Subcutaneous blood vessel puncture device based on ultrasonic guidance

Abstract

The invention relates to the technical field of medical devices, in particular to a subcutaneous blood vessel puncture device based on ultrasonic guidance. The problem that an existing ultrasonic guided puncture device is inconvenient to operate is solved. Comprising an ultrasonic detector probe, and the upper side of the ultrasonic detector probe is fixedly connected with a fixing rod; the rotating block is rotationally connected to the fixing rod, the rotating block is rotationally connected with a connecting rod, the connecting rod is rotationally connected with a mounting rod, and the mounting rod is provided with a puncture part; the limiting column is connected to the rotating block in a sliding mode, the fixing rod is provided with two grooves, the grooves are used for limiting the limiting column, and a first spring is arranged between the limiting column and the rotating block. The position of the puncture piece relative to the probe of the ultrasonic detector is determined through the matching of the limiting column and the groove in the fixing rod, and whether the puncture piece is aligned with the corresponding position or not does not need to be judged, so that the puncture operation is simplified, and the accuracy of the puncture position is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a subcutaneous blood vessel puncture device based on ultrasonic guidance. Background Art

[0002] A subcutaneous blood vessel puncture device based on ultrasonic guidance is an advanced medical device designed to improve the safety and success rate of the puncture process. Especially in the case of poor blood vessel conditions, this device can use ultrasonic technology to provide real-time images of subcutaneous structures, enabling medical staff to accurately identify the position and direction of blood vessels. Moreover, some advanced models of puncture devices include a color Doppler function to help distinguish arteries from veins and detect the blood flow direction, further improving the operation accuracy.

[0003] When using the existing ultrasonic-guided puncture device, one hand needs to hold the probe of the ultrasonic detector, and the other hand needs to hold the puncture piece. After finding the position of the blood vessel to be punctured through the probe of the ultrasonic detector, the blood vessel on the ultrasonic image is centered in the image. At this time, the probe of the ultrasonic detector is aligned with the blood vessel. Then, the puncture piece is inserted into the patient's skin until it reaches the blood vessel. During the above process, due to the lack of a positioning device in the existing device, it is impossible to ensure that the puncture piece is completely aligned with the blood vessel. Even if the plane where the axis of the puncture piece is located passes through the axis in the vertical direction of the probe of the ultrasonic detector, it may still deflect after entering the patient's body. In this case, it is necessary to re-puncture, which not only wastes time but also causes harm to the patient again. Summary of the Invention

[0004] In order to overcome the drawbacks mentioned in the above background art, the present invention provides a subcutaneous blood vessel puncture device based on ultrasonic guidance.

[0005] The technical solution is as follows: A subcutaneous blood vessel puncture device based on ultrasonic guidance, comprising: An ultrasonic detector probe, with a fixed rod fixedly connected to the upper side of the ultrasonic detector probe; A rotating block, rotatably connected to the fixed rod, the rotating block is rotatably connected to a connecting rod, the connecting rod is rotatably connected to a mounting rod, and a puncture piece is provided on the mounting rod; A limiting column, slidably connected to the rotating block, there are two grooves provided on the fixed rod for limiting the limiting column, and a first spring is provided between the limiting column and the rotating block.

[0006] Further explanation, the axes of the two grooves on the fixed rod are respectively perpendicular to the plane where the adjacent sides of the ultrasonic detector probe are located.

[0007] Further explanation, it further includes: An elastic sheet, fixedly connected to the mounting rod, and the elastic sheet is used to position the puncture piece.

[0008] Further description also includes: Mounting parts, there are several of them, all fixedly connected to the probe of the ultrasonic detector, and suction cups are fixedly connected to the mounting parts.

[0009] Further description also includes: The first housing is fixedly connected to the probe of the ultrasonic detector. A first sliding part penetrating through it is slidably connected to the first housing, and a second spring is arranged between the first sliding part and the first housing; The first one-way valve and the second one-way valve are both arranged in the first housing. All the suction cups are communicated with the first housing through the first one-way valve, and the second one-way valve communicates the first housing with the outside.

[0010] Further description also includes: There are two friction parts. The connecting rod is provided with two sliding grooves. The friction parts are slidably connected to the adjacent sliding grooves, and the two friction parts are respectively used for fixing the rotating block and the mounting rod.

[0011] Further description, a friction material is arranged on one side of the friction part away from the adjacent sliding groove.

[0012] Further description also includes: The second housing is fixedly connected to the mounting rod; The second sliding part is slidably connected to the second housing. A third spring is arranged between the second sliding part and the second housing. The second sliding part divides the second housing into a first cavity and a second cavity, and both sliding grooves are communicated with the first cavity.

[0013] Further description also includes: A hard tube is fixedly connected to the second housing. The hard tube is communicated with the second cavity, and the hard tube is communicated with a spray head; A liquid storage bin is fixedly connected to the mounting rod. The liquid storage bin is communicated with the second cavity, and a third one-way valve is arranged at the communication part between the liquid storage bin and the second cavity.

[0014] Further description, the axis of the spray head on the hard tube intersects with the axis of the puncture part.

[0015] Compared with the prior art, the present invention has the following advantages: By matching the limit post with the groove on the fixed rod, the present invention determines the position of the puncture part relative to the probe of the ultrasonic detector, eliminating the need to judge whether the puncture part is aligned with the corresponding position, thus simplifying the puncture operation and improving the accuracy of the puncture position.

[0016] Fix the probe of the ultrasonic detector through a suction cup, thereby reducing the shaking of the probe of the ultrasonic detector, maintaining the stability of the ultrasonic image, improving the puncture accuracy of medical staff, reducing mistakes, and reducing secondary injuries to patients.

[0017] When adjusting the position of the puncture member, separate the friction members from the rotating block and the mounting rod. When the position adjustment of the puncture member is completed, make the two friction members respectively press against the rotating block and the mounting rod, thereby fixing the rotating block, the connecting rod, and the mounting rod, making the device convenient to use and improving the puncture efficiency.

[0018] When the position adjustment of the puncture member is completed, make the disinfectant spray from the nozzle on the rigid tube to the puncture position to disinfect the patient's skin and prevent infection of the puncture wound. Brief Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural sectional view of the fixing rod and the rotating block of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the first housing and the first sliding member of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the chute and the friction member of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the second sliding member and the rigid tube of the present invention.

[0020] Marks in the drawings: 1: probe of the ultrasonic detector, 2: fixing rod, 3: rotating block, 4: connecting rod, 401: chute, 5: mounting rod, 51: elastic piece, 6: puncture member, 7: limiting column, 8: mounting member, 9: suction cup, 10: first housing, 11: first sliding member, 12: first one-way valve, 13: second one-way valve, 14: friction member, 15: second housing, 1501: first cavity, 1502: second cavity, 16: second sliding member, 17: rigid tube, 18: liquid storage chamber. Detailed Description of the Invention

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] A subcutaneous blood vessel puncture device based on ultrasonic guidance, such as Figure 1 , Figure 2 and Figure 5As shown in the figure, it includes: an ultrasonic detector probe 1, and a fixing rod 2 is fixedly connected to the upper side of the ultrasonic detector probe 1; a rotating block 3 is rotatably connected to the fixing rod 2, the rotating block 3 is rotatably connected to a connecting rod 4, the connecting rod 4 is rotatably connected to a mounting rod 5, and a puncturing member 6 is arranged on the mounting rod 5; a limiting column 7 is slidably connected to the rotating block 3, the fixing rod 2 is provided with two grooves for limiting the limiting column 7, and a first spring is arranged between the limiting column 7 and the rotating block 3. The axes of the two grooves on the fixing rod 2 are respectively perpendicular to the plane where the adjacent sides of the ultrasonic detector probe 1 are located.

[0023] In the above solution, it aims to position the puncturing member 6 so that the plane where the axis of the puncturing member 6 is located passes through the axis in the vertical direction of the ultrasonic detector probe 1. The ultrasonic detector probe 1 is electrically connected to the control terminal, so that the ultrasonic image of the ultrasonic detector probe 1 is displayed on the screen. The wire between the ultrasonic detector probe 1 and the control terminal passes through the fixing rod 2, and the axes of the ultrasonic detector probe 1 and the fixing rod 2 coincide. The two rotational connections of the rotating block 3, the connecting rod 4 and the mounting rod 5 provide a wider adjustable range for the puncturing member 6. The limiting column 7 is composed of a cylinder and a hemisphere. The hemisphere of the limiting column 7 fits with the adjacent groove on the fixing rod 2, and the depth of the groove on the fixing rod 2 is less than the radius of the hemisphere of the limiting column 7. The first spring between the limiting column 7 and the rotating block 3 is initially in a compressed state, which is used to provide a greater thrust for the limiting column 7, so as to prevent the rotating block 3 from shaking relative to the fixing rod 2.

[0024] Further, as Figure 5 shown, it further includes: an elastic piece 51, which is fixedly connected to the mounting rod 5, and the elastic piece 51 is used to position the puncturing member 6.

[0025] In the above solution, it aims to position the puncturing member 6 so that the position of the needle on the puncturing member 6 is fixed, and to prevent the needle on the puncturing member 6 from being too close to or too far from the patient's skin. After the puncturing member 6 squeezes the elastic piece 51 to deform, the elastic piece 51 squeezes the puncturing member 6, so that the puncturing member 6 will not slide due to its own gravity.

[0026] Further, as Figure 1 and Figure 3 shown, it further includes: a plurality of mounting members 8, all of which are fixedly connected to the ultrasonic detector probe 1, and a suction cup 9 is fixedly connected to the mounting member 8.

[0027] In the above solution, it aims to fix the ultrasonic detector probe 1 to prevent the ultrasonic detector probe 1 from being displaced during the operation of medical staff, resulting in puncture failure. The suction cup 9 is made of a soft material to reduce the discomfort of the patient.

[0028] Further, as Figure 1 and Figure 3As shown in the figure, it further includes: a first housing 10 fixedly connected to the probe 1 of the ultrasonic detector. A first sliding member 11 that penetrates the first housing 10 is slidably connected to the first housing 10, and a second spring is provided between the first sliding member 11 and the first housing 10. A first one-way valve 12 and a second one-way valve 13 are both provided in the first housing 10. All the suction cups 9 are communicated with the first housing 10 through the first one-way valve 12, and the second one-way valve 13 communicates the first housing 10 with the outside.

[0029] In the above solution, it aims to extract the air in the suction cups 9. The four suction cups 9 are communicated with each other through pipes and are jointly communicated with the first housing 10 through pipes. The first sliding member 11 is composed of a disc and a round rod. The disc of the first sliding member 11 is located inside the first housing 10, and the round rod of the first sliding member 11 passes through the first housing 10. A sealing member is provided between the first sliding member 11 and the first housing 10. The first one-way valve 12 allows gas to only enter the first housing 10 from the suction cups 9, and the second one-way valve 13 allows gas to only flow from the first housing 10 to the outside.

[0030] Further, as Figure 2 and Figure 4 shown in the figure, it further includes: two friction members 14. The connecting rod 4 is provided with two sliding grooves 401. The friction members 14 are slidably connected to the adjacent sliding grooves 401, and the two friction members 14 are respectively used to fix the rotating block 3 and the mounting rod 5. A friction material is provided on the side of the friction member 14 away from the adjacent sliding groove 401.

[0031] In the above solution, it aims to fix the rotating block 3, the connecting rod 4 and the mounting rod 5. The shape of the friction member 14 is similar to a barbell. The part of the friction member 14 located inside the sliding groove 401 is used to drive the whole to move, and the part of the friction member 14 located outside the sliding groove 401 is used to squeeze the connecting rod 4 or the mounting rod 5.

[0032] Further, as Figure 1 and Figure 5 shown in the figure, it further includes: a second housing 15 fixedly connected to the mounting rod 5; a second sliding member 16 slidably connected to the second housing 15. A third spring is provided between the second sliding member 16 and the second housing 15. The second sliding member 16 divides the second housing 15 into a first cavity 1501 and a second cavity 1502, and both sliding grooves 401 are communicated with the first cavity 1501.

[0033] In the above solution, it aims to drive the friction member 14. The first cavity 1501 and the sliding groove 401 are communicated through a pipe. The first cavity 1501, the sliding groove 401 and the pipe therebetween are all filled with a liquid for transmission, such as hydraulic oil. A sealing member is provided between the second sliding member 16 and the second housing 15. The second sliding member 16 is composed of a disc and a round rod, and the round rod of the second sliding member 16 passes through the second housing 15.

[0034] Workflow: When using this device, first determine whether the long side of the probe 1 of the ultrasonic detector is along the blood vessel direction or perpendicular to the blood vessel direction according to the need. Here, taking the case of being perpendicular to the blood vessel direction as an example, first rotate the rotating block 3. The rotating block 3 drives the connecting rod 4 to rotate, the connecting rod 4 drives the mounting rod 5 to rotate, and the mounting rod 5 drives the puncture member 6 to rotate. When the rotating block 3 rotates, the limiting post 7 is squeezed by the adjacent groove on the fixed rod 2. The limiting post 7 moves into the rotating block 3 and compresses the adjacent first spring. When the puncture member 6 rotates to the front of the probe 1 of the ultrasonic detector, the limiting post 7 is inserted into the groove on the front side of the fixed rod 2 under the action of the adjacent second spring. Then move the probe 1 of the ultrasonic detector to find the blood vessel that the patient needs to puncture. When the blood vessel image is located at the center of the image, stop moving the probe 1 of the ultrasonic detector. At this time, the vertical plane where the axis of the puncture member 6 is located passes through the blood vessel. Then press the first sliding member 11. The first sliding member 11 moves backward and compresses the adjacent second spring. At the same time, the gas in the suction cup 9 is inhaled into the first housing 10 through the first one-way valve 12, so that a negative pressure is formed in the suction cup 9 to adsorb on the patient's body surface, thereby fixing the probe 1 of the ultrasonic detector. After the fixing is completed, release the first sliding member 11. The first sliding member 11 resets under the action of the adjacent second spring and discharges the gas in the first housing 10 through the second one-way valve 13. Repeat the above operations several times until the probe 1 of the ultrasonic detector is fixed.

[0035] After the probe 1 of the ultrasonic detector is fixed, press the second housing 15 and the second sliding member 16 with two fingers respectively. The second sliding member 16 moves into the second housing 15 and compresses the adjacent third spring. At the same time, the liquid in the first cavity 1501 is pressed into the chute 401. The liquid in the chute 401 increases and pushes the friction member 14 to move, so that the two friction members 14 are separated from the rotating block 3 and the mounting rod 5 respectively. Then, the two fingers continue to maintain the pressing posture and move the mounting rod 5, so that the mounting rod 5 drives the puncture member 6 to move to a suitable position and angle. During the movement of the mounting rod 5, the mounting rod 5 rotates around its rotating connection with the connecting rod 4, and at the same time, the mounting rod 5 drives the connecting rod 4 to rotate around its rotating connection with the rotating block 3. Then, release the two fingers. The second sliding member 16 resets under the action of the adjacent third spring and drives the two friction members 14 to reset. Thus, the friction members 14 fix the relative positions of the rotating block 3, the connecting rod 4 and the mounting rod 5 through friction. Finally, the puncture member 6 can be pushed to move, so that the puncture member 6 pierces into the blood vessel. When the puncture member 6 moves, the puncture member 6 presses the elastic sheet 51, causing the elastic sheet 51 to deform. When the puncture member 6 is no longer pushed, the elastic sheet 51 fixes the puncture member 6 through friction. When the puncture is completed, the guide wire is inserted into the blood vessel through the puncture member 6, and then the puncture member 6 is withdrawn from the patient's body. When the puncture member 6 returns to its original position, the elastic sheet 51 restores itself under its own elasticity, and then the puncture member 6 is continued to be moved until the puncture member 6 is separated from the guide wire. Then, lift a corner of a suction cup 9. At this time, the suction cup 9 is communicated with the outside and loses negative pressure, and the ultrasonic detector probe 1 can be removed from the patient's body. Finally, the guide wire is separated from the mounting rod 5. Then, the device is disinfected. When used next time, a new puncture member 6 is installed on the mounting rod 5, and the above process is repeated for operation.

[0036] Further, as Figure 1 and Figure 5 shown, it further includes: a hard tube 17, fixedly connected to the second housing 15, the hard tube 17 is communicated with the second cavity 1502, and the hard tube 17 is communicated with a nozzle; a liquid storage bin 18, fixedly connected to the mounting rod 5, the liquid storage bin 18 is communicated with the second cavity 1502, and a third one-way valve is arranged at the communication place between the liquid storage bin 18 and the second cavity 1502. The axis of the nozzle on the hard tube 17 intersects with the axis of the puncture member 6.

[0037] In the above solution, it is intended to disinfect the patient's skin and the needle of the puncture member to prevent the punctured wound from being infected. The liquid storage bin 18 is filled with disinfectant. The third one-way valve at the communication place between the liquid storage bin 18 and the second cavity 1502 is used to make the disinfectant can only enter the second cavity 1502 from the liquid storage bin 18. The diameter of the hard tube 17 is small, and the liquid in the second cavity 1502 will not leak under the action of atmospheric pressure.

[0038] When the second sliding member 16 is pressed, a negative pressure is formed in the second cavity 1502, sucking the disinfectant liquid in the liquid storage bin 18 into the second cavity 1502. When the position adjustment of the puncture member 6 is completed and the second sliding member 16 resets, the second sliding member 16 presses the disinfectant liquid in the second cavity 1502 into the rigid tube 17, and then sprays it onto the skin of the patient to be punctured through the nozzle on the rigid tube 17, thereby performing disinfection to prevent wound infection.

[0039] The present invention provides an idea and method. There are many ways and means to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by existing technologies.

Claims

1. An ultrasound-guided subcutaneous blood vessel puncture device, characterized by comprising: An ultrasound detector probe (1), with a fixed rod (2) fixedly connected to the upper side of the ultrasound detector probe (1); A rotating block (3), rotatably connected to the fixed rod (2), the rotating block (3) is rotatably connected to a connecting rod (4), the connecting rod (4) is rotatably connected to a mounting rod (5), and a puncturing member (6) is arranged on the mounting rod (5); A limiting column (7), slidably connected to the rotating block (3), the fixed rod (2) is provided with two grooves for limiting the limiting column (7), and a first spring is arranged between the limiting column (7) and the rotating block (3).

2. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 1, characterized in that, The axes of the two grooves on the fixed rod (2) are respectively perpendicular to the plane where the adjacent sides of the ultrasound detector probe (1) are located.

3. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 1, wherein It further comprises: An elastic sheet (51), fixedly connected to the mounting rod (5), and the elastic sheet (51) is used for positioning the puncturing member (6).

4. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 1, characterized in that, It further comprises: Mounting members (8), several of them are all fixedly connected to the ultrasound detector probe (1), and suction cups (9) are fixedly connected to the mounting members (8).

5. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 4, wherein, It further comprises: A first housing (10), fixedly connected to the ultrasound detector probe (1), a first sliding member (11) that penetrates it is slidably connected to the first housing (10), and a second spring is arranged between the first sliding member (11) and the first housing (10); A first one-way valve (12) and a second one-way valve (13), both are arranged in the first housing (10), all the suction cups (9) are communicated with the first housing (10) through the first one-way valve (12), and the second one-way valve (13) communicates the first housing (10) with the outside.

6. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 1, wherein, It further comprises: Friction members (14), there are two of them, the connecting rod (4) is provided with two chutes (401), and the friction members (14) are slidably connected to the adjacent chutes (401), and the two friction members (14) are respectively used for fixing the rotating block (3) and the mounting rod (5).

7. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 6, wherein One side of the friction member (14) away from the adjacent chute (401) is provided with friction material.

8. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 7, characterized in that, It further comprises: A second housing (15), fixedly connected to the mounting rod (5); A second sliding member (16), slidably connected to the second housing (15), a third spring is arranged between the second sliding member (16) and the second housing (15), the second sliding member (16) divides the second housing (15) into a first cavity (1501) and a second cavity (1502), and both of the two chutes (401) are communicated with the first cavity (1501).

9. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 8, wherein, It further comprises: A hard tube (17), fixedly connected to the second housing (15), the hard tube (17) is communicated with the second cavity (1502), and the hard tube (17) is communicated with a spray head; A liquid storage bin (18), fixedly connected to the mounting rod (5), the liquid storage bin (18) is communicated with the second cavity (1502), and a third one-way valve is arranged at the communication place between the liquid storage bin (18) and the second cavity (1502).

10. The subcutaneous blood vessel puncture device based on ultrasonic guidance according to claim 9, characterized in that, The axis of the nozzle on the rigid tube (17) intersects with the axis of the puncturing member (6).

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