Convenient-to-fix anti-falling vein blood taking needle operated by one hand
By incorporating a guide structure consisting of release paper and a barrier ring in the venous blood collection needle, convenient single-handed fixation is achieved, solving the problems of cumbersome fixation operations and easy needle scratching of the blood vessel wall in existing technologies, thus improving the safety and reliability of the blood collection process.
Patent Information
- Application Number
- CN202610083095.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-02-17
AI Technical Summary
Existing venous blood collection needles have several drawbacks. After puncture, the fixation process is cumbersome and requires the use of both hands. The needle tip can easily scratch the blood vessel wall as the holder moves. Furthermore, when the connecting tubing is pulled, stress concentration at the connection point can cause seal failure or detachment.
By setting release paper with connecting blocking strips in the needle holder, and with the guide structure of limiter and blocking ring, convenient fixation of blood collection needles is achieved. After puncture, medical staff only need to pull the blocking strip with one hand to remove the release paper and expose the adhesive backing, so that the needle holder can be directly pasted and fixed to the patient's skin surface, thus achieving quick and convenient fixation of blood collection needles.
It enables convenient fixation of blood collection needles, reduces mechanical damage to blood vessel walls, enhances the reliability of tubing connections, and avoids seal failure or detachment caused by concentrated stress.
Smart Images
Figure CN121533729A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to a single-handed operation anti-falling venous blood collection needle convenient to fix. BACKGROUND
[0002] Venous blood collection is a routine operation method for blood sample collection in clinical medicine, and the convenience and safety of the operation are directly related to the efficiency of medical work and the experience of patients. However, the existing venous blood collection needle still has certain limitations in actual clinical application. After successful puncture, medical staff usually need to use medical tape to fix the needle handle on the patient's skin, but this fixing method often requires the operator to maintain the puncture state while freeing up the other hand to find, tear or paste the tape. This dependence on two-handed operation not only makes the operation process cumbersome, but also makes it difficult to meet the demand for single-handed operation in emergency situations, and the needle head is also prone to displacement due to unstable needle holding during the interval of finding the tape.
[0003] At the same time, the structural design of the traditional blood collection needle usually adopts a rigid connection mode of rigidly connecting the needle head and the needle handle. This hard connection without elastic buffer makes the needle head very sensitive to external mechanical movement. During continuous blood collection, whether it is the slight pressure applied by medical staff to the needle holder for stability or the slight vibration of the patient's limbs, will be directly transmitted to the needle tip inside the blood vessel without attenuation through the rigid structure, causing the needle head to rigidly oscillate or displace with the needle holder at the same frequency inside the blood vessel cavity, which is prone to mechanically scratching the blood vessel wall, causing pain, subcutaneous hematoma and even puncture failure in patients.
[0004] In addition, the connecting hose in the prior art is usually directly fixed at the end of the blood return pipeline by adhesive, and the connection part often lacks a special external stress dispersion or blocking mechanism. When the long hose is accidentally hooked or pulled by external force in a complex medical environment, the tensile stress generated will directly act on the fragile adhesive interface, causing the sealing layer to crack due to the inability to withstand the instantaneous tension, and further causing blood leakage accidents or causing the pipeline to fall off directly from the interface, seriously affecting the sealing reliability and safety of the blood collection process. SUMMARY
[0005] In view of the deficiencies of the prior art, the present application provides a single-handed operation anti-falling venous blood collection needle convenient to fix, which solves the problems of cumbersome fixing operation and the need for two-handed cooperation after puncture of the existing venous blood collection needle, the needle head is prone to scratching the blood vessel wall due to rigid movement of the needle holder, and the connection part of the connecting hose is prone to sealing failure or falling off due to stress concentration when pulled.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a single-handed operation anti-dislodgement venous blood collection needle that is easy to fix and includes a needle holder, a connecting component is provided on one side of the needle holder, two adhesive backings are fixedly connected to the bottom of the needle holder, two limiting components are provided on the outside of the needle holder, and a dustproof component is provided on one side of each adhesive backing. The needle holder has a slidably connected refractory vessel inside, and a puncture component is provided at the end of the refractory vessel. Multiple sliding components are provided on the outer wall of the refractory vessel, and a pressure relief component is provided on one side of the needle holder.
[0007] Preferably, the communication component includes a communication tube and a puncture needle, one end of the communication tube is fixedly connected to the end of the reflux vessel, and the other end of the communication tube is fixedly connected to the puncture needle.
[0008] Preferably, each of the limiting components includes a limiter and a blocking ring, with one side of the limiter fixedly connected to the outside of the needle holder and the bottom end of the blocking ring fixedly connected to the top of the needle holder.
[0009] Preferably, each of the dustproof components includes release paper and a blocking strip, with one side of the release paper disposed at the bottom of the adhesive backing, and the blocking strip fixedly connected to one end of the release paper, with one side of the blocking strip in contact with the blocking ring.
[0010] Preferably, the puncture assembly includes a needle and a dust cover, one end of the needle is fixedly connected to the end of the reflux vessel away from the connecting tubing, and the inner wall of the dust cover is slidably connected to the outer periphery of the needle.
[0011] Preferably, each of the sliding components includes a limiting post and two supporting springs. One end of the limiting post is fixedly connected to the outer wall of the reflux vessel, and the outer wall of the limiting post is slidably connected to the inner wall of the needle holder. Supporting springs are provided at the top and bottom of the limiting post. One end of each supporting spring is fixedly connected to the inside of the limiting post, and the other end of each supporting spring is fixedly connected to the inside of the needle holder.
[0012] Preferably, the pressure relief component includes a limiting strip and a locking strip. A connecting strip is fixedly connected to the outside of the needle holder. The top of the limiting strip is fixedly connected to the bottom of the connecting strip. The inner wall of the locking strip is fixedly connected to the outer wall of the connecting tube. Multiple mating strips are fixedly connected to the outer wall of the front end of the locking strip. The outer walls of the mating strips and the outer walls of the limiting strips engage with each other.
[0013] Preferably, the outer wall of the release paper is slidably connected to the middle of the limiter and the blocking ring, and the adhesive backing is arranged in a symmetrical array at the bottom of the needle holder.
[0014] Preferably, the limiters are arranged in a symmetrical array at both ends of the needle holder, and the blocking rings are arranged in a symmetrical array at the top of the needle holder.
[0015] Preferably, the limiting posts are arranged in a parallel array on the outer wall of the ileovascular tube, and the supporting springs are arranged in a symmetrical array on the outer wall of the limiting posts.
[0016] This invention provides a convenient, one-handed, anti-dislodgement venous blood collection needle that is easy to secure. It offers the following advantages: 1. This invention achieves convenient fixation of blood collection needles by setting release paper with connecting blocking strips at the bottom of the adhesive backing, and cooperating with the guide structure of limiters and blocking rings. After puncture, medical staff only need to pull the blocking strip with one hand to remove the release paper and expose the adhesive backing, and directly stick and fix the needle holder to the patient's skin. There is no need to find additional tape or perform two-handed operation, which simplifies the clinical operation steps and improves fixation efficiency.
[0017] 2. This invention reduces mechanical damage to the blood vessel wall through the sliding fit between the reflux vessel and the inner wall of the needle holder, as well as the elastic connection of the support spring. When the needle holder is subjected to external pressure adjustment or slight vibration, the internal reflux vessel uses the extension and contraction properties of the support spring to generate adaptive displacement, buffering the external force and preventing the needle from scratching the blood vessel or causing puncture failure due to the synchronous rigid movement of the needle holder, thus reducing the patient's discomfort.
[0018] 3. This invention utilizes a stress-relieving component consisting of a limiting strip, a locking strip, and a connecting strip to enhance the reliability of the tubing connection. When the connecting tubing is accidentally pulled, the tension is directly transmitted to the needle holder body fixed on the skin through the mechanical engagement of the locking strip and the limiting strip, rather than acting directly on the bonding point between the tubing and the reflux vessel. This avoids glue cracking or tubing detachment due to concentrated force, ensuring the sealing during the blood collection process. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the ileovascular structure of the present invention; Figure 3 for Figure 2 A magnified view of the structure at point A in the middle; Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B in the middle; Figure 5 This is a schematic diagram of the internal structure of the needle holder of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the structure at point C in the middle; Figure 7 This is a schematic diagram of the internal structure of the connecting hose of the present invention; Figure 8 for Figure 7A magnified schematic diagram of the structure at point D.
[0020] The components include: 1. Needle holder; 2. Connecting tubing; 3. Inserting needle; 4. Adhesive backing; 5. Release paper; 6. Limiter; 7. Barrier ring; 8. Blocking strip; 9. Return tube; 10. Needle; 11. Dust cover; 12. Limiting post; 13. Support spring; 14. Connecting strip; 15. Limiting strip; 16. Locking strip; 17. Connecting strip. Detailed Implementation
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] See attached document Figure 1 - Appendix Figure 4 The present invention provides a single-handed operation anti-dislodgement venous blood collection needle that is easy to fix and has a needle holder 1. A connecting component is provided on one side of the needle holder 1. Two adhesive backings 4 are fixedly connected to the bottom of the needle holder 1. Two limiting components are provided on the outside of the needle holder 1. A dustproof component is provided on one side of each adhesive backing 4. The needle holder 1 has a sliding connection to a return vessel 9 inside. The end of the return vessel 9 is provided with a puncture component. Multiple sliding components are provided on the outer wall of the return vessel 9. A pressure relief component is provided on one side of the needle holder 1.
[0023] The connecting components include a connecting tube 2 and a puncture needle 3. One end of the connecting tube 2 is fixedly connected to the end of the reflux vessel 9, and the other end of the connecting tube 2 is fixedly connected to the puncture needle 3. Each limiting component includes a limiter 6 and a blocking ring 7. One side of the limiter 6 is fixedly connected to the outside of the needle holder 1, and the bottom end of the blocking ring 7 is fixedly connected to the top of the needle holder 1. Each dustproof component includes a release paper 5 and a blocking strip 8. One side of the release paper 5 is located at the bottom of the adhesive backing 4, and the blocking strip 8 is fixedly connected to one end of the release paper 5. One side of the blocking strip 8 is in contact with the blocking ring 7. The outer wall of the release paper 5 is slidably connected to the middle of the limiter 6 and the blocking ring 7. The adhesive backing 4 is arranged in a symmetrical array at the bottom of the needle holder 1, the limiters 6 are arranged in a symmetrical array at both ends of the needle holder 1, and the blocking rings 7 are arranged in a symmetrical array at the top of the needle holder 1.
[0024] Specifically, once the needle 10 is precisely inserted into the patient's vein, medical staff do not need to interrupt the operation to find or remove the fixing tape, simplifying the operation process. At this time, the operator only needs to firmly pinch the extended blocking strip 8 with one hand and apply a moderate pulling force to pull it out smoothly to the outside. This allows the release paper 5 to be guided by the limiter 6 and the blocking ring 7 and move smoothly along the preset physical path, so that it can be completely and quickly peeled off from the surface of the adhesive 4. With the removal of the release paper 5, the highly viscous bottom surface of the adhesive 4 is exposed and then tightly adheres to the skin surface of the patient's puncture site, instantly locking the needle holder 1 securely. This achieves immediate fixation with one hand after puncture in one go, avoiding the risk of needle 10 displacement caused by traditional two-hand operation.
[0025] See attached document Figure 5 and attached Figure 6 The puncture assembly includes a needle 10 and a dust cover 11. One end of the needle 10 is fixedly connected to the end of the reflux vessel 9 away from the connecting tube 2. The inner wall of the dust cover 11 is slidably connected to the outer periphery of the needle 10. Each sliding assembly includes a limiting post 12 and two supporting springs 13. One end of the limiting post 12 is fixedly connected to the outer wall of the reflux vessel 9, and the outer wall of the limiting post 12 is slidably connected to the inner wall of the needle holder 1. Supporting springs 13 are provided at the top and bottom of the limiting post 12. One end of each supporting spring 13 is fixedly connected to the inside of the limiting post 12, and the other end of each supporting spring 13 is fixedly connected to the inside of the needle holder 1. The limiting posts 12 are arranged in a parallel array on the outer wall of the reflux vessel 9, and the supporting springs 13 are arranged in a symmetrical array on the outer wall of the limiting posts 12.
[0026] Specifically, during continuous blood collection, the reflux vessel 9 placed inside the needle holder 1 is not in a locked, rigidly fixed state. Instead, it is axially sliding with the inner wall of the needle holder 1 through the limiting post 12. It also relies on the support spring 13 to construct a unique elastic suspension support system. Once the needle holder 1 is subjected to external finger pressure or accidental physical vibration, the support spring 13 immediately undergoes adaptive expansion and contraction deformation, guiding the reflux vessel 9 to generate relative longitudinal displacement inside the needle holder 1 to absorb the impact force. This physically cuts off the rigid transmission path of external mechanical vibration to the needle tip, ensuring that even if the external needle holder 1 shakes, the needle 10 inserted into the human body can remain relatively still and stable. This avoids the risk of the needle tip scratching the blood vessel wall or causing penetrating damage due to following up and down movement within the blood vessel lumen.
[0027] See attached document Figure 7 and attached Figure 8The pressure relief assembly includes a limiting strip 15 and a locking strip 16. A connecting strip 14 is fixedly connected to the outside of the needle holder 1. The top of the limiting strip 15 is fixedly connected to the bottom of the connecting strip 14. The inner wall of the locking strip 16 is fixedly connected to the outer wall of the connecting tube 2. Multiple docking strips 17 are fixedly connected to the outer wall of the front end of the locking strip 16. The outer walls of the docking strips 17 and the outer walls of the limiting strip 15 engage with each other.
[0028] Specifically, during use, if the connecting tube 2 is subjected to sudden external pulling or accidental snagging, the resulting destructive pulling force will not act directly on the fragile end interface of the tube. Instead, it will be intercepted immediately by the locking strip 16, which is pre-fixed to the outer wall of the tube. The locking strip 16 uses its front end connecting strip 17 to form a tight mechanical contact and engagement with the limiting strip 15, so that the pulling force is efficiently transmitted to the main structure of the needle holder 1 through the connecting strip 14. Since the needle holder 1 has been firmly attached to the patient's skin, this external force is ultimately distributed and dissolved by the needle holder 1 as a whole and the skin surface. This provides stress isolation protection for the key glue bonding point between the connecting tube 2 and the return tube 9, fundamentally eliminating the safety hazards of sealing layer failure, leakage, or even accidental tube detachment caused by local stress concentration.
[0029] Working principle: When using a single-handed, anti-dislodgement venous blood collection needle that is easy to fix, after the needle 10 is inserted into the vein, medical staff do not need to free both hands to find the adhesive tape. They only need to hold the blocking strip 8 with one hand and pull it outward, causing the release paper 5 to move along the trajectory defined by the limiter 6 and the blocking ring 7, so that it can be easily detached from the surface of the adhesive 4. Subsequently, the exposed adhesive 4 directly and firmly attaches the needle holder 1 to the surface of the human skin, thus achieving quick and convenient fixation of the blood collection needle after puncture.
[0030] During blood collection, the reflux vessel 9 inside the needle holder 1 is not rigidly fixed, but is slidably connected to the inner wall of the needle holder 1 through the limiting post 12, and forms an elastic suspension structure with the support spring 13. When the needle holder 1 is subjected to external pressure or vibration, the reflux vessel 9 can generate relative up and down displacement to buffer, block the transmission of vibration to the needle tip, and prevent the needle 10 from moving up and down inside the blood vessel, causing damage or rupture to the blood vessel wall.
[0031] When the connecting tubing 2 is accidentally pulled, the pulling force is not directly applied to the tubing interface, but is preferentially transmitted to the locking strip 16 fixed to the tubing. The locking strip 16 transmits the force to the limiting strip 15 and the connecting strip 14 through the connecting strip 17, and finally the main body of the needle holder 1 fixed to the skin bears this pulling force, protecting the glue bonding point between the connecting tubing 2 and the return tube 9, and preventing the seal from being damaged or the tube from falling off due to force.
Claims
1. A single-handed, anti-dislodgement venous blood collection needle that is easy to secure, characterized in that... Includes a needle holder (1), a connecting component is provided on one side of the needle holder (1), two adhesive backings (4) are fixedly connected to the bottom of the needle holder (1), two limiting components are provided on the outside of the needle holder (1), and a dustproof component is provided on one side of each adhesive backing (4). The needle holder (1) has a sliding connection to a reflux vessel (9) inside. A puncture component is provided at the end of the reflux vessel (9). Multiple sliding components are provided on the outer wall of the reflux vessel (9). A pressure relief component is provided on one side of the needle holder (1).
2. The easy-to-fix, single-handed, anti-dislodgement venous blood collection needle according to claim 1, characterized in that, The communication assembly includes a communication hose (2) and a puncture needle (3). One end of the communication hose (2) is fixedly connected to the end of the reflux vessel (9), and the other end of the communication hose (2) is fixedly connected to the puncture needle (3).
3. The single-handed, anti-dislodgement venous blood collection needle for easy fixation as described in claim 1, characterized in that, Each of the limiting components includes a limiter (6) and a blocking ring (7), with one side of the limiter (6) fixedly connected to the outside of the needle holder (1) and the bottom end of the blocking ring (7) fixedly connected to the top of the needle holder (1).
4. A single-handed, anti-dislodgement venous blood collection needle for easy fixation as described in claim 1, characterized in that, Each of the dustproof components includes a release paper (5) and a blocking strip (8), with one side of the release paper (5) disposed at the bottom of the adhesive backing (4), and the blocking strip (8) fixedly connected to one end of the release paper (5), with one side of the blocking strip (8) in contact with the blocking ring (7).
5. A single-handed, anti-dislodgement venous blood collection needle for easy fixation according to claim 1, characterized in that, The puncture assembly includes a needle (10) and a dust cover (11). One end of the needle (10) is fixedly connected to the end of the reflux vessel (9) away from the connecting tube (2), and the inner wall of the dust cover (11) is slidably connected to the outer periphery of the needle (10).
6. A single-handed, anti-dislodgement venous blood collection needle for easy fixation according to claim 1, characterized in that, Each of the sliding components includes a limiting post (12) and two support springs (13). One end of the limiting post (12) is fixedly connected to the outer wall of the reflux vessel (9), and the outer wall of the limiting post (12) is slidably connected to the inner wall of the needle holder (1). Support springs (13) are provided at the top and bottom of the limiting post (12). One end of each support spring (13) is fixedly connected to the inside of the limiting post (12), and the other end of each support spring (13) is fixedly connected to the inside of the needle holder (1).
7. A single-handed, anti-dislodgement venous blood collection needle for easy fixation according to claim 1, characterized in that, The pressure relief assembly includes a limiting strip (15) and a locking strip (16). A connecting strip (14) is fixedly connected to the outside of the needle holder (1). The top of the limiting strip (15) is fixedly connected to the bottom of the connecting strip (14). The inner wall of the locking strip (16) is fixedly connected to the outer wall of the connecting tube (2). A plurality of docking strips (17) are fixedly connected to the outer wall of the front end of the locking strip (16). The outer wall of the docking strip (17) and the outer wall of the limiting strip (15) mesh with each other.
8. A single-handed, anti-dislodgement venous blood collection needle for easy fixation according to claim 4, characterized in that, The outer wall of the release paper (5) is slidably connected to the middle of the limiter (6) and the blocking ring (7), and the adhesive backing (4) is arranged in a symmetrical array at the bottom of the needle holder (1).
9. A single-handed, anti-dislodgement venous blood collection needle for easy fixation according to claim 3, characterized in that, The limiters (6) are arranged in a symmetrical array at both ends of the needle holder (1), and the blocking rings (7) are arranged in a symmetrical array at the top of the needle holder (1).
10. A single-handed, anti-dislodgement venous blood collection needle for easy fixation according to claim 6, characterized in that, The limiting posts (12) are arranged in a parallel array on the outer wall of the ileovascular tube (9), and the supporting springs (13) are arranged in a symmetrical array on the outer wall of the limiting posts (12).