Blood collector with detachable needle head

Abstract

The utility model relates to the field of medical equipment, in particular to a blood collector with a detachable needle head. A head cover is slidably connected to one end of the tube body, a mounting disc is slidably connected to the inner wall of the tube body, a needle head is detachably connected to the inner wall of the mounting disc, a rubber plug is slidably connected to the inner wall of the tube body, and a push rod is fixedly connected to one end of the rubber plug. When blood is extracted through the device, after blood extraction is completed through the device, the needle is pulled out through the protruding part disassembling mechanism, meanwhile, the push rod is broken through the protruding part disassembling mechanism, the whole tube body forms a storage container at the moment, a blood collection bottle does not need to be additionally used, and the device is simple in structure and convenient to use. And waste is reduced more conveniently.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a blood sampling device with a detachable needle. Background Art

[0002] Blood collection devices are mainly used to collect and store arterial blood samples for in vitro diagnostic tests.

[0003] After searching, a Chinese patent disclosed an arterial blood collector with an internal needle (publication number CN 207627330U). The patent technology is reasonably designed, and the needle is hidden inside the syringe, so there will be no accidental injury. It is easy to operate, safe and hygienic. However, in the technical solution of the above patent document, the needle is set inside and cannot be replaced with a thin needle for infants and young children. At the same time, the blood after extraction needs to be pushed into the blood collection bottle container for testing, which is more troublesome and is also more wasteful as they are all disposable items.

[0004] Therefore, a blood collection device with a detachable needle is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a blood collection device with a detachable needle in order to solve the above-mentioned problem, thereby improving the problem that the needle is set inside and cannot be replaced for use with thin needles for infants and young children, and the blood after being drawn needs to be pushed into a blood collection bottle container for testing, which is rather troublesome and the needles are disposable and wasteful.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions. A blood collector with a detachable needle comprises: a tube body, a head cover is slidably connected to one end of the tube body, a mounting plate is slidably connected to the inner wall of the tube body, a needle is detachably connected to the inner wall of the mounting plate, a rubber plug is slidably connected to the inner wall of the tube body, and a push rod is fixedly connected to one end of the rubber plug; a top disassembly mechanism, which is used for quickly disassembling the head cover and replacing the needle, and is arranged on one side of the tube body; a protrusion disassembly mechanism, which is used for removing the needle and the push rod after extraction, and is arranged on the inner side of the tube body.

[0007] Preferably, the top disassembly mechanism includes a snap-in hole opened on the circumferential surface of the head cover, the circumferential surface of the tube body is fixedly connected with a hinge frame, the inner wall of the hinge frame is fixedly connected with a rotating shaft, the circumferential surface of the rotating shaft is fixedly connected with a hinge seat, the side end of the hinge seat is fixedly connected with a torsion spring, the side end of the torsion spring is fixedly connected with a snap-in plate, the snap-in plate is movably snap-connected with the inner wall of the snap-in hole, the head cover can be disassembled through the top disassembly mechanism, and the internal mounting plate and needle can be removed and pulled out for replacement.

[0008] Preferably, a torsion spring is fixedly connected to the side end of the articulated frame, one end of the torsion spring is fixedly connected to the articulated seat, and the torsion spring is sleeved on the circumferential surface of the rotating shaft. The torsion spring can stably push and clamp the clamping plate to prevent it from loosening.

[0009] Preferably, an orientation block is fixedly connected to the circumferential surface of the tube body, an orientation groove is opened at the lower end of the head cover, and the orientation block is slidably connected to the inner wall of the orientation groove. The installation direction of the head cover can be positioned by the orientation block and the orientation groove, so that the top disassembly mechanism can be accurately installed and fixed.

[0010] Preferably, the protrusion disassembly mechanism includes a mounting hole opened at the upper end of the mounting plate, a rubber ring is fixedly connected to the surface of the needle, the rubber ring is interference fit with the inner wall of the mounting hole, and the needle can be disassembled through the rubber ring and the mounting hole.

[0011] Preferably, a quick-break groove is provided at the upper end of the push rod, and a gripping friction ring is fixedly connected to the circumferential surface of the tube body. The push rod can be broken through the quick-break groove. At this time, the tube body as a whole forms a storage container, and there is no need to input blood into the container for storage.

[0012] Preferably, the lower end of the tube body is fixedly connected to a limiting plate, and the push rod is slidably matched with the inner wall of the limiting plate. The sliding of the push rod can be limited by the limiting plate to prevent the push rod from tilting when sliding.

[0013] The beneficial effects of the utility model are:

[0014] 1. The head cover can be removed through the top disassembly mechanism, and the needle and the mounting plate can be removed, replaced and reinstalled. When blood is drawn through the device, after the blood is drawn through the device, the needle is pulled out through the protruding part disassembly mechanism, and the push rod is broken through the protruding part disassembly mechanism. At this time, the tube body forms a storage container as a whole, and there is no need to use an additional blood collection bottle, which reduces waste and is more convenient;

[0015] 2. The push rod can be broken off through the quick-break groove. At this time, the tube body as a whole forms a storage container, and there is no need to input blood into the container for storage. At the same time, by grasping the friction ring, blood can be drawn without slipping, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main perspective view of the utility model;

[0017] Figure 2 It is a cutaway stereogram of the utility model;

[0018] Figure 3 For the utility model Figure 2 A magnified view of middle;

[0019] Figure 4 For the utility model Figure 2 Enlarged view of B.

[0020] In the figure: 1. tube body; 2. head cover; 3. mounting plate; 4. needle; 5. rubber plug; 6. push rod; 7. top disassembly mechanism; 701. hinge frame; 702. hinge seat; 703. rotating shaft; 704. torsion spring; 705. clamping plate; 706. clamping hole; 707. orientation block; 708. orientation groove; 8. protrusion disassembly mechanism; 801. rubber ring; 802. mounting hole; 803. limit plate; 804. quick-break groove; 805. gripping friction ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] When implementing: Figure 1-4 As shown, a blood collector with a detachable needle comprises: a tube body 1, a head cover 2 is slidably connected to one end of the tube body 1, a mounting plate 3 is slidably connected to the inner wall of the tube body 1, a needle 4 is detachably connected to the inner wall of the mounting plate 3, a rubber plug 5 is slidably connected to the inner wall of the tube body 1, and a push rod 6 is fixedly connected to one end of the rubber plug 5; a top disassembly mechanism 7, which is used for quickly disassembling the head cover 2 and replacing the needle 4. The top disassembly mechanism 7 is arranged on one side of the tube body 1; a protrusion disassembly mechanism 8, which is used for disassembling the needle 4 and the push rod 6 after extraction. The protrusion disassembly mechanism 8 is arranged on the inner side of the tube body 1. When the needle 4 needs to be disassembled, the head cover 2 can be removed through the top disassembly mechanism 7. At this time, the needle 4 and the mounting plate 3 can be removed and replaced, and then the top disassembly mechanism 7 can be used to remove the needle 4 and the mounting plate 3. The head cover 2 is reinstalled. When blood is drawn through the device at this time, the push rod 6 is pushed to squeeze the needle 4 out, and the needle 4 is inserted into the blood vessel. The push rod 6 is pulled back, and the rubber stopper 5 is pulled back to draw blood. When the drawing is completed, the needle 4 is pulled out through the protrusion disassembly mechanism 8, and the push rod 6 is broken by the protrusion disassembly mechanism 8. At this time, the tube body 1 forms a storage container as a whole, and there is no need to use an additional blood collection bottle, which reduces waste and is more convenient. The outlet of the head cover 2 has a "cross" shaped pre-groove. When the needle 4 is pushed out and disassembled, a "cross" shaped opening will be formed. After the needle 4 is wiped off, it can be restored to a shield by elastic force to reduce the entry of dust and impurities. The opening shape and sealing method of the head cover 2 are the same technology as the head cover 2 for blood collection tubes in the prior art, and will not be elaborated here.

[0023] like Figure 1 and Figure 3 As shown, the top disassembly mechanism 7 includes a snap-in hole 706 opened on the circumferential surface of the head cover 2, a hinge frame 701 is fixedly connected to the circumferential surface of the tube body 1, a rotating shaft 703 is fixedly connected to the inner wall of the hinge frame 701, a hinge seat 702 is fixedly connected to the circumferential surface of the rotating shaft 703, a torsion spring 704 is fixedly connected to the side end of the hinge seat 702, a snap-in plate 705 is fixedly connected to the side end of the torsion spring 704, and the snap-in plate 705 is movably snap-into the inner wall of the snap-in hole 706. When the head cover 2 needs to be disassembled, the raised part of the surface of the snap-in plate 705 can be squeezed. At this time, the snap-in plate 705 rotates with the rotating shaft 703 as the center, and the snap-in plate 705 is separated from the snap-in hole 706. At this time, the head cover 2 can be pushed up to detach, and the internal mounting plate 3 and needle 4 can be replaced. It is also convenient to drip anticoagulants, coagulants and other drugs in special detection items, which is convenient for various detection tests. The clamping plate 705 can be unlocked by pressing the thumb, and the head cover 2 can be pushed out by the index finger to realize one-handed disassembly, which is more convenient. The side end of the hinge frame 701 is fixedly connected with a torsion spring 704, and one end of the torsion spring 704 is fixedly connected to the hinge seat 702. The torsion spring 704 is sleeved on the circumferential surface of the rotating shaft 703, and the clamping plate 705 can be pushed by the torsion spring 704 to stably clamp the clamping hole 706. The circumferential surface of the tube body 1 is fixedly connected with an orientation block 707, and the lower end of the head cover 2 is provided with an orientation groove 708, and the orientation block 707 is slidably connected to the inner wall of the orientation groove 708. Because the tube body 1 and the head cover 2 are both circular and easy to rotate, it is difficult to accurately clamp the clamping plate 705 and the clamping hole 706. The orientation block 707 and the orientation groove 708 can be used to position the installation direction, so that the clamping plate 705 and the clamping hole 706 are stably clamped.

[0024] like Figure 2 and Figure 4 As shown, the protrusion disassembly mechanism 8 includes a mounting hole 802 opened at the upper end of the mounting disk 3, a rubber ring 801 is fixedly connected to the surface of the needle 4, the rubber ring 801 is interference fit with the inner wall of the mounting hole 802, the rubber ring 801 has a circular raised ring, and the needle 4 can be quickly installed and disassembled through the mounting hole 802 and the rubber ring 801. When the blood is drawn, the needle 4 can be disassembled by pulling out the needle 4 with tweezers. A quick-breaking groove 804 is opened at the upper end of the push rod 6, and a gripping friction ring 805 is fixedly connected to the circumferential surface of the tube body 1. After the blood is drawn, the push rod 6 can be broken through the quick-breaking groove 804. At this time, the blood is stored in the tube body 1, and there is no need to use an additional blood collection tube. The lower end of the tube body 1 is fixedly connected to a limiting disk 803, the push rod 6 is slidably matched with the inner wall of the limiting disk 803, and the sliding of the push rod 6 can be limited by the limiting disk 803 to prevent the push rod 6 from tilting when sliding.

[0025] When the utility model is in use, when it is necessary to disassemble the needle 4, the raised part of the surface of the clamping plate 705 is squeezed. At this time, the clamping plate 705 rotates with the rotating shaft 703 as the center, compressing the torsion spring 704, and the clamping plate 705 is separated from the clamping hole 706. At this time, the head cover 2 can be pushed up to disengage, and the internal mounting plate 3 and the needle 4 can be replaced. When the replacement is completed, the head cover 2 is inserted back, the clamping plate 705 is loosened, and the torsion spring 704 pushes the clamping plate 705 back to clamp and fix it with the clamping hole 706. At this time, the push rod 6 is pushed to squeeze the needle 4 out, and the needle 4 is inserted into the blood vessel. The push rod 6 is pulled back, and the rubber plug 5 is pulled back to extract blood. When the blood extraction is completed, the needle 4 can be disassembled by pulling out the needle 4 with tweezers, and the push rod 6 can be broken at the same time. At this time, the blood is stored in the tube body 1, and there is no need to use an additional blood collection tube.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blood collection device with a detachable needle, characterized in that: include: A tube body (1), one end of the tube body (1) is slidably connected to a head cover (2), the inner wall of the tube body (1) is slidably connected to a mounting plate (3), the inner wall of the mounting plate (3) is detachably connected to a needle (4), the inner wall of the tube body (1) is slidably connected to a rubber plug (5), and one end of the rubber plug (5) is fixedly connected to a push rod (6); A top disassembly mechanism (7) for quickly disassembling the head cover (2) to replace the needle (4), the top disassembly mechanism (7) being arranged on one side of the tube body (1); A protrusion disassembly mechanism (8) is used to disassemble the needle (4) and the push rod (6) after extraction. The protrusion disassembly mechanism (8) is arranged on the inner side of the tube body (1).

2. A blood collection device with a detachable needle according to claim 1, characterized in that: The top disassembly mechanism (7) comprises a snap-in hole (706) opened on the circumferential surface of the head cover (2); the circumferential surface of the tube body (1) is fixedly connected to a hinge frame (701); the inner wall of the hinge frame (701) is fixedly connected to a rotating shaft (703); the circumferential surface of the rotating shaft (703) is fixedly connected to a hinge seat (702); the side end of the hinge seat (702) is fixedly connected to a torsion spring (704); the side end of the torsion spring (704) is fixedly connected to a snap-in plate (705); the snap-in plate (705) is movably snap-in connected to the inner wall of the snap-in hole (706).

3. A blood sampling device with a detachable needle according to claim 2, characterized in that: A torsion spring (704) is fixedly connected to the side end of the hinge frame (701), one end of the torsion spring (704) is fixedly connected to the hinge seat (702), and the torsion spring (704) is sleeved on the circumferential surface of the rotating shaft (703).

4. A blood sampling device with a detachable needle according to claim 2, characterized in that: An orientation block (707) is fixedly connected to the circumferential surface of the tube body (1), an orientation groove (708) is provided at the lower end of the head cover (2), and the orientation block (707) is slidably connected to the inner wall of the orientation groove (708).

5. The blood collection device with a detachable needle according to claim 1, characterized in that: The protrusion disassembly mechanism (8) comprises a mounting hole (802) opened at the upper end of the mounting plate (3), a rubber ring (801) is fixedly connected to the surface of the needle head (4), and the rubber ring (801) is interference fit with the inner wall of the mounting hole (802).

6. The blood collection device with a detachable needle according to claim 1, characterized in that: A quick-breaking groove (804) is provided at the upper end of the push rod (6), and a gripping friction ring (805) is fixedly connected to the circumferential surface of the tube body (1).

7. The blood collection device with a detachable needle according to claim 1, characterized in that: The lower end of the tube body (1) is fixedly connected to a limit plate (803), and the push rod (6) is slidably engaged with the inner wall of the limit plate (803).

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