Blood taking needle

Abstract

The utility model relates to the technical field of medical instruments, in particular to a blood taking needle which is characterized in that a needle moving frame is fixedly installed on the surface of a bandage, a sliding groove is formed in the surface of the needle moving frame, and a frosted surface is arranged on the surface of the needle moving frame; the moving rod is arranged in the needle moving frame, a rotating frame is fixedly installed in the middle of the moving rod, a rubber ball is rotationally arranged in the rotating frame, a needle head is inserted into the rubber ball, sliding blocks are fixedly connected to the two ends of the moving rod, and a telescopic groove is formed in the moving rod; the telescopic rod sliding rod is inserted into the telescopic groove, and a frosted block is fixedly arranged on the surface of the telescopic rod. The needle head is arranged above the bandage, the needle head is fixed to the limb of a patient through the bandage during blood sampling, then the angle of the needle head is adjusted to penetrate into the blood vessel of the patient for blood sampling, then the angle and the position of the needle head are locked by pressing the telescopic rod, and therefore the problem that the needle head falls off or hematoma is caused due to movement of the patient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a blood collection needle. Background Art

[0002] A blood collection needle is a tool used to collect blood samples during medical examinations. It is used to test various blood biochemical indicators and has the advantages of simple operation, fast blood collection, and little trauma.

[0003] In the prior art, the patent with publication number: CN108433733A discloses a blood collection needle, including a base, a needle tube seat, a protective sleeve and a needle tube sleeve, the base includes a base upper cover and a base lower cover, the needle tube seat is installed in a cavity formed by the base upper cover and the base lower cover, the needle tube seat is connected to the needle tube, the needle tube sleeve is arranged outside the needle tube, the needle tube seat upper sleeve is provided with a spring, the protective sleeve is arranged outside the needle tube seat, the first end of the protective sleeve contacts the spring, the protective sleeve is arranged in the base upper cover and the base lower cover, a card block is provided at one end of the protective sleeve close to the base, an elastic button is provided on the protective sleeve, the elastic button abuts against the base, a limiting mechanism is provided on the base upper cover, the elastic button is pressed, the elastic button is separated from the base, the protective sleeve slides towards the end away from the base under the action of the spring restoring elastic deformation, until the card block is arranged between the limiting mechanism and the base, and the protective sleeve completely wraps the needle tube, the blood collection needle has a disposable effect, has an anti-needle puncture effect, and has higher safety;

[0004] However, it is inconvenient to fix the needle of the blood collection needle in the prior art during use. When the patient who needs blood collection is in a period of abnormal behavior such as agitation, the needle of the blood collection needle may easily fall off due to the movement of the patient after piercing the patient's blood vessel, or the needle may pierce the blood vessel and cause hematoma. Utility Model Content

[0005] The purpose of the utility model is to provide a blood collection needle to solve the problems raised by the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A blood collection needle, comprising:

[0008] A binding belt, a needle moving frame is fixedly mounted on the surface of the binding belt, a sliding groove is provided on the surface of the needle moving frame, and a frosted surface is provided on the surface of the needle moving frame;

[0009] A moving rod, the moving rod is arranged inside the needle moving frame, a rotating frame is fixedly installed in the middle of the moving rod, a rubber ball is rotatably arranged inside the rotating frame, a needle is inserted inside the rubber ball, sliding blocks are fixedly connected at both ends of the moving rod, and a telescopic slot is opened inside the moving rod;

[0010] The telescopic rod and the telescopic rod sliding rod are inserted into the telescopic groove, and a frosting block is fixedly arranged on the surface of the telescopic rod.

[0011] Preferably, the needle moving frame is a "U"-shaped plate structure, and the sliding grooves are opened on both sides of the needle moving frame.

[0012] Preferably, the tail of the needle is connected to a blood collection tube.

[0013] Preferably, the sliding block is slidably arranged inside the sliding groove, a side groove is opened on the surface of the sliding block, the side groove is communicated with the telescopic groove, and a guide rod is fixedly arranged on the surface of the sliding block.

[0014] Preferably, a locking plate is slidably installed on the surface of the guide rod, the locking plate slides in contact with the surface of one end of the sliding block away from the moving rod, the end of the guide rod away from the sliding block is fixedly connected to a limiting plate, and a compression spring is arranged between the limiting plate and the locking plate.

[0015] Preferably, the telescopic groove passes through the sliding block, and the telescopic groove is communicated with the interior of the rotating frame.

[0016] Preferably, a pressing groove is provided at one end of the telescopic rod close to the rotating frame, and a locking groove is provided on the surface of the telescopic rod.

[0017] Preferably, the sanding block is arranged inside the side groove, and a side of the sanding block close to the sanding surface is arranged parallel to the sanding surface.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model arranges the needle above the bandage, and when drawing blood, the needle is first fixed to the patient's limb by the bandage, and then the angle of the needle is adjusted to pierce the patient's blood vessel for blood drawing, and then the angle and position of the needle are locked by pressing the telescopic rod, thereby avoiding the problem of needle falling off or hematoma caused by patient movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the telescopic rod structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the mobile rod of the utility model;

[0024] Figure 5 For this utility model Figure 4 Enlarged schematic diagram at point A in the middle.

[0025] In the figure: a binding band 1, a needle moving frame 2, a sliding groove 21, a frosted surface 22, a moving rod 3, a rotating frame 31, a sliding block 32, a side groove 33, a telescopic groove 34, a locking plate 35, a guide rod 36, a compression spring 37, a limit plate 38, a telescopic rod 4, a top pressure groove 41, a locking groove 42, a frosted block 43, a needle 5, a blood collection tube 51, and a rubber ball 6. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0027] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0028] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like 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 invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0031] Please refer to the attached Figure 1 To Attachment Figure 5 As shown, the utility model provides a blood collection needle, comprising:

[0032] A binding belt 1, a needle moving frame 2 is fixedly mounted on the surface of the binding belt 1, a sliding groove 21 is provided on the surface of the needle moving frame 2, the needle moving frame 2 is a "U"-shaped plate structure, the sliding groove 21 is provided on both sides of the needle moving frame 2, and a frosted surface 22 is provided on the surface of the needle moving frame 2;

[0033] The moving rod 3 is arranged inside the needle moving frame 2. A rotating frame 31 is fixedly installed in the middle of the moving rod 3. A rubber ball 6 is rotatably arranged inside the rotating frame 31. A needle 5 is inserted inside the rubber ball 6. The tail of the needle 5 is connected to a blood collection tube 51. The two ends of the moving rod 3 are fixedly connected to sliding blocks 32. A telescopic groove 34 is opened inside the moving rod 3. The telescopic groove 34 passes through the sliding block 32, and the telescopic groove 34 is connected to the inside of the rotating frame 31. The sliding block 32 is slidably arranged. The sliding block 32 is placed inside the sliding groove 21, and a side groove 33 is opened on the surface of the sliding block 32, and the side groove 33 is connected to the telescopic groove 34. A guide rod 36 is fixedly arranged on the surface of the sliding block 32, and a locking plate 35 is slidably installed on the surface of the guide rod 36. The locking plate 35 is slidably fitted with the surface of one end of the sliding block 32 away from the moving rod 3, and the end of the guide rod 36 away from the sliding block 32 is fixedly connected to a limiting plate 38, and a compression spring 37 is arranged between the limiting plate 38 and the locking plate 35;

[0034] A telescopic rod 4, wherein the sliding rod of the telescopic rod 4 is inserted into the interior of the telescopic groove 34, a pressing groove 41 is provided at one end of the telescopic rod 4 close to the rotating frame 31, a locking groove 42 is provided on the surface of the telescopic rod 4, a frosting block 43 is fixedly provided on the surface of the telescopic rod 4, the frosting block 43 is provided in the interior of the side groove 33, and a side of the frosting block 43 close to the frosted surface 22 is provided parallel to the frosted surface 22.

[0035] Embodiment 1:

[0036] The utility model provides a blood collection needle. When in use, firstly wrap the bandage 1 around the part of the patient where blood is required to be collected, the bandage 1 is connected by Velcro, and then the needle 5 is controlled to rotate by the tail of the needle 5, driving the rubber ball 6 to rotate inside the rotating frame 31, so as to adjust the angle of the needle 5. When the angle of the needle 5 is adjusted, the needle 5 is pushed to drive the moving rod 3 to move forward, so that the needle 5 pierces the patient's blood vessel to collect blood;

[0037] After the needle 5 pierces the patient's blood vessel, the end of the telescopic rod 4 is pressed to drive the telescopic rod 4 to move toward the telescopic groove 34 close to the rubber ball 6, so that the telescopic rods 4 on both sides of the rubber ball 6 squeeze the rubber ball 6 through the pressing groove 41, thereby preventing the rubber ball 6 from rotating and fixing the angle of the needle 5. At the same time, the frosting block 43 abuts against the frosting surface 22 to prevent the sliding block 32 from moving, thereby preventing the moving rod 3 from moving and fixing the position of the needle 5.

[0038] By arranging the needle 5 above the bandage 1, the needle 5 is first fixed to the patient's limb by the bandage 1 during blood collection, and then the angle of the needle 5 is adjusted to pierce the patient's blood vessel for blood collection, and then the angle and position of the needle 5 are locked by pressing the telescopic rod 4, thereby avoiding the problem of needle falling off or hematoma caused by patient movement.

[0039] Embodiment 2:

[0040] On the basis of Example 1, during the process of pressing the telescopic rod 4, the locking plate 35 is inserted into the locking groove 42 under the elastic force of the compression spring 37, locking the position of the telescopic rod 4. When the blood collection is completed, the needle 5 on both sides is pulled to disengage the needle 5 from the locking groove 42. At this time, the rebound force of the rubber ball 6 pushes the telescopic rod 4 away from the rubber ball 6, so that the frosted block 43 is separated from the frosted surface 22, thereby releasing the lock on the movable rod 3, allowing the movable rod 3 to move, driving the needle 5 to be withdrawn from the patient's blood vessel.

[0041] Working principle: A blood collection needle is a tool used to collect blood samples during medical examinations. When using a blood collection needle proposed by the utility model, first wrap the bandage 1 around the part of the patient where blood is required to be collected, the bandage 1 is connected by Velcro, and then the needle 5 is controlled to rotate by the tail of the needle 5, driving the rubber ball 6 to rotate inside the rotating frame 31, so as to adjust the angle of the needle 5. When the angle of the needle 5 is adjusted, the needle 5 is pushed to drive the moving rod 3 to move forward, so that the needle 5 pierces the patient's blood vessel for blood collection. After the needle 5 pierces the patient's blood vessel, the end of the telescopic rod 4 is pressed to drive the telescopic rod 4 to move toward the telescopic groove 34 close to the rubber ball 6. The telescopic rod 4 on both sides of the rubber ball 6 squeezes the rubber ball 6 through the pressing groove 41, thereby preventing the rubber ball 6 from rotating and fixing the angle of the needle 5. At the same time, the frosting block 43 abuts against the frosted surface 22 to prevent the sliding block 32 from moving, thereby preventing the moving rod 3 from moving and fixing the position of the needle 5. When the blood collection is completed, the needle 5 on both sides is pulled out of the locking groove 42. At this time, the resilience of the rubber ball 6 pushes the telescopic rod 4 in the direction away from the rubber ball 6, so that the frosting block 43 is separated from the frosted surface 22, thereby releasing the lock on the moving rod 3, allowing the moving rod 3 to move, and driving the needle 5 to be drawn out of the patient's blood vessel.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blood collection needle, characterized in that: include: A binding belt (1), a needle moving frame (2) being fixedly mounted on the surface of the binding belt (1), a sliding groove (21) being provided on the surface of the needle moving frame (2), and a frosted surface (22) being provided on the surface of the needle moving frame (2); A moving rod (3), the moving rod (3) being arranged inside the needle moving frame (2), a rotating frame (31) being fixedly installed in the middle of the moving rod (3), a rubber ball (6) being rotatably arranged inside the rotating frame (31), a needle head (5) being inserted inside the rubber ball (6), sliding blocks (32) being fixedly connected at both ends of the moving rod (3), and a telescopic groove (34) being opened inside the moving rod (3); A telescopic rod (4), a sliding rod of the telescopic rod (4) is inserted into the interior of the telescopic groove (34), and a grinding block (43) is fixedly arranged on the surface of the telescopic rod (4).

2. The blood collection needle according to claim 1, characterized in that: The needle moving frame (2) is a "U"-shaped plate structure, and the sliding groove (21) is opened on both sides of the needle moving frame (2).

3. The blood collection needle according to claim 2, characterized in that: The tail of the needle (5) is connected to a blood collection tube (51).

4. The blood collection needle according to claim 3, characterized in that: The sliding block (32) is slidably arranged inside the sliding groove (21), a side groove (33) is provided on the surface of the sliding block (32), the side groove (33) is communicated with the telescopic groove (34), and a guide rod (36) is fixedly arranged on the surface of the sliding block (32).

5. The blood collection needle according to claim 4, characterized in that: A locking plate (35) is slidably mounted on the surface of the guide rod (36), and the locking plate (35) is slidably fitted with the surface of one end of the sliding block (32) away from the moving rod (3). One end of the guide rod (36) away from the sliding block (32) is fixedly connected to a limiting plate (38), and a compression spring (37) is arranged between the limiting plate (38) and the locking plate (35).

6. The blood collection needle according to claim 5, characterized in that: The telescopic groove (34) passes through the sliding block (32), and the telescopic groove (34) is connected to the interior of the rotating frame (31).

7. The blood collection needle according to claim 6, characterized in that: A pressing groove (41) is provided at one end of the telescopic rod (4) close to the rotating frame (31), and a locking groove (42) is provided on the surface of the telescopic rod (4).

8. The blood collection needle according to claim 7, characterized in that: The sanding block (43) is arranged inside the side groove (33), and the side of the sanding block (43) close to the sanding surface (22) is arranged parallel to the sanding surface (22).

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