Novel artery puncture needle

Abstract

The utility model relates to the technical field of arterial puncture. The novel artery puncture needle comprises an indwelling hose, a needle core is inserted into the indwelling hose in a sliding mode, the outer surface of the top end of a first observation column is sleeved with an outer sleeve in a sliding mode, spring buckles are fixed to the two sides of the top end of the first observation column, and a clamping plate is fixed to the top end of the needle core. Push plates are slidably inserted in the positions, close to the small springs, of the two sides of the lower end of the outer sleeve. The first observation column, the outer sleeve, the push plate, the small spring, the second observation column, the clamping plate and the large spring are used in cooperation, the needle core can be effectively prevented from being exposed outside, and occupational exposure accidents are reduced; the first observation column, the one-way check valve, the spring buckle, the outer sleeve, the needle core and the formed clamping hole are used in cooperation, and the situation that the indwelling hose is pulled out of the blood vessel by mistake due to tedious steps, difficult operation and the like, and consequently blood splashing is caused can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of arterial puncture technology; more specifically, it relates to a novel arterial puncture needle. Background Technology

[0002] Arterial puncture and catheterization is a fundamental skill that anesthesiology residents must master. In clinical practice, patients requiring continuous blood pressure monitoring and repeated blood gas analysis due to hemodynamic instability, severe hypotension, shock with difficulties in indirect measurement methods, critical illness, or intraoperative and postoperative monitoring during complex surgeries; or patients requiring connection to external life support devices via indwelling catheters for continuous administration of vasoactive drugs, require arterial puncture and catheterization.

[0003] Currently, most conventional puncture needles have the needle tip directly exposed during use, making doctors highly susceptible to needle-related injuries during procedures, thus increasing the risk of occupational exposure and resulting in low safety. Furthermore, when removing the needle after inserting the catheter, conventional puncture needles are prone to blood splattering due to doctor tremors or slow operation. The catheter and needle are also difficult to detach, requiring cumbersome and time-consuming procedures, and are prone to being pulled out of the patient's body along with the puncture needle due to operational errors. Some doctors try to prevent this by forcefully pressing the catheter, but this method not only requires considerable experience from the doctor but also causes significant discomfort to the patient. Therefore, a new type of arterial puncture needle is urgently needed to solve these problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a novel arterial puncture needle to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a novel arterial puncture needle, comprising:

[0006] An indwelling tubing is provided, with an observation post fixed to its top end and a connector connected to one side of the middle of the observation post. A one-way check valve is installed on one side of the observation post. A needle core is slidably inserted inside the indwelling tubing, and a needle hole is opened at the top end of the observation post.

[0007] The outer sleeve is slidably fitted on the outer surface of the top end of the observation column one, and the bottom end of the outer sleeve is provided with through holes on both sides. The top end of the observation column one is fixed with spring buckles on both sides, and one end of the spring buckle is slidably inserted into the hole.

[0008] A clamping plate is fixed to the top end of the needle core, and an observation column II is fixed to the upper surface of the clamping plate. A large spring is fixed to the lower surface of the clamping plate. Small springs are fixed to both sides of the lower end of the outer sleeve tube. A push plate is slidably inserted near the small springs on both sides of the lower end of the outer sleeve tube.

[0009] Preferably, there are two sets of spring buckles, which are symmetrically distributed on both sides of the top end of the observation column I. One end of the spring buckle is a spring, and one end of the spring is fixedly connected to the outer wall of the observation column I. The other end of the spring buckle is a pressing block, and one end of the pressing block slides through the card hole and is located outside the outer sleeve tube. When pinching the two sets of spring buckles in the middle, it is convenient to disassemble between the outer sleeve tube and the observation column I.

[0010] Preferably, a soft plug is fixedly inserted inside the needle hole, and the soft plug can block the needle hole. One end of the needle core can slidably penetrate through the middle of the soft plug, preventing the blood in the observation column I from flowing out through the needle hole, and at the same time providing a channel for the movement of the needle core.

[0011] Preferably, there are two sets of push plates, which are symmetrically and mirror-image distributed on both sides of the outer sleeve tube. The push plates are in the shape of "Ji". The side length of the square formed by the intersection of one ends of the two sets of push plates is equal to the width of the clamping plate. The length of the clamping plate is greater than the side length of the square. The other end of the push plate is fixedly connected to one end of the small spring, so that the push plate can limit and fix the clamping plate in the initial state and prevent the clamping plate from moving up.

[0012] Preferably, the large spring is slidably sleeved on the outer surface of the top end of the needle core, and the bottom end of the large spring abuts against the top of the observation column I, so that the large spring can drive the needle core to quickly bounce back when it rebounds.

[0013] Preferably, the length of the needle core is less than the inner wall length of the outer sleeve tube, so that the outer sleeve tube can accommodate the complete needle core and prevent the needle core from being exposed.

[0014] The technical effects and advantages of the present utility model: Through the cooperation of the observation column I, the outer sleeve tube, the push plate, the small spring, the observation column II, the clamping plate and the large spring, after the device is used, the two sets of push plates can be pinched in the middle, so as to quickly retract the needle core into the outer sleeve tube, effectively preventing the needle core from being exposed, greatly reducing the risk of doctors being scratched, reducing the occurrence of occupational exposure accidents, and improving the safety performance of the device during use;

[0015] By observing the interaction between the observation column, one-way check valve, spring clip, outer tube, needle core, and the pre-drilled locking hole, the quick-retractable design of the needle core ensures that the indwelling catheter will not be easily pulled out when placed in the patient's blood vessel, guaranteeing the effectiveness of the indwelling catheter placement. Furthermore, the disassembly process between the observation column and the outer tube is simple and quick, preventing the indwelling catheter from being accidentally pulled out of the blood vessel due to cumbersome or difficult procedures, thus avoiding blood splatter. This is especially important for patients with severe hypotension or shock, ensuring their safety. Moreover, it eliminates the need for excessive pressure on the indwelling needle, preventing improper pressure that could cause massive arterial blood splatter or needle dislodgement leading to surgical failure, thereby improving the success rate of the procedure. Attached Figure Description

[0016] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0018] Figure 3 This is a partial three-dimensional structural diagram of the present invention.

[0019] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0020] The attached diagram is labeled as follows: 1. Indwelling tubing; 2. Observation column one; 3. Connector; 4. One-way check valve; 5. Spring clip; 6. Pinhole; 7. Outer tube; 8. Push plate; 9. Small spring; 10. Observation column two; 11. Clamping plate; 12. Large spring; 13. Needle core; 14. Clamping hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The instrument placement rack involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] like Figures 1 to 3As shown, this embodiment proposes a novel arterial puncture needle, including an indwelling tubing 1, an observation column 2 fixed to the top of the indwelling tubing 1, and a connector 3 connected to one side of the middle of the observation column 2. A one-way check valve 4 is installed on one side of the observation column 2. The observation column 2 is configured as an inverted T-shape, and one side of the connector 3 is internally connected and fixed to the end of the observation column 2 away from the indwelling tubing 1 and the needle hole 6, which facilitates the connection of the connector 3 to an external blood pressure detector. After the one-way check valve 4 is opened, blood can flow through the connector 3 to the blood pressure detector, thereby facilitating the detection of blood pressure values ​​and improving the rationality and practicality of the device.

[0024] The indwelling tubing 1 has a needle core 13 slidably inserted inside it, and the bottom end of the needle core 13 is slidably inserted inside the indwelling tubing 1. There is a certain gap between the inner wall of the indwelling tubing 1 and the outer wall of the needle core 13, so that part of the blood can flow into the observation column 2 and part of the blood can flow into the needle core 13. This makes it easy to determine whether the needle core 13 is located in the arterial tube by observing the pulsation characteristics of the blood in the observation column 2.

[0025] The top of the observation column 2 has a needle hole 6, and a soft plug is fixedly inserted inside the needle hole 6. The soft plug can seal the needle hole 6. One end of the needle core 13 can slide through and be inserted into the middle of the soft plug. The length of the needle core 13 is less than the inner wall length of the outer tube 7, so that the needle core 13 can be completely inside the outer tube 7, avoiding the needle tip being exposed and scratching the doctor, causing occupational exposure. When the needle core 13 slides back into the outer tube 7, the needle hole 6 will not block it, ensuring that the connector 3 can retract smoothly. When the needle core 13 is completely separated from the observation column 2, the soft plug can seal the needle hole 6 to prevent blood in the observation column 2 from spraying out from the needle hole 6.

[0026] The outer sleeve 7 is slidably fitted onto the outer surface of the top end of the observation column 2. The bottom end of the outer sleeve 7 has through-holes 14 on both sides. Spring clips 5 are fixed to both sides of the top end of the observation column 2, with one end of each spring clip 5 slidably inserted into the through-hole 14. Two sets of spring clips 5 are symmetrically distributed on both sides of the top end of the observation column 2. One end of each spring clip 5 is a spring, and one end of the spring is fixedly connected to the outer wall of the observation column 2. The other end of each spring clip 5 is a pressing block. One end slides through the locking hole 14 and is located outside the outer tube 7. When it is necessary to disassemble the outer tube 7 and the observation column 2, the two sets of spring clips 5 can be pinched directly in the center, so that one end of the pressing block of the spring clip 5 slides out from the locking hole 14 to the inside of the outer tube 7. In this way, there is no obstruction between the outer tube 7 and the observation column 2, and the outer tube 7 can be directly pulled out from the outside of the observation column 2. The operation steps are simple and time-saving, and it is not easy for the indwelling tubing 1 to be pulled out from the patient's arterial tube due to complicated operation or being busy. This brings great convenience to doctors.

[0027] Example Two

[0028] As shown in Figure 4 Figure, based on the same concept as the above embodiment, this embodiment also proposes: a clamping plate 11, the top end of the needle core 13 is fixed with the clamping plate 11, and an observation column two 10 is fixed on the upper surface of the clamping plate 11. Circular holes are provided in the middle of the bottom end of the observation column two 10 and the middle of the clamping plate 11, and the circular holes are communicated with the inside of the needle core 13, so that blood can enter the clamping plate 11 through the needle core 13 and then enter the observation column two 10 from the clamping plate 11, which is convenient for doctors to judge whether the needle core 13 has penetrated into the patient's artery by observing whether there is blood in the observation column two 10, providing guarantee for the effectiveness of the puncture effect, and effectively preventing puncture failure caused by visual blind spots;

[0029] A large spring 12 is fixed on the lower surface of the clamping plate 11. The large spring 12 is slidably sleeved on the outer surface of the top end of the needle core 13, and the bottom end of the large spring 12 abuts against the top of the observation column one 2. Under the resilience of the large spring 12, the needle core 13 can be quickly bounced up into the outer sleeve 7, ensuring the strength and effectiveness of the retraction of the needle core 13, ensuring that the needle core 13 will not be easily exposed to scratch the doctor, and the rebound speed of the large spring 12 is relatively fast, which can prevent blood splashing caused by the slow retraction speed of the needle core 13;

[0030] Small springs 9 are fixed on both sides of the lower end of the outer sleeve 7. A push plate 8 is slidably inserted near the small springs 9 on both sides of the lower end of the outer sleeve 7. There are two groups of push plates 8, and the two groups of push plates 8 are symmetrically and mirror-distributed on both sides of the outer sleeve 7. The push plate 8 is set in a "ji" shape. The side length of the square formed by the intersection of one ends of the two groups of push plates 8 is equal to the width of the clamping plate 11, and the length of the clamping plate 11 is greater than the side length of the square. The other end of the push plate 8 is fixedly connected to one end of the small spring 9, so that the push plate 8 can limit and block the clamping plate 11 in the initial state, preventing the clamping plate 11 from moving up and causing the needle core 13 to retract, ensuring the stability of the needle core 13 during the piercing process, and when pinching the two groups of push plates 8 in the middle, the obstruction to the clamping plate 11 can be removed, providing conditions for the retraction of the needle core 13.

[0031] Working principle: During use, the operator holds the device so that the bottom of the needle core 13 is at a 30-45 degree angle to the skin, piercing towards the proximal end. After the needle core 13 pierces the artery, the indwelling tubing 1 will follow the needle core 13 into the arterial lumen. Some blood will enter the observation column 1 2 through the gap between the indwelling tubing 1 and the needle core 13, and some blood will enter the observation column 2 10 through the needle core 13. Then, the device angle is lowered to 15 degrees, and the indwelling tubing 1 is pushed into the arterial lumen. Then, the two sets of push plates 8 are pressed in the center, causing the small spring 9 to be compressed. The length of the square formed by the intersection of the two sets of push plates 8 inside the outer tube 7 will increase until the length exceeds the length of the clamping plate 11. Then, the top of the clamping plate 11 is no longer obstructed, and the large spring 12 rebounds. Under the action of the large spring 12, the clamping plate 11 rises, and the clamping plate 11 drives the observation column 10 and the needle core 13 to rise synchronously. The needle core 13 is driven to slide back into the outer tube 7 along the needle hole 6, while the indwelling tubing 1 remains in the arterial tube. Then, the two sets of spring clips 5 are pinched in the center, so that one end of the spring clip 5 is compressed. After the pressing end of the spring clip 5 slides out from the clamping hole 14, the outer tube 7 can be directly slid out from the outer surface of the observation column 2. In this way, the indwelling tubing 1, observation column 2, spring clips 5, connector 3 and one-way check valve 4 are placed on the patient. Later, connector 3 can be connected to an external blood pressure monitor, and the one-way check valve 4 can be opened to allow the blood in the observation column 2 to flow smoothly into the external blood pressure monitor for blood pressure measurement. The above is the complete working principle of this utility model.

[0032] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0034] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel arterial puncture needle, characterized in that, Including: An indwelling hose (1), at the top end of the indwelling hose (1), an observation column one (2) is fixed, and on one side in the middle of the observation column one (2), a joint (3) is connected. On one side of the observation column one (2), a one-way check valve (4) is installed. Inside the indwelling hose (1), a needle core (13) is slidably inserted, and at the top end of the observation column one (2), a needle hole (6) is opened. An outer sleeve (7), on the outer surface at the top end of the observation column one (2), the outer sleeve (7) is slidably sleeved. At both sides of the bottom end of the outer sleeve (7), through holes (14) are opened. At both sides of the top end of the observation column one (2), spring buckles (5) are fixed, and one end of the spring buckle (5) is slidably inserted into the through hole (14). A clamping plate (11), at the top end of the needle core (13), the clamping plate (11) is fixed, and on the upper surface of the clamping plate (11), an observation column two (10) is fixed. On the lower surface of the clamping plate (11), a large spring (12) is fixed. At both sides of the lower end of the outer sleeve (7), small springs (9) are fixed. At both sides of the lower end of the outer sleeve (7) near the small springs (9), push plates (8) are slidably inserted.

2. The novel arterial puncture needle according to claim 1, characterized in that: There are two groups of the spring buckles (5), and the two groups of spring buckles (5) are symmetrically distributed at both sides of the top end of the observation column one (2). One end of the spring buckle (5) is a spring, and one end of the spring is fixedly connected to the outer wall of the observation column one (2). The other end of the spring buckle (5) is a pressing block, and one end of the pressing block slides through the through hole (14) and is located outside the outer sleeve (7).

3. The novel arterial puncture needle according to claim 1, characterized in that: Inside the needle hole (6), a soft plug is fixedly inserted, and the soft plug can block the needle hole (6). One end of the needle core (13) can slidably penetrate through the middle of the soft plug.

4. The novel arterial puncture needle according to claim 1, characterized in that: There are two groups of the push plates (8), and the two groups of push plates (8) are symmetrically and mirror-image distributed on both sides of the outer sleeve (7). The push plate (8) is in the shape of "ji". The side length of the square formed by the intersection of one ends of the two groups of push plates (8) is equal to the width of the clamping plate (11). The length of the clamping plate (11) is greater than the side length of the square. The other end of the push plate (8) is fixedly connected to one end of the small spring (9).

5. The novel arterial puncture needle according to claim 1, characterized in that: The large spring (12) is slidably sleeved on the outer surface at the top end of the needle core (13), and the bottom end of the large spring (12) abuts against the top of the observation column one (2).

6. The novel arterial puncture needle according to claim 1, characterized in that: The length of the needle core (13) is less than the inner wall length of the outer sleeve (7).

Images