Novel blood sampling type indwelling needle
By designing a new type of blood-drawing indwelling needle, including blood-drawing parts, extension tubes, infusion connectors and blood-drawing parts, and setting a guide mechanism in the blood-drawing parts, the problems of unstable needle withdrawal and needle discarding in the existing technology are solved, and the problem of needle discarding is achieved. It has the effect of reducing the number of punctures, reducing pain and reducing the risk of being stabbed.
Patent Information
- Application Number
- CN202423137221.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The existing blood-collection needles are difficult to draw the needle stably after puncture, which increases the pain of the child, and the extracted needles are easily discarded, resulting in stabbing by the cleaning staff.
A new type of blood collection needle is designed, including blood drawing parts, extended pipes, infusion joints, and blood collection components. There is a positive mechanism in the blood drawing component to ensure the stability of the blood drawing needle. The blood collection needle is broken to avoid discarding the needle.
The number of punctures is reduced, the children's pain is reduced, the stability of the needle pumping is ensured, and the stabbing is reduced.
Smart Images
Figure CN222383916U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a novel blood sampling type retention needle. Background Art
[0002] In clinical practice, some children need infusion after blood collection. Since disposable blood collection needles will be discarded after use, medical staff will re-puncture the skin of the child when infusion is needed. However, the child often does not cooperate, cries, and struggles, so that blood collection cannot be completed in one go. Therefore, the child will experience two or more punctures, which increases the pain of the child. The existing blood collection retention needle directly pushes out the entire needle after the puncture is completed. However, the needle is prone to tilt during the needle withdrawal process, causing the retention needle to be scratched or picked out, thereby affecting the blood collection of the child. In addition, the extracted needle is generally discarded, and cleaning staff are easily stabbed by the needle when cleaning up garbage. Utility Model Content
[0003] The technical problem to be solved by the embodiment of the utility model is to provide a new type of blood collection retention needle, which reduces the number of puncture times, alleviates the pain of the child, makes the needle withdrawal more stable, and reduces the possibility of being stabbed.
[0004] To achieve the above-mentioned purpose, the utility model discloses a novel blood sampling type retention needle, comprising a blood drawing component, an extension tube, an infusion connector, and a blood sampling component. The head and tail ends of the extension tube are respectively connected to the blood drawing component and the infusion connector, and the blood sampling component is inserted into the infusion connector;
[0005] The blood drawing component includes a blood drawing connector, a catheter, and a blood drawing needle. The blood drawing connector has a blood drawing cavity and an open cavity. The blood drawing cavity is communicated with the catheter. The blood drawing needle is slidably inserted in the open cavity and the blood drawing cavity and is inserted into the catheter. The extension tube is communicated with the blood drawing cavity.
[0006] The end of the blood drawing needle is provided with a guiding mechanism, the end of the blood drawing connector has an open cavity, and the guiding mechanism cooperates with the open cavity for guiding;
[0007] An infusion cavity is provided in the infusion connector, and the infusion cavity is communicated with the extension tube. A connector is provided on the infusion connector for connecting with an infusion bottle or the blood sampling component. A valve core is slidably provided between the connector and the infusion cavity for controlling the connection and disconnection between the connector and the infusion cavity.
[0008] Furthermore, the guiding mechanism includes a guiding end cover, which is arranged at the opening of the open cavity, and a plurality of guiding strips are equidistantly arranged on the bottom surface of the guiding end cover along the circumferential direction, and a slider is fixedly arranged at the end of the blood drawing needle, and the slider is slidably matched with the open cavity, and a plurality of guiding holes slidably matched with the guiding strips are equidistantly arranged on the slider along the circumferential direction.
[0009] Furthermore, a needle holding handle is provided on one side of the sliding block, and a sliding groove is provided on the side wall of the blood drawing connector, and the needle holding handle is slidably matched with the sliding groove.
[0010] Furthermore, a valve core cavity is provided in the infusion connector, one end of the valve core cavity has a first valve port connected to the infusion cavity, the other end of the valve core cavity has a second valve port connected to the connector, and the upper and lower ends of the valve core are slidably matched with the first valve port and the second valve port respectively.
[0011] Furthermore, a liquid conducting channel communicating with the top surface is arranged in the valve core, and a plurality of liquid conducting ports communicating with the liquid conducting channel are arranged along the circumferential direction on the lower outer wall of the valve core.
[0012] Furthermore, a middle outer wall of the valve core has a limiting flange, and an elastic component is arranged between the limiting flange and the valve core cavity.
[0013] Furthermore, the top surface of the valve core is in a cone shape.
[0014] Furthermore, the blood collection component includes a blood collection needle and a blood collection connector, and the blood collection needle is fixedly arranged on the blood collection connector so that the blood collection needle can be inserted into the connecting head through the blood collection connector to make the blood collection needle communicate with the infusion cavity.
[0015] Furthermore, a plurality of elastic expansion sheets are equidistantly arranged on the outer wall of the blood sampling connector along the circumferential direction, so that the blood sampling connector can be clamped in the connector under the elastic action of the elastic expansion sheets.
[0016] Furthermore, an isolation plug is arranged in the head end of the open cavity, and a through hole is provided in the center of the isolation plug for the blood drawing needle to pass through.
[0017] Compared with the prior art, the beneficial effects of the present invention are:
[0018] (1) The retention needle of the utility model can be used for blood collection and infusion operations, reducing the number of punctures, which not only relieves the pain of the child, but also saves time, and is convenient and quick. (2) In the utility model, a guiding mechanism is provided in the blood drawing connector to ensure the stability of the blood drawing needle when it is drawn out, thereby avoiding causing harm to the child or scratching the catheter. (3) The guiding end cap and the slider can be snapped together, so that the blood drawing needle is fixed on the guiding end cap after being drawn out of the catheter, avoiding the discarded blood drawing needle from stabbing the cleaning staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the overall structure of the blood drawing component;
[0021] Figure 3 To show Figure 1 Schematic diagram of the structure of part A in FIG.
[0022] Figure 4 To show Figure 2 Schematic diagram of the structure of part B;
[0023] Figure 5 It is a schematic diagram of the overall structure of the blood collection component. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.
[0025] Reference Figure 1 As shown, a new type of blood collection retention needle includes a blood drawing component 1, an extension tube 2, an infusion connector 3, and a blood collection component 4. The head and tail ends of the extension tube 2 are respectively connected to the blood drawing component 1 and the infusion connector 3, and the blood collection component 4 is inserted into the infusion connector 3.
[0026] Combination Figure 4As shown, an infusion cavity 31 is provided in the infusion connector 3, and the infusion cavity 31 is communicated with the extension tube 2. A connector 32 is provided on the infusion connector 3, and a socket is provided in the connector 32 for the blood sampling component 4 to be inserted into the socket of the connector 32. A valve core 33 is slidably provided between the connector 32 and the infusion cavity 31. A valve core cavity 34 is provided in the infusion connector, and one end of the valve core cavity 34 has a first valve port communicated with the infusion cavity 31, and the other end of the valve core cavity 34 has a second valve port communicated with the socket of the connector 32. The upper and lower parts of the valve core 33 are slidably matched with the first valve port and the second valve port respectively, and the middle outer wall of the valve core 33 has a limiting flange 333, and an elastic component is provided between the limiting flange 333 and the valve core cavity 34. In this embodiment, the elastic component is preferably a spring, so that the valve core 33 can slide in the valve core cavity 34 under the elastic action of the elastic component, so as to control the connection and disconnection of the connector 32 and the infusion cavity 31.
[0027] Reference Figure 4 , Figure 5 As shown, further, the blood collection component 4 includes a blood collection needle 41 and a blood collection connector 42. The blood collection needle 41 is fixedly arranged on the blood collection connector 42. The blood collection needle 41 is inserted into the socket of the connector 32 through the blood collection connector 42. In this embodiment, the outer wall of the blood collection connector 42 is provided with a plurality of elastic expansion sheets 421 equidistantly along the circumferential direction, so that the blood collection connector 42 can be clamped in the socket of the connector 32 under the elastic action of the elastic expansion sheets 421, thereby realizing quick connection and convenient disassembly of the blood collection needle and the infusion connector.
[0028] In addition, a rubber protective cover 43 is provided on the blood collection needle 41, and a transparent needle cover 44 is provided on the outside of the rubber protective cover 43. The rubber protective cover 43 and the transparent needle cover 44 can prevent the blood collection needle 41 from being exposed to the outside, which can not only prevent the blood collection needle from being contaminated, but also prevent medical staff from being stabbed.
[0029] Furthermore, a liquid conducting channel 331 communicating with the top surface is provided in the valve core 33, and a plurality of liquid conducting ports 332 communicating with the liquid conducting channel 331 are provided along the circumferential direction on the lower outer wall of the valve core 33. In the initial state, the upper end of the valve core 33 extends into the jack of the connector 32 under the elastic action of the elastic component, while the lower end of the valve core 33 retracts into the second valve port, and the lower end of the valve core 33 has a sealing ring so that the lower end of the valve core 33 is connected to the second valve port through the sealing ring. An airtight connection is formed so that the several liquid guide ports 332 of the valve core 33 are not connected to the infusion chamber 31 under the action of the second valve port. When the blood sampling connector 42 is inserted into the insertion of the connector, the blood sampling connector presses against the upper end of the valve core 33 so that the needle hole of the blood sampling connector 42 is connected to the liquid guide channel 331 of the valve core 33, and the lower end of the valve core 33 is extended into the infusion chamber 31 under the pressure of the blood sampling connector 42, so that the liquid guide channel 331 of the valve core 33 is connected to the infusion chamber 31.
[0030] Reference Figure 1 , Figure 4 , Figure 5 As shown, during specific operation, when blood sampling is required, the blood drawing component 1 is inserted into the vein of the child, and the blood sampling connector 42 of the blood sampling needle 41 is inserted into the jack of the connector 32. The infusion cavity is connected to the blood sampling needle by opening the valve core 33, and the rubber protective cover 43 and the transparent needle cover 44 on the blood sampling needle 41 are removed, and the blood sampling needle 41 is inserted into the vacuum blood collection tube for blood sampling, so that the blood flows into the vacuum blood collection tube under the action of negative pressure. When the blood sampling is completed, the blood sampling needle is pulled out, and the valve core 33 is reset under the elastic action of the elastic component, thereby closing the liquid guide channel 31 of the valve core 33.
[0031] In this embodiment, the top surface of the valve core 33 is in a cone shape, so that the top surface of the valve core presses against the edge of the needle hole of the blood sampling connector to prevent blood from overflowing during the blood sampling process.
[0032] Reference Figure 1 , Figure 2 As shown, further, the blood drawing component 1 includes a blood drawing connector 11, a catheter 12, and a blood drawing needle 13. The blood drawing connector 11 is provided with a blood drawing cavity 111 and an open cavity 112. The blood drawing cavity 111 is communicated with the catheter 12, and the blood drawing needle 13 is slidably inserted in the open cavity 112 and the blood drawing cavity 111 and is penetrated in the catheter 12. A guiding mechanism 5 is provided at the end of the blood drawing needle 13, and the guiding mechanism 5 is aligned with the open cavity 112.
[0033] Combination Figure 3 As shown, the guiding mechanism 5 includes a guiding end cover 51, which is covered at the opening of the open cavity 112, and a plurality of guiding strips 52 are equidistantly arranged on the bottom surface of the guiding end cover 51 along the circumferential direction, and a slider 131 is fixedly arranged at the end of the blood drawing needle 13, and the slider 131 is slidably matched with the open cavity 112, and a plurality of guiding holes slidably matched with the guiding strips 52 are equidistantly arranged on the slider 131 along the circumferential direction, and a needle holding handle 7 is arranged on one side of the slider 131, and a slide groove 113 is provided on the side wall of the blood drawing connector 11, and the needle holding handle 7 is slidably matched with the slide groove 113.
[0034] Furthermore, a pair of hooks are provided in the middle of the bottom surface of the guiding end cover 51, and a pair of grooves are provided on the top surface of the slider 131, so that after the slider 131 slides to the maximum limit position, the grooves of the slider 131 engage with the hooks of the guiding end cover 51 to fix the blood drawing needle 11 on the opening 112, thereby eliminating the need to remove the entire blood drawing needle to avoid injuring the cleaning staff.
[0035] Reference Figure 1-Figure 3As shown, during specific operation, the needle holder 7 is held to puncture at 15°-30°, and the angle is lowered to advance after blood returns. The catheter 12 is held in one hand and the needle holder 7 is held in the other hand. The blood drawing needle 11 is pushed while the catheter 12 is sent in. When the catheter 12 enters the vein of the child, the needle holder 7 is pushed to move in the direction of the guiding end cover 51, thereby driving the slider to pull the blood drawing needle 11 out of the catheter, and the catheter is fixed with a 3M sterile transparent dressing to prevent the catheter from falling off. In the process of pulling out the blood drawing needle 11, the guiding hole of the slider 131 is used to cooperate with the guiding strip to prevent the needle from shaking, causing the blood drawing needle to injure the child's wound or scratch the catheter, thereby ensuring the stability of the needle.
[0036] In this embodiment, the catheter 12 is a biological membrane similar to human blood vessels, has good compatibility with blood vessels, is soft, and has little stimulation to blood vessels. It will not fall out of the blood vessels or cause blood vessel perforation due to the patient's restlessness and struggle.
[0037] Reference Figure 2 As shown, an isolation plug 6 is provided in the head end of the open cavity 112. The center of the isolation plug 6 has a through hole 61 for the blood drawing needle 13 to pass through. In this embodiment, the isolation plug 6 is made of elastic material. When the blood drawing needle is drawn into the through hole of the isolation plug 6, the isolation plug 6 closes the through hole 61 under the action of elasticity, thereby preventing the blood in the blood drawing cavity 111 from flowing into the open cavity 112.
[0038] Reference Figure 1 , Figure 4 As shown, in this embodiment, the outer wall of the connector 32 has an external thread, which can be fixedly connected with the internal thread connector of the infusion set used clinically, so that after the blood collection is completed, the blood collection needle is taken out, and the internal thread connector of the infusion set is threadedly connected with the connector 32 of the infusion connector 3, and a needle tube is arranged in the internal thread connector, so that after the internal thread connector is fixed on the infusion connector 3, the valve core 33 is pressed downward by the needle tube of the internal thread connector, so that the infusion cavity 31 is connected with the infusion bottle, so that the liquid in the infusion bottle enters the infusion cavity 31 and flows into the vein of the child through the extension tube 2. Thereby reducing the number of punctures for the child, alleviating the pain of the child and reducing the workload of medical staff.
[0039] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical scheme of the utility model should be included in the protection scope of the utility model.
Claims
1. A new type of blood collection retention needle, characterized in that: It comprises a blood drawing component (1), an extension tube (2), an infusion connector (3), and a blood sampling component (4), wherein the head and tail ends of the extension tube (2) are respectively connected to the blood drawing component (1) and the infusion connector (3), and the blood sampling component (4) is inserted into the infusion connector (3); The blood drawing component (1) comprises a blood drawing connector (11), a catheter (12), and a blood drawing needle (13); the blood drawing connector (11) has a blood drawing cavity (111) and an opening cavity (112); the blood drawing cavity (111) is in communication with the catheter (12); the blood drawing needle (13) is slidably inserted into the opening cavity (112) and the blood drawing cavity (111) and is inserted into the catheter (12); the extension tube (2) is in communication with the blood drawing cavity (111); A guiding mechanism (5) is provided at the end of the blood drawing needle (13), and the guiding mechanism (5) cooperates with the opening cavity (112) for guiding; An infusion cavity (31) is provided in the infusion connector (3), the infusion cavity (31) is in communication with the extension tube (2), a connector (32) is provided on the infusion connector (3) for connecting to an infusion bottle or the blood sampling component (4), a valve core (33) is slidably provided between the connector (32) and the infusion cavity (31) for controlling the connection and disconnection between the connector (32) and the infusion cavity (31).
2. A novel blood sampling retention needle according to claim 1, characterized in that: The guiding mechanism (5) comprises a guiding end cover (51), the guiding end cover (51) is arranged at the opening of the opening cavity (112), and a plurality of guiding strips (52) are arranged equidistantly along the circumferential direction on the bottom surface of the guiding end cover (51), a slider (131) is fixedly arranged at the end of the blood drawing needle (13), the slider is slidably engaged with the opening cavity (112), and a plurality of guiding holes slidably engaged with the guiding strips (52) are arranged equidistantly along the circumferential direction on the slider (131).
3. A novel blood sampling retention needle according to claim 2, characterized in that: A needle holding handle (7) is provided on one side of the sliding block (131), and a sliding groove (113) is provided on the side wall of the blood drawing connector (11), and the needle holding handle (7) is slidably matched with the sliding groove (113).
4. A novel blood sampling retention needle according to claim 1, characterized in that: A valve core cavity (34) is provided in the infusion connector, one end of the valve core cavity (34) has a first valve port communicating with the infusion cavity (31), the other end of the valve core cavity (34) has a second valve port communicating with the connector (32), and the upper and lower ends of the valve core (33) are slidably matched with the first valve port and the second valve port, respectively.
5. A novel blood sampling retention needle according to claim 1 or 4, characterized in that: A liquid conducting channel (331) communicating with the connector (32) is arranged in the valve core (33), and a plurality of liquid conducting ports (332) communicating with the liquid conducting channel (331) are arranged on the lower outer wall of the valve core (33) along the circumferential direction.
6. A novel blood sampling retention needle according to claim 4, characterized in that: The middle outer wall of the valve core (33) has a limiting flange (333), and an elastic component is provided between the limiting flange (333) and the valve core cavity (34).
7. A novel blood sampling retention needle according to claim 1, characterized in that: The top surface of the valve core (33) is in a cone shape.
8. The novel blood sampling retention needle according to claim 1, characterized in that: The blood collection component (4) comprises a blood collection needle (41) and a blood collection connector (42), wherein the blood collection needle (41) is fixedly arranged on the blood collection connector (42) so that the blood collection needle (41) is inserted into the connector (32) through the blood collection connector (42) so that the blood collection needle (41) is in conduction with the infusion chamber (31).
9. A novel blood sampling retention needle according to claim 8, characterized in that: The outer wall of the blood sampling connector (42) is provided with a plurality of elastic expansion sheets (421) equidistantly along the circumferential direction, so that the blood sampling connector (42) is clamped in the connector (32) under the elastic action of the elastic expansion sheets (421).
10. The novel blood sampling retention needle according to claim 1, characterized in that: An isolation plug (6) is disposed in the head end of the open cavity (112), and a through hole (61) is provided at the center of the isolation plug (6) for the blood drawing needle (13) to pass through.