Auxiliary device for artery puncture under ultrasonic guidance
By using an ultrasound-guided arterial puncture auxiliary device, which incorporates a ferrule and a split-type guide sheath, the problem of inaccurate puncture in traditional arterial puncture techniques has been solved, achieving higher puncture accuracy and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional arterial puncture techniques lack visual guidance, making puncture difficult and posing a risk of blind puncture, especially in cases of unclear anatomical location, infection, masses, extremely small blood vessels, or thrombosis within the blood vessel, which can easily lead to inaccurate puncture and patient injury.
An auxiliary device for ultrasound-guided arterial puncture was designed, including a ferrule and a split-type guide sheath. The ultrasound probe is fixed by the ferrule, and the guide sheath forms a specific angle with the ultrasound probe to ensure the stability of the ultrasound emission direction. The guide sheath can be flexibly adjusted by a strut and a fixing lug, thereby improving the accuracy of puncture.
It improves the accuracy and safety of ultrasound-guided arterial puncture, reduces the risk of blind puncture, and minimizes harm to patients.
Smart Images
Figure CN224112739U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, specifically to an auxiliary device for ultrasound-guided arterial puncture. Background Technology
[0002] Traditional arterial puncture techniques lack visual guidance and rely primarily on anatomical landmarks to locate blood vessels. However, blind puncture carries a higher risk when anatomical location is unclear, there is infection or a mass at the puncture site, puncture is difficult in extremely small vessels, or there is a thrombus within the vessel. Although ultrasound-guided puncture is now used clinically, providing clear visualization of the vascular structure and surrounding nerves and muscles, relying solely on the doctor's experience during actual practice can still lead to inaccurate punctures. Furthermore, improper needle insertion angles can cause injury to the patient. Utility Model Content
[0003] To overcome the above-mentioned shortcomings in the prior art, this utility model provides an auxiliary device for ultrasound-guided arterial puncture that provides stable ultrasound emission direction and high puncture accuracy during use.
[0004] The technical solution of this utility model is as follows:
[0005] An auxiliary device for ultrasound-guided arterial puncture includes a ferrule, the ferrule including interlocking cards, each card having a groove on its inner wall that fits the outer peripheral surface of an ultrasound probe, and the end face of the ferrule that contacts the body surface being beveled, such that the ultrasound emission direction is at an acute angle to the body surface.
[0006] A card has a fixing ear near the outer wall of the body surface, and
[0007] The guide sheath has a through hole along its axis for the puncture needle to pass through. The guide sheath is split and includes two sheath bodies that are attracted to each other. A support rod is provided on the outer wall of each sheath body. The guide sheath is hinged to the fixing lug via the support rod. The plane formed by the rotation of the guide sheath is perpendicular to the plane in which the ultrasound probe emits light, and the guide sheath and the plane in which the ultrasound emits light are located are at an angle of 110°-140°.
[0008] Preferably, the outer walls of the two sheaths are provided with pry bars, and pinching the two pry bars causes the two sheaths to detach.
[0009] In any of the above embodiments, it is preferred that the two sheaths have a centering structure that cooperates with each other on the side where they are in contact.
[0010] In any of the above embodiments, it is preferred that a slider is slidably connected to the fixed ear, and the guide sheath and the slider are rotatably connected.
[0011] In any of the above embodiments, it is preferred that the slider is made of polytetrafluoroethylene.
[0012] In any of the above embodiments, it is preferred that each of the cards is provided with two parallel guide plates, the upper and lower surfaces of the two guide plates are in contact with the ultrasound probe and the body surface, respectively, and the plane formed by the rotation of the guide sheath is perpendicular to the plane where the two guide plates are located and is equidistant from the two guide plates.
[0013] In any of the above embodiments, it is preferred that the bottom of any of the cards is provided with a coupling sheet, the coupling sheet comprising a PE film and the PE film being filled with a coupling agent.
[0014] In any of the above embodiments, it is preferred that the two guide plates are disposed within the coupling plate.
[0015] In any of the above embodiments, it is preferred that each of the slots and the ultrasonic probe contacting each other is provided with a gasket.
[0016] In any of the above solutions, it is preferred that the gasket is made of silicone or rubber.
[0017] The auxiliary device for ultrasound-guided arterial puncture of this invention can effectively fix the ultrasound probe and ensure the stability of the ultrasound emission direction by means of interlocking clips and a slot that matches the outer peripheral surface of the ultrasound probe.
[0018] The guide sheath is designed in two separate parts that are attracted to each other, making it easy to install and remove. It is also hinged to the fixing lug via a support rod, allowing for flexible adjustment of the position and angle of the guide sheath to improve puncture accuracy. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of an embodiment of the ultrasound-guided arterial puncture auxiliary device of this utility model.
[0020] Figure 2 This is a schematic diagram of an embodiment of the auxiliary device for ultrasound-guided arterial puncture of this utility model, showing the cooperation between the two cards of the ferrule and the ultrasound probe.
[0021] Figure 3 This is a schematic diagram of a preferred embodiment of the guide sheath of the ultrasound-guided arterial puncture auxiliary device of this utility model.
[0022] Figure 4 This is a schematic diagram of an optional embodiment of the ultrasound-guided arterial puncture auxiliary device of the present invention, showing the cooperation between the guide sheath and the fixation ear.
[0023] Figure 5 This is a schematic diagram of another optional embodiment of the auxiliary device for ultrasound-guided arterial puncture of this utility model, showing the cooperation between the guide sheath and the fixation ear.
[0024] Figure 6 This is a schematic diagram of an embodiment of the auxiliary device for ultrasound-guided arterial puncture of this utility model, showing the cooperation of the guide plate, card, and ultrasound probe.
[0025] Figure 7 This is a schematic diagram of an embodiment of the auxiliary device for ultrasound-guided arterial puncture of this utility model, showing the coordination of the coupling plate, card, and ultrasound probe.
[0026] Figure 8 This is a side view diagram of the auxiliary device for ultrasound-guided arterial puncture of this utility model during use.
[0027] Explanation of the labels in the diagram:
[0028] 101-Sheath; 102-Fixing ear; 103-Ultrasonic probe; 104-Card; 105-Connecting sleeve; 106-Card slot; 107-Connecting plate; 108-Paddle; 109-Support rod; 110-Slider; 111-Guide plate; 112-Coupled plate. Detailed Implementation
[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] In the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] Example 1:
[0032] like Figure 1 , 2In the embodiments shown in 3 and 8, the sleeve is used to hold the ultrasound probe 103. Specifically, the sleeve includes two cards 104, and each card 104 has a matching connecting sleeve 105 on one side. The two cards 104 are hinged together by a pin through the connecting sleeve 105 on their respective bodies. One option for connecting the other side of the two cards 104 is by snap-fit connection, and another option is that the other side of the two cards 104 is provided with a connecting plate 107, each connecting plate 107 is provided with a mounting hole, and the other side of the two cards 104 is fixed by bolt connection through each connecting plate 107.
[0033] The slots 106 located on the inner walls of the two cards 104 are used to hold the ultrasonic probe 103. To prevent the slots 106 from scratching the surface of the ultrasonic probe 103, a gasket is provided at the contact point between the slots 106 and the ultrasonic probe 103. The gasket is made of silicone or rubber.
[0034] To ensure that the ultrasonic probe 103 is installed in the sleeve, the ultrasonic emission direction and the body surface form an acute angle, so that the tip of the guide needle can be visualized in the ultrasonic image, the end face of the sleeve that contacts the body surface is set at an angle after the two cards 104 are combined.
[0035] A fixing lug 102, located on the outer wall of a card 104 near the body surface, is used to install a guide sheath. During use, the guide sheath constrains the guide needle, causing it to insert into the body at a specific angle. To allow the guide needle to detach from the guide sheath after puncture, the guide sheath comprises two sheath bodies 101. A through hole in the center of the two sheath bodies 101 allows the guide needle to slide. The two sheath bodies 101 can be made of magnetic material, or a magnet can be placed between them to create magnetic force and prevent detachment during needle insertion. An optional connection between the guide sheath and the fixing lug 102 involves a support rod 109 on the outer wall of either sheath body 101, which hinges to the fixing lug 102.
[0036] To ensure that the needle tip of the puncture needle is visible in the ultrasound image, the mounting positions of the fixing ear 102 relative to the ferrule, the guide sheath, and the fixing ear 102 should ensure that the plane formed by the rotation of the guide sheath is perpendicular to the plane in which the ultrasound probe 103 emits light, and that the guide sheath and the ultrasound emission direction are set at an angle of 110°-140° to the plane in which they are located.
[0037] When using this device, the body surface to be punctured is disinfected beforehand. The ultrasound probe 103 is installed in the ferrule. The ultrasound probe 103 scans the body surface to find the straightest possible puncture vessel as the puncture area. The two sheaths 101 are joined together to form a guide sheath, and the guide sheath is connected to the fixing ear 102. After the needle is inserted into the body surface, the guide sheath rotates slightly relative to the fixing ear 102 until the tip of the guide needle is visible in the ultrasound image. After the guide needle is inserted into the puncture vessel, the two sheaths 101 are detached. At this point, the auxiliary device can be removed from the body surface.
[0038] Example 2:
[0039] Based on Example 1, such as Figure 3 In the embodiment shown, in order to facilitate the detachment of the two sheaths 101 after puncture, a pry bar 108 is provided on the outer wall of the two sheaths 101. The two sheaths 101 can be easily and quickly detached by pinching the two pry bars 108.
[0040] Example 3:
[0041] Based on Example 1 or 2, such as Figure 3 In the illustrated embodiment, to ensure accurate alignment of the two sheaths 101 during the formation of the guide sheath, a matching alignment structure is provided on the side of the two sheaths 101 that are in contact. The alignment structure can employ matching slots and blocks, with the slots and blocks positioned on different parts of the sheaths 101. When the block engages with the slot, the two sheaths 101 can be quickly and accurately aligned.
[0042] Example 4:
[0043] Based on any of the embodiments 1-3, such as Figure 5 In the illustrated embodiment, when the puncture needle is inserted into the body surface, the oscillation of the puncture needle is reduced during the process of searching for the needle tip image after the needle is inserted. A slider 110 is slidably connected to the fixing ear 102, and the guide sheath and the slider 110 are rotatably connected. In use, as the puncture needle is inserted, the angle of the guide sheath can be kept constant, and the ultrasound probe 103 can be pulled back to visualize the needle tip in the ultrasound image.
[0044] In this embodiment, in order to reduce the friction between the slider 110 and the fixed ear 102, the slider 110 is made of polytetrafluoroethylene (PTFE). PTFE material ensures the strength of the slider 110 while also having a certain degree of self-lubrication.
[0045] Example 5:
[0046] Based on any of the embodiments 1-4, such as Figure 6In the illustrated embodiment, to facilitate viewing the general direction of blood vessels, two parallel guide plates 111 are provided at any card 104. The two guide plates 111 serve to indicate the location of blood vessels. During use, to ensure the transmission of ultrasound, the upper and lower surfaces of the two guide plates 111 are in contact with the ultrasound probe 103 and the body surface, respectively. The plane formed by the rotation of the guide sheath is perpendicular to the plane where the two guide plates 111 are located and is equidistant from the two guide plates 111.
[0047] Example 6:
[0048] Based on any of the embodiments 1-5, such as Figure 7 In the illustrated embodiment, to facilitate the visualization of subsurface blood vessels and puncture needles inserted into the body surface, a coupling sheet 112 is provided at the bottom of any card 104. The coupling sheet 112 includes a PE film, which serves to confine the coupling agent without obstructing the transmission of ultrasound. The PE film is filled with coupling agent. In use, the coupling sheet 112 protrudes from the bottom end face of the card sleeve. When the ultrasound probe 103 contacts the body surface, the air between the ultrasound probe 103 and the coupling sheet 112, and between the coupling sheet 112 and the body surface, is squeezed out due to the pressure of the ultrasound probe 103.
[0049] In order to facilitate the development of the two guide plates 111, the two guide plates 111 are disposed within the coupling plate 112.
[0050] The above-described embodiments are merely preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be covered within the protection scope of this utility model.
Claims
1. An auxiliary device for ultrasound-guided arterial puncture, characterized in that, Includes a sleeve, the sleeve including mutually hinged cards (104), each card (104) having a slot (106) on its inner wall that is adapted to the outer peripheral surface of the ultrasound probe (103), the end face of the sleeve that contacts the body surface is set at an angle, so that the ultrasound emission direction is set at an acute angle to the body surface. A card (104) has a fixing ear (102) near the outer wall of the body surface, and The guide sheath has a through hole at its axis for the puncture needle to pass through. The guide sheath is split and includes two sheath bodies (101). The two sheath bodies (101) are attracted to each other. A support rod (109) is provided on the outer wall of either sheath body (101). The guide sheath is hinged to the support rod (109) and the fixing ear (102). The plane formed by the rotation of the guide sheath is perpendicular to the plane where the ultrasonic probe (103) emits light, and the guide sheath and the plane where the ultrasonic emission direction is located are set at an angle of 110°-140°.
2. The auxiliary device for ultrasound-guided arterial puncture as described in claim 1, characterized in that, The outer walls of the two sheaths (101) are provided with paddles (108), and pinching the two paddles (108) causes the two sheaths (101) to detach.
3. The auxiliary device for ultrasound-guided arterial puncture as described in claim 1, characterized in that, The two sheaths (101) are provided with a centering structure that matches each other on the side where they are in contact.
4. The auxiliary device for ultrasound-guided arterial puncture as described in claim 1, characterized in that, A slider (110) is slidably connected to the fixed ear (102), and the guide sheath and the slider (110) are rotatably connected.
5. The auxiliary device for ultrasound-guided arterial puncture as described in claim 4, characterized in that, The slider (110) is made of polytetrafluoroethylene.
6. The auxiliary device for ultrasound-guided arterial puncture as described in claim 1, characterized in that, Two parallel guide plates (111) are provided at any card (104). The upper and lower surfaces of the two guide plates (111) are in contact with the ultrasonic probe (103) and the body surface, respectively. The plane formed by the rotation of the guide sheath is perpendicular to the plane where the two guide plates (111) are located and is equidistant from the two guide plates (111).
7. The auxiliary device for ultrasound-guided arterial puncture as described in claim 6, characterized in that, Each card (104) has a coupling sheet (112) at its bottom, the coupling sheet (112) comprising a PE film filled with a coupling agent.
8. The auxiliary device for ultrasound-guided arterial puncture as described in claim 7, characterized in that, Two guide plates (111) are disposed within the coupling plate (112).
9. The auxiliary device for ultrasound-guided arterial puncture as described in claim 1, characterized in that, Gaskets are provided at the contact points between each slot (106) and the ultrasonic probe (103).
10. The auxiliary device for ultrasound-guided arterial puncture as described in claim 9, characterized in that, The gasket is made of silicone or rubber.