CN114521931A

CN114521931A - System and method for closing vascular wound

Info

Publication number: CN114521931A
Application number: CN202210275698.2A
Authority: CN
Inventors: 胡昊; 李誉; 刘伟
Original assignee: Anhui Provincial Hospital First Affiliated Hospital of USTC
Current assignee: Anhui Provincial Hospital First Affiliated Hospital of USTC
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-05-24
Anticipated expiration: 2042-03-18
Also published as: CN114521931B

Abstract

The invention relates to a system for closing a vessel wound, comprising at least a closing body that can be used to close a vessel wound, the closing main body at least comprises a guide wire sheath tube which can guide the system to enter a vascular wound along a guide wire, an adjusting component which can seal and limit the vascular wound and a suturing unit which can suture the vascular wound, wherein, in case the adjustment assembly defines the position and size of the vessel wound in such a way that it grips the vessel wall in the vessel wound edge area, the suture needle line of the suture unit can complete the puncture operation of the suture needle line through the blood vessel wall along a preset arc puncture path in a mode of surrounding the wound area of the blood vessel, therefore, the loop capable of closing the blood vessel wound is constructed, and the loop can be reduced in a mode of adjusting the position of the loop, so that the blood vessel wound is closed under the restraint of the loop. Furthermore, the invention relates to a method for closing a vascular wound.

Description

System and method for closing vascular wound

Technical Field

The invention relates to the technical field of endovascular therapy, in particular to a system and a method for closing a vascular wound.

Background

In transluminal diagnostic and interventional vascular procedures, it is often necessary to open a wound in a given vessel wall. This type of vascular access procedure is commonly performed on the basis of the well-known Seldinger technique. In performing a puncturing procedure, a trocar is passed sequentially through the skin, tissue, and vessel wall of a patient to create a pathway into the lumen of the vessel. A guidewire is then introduced through the trocar and navigated through the vasculature to the desired treatment site. With the guidewire in place, the trocar is first removed and the introducer sheath can then be advanced over the guidewire until the distal end of the introducer sheath enters the vessel lumen. With the introducer sheath properly positioned within the lumen, the catheter is introduced into the vascular system through the introducer sheath and then the target treatment site is operated on using existing vascular interventional techniques.

When the established vascular access is no longer required, the catheter and introducer sheath are first removed and wound closure is then performed by a percutaneous suture application device, the distal end of which can be passed through the vascular puncture and positioned within the lumen of the vessel. The intermediate portion of the suturing device is capable of advancing one or more needles distally through the tissue of the vessel wall adjacent the access puncture site. The suture is then advanced into the vessel wall on opposite sides of the wound using one or more needles, and the suturing device is withdrawn from the tissue tract, tying the ends of the suture. The suture is tied manually at the suture end and the knot is advanced down the tissue tract until it is positioned on the adventitial surface of the vessel wall. Another form of wound closure is to secure the suture together with a clamp or locking tab that is manually advanced through the tissue and positioned adjacent the puncture site. However, manual tying of knots or separate holding members to suture a wound is difficult, time consuming, and if not done correctly, can cause additional undesirable effects and can also result in inefficient closure of the wound.

Patent document CN109199485A discloses a surgical instrument for threading a suture through tissue comprising first and second jaws disposed on a distal end of an elongate shaft and a needle selectively movable along a longitudinal channel through an outer sidewall of the first jaw. The first jaw has a cavity configured to receive a removable and replaceable suture cassette. The suture cassette may be attached to a suture cassette holder that is removed prior to use of the surgical instrument such that the needle is advanced distally to pass the suture attached to the suture cassette holder through tissue within the patient. As the needle is retracted proximally, subsequent suture portions are loaded onto the needle. The jaws remain in the body as the suture is passed through tissue in the patient. This patent can't be fast after the puncture operation of completion tissue forms the knot, is unfavorable for closing the wound fast after accomplishing the intervention operation.

Accordingly, the present application provides a system for closing a vessel wound that is capable of defining the vessel wall morphology around the vessel wound and quickly completing a suture tying operation.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

Aiming at the defects of the prior art, the technical scheme of the invention provides a system for closing a vessel wound, which at least comprises a closing main body capable of closing the vessel wound, and is characterized in that the closing main body at least comprises a guide wire sheath tube capable of guiding the system to enter the vessel wound along a guide wire, an adjusting assembly capable of plugging and limiting the vessel wound and a suturing unit for suturing the vessel wound, wherein under the condition that the adjusting assembly limits the position and the size of the vessel wound according to the mode that the adjusting assembly clamps the vessel wall at the edge area of the vessel wound, a suturing needle wire of the suturing unit can complete the puncture operation of the suturing needle wire penetrating through the vessel wall in the mode of surrounding the area of the vessel wound along a preset arc puncture path, so that a knotting wire ring capable of closing the vessel wound is constructed, and the knotting wire ring can be reduced in the mode of adjusting the position of the knotting wire, so that the vessel wound is closed under the restraint of the loop. Its advantage lies in, can fix limit structure to the vascular wall through the structure, makes things convenient for medical personnel to sew up the blood vessel wound after accomplishing intervention operation, avoids appearing fold and turning over the phenomenon that the book etc. is unfavorable for the quick accuracy of carrying on sews up in sewing up the in-process vascular wall, has reduced the degree of difficulty and the working strength when medical personnel handle the blood vessel wound, has improved medical personnel's efficiency of sewing up the blood vessel wound. In addition, the unit of sewing up can establish predetermined arc puncture route, avoids medical personnel to need carry out the prior art's of subjective judgement depth of puncture and angle defect, has guaranteed that the puncture of sewing up is gone on at the vascular wall middle level, has improved the quality of sewing up of vascular wound. The suture unit also can help medical personnel to finish knotting treatment of suture lines quickly after puncture operation by arranging the preset knot, and the defect that the knot is difficult to form in the existing suture operation is overcome.

According to a preferred embodiment, the adjusting component at least comprises a balloon, a push rod and an adjusting body, wherein the balloon is arranged on the tube body of the guide wire sheath and extends into the vessel cavity along the guide wire sheath in a mode of being capable of sealing the vessel wound; the push rod set up in the axial upper end of seal wire sheath, the partial body of seal wire sheath one end far away from the vascular wound adjustably penetrates on the lumen of push rod for the distance between push rod and the sacculus is changed through the mode of carrying out reciprocal translation along the axis direction of seal wire sheath.

According to a preferred embodiment, under the condition that the balloon is expanded in volume to block the wound of the blood vessel and attached to the inner wall of the cavity of the blood vessel, the push rod and the guide wire sheath tube are translated relatively, so that the end part of the push rod can be attached to the outer wall of the cavity of the blood vessel at the edge of the wound of the blood vessel.

According to a preferred embodiment, the suturing unit is mounted in an axially lower chamber of the shaft cavity of the push rod; the suture needle line of the suture unit comprises a suture needle and a suture line; when sacculus and push rod are attached respectively on the medial wall in the same region in vascular cavity and press from both sides tight vascular cavity wall, the suture unit can drive the suture needle and pass from the vascular wall intermediate level of vascular wound both sides along predetermined arc puncture route for the vascular wall of vascular wound both sides is through following the suture line that the suture needle got into the vascular wall intermediate level is connected.

According to a preferred embodiment, in a case where the suture needle of the suture unit is capable of being pierced from the surface of the blood vessel wall on one side of the wound of the blood vessel, the suture needle pulls the suture thread into the middle layer of the blood vessel wall on the other side of the wound of the blood vessel along a preset arc-shaped puncture path, and the suture needle pulls the suture thread out from the middle layer of the blood vessel wall.

According to a preferred embodiment, after the suture needle has passed out of the vessel wall, the suture needle can be connected to the needle stub in such a way that its needle head penetrates the needle stub arranged in the shaft cavity of the push rod.

According to a preferred embodiment, the needle connecting head column is provided with a prefabricated knot which is matched with a suture thread connected with the suture needle to form a knot ring; the prefabricated knot on the needle head column is constructed by winding the tail end line body of a suture line connected with the suture needle on the cylindrical surface of the needle head column in a plurality of circles.

The invention also provides a method for closing a vascular wound, which is characterized by at least comprising the steps of extending at least part of the tube body of a guide wire sheath tube into the vascular wound along a guide wire which is previously placed into the vascular wound; the saccule arranged on the part of the tube body of the guide wire sheath tube extending into the vascular wound blocks the vascular wound in a volume expansion mode; adjusting the relative position between the guide wire sheath tube and the adjusting component, so that the balloon and the push rod respectively lean against the inner wall and the outer wall of the blood vessel to limit the wound of the blood vessel and measure the thickness of the blood vessel wall; the suture needle line of the suture unit arranged in the adjusting component can complete the puncture operation of the suture needle line through the blood vessel wall along the preset arc puncture path in a mode of surrounding the wound area of the blood vessel, and the suture needle line penetrating out of the blood vessel wall can construct a loop of the suture needle line capable of closing the wound of the blood vessel in a mode of being matched with the prefabricated knot. Its advantage lies in, can fix limit structure to the vascular wall through the structure, makes things convenient for medical personnel to sew up the blood vessel wound after accomplishing intervention operation, avoids appearing fold and turning over the phenomenon that the book etc. is unfavorable for the quick accuracy of carrying on sews up in sewing up the in-process vascular wall, has reduced the degree of difficulty and the working strength when medical personnel handle the blood vessel wound, has improved medical personnel's efficiency of sewing up the blood vessel wound. In addition, sew up the unit and can establish predetermined arc puncture route, avoid medical personnel to need carry out the prior art's of subjective judgement depth of puncture and angle defect, guaranteed to sew up the puncture and go on at the vascular wall middle level, improved blood vessel wound's the quality of sewing up. The suture unit also helps medical personnel to finish the knotting treatment of the suture line rapidly after the puncture operation by arranging the preset knot, and solves the defect that the knot is difficult to form in the existing suture operation.

According to a preferred embodiment, the depth of penetration of the guide wire sheath is defined by the position of the balloon in the axial direction of the body of the guide wire sheath; blood within the vessel can enter the guidewire sheath from a side hole on the guidewire sheath as the balloon passes through the vessel wound and forms an occlusion in the lumen of the vessel.

According to a preferred embodiment, the guide wire sheath is connected to the adjustment assembly in such a way that a part of the tube body thereof which does not project into the vascular wound can be adjustably inserted into the adjustment assembly from the axially lower end of the adjustment assembly; the adjusting main body of the adjusting assembly is sleeved on the push rod, so that the push rod can selectively reciprocate in the axial direction of the adjusting main body, and the tube body of the guide wire sheath tube penetrates through the push rod and is connected with the adjusting main body.

Drawings

FIG. 1 is a schematic structural view of a suturing unit of a preferred system for closing a vascular wound provided by the present invention;

fig. 2 is a schematic diagram of a preferred system for closing a vascular wound provided by the present invention.

List of reference numerals

1: closing the body; 2: a guide wire sheath; 3: an adjustment assembly; 4: a stitching unit; 21: a sheath body; 22: a thumb plate; 23: side holes; 24: guiding the outer tube; 31: a balloon; 32: a push rod; 33: adjusting the main body; 34: a conduit; 35: a balloon water injection valve; 321: an arcuate end portion; 322: an outer rod; 323: an inner rod; 324: a connecting plate; 331: a chute; 332: a card slot; 333: a graduated scale; 41: a suture needle; 42: a suture; 43: a transmission assembly; 44: a drive rod; 45: connecting a needle head column; 431: a first drive tooth; 432: a second gear; 433: a rotating member; 434: an arc-shaped needle body; 451: a first column; 452: a second cylinder.

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

Example 1

The present application also provides a system for closing a vascular wound, which may include a closure body 1, a guidewire sheath 2, an adjustment assembly 3, and a suturing unit 4.

According to a particular embodiment, the closing body comprises a guide wire sheath 2, an adjustment assembly 3 and a suturing unit 4. The guide wire sheath 2 is connected to the adjusting unit 3 so that a part of the catheter body is inserted into the body cavity of the adjusting unit 3. The suture unit 4 is arranged at one end of the body cavity of the adjusting component 3 close to the guide wire sheath 2. When performing a puncture operation and a suture operation, first, a puncture needle with a needle core is inserted into a blood vessel cavity after sequentially passing through skin, tissue and a blood vessel wall under the control of a medical worker. The guide wire enters the interior of the blood vessel cavity along the needle tube of the puncture needle. After the guide wire portion is placed in the blood vessel lumen, the puncture needle is pulled out, and the guide wire sheath 2 of the closing body 1 is placed in the blood vessel lumen along the guide wire. The regulating assembly 3 can seal the wound of the blood vessel, and meanwhile, the regulating assembly 3 can limit the shape of the blood vessel wall by clamping the blood vessel wall around the wound of the blood vessel, so that the blood vessel wall around the wound of the blood vessel can keep a stable and flat shape, and therefore the suture needle line of the suturing unit 4 can complete the puncture operation that the suture needle line passes through the blood vessel wall by surrounding the wound area of the blood vessel along a preset arc puncture path, and a knotted thread ring which can close the wound of the blood vessel and is in a U-shaped purse-string shape is constructed. The line knot that suturing unit 4 founded can be after accomplishing intervention operation, and medical personnel reduce the length that constitutes the stylolite 42 of line knot through the mode that the knot that pushes away the stylolite circle is close to the blood vessel outer wall gradually for the motion that the vascular wall of blood vessel wound both sides takes place to be close to each other under the pulling of stylolite 42, thereby realizes the closure of wound.

As shown in fig. 2, the guidewire sheath 2 may include a sheath body 21 and a thumb plate 22. Wherein, the axial upper end of the tube body of the sheath tube main body 21 inserted into the adjusting component 3 is connected with a thumb plate 22 for controlling the sheath tube main body 21 to move along the axial direction. Specifically, the thumb plate 22 is connected to the end of the sheath main body 21 mounted inside the adjustment main body 33 in such a manner as to penetrate the adjustment main body 33, so that the relative translation between the guide wire sheath 2 and the adjustment assembly 3 is achieved by pushing the thumb plate 22 to perform the reciprocating translation in the axial direction of the adjustment main body 33. Medical personnel can take place directional translation through control thumb board 22 when operating for the operation is lifted to guide wire sheath pipe 2 drive sacculus 31, makes sacculus 31 of putting into in the vascular cavity can be attached on the blood vessel wound under the circumstances that takes place the volume inflation, thereby realizes the shutoff of sacculus 31 to the blood vessel wound. Preferably, a balloon 31 capable of sealing a blood vessel wound is attached to the tube body of the sheath tube main body 21. The side surface of the sheath main body 21 close to the balloon 31 is also provided with a side hole 23 capable of discharging blood. When the uninflated balloon 31 extends into the lumen of the blood vessel along with the sheath body 21, the balloon 31 may cause a certain blockage of the blood vessel, resulting in blood flowing into the adjustment body 33 along the side hole 23 of the sheath body 21. Therefore, the end of the sheath main body 21 connected to the thumb plate 22 is further provided with an outer guide tube 24 which can facilitate observation and discharge of blood. Preferably, the end of the guiding outer tube 24 may be connected to a transparent blood reservoir bag for easy observation of the occurrence of blood outflow. Preferably, the guiding outer tube 24 can translate on the adjusting body 33 along with the thumb plate 22, so that the guiding outer tube 24 can translate along with the movement of the sheath body 21, and the guiding outer tube 24 is prevented from separating from the sheath body 21, which may cause the blood led out from the sheath body 21 to contaminate other parts of the device. In the process of placing the guide wire sheath 2 into the vessel cavity, the medical staff judges whether the balloon 31 has entered the vessel cavity by observing whether the jet-shaped blood appears suddenly in the transparent blood storage balloon communicating with the distal end of the outer guide tube 24. When the balloon 31 enters the vascular lumen and the side hole 23 does not completely enter the vascular lumen, the sheath main body 22 can also draw out the blood flow, but the pressure of the blood entering the guide outer tube 24 in the channel is not high, and the blood cannot be ejected. When the side hole 23 is completely entered into the lumen of the blood vessel, the entering speed and pressure of blood in the side hole 23 are abruptly increased as the blood vessel fluctuates, causing the blood in the guiding outer tube 24 to be able to gush out, so that the ejection of blood is observed in the transparent blood reservoir. Therefore, when the medical staff performs the insertion operation of the sheath main body 22, the medical staff can judge whether the insertion operation of the sheath main body 22 is successful or not based on the phenomenon that the blood is ejected from the transparent blood storage bag.

Preferably, the adjustment assembly 3 comprises at least a balloon 31, a push rod 32 and an adjustment body 33. The adjusting body 33 is fitted over the axial upper end of the push rod 32, and the guide wire sheath 2 is inserted into the adjusting body 33 so as to pass through the push rod 32. Preferably, the push rod 32 can relatively translate with respect to the adjustment body 33, so as to change the distance between the push rod 32 and the balloon 31, and when the balloon 31 is volumetrically inflated and attached to the inner wall of the blood vessel cavity, the end of the push rod 32 away from the adjustment body 33 can abut against the outer wall of the blood vessel cavity by moving towards the balloon 31. Preferably, both the balloon 31 and the push rod 32 are in contact with the vessel wall in the same peripheral region of the vessel wound. The pressing force of the balloon 31 against the vessel wall can act on the push rod 32 through the vessel wall. The pressing force of the push rod 32 against the blood vessel wall can act on the balloon 31 through the blood vessel wall. The relative acting force of the balloon 31 and the push rod 32 can clamp the blood vessel wall around the blood vessel wound, so that the position of the blood vessel wound is limited, the blood vessel wall around the blood vessel wound keeps a flat state, namely the size of the blood vessel wound is limited, and the injury of the blood vessel wall and the secondary expansion of the blood vessel wound caused by the peristalsis of the blood vessel wall or the misoperation of an interventional operation are avoided. Preferably, the shape of the blood vessel wall around the blood vessel wound is defined under the combined action of the balloon 31 and the push rod 32, so that the suturing unit 4 can complete the puncture operation better and more accurately, and the medical staff is prevented from being affected by the uncontrollable movement of the blood vessel wall at the edge area of the blood vessel wound. The blood vessel wall is in a non-completely static/fixed state, and when medical personnel puncture, the blood vessel wall can be seriously deformed under the action of external force, which can seriously affect the puncture efficiency and the puncture success rate.

Preferably, the adjustment assembly 3 further comprises a catheter 34 capable of communicating with the balloon 31. The catheter 34 is attached to the outside of the sheath main body 21, and the catheter 34 can extend into the adjustment main body 33 following the sheath main body 21. Preferably, one end of the catheter 34 far away from the balloon 31 passes through the adjusting body 33 to communicate with the outside, and the end of the catheter 34 in the outside environment is further provided with a balloon injection valve 35 capable of selectively injecting saline into the catheter 34 according to requirements. Preferably, balloon 31 is inflated by receiving saline in catheter 34. Preferably, the total volume of the catheter 34, the minimum volume of the balloon 31 and the inflation amount are set values, so that when a medical worker injects the physiological saline into the catheter 34 through a syringe or the like, the injection amount of the physiological saline and the inflation degree of the balloon 31 are in positive correlation, and the medical worker can control the inflation amount of the balloon 31 conveniently.

Preferably, the push rod 32 includes a conical arcuate end 321 and an outer rod 322. The curved end 321 can be affixed to the outer wall of the vessel. The outer rod 322 is a hollow outer rod. The arc-shaped end 321 is opened with an opening communicating with the hollow rod cavity of the outer rod 322, so that the sheath main body 21 can be inserted into the outer rod 322 from the opening of the arc-shaped end 321. Preferably, a suture unit 4 capable of performing a wound suturing operation is further installed in the opening of the arc-shaped end portion 321. When the arc-shaped end portion is attached to the outer wall of the blood vessel, the suturing unit 4 can perform a puncturing operation under the control of the medical staff. Preferably, the push rod 32 further comprises an inner rod 323 disposed within the outer rod 322 in a coaxial manner with the outer rod 322. The inner rod 323 is a hollow pipe body so that the inside thereof can be used to accommodate the sheath main body 21. Preferably, the axially lower end of the inner rod 323 connects the upper plate body of the arc-shaped end portion 321. Preferably, a connecting plate 324 capable of limiting the position of the driving rod 44 of the suturing unit 4 and fixedly mounting the needle connecting post 45 is further connected to the inner rod 323. Preferably, the plate surface of the connecting plate 324 is perpendicular to the axis of the inner rod 323. The web 324 can define a direction of motion of the drive rod 44 such that the drive rod 44 can only translate in a direction parallel to the axis of the inner rod 323. Preferably, the drive rod 44 is disposed through the plate surface of the connecting plate 324. The face of the web 324 adjacent the arcuate end 321 also mounts the connector pin post 45. Preferably, the axis of the connector pin post 45 is perpendicular to the face of the web 324.

Preferably, the adjusting body 33 has a through-type slide groove 331 and a locking groove 332 integrally formed with the slide groove 331, which are formed in the housing along the axial direction thereof. The thumb plate 22 can be placed in the slide groove 331 so that the slide groove 331 can define the moving direction of the thumb plate 22. After the thumb plate 22 is moved to a proper position along the slot of the sliding slot 331, the thumb plate 22 and the adjusting body 33 are fixed by moving the thumb plate 22 to the slot 332. The surface of the adjustment body 33 is also provided with a scale 333 capable of measuring the distance between the thumb plate 22 and the origin of the scale. Preferably, the distance between the thumb plate 22 and the origin of the scale is the width of the gap between the balloon 31 and the arc-shaped end 321. This clearance width is by the thickness of the vascular wall of both centre grippings, through measuring the vascular wall thickness in vascular wound region, makes things convenient for medical personnel to judge whether to mix with connective tissue or adipose tissue on the vascular wall.

As shown in FIG. 1, the suturing unit 4 includes at least a suturing needle 41, a suturing thread 42, a transmission assembly 43, a drive rod 44, and a needle-connecting post 45. Preferably, the suture needle 41 can pull the suture thread 42 to perform a puncture operation on the blood vessel wall under the driving of an external force, so as to connect the suture thread 42 in the middle layers of the blood vessel walls at two sides of the blood vessel wound in series, so that when the medical staff shortens the total length of the partial suture thread 42 located in the blood vessel wall, the suture thread 42 can drive the blood vessel walls at two sides of the blood vessel wound to approach each other, and finally, the blood vessel walls at two sides of the blood vessel wound can be gradually approached by the pulling force of the suture thread 42 to be attached together, so that the blood vessel wound can be closed under the pulling force of the suture thread 42. Preferably, a driving assembly 43 capable of driving the suture needle 41 to pass through the plate body of the arc-shaped end portion 321 is arranged axially above the arc-shaped end portion 321. The transmission assembly 43 can drive the suture needle 41 to move along the planned arc-shaped track, so that the suture needle 41 performs puncture operation in the blood vessel wall along the set arc-shaped track. Preferably, the transmission assembly 43 is connected with the driving rod 44 in a manner of a rodent fit, so that the transmission assembly 43 can be driven to rotate directionally by the driving rod 44. In a case where the suture needle 41 of the suturing unit 4 can be pierced from the blood vessel wall surface on one side of the blood vessel wound, the suture needle 41 pulls the suture thread 42 into the middle layer of the blood vessel wall on the other side of the blood vessel wound along a preset arc-shaped puncture path, and the suture needle 41 pulls the suture thread 42 out of the middle layer of the blood vessel wall.

Preferably, the transmission assembly 43 may include a first transmission tooth 431, a second transmission tooth 432, and a rotating member 433. The first transmission teeth 431 and the second transmission teeth 432 are engaged with each other, so that the first transmission teeth 431 drive the second transmission teeth 432 to rotate under the driving of the driving rod 44. Preferably, the first and

second gear teeth

431, 432 are both mounted on the side wall of the inner rod 323. The rotational shafts of the first and

second transmission teeth

431, 432 are fixedly mounted on the side wall of the inner rod 323. Preferably, at least two sets of the first transmission teeth 431 and the second transmission teeth 432 are respectively disposed on two sides of the inner rod 323, so that the movement of the driving rod 44 can simultaneously drive the two first transmission teeth 431 disposed on two sides of the inner rod 323 in a parallel manner to perform the same rotation. Preferably, one end of the rotating member 433 in an L shape is connected to an end of the rotating shaft of the second driving gear 432, so that the rotating member 433 can rotate in the same direction following the rotation of the second driving gear 432. Preferably, an arc-shaped needle body 434 capable of being used for installing the suture needle 41 is connected to one end of the rotary member 433 away from the second driving gear 432. The arc-shaped needle body 434 is fixedly mounted on the rotary member 433 in such a manner that a tangent line drawn from an arc-shaped end thereof is perpendicular to an axis of the rotary member 433. When specifically operating, the actuating lever 44 of axial downstream can drive first transmission tooth 431 and take place clockwise rotation, and first transmission tooth 431 drives second transmission tooth 432 and takes place anticlockwise rotation, and second transmission tooth 432 drives fixed connection's rotating member 433 and arc needle body 434 and takes place the syntropy and rotate. The arc needle body 434 rotates counterclockwise as the second transmission gear 432, so as to drive the suture needle 41 arranged at the front end of the movement to penetrate through the plate body of the arc end 321 and then be inserted into the blood vessel wall, so that the suture needle 41 is driven by the arc needle body 434 to complete the puncture operation of an arc track in the middle layer of the blood vessel wall, and finally the suture needle 41 penetrates out from the other side of the blood vessel wall. Preferably, the arc-shaped trajectory in the puncture operation of the suture needle 41 is defined by the length and the curvature of the arc-shaped needle body 434 and the connection position of the arc-shaped needle body 434 and the rotary member 433, that is, the curvature, the arc radius and the like of the arc-shaped trajectory in the movement of the suture needle 41 are changed along with the change of the length and the curvature of the arc-shaped needle body 434 and the connection position of the arc-shaped needle body 434 and the rotary member 433. Preferably, the arc-shaped needle body 434 may be an arc-shaped cylindrical body with a groove formed on an axial surface, so that in the case that the suture needle 41 is fixedly installed at an end of the arc-shaped needle body 434, the arc-shaped needle body 434 further has a receiving space for the suture thread 42 that can be used for the medical staff to perform the cycloid operation. Preferably, the needle connecting column 45 is located at the end of the arc track where the arc needle body 434 drives the suture needle 41 to perform the puncture motion just according to the column body at the axial lower end, so that the suture needle 41 can be directly inserted into the end of the needle connecting column 45 after penetrating out of the blood vessel wall, and the needle connecting column 45 drives the suture needle 41 to be separated from the arc needle body 434 by the mode of generating the axial upward motion.

Preferably, the connector post 45 includes a first post 451 and a second post 452. The first cylinder 451 is provided with an axially lower end of the second cylinder 452 in such a manner that a part of the cylinder is inserted into the interior of the second cylinder 452. The first cylinder 451 is capable of telescopic movement relative to the second cylinder 452 to vary the overall length of the connector pin column 45. The connection structure between the first cylinder 451 and the second cylinder 452 may refer to a hydraulic rod structure or a screw-type elevating cylinder structure in the related art. Preferably, the terminal wire body of the suture 41 is built up as a prefabricated knot wound on the cylinder of the first body 451. When the needle 41 is inserted into the first cylinder 451, the first cylinder 451 carries the needle 41 axially upwards in such a way as to retract inside the second cylinder 452, and allows the needle 41 to pass inside the loop of the preformed knot, so that the suture 42 connected to the needle 41 can pass through the preformed knot built on the first cylinder 451 by the terminal body of the suture 42 itself. The suture 42 is fully formed by the upper suspension knot after passing through the prefabricated knot constructed by its own terminal line body, so that the suture 42 and the knot together form a knot loop capable of restraining a vascular wound. The two ends of the suture 42 together form a knot that can adjust the circumference of the coil, and the body of the suture 42 passes through the vessel wall on both sides of the vessel wound and forms a coil with adjustable circumference. The medical staff can make the circumference (total length of the line body) of the coil constructed by the line knot gradually reduce by adjusting the position of the line knot, so that the vascular walls on two sides of the wound of the blood vessel are drawn to gradually approach and finally stick together.

Preferably, in the case that it is confirmed that the balloon 31 and the arc-shaped end portion 321 clamp the blood vessel wall, the suture unit 4 operates the preset needle thread to perform the puncture suture work, so that the suture needle 41 can pass through the middle layer of the blood vessel wall clamped by the push rod 32 and the balloon 31 in a manner of constructing a U-shaped purse-string, and the suture needle 41 can pass out from the prefabricated knot after completing the puncture operation of the U-shaped purse-string suture path, thereby forming a movable knot. Preferably, the operator tightens the suture 42 that is punctured around the wound by tightening the knot, and forcibly constricts the vessel by shortening the length of the suture 42 within the vessel wall, thereby completing the U-shaped purse-string suture procedure.

Preferably, the suture 42 connected with the suture needle 41 can be controlled to perform dragging movement in the "hanging up" interface directly by the knot pusher after the intervention operation is completed, so as to realize the binding of the suture 42 in the blood vessel wall. Preferably, the end of the suture 42 remote from the needle 41 reserves a portion of the thread not passing through the vessel wall, which forms a "hanging" preformed knot in a plurality of windings on the connector post 45.

Example 2

The invention also provides a method for closing a vascular wound, comprising at least

At least part of the tube body of the guide wire sheath tube 2 extends into the vascular wound along the guide wire which is pre-placed into the vascular wound;

the saccule 31 arranged on the part of the tube body of the guide wire sheath tube 2 extending into the blood vessel wound seals the blood vessel wound in a volume expansion mode;

the relative position between the guide wire sheath 2 and the adjusting component 3 is adjusted, so that the saccule 31 and the push rod 32 respectively limit the wound of the blood vessel and measure the thickness of the blood vessel wall in a mode that the saccule 31 and the push rod are attached to the inner wall and the outer wall of the blood vessel;

the suture needle thread of the suture unit 4 arranged in the adjusting component 3 can complete the puncture operation of the suture needle thread through the blood vessel wall along the preset arc puncture path in a mode of surrounding the wound area of the blood vessel, and the suture needle thread penetrating out of the blood vessel wall can construct a thread knot loop capable of closing the wound of the blood vessel in a mode of being matched with the prefabricated thread knot.

Preferably, the depth of the insertion of the guide wire sheath 2 is defined by the position of the balloon 31 in the axial direction of the tubular body of the guide wire sheath 2. When the balloon 31 passes through a vascular wound and forms a blockage in the lumen of the blood vessel, blood in the blood vessel can enter the guide wire sheath 2 from the side hole on the guide wire sheath 2. Preferably, the guide wire sheath 2 is connected to the adjustment assembly 3 in such a way that the part of the tube body thereof which does not project into the vascular wound can be adjustably inserted into the adjustment assembly 3 from the axially lower end of the adjustment assembly 3. The adjusting body 33 of the adjusting assembly 3 is sleeved on the push rod 32, so that the push rod 32 can selectively perform reciprocating translation in the axial direction of the adjusting body 33, wherein the tube body of the guide wire sheath 2 passes through the push rod 32 and is connected with the adjusting body 33.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not intended to be limiting on the claims. The scope of the invention is defined by the claims and their equivalents. Throughout this document, the features referred to as "preferably" are only an optional feature and should not be understood as necessarily requiring that such applicant reserves the right to disclaim or delete the associated preferred feature at any time.

Claims

1. A system for closing a vessel wound, comprising at least a closing body (1) usable for closing a vessel wound, characterized in that the closing body (1) comprises at least a guide wire sheath (2) usable for guiding the system along a guide wire into the vessel wound, an adjustment assembly (3) usable for sealing and spacing the vessel wound, and a suturing unit (4) for suturing the vessel wound, wherein,

under the condition that the adjusting component (3) limits the position and the size of the blood vessel wound according to the clamping mode of the adjusting component for clamping the blood vessel wall at the edge area of the blood vessel wound, the suture needle line of the suture unit (4) can complete the puncture operation of the suture needle line through the blood vessel wall along the preset arc-shaped puncture path in a mode of surrounding the blood vessel wound area, thereby constructing a loop capable of closing the blood vessel wound,

the loop can be reduced by adjusting the position of the loop, so that the vascular wound is closed under the constraint of the loop.

2. System for closing a vascular wound according to claim 1, characterized in that the adjustment assembly (3) comprises at least a balloon (31), a push rod (32) and an adjustment body (33),

the sacculus (31) is arranged on the tube body of the guide wire sheath tube (2) and extends into a blood vessel cavity along with the guide wire sheath tube (2) in a mode of plugging a blood vessel wound;

the push rod (32) is arranged at the axial upper end of the guide wire sheath tube (2), and a part of tube body of one end, far away from a vascular wound, of the guide wire sheath tube (2) can be adjustably penetrated into a tube cavity of the push rod (32), so that the distance between the push rod (32) and the balloon (31) is changed in a reciprocating translation mode along the axis direction of the guide wire sheath tube (2) by the push rod (32).

3. A system for closing a vessel wound according to claim 2, wherein in the event that the balloon (31) is volumetrically inflated to occlude the vessel wound and affixed to the inner wall of the vessel lumen, relative translation occurs between the push rod (32) and the guide wire sheath (2) such that the end of the push rod (32) is also affixed to the outer wall of the vessel lumen at the edge of the vessel wound.

4. A system for closing a vascular wound according to claim 3, wherein the suturing unit (4) is mounted in an axially lower chamber of the shaft lumen of the push rod (32);

the suture needle line of the suture unit (4) comprises a suture needle (41) and a suture line (42);

when sacculus (31) and push rod (32) are attached respectively on the inside and outside wall of the same region of vascular cavity and press from both sides the vascular cavity wall, suture unit (4) can drive suture needle (41) to pass from the vascular wall intermediate level of vascular wound both sides along predetermined arc puncture route for the vascular wall of vascular wound both sides is connected through following suture line (42) that suture needle (41) got into the vascular wall intermediate level.

5. The system for closing a vascular wound according to claim 4, wherein, in a case where the suture needle (41) of the suture unit (4) can be pierced from the surface of the vascular wall on one side of the vascular wound, the suture needle (41) pulls the suture thread (42) into the media of the vascular wall on the other side of the vascular wound along a predetermined arc-shaped puncture path, and the suture needle (41) pulls the suture thread (42) out from the media of the vascular wall.

6. A system for closing a vascular wound according to claim 5, wherein the suture needle (41) is connectable to a needle-receiving stud (45) arranged in the shaft lumen of the push rod (32) in such a way that the needle tip of the suture needle (41) penetrates the needle-receiving stud (45) after the suture needle (41) has penetrated out of the vessel wall.

7. A system for closing a vascular wound according to any of the preceding claims, characterized in that the needle-connecting stub (45) is provided with a preformed knot which cooperates with a suture (42) connected to the suture needle (41) to form a loop;

the prefabricated knot on the needle connecting head column (45) is constructed in a mode that the tail end line body of a suture line (42) connected with the suture needle (41) is wound on the cylindrical surface of the needle connecting head column (45) in a plurality of circles.

8. A method for closing a vascular wound, characterized in that it comprises at least

At least part of the tube body of the guide wire sheath tube (2) extends into the vascular wound along the guide wire which is pre-placed into the vascular wound;

the saccule (31) arranged on the part of the tube body of the guide wire sheath tube (2) extending into the blood vessel wound seals the blood vessel wound in a volume expansion mode;

adjusting the relative position between the guide wire sheath (2) and the adjusting component (3) to enable the balloon (31) and the push rod (32) to limit the wound of the blood vessel and measure the thickness of the blood vessel wall in a mode that the balloon (31) and the push rod are respectively attached to the inner wall and the outer wall of the blood vessel;

the suture needle thread of the suture unit (4) arranged in the adjusting component (3) can complete the puncture operation of the suture needle thread through the blood vessel wall along a preset arc puncture path in a mode of surrounding the wound area of the blood vessel, and the suture needle thread penetrating out of the blood vessel wall can construct a loop capable of closing the wound of the blood vessel in a mode of being matched with the prefabricated knot.

9. The method for closing a vessel wound according to claim 8, characterized in that the depth of penetration of the guide wire sheath (2) is defined by the position of the balloon (31) in the axial direction of the body of the guide wire sheath (2);

when the balloon (31) passes through a vessel wound and forms a blockage in a vessel cavity, blood in the vessel can enter the guide wire sheath (2) from the side hole on the guide wire sheath (2).

10. The method for closing a vessel wound according to claim 9, characterized in that the guide wire sheath (2) is connected to the adjustment assembly (3) in such a way that a portion of its tubular body not protruding into the vessel wound can be adjustably inserted into the adjustment assembly (3) from an axially lower end of the adjustment assembly (3);

an adjusting body (33) of the adjusting assembly (3) is sleeved on the push rod (32) so that the push rod (32) can selectively perform reciprocating translation in the axial direction of the adjusting body (33), wherein a tube body of the guide wire sheath tube (2) penetrates through the push rod (32) to be connected with the adjusting body (33).