Novel distal radial artery puncture needle

Abstract

The novel distal radial artery puncture needle comprises a first needle cylinder and a needle tip, the needle tip is communicated with the interior of the first needle cylinder, a control assembly is arranged on the outer side of the first needle cylinder, a liquid guide assembly is arranged in the first needle cylinder, the length of the needle tip is 45 mm, and the inner and outer diameter specifications of the needle tip are the same as those of a 20G puncture needle; the control assembly arranged in the puncture needle can help medical staff to control and temporarily fix the needle point, and meanwhile, the length of the needle point is adjusted to be 45 mm, so that the puncture success rate of patients with thick and fat hand backs and long hand backs can be increased; puncture can be carried out by pinching the pair of control panels arranged on the outer side of the first needle cylinder through the thumb and the index finger of the right hand, the puncture direction and the needle tip inclined plane orientation can be judged through the orientation mark arranged at the top end of the first needle cylinder in the puncture process, blood in the second needle cylinder is pumped back into the artery of a patient after puncture is completed, and the needle core is taken out outwards. A rubber ring and a liquid guide assembly arranged at one end of the first needle cylinder can prevent blood of a patient from splashing outwards, and equipment pollution is reduced to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of arterial puncture, and more specifically, to a novel distal radial artery puncture needle. Background Art

[0002] Compared with the femoral artery approach, the radial artery approach is particularly favored by patients due to its advantages such as fewer complications, shorter patient immobilization time, and no need for bed rest. The radial artery approach is divided into two methods: traditional radial artery (TRA) and distal radial artery (dTRA). The risks of the TRA approach include poor ulnar collateral circulation leading to hand ischemia and the inability to insert the radial artery due to its relatively small diameter.

[0003] However, when the dTRA approach is used to enter the radial artery distal to the superficial palmar arch in the anatomical snuffbox, the risk of hand ischemia can theoretically be eliminated due to the presence of ulnar collateral blood flow there1. Since the inner diameter of the distal radial artery is smaller than that of the forearm radial artery (2.19 vs 2.56 mm, p < 0.001, ultrasound)2, puncture is more difficult. Currently, the diagnosis and treatment of cerebrovascular diseases are more often completed through the TRA approach, but the dTRA approach has potential explosive power. However, the existing puncture needles for the distal radial artery approach have some shortcomings: the femoral artery puncture needle is relatively thick and too long, which is not very suitable, and after the puncture is successful, the puncture sheath needs to be retained. The current puncture needle is not conducive to temporary fixation and is easy to slip. Summary of the invention

[0004] The invention provides a novel distal radial artery puncture needle to solve the problems that the femoral artery puncture needle in the prior art is relatively too long and unsuitable for radial artery puncture, and is not conducive to temporary fixation and is easy to slip after successful puncture.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A novel distal radial artery puncture needle comprises a first syringe and a needle tip, wherein the needle tip is connected to the interior of the first syringe, a control component is arranged on the outside of the first syringe, a liquid guide component is arranged inside the first syringe, the needle tip is 45 mm long, and the inner and outer diameter specifications of the needle tip are the same as those of a 20G puncture needle.

[0007] Preferably, the control assembly includes a pair of connecting plates symmetrically arranged on the outside of the first syringe, and the outsides of the two connecting plates are connected to control plates, the control plates are composed of a section of arc-shaped plate and a straight plate at one end, and the control plates are vertically connected to the connecting plates.

[0008] Preferably, an orientation mark is provided at the top end of the first syringe, and the outer surface of the orientation mark is colored.

[0009] Preferably, a needle core is inserted into the needle tip, one end of the needle core is connected to the second syringe, one end of the first syringe close to the second syringe is connected to a rubber ring, and the rubber ring covers the outside of the needle core.

[0010] Preferably, a fixing column is provided in the second syringe, a spiral plate is connected to the outer side of the fixing column, the outer side of the spiral plate is fixedly connected to the inner wall of the second syringe, and the second syringe is made of colorless and transparent material.

[0011] Preferably, the liquid guiding assembly comprises a partition connected to the inner wall of the first syringe, an end of the partition away from the needle tip is connected to a catheter, and the needle core passes through the catheter.

[0012] Preferably, a connecting block is provided on the inner wall of the first syringe, a sealing cover is hinged on the connecting block, and the sealing cover has a tendency to rotate downward.

[0013] Preferably, a rubber film is provided on the sealing cover, and when the sealing cover is in contact with the outer wall of the catheter, the rubber film and the needle tip are in the same straight line.

[0014] Preferably, the second syringe is connected to the first syringe via a positioning assembly, the positioning assembly comprises a pair of fixed blocks arranged outside the second syringe, both of the fixed blocks are provided with side cavities, a pressure block is arranged outside the control board, the pressure block is connected to the inner wall of the side cavity via an elastic plate, the inner side of the pressure block is connected to a first wedge block via an L-shaped plate, the L-shaped plate is slidably clamped in the side cavity. A second wedge block is arranged inside the fixed block, and the second wedge block contacts the first wedge block via a plane.

[0015] Preferably, the bottom end of the catheter is connected to a transfer tube, the bottom end of the first syringe is provided with an observation box, and the transfer tube is clamped in the observation box.

[0016] Preferably, a liquid inlet cavity is provided at one end of the inner wall of the observation box, one end of the transfer tube is connected to the liquid inlet cavity, the liquid inlet cavity is connected to a first observation cavity, and the first observation cavity is provided on a side of the observation box away from the needle tip.

[0017] Preferably, a plurality of liquid guide plates are arranged in the observation box, all of which are arranged along an axial direction perpendicular to the first syringe, the liquid guide plates are staggered, and an observation plate is provided on the side of the observation box away from the needle tip, and the observation plate is made of colorless and transparent material.

[0018] Preferably, an exhaust cavity is provided at one end of the observation box away from the first observation cavity, and an air valve is connected to the outer side of the exhaust cavity via a soft rubber hose.

[0019] The principle and beneficial effects of this technical solution:

[0020] (1) The control component provided in the present invention can help medical staff control and temporarily fix the needle tip. At the same time, adjusting the needle tip length to 45 mm can improve the puncture success rate of patients with thick and obese backs of hands and long backs of hands. When using the puncture needle for puncture, the right thumb and index finger are used to pinch a pair of control panels provided on the outside of the first syringe to perform puncture. During the puncture process, the puncture direction and the direction of the needle tip bevel can be determined by the directional mark provided on the top of the first syringe. When the puncture is completed, arterial blood will be pumped to the second syringe connected to the needle core under the action of blood pressure, and gradually flow through the spiral plate connected to the outside of the second syringe. Medical staff can determine whether the puncture needle posture and position need to be adjusted according to the blood flow rate. After the adjustment is completed, the blood in the second syringe is pumped back into the patient's artery, and the needle core is taken out. The rubber ring and liquid guide component provided at one end of the first syringe can prevent the patient's blood from splashing, thereby minimizing equipment contamination.

[0021] (2) The liquid guide assembly provided in the present invention can guide the blood entering the first syringe after the needle core is removed, thereby helping medical staff to judge the real-time status of the puncture needle while preventing blood from splashing from the patient. When the needle core is removed, the hinged sealing cover on the connecting block will quickly rotate downward and fit to the outer wall of the catheter to prevent blood from splashing from the through hole position of the catheter used to pass through the needle core. At this time, the blood will be introduced into the liquid inlet cavity provided in the observation box through the catheter, and flow along the liquid guide plate to the first observation cavity. Medical staff can judge the current status of the puncture needle according to the speed at which the blood flows to the first observation cavity. At the same time, the exhaust cavity provided at one end of the observation box will be discharged by the valve.

[0022] (3) The positioning assembly provided in the present invention can lock the position of the second syringe to prevent the blood pressure from impacting the second syringe and causing the second syringe to directly drive the needle core out of the device. When the needle core needs to be actively removed, the index finger and thumb that pinch the control panel are rotated toward the plane side so that the index finger and thumb press the pressure block provided on the outer side of the control panel. At this time, the pressure block will drive the L-shaped plate and the first wedge block to move downward and compress the elastic plate at the same time. When the first wedge block and the second wedge block are misaligned, the second syringe can be withdrawn backward. At this time, the squeezing of the pressure block is stopped and the pressure block will be reset under the elastic force of the elastic plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the present invention after being cut along a vertical plane;

[0025] Figure 3 It is a schematic diagram of the structure of the present invention after being cut along a horizontal plane;

[0026] Figure 4 It is a schematic diagram of the structure of the observation box of the present invention after being cut along a horizontal plane;

[0027] The figure marks in the drawings of the specification include: 1. control board; 2. first syringe; 3. needle tip; 4. connecting plate; 5. fixing block; 6. observation box; 7. sealing cover; 8. connecting block; 9. needle core; 10. orientation mark; 11. fixing column; 12. spiral plate; 13. rubber ring; 14. catheter; 15. transfer tube; 16. partition; 17. pressure block; 18. elastic plate; 19. L-shaped plate; 20. first wedge block; 21. side cavity; 22. second syringe; 23. second wedge block; 24. liquid inlet cavity; 25. exhaust cavity; 26. observation plate; 27. liquid guide plate; 28. first observation cavity. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0029] Example:

[0030] like Figures 1 to 4 As shown, the present invention provides a novel distal radial artery puncture needle, comprising a first syringe 2 and a needle tip 3, the needle tip 3 is connected to the inside of the first syringe 2, a control component is arranged on the outside of the first syringe 2, a liquid guide component is arranged inside the first syringe 2, the needle tip 3 is 45 mm long, and the inner and outer diameter specifications of the needle tip 3 are the same as those of a 20G puncture needle.

[0031] like Figure 1 As shown, the control assembly includes a pair of connecting plates 4 symmetrically arranged on the outside of the first syringe 2, and the outsides of the two connecting plates 4 are connected to a control board 1. The control board 1 consists of a section of arc-shaped plate and a straight plate at one end. The control board 1 is vertically connected to the connecting plate 4.

[0032] like Figure 1 and Figure 2 As shown, an orientation mark 10 is provided at the top end of the first syringe 2, and the outer surface of the orientation mark 10 is colored.

[0033] like Figures 1 to 3 As shown, a needle core 9 is inserted into the needle tip 3 , one end of the needle core 9 is connected to the second needle cylinder 22 , and one end of the first needle cylinder 2 close to the second needle cylinder 22 is connected to a rubber ring 13 , which covers the outer side of the needle core 9 .

[0034] like Figure 2 and Figure 3 As shown, a fixing column 11 is arranged in the second syringe 22, and a spiral plate 12 is connected to the outside of the fixing column 11. The outside of the spiral plate 12 is fixedly connected to the inner wall of the second syringe 22, and the second syringe 22 is made of colorless and transparent material.

[0035] like Figure 1 and Figure 2As shown, the liquid guiding assembly includes a partition 16 connected to the inner wall of the first syringe 2 , and the end of the partition 16 away from the needle tip 3 is connected to a catheter 14 , and the needle core 9 passes through the catheter 14 .

[0036] like Figure 1 and Figure 2 As shown, a connecting block 8 is provided on the inner wall of the first syringe 2, and a sealing cover 7 is hinged on the connecting block 8, and the sealing cover 7 has a tendency to rotate downward.

[0037] like Figure 1 and Figure 2 As shown, a rubber film is provided on the sealing cover 7. When the sealing cover 7 is in contact with the outer wall of the catheter 14, the rubber film and the needle tip 3 are in the same straight line.

[0038] The liquid guide assembly can guide the blood that enters the first syringe 2 after the needle core 9 is taken out, helping medical staff to judge the real-time status of the puncture needle while preventing blood from splashing from the patient. When the needle core 9 is taken out, the hinged sealing cover 7 on the connecting block 8 will quickly rotate downward and fit to the outer wall of the catheter 14 to prevent blood from splashing from the through hole position of the catheter 14 used to pass through the needle core 9. At this time, the blood will be introduced into the liquid inlet cavity 24 set in the observation box 6 through the catheter 14, and flow along the liquid guide plate 27 to the first observation cavity. Medical staff can judge the current status of the puncture needle according to the speed of blood flowing to the first observation cavity, and at the same time, the exhaust cavity 25 set at one end of the observation box 6 will be discharged by the valve;

[0039] When it is necessary to insert a guide wire, the guide wire is inserted along the rubber ring 13 and penetrates the rubber film on the sealing cover 7 that is in line with the needle tip 3 , and then the guide wire can be inserted along the needle tip 3 .

[0040] like Figures 1 to 3 As shown, the second syringe 22 is connected to the first syringe 2 through a positioning assembly, which includes a pair of fixed blocks 5 arranged outside the second syringe 22, and a side cavity 21 is provided in both fixed blocks 5. A pressing block 17 is arranged outside the control board 1, and the pressing block 17 is connected to the inner wall of the side cavity 21 through an elastic plate 18. The inside of the pressing block 17 is connected to the first wedge block 20 through an L-shaped plate 19, and the L-shaped plate 19 is slidably clamped in the side cavity 21. A second wedge block 23 is arranged inside the fixed block 5, and the second wedge block 23 contacts the first wedge block 20 through a plane.

[0041] The positioning assembly can lock the position of the second syringe 22 to prevent blood pressure from impacting the second syringe 22 and causing the second syringe 22 to directly drive the needle core 9 out of the device. When the needle core 9 needs to be actively removed, the index finger and thumb that pinch the control panel 1 are rotated toward the plane side so that the index finger and thumb press the pressure block 17 set on the outside of the control panel 1. At this time, the pressure block 17 will drive the L-shaped plate 19 and the first wedge block 20 to move downward and compress the elastic plate 18 at the same time. When the first wedge block 20 and the second wedge block 23 are misaligned, the second syringe 22 can be withdrawn backward. At this time, the squeezing of the pressure block 17 is stopped, and the pressure block 17 will be reset under the elastic force of the elastic plate 18.

[0042] like Figure 1 and Figure 2 As shown, the bottom end of the catheter 14 is connected to a transfer tube 15 , the bottom end of the first syringe 2 is provided with an observation box 6 , and the transfer tube 15 is clamped in the observation box 6 .

[0043] like Figure 1 , Figure 2 and Figure 4 As shown, a liquid inlet cavity 24 is provided at one end of the inner wall of the observation box 6, one end of the transfer tube 15 is connected to the liquid inlet cavity 24, and the liquid inlet cavity 24 is connected to a first observation cavity 28, which is provided on the side of the observation box 6 away from the needle tip 3.

[0044] like Figure 1 and Figure 4 As shown, a plurality of liquid guide plates 27 are arranged in the observation box 6, and all the liquid guide plates 27 are arranged in a direction perpendicular to the axis of the first syringe 2, and the liquid guide plates 27 are arranged in a staggered manner. An observation plate 26 is arranged on the side of the observation box 6 away from the needle tip 3, and the observation plate 26 is made of colorless and transparent material;

[0045] The staggered arrangement of the liquid guide plates 27 allows the blood to fill the inner space of the observation box 6 from left to right in sequence, thereby reducing the observation obstruction caused by the observation box 6 blocking the field of vision of medical staff.

[0046] like Figure 1 and Figure 4 As shown, an exhaust cavity 25 is provided at one end of the observation box 6 away from the first observation cavity 28, and an air valve is connected to the outer side of the exhaust cavity 25 through a soft rubber hose.

[0047] The specific usage and function of this embodiment are as follows:

[0048] The control component provided in the present invention can help medical staff to control and temporarily fix the needle tip 3. At the same time, adjusting the length of the needle tip 3 to 45 mm can improve the puncture success rate of patients with thick, obese and long backs of hands. When using the puncture needle for puncture, the puncture can be performed by pinching a pair of control panels 1 provided on the outside of the first syringe 2 with the thumb and index finger of the right hand. During the puncture process, the puncture direction and the bevel orientation of the needle tip 3 can be determined by the orientation mark 10 provided on the top of the first syringe 2. When the puncture is completed, arterial blood will be pumped to the second syringe 22 connected to the needle core 9 under the action of blood pressure, and gradually flow through the spiral plate 12 connected to the outside of the second syringe 22. Medical staff can determine whether the puncture needle posture and position need to be adjusted according to the blood flow rate. After the adjustment is completed, the blood in the second syringe 22 is pumped back into the patient's artery, and the needle core 9 is taken out. The rubber ring 13 and the liquid guide component provided at one end of the first syringe 2 can prevent the patient's blood from splashing, thereby minimizing equipment contamination.

[0049] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A novel distal radial artery puncture needle, characterized in that: The invention comprises a first syringe (2) and a needle tip (3), wherein the needle tip (3) is connected to the interior of the first syringe (2), a control component is arranged on the outside of the first syringe (2), and a liquid guide component is arranged inside the first syringe (2), the needle tip (3) is 45 mm long, and the inner and outer diameter specifications of the needle tip (3) are the same as those of a 20G puncture needle.

2. A novel distal radial artery puncture needle according to claim 1, characterized in that: The control assembly comprises a pair of connecting plates (4) symmetrically arranged on the outside of the first syringe (2), and the outsides of the two connecting plates (4) are connected to a control plate (1), and the control plate (1) is composed of a section of an arc-shaped plate and a straight plate at one end, and the control plate (1) is vertically connected to the connecting plate (4).

3. A novel distal radial artery puncture needle according to claim 2, characterized in that: The top end of the first syringe (2) is provided with an orientation mark (10), and the outer surface of the orientation mark (10) is colored.

4. A novel distal radial artery puncture needle according to claim 3, characterized in that: A needle core (9) is inserted into the needle tip (3), one end of the needle core (9) is connected to a second syringe (22), one end of the first syringe (2) close to the second syringe (22) is connected to a rubber ring (13), and the rubber ring (13) covers the outside of the needle core (9).

5. A novel distal radial artery puncture needle according to claim 4, characterized in that: A fixing column (11) is arranged inside the second syringe (22), a spiral plate (12) is connected to the outside of the fixing column (11), the outside of the spiral plate (12) is fixedly connected to the inner wall of the second syringe (22), and the second syringe (22) is made of a colorless and transparent material.

6. A novel distal radial artery puncture needle according to claim 5, characterized in that: The liquid guiding assembly comprises a partition (16) connected to the inner wall of the first syringe (2), the end of the partition (16) away from the needle tip (3) is connected to a catheter (14), and the needle core (9) passes through the catheter (14).

7. A novel distal radial artery puncture needle according to claim 6, characterized in that: The inner wall of the first syringe (2) is provided with a connecting block (8), a sealing cover (7) is hinged on the connecting block (8), and the sealing cover (7) has a tendency to rotate downward.

8. A novel distal radial artery puncture needle according to claim 7, characterized in that: The sealing cover (7) is provided with an adhesive film, and when the sealing cover (7) is in contact with the outer wall of the catheter (14), the adhesive film and the needle tip (3) are in the same straight line.

9. A novel distal radial artery puncture needle according to claim 8, characterized in that: The second syringe (22) is connected to the first syringe (2) via a positioning assembly, the positioning assembly comprising a pair of fixed blocks (5) arranged outside the second syringe (22), both of the fixed blocks (5) being provided with a side cavity (21), a pressing block (17) being arranged outside the control panel (1), the pressing block (17) being connected to the inner wall of the side cavity (21) via an elastic plate (18), the inner side of the pressing block (17) being connected to a first wedge block (20) via an L-shaped plate (19), the L-shaped plate (19) being slidably clamped in the side cavity (21). A second wedge block (23) is arranged inside the fixed block (5), the second wedge block (23) being in contact with the first wedge block (20) via a plane.

10. A novel distal radial artery puncture needle according to claim 9, characterized in that: The bottom end of the catheter (14) is connected to a transfer tube (15), the bottom end of the first syringe (2) is provided with an observation box (6), and the transfer tube (15) is clamped in the observation box (6).

11. A novel distal radial artery puncture needle according to claim 10, characterized in that: A liquid inlet cavity (24) is provided at one end of the inner wall of the observation box (6); one end of the transfer tube (15) is connected to the liquid inlet cavity (24); the liquid inlet cavity (24) is connected to a first observation cavity (28); and the first observation cavity (28) is provided on a side of the observation box (6) away from the needle tip (3).

12. A novel distal radial artery puncture needle according to claim 11, characterized in that: A plurality of liquid guide plates (27) are arranged in the observation box (6), and all of the liquid guide plates (27) are arranged in a direction perpendicular to the axis of the first syringe (2). The liquid guide plates (27) are arranged in a staggered manner. An observation plate (26) is arranged on the side of the observation box (6) away from the needle tip (3), and the observation plate (26) is made of a colorless and transparent material.

13. A novel distal radial artery puncture needle according to claim 12, characterized in that: An exhaust cavity (25) is provided at one end of the observation box (6) away from the first observation cavity (28), and an air valve is connected to the outside of the exhaust cavity (25) via a soft rubber hose.

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