Blood vessel communication assembly

Abstract

The invention relates to the technical field of medical instruments, and provides a blood vessel communication assembly which comprises two puncture pieces used for being communicated with the two ends of a blood vessel respectively, a communication path arranged between the two puncture pieces and a switch arranged on the communication path, and the switch is used for controlling connection and disconnection between the two puncture pieces; the puncture part comprises a needle head part used for puncture, a penetrating channel communicated with the needle head part and an operation part communicated with the penetrating channel, the penetrating channel is used for blood circulation, and the needle head part is coaxially sleeved with an abutting part used for abutting against the inner wall of a blood vessel; the through channel is provided with a control assembly used for controlling the abutting piece to be opened or contracted. The blood vessel hemostasis device has the beneficial effects that the blood supply insufficiency of the blood vessel at the telecentric end is reduced while bleeding of the broken blood vessel is simply and quickly stopped.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to vascular connectivity components. Background Technology

[0002] A ruptured blood vessel, especially an artery, can cause serious harm if not treated promptly. Therefore, emergency hemostasis is necessary. In the current technology, when the patient can be transported to the hospital in time, some professional hemostasis treatments are used for emergency hemostasis. However, this increases the requirements and difficulty of hemostasis, thereby increasing the corresponding operation time and affecting the final emergency treatment effect.

[0003] Therefore, in order to stop bleeding from ruptured blood vessels relatively quickly and easily, the common practice in the prior art is to compress the blood vessel near the heart. However, when there is a large amount of bleeding, the amount of bleeding can be controlled to a limited extent due to the limited compression method and the limited compression force, making it difficult to achieve limited hemostasis.

[0004] Especially in situations with limited resources or in urgent circumstances, such as wilderness first aid or battlefield scenarios, while compression hemostasis can block blood flow channels, if vascular access cannot be restored in time, there will be prolonged insufficient blood supply to distal vessels. If the corresponding body part experiences prolonged ischemia, it can easily lead to limb necrosis, which is difficult to recover from and has a high rate of disability. Therefore, further improvements are needed. Summary of the Invention

[0005] In order to quickly and easily stop bleeding from ruptured blood vessels while reducing the risk of insufficient blood supply to distal vessels, this application provides a vascular connectivity component.

[0006] The blood vessel connectivity component provided in this application adopts the following technical solution: A vascular communication assembly includes two puncture elements for connecting to both ends of a blood vessel, a communication path between the two puncture elements, and a switch on the communication path. The switch is used to control the connection between the two puncture elements. Each puncture element includes a needle head for puncture, a through channel connected to the needle head, and an operating part connected to the through channel. The through channel is used for blood flow. An abutment is coaxially sleeved on the needle head for abutting against the inner wall of the blood vessel. A control component is provided on the through channel for controlling the abutment to open or close.

[0007] By employing the above technical solution, the needle tip of one puncture device is inserted through the skin into a proximal blood vessel via the operating unit. Then, the control component opens the abutment, which then abuts against the inner wall of the blood vessel to intercept blood flow, allowing blood to flow through the needle tip and reducing the possibility of further flow from the ruptured vessel. Once the puncture device successfully connects the proximal blood vessel, the closing switch is opened, allowing blood to flow into the needle tip of the next puncture device, thus removing air from the connection path between the two devices. The same procedure is then performed on the other puncture device, first inserting the needle tip through the skin into a distal blood vessel, and then abutting against the inner wall of the vessel via the abutment, establishing a vascular channel between the two ends of the ruptured vessel, maintaining normal blood supply to the distal vessel, and achieving hemostasis at the ruptured site, facilitating subsequent cleaning and repair.

[0008] Therefore, by setting two connected puncture devices and a switch, and controlling blood flow through the switch, this hemostasis method is simple to operate and can quickly establish a blood supply bypass for hemostasis. It can also reduce the hemostasis operation time and reduce the possibility of insufficient blood supply to distal vessels, thereby reducing the possibility of limb necrosis and difficult recovery caused by insufficient blood supply.

[0009] Preferably, the outer peripheral wall of the through channel has a plurality of first axial grooves spaced apart along its own axis. The depth of the first axial grooves gradually increases in the direction away from the needle head. The control component includes a first guide wire that slides through the first axial groove and a pusher disposed in the through channel to push the first guide wire toward the needle head. The end of the abutment away from the needle head is fixedly connected to the first guide wire. Pushing the pusher causes the first guide wire to slide toward the needle head to open the abutment.

[0010] By employing the above technical solution, after the needle tip pierces the blood vessel, the pushing component is activated, causing the first guidewire and the abutment component, which have entered the blood vessel along with the needle tip, to move towards the inner wall of the blood vessel. The depth of the first guidewire gradually increases away from the needle tip as the first axial groove deepens, thus guiding the first guidewire towards the inner wall of the blood vessel. Finally, when the abutment component abuts against the inner wall of the blood vessel, it intercepts the blood flow, allowing blood to flow through the needle tip to the distal blood vessel. This not only stops bleeding in the ruptured blood vessel but also reduces the risk of insufficient blood supply to the distal blood vessel.

[0011] Preferably, the outer peripheral wall of the through channel has a plurality of second axial grooves spaced apart along its own axis. The control component includes a second guidewire that slides through the second axial groove and a retractor that is coaxially sleeved in the through channel and connected to the plurality of second guidewires. The second guidewire is arc-shaped in the direction close to the through channel. The end of the abutment away from the needle tip is fixedly connected to the upper end of the second guidewire. The lower end of the second guidewire is slidably connected to the retractor. The retractor is contracted to push the lower end of the second guidewire to slide in the direction close to the needle tip, so that the upper end of the second guidewire moves in the direction close to the inner wall of the blood vessel to open the abutment.

[0012] By adopting the above technical solution, it should be noted that, under normal circumstances, the diameter of the retractor is larger than the diameter of the needle head and the through-channel. When the needle head pierces the blood vessel, the upper end of the second guidewire passes through the second axial groove and can enter the blood vessel along with the needle head. At this time, the retractor is then contracted to change its diameter. As the diameter decreases, since the upper end of the second guidewire is located in the blood vessel and the middle part of the second guidewire is wrapped by the skin, the lever principle can be used to make the middle part of the second guidewire rotate along the contact point with the skin when the retractor is contracted, so that the upper end of the second guidewire moves towards the inner wall of the blood vessel, thereby opening the contact member. Finally, when the contact member abuts against the inner wall of the blood vessel, it can intercept the blood in the blood vessel, so that the blood flows through the needle head to the distal blood vessel, thereby stopping the bleeding of the ruptured blood vessel and reducing the occurrence of insufficient blood supply to the distal blood vessel.

[0013] It should be noted that by sliding the lower end of the second guide wire to the gathering member, when the gathering member is contracted and its diameter is changed, the distance between the lower ends of adjacent second guide wires can be moved closer to each other, reducing the possibility of several second guide wires getting stuck during the process of opening the abutment member.

[0014] Preferably, the pushing member includes a push ring that is slidably sleeved on the through channel, a plurality of first guide wires being fixedly connected to the push ring, and a limiting member that restricts the sliding of the push ring is provided on the through channel.

[0015] By adopting the above technical solution, when the pusher ring pushes the first guide wire to drive the abutment to abut against the inner wall of the blood vessel, the set limiting member limits the path pushed by the pusher ring, so as to reduce the possibility of the abutment retracting due to the pressure impact of blood, thereby improving the interception effect of blood in the blood vessel and reducing the possibility of blood flowing from the ruptured blood vessel.

[0016] Preferably, the limiting member includes a first locking tooth disposed on the inner wall of the push ring and a second locking tooth disposed on the outer peripheral wall of the through channel. A plurality of second locking teeth are disposed at intervals along the length direction of the through channel. The first locking tooth engages with the second locking tooth. The first locking tooth can easily move toward the needle head, but when pulled in the opposite direction, the crossbar engages to form a locking mechanism.

[0017] By adopting the above technical solution, since the first locking tooth can easily move towards the needle tip, it is convenient to push the push ring to push the first guide wire towards the inner wall of the blood vessel. When the first guide wire moves the abutment to abut the inner wall of the blood vessel, the first locking tooth engages with the second locking tooth, and the crossbar engages to form a locking mechanism, which can reduce the possibility of the abutment retracting due to the pressure impact of blood.

[0018] Preferably, the limiting member includes a limiting piece disposed on the inner wall of the push ring, and the outer peripheral wall of the through channel is provided with a limiting groove for the limiting piece to be inserted, and a plurality of limiting grooves are provided at intervals along the length direction of the through channel.

[0019] By adopting the above technical solution, when the push ring is pushed so that the abutment abuts against the inner wall of the blood vessel and the limiting piece is embedded in the limiting groove at the relative position, the displacement pushed by the push ring can be limited.

[0020] Preferably, the first axial groove is arc-shaped at one end near the needle head, and the upper end of the first guide wire is arc-shaped towards the needle head.

[0021] By adopting the above technical solution, since the end of the first axial groove near the needle head is arc-shaped, the curvature of the first axial groove gradually increases towards the needle head, so that the first guide wire is arc-shaped and trumpet-shaped as it moves towards the needle head. Therefore, by making the end of the first axial groove near the needle head arc-shaped, the range of the abutment members driven by the several first guide wires can be increased, thereby improving the adaptability of the puncture member.

[0022] Specifically, by setting the upper end of the first guidewire in an arc shape closer to the needle tip, it serves two purposes: firstly, it adapts to the arc-shaped orientation of the first axial groove, reducing the possibility of jamming during the sliding of the first guidewire; secondly, it allows the shape of the expanded abutment to be arc-shaped like a trumpet. When blood flows and impacts the first guidewire, the arc-shaped first guidewire can improve its resistance to blood impact, reducing the possibility of gaps appearing between the abutment and the inner wall of the blood vessel after the straight first guidewire is compressed. Furthermore, when subjected to blood impact, the first guidewire is compressed, reducing its original arc and further abutting against the inner wall of the blood vessel, thereby improving the tightness between the guidewire and the inner wall, thus improving the interception effect of blood in the blood vessel and further improving the hemostasis effect on ruptured blood vessels.

[0023] Preferably, the first guidewire includes a sliding section slidably connected to the first axial groove, a connecting section disposed in the sliding section, and an arc-shaped section disposed in the connecting section. The arc-shaped section is disposed at one end of the connecting section away from the sliding section, and the free end of the arc-shaped section is disposed close to the sliding section. The abutment is fixedly connected to the arc-shaped section at one end away from the needle head and extends to the free end of the arc-shaped section.

[0024] By adopting the above technical solution, by setting a sliding section, a connecting section and an arc-shaped section, and fixing the end of the abutment away from the needle tip to the arc-shaped section, the possibility of the first guidewire being exposed to the abutment and then abutting against the inner wall of the blood vessel, thereby causing damage to the inner wall of the blood vessel, can be reduced.

[0025] Preferably, the device further includes a fixing member for fixing the operating part. The fixing member includes a second cable tie head fixedly connected to the operating part and a cable tie passing through the second cable tie head, with one end of the cable tie fixedly connected to the second cable tie head.

[0026] By adopting the above technical solution, after the puncture site is connected to the blood vessel, the operating part is placed against the skin. At this time, the ligature is wrapped around the corresponding part, such as the arm or leg. The ligature is then threaded through the second ligature head, and the ligature is pulled to fix the operating part, thereby reducing the possibility of the needle tip detaching from the blood vessel due to external force.

[0027] Preferably, a dosing tube is provided on the connecting path.

[0028] By adopting the above technical solution, a drug delivery tube is installed on the connecting tube path, which allows for the injection of drug solution or pressurized injection as needed while performing hemostasis.

[0029] In summary, this application has the following beneficial effects: 1. By setting two connected puncture devices and a switch, the blood flow is controlled by the switch. This hemostasis method is simple to operate and can quickly establish a blood supply bypass for hemostasis. It can also reduce the hemostasis operation time and reduce the possibility of insufficient blood supply to the distal blood vessels, thereby reducing the possibility of limb necrosis and difficult recovery caused by insufficient blood supply.

[0030] 2. By setting a limiting component, the path pushed by the push ring is limited, thereby reducing the possibility of the contact component retracting due to the pressure impact of blood, thus improving the interception effect on blood in the blood vessel and reducing the possibility of blood flowing from the ruptured blood vessel.

[0031] 3. The first axial groove is set in an arc shape at the end near the needle tip. At this time, the curvature of the first axial groove gradually increases towards the needle tip to improve the adaptability of the puncture device. The upper end of the first guidewire is also set in an arc shape towards the needle tip, which can adapt to the arc shape of the first axial groove, reduce the possibility of jamming during the sliding of the first guidewire, and further abut against the inner wall of the blood vessel after being impacted by blood. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 3 yes Figure 2 A magnified view of part A in the middle; Figure 4 This is a schematic cross-sectional view of the rubber sleeve in Embodiment 1 of this application, which is stretched open to abut against the inner wall of the blood vessel. Figure 5 yes Figure 4 A magnified view of part B in the middle; Figure 6 This is a schematic diagram of the limiting member in Embodiment 1 of this application; Figure 7 This is a schematic diagram of the dosing tube and filter in Embodiment 1 of this application; Figure 8 This is a schematic diagram of the limiting member in Embodiment 2 of this application; Figure 9 This is a schematic diagram of the structure of Embodiment 3 of this application; Figure 10 This is a schematic cross-sectional view of the rubber sleeve in Embodiment 3 of this application, showing how it is spread open to abut against the inner wall of the blood vessel. Figure 11 This is a schematic diagram of the structure of the reminder component in Embodiment 4 of this application; Figure 12This is a cross-sectional structural diagram of the reminder component in Embodiment 4 of this application; Figure 13 This is a schematic diagram of the fastener structure in Embodiment 5 of this application; Figure 14 This is a schematic diagram of the tape structure in Embodiment 5 of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Blood vessel; 2. Puncture element; 21. Needle tip; 22. Penetration channel; 221. First axial groove; 222. Limiting block; 223. Limiting groove; 224. Second axial groove; 23. Operating part; 231. Cannula; 232. Handle; 3. Connecting path; 31. Filter; 32. Drug delivery tube; 33. T-connector; 4. Switch; 5. Abutment element; 6. Control assembly; 61. First guidewire; 611. Sliding section; 6 12. Connecting section; 613. Arc-shaped section; 62. Pushing component; 621. Push ring; 622. Push rod; 63. Second guide wire; 631. Sliding sleeve; 64. Gathering component; 641. First cable tie head; 642. Second belt body; 7. Limiting component; 71. First locking tooth; 72. Second locking tooth; 73. Limiting piece; 8. Reminder component; 81. Reminder rod; 82. Elastic rope; 9. Fixing component; 91. Second cable tie head; 92. First belt body; 10. Adhesive tape. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-14 This application will be described in further detail below.

[0035] This application discloses a blood vessel connectivity component.

[0036] Example 1: Vascular connectivity components, see reference Figure 1 , Figure 2 It includes two puncture pieces 2 for connecting to the two ends of the ruptured blood vessel 1, a connecting path 3 between the two puncture pieces 2, and a switch 4 on the connecting path 3. In this embodiment, a ruptured artery 1 in the arm is taken as an example.

[0037] The connecting path 3, used for blood delivery, can be a flexible tube; in this embodiment, it is specifically an infusion tube. The connection between the puncture device 2 and the infusion tube can be made using a quick-connect coupling. It should be noted that any tubing suitable for delivering liquids can be used as the connecting path 3 in this embodiment.

[0038] In this embodiment, switch 4 is disposed on the connecting path 3 to control the on / off state between the two puncture devices 2. Switch 4 can be disposed by a tubing clamp or a flow regulator. In this embodiment, a flow regulator adapted to the infusion tubing is specifically selected. It should be noted that any switch 4 that can be used to control the on / off state of the connecting path 3 can be used as switch 4 in this embodiment. The infusion tubing and flow regulator are both prior art, so they will not be described in detail here.

[0039] Specifically, the puncture device 2 includes a needle head 21 that punctures into the blood vessel 1, a through channel 22 connected to the needle head 21, and an operating part 23 connected to the through channel 22 and located outside the blood vessel 1. It should be noted that the connection between the through channel 22 and the needle head 21 is relatively smooth, so that the upper end of the through channel 22 can enter the blood vessel 1 together with the needle head 21.

[0040] Reference Figure 2 , Figure 3 The through-channel 22 is used for blood flow, and the end of the operating part 23 away from the needle tip 21 is connected to the infusion tubing. The operating part 23 specifically includes a sleeve 231 coaxially fixedly connected to the through-channel 22 and the infusion tubing, and a handle 232 fixedly connected to the outer peripheral wall of the sleeve 231. By squeezing the handle 232, the needle tip 21 can be pushed into the skin and blood vessel 1 to communicate with the blood in the blood vessel 1.

[0041] Reference Figure 3 , Figure 4 Furthermore, to ensure that the blood vessels on both sides of the puncture device 2 are interconnected and to reduce the possibility of blood flowing from the previously ruptured blood vessel 1, in this embodiment, an abutment 5 is coaxially sleeved on the needle head 21 to abut against the inner wall of the blood vessel 1, and a control component 6 for controlling the opening or closing of the abutment 5 is provided on the through channel 22. Specifically, the abutment 5 is a rubber sleeve, and the control component 6 specifically includes a first guide wire 61 and a pusher 62 disposed in the through channel 22 to push the first guide wire 61 to slide along the length of the through channel 22. The end of the rubber sleeve away from the needle head 21 is fixedly connected to the first guide wire 61. The pusher 62 pushes the first guide wire 61 to slide towards the needle head 21 to open the rubber sleeve. When the needle head 21 and the rubber sleeve enter the blood vessel 1 together, the rubber sleeve is opened to abut against the inner wall of the blood vessel 1 to intercept the blood in the blood vessel 1. Pushing the first guide wire 61 to slide away from the needle head 21 closes the rubber sleeve.

[0042] In this embodiment, the first guide wire 61 can be made of polyester, polyamide, or an elastic metal material, as these materials all have good hardness, strength, and elasticity, and the specific material can be chosen according to requirements. The outer peripheral wall of the through channel 22 has a first axial groove 221 for the first guide wire 61 to slide through. Several first axial grooves 221 are spaced apart along the axis of the through channel 22. The depth of the first axial grooves 221 gradually increases in the direction away from the needle head 21. The first guide wire 61 slides through the first axial groove 221, and the number of first guide wires 61 corresponds to the number of first axial grooves 221.

[0043] Reference Figure 4 , Figure 5 It should be noted that, in this embodiment, the groove depth of the first axial groove 221 can be gradually increased in the direction away from the needle head 21. The first axial groove 221 can be set at an inclination or in an arc shape. In order to increase the range when the first guide wire 61 drives the rubber sleeve to be in an open state, in this embodiment, the end of the first axial groove 221 near the needle head 21 is set in an arc shape. Correspondingly, the upper end of the first guide wire 61 is also set in an arc shape near the needle head 21.

[0044] It should be noted that, in order to reduce the possibility of the first guide wire 61 slipping out of the first axial groove 221, in this embodiment, limit blocks 222 are provided on the opposite side walls of the first axial groove 221 near the upper end of the needle head 21.

[0045] The first guidewire 61 specifically includes a sliding section 611 slidably connected to the first axial groove 221, a connecting section 612 disposed in the sliding section 611, and an arc-shaped section 613 disposed in the connecting section 612. In this embodiment, the connecting section 612 is also arc-shaped, specifically arc-shaped towards the needle tip 21. The arc-shaped section 613 is disposed at the end of the connecting section 612 away from the sliding section 611, and the free end of the arc-shaped section 613 is disposed close to the sliding section 611. The end of the rubber sleeve away from the needle tip 21 is fixedly connected to the arc-shaped section 613 and extends to the free end of the arc-shaped section 613, so as to reduce the possibility of the relatively stiff first guidewire 61 abutting against the inner wall of the blood vessel 1 and causing damage to the inner wall of the blood vessel 1.

[0046] It should be noted that the upper end of the first guidewire 61 is also arranged in an arc shape close to the needle head 21. On the one hand, this can adapt to the arc-shaped direction of the first axial groove 221, reducing the possibility of jamming during the sliding of the first guidewire 61. On the other hand, it can make the shape of the expanded rubber sleeve be arc-shaped like a trumpet. When the blood flow impacts the first guidewire 61, the arc-shaped first guidewire 61 can improve the resistance to blood impact. This reduces the possibility of gaps appearing between the rubber sleeve and the inner wall of the blood vessel 1 after the straight first guidewire 61 is compressed. Moreover, when subjected to blood impact, the arc of the first guidewire 61 is reduced, further abutting against the inner wall of the blood vessel 1, thereby improving the tightness between it and the inner wall of the blood vessel 1, that is, improving the interception effect of blood in the blood vessel 1, and further improving the hemostasis effect of the ruptured blood vessel 1.

[0047] The pushing component 62 specifically includes a push ring 621 slidably sleeved on the through channel 22 and a push rod 622 fixedly connected to the push ring 621. The push rod 622 is disposed on the end face of the push ring 621 away from the needle head 21. One end of each of the first guide wires 61 away from the needle head 21 is fixedly connected to the push ring 621. The push ring 621 is disposed between the first axial groove 221 and the operating part 23. A force is applied to the push rod 622 in the direction close to the needle head 21, thereby pushing the first guide wires 61 to move towards the inner wall of the blood vessel 1 along the axial direction of the first axial groove 221, so as to open the rubber sleeve into a trumpet shape. When the rubber sleeve abuts against the inner wall of the blood vessel 1, it intercepts the blood in the blood vessel 1, thereby stopping the bleeding of the ruptured blood vessel 1 and reducing the occurrence of insufficient blood supply to the distal blood vessel 1.

[0048] Reference Figure 4 , Figure 6 Furthermore, to reduce the possibility of the rubber sleeve retracting due to the pressure impact of blood, in this embodiment, a limiting member 7 is provided on the through channel 22 to restrict the sliding of the push ring 621. The limiting member 7 includes a first locking tooth 71 fixedly connected to the inner wall of the push rod 622 and a second locking tooth 72 fixedly connected to the outer peripheral wall of the through channel 22. Several second locking teeth 72 are spaced apart along the length direction of the through channel 22. The first locking tooth 71 engages with the second locking tooth 72. The first locking tooth 71 can easily move towards the needle tip 21, but when pulled in the opposite direction, the crossbar engages to form a locking mechanism, thereby fixing the length moved by the push ring 621, that is, limiting the rubber sleeve after it abuts against the inner wall of the blood vessel 1.

[0049] Reference Figure 7Furthermore, to reduce the possibility of air entering the distal blood vessel 1 along the infusion tubing, in this embodiment, a filter 31, specifically an air filter 31, is provided along the delivery path of the infusion tubing near the proximal blood vessel 1. The filter 31 is coaxially and fixedly connected to the inner circumferential wall of the infusion tubing. To facilitate the injection of medication or pressurized injection according to the patient's needs, a medication delivery tube 32 is provided on the infusion tubing. Specifically, a three-way tube 33 is fixedly connected to the infusion tubing, with its two ends fixedly connected to the infusion tubing. The medication delivery tube 32 is fixedly connected to the three-way tube 33. It should be noted that the medication delivery tube 32 is located at the end of the filter 31 near the proximal blood vessel 1, allowing the filter 31 to prevent foreign objects, bacteria, and air from entering the patient's body, thus ensuring the patient's safety and health.

[0050] The implementation principle of the vascular connection component in this application embodiment is as follows: After squeezing the handle 232, the needle head 21 of one of the puncture parts 2 is inserted through the skin into the blood vessel 1 near the heart. At this time, a force is applied to the push ring 621 towards the needle head 21 to drive the first guide wire 61 and the rubber sleeve to move towards the inner wall of the blood vessel 1. When the rubber sleeve abuts against the inner wall of the blood vessel 1, it intercepts the blood in the blood vessel 1. At this time, the closing switch 4 needs to be opened. The blood flowing through the puncture part 2 will expel air from the inside of the infusion tubing, and it is also possible to observe whether the blood flows normally to determine whether the puncture connection is successful. Then the switch 4 is closed.

[0051] Next, the needle tip 21 of another puncture device 2 is inserted through the skin into the distal blood vessel 1, and continues to abut against the inner wall of the blood vessel 1 through the abutment device 5. Then, the switch 4 is turned on to establish a blood vessel 1 channel, which establishes a blood vessel 1 channel for both ends of the ruptured blood vessel 1, so as to achieve the hemostasis effect at the ruptured blood vessel 1 at this time, and maintain the normal blood supply to the distal blood vessel 1, so as to reduce the possibility of limb necrosis and difficulty in recovery due to insufficient blood supply.

[0052] Example 2: Reference Figure 8 The difference from Embodiment 1 is that in this embodiment, the limiting member 7 is a limiting piece 73 fixedly connected to the inner wall of the push ring 621. A limiting groove 223 for the limiting piece 73 to be inserted is provided on the outer peripheral wall of the through channel 22 away from the first axial groove 221. Several limiting grooves 223 are spaced apart along the length of the through channel 22. When the push ring 621 is pushed until the rubber sleeve abuts against the inner wall of the blood vessel 1, the limiting piece 73 is engaged in the limiting groove 223, thus limiting the displacement of the push ring 621 after it has been pushed.

[0053] Example 3: Reference Figure 9 , Figure 10 The difference from Embodiment 1 is that in this embodiment, the control component 6 specifically includes a second guide wire 63 and a gathering member 64 coaxially sleeved in the through channel 22 and connected to several second guide wires 63. In this embodiment, the second guide wire 63 is arc-shaped, specifically arc-shaped towards the through channel 22. It should be noted that the second guide wire 63 is set with the first guide wire 61. However, in this embodiment, the second guide wire needs to be made of a material with higher hardness. The end of the abutment member 5 away from the needle head 21 is fixedly connected to the upper end of the second guide wire 63. The outer peripheral wall of the through channel 22 has a second axial groove 224 for the second guide wire 63 to slide through. Several second axial grooves 224 are distributed at intervals along the axis of the through channel 22. The second guide wires 63 slide through the second axial grooves 224, and the number of second guide wires 63 corresponds to the number of second axial grooves 224.

[0054] It should be noted that, in order to reduce the possibility of the second guide wire 63 slipping out of the second axial groove 224, in this embodiment, limit blocks 222 are also provided on the opposite side walls of the second axial groove 224 near the upper end of the needle head 21.

[0055] The gathering member 64 is a cable tie, which specifically includes a first cable tie head 641 and a first strap body 92 passing through the first cable tie head 641. One end of the first strap body 92 is fixedly connected to the first cable tie head 641, and a sliding sleeve 631 is provided at the lower end of the second guide wire 63. The sliding sleeve 631 is slidably sleeved on the first strap body 92.

[0056] Therefore, in this embodiment, pulling the first band 92 achieves the effect of contracting the tightening member 64. Since the upper end of the second guidewire 63 is located in the blood vessel 1, and the middle part of the second guidewire 63 is wrapped by the skin at this time, when contracting the tightening band, the lever principle can be used to make the middle part of the second guidewire 63 rotate along the contact point with the skin, so that the upper end of the second guidewire 63 moves towards the inner wall of the blood vessel 1, thereby expanding the rubber sleeve. Finally, when the rubber sleeve abuts against the inner wall of the blood vessel 1, it can intercept the blood in the blood vessel 1, so that the blood flows through the needle head 21 to the distal end of the blood vessel 1, thereby stopping the bleeding of the ruptured blood vessel 1 and reducing the occurrence of insufficient blood supply to the distal end of the blood vessel 1.

[0057] It should be noted that in this embodiment, a cable tie is selected as the gathering member 64, which can fix the changed diameter of the gathering member 64 and reduce the possibility of the second guide wire 63 retracting after being impacted by blood pressure.

[0058] Example 4: Reference Figure 11 , Figure 12The difference from Embodiment 1 is that, in this embodiment, a reminder element 8 is provided on the through channel 22. The reminder element 8 specifically includes a reminder rod 81 that slides through the push ring 621 and an elastic rope 82 that is fixedly connected to the reminder rod 81. The upper end of the reminder rod 81 abuts against the first guide wire 61, the reminder rod 81 passes through the push ring 621, the lower end of the reminder rod 81 is fixedly connected to the middle of the elastic rope 82, and the two ends of the elastic rope 82 are fixedly connected to the outer peripheral wall of the through channel 22.

[0059] When the rubber sleeve abuts against the inner wall of blood vessel 1, the pressure of the blood exerts a force on the rubber sleeve and the first guidewire 61, causing the first guidewire 61 to deform slightly. Since the first guidewire 61 is arc-shaped, the pressure causes it to move away from the needle tip 21, thus exerting a force on the alert rod 81 and moving it closer to the elastic cord 82. Because the two ends of the elastic cord 82 are fixed to the outer wall of the through-channel 22, and the lower end of the alert rod 81 is fixedly connected to the middle of the elastic cord 82, the elastic cord 82 can deform under pressure. This serves as a reminder, reducing the possibility of damage to the inner wall of blood vessel 1 if the push ring 621 is continued to be pushed.

[0060] Example 5: Reference Figure 13 The difference from Embodiment 1 is that, after the needle tip 21 is punctured into the blood vessel 1, in order to reduce the possibility of the needle tip 21 detaching from the blood vessel 1, this embodiment also includes a fixing member 9 for fixing the operating part 23. It should be noted that the fixing member 9 can also be used in Embodiment 3.

[0061] The fixing component 9 specifically includes a second cable tie head 91 fixedly connected to the handle 232 and a second strap body 642 passing through the second cable tie head 91. One end of the second strap body 642 is fixedly connected to the second cable tie head 91. Before the second strap body 642 is passed through the second cable tie head 91, the handle 232 needs to be pressed against the skin. After pressing, the second strap body 642 is wrapped around the arm and passed through the second cable tie head 91. Then, the second strap body 642 is pulled to fix the operating part 23, thereby reducing the possibility that the needle head 21 may detach from the blood vessel 1 due to external force.

[0062] It should be noted that, since this embodiment takes an artery 1 on the arm as an example, the second strap 642 is wrapped around the arm. When stopping bleeding from arteries 1 in other parts of the body, the length of the second strap 642 can be adjusted accordingly. Alternatively, a cable tie with Velcro can be used to secure the operating part 23. If it is inconvenient to wrap the strap around the arm, adhesive tape 10 can be used. The middle part of the adhesive tape 10 is adhered to the handle 232, and the two ends of the adhesive tape 10 are adhered to the skin to secure the operating part 23. Figure 14 As shown.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vascular access assembly, characterized by: The utility model provides a blood vessel puncture device, including two respectively for with blood vessel (1) two ends communication puncture piece (2), set up in two puncture piece (2) between the communication path (3) and set up on the communication path (3) switch (4), the switch (4) is used for control two puncture piece (2) between the on-off, puncture piece (2) including for puncture needle head (21), the through channel (22) of communication in needle head (21) and the operating part (23) of communication in through channel (22), the through channel (22) is used for blood flow, the needle head (21) coaxial sleeve is set up for abutting on the abutment piece (5) in blood vessel (1) inner wall, the through channel (22) is equipped with for control abutment piece (5) and is opened or is contracted control assembly (6).

2. The vascular communication assembly according to claim 1, wherein: The outer peripheral wall of the through channel (22) is spaced along its own axis and is provided with a plurality of first axial grooves (221), the groove depth of the first axial grooves (221) gradually increases away from the needle head (21), the control assembly (6) includes a first guide wire (61) slidingly arranged in the first axial grooves (221) and a pushing member (62) arranged in the through channel (22) to push the first guide wire (61) to move towards the needle head (21), one end of the abutment piece (5) away from the needle head (21) is fixedly connected to the first guide wire (61), the pushing member (62) is pushed to drive the first guide wire (61) to slide towards the needle head (21) to open the abutment piece (5).

3. The vascular communication assembly according to claim 1, wherein: The outer peripheral wall of the through channel (22) is spaced along its own axis and is provided with a plurality of second axial grooves (224), the control assembly (6) includes a second guide wire (63) slidingly arranged in the second axial grooves (224) and a constriction member (64) coaxially sleeved on the through channel (22) to connect with the plurality of second guide wires (63); the second guide wire (63) is arranged in an arc shape towards the through channel (22), one end of the abutment piece (5) away from the needle head (21) is fixedly connected to the upper end of the second guide wire (63), the lower end of the second guide wire (63) is slidingly connected to the constriction member (64), the constriction member (64) is contracted to push the lower end of the second guide wire (63) to slide towards the needle head (21), so that the upper end of the second guide wire (63) moves towards the inner wall of the blood vessel (1) to open the abutment piece (5).

4. The vascular communication assembly according to claim 2, wherein: The pushing member (62) includes a push ring (621) slidingly sleeved on the through channel (22), a plurality of first guide wires (61) are fixedly connected to the push ring (621), and a limiting member (7) is arranged on the through channel (22) to limit the sliding of the push ring (621).

5. The vascular communication assembly according to claim 4, wherein: The limiting piece (7) comprises a first clamping tooth (71) arranged on the inner wall of the push ring (621) and a second clamping tooth (72) arranged on the outer peripheral wall of the through channel (22), the second clamping tooth (72) is arranged at intervals along the length direction of the through channel (22), the first clamping tooth (71) is engaged with the second clamping tooth (72), the first clamping tooth (71) can be easily moved towards the needle head (21), but when pulled in the opposite direction, the crossbar is engaged to form a cooperative lock.

6. The vascular communication assembly according to claim 4, wherein: The limiting piece (7) comprises a limiting piece (73) arranged on the inner wall of the push ring (621), and the outer peripheral wall of the through channel (22) is provided with a limiting strip groove (223) for inserting the limiting piece (73), and the limiting strip groove (223) is arranged at intervals along the length direction of the through channel (22).

7. The vascular communication assembly according to claim 2, wherein: The first axial groove (221) is arranged in an arc shape near one end of the needle head (21), and the upper end of the first guide wire (61) is arranged in an arc shape towards the needle head (21).

8. The vascular communication assembly according to claim 7, wherein: The first guide wire (61) comprises a sliding section (611) slidably connected to the first axial groove (221), a connecting section (612) arranged on the sliding section (611), and an arc-shaped section (613) arranged on the connecting section (612), the arc-shaped section (613) is arranged on one end of the connecting section (612) away from the sliding section (611), the free end of the arc-shaped section (613) is arranged close to the sliding section (611), one end of the abutting piece (5) away from the needle head (21) is fixedly connected to the arc-shaped section (613), and extends to the free end of the arc-shaped section (613).

9. The vascular communication assembly according to claim 1, wherein: Further comprising a fixing piece (9) for fixing the operating part (23), the fixing piece (9) comprises a second cable tie head (91) fixedly connected to the operating part (23) and a cable tie penetrating the second cable tie head (91), one end of the cable tie is fixedly connected to the second cable tie head (91).

10. The vascular communication assembly according to claim 1, wherein: The communication path (3) is provided with a medicine adding pipe (32).

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