Vascular puncture device and intravascular ultrasonic puncture system

Abstract

The utility model provides a blood vessel puncture device and an intravascular ultrasonic puncture system. The blood vessel puncture device is used for guiding a puncture assembly to stretch out and comprises an insertion assembly, a detection part is arranged at the far end of an insertion body, an instrument outlet is formed in the side wall of the insertion body, and an instrument channel is formed in the insertion body and communicated with the instrument outlet. The far end of the puncture assembly penetrates out of the instrument outlet and extends to the target position, and the far end of the puncture assembly is located in the scanning area of the detection part. The included angle between the extending direction of the puncture assembly extending out of the instrument outlet and the central axis of the scanning area of the detection part is within a preset range. By means of the arrangement, the far end of the puncture assembly can work in the middle area of the scanning area, the risk that other tissue is accidentally injured due to the fact that the view field range is limited when puncture is conducted on the edge position of the scanning area is avoided, the accuracy and safety of surgical operation are effectively improved, and the surgical operation difficulty and the surgical operation time are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, specifically, a blood vessel puncture device and intravascular ultrasound puncture system. BACKGROUND

[0002] TIPS (transjugular intrahepatic portosystemic shunt) interventional operation is the most important method for treating acute variceal upper gastrointestinal hemorrhage, and usually selects puncture operation in the right internal jugular vein to construct a channel between the portal vein and the body vein by using a puncture needle, a catheter and a stent.

[0003] At present, in the process of TIPS interventional operation, DSA (digital subtraction angiography) perspective monitoring and extracorporeal ultrasound system are needed to monitor the position of the puncture needle, the catheter and the stent in the patient's body in real time. However, the operation of the extracorporeal ultrasound assisted TIPS interventional operation is difficult, and the above method is easily affected by external force or environmental factors, which causes the puncture needle and the ultrasonic imaging area to deviate, thereby easily increasing the risk of operation and the patient's body feeling is poor, and the operation time and the patient's X-ray radiation time are long. SUMMARY

[0004] In order to at least partially solve the problems existing in the prior art, according to the utility model, a blood vessel puncture device is provided for guiding the extension of a puncture assembly. The blood vessel puncture device includes an insertion assembly having an insertion body and a detection portion, the detection portion is arranged at the distal end of the insertion body, an instrument channel is formed in the insertion body, and an instrument outlet is formed at the distal end of the insertion body on the side where the detection portion is arranged. The instrument channel and the instrument outlet are in communication. The angle between the extension direction of the puncture assembly after penetrating into the instrument channel and extending out of the instrument outlet and the central axis of the scanning area of the detection portion is within a preset range.

[0005] The blood vessel puncture device of the utility model is used for guiding the extension of the puncture assembly. When the puncture assembly is inserted into the patient's body by the insertion assembly for puncture operation, the real-time scanning information fed back by the detection portion guides the distal end of the puncture assembly to extend to the target position, and the puncture operation is performed under the observation of the detection portion. Further, when the angle between the extension direction of the puncture assembly after penetrating into the instrument channel and extending out of the instrument outlet and the central axis of the scanning area of the detection portion is within a preset range, the distal end of the puncture assembly can work in the middle region of the scanning area. Therefore, the user can clearly and completely observe the target position to be punctured, avoid the risk of injuring other tissues due to limited field of view when puncturing at the edge position of the scanning area, effectively improve the accuracy and safety of the operation, and reduce the operation difficulty and operation time.

[0006] Exemplarily, a preset range of the included angle between the extending direction of the puncture assembly after the puncture assembly penetrates into the instrument channel and extends out of the instrument outlet and the central axis of the scanning area of the detection portion is greater than 0 degrees and less than or equal to 30 degrees.

[0007] Exemplarily, an inner wall of the instrument channel is provided with an arc portion near the instrument outlet, and the included angle between the extending direction of the puncture assembly after the puncture assembly extends out of the instrument outlet and the central axis of the insertion body is 10 degrees to 45 degrees through the arc portion.

[0008] Exemplarily, the insertion body further comprises a bending portion, the bending portion is arranged near the proximal end of the detection portion and the instrument outlet, and the bending portion is used to drive the distal end of the insertion body to perform a bending operation.

[0009] Exemplarily, the vascular puncture device further comprises a holding portion, the holding portion is connected to the proximal end of the insertion body, the holding portion has an instrument inlet in communication with the instrument channel, and the puncture assembly enters the instrument channel from the instrument inlet.

[0010] Exemplarily, the vascular puncture device further comprises a control portion, the control portion is located at the proximal end of the holding portion, and the control portion is used to control the bending portion to bend to a preset angle.

[0011] Exemplarily, the vascular puncture device further comprises a locking portion, the locking portion is connected to the control portion, and the locking portion acts on the control portion to lock the preset angle of the bending portion.

[0012] According to the utility model further provides a kind of intravascular ultrasound puncture system, including ultrasonic host, puncture assembly and as above vascular puncture device, ultrasonic host is electrically connected with vascular puncture device, detection portion is provided with ultrasonic probe.

[0013] Exemplarily, the puncture assembly comprises an outer sleeve, an inner sleeve and a guide wire, the outer sleeve is slidably sleeved outside the inner sleeve, and the guide wire is arranged in the inner sleeve. The guide wire is driven by the instrument outlet to extend out.

[0014] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, which can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the utility model more obvious, the following specific embodiments of the utility model are described. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other purposes, characteristics and advantages of the utility model will become more apparent through a more detailed description of the embodiments of the utility model in conjunction with the accompanying drawings. The drawings are used to provide a further understanding of the embodiments of the utility model and constitute a part of the specification, which is used to explain the utility model together with the embodiments of the utility model, and does not constitute a limitation on the utility model. In the drawings, the same reference numerals generally represent the same components or steps.

[0016] Figure 1 A structure diagram of a vascular puncture device is shown according to one example embodiment of the present application;

[0017] Figure 2 A front view of a distal end of an insertion assembly is shown according to one example embodiment of the present application;

[0018] Figure 3 A perspective view of a distal end of an insertion assembly is shown according to one example embodiment of the present application;

[0019] Figure 4 A cross-sectional view of a distal end of an insertion assembly is shown according to one example embodiment of the present application;

[0020] Figure 5 A schematic diagram of a vascular puncture operation is shown according to one example embodiment of the present application;

[0021] Figure 6 A cross-sectional view of a distal end of a puncture assembly is shown according to one example embodiment of the present application;

[0022] Figure 7 A structure diagram of a holding portion is shown according to one example embodiment of the present application;

[0023] Figure 8 A structure diagram of an intravascular ultrasound puncture system is shown according to one example embodiment of the present application.

[0024] In the figures, the components represented by the reference numerals are:

[0025] 1, insertion assembly; 11, insertion body; 12, probe portion; 121, apex; 13, instrument outlet; 14, instrument channel; 15, arcuate portion; 16, curved portion; 2, puncture assembly; 21, outer cannula; 22, inner cannula; 23, guide wire; 3, target location; 4, holding portion; 41, instrument inlet; 5, control portion; 6, locking portion; 7, ultrasound main machine; 8, venous blood vessel; 9, first blood vessel; 10, second blood vessel. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more obvious, the example embodiments according to the utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments of the utility model, and it should be understood that the utility model is not limited by the example embodiments described herein. Based on the utility model embodiments described in the utility model, all other embodiments obtained by those skilled in the art without creative labor should fall within the protection scope of the utility model.

[0027] In the following description, a large number of details are provided so as to enable a thorough understanding of the utility model. However, those skilled in the art can understand that the following description only exemplarily shows the preferred embodiments of the utility model, and the utility model can be implemented without one or more such details. In addition, in order to avoid confusion with the utility model, some technical features known in the art are not described in detail.

[0028] In order to thoroughly understand the embodiments of the utility model, detailed structures will be proposed in the following description. Obviously, the implementation of the embodiments of the utility model is not limited to the special details familiar to those skilled in the art. The preferred embodiments of the utility model are described as follows, however, in addition to these detailed descriptions, the utility model can also have other embodiments.

[0029] One embodiment of the utility model provides a blood vessel puncture device, which can be used in the medical field. The following will introduce a blood vessel puncture device according to the embodiments of the utility model in detail in combination with the drawings.

[0030] In combination with the drawings Figure 1 , Figure 2 , Figure 3 And Figure 4The vascular puncture device is used to guide the extension of the puncture assembly 2 and includes an insertion assembly 1 having an insertion body 11 and a detector 12. The detector 12 is disposed at the distal end of the insertion body 11. An instrument channel 14 is formed within the insertion body 11. An instrument outlet 13 is formed at the distal end of the insertion body 11 on the side where the detector 12 is disposed. The instrument channel 14 is connected to the instrument outlet 13. The angle between the extension direction of the puncture assembly 2 after entering the instrument channel 14 and extending from the instrument outlet 13 and the central axis of the scanning area of ​​the detector 12 is within a predetermined range. When performing a puncture operation at the target location 3, the vascular puncture device must be used in conjunction with the puncture assembly 2. The puncture assembly 2 is inserted into the instrument channel 14, and the distal end of the puncture assembly 2 is passed through the instrument outlet 13 and extends to the target location 3, with the distal end of the puncture assembly 2 located within the scanning area of ​​the detector 12. It should be noted that the puncture assembly 2 referred to herein can be other medical devices that need to be inserted into the body through the instrument channel 14, such as a puncture needle, and is not limited to this.

[0031] like Figure 5 As shown, the vascular puncture device can connect two blood vessels in the patient's body and establish a pathway between the two. During specific use, it is first necessary to move the insertion component 1 along the patient's venous blood vessel 8 to the first blood vessel 9 under X-ray irradiation, and then detect the position of the second blood vessel 10 through the detection unit 12 and make the target position 3 to be punctured be located in the middle area of ​​the ultrasonic scanning range. After the puncture component 2 in the instrument channel 14 is passed out from the instrument outlet 13, it punctures the first blood vessel 9 and the second blood vessel 10 respectively, and then extends to the target position 3 by connecting the above two blood vessels to perform the puncture operation. During this process, the detection unit 12 emits and receives ultrasonic signals, and transmits the received ultrasonic signals to the display end to monitor the puncture operation performed in the patient's body in real time.

[0032] Since the above-mentioned vascular puncture device is provided with a detection part 12 at the distal end of the insertion component 1, and the puncture component 2 extends from the instrument outlet 13 of the insertion component 1, it can be ensured that the extended puncture component 2 can perform the puncture operation within the scanning range of the detection part 12, avoiding the problem of deviation between the puncture needle and the ultrasonic imaging area when using in vitro ultrasonic detection, thereby improving the simplicity and safety of the surgical operation.

[0033] The distal end may be represented as the side away from the user, and the proximal end may be represented as the side close to the user. The target position 3 may be represented as the position when the distal end of the puncture assembly 2 punctures the second blood vessel 10 .

[0034] like Figure 4As shown, the first included angle (a) is formed between the extending direction of the puncture assembly 2 after penetrating into the instrument channel 14 and extending out of the instrument outlet 13 and the outer edge of the insertion body 11, and it can be understood that the first included angle (a) determines the extending direction of the distal end of the puncture assembly 2, and the second included angle (b) is formed between the central axis of the scanning area of the detection part 12 and the outer edge of the insertion body 11, and the second included angle (b) determines the deflection angle of the detection part 12. When the included angle between the extending direction of the puncture assembly 2 after penetrating into the instrument channel 14 and extending out of the instrument outlet 13 and the central axis of the scanning area of the detection part 12 is within a predetermined range, that is, the difference between the second included angle (b) and the first included angle (a) meets the predetermined threshold, the distal end of the puncture assembly 2 can be located in the middle area of the scanning area, so that the operator can observe the target position 3 to be punctured and the surrounding situation during the puncture operation, greatly improving the safety and reliability of the puncture operation.

[0035] The above-mentioned middle area of the scanning area is a range area that can quickly and accurately puncture for the user, that is, a range area where the target position 3 to be punctured is located, and it can be understood as a position within the scanning area at a certain distance from the detection part 12 and relatively close to the central axis of the scanning area of the detection part 12, such as Figure 4 As shown, the shaded area (A) in the figure can represent the middle area of the scanning area, and generally, in order to shorten the adjustment distance of the puncture assembly 2 extending to the target position 3 for the user to have a larger observation field of view, the target position 3 to be punctured is usually positioned within a range of 15-45 mm from the vertex 121 of the detection part 12, so the upper and lower boundaries of the middle area of the scanning area are generally 15 mm and 45 mm away from the detection part 12. There is a certain observation field of view between the middle area of the scanning area and the edge of the scanning area, so that the user can observe other tissues near the target position 3 when using the vascular puncture device, effectively reducing the risk in the puncture process.

[0036] The vascular puncture device of the utility model is used for guiding the extension of the puncture assembly 2, and when the puncture assembly 2 is inserted into the patient's body by the insertion assembly 1 for puncture operation, the distal end of the puncture assembly 2 is guided to the target position 3 by the real-time scanning information fed back by the detection part 12, and the puncture operation is performed under the observation of the detection part 12. Moreover, when the included angle between the extending direction of the puncture assembly 2 after penetrating into the instrument channel 14 and extending out of the instrument outlet 13 and the central axis of the scanning area of the detection part 12 is within a predetermined range, the distal end of the puncture assembly 2 can work in the middle area of the scanning area, so that the user can clearly and completely observe the target position 3 to be punctured, avoid the risk of injuring other tissues due to limited field of view when puncturing at the edge of the scanning area, effectively improve the accuracy and safety of the operation, and reduce the operation difficulty and operation time.

[0037] In some embodiments, the preset range of the included angle between the extension direction of the puncture assembly 2 after the puncture assembly 2 penetrates into the instrument channel 14 and extends out of the instrument outlet 13 and the central axis of the scanning area of the detection part 12 is greater than 0 degrees and less than or equal to 30 degrees (°). For example, 10°, 15°, 20°, 30°.

[0038] In the above embodiments, by presetting the range to limit the relative size of the first included angle and the second included angle, the distal end of the puncture assembly 2 can be stably arranged in the middle region of the scanning area, so that the user can observe the situation around the distal end of the puncture assembly 2 and the target position 3 to be punctured in real time during the puncture process, effectively improving the stability and safety of the vascular puncture device.

[0039] In some embodiments, referring to Figure 4 , the inner wall of the instrument channel 14 is provided with an arc-shaped part 15 near the instrument outlet 13. The arc-shaped part 15 can guide the included angle between the extension direction of the puncture assembly 2 after the puncture assembly 2 extends out of the instrument outlet 13 and the central axis of the insertion body 11 to be 10 degrees to 45 degrees, that is, the first included angle is 135 degrees to 170 degrees (°), for example, 135°, 145°, 150°, 160°, 170°.

[0040] Further, the puncture assembly 2 can deform under stress. When the puncture assembly 2 moves in the instrument channel 14, the puncture assembly 2 can deform along the shape of the instrument channel 14. The arc-shaped part 15 on the inner wall of the insertion body 11 can apply a force to the puncture assembly 2 to form a first included angle between the central axis of the distal end of the puncture assembly 2 and the outer edge of the insertion body 11 when the puncture assembly 2 extends out of the instrument outlet 13. In order to make the puncture assembly 2 have a deeper puncture depth, the smaller the first included angle (α) is, the better, that is, the extension direction of the puncture assembly 2 is inclined away from the detection part 12. However, if the first included angle (α) is too small, the distal end of the puncture assembly 2 after extension may not fall within the scanning area, resulting in that the detection part 12 cannot detect the puncture assembly 2, or the distal end of the puncture assembly 2 after extension does not fall into the middle region of the scanning area, that is, the puncture operation needs to be performed at the edge position of the scanning area, which will result in that the user cannot completely observe the overall situation of the surrounding tissue of the target position 3 to be punctured, and normal surrounding tissue is easily damaged.

[0041] By changing the shape or position of the arc-shaped part 15, the angle value of the first included angle can be changed to adapt to the deflection angle of different detection parts 12. In this way, the practicability of the vascular puncture device can be effectively improved.

[0042] In the above embodiment, the arc-shaped portion 15 can make the puncture assembly 2 have a first included angle, so that the movement of the distal end of the puncture assembly 2 to the middle region of the scanning region can be controlled to ensure that the user can clearly and completely observe the specific position of the puncture assembly 2, thereby effectively improving the reliability of the vascular puncture device.

[0043] In some embodiments, in combination with the above description Figure 3 and Figure 4 , the insertion body 11 further comprises a bending portion 16 arranged close to the proximal end of the detection portion 12 and the instrument outlet 13, and the bending portion 16 is used to drive the distal end of the insertion body 11 to bend.

[0044] The bending portion 16 can drive the distal end of the insertion body 11 to bend along the curve of the venous vessel 8 of the patient, so that the distal end of the insertion assembly 1 can accurately pass through the narrow or complex blood vessel, greatly reducing the damage to the inner wall of the blood vessel and improving the passability of the insertion assembly 1. When performing lesion detection in the patient's body, the user can adjust the deflection angle of the detection portion 12 by controlling the bending angle of the bending portion 16 to achieve scanning detection in different directions.

[0045] In the above embodiment, the bending portion 16 can make the distal end of the insertion assembly 1 have strong flexibility and adaptability, which can greatly improve the success rate of the vascular puncture operation in the face of complex blood vessel structures and improve the universality of the vascular puncture device.

[0046] In some embodiments, in combination with the above description Figure 7 , the vascular puncture device further comprises a holding portion 4 connected to the proximal end of the insertion body 11, the holding portion 4 has an instrument inlet 41 in communication with the instrument channel 14, and the puncture assembly 2 enters the instrument channel 14 through the instrument inlet 41.

[0047] The inside of the holding portion 4 can have a hollow cavity in communication with the instrument channel 14 inside the insertion body 11, and the instrument inlet 41 can be arranged on the side wall of the holding portion 4. When the insertion assembly 1 moves to the first blood vessel 9, the puncture assembly 2 can enter the hollow cavity through the instrument inlet 41 of the holding portion 4 and then pass out of the instrument outlet 13 to reach the first blood vessel 9.

[0048] The instrument inlet 41 can be connected and fixed with the puncture assembly 2 through a luer joint. The luer joint can ensure the tightness of the connection between the instrument inlet 41 and the puncture assembly 2, thereby reducing the risk of leakage.

[0049] Optionally, the instrument inlet 41 can also be provided with a disposable connector biopsy valve, which is connected and fixed with the puncture assembly 2 through buckling.

[0050] The holding part 4 can facilitate the user to hold and control the blood vessel puncture device, the user can firmly grasp the insertion assembly 1 and ensure the stability of the insertion assembly 1 during the puncture process, and effectively reduce the risk of unnecessary damage during the blood vessel puncture process.

[0051] In the above embodiment, the holding part 4 can provide the user with the required stability and directionality during operation, effectively improving the success rate and safety of the blood vessel puncture operation.

[0052] In some embodiments, referring to Figure 7 , the blood vessel puncture device further comprises a control part 5, the control part 5 is located at the proximal end of the holding part 4, and the control part 5 is used to control the bending part 16 to bend to a preset angle.

[0053] The control part 5 can control the angle change of the bending part 16, and the user can rotate the control part 5 to make the bending part 16 rotate synchronously.

[0054] The control part 5 can also control the blood vessel puncture device to switch modes, amplify gains, or take screenshots and other different functions. The control part 5 can be multiple, and the multiple control parts 5 can correspond to the above functions respectively, so that the operator can meet different use requirements.

[0055] In the above embodiment, the bending part 16 can be controlled to rotate a preset angle through the control part 5, so that the puncture assembly 2 can accurately reach the target position 3 to be punctured, effectively improving the flexibility and accuracy of the blood vessel puncture device.

[0056] In some embodiments, referring to Figure 7 , the blood vessel puncture device further comprises a locking part 6, the locking part 6 is connected with the control part 5, and the locking part 6 acts on the control part 5 to lock the preset angle of the bending part 16.

[0057] The locking part 6 can lock and unlock the angle of the bending part 16, so that the user can diagnose and treat the patient under the condition of fixing the bending angle, thereby avoiding the situation that accidental movement occurs due to unstable hands or inaccurate operation, and helping to improve the accuracy and safety of the blood vessel puncture operation.

[0058] In the above embodiment, the locking part 6 can ensure the stability and operation accuracy during the blood vessel puncture operation, and further improve the reliability of the blood vessel puncture device.

[0059] In an embodiment of the utility model, a blood vessel intravenous ultrasound puncture system is also provided, referring to Figure 2 and Figure 8 , comprising an ultrasonic host 7 and a blood vessel puncture device as described above, the ultrasonic host 7 is electrically connected with the blood vessel puncture device, and the detection part 12 is provided with an ultrasonic probe.

[0060] The blood vessel puncture device can transmit the collected image information to the ultrasonic host 7 and present on the display screen of the ultrasonic host 7 to help the user to obtain the examination image in the patient's body.

[0061] The blood vessel puncture device has the beneficial effects as described above, and the intravascular ultrasound puncture system comprising the blood vessel puncture device also has the beneficial effects as described above.

[0062] In some embodiments, referring to Figure 6 The puncture assembly 2 comprises an outer cannula 21, an inner cannula 22 and a guide wire 23, the outer cannula 21 is sleeved on the outer side of the inner cannula 22, the guide wire 23 is arranged in the inner cannula 22, and the guide wire 23 is driven by the inner cannula 22 to pass through the instrument outlet 13 to form a distal end of the puncture assembly 2.

[0063] The outer cannula 21 is sleeved on the outer side of the inner cannula 22 and the guide wire 23 to effectively protect the inner cannula 22 and the guide wire 23, and effectively avoid the bending, breaking and other situations caused by stress during operation or movement in the instrument channel 14.

[0064] The distal end of the inner cannula 22 is configured in a sharp shape, and the inner cannula 22 in the sharp shape can effectively pierce the first blood vessel 9 and the second blood vessel 10. The inner cannula 22 has a hollow cavity, and the guide wire 23 is arranged in the hollow cavity. When the inner cannula 22 is inserted into the second blood vessel 10 from the first blood vessel 9, the guide wire 23 can be synchronously brought into the second blood vessel 10. When the insertion assembly 1, the outer cannula 21 and the inner cannula 22 are sequentially separated from the blood vessel of the patient, the guide wire 23 can be left in the blood vessel and establish a connection between the first blood vessel 9 and the second blood vessel 10.

[0065] When the insertion assembly 1, the outer cannula 21 and the inner cannula 22 are sequentially separated from the blood vessel of the patient, the support such as a stent and a balloon can be moved to the target position 3 along the guide wire 23, and then the guide wire 23 is pulled out to complete the establishment of the passage between the first blood vessel 9 and the second blood vessel 10.

[0066] In the above embodiment, by means of the outer cannula 21 and the inner cannula 22, the guide wire 23 can be used to establish a connection between the first blood vessel 9 and the second blood vessel 10, and play a guiding role for the subsequent support, which significantly improves the success rate and safety of the blood vessel puncture device.

[0067] While example embodiments have been described herein with reference to the attached drawings, it is to be understood that the example embodiments are merely exemplary and that it is intended that the scope of the present application be limited solely by the appended claims. Various modifications and alterations to the example embodiments described herein will become apparent to those skilled in the art from the preceding description. It is intended that all such modifications and alterations be considered equivalents thereof.

[0068] For ease of description, the term "connected" can be used herein to describe one or more elements or features being connected to other elements or features. It should be understood that "connected" can include direct connection or indirect connection via other elements or features, and it is intended to include all such cases.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, components, elements, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, components, elements, and / or groups thereof.

[0070] It should be noted that the terms "first", "second", and the like, herein do not necessarily have an either chronological or spatial relation to each other, but are used merely to distinguish between two separate elements or instances, which might suitably be described without recourse to such terms. It is to be understood that the use of the terms "first", "second", and the like, herein is merely intended to differentiate one element or instance from another, but not to imply that a sequence or order is implied in their use or otherwise.

[0071] The present application has been described with reference to the above embodiments, but it should be understood that the above embodiments are merely for the purpose of illustration and explanation, and are not intended to limit the present application to the scope of the described embodiments. Furthermore, those skilled in the art can understand that the present application is not limited to the above embodiments, and that various modifications and alterations can be made to the present application in accordance with the teachings of the present application, and that such modifications and alterations fall within the scope of the present application as claimed. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vascular puncture device for guiding the extension of a puncture assembly, characterized by, The blood vessel puncture device comprises: an insertion assembly having an insertion body and a probe part, the probe part being arranged at a distal end of the insertion body, an instrument channel being formed inside the insertion body, an instrument outlet being formed at the distal end of the insertion body on the side where the probe part is arranged, the instrument channel being in communication with the instrument outlet; wherein an included angle between an extension direction of the puncture assembly after the puncture assembly extends into the instrument channel and out of the instrument outlet and a central axis of a scanning area of the probe part is within a preset range.

2. The vascular access device of claim 1, wherein, The preset range is greater than 0 degrees and less than or equal to 30 degrees.

3. The vascular access device of claim 1, wherein, An inner wall of the instrument channel is provided with an arc-shaped part near the instrument outlet, and an included angle between an extension direction of the puncture assembly after the puncture assembly extends out of the instrument outlet and a central axis of the insertion body is 10 degrees to 45 degrees through the arc-shaped part.

4. The vascular access device of claim 1, wherein, The insertion body further comprises a bending part arranged near a proximal end of the probe part and the instrument outlet, for driving the distal end of the insertion body to bend.

5. The vascular access device of claim 4, wherein, The blood vessel puncture device further comprises a holding part connected to a proximal end of the insertion body, the holding part having an instrument inlet in communication with the instrument channel, the puncture assembly entering the instrument channel from the instrument inlet.

6. The vascular access device of claim 5, wherein, The blood vessel puncture device further comprises a control part at a proximal end of the holding part, the control part being used to control the bending part to bend to a preset angle.

7. The blood vessel puncture device according to claim 6, characterized in that: The blood vessel puncture device further comprises a locking part connected to the control part, the locking part acting on the control part to lock the preset angle of the bending part.

8. An intravascular ultrasound puncture system, comprising: The blood vessel puncture device comprises an ultrasonic host, a puncture assembly and the blood vessel puncture device according to any one of claims 1 to 7, the ultrasonic host being electrically connected to the blood vessel puncture device, the probe part being provided with an ultrasonic probe.

9. The intravascular ultrasound puncture system of claim 8, wherein, The puncture assembly comprises an outer cannula, an inner cannula and a guide wire, the outer cannula being slidably sleeved outside the inner cannula, the guide wire being arranged in the inner cannula, the guide wire being guided by the inner cannula to extend out of the instrument outlet.

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