A vascular puncture auxiliary support

Abstract

The utility model provides a kind of vascular puncture auxiliary support, including support plate, and positioning plate, the support plate includes positioning part, and the embedding portion connected with the positioning part, the positioning point is equipped on the positioning part, the embedding portion is equipped with scale mark from the positioning part, the embedding portion is also equipped with multiple support structures for supporting the positioning plate along the scale mark, the positioning plate has the inclined surface of being inclined with the embedding portion, the inclined surface is equipped with the guide structure for puncture needle to pass through, the puncture needle passes through the guide structure, so that the puncture needle is preset angle and is stabbed into patient blood vessel.The vascular puncture auxiliary support in the utility model, using relatively simple structure can guide the stabbing position and angle of puncture needle, improve the puncture success rate, and reduce the damage to vascular tissue.

Description

Technical Field

[0001] This utility model relates to the field of surgical instruments, and in particular to a vascular puncture auxiliary stent. Background Technology

[0002] Peripherally inserted central venous catheter (PICC) is a common catheter implantation procedure with advantages such as ease of operation, long catheter indwelling time, and safety and effectiveness. It is now widely used in clinical practice.

[0003] In clinical practice, using ultrasound-guided stents to assist in PICC catheter insertion can significantly improve the success rate. However, only dedicated vascular puncture ultrasound probes are equipped with stent holders; ordinary ultrasound probes cannot accommodate stent holders. Many municipal hospitals lack dedicated vascular puncture ultrasound probes and can only use stentless ultrasound-guided puncture, resulting in significant damage to the blood vessels and surrounding tissues and a low success rate. Therefore, there is a need to design an independent vascular puncture stent that does not rely on ultrasound probes and is compatible with ordinary ultrasound instrument probes. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vascular puncture auxiliary stent, which aims to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A vascular puncture auxiliary stent includes a support plate and a positioning plate. The support plate includes a positioning part and an embedding part connected to the positioning part. The positioning part has a positioning point. The embedding part has a scale mark starting from the positioning part. The embedding part also has a plurality of support structures for supporting the positioning plate along the scale mark. The positioning plate has an inclined surface that is inclined to the embedding part. The inclined surface has a guide structure for a puncture needle to pass through. The puncture needle passes through the guide structure so that the puncture needle is inserted into the patient's blood vessel at a preset angle.

[0007] According to one aspect of the above technical solution, the embedded part is two oppositely arranged strip plates, the scale mark is located on the strip plates, and the scale is set from small to large starting from the positioning part.

[0008] According to one aspect of the above technical solution, the positioning plate also has a bottom surface, and an embedding angle is formed between the bottom surface and the inclined surface. The support structure includes an embedding groove opened on the strip plate. The embedding groove has an opening for the positioning plate to enter, a snap-in portion for the embedding angle to enter, and a support portion to support the bottom surface. The size of the opening is greater than or equal to the size of the bottom surface.

[0009] According to one aspect of the above technical solution, the embedding angle is 45°.

[0010] According to one aspect of the above technical solution, an embedding groove is provided on the strip plate at every 0.5cm interval along the scale markings.

[0011] According to one aspect of the above technical solution, the guide structure includes a guide tube disposed on the inclined surface, and the guide tube is provided with a guide hole for the puncture needle to pass through.

[0012] According to one aspect of the above technical solution, the cross-sectional dimensions of the guide hole decrease sequentially from top to bottom, and the guide hole is provided with a stress relief groove along the axial direction.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By setting up a support plate and a positioning plate, when a puncture operation is required, the positioning point on the positioning part is tightly pressed against the position of the ultrasound probe to ensure that the positioning point is closer to the detection point detected by the ultrasound probe, thus reducing errors. Then, according to the depth of the target point, the positioning plate is moved to the appropriate position of the scale mark and placed in the support structure. Then, the puncture needle is passed through the guide structure on the inclined surface of the positioning plate and inserted into the patient's blood vessel.

[0015] This invention employs a relatively simple structure that guides the insertion position and angle of the puncture needle, thereby improving the success rate of puncture and reducing damage to vascular tissue. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a vascular puncture auxiliary stent in one embodiment of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure at the central support plate;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure at the embedded slot;

[0019] Figure 4 for Figure 1 Schematic diagram of the structure at the center positioning plate;

[0020] Figure 5 for Figure 4 Schematic diagram of the top structure of the guide tube;

[0021] Figure 6 for Figure 4 Schematic diagram of the bottom structure of the guide tube;

[0022] Explanation of key component symbols:

[0023]

[0024]

[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1 to 6The image shows a vascular puncture auxiliary stent according to an embodiment of the present invention, including a support plate 10 and a positioning plate 20. The support plate 10 includes a positioning part 14 and an embedding part connected to the positioning part 14. The positioning part 14 is provided with a positioning point 13. The embedding part is provided with a scale mark 11 starting from the positioning part 14. The embedding part is also provided with a plurality of support structures for supporting the positioning plate 20 along the scale mark 11. The positioning plate 20 has an inclined surface 21 that is inclined to the embedding part. The inclined surface 21 is provided with a guide structure for the puncture needle to pass through. The puncture needle passes through the guide structure so that the puncture needle is inserted into the patient's blood vessel at a preset angle.

[0030] Understandably, by setting up a support plate 10 and a positioning plate 20, when a puncture operation is required, the positioning point 13 on the positioning part 14 is tightly pressed against the position of the ultrasound probe to ensure that the positioning point is closer to the detection point detected by the ultrasound probe, thereby reducing errors. Then, according to the depth of the target point, the positioning plate 20 is moved to a suitable position on the scale mark 11 and the positioning plate 20 is placed in the support structure. Then, the puncture needle passes through the guide structure on the inclined surface 21 of the positioning plate 20 and is inserted into the patient's blood vessel.

[0031] This invention employs a relatively simple structure that guides the insertion position and angle of the puncture needle, thereby improving the success rate of puncture and reducing damage to vascular tissue.

[0032] Specifically, in this embodiment, the embedding part is two oppositely arranged strip plates 15, the scale mark 11 is located on the strip plate 15, and the scale is set from small to large starting from the positioning part 14.

[0033] Understandably, there is space between the two plates 15 for the puncture needle to penetrate the skin. Then, the positioning plate 20 is placed on the two plates 15, and the puncture needle can enter the skin through the space between the two plates 15 via the guide structure.

[0034] Furthermore, the positioning plate 20 also has a bottom surface 23 and a third surface, the inclined surface 21 is located on the side away from the positioning point 13, an embedding angle 22 is formed between the bottom surface 23 and the third surface, and the support structure includes an embedding groove 12 opened on the strip plate 15. The embedding groove 12 has an opening 121 for the positioning plate 20 to enter, a snap-in portion 122 for the embedding angle 22 to enter, and a support portion 123 for supporting the bottom surface 23. The size of the opening 121 is greater than or equal to the size of the bottom surface 23.

[0035] Understandably, when it is necessary to fix the positioning plate 20 in the embedding groove 12, the bottom surface 23 faces the opening 121, and then it is moved downwards at an angle until the embedding groove 12 enters the locking part 122. When removing the positioning plate 20, the operation is reversed. It should be noted that since the puncture needle does not require much movement when piercing the skin, it is sufficient to embed the embedding angle 22 into the locking part 122. No other fixing measures are required, and the positioning plate 20 will not be displaced. The purpose of the inclined surface 21 being located on the side away from the positioning point 13 is that after the puncture needle is successfully punctured, it is necessary to reduce the angle to facilitate the insertion of the puncture guide wire. Therefore, the inclined surface 21 is set on the side away from the positioning point, so that the puncture needle has enough space to press down and reduce the angle, which is more convenient for subsequent operations.

[0036] Preferably, the angle between the inclined surface 21 and the bottom surface 23 is 45°; an embedding groove 12 is provided on the strip plate 15 at every 0.5cm interval along the scale markings 11.

[0037] Understandably, a 45° tilt is the best puncture angle, and an embedding position of 0.5 cm per interval can also meet the puncture accuracy. Since the positioning plate 20 is located in the embedding groove 12, and the bottom of the embedding groove 12 is still a little distance away from the human skin, the scale mark 11 needs to take this error into account and adjust the actual position of the scale mark 11. The projection of the position of each scale mark 11 on the support part 123 coincides with the junction of the inclined surface 21 and the bottom surface 23. The scale mark 11 can indicate the position of the puncture needle when it finally comes out of the guide structure.

[0038] Furthermore, the guide structure includes a guide tube 24 disposed on the inclined surface 21, and the guide tube 24 is provided with a guide hole 25 for the puncture needle to pass through; the cross-sectional size of the guide hole 25 decreases from top to bottom, and the guide hole 25 is provided with a stress relief groove 26 along the axial direction.

[0039] Understandably, the above setup allows the puncture needle to be inserted into the patient's skin at an angle. When the puncture needle first enters the guide hole 25, the cross-sectional size of the guide hole 25 is relatively large, allowing the puncture needle to pass through unimpeded. As the puncture needle continues to extend, the size of the guide hole 25 decreases, causing the puncture needle to get stuck in the guide hole 25. Gravity alone cannot allow the puncture needle to continue penetrating deeper, requiring manual control to continue inserting the puncture needle. The presence of the stress relief groove 26 causes the guide tube 24 to deform, giving the puncture needle a certain degree of damping when it pierces the skin, making the puncture needle more stable, improving the insertion accuracy, and preventing the puncture needle from slipping out of the hand and falling from the guide hole 25, thus preventing injury to the patient.

[0040] It should be noted that when the puncture needle is inserted through the guide hole 25, the direction of the force is towards the embedding angle 22, so the positioning plate 20 will not slide. Preferably, the support part 123 of the embedding groove 12 is provided with anti-slip texture 124 to prevent the positioning plate 20 from sliding due to gravity. The anti-slip texture can be made of a material with friction such as rubber.

[0041] In summary, the vascular puncture auxiliary stent in the above embodiments, with its relatively simple structure, can guide the insertion position and angle of the puncture needle, thereby improving the puncture success rate and reducing damage to vascular tissue.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vascular puncture-assisted stent, characterized in that, The device includes a support plate and a positioning plate. The support plate includes a positioning part and an embedded part connected to the positioning part. The positioning part has a positioning point. The embedded part has a scale mark starting from the positioning part. The embedded part also has a plurality of support structures for supporting the positioning plate along the scale mark. The positioning plate has an inclined surface that is inclined to the embedded part. The inclined surface has a guide structure for a puncture needle to pass through. The puncture needle passes through the guide structure so that the puncture needle is inserted into the patient's blood vessel at a preset angle.

2. The vascular puncture auxiliary stent according to claim 1, characterized in that, The embedded part consists of two opposing strip plates, and the scale markings are located on the strip plates, with the scales increasing from small to large starting from the positioning part.

3. The vascular puncture-assisted stent according to claim 2, characterized in that, The positioning plate also has a bottom surface and a third surface, the inclined surface is located on the side away from the positioning point, an embedding angle is formed between the bottom surface and the third surface, and the support structure includes an embedding groove opened on the strip plate. The embedding groove has an opening for the positioning plate to enter, a snap-fit ​​portion for the embedding angle to enter, and a support portion to support the bottom surface. The size of the opening is greater than or equal to the size of the bottom surface.

4. The vascular puncture-assisted stent according to claim 3, characterized in that, The angle between the inclined surface and the bottom surface is 45°.

5. The vascular puncture auxiliary stent according to claim 3, characterized in that, An embedding groove is provided at every 0.5 cm interval along the scale markings on the strip plate.

6. The vascular puncture auxiliary stent according to claim 1, characterized in that, The guide structure includes a guide tube disposed on the inclined surface, and the guide tube has a guide hole through which the puncture needle passes.

7. The vascular puncture-assisted stent according to claim 6, characterized in that, The cross-sectional dimensions of the guide holes decrease sequentially from top to bottom.

8. The vascular puncture-assisted stent according to claim 7, characterized in that, The guide hole is provided with a stress relief groove along the axial direction.

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