Blood path hemostix and blood path connecting structure

Abstract

The utility model provides a blood path hemostix and a blood path connecting structure, and belongs to the technical field of medical instruments. Comprising a hemostix body, the hemostix body comprises a cavity, an opening is formed in the top of the cavity, a cap is in threaded connection with the upper portion of the opening in the top of the cavity, a sealing gasket is connected to the inner side of the opening in the top of the cavity in a sealed mode, a blood taking needle can penetrate through the sealing gasket, and a blood taking hole is formed in the top of the sealing gasket. The blood collector body is connected in a blood path structure, blood sample collection work is facilitated, the blood collector body is matched with the sealing gasket with the plurality of blood collection holes for blocking, so that blood collection can be performed by puncturing the blood collection holes without blood collection during repeated blood collection, a blood collection needle is prevented from puncturing the same position repeatedly, and the blood collection efficiency is improved. The problem that a sealing gasket is damaged or a gap is large and sealing cannot be achieved is solved, or solidified blood scab left in the previous time is pushed into a blood pipeline, and the pipeline is blocked is solved.

Description

Technical Field

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

[0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It involves draining blood from the body and passing it through a dialyzer composed of numerous hollow fibers. The blood exchanges substances with a solution containing electrolytes at similar concentrations to those in the body (dialysis fluid) through diffusion, ultrafiltration, adsorption, and convection within and outside the hollow fibers. This process removes metabolic waste products, maintains electrolyte and acid-base balance, and removes excess water. The purified blood is then returned to the body. The entire process is called hemodialysis.

[0003] Currently, it is recommended to check blood routine, kidney function, and blood electrolytes (including blood potassium, calcium, phosphorus, HCO3- or CO2CP, etc.) once a month. If any abnormalities are found, the dialysis prescription and medication should be adjusted promptly. Metabolic indicators such as blood glucose and blood lipids are recommended to be tested every 1-3 months if possible; and critically ill patients should have blood samples collected regularly to monitor changes in their condition, allowing physicians to adjust treatment plans in a timely manner and improve the patient's quality of life.

[0004] However, since blood samples need to be collected regularly over a long period of time, directly puncturing the patient's skin to collect blood can easily cause secondary infections. When collecting blood through a puncture needle in the blood circuit connection tube, repeated punctures at the same blood collection point can reduce the sealing of the tube, leading to blood clots in the blood and causing catheter blockage. Therefore, this application provides a blood circuit collection device and blood circuit connection structure to meet the needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a blood collection device and blood connection structure to solve the problem that when the existing puncture needle is used to collect blood in the blood connection tube, it is easy to reduce the sealing of the tube due to repeated punctures at the same blood collection point, which leads to the formation of blood clots in the tube and causes tube blockage.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A blood collection device includes a collection device body, the collection device body includes a cavity, the top of the cavity has an opening, a cap is threadedly connected above the opening at the top of the cavity, a sealing gasket is sealed inside the opening at the top of the cavity, the sealing gasket is designed to be penetrated by a blood collection needle, and a blood collection hole is provided at the top of the sealing gasket.

[0008] Preferably, the sealing gasket has a T-shaped cross-section.

[0009] Preferably, the sidewall of the sealing gasket is bonded and sealed to the inner sidewall of the opening at the top of the cavity.

[0010] Preferably, the sealing gasket is made of medical-grade rubber.

[0011] Preferably, the bottom of the blood collection port is solid and has several ports, which are arranged in a ring array on the top of the sealing gasket.

[0012] A blood circuit connection structure includes the aforementioned blood collection device, a central venous catheter, and a medical three-way valve.

[0013] Preferably, the blood collection device body is connected to a central venous catheter and a medical three-way valve via two connectors respectively.

[0014] Preferably, the connector includes a female buckle and a female buckle. The two female buckles are connected to the opposite side walls of the cavity by two catheters, and the two female buckles are connected to the output port of the central venous catheter and one of the interfaces of the medical three-way valve, respectively.

[0015] Preferably, the other two ports of the medical three-way valve are connected to a blood circuit tube and a branch tube, respectively.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects:

[0017] In the above solution, the blood collection device body is connected to the blood circuit structure to facilitate blood sample collection. It is also equipped with a sealing gasket with several blood collection holes for sealing. This allows blood to be collected by puncturing blood collection holes that have not been used before when multiple blood collections are performed. This avoids the problem of the blood collection needle puncturing the same position multiple times, which could cause the sealing gasket to break or the gap to be too large to seal, or push the coagulated blood residue from the previous time into the blood circuit, causing blockage. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0019] Figure 1 This is a schematic diagram of the blood passage connection structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the blood collection device of this utility model.

[0021] In the diagram: 1. Blood collection device body; 11. Cavity; 12. Cap; 13. Sealing gasket; 14. Blood collection port; 2. Connector; 21. Female buckle; 22. Female buckle; 3. Central venous catheter; 4. Medical three-way valve; 5. Blood circuit tube; 6. Branch tube.

[0022] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0023] The blood collection device and blood connection structure provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art can also use other alternative methods to implement them; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0024] like Figure 1 - Figure 2 As shown, an embodiment of this utility model provides a blood collection device, including a blood collection device body 1. The blood collection device body 1 includes a cavity 11. The top of the cavity 11 has an opening, which is a protruding annular pipe. The outer side wall of the opening has an external thread. A cap 12 is threadedly connected above the top opening of the cavity 11. The inner side wall of the cap 12 has an internal thread that matches the external thread. When the two are threadedly connected, they can seal the opening area and isolate external air. A sealing gasket 13 is sealed inside the top opening of the cavity 11. The sealing gasket 13 is designed to be penetrated by a blood collection needle. The top of the sealing gasket 13 has a blood collection hole 14.

[0025] By setting up the blood collection device body 1, when it is necessary to collect blood samples, the cap 12 is opened, the blood collection needle pierces the bottom wall of the blood collection hole 14 and passes through into the cavity 11 to collect blood samples. After the collection is completed, the needle is pulled out, and the top of the cavity 11 is sealed with the cap 12 to complete the air isolation.

[0026] like Figure 2 As shown, the sealing gasket 13 has a T-shaped cross-section; the side wall of the sealing gasket 13 is bonded and sealed to the inner side wall of the top opening of the cavity 11, and the bottom side protrusion of the sealing gasket 13 is in close contact with the inner top wall of the cavity 11 and is bonded and fixed, further enhancing the sealing effect of the sealing gasket 13 on the top opening of the cavity 11.

[0027] The sealing gasket 13 is made of medical-grade rubber.

[0028] This design facilitates needle insertion and prevents debris from entering the cavity 11 due to breakage of the sealing gasket 13 during needle insertion. After the needle is removed, the gap at the puncture site is automatically squeezed and closed by the elastic force of the medical rubber material, thus sealing the cavity 11.

[0029] like Figure 2 As shown, the bottom of the blood collection hole 14 is solid and has several holes, which are arranged in a ring array on the top of the sealing gasket 13.

[0030] By providing multiple blood collection ports 14, the blood collection needle punctures different ports 14 each time blood samples are collected. This avoids the blood collection needle bringing coagulated blood clots left in the puncture gap from the previous blood collection into the cavity 11 during the puncture process, which could then be introduced into the patient's body and cause vascular embolism. The presence of blood residue or puncture marks in the blood collection port 14 can be used to determine whether the port 14 has been punctured.

[0031] A blood circuit connection structure is also provided, including the aforementioned blood collection device, a central venous catheter 3, and a medical three-way valve 4.

[0032] The central venous catheter 3 is a dual-port catheter, used for plasma delivery and heparin injection respectively, and the medical three-way valve 4 is made of PICC material to ensure medical hygiene.

[0033] like Figure 1 As shown, the blood collection device body 1 is connected to the central venous catheter 3 and the medical three-way valve 4 respectively through two connectors 2; the connector 2 includes a female buckle 21 and a female buckle 22. The two opposite side walls of the cavity 11 are respectively connected to the two female buckles 21 through two catheters, and the two female buckles 22 are respectively connected to the output port of the central venous catheter 3 and to one of the interfaces of the medical three-way valve 4.

[0034] Connector 2 connects the various components in the pipeline, making disassembly and assembly convenient and easy for medical staff to connect the wires.

[0035] like Figure 2 As shown, the other two ports of the medical three-way valve 4 are connected to the blood circuit tube 5 and the branch tube 6, respectively.

[0036] The blood circuit tube 5, with its end furthest from the medical three-way valve 4, is punctured into the patient's body for blood transport. The branch tube 6, with its end furthest from the medical three-way valve 4, is connected to a citrate anticoagulant and works with a booster pump to pump the citrate anticoagulant into the blood circuit connection structure to prevent plasma coagulation.

[0037] Compared with the prior art, the technical solution provided by this utility model has at least the following beneficial effects: By providing a blood collection device body 1 connected in the blood circuit structure, it facilitates blood sample collection. With the help of a sealing gasket 13 with several blood collection holes 14 for sealing, blood can be collected by puncturing the blood collection holes 14 that have not been used for multiple blood collections. This avoids the problem of the sealing gasket 13 being damaged or having large gaps that cannot be sealed due to repeated punctures of the blood collection needle at the same location, or the problem of the previous solidified blood clots being pushed into the blood circuit, causing blockage of the circuit.

[0038] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A blood collection device, characterized in that, include: The blood collection device body (1) includes a cavity (11), the top of the cavity (11) is provided with an opening, a cap (12) is threadedly connected above the top opening of the cavity (11), a sealing gasket (13) is sealed and connected inside the top opening of the cavity (11), the sealing gasket (13) is designed to be penetrated by the blood collection needle, and a blood collection hole (14) is provided on the top of the sealing gasket (13).

2. The blood collection device according to claim 1, characterized in that, The sealing gasket (13) has a T-shaped cross section.

3. The blood collection device according to claim 1, characterized in that, The sidewall of the sealing gasket (13) is bonded and sealed to the inner sidewall of the top opening of the cavity (11).

4. The blood collection device according to claim 1, characterized in that, The sealing gasket (13) is made of medical-grade rubber.

5. The blood collection device according to claim 1, characterized in that, The bottom of the blood collection hole (14) is solid and there are several of them. The several blood collection holes (14) are arranged in a ring array on the top of the sealing gasket (13).

6. A blood circuit connection structure, characterized in that, Includes the blood collection device described in any one of claims 1-5, as well as the central venous catheter (3) and the medical three-way valve (4).

7. The blood circuit connection structure according to claim 6, characterized in that, The blood collection device body (1) is connected to the central venous catheter (3) and the medical three-way valve (4) respectively through two connectors (2).

8. The blood circuit connection structure according to claim 7, characterized in that, The connector (2) includes a female buckle (21) and a female buckle (22). The two opposite side walls of the cavity (11) are respectively connected to the two female buckles (21) through two conduits. The two female buckles (22) are respectively connected to the output port of the central venous catheter (3) and to one of the interfaces of the medical three-way valve (4).

9. The blood circuit connection structure according to claim 8, characterized in that, The other two ports of the medical three-way valve (4) are connected to the blood circuit tube (5) and the branch tube (6), respectively.

Images