CN115429363A - A kind of disconnected limb vascular bridge - Google Patents

Abstract

The invention discloses a vascular bridge of a severed limb, which designs a venous bridge device and an arterial bridge device, wherein a thrombus breaking device is arranged in a first conveying assembly of the venous bridge device and is used for breaking thrombus clots; the first bridge connector is communicated and connected between the first input end of the first conveying assembly and the venous blood vessel of the severed limb; the first output end of first conveyor components switches on even has 1 third bridging joint or 1 waste liquid recovery unit. The second conveying component of the artery bridging device is provided with a blood pressurizing device; the second bridge connector is communicated and connected between the second output end of the second conveying assembly and the arterial vessel of the severed limb; the second input end of the second conveying assembly is connected with 1 fourth bridge connector or 1 blood bag in a conducting manner. Under the condition that the severed limb is urgently needed to be temporarily stored, the device can be used for quickly bridging, pressurizing and thrombolysis, so that the problems of low bridging speed and high infusion resistance are solved. The device is very suitable for the storage of oceans and wars.

Description

A kind of disconnected limb vascular bridge

technical field

The invention belongs to the field of medical devices, and in particular relates to a bridge for disconnected limb blood vessels.

Background technique

Although the replantation of amputated limbs has a history of nearly 57 years, there is still a large gap between the recovery of replanted limbs and healthy limbs. There are two main reasons for this: 1. The recovery of nerve function 2. Restoration of limb muscle function. For nerves, there are many technologies and materials to increase its repair effect, but for muscles, there are still no related technologies and materials that can restore long-term ischemic muscles to their original functions. A large number of clinical reports and studies have confirmed that cell lysis and necrosis will occur in muscle tissue ischemia for more than 6 to 8 hours. At this time, even if the blood flow of the amputated limb is reperfused, severe "ischemia-reperfusion injury" will occur. In this way, in addition to easily leading to life-threatening renal failure in the early postoperative period, it will also lead to muscle contracture and loss of function of the severed limb in the later stage. Therefore, reducing the ischemic time of the amputated muscle is the only way to protect the life of the patient and restore the function of the limb.

It usually takes about 4 hours for patients with severed limbs to be transported to the hospital after being injured, and it takes at least 1 hour for necessary examinations and preparations before surgery. close to the limit value. In addition, traditional simulated limb replantation surgery generally needs to follow the procedures of debridement, exploration, fracture fixation, vascular and nerve repair, and tendon repair. Hour. Therefore, as in the traditional simulated operation method, the first blood perfusion time of the amputated limb muscle cannot meet the requirements.

In addition to cryopreservation of severed limbs during simulated training, many microsurgeons also tried to use infusion rubber tubes as bridging materials before debridement in simulated operations, and connected them to the distal and proximal ends of major arteries on the limbs by means of suture binding. The amputated limb was bled for the first time. This method can indeed achieve the purpose of reducing ischemia time, but it has the following disadvantages: ① It is easy to damage the healthy arteriovenous intima of limbs. ②Lack of the function of simple and repeated bleeding. It must be removed when the operation is continued. If you want to re-circulate the blood, you need to repeat the previous operation; ③The amputated limb is purely arterial and has no venous return. The precious blood of the teaching dummy is wasted, and even with blood transfusion treatment, it is easy to cause hemorrhagic shock of the teaching dummy.

The applicant applied for an invention patent on December 4, 2015, and finally authorized it. Its announcement number is CN105280068B, and the patent title is "A device for arteriovenous bridge connection of severed limbs and its operation and detection method. "(hereinafter referred to as "Comparative Document 1"), the background technology of this patent also includes the above content. Due to the narrow field of severed limb bridging and the extreme lack of available products, severed limb bridging has always been an important research topic.

Reference document 1 is an arteriovenous bridge fitting device for a severed limb, including an infusion hose, and the two ends of the infusion hose are respectively connected to a bridge fitting unit. The sub-joints that match the socket, and the passage connecting the infusion hose and the model arteriovenous blood vessels are opened in the bridge fitting unit. The present invention improves the infusion hose, and the two ends of the hose are respectively socketed with bridge fitting units, and then the model severed limbs and similar model arteriovenous vessels on the model torso are correspondingly socketed on the device. The invention has the advantage of avoiding the secondary damage to the model arteriovenous vessel wall when the infusion hose is sutured and connected to the model arteriovenous vessel in the traditional bridging mode; repeated passage can be achieved by plugging and unplugging the infusion hose on the bridge fitting unit. The function of cutting off blood flow.

Although the technology in Comparative Document 1 can quickly bridge and disconnect arteriovenous vessels, it still faces the following problems: ①As shown in Figure 6 in the accompanying drawings, although the bifurcated piece 23b and the inner liner 23c can clamp the infusion hose together 5. According to the instructions, the infusion tube 5 can also be replaced with a blood vessel, but because it is only clamped and fixed, the blood vessel and the joint are connected by friction force, and the blood vessel is easy to break free, while the blood vessel at the other end is bound with a thread 3 (such as Shown in Figure 7) can easily cause blood vessel slippage. Moreover, because the vascular resistance of the severed limb is very large, it requires a huge hydraulic pressure to press fresh blood into the severed limb, and the disconnected part of the blood vessel is easy to be pulled off, so the connection method of the comparison document 1 is not ideal; ②Disconnected Limbs and limbs often produce body fluid clots, which are easy to block blood vessels, and the effect of bridging alone is not good for transfusion of severed limbs.

In addition, during ocean voyages or wars, the severed limbs are far away from the hospital. In the case of severed limbs, it is urgent to provide temporary bridging support for the severed limbs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a severed limb blood vessel bridge that can quickly bridge the severed limb and overcome the severe resistance of the severed limb infusion in view of the current situation of the above-mentioned prior art.

The technical solution adopted by the present invention to solve the above technical problems is: a disconnected limb vascular bridge, including a vein bridge device and an artery bridge device, wherein the vein bridge device includes:

The first delivery component is equipped with a thrombus breaking device for breaking the thrombus; the first bridging head is conductively connected between the first input end of the first delivery component and the severed limb vein;

The first output end of the first conveying component is conductively connected with a third bridging head or a waste liquid recovery device.

The present invention divides the blood vessels into: the patient's arterial vessel and patient's venous vessel located on the patient's body, the isolated limb arterial vessel and the isolated limb's venous vessel located on the severed limb.

When there is a patient accompanying the whole journey and the patient’s own blood is sufficient, the third bridging head is connected to the patient’s venous blood vessels. Since thrombus clots will increase the vascular resistance of the severed limb, the thrombus breaking device can break the thrombus and make the blood flow out of the severed limb The venous blood can smoothly circulate into the patient's body; during the whole process of accompanying the patient without using it, the first output end is directly connected to the waste liquid recovery device.

Artery grafting devices include:

The second conveying component is provided with a blood pressure boosting device;

The second bridging head is conductively connected between the second output end of the second delivery assembly and the artery of the severed limb;

The second input end of the second delivery component is connected to a fourth bridging head or a blood bag;

The structures of the first bridging head, the second bridging head, the third bridging head and the fourth bridging head are the same, including the lining tube inserted into the blood vessel and the barb embedded in the wall of the lining tube. The barbs prevent the blood vessel from protruding.

When there is a patient accompanying the whole journey and the patient's own blood is sufficient, the fourth bridging head bridges the patient's arteries; when there is no patient accompanying the whole journey, the second input end is directly connected to the blood bag, which supplies blood. Because the patient is weak and the blood vessel resistance of the severed limb is high, a blood booster device is provided in the second conveying assembly to pressurize the blood into the arteries of the severed limb.

In a preferred solution, the blunt end of the barb is connected with a linkage, and the outside of the inner liner is also provided with a traction piece for pulling the linkage. When not in use, the barb is hidden in the liner tube, which is convenient for the blood vessel to be inserted into the liner tube. When the liner tube and the blood vessel are sleeved, pull the traction piece, and the barb will pierce the liner tube and the blood vessel. Both are fixed.

In a preferred solution, the barb is provided with a limiter in the direction of its dumping, the linkage is a steel wire, a fixed seat is fixed on the inner liner, and a clip that limits the rebound of the traction member is provided between the traction member and the fixed seat. structure. Before the liner tube is inserted into the blood vessel, the barb is hidden in the liner tube. After the liner tube is inserted into the blood vessel, as long as the traction part is pulled, the linkage part will drive the barb. Gradually erect and puncture the liner and vessel, eventually securing the vessel to the outer wall of the liner.

In a preferred solution, the first conveying assembly includes a bolt-breaking tube, and the bolt-breaking device includes a shaft arranged axially along the bolt-breaking tube, and a plurality of spokes arranged on the shaft, the two ends of the spokes are fixed to the shaft, and the middle section is away from the shaft A cavity is formed between the spokes, and an impeller is arranged in the cavity, and the blood flows through the impeller to drive the spokes to rotate around the axis of the rotating shaft, and each spoke breaks the thrombus during the circular rotation.

In a preferred solution, each spoke includes a first inclined section and a second inclined section connected to the rotating shaft, the angle between the first inclined section and the second inclined section and the rotating shaft is an acute angle, and the first inclined section and the second inclined section respectively form an acute angle. The included angle between the second inclined sections is an obtuse angle, the first inclined section is provided with a first blade along the tangential direction of its own rotation, and the first inclined section is located upstream of the second inclined section. The first blade can cut the thrombus and guide the blood into the space surrounded by the spokes.

In a preferred solution, the second inclined section is provided with a second blade along the direction opposite to the tangent of its own rotation. The first blade is set to face the forward rotation direction, and the second blade is faced to the reverse direction. According to Bernoulli's principle, when the second blade is rotating, the second blade radiates the blood in the space surrounded by the spokes to the downstream. In this way, the first blade is responsible for shredding the thrombus, and the second blade is responsible for diverging blood, thereby ensuring that the blood in the vein of the severed limb can flow out smoothly from the second output end.

In a preferred solution, two arc-shaped bent inner walls are provided in the bolt-breaking tube, and the rotating shaft is erected on the arc-shaped bent inner wall, and one end of the bolt-breaking tube penetrates through the bolt-breaking tube, and a second electric drive device is transmission-connected. The second electric driving device can drive the rotating shaft, so that when the blood flow rate is low, the rotating shaft is electrically driven to rotate to actively break the thrombus. The curved inner wall can avoid the eddy current generated when the rotating shaft rotates, and can transport the blood in the breaking tube as soon as possible. In addition, because the rotating shaft runs through the breaking tube, there will be a gap between the rotating shaft and the breaking tube. The curved inner wall is conducive to the rapid delivery of blood, so the leakage is reduced.

In a preferred solution, the second transport assembly includes a hose for transporting arterial blood, and the blood pressure booster includes:

The base is provided with a groove for placing the hose;

The wheel frame is provided with several rollers, and the rollers periodically push the hose to pressurize the arterial blood. The roller rolls along the flow direction of the blood, simulating the pulse frequency to pressurize the blood, which can overcome the vascular resistance of the severed limb and facilitate the input of fresh blood into the severed limb.

In a preferred solution, the groove body is an arc-shaped groove arranged around the center of the wheel frame, and the number of rollers is more than four, and they are evenly distributed on the wheel frame. The curved groove can receive the push of the roller more frequently.

In a preferred solution, the wheel frame includes a first board and a second board clamped to the base by a gap, and the rollers are located between the first board and the second board. The first plate body and the second plate body can restrict the hose from leaving the groove body.

In a preferred solution, the trough faces the ground, the number of the wheel frame and the trough body is two respectively, and the wheel frame is connected with a first electric drive device. The effect of the trough facing the ground is great. Since the trough is arc-shaped, the fresh blood close to the roller in the same section of the hose will be pushed forward by the roller, and the fresh blood far away from the roller will fall to the roller due to gravity and continue to flow. It is pushed forward by the roller, so the fresh blood in the hose is not easy to cause deposition; if the tank is straight up, or the arc is upward, then the roller can only roll the blood on one side of the hose, and the other side of the hose blood will settle due to gravity.

In summary, compared with the prior art, the disconnected limb vascular bridge device of the present invention is designed with a vein bridge device and an artery bridge device, wherein the first delivery component of the vein bridge device is equipped with a thrombus breaking device It is used to break the thrombus; the first bridging head is conductively connected between the first input end of the first delivery assembly and the disconnected limb vein; the first output end of the first delivery assembly is conductively connected with a first Three bridge connectors or 1 waste recovery device. The second delivery assembly of the arterial bridging device is provided with a blood pressure booster; the second bridging head is conductively connected between the second output end of the second delivery assembly and the arterial vessel of the severed limb; the second delivery assembly of the second delivery assembly The input terminal is connected to a fourth bridge or a blood bag. In the case of an urgent need for temporary preservation of severed limbs, the device can be used to quickly bridge, pressurize and break the thrombus, thereby overcoming the problems of slow bridging speed and large infusion resistance. This device is very suitable for seagoing and war reserves.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of the first conveying assembly in Fig. 1;

Fig. 3 is a schematic diagram of the internal structure of the bolt breaking pipe;

Fig. 4 is a three-dimensional structural schematic diagram of a bolt breaking device;

Fig. 5 is a schematic diagram of the working state of the cross-sectional view of the thrombus being chopped by the first blade on the first inclined section during the working process of the thrombus breaking device;

Fig. 6 is a schematic diagram of the working state of the cross-sectional view of the second blade on the second inclined section scattering the plasma in the cavity during the working process of the thrombus breaking device;

Fig. 7 is a schematic diagram of the structure of the cooperation between the second delivery assembly and the blood pressurization device in Fig. 1;

Fig. 8 is an exploded schematic view of Fig. 7;

Figure 9 is a front view of Figure 7;

Fig. 10 is a structural schematic view of a first bridging head, a second bridging head, a third bridging head and a fourth bridging head;

Fig. 11 is a schematic diagram of clip opening in Fig. 10;

Figure 12 is an exploded schematic view of the barb, the limiter, the linkage and the traction member being separated from the inner liner;

Fig. 13 is a schematic diagram of a full cross-sectional structure of the first bridging head, the second bridging head, the third bridging head and the fourth bridging head;

Fig. 14 is a schematic diagram of the enlarged structure of part A in Fig. 13;

Fig. 15 is a schematic structural view of the blood pressure boosting device in Embodiment 4;

Figure 16 is a schematic diagram of the blood circulation formed by the patient and the severed limb in Embodiment 1;

Fig. 17 is a schematic bridge diagram of using a blood bag and a waste fluid recovery device to support a severed limb in Example 2 without the presence of the patient.

The reference numerals therein are: the first conveying assembly 1, the first input end 11, the first output end 12, the bolt breaking pipe 13, the curved inner wall 131, the second conveying assembly 2, the second input end 21, the first Second output end 22, hose 23, bolt breaking device 3, rotating shaft 31, spoke 32, first inclined section 321, second inclined section 322, impeller 33, first blade 34, second blade 35, second motor The driving device 37, the cavity 36, the first bridging head 41, the inner liner 411, the barb 412, the limit piece 413, the linkage piece 414, the fixing seat 415, the traction piece 416, the clamping structure 417, the clip 418, the second Bridging head 42, third bridging head 43, fourth bridging head 44, waste liquid recovery device 51, blood bag 52, blood booster device 6, base 61, tank body 611, wheel frame 62, first plate body 621 , second plate body 622, roller 63, first electric drive device 64, liquid pump 65, patient's arterial vessel 71, patient's venous vessel 72, severed limb arterial vessel 73, severed limb venous vessel 74, thrombus 91, plasma 92 .

detailed description

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

It should be noted that the term "comprising" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion, for example, a product comprising a series of units is not necessarily limited to clearly those listed, but may include other units not expressly listed or inherent to these products.

In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not intended to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in the present invention according to specific situations.

Furthermore, the terms "setting", "connecting" should be interpreted broadly. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a direct connection, or an indirect connection through an intermediary, or an internal communication between two devices, elements or components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The present invention divides the blood vessels into: the patient's arterial vessel 71 and the patient's venous vessel 72 located on the patient's body, the isolated limb arterial vessel 73 and the isolated limb's venous vessel 74 located on the severed limb.

Embodiment 1, a vascular bridge device for a severed limb, including a vein bridge device and an artery bridge device, wherein the vein bridge device includes:

As shown in Figure 1 and Figure 2, the first delivery assembly 1), as shown in Figure 3, the first delivery assembly 1) is provided with a thrombus breaking device 3) for breaking thrombus 91 clot; As shown in 16 and 17, the first bridging head 41) can be connected between the first input end 11) of the first delivery assembly 1) and the disconnected limb vein 74;

As shown in Figures 1, 2, and 16, the first output end 12) of the first conveying assembly 1) is conductively connected to a third bridging head 43)

When there is a patient accompanying the whole process, and the patient's own blood is sufficient, the third bridging head 43) connects the patient's venous blood vessel 72, because the thrombus 91 clot will increase the vascular resistance of the severed limb, the thrombus breaking device 3) can break the thrombus, The venous blood flowing out of the severed limb can circulate smoothly into the patient's body; as shown in Figures 1, 7, 8, and 9, the arterial bridge device includes:

The second conveying assembly 2), the second conveying assembly 2) is provided with a blood pressurization device 6);

The second bridging head 42), as shown in Figure 16 and Figure 17, the second bridging head 42) is conductively connected between the second output end 22) of the second delivery assembly 2) and the disconnected limb artery 73;

As shown in Figures 1, 7, 8, 9, and 16, the second input end 21) of the second conveying assembly 2) is conductively connected with a fourth bridging head 44);

The first bridging head 41), the second bridging head 42), the third bridging head 43) and the fourth bridging head 44) have the same structure, as shown in FIGS. ), the barb 412) embedded in the liner pipe 411) pipe wall, the linkage 414) connecting the blunt end of the barb 412), the traction member 416) for pulling linkage.

Both the first delivery assembly 1) and the second delivery assembly 2) have channels for blood circulation, and the lining tube 411) can be directly connected to the first output end 12), the second output end 22), the first input end 11) and the second output end 22), because the connection structures of the first input end 11), the second input end 21), the first output end 12), the second output end 22) and other pipe fittings are all prior art, implementation example Countless, and not the technical solution to be protected in the present invention, so the present invention no longer elaborates its structure.

When there is a patient accompanying the whole journey, and the patient's own blood is sufficient, the fourth bridging head 44) bridges the patient's arterial vessel 71; because the patient is weak and the blood vessel resistance of the severed limb is large, so the second delivery assembly 2) is set There is a blood pressurization device 6), which pressurizes the blood into the severed limb arterial vessel 73.

In the embodiment, as shown in the figure, the first conveying assembly 1) includes a thrombus breaking tube 13), and the thrombus breaking device 3) includes a rotating shaft 31) axially arranged along the thrombus breaking tube 13), and is arranged on the rotating shaft 31). Some spokes 32), the two ends of the spokes 32) are fixed on the rotating shaft 31), the middle section deviates from the rotating shaft 31) so that a cavity 36) is formed between the spokes 32), the cavity 36) is provided with an impeller 33), the impeller 33 ) is fixed on the rotating shaft 31), and the blood flows through the impeller 33) to drive the spokes 32) to rotate around the axis of the rotating shaft 31), and each spoke 32) crushes the thrombus 91 in the process of circular rotation.

In the embodiment, as shown in Fig. 7 to Fig. 9, the second conveying assembly 2) includes a hose 23) for conveying arterial blood, and the blood booster device 6) includes:

The base 61) is provided with a groove body 611) for placing the hose 23);

The wheel frame 62) is provided with several rollers 63), and the rollers 63) periodically push the flexible pipe 23) to pressurize the arterial blood. The roller 63) rolls along the flow direction of the blood, simulating the pulse frequency to pressurize the blood, which can overcome the vascular resistance of the severed limb and facilitate the input of fresh blood into the severed limb.

In the embodiment, as shown in FIGS. 7 to 9 , the groove body 611) is an arc-shaped groove arranged around the center of the wheel frame 62), and the number of rollers 63) is more than four, and they are evenly distributed on the wheel frame 62. )superior. The arc groove can have more frequencies to accept the pushing of the roller (63).

In the embodiment, as shown in FIG. 7 to FIG. 9 , the wheel frame 62) includes a first plate body 621) and a second plate body 622) clamped to the base 61) in a gap, and the roller 63) is located on the first plate body 621 ) and the second plate body 622). The first plate body 621) and the second plate body 622) can restrict the hose 23) from leaving the groove body 611).

In the embodiment, as shown in FIGS. 7 to 9 , the tank body 611) faces the ground, the number of the runner frame 62) and the tank body 611) are two respectively, and the runner frame 62) is connected with the first electric drive device 64 ). The trough body 611) has a great effect towards the ground, because the trough body 611) is arc-shaped, so the fresh blood close to the roller 63) in the same section of the hose 23) will be pushed forward by the roller 63), away from the roller 63) The fresh blood will fall to the roller 63) due to gravity, and continue to be pushed forward by the roller 63), so the fresh blood in the hose 23) is not easy to cause deposition; if the groove 611) is straight upward, or the arc is facing Then, the roller 63) can only roll the blood on one side of the flexible tube 23), and the blood on the other side of the flexible tube 23) will be deposited due to gravity.

In the embodiment, as shown in FIG. 3 and FIG. 4 , each spoke 32) includes a first inclined segment 321) and a second inclined segment 322) connected to the rotating shaft 31), and the first inclined segment 321) and the second inclined segment The included angles between segments 322) and the rotating shaft 31) are acute angles, the included angles between the first inclined segment 321) and the second inclined segment 322) are obtuse angles, and the first inclined segment 321) is provided along the tangential direction of its own rotation. The first blade 34), the first inclined section 321) are located upstream of the second inclined section 322). As shown in FIG. 5 , the first blade 34) can cut the thrombus 91 and guide the blood into the cavity 36) surrounded by the spokes 32).

In the embodiment, as shown in FIG. 3 and FIG. 4 , the second inclined section 322) is provided with a second blade 35) along the direction opposite to the tangent of its own rotation. Assuming as shown in Figure 5, the first blade 34) faces the forward rotation direction; as shown in Figure 6, the second blade 35) faces the reverse direction. According to Bernoulli's principle, as shown in FIG. 6 , during the rotation of the second blade 35 ), the second blade 35 ) radiates the blood in the cavity 36 ) surrounded by the spokes 32 ) to the downstream. In this way, the first blade 34) is responsible for shredding the thrombus 91, and the second blade 35) is responsible for diverging blood, thereby ensuring that the blood in the severed limb vein 74 can flow out smoothly from the second output port 22).

In the embodiment, as shown in FIG. 3 , two arc-shaped bent inner walls 131) are provided in the bolt-breaking tube 13), the rotating shaft 31) is mounted on the arc-shaped bent inner wall 131), and one end runs through the bolt-breaking tube 13) , and transmission connection with the second electric drive device 37). The second electric driving device 37) can drive the rotating shaft 31), so that when the blood flow rate is low, the rotating shaft 31) is electrically driven to rotate to actively break the thrombus. The arc-shaped bending inner wall 131) can avoid the eddy current generated when the rotating shaft 31) rotates, and the blood in the thrombus breaking tube 13) can be transported out as soon as possible. In addition, because the rotating shaft 31) runs through the thrombus breaking tube 13), the rotating shaft 31) and the thrombus breaking tube 13) There are gaps between the embolus breaking tubes 13), and the arc-shaped bending inner wall 131) is conducive to sending blood out quickly, so the leakage is reduced.

In the embodiment, as shown in Fig. 12 to Fig. 14 , the barb 412) is provided with a limiting member 413) in its dumping direction, the linkage member 414) is a steel wire, and the inner liner 411) is fixed with a fixed seat 415), A clamping structure 417) is provided between the traction member 416) and the fixed seat 415) to limit the rebound of the traction member 416). Before the inner liner 411) is inserted into the blood vessel, the barb 412) is hidden in the inner liner 411), when the inner liner 411) is inserted into the blood vessel, as long as the traction member 416) is pulled, the linkage member 414) drives the barb 412 ), the barb 412) due to the limiting effect of the limiting member 413), thereby gradually erecting and puncturing the lining tube 411) and the blood vessel, and finally fixing the blood vessel to the outer wall of the lining tube 411).

In the embodiment, as shown in FIG. 10 to FIG. 13 , in order to increase the connection force between the lining tube 411) and the blood vessel, the fixing base 415) is provided with a clip 418) clamping to the blood vessel and the lining tube 411).

The usage method of Embodiment 1: when there is a patient accompanying the whole process and the patient’s own blood is sufficient, first bridge the first bridging head 41) into the vein 74 of the severed limb, and then bridge the second bridging head 42) into the severed limb artery 73, then bridge the third bridging head 43) into the patient's venous blood vessel 72, and finally bridge the fourth bridging head 44) into the patient's arterial blood vessel 71.

Start the thrombus breaking device 3) to remove the thrombus from the blood flowing out from the venous blood vessel 74 of the severed limb, and start the blood booster device 6) to pressurize the blood input into the arterial blood vessel 73 of the severed limb.

Embodiment 2, embodiment 2 is similar to embodiment 1, the only difference is that the third bridging head 43) and the fourth bridging head 44) are removed, as shown in Figure 17, the first output end 12) is directly connected to a waste liquid The recovery device 51), the second input end 21) is directly connected to the blood bag 52).

The usage method of Embodiment 2: when the patient is not present or the patient's own blood is insufficient, first bridge the first bridging head 41) into the vein of the disconnected limb 74, and then bridge the second bridging head 42) into the disconnected limb vein Cut off the limb artery 73, then directly connect the first output end 12) to the waste liquid recovery device 51), and finally connect the second input end 21) directly to the blood bag 52), and the blood is supplied by the blood bag 52).

Start the thrombus breaking device 3) to remove the thrombus from the blood flowing out from the venous blood vessel 74 of the severed limb, and start the blood booster device 6) to pressurize the blood input into the arterial blood vessel 73 of the severed limb.

Embodiment three, the structure of embodiment two is similar to embodiment one, and difference is that breaking device 3), the breaking device 3) of embodiment two is ultrasonic vibrating device, but effect is not as good as embodiment one.

Embodiment 4, the structure of embodiment 3 is similar to embodiment 1, the difference lies in the blood booster device 6), as shown in Figure 15, the blood booster device 6) of embodiment 3 is arranged in the hose 23) The liquid pump 65) is used to pump the blood into the severed limb arterial vessel 73 by the liquid pump 65).

The present invention can be arranged in a portable suitcase, which is convenient for emergency feeding of severed limbs during ocean voyages, expeditions and wars.

The preferred embodiment of the present invention has been illustrated, and various changes or modifications may be made by those skilled in the art without departing from the scope of the present invention.

Claims (10)

1. A disconnected limb vascular bridge, comprising a vein bridge device and an artery bridge device, wherein the vein bridge device comprises: The first conveying component (1) is provided with a thrombus breaking device (3) for breaking thrombus (91) clots; The first bridging head (41) is conductively connected between the first input end (11) of the first delivery assembly (1) and the severed limb vein (74); The first output end (12) of the first conveying component (1) is conductively connected with a third bridging head (43) or a waste liquid recovery device (51); The arterial grafting device includes: The second conveying component (2) is provided with a blood booster (6); The second bridging head (42) is conductively connected between the second output end (22) of the second delivery assembly (2) and the severed limb artery (73); The second input end (21) of the second delivery assembly (2) is conductively connected with a fourth bridging head (44) or a blood bag (52); The structures of the first bridging head (41), the second bridging head (42), the third bridging head (43) and the fourth bridging head (44) are the same, including the lining tube (411) inserted into the blood vessel , the barb (412) embedded in the wall of the liner pipe (411). 2. The disconnected limb vascular bridge according to claim 1, characterized in that: the blunt end of the barb (412) is connected with a linkage (414), and the outside of the lining tube (411) A traction member (416) for pulling linkage is also provided. 3. The disconnected limb vascular bridge according to claim 2, characterized in that: the barb (412) is provided with a limiter (413) on its tipping direction, and the linkage (413) 414) is a steel wire, the fixed seat (415) is fixed on the inner lining pipe (411), and the restricting traction member (416) is set between the traction member (416) and the fixed seat (415) Rebound locking structure (417). 4. A severed limb vascular bridge according to claim 1, characterized in that: the first delivery assembly (1) includes a thrombus breaking tube (13), and the thrombus breaking device (3) includes A rotating shaft (31) arranged axially along the bolt breaking pipe (13), and several spokes (32) arranged on the rotating shaft (31), the two ends of the spokes (32) are fixed to the rotating shaft (31 ), the middle section deviates from the rotating shaft (31) so that a cavity (36) is formed between the spokes (32), the cavity (36) is provided with an impeller (33), and the blood flows through the impeller (33) to drive the spokes ( 32) rotate around the shaft (31) axis. 5. A broken limb vascular bridge according to claim 4, characterized in that: each spoke (32) comprises a first inclined section (321) and a second inclined section (321) connected on the rotating shaft (31) 322), the angle between the first inclined section (321) and the second inclined section (322) and the rotating shaft (31) is an acute angle, and the first inclined section (321) and the second inclined section (322) The angle between them is an obtuse angle, and the first inclined section (321) is provided with a first blade (34) along the tangential direction of its own rotation, and the first inclined section (321) is located at the second inclined section (322 ) upstream. 6. The bridge device for severed limb vessels according to claim 5, characterized in that: said second inclined section (322) is provided with a second blade (35) along the direction opposite to the tangent of its own rotation. 7. The disconnected limb vascular bridge according to claim 6, characterized in that: said thrombus breaking tube (13) is provided with two arc-shaped bent inner walls (131), and said rotating shaft ( 31) erected on the arc-shaped bent inner wall (131), and one end passes through the bolt-breaking tube (13), and is transmission-connected with a second electric drive device (37). 8. A severed limb vascular bridge according to claim 1, characterized in that: said second transport assembly (2) includes a hose (23) for transporting arterial blood, and said blood pressurization device (6) including: The base (61) is provided with a groove (611) for placing the hose (23); The wheel frame (62) is provided with several rollers (63), and the rollers (63) periodically push the flexible pipe (23) to pressurize the arterial blood. 9. A severed limb vascular bridge according to claim 8, characterized in that: said groove body (611) is an arc-shaped groove arranged around the center of the wheel frame (62), and said roller The number of (63) is more than 4, and evenly distributed on the wheel frame (62); the wheel frame (62) includes the first plate (621) clamped to the base (61) by the gap ) and the second plate (622), the roller (63) is located between the first plate (621) and the second plate (622). 10. A bridge for severed limb vessels according to claim 9, characterized in that: the groove body (611) faces the ground, and the number of the rotating wheel frame (62) and the groove body (611) There are 2 respectively, and the described wheel frame (62) is connected with the first electric driving device (64).

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