Storage tube for blood sampling in department of hematology

Abstract

A storage tube for blood sampling in the department of hematology relates to the technical field of medical instruments and comprises a transparent storage tube, scales are evenly arranged on the side face of the storage tube, a capacity adjusting mechanism is installed on the inner side of the storage tube, and a connecting seat is connected to the position of a through hole in the bottom of the storage tube through a connecting mechanism. A plunger hole is formed in the middle of the connecting base, a sealing film is arranged at the bottom end of the plunger hole, a plunger is connected to a through hole in the bottom of the storage tube through a connecting block, and the plunger is connected with the plunger hole in a matched and inserted mode. By means of the blood sampling device, the blood sampling cost is reduced, sealing in the storage pipe can be guaranteed while the collision needle head is pulled out, blood is prevented from being polluted by external air, and the accuracy of follow-up blood detection results is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a blood collection storage tube for hematology. Background Technology

[0002] The Department of Hematology mainly diagnoses and treats diseases of the hematopoietic system and blood system, such as anemia, white blood cell-related diseases, hemorrhagic diseases, and malignant tumors of the hematopoietic system. Patients may have changes in bone marrow, red blood cells, platelets, and coagulation factors, so blood is frequently drawn. The collected blood is transported into storage tubes, and then the storage tubes are transported to the testing center.

[0003] In the prior art, patent CN 221750483 U discloses a blood collection device for hematology. The outer cover is rotated to expose the plug hole, and a needle is inserted into the blood storage tube after piercing the sealing membrane. The other end of the needle is pulled out from the protective cover. The user holds the handle to collect blood from a patient's vein. The blood moves along the main tube to the blood storage tube, expelling air from the main tube through a first branch and an air valve, and then flows into the blood storage tube through a second branch. When the blood level reaches the liquid level gauge, the gauge sends an electrical signal to the valve, closing it to complete the blood collection. The needle is then removed, and the outer cover is rotated to lock the plug in the plug hole, sealing the blood. This device uses a liquid level gauge to measure the blood volume, but the storage tube is a consumable, increasing the price of the liquid level gauge and thus raising the cost of blood collection. Furthermore, the plug hole is open when the needle is removed, posing a risk of contamination from external air, which could adversely affect subsequent blood test results. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a blood collection storage tube for hematology. The blood volume in the storage tube is easy to adjust, avoiding the increased cost of using a level gauge, thereby reducing the cost of blood collection. It can keep the storage tube sealed when the needle is pulled out, thereby preventing the blood from being contaminated by the outside air and ensuring the accuracy of subsequent blood test results. It can effectively solve the problems in the background art.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] A blood collection storage tube for hematology includes a transparent storage tube with evenly spaced graduations on its side. A volume adjustment mechanism is installed on the inner side of the storage tube. A connecting seat is connected to the bottom through-hole of the storage tube via a connecting mechanism. A plunger hole is provided in the middle of the connecting seat, and a sealing membrane is provided at the bottom end of the plunger hole. A plunger is connected to the bottom through-hole of the storage tube via a connecting block, and the plunger is inserted into the plunger hole.

[0007] Furthermore, the capacity adjustment mechanism includes a screw and a piston. The piston is movably connected to the inner side of the storage tube, the screw is threadedly connected to the storage tube, and the bottom end of the screw is rotatably connected to the top of the piston.

[0008] Furthermore, the capacity adjustment mechanism also includes a bearing, and the bottom end of the screw is rotatably connected to the piston via the bearing.

[0009] Furthermore, the capacity adjustment mechanism also includes a knob, which is fixed to the top of the screw.

[0010] Furthermore, the connecting mechanism includes a threaded male connector, a rotary connector, and a threaded female connector. The threaded female connector is rotatably connected to the connecting seat through the rotary connector. The threaded male connector is fixed on the storage tube. The threaded male connector is hollow inside, and its hollow part is connected to the bottom through hole of the storage tube. The plunger is located in the hollow part inside the threaded male connector. A gap is maintained between the plunger and the inner wall of the threaded male connector. The threaded male connector and the threaded female connector are threadedly connected.

[0011] Furthermore, the connection mechanism also includes a handle, which is fixed to the side of the threaded female connector.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This blood collection storage tube for hematology has the following advantages:

[0013] 1. The blood collection volume in the storage tube is precisely adjusted through a volume adjustment mechanism. This makes adjusting the blood collection volume in the storage tube convenient and avoids the increased cost of using a level gauge, thereby reducing the cost of blood collection.

[0014] 2. The plunger is inserted into the plunger hole through the connecting mechanism. At this time, the storage tube is in a sealed state. It can ensure the seal inside the storage tube when the needle is pulled out, thereby avoiding the blood from being contaminated by the outside air and ensuring the accuracy of subsequent blood test results. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0018] Figure 4 This is a partial structural diagram of the capacity adjustment mechanism of this utility model.

[0019] In the diagram: 1-Storage tube, 2-Scale, 3-Capacity adjustment mechanism, 31-Knob, 32-Screw, 33-Bearing, 34-Piston, 4-Connecting mechanism, 41-Threaded male connector, 42-Handle, 43-Rotary joint, 44-Threaded female connector, 5-Connecting seat, 6-Sealing membrane, 7-Connecting block, 8-Plunger hole, 9-Plunger. Detailed Implementation

[0020] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0021] Please see Figure 1-4 This embodiment provides a technical solution: a blood collection storage tube for hematology, including a storage tube 1, which is a transparent tube. The side of the storage tube 1 is evenly marked with graduations 2. A capacity adjustment mechanism 3 is installed on the inner side of the storage tube 1. A connecting seat 5 is connected to the bottom through hole of the storage tube 1 through a connecting mechanism 4. A plunger hole 8 is opened in the middle of the connecting seat 5. A sealing membrane 6 is provided at the bottom end of the plunger hole 8. A plunger 9 is connected to the bottom through hole of the storage tube 1 through a connecting block 7, and the plunger 9 is inserted into the plunger hole 8.

[0022] The capacity adjustment mechanism 3 includes a screw 32 and a piston 34. The piston 34 is vertically connected to the inner side of the storage tube 1. The screw 32 is threadedly connected to the storage tube 1, and the bottom end of the screw 32 is rotatably connected to the top of the piston 34. The capacity adjustment mechanism 3 also includes a bearing 33, through which the bottom end of the screw 32 is rotatably connected to the piston 34. The capacity adjustment mechanism 3 also includes a knob 31, which is fixed to the top of the screw 32. Rotating the knob 31 causes the screw 32 to rotate. The screw 32 is threadedly connected to the storage tube 1. The screw 32 is connected to the piston 34 via a bearing 33. The screw 32 drives the piston 34 to move within the storage tube 1, thereby adjusting the capacity of the storage tube 1. The piston 34 corresponds to different scales 2 on the storage tube 1, thus precisely adjusting the blood collection volume within the storage tube 1. The storage tube 1 is a transparent tube, making it easy to observe the position of the piston 34. This convenient adjustment of the blood collection volume within the storage tube 1 avoids the increased cost of using a level gauge, thereby reducing the cost of blood collection.

[0023] The connecting mechanism 4 includes a threaded male connector 41, a rotary connector 43, and a threaded female connector 44. The threaded female connector 44 is rotatably connected to the connecting seat 5 via the rotary connector 43. The threaded male connector 41 is fixed to the storage tube 1. The threaded male connector 41 is hollow inside, and its hollow part communicates with the bottom through hole of the storage tube 1. The plunger 9 is located in the hollow part of the threaded male connector 41. A gap is maintained between the plunger 9 and the inner wall of the threaded male connector 41. The threaded male connector 41 and the threaded female connector 44 are threadedly connected. The connecting mechanism 4 also includes a handle 42, which is fixed to the side of the threaded female connector 44. The sealing membrane 6 is pierced by the impact needle, and the extracted blood enters the gap between the plunger 9 and the threaded male connector 41 through the plunger hole 8. Afterwards, blood enters the storage tube 1 through the gap between the connecting block 7 and the bottom through hole of the storage tube 1. After blood collection is completed, turn the handle 42. The handle 42 drives the threaded female connector 44 to rotate. The threaded female connector 44 is threadedly connected to the threaded male connector 41 until the plunger 9 is inserted into the plunger hole 8. At this time, the storage tube 1 is in a sealed state. Then the needle head can be pulled out. When the threaded female connector 44 is rotated, it rotates relative to the connecting seat 5 through the rotary connector 43. This design ensures that the needle head on the sealing membrane 6 will not deflect to a large extent. It can ensure the seal inside the storage tube 1 while pulling out the needle head, thereby avoiding the blood from being contaminated by external air and ensuring the accuracy of subsequent blood test results.

[0024] The working principle of the blood collection storage tube provided by this utility model is as follows: Rotating the knob 31 drives the screw 32 to rotate. The screw 32 is threadedly connected to the storage tube 1. The end of the screw 32 rotates relative to the piston 34 through the bearing 33. The end of the screw 32 drives the piston 34 to move inside the storage tube 1, thereby adjusting the capacity of the storage tube 1. The piston 34 corresponds to different scales 2 on the storage tube 1, thereby precisely adjusting the blood collection capacity in the storage tube 1. The storage tube 1 is a transparent tube, which makes it easy to observe the position of the piston 34.

[0025] The blood is drawn by piercing the sealing membrane 6 with the plunger tip and entering the gap between the plunger 9 and the threaded male connector 41 through the plunger hole 8. Then, the blood enters the storage tube 1 through the gap between the connecting block 7 and the bottom through hole of the storage tube 1. After blood collection is completed, the handle 42 is turned, which drives the threaded female connector 44 to rotate. The threaded female connector 44 is threadedly connected to the threaded male connector 41 until the plunger 9 is inserted into the plunger hole 8. At this time, the storage tube 1 is in a sealed state. Then the plunger tip can be pulled out. When the threaded female connector 44 is rotated, it rotates relative to the connecting seat 5 through the rotary connector 43. This design ensures that the plunger tip on the sealing membrane 6 will not deflect to a large extent.

[0026] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. The sealing membrane 6 can be the sealing membrane in the patent authorized announcement number CN 221750483 U.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0028] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A blood collection storage tube for hematology, comprising a storage tube (1), characterized in that: The storage tube (1) is a transparent tube with evenly spaced graduations (2) on its side. A capacity adjustment mechanism (3) is installed on the inner side of the storage tube (1). A connecting seat (5) is connected to the bottom through hole of the storage tube (1) via a connecting mechanism (4). A plunger hole (8) is provided in the middle of the connecting seat (5). A sealing membrane (6) is provided at the bottom end of the plunger hole (8). A plunger (9) is connected to the bottom through hole of the storage tube (1) via a connecting block (7), and the plunger (9) is inserted into the plunger hole (8).

2. The blood collection storage tube for hematology as described in claim 1, characterized in that: The capacity adjustment mechanism (3) includes a screw (32) and a piston (34). The piston (34) is movably connected to the inside of the storage tube (1). The screw (32) is threadedly connected to the storage tube (1). The bottom end of the screw (32) is rotatably connected to the top of the piston (34).

3. A blood collection storage tube for hematology as described in claim 2, characterized in that: The capacity adjustment mechanism (3) also includes a bearing (33), and the bottom end of the screw (32) is rotatably connected to the piston (34) through the bearing (33).

4. A blood collection storage tube for hematology according to claim 2, characterized in that: The capacity adjustment mechanism (3) also includes a knob (31) which is fixed to the top of the screw (32).

5. A blood collection storage tube for hematology according to claim 1, characterized in that: The connecting mechanism (4) includes a threaded male connector (41), a rotary connector (43), and a threaded female connector (44). The threaded female connector (44) is rotatably connected to the connecting seat (5) through the rotary connector (43). The threaded male connector (41) is fixed on the storage tube (1). The threaded male connector (41) is hollow inside and its hollow part is connected to the bottom through hole of the storage tube (1). The plunger (9) is set in the hollow part inside the threaded male connector (41). A gap is maintained between the plunger (9) and the inner wall of the threaded male connector (41). The threaded male connector (41) and the threaded female connector (44) are threadedly connected.

6. A blood collection storage tube for hematology as described in claim 5, characterized in that: The connecting mechanism (4) also includes a handle (42), which is fixed to the side of the threaded female connector (44).

Images