CN114869384A

CN114869384A - Segmental hemostatic device implanted in blood vessel

Info

Publication number: CN114869384A
Application number: CN202210423605.6A
Authority: CN
Inventors: 张学民; 郭维; 郭辅政; 李明; 李伟浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-08-09

Abstract

An endovascular implanted segmental hemostatic device comprising: the outer sleeve is provided with a hemostatic end at one end; the covered stent is arranged in the hemostatic end; the operating handle is connected with the other end of the outer sleeve, and the operating handle is hollow and communicated with the outer sleeve; the first water filling port is arranged on the operating handle; the push-pull rod is arranged in the outer sleeve, one end of the push-pull rod is connected with the film covered bracket, and the other end of the push-pull rod is connected with the operating handle; the guide wire is arranged in the push-pull rod and can move along the push-pull rod; and injecting physiological saline through the first water injection port so as to keep an aseptic liquid environment in the outer sleeve and the operating handle. Therefore, the outer sleeve is communicated with the operating handle, and the sterile liquid environment can be kept in the outer sleeve and the operating handle by injecting the physiological saline into the first water injection port phase operating handle, so that bacterial infection caused by operation of the operating handle is avoided.

Description

Segmental hemostatic device implanted in blood vessel

Technical Field

The invention relates to the technical field of medical instruments, in particular to a segmental hemostatic device implanted in a blood vessel.

Background

With the continuous progress of scientific technology and medical level, the coping measures of people for a plurality of diseases are continuously increased, and the cure rate of the diseases is also continuously improved. For traumatic patients, first, emergency hemostasis is performed to prevent shock and death due to excessive blood loss. If the bleeding part is outside the body, the blood vessel can be pressed by fingers or a tourniquet so as to stop bleeding of the blood vessel, and then the blood vessel is sent to a hospital for treatment. In case of intra-abdominal bleeding, a hemostatic tube with a balloon is usually inserted into the aorta of a human body to expand the balloon at a predetermined position to block the aorta and reduce the bleeding part of blood entering into the abdominal cavity, thereby achieving hemostasis of intra-abdominal wounds. However, wound bleeding in the abdominal cavity is usually caused by specific scenes such as traffic accidents, high-altitude falling or battlefield bullets, and in order to stop bleeding in time, when the blocking balloon is used for stopping bleeding during puncture, the blocking balloon needs to be operated on a first site or an emergency ambulance, so that the blocking balloon is not easy to accurately place, the effect is uncertain, and bacterial infection is easily caused by an exposed part.

Meanwhile, since a plurality of branches are formed at different positions of the aorta, for example, the spleen artery, the hepatic artery, the superior mesenteric artery, the renal artery, and the like. The visceral organs in the human body obtain fresh blood through each branch connected to the aorta, if the proximal aorta is blocked by the balloon, blood supply cannot be obtained for bleeding parts in the abdominal cavity, and blood supply cannot be obtained for visceral organs and lower limbs on the far end side of the balloon. Because the organs can not be in ischemia and hypoxia states for a long time, if the organs are in ischemia and hypoxia for too long time, a large amount of metabolites can be generated, the organ functions are damaged, and even the function failure can be caused. Therefore, after the aorta is blocked by the balloon for a while, the balloon needs to be controlled to contract, so that blood flows into each organ through the aorta for a while, and the organ is prevented from being damaged by ischemia and anoxia for a long time. The balloon is then controlled again to inflate to occlude the aorta to continue hemostasis. Therefore, the hemostatic tube needs to be operated for many times in the hemostatic process, and the risk of bacterial infection and the risk of repeated fluctuation of blood pressure are further increased.

Disclosure of Invention

In view of the above, the main object of the present invention is to provide an intravascular implanted segmental hemostatic device that can reduce the risk of bacterial infection when hemostasis is performed on the first organ in the abdominal cavity by trauma.

The present application provides in a first aspect an intravascular implanted segmental hemostatic device comprising: an outer sleeve, one end of the outer sleeve being a hemostatic end; a stent graft disposed within the hemostatic end; the operating handle is connected with the other end of the outer sleeve, the inside of the operating handle is hollow, and the operating handle is communicated with the outer sleeve; the first water filling port is arranged on the operating handle; the push-pull rod is arranged in the outer sleeve, one end of the push-pull rod is connected with the film coating bracket, and the other end of the push-pull rod is connected with the operating handle; the guide wire is arranged in the push-pull rod and can move along the push-pull rod; after the hemostasis end enters a blood vessel, physiological saline is injected through the first water injection port, so that a sterile liquid environment is kept in the outer sleeve and the operation handle. Therefore, the covered stent can be arranged in the aorta, and the covered membrane on the covered stent is attached to the connecting position of the first branch and the aorta, so that blood in the aorta is prevented from entering the first branch, and hemostasis on the first organ is realized. Meanwhile, the blood in the aorta can flow through the inside of the stent, so that the blood can be obtained from the aorta without influencing the second organ and the lower limb muscle group. Therefore, the influence on the second organ and the lower limb muscle group when the first organ is subjected to hemostasis can be avoided, and the generation of a large amount of acidic metabolic waste and the increase of the burden of the liver and kidney can be avoided. Meanwhile, the outer sleeve is communicated with the operating handle, and the sterile liquid environment can be kept in the outer sleeve and the operating handle by injecting the physiological saline into the first water injection port phase operating handle, so that bacterial infection caused by operation of the operating handle is avoided.

As a possible implementation manner of the first aspect, the operation handle includes: a first operation section; a telescoping section that is extendable and compressible; a second operation section; the first operation part, the telescopic part and the second operation part are sequentially connected in a cylindrical shape; the end part of the first operating part is connected with the other end of the outer sleeve, and the end part of the second operating part is closed; the push-pull rod is connected with the second operation portion. From above, provide the concrete structure of operation handle, through setting up the pars contractilis, can make first operation portion and second operation portion can realize relative movement. Meanwhile, the outer sleeve is connected with the first operating part, and the push-pull rod positioned in the outer sleeve is connected with the second operating part, so that the covered stent can be pushed out from the hemostatic end or pulled into the covered stent again through the movement between the first operating part and the second operating part. Therefore, the operation handle can be ensured not to be in contact with the outside in the process of using the operation handle, and bacterial infection caused by operation by using the operation handle is avoided.

In one possible implementation manner of the first aspect, the length of the expansion and contraction portion in the expansion and contraction direction is greater than or equal to the length of the stent graft. Therefore, the first operating part and the second operating part can be displaced by a sufficient relative displacement length, so that the push-pull rod can push the covered stent out of the hemostasis end or pull the covered stent into the hemostasis end.

As a possible implementation manner of the first aspect, the expansion part is made of a transparent material. This facilitates observation of the inside of the operation handle.

As a possible implementation manner of the first aspect, the first water injection port has one or more ports. Thus, a drug, a contrast agent, or the like can be injected as needed along with the injection of the physiological saline.

As a possible implementation manner of the first aspect, after the push-pull rod pushes the stent graft out of the hemostatic end, the stent graft automatically expands to abut against the blood vessel. This can prevent blood from entering the first branch vessel and then flowing out of the wound of the first organ through the cover.

As a possible implementation manner of the first aspect, the stent graft is detachably connected to the push-pull rod. Can separate with the support after pushing out in the sheath pipe with the tectorial membrane support at the push rod, can avoid transporting injured personnel's in-process, because certain action arouses the removal of push rod and make the support take place to remove, influence hemostatic effect.

As a possible realization of the first aspect, the end of the hemostatic end is flared. Therefore, the covered stent can be conveniently drawn into the sheath.

As a possible implementation manner of the first aspect, the hemostatic tip further includes a reinforcing ring disposed on an outer peripheral surface of the end portion of the hemostatic tip. Therefore, the strength of the hemostatic end can be increased, and the hemostatic end is prevented from deforming when being drawn into the covered stent.

As a possible implementation manner of the first aspect, a second water filling port is provided at the other end of the push-pull rod outside the operation handle, and the guide wire enters and exits from the second water filling port. Therefore, blood return in the push-pull rod can be avoided, and blood is prevented from being coagulated into blocks in the push-pull rod.

Drawings

FIG. 1 is a schematic view of a use scenario for hemostasis using the hemostatic device of the present application;

FIG. 2 is a schematic view of different states of hemostasis using a hemostatic device;

FIG. 3 is a schematic view of hemostasis using a hemostasis device in an embodiment of the present application;

fig. 4 is a flow chart of hemostasis using a hemostasis device in an embodiment of the present application.

Description of the reference numerals

The aorta 110; a first organ 120; a first branch 130; a second organ 140; a second branch 150; a hemostatic device 200; an outer sleeve 210; a first chamber 211; a hemostatic end 212; a reinforcement ring 213; an operating handle 220; a second cavity 221; a first operation portion 222; a telescopic part 223; a second operation portion 224; a first water injection port 225; a push-pull rod 230; a third cavity 231; a first connection end 232; a second water injection port 233; a guide wire 240; a stent graft 250; a holder 251; a covering film 252; a tensioning wire 253; and a second connection end 254.

Detailed Description

The terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The specific structure of the intravascular implanted segmental hemostatic device of the present application is described in detail below with reference to the drawings.

Fig. 1 is a schematic view of a hemostatic device 200 according to an embodiment of the present disclosure. As shown in fig. 1, different organs such as the heart, lung, stomach, spleen, pancreas, gallbladder, and large intestine are present in the abdominal cavity of a human body, and an aorta 110 is connected to the heart, and each organ is connected to the aorta 110 via a branch vessel. The heart beats to output blood, which can be transported to various organs and lower limb muscles in the human body via the aorta 110 and the branch vessels connected to the aorta 110. When the abdominal cavity is injured due to a traffic accident, a high-altitude fall or a battlefield missile, blood obtained by the aorta 110 through the first branch vessel 130 from the injured first visceral organ 120 continuously flows out from the wound position, and at the moment, hemostasis needs to be performed in time to avoid shock and death caused by excessive blood loss. In this case, the femoral artery or other blood vessel may be punctured in vitro, and then the stent graft 250 of the hemostatic device 200 of the present invention may be placed along the blood vessel at the position where the first branch 130 corresponding to the first organ 120 is connected to the aorta 110 (i.e., the inlet of the first branch 130), and the inlet of the first branch 130 may be closed by the stent graft 250, so that blood cannot flow into the first branch 130 from the aorta 110, thereby achieving the purpose of hemostasis. At the same time, blood can pass through the middle of the stent graft 250, so that the second organ 140, which is not injured, can obtain desired blood from the aorta 110 through the corresponding second branch 150.

Fig. 2 is a schematic structural view of different states of hemostasis using the hemostasis device 200, and shows a specific structure of the hemostasis device 200 in different states when hemostasis is performed using the hemostasis device 200 of fig. 1. As shown in fig. 2, the hemostatic device 200 in the present embodiment includes: an outer cannula 210, a handle 220, a push-pull rod 230, a guide wire 240, and a stent graft 250. The outer sleeve 210 may be a transparent hose of an indefinite length, and the inner portion of the outer sleeve 210 has a first cavity 211. The diameter of the outer sleeve 210 is smaller than the diameter of the blood vessel so that the outer sleeve 210 can be moved along the blood vessel to a predetermined position within the blood vessel. One end of the outer sleeve 210 is a hemostatic end 212, the hemostatic end 212 can receive and release the stent graft 250, and the port of the hemostatic end 212 is flared so that the stent graft 250 can be received and released by the hemostatic end 212. On the outer peripheral surface of the port position of hemostasis end 212, still overlap the cover and be equipped with a circular ring form beaded finish 213 in the position that is close to tubaeform structure, beaded finish 213 can be made by materials such as metal, and the hardness of beaded finish 213 is greater than outer tube 210 to can strengthen the port position of hemostasis end 212, accomodate tectorial membrane support 250 in order to guarantee smoothly. The other end of the outer sleeve 210 is connected to a lever 220.

The handle 220 has a cylindrical structure as a whole, and the handle 220 has a second cavity 221 inside. The axis of the lever 220 may be arranged to coincide with the axis of the outer tube 210, and the lever 220 may be divided into a first operation portion 222, an extendable portion 223, and a second operation portion 224 in the axial direction. The expansion part 223 may be made of transparent silicone, and the expansion part 223 has a folding structure and can be extended and compressed. The first operation portion 222 is connected to the other end of the outer tube 210, so that the first cavity 211 is communicated with the second cavity 221. The second handle portion 224 is closed at its end to ensure that the second cavity 221 in the handle 220 and the first cavity 211 in the outer sleeve 210 are maintained in a sterile environment. The second operation part 224 is further provided with a first water filling port 225 on an outer peripheral surface thereof, and the first water filling port 225 communicates with the second chamber 221, and may be a two-way pipe, a three-way pipe, or a member having another number of openings, which is connected to the second operation part 224. Physiological saline can be injected into the operation handle 220 through the first injection port 225 to prevent blood from flowing back into the first cavity 211 and the second cavity 221 to be coagulated into a block. Contrast media may also be injected into the handle 220 through the first fill port 225 to pass through the outer cannula 210 into the vessel for fluoroscopy by the fluoroscopy device.

The push-pull rod 230 is disposed inside the outer sleeve 210 and the operating handle 220 and fixedly connected to the second operating portion 224, the push-pull rod 230 has a third cavity 231 disposed therein along the axial direction, and the guide wire 240 is movable along the third cavity 231 inside the push-pull rod 230. One end of the push-pull rod 230 extends to the hemostatic end 212 of the outer cannula 210 to form a first connection end 232, and the first connection end 232 is removably connected to the stent graft 250 within the hemostatic end 212. The other end of the push-pull rod 230 is provided with a second water injection port 233, the second water injection port 233 extends from the end of the second operation portion 224, and the physiological saline can be injected into the third cavity 231 through the second water injection port 233 to prevent the blood from flowing back to the inside of the third cavity 231 and being coagulated into a block. The guide wire 240 may also be exposed by the second fill port 233 for delivery, withdrawal, or direction control of the guide wire 240.

The stent graft 250 includes a stent 251 having a mesh-like structure as a whole, and a stent graft 252 is provided on the outer or inner surface of the stent 251. One end of the bracket 251 is provided with a plurality of tightening wires 253, the plurality of tightening wires 253 are uniformly distributed at the end position of one end of the bracket 251, one end of the plurality of tightening wires 253 is connected with the bracket 251, and the other end of the plurality of tightening wires 253 is connected with the second connecting end 254. The second connection end 254 can be detachably connected to the first connection end 232 by a screw connection, a snap connection, or a hook connection. Thus, the stent graft 250 can be pushed out of the outer sleeve 210 by the push-pull rod 230 to complete the release, and can be separated from the stent graft 250 after the release is completed; or after the push-pull rod 230 is connected to the released stent graft 250, the stent graft 250 is pulled back into the outer cannula 210 to complete the retrieval.

After the stent graft 250 is released from the connection of the first branch 130 to the aorta 110, the stent 251 may be expanded so that the stent graft 252 on the stent 251 may abut the inner surface of the aorta 110. Thus, the cover 252 is attached to the position where the first branch 130 and the aorta 110 are connected, and blood in the aorta 110 is prevented from flowing into the first branch 130, thereby achieving hemostasis of the first organ 120. At the same time, blood can be ensured to pass through the inside of the stent 251, and can flow into the second organ 140 through the second branch vessel 150, so that the second organ 140 can normally operate.

The support 251 may be a self-expanding support 251. That is, the stent 251 is first formed by heat treatment outside the body, then the stent 251 is crimped into the hemostatic end 212 of the outer sheath 210, and after reaching the predetermined position of the patient, the stent 251 is pushed out of the outer sheath 210, and the stent 251 automatically expands to return to its pre-crimped shape so that the cover 252 on the stent 251 can be attached to the inner surface of the aorta 110.

The stent 251 may be made of metal tantalum, medical stainless steel, nickel titanium alloy or other materials, and the covering film 252 may be made of polymer materials with good biocompatibility, such as e-PTFE (expanded polytetrafluoroethylene), FEP (fluorinated ethylene propylene copolymer), PET (polyester resin), and the like. The material of the stent 251 and the cover 252 is not limited in this application.

Further, the cover 252 may cover the entire area of the inner or outer surface of the stent 251, or may cover a partial area of the inner or outer surface of the stent 251. In use, the cover 252 may be controlled to be positioned in a location corresponding to the connection of the first branch 130 with the aorta 110 to achieve hemostasis.

Further, the hemostatic device 200 of the present application is not limited to being installed in the aorta 110, but may be installed in any branch vessel or venous vessel according to the wound site and need, and is not limited thereto.

Further, the hemostatic device 200 of the present application can also install the stent 251 at the blood vessel wound position when the blood vessel is subjected to wound bleeding, so that the stent 251 and the covering film 252 form an artificial blood vessel, and can ensure normal circulation of blood in the blood vessel while achieving hemostasis.

FIG. 3 is a schematic illustration of hemostasis using a hemostasis device 200 in an embodiment of the present application;

fig. 4 is a flow chart of hemostasis using the hemostasis device 200 in an embodiment of the present application. As shown in fig. 3 and 4, taking the traumatic bleeding of the first organ 120 as an example, the specific steps of hemostasis for the first organ 120 include:

and step S101, determining a wound position.

When a patient accidentally causes the first internal organ 120 in the abdominal cavity to bleed due to an accident such as a car accident and a high-altitude fall, or a soldier explodes or causes the first internal organ 120 in the abdominal cavity to bleed due to a medium bullet in a war scene, the wounded person is rescued under the condition that the wounded person is not enough in the accident site or the battlefield environment, so that medical personnel or medical soldiers in the accident site need to confirm the wounded position of the wounded person firstly, namely, the wounded internal organs in different internal organs such as the heart, the lung, the stomach, the spleen, the pancreas, the gall bladder and the large intestine are determined. Since the connecting positions of the corresponding branches of different organs and the aorta 110 are different and the distances between the branches and the aorta are relatively fixed, the medical staff can determine the lengths of the guide wire 240 and the outer cannula 210 to be delivered into the blood vessel according to the height of the injured person and the type of the injured first organ 120. So as to deliver the stent graft 250 to the entrance position of the first vein 130 for emergency hemostasis to prolong the survival time of the injured person, so as to deliver the injured person to the hospital for treatment in time.

Further, the distance between the major branches of the abdominal viscera is close, on the order of a few centimeters, and variations may exist that cause variations in distance. Therefore, it is difficult to accurately cover the entry site of a first vessel 130 by placing the stent graft 250 without accurate visualization or CTA (Computed Tomography Angiography). Thus, a larger sized stent graft 250 may be used to cover an area of the first vein 130 at the ostium by the stent graft 250 to provide emergency hemostasis. Meanwhile, the second organ 140 can be perfused a small amount through the internal iliac artery, the lumbar artery and the like, so that the ischemia time of the second organ 140 is prolonged, and the survival time of the injured person is prolonged, so that the injured person can be sent to a hospital for treatment in time.

Step S102, puncture, deliver hemostasis end 212 to the entry site of first branch 130.

The radial artery, medial femoral artery, or other suitable blood vessel is punctured outside the body and a guidewire 240 is advanced along the blood vessel. The leading wire 240 can be steered along the vessel to the entry location of the first branch 130 by controlling the head of the leading wire 240.

The outer sleeve 210 is advanced along the guidewire 240 into the vessel such that the outer sleeve 210 reaches the entry location of the first branch 130 along the guidewire 240. At this time, the hemostatic device 200 is in a state shown in fig. 2 (a), the stent graft 250 is located inside the hemostatic end 212, the stent graft 250 is connected to the push-pull rod 230, and the guide wire 240 is located inside the push-pull rod 230. At this time, the guide wire 240 may be selectively withdrawn or may be retained, which is not limited herein.

Step S103, releasing the holder 251.

As shown in fig. 2 (b), after the hemostatic tip 212 is delivered to the entrance position of the first vein 130, the operation handle 220 is controlled to hold the second operation portion 224 fixed, the first operation portion 222 is gradually moved closer to the second operation portion 224, the expansion portion 223 is compressed, and the overtube 210 is partially withdrawn from the blood vessel. At this time, the stent graft 250 in the hemostatic end 212 is kept stationary under the pushing of the push-pull rod 230, and the hemostatic end 212 of the outer sleeve 210 continuously contracts back, thereby completing the release of the stent graft 250. Thus, the stent graft 250 may remain stationary with the vessel when released, avoiding damage to the vessel.

Further, the telescoping portion 223 may be compressed a distance greater than or equal to the length of the stent graft 250, thereby ensuring that the stent graft 250 is fully released from within the hemostatic end 212.

Step S104 is to expand the stent 251 so that blood cannot enter the first organ 120.

As shown in fig. 2 (c) and 3, in the case of the self-expandable stent 251, the stent 251 is heat-treated and shaped in vitro, and then the stent 251 is crimped in the hemostatic end 212 of the outer sleeve 210, and after the hemostatic end 212 reaches the entrance position of the first artery 130 and the stent graft 250 is released, the stent 251 can automatically expand to restore its pre-crimped shape, so that the stent 252 on the stent 251 can be attached to the inner surface of the aorta 110.

Thus, the cover 252 can be attached to the position where the first branch 130 and the aorta 110 are connected, so that blood in the aorta 110 cannot enter the first branch 130, and hemostasis can be achieved for the first organ 120. At the same time, the blood in the aorta 110 can pass through the inside of the stent 251, so that the blood can be supplied to the second organ 140 through the second branch 150 normally, and the operation on the first organ 120 is prevented from affecting the second organ 140.

Step S105, the bracket 251 is separated from the push-pull rod 230.

The stent graft 250 is detachably connected with the push-pull rod 230, and after the stent graft 251 is used for hemostasis, the stent graft 251 can be controlled to be separated from the push-pull rod 230, so that the phenomenon that the injury person touches the push-pull rod 230 to stop bleeding when transporting the injury person is avoided.

Further, the bracket 251 and the push-pull rod 230 may not be separated after hemostasis is completed, so that the operation process is reduced, and accidents caused by operation errors are avoided.

And step S106, lasting for a first time interval.

Since the first organ 120 cannot be in an ischemic or hypoxic state for a long time, if the first organ 120 is ischemic or hypoxic for a long time, various complications may occur, which may damage the function of the first organ 120 or even cause functional failure. Therefore, the time for stopping bleeding of the first organ 120 cannot exceed the first time interval. The duration of the first time interval may be 20 minutes, 30 minutes or other duration set according to the characteristics and requirements of the first organ 120 itself, and is not limited herein.

Step S107, the bracket 251 is connected to the push-pull rod 230.

If the separation between the holder 251 and the push-pull rod 230 is performed after hemostasis is completed, the holder 251 and the push-pull rod 230 need to be reconnected after the first time interval is over.

Step S108, the stent graft 250 is pulled into the hemostatic end 212.

The operation handle 220 is controlled to keep the second operation portion 224 fixed, and the first operation portion 222 is operated to move away from the second operation portion 224 gradually, so that the expansion portion 223 expands, and the first operation portion 222 pushes the outer tube 210 to deliver into the blood vessel. Since the stent graft 250 is kept still under the push of the push-pull rod 230, the hemostatic end 212 is continuously moved toward the stent graft 250, so that the stent graft 250 is retracted into the hemostatic end 212, and the hemostatic device 200 is restored to the state shown in fig. 2 (a). This allows the cover 252 on the stent 251 to be separated from the aorta 110, and allows blood in the aorta 110 to enter the first organ 120 through the first branch 130. This allows the first organ 120 to regain the blood supply, thereby preventing the first organ 120 from being in an ischemic or hypoxic state for a long time and from impairing the function of the first organ 120.

And step S109, lasting for a second time interval.

The blood supply to the first organ 120 is continued for a second time interval, which may be 5 minutes, 10 minutes or other time period set according to the characteristics and requirements of the first organ 120 itself, in order to allow the first organ 120 to obtain sufficient blood, in accordance with the influence of the blood loss of the first organ 120 on the injured person.

And S110, releasing the covered stent 250 again.

The operation handle 220 is controlled again to keep the second operation portion 224 fixed, and the first operation portion 222 is operated to gradually approach the second operation portion 224 to compress the expansion portion 223, thereby withdrawing a part of the overtube 210 from the blood vessel. At this time, the stent graft 250 in the hemostatic end 212 is kept stationary under the pushing of the push-pull rod 230, the hemostatic end 212 of the outer sleeve 210 continuously contracts back, so that the release of the stent graft 250 is completed, and the stent graft 250 is released at the inlet of the first branch vessel 130 again, so that the stent graft 250 is re-expanded, blood cannot enter the first organ 120, and hemostasis is achieved again. Thereby, the survival time of the injured person can be increased in order to transport the patient to the hospital.

And step S111, sending the patient to a hospital for treatment.

Thus, the stent 251 and the cover 252 provided on the stent 251 can prevent the blood in the aorta 110 from flowing into the first branch vessel 130, thereby achieving hemostasis of the first organ 120. Meanwhile, since the blood in the aorta 110 can pass through the interior of the stent graft 250, the blood can normally pass through the second branch vessel 150 to supply to the second organ 140 and the lower limb muscle group, thereby avoiding the influence on the second organ 140 and the lower limb muscle group caused by the operation of the first organ 120, and avoiding the generation of a large amount of acidic metabolic waste to increase the burden on the liver and kidney.

By receiving the stent 251 into the hemostatic end 212 after hemostasis has continued for a first time interval, blood in the aorta 110 can be allowed to enter the first organ 120 through the first branch 130. This allows the first organ 120 to regain the blood supply, thereby preventing the first organ 120 from being in an ischemic or hypoxic state for a long time and from impairing the function of the first organ 120. In addition, after the first organ 120 has obtained enough blood, the stent 251 may be released again to stop bleeding continuously, so that the survival time of the injured person may be increased, the patient may be transported to a hospital, the injured person may be treated, and the survival probability of the injured person may be increased.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An endovascular-implanted segmental hemostatic device, comprising:

an outer sleeve, one end of the outer sleeve being a hemostatic end;

a stent graft disposed within the hemostatic end;

the operating handle is connected with the other end of the outer sleeve, the inside of the operating handle is hollow, and the operating handle is communicated with the outer sleeve;

the first water filling port is arranged on the operating handle;

the push-pull rod is arranged in the outer sleeve, one end of the push-pull rod is connected with the film coating bracket, and the other end of the push-pull rod is connected with the operating handle;

the guide wire is arranged in the push-pull rod and can move along the push-pull rod;

after the hemostasis end enters a blood vessel, physiological saline is injected through the first water injection port, so that a sterile liquid environment is kept in the outer sleeve and the operation handle.

2. The endovascular implanted segmental hemostatic device of claim 1, wherein the handle comprises:

a first operation section;

a telescoping section that is extendable and compressible;

a second operation section;

the first operation part, the telescopic part and the second operation part are sequentially connected in a cylindrical shape; the end part of the first operating part is connected with the other end of the outer sleeve, and the end part of the second operating part is closed; the push-pull rod is connected with the second operation portion.

3. The endovascular implantable segmental hemostatic device of claim 2, wherein the length of extension and compression of the telescoping portion is greater than or equal to the length of the stent graft.

4. The endovascular implantable segmental hemostatic device according to claim 2 or 3, wherein the telescopic portion is made of a transparent material.

5. The endovascular implanted segmental hemostatic device of any one of claims 1-4, wherein the first water injection port has one or more ports.

6. The endovascular implantable segmental hemostasis device of claim 1, wherein the stent graft automatically expands against the blood vessel after the push-pull rod pushes the stent graft out of the hemostasis end.

7. The endovascular implantable segmental hemostatic device of claim 6, wherein the stent graft is removably connected to the push-pull rod.

8. The endovascular implanted segmental hemostatic device of claim 6 or 7, wherein the hemostatic end is flared at its end.

9. The endovascular implantable segmental hemostatic device of claim 1, further comprising a reinforcing ring disposed at an end outer periphery of the hemostatic end.

10. The endovascular implantable segmental hemostatic device of claim 1, wherein the other end of the push-pull rod is provided with a second water injection port on the outside of the handle, the guide wire being accessed by the second water injection port.