the axial direction of the puncture needle body 1, and a limit block 12 is provided in the engaging groove 11. The protective tube 2 includes a shell 21 with an opening on one side, and a slide rail 22 is arranged in the shell 21 along the axial direction of the protective tube 2. The slide rail 22 slides in cooperation with the engaging groove 11, and the limit block 12 is engaged with the slide rail 22. The limit block 12 slides along the slide rail 22 to one end of the opening of the shell 21 and then flips over to expose the needle tip on the puncture needle for blood collection from the patient. In clinical practice, when performing venous blood collection for patients, the aseptic operation principle is strictly followed, and a suitable puncture site is conventionally selected. After disinfection and drying, the protective tube 2 is gently pushed to slide and flip the protective tube 2 on the puncture needle body 1 to expose the needle tip. After the puncture is successful, the needle tip is initially fixed with an infusion patch.

[0049] Further, if Figures 1 to 8 As shown, a slide groove 23 is provided on both sides of the inner wall of the slide rail 22, and a fixing portion 24 is provided on the side away from the opening in the slide groove 23. The fixing portion 24 is fixedly engaged with the limit block 12, and a slide rod 121 is provided on both sides of the limit block 12. The slide rod 121 extends to slide in the slide groove 23, and the bottom of the fixing portion 24 is connected and fixed to the slide groove 23. One wall surface is set as an inclined surface 241, and the other wall surface is set as a blocking wall 242. By respectively arranging the slide rods 121 on both sides of the limit block 12, (combined with Figure 1 and Figure 7 After the puncture needle body 1 has finished collecting blood, the protective cylinder 2 can be re-engaged in the position of the needle tip to prevent the medical staff from being pricked by the needle tip after use.

[0050] The present invention also provides another embodiment that can realize the flipping of the protective tube 2 and the puncture needle after sliding. A slide rail 22 is provided in the protective tube 2, and the slide rail 22 extends axially along the protective tube 2 to the open end, and two symmetrically arranged slide grooves 23 are provided on the inner walls on both sides of the slide rail 22. The ends of the slide grooves 23 are provided with a snap structure. Needle wings are provided on both sides of the puncture needle body 1 for easy needle holding. A limit block 12 is provided at the bottom of the puncture needle body 1, and the limit block 12 extends into the slide rail 22 and slides along the slide rail 22, so that the protective tube 2 can slide axially on the puncture needle body 1. When the protective tube 2 slides forward to the end relative to the puncture needle body 1, the slide rods 121 provided on both sides of the limit block 12 are connected with the snaps in the slide groove 23, so that the protective tube 2 slides axially along the puncture needle body 1 and flips, and the flipping angle can be greater than 90°, ensuring that the protective tube 2 will not slip due to excessive flipping angle.

[0051] Preferably, the fixing portion 24 is configured as a right-angled triangle-shaped protrusion, and the slide bar 121 slides along the inclined surface 241, and the blocking wall 242 is used to prevent the slide bar 121 from sliding. It should be noted that the fixing portion 24 can be designed as a right-angled triangle-shaped protrusion or as an inclined curved plate with an inclined setting. The inclined surface of the inclined curved plate can be rigid or elastically deformable. As long as the slide bar 121 can pass normally along the inclined surface, the blocking wall 242 can be integrally formed with the inclined surface. The slide bar 121 slides forward through the inclined surface 241, and when the slide bar 121 slides back, it engages with the other wall of the inclined surface 241 to prevent the slide bar 121 from sliding, thereby achieving the locking and fixing of the protective tube 2 and the puncture needle body 1, making it convenient for medical staff to recycle the used needle to avoid needle injuries.

[0052] Specifically, one end of the slide rail 22 extends out of the shell 21 and is provided with a movable opening 211. The one end of the slide rail 22 extends out of the shell 21 to enable the protective tube 2 to slide along the puncture needle body 1 and flip over, so that the flipping angle of the protective tube 2 is greater than 90°, and will not hinder medical staff from performing needle blood collection operations during the process of drawing blood from patients.

[0053] like Figure 3 As shown, a hand-held portion 212 is rotatably connected to the shell 21, and the hand-held portion 212 can be rotated on the shell 21. The hand-held portion 212 can be pulled open for convenient hand-held operation by medical staff. When the needle is packaged or recovered, the hand-held portion 212 can be screwed back onto the shell 21 to reduce the occupied area. The blood collection needle (venous blood collection needle) has needle wings to hold the needle, and a needle holder 622 can be provided for inserting into the blood collection tube, which facilitates the medical staff to perform blood collection operations.

[0054] In addition, the damage-resistant blood collection needle of the present invention can also achieve multiple uses of one needle.

[0055] Combine Figure 1As shown, the damage-resistant blood collection needle also includes a first hose 3, a first connector 4, a second hose 5, and a second connector 6; one end of the first hose 3 is connected to the puncture needle body 1; the other end is connected to the first connector 4; one end of the second hose 5 is connected to the first connector 4, and the other end is connected to the second connector 6. Figure 7 、 9 As shown in Figure 10, the first connector 4 includes a first connecting part 41 and a first lower connector 42. The first connecting part 41 is configured as a tubular structure and is detachably connected to the first lower connector 42. The second connector 6 includes a second connecting part 61 and a second lower connector 62. The second connecting part 61 is a truncated cone structure, and a threaded structure is provided on the inner peripheral wall and the outer peripheral wall of the bottom. The second lower connector 62 is detachably connected to the second connecting part 61. The second lower connector 62 is connected to a blood collecting needle 621, and the blood collecting needle 621 is provided with a needle holder 622.

[0056] Specifically, when the patient needs to have an intravenous needle inserted for blood collection, the knob of the blood collection needle can be unscrewed, and the subsequent blood collection components can be directly connected to the intravenous needle through the first connecting part 41. The blood collecting needle 621 comes with a needle holder 622. The blood collecting needle 621 pierces the rubber stopper at the top of the vacuum blood collection tube to collect blood. When collecting blood culture and venous blood gas at the same time, the blood collecting needle 621 can also be unscrewed and directly connected to the syringe needle or blood gas needle or replaced with a new blood collecting needle.

[0057] For example, if multiple vacuum blood collection tubes are required, there will be serious blood stains on the end of the blood blocking sleeve of the blood collecting needle 621, which can easily cause finger contamination. In addition, the blood sample collection requirements of the blood culture bottle are high. The model of the above-mentioned needle holder provided by the utility model can be changed to connect with the corresponding blood collection bottle and the blood collecting needle needle can be replaced.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Those skilled in the art can make some simple modifications, equivalent changes or modifications based on the technical content disclosed above, which fall within the scope of protection of the present invention.

Claims

1. A damage-resistant blood collection needle, characterized in that: include: a puncture needle body having a needle head; A protective tube is sleeved on the puncture needle body and slides and flips along the axial direction of the puncture needle body; The puncture needle body includes an engaging groove provided along the axial direction of the puncture needle body, and a limiting block is provided in the engaging groove; The protective tube includes a shell with an opening on one side, and a slide rail is arranged in the shell along the axial direction of the protective tube. The slide rail slides in cooperation with the engaging groove, and the limit block is engaged in the slide rail. The limit block slides along the slide rail to one end of the shell opening and then flips over to expose the needle tip on the puncture needle body for blood sampling from the patient.

2. The damage-resistant blood collection needle according to claim 1, characterized in that: Slide grooves are provided on both sides of the inner wall of the slide rail, and a fixing portion is provided on a side of the slide groove away from the opening, and the fixing portion is engaged and fixed with the limit block.

3. The damage-resistant blood collection needle according to claim 2, characterized in that: Slide rods are respectively provided on both sides of the limit block, and the slide rods extend into the slide grooves and slide; And / or a buckle is provided in the end of the slide groove, and the slide rod is connected to the buckle, which is used to limit the position of the protective tube when it is turned over.

4. The damage-resistant blood collection needle according to claim 3, characterized in that: The bottom of the fixing portion is connected and fixed to the sliding groove, one wall surface of the fixing portion is set as an inclined surface, and the other wall surface is set as a blocking wall.

5. The damage-resistant blood collection needle according to claim 4, characterized in that: The fixing portion is configured as a right-angled triangle shaped protrusion, the slide bar slides along the inclined surface, and the blocking wall is used to block the slide bar from sliding.

6. The damage-resistant blood collection needle according to claim 1, characterized in that: One end of the slide rail extends out of the housing and is provided with a movable opening.

7. The damage-resistant blood collection needle according to claim 1, characterized in that: A hand-held part is rotatably connected to the shell.

8. The damage-resistant blood collection needle according to claim 1, characterized in that: It also includes a first hose, a first connector, a second hose, and a second connector; one end of the first hose is connected to the puncture needle body, and the other end is connected to the first connector; one end of the second hose is connected to the first connector, and the other end is connected to the second connector.

9. The damage-resistant blood collection needle according to claim 8, characterized in that: The first joint includes a first connecting portion and a first lower joint; The first connecting portion is configured as a tubular structure and is detachably connected to the first lower joint.

10. The damage-resistant blood collection needle according to claim 8, characterized in that: The second joint includes a second connecting portion and a second lower joint; The second connecting portion is a truncated cone-shaped structure, and a thread structure is provided on the inner peripheral wall and the outer peripheral wall of the bottom; The second lower connector is detachably connected to the second connecting portion. The second lower connector is connected to a blood collecting needle, and a needle holder is provided on the blood collecting needle.

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